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Circuit arrangements or systems for supplying or distributing electric power; System for storing electric energy (for digital computers G06F 1/18; circuits or apparatus for the conversion of electric power, arrangements for control or regulation of such circuits or apparatus H02M; 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)
Definition statement
This subclass/group 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 relevant to classification in this subclass
This subclass/group does not cover:
Aircraft networks
Vessels networks
Power supplies for movable barriers, electric doors, electric sunshades
Circuit arrangements for digital computers
Circuits or apparatus for the conversion of electric power, arrangements for control or regulation of such circuits or apparatus
Control of a single motor or generator, of the types covered by subclass H02N
Control of a single motor or generator
Control of high-frequency power
Informative references
Attention is drawn to the following places, which may be of interest for search:
Additional use of power line or power network for transmission of information
Special rules of classification within this subclass

Claimed device, system, method has to be classified.

At least an Indexing Code is mandatory for additional information.

For example a battery protection circuitry in a docking station requires at least an Indexing Code H02J 7/0044 besides the group symbol H02J 7/0029+ .

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

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 relevant to classification in this group
This subclass/group does not cover:
Power supplies for computers
Power supplies for vehicle components
Power supplies for memories
Power supplies for dc lamps
Load protection by tripping of the load for dc systems
Details for dc/dc converters
Fuel cells
Special rules of classification within this group

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

dc supply with intermediated ac distribution
dc supply with at least two different dc voltage levels (e.g: 14V and 42V in certain vehicles)
use of fuel cells for ac or dc power generation (e. g. for UPS, load balancing, economic power management...)
T02J7/00J
Provisions for temporary connection of dc sources of essentially the same voltage, e.g. jumpstart cables, etc.
Arrangements for reducing harmonics or ripples (in converters H02M 1/14)
References relevant to classification in this group
This subclass/group does not cover:
Arrangements for reducing harmonics or ripples in converters
Parallel operation of dc sources (involving batteries H02J 7/34)
References relevant to classification in this group
This subclass/group does not cover:
Parallel operation of dc sources involving batteries
[N: being switching converters (H02J 1/108, H02J 1/12 take precedence)]
References relevant to classification in this group
This subclass/group does not cover:
Parallel operation of dc sources using diodes blocking reverse current flow
Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
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
Single converters with a plurality of output stages connected in parallel
[N: using diodes blocking reverse current flow (H02J 1/12 takes precedence)]
References relevant to classification in this group
This subclass/group does not cover:
Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
Balancing the load in a network (by batteries H02J 7/34)
Definition statement
This subclass/group covers:

Balancing the load in a DC distribution network

References relevant to classification in this group
This subclass/group does not cover:
Balancing the load in a network by batteries
Circuit arrangements for ac mains or ac distribution networks
Definition statement
This subclass/group 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 relevant to classification in this group
This subclass/group does not cover:
Electromechanical details
Computer systems for trading
Systems, methods for trading (electricity/gas/water)
G06Q50/00C
Harmonic reduction application for converters
Load protection by tripping of the load for ac systems
Details of switches for load protection
Mechanical details of connectors
Preventing/reducing oscillation with a single generator
Details of converters for reactive power compensation and ac power generation from dc sources
Details of converters for hvdc
Wind turbines
Photovoltaic panel
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
When searching in H0J3/36
H02J 3/38: Parallel connections of dc/ac converters
Special rules of classification within this group

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 calssifying additional information:

T02J1/00L
methods and systems for forecasting future load demands
methods to deal with contingencies in the widest meaning
compensation of flicker introduced by nonlinear loads
planning, simulating, CAD, modelling, reliability checks, etc.
household appliances management
switching loads on and off in function of energy prices
means for the reduction or elimination of harmonics or oscillations in high voltage dc link (hvdc)
Disconnection of a local power supply from the network
[N: 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 relevant to classification in this group
This subclass/group does not cover:
Arrangements for providing uninterruptable power supply
Arrangements for reducing harmonics or ripples (in converters H02M 1/12)
References relevant to classification in this group
This subclass/group does not cover:
Arrangements for reducing harmonics or ripples in converters
Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
References relevant to classification in this group
This subclass/group does not cover:
Controlling transfer of power, sharing load between a generator and the connected network
Arrangements for adjusting, eliminating, or compensating reactive power in networks (for adjustment of voltage H02J 3/12; use of Petersen coils H02H 9/08)
Informative references
Attention is drawn to the following places, which may be of interest for search:
Arrangements for adjustment of voltage
Arrangements for use of Petersen coils
[N: wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters]
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
Arrangements for preventing or reducing oscillations of power in networks (by control effected upon a single generator H02P 9/00)
References relevant to classification in this group
This subclass/group does not cover:
Control effected upon a single generator
Arrangements for parallely feeding a single network by two or more generators, converters or transformers
References relevant to classification in this group
This subclass/group does not cover:
Parallel connections of dc/ac converters not for feeding a network, but a local load
Circuit arrangements for mains of distribution networks not specified as ac or dc
Definition statement
This subclass/group covers:

Circuit arrangements for mains of distribution networks containing both ac and dc

Circuit arrangements for transfer of electric power between ac networks and dc networks (H02J 3/36 takes precedence)
References relevant to classification in this group
This subclass/group does not cover:
Circuit arrangements for dc mains or dc distribution networks
Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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
Details for sending and receiving coils
Ac/dc or dc/ac converters
Special rules of classification within this group

[CpcRefSymbol=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.

[N: with inductive power transfer (for charging H02J 7/025)]
Definition statement
This subclass/group covers:

This group 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 relevant to classification in this group
This subclass/group does not cover:
Circuit arrangements for charging or depolarising batteries using non-contact coupling, e.g. inductive, capacitive
Informative references
Attention is drawn to the following places, which may be of interest for search:
Long distance wireless transmission
Transmission involving transformers
Near-field transmission systems, e.g. inductive loop type
Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
References relevant to classification in this group
This subclass/group does not cover:
Transmission involving transformers
Long distance wireless transmission
Batteries mechanical, chemical details
Details of converter
Testing of batteries
G01R36/00
Control of alternators
Vehicle starting circuits
Electrical circuits for vehicles
Charging electric/hybrid vehicles
Perpetuum mobile
Mechanical details of battery charger alternators
Details of telephone stands
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
For over-discharge protection
Special rules of classification within this group

It is mandatory to assign a combination of the Indexing Code H02J 7/345 and ECLA 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/00A
Circuits in which a system component (battery, battery charger...) checks compatibility with another component (power source...)
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
means for power supply of control circuit
charger exchanges data with telephone or electronic device whose internal battery are being charged
data exchange between smart battery and charger
overcharge protection
overcurrent protection
overdischarge protection
detection of fully charged condition
remaining charge detection
characterised by the converter
charge provided using dc bus or data bus of computer
charge provided using USB port connectors
means for power supply of control circuit
charger exchanges data with telephone or electronic device whose internal battery are being charged
data exchange between smart battery and charger
multiple generators
[N: Stations for charging mobile units, e.g. of electric vehicles, of mobile telephones (H02J 7/0021, H02J 7/0026 take precedence)]
References relevant to classification in this group
This subclass/group does not cover:
Monitoring or indicating circuits
Safety or protection circuits, e.g. overcharge/discharge disconnection
Charging electric vehicles
[N: the charge cycle being terminated in response to electric parameters (H02J 7/0093 takes precedence)]
Definition statement
This subclass/group covers:

This group covers :

  • Controlling charge in response to current
  • Controlling charge in response to voltage
  • Controlling charge in response to both current and voltage
References relevant to classification in this group
This subclass/group does not cover:
Regulation of charging current or voltage with introduction of pulses during the charging process
Synonyms and Keywords

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

[N: using non-contact coupling, e.g. inductive, capacitive]
Definition statement
This subclass/group covers:

This group 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.

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
Special rules of classification within this group

H02J 7/025 should be applied even if charging source is not ac mains or not better specified. For example if the charging source is a photovoltaic cell, not only H02J 7/35 has to be applied, but also H02J 7/025.

Parallel operation in networks using both storage and other dc sources, e.g. providing buffering (H02J 7/14 takes precedence)
References relevant to classification in this group
This subclass/group does not cover:
Circuit arrangements for charging batteries from dynamo-electric generators driven at varying speed
Circuit arrangement for emergency or standby power supply (with provision for charging standby battery H02J 7/00)
Definition statement
This subclass/group covers:

Plural power sources such as uninterruptible power supplies [UPS] and back-up power supplies

References relevant to classification in this group
This subclass/group does not cover:
Circuit arrangement for emergency or standby power supply with provision for charging standby battery
UPS for computers
UPS for communication stations
Details of lamp
Special rules of classification within this group

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

T02J9/00S11
power saving operation when no load is present
common neutral
using a single transformer with multiple primaries (one for each ac energy source) and a secondary for the loads
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

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
[N: characterised by the use of electronic means (H02J 9/062 and H02J 9/065 take precedence)]
Definition statement
This subclass/group covers:

Electronic means in the load supplying circuit for UPS

References relevant to classification in this group
This subclass/group does not cover:
Electronic means consisting of non rotating dc/ac converter
Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed, or converted (emergency or standby arrangements H02J 9/00)
References relevant to classification in this group
This subclass/group does not cover:
Emergency or standby arrangements
Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuit-breaker 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 [N: (circuits for indication of single switches H01H 9/167; circuits specially adapted for remote switching of lighting via the power line H05B 37/0263)]
References relevant to classification in this group
This subclass/group does not cover:
Electricity meters involved
Details of switches
Circuits for indication of single switches
Remote switching of lightings
Circuits specially adapted for remote switching of lighting via the power line
Informative references
Attention is drawn to the following places, which may be of interest for search:
Measured data transmission systems
Communication using power lines
Details of data switching networks
Systems for storing electric energy
Definition statement
This subclass/group covers:

Systems for storing electric energy in the form of hydraulic energy

Systems for storing electric energy in the form of pneumatic energy

References relevant to classification in this group
This subclass/group does not cover:
Batteries mechanical, chemical details
Details of mechanical systems
F01 - F04
Details of accumulators for supplying fluids under pressure
Systems for supplying or distributing electric power by electromagnetic waves
References relevant to classification in this group
This subclass/group does not cover:
Inductive or near field energy transmission, even if electro-magnetic waves are present
Antennas
Near-field transmission systems
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Last Modified: 10/11/2013