# US 2025/0167331 A1 · Battery temperature control system, battery temperature control method, and non-transitory computer-readable recording medium

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- Number: US 2025/0167331 A1
- Document ID: US20250167331A1
- Status: Published application
- Kind: A1
- Application number: 18/841,127
- Filed: 2022-12-22
- Published: 2025-05-22
- Earliest claimed: 2022-02-25
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Makoto HASHIMOTO; Changhui YANG; Masaharu AMAIKE
- Web page: https://patentgrep.com/patent/US20250167331A1

## CPC

- H01M 10/613: Cooling or keeping cold
- B60L 7/14: for vehicles propelled by AC motors
- B60L 7/24: with additional mechanical or electromagnetic braking
- B60L 50/16: with provision for separate direct mechanical propulsion
- B60L 58/24: for controlling the temperature of batteries
- B60L 58/26: by cooling
- B60L 58/27: by heating
- H01M 10/443: {in response to temperature}
- H01M 10/486: {for measuring temperature}
- H01M 10/615: Heating or keeping warm
- H01M 10/625: Vehicles
- H01M 10/633: characterised by algorithms, flow charts, software details or the like
- H01M 10/6563: with forced flow, e.g. by blowers
- H01M 10/6568: characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
- H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J 7/04: Regulation of charging current or voltage
- H02J 7/06: using discharge tubes or semiconductor devices
- B60L 2240/12: Speed
- B60L 2240/545: Temperature
- B60L 2240/547: Voltage
- B60L 2240/62: Vehicle position
- B60L 2260/56: Temperature prediction, e.g. for pre-cooling
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A battery temperature acquirer acquires a measured battery temperature of a battery module in a battery pack installed in an electric vehicle. A target temperature determination unit determines a target temperature of the battery module at the time of arrival at an installation place of a charger to which the electric vehicle is to head. A set value determination unit determines a combination of a set value for regenerative charging, a set value for output suppression, and a set value for a temperature adjustment unit such that the battery temperature becomes closer to the target temperature.

## Claims

### Claim 1

A battery temperature control system, comprising:
a battery temperature acquirer that acquires a measured battery temperature of a battery module in a battery pack installed in an electric vehicle, the battery pack comprising the battery module, a temperature adjustment unit that adjusts the temperature of the battery module, and a battery control unit that outputs a set value for regenerative charging and a set value for output suppression to a vehicle control unit that controls an inverter connected between the battery module and a motor for driving;
a target temperature determination unit that determines a target temperature of the battery module at the time of arrival at an installation place of a charger to which the electric vehicle is to head; and
a set value determination unit that determines a combination of a set value for the regenerative charging, a set value for the output suppression, and a set value for the temperature adjustment unit such that the battery temperature becomes closer to the target temperature.

### Claim 2 (depends on 1)

The battery temperature control system according to claim 1, wherein, when performing control to lower the battery temperature, the set value determination unit sets a setting change of decreasing the intensity of the regenerative charging to the highest priority process, sets a setting change of increasing the intensity of the output suppression to the next highest priority process, and sets a setting change of increasing the cooling intensity of the temperature adjustment unit to the lowest priority process.

### Claim 3 (depends on 1)

The battery temperature control system according to claim 1, wherein, while the electric vehicle is driving, the set value determination unit adaptively switches the combination of the set value for the regenerative charging, the set value for the output suppression, and the set value for the temperature adjustment unit, based on a difference between the battery temperature and the target temperature, and the changing direction of the difference.

### Claim 4 (depends on 1)

The battery temperature control system according to claim 1, wherein the set value determination unit changes at least one of the set value for the regenerative charging, the set value for the output suppression, or the set value for the temperature adjustment unit, according to at least one of the distance between the current position of the electric vehicle and the installation place of the charger, or the current SOC (State Of Charge).

### Claim 5 (depends on 1)

The battery temperature control system according to claim 1, wherein, based on an estimated temperature of the battery module at a point that precedes the installation place of the charger by a predetermined distance and speed information of the electric vehicle, the set value determination unit performs control to increase the intensity of the temperature adjustment unit at the point.

### Claim 6 (depends on 1)

The battery temperature control system according to claim 1, further comprising a charging schedule information acquirer that acquires charging schedule information including selection information for a charger selected from at least one charger candidate and a desired charging time for the selected charger, input to a terminal device by a user.

### Claim 7 (depends on 6)

The battery temperature control system according to claim 6, wherein the target temperature determination unit applies, to charge degradation characteristics of the battery module, estimated SOC (State Of Charge) of the battery module at the time of arrival at the installation place of the charger and a charge rate determined based on at least the desired charging time, so as to determine the target temperature.

### Claim 8 (depends on 1)

The battery temperature control system according to claim 1, wherein, when the battery temperature at the time of arrival at the installation place of the charger is higher than the target temperature, the set value determination unit increases the cooling intensity of the temperature adjustment unit.

### Claim 9

A battery temperature control method, comprising:
acquiring a measured battery temperature of a battery module in a battery pack installed in an electric vehicle, the battery pack comprising the battery module, a temperature adjustment unit that adjusts the temperature of the battery module, and a battery control unit that outputs a set value for regenerative charging and a set value for output suppression to a vehicle control unit that controls an inverter connected between the battery module and a motor for driving;
determining a target temperature of the battery module at the time of arrival at an installation place of a charger to which the electric vehicle is to head; and
determining a combination of a set value for the regenerative charging, a set value for the output suppression, and a set value for the temperature adjustment unit such that the battery temperature becomes closer to the target temperature.

### Claim 10

A non-transitory computer-readable recording medium having embodied thereon battery temperature control program causing a computer to implement:
a module that acquires a measured battery temperature of a battery module in a battery pack installed in an electric vehicle, the battery pack comprising the battery module, a temperature adjustment unit that adjusts the temperature of the battery module, and a battery control unit that outputs a set value for regenerative charging and a set value for output suppression to a vehicle control unit that controls an inverter connected between the battery module and a motor for driving;
a module that determines a target temperature of the battery module at the time of arrival at an installation place of a charger to which the electric vehicle is to head; and
a module that determines a combination of a set value for the regenerative charging, a set value for the output suppression, and a set value for the temperature adjustment unit such that the battery temperature becomes closer to the target temperature.