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Power battery thermal management system

A thermal management system and power battery technology, applied in the field of thermal management, can solve problems such as lack of good solutions, and achieve the effect of improving safety

Pending Publication Date: 2019-08-23
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing power battery temperature control technologies mainly include several forms such as air cooling, liquid cooling, and refrigeration direct evaporative cooling. However, there is no good way to deal with power battery thermal runaway, such as timely treatment of battery fire.

Method used

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] Such as figure 1 As shown, it is one of the schematic diagrams of the thermal management system of the power battery in the embodiment of the present invention. The thermal management system of the power battery includes:

[0023] A battery cooling unit and a battery fire extinguishing unit, both of which include a gas-liquid separator 1 w...

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Abstract

The embodiment of the invention provides a power battery thermal management system including: a battery cooling unit and a battery fire extinguishing unit. In the battery cooling unit, an air cooler outputs cooled gaseous carbon dioxide to the air inlet of an ejector, the ejector inputs the gaseous carbon dioxide entering from the air inlet and the gaseous carbon dioxide injected from an injectingport into a gas-liquid separator, the gas-liquid separator outputs the separated liquid carbon dioxide from a liquid channel port and an expansion valve to a battery cooling evaporator, and the battery cooling evaporator cools the power battery pack by the liquid carbon dioxide. When the power battery pack is on fire, the battery cooling unit stops working. In the battery fire extinguishing unit,the gas-liquid separator outputs the liquid carbon dioxide from a liquid channel port and an electric valve to a nozzle, and the nozzle extinguishes the fire and cools the power battery pack by ejecting the liquid carbon dioxide. The power battery thermal management system handles the thermal runaway of the power battery while cooling the power battery.

Description

technical field [0001] The invention relates to the technical field of thermal management, in particular to a power battery thermal management system. Background technique [0002] The power battery generates a large amount of chemical reaction heat during the charging and discharging process. The temperature and uniformity of the chemical reaction heat have a very prominent impact on the performance and life of the battery; There is a risk of thermal runaway, which makes real-time monitoring and control of battery temperature very important to ensure battery performance, service life and safety. [0003] Existing power battery temperature control technologies mainly include several forms such as air cooling, liquid cooling, and direct evaporative cooling. However, there is no good way to deal with power battery thermal runaway, such as timely treatment of battery fire. Contents of the invention [0004] An embodiment of the present invention provides a thermal management...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/6567H01M10/635H01M10/42H01M10/48A62C3/16
CPCH01M10/613H01M10/6567H01M10/635H01M10/4207H01M10/425H01M10/482H01M10/486A62C3/16Y02E60/10
Inventor 邹慧明陈伊宇田长青唐明生
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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