CPC Definition - Subclass H02J

Last Updated Version: 2019.02
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
Definition statement

This place covers:

  • ac and/or dc supplying systems
  • ac and/or dc distribution networks
  • circuit arrangements for battery supplies, including charging or control thereof, or co-ordinated supply from two or more sources of any kind
  • circuit arrangement providing remote indication and control of a network switch
  • systems for supplying or distributing electric power by electromagnetic waves
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Power supply circuits for apparatus for measuring X-radiation, gamma radiation, corpuscular radiation or cosmic radiation

G01T 1/175

Electric power supply circuits specially adapted for use in electronic time-pieces with no moving parts

G04G 19/00

For digital computers

G06F 1/26

For discharge tubes

H01J 37/248

Informative references

Attention is drawn to the following places, which may be of interest for search:

Vessels networks

B63J

Aircraft networks

B64D

Power supplies for movable barriers, electric doors, electric sunshades

E06B

Circuits or apparatus for the conversion of electric power, arrangements for control or regulation of such circuits or apparatus

H02M

Control of a single motor or generator, of the types covered by subclass H02N

H02N

Interrelated control of several motors, control of a prime-mover/generator combination

H02P

Control of high-frequency power

H03L

Additional use of power line or power network for transmission of information

H04B

Special rules of classification

Claimed devices, systems, and methods always have to be classified. If there is additional information disclosed, then indexing codes for the additional information must be allocated.

If a breakdown indexing code of the subclass H02J (only for additional information) is given, it must always be accompanied by a main trunk symbol under H02J, for invention or additional information. For example, if a document gets the breakdown indexing code H02J 2003/001 only, the document will not be automatically retrieved when checking the documents having the main trunk symbol H02J 3/00 as additional information. On practice, the document will not be considered part of the H02J 3/00 collection.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Wireless energy transfer

non-conductive energy transfer, even if conductors can be used for implementing the separated sending and receiving units

Circuit arrangements for dc mains or dc distribution networks
References
Limiting references

This place does not cover:

Power supplies for vehicle components

B60R 16/00

Power supplies for memories

G05G

Power supplies for computers

G06F 1/00

Fuel cells

H01M 8/00

Load protection by tripping of the load for dc systems

H02H

Details for dc/dc converters

H02M 3/00

Power supplies for dc lamps

H05B 37/00

Special rules of classification

The following Indexing Codes are to be used for classifying additional information:

H02J 2001/002

dc supply with intermediated ac distribution

H02J 2001/008

dc supply with at least two different dc voltage levels (e.g: 14V and 42V in certain vehicles)

H02J 2001/004

use of fuel cells for ac or dc power generation (e. g. for UPS, load balancing, economic power management...)

H02J 2001/006

Provisions for temporary connection of dc sources of essentially the same voltage, e.g. jumpstart cables, etc.

Arrangements for reducing harmonics or ripples
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

In converters

H02M 1/14

Parallel operation of dc sources
Definition statement

This place covers:

Circuit arrangements, systems and methods for the parallel connection of DC sources. Parallel operation must be interpreted as the operational characteristics allowing that the parallel-connected sources supply the load, for instance, how to share the load among the different sources, or how to sequentially switch different power sources on.

References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Involving batteries

H02J 7/34

{being switching converters (H02J 1/108, H02J 1/12 take precedence)}
Definition statement

This place covers:

Parallel operation of DC sources, where the sources are switched mode power supplies (SMPS), i.e. power electronic converters with a DC output.

References
Limiting references

This place does not cover:

Parallel operation of dc sources using diodes blocking reverse current flow

H02J 1/108

Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier

H02J 1/12

Informative references

Attention is drawn to the following places, which may be of interest for search:

Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using semiconductor devices as final control devices for a single load

H02M 3/158

Single converters with a plurality of output stages connected in parallel

H02M 3/285

{using diodes blocking reverse current flow (H02J 1/12 takes precedence)}
References
Limiting references

This place does not cover:

Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier

H02J 1/12

Balancing the load in a network
Definition statement

This place covers:

Balancing the load in a DC distribution network, either by avoiding overloading one section of the network, or by load shedding

Relationships with other classification places

Group H02J 1/14, in practice, relates for load shedding. Load balancing by buffering is classified in group H02J 7/34.

References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

By batteries

H02J 7/34

Circuit arrangements for ac mains or ac distribution networks
Definition statement

This place covers:

  • Arrangements for selectively connecting the load to one among a plurality of power lines or power sources
  • Arrangements for reducing harmonics or ripples
  • Arrangements using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
  • Arrangements for connecting networks of the same frequency but supplied from different sources
  • Constant-current supply systems
  • Arrangements for adjusting, eliminating, or compensating reactive power in networks
  • Arrangements for preventing or reducing oscillations of power in networks
  • Arrangements for eliminating or reducing asymmetry in polyphase networks
  • Arrangements for balancing of the load in a network by storage of energy
  • Arrangements for transfer of electric power between networks of substantially different frequency
  • Arrangements for transfer of electric power between ac networks via a high-tension dc link
  • Arrangements for parallely feeding a single network by two or more generators, converters or transformers
References
Limiting references

This place does not cover:

Wind turbines

F03D 9/00

Computer systems for trading

G06Q 30/00

Systems, methods for trading (electricity/gas/water)

G06Q 50/06

Details of switches for load protection

H01H

Photovoltaic panel

H01L 31/00

Mechanical details of connectors

H01R

Electromechanical details

H02B

Load protection by tripping of the load for ac systems

H02H

Harmonic reduction application for converters

H02M 1/12

Details of converters for reactive power compensation and ac power generation from dc sources

H02M 7/48

Details of converters for hvdc

H02M 7/7575

Preventing/reducing oscillation with a single generator

H02P 9/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

When searching in H0J3/00T see also computer systems for trading

G06Q 30/00

H02J 3/38: Parallel connections of dc/ac converters

H02M 7/493

When searching in H0J3/36

H02M 7/7575

Special rules of classification

The Indexing Code H02J 3/32 and/or H02J 3/008 is assigned for covering the idea of using parked electric vehicle batteries for feeding the network during peak times and/or selling energy.

The following Indexing Codes are to be used for classifying additional information:

H02J 2003/003

methods and systems for forecasting future load demands

H02J 2003/001

methods to deal with contingencies in the widest meaning

H02J 2003/002

compensation of flicker introduced by nonlinear loads

H02J 2003/007

planning, simulating, CAD, modelling, reliability checks, etc.

H02J 2003/143

household appliances management

H02J 2003/146

switching loads on and off in function of energy prices

H02J 2003/365

means for the reduction or elimination of harmonics or oscillations in high voltage dc link (hvdc)

H02J 2003/388

Disconnection of a local power supply from the network

{Arrangements for selectively connecting the load to one among a plurality of power lines or power sources (for providing uninterruptable power supply H02J 9/00)}
References
Limiting references

This place does not cover:

Arrangements for providing uninterruptable power supply

H02J 9/00

Arrangements for reducing harmonics or ripples
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

In converters

H02M 1/12

Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
References
Limiting references

This place does not cover:

Controlling transfer of power, sharing load between a generator and the connected network

H02J 3/38

Arrangements for adjusting, eliminating or compensating reactive power in networks (for adjustment of voltage H02J 3/16)
References
Limiting references

This place does not cover:

For adjustment of voltage

H02J 3/16

Informative references

Attention is drawn to the following places, which may be of interest for search:

Use of Petersen coils

H02H 9/08

{wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

if the bridge combines both series and shunt compensators

H02J 3/1814

Arrangements for preventing or reducing oscillations of power in networks (by control effected upon a single generator H02P 9/00)
Definition statement

This place covers:

Circuit arrangements, devices and methods for preventing, avoiding or correcting oscillations of voltage, current or power in an AC power network

References
Limiting references

This place does not cover:

Control effected upon a single generator

H02P 9/00

Arrangements for transfer of electric power between networks of substantially different frequency
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Frequency converters

H02M 5/00

Arrangements for parallely feeding a single network by two or more generators, converters or transformers
References
Limiting references

This place does not cover:

Parallel connections of dc/ac converters not for feeding a network, but a local load

H02M 7/493

Circuit arrangements for mains or distribution networks not specified as ac or dc
Definition statement

This place covers:

Circuit arrangements for mains of distribution networks containing both ac and dc (for instance, for planes) or for (rarely) networks whose nature (AC or DC) is not specified

Circuit arrangements for transfer of electric power between ac networks and dc networks (H02J 3/36 takes precedence)
Definition statement

This place covers:

Circuit arrangements, systems and methods for supplying a DC load from an AC power source. Only general purpose circuits (not application-oriented/driven) are classified here.

References
Limiting references

This place does not cover:

Circuit arrangements for dc mains or dc distribution networks

H02J 1/00

Arrangements for balancing of the load in a network by storage of energy using batteries with converting means

H02J 3/32

Arrangements for transfer of electric power between ac networks via a high-tension dc link

H02J 3/36

Arrangements for parallely feeding a single network by two or more generators, converters or transformers

H02J 3/38

Details for sending and receiving coils

H01F

Ac/dc or dc/ac converters

H02M 7/00

Special rules of classification

A system used for feeding an ac distribution network from the output of dc power source like fuel cells, solar panels belongs to H02J 3/38 and not to H02J 5/00, even if a dc to ac transfer is involved.

{with inductive power transfer (for charging H02J 7/025)}
Definition statement

This place covers:

Circuit arrangements for transfer of electric power between ac networks and dc networks by inductive transfer, i.e. the sending coil being part of the source and the receiving coil being part of the load and coupling is in the near field region.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Transmission involving transformers

H02J 3/00

Transmission by means of electromagnetic waves, e.g. microwave, RF, and far-field inductive coupling. In practice, long distance wireless transmission

H02J 50/00

Near-field transmission systems, e.g. inductive loop type

H04B 5/00

Special rules of classification

H02J 5/005 should be allocated even, if the power source is not ac mains or if it is not better specified. For example, if the power source is a fuel cell, H02J 5/005 has to be allocated, and additionally H02J 2001/004

With regard to wireless power transfer vs wireless battery charging; any document with relevant technical features about near-field inductive power transfer, should come here. If it is involved in battery charging, then double classification under H02J 7/025 must be considered.

Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Definition statement

This place covers:

Circuit arrangements for charging batteries. Rarely, general-purpose discharging, battery management, e.g. sequentially discharging batteries, or load-supplying, e.g. when they are not too concerned by the characteristics of the load.

References
Limiting references

This place does not cover:

Charging electric/hybrid vehicles

B60L, B60K

Electrical circuits for vehicles

B60R

Vehicle starting circuits

F02D

Testing of batteries

G01R36/00

Batteries mechanical, chemical details

H01M

Mechanical details of battery charger alternators

H02K

Details of converter

H02M

Perpetuum mobile

H02N

Control of alternators

H02P 9/00

Details of telephone stands

H04M

Informative references

Attention is drawn to the following places, which may be of interest for search:

For over-discharge protection

H02H 7/18

Near-field transmission systems, e.g. inductive loop type

H04B 5/00

Special rules of classification

If the document deals with the controlled charging of a capacitor, e.g. a supercapacitor, it is mandatory to assign a combination of the Indexing Code H02J 7/345 and CPC group symbols, which would apply, if the capacitor was replaced with a battery.

The following Indexing Codes are to be used for classifying additional information:

H02J 2001/002

Circuits in which a system component (battery, battery charger...) checks compatibility with another component (power source...)

H02J 2007/0067

managing load supply from one or more batteries, e.g.: discharge current reduction at low state of charge, sequential battery discharge in plural battery systems

H02J 2007/0095

means for power supply of control circuit

H02J 2007/0096

charger exchanges data with telephone or electronic device whose internal battery are being charged

H02J 2007/0098

data exchange between smart battery and charger

H02J 2007/0037

overcharge protection

H02J 2007/0039

overcurrent protection

H02J 2007/004

overdischarge protection

H02J 2007/0049

detection of fully charged condition

H02J 2007/005

remaining charge detection

H02J 2007/0059

characterised by the converter

H02J 2007/006

charge provided using dc bus or data bus of computer

H02J 2007/0062

charge provided using USB port connectors

H02J 2007/0095

means for power supply of control circuit

H02J 2007/0096

charger exchanges data with telephone or electronic device whose internal battery are being charged

H02J 2007/0098

data exchange between smart battery and charger

H02J 2007/143

multiple generators

{Stations for charging mobile units, e.g. of electric vehicles, of mobile telephones (H02J 7/0021, H02J 7/0026 take precedence)}
Definition statement

This place covers:

Battery charging characterized by a physical or electrical arrangement allowing the simultaneous charge of a plurality, i.e. two or more, of mobile units, e.g. mobile phones, machine-tools or electric/hybrid vehicles.

References
Limiting references

This place does not cover:

Monitoring or indicating circuits

H02J 7/0021

Safety or protection circuits, e.g. overcharge/discharge disconnection

H02J 7/0026

Details of stations for charging electric vehicles, e.g. vehicle recognition or identification, billing or payment, charging columns for electric vehicles, automatic adjustment of relative position, vehicle to grid (V2G) arrangements.

B60L 53/00

{the charge cycle being terminated in response to electric parameters (H02J 7/0093 takes precedence)}
Definition statement

This place covers:

  • Controlling charge in response to current
  • Controlling charge in response to voltage
  • Controlling charge in response to both current and voltage
References
Limiting references

This place does not cover:

Regulation of charging current or voltage with introduction of pulses during the charging process

H02J 7/0093

Synonyms and Keywords

In the definition H02J 7/0077 and subgroups the word "terminated" has to be interpreted as "controlled"

{using non-contact coupling, e.g. inductive, capacitive}
Definition statement

This place covers:

Non-contact coupling, i.e. the sending coil or the first capacitor plate being part of the supplying source and the receiving coil or the second capacitor plate being part of the energy receiving circuit and coupling is in the near field region.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Near-field transmission systems, e.g. inductive loop type

H04B 5/00

Special rules of classification

The classification symbol H02J 7/025 should be given even if the charging source is not ac mains or if it is unspecified. For example, if the charging source is a photovoltaic cell, classification is made in H02J 7/35 and additionally in H02J 7/025. Features regarding wireless power transfer itself are classified under H02J 50/00.

Parallel operation in networks using both storage and other dc sources, e.g. providing buffering (H02J 7/14 takes precedence)
Definition statement

This place covers:

Battery charging where power comes from one or more different DC power sources, e.g. charging from solar arrays. It may further involve the supply of a load and the resulting modes of operation (battery charging, battery supplying the load).

References
Limiting references

This place does not cover:

Arrangements for balancing of the load in an AC network by storing energy using batteries with converting means

H02J 3/32

Circuit arrangements for charging batteries from dynamo-electric generators driven at varying speed

H02J 7/14

Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
Definition statement

This place covers:

Power sources acting when the main source fails, i.e. uninterruptible (on-line and off-line) power supplies [UPS] and back-up power supplies

Power supplies able to operate in a "standby" mode (low power or sleep modes).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

With provision for charging standby battery

H02J 7/00

UPS for computers

G06F 1/00

UPS for communication stations

H04M

Details of lamp

H05B 37/00

Special rules of classification

The following Indexing Codes are to be used for classifying additional information:

H02J 2009/007

power saving operation when no load is present

H02J 2009/063

common neutral

H02J 2009/067

using a single transformer with multiple primaries (one for each ac energy source) and a secondary for the loads

H02J 2009/068

electronic means for switching from one power supply to another, avoiding parallel connection

in which an auxiliary distribution system and its associated lamps are brought into service
Definition statement

This place covers:

Emergency light systems integrated typically by a back-up power source, a set of lamps and a dedicated auxiliary distribution system powering the lamps from the back-up power source

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

A lamp not being an emergency lamp, but a lamp which is normally fed by the mains and during contingency by a battery, even if no dc/ac converters are not involved

H02J 9/065

{characterised by the use of electronic means (H02J 9/062 and H02J 9/065 take precedence)}
Definition statement

This place covers:

Emergency, back-up or standby power supplies integrating power electronic converters for the different power conversions within the units: e.g. rectifiers, battery chargers, voltage regulators. Since H02J 9/062 and H02J 9/065 take precedence, in practice, this code covers UPS with a DC output

References
Limiting references

This place does not cover:

Electronic means consisting of non rotating dc/ac converter, e.g. UPS with an AC output

H02J 9/062

Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Emergency or standby arrangements

H02J 9/00

Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network {(circuits for indication of single switches H01H 9/167; circuits specially adapted for remote switching of lighting via the power line H05B 37/0263)}
Definition statement

This place covers:

H02J 13/00 covers operation-related documents, i.e. there must be at least switching on/off or generator or load (or information of such an event) or any other similar action (i.e. sending settings of an inverter connecting a photovoltaic array to the power network.

It also covers specific monitoring of power networks (tailored to such application).

Concerning smart grids, documents where the relevant features concern electrical engineering and not ICT technologies, are classified here.

References
Limiting references

This place does not cover:

Electricity meters involved (in particular smart meters)

G01D 4/00

Measuring of electrical variables)

G01R

Power strips with locally controlled on/off capability for computers

G06F 1/266

Remote operation of appliances

G08C

Details of switches

H01H

Circuits for indication of single switches

H01H 9/167

Power strips with locally controlled on/off capability

H01R 13/66

Telemetry

H04Q 9/00

Remote switching of lightings

H05B 37/00

Circuits specially adapted for remote switching of lighting via the power line

H05B 37/0263

Informative references

Attention is drawn to the following places, which may be of interest for search:

Monitoring

G05B 15/02

Programmed control systems

G05B 19/00

Computer aided design (CAD), simulation, modelling

G06F 17/00

Computing for organisational, economical, commercial, marketing purposes

G06Q

Measured data transmission systems

G08C

Communication using power lines (PLC, power line carrier)

H04B 3/00

Details of data switching networks

H04L 12/2803

Systems for storing electric energy (mechanical systems therefor F01 - F04; in chemical form H01M)
Definition statement

This place covers:

Energy storage systems having either relevant power management issues, or having (or be ready/able for) an interaction with the (AC or DC) power network (but with focus on the storage system). The subject-matter stays normally at system level (there are other CPC technical fields dealing with the specific storage technologies). Under this approach, the group has two subdivisions according to two different technologies:

  • Systems for storing electric energy in the form of hydraulic energy
  • Systems for storing electric energy in the form of pneumatic energy
References
Limiting references

This place does not cover:

Conjoint control of energy storage in vehicles

B60W 10/00

Details of mechanical systems

F01 - F04

Details of accumulators for supplying fluids under pressure

F15B 1/04

Thermal storage - cold

F24F 5/00

Thermal storage - heaters

F24H 7/00

Thermal storage - heat

F28D 20/00

Capacitors

H01G

Batteries mechanical, chemical details

H01M

Fly-wheel generators

H02K 7/02

Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements for balancing of the load in an AC network by storage of energy

H02J 3/28

Systems for supplying or distributing electric power by electromagnetic waves
References
Limiting references

This place does not cover:

Near-field transmission systems

H04B 5/00

Antennas, e.g. rectennas, i.e. antennas for power transfer

H04Q

Circuit arrangements or systems for wireless supply or distribution of electric power
Definition statement

This place covers:

Functional and operational aspects of systems for the wireless supply or distribution of electric power, regardless of the type of wireless power transmission used.

Circuit arrangements for the wireless supply or distribution of electric power.

In this main group, wireless supply or distribution of electric power involves both of the following steps:

  • (1) conversion of electrical energy from a power source for transfer by wireless transmission;
  • (2) reception of the wirelessly transmitted energy and re-conversion into electrical energy for distribution or delivery to an electrical load.
Synonyms and Keywords

In patent documents, the following abbreviations are often used:

WPT

Wireless Power Transfer

In patent documents, the following words/expressions are often used as synonyms:

wireless power transmission, wireless energy transmission, wireless power transfer, contactless power transfer, cordless power transfer.

using capacitive coupling
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling between the plates of at least two capacitive elements, the plates being located in separate units involved in contactless power transmission.

The figure below is an illustrative example which falls within the scope of this subgroup. In the figure, the pairs of plates 64 and 80, and 66 and 82 create two capacitive elements C1 and C2 through which power is transferred from a power transmitter 52 to a power receiver 54.

media1.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Capacitors; Capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices of the electrolytic type

H01G

using inductive coupling
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling, i.e. electromagnetic interaction between two or more inductive coils, at least one coil being located in a unit separate from the others, the units being involved in contactless power transmission.

The figure below is an illustrative example which falls within the scope of this subgroup.

media2.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Magnets; inductances; transformers

H01F

Adaptations of transformers or inductances for inductive coupling

H01F 38/14

Conversion of dc power input into dc power output

H02M 3/00

Conversion of ac power input into ac power output

H02M 5/00

Conversion of ac power input into dc power output; conversion of dc power input into ac power output

H02M 7/00

Induction heating

H05B 6/02

of the resonant type
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type, i.e. in which at least one coil forms part of a resonant circuit.

In the illustrative example, resonant circuits Cr-Cp-Lp and Crs-Cs-Ls constitute a resonant circuit 40 which has a specific resonant frequency fr at which the total impedance of the resonant circuit 40 is minimized so that transmission efficiency of electric power between the power emitter circuit in PSU and power receiver circuit in PRU is increased.

media3.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Magnets; inductances; transformers

H01F

Converters

H02M

Resonant circuits, resonators

H03H

Tuning resonant circuits

H03J

using ultrasonic waves
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Non-electric signal transmission systems using acoustic waves

G08C 23/02

Transmission systems employing ultrasonic waves

H04B 11/00

using microwaves or radio frequency waves
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves.

The figure below exemplifies the subject-matter to be classified in this subgroup. Power generated in power source 108 is converted into radiofrequency and transmitted by antenna 112 in transmitter 104 to antenna 124 in receiver 120, and used to power load 136.

media4.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Radiofrequency identification

G06K

Aerials

H01Q

Radio transmission systems

H04B 7/00

characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves, characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas

The figure below is an illustrative example relevant for this subgroup. The directional antenna 11 of the transmitting station 1 sends power to the receiver 21 of the charging device 2.

media5.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Types of antennas, structural details or features of antennas, special arrangements of antennas

H01Q

Radio transmission systems

H04B 7/00

characterised by the type of receiving antennas, e.g. rectennas
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves characterised by the type of receiving antennas, e.g. rectennas.

The figure below is an illustrative example relevant for this subgroup.

media6.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Types of antennas, structural details or features of antennas, special arrangements of antennas

H01Q

Radio transmission systems

H04B 7/00

using light, e.g. lasers
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers

The figure below is an illustrative example for this subgroup. A laser 19.1 emitted by laser unit 19 heats absorber 20 and heat is converted into electrical energy by thermoelectric element 21.

media7.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Non-electric transmission systems using light waves

G08C 23/04

Lasers

H01S 3/00

Transmission systems employing infrared, visible or ultraviolet light

H04B 10/00

using two or more transmitting or receiving devices (H02J 50/50 takes precedence)
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power involving two or more transmitting or receiving devices.

The figure below is also an illustrative example for this subgroup. In the figure, the several transmitting devices transmit electric power to several receiving devices simultaneously.

media8.png

The figure below is also an illustrative example of this subgroup with two or more receiving devices involved. In the figure, the transmitting device transmits electric power to several receiving devices 1 simultaneously

media9.png

References
Limiting references

This place does not cover:

using additional energy repeaters between transmitting devices and receiving devices

H02J 50/50

Informative references

Attention is drawn to the following places, which may be of interest for search:

Radio transmission diversity systems using a plurality of spaced independent aerials

H04B 7/04

using additional energy repeaters between transmitting devices and receiving devices
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices. The repeater(s) must be physically located between the transmitting devices the receiving devices, and must be separate from them.

The figure below is an example falling within the scope of this subgroup. In the figure, the repeater C2 repeats electric power transmission between the transmitting device C1 and the receiving device C3.

media10.png

responsive to the presence of foreign objects, e.g. detection of living beings
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, wherein active parts of these circuit arrangements or systems, e.g. coils or antennas, are involved in the detection of, or the response to the presence of, foreign objects.

The figure below is an illustrative example for this subgroup. In the figure, the transmitting device 10 detects the presence of the foreign object 30.

media11.png

Relationships with other classification places

Mechanical aspects related to mechanical removing of foreign object are classified in the relevant field of technology.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detection of object presence using reflection of radio waves

G01S 13/04

Detection of object presence using reflection of acoustic waves

G01S 15/04

Electric or magnetic detection of objects

G01V 3/08; G01V 3/15

Optical detection of objects

G01V 8/10

involving the reduction of electric, magnetic or electromagnetic leakage fields
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of transformers or inductances - special means for preventing or reducing unwanted electric or magnetic effects, e.g. leakage fields

H01F 27/34

Devices for absorbing waves radiated from an aerial

H01Q 17/00

Suppression or limitation of noise or interference

H04B 15/02

Screening of apparatus or components against electric or magnetic fields

H05K 9/00

involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

IC cards

G06K 19/07

Transmitting signals characterised by the use of a wireless electrical link

G08C 17/00

Non-electric signal transmission systems

G08C 23/00

Responders; (passive) Transponders

H04B 1/59

Near-field transmission systems, e.g. inductive loop type

H04B 5/00

Transmission systems employing electromagnetic waves other than radio-waves

H04B 10/00

involving detection or optimisation of position, e.g. alignment
Definition statement

This place covers:

Circuit arrangements or systems for wireless supply or distribution of electric power electrically detecting and/or optimising the relative position between emitters, receivers and repeaters, aiming to increase the efficiency of the wireless power transmission, wherein active parts of these circuit arrangements or systems, e.g. coils or antennas, are involved in the detection and/or optimising of the position.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detection of object position using reflection of radio waves

G01S 13/06

Detection of object position using reflection or reradiation of electromagnetic waves other than radio waves

G01S 17/06

Control of position of vehicles, e.g. automatic pilot

G05D 1/00

Position control

G05D 3/00