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Power battery thermal management control method and system, vehicle and computer readable storage medium

A power battery and control method technology, applied in battery/fuel cell control devices, vehicle energy storage, electric vehicles, etc., can solve the problems of reduced battery consistency, increased battery temperature difference, affecting battery life, etc., to achieve maximum Play and realize the effect of battery performance

Pending Publication Date: 2022-04-08
深蓝汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent provides the simplest battery heating strategy, but as the heating time prolongs, the temperature difference between the batteries will gradually increase, and the consistency of the battery will decrease, which will eventually affect the battery life.

Method used

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  • Power battery thermal management control method and system, vehicle and computer readable storage medium

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0044] This embodiment is a power battery thermal management control system, which is used to implement the methods described in the above embodiments, including:

[0045] The first acquisition module is configured to acquire the temperature T of the battery.

[0046] The first judgment module is used to judge whether the battery temperature T is greater than the first temperature threshold, if not, request the heating temperature T1 to heat the battery; if not, do not enter the heating mode, and return to the first acquisition module.

[0047] The second acquisition module is used to acquire the battery temperature T, and acquire the real-time temperature difference ∆T of the battery.

[0048] The real-time temperature difference ∆T of the battery is obtained by collecting the battery temperature T in real time through a temperature sensor. When the battery temperature T is true, the difference between the highest temperature Tmax and the lowest temperature Tmin is ∆T.

[00...

Embodiment 3

[0057] This embodiment is a vehicle, which includes the power battery thermal management control system for reducing the heating temperature difference of the power battery described in the above embodiments.

Embodiment 4

[0059] This embodiment is a computer-readable storage medium, on which a computer program is stored, and the program can be loaded and run by a processor to implement the heat management method for reducing the heating temperature difference of a power battery described in the above embodiments.

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Abstract

The invention provides a power battery thermal management control method and system, a vehicle and a computer readable storage medium. The method comprises the steps that S1, the battery temperature T is obtained; s2, judging whether the battery temperature T is greater than a first temperature threshold value or not; and S3, obtaining the battery temperature T, and obtaining the real-time temperature difference T of the battery. S4, whether the battery temperature T is larger than a first temperature threshold value or not is judged; and S5, judging the difference value between the real-time temperature difference T of the battery and the temperature difference limit value T1. And S6, repeating the steps S3 to S5 until the battery quits heating. Thermal management control is carried out on the basis of reducing the heating temperature difference of the power battery, so that the charging and discharging performance of the battery is maximized.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to power battery thermal management control technology. Background technique [0002] As an important part of new energy vehicles, the power battery is often used to heat the battery at a heating temperature Th that is quite different from the ambient temperature Tam in order to improve the charging performance or discharge power performance of the battery at low temperatures, in order to achieve rapid heating of the battery. The inventors of the present application found that at such a constant heating temperature, as the heating time goes by, the temperature difference between the batteries gradually increases, and the subsequent charging and discharging process will further increase the inconsistency of the battery temperature. [0003] Patent document CN1109473749A discloses a power battery thermal management control method. When the battery pack temperature does not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/633H01M10/637B60L58/27
CPCY02E60/10Y02T10/70
Inventor 谭希牟丽莎袁昌荣陈小平
Owner 深蓝汽车科技有限公司