CN220628000U

CN220628000U - Battery pack and electric equipment

Info

Publication number: CN220628000U
Application number: CN202322138948.0U
Authority: CN
Inventors: 孙世强
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2024-03-19
Anticipated expiration: 2033-08-09

Abstract

The embodiment of the application provides a battery pack and electric equipment, and relates to the technical field of batteries. The battery pack comprises a battery box body and a plurality of battery cell modules, wherein the battery cell modules are sequentially arranged in the battery box body along a first direction, each battery cell module comprises a cold plate and two battery cell groups, the two battery cell groups are respectively adhered to two opposite plate surfaces of the cold plate, each battery cell group comprises a plurality of battery cells, the battery cells in each battery cell group are sequentially arranged along a second direction, the first direction and the second direction are perpendicular, and the battery cells and/or the cold plate are adhered to the battery box body, so that the overall structural strength of the battery pack can be ensured on the basis of reducing cost.

Description

Battery pack and electric equipment

Technical Field

The application relates to the technical field of batteries, in particular to a battery pack and electric equipment.

Background

At present, the mainstream battery pack design is CTP or CTC form, separates the battery box into a plurality of battery bins through the longitudinal beam in the battery pack, and the longitudinal beam in the battery box and the design of the middle hanging point and the like can increase the integral structural strength of the battery pack.

However, the more vertical and horizontal beam designs in the battery box body make the box body processing difficulty increase, and the design of the middle hanging point makes the box body and box cover structure fixed and seal design difficulty increase. Due to the design of the longitudinal beam and the middle hanging point, the material cost and the processing cost of parts are increased, and from the angle of system grouping, the cell volume grouping efficiency and the weight grouping efficiency are lowered.

Disclosure of Invention

The object of the present application includes, for example, providing a battery pack that can ensure the structural strength of the battery pack as a whole on the basis of reduced cost.

The purpose of this application still includes, provides a consumer, and it can guarantee the holistic structural strength of battery package on reduce cost's basis.

Embodiments of the present application may be implemented as follows:

the embodiment of the application provides a battery pack, and it includes battery box and a plurality of electric core module, a plurality of electric core module along first direction set gradually in the battery box, every electric core module include cold plate and two electric core groups, two electric core group respectively bond in on two relative faces of cold plate, every electric core group includes a plurality of electric cores, every electric core in the electric core group sets gradually along the second direction, wherein, first direction with the second direction is mutually perpendicular, electric core and/or cold plate with the battery box bonds.

Optionally, an end bracket is disposed in the battery box, the end bracket is disposed on the same side of the plurality of battery cell groups, and the battery cells of the plurality of battery cell groups, which are close to the end bracket, are bonded with the end bracket.

Optionally, the end bracket is connected or bonded with the battery box body through a bolt.

Optionally, the cells in the two opposite cell groups in the two adjacent cell modules are bonded.

Optionally, the battery box body comprises a bottom plate, and the bottom of the battery cell is bonded with the bottom plate.

Optionally, the battery box body comprises a top plate, and the top of the battery cell is bonded with the top plate.

Optionally, the battery box body includes a side plate, and a side surface of the battery cell near the side plate is adhered to the side plate.

Optionally, a supporting beam is arranged in the battery box body, a plurality of limiting grooves are formed in the supporting beam, the same ends of the cold plates are arranged in the limiting grooves in a one-to-one correspondence mode, and the cold plates are arranged in the limiting grooves and are bonded with the supporting beam.

Optionally, the battery core and/or the cold plate are adhered to the battery box body through pouring sealant or structural adhesive.

The embodiment of the application also provides electric equipment, which comprises the battery pack.

The beneficial effects of the battery pack and the electric equipment of the embodiment of the application include, for example: in order to guarantee the overall structural strength of the battery pack on the basis of reducing the cost, the two battery cell groups are bonded with the cold plate to form a battery cell module, and the battery cells and/or the cold plate in the battery cell groups are bonded with the battery box body.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a battery pack according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a battery cell module according to an embodiment of the present application;

FIG. 3 is a top view of a battery pack according to an embodiment of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a cross-sectional view of a battery pack according to an embodiment of the present application;

FIG. 6 is an exploded view of a battery pack according to another embodiment of the present application;

FIG. 7 is a top view of a battery pack according to another embodiment of the present application;

fig. 8 is an enlarged view of a portion B in fig. 7.

Icon: 100-a battery box; 110-end brackets; 120-a bottom plate; 130-top plate; 140-side plates; 150-supporting beams; 151-limit grooves; 152-a glue injection port; 160-a separator; 200-cell modules; 210-cold plate; 220-cell group.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "upper," "lower," "inner," "outer," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that, without conflict, features in embodiments of the present application may be combined with each other.

The inventor of the application finds that the existing battery box body is internally provided with a plurality of longitudinal beams and middle hanging points, the longitudinal beams and the transverse beams enable the processing difficulty of the box body to be increased, and the middle hanging points enable the structure fixing and sealing design difficulty of the box body and the box cover to be increased. Due to the design of the longitudinal beam and the middle hanging point, the material cost and the processing cost of parts are increased, and from the angle of system grouping, the cell volume grouping efficiency and the weight grouping efficiency are lowered. Embodiments of the present application provide a battery pack at least for solving the technical problem.

Referring to fig. 1-4, an embodiment of the present application provides a battery pack, including a battery case 100 and a plurality of battery cells 200, the plurality of battery cells 200 are sequentially disposed in the battery case 100 along a first direction, each battery cell 200 includes a cold plate 210 and two battery cell groups 220, the two battery cell groups 220 are respectively adhered to two opposite plate surfaces of the cold plate 210, each battery cell group 220 includes a plurality of battery cells, the battery cells in each battery cell group 220 are sequentially disposed along a second direction, wherein the first direction and the second direction are perpendicular, and the battery cells and/or the cold plate 210 are adhered to the battery case 100.

It should be noted that, the battery case 100 is substantially rectangular, the first direction is the length direction or the width direction of the battery case 100, and when the first direction is the length direction of the battery case 100, the second direction is the width direction of the battery case 100; when the first direction is the width direction of the battery case 100, the second direction is the length direction of the battery case 100.

The bonding of the battery cells and/or cold plate 210 to the battery case 100 includes: the battery cell is adhered to the battery case 100, the cold plate 210 is adhered to the battery case 100, and both the battery cell and the cold plate 210 are adhered to the battery case 100, thereby fixing the battery cell module 200 and the battery case 100 relatively.

In order to ensure the overall structural strength of the battery pack on the basis of reducing the cost, the two battery cell groups 220 are bonded with the cold plate 210 to form the battery cell module 200, and the battery cells in the battery cell groups 220 and/or the cold plate 210 are bonded with the battery box body 100, so that compared with the original battery box body 100, the longitudinal and transverse beams and the middle hanging points are omitted, the cost is reduced, and the overall structural strength of the battery pack is also ensured due to the fact that the battery cell module 200 plays a role of the structural beam.

In an alternative embodiment, an end bracket 110 is disposed in the battery case 100, the end bracket 110 is disposed on the same side of the plurality of battery cells 220, and the battery cells of the plurality of battery cells 220 near the end bracket 110 are bonded to the end bracket 110.

Wherein, two end brackets 110 are oppositely arranged in the second direction, one end bracket 110 is positioned at one side of the plurality of battery cell groups 220, and the other end bracket 110 is positioned at the other side of the plurality of battery cell groups 220; the surface of the end support 110 facing the battery cell is provided with an attaching surface, and the battery cell of the battery cell group 220 close to the end support 110 is adhered to the attaching surface on the end support 110, for example, when the battery cell is a cylindrical battery cell, the attaching surface is in a circular arc shape.

The end bracket 110 is connected or bonded to the battery case 100 by bolts.

When the end bracket 110 is connected with the battery box 100 through bolts, the end bracket 110 is vertically provided with bolt holes through which bolts pass to be connected with the bottom wall of the battery box 100; when the end bracket 110 is adhered to the battery case 100, the end bracket 110 may be adhered at the bottom to the inner bottom wall of the battery case 100, or the end bracket 110 may be adhered to the inner side wall of the battery case 100.

The battery cell module 200 is fixed to the battery case 100 by bonding the battery cell adjacent to the end bracket 110 to the bonding surface of the end bracket 110 and then bolting or bonding the end bracket 110 to the battery case 100.

In an alternative embodiment, the cells in the opposing two cell groups 220 in adjacent two cell modules 200 are bonded.

The cells in the two opposite cell groups 220 in the two adjacent cell modules 200 are bonded by the pouring sealant, so that all the cell modules 200 are adhered to form an integral rigid block. When the end bracket 110 is disposed in the battery case 100, the adhered integrated battery cell module 200 is adhered to the end bracket 110, and when the end bracket 110 is not disposed in the battery case 100, the adhered integrated battery cell module 200 is directly adhered to the battery case 100.

In an alternative embodiment, the battery case 100 includes a bottom plate 120, and the bottom of the battery cell is bonded to the bottom plate 120.

In order to better fix the battery cell modules 200, the bottoms of the battery cells are adhered to the bottom plate 120, at this time, each battery cell module 200 is fixed to the bottom plate 120, and each battery cell module 200 plays a role of a structural beam, so that the overall structural strength of the battery pack is ensured.

In an alternative embodiment, referring to fig. 5, the battery case 100 includes a top plate 130, and the top of the battery cell is bonded to the top plate 130.

To better fix the cell modules 200, the top of the cell is bonded to the top plate 130, and at this time, each cell module 200 is fixed to the top plate 130, however, it is understood that the bottom of the cell may be bonded to the bottom plate 120 at the same time as the top of the cell is bonded to the top plate 130, or only the top of the cell is bonded to the top plate 130 or the bottom of the cell is bonded to the bottom plate 120.

In an alternative embodiment, the battery case 100 includes a side plate 140, and the side of the battery cell adjacent to the side plate 140 is bonded to the side plate 140.

Note that, in the case where the end bracket 110 is not provided, the side surface of the battery cell close to the side plate 140 is directly bonded to the side plate 140; preferably, the cell module 200 and the side plate 140 may be fixed by bonding only the side surface of the outermost cell in the second direction to the side plate 140.

In an alternative embodiment, the battery case 100 is provided with a partition 160, the partition 160 divides the interior of the battery case 100 into a battery compartment and an electrical compartment, the battery cell modules 200 are all disposed in the battery compartment, and the sides of the battery cells facing the partition 160 are bonded to the partition 160.

It can be appreciated that when only the battery compartment is provided in the battery case 100, the separator 160 is not provided in the battery case 100, and the side surface of the battery cell adjacent to the side plate 140 is directly adhered and fixed to the side plate 140.

In an alternative embodiment, referring to fig. 6 to 8, a supporting beam 150 is disposed in the battery case 100, a plurality of limiting grooves 151 are disposed on the supporting beam 150, the same ends of a plurality of cold plates 210 are disposed in the plurality of limiting grooves 151 in a one-to-one correspondence manner, and the portion of the cold plates 210 disposed in the limiting grooves 151 is adhered to the supporting beam 150.

The support beams 150 are oppositely arranged in the second direction, a plurality of limiting grooves 151 are formed in each support beam 150, the limiting grooves 151 on one support beam 150 are matched with the first ends of the plurality of cold plates 210 in a one-to-one correspondence manner, the limiting grooves 151 on the other support beam 150 are matched with the second ends of the plurality of cold plates 210 in a one-to-one correspondence manner, and the part, arranged in the limiting grooves 151, of the cold plates 210 is adhered to the support beam 150, so that the cold plates 210 are fixed with the support beam 150, the support beam 150 is fixed with the battery box 100, and the battery cell module 200 is fixed with the battery box 100.

In alternative embodiments, the cells and/or cold plate 210 are bonded to the battery case 100 by potting adhesive or structural adhesive.

In the case that the end bracket 110 is disposed in the battery case 100, the cells of the plurality of cell groups 220 near the end bracket 110 are bonded with the end bracket 110 through structural adhesive; when the support beam 150 is provided in the battery case 100, the support beam 150 is provided with a glue injection port 152 communicating with the limiting groove 151, and the structural glue is injected into the limiting groove 151 through the glue injection port 152, so that the cold plate 210 and the support beam 150 are bonded by the structural glue.

When the bottom of the battery cell is bonded with the bottom plate 120, the bottom of the battery cell is bonded with the bottom plate 120 through pouring sealant; when the top of the battery cell is bonded with the top plate 130, the top of the battery cell is bonded with the top plate 130 through pouring sealant; when the side surface of the battery cell close to the side plate 140 is adhered to the side plate 140, the side surface of the battery cell close to the side plate 140 is adhered to the side plate 140 through pouring sealant.

Including but not limited to automobiles, ships, and spacecraft. The automobile can be a fuel oil automobile, a fuel gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like; spacecraft include airplanes, rockets, space planes, spacecraft, and the like. The embodiment of the application does not limit the electric equipment in particular.

To sum up, the embodiment of the application provides a battery pack and electric equipment, in order to guarantee the overall structural strength of the battery pack on the basis of reducing the cost, two battery cell groups 220 are bonded with a cold plate 210 to form a battery cell module 200, glue is filled in a battery box body 100, gaps among battery cells, between the battery cells and the battery box body 100, between the battery cells and an end support 110 or a supporting beam 150 are filled with glue, and therefore the battery cell module 200 and the battery box body 100 are fixed, the battery cell module 200 plays a role of a structural beam, and compared with the original battery box body 100, a longitudinal beam and a transverse beam and a middle hanging point are omitted, the cost is reduced, and the overall structural strength of the battery pack is guaranteed.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a battery package, its characterized in that includes battery box (100) and a plurality of electric core module (200), a plurality of electric core module (200) set gradually along first direction in battery box (100), every electric core module (200) include cold plate (210) and two electric core group (220), two electric core group (220) bond respectively on two face that cold plate (210) are relative, every electric core group (220) include a plurality of electric core, every electric core in electric core group (220) sets gradually along the second direction, wherein, first direction with the second direction is mutually perpendicular, electric core and/or cold plate (210) with battery box (100) bond.

2. The battery pack according to claim 1, wherein an end bracket (110) is disposed in the battery case (100), the end bracket (110) is disposed on the same side of the plurality of cell groups (220), and the cells of the plurality of cell groups (220) adjacent to the end bracket (110) are bonded to the end bracket (110).

3. The battery pack according to claim 2, wherein the end bracket (110) is bolted or bonded to the battery case (100).

4. The battery pack according to claim 1, wherein the cells of two opposing cell groups (220) in adjacent two of the cell modules (200) are bonded.

5. The battery pack according to claim 1, wherein the battery case (100) includes a bottom plate (120), and the bottom of the battery cell is bonded to the bottom plate (120).

6. The battery pack according to claim 1, wherein the battery case (100) includes a top plate (130), and the top of the battery cell is bonded to the top plate (130).

7. The battery pack according to claim 1, wherein the battery case (100) includes a side plate (140), and a side surface of the battery cell adjacent to the side plate (140) is bonded to the side plate (140).

8. The battery pack according to claim 1, wherein a support beam (150) is disposed in the battery case (100), a plurality of limiting grooves (151) are disposed on the support beam (150), the same ends of the plurality of cold plates (210) are disposed in the plurality of limiting grooves (151) in a one-to-one correspondence manner, and the portions of the cold plates (210) disposed in the limiting grooves (151) are bonded to the support beam (150).

9. The battery pack according to claim 1, wherein the battery cells and/or the cold plate (210) are bonded to the battery case (100) by potting adhesive or structural adhesive.

10. A powered device comprising a battery pack according to any one of claims 1-9.