Article(id=1194412795648246415, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1194434043442856754, articleNumber=null, orderNo=null, doi=10.20104/j.cnki.1674-6546.20240331, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=1720108800000, revisedDateStr=2024-07-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1762699801599, onlineDateStr=2025-11-09, pubDate=1736870400000, pubDateStr=2025-01-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762699801599, onlineIssueDateStr=2025-11-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762699801599, creator=13701087609, updateTime=1762699801599, updator=13701087609, issue=Issue{id=1194434043442856754, tenantId=1146029695717560320, journalId=1189918454225211397, year='2025', volume='', issue='1', pageStart='1', pageEnd='48', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762704867468, creator=13701087609, updateTime=1762704867468, updator=13701087609, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=32, endPage=36, ext={EN=ArticleExt(id=1194412795887321745, articleId=1194412795648246415, tenantId=1146029695717560320, journalId=1189918454225211397, language=EN, title=Research on Noise Analysis and Optimization of Power Battery Relays for New Energy Vehicles, columnId=1194412794398339736, journalTitle=Automotive Engineer, columnName=Journey of Serenity and Comfort: Special Issue on Advanced Control Technologies for Vehicle NVH, runingTitle=null, highlight=null, articleAbstract=
The noise generated during the relays pick-up and disconnection of the power battery for a new energy vehicle is significant. To address the issue, the contribution of the relay noise transfer path is tested and analyzed in a semi anechoic chamber, and the results show that the contribution of the structural transfer path is higher than 70%. The paper proposes to reduce the hardness of the rubber vibration isolation pad at the Battery Distribution Unit (BDU) mounting point and past the damping material on the cover plate of the power battery. Vehicle verification results show that the sound pressure level of the optimized relay pick-up and disconnection noise is reduced by 3.9 dB(A) and 4.1 dB(A) respectively, and the noise of relays in the vehicle is improved significantly.
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针对某新能源汽车动力电池继电器吸合、断开过程中噪声较大的问题,在半消声室内对继电器噪声的传递路径进行贡献量测试分析,结果显示,结构传递路径贡献量高于70%,并提出降低电池配电单元(BDU)安装点橡胶隔振垫硬度和在动力电池上盖板粘贴阻尼材料的优化方案,实车验证结果表明,优化后继电器吸合、断开噪声声压级分别降低3.9 dB(A)、4.1 dB(A),车内继电器噪声问题明显改善。
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 63.6 | 63.9 |
| 第2次 | 64.4 | 64.7 |
| 第3次 | 64.1 | 64.8 |
| 第4次 | 63.4 | 63.2 |
| 第5次 | 63.1 | 63.7 |
| 平均值 | 63.7 | 64.1 |
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继电器声压级 dB(A)
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 63.6 | 63.9 |
| 第2次 | 64.4 | 64.7 |
| 第3次 | 64.1 | 64.8 |
| 第4次 | 63.4 | 63.2 |
| 第5次 | 63.1 | 63.7 |
| 平均值 | 63.7 | 64.1 |
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 58.0 | 58.5 |
| 第2次 | 57.9 | 58.2 |
| 第3次 | 57.0 | 58.2 |
| 第4次 | 56.6 | 58.0 |
| 第5次 | 56.8 | 57.4 |
| 平均值 | 57.3 | 58.1 |
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断开结构传递路径时继电器噪声声压级 dB(A)
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 58.0 | 58.5 |
| 第2次 | 57.9 | 58.2 |
| 第3次 | 57.0 | 58.2 |
| 第4次 | 56.6 | 58.0 |
| 第5次 | 56.8 | 57.4 |
| 平均值 | 57.3 | 58.1 |
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| 测试结果 | 继电器吸合 | 继电器断开 |
| 总声压级/dB(A) | 63.7 | 64.1 |
| 结构传递路径声压级/dB(A) | 62.6 | 62.8 |
| 空气传递路径声压级/dB(A) | 57.3 | 58.1 |
| 结构传递路径贡献量/% | 77.6 | 74.1 |
| 空气传递路径贡献量/% | 22.4 | 25.9 |
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断开结构传递路径时各传递路径噪声及贡献量
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| 测试结果 | 继电器吸合 | 继电器断开 |
| 总声压级/dB(A) | 63.7 | 64.1 |
| 结构传递路径声压级/dB(A) | 62.6 | 62.8 |
| 空气传递路径声压级/dB(A) | 57.3 | 58.1 |
| 结构传递路径贡献量/% | 77.6 | 74.1 |
| 空气传递路径贡献量/% | 22.4 | 25.9 |
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 62.9 | 62.6 |
| 第2次 | 62.9 | 62.8 |
| 第3次 | 63.5 | 63.7 |
| 第4次 | 62.1 | 63.5 |
| 第5次 | 63.2 | 62.9 |
| 平均值 | 62.9 | 63.1 |
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断开空气传递路径时继电器噪声声压级 dB(A)
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 62.9 | 62.6 |
| 第2次 | 62.9 | 62.8 |
| 第3次 | 63.5 | 63.7 |
| 第4次 | 62.1 | 63.5 |
| 第5次 | 63.2 | 62.9 |
| 平均值 | 62.9 | 63.1 |
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| 测试结果 | 继电器吸合 | 继电器断开 |
| 总声压级/dB(A) | 63.7 | 64.1 |
| 结构传递路径声压级/dB(A) | 62.9 | 63.1 |
| 空气传递路径声压级/dB(A) | 56.0 | 57.2 |
| 结构传递路径贡献量/% | 83.2 | 79.4 |
| 空气传递路径贡献量/% | 16.8 | 20.6 |
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断开空气传递路径时各传递路径噪声及贡献量
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| 测试结果 | 继电器吸合 | 继电器断开 |
| 总声压级/dB(A) | 63.7 | 64.1 |
| 结构传递路径声压级/dB(A) | 62.9 | 63.1 |
| 空气传递路径声压级/dB(A) | 56.0 | 57.2 |
| 结构传递路径贡献量/% | 83.2 | 79.4 |
| 空气传递路径贡献量/% | 16.8 | 20.6 |
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 62.2 | 60.6 |
| 第2次 | 62.3 | 62.2 |
| 第3次 | 60.5 | 61.8 |
| 第4次 | 61.3 | 60.9 |
| 第5次 | 61.1 | 61.1 |
| 平均值 | 61.5 | 61.3 |
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更换隔振垫后继电器噪声声压级 dB(A)
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 62.2 | 60.6 |
| 第2次 | 62.3 | 62.2 |
| 第3次 | 60.5 | 61.8 |
| 第4次 | 61.3 | 60.9 |
| 第5次 | 61.1 | 61.1 |
| 平均值 | 61.5 | 61.3 |
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 60.3 | 60.2 |
| 第2次 | 59.8 | 59.4 |
| 第3次 | 59.4 | 59.7 |
| 第4次 | 60.0 | 60.1 |
| 第5次 | 59.5 | 60.6 |
| 平均值 | 59.8 | 60.0 |
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最终优化方案继电器声压级 dB(A)
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| 测试次序 | 吸合噪声声压级 | 断开噪声声压级 |
| 第1次 | 60.3 | 60.2 |
| 第2次 | 59.8 | 59.4 |
| 第3次 | 59.4 | 59.7 |
| 第4次 | 60.0 | 60.1 |
| 第5次 | 59.5 | 60.6 |
| 平均值 | 59.8 | 60.0 |
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