CN215527860U

CN215527860U - Battery pack assembly

Info

Publication number: CN215527860U
Application number: CN202121674923.7U
Authority: CN
Inventors: 曹峰峰; 王钦; 龚木红
Original assignee: Eve Energy Co Ltd; Hubei Eve Power Co Ltd
Current assignee: Eve Energy Co Ltd; Hubei Eve Power Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-01-14
Anticipated expiration: 2031-07-22

Abstract

The utility model belongs to the technical field of batteries and discloses a battery pack assembly. The battery pack assembly comprises a battery frame, a battery pack and a positioning and locking structure. The battery rack is provided with a cross beam, and a guide piece is arranged on the cross beam; the battery pack comprises a box body, wherein the bottom of the box body is provided with a guide groove, the guide groove can be matched with the guide piece in a rolling manner, and when the battery pack is pushed into or pulled out of the battery frame, the guide groove is matched with the guide piece in a rolling manner, so that the friction force between the bottom of the box body of the battery pack and the battery frame is reduced when the battery pack is pushed and pulled, and the battery pack is more labor-saving, simple, convenient and rapid to load and unload. After the battery pack is pushed into the battery frame, the battery pack is fixedly connected with the battery frame through the positioning locking structure, and the installation stability of the battery pack and the battery frame is improved.

Description

Battery pack assembly

Technical Field

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

Background

With the increasing severity of energy problems and environmental problems and the increasing maturity of key technologies of power batteries, power batteries have been widely used in products such as electric vehicles, electric bicycles, mobile communication terminals, etc. In the production, maintenance and transportation process of battery package, often need install the battery package on the battery frame, perhaps dismantle the battery package from the battery frame, consequently, how to realize the quick dismouting of battery package and have important meaning in this technical field.

In the prior art, the battery pack is mounted and dismounted in a manual push-pull mode, and the battery pack is large in size and heavy in weight, so that when the battery pack is pushed into or pulled out of the battery frame, the bottom of the battery pack and the battery frame are in direct contact friction, large friction resistance needs to be overcome, the manpower requirement is high, and the working efficiency is low; in addition, after the battery pack is pushed into the battery rack, the battery rack cannot fix the battery pack, and the problem that the battery pack is displaced on the battery rack may occur, or even the problem that the battery pack falls off from the battery rack in the transferring process occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery pack assembly, which is used for realizing the quick assembly and disassembly of a battery pack and improving the stability of the installation of the battery pack and a battery frame.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a battery pack assembly comprising:

the battery rack is provided with a cross beam, and a guide piece is arranged on the cross beam;

the battery pack comprises a box body, a guide groove is formed in the bottom of the box body, and the guide groove can be matched with the guide piece in a rolling mode;

and the battery pack can be fixedly connected with the battery rack through the positioning and locking structure.

Preferably, the guide groove is provided to penetrate the bottom of the case.

Preferably, the cross beam comprises a first cross beam and a second cross beam which are arranged in parallel, the guide pieces are arranged on the first cross beam and the second cross beam, two guide grooves are formed in the bottom of the box body, and the two guide grooves correspond to the two groups of guide pieces one to one.

Preferably, the guide is a roller or a ball.

Preferably, the cross beam further comprises a third cross beam perpendicular to the first cross beam, the battery rack further comprises a vertical beam, the vertical beam is spatially and perpendicularly connected with the third cross beam, and the battery pack can be fixedly connected with the third cross beam or the vertical beam through the positioning and locking structure.

Preferably, the box body can be fixedly connected with the battery rack through the positioning and locking structure.

Preferably, the positioning and locking structure comprises a locking block and a connecting block which are connected, the locking block is fixedly arranged on the side wall of the box body, and the connecting block can be fixedly connected with the battery rack.

Preferably, the cross beam further comprises a fourth cross beam parallel to the third cross beam, and a stop block is arranged on the fourth cross beam and can be abutted against the side wall of the box body.

Preferably, the height of the box body is 5% -15% of the height of the battery pack.

Preferably, the side wall of the box body is fixedly provided with a hoisting structure.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the utility model provides a battery pack assembly which comprises a battery frame and a battery pack, wherein a guide piece is arranged on a cross beam of the battery frame, and a guide groove which can be matched with the guide piece in a rolling manner is arranged at the bottom of a box body of the battery pack. When the battery pack is pushed into or pulled out of the battery frame, the guide groove is matched with the guide piece in a rolling mode, so that the friction force between the bottom of the battery pack box body and the battery frame is reduced when the battery pack is pushed and pulled, and the battery pack is more labor-saving, simple, convenient and rapid to assemble and disassemble.

(2) According to the battery pack assembly provided by the utility model, the guide groove is formed in the bottom of the battery pack box body, and when the battery pack is pulled out of the battery frame, the guide groove structure in the bottom of the battery pack box body does not influence the stable placement of the battery pack on the ground or other positions.

(3) After the battery pack is pushed into the battery frame, the battery pack is connected with the battery frame through the positioning locking structure, the battery pack is fixedly connected with the battery frame, and the installation stability of the battery pack and the battery frame is improved.

Drawings

Fig. 1 is a schematic structural view of a battery pack assembly provided in the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is an enlarged view of a portion of FIG. 1 at C;

fig. 5 is a schematic structural view of a battery pack in the battery pack assembly provided by the present invention;

fig. 6 is a schematic structural view of a notch of a battery pack case in the battery pack assembly according to the present invention.

In the figure:

100. a battery holder; 110. a cross beam; 111. a first cross member; 112. a second cross member; 113. a third cross member; 114. a fourth cross member; 115. a guide member; 116. a stopper; 117. mounting holes;

200. a battery pack; 210. a box body; 211. a guide groove; 212. hoisting the structure; 213. a cooling water inlet; 214. a cooling water outlet; 215. a notch; 220. a box cover; 221. maintaining the window;

300. a positioning and locking structure; 310. a locking block; 311. a push-pull groove; 320. connecting blocks; 321. a first connection hole; 322. and a second connection hole.

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 utility model and are not limiting of the utility model. 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, removably 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and 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 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.

The embodiment provides a battery pack assembly, which can effectively improve the mounting stability of a battery pack 200 and a battery rack 100 while realizing the quick assembly and disassembly of the battery pack 200. As shown in fig. 1, the battery pack assembly includes a battery holder 100 and a battery pack 200; the battery rack 100 is provided with a beam 110, and the beam 110 is provided with a guide 115; the battery pack 200 includes a case 210, and a guide groove 211 is formed at the bottom of the case 210, and the guide groove 211 corresponds to the guide 115 such that the guide groove 211 can be roll-fitted with the guide 115. When the battery pack 200 is loaded, the guide grooves 211 and the guide members 115 are aligned, so that the guide members 115 are inserted into the guide grooves 211, the battery pack 200 is pushed into the battery holder 100, and the guide grooves 211 are in rolling fit with the guide members 115 along with the inward movement of the battery pack 200 until the battery pack 200 is pushed to a designated position on the battery holder 100; when the battery pack 200 is unloaded, the battery pack 200 is pulled outward of the battery holder 100, and the guide grooves 211 are in rolling engagement with the guide members 115 as the battery pack 200 moves outward until the battery pack 200 is pulled out of the battery holder 100. Compared with the prior art, the battery pack assembly provided by the embodiment reduces the frictional resistance between the battery pack 200 and the battery rack 100 when the battery pack 200 is assembled and disassembled through the rolling fit of the guide groove 211 and the guide piece 115, so that the assembly and disassembly of the battery pack 200 are more labor-saving, simple, convenient and rapid.

With reference to fig. 1, the battery pack assembly of this embodiment further includes a positioning and locking structure 300, and after the battery pack 200 is pushed into the battery rack 100, the battery pack 200 can be fixedly connected to the battery rack 100 through the positioning and locking structure 300, so as to improve the stability of the installation of the battery pack 200 and the battery rack 100, and avoid the problem that the battery pack 200 is displaced or falls off from the battery rack 100 after being installed on the battery rack 100.

Further, the guide groove 211 is disposed through the bottom of the case 210, so that when the battery pack 200 is mounted on the battery holder 100, the guide groove 211 and the guide 115 can be easily aligned; when the battery pack 200 is detached from the battery holder 100, the guide grooves 211 can be easily pulled out from the guide members 115.

Further, as shown in fig. 1, the cross beam 110 includes a first cross beam 111 and a second cross beam 112 which are arranged in parallel, the first cross beam 111 and the second cross beam 112 are provided with guide pieces 115, the bottom of the box 210 is provided with two guide grooves 211, and the two guide grooves 211 correspond to the two sets of guide pieces 115 one to one, so that the battery pack 200 can slide on the battery rack 100 stably, when the battery pack 200 is pushed and pulled, the acting force received by the battery pack 200 is more uniform, the loading and unloading work of the battery pack 200 is more efficient and labor-saving, and meanwhile, the problem of collision caused by uneven stress in the loading and unloading process of the battery pack 200 can be avoided.

Specifically, the guiding elements 115 may be continuously disposed on the first cross beam 111 and the second cross beam 112, may also be disposed on the first cross beam 111 and the second cross beam 112 at intervals, and may also be disposed at end points of the first cross beam 111 and the second cross beam 112, respectively, and may be produced according to actual application requirements. In this embodiment, as shown in fig. 1, the guiding members 115 are respectively disposed at the end points of the first cross member 111 and the second cross member 112, so that on one hand, the structure of the battery rack 100 can be simplified, on the other hand, the battery pack 200 can be slidably fitted through the guiding grooves 211 and the guiding members 115 from the beginning to the end of the loading and unloading, and after the battery pack 200 is pushed into the battery rack 100, the guiding members 115 support the battery pack 200 at the front and rear end points of the guiding grooves 211, so that the battery pack 200 can be more stably mounted on the battery rack 100.

Further, the guide member 115 is a roller or a ball, in this embodiment, the guide member 115 is a roller, and when the battery pack 200 is pushed into the battery holder 100 to a designated position, the roller is in line contact with the guide groove 211, so that the stability of the guide member 115 in supporting the battery pack 200 is further improved, and the battery pack 200 is more stably mounted on the battery holder 100. Of course, the roller may also be provided with a locking member (not shown), and after the battery pack 200 is pushed into the battery rack 100 to a designated position, the locking member locks the roller, so that the roller does not roll any more, and the stability and reliability of the battery pack 200 mounted on the battery rack 100 are further improved. It is understood that in other embodiments, the guiding element 115 may be a ball or other guiding element with guiding function, and a locking element may be provided to lock the guiding element 115, which may be produced according to actual use requirements.

Further, as shown in fig. 1, the cross beam 110 further includes a third cross beam 113 perpendicular to the first cross beam 111, the battery rack 100 further includes a vertical beam, the vertical beam is spatially and vertically connected to the third cross beam 113, and the battery pack 200 can be fixedly connected to the third cross beam 113 or the vertical beam through the positioning and locking structure 300. In practical application, in order to save space, the battery racks 100 are usually connected and placed, so that the distance between two battery packs 200 mounted on the same layer of two adjacent battery racks 100 is limited, and after the battery packs 200 are pushed into the battery racks 100, the battery packs 200 are fixedly connected with the third cross beam 113 or the vertical beam through the positioning and locking structure 300, so that the operation difficulty of fixedly connecting the battery packs 200 and the battery racks 100 can be effectively reduced, and the assembly efficiency is improved.

Preferably, the case 210 of the battery pack 200 can be fixedly coupled with the battery holder 100 by the positioning and locking structure 300. The case 210 serves as a bearing member of the battery pack 200 and is fixedly connected to the battery holder 100, so that the stability of connection between the battery pack 200 and the battery holder 100 can be improved.

Preferably, as shown in fig. 1 and 3, the positioning and locking structure 300 includes a locking block 310 and a connecting block 320 connected with each other, the locking block 310 is fixedly disposed on a side wall of the box 210, and the connecting block 320 can be fixedly connected with the battery holder 100. It can be understood that the locking block 310 and the connecting block 320 may be an integral structure or a split structure, in this embodiment, the locking block 310 and the connecting block 320 are split structures, so as to ensure that the battery pack 200 can be stably placed on the ground or other positions after being detached from the battery frame 100, and at the same time, the external dimension of the battery pack 200 is effectively reduced. Similarly, the side walls of the locking block 310 and the box body 210 may be an integral structure or a split structure, and in this embodiment, the side walls of the locking block 310 and the box body 210 are designed in an integral casting molding manner, so that the reliability of connection between the locking block 310 and the box body 210 can be improved.

Specifically, as shown in fig. 3, the connecting block 320 is provided with a first connecting hole 321 and a second connecting hole 322 from top to bottom, respectively, the first connecting hole 321 is a threaded hole, the second connecting hole 322 is a through hole, and hole axes of the first connecting hole 321 and the second connecting hole 322 are parallel; the locking block 310 has a through hole, and the hole axis of the through hole is parallel to the hole axis of the first connecting hole 321. As shown in fig. 2, mounting holes 117 are provided on both sides of the third beam 113 (fig. 2 only illustrates one side of the third beam 113, and fig. 2 does not show the other side), and the mounting holes 117 are screw holes. When the battery pack 200 and the battery holder 100 are assembled, the bolt is first inserted into the through hole of the locking block 310, and the part of the bolt that penetrates through the through hole is inserted into the first connecting hole 321, so that the locking block 310 and the connecting block 320 are fixedly connected. Then, the battery pack 200 is pushed into the designated position of the battery holder 100, and finally, another bolt penetrates into the second connecting hole 322 of the connecting block 320, and the part of the bolt penetrating through the second connecting hole 322 penetrates into the mounting hole 117, so that the connecting block 320 and the third beam 113 are fixedly connected, and the battery pack 200 and the battery holder 100 are assembled and fixed. The locking block 310 is connected with the third beam 113 indirectly through the fixed connection between the locking block 310 and the connecting block 320 and the fixed connection between the connecting block 320 and the third beam 113, and the locking block 310 is fixed on the side wall of the box body 210 of the battery pack 200, so that the battery pack 200 is fixedly connected with the battery rack 100.

Preferably, as shown in fig. 3, the locking block 310 is provided with a push-pull groove 311, and when the battery pack 200 is assembled and disassembled, a worker holds the push-pull groove 311 to perform work, so that the assembly and disassembly of the battery pack 200 are more convenient.

Further, as shown in fig. 1, the cross beam 110 further includes a fourth cross beam 114 parallel to the third cross beam 113, and as shown in fig. 4, a stopper 116 is disposed on the fourth cross beam 114, and when the battery pack 200 is pushed into the battery rack 100 to the limit position, the stopper 116 abuts against a side wall of the box 210, so as to limit the installation limit position of the battery pack 200.

Preferably, as shown in fig. 5, the height of the case 210 is only 5% -15% of the overall height of the battery pack 200, for example, the height of the case 210 may be 5%, 6.7%, 10%, 12.5%, 15% of the overall height of the battery pack 200, and the weight of the case 210 is reduced by reducing the height of the case 210. Meanwhile, the battery pack 200 further includes a cover 220, the cover 220 is fastened to the case 210, and an inner cavity of the cover 220 and the case 210 form an installation space for installing a module. When the height of the case 210 is lowered, the height of the case cover 220 inevitably rises, and thus the weight of the case cover 220 increases as the height thereof rises. In the prior art, the battery pack case 210 is made of an aluminum material as a bearing part, and the battery pack case cover 220 is made of a composite material as a non-bearing part, and the materials used for the case 210 and the case cover 220 provided by the embodiment of the utility model are the same as those used in the prior art, so that although the weight of the case cover 220 is increased, the increased weight of the case cover 220 is still smaller than the reduced weight of the case 210 due to the different materials and different densities used for manufacturing the case cover 220 and the case 210, and finally the purposes of reducing the overall weight of the battery pack 200 and improving the energy density of the battery pack 200 are achieved. The composite material for making the box cover 220 is conventional, and thus detailed description thereof is omitted. With continued reference to fig. 5, a maintenance window 221 is provided on the lid 220 to facilitate maintenance of the battery pack 200.

Further, as shown in fig. 3, a hanging structure 212 is fixedly disposed on a side wall of the box 210, so that the battery pack 200 can be conveniently hung when the battery pack 200 is assembled and disassembled. In this embodiment, the hoisting structure 212 and the box 210 are made by an integral casting and pressing process, which effectively improves the safety and reliability of the battery pack 200 during hoisting. It is understood that in other embodiments, the hoisting structure 212 and the box 210 may be fixedly connected by other connection methods, and may be produced according to actual use requirements.

Further, as shown in fig. 5, the battery pack 200 provided in this embodiment is a liquid-cooled battery pack, and the case 210 is provided with a cooling water inlet 213 and a cooling water outlet 214, so that the module is cooled by a water-cooling method, heat is transmitted between liquid and solid, and the heat dissipation efficiency of the battery pack 200 can be effectively improved.

Preferably, as shown in fig. 6, a notch 215 is formed at a top corner of the box 210, and when the connecting block 320 is assembled with the locking block 310, it is convenient for a worker to screw a bolt at the notch 215.

In the battery pack assembly provided by the embodiment, the guide member 115 is arranged on the cross beam 110 of the battery holder 100, the guide groove 211 capable of being matched with the guide member 115 in a rolling manner is arranged at the bottom of the box body 210 of the battery pack 200, and when the battery pack 200 is pushed or pulled out of the battery holder 100, the guide groove 211 is matched with the guide member 115 in a rolling manner along with the pushing or pulling of the battery pack 200, so that the friction resistance between the bottom of the box body 210 of the battery pack 200 and the battery holder 100 is reduced when the battery pack 200 is pushed or pulled, and the battery pack 200 is assembled and disassembled more easily, conveniently and quickly. After the battery pack 200 is pushed into the battery rack 100, the battery pack 200 is fixedly connected with the battery rack 100 through the positioning and locking structure 300, so that the stability of the installation of the battery pack 200 and the battery rack 100 is improved.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor 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 assembly, comprising:

the battery rack (100) is provided with a cross beam (110), and a guide piece (115) is arranged on the cross beam (110);

the battery pack (200) comprises a box body (210), a guide groove (211) is formed in the bottom of the box body (210), and the guide groove (211) can be in rolling fit with the guide piece (115);

the battery pack (200) can be fixedly connected with the battery frame (100) through the positioning and locking structure (300).

2. The battery pack assembly according to claim 1, wherein the guide groove (211) is provided through the bottom of the case (210).

3. The battery pack assembly according to claim 2, wherein the cross beam (110) comprises a first cross beam (111) and a second cross beam (112) which are arranged in parallel, the guide members (115) are arranged on the first cross beam (111) and the second cross beam (112), two guide grooves (211) are arranged at the bottom of the box body (210), and the two guide grooves (211) correspond to the two sets of guide members (115) one by one.

4. A battery pack assembly according to any of claims 1-3, wherein the guide (115) is a roller or a ball.

5. The battery pack assembly according to claim 3, wherein the cross beam (110) further comprises a third cross beam (113) perpendicular to the first cross beam (111), the battery rack (100) further comprises a vertical beam spatially and vertically connected to the third cross beam (113), and the battery pack (200) can be fixedly connected to the third cross beam (113) or the vertical beam through the positioning and locking structure (300).

6. The battery pack assembly of claim 1, wherein the case (210) is fixedly connectable to the battery holder (100) by the positioning and locking structure (300).

7. The battery pack assembly of claim 6, wherein the positioning and locking structure (300) comprises a locking block (310) and a connecting block (320) which are connected, the locking block (310) is fixedly arranged on the side wall of the box body (210), and the connecting block (320) can be fixedly connected with the battery frame (100).

8. The battery pack assembly according to claim 5, wherein the cross member (110) further comprises a fourth cross member (114) parallel to the third cross member (113), the fourth cross member (114) being provided with a stopper (116), the stopper (116) being capable of abutting against a side wall of the case (210).

9. A battery pack assembly according to any of claims 1-3, wherein the height of the case (210) is 5-15% of the height of the battery pack (200).

10. The battery pack assembly of any one of claims 1-3, wherein a lifting structure (212) is fixedly arranged on a side wall of the box body (210).