CN210349882U

CN210349882U - Battery pack

Info

Publication number: CN210349882U
Application number: CN201921431611.6U
Authority: CN
Inventors: 许广正
Original assignee: Dongfeng Motor Co Ltd
Current assignee: Dongfeng Motor Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-04-17
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a battery pack, which comprises a battery module, a module terminal arranged on the battery module, a connecting terminal used for being electrically connected with the module terminal and a pressing sheet used for pressing the connecting terminal and the module terminal together; the module terminal is mounted on the battery module; the pressing piece is mounted on the battery module through a fastener; the wiring terminal is at least partially contacted with the module terminal, and the wiring terminal is assembled with the module terminal through the pressing piece. The utility model discloses a battery pack has improved the electric conductive property between module terminal and the binding post, has improved the unfavorable factor that the terminal generates heat, has improved insulating effect, the cost is reduced, easy to assemble.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery package.

Background

The battery pack is an essential part of the electric automobile, the maximum appearance of the battery pack meets the requirement of the installation space of the whole automobile, and the installation and maintenance of the battery pack are considered during design. The battery pack is arranged at a position where the battery pack needs to be impacted, vibrated, turned on one side and the like, and the box body can bear certain impact force. The inside of the battery pack is favorable for arrangement and installation of the battery modules or the battery modules.

The battery module is generally provided with a module copper bar (module terminal), and the module copper bar is used for outputting current. The wiring copper bar (wiring terminal) is used for being connected with an external lead, and the wiring copper bar and the module copper bar are assembled together and used for conducting electricity.

In the prior art, through holes are generally formed in the module copper bar and the wiring copper bar respectively, and the module copper bar and the wiring copper bar are directly assembled together through bolts.

The existing installation mode has the following defects:

1. the copper bar is perforated to influence the over-current capability to a certain extent.

2. The in-process of bolt-up for the copper bar receives torsion easily, damages the surface coating, and then increases contact resistance, leads to generating heat seriously.

3. Need be insulated at the outside cladding insulating part of wiring copper bar and bolt, the cost is increased, and the inconvenient installation cladding of insulating part, has the electric leakage risk.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can improve the electric capacity, simple structure, easy to assemble's battery package.

The technical scheme of the utility model provides a battery pack, including battery module, set up module terminal on the said battery module, be used for with the binding post of the electrical connection of the said module terminal and be used for pressing the said binding post with the said module terminal compresses tightly the piece together;

the module terminal is mounted on the battery module;

the pressing piece is mounted on the battery module through a fastener;

the wiring terminal is at least partially contacted with the module terminal, and the wiring terminal is assembled with the module terminal through the pressing piece.

Further, a mounting groove is provided on the battery module, and the module terminal is mounted in the mounting groove.

Furthermore, a positioning groove is formed in the module terminal, and a positioning piece extends towards the module terminal side on the wiring terminal;

the positioning sheet is inserted into the positioning groove.

Furthermore, the two sides of the module terminal are respectively provided with the positioning grooves, and the two sides of the wiring terminal are respectively provided with the positioning sheets;

the positioning sheets on each side are correspondingly inserted into the positioning grooves respectively.

Furthermore, the pressing sheet comprises a pressing sheet main body and two connecting sheets, and the two connecting sheets are arranged at two ends of the pressing sheet main body;

one side of the pressing sheet main body facing the wiring terminal is provided with a limiting groove;

the wiring terminal is located in the limiting groove, and the two connecting pieces are respectively installed on the battery module through the fasteners.

Further, a protrusion for pressing the connection terminal is provided on a side of the pressing piece facing the connection terminal.

Further, two or more than two convex parts are arranged on the pressing sheet at intervals.

Further, a connecting end for connecting with an external lead is connected to the wiring terminal;

the connecting end is positioned at the outer side of the battery module;

a terminal insulating layer is disposed on the connection end.

Further, the link with binding post is connected and is the L type.

Further, an insulation sheet is arranged between the pressing sheet and the wiring terminal; or,

and an insulating layer is arranged on one side of the pressing piece facing the wiring terminal.

By adopting the technical scheme, the method has the following beneficial effects:

the utility model provides a battery pack compresses tightly binding post on the module terminal through compressing tightly the piece, and the piece that compresses tightly is fixed on the battery module, need not trompil on the terminal to the electric conductive property between module terminal and the binding post has been improved.

In the installation, the pressing piece is pressed on the wiring terminal, so that torsion cannot be applied to the module terminal and the wiring terminal, the possibility of damaging a terminal coating is reduced, the conductivity between the module terminal and the wiring terminal is further improved, and the adverse factor of terminal heating is improved.

Through set up insulating piece or insulating layer between compact disc and binding post, can effectively insulate to binding post, improved insulating effect.

To sum up, the utility model provides a battery pack has improved the electric conductive property between module terminal and the binding post, has improved the unfavorable factor that the terminal generates heat, has improved insulating effect, the cost is reduced, easy to assemble.

Drawings

Fig. 1 is a perspective view of a battery pack according to an embodiment of the present invention;

fig. 2 is an exploded view of the battery pack shown in fig. 1;

fig. 3 is a schematic view of the assembly of the module terminals, the connection terminals, the insulation sheets and the compression sheets on the battery module;

fig. 4 is a perspective view of a first perspective of the module terminals and wire terminals;

fig. 5 is a perspective view of the module terminal and the connection terminal from a second perspective.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-5, an embodiment of the present invention provides a battery pack, which includes a battery module 1, a module terminal 2 disposed on the battery module 1, a connection terminal 3 electrically connected to the module terminal 2, and a pressing sheet 4 for pressing the connection terminal 3 and the module terminal 2 together.

The module terminal 2 is mounted on the battery module 1.

The pressing pieces 4 are mounted on the battery module 1 by fasteners 5. The terminal 3 is at least partially in contact with the module terminal 2, and the terminal 3 is assembled with the module terminal 2 by the pressing piece 4.

The utility model provides a battery package mainly comprises battery module 1, module terminal 2, binding post 3, compressing tightly piece 4 and fastener 5.

The battery module 1 is a lithium battery module and is used as a power supply. The module terminal 2 is disposed on the battery module 1, and the module terminal 2 may be a copper bar. The module terminal 2 is mounted on the battery module 1 for being assembled with the connection terminal 3 to be conductive. The module terminal 2 may be detachably mounted to the battery module 1 directly by a fastener (e.g., a screw, a bolt, etc.), or may be welded and fixed to the battery module 1.

The connecting terminal 3 can be a copper bar, which is used for conducting with the module terminal 2, and the connecting terminal 3 is also used for connecting with an external lead to output current.

The pressing sheet 4 can be a metal sheet or an insulating sheet. The pressing piece 4 is fixedly mounted on the battery module 1 by a fastener 5. The fastener 5 may be a bolt or a screw.

The pressing piece 4 is used for pressing the wiring terminal 3 on the module terminal 2, and assembling the wiring terminal 3 and the module terminal 2 together to realize electric conduction.

Therefore, the utility model provides a battery pack compresses tightly binding post 3 on module terminal 2 through compressing tightly piece 4, and compressing tightly piece 4 is fixed on battery module 1, need not trompil on binding post 3 and module terminal 2 to the electric conductive property between module terminal 2 and binding post 3 has been improved.

In the installation, pressing sheet 4 presses on binding post 3, can not exert torsion to module terminal 2 and binding post 3, has reduced the possibility of damaging the terminal cladding material, has further improved the electric conductive property between module terminal 2 and binding post 3, has improved the unfavorable factor that the terminal generates heat.

Preferably, as shown in fig. 3, a mounting groove 10 is provided on the battery module 1, and the module terminal 2 is mounted in the mounting groove 10.

By installing the module terminal 2 in the installation groove 10, positioning can be provided for the module terminal 2, facilitating installation.

Preferably, the surface of the module terminal 2 is flush with the surface of the battery module 1 when the module terminal 2 is mounted in the mounting groove 10.

Preferably, as shown in fig. 4 to 5, a positioning groove 21 is provided on the module terminal 2, and a positioning piece 31 extends on the connection terminal 3 toward the module terminal 2 side. The positioning piece 31 is inserted into the positioning groove 21.

Through set up positioning groove 21 on module terminal 2, set up spacer 31 on binding post 3, during the equipment, spacer 31 inserts in positioning groove 21, does benefit to the stability that improves equipment module terminal 2 and binding post 3 to the convenience is assembled binding post 3 on module terminal 2.

The positioning piece 31 is integrally formed on the wiring terminal 3, so that the structural strength is improved.

Preferably, as shown in fig. 4 to 5, positioning grooves 21 are respectively formed at both sides of the module terminal 2, and positioning pieces 31 are respectively formed at both sides of the connection terminal 3. The positioning pieces 31 of each side are respectively inserted into the positioning grooves 21.

Positioning grooves 21 are provided on both sides in the width direction of the module terminal 2, and correspondingly, positioning pieces 31 are provided on both sides in the width direction of the connection terminal 3. During assembly, the positioning pieces 31 on the two sides are correspondingly inserted into the positioning grooves 21 respectively, so that the stability of the assembled module terminal 2 and the assembled wiring terminal 3 is further improved.

Preferably, as shown in fig. 1 to 3, the pressing piece 4 includes a pressing piece main body 41 and two connecting pieces 42, and the two connecting pieces 42 are provided at both ends of the pressing piece main body 41.

The pressing piece body 41 has a stopper groove 43 on the side thereof facing the wire terminal 3.

The wiring terminal 3 is positioned in the limiting groove 43, and the two connecting sheets 42 are respectively installed on the battery module 1 through the fasteners 5.

The pressing piece 4 mainly consists of a pressing piece main body 41 and two connecting pieces 42. Two connecting pieces 42 are arranged at two ends of the pressing piece main body 41, and the connecting pieces 42 and the pressing piece main body 41 are integrally formed. The bottom of compressing tightly piece main part 41 has spacing recess 43, during the equipment, installs binding post 3 in spacing recess 43, installs two connection pieces 42 on battery module 1 through fastener 5 respectively, has promoted the stability and the fastness of structure.

Preferably, as shown in fig. 2 to 3, a projection 44 for pressing the connection terminal 3 is provided on the pressing piece 4 on the side facing the connection terminal 3. The projection 44 is used to press the connection terminal 3 so that the connection terminal 3 is in close contact with the module terminal 2, which is advantageous for maintaining electrical conduction.

Preferably, as shown in fig. 2 to 3, two or more protrusions 44 are provided on the pressing piece 4 at intervals, so that the pressing effect on the wire connecting terminal 3 is improved.

Preferably, as shown in fig. 1-2, a connection terminal 32 for connection with an external wire is connected to the connection terminal 3. The connection terminal 32 is located outside the battery module 1, and a terminal insulating layer is provided on the connection terminal 32.

The connection end 32 is used for connection to an external wire. The connection end 32 is coated with a terminal insulating layer to improve an insulating effect.

Preferably, the terminal insulating layer is an insulating heat shrinkable tube. The insulating heat-shrinkable tube is a heat-shrinkable sleeve made of insulation, has a special function of shrinking when being heated, can be shrunk and sleeved on the connecting end 32 when being heated to a preset temperature, and is convenient to use.

Preferably, as shown in fig. 2, the connection end 32 is connected to the connection terminal 3 in an L-shape. The connecting end 32 and the connecting terminal 3 are integrally formed and connected in an L shape, so that the installation is convenient.

Preferably, as shown in fig. 2 to 3, an insulating sheet 6 is provided between the pressing sheet 4 and the terminal block 3. Alternatively, an insulating layer is provided on the side of the pressure piece 4 facing the terminal 3.

The insulating sheet 6 may be a sheet of insulating material such as a plastic sheet, a rubber sheet, or the like.

The insulating sheet 6 is clamped between the pressing sheet 4 and the wiring terminal 3 to play a role of insulating shielding. In order to improve the insulating effect even more, a part of the insulating sheet 6 is also clamped between the battery module 1 and the pressing sheet 4.

Of course, an insulating layer may also be disposed or coated directly on the bottom surface of the pressing piece 4, and the insulating layer may be directly attached to the bottom surface of the pressing piece 4. The insulating layer can be a common rubber layer or an insulating material coating. The insulating material coating can be an inorganic high-temperature material coating, and a compact insulating coating can be formed on the surface of the pressing sheet 4.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims

1. A battery pack is characterized by comprising a battery module, a module terminal arranged on the battery module, a connecting terminal used for being electrically connected with the module terminal and a pressing sheet used for pressing the connecting terminal and the module terminal together;

the module terminal is mounted on the battery module;

the pressing piece is mounted on the battery module through a fastener;

2. The battery pack according to claim 1, wherein a mounting groove is provided on the battery module, and the module terminal is mounted in the mounting groove.

3. The battery pack according to claim 1, wherein a positioning groove is provided on the module terminal, and a positioning piece extends on the terminal toward the module terminal side;

the positioning sheet is inserted into the positioning groove.

4. The battery pack according to claim 3, wherein the positioning grooves are provided on both sides of the module terminal, and the positioning pieces are provided on both sides of the connection terminal, respectively;

5. The battery pack according to claim 1, wherein the pressing piece includes a pressing piece main body and two connecting pieces provided at both ends of the pressing piece main body;

6. The battery pack according to claim 1, wherein a protrusion for pressing the connection terminal is provided on a side of the pressing piece facing the connection terminal.

7. The battery pack according to claim 6, wherein two or more protrusions are provided at intervals on the pressing sheet.

8. The battery pack according to claim 1, wherein a connection terminal for connection with an external wire is connected to the connection terminal;

the connecting end is positioned at the outer side of the battery module;

a terminal insulating layer is disposed on the connection end.

9. The battery pack of claim 8, wherein the connection end is connected to the connection terminal in an L-shape.

10. The battery pack according to any one of claims 1 to 9, wherein an insulating sheet is provided between the pressing sheet and the connection terminal; or,