Evaluation on thermal performance of liquid‐cooling structures for high‐power lithium‐ion battery pack
Evaluation on thermal performance of liquid‐cooling structures for high‐power lithium‐ion battery pack
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高功率锂离子电池组液冷结构热性能评价
DOI：
10.1002/er.7549
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发表时间：
2021-12
影响因子：
4.6
通讯作者：
Lei Ma
中科院分区：
文献类型：
--
作者：
Gang Li;Guangming Xu;Yaping Ding;Zhiqiang Huang;Xueying Yang;Lei Ma
发展大功率电驱动系统是实现可控震源绿色勘探的关键。为了提高电动可控震源锂离子电池的安全性并延长循环寿命，开发并评估了两种类型的电池组液冷结构。液冷结构的热性能通过整个电池组的最高温度、电芯之间的最大温差和电芯温度的标准偏差（SD）系数三个指标来评价。结果表明，单进单出液冷结构的最大温差为7.43℃，SD系数为6.49%，均未达到指标要求。在双进双出液冷结构中，最高温度随着冷却剂入口温度的增长而线性增加。冷却液流量越大，最高温度越低，但电池两侧的温差越大。当冷却液入口温度低于33.9℃且冷却液流量大于等于350g/s时，即可达到电池组的热性能评价指标。电动可控震源现场试验表明，双进双出结构完全能够满足冷却要求。该研究为绿色勘探可控震源的发展提供了重要支持。
Developing high‐power electric‐driven system is the key to realize green exploration of vibroseis. To improve the safety and extend the cycle life of the lithium‐ion batteries for electric‐driven vibroseis, two types of liquid‐cooling structure for the battery pack were developed and evaluated. The thermal performance of the liquid‐cooling structures was evaluated by three indexes of the maximum temperature in the whole battery pack, the maximum temperature difference between the cells, and the standard deviation (SD) coefficient of the cells' temperature. Results suggest that the maximum temperature difference and the SD coefficient of the single‐inlet‐single‐outlet liquid‐cooling structure is 7.43°C and 6.49%, respectively, and both fail to meet the indexes. In the double‐inlet‐double‐outlet liquid‐cooling structure, the maximum temperature increases linearly with the growth of the coolant inlet temperature. With higher coolant flow rate, the maximum temperature is lower, while the temperature difference between the two sides of the cell is greater. When the inlet temperature of the coolant is below 33.9°C and the coolant flow rate is greater than or equal to 350 g/s, the thermal performance evaluation indexes of the battery pack could be achieved. Field test of the electric‐driven vibroseis shows that the double‐inlet‐double‐outlet structure can fully achieve the cooling requirements. This research provides significant support for the development of green‐exploration vibroseis.
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