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Pre-heating method and system of battery pack

A technology for battery packs and batteries, applied in the field of battery pack preheating methods and systems, to achieve the effects of higher charging efficiency, longer service life, and convenient operation

Inactive Publication Date: 2019-09-06
FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, it is necessary to provide a battery pack preheating method to solve the problem of preheating the battery pack heating film under low temperature conditions. The specific technical solutions are as follows:

Method used

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  • Pre-heating method and system of battery pack

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Embodiment Construction

[0023] In order to describe in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following detailed descriptions are given in conjunction with specific embodiments and accompanying drawings.

[0024] See figure 1 In this embodiment, a battery pack preheating method can be applied to a battery pack preheating system, and the battery pack preheating system includes: a charging instruction detection module, a temperature detection module, a power battery, and a control unit , Wherein the control unit is respectively connected to the charging instruction detection module, the temperature detection module and the power battery. The specific implementation of the battery pack preheating method is as follows:

[0025] Step S101: A charge or a scheduled charge instruction is detected.

[0026] Step S102: Determine whether the temperature of the power battery is lower than the preset value of allowing battery charging? If the t...

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PUM

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Abstract

The invention relates to the field of an automobile, in particular to a pre-heating method and system of a battery pack. The pre-heating method of the battery pack comprises the following steps of detecting a charging or pre-charging instruction, judging whether a power battery temperature is lower than a preset value for allowing a battery to charge or not, and calling remaining electric quantityin the power battery to pre-heat a battery pack heating film if the power battery temperature is lower than the preset value for allowing the battery to charge. By calling the remaining electric quantity in the power battery to pre-heat the battery pack heating film, the service lifetime of the lithium battery becomes longer by pre-heating, and the charging efficiency becomes high; and moreover,other external equipment for pre-heating is not needed to be additionally arranged according to the pre-heating mode, and the pre-heating method is low in cost and is convenient to operate.

Description

Technical field [0001] The invention relates to the field of automobiles, in particular to a battery pack preheating method and system. Background technique [0002] As the main energy storage component of the power source of the vehicle, the power battery pack of pure electric vehicles is a key component of electric vehicles, which directly affects the performance of electric vehicles. At present, lithium-ion power batteries are mainly used in electric vehicle battery packs, and lithium-ion power batteries are very sensitive to temperature changes. Under low temperature conditions, due to the influence of temperature, especially the charging efficiency at -20°C is only 65% ​​of that at 15°C, and the performance of lithium batteries is seriously degraded under low temperature conditions. [0003] Therefore, under low temperature conditions, how to preheat the heating film of the battery pack has become an urgent problem to be solved at present. Summary of the invention [0004] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/635H01M10/657H01M10/44B60L58/12B60L58/27
CPCB60L58/12B60L58/27H01M10/443H01M2220/20H01M10/615H01M10/625H01M10/635H01M10/657Y02E60/10Y02T10/70
Inventor 吴贵新刘心文曹敬轩王智芳韩玉强
Owner FJ MOTOR GRP YUDO NEW ENERGY AUTOMOBILE CO LTD