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Partition thermal management control method of battery pack

A control method and thermal management technology, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as excessive temperature difference between cells, and achieve the effect of solving excessive temperature difference and simple and easy control methods

Inactive Publication Date: 2020-08-07
JIANGLING MOTORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a partition thermal management control method of the battery pack to solve the problem that the temperature difference of the cells in different areas of the battery pack is easy to be too large

Method used

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  • Partition thermal management control method of battery pack
  • Partition thermal management control method of battery pack
  • Partition thermal management control method of battery pack

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Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Example: see figure 1 , figure 2 and image 3 .

[0023] A partition thermal management control method for a battery pack, comprising the following content:

[0024] S1. Hardware design of battery pack thermal management loop;

[0025] S2. A thermal management control method for battery pack partitions.

[0026] The specific process of the hardware design of the thermal management loop of the battery pack partition is as follows:

[0027] S11. Composition of thermal management loop hardware

[0028] The thermal management circuit is composed of a heater, cooler, auxiliary water tank, water pump, A water valve, B water valve, and battery pack partition water jacket; the battery pack partition water jacket divides the interior of the battery pack into independent A regions and In the area B, the water inlet of the battery pack partition water jacket is respectively provided with an A water valve and a B water valve corresponding to the A area and the B area.

[00...

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PUM

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Abstract

The invention discloses a partition thermal management control method of a battery pack. According to the method, a water jacket in a battery pack is divided, corresponding water valves are arranged at the water inlets of the water jacket in different areas, the average temperature of battery cores in each area is calculated according to the temperature difference of the battery cores in differentareas, and water flow passing through the water jacket is controlled by using the water valves, so that the partitioned thermal management control of the battery pack is realized. According to the invention, the water jacket of the battery pack is divided into a plurality of areas, and each area is subjected to temperature control by one water valve, so that the temperature difference of different areas of the battery pack is reduced, and the problems of battery pack failure and service life shortening caused by overlarge temperature difference of battery cores in different areas in the use process of the battery pack are effectively solved.

Description

technical field [0001] The method of the present invention relates to the field of energy and power transmission, in particular, it is a partitioned heat management control method for battery packs. Background technique [0002] The battery pack is the energy source of pure electric vehicles. It is the main task of battery pack thermal management to keep the battery core temperature stable and balanced within a reasonable range of temperature and temperature difference. The traditional battery pack thermal management circuit can effectively provide battery Pack heating or cooling, since there is only one circuit in the water jacket inside the battery pack, different areas can only be cooled, heated or circulated uniformly. In actual working conditions, due to the ambient temperature and the layout of the battery pack, the battery pack will The temperature difference of the battery cells in different regions is too large. For example, in cold regions, the temperature of the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/633H01M10/613H01M10/615H01M10/617H01M10/625H01M10/6556H01M10/6568
CPCH01M10/613H01M10/615H01M10/617H01M10/625H01M10/633H01M10/6556H01M10/6568Y02E60/10
Inventor 丁文敏刘伟东游道亮胡松华
Owner JIANGLING MOTORS