导热硅胶/相变材料复合组件在电池热管理中的应用

doi:10.12052/gdutxb.200017

摘要/Abstract

摘要： 一种低温导热硅胶/相变材料复合组件在电池模组中的使用, 有效地解决了相变材料由于液化而发生的析出问题, 同时保持相变材料高导热与高潜热值。由于导热硅胶片具有一定的弹性与黏性, 使得整个系统具有一定缓冲作用, 减少了相变材料与电池之间的接触热阻, 进一步提高了整个系统的散热性能。在3C放电倍率下, 相比自然冷却方式的66.63 ℃, 强制风冷方式的57.99 ℃, PCM(Phase Change Material)冷却方式的最高温度为44.78 ℃, 分别下降了32.8%、22.78%; 温差为3.70 ℃, 满足电池模组的最大温差的要求。在3C放电倍率的循环中, PCM冷却方式的电池模组在3次循环后的温度为51.45 ℃, 在安全温度范围内。

关键词: 聚乙二醇, 接触热阻, 散热性能, 温差, 循环

Abstract: The application of a low-temperature thermal conductive silica gel/phase change material composite module in the battery module can effectively solve the problem of phase change material precipitation due to liquefaction, while maintaining the high thermal conductivity and high latent heat value of phase change material. Due to certain elasticity and viscosity of heat-conducting silica gel sheet, the whole system has a certain buffering effect, which reduces the contact thermal resistance between phase-change material and battery, and further improves the heat dissipation performance of the whole system. At 3C discharge rate, the temperature of forced air cooling was 57.99 ℃ compared with 66.63 ℃ of natural cooling. The maximum temperature of PCM(Phase Change Material) cooling mode is 44.78 ℃ and the maximum temperature difference is 3.70 ℃. They were down 32.8 percent and 22.78 percent, respectively. In the 3C discharge rate cycle, the PCM cooling mode battery module has a temperature of 51.45 ℃ after three cycles, which is still within the safe temperature rang.

Key words: polyethylene glycol, contact thermal resistance, heat dissipation performance, temperature difference, cycle

中图分类号:

TM911.3

何淋, 柯秀芳, 张国庆, 李新喜. 导热硅胶/相变材料复合组件在电池热管理中的应用[J]. 广东工业大学学报, 2021, 38(01): 104-110.

He Lin, Ke Xiu-fang, Zhang Guo-qing, Li Xin-xi. Application of Thermal Conductive Silica Gel/Phase Change Material Composite Components in Thermal Management of Batteries[J]. Journal of Guangdong University of Technology, 2021, 38(01): 104-110.

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