CN218005101U

CN218005101U - Battery pack

Info

Publication number: CN218005101U
Application number: CN202221741173.5U
Authority: CN
Inventors: 唐显荣
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-12-09
Anticipated expiration: 2032-07-06

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery pack, which comprises a battery shell, a battery module and a fixing bolt; the battery shell is provided with a plurality of through holes; the battery module comprises an electric core assembly and an electric core support, the electric core assembly is fixedly connected with the electric core support, the electric core support comprises a support body and a plurality of positioning columns, the plurality of positioning columns are fixedly connected with the support body, and the plurality of positioning columns correspond to the plurality of through holes one by one; each group of corresponding through holes and positioning columns are inserted with a fixing bolt. The battery pack is convenient for fixing the battery module and the battery shell, and can ensure that the battery module and the battery shell are kept in firm rigid connection when a vibration test and a drop test are carried out.

Description

Battery pack

Technical Field

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

Background

In the field of battery installation of two-wheeled electric vehicles, a lithium battery module of the two-wheeled electric vehicle generally utilizes a metal pressing plate to press and fix the battery module, and then the metal pressing plate and a rib lock inside a battery shell are fixed by screws. The fixing mode can meet the installation of the battery module and the battery shell with common sizes. The fixing strength and the stability of being connected between battery module and the battery shell when doing the shock test and drop test can not be guaranteed under the great battery module of length and width dimension and battery shell's installation condition.

Therefore, a battery pack is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery package, this battery package be convenient for battery module and battery case's fixed, can guarantee when doing vibration test and drop test, battery module and battery case keep firm rigid connection.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery pack, comprising: the battery comprises a battery shell, a battery module and a fixing bolt; the battery shell is provided with a plurality of through holes; the battery module comprises an electric core assembly and an electric core support, wherein the electric core assembly is fixedly connected with the electric core support, the electric core support comprises a support body and a plurality of positioning columns, the plurality of positioning columns are fixedly connected with the support body, and the plurality of positioning columns are in one-to-one correspondence to the plurality of through holes; and one fixing bolt is inserted into each group of corresponding through holes and positioning columns.

Optionally, the fixing bolt is provided with an external thread, the positioning column is provided with a screw hole, and the fixing bolt is screwed in the screw hole.

Optionally, the battery cell support further includes a plurality of reinforcing blocks, each of the positioning columns corresponds to a plurality of the reinforcing blocks, and the plurality of reinforcing blocks are attached to the positioning columns along the circumferential direction and are fixedly connected to the support body.

Optionally, the cross-section along the direction of height of the reinforcing block is trapezoidal, the bottom of the reinforcing block is fixedly connected to the bracket body, and the bottom size of the reinforcing block is larger than the top size of the reinforcing block.

Optionally, the battery cell support further includes a support structure, the support structure is fixedly connected to the support body, the height of the support structure is equal to the height of the positioning column, and the support structure abuts against the battery case.

Optionally, the battery case includes a first side cover, a second side cover, a third side cover and a fourth side cover, the first side cover and the second side cover are disposed oppositely, the third side cover and the fourth side cover are disposed oppositely, the first side cover, the second side cover, the third side cover and the fourth side cover are enclosed to form an accommodating space, and the battery module is mounted in the accommodating space and fixedly connected to the first side cover and the second side cover.

Optionally, the first side cover is provided with a plurality of first through holes in a rectangular array, the second side cover is provided with a plurality of second through holes in a rectangular array, and each first through hole and each second through hole correspond to one positioning column.

Optionally, the first side cover is provided with four first through holes, and the second side cover is provided with four second through holes.

Optionally, the battery case further includes a top cover that covers the upper opening of the accommodating space.

Optionally, the battery housing further comprises a portable mechanism mounted to the top cover configured to facilitate access to the battery pack.

The utility model has the advantages that:

the utility model provides a battery package sets up battery case and is used for protecting inside battery module. The battery module comprises a support body and a plurality of positioning columns, the support body is used for installing and supporting the battery module, the positioning columns can correspond to a plurality of through holes formed in the battery shell one by one, the fixing bolts are used for connecting the positioning columns and the battery shell, the connection strength and reliability of the battery shell and the battery cell support can be improved, and the battery module can be firmly and rigidly connected with the battery shell when a vibration test and a drop test are carried out.

Drawings

Fig. 1 is a schematic diagram of the front and upper structure of a battery case provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a rear portion and a lower portion of a battery case according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a battery pack provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

fig. 5 is an enlarged view of the structure labeled a in fig. 4.

In the figure:

100. a battery case; 110. a first side cover; 111. a first through hole; 120. a second side cover; 121. a second through hole; 130. a third side cover; 140. a top cover; 150. a portable mechanism; 160. a bottom cover;

200. a battery module; 210. an electrical core assembly; 220. a battery cell bracket; 221. a stent body; 222. a positioning column; 223. a reinforcing block; 224. a support structure;

300. and (6) fixing the bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to 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 under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

Fig. 1 shows the front portion and the upper portion of the battery case provided by the embodiment of the present invention schematically show, fig. 2 shows the rear portion and the lower portion of the battery case provided by the embodiment of the present invention schematically show, fig. 3 shows the cross-sectional view of the battery pack provided by the embodiment of the present invention, and fig. 4 shows the structure of the battery module provided by the embodiment of the present invention schematically show. Referring to fig. 1 to 4, the battery pack provided in this embodiment includes a battery case 100, a battery module 200, and a fixing bolt 300. The battery module 200 is mounted in the battery case 100, the battery case 100 can protect the battery module 200, the fixing pins 300 are used to connect the battery module 200 and the battery case 100, and the connection strength and reliability of the battery case 100 and the battery module 200 can be improved.

Specifically, the battery housing 100 is provided with a plurality of through holes, the battery module 200 includes a cell assembly 210 and a cell support 220, the cell assembly 210 is fixedly connected to the cell support 220, the cell support 220 includes a support body 221 and a plurality of positioning posts 222, the plurality of positioning posts 222 are fixedly connected to the support body 221, and the plurality of positioning posts 222 are in one-to-one correspondence with the plurality of through holes; the number of the fixing bolts 300 is plural, and one fixing bolt 300 is inserted into each corresponding through hole and the positioning column 222. The positioning post 222 can provide a mounting position for the fixing bolt 300, and the length of the positioning post 222 is equivalent to that of the fixing bolt 300, so that the fixing bolt 300 can be securely mounted in the positioning post 200.

More specifically, the battery case 100 includes a first side cover 110, a second side cover 120, a third side cover 130 and a fourth side cover, the first side cover 110 and the second side cover 120 are disposed oppositely, the third side cover 130 and the fourth side cover are disposed oppositely, the first side cover 110, the second side cover 120, the third side cover 130 and the fourth side cover are enclosed to form an accommodating space, and the battery module 200 is mounted in the accommodating space and fixedly connected to the first side cover 110 and the second side cover 120. This battery case 100 is the cuboid structure, and the shape matches in the external shape of battery module 200, and the installation of the battery module 200 of being convenient for in battery case 100 is fixed, prevents that the too big rigid connection reliability that leads to between battery module 200 and the battery case 100 in clearance between battery case 100 and the battery module 200 is not enough.

More specifically, the battery case 100 further includes a top cover 140, and the top cover 140 covers the upper opening of the accommodating space. Meanwhile, the battery case 100 further includes a bottom cover 160, the bottom cover 160 covers the lower opening of the accommodating space, and the first side cover 110, the second side cover 120, the third side cover 130, the fourth side cover, the top cover 140 and the bottom cover 160 are commonly enclosed to form a closed case structure, so as to protect the battery module 200 installed in the battery case 100.

More specifically, the battery case 100 further includes a portable mechanism 150, and the portable mechanism 150 is mounted to the top cover 140. As shown in fig. 1, the portable device 150 provided in this embodiment may be a handle in the prior art, and the handle includes a connecting sheet and a handle, the connecting sheet is fixedly connected to the top cover 140 by using a connecting component such as a screw, and the handle is shaped like a square and is inserted into a preset hole on the connecting sheet. The handle can be rotated to fit the top cover 140 and also rotated to open to a direction perpendicular to the top cover 140, and is configured to facilitate a person to take the battery pack.

With reference to fig. 1 to 4, the first side cover 110 has a plurality of first through holes 111 arranged in a rectangular array, the second side cover 120 has a plurality of second through holes 121 arranged in a rectangular array, and each of the first through holes 111 and each of the second through holes 121 corresponds to one of the positioning posts 222. In the present embodiment, the first side cover 110 has four first through holes 111, and the second side cover 120 has four second through holes 121. Each first through hole 111 and each positioning column 222 form a connection point; similarly, each second through hole 121 and each positioning post 222 form a connection point. Through the rectangular array of each tie point, can realize the evenly distributed of battery case 100 and battery module 200 tie point, make every tie point atress even, guarantee that battery module 200 firmly installs in battery case 100.

With continued reference to fig. 1-3, the fixing bolt 300 is provided with external threads, the positioning post 222 is provided with a screw hole, and the fixing bolt 300 is screwed into the screw hole. The securing pin 300 may be selected from the M4 grub screws of the prior art. After the M4 flat head screw is screwed into the screw hole of the positioning post 222, the head of the M4 flat head screw can be embedded into the first through hole 111 or the second through hole 121, so that the surface smoothness of the first side cover 110 and the second side cover 120 is ensured, the appearance attractiveness of the battery pack is improved, and meanwhile, the problem that the battery pack is hooked by a protruding structure is prevented.

With continued reference to fig. 4, the cell support 220 further includes a support structure 224, the support structure 224 is fixedly connected to the support body 221, the height of the support structure 224 is equal to the height of the positioning post 222, and the support structure 224 abuts against the battery casing 100. The plurality of supporting structures 224 are distributed at intervals along the height direction of the battery module 200 and are fixedly connected to the bracket body 221. Each of the support structures 224 includes a first support plate and two second support plates, the two second support plates being parallel to each other, being parallel to the width direction of the battery module 200, being spaced apart in the height direction of the battery module 200, the first support plate being parallel to the height direction of the battery module 200, being disposed to cross the two second support plates. The plurality of support structures 224 can be respectively clamped between the bracket body 221 and the first side cover 110 and between the bracket body 221 and the second side cover 120 to form a support, so that the problem of middle collapse of the first side cover 110 and the second side cover 120 due to an overlarge area is prevented.

Fig. 5 shows an enlarged view of the structure labeled a in fig. 4. Referring to fig. 4 and 5, the cell support 220 further includes a plurality of reinforcing blocks 223, each positioning pillar 222 corresponds to the plurality of reinforcing blocks 223, and the plurality of reinforcing blocks 223 are attached to the positioning pillar 222 along the circumferential direction and are fixedly connected to the support body 221. The reinforcing block 223 is provided as an auxiliary structure for connecting the positioning column 222 and the bracket body 221, so that the contact area between the positioning column 222 and the bracket body 221 can be increased, and the connection stability can be improved.

Specifically, the cross section of the reinforcing block 223 along the height direction thereof is trapezoidal, the bottom of the reinforcing block 223 is fixedly connected to the bracket body 221, and the bottom size of the reinforcing block 223 is larger than the top size of the reinforcing block 223. The arrangement can further enlarge the contact area between the positioning column 222 and the bracket body 221, and enhance the structural reliability and stability of the positioning column 222.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery pack, comprising:

the battery shell (100), the battery shell (100) is provided with a plurality of through holes;

the battery module (200) comprises a cell assembly (210) and a cell support (220), the cell assembly (210) is fixedly connected to the cell support (220), the cell support (220) comprises a support body (221) and a plurality of positioning columns (222), the positioning columns (222) are fixedly connected to the support body (221), and the positioning columns (222) correspond to the through holes one by one;

and each group of corresponding through holes and positioning columns (222) are inserted with one fixing bolt (300).

2. The battery pack of claim 1, wherein the fixing bolt (300) is provided with an external thread, the positioning post (222) is provided with a screw hole, and the fixing bolt (300) is screwed in the screw hole.

3. The battery pack according to claim 2, wherein the cell holder (220) further comprises a plurality of reinforcing blocks (223), each of the positioning pillars (222) corresponds to a plurality of the reinforcing blocks (223), and a plurality of the reinforcing blocks (223) are attached to the positioning pillars (222) along the circumferential direction and are fixedly connected to the holder body (221).

4. The battery pack according to claim 3, wherein the reinforcing block (223) has a trapezoidal cross section in the height direction thereof, the bottom of the reinforcing block (223) is fixedly connected to the bracket body (221), and the bottom dimension of the reinforcing block (223) is larger than the top dimension of the reinforcing block (223).

5. The battery pack according to any of claims 1 to 4, wherein the cell holder (220) further comprises a support structure (224), the support structure (224) is fixedly connected to the holder body (221), the height of the support structure (224) is equal to the height of the positioning posts (222), and the support structure (224) abuts against the battery housing (100).

6. The battery pack according to claim 1, wherein the battery housing (100) comprises a first side cover (110), a second side cover (120), a third side cover (130), and a fourth side cover, the first side cover (110) and the second side cover (120) are disposed opposite to each other, the third side cover (130) and the fourth side cover are disposed opposite to each other, the first side cover (110), the second side cover (120), the third side cover (130), and the fourth side cover enclose a receiving space, and the battery module (200) is mounted in the receiving space and fixedly connected to the first side cover (110) and the second side cover (120).

7. The battery pack according to claim 6, wherein the first side cover (110) has a plurality of first through holes (111) in a rectangular array, the second side cover (120) has a plurality of second through holes (121) in a rectangular array, and each of the first through holes (111) and each of the second through holes (121) corresponds to one of the positioning posts (222).

8. The battery pack according to claim 7, wherein the first side cover (110) is provided with four first through holes (111), and the second side cover (120) is provided with four second through holes (121).

9. The battery pack according to claim 6, wherein the battery case (100) further comprises a top cover (140), the top cover (140) covering an upper opening of the receiving space.

10. The battery pack of claim 9, wherein the battery housing (100) further comprises a carrying mechanism (150), the carrying mechanism (150) being mounted to the top cover (140) and configured to facilitate access to the battery pack.