| Study on Sealing Performance of Rubber Seals for Battery Pack Shell |
| Received:March 15, 2019 Revised:March 15, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.07.0483 |
| Key Words: battery pack shell；rubber seal；sealing performance；mechanical property；finite element analysis；simulation |
| Author Name | Affiliation | E-mail | | KE Yuchao* | Anhui Zhongding Sealing Parts Co. ，Ltd；Key Laboratory of High-Performance Rubber & Products of Anhui Province；Tsinghua University（The Department of Mechanical Engineering）-Anhui Zhongding Sealing Parts Co. ，Ltd Joint Research Center for Rubber and Plastic Seals | hgckeyuchao14@163.com | | XIA Yingsong | Zhongding Sealing Parts Co., Ltd. | | | WU Lei | Anhui Zhongding Sealing Parts Co. ，Ltd；Key Laboratory of High-Performance Rubber & Products of Anhui Province | | | FANG Binghu | Anhui Zhongding Sealing Parts Co. ，Ltd；Key Laboratory of High-Performance Rubber & Products of Anhui Province；Tsinghua University（The Department of Mechanical Engineering）-Anhui Zhongding Sealing Parts Co. ，Ltd Joint Research Center for Rubber and Plastic Seals | |
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| Abstract: |
| 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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