CN220821789U

CN220821789U - Battery module and electricity utilization device

Info

Publication number: CN220821789U
Application number: CN202322275808.8U
Authority: CN
Inventors: 王浩泽; 李泽中; 陈保国; 刘峰
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-04-19
Anticipated expiration: 2033-08-23

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery module and an electric device. The battery module can ensure the flatness and flatness of the bottom surface of the battery module, and meets the assembly requirement of battery module assembly.

Description

Battery module and electricity utilization device

Technical Field

The present disclosure relates to battery technology, and particularly to a battery module and an electric device.

Background

With the economic development of new energy, the power battery has increasingly demanded, and the battery module is used as a combination body capable of directly providing electric energy, so that the application is also increasingly wide.

The prior VDA battery module is a battery module assembled by adopting batteries produced by German automobile industry Association (Verband der Automobilindustrie, VDA for short) standards, and the VDA battery module mainly comprises an electric core, a bottom shell, an outer frame, end plates and other module structural members, wherein the bottom shell and the outer frame and the end plates are connected through welding to form a module shell structure for accommodating the electric core. But battery module's drain pan only installs additional at the module middle part, does not have connection between its and the end plate, and when installing, the bottom surface of drain pan and the bottom surface of end plate are difficult to guarantee at the coplanar for this battery module bottom is uneven, can't guarantee the roughness, the planarization of battery module bottom surface, and then can't satisfy the actual assembly demand when battery module assembles.

Therefore, there is a need to design a battery module to solve the above-mentioned technical problems.

Disclosure of utility model

An object of the present utility model is to provide a battery module, which can ensure the flatness and flatness of the bottom surface of the battery module, and meet the assembly requirements during the assembly of the battery module.

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

The battery module comprises a bottom shell, an outer frame, two end plates and a battery pack, wherein the outer frame and the bottom shell are connected to form an annular accommodating channel, the battery pack is arranged in the accommodating channel, the two end plates are respectively arranged at two ends of the accommodating channel, and the end plates are arranged on the bottom shell and are attached to the bottom shell.

Optionally, the bottom shell includes a main body portion and two extension portions, the main body portion is connected with the outer frame, the two extension portions are disposed at two ends of the main body portion in a length direction, the extension portions extend out of the outer frame and are connected with the end plates, and the end plates are attached to the extension portions.

Optionally, the end plate is provided with a first positioning hole, and the extension part is correspondingly provided with a second positioning hole.

Optionally, the end plate further includes a plurality of first mounting holes, and the extending portion is provided with a plurality of second mounting holes in a one-to-one correspondence.

Optionally, the diameter of the second mounting hole is larger than the diameter of the first mounting hole.

Optionally, the two sides of the main body part along the width direction of the main body part are respectively provided with a flanging, the main body part is abutted to the bottom end of the battery pack, and the flanging is coated and abutted to the two sides of the outer frame.

Optionally, the main body portion is further provided with four bending grooves, and the bending grooves are disposed on the main body portion and located at two ends of the flange in the length direction.

Optionally, the outer frame is in a U-shaped structure, and the outer frame is coated on the top surface and two side surfaces of the battery pack.

Optionally, the battery pack and the bottom shell are connected through gluing.

The utility model also aims to provide an electric device which comprises the battery module according to any one of the schemes, and can ensure the flatness and flatness of the bottom surface of the battery module and meet the assembly requirement in the assembly process of the battery module.

The utility model has the beneficial effects that:

The utility model provides a battery module and an electric device, wherein a bottom shell is prolonged, so that a battery pack and two end plates are arranged on the bottom shell, and the bottom shell is in fit with the end plates when the battery module is assembled, so that the flatness and flatness of the bottom of the battery module are ensured, the battery module is better fit with an assembly surface of the electric device when the battery module is assembled on the electric device, the problem that the battery module is extruded or the bottom shell is bent when the battery module is assembled due to uneven shaking of the battery module is avoided, the assembly requirement when the battery module is assembled is met, and the safety of the battery module is improved. And the bottom surface of this battery module is a plane, has improved the laminating nature of bottom surface and heat conduction pad when the battery module assembly, and then has improved thermal management performance.

Drawings

Fig. 1 is an isometric view of a battery module according to an embodiment of the present utility model;

Fig. 2 is an isometric view of a bottom shell provided in an embodiment of the present utility model;

Fig. 3 is a front view of a bottom chassis provided in an embodiment of the present utility model.

In the figure:

100. A bottom case; 110. a main body portion; 111. a bending groove; 120. an extension; 121. a second positioning hole; 122. a second mounting hole; 130. flanging;

200. An outer frame; 300. end plates.

Detailed Description

The utility model is described in further detail below with reference to the 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 thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a battery module, can guarantee the planarization and the flatness of battery module bottom surface, satisfies the assembly demand when battery module assembles.

Specifically, as shown in fig. 1 to 3, the battery module includes a bottom case 100, an outer frame 200, two end plates 300, and a battery pack, wherein the outer frame 200 and the bottom case 100 are connected to form an annular accommodating channel, the battery pack is disposed in the accommodating channel, the two end plates 300 are disposed at two ends of the accommodating channel, and the end plates 300 are disposed on the bottom case 100 and are adhered to the bottom case 100. Namely, the outer frame 200, the bottom shell 100 and the two end plates 300 are enclosed to form an outer shell, and the battery pack is arranged in the outer shell to form a battery module; and the bottom surface of the battery module is the bottom surface of the bottom case 100, and is a plane, instead of the bottom surface of the bottom case 100 and the end plate 300 which are spliced together, so that the flatness and flatness of the battery module are improved.

The battery module of this embodiment is through prolonging drain pan 100 for group battery and two end plates 300 all set up on drain pan 100, when carrying out battery module equipment, drain pan 100 and end plate 300 laminating set up, guaranteed the planarization of the bottom of this battery module and the smoothness, when making battery module assemble on external structure, better laminating between its and external structure's the assembly face, avoid battery module to shake the uneven problem that extrudees the group battery or lead to the drain pan 100 buckling when leading to when battery module equipment, satisfied the assembly demand when battery module equipment, improved battery module's security. And the bottom surface of this battery module is a plane, has improved the laminating nature of bottom surface and heat conduction pad when the battery module assembly, and then has improved thermal management performance.

In this embodiment, the battery pack includes a plurality of stacked battery cells, and the plurality of battery cells are disposed in the accommodating channel, so as to assemble the battery cells.

Optionally, the plurality of electric cores are electrically connected, so that the battery is integrated, i.e. the battery has a total positive connection end and a total negative connection end, and is electrically connected with the outside.

Optionally, the battery pack and the bottom case 100 are connected through glue, so that the connection of the battery pack and the bottom case is facilitated, the structure is simple, the weight of the battery module is reduced, and the connection strength is high.

In the present embodiment, the connection between the outer frame 200 and the end plate 300 is achieved by welding the outer frame 200 and the end plate 300, and the connection strength between the outer frame 200 and the end plate 300 is achieved.

Further, as shown in fig. 1, the outer frame 200 has a U-shaped structure, the outer frame 200 is coated on the top surface and two side surfaces of the battery pack, that is, the outer frame 200 mainly fixedly coats the top surface and the two side surfaces of the battery pack, the bottom shell 100 coats and extrudes the bottom surface of the battery pack, and an outer shell fixedly abutted against the battery pack in all directions is formed by the outer frame 200, the bottom shell 100 and the two end plates 300, so that the battery pack is assembled and fixed.

Optionally, the outer frame 200 is provided with a plurality of reinforcing ribs, so that the strength of the outer frame 200 is improved, and further, the limit fixation of the outer frame 200 to the battery pack is ensured.

In this embodiment, as shown in fig. 2 and 3, the bottom case 100 includes a main body 110 and two extending portions 120, the main body 110 is connected with the outer frame 200, the two extending portions 120 are disposed at two ends of the main body 110 in the length direction, the extending portions 120 extend out of the outer frame 200 and are connected with the end plate 300, the end plate 300 is attached to the extending portions 120, and the bottom case 100 is configured by extending the main body 110 outwards and providing the extending portions 120, so that both the end plate 300 and the battery pack can be disposed on the bottom case 100, and the bottom surface of the battery module is the bottom surface of the bottom case 100, thereby ensuring the flatness and flatness of the bottom surface of the battery module.

Further, the end plate 300 is provided with a first positioning hole, and the extension part 120 is correspondingly provided with a second positioning hole 121. When the battery module is assembled, the locating piece is arranged on the assembling tool, so that the locating piece sequentially penetrates through the second locating hole 121 and the first locating hole, and the limiting and fixing of the end plate 300 and the bottom plate are realized; meanwhile, when the battery module is assembled, the positioning pins on the external structure sequentially penetrate through the second positioning holes 121 and the first positioning holes, so that the joint connection of the bottom shell 100 and the end plate 300 is ensured, and the mounting accuracy and the error proofing capability are improved.

Alternatively, the first and second positioning holes 121 are oblong holes, giving the battery module assembly tolerance to be mounted on an external structure.

Still further, the end plate 300 further includes a plurality of first mounting holes, and the extension portion 120 is provided with a plurality of second mounting holes 122 in a one-to-one correspondence. When the battery module is assembled, the fixing of the battery module can be achieved by sequentially penetrating the fasteners through the first mounting holes and the second mounting holes 122, and the bottom shell 100 and the end plate 300 are fixed through the fasteners, so that the reliability of connection of the bottom shell 100 and the end plate 300 is improved, and the flatness and flatness of the bottom shell 100 and the end plate 300 are ensured.

Specifically, the second mounting holes 122 have a larger diameter than the first mounting holes, ensuring mountability of the bottom chassis 100.

Further, the main body 110 has flanges 130 on both sides of the main body in the width direction, the main body 110 abuts against the bottom end of the battery pack, and the flanges 130 cover and abut against both sides of the outer frame 200. The setting of turn-ups 130 plays the effect of supporting the protection to the both sides of battery module, has improved battery module's structural strength, and the expansion of battery cell in the battery module of restriction battery module that turn-ups 130 can also high strength simultaneously has improved battery module life-span and security.

Optionally, the main body 110 is further provided with four bending grooves 111, and the bending grooves 111 are disposed on two ends of the main body 110 in the length direction of the flange 130. The provision of the bending groove 111 can prevent the occurrence of the case where the strength of the bottom case 100 is reduced or cracked due to interference or other problems occurring in the bending process of the bottom case 100, thereby improving the service life and the service performance of the bottom case 100.

Optionally, the bottom case 100 is an aluminum plate, which has light weight and good structural strength.

It can be understood that the battery module further includes an assembly structure commonly used for battery modules such as an insulating member, a sampling member, and a bus bar, which is not described herein.

The embodiment also provides an electricity utilization device, which includes the battery module according to any one of the above schemes, and includes all technical effects of the above battery module, and is not described herein again. The power consumption device is exemplified by a battery pack, an automobile, a ship, etc., using the battery module, and is not particularly limited herein.

Further, the power utilization device further comprises a box body, wherein a positioning pin is arranged on the box body, and the positioning pin sequentially penetrates through the second positioning hole 121 and the first positioning hole to position the battery module.

Still further, this box still includes the fixed point, and the fixed point is equipped with the internal thread, and the fastener passes first mounting hole and second mounting hole 122 in proper order to with internal thread threaded connection, can realize the fixed to the battery module.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The battery module is characterized by comprising a bottom shell (100), an outer frame (200), two end plates (300) and a battery pack, wherein the outer frame (200) is connected with the bottom shell (100) to form an annular accommodating channel, the battery pack is arranged in the accommodating channel, the two end plates (300) are respectively arranged at two ends of the accommodating channel, and the end plates (300) are arranged on the bottom shell (100) and are in fit with the bottom shell (100).

2. The battery module according to claim 1, wherein the bottom case (100) includes a main body portion (110) and two extension portions (120), the main body portion (110) and the outer frame (200) are connected, the two extension portions (120) are disposed at both ends of the main body portion (110) in a length direction, the extension portions (120) extend out of the outer frame (200) and are connected with the end plate (300), and the end plate (300) is provided in a fitting manner with the extension portions (120).

3. The battery module according to claim 2, wherein the end plate (300) is provided with a first positioning hole, and the extension (120) is correspondingly provided with a second positioning hole (121).

4. The battery module according to claim 3, wherein the end plate (300) further comprises a plurality of first mounting holes, and the extension parts (120) are provided with a plurality of second mounting holes (122) in a one-to-one correspondence.

5. The battery module according to claim 4, wherein the second mounting hole (122) has a diameter larger than that of the first mounting hole.

6. The battery module according to claim 2, wherein the main body portion (110) is provided with flanges (130) on both sides in the width direction thereof, the main body portion (110) abuts against the bottom end of the battery pack, and the flanges (130) are wrapped around and abut against both sides of the outer frame (200).

7. The battery module according to claim 6, wherein the main body portion (110) is further provided with four bending grooves (111), and the bending grooves (111) are provided on the main body portion (110) at both ends in the length direction of the flange (130).

8. The battery module according to claim 1, wherein the outer frame (200) has a U-shaped structure, and the outer frame (200) is coated on the top surface and both side surfaces of the battery pack.

9. The battery module according to claim 1, wherein the battery pack and the bottom case (100) are connected by adhesive bonding.

10. An electrical device comprising a battery module according to any one of claims 1-9.