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Battery pack and device

A technology for battery packs and battery packs, applied in the direction of batteries, battery pack components, circuits, etc., can solve problems such as chain loss of control, achieve the effect of solving safety problems, avoiding thermal runaway, and improving safety performance

Active Publication Date: 2021-02-05
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, once a battery cell has a thermal runaway, the heat released from the explosion-proof valve of this battery cell will cause a chain runaway of other battery cells

Method used

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  • Battery pack and device
  • Battery pack and device
  • Battery pack and device

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Embodiment Construction

[0071] The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0072] Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0073] It should be understood that the term "and / or" used herein is only an association relationship describing associated objects, which me...

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Abstract

The invention relates to the technical field of energy storage devices, in particular to a battery pack and device. The battery pack comprises a first box body, wherein the first box body comprises aframe and a cross beam, and the cross beam is arranged in the frame, is of a hollow structure and is provided with an exhaust port; a baffle which is connected to the cross beam and seals the exhaustport; and a battery cell which is accommodated in the first box body and is provided with an explosion-proof valve, wherein the explosion-proof valve faces the baffle; and the baffle is configured tobe separated from the state of blocking the exhaust port when the explosion-proof valve of the battery monomer is burst. According to the battery pack and the device provided by the invention, when thermal runaway happens to a certain battery monomer, the explosion-proof valve of the battery cell is burst, so that the baffle is separated from and blocks the exhaust port. On the one hand, air pressure released by the battery cell can be discharged into the cross beam, so that internal air pressure of the accommodating area is reduced; on the other hand, the heat released by the battery cell does not directly face the other battery cells, so that thermal runaway of the adjacent other battery cells 5 is avoided, and the safety performance of the battery pack is improved.

Description

technical field [0001] The present application relates to the technical field of energy storage devices, in particular to a battery pack and a device. Background technique [0002] As an important part of new energy vehicles, battery packs have extremely important safety performance. The battery pack includes a first box and a plurality of battery cells accommodated in the first box. The battery cells have explosion-proof valves. When the thermal runaway of the battery cell occurs, the explosion-proof valve bursts to release the internal air pressure and heat of the battery cell. [0003] However, once a battery cell has thermal runaway, the heat released from the explosion-proof valve of this battery cell will cause other battery cells to also undergo chain runaway. Therefore, it is necessary to design a new battery pack to prevent thermal runaway of one battery cell from affecting other battery cells. Contents of the invention [0004] The present application provide...

Claims

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Application Information

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IPC IPC(8): H01M50/209H01M50/244H01M50/249H01M50/358
CPCH01M50/249H01M50/209Y02E60/10H01M50/3425H01M50/367H01M50/262H01M50/308H01M50/204H01M50/317H01M2220/20
Inventor 汪用广唐彧游凯杰陈兴地陈艳波
Owner CONTEMPORARY AMPEREX TECH CO
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