Battery cell pole sheet and battery cell

A pole piece and battery cell technology, which is applied in the field of battery production, can solve the problem of over-thickness of the pole piece glue, achieve the effect of improving safety, increasing volume energy density, and avoiding the safety risk of lithium analysis
CN110729447APending Publication Date: 2020-01-24HUIZHOU LIWINON NEW ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUIZHOU LIWINON NEW ENERGY TECH CO LTD
Publication Date
2020-01-24

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Abstract

The invention belongs to the technical field of battery production and relates to a battery cell pole sheet. The battery cell pole sheet comprises a pole sheet and tabs; the pole sheet is provided with a coating area and an empty foil area; the tabs are accommodated in the empty foil area; the tabs are covered with first insulating paste; a plurality of grooves matched with the first insulating paste are formed in the coating area at intervals; the first insulating paste is accommodated in the grooves; and second insulating paste is arranged at the bottom surfaces of the grooves. With the battery cell pole sheet of the invention adopted, the problem that the paste application positions of wound pole sheets are too thick can be solved; the overall thickness of a battery cell is reduced; theenergy density of a battery is improved; and the quality of the battery can be improved. The invention also discloses a battery cell.
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Description

technical field

[0001] The invention belongs to the technical field of battery production, and in particular relates to a battery pole piece and a battery. Background technique

[0002] Nowadays, all countries are vigorously developing green and high-efficiency secondary batteries. As a new type of secondary battery, lithium-ion batteries have the advantages of high energy density and power density, high working voltage, light weight, small size, long cycle life, good safety, and environmental protection. They are widely used in portable appliances, electric tools, large Energy storage, electric transportation power supply and other aspects have broad application prospects.

[0003] In the manufacturing process of existing lithium-ion batteries, in order to avoid the problem of lithium deposition during the charging process of the positive and negative electrodes and reduce the potential safety hazard, an auxiliary adhesive tape is pasted on the positive and negative electr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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