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Multifunctional battery thermal management system and working method thereof

A technology for battery thermal management and working methods, applied in the field of battery thermal management systems, can solve problems such as fire, battery explosion, and major safety accidents, and achieve the effects of improving accuracy, accurately and efficiently cooling, and achieving cooling effects

Pending Publication Date: 2022-07-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the battery thermal runaway occurs, it will heat up rapidly in a short period of time. If the temperature is too high, the battery may explode or even cause a fire. harm and loss

Method used

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  • Multifunctional battery thermal management system and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 As shown, this embodiment provides a multifunctional battery thermal management system,

[0041] A multifunctional battery thermal management system, comprising an air conditioning system and a battery module, wherein the air conditioning system is connected to the battery module through a main switch 7 and a throttle valve 8 connected in sequence;

[0042] The air conditioning system includes a compressor 1; a four-way reversing valve 2, an outdoor heat exchanger 3; an air conditioning flow valve 4; an air storage tank 5 and an indoor heat exchanger 6; the battery module includes a plurality of battery branches, each battery branch The road includes a branch temperature sensing valve 9 ; a nozzle 10 and a plurality of batteries 11 .

[0043] The air conditioning system includes an air storage tank 5, and a main switch 7 connected to the air storage tank 5;

[0044] The battery module includes a plurality of battery branches, each of the battery branches...

Embodiment 2

[0056] like figure 1 As shown, this embodiment provides the working method of the multifunctional battery thermal management system as described in the first embodiment,

[0057] A working method of a multifunctional battery thermal management system, comprising:

[0058] When the battery is thermally out of control, the corresponding battery branch temperature sensing valve senses the abnormal signal of temperature change, and transmits the signal to the main switch, the compressor switch and the abnormal battery branch switch;

[0059] The compressor is turned off, and the main switch and the abnormal battery branch switch are turned on at the same time;

[0060] The carbon dioxide ejected from the gas storage tank passes through the throttle valve, and the Joule-Thomson effect occurs, the temperature drops rapidly, and the temperature continues to drop at the nozzle and is sprayed onto the corresponding battery at a higher speed;

[0061] 1. In the event of an accident su...

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Abstract

The invention belongs to the technical field of battery thermal management, and provides a multifunctional battery thermal management system and a working method thereof.The multifunctional battery thermal management system comprises an air conditioning system and a battery module, and the air conditioning system is connected with the battery module through a main switch and a throttling valve which are sequentially connected; the air conditioning system comprises an air storage tank which is connected with a main switch; the battery module comprises a plurality of battery branches, each battery branch comprises a plurality of batteries which are connected in sequence, and each battery is connected with a nozzle; a branch temperature sensing valve is arranged between each battery branch and the throttle valve; the temperature sensing valve, the gas storage tank, the nozzle and other devices are added, the composite function system meets the refrigerating capacity or heating capacity needed by the electric automobile, and meanwhile the cooling effect of the battery is achieved by means of the characteristics that a working medium is not prone to combustion and the temperature is rapidly reduced after the working medium passes through the throttling valve; and the flame-retardant and explosion-proof functions under extreme conditions are realized.

Description

technical field [0001] The invention belongs to the technical field of battery thermal management, and in particular relates to a multifunctional battery thermal management system and a working method thereof. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The fuel is mainly coal, petroleum and other fossil fuels, and the large-scale use will cause serious environmental pollution problems. The emergence of electric energy vehicles has reduced the use of fossil fuels to a certain extent, and the safety of batteries has become a key concern. Generally speaking, electric vehicles have their own battery system, which will face a series of safety problems such as battery failure and explosion. [0004] When the battery is thermally out of control, it will heat up rapidly in a short period of time. If the temperature is too high, the battery ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/26B60L58/10B60H1/00
CPCB60L58/26B60L58/10B60H1/00392B60H1/00278B60H1/00321
Inventor 孙锲林长青李海龙黄清喜张同坤
Owner SHANDONG UNIV