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Cooling device for power lithium battery and cooling plate thereof

A cooling device, lithium battery technology, applied in battery/fuel cell control devices, secondary batteries, circuits, etc., can solve problems such as safety accidents, burning, battery damage, etc., to achieve less leakage, fewer parts, and pipeline joints less effect

Pending Publication Date: 2017-12-15
ZHEJIANG YINLUN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once a leak occurs, the ethylene glycol in the coolant may cause combustion, thereby damaging the battery and even causing a greater safety accident

Method used

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  • Cooling device for power lithium battery and cooling plate thereof
  • Cooling device for power lithium battery and cooling plate thereof
  • Cooling device for power lithium battery and cooling plate thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] refer to figure 1 , The battery cooling device of the prior art has a refrigerant circuit and a cooling liquid circuit, and its defects have been described above and will not be repeated here.

[0030] refer to figure 2 , a cooling device for a power lithium battery of the present invention includes a second branch composed of a cooling plate and a second expansion valve at the front end of the cooling plate, and the second branch is connected to the evaporator and the evaporator of the automobile refrigeration system. The first branch formed by the first expansion valve at the front end is connected in parallel, and the cooling plate is attached to the battery.

[0031] In a cooling device for a power lithium battery of the present invention, the liquid refrigerant from the condenser is divided into two paths: one path is throttled and depressurized by the first expansion valve, and then enters the evaporator, where it vaporizes and absorbs heat, and communicates wit...

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Abstract

The invention discloses a cooling device for a power lithium battery. The cooling device comprises a second branch consisting of a cooling plate and a second expansion valve at the front end of the cooling plate. The cooling device is characterized in that the second branch is connected in parallel with a first branch consisting of an evaporator of an automobile refrigerating system and a first expansion valve at the front end of the evaporator, wherein the cooling plate is attached to the battery. According to the cooling device for the power lithium battery, a liquid refrigerant from a condenser is divided into two paths; after being throttled and depressurized by the first expansion valve, the first path of liquid refrigerant enters the evaporator, is gasified to absorb heat in the evaporator, and exchanges heat with outside air, so as to achieve a refrigeration effect; after being throttled and depressurized by the second expansion valve, the second path of liquid refrigerant is directly charged into the cooling plate, after being attached to the cooling plate, the battery is in tight contact with the cooling plate, heat generated during operation of the battery is transferred to the cooling plate, the refrigerant is evaporated to absorb heat in the cooling plate, and the generated heat during operation of the battery is taken away, so that the temperature of the battery is reduced.

Description

technical field [0001] The invention relates to the field of power lithium batteries, in particular to the field of power lithium batteries for battery vehicles and hybrid vehicles, in particular to a cooling device for power lithium batteries and a cooling plate thereof. Background technique [0002] Pure electric vehicles and hybrid vehicles use batteries as the power source, which can achieve zero pollution in use, and can use other non-petroleum resources such as coal, water power, etc., which can effectively solve the problems of vehicle pollution and energy, so they are widely valued worldwide. . The performance and quality of these vehicles depend to a large extent on the performance of the power battery packs they are equipped with. Temperature is a crucial factor affecting the performance of power batteries. When the vehicle runs under different driving conditions, the battery will be discharged at different rates and generate a large amount of heat at different h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/6554H01M10/6556H01M10/6568H01M10/6569H01M10/663B60L11/18
CPCH01M10/613H01M10/625H01M10/6554H01M10/6556H01M10/6568H01M10/6569H01M10/663B60L58/26Y02T10/70Y02E60/10
Inventor 鲜明谢建刘浩王强由毅
Owner ZHEJIANG YINLUN MACHINERY
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