Vehicle battery thermal management method, device and system

A battery thermal management and thermal management technology, which is applied in battery/fuel cell control devices, vehicle energy storage, secondary batteries, etc., can solve the problems of battery life reduction, etc., and achieve improved battery life, stable rise or fall, and large specific heat capacity Effect

Active Publication Date: 2020-01-07
恒大恒驰新能源汽车科技(广东)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a vehicle battery thermal management method, device and system, which can solve the problem of battery life reduction caused by battery temperature changes in the related art

Method used

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  • Vehicle battery thermal management method, device and system
  • Vehicle battery thermal management method, device and system
  • Vehicle battery thermal management method, device and system

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Embodiment Construction

[0058] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0059] Implementation environment introduction:

[0060] figure 1 It is a hardware device diagram of a vehicle thermal management system provided by an embodiment of the invention, see figure 1 .

[0061] The system includes at least the following hardware devices: water temperature sensor, battery temperature sensor, coolant pump, compressor, condensing fan, water heater, battery radiator, battery pack and three-way valve.

[0062] In a possible implementation manner, a water temperature sensor is installed on the water inlet of the battery pack to periodically obtain the temperature signal of the water inlet of the battery pack and send the temperature signal of the water inlet of the battery pack to the terminal.

[0063] In a possible implementa...

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Abstract

The invention discloses a vehicle battery thermal management method and device and belongs to the field of a vehicle battery. The method comprises steps that the average temperature of a battery packof a vehicle is obtained; when the average temperature of the battery pack meets the triggering condition of any thermal management mode, the average temperature of a target battery pack is determined; based on a first difference value between the average temperature of the target battery pack and the average temperature of the battery pack, the temperature offset is determined, and the temperature offset is the target temperature variation in sub control periods in the temperature control process; the temperature of a cooling liquid inlet of the vehicle is obtained; corresponding temperaturecontrol of the cooling liquid is performed based on a thermal management mode. The method is advantaged in that the average temperature of the battery pack is indirectly controlled by controlling thetemperature of the cooling liquid inlet, the characteristic that the specific heat capacity of the cooling liquid is large is utilized, the average temperature of the battery pack stably rises or falls, and the service life of the battery is prolonged.

Description

Technical field [0001] The invention relates to the field of electric vehicles, in particular to a method, device and system for thermal management of vehicle batteries. Background technique [0002] As the power source of pure electric vehicles, the normal operation of batteries directly affects the overall performance of electric vehicles. The temperature of the battery has a huge impact on the performance of the battery, and a suitable battery operating temperature can significantly improve the performance, safety and life of the battery. [0003] In the related art, the battery thermal management system is used to keep the average temperature of the battery pack within a certain range. The method used is often to set a target average temperature range for the battery pack. When the average temperature of the battery pack exceeds this range, the coolant temperature is reduced. , Cool the battery pack through the cooling liquid; when the average battery temperature is lower than...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/633H01M10/615H01M10/637H01M10/6556H01M10/6568H01M10/6569H01M10/6563B60L58/26B60L58/27
CPCB60L58/26B60L58/27H01M10/613H01M10/615H01M10/625H01M10/633H01M10/637H01M10/6556H01M10/6563H01M10/6568H01M10/6569Y02E60/10Y02T10/70
Inventor 李若迪
Owner 恒大恒驰新能源汽车科技(广东)有限公司
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