电芯壳体组件、电芯及电池包

Abstract

本实用新型涉及电池技术领域，公开了电芯壳体组件、电芯及电池包，其中该电芯壳体组件，主要包括：壳体本体、防爆阀和加强件。壳体本体一侧设有安装孔，并沿安装孔的周侧开设有安装部；防爆阀设于安装孔内；加强件设于安装部上，加强件的熔点MP1高于壳体本体的熔点MP2。本实用新型的电芯壳体组件，在电芯发生热失控时，利用防爆阀将电芯内部的气体及热量迅速排出，在壳体本体安装防爆阀的一侧设置熔点更高的加强件，并且将加强件设置在安装部内，能够在电芯热失控时，提供足够的结构强度，避免壳体本体受损导致热失控蔓延，从而提升了电芯的安全性和可靠性。

Claims

1. An electrochemical cell housing assembly, comprising: include: The housing body (1) has a mounting hole (101) on one side and a mounting part (102) is provided along the periphery of the mounting hole (101); An explosion-proof valve (2) is disposed in the mounting hole (101); A reinforcing member (3) is provided on the mounting portion (102), and the melting point M of the reinforcing member (3) is... P1 The melting point M is higher than that of the shell body (1). P2 .

2. The cell can assembly of claim 1, wherein, The melting point M of the reinforcing member (3) P1 Satisfying 800℃≤M P1 The melting point M of the shell body (1) is ≤1800℃. P2 Satisfying 500℃≤M P2 ≤660℃.

3. The cell can assembly of claim 1, wherein, The thickness of the side of the housing body (1) with the mounting hole (101) is T1, and the thickness of the reinforcing member (3) is T2, satisfying 1≤T1 / T2≤10, 1mm≤T1≤2mm, and 0.2mm≤T2≤1mm.

4. The cell can assembly of claim 1, wherein, Along the direction perpendicular to the thickness of the shell body (1), the width of the reinforcing member (3) is W1, which satisfies 5mm≤W1≤20mm.

5. The cell can assembly of claim 1, wherein, Along the direction perpendicular to the thickness of the housing body (1), the distance between the wall of the mounting hole (101) and the inner wall of the reinforcing member (3) is L1, which satisfies 1mm≤L1≤5mm.

6. The cell case assembly according to any one of claims 1 to 5, characterized in that, The mounting part (102) is configured as a mounting groove, which is opened on the outer side of the housing body (1).

7. The electrochemical cell housing assembly of claim 6, wherein, The outer side of the reinforcing member (3) does not extend beyond the outer side of the housing body (1).

8. The cell case assembly of any one of claims 1 to 5, wherein, The mounting part (102) is configured as a mounting groove, which is opened on the inner side of the housing body (1).

9. The electrochemical cell housing assembly of any one of claims 1 to 5, wherein, The mounting part (102) is constructed as a through hole.

10. The cell case assembly of any one of claims 1 to 5, wherein, The reinforcing member (3) includes any one of a stainless steel ring, a titanium ring, or a nickel-based alloy ring.

11. An electric cell characterized by include: Pole group (4); According to any one of claims 1 to 10, the battery cell housing assembly has a receiving cavity inside the housing body (1), and the electrode group (4) is disposed in the receiving cavity.

12. A battery pack, characterized by, include: At least one battery cell as described in claim 11.

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