# US 11,440,373 B2 · Temperature regulating system of in-vehicle battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,373 B2 - Document ID: US11440373B2 - Status: Granted - Kind: B2 - Application number: 16/651,265 - Filed: 2018-09-29 - Published: 2020-07-30 - Granted: 2022-09-13 - Earliest claimed: 2017-09-30 - Assignees: BYD Company Limited - Applicants: BYD Company Limited - Inventors: Xingchi Wu; Jigang Tan; Hongjun Wang - Web page: https://patentgrep.com/patent/US11440373B2 ## CPC - B60H 1/00278: {for the battery} - B60H 1/00: Heating, cooling or ventilating devices - B60H 1/00385: {for vehicles having an electrical drive, e.g. hybrid or fuel cell} - B60H 1/00478: {Air-conditioning devices using the Peltier effect} - H01M 10/613: Cooling or keeping cold - H01M 10/615: Heating or keeping warm - H01M 10/617: for achieving uniformity or desired distribution of temperature - H01M 10/625: Vehicles - H01M 10/63: Control systems (charging or discharging in response to temperature H01M10/44 {, H01M10/443}; measurement of temperature H01M10/48 {, H01M10/486}) - H01M 10/637: characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching (means for preventing undesired use or discharge H01M50/572) - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 10/663: the system being an air-conditioner or an engine - B60H 2001/003: {Component temperature regulation using an air flow} - B60H 2001/00307: {Component temperature regulation using a liquid flow} - H01M 10/6572: Peltier elements or thermoelectric devices - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY ## Abstract A temperature regulating system of an in-vehicle battery is disclosed in the present disclosure. The system includes: a heat exchanger; an in-vehicle air conditioner, where the in-vehicle air conditioner is provided with an air conditioner vent, a first air duct is formed between the air conditioner vent and the heat exchanger, a semiconductor heat exchange module, where a second air duct is formed between a cooling end of the semiconductor heat exchange module and the first fan, and a third air duct is formed between the cooling end of the semiconductor heat exchange module and a compartment; a battery thermal management module, where the battery thermal management module is connected to the heat exchanger to form a heat exchange flow path; and a controller, connected to the semiconductor heat exchange module, the battery thermal management module, and the in-vehicle air conditioner. ## Claims ### Claim 1 A temperature regulating system of an in-vehicle battery, comprising: a heat exchanger; an in-vehicle air conditioner, wherein the in-vehicle air conditioner is provided with an air conditioner vent, a first air duct is formed between the air conditioner vent and the heat exchanger, a first fan is disposed in the first air duct, and the first fan is disposed corresponding to the heat exchanger; a semiconductor heat exchange module having both a heating end and a cooling end, wherein a second air duct is formed between the cooling end of the semiconductor heat exchange module and the first fan, and a third air duct is formed between the cooling end of the semiconductor heat exchange module and a compartment; a battery thermal management module, wherein the battery thermal management module is connected to the heat exchanger to form a heat exchange flow path; and a controller, connected to the semiconductor heat exchange module, the battery thermal management module, and the in-vehicle air conditioner, wherein a fourth air duct is formed between the air conditioner vent and the compartment, and the in-vehicle air conditioner further comprises a second regulating valve and a second fan that are disposed in the fourth air duct. ### Claim 2 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the in-vehicle air conditioner comprises a first regulating valve disposed in the first air duct. ### Claim 3 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the semiconductor heat exchange module further comprises a third fan and a third regulating valve that are disposed in the second air duct and that are disposed corresponding to the cooling end of the semiconductor heat exchange module. ### Claim 4 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the in-vehicle air conditioner exchanges heat with the heat exchanger through the air conditioner vent and the first air duct. ### Claim 5 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the in-vehicle air conditioner exchanges heat with the compartment through the air conditioner vent and the fourth air duct. ### Claim 6 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the semiconductor heat exchange module exchanges heat with the heat exchanger through the second air duct and the first fan. ### Claim 7 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the semiconductor heat exchange module exchanges heat with the compartment through the third air duct. ### Claim 8 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein after the in-vehicle air conditioner exchanges heat with the semiconductor heat exchange module through the air conditioner vent and the second air duct, the semiconductor heat exchange module exchanges heat with the compartment through the third air duct. ### Claim 9 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein after the in-vehicle air conditioner exchanges heat with the semiconductor heat exchange module through the air conditioner vent, the fourth air duct, the compartment, and the third air duct, the semiconductor heat exchange module exchanges heat with the heat exchanger through the second air duct and the first fan. ### Claim 10 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the in-vehicle air conditioner exchanges heat with the heat exchanger through the air conditioner vent and the first air duct, and the semiconductor heat exchange module exchanges heat with the heat exchanger through the second air duct and the first fan. ### Claim 11 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, further comprising a battery state detection module electrically connected to the controller, wherein the battery state detection module is configured to detect a current of the in-vehicle battery. ### Claim 12 (depends on 1) The temperature regulating system of an in-vehicle battery according to claim 1, wherein the battery thermal management module comprises a pump, a first temperature sensor, a second temperature sensor, and a flow velocity sensor that are disposed on the heat exchange flow path, and the pump, the first temperature sensor, the second temperature sensor, and the flow velocity sensor are connected to the controller, wherein the pump is configured to cause a medium in the heat exchange flow path to flow; the first temperature sensor is configured to detect an inlet temperature of a medium that flows into the in-vehicle battery; the second temperature sensor is configured to detect an outlet temperature of the medium that flows out of the in-vehicle battery; and the flow velocity sensor is configured to detect a flow velocity of the medium in the heat exchange flow path. ### Claim 13 (depends on 12) The temperature regulating system of an in-vehicle battery according to claim 12, wherein the battery thermal management module further comprises a medium container disposed on the heat exchange flow path, and the medium container is configured to provide the medium for the heat exchange flow path. ### Claim 14 (depends on 12) The temperature regulating system of an in-vehicle battery according to claim 12, wherein the battery thermal management module further comprises a heater, and the heater is connected to the controller and is configured to heat the medium in the heat exchange flow path. ### Claim 15 A temperature regulating method of an in-vehicle battery of a vehicle, wherein the vehicle includes a heat exchanger; an in-vehicle air conditioner provided with an air conditioner vent, a first air duct formed between the air conditioner vent and the heat exchanger, and a first fan disposed in the first air duct corresponding to the heat exchanger; a semiconductor heat exchange module having both a heating end and a cooling end, provided with a second air duct formed between the cooling end of the semiconductor heat exchange module and the first fan, and a third air duct formed between the cooling end of the semiconductor heat exchange module and a compartment; a battery thermal management module connected to the heat exchanger to form a heat exchange flow path; and a controller connected to the semiconductor heat exchange module, the battery thermal management module, and the in-vehicle air conditioner, wherein a fourth air duct is formed between the air conditioner vent and the compartment, and the in-vehicle air conditioner further comprises a second regulating valve and a second fan that are disposed in the fourth air duct, the method comprising: obtaining, by the controller, a required power of the in-vehicle battery when heat exchange needs to be performed on the in-vehicle battery; obtaining, by the controller, an actual power of the in-vehicle battery; and controlling, by the controller and according to the required power and the actual power, at least one of the in-vehicle air conditioner and the semiconductor heat exchange module to operate to regulate a temperature of the in-vehicle battery. ### Claim 16 A temperature regulating system of an in-vehicle battery, comprising: a heat exchanger; an in-vehicle air conditioner, wherein the in-vehicle air conditioner is provided with an air conditioner vent, a first air duct is formed between the air conditioner vent and the heat exchanger, a first fan is disposed in the first air duct, and the first fan is disposed corresponding to the heat exchanger; a semiconductor heat exchange module, wherein a second air duct is formed between a cooling end of the semiconductor heat exchange module and the first fan, a third air duct is formed between the cooling end of the semiconductor heat exchange module and a compartment, and the semiconductor heat exchange module exchanges heat with the heat exchanger through the second air duct and the first fan; a battery thermal management module, wherein the battery thermal management module is connected to the heat exchanger to form a heat exchange flow path; and a controller, connected to the semiconductor heat exchange module, the battery thermal management module, and the in-vehicle air conditioner.