CPC B60L 58/27 (2019.02) [B60K 11/02 (2013.01); H01M 10/486 (2013.01); H01M 10/615 (2015.04); H01M 10/625 (2015.04); H01M 10/63 (2015.04); H01M 10/6568 (2015.04); H01M 10/663 (2015.04); H01M 2220/20 (2013.01)] | 16 Claims |
1. A battery heating device of an electric vehicle, comprising:
a battery heating circuit, an engine cooling circuit, a three-way valve, and a temperature sensor, wherein the three-way valve connects the battery heating circuit and the engine cooling circuit to mix a first liquid in the engine cooling circuit and a second liquid in the battery heating circuit, and transmits a mixed liquid to the battery heating circuit to heat a battery in the battery heating circuit, the temperature sensor is arranged between the battery in the battery heating circuit and a first pump in the battery heating circuit, and connected to the three-way valve, the temperature sensor detects a temperature of the first liquid before the first liquid passes through the battery, the three-way valve is configured to adjust adjusts a mixing ratio of the first liquid and the second liquid according to temperature data;
the three-way valve is located between a thermostat in the engine cooling circuit and a cabin heater core in the engine cooling circuit, wherein
a first end of the three-way valve is connected to a high voltage heater in the battery heating circuit;
a second end of the three-way valve is connected to the cabin heater core;
a third end of the three-way valve is connected to the thermostat; and
a chiller in the battery heating circuit is connected to a second reservoir in the engine cooling circuit.
|