CN214068838U

CN214068838U - Battery module

Info

Publication number: CN214068838U
Application number: CN202120118715.2U
Authority: CN
Inventors: 钟帅波; 韦德初; 周冠宇; 程志刚; 张波
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-08-27
Anticipated expiration: 2031-01-15

Abstract

The utility model provides a battery module is equipped with the third end plate between two electric cores of this battery module, is equivalent to be equipped with the third end plate at the middle part (non-both ends) of battery module, then sets up the electric connector of battery module on the third end plate fixedly. Therefore, the wire harnesses of the battery module can be uniformly routed from the middle, so that the situation that the wire harnesses interfere with parts on the side of the battery pack box body to cause abrasion can be avoided, on the other hand, the wire harnesses are uniformly routed from the middle of the battery module, so that the wire harness design is simple, meanwhile, the situation that the wire harnesses are short-circuited due to positive and negative strong currents close to two ends is avoided, and the overall reliability of the battery module is greatly improved.

Description

Battery module

Technical Field

The utility model relates to battery technical field especially involves a battery module.

Background

At present, in the field of batteries of electric vehicles, electric connectors of battery modules are placed at two ends of the battery modules. A plurality of battery module are placed and are constituteed the battery package in the box, consequently, the both ends that electric connector placed battery module lead to pencil and battery package box side's part to have easily to interfere and produce wearing and tearing.

Disclosure of Invention

The utility model aims at providing a battery module to solve the problem that current battery module pencil easily wears and teares.

The technical scheme of the utility model is that:

a battery module comprises a plurality of battery cores which are stacked and arranged, and also comprises end plates and an electric connector; the end plates comprise a first end plate, a second end plate and a third end plate; the first end plate and the second end plate are respectively arranged at two ends of the battery module along the arrangement direction of the battery cells; the third end plate is arranged between two of the battery cells; and the electric connector is electrically connected with all the electric cores and fixed on the third end plate.

Further, the top surface of the third end plate is lower than the top surfaces of the battery cells, an accommodating space is formed above the third end plate between two battery cells on two sides of the third end plate, and the electric connector is arranged in the accommodating space.

Further, the electric connector is attached to one of the battery cells on two sides of the third terminal plate.

Further, the electrical connector includes a socket; the plugging direction of the plugging port is perpendicular to the arrangement direction of the battery cells.

Furthermore, the battery module also comprises a connecting sheet; the connecting sheet is arranged above the third end plate and is respectively and electrically connected with the two battery cells on the two sides of the third end plate; the connecting sheet is arranged inwards towards the third end plate.

Further, the connecting piece is made of aluminum.

Further, the connecting piece is of an integrally formed structure.

Furthermore, a plurality of hollow holes are formed in the end plates.

Furthermore, the end face of the end plate facing the battery core is provided with a buffer groove.

Furthermore, the battery module also comprises two side plates; the two side plates are respectively arranged at two sides of the battery module perpendicular to the arrangement direction of the battery cells; the position of the side plate corresponding to the accommodating space is provided with a notch.

Drawings

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of the region M in fig. 1.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. 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 disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Referring to fig. 1 and 2, the structure of a battery module according to an embodiment of the present invention is schematically illustrated.

The battery module of the present embodiment includes a plurality of stacked battery cells (not shown), and further includes an end plate and an electrical connector 1; the end plates comprise a first end plate 2, a second end plate 3 and a third end plate 4; the first end plate 2 and the second end plate 3 are respectively arranged at two ends of the battery module along the arrangement direction of the battery cells; the third end plate 4 is arranged between the two battery cells; the electric connector 1 is electrically connected with all the electric cores and fixed on the third terminal plate 4.

Under general conditions, the battery module comprises a plurality of electric cores of piling up the range to set up left end board and right end board on the outer terminal surface of two electric cores in the outside, then set up preceding curb plate and posterior lateral plate and be in on the side of all electric cores the top and the bottom of electric core set up apron and bottom plate, thereby pack all electric cores in the battery module fixedly. On the basis of the prior art, an intermediate end plate (namely, a third end plate 4) is additionally arranged between two battery cells, and then the electric connector 1 is arranged on the third end plate 4.

This embodiment provides a battery module, is equipped with third terminal plate 4 between two electric cores of this battery module, is equivalent to and is equipped with third terminal plate 4 at the middle part (not both ends) of battery module, then sets up battery module's electric connector 1 is fixed on third terminal plate 4. Therefore, the wire harnesses of the battery module can be uniformly routed from the middle, so that the situation that the wire harnesses interfere with parts on the side of the battery pack box body to cause abrasion can be avoided, on the other hand, the wire harnesses are uniformly routed from the middle of the battery module, so that the wire harness design is simple, meanwhile, the situation that the wire harnesses are short-circuited due to positive and negative strong currents close to two ends is avoided, and the overall reliability of the battery module is greatly improved.

Preferably, in the present embodiment, the third terminal plate 4 is disposed at an intermediate position of the battery module.

In the present embodiment, the top surface of the third terminal plate 4 is lower than the top surfaces of the battery cells, a containing space 5 is formed between the two battery cells on both sides of the third terminal plate 4 above the third terminal plate 4, and the electrical connector 1 is disposed in the containing space 5.

The present embodiment can reduce the overall height of the battery module by shortening the height of the third terminal plate 4 to form an accommodating space 5 in the battery module, and disposing the electrical connector 1 in the accommodating space 5.

In the present embodiment, the thickness of the third end plate 4 is greater than the thickness of the first end plate 2 and the second end plate 3, and the larger the thickness of the third end plate 4 is, the larger the width of the accommodating space 5 is. The specific thickness of the third end plate 4 of the present embodiment can be designed according to actual needs.

In this embodiment, the electrical connector 1 is attached to one of the battery cells on both sides of the third terminal plate 4. Paste electric connector 1 and lean on one of them electricity core in third terminal plate 4 both sides to set up electric connector 1 on accommodation space 5's a side edge, can improve the width of pencil in accommodation space 5's the line space of walking like this, thereby be convenient for the pencil walk the line in accommodation space 5.

In the present embodiment, the electrical connector 1 includes a socket 1 a; the plugging direction of the socket 1a is perpendicular to the cell arrangement direction. This embodiment is through putting electric connector 1 on one's side, makes its interface 1a towards the side of battery module, realizes that electric connector 1 plugs from the side, and the plug connection of electric connector 1 is greatly convenient for. In other embodiments, the electrical connector 1 is not limited to being placed on the side, and other placement manners may be adopted.

In this embodiment, the battery module further includes a connecting sheet 6; the connecting sheet 6 is arranged above the third end plate 4, and the connecting sheet 6 is respectively electrically connected with two battery cells at two sides of the third end plate 4; the connecting sheet 6 is arranged inwards towards the third end plate 4. As shown in fig. 1, the connecting sheet 6 is concavely arranged to form a structure shaped like a Chinese character ji, so that the connecting sheet is attached to the side surfaces of two cells on two sides and the third end plate 4, thereby facilitating the passing of the wiring harness above the connecting sheet 6 and greatly increasing the moving space of the wiring harness. The connecting sheet 6 is made of aluminum and is of an integrally formed structure, the aluminum material is adopted, the connecting sheet 6 in the appointed shape can be formed by direct machining in a stamping mode, the machining process is simplified, meanwhile, the weight of the connecting sheet 6 is reduced, and further the weight of the battery module is reduced.

In the present embodiment, the end plates (including the first end plate 2, the second end plate 3 and the third end plate 4) are all provided with a plurality of hollow holes 7. Set up fretwork hole 7 on the end plate, greatly reduced the material cost of end plate under the prerequisite of guaranteeing end plate intensity and rigidity, realize battery module's lightweight design simultaneously.

In this embodiment, the end plates (including the first end plate 2, the second end plate 3, and the third end plate 4) are provided with buffer grooves (not shown) on end surfaces thereof facing the battery cell. Specifically, first end plate 2 is equipped with above-mentioned buffering recess towards a terminal surface of electric core, and second end plate 3 is equipped with above-mentioned buffering recess towards a terminal surface of electric core, all is equipped with above-mentioned buffering recess on two terminal surfaces of third end plate 4 orientation electric core. This embodiment all is equipped with the buffering recess on the terminal surface of end plate orientation electricity core and makes first end plate 2, second end plate 3 and the assembly of third end plate 4 accomplish the back, can produce the pressure that the buffering clearance absorbed the production of electric core inflation, reduces because of the battery inflation and the harm that causes the end plate, improves the security that the battery module used.

In this embodiment, the battery module further includes two side plates 8; the two side plates 8 are respectively arranged on two sides of the battery module perpendicular to the arrangement direction of the battery cells; the side plate 8 is provided with a notch 81 corresponding to the position of the accommodating space 5. The notch 81 is formed in the side plate 8, so that the wire harness arranged in the accommodating space 5 can be avoided, and the wire harness can directly pass through the notch 81 without being blocked by the side plate 8. The design can reduce the buckling of pencil like this, avoids the pencil to damage because of excessively buckling.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. A battery module comprises a plurality of battery cores which are stacked and arranged, and is characterized by also comprising end plates and an electric connector; the end plates comprise a first end plate, a second end plate and a third end plate; the first end plate and the second end plate are respectively arranged at two ends of the battery module along the arrangement direction of the battery cells; the third end plate is arranged between two of the battery cells; and the electric connector is electrically connected with all the battery cells and fixed on the third end plate.

2. The battery module of claim 1, wherein the top surface of the third end plate is lower than the top surfaces of the battery cells, a receiving space is formed between two battery cells on two sides of the third end plate above the third end plate, and the electrical connector is disposed in the receiving space.

3. The battery module according to claim 2, wherein the electrical connector is attached to one of the battery cells on two sides of the third terminal plate.

4. The battery module as set forth in claim 2, wherein the electrical connector comprises a socket; the plugging direction of the plugging port is perpendicular to the arrangement direction of the battery cells.

5. The battery module according to claim 2, further comprising a connecting tab; the connecting sheet is arranged above the third end plate and is respectively and electrically connected with the two battery cells on the two sides of the third end plate; the connecting sheet is arranged towards the third end plate in a concave mode.

6. The battery module according to claim 5, wherein the connecting tab is made of aluminum.

7. The battery module according to claim 6, wherein the connecting tab is of an integrally formed structure.

8. The battery module according to claim 1, wherein the end plates are each provided with a plurality of hollowed-out holes.

9. The battery module according to claim 1, wherein the end face of the end plate facing the battery core is provided with a buffer groove.

10. The battery module according to claim 2, further comprising two side plates; the two side plates are respectively arranged on two sides of the battery module perpendicular to the arrangement direction of the battery cells; and a notch is arranged at the position of the side plate corresponding to the accommodating space.