Thermal management method, system and device of battery

A battery thermal management and thermal management technology, applied in secondary batteries, battery temperature control, secondary battery repair/maintenance, etc., can solve problems such as safety hazards, temperature conduction lag, and inability to collect battery temperature, etc., to achieve thermal management control Accuracy, wide application value, and the effect of avoiding potential safety hazards

Active Publication Date: 2011-07-13
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

For the cooling of the battery pack, since the internal temperature of the battery cells cannot be collected, the temperature obtained can only be the temperature of the battery pack, that is, the

Method used

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  • Thermal management method, system and device of battery
  • Thermal management method, system and device of battery
  • Thermal management method, system and device of battery

Examples

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Embodiment Construction

[0024] The core idea of ​​the present invention is to control the heat of the battery pack under working conditions according to the temperature value and temperature rise rate of the battery cells and the average temperature value and temperature rise rate of the battery pack as references.

[0025] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0026] Such as figure 1 As shown, it is a schematic flow chart of a battery thermal management method proposed by the present invention, the method includes the following steps:

[0027] In step s...

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PUM

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Abstract

The invention provides a thermal management method, system and device of a battery. The method comprises the steps of: collecting the temperature of each single battery in a battery pack and calculating the temperature rising rate of the each single battery, the average temperature of the battery pack and the temperature rising rate of the battery pack; and when any one of the temperature of eachsingle battery, the temperature rising rate of the each single battery, the average temperature of the battery pack and the temperature rising rate of the battery pack is higher than the corresponding heat dissipation threshold value, carrying out heat dissipation on the battery pack. In the invention, the temperature value and the temperature rising rate of the single battery as well as the average temperature value and the temperature rising rate of the battery pack are used as references and the heat quantity of the battery pack under a working state is controlled to ensure that the thermal management can be controlled more accurately and the potential safety hazard can be eliminated.

Description

technical field [0001] The present invention relates to the technical field of BMS (Battery Management System, battery management system), in particular to a battery thermal management method, system and device. Background technique [0002] Vehicles utilizing gasoline internal combustion engines or diesel internal combustion engines have caused severe air pollution. Accordingly, various recent efforts to develop electric vehicles or hybrid vehicles have focused on reducing air pollution. In current hybrid vehicles and pure electric vehicles, the high-voltage power source is usually composed of several battery packs in series, and the output voltage is as high as hundreds of volts, which is far beyond the safe voltage that the human body can withstand. In order to use the battery reliably and safely, and improve the performance and service life of the battery, the battery management system needs to control the battery to work within a reasonable temperature range. Therefor...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M10/50H01M10/613H01M10/625H01M10/63
CPCY02E60/12Y02E60/10
Inventor 徐贤张涛
Owner CHERY AUTOMOBILE CO LTD
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