Thermal insulation assembly, battery pack and electric device
CN122025934BActive Publication Date: 2026-08-28CALB GROUP CO LTD
Patent Information
- Application Number
- CN202610479264.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-13
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2046-04-13
AI Technical Summary
Technical Problem
[0003]在构思及实现本申请过程中，申请人发现至少存在如下问题：目前，现有隔热垫在电池高温状态无法有效阻隔热量，从而导致电池热失控时极易影响相邻电池，导致热蔓延，影响电池的使用安全
Benefits of technology
[0012]本申请的有益效果是：通过优化(ε*d)/D的比值，热辐射传递路径被有效抑制，减缓了相邻电池之间的热蔓延的时间，保障电池整体的使用安全，而纤维丝的机械强度保障了层状结构的长期稳定性，保障了隔热件的结构强度和使用寿命。最终，该技术手段在600℃以上高温环境中显著降低相邻电池的热失控扩散速度，并延长隔热件在1000次充放电循环后的使用寿命，显著延缓或阻止热量向相邻电池蔓延，提高了电池组的安全性能。
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Smart Images
Figure CN122025934B_ABST
Abstract
The application relates to the technical field of batteries, in particular to a heat insulation assembly, a battery pack and a power utilization device. The heat insulation assembly comprises: a packaging piece, the packaging piece being provided with a packaging cavity; and a heat insulation piece located in the packaging cavity, the heat insulation piece comprising mixed fiber filaments and aerogel, the fiber filaments having a diameter d mu m, the heat insulation piece having a thickness D mm, the heat insulation piece having an emissivity epsilon, and satisfying: 0.223 <= (epsilon * d) / D <= 54.802. The application significantly reduces the thermal runaway diffusion speed of adjacent batteries and improves the safety performance of the battery pack.
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Citation Information
Patent Citations
Heat-insulation temperature-control material and application thereof
CN116080240A
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CN117352917A