CN212874656U

CN212874656U - Lithium battery module based on improved side plate and top cover connecting structure

Info

Publication number: CN212874656U
Application number: CN202021418876.5U
Authority: CN
Inventors: 王玉稳; 程威; 沈重洋; 陈冬; 陈家胜
Original assignee: Disida New Energy Shanghai Co ltd
Current assignee: Disida New Energy Shanghai Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-02
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a lithium battery module based on curb plate and top cap connection structure improve, the lithium battery module includes module top cap, module bottom, busbar, curb plate, electric core, silica gel piece, thermal-insulated cotton and end plate, the module top cap is located and is played the guard action on the module bottom cap, be equipped with the busbar on the electric core, a plurality of electric cores switch on through the busbar, the both ends of electric core are equipped with the end plate, be equipped with thermal-insulated cotton between electric core and the end plate, the both sides of electric core are equipped with the curb plate, the curb plate bottom is equipped with the silica gel piece, the lithium battery module still includes: a connecting piece, its swing joint who is used for module top cap and curb plate, including buckle and draw-in groove, the buckle is established on the hem of module top cap, and the draw-in groove is established on the extension edge of curb plate, and the buckle card of module top cap is gone into in the draw-in groove on the curb plate. The utility model discloses can make the curb plate closely laminate electric core to inside atress, increase the area of contact on curb plate and electric core surface and improve the radiating efficiency to can prolong the life of electric core.

Description

Lithium battery module based on improved side plate and top cover connecting structure

Technical Field

The utility model relates to a lithium battery module, more specifically say, the utility model relates to a lithium is based on curb plate and top cap connection structure modified lithium battery module.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a negative electrode material. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. With the development of science and technology, lithium batteries have become the mainstream nowadays.

The lithium battery module is a plurality of modules formed by connecting several to hundreds of battery cells in parallel and in series. Specifically, the following structure is generally included: as shown in fig. 1, the module comprises a module top cover 1, a module bottom cover 2, a bus bar 3, a side plate 4, a battery cell 5, a silica gel sheet 6, heat insulation cotton 7 and an end plate 8, wherein the module top cover 1 and the side plate 4 are fixed in a buckling manner.

However, in this structure (as shown in fig. 2), the side plate 4 may deform, so that the adhesion degree of the gap between the side plate and the surface of the battery cell 5 is not enough, which may affect the heat dissipation of the battery cell 5, and the long-term use of this structure may affect the service life of the battery cell.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.

The utility model discloses still another purpose provides a lithium is based on curb plate and top cap connection structure modified lithium cell module, and it can make the curb plate closely laminate electric core to inside atress.

The utility model provides a lithium battery module based on curb plate and top cap connection structure improve, lithium battery module includes module top cap, module bottom, busbar, curb plate, electric core, silica gel piece, thermal-insulated cotton and end plate, the module top cap is located play the guard action on the module bottom cap, be equipped with the busbar on the electric core, a plurality of electric cores switch on through the busbar, the both ends of electric core are equipped with the end plate, electric core with be equipped with between the end plate thermal-insulated cotton, the both sides of electric core are equipped with the curb plate, the curb plate bottom is equipped with the silica gel piece, lithium battery module still includes:

a connecting piece, it is used for the swing joint of module top cap and curb plate, including buckle and draw-in groove, the buckle is established on the hem of module top cap, the draw-in groove is established the extension edge of curb plate, the buckle card of module top cap is gone into in the draw-in groove on the curb plate.

In one embodiment, the periphery of the module top cover is provided with a buckle, and the periphery of the side plate is provided with a clamping groove matched with the buckle.

In one embodiment, the buckle includes a body and a hook portion integrally designed with the body, and the hook portion is connected with the slot in a clamping manner.

In one embodiment, the detachable connection between the side plate and the end plate is realized by providing screw holes at two side positions of the side plate, and providing corresponding screw holes at positions of the end plate corresponding to the side plate, and penetrating bolts in the two screw holes.

In one embodiment, the bus bar is fixed to the electric core by screw locking or riveting.

In an embodiment, the lithium battery module further comprises an insulating plate, the insulating plate on the side is arranged between the side plate and the battery core, and the insulating plate can be further provided with an inner insulating layer which is respectively positioned on the inner side of the end plate or the inner side of the side plate.

The utility model discloses at least, include following beneficial effect: because the structure between module top cap and the curb plate is improved, this kind of connection structure can make the curb plate closely laminate electric core to the atress inside, increases curb plate and electric core surface's area of contact and improves the radiating efficiency to can prolong the life of electric core.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a lithium battery module in the prior art;

FIG. 2 is a schematic diagram illustrating a connection between a top cover and a bottom cover of a lithium battery module according to the prior art;

fig. 3 is a schematic view illustrating a connection between a module top cover and a side plate of a lithium battery module according to an embodiment of the present invention.

Description of reference numerals:

1: a module top cover; 2: a module bottom cover; 3: a bus bar; 4: a side plate; 5: an electric core; 6: a silica gel sheet; 7: heat insulation cotton; 8: an end plate; 9: buckling; 10: a clamping groove.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Fig. 3 shows an implementation form according to the present invention, wherein the lithium battery module includes a module top cover 1, a module bottom cover 2, a busbar 3, a side plate 4, an electric core 5, a silica gel sheet 6, a heat insulation cotton 7 and an end plate 8.

Wherein, on module top cap 1 located module bottom 2, module top cap 1's effect played the guard action to the internally mounted, and the protection is effectual, and the security of use is high.

Wherein, be equipped with busbar 3 on electric core 5, a plurality of electric cores 5 switch on through busbar 3, and busbar 3 is connected for being electric with electric core 5, and electric core 5's both ends are equipped with end plate 8, are equipped with thermal-insulated cotton 7 between electric core 5 and the end plate 8, and thermal-insulated cotton 7 can fix the isolation to a plurality of angles of battery, guarantees security and the insulating effect that the battery module used.

Wherein, the both sides of electricity core 5 are equipped with

curb plate

4, and 4 bottoms of curb plate are equipped with silica gel piece 6. The silica gel sheet 6 plays a role in heat conduction, can conduct heat emitted by the battery cell 5 to the side plate 4, and accelerates heat transfer through the side plate 4 made of a metal material.

Specifically, the silicone sheet 6 is made of silicone rubber, and the thermal conductivity coefficient is 1.5W.K/M-3.5 W.K/M.

In an embodiment, the lithium battery module further comprises a connecting piece, the connecting piece is used for movably connecting the module top cover 1 and the side plate 4 and comprises a buckle 9 and a clamping groove 10, the buckle 9 is arranged on a folding edge of the module top cover 1, the clamping groove 10 is arranged on an extending edge of the side plate 4, and the buckle 9 of the module top cover 1 is clamped into the clamping groove 10 on the side plate 4. The module top cover 1 and the side plates are connected in a clamping mode, so that the installation is convenient, and the heat dissipation, safety and reliability of the lithium battery module are improved.

In an embodiment, the lithium battery module further comprises an insulating plate, the insulating plate on the side is arranged between the side plate 4 and the battery core 5, and the insulating plate can be further provided with an inner insulating layer which is respectively positioned on the inner side of the end plate 8 or the inner side of the side plate 4, so that the short circuit of the battery can be effectively prevented.

In one embodiment, for better effect, the module top cover 1 is provided with the buckle 9 all around, and the curb plate 4 is provided with all around with buckle 9 complex draw-in groove 10.

In one embodiment, the buckle 9 includes a body and a hook integrally designed with the body, and the hook is connected with the slot 10 in a snap-fit manner.

Furthermore, the utility model discloses an in one or more embodiments, can satisfy the equipment of the lithium battery module of different specifications through the combination standard component of buckle and the different modes of draw-in groove, the commonality is strong, and application scope is wide.

In an embodiment, the detachable connection between the side plate 4 and the end plate 8 is realized by arranging screw holes at positions on two sides of the side plate 4, the end plate 8 is also provided with corresponding screw holes at a position corresponding to the side plate 4, and the structure limits the side plate 4 and the end plate 8 and the like by penetrating through bolts in the two screw holes, thereby further increasing the stability of the lithium battery module, preventing the lithium battery module from short circuit or open circuit caused by displacement, and being beneficial to reducing potential safety hazards.

In one embodiment, the bus bar 3 is fixed on the battery cell 5 in a screw locking or riveting manner, so that the overall stability and the use safety of the lithium battery module are improved.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the lithium battery module of the present invention will be apparent to those skilled in the art.

As described above, according to the utility model discloses, owing to improved the structure between module top cap and the curb plate, this kind of connection structure can make the curb plate closely laminate electric core to inside atress, increases the area of contact on curb plate and electric core surface and improves the radiating efficiency to can prolong the life of electric core.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. The utility model provides a lithium battery module based on curb plate and top cap connection structure improve, lithium battery module includes module top cap, module bottom, busbar, curb plate, electric core, silica gel piece, thermal-insulated cotton and end plate, the module top cap is located play the guard action on the module bottom cap, be equipped with the busbar on the electric core, a plurality of electric cores switch on through the busbar, the both ends of electric core are equipped with the end plate, electric core with be equipped with between the end plate thermal-insulated cotton, the both sides of electric core are equipped with the curb plate, the curb plate bottom is equipped with the silica gel piece, its characterized in that, lithium battery module still includes:

2. The lithium battery module based on the improvement of the side plate and top cover connecting structure as claimed in claim 1, wherein the periphery of the module top cover is provided with a buckle, and the periphery of the side plate is provided with a clamping groove matched with the buckle.

3. The lithium battery module based on the improvement of the side plate and top cover connecting structure as claimed in claim 1, wherein the buckle comprises a body and a hook part integrally designed with the body, and the hook part is connected with the slot in a clamping manner.

4. The lithium battery module as claimed in claim 1, wherein the detachable connection between the side plate and the end plate is achieved by providing screw holes at both sides of the side plate, and corresponding screw holes at positions of the end plate corresponding to the side plate, and passing bolts through the two screw holes.

5. The lithium battery module based on the improvement of the side plate and top cover connecting structure as claimed in claim 1, wherein the bus bar is fixed on the battery core by screw locking or riveting.

6. The improved lithium battery module based on the side plate and top cover connecting structure as claimed in claim 1, wherein the lithium battery module further comprises an insulating plate, the side insulating plate is disposed between the side plate and the battery core, and the insulating plate may further be designed with an inner insulating layer respectively located inside the end plate or inside the side plate.