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A module top heating system and control method suitable for soft pack power batteries

A power battery and heating system technology, applied to battery pack parts, secondary batteries, circuits, etc., can solve the problems of unreasonable heat transfer path, high space structure requirements, low heating efficiency, etc. Reasonable heat path and high heating efficiency

Active Publication Date: 2020-03-17
安徽南都华拓新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key parts that affect the low-temperature charging performance of the battery are the positive and negative electrode materials and copper and aluminum foils. Therefore, the existing heating scheme has an unreasonable heat transfer path and low heating efficiency.
[0006] In addition, the existing bottom and side schemes also have the disadvantage of high requirements for space structure

Method used

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  • A module top heating system and control method suitable for soft pack power batteries
  • A module top heating system and control method suitable for soft pack power batteries
  • A module top heating system and control method suitable for soft pack power batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The following examples serve to illustrate the invention.

[0028] Such as figure 1 As shown, the schematic diagram of the module top heating system of a soft-pack power battery pack mainly includes a chassis 5, a soft-pack cell module 3, a heater 2, a temperature collector 4, and a BMS (battery management system). According to the shape characteristics of the battery-packing module and the installation position in the battery pack, the heater 2 is made into a corresponding shape, the surface of the heater 2 is insulated, and the heater 2 is pasted on the bus bar of the module 3. Tighten the cover plate 1 of the module to make it press against the heating film 2, set the probe of the temperature collector 4 on the bus bar of the module 3, and connect the heating film 2 and the temperature collector 4 to the BMS.

[0029] The heater used in this example is a PI heating film, and the heating power of the heaters corresponding to the positive bus bar area and the negative...

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Abstract

The invention discloses a module top heating system suitable for a soft package power battery and a control method. The module top heating system mainly comprises a soft package battery core module, a heater, a temperature collector and a BMS, wherein insulating treatment is adopted for the surface of the heater; the heater is attached to a busbar at the top of the soft package battery core module; a module cover plate presses a heating film, so that the heating film is clung to the busbar; a temperature collector probe is arranged on the busbar of the module; and the heating film and the temperature collector are connected to the BMS. The heat energy transfer path is the heater-busbar-tab-copper-aluminum foil-positive and negative electrode materials- membrane-electrolyte-aluminum-plastic film-battery core external parts, heat energy is transferred outwards from the inside of a battery core through the tab, the heat transfer path is more reasonable and the heating efficiency is high.

Description

technical field [0001] The invention relates to a module top heating system and a control method suitable for soft pack power batteries. Background technique [0002] The future power battery is the core link in the development of new energy vehicles. The development of advanced power battery materials plays an important role in reducing the cost and improving the practicality of new energy vehicles. Power battery materials represented by lithium-ion batteries are key technologies for the development of new energy vehicles. However, lithium-ion batteries have very high requirements on the operating temperature, and the charging temperature is required to be above zero. If the temperature of the lithium-ion battery itself is too low, it will not be able to charge if it is light, or it will cause a short circuit inside the battery, causing a fire and explosion. [0003] The power battery heating scheme of the existing pouch cell module usually adopts two heating schemes, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/633H01M10/637H01M10/647H01M10/657H01M2/20
CPCH01M10/615H01M10/625H01M10/633H01M10/637H01M10/647H01M10/657H01M50/502Y02E60/10
Inventor 喻小平王敏叶天云李小平郭锋
Owner 安徽南都华拓新能源科技有限公司
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