蜘蛛网流道冷板冷却液对向流锂离子电池散热分析

doi:10.11896/cldb.22070040

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Abstract High operating temperature or large temperature difference of lithium-ion battery will reduce its capacity and lifetime. In order to reduce the operating temperature and temperature difference, a spider web channel cooling plate was designed. And the heat dissipation of lithium-ion battery was calculated with the coolant counter current in the channel of the cooling plate by numerical method. The heat dissipation of lithium-ion battery with the coolant in counter current was compared with its heat dissipation with the coolant in co-current. And the effects of flow rate, channel angle, groove depth and wall thickness on the battery heat dissipation were analyzed. The results show that the maximum temperature and temperature difference of the battery cooled with the coolant in counter current are lower than those with the coolant in co-current, and the tempe-rature distribution of the battery is more uniform. In the range of 0.02—0.06 kg/s, with the increase of coolant flow rate, the maximum temperature and temperature difference of the battery decrease rapidly, while the cooling hydraulic drop increases slowly. However, when the coolant flow rate is greater than 0.06 kg/s, with the increase of coolant flow rate, the maximum temperature and temperature difference of the battery decrease slowly, while the cooling hydraulic drop increases rapidly. Increasing the channel angle can make the channel distribution more uniform in the cooling plate and improve the cooling capacity of the cooling plate. Under the condition of the constant of the mass flow rate of coolant, increasing the channel groove depth can greatly reduce the cooling hydraulic drop, but it will cause the maximum temperature and temperature difference of the battery to increase slightly. With the increase of the wall thickness of the flow channel, the maximum temperature and temperature difference of the battery show a downward trend. The maximum temperature and temperature difference of 3C discharge of lithium-ion battery can be reduced to 31.02 ℃ and 4.54 ℃ under the conditions of channel angle 80°, groove depth 1 mm, wall thickness 2 mm and coolant flow rate 0.06 kg/s.

Key words： spider web channel counter current heat dissipation lithium-ion battery

Published: 25 February 2024 Online: 2024-03-01

CLC number:

TM911

Fund:National Natural Science Foundation of China (51566006).

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	Articles by authors
	LIU Xianxi
	CAO Junlei
	LI Wenhui
	ZENG Pu

Cite this article:

LIU Xianxi,CAO Junlei,LI Wenhui, et al. Analysis of Lithium-ion Battery Heat Dissipation with Coolant Counter Current in Spider Web Channel Cooling Plate[J]. Materials Reports, 2024, 38(4): 22070040-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22070040 OR http://www.mater-rep.com/EN/Y2024/V38/I4/22070040

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