CN218300012U

CN218300012U - Battery module and battery pack

Info

Publication number: CN218300012U
Application number: CN202222385929.3U
Authority: CN
Inventors: 王晓宾; 徐博豪; 汤杰
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-01-13
Anticipated expiration: 2032-09-08

Abstract

The utility model belongs to the technical field of the battery, a battery module and battery package are disclosed. The battery module includes the casing, be provided with electric core in the casing, the casing includes the upper cover plate, apron and a plurality of curb plate down, at least part curb plate is connected with upper cover plate and apron joint down, so that the upper cover plate, apron and a plurality of curb plate enclose to establish and form the casing down, thereby the structure of battery module has been simplified, the equipment and the disassembly of battery module have been made things convenient for, and be provided with the strengthening rib under on the apron, form the cooling bath between two adjacent strengthening ribs, the cooling bath is located apron one side that deviates from electric core down, can cool off the electric core in the battery module, the structural strength of battery module casing has still been improved to this strengthening rib, this battery module shock resistance and anti extrusion can the reinforce, it is not fragile to have guaranteed that electric core in the casing.

Description

Battery module and battery pack

Technical Field

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

Background

The power battery modules in the current market mainly have the following two grouping modes, wherein the first mode adopts aluminum plate side seam welding, the weight of the modules can be increased by adopting the mode, so that the energy density of the modules is reduced, and the grouping size of the modules is limited, so that the welding is not convenient to control; the module is tied up through the packing area to packing is glued and is bonded with the box in module bottom between electric core is adopted to the second kind of mode, though this kind of mode is firm in groups, can not change the module during the maintenance, can only change the battery package, and cost of maintenance is great. In addition, the module frame structural strength that two kinds of above modes were built in groups is lower, and shock resistance and anti extrusion capacity are weak, and inside electric core easily damages.

Therefore, a battery module and a battery pack are needed to solve the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module can simplify the battery module structure, improves the intensity of battery module casing, guarantees that electric core is safer.

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

the battery module comprises a shell, wherein an electric core is arranged in the shell, the shell comprises an upper cover plate, a lower cover plate and a plurality of side plates, at least part of the side plates are connected with the upper cover plate and the lower cover plate in a clamping mode, so that the upper cover plate, the lower cover plate and the side plates are arranged in a surrounding mode to form the shell, a plurality of reinforcing ribs are arranged on the length direction of the lower cover plate, two adjacent reinforcing ribs are arranged between the reinforcing ribs, and the cooling grooves are located on one side of the electric core, which is deviated from the lower cover plate.

Optionally, the curb plate includes two relative first curb plates that set up, every all be provided with a plurality of buckle subassemblies on the inner wall of first curb plate, the upper cover plate with the apron is close to down the one end of first curb plate all is provided with a plurality of mounts, buckle subassembly with the mount one-to-one, buckle subassembly's joint end with correspond the mount joint is connected.

Optionally, be provided with the joint hole on the mount, buckle subassembly includes first card ear and second card ear, first card ear with be provided with the deformation space between the second card ear, first card ear with the second card ear is all worn to locate the joint hole with the joint in on the mount.

Optionally, first card ear includes first spacing portion and first bellying, first spacing portion one end with first curb plate wall connection, the other end with first bellying is connected, the second card ear includes spacing portion of second and second bellying, spacing portion one end of second with first curb plate wall connection, the other end with the second bellying is connected, buckle subassembly and mount assembly back, first spacing portion with spacing portion of second all is located in the joint hole, first bellying with the equal joint of second bellying in on the mount.

Optionally, the edge of the first side plate is vertically provided with a first flanging and a second flanging, the first flanging is connected with the upper cover plate in an adhesive manner, and the second flanging is connected with the lower cover plate in an adhesive manner.

Optionally, the side plate further includes two second side plates disposed opposite to each other, and each of the second side plates is welded to the upper cover plate and the lower cover plate.

Another object of the utility model is to provide a battery package can further reduce the battery package volume, improves the intensity of battery package, improves the cooling effect of liquid cooling subassembly to the battery module simultaneously, guarantees that the battery module normally works.

the battery pack comprises the battery modules, and further comprises a box body and a liquid cooling assembly, wherein the battery modules are arranged in the box body, the battery modules are adjacent to each other and are electrically connected, the output end of the liquid cooling assembly is arranged in the cooling tank, and the liquid cooling assembly is arranged to cool the battery modules.

Optionally, the liquid cooling assembly comprises a liquid inlet pipe, a liquid cooling plate and a liquid outlet pipe, the liquid cooling plate is arranged in the cooling tank, and the liquid inlet pipe and the liquid outlet pipe are communicated with the liquid cooling plate.

Optionally, the liquid cooling assembly further comprises foam, the foam being disposed between the tank and the liquid cooling plate, the foam being configured to support the liquid cooling plate.

Optionally, the liquid cooling assembly further comprises a heat conducting glue, and the heat conducting glue is arranged between the liquid cooling plate and the bottom of the cooling tank.

Has the advantages that:

the utility model provides a battery module includes the casing, be provided with electric core in the casing, the casing includes the upper cover plate, apron and a plurality of curb plate down, at least part curb plate is connected with upper cover plate and lower apron joint, so that the upper cover plate, apron and a plurality of curb plate enclose and establish the formation casing down, the structure of battery module has been simplified, the equipment and the disassembling of battery module have been made things convenient for, and be provided with the strengthening rib under on the apron, form the cooling bath between two adjacent strengthening ribs, the cooling bath is located one side that the apron deviates from electric core down, can cool off the electric core in the battery module, the structural strength of battery module casing has still been improved to this strengthening rib, this battery module shock resistance and anti extrusion can the reinforce, it is not fragile to have guaranteed electric core in the casing.

The utility model provides a battery pack through set up cooling assembly in the box, sets up cooling assembly's output in the cooling bath of apron under the battery module, has improved the cooling effect of liquid cooling assembly to the battery module, and cooling assembly can cool off the battery module simultaneously, prevents that the battery module from damaging because of the high temperature, has improved the life of battery module and battery pack.

Drawings

Fig. 1 is an exploded view of a battery module according to 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 a schematic structural diagram of a housing provided by the present invention;

FIG. 5 is a schematic view of the structure at C in FIG. 4;

fig. 6 is an exploded view of a battery pack provided by the present invention.

In the figure:

100. a housing; 110. an upper cover plate; 120. a lower cover plate; 121. reinforcing ribs; 122. a cooling tank; 123. a fixed mount; 1231. a clamping hole; 124. flanging the lower cover plate; 1241. a first avoidance slot; 130. a first side plate; 131. a first flanging; 132. second flanging; 140. a second side plate;

200. an electric core;

300. a buckle assembly; 310. a first engaging lug; 311. a first limiting part; 312. a first boss; 313. a first guide slope; 320. a second engaging lug; 321. a second limiting part; 322. a second boss; 323. a second guide slope;

400. a liquid cooling assembly; 410. a liquid inlet pipe; 420. a liquid-cooled plate; 430. a liquid outlet pipe; 440. soaking cotton; 450. heat conducting glue;

500. and (4) a box body.

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", "left", "right", and the like are used in the orientation or positional relationship 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 specific orientation, be constructed in a specific orientation, and be operated, 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 module, as shown in fig. 1, fig. 2 and fig. 3, the battery module includes a housing 100, a plurality of cells 200 stacked in sequence are provided in the housing 100, two adjacent cells 200 are electrically connected to each other, the housing 100 includes an upper cover plate 110, a lower cover plate 120 and a plurality of side plates, at least a part of the side plates are connected to the upper cover plate 110 and the lower cover plate 120 in a clamping manner, so that the upper cover plate 110, the lower cover plate 120 and the side plates surround to form the housing 100, the battery module is simple in structure, the assembly and disassembly of the battery module are facilitated, a reinforcing rib 121 is provided on the lower cover plate 120, a cooling groove 122 is formed between two adjacent reinforcing ribs 121, the cooling groove 122 is located on one side of the lower cover plate 120 departing from the cells 200, the cells 200 in the battery module can be cooled, the reinforcing rib 121 further improves the structural strength of the housing 100 of the battery module, the battery module is strong in impact resistance and anti-extrusion capability, and the cells 200 in the housing 100 are ensured.

Preferably, the side plates in this embodiment include two first side plates 130 that are arranged oppositely, the inner wall of each first side plate 130 is provided with a plurality of buckle assemblies 300, both ends all are provided with a plurality of mounts 123 about upper cover plate 110 and lower cover plate 120, buckle assemblies 300 and mount 123 one-to-one, each buckle assembly 300 corresponds to a mount 123, after each first side plate 130 and upper cover plate 110 and lower cover plate 120 all assembled, the joint end of each buckle assembly 300 all is connected with a mount 123 joint, thereby make things convenient for battery module's installation and dismantlement. In other embodiments, a plurality of fixing frames 123 may be disposed on the inner wall of each first side plate 130, a plurality of fixing frames 123 are disposed at the left and right ends of the upper cover plate 110 and the lower cover plate 120, the fixing frames 123 correspond to the fastening assemblies 300 one-to-one, and after each first side plate 130 is assembled with the upper cover plate 110 and the lower cover plate 120, the fastening end of each fastening assembly 300 is connected with one fixing frame 123 in a clamping manner, so as to facilitate the installation and detachment of the battery module

Preferably, as shown in fig. 2 and 3, the fixing frame 123 is provided with a fastening hole 1231, the fastening assembly 300 includes a first fastening lug 310 and a second fastening lug 320, a deformation space is provided between the first fastening lug 310 and the second fastening lug 320, so that the first fastening lug 310 and the second fastening lug 320 can be elastically deformed before the fastening hole 1231 is formed, the first fastening lug 310 and the second fastening lug 320 are close to each other, the fastening assembly 300 can conveniently pass through the fastening hole 1231, and after the fastening assembly 300 is assembled with the fixing frame 123, the first fastening lug 310 and the second fastening lug 320 are both restored to a state before being deformed, so as to be fastened to the fixing frame 123.

Specifically, as shown in fig. 2, 3 and 5, the first engaging lug 310 includes a first limiting portion 311 and a first protruding portion 312, one end of the first limiting portion 311 is connected to the inner wall of the first side plate 130, the other end of the first limiting portion is connected to the first protruding portion 312, the second engaging lug 320 includes a second limiting portion 321 and a second protruding portion 322, one end of the second limiting portion 321 is connected to the inner wall of the first side plate 130, the other end of the second limiting portion is connected to the second protruding portion 322, after the fastening assembly 300 is assembled with the fixing frame 123, the first limiting portion 311 and the second limiting portion 321 are both located in the engaging hole 1231, and the first protruding portion 312 and the second protruding portion 322 are both engaged with the fixing frame 123. As shown in fig. 2, in this embodiment, the first protrusion 312 is provided with a first guiding inclined surface 313, and the second protrusion 322 is provided with a second guiding inclined surface 323, so as to reduce the resistance when the buckle assembly 300 passes through the buckle hole 1231.

Preferably, as shown in fig. 1, the lower cover plate flanges 124 are disposed on the left and right sides of the lower cover plate 120, and the lower cover plate flanges 124 are used to fix the battery cell 200, so as to prevent the battery cell 200 in the casing 100 from shaking, and improve the stability of the battery cell 200 in the casing 100.

Specifically, as shown in fig. 1 and fig. 3, the fixing frame 123 on the lower cover plate 120 is disposed on the lower cover plate flanging 124 at intervals, and the lower cover plate flanging 124 is provided with a first avoiding groove 1241, the first avoiding groove 1241 is used for avoiding the buckle assembly 300 on the first side plate 130, so as to improve the tightness between the first side plate 130 and the bottom plate during assembly.

Optionally, an upper cover plate flanging is also arranged on the upper cover plate 110 in this embodiment, the fixing frame 123 on the upper cover plate 110 is arranged on the upper cover plate flanging at intervals, a second avoiding groove is arranged on the upper cover plate flanging, and the second avoiding groove is used for avoiding the buckle assembly 300 on the first side plate 130, so that the first side plate 130 is tightly connected with the upper cover plate 110 after the assembly is completed. It should be noted that the fixing frame 123 on the upper cover plate 110 and the fixing frame 123 on the lower cover plate 120 have the same structure in this embodiment.

Preferably, as shown in fig. 1, the first side plate 130 further includes a first flange 131 and a second flange 132, the first flange 131 is disposed on the upper portion of the first side plate 130, the second flange 132 is disposed on the lower portion of the first side plate 130, the first flange 131 is adhesively connected to the upper cover plate 110, and the second flange 132 is adhesively connected to the lower cover plate 120, so that the firmness of the connection of the first side plate 130 is improved.

Preferably, as shown in fig. 1, the battery module further includes two second side plates 140 disposed opposite to each other, and the second side plates 140 are welded to both the upper and

lower cover plates

110 and 120. In other embodiments, the two second side plates 140 and the two first side plates 130 may be both snap-connected with the upper cover plate 110 and the lower cover plate 120.

This embodiment still provides a battery package, as shown in fig. 6, this battery package includes foretell battery module, the battery package still includes box 500 and liquid cooling subassembly 400, a plurality of battery modules set up in box 500, two adjacent battery module electricity are connected, the output of liquid cooling subassembly 400 sets up in cooling bath 122, liquid cooling subassembly 400 is used for cooling to battery module, the cooling effect of liquid cooling subassembly 400 to battery module has been improved, prevent that battery module from damaging because of the high temperature, the life of battery module and battery package has been improved.

Preferably, as shown in fig. 6, the liquid cooling assembly 400 includes a liquid inlet pipe 410, a liquid cooling plate 420 and a liquid outlet pipe 430, the liquid cooling plate 420 is disposed in the cooling tank 122, and both the liquid inlet pipe 410 and the liquid outlet pipe 430 are communicated with the liquid cooling plate 420. Specifically, liquid cooling subassembly 400 still includes the refrigerating unit in this embodiment, and feed liquor pipe 410 one end communicates with the delivery outlet of refrigerating unit, and the other end communicates with the inlet of liquid cooling board 420, and drain pipe 430 one end communicates with the liquid outlet of liquid cooling board 420, and the other end communicates with the input port of refrigerating unit to form complete liquid cooling return circuit, be provided with the liquid cooling medium in the liquid cooling return circuit, can make the liquid cooling medium circulate in the liquid cooling return circuit through the refrigerating unit and flow, thereby continuously cool off the battery module. It should be noted that, refrigerating unit has two kinds of functions of refrigeration and heating in this embodiment, and in cold weather, the temperature of battery package is lower, and the heating element in the refrigerating unit starts, heats the battery module, guarantees that the battery package normally works. It should be noted that the refrigeration unit is a technical means mature in the field, and the structure and the operation of the refrigeration unit are not described in detail in this embodiment.

Preferably, as shown in fig. 6, the liquid cooling assembly 400 further includes a foam 440, the foam 440 is disposed between the tank 500 and the liquid cooling plate 420, and the foam 440 is used for supporting the liquid cooling plate 420, reducing the vibration of the liquid cooling plate 420, and prolonging the service life of the liquid cooling plate 420.

Preferably, the liquid cooling assembly 400 further comprises a heat conducting glue 450, the heat conducting glue 450 is disposed between the liquid cooling plate 420 and the bottom of the cooling tank 122, and the heat conducting glue 450 can guide the heat generated by the battery module out of the liquid cooling plate 420 in time, so that the heat dissipation efficiency of the battery module is improved.

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. 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. The battery module is characterized by comprising a shell (100), wherein an electric core (200) is arranged in the shell (100), the shell (100) comprises an upper cover plate (110), a lower cover plate (120) and a plurality of side plates, at least part of the side plates are connected with the upper cover plate (110) and the lower cover plate (120) in a clamping mode, so that the upper cover plate (110), the lower cover plate (120) and the side plates are surrounded to form the shell (100), a plurality of reinforcing ribs (121) are arranged on the length direction of the lower cover plate (120), a cooling groove (122) is formed between the reinforcing ribs (121), and the cooling groove (122) is located on one side, deviating from the electric core (200), of the lower cover plate (120).

2. The battery module according to claim 1, wherein the side plates comprise two oppositely-arranged first side plates (130), the inner wall of each first side plate (130) is provided with a plurality of fastening assemblies (300), one ends of the upper cover plate (110) and the lower cover plate (120) close to the first side plates (130) are provided with a plurality of fixing frames (123), the fastening assemblies (300) correspond to the fixing frames (123) one by one, and the fastening ends of the fastening assemblies (300) are fastened and connected with the corresponding fixing frames (123).

3. The battery module according to claim 2, wherein the fixing frame (123) is provided with a clamping hole (1231), the buckle assembly (300) comprises a first clamping lug (310) and a second clamping lug (320), a deformation space is provided between the first clamping lug (310) and the second clamping lug (320), and the first clamping lug (310) and the second clamping lug (320) are both inserted into the clamping hole (1231) to be clamped on the fixing frame (123).

4. The battery module according to claim 3, wherein the first engaging lug (310) comprises a first limiting portion (311) and a first protruding portion (312), one end of the first limiting portion (311) is connected to the inner wall of the first side plate (130), the other end of the first limiting portion is connected to the first protruding portion (312), the second engaging lug (320) comprises a second limiting portion (321) and a second protruding portion (322), one end of the second limiting portion (321) is connected to the inner wall of the first side plate (130), the other end of the second limiting portion is connected to the second protruding portion (322), after the buckle assembly (300) is assembled with the fixing frame (123), the first limiting portion (311) and the second limiting portion (321) are both located in the engaging hole (1231), and the first protruding portion (312) and the second protruding portion (322) are both engaged with the fixing frame (123).

5. The battery module according to claim 2, wherein a first flange (131) and a second flange (132) are vertically arranged at the edge of the first side plate (130), the first flange (131) is adhesively connected with the upper cover plate (110), and the second flange (132) is adhesively connected with the lower cover plate (120).

6. The battery module according to claim 2, wherein the side plates further comprise two oppositely disposed second side plates (140), and each of the second side plates (140) is welded to the upper cover plate (110) and the lower cover plate (120).

7. Battery pack, comprising a battery module according to any of claims 1-6, further comprising a case (500) and a liquid-cooled assembly (400), wherein a plurality of battery modules are arranged in the case (500) and two adjacent battery modules are electrically connected, wherein an output end of the liquid-cooled assembly (400) is arranged in a cooling tank (122), and wherein the liquid-cooled assembly (400) is configured to cool the battery modules.

8. The battery pack of claim 7, wherein the liquid cooling assembly (400) comprises a liquid inlet tube (410), a liquid cooling plate (420), and a liquid outlet tube (430), the liquid cooling plate (420) being disposed within the cooling bath (122), the liquid inlet tube (410) and the liquid outlet tube (430) both being in communication with the liquid cooling plate (420).

9. The battery pack of claim 8, wherein the liquid cooled assembly (400) further comprises a foam (440), the foam (440) disposed between the case (500) and the liquid cooled plate (420), the foam (440) configured to support the liquid cooled plate (420).

10. The battery pack of claim 8, wherein the liquid cooled assembly (400) further comprises a thermally conductive glue (450), the thermally conductive glue (450) being disposed between the liquid cooled plate (420) and a bottom of the cooling tank (122).