端盖组件、储能装置及供电系统

Abstract

本申请公开了一种端盖组件、储能装置及供电系统，涉及储能技术领域。该端盖组件包括：盖板组件，包括盖板和防爆阀，盖板具有防爆孔，防爆阀位于防爆孔内；绝缘件，位于盖板沿厚度方向的第一侧，且在盖板上的正投影与防爆孔不存在重合区域，绝缘件包括连接筋和多个支撑部，连接筋沿盖板的边缘连接多个支撑部；电极端子，穿设且限位在盖板上，且电极端子的第一端部在盖板沿厚度方向的第二侧裸露。本申请实施方式中，通过调整绝缘件的结构设计，以减少绝缘件的用料，同时使得绝缘件在盖板上的正投影与防爆孔不存在重合区域，从而在储能装置热失控的情况下，减小甚至避免熔融的绝缘件在防爆孔处的堆积，降低了引燃起火风险。

Claims

1. An end cap assembly, characterized by, include: A cover plate assembly (31) includes a cover plate (311) and an explosion-proof valve (313), wherein the cover plate (311) has an explosion-proof hole (312) and the explosion-proof valve (313) is located in the explosion-proof hole (312); An insulating component (32) is located on the first side of the cover plate (311) along the thickness direction, and its orthographic projection on the cover plate (311) does not overlap with the explosion-proof hole (312). The insulating component (32) includes a connecting rib (321) and a plurality of supporting parts (322), and the connecting rib (321) connects the plurality of supporting parts (322). An electrode terminal (33) is inserted through and limited on the cover plate (311), and the first end of the electrode terminal (33) is exposed on the second side of the cover plate (311) along the thickness direction.

2. The end cap assembly of claim 1, wherein, At least a portion of the plurality of support portions (322) has a fixing post (323); The cover plate (311) has a fixing hole (315) corresponding to each of the fixing posts (323), and the fixing posts (323) on the at least part of the support (322) are fixed in the corresponding fixing holes (315).

3. The end cap assembly of claim 1, wherein, The end cap assembly (30) includes two of the electrode terminals (33); The insulating element (32) further includes two connecting pieces (324), each of which is connected to at least one of the support portions (322), and the two connecting pieces (324) are respectively sandwiched between the second ends of the two electrode terminals (33) and the cover plate (311).

4. An end cap assembly as claimed in claim 2 or 3, wherein, The plurality of support portions (322) include a pair of first support portions (325) distributed along the length direction of the cover plate (311), and a pair of second support portions (326) distributed along the width direction of the cover plate (311). The pair of second support portions (326) are located between the pair of first support portions (325), and each of the first support portions (325) and each of the second support portions (326) has the connecting rib (321).

5. The end cap assembly of claim 4, wherein, A pair of second support portions (326) are staggered along the length direction of the cover plate (311) and partially overlap along the width direction of the cover plate (311).

6. The end cap assembly of claim 4, wherein, Both the first support portion (325) and the second support portion (326) have a fixing post (323).

7. The end cap assembly of claim 1, wherein, The support (322) is a hollow structure with an opening on one side, and the opening side of the support (322) faces the cover plate (311). The bottom of the support (322) opposite to the opening side has one or more elongated holes (327).

8. The end cap assembly of claim 1, wherein, The first side surface of the cover plate (311) is covered with an insulating layer (314). The orthographic projection of the insulating element (32) on the cover plate (311) overlaps with the insulating layer (314), and the area of ​​the orthographic projection of the insulating element (32) on the cover plate (311) is greater than or equal to 6% and less than or equal to 70%.

9. The end cap assembly of claim 8, wherein, The area of ​​the insulating element (32) projected onto the cover plate (311) is greater than or equal to 8% and less than or equal to 15%.

10. An energy storage device, characterized by, include: The housing (10) includes a receiving cavity (11) with an opening; Electrode assembly (20) is housed within the receiving cavity (11); The end cap assembly (30) according to any one of claims 1-9, wherein the end cap assembly (30) seals the opening of the receiving cavity (11).

11. A power supply system characterized by comprising: The power supply system includes electrical equipment and the energy storage device as described in claim 10, wherein the energy storage device supplies power to the electrical equipment.

Images