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Electrical vehicle battery thermal management system

A technology for battery thermal management and electric vehicles, applied in secondary batteries, battery temperature control, circuits, etc., can solve problems such as high internal temperature of batteries, thermal runaway, poor heat dissipation, etc., and achieve high safety and reliability

Active Publication Date: 2015-12-30
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] Due to the low convective heat transfer coefficient between the air and the surface of the battery pack, and the long heat conduction path inside the module and the large thermal resistance, the heat dissipation effect is not good. When the battery is discharged at high power, the heat generated is accumulated and cannot be effectively released, so the temperature inside the cell is getting higher and higher, even beyond the safe use range, resulting in thermal runaway

Method used

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  • Electrical vehicle battery thermal management system
  • Electrical vehicle battery thermal management system

Examples

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Embodiment Construction

[0024] Such as Figure 5 As shown, the outer surface of the battery pack 5 is closely attached to an integrated heat exchange element 11, and the integrated heat exchange element 11 has the functions of both a heating device and a refrigeration system evaporator. The heat exchanging element 11 is embedded with PTC electric heating (heating device 13), and there are multiple microchannels 12 (for cooling) on ​​the device.

[0025] Such as Figure 4 As shown, the microchannel 12 is connected with the vehicle-mounted air-conditioning refrigeration system to form a circulation loop, and the air-conditioning cooling system is used to cool the battery pack 5, and the cooling effect is more obvious. Such as Figure 6 As shown, the microchannel 12 is a pipeline arranged side by side, and one end of the entrance of the microchannel 12 is connected with the inlet shunt pipe, and the inlet shunt pipe is communicated with the outlet of the condenser 8 medium of the vehicle-mounted air-c...

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Abstract

The invention discloses an electrical vehicle battery thermal management system, which comprises a battery pack, wherein a heat exchanger element is closely fit on the outer surface of the battery pack, and comprises a heating device and a micro channel, wherein a heat-eliminating medium flows in the micro channel. The electrical vehicle battery thermal management system saves a fan cooling system, cancels an air inlet, enables the battery pack to form a sealed space, and enables foreign matters, dust and water to enter, thereby guaranteeing higher safety reliability.

Description

technical field [0001] The invention relates to the technical field of electric vehicle power battery systems. Background technique [0002] With the development of social economy and the further increase of energy demand, the voice of new energy technology is getting higher and higher, and the development of electric vehicles has become the general trend. As the core part of electric vehicles, battery performance and service life directly determine the performance and cost of electric vehicles. [0003] The power battery used in electric vehicles is composed of multiple battery cells connected in series and parallel to form a battery pack. The battery cells are closely arranged together. When charging and discharging, the heat generated by each battery cell affects each other. If Uneven heat dissipation will cause the local temperature of the battery pack to rise rapidly, which will deteriorate the consistency of the battery and greatly shorten the service life. In severe ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/61H01M10/613H01M10/625H01M10/655
CPCY02E60/10
Inventor 陶玉鹏曾祥兵
Owner CHERY AUTOMOBILE CO LTD
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