CN217035822U

CN217035822U - Blade battery pack

Info

Publication number: CN217035822U
Application number: CN202123453166.3U
Authority: CN
Inventors: 李刚; 杨奇胜; 曾应平; 陈中华
Original assignee: Dongguan Wotaitong New Energy Co ltd
Current assignee: Dongguan Langtaitong Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-22
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a blade battery pack which comprises a box body and a battery module arranged in the box body; the battery module comprises a plurality of stacked electric core groups and two fixing plates arranged on the outermost sides of the electric core groups; the two fixing plates fix the plurality of electric core groups through the penetrating rods; the same sides of the two fixing plates are connected through a bottom plate; the bottom plate is attached to the surface of the electric core group, and one side of the bottom plate, which is far away from the electric core group, is fixedly connected with the box body; one side of the two fixing plates, which is far away from the bottom plate, is connected through a top plate, and the top plate is attached to the surface of one side of the cell group, which is far away from the bottom plate. According to the utility model, the two fixing plates, the bottom plate and the top plate are used for coating and fixing the plurality of electric core groups together, so that the fixing structure is simpler on the premise of ensuring the fixing strength, the volume of the whole battery pack is effectively reduced, and the energy density of the battery pack is correspondingly improved.

Description

Blade battery pack

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of lithium batteries, in particular to a blade battery pack.

[ background of the utility model ]

With the continuous development of lithium battery technology, lithium battery modules have also been applied to many industries, such as electric vehicles, robots, and the like. The common lithium battery module is formed by correspondingly connecting cylindrical batteries or square batteries in series and parallel according to voltage and current requirements and then fixedly connecting the cylindrical batteries or the square batteries. However, the fixing structure of such a battery module is complicated, resulting in a large overall volume of the battery pack.

In view of the above, it is desirable to provide a blade battery pack to overcome the above-mentioned drawbacks.

[ Utility model ] content

The utility model aims to provide a blade battery pack, which aims to solve the problem that the whole size of the conventional battery pack is large, so that the energy density of the battery pack is improved.

In order to achieve the purpose, the utility model provides a blade battery pack, which comprises a box body and a battery module arranged in the box body; the battery module comprises a plurality of stacked electric core groups and two fixing plates arranged on the outermost sides of the electric core groups; the two fixing plates fix the electric core groups through penetrating rods; the same sides of the two fixing plates are connected through a bottom plate; the bottom plate is attached to the surface of the electric core group, and one side of the bottom plate, which is far away from the electric core group, is fixedly connected with the box body; one sides, far away from the bottom plate, of the two fixing plates are connected through a top plate, and the top plate is attached to the surface, far away from one side of the bottom plate, of the electric core group.

In a preferred embodiment, the battery module has a rectangular parallelepiped shape, and the bus bars are provided on both surfaces except for the bottom plate, the top plate, and the two fixing plates; the two bus bars are used for electrically connecting the positive pole and the negative pole of the electric core group respectively.

In a preferred embodiment, a battery management module is arranged on one side of the top plate, which is far away from the electric core group; one of the bus bars passes through the battery management module through a lead to form a total positive electrode of the battery module, and the other bus bar passes through a lead to form a total negative electrode of the battery module.

In a preferred embodiment, the total positive electrode and the total negative electrode are fixed at intervals through a connecting piece to form a connecting terminal; the wiring terminal is fixed on the box body.

In a preferred embodiment, each bus bar is provided with an acquisition module, and the acquisition modules are electrically connected with the battery management module.

In a preferred embodiment, the fixing plate is provided with a first flange perpendicular to the surface of the fixing plate, the edge of the top plate is bent in a direction close to the fixing plate to form a second flange, and the first flange and the second flange are connected through a bolt so as to detachably fix the top plate on the fixing plate.

In a preferred embodiment, the case includes a lower case and an upper case; the lower box body is provided with an accommodating groove, and the battery module is arranged in the accommodating groove; one end of the upper box body is inwards sunken to form an accommodating groove, and the wiring terminal is arranged in the accommodating groove.

In a preferred embodiment, the upper box body is provided with at least one fixing groove, and the bottom of the fixing groove is provided with a handle.

In a preferred embodiment, the handle is rotatably arranged at the bottom of the fixing groove through a hinge; when the handle is attached to the bottom of the fixing groove, the handle is completely contained in the fixing groove.

According to the blade battery pack provided by the utility model, the plurality of electric core groups are coated and fixed through the two fixing plates, the bottom plate and the top plate, so that the fixing structure is simpler on the premise of ensuring the fixing strength, the volume of the whole battery pack is effectively reduced, and the energy density of the battery pack is correspondingly improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a perspective view of a blade battery pack provided by the present invention;

fig. 2 is a perspective view of the blade battery pack shown in fig. 1 with the case removed.

Reference numbers in the figures: 100. a blade battery pack; 10. a box body; 11. a lower box body; 12. an upper box body; 13. accommodating a tank; 14. fixing grooves; 15. a handle; 16. a hinge; 20. a battery module; 21. the electric core group; 22. a fixing plate; 221. a first flanging; 23. penetrating a rod; 24. a base plate; 25. a top plate; 251. second flanging; 26. a confluence sheet; 27. a bolt; 28. a battery management module; 31. a total positive electrode; 32. a total negative electrode; 33. a connecting member; 34. a wiring terminal; 35. and a collection module.

[ detailed description ] A

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

In an embodiment of the present invention, a blade battery pack 100 is provided for reducing the volume of the entire battery pack while ensuring the fixing strength of the battery modules.

As shown in fig. 1 and 2, the blade battery pack 100 includes a case 10 and a battery module 20 disposed in the case 10.

Specifically, the casing 10 includes a lower casing 11 and an upper casing 12. The lower case 11 is provided with a receiving groove (not shown) in which the battery module 20 is disposed. The upper case 12 is used to close the receiving groove, thereby preventing the battery module 20 from being separated from the lower case 11. Wherein, one end of the upper box body 12 is sunken inwards to form a containing groove 13. That is, a step-like structure is formed between the upper case 12 and the lower case 11, and the recessed portion of the step-like structure is the receiving groove 13.

The upper case 12 is provided with at least one fixing groove 14, and the fixing groove 14 is formed by sinking one end of the upper case 12 far away from the lower case 11 in a direction close to the receiving groove. In the present embodiment, the number of the fixing slots 14 is two and the fixing slots are spaced apart. Wherein, the bottom of the fixing groove 14 is provided with a handle 15. The handle 15 facilitates the lifting of the entire box 10 by the operator. Further, the handle 15 is rotatably provided at the bottom of the fixing groove 14 by a hinge 16. That is, the handle 15 may be attached to the bottom of the fixing groove 14, or may be rotated to be perpendicular to the bottom of the fixing groove 14, thereby facilitating lifting by the worker. When the handle 15 is attached to the bottom of the fixing groove 14, the handle 15 is completely accommodated in the fixing groove 14, so that inconvenience that the blade battery pack 100 is installed in other devices due to a protruding structure is avoided.

In the embodiment of the present invention, the battery module 20 includes a plurality of stacked electric core packs 21 and two fixing plates 22 disposed at the outermost sides of the plurality of electric core packs 21. In the present embodiment, the electric core groups 21 are formed in a sheet-like structure, and a plurality of electric core groups 21 are stacked to form a structure like a rectangular parallelepiped. The two fixing plates 22 fix the plurality of electric core groups 21 through the penetrating rods 23, that is, the two fixing plates 22 are respectively attached and fixed on two opposite sides of the stacked structure of the electric core groups 21.

Specifically, the same sides of the two fixing plates 22 are connected by a bottom plate 24. The bottom plate 24 is attached to the surface of the electric core assembly 21, and one side of the bottom plate 24 away from the electric core assembly 21 is fixedly connected with the box body 10, so that the electric core assembly 21 is fixed in the box body 10. The sides of the two fixing plates 22 far away from the bottom plate 24 are connected through a top plate 25, and the top plate 25 is attached to the surface of the side of the electric core group 21 far away from the bottom plate 24. Therefore, the bottom plate 24 and the top plate 25 are respectively disposed on two opposite sides of the stacked structure of the electric core assembly 21, so that the bottom plate 24, the top plate 25 and the two fixing plates 22 are respectively attached to four faces of the stacked structure of the rectangular electric core assembly 21. Further, the battery module 20 has a rectangular parallelepiped shape, and the bus bars 26 are provided on both surfaces except the bottom plate 24, the top plate 25, and the two fixing plates 22. The two bus bars 26 are used for electrically connecting the positive electrode and the negative electrode of the electric core assembly 21 respectively.

Further, a first flange 221 is disposed on the fixing plate 22 and perpendicular to the surface of the fixing plate 22. The edge of the top plate 25 is bent in a direction close to the fixing plate 22 to form a second flange 251. The first flange 221 is attached to the second flange 251, and then is connected by the bolt 27 to detachably fix the top plate 25 on the fixing plate 22, thereby facilitating the maintenance and replacement of the electric core assembly 21.

Further, in one embodiment, a battery management module 28 is disposed on a side of the top plate 25 away from the electric core pack 21. One of the bus bars 26 forms a total positive electrode 31 of the battery module 20 after passing through the battery management module 28 through a conductive wire, and the other bus bar 26 forms a total negative electrode 32 of the battery module 20 through a conductive wire. Therefore, the on-off of the lead of the total positive electrode 31 (or the total negative electrode 32) can be controlled by the battery management module 28 to control the on-off of the whole discharge circuit.

Wherein, the total anode 31 and the total cathode 32 are fixed at intervals by a connecting piece 33 to form a terminal 34. The terminal 34 is fixed to the housing 10, and specifically, the terminal 34 is disposed in the receiving groove 13. The connection terminal 34 is used to electrically connect with an external power interface, thereby outputting the amount of power of the battery module 20.

Further, each bus bar 26 is provided with an acquisition module 35, and the acquisition module 35 is electrically connected with the battery management module 28, so that the voltage and current states of the electric core pack 21 can be acquired through the acquisition module 35 and then collected into the battery management module 28 for processing.

In summary, according to the blade battery pack 100 provided by the utility model, the two fixing plates 22, the bottom plate 24 and the top plate 25 jointly cover and fix the plurality of electric core groups 21, so that the fixing structure is simpler on the premise of ensuring the fixing strength, the volume of the whole blade battery pack 100 is effectively reduced, and the energy density of the blade battery pack 100 is correspondingly improved.

The utility model is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the utility model is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. A blade battery pack is characterized by comprising a box body and a battery module arranged in the box body; the battery module comprises a plurality of stacked electric core groups and two fixing plates arranged on the outermost sides of the electric core groups; the two fixing plates fix the electric core groups through penetrating rods; the same sides of the two fixing plates are connected through a bottom plate; the bottom plate is attached to the surface of the electric core group, and one side of the bottom plate, which is far away from the electric core group, is fixedly connected with the box body; one side of the two fixing plates, which is far away from the bottom plate, is connected through a top plate, and the top plate is attached to the surface of one side of the electric core group, which is far away from the bottom plate.

2. The blade battery pack according to claim 1, wherein the battery module has a rectangular parallelepiped shape, and a bus bar is provided on both surfaces excluding the bottom plate, the top plate, and the two fixing plates; the two bus bars are used for electrically connecting the positive pole and the negative pole of the electric core group respectively.

3. The blade battery pack of claim 2, wherein a battery management module is disposed on a side of the top plate away from the battery pack; one of the bus bars passes through the battery management module through a lead to form a total positive electrode of the battery module, and the other bus bar passes through a lead to form a total negative electrode of the battery module.

4. The blade battery pack of claim 3, wherein the total positive electrode and the total negative electrode are fixed at intervals by a connecting piece to form a terminal; the wiring terminal is fixed on the box body.

5. The blade battery pack of claim 4, wherein each bus bar is provided with an acquisition module, and the acquisition modules are electrically connected with the battery management module.

6. The blade battery pack of claim 1, wherein the fixing plate is provided with a first flange perpendicular to the surface of the fixing plate, the edge of the top plate is bent in a direction close to the fixing plate to form a second flange, and the first flange and the second flange are connected through a bolt so as to detachably fix the top plate on the fixing plate.

7. The blade battery pack of claim 4, wherein the case includes a lower case and an upper case; the lower box body is provided with an accommodating groove, and the battery module is arranged in the accommodating groove; one end of the upper box body is inwards sunken to form an accommodating groove, and the wiring terminal is arranged in the accommodating groove.

8. The blade battery pack of claim 7, wherein the upper case is provided with at least one fixing groove, and a handle is provided at the bottom of the fixing groove.

9. The blade battery pack of claim 8, wherein the handle is rotatably disposed at the bottom of the fixing groove through a hinge; when the handle is attached to the bottom of the fixing groove, the handle is completely contained in the fixing groove.