Thermoelectric cooling-based power battery thermal management system

A thermal management system, power battery technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems that the battery shape cannot be well matched, the structure of the liquid cooling system is complex, and the battery heat dissipation requirements cannot be met. Compact, long service life, extended life effect

Active Publication Date: 2015-07-22
广东璟域能源科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air cooling Due to the low heat transfer coefficient of air forced convection, this method cannot meet the heat dissipation requirements of the battery when it operates in a high-rate and high-temperature environment
The structure of the liquid cooling system is complex, and there is a potential safet

Method used

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  • Thermoelectric cooling-based power battery thermal management system
  • Thermoelectric cooling-based power battery thermal management system
  • Thermoelectric cooling-based power battery thermal management system

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Example Embodiment

[0020] The embodiments of the present invention will be described in detail below.

[0021] Such as Figure 1 ~ Figure 5 As shown, the present invention is a power battery thermal management system based on thermoelectric cooling, using a composite phase change material 101 and a thermoelectric semiconductor chip 103 as a medium. The battery thermal management system includes a battery module 201 and a battery box housing the battery module 201 107. The thermoelectric semiconductor chips 103 embedded on both sides of the battery box 107, the finned heat sink 104 located at the upper end of the thermoelectric semiconductor chip 103, the square single cells 106 located inside the battery box 107, are used for the electricity of the single cells 106 Connected connecting piece 105, composite phase change material 101 embedded between square single cells 106, skeleton metal mesh (stainless steel mesh, aluminum mesh or copper mesh, etc.) 301 inside the composite phase change material 1...

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Abstract

The invention discloses a thermoelectric cooling-based power battery thermal management system. The thermoelectric cooling-based power battery thermal management system comprises battery modules, a battery box body used for accommodating the battery modules, thermoelectric semiconductor chips arranged on the two side surfaces of the battery box body via embedding, ribbed radiators arranged on the top ends of the thermoelectric semiconductor chips; square battery cells arranged in the battery box body, connection straps used for connection of the battery cells, composite phase change materials arranged between each two adjacent square battery cells via embedding, skeleton metal meshes arranged in the composite phase change materials, and circuit moulds used for controlling working states of the thermoelectric semiconductor chips. The thermoelectric cooling-based power battery thermal management system is compact in structure, high in safety, and excellent in heat dissipation effect; combination of the composite phase change materials with the thermoelectric semiconductor chips is adopted, so that problems, including battery cell temperature equilibrium and rapid cooling, of battery thermal management systems are solved; at the same time, a low-temperature auxiliary heating problem caused when temperature T is lower than a critical charging temperature in powder battery charging processes is solved; and normal charging of the power batteries is ensured.

Description

technical field [0001] The invention relates to a power battery thermal management system, in particular to a power battery thermal management system based on thermoelectric cooling. Background technique [0002] As the power source of electric vehicles, the power battery has a large capacity and output power. When operating at high magnification and in extreme environments, a lot of heat will be generated. If the heat cannot be dissipated in time, the temperature of the battery will rise rapidly. Excessively high temperature will lead to a decrease in the cycle life of the battery, a serious decline in electrochemical performance, and even cause safety problems such as "thermal runaway" in the battery. Therefore, it is essential to adopt a reasonable thermal management system to improve the cycle life and safety of power batteries. [0003] At present, research at home and abroad mainly focuses on the battery cooling system. The existing battery thermal management systems...

Claims

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Application Information

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IPC IPC(8): H01M10/617H01M10/625H01M10/659H01M10/6572
CPCY02E60/10
Inventor 邱骏光林涛张国庆司徒文浦
Owner 广东璟域能源科技有限公司
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