CN211670264U

CN211670264U - Lithium battery negative electrode material structure containing conductive agent

Info

Publication number: CN211670264U
Application number: CN202020111697.0U
Authority: CN
Inventors: 吕建军
Original assignee: Institute Of New Energy Wuhan Co ltd
Current assignee: Institute Of New Energy Wuhan Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-13
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to a negative electrode material structure of a lithium battery containing a conductive agent, which comprises a lithium battery body; the top of the lithium battery body is provided with a cover plate, the top of the cover plate is provided with a negative electrode hole, and the top of the negative electrode hole is provided with a fixed sleeve; an aluminum plate, a copper plate and a sealing ring are sequentially arranged in the fixed sleeve from top to bottom, and the aluminum plate is fixedly connected with the copper plate through conductive adhesive; the aluminum plate, the copper plate and the sealing ring are fixed in the fixed sleeve through the fixed cover; the fixing sleeve and the fixing cover are both made of insulating materials. The utility model has the advantages that: through being connected aluminum plate and copper through conducting resin, fix aluminum plate and copper in fixed cover through fixed lid simultaneously, can improve the reliability that aluminum plate and copper are connected, prevent the fracture between aluminum plate and the copper.

Description

Lithium battery negative electrode material structure containing conductive agent

Technical Field

The utility model relates to a lithium cell technical field especially relates to a contain conducting agent lithium cell cathode material structure.

Background

With the continuous development and progress of human society, the living standard of human beings is continuously improved, and the demand on energy sources is also continuously increased, especially the demand on movable portable energy source equipment. Among them, batteries as mobile energy storage batteries have been developed rapidly, and especially, the batteries are applied to the traffic field, and have great superiority as compared with the conventional internal combustion engine using fuel as power.

At present, the negative electrode of the lithium ion power battery has two structures, one is made of pure copper, and the lithium ion power battery has the advantages of stable structure and high weight and cost; the other is a copper-aluminum composite structure, after aluminum materials and copper materials are welded together through friction welding to form the composite structure, the copper materials are processed into sheets and aluminum materials into columns, the copper sheet is arranged in the battery, the aluminum column penetrates through a cover plate cathode hole, and the copper sheet and the aluminum column are riveted and welded to be used as a cathode of the battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a contain conducting agent lithium cell cathode material structure is provided, solve the not enough of prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a negative electrode material structure of a lithium battery containing a conductive agent comprises a lithium battery body; the top of the lithium battery body is provided with a cover plate, the top of the cover plate is provided with a negative electrode hole, and the top of the negative electrode hole is provided with a fixed sleeve; an aluminum plate, a copper plate and a sealing ring are sequentially arranged in the fixed sleeve from top to bottom, and the aluminum plate is fixedly connected with the copper plate through conductive adhesive; the aluminum plate, the copper plate and the sealing ring are fixed in the fixing sleeve through a fixing cover; the fixing sleeve and the fixing cover are both made of insulating materials.

The utility model has the advantages that: through being connected aluminum plate and copper through conducting resin, fix aluminum plate and copper in fixed cover through fixed lid simultaneously, can improve the reliability that aluminum plate and copper are connected, prevent the fracture between aluminum plate and the copper.

Further: the outer surface of the fixing sleeve is provided with external threads, the inner surface of the fixing cover is provided with internal threads matched with the external threads, and the fixing sleeve is connected with the fixing cover through the internal threads and the external threads.

The beneficial effects of the further scheme are as follows: the cover plate can be conveniently fixed on the fixing sleeve or detached from the fixing sleeve.

Further: the conductive adhesive is composed of a conductive agent and rubber.

The beneficial effects of the further scheme are as follows: the conductive agent can make the copper plate and the aluminum plate conductive, and the rubber can be used for fixing the aluminum plate and the copper plate.

Further: the fixed top of covering is equipped with the through-hole, aluminum plate includes the base plate and establishes the aluminium post at base plate top, the base plate pass through the conducting resin with copper fixed connection, the aluminium post upper end is passed the through-hole extends to fixed cover outside.

The beneficial effects of the further scheme are as follows: the external negative electrode wiring can be conveniently connected with the aluminum column.

Further: still include the negative pole utmost point ear, the copper with the negative pole utmost point ear upper end is connected, the negative pole utmost point ear lower extreme passes the sealing washer with the negative pole hole with the inside inner core of lithium cell body is connected.

The beneficial effects of the further scheme are as follows: the arrangement of the negative pole tab is safe and reliable, the processing is simple, and the production cost of the negative pole material structure is saved.

Drawings

Fig. 1 is a schematic structural diagram of a negative electrode material of a lithium battery containing a conductive agent according to an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

in the figure: 1. a lithium battery body; 2. a cover plate; 21. a negative electrode hole; 3. fixing a sleeve; 4. an aluminum plate; 41. A substrate; 42. an aluminum column; 5. a copper plate; 6. a seal ring; 7. a conductive adhesive; 8. a fixed cover; 81. a through hole; 9. a negative electrode tab; 10. an inner core.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example one

As shown in fig. 1-2, a negative electrode material structure of a lithium battery containing a conductive agent comprises a lithium battery body 1; the top of the lithium battery body 1 is provided with a cover plate 2, the top of the cover plate 2 is provided with a negative electrode hole 21, and the top of the negative electrode hole 21 is provided with a fixed sleeve 3; an aluminum plate 4, a copper plate 5 and a sealing ring 6 are sequentially arranged in the fixed sleeve 3 from top to bottom, and the aluminum plate 4 and the copper plate 5 are fixedly connected through a conductive adhesive 7; the aluminum plate 4, the copper plate 5 and the sealing ring 6 are fixed in the fixing sleeve 3 through a fixing cover 8; the fixing sleeve 3 and the fixing cover 8 are both made of insulating materials.

Example two

The outer surface of the fixed sleeve 3 is provided with external threads, the inner surface of the fixed cover 8 is provided with internal threads matched with the external threads, and the fixed sleeve 3 and the fixed cover 8 are connected through the internal threads and the external threads.

EXAMPLE III

The conductive paste 7 is composed of a conductive agent and rubber.

Example four

Fixed lid 8 top is equipped with through-hole 81, and aluminum plate 4 includes base plate 41 and establishes the aluminium post 42 at base plate 41 top, and base plate 41 passes through conducting resin 7 and copper 5 fixed connection, and the through-hole 81 is passed and fixed cover 3 outside is extended to aluminium post 42 upper end.

EXAMPLE five

The lithium battery also comprises a negative pole lug 9, the copper plate 5 is connected with the upper end of the negative pole lug 9, and the lower end of the negative pole lug 9 penetrates through the sealing ring 6 and the negative pole hole 21 to be connected with the inner core 10 inside the lithium battery body 1.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The negative electrode material structure of the lithium battery containing the conductive agent is characterized by comprising a lithium battery body (1); the top of the lithium battery body (1) is provided with a cover plate (2), the top of the cover plate (2) is provided with a negative electrode hole (21), and the top of the negative electrode hole (21) is provided with a fixed sleeve (3); an aluminum plate (4), a copper plate (5) and a sealing ring (6) are sequentially arranged in the fixed sleeve (3) from top to bottom, and the aluminum plate (4) is fixedly connected with the copper plate (5) through a conductive adhesive (7); the aluminum plate (4), the copper plate (5) and the sealing ring (6) are fixed in the fixed sleeve (3) through a fixed cover (8); the fixing sleeve (3) and the fixing cover (8) are both made of insulating materials.

2. The negative electrode material structure of a lithium battery containing a conductive agent as claimed in claim 1, wherein the external surface of the fixing sleeve (3) is provided with an external thread, the internal surface of the fixing cover (8) is provided with an internal thread matching with the external thread, and the fixing sleeve (3) and the fixing cover (8) are connected with the external thread through the internal thread.

3. The negative electrode material structure of a lithium battery containing a conductive agent according to claim 1, wherein the conductive paste (7) is composed of a conductive agent and rubber.

4. The negative electrode material structure of a lithium battery containing a conductive agent according to claim 1, wherein a through hole (81) is formed at the top of the fixing cover (8), the aluminum plate (4) comprises a substrate (41) and an aluminum pillar (42) formed at the top of the substrate (41), the substrate (41) is fixedly connected with the copper plate (5) through a conductive adhesive (7), and the upper end of the aluminum pillar (42) passes through the through hole (81) and extends to the outside of the fixing sleeve (3).

5. The negative electrode material structure of a lithium battery containing a conductive agent according to claim 1, further comprising a negative electrode tab (9), wherein the copper plate (5) is connected with the upper end of the negative electrode tab (9), and the lower end of the negative electrode tab (9) is connected with the inner core (10) inside the lithium battery body (1) through the sealing ring (6) and the negative electrode hole (21).