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Battery packs and devices

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: 2021-12-03
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 packs and devices
  • Battery packs and devices
  • Battery packs and devices

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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 present application relates to the technical field of energy storage devices, in particular to a battery pack and a device. The battery pack includes a first box, the first box includes a frame and a crossbeam, the crossbeam is arranged in the frame, the crossbeam is a hollow structure and is provided with an exhaust port; a baffle is connected to the crossbeam and closes the exhaust port; and a battery cell , accommodated in the first box and has an explosion-proof valve facing the baffle; wherein, the baffle is configured to leave the state of blocking the exhaust port when the explosion-proof valve of the battery cell bursts. In the battery pack and device provided by the present application, when a certain battery cell is thermally out of control, the explosion-proof valve of the battery cell bursts, and the baffle is separated from the sealing exhaust port. On the one hand, the air pressure released by the battery cells can be discharged into the beam, thereby reducing the internal air pressure in the containing area; on the other hand, the heat released by the battery cells will not directly go to other battery cells, thereby avoiding The thermal runaway of the battery cell 5 also occurs, thereby improving the safety performance of the battery pack.

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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Patent Type & Authority Patents(China)
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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