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Power battery composite thermal management system and method based on natural circulation

A thermal management system, power battery technology, applied in the direction of secondary batteries, circuits, electrical components, etc., to achieve good safety performance, wide application prospects, improve power performance and life

Pending Publication Date: 2018-09-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the technical problems of power battery heat dissipation and power battery pack temperature uniformity under different working conditions

Method used

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  • Power battery composite thermal management system and method based on natural circulation
  • Power battery composite thermal management system and method based on natural circulation
  • Power battery composite thermal management system and method based on natural circulation

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with specific embodiments.

[0033] Such as Figure 1-5 shown. The invention discloses a power battery composite heat management system based on natural circulation, which includes a battery pack array 1, a cooling cavity shell 2, a condenser 7, and a heat pipe array composed of a plurality of heat pipes 3; the heat pipe 3 is a sintered heat pipe .

[0034] The battery pack array 1 is composed of a plurality of single cells 4;

[0035] The section of the evaporation section 31 of each heat pipe 3 is flat, and the section of the condensation section 33 is circular;

[0036] The inner cavity of the cooling chamber housing 2 is distributed in a horizontal array with multiple rows of sleeves 6 that are not connected to each other; The cavity shell 2 is sealed and connected; the inner cavity of the cooling cavity shell 2 is filled with working fluid, and the casing 6 is submerged under the liq...

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Abstract

The invention discloses a power battery composite thermal management system and a power battery composite thermal management method based on natural circulation. The system comprises a battery pack array, a cooling cavity shell, a condenser and a heat pipe array composed of a plurality of heat pipes; sleeves which do not communicate with one another are distributed in the inner cavity of the cooling cavity shell; working solution is filled into the inner cavity of the cooling cavity shell; the condenser is connected between the steam outlet and working solution return port of the cooling cavity shell; the evaporation section of each heat pipe is clamped between the batteries, the condensation sections separately correspondingly stretch into the sleeves, and the outer circumferential surfaces of the condensation sections are fit with the inner circumferential surfaces of the sleeves. The system utilizes the heat pipes to quickly export heat generated by the batteries to the working solution, so that the working solution is heated and boiled; by using the natural circulation, the working solution returns to the cooling cavity shell after flowing through the cooling system, and the heat is finally radiated to the external environment via the condenser. The system can solve the technical problems of heat dissipation and energy saving of the batteries under different working conditions can be solved, and meanwhile, the system is compact and simple in structure, and convenient to install and maintain.

Description

technical field [0001] The invention relates to a heat dissipation system of a battery, in particular to a natural circulation-based composite heat management system for a power battery and a method thereof. Background technique [0002] With the increasingly serious problem of energy shortage and environmental pollution, people's requirements for energy conservation and environmental protection are getting higher and higher. my country has successively promulgated a series of green environmental protection policies. mainstream. The core component of electric vehicles is the power battery. The main factor affecting the performance of power batteries is temperature. If the temperature is too high or too low, its performance will be reduced or even its safety will be endangered. High temperature causes battery performance to degrade or even explode, and the battery temperature is too low to work in a low temperature environment. These problems have always restricted the deve...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/617H01M10/625H01M10/6552H01M10/6569
CPCH01M10/613H01M10/617H01M10/625H01M10/6552H01M10/6569Y02E60/10
Inventor 甘云华谭梅鲜梁嘉林
Owner SOUTH CHINA UNIV OF TECH
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