Battery cells and electrical devices

A cell and electrode assembly technology, applied in circuits, electrical components, electrode manufacturing, etc., can solve problems such as failure of the tabs, damage to the welding part, etc., so as to reduce the de-soldering of the tabs, reduce the risk of separation, and reduce the separation of the tabs. The effect of the risk of current collectors

Active Publication Date: 2022-05-17
NINGDE AMPEREX TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The inventors of the present invention found in the process of realizing the present invention that: at present, the tabs are fixed to the pole piece by welding processes such as laser welding and ultrasonic welding, and when the user accidentally drops the battery cell or accidentally drops the electric device with the battery cell At the same time, the welding part of the tab and the current collector is easily damaged under the impact force of the drop, resulting in the failure of the tab due to desoldering

Method used

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  • Battery cells and electrical devices
  • Battery cells and electrical devices
  • Battery cells and electrical devices

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Embodiment Construction

[0041] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as being “fixed on” / “fixed on” / “installed on” another element, it may be directly on the other element, or there may be one or more intervening elements therebetween. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions are used in this specification for the purpose of description only.

[0042] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. Terms ...

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Abstract

The embodiment of the invention relates to the field of battery technology, and discloses a battery cell and an electrical device. The electric core includes an electrode assembly and a casing for accommodating the electrode assembly; the electrode assembly includes a first pole piece and a second pole piece. The first pole piece includes a current collector, a connecting piece and a tab. The current collector includes a plurality of flat parts stacked. The fixed end of the connector is connected to a flat part, the free end of the connector is arranged facing the flat part and is close to or attached to the flat part, and the free end can be elastically bent relative to the current collector. The first end of the tab is fixed to the connecting piece, and the second end of the tab is set beyond the flat part. On the one hand, the connector has a certain elastic activity space, which can transfer the impact on the tabs. On the other hand, the elastic bending and energy absorption process of the connector can remove part of the impact force, so the battery can reduce the impact of the tabs when they fall. risk of failure.

Description

【Technical field】 [0001] Embodiments of the present invention relate to the technical field of batteries, and in particular, to a battery cell and an electrical device. 【Background technique】 [0002] A battery cell is a device that converts external energy into electrical energy and stores it inside, so as to supply power to external electrical devices (such as portable electronic devices) when needed. At present, batteries are widely used in electrical devices such as mobile phones, tablets, and notebook computers. [0003] Generally, a battery cell includes a case assembly and an electrode assembly disposed in the case assembly. The electrode assembly generally includes a positive electrode sheet, a negative electrode sheet arranged alternately in a cycle, and a separator arranged between the two and used to separate the two. Wherein, the pole piece (positive pole piece or negative pole piece) includes a current collector, a tab with one end welded to the current collec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04H01M50/531
CPCY02E60/10
Inventor 孟春雷
Owner NINGDE AMPEREX TECH
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