CN210074011U

CN210074011U - Quick-charging lithium battery structure

Info

Publication number: CN210074011U
Application number: CN201921365489.7U
Authority: CN
Inventors: 曾金生; 唐德富
Original assignee: Huizhou Dianmeng New Energy Technology Co Ltd
Current assignee: Huizhou Dianmeng New Energy Technology Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-02-14
Anticipated expiration: 2029-08-22

Abstract

The utility model relates to a fill lithium cell structure soon, including anodal, negative pole, diaphragm, electrolyte, packaging structure, anodal including the anodal mass flow body, coating at the anodal coating on anodal mass flow body surface and the anodal utmost point ear at anodal mass flow body middle part of welding, the negative pole includes the negative current collector, the coating at the negative coating on negative current collector surface and the negative pole utmost point ear at negative current collector edge. The utility model provides a fill lithium cell structure soon, its anodal utmost point ear sets up the middle part at the anodal mass flow body for the charging current that this lithium cell can bear is showing and is promoting, thereby realizes filling the function soon.

Description

Quick-charging lithium battery structure

Technical Field

The utility model relates to a lithium cell field especially is about a fill lithium cell structure soon.

Background

With the popularization of mobile phones, the demand of lithium batteries has increased year by year. The lithium battery adopts a spiral winding structure and is formed by spacing a polyethylene film isolating material with very fine and strong permeability between a positive electrode and a negative electrode.

In the existing lithium battery, the lugs of the positive and negative electrodes are respectively arranged on the edges of the current collectors corresponding to the positive and negative electrodes, so that the charging current of the lithium battery is restricted, and the phenomenon that the charging of the lithium battery is slow is caused by the smaller charging current.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a fill lithium cell structure soon, its anodal utmost point ear sets up the middle part at the anodal mass flow body for the charging current that this lithium cell can bear is showing and is promoting, thereby realizes filling the function soon.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a fill lithium cell structure soon, includes anodal, negative pole, diaphragm, electrolyte, packaging structure, and anodal includes the anodal mass flow body, the anodal coating of coating on the anodal mass flow body surface and the anodal utmost point ear of welding at the anodal mass flow body middle part, and the negative pole includes the negative current body, the negative coating of coating on the negative current body surface and the negative pole utmost point ear of welding at the negative current body edge.

Preferably, the middle part of the positive current collector is provided with a reserved area I, the positive surface and the negative surface of the reserved area I are not coated with a positive coating, and a positive electrode tab is welded in the reserved area I.

Preferably, the middle part of the negative current collector is provided with a second reserved area, the second reserved area corresponds to one reserved area, and the front surface and the back surface of the second reserved area are not coated with the negative coating.

Preferably, the first reserved area is arranged at one third to one half of the positive electrode current collector.

Preferably, the front surface and the back surface of the first reserved area are in a metal exposed state, and the front surface and the back surface of the second reserved area are also in a metal exposed state.

Preferably, the positive electrode coating specifically includes an active material, a conductive carbon tube, and a binder.

Preferably, the negative electrode coating specifically includes graphite, a conductive agent, a thickener, and a binder.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model discloses a fill lithium cell structure soon, its anodal utmost point ear sets up at the middle part of the anodal mass flow body and non-traditional border position, consequently makes the charging current that this lithium cell can bear show the promotion, can realize filling soon, practices thrift the charge time greatly, has better practicality.

Drawings

Fig. 1 is a structural diagram of a positive electrode according to an embodiment of the present invention.

Fig. 2 is a structural diagram of a negative electrode according to an embodiment of the present invention.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1-2, an embodiment of the present invention includes:

the utility model provides a fill lithium cell structure soon, includes anodal 1, negative pole 6, diaphragm, electrolyte, packaging structure, anodal 1 includes anodal mass flow body 2, coating at anodal mass flow body 2 positive coating 3 on the surface and the welding is at anodal utmost point ear 4 at anodal mass flow body 2 middle part. The middle part of the positive current collector 2 is provided with a reserved area I5, the positive surface and the negative surface of the reserved area I5 are not coated with the positive coating 3, and the positive electrode lug 4 is welded in the reserved area I5. The reserve area one 5 is provided at one third to one half of the positive electrode current collector 2. The front surface and the back surface of the reserved area I5 are in a metal exposed state. The positive electrode coating 3 specifically includes an active material, a conductive carbon tube, and a binder. The negative electrode 6 includes a negative electrode current collector 7, a negative electrode coating 8 coated on the surface of the negative electrode current collector 7, and a negative electrode tab 9 welded to the edge of the negative electrode current collector 7. And a second reserved area 10 is arranged in the middle of the negative current collector 7, the second reserved area 10 corresponds to the first reserved area 5, and the front surface and the back surface of the second reserved area 10 are not coated with the negative coating 8. The front and back surfaces of the second reserved area 10 are also in a metal exposed state. The negative electrode coating 8 specifically includes graphite, a conductive agent, a thickener, and a binder.

The theory of operation is as follows, and its anodal utmost point ear sets up at the middle part of anodal mass flow body and traditional border position, consequently makes the charging current that this lithium cell can bear show and promotes, can realize filling soon, practices thrift the charge time greatly, has better practicality. Because the lithium battery applied to the mobile phone has stronger demand on quick charging, but does not need a quick discharging function, the negative pole lug of the mobile phone is provided with the edge of the negative pole current collector, the position of the negative pole current collector is the same as that of the traditional lug, and the original production line can be partially reserved, thereby being beneficial to the cost control of the production line.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. The utility model provides a fill lithium cell structure soon, includes anodal, negative pole, diaphragm, electrolyte, packaging structure, its characterized in that, anodal includes the anodal mass flow body, the anodal coating of coating on the anodal mass flow body surface and the anodal utmost point ear of welding at the anodal mass flow body middle part, the negative pole includes the negative current body, the coating negative coating on the negative current body surface and the negative pole utmost point ear of welding at the negative current body edge.

2. The structure of claim 1, wherein a first reserved area is formed in the middle of the positive current collector, positive coatings are not coated on the front and back surfaces of the first reserved area, and the positive tab is welded to the first reserved area.

3. The fast-charging lithium battery structure as claimed in claim 2, wherein a second reserved area is arranged in the middle of the negative current collector, the second reserved area corresponds to one reserved area, and the positive and negative surfaces of the second reserved area are not coated with the negative coating.

4. The structure of a fast-charging lithium battery as claimed in claim 2 or 3, wherein the first reserved area is disposed at one third to one half of the positive electrode current collector.

5. The structure of claim 4, wherein the front and back surfaces of the first reserved area are exposed, and the front and back surfaces of the second reserved area are also exposed.

6. A fast-charging lithium battery structure as claimed in claim 1, characterized in that the positive coating comprises in particular an active substance, conductive carbon tubes and a binder.

7. The fast-charging lithium battery structure as recited in claim 1, wherein the negative electrode coating specifically comprises graphite, a conductive agent, a thickener, a binder.