| 电池包壳体用橡胶密封件密封性能的研究 |
| Study on Sealing Performance of Rubber Seals for Battery Pack Shell |
| 投稿时间：2019-03-15 修订日期：2019-03-15 |
| DOI：10.12136/j.issn.1000-890X.2020.07.0483 |
| 中文关键词: 电池包壳体 橡胶密封件 密封性能 力学性能 有限元分析 仿真 |
| 英文关键词: battery pack shell rubber seal sealing performance mechanical property finite element analysis simulation |
| 基金项目: |
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| 摘要点击次数: 1081 |
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| 中文摘要: |
| 设计两种截面结构（方案1为非对称结构，方案2为对称结构）的新能源汽车动力电池包壳体用橡胶密封件，利用有限元仿真分析橡胶密封件的力学性能，并与实测结果进行对比；通过防水试验验证橡胶密封件的密封效果。结果表明：与方案2橡胶密封件相比，方案1橡胶密封件的刚度更小，有限元仿真结果与实测结果相差很小，有限元仿真能够较好地分析和预测橡胶密封件的力学性能；两种方案橡胶密封件的最大应变非常接近，但方案1橡胶密封件的最大应变在底部，方案2橡胶密封件的最大应变在直条密封筋与环形密封筋交接处，且上下面的接触应力相同，方案2橡胶密封件的截面结构有利于提升密封性能，并保持长久的密封效果；两种方案橡胶密封件均具有良好的实际密封效果。 |
| 英文摘要: |
| Two kinds of the rubber seals were designed for the power battery pack shell of new energy vehicle with different cross-section structure. Scheme 1 had asymmetric structure and scheme 2 was symmetric. The mechanical properties of the rubber seals were simulated and analyzed by using finite element method，and compared with the experimental testing results. The sealing effect was then verified by the waterproof test. The results showed that，compared with the scheme 2 seal，the stiffness of the scheme 1 seal was smaller，the difference between the finite element simulated results and the testing results was very
small，and the finite element simulation could effectively analyze and predict the mechanical properties of the rubber seal. The maximum strain values of the rubber seals from these two designs were very close. However,the maximum strain of the scheme 1 seal occurred at the bottom，and the maximum strain of the scheme 2 rubber seal located at the joint of straight sealing bar and ring sealing bar. The contact stress of the scheme 2 rubber seal was the same on the top and bottom，which was beneficial to the sealing performance and longterm sealing effect. Moreover，both seals provided good sealing effect. |
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