Battery pole pieces and cells

A battery pole piece and pole piece technology, which is applied to battery electrodes, electrode carriers/collectors, secondary batteries, etc., to achieve the effect of reducing battery weight and improving battery safety performance
CN110061182BActive Publication Date: 2020-12-01NINGDE AMPEREX TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NINGDE AMPEREX TECH
Publication Date
2020-12-01

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Abstract

The embodiment of the present application relates to battery pole pieces and battery cells. A battery pole piece according to an embodiment includes: a pole piece body having a length direction and a width direction perpendicular to the length direction; and a plurality of tabs connected to the pole piece body, each of the plurality of tabs having a width The width in the direction, and the length in the length direction; wherein, the width or length of each tab is different. The battery pole piece and the battery cell provided by the embodiment of the present application can reduce the weight of the battery while improving the safety performance of the battery, and ensure that each tab in the battery pole piece can be electrically conducted well with the outside world.
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Description

technical field

[0001] The embodiments of the present application relate to the field of batteries, in particular to battery pole pieces and battery cells. Background technique

[0002] Lithium-ion batteries have been widely used in various electronic products and electric vehicles due to their advantages such as large specific energy, high working voltage, low self-discharge rate, small size and light weight. As the market's requirements for battery safety performance continue to increase, it is not only necessary to ensure that the battery has no potential safety hazards during normal use, but also to ensure that the battery does not ignite, burn or explode after being subjected to various damages such as violent impacts and punctures. .

[0003] Traditional lithium-ion batteries usually use metal foils such as copper foil, aluminum foil, and nickel foil to make current collectors for electronic conduction. However, the safety performance of this lithium-ion battery is n...

Claims

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