CN222190919U

CN222190919U - Battery devices and electrical equipment

Info

Publication number: CN222190919U
Application number: CN202422309418.2U
Authority: CN
Inventors: 郭新飞
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2024-09-23
Filing date: 2024-09-23
Publication date: 2024-12-17
Anticipated expiration: 2034-09-23

Abstract

The application relates to the technical field of batteries, in particular to a battery device and electric equipment. The battery device comprises a box body, a battery monomer, a heat exchange component and at least one fixing piece, wherein an accommodating cavity is formed in the box body, the battery monomer is arranged in the accommodating cavity, the heat exchange component is arranged in the accommodating cavity and is configured to exchange heat with the battery monomer, the fixing piece is connected with the box body, and the fixing piece and the box body clamp and fix the heat exchange component together. According to the battery device, the fixing piece and the box body are used for clamping and fixing the heat exchange component together, so that the heat exchange component is fixed in the accommodating cavity of the box body and can exchange heat with the battery monomer, and the temperature of the battery monomer is regulated.

Description

Battery device and electric equipment

Technical Field

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

Background

The power battery is a core element of the electric automobile, and the quality and efficiency of the power battery are directly related to and influence the quality and effect of the electric automobile. The battery pack thermal management system is a core component of the battery system, and has the main functions of maintaining the battery system in a proper temperature range in the working process, so that the service performance, the thermal safety and the cycle life of the battery system are ensured.

The battery pack thermal management system includes a heat exchange assembly configured to exchange heat with the battery cells for regulating the temperature of the battery cells. The current heat exchange assembly is mainly connected to the battery box body through a riveting process, has poor fixing reliability and is inconvenient to install.

Disclosure of utility model

In view of the defects existing in the prior art, the application aims to provide a battery device and electric equipment, which can effectively solve the problems that a heat exchange component is poor in fixing reliability and inconvenient to install.

A first aspect of the present application proposes a battery device including:

the box body is internally provided with a containing cavity;

the battery monomer is arranged in the accommodating cavity;

The heat exchange assembly is arranged in the accommodating cavity and is configured to exchange heat with the battery monomer;

At least one fixing piece, the fixing piece is connected with the box body, and the fixing piece and the box body clamp and fix the heat exchange assembly together.

According to the battery device, the fixing piece and the box body are used for clamping and fixing the heat exchange component together, so that the heat exchange component is fixed in the accommodating cavity of the box body and can exchange heat with the battery monomer, and the temperature of the battery monomer is regulated.

In some embodiments of the application, the box comprises a support plate and a plurality of side plates arranged at the outer edge of the support plate, the support plate and the side plates form a containing cavity in a surrounding mode, the fixing piece is connected with the support plate and/or the side plates, and the heat exchange assembly is clamped between the support plate and the fixing piece.

Through locating the heat exchange component clamp between backup pad and the mounting, the heat exchange component can locate single one side of battery along the direction of perpendicular to backup pad to reduce the space that the heat exchange component occupies along the direction that is on a parallel with the backup pad, so that hold the intracavity and set up more single batteries, and then improve battery device's energy storage.

In some embodiments of the present application, the fixing member includes a first expansion beam and a second expansion beam disposed at intervals along a first direction, the first expansion beam and the second expansion beam being disposed in the receiving chamber, one end of the heat exchange assembly being interposed between the first expansion beam and the support plate along the first direction, the other end of the heat exchange assembly being interposed between the second expansion beam and the support plate, the first direction being one of a length direction and a width direction of the battery device.

Through locating the one end clamp of heat exchange assembly along first direction between first expansion beam and the backup pad, locate the other end clamp of heat exchange assembly along first direction between second expansion beam and the backup pad to can fix heat exchange assembly's both ends along first direction, and then improve heat exchange assembly at box internal fixation reliability. Meanwhile, the first expansion beam and the second expansion beam are respectively of conventional structures in the box body, so that the heat exchange assembly can be fixed on the basis of not additionally adding a fixing structure, and the cost is reduced.

In some embodiments of the present application, the fixing member further includes a first liner plate and a second liner plate disposed at intervals along a second direction, the first liner plate and the second liner plate are disposed in the accommodating cavity, one end of the heat exchange assembly is sandwiched between the first liner plate and the support plate along the second direction, the other end of the heat exchange assembly is sandwiched between the second liner plate and the support plate, and the second direction is perpendicular to the first direction.

Through locating the one end clamp of heat exchange assembly along the second direction between first welt and the backup pad, locate the other end clamp of heat exchange assembly along the second direction between second welt and the backup pad to can fix the both ends of heat exchange assembly along the second direction, and then improve heat exchange assembly at the box internal fixation reliability. Meanwhile, the first lining plate and the second lining plate are of conventional structures in the box body respectively, so that the heat exchange assembly can be fixed on the basis of not additionally adding a fixing structure, and the cost is reduced.

In some embodiments of the application, the heat exchange assembly comprises a first surface facing the fixture and a second surface facing the support plate, wherein;

Structural adhesive is arranged between the first surface and the fixing piece, and/or structural adhesive is arranged between the second surface and the supporting plate.

Through setting up the structural adhesive between heat exchange assembly and mounting, when heat exchange assembly and mounting are the conducting piece of different materials, because the existence of structural adhesive, can reduce the electrochemical corrosion phenomenon that takes place between heat exchange assembly and the mounting to reduce the damage of heat exchange assembly and mounting, through setting up the structural adhesive between heat exchange assembly and backup pad, when heat exchange assembly and backup pad are the conducting piece of different materials, because the existence of structural adhesive, can reduce the electrochemical corrosion phenomenon that takes place between heat exchange assembly and the backup pad, thereby reduce the damage of heat exchange assembly and backup pad.

In some embodiments of the application, the heat exchange assembly comprises a heat exchange plate, the edge of which is sandwiched between the support plate and the fixing member.

The heat exchange plate has larger surface area compared with the heat exchange tube, so that the heat exchange efficiency of the heat exchange assembly and the battery monomers is improved, meanwhile, the edge of the heat exchange plate is clamped between the support plate and the fixing piece, namely, the fixing piece and the edge of the heat exchange plate are correspondingly arranged, the occupied space of the fixing piece in the accommodating cavity is reduced, more battery monomers are arranged in the accommodating cavity, and the energy storage capacity of the battery device is improved.

In some embodiments of the present application, a space is formed between a portion of the heat exchange plate and the support plate, and an electrophoresis channel communicating with the space is formed between an edge of the heat exchange plate and the support plate.

Through being formed with the interval space between heat exchanger plate and backup pad to be formed with the electrophoresis passageway that is linked together with the interval space between the edge of heat exchanger plate and backup pad, after heat exchanger plate and box equipment, the electrophoresis liquid is poured into to the interval space between heat exchanger plate and backup pad in the accessible electrophoresis passageway, thereby forms the electrophoresis coating at the surface of heat exchanger plate and backup pad, and then improves the corrosion resistance of heat exchanger plate and backup pad.

In some embodiments of the present application, an expansion glue is disposed in the space, the curing temperature of the expansion glue is 150 ° or more and 220 ° or less, and the heat exchange plate is connected with the support plate through the expansion glue.

Through setting up the inflation and gluing, be used for supporting the heat transfer board after the inflation of inflation gluing is heated to make heat transfer board and backup pad interval set up, reduce the heat transfer board and be close to the backup pad after receiving thermal deformation, simultaneously after the backup pad receives outside impact deformation, the backup pad after the deformation can't directly extrude the heat transfer subassembly, thereby reduce the damage of heat transfer subassembly. Meanwhile, the curing temperature of the expansion rubber is set to be more than or equal to 150 degrees and less than or equal to 220 degrees, so that the deformation of the expansion rubber can be reduced under the condition that the heat exchange plate releases heat, and the supporting strength of the expansion rubber is improved.

In some embodiments of the application, the heat exchange plate comprises a first plate part and a second plate part which are connected, the second plate part is arranged on one side of the first plate part facing the supporting plate, the second plate part is provided with a first part protruding away from the first plate part and a second part attached to the first plate part, the first part and the first plate part are formed with heat exchange flow channels, and the surface of the second part facing the supporting plate is connected with expansion glue.

Because the first part is protruding towards the direction that deviates from first board portion and sets up, is connected with the second part with the inflation glue, the inflation glue after the inflation can reduce the extrusion deformation that causes the heat exchange runner, simultaneously, reduces the inflation glue and bonds the back with the heat transfer board and occupy the space along the direction of perpendicular to backup pad, and then reduces the box and occupy along the space of perpendicular to backup pad direction.

In some embodiments of the application, at least one side edge of the heat exchange plate is provided with a plug hole in a penetrating way, the support plate is provided with a plug protrusion corresponding to the plug hole, and the plug protrusion penetrates through the plug hole and is welded with the fixing piece.

Through setting up the spliced eye, the grafting arch in the backup pad can pass the spliced eye and weld mutually with the mounting to connect fixed backup pad and mounting, and press from both sides the fixed heat exchange plate through backup pad and mounting jointly. Meanwhile, the heat exchange plate can be positioned and installed on the supporting plate by inserting the inserting protrusions into the inserting holes, so that the deviation of the position of the heat exchange plate in the installation process is reduced.

In some embodiments of the present application, a portion of the heat exchange plate corresponding to the battery cell is provided with a first mounting hole in a penetrating manner, the fixing piece further comprises a fixing piece, a portion of the fixing piece is arranged on one side of the heat exchange plate facing the battery cell and is abutted against the heat exchange plate, and another portion of the fixing piece penetrates through the first mounting hole and is connected with the support plate.

Through setting up the stationary blade to press from both sides the heat exchanger plate jointly through stationary blade and backup pad, can promote the fixed effect to the heat exchanger plate, reduce the deformation after the heat exchanger plate is heated simultaneously.

In some embodiments of the present application, a portion of the heat exchange plate is recessed toward a direction away from the battery cell and formed with a mounting groove, and a portion of the fixing plate is disposed in the mounting groove.

The fixing piece is arranged in the mounting groove, so that the protruding heat exchange plate of the fixing piece can be reduced to face the surface of the battery cell, and the phenomenon that the fixing piece is abutted against the battery cell is reduced.

In some embodiments of the application, the battery device further comprises a supporting beam, wherein the supporting beam is arranged on one side of the heat exchange assembly facing the battery unit, and the heat exchange assembly is clamped with the supporting beam together.

Through locating the heat exchange assembly clamp between supporting beam and the backup pad, can promote the fixed effect to the heat exchange assembly, reduce the deformation after the heat exchange assembly is heated simultaneously.

In some embodiments of the application, the surface of the heat exchange assembly facing the battery cell is provided with an insulating layer.

Through being equipped with the insulating layer at heat exchange assembly towards the free surface of battery, can improve heat exchange assembly's corrosion resistance, and when heat exchange assembly and the free surface of battery contact, the existence of insulating layer can reduce the short circuit phenomenon of taking place between heat exchange assembly and the free surface of battery.

In some embodiments of the application, the outer surface of the case is provided with an impact resistant layer.

Through being equipped with the impact layer at the surface of box, can reduce the box and take place to warp under the effect of external impact, and then reduce the box extrusion after the deformation and damage heat exchange plate and battery monomer.

The second aspect of the application also proposes an electrical consumer comprising a battery device according to any one of the above.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic view of a vehicle according to an embodiment of the present application;

Fig. 2 is a schematic structural view of a battery device according to an embodiment of the present application;

Fig. 3 is a schematic structural view of a battery cell assembly according to an embodiment of the present application;

Fig. 4 is a schematic view illustrating an exploded structure of a battery cell according to an embodiment of the present application;

FIG. 5 is a top view of the battery device of FIG. 2 with the battery cells removed;

fig. 6 is an isometric view of the battery device of fig. 5;

fig. 7 is a partially exploded structural view of the battery device of fig. 5;

FIG. 8 is a schematic view of the cross-sectional structure A-A of FIG. 5;

fig. 9 is an enlarged schematic view of the B part in fig. 8;

FIG. 10 is a schematic view of the heat exchange assembly of FIG. 7;

FIG. 11 is a top view of the case of FIG. 7;

FIG. 12 is an isometric view of the case of FIG. 7;

FIG. 13 is a schematic view of the connection between the housing and the heat exchange assembly of FIG. 7;

Fig. 14 is an enlarged schematic view of the C portion in fig. 8.

Reference numerals in the specific embodiments are as follows:

1. a vehicle;

10. 11, a controller 12, a motor;

20. Cell assembly, 21, cell, 211, end cover, 212, shell, 213, electrode assembly, 214, electrode terminal;

30. A case; 31, accommodating cavities, 32, supporting plates, 33, side plates, 34, electrophoresis channels, 35, plug-in protrusions, 36, connecting protrusions, 37, supporting protrusions, 38 and spacing spaces;

40. The heat exchange device comprises a heat exchange assembly, 41, a heat exchange plate, 411, a first plate part, 4111, a first surface, 412, a second plate part, 4121, a second surface, 4122, a first part, 4123, a second part, 4124, a heat exchange runner, 413, a plug hole, 414, a first mounting hole, 415, a second mounting hole, 416, a water inlet end, 417 and a water outlet end;

50. A fixing member; 51, a first expansion beam, 52, a second expansion beam, 53, a first lining plate, 54, a second lining plate, 55 and a fixing sheet;

60. Swelling glue;

70. A support beam 71, a mounting member;

80. and a mounting piece.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In describing embodiments of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or interconnected between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those skilled in the art according to specific circumstances.

In the description of embodiments of the application, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. Lithium ion batteries have been widely used in mobile and portable electrical appliances because of their high energy density, high average open circuit voltage, and long cycle life.

In order to solve the problems of poor fixing reliability and inconvenient installation of the heat exchange component, the application provides a battery device and electric equipment with the battery device, and according to the battery device and the electric equipment, the heat exchange component can exchange heat with a battery monomer, and then adjust the free temperature of battery, simultaneously, heat exchange assembly need not to adopt riveting or screw connection's technology and box to can improve the fixed reliability of heat exchange assembly in the box, and be convenient for heat exchange assembly's installation.

The battery device according to embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells connected in series, parallel, or series-parallel by a bus member.

In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells, and the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module, as an example. As an example, the battery module may be formed by binding a plurality of battery cells by a tie.

In some embodiments, the battery device may be a battery pack including a case and one or more battery cell assemblies housed in the case.

As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the case in such a manner that the battery module is fixed in the case.

As an example, the battery cell assembly may be accommodated in the case by directly fixing a plurality of battery cells to the case.

As an example, the case may include a first case and a second case. The first box body and the second box body are buckled, so that a closed space is formed inside the box body to accommodate the battery cell assembly. The closing means covering or closing, and can be sealing or unsealing. The first housing may be a top cover or a bottom plate.

As an example, the case may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected with the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

As an example, the tank may be part of the chassis structure of the vehicle. For example, the roof of the tank may become at least part of the floor of the vehicle, or the frame of the tank may become at least part of the cross and longitudinal beams of the vehicle.

In some embodiments, the battery device refers to an energy storage device that includes a housing with a door on at least one side of the housing. The energy storage device comprises an energy storage container, an energy storage electric cabinet and the like.

The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells and battery devices, for example, mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, vehicles, ships, spacecraft, and the like, and for example, spacecraft including airplanes, rockets, space shuttles, spacecraft, and the like.

Fig. 1 is a schematic structural view of a vehicle 1 according to some embodiments of the present application. As shown in fig. 1, the vehicle 1 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle 1 is provided inside with a battery device 10, and the battery device 10 may be provided at the bottom or at the head or at the tail of the vehicle 1. The battery device 10 may be used for power supply of the vehicle 1, for example, the battery device 10 may serve as an operating power source of the vehicle 1. The vehicle 1 may further comprise a controller 11 and a motor 12, the controller 11 being adapted to control the battery arrangement 10 to power the motor 12, e.g. for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the present application, the battery device 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, providing driving power for the vehicle 1 instead of or in part instead of fuel oil or natural gas.

Fig. 2 is a schematic structural view of a battery device 10 according to an embodiment of the present application. Fig. 3 is a schematic structural view of a battery cell assembly 20 according to an embodiment of the present application. As shown in connection with fig. 2 and 3, in order to meet different use power demands, the battery device 10 may include a plurality of battery cells 21, and the battery cells 21 refer to the smallest units constituting the battery device 10. A plurality of battery cells 21 may be connected in series and/or parallel together via electrode terminals for various applications. The plurality of battery cells 21 may be connected in series or parallel or in parallel, and the series-parallel connection refers to a mixture of series connection and parallel connection.

As shown in fig. 2 and 3, the battery device 10 may include a plurality of battery cell assemblies 20 and a case 30, and the plurality of battery cell assemblies 20 are accommodated inside the case 30. The case 30 is used to house the battery cell 21 or the battery cell assembly 20 to reduce the effect of liquid or other foreign matter on the charge or discharge of the battery cell 21. The case 30 may have a simple three-dimensional structure such as a rectangular parallelepiped, a cylinder, or a sphere, or may have a complex three-dimensional structure formed by combining simple three-dimensional structures such as a rectangular parallelepiped, a cylinder, or a sphere.

The battery unit assembly 20 may include a plurality of battery units 21, where the plurality of battery units 21 may be connected in series, parallel, or series-parallel to form the battery unit assembly 20, and then the plurality of battery unit assemblies 20 may be connected in series, parallel, or series-parallel to form the battery device 10. The battery cell 21 may have a cylindrical shape, a flat shape, a rectangular parallelepiped shape, or other shapes, and the embodiment of the present application is not limited thereto. The battery cells 21 are generally classified into three types, i.e., a cylindrical battery cell, a prismatic battery cell, and a pouch battery cell, in a packaging manner, and the embodiment of the present application is not limited thereto. However, for simplicity of description, the following embodiments will be described by taking the square lithium ion battery cell 21 as an example.

Fig. 4 is a schematic exploded view of a battery cell 21 according to some embodiments of the present application. The battery cell 21 refers to the smallest unit constituting the battery device 10. As shown in fig. 4, the battery cell 21 includes an end cap 211, a case 212, and an electrode assembly 213.

The end cap 211 refers to a member that is covered at the opening of the case 212 to isolate the inner environment of the battery cell 21 from the outer environment. Without limitation, the shape of the end cap 211 may be adapted to the shape of the housing 212 to fit the housing 212. Alternatively, the end cover 211 may be made of a material having a certain hardness and strength (such as an aluminum alloy), so that the end cover 211 is not easy to deform when being extruded and collided, so that the battery cell 21 can have a higher structural strength, and the safety performance can be improved. The end cap 211 may be provided with a functional member such as an electrode terminal 214. The electrode terminals 214 may be used to be electrically connected with the electrode assembly 213 for outputting or inputting electric power of the battery cells 21. In some embodiments, the end cap 211 may also be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. In some embodiments, insulation may also be provided on the inside of the end cap 211, which may be used to isolate electrical connection components within the housing 212 from the end cap 211 to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

The case 212 is an assembly for mating with the end cap 211 to form an internal environment of the battery cell 21, wherein the formed internal environment may be used to accommodate the electrode assembly 213, an electrolyte (not shown in the drawings), and other components. The case 212 and the end cap 211 may be separate members, and an opening may be provided in the case 212, and the interior of the battery cell 21 may be formed by closing the opening with the end cap 211 at the opening. The end cap 211 and the housing 212 may be integrated, and specifically, the end cap 211 and the housing 212 may form a common connection surface before other components are put into the housing, and when the interior of the housing 212 needs to be sealed, the end cap 211 is covered with the housing 212. The housing 212 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 212 may be determined according to the specific shape and size of the electrode assembly 213. The material of the housing 212 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

The electrode assembly 213 is a component in which an electrochemical reaction occurs in the battery cell 21. One or more electrode assemblies 213 may be contained within the housing 212. The electrode assembly 213 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode sheets having the active material constitute the main body portion of the electrode assembly 213, and the portions of the positive and negative electrode sheets having no active material constitute tabs (not shown in the drawings) respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery, the positive and negative active materials react with the electrolyte, and the tab is connected to the electrode terminal 214 to form a current loop.

As shown in connection with fig. 2, 5, 6 and 7, a first aspect of the present application proposes a battery device 10, in some embodiments of the present application, the battery device 10 includes a case 30, a battery cell 21, a heat exchange assembly 40 and at least one fixing member 50, a receiving chamber 31 is formed inside the case 30, the battery cell 21 is disposed in the receiving chamber 31, the heat exchange assembly 40 is disposed in the receiving chamber 31 and configured to exchange heat with the battery cell 21, the fixing member 50 is connected with the case 30, and the fixing member 50 and the case 30 clamp-fix the heat exchange assembly 40 together.

Specifically, the inside of the case 30 is formed with a receiving chamber 31, one end of the receiving chamber 31 is formed with an opening, and the battery cell 21 and other components can be mounted in the receiving chamber 31 through the opening. The battery cells 21 are disposed in the accommodating cavity 31, and the number of the battery cells 21 may be plural, and the plurality of battery cells 21 may be connected in series, parallel or mixed with each other to form the battery cell assembly 20. The heat exchange assembly 40 is disposed in the accommodating cavity 31, and the heat exchange assembly 40 may include a heat exchange plate or a heat exchange tube, and for convenience of description, the present application is only illustrated by taking the heat exchange assembly 40 including a heat exchange plate as an example. The heat exchange assembly 40 is provided at one side of the battery cell 21 and configured to exchange heat with the battery cell 21, thereby adjusting the temperature of the battery cell 21 and improving the operation performance of the battery cell 21. The securing member 50 can be coupled to the housing 30, including a removable connection or a fixed connection. Wherein, the detachable connection comprises a clamping connection or a bolt connection. The fixed connection includes welding or bonding. When the battery device 10 is assembled, the heat exchange assembly 40 can be first arranged in the accommodating cavity 31, then the fixing piece 50 is connected with the box body 30, and the heat exchange assembly 40 is clamped between the fixing piece 50 and the box body 30, so that the heat exchange assembly 40 is assembled in the accommodating cavity 31 and fixed.

According to the battery device 10, the fixing piece 50 and the box body 30 clamp and fix the heat exchange component 40 together, so that the heat exchange component 40 is fixed in the accommodating cavity 31 of the box body 30 and can exchange heat with the battery unit 21, and the temperature of the battery unit 21 is regulated.

As shown in fig. 2, 5, 6 and 7, in some embodiments of the present application, the case 30 includes a support plate 32 and a plurality of side plates 33 provided at outer edges of the support plate 32, the support plate 32 and the plurality of side plates 33 surround to form the receiving chamber 31, the fixing member 50 is connected to the support plate 32 and/or the side plates 33, and the heat exchange assembly 40 is interposed between the support plate 32 and the fixing member 50.

Specifically, the plurality of side plates 33 are respectively disposed at the outer edges of the support plate 32, and are sequentially connected end to end, so that the support plate 32 and the plurality of side plates 33 surround to form the accommodating cavity 31, and the other end of the accommodating cavity 31 opposite to the support plate 32 forms an opening. The support plate 32 may be a bottom plate of the case 30 and disposed below the battery cell 21, or the support plate 32 may be a top plate of the case 30 and disposed above the battery cell 21, according to the installation requirement of the case 30. For convenience of description, the embodiment of the present application will be described by taking the support plate 32 as an example of the bottom plate of the case 30. Optionally, the case 30 further includes a top plate (not shown) disposed at a first end of the case 30 facing away from the support plate 32 and connected to the side plate 33, so that when the battery cells 21 and other components are mounted in the receiving chamber 31, the top plate covers the opening of the receiving chamber 31 and seals the opening.

The heat exchange assembly 40 is provided at a side of the support plate 32 facing the battery cells 21, and exchanges heat with the battery cells 21 in a direction perpendicular to the support plate 32. The fixing member 50 may be connected to the support plate 32 and/or the side plate 33 according to actual installation requirements, and the heat exchange assembly 40 is clamped between the support plate 32 and the fixing member after connection.

Through with the heat exchange assembly 40 clamp locate between backup pad 32 and the mounting 50, the heat exchange assembly 40 can locate one side of battery cell 21 along the direction of perpendicular to backup pad 32 to reduce the space that heat exchange assembly 40 occupy along the direction of being on a parallel with backup pad 32, so that set up more battery cell 21 in holding chamber 31, and then improve battery device 10's energy storage.

As shown in fig. 2, 5, 6 and 7, in some embodiments of the present application, the fixing member 50 includes first and second expansion beams 51 and 52 disposed at intervals along a first direction X, in which the first and second expansion beams 51 and 52 are disposed in the receiving chamber 31, one end of the heat exchange assembly 40 is interposed between the first expansion beam 51 and the support plate 32, and the other end of the heat exchange assembly 40 is interposed between the second expansion beam 52 and the support plate 32, and the first direction X is one of a length direction and a width direction of the battery device 10.

The battery device 10 includes a length direction, a width direction, and a height direction. The height direction is the direction in which the battery cells 21 face the support plate 32. The length direction and the width direction are perpendicular to the height direction, respectively, and the dimension of the battery device 10 in the length direction is greater than the dimension in the width direction, and for convenience of description, the embodiment of the application will be described by taking the first direction X as the length direction of the battery device 10 and the second direction as the width direction of the battery device 10 as an example.

Specifically, the first and second expansion beams 51 and 52 are disposed at intervals in the first direction X in the accommodating chamber 31, and the battery cell 21 is disposed between the first and second expansion beams 51 and 52. When the case 30 is deformed in the first direction X, the first expansion beam 51 and the second expansion beam 52 can effectively protect the battery cell 21, so that the case 30 deformed in the first direction X can be reduced to press the battery cell 21. By connecting the first expansion beam 51 and the second expansion beam 52 with the case 30, both ends of the heat exchange assembly 40 in the first direction X can be clamped and fixed without adding an additional connection structure, and the installation of the heat exchange assembly 40 is facilitated. Alternatively, the first and second expansion beams 51 and 52 may be welded, snapped, glued or bolted to the tank 30.

By sandwiching one end of the heat exchange assembly 40 along the first direction X between the first expansion beam 51 and the support plate 32 and sandwiching the other end of the heat exchange assembly 40 along the first direction X between the second expansion beam 52 and the support plate 32, both ends of the heat exchange assembly 40 can be fixed along the first direction X, and thus the fixing reliability of the heat exchange assembly 40 in the box 30 can be improved. Meanwhile, the first and second expansion beams 51 and 52 are conventional structures within the case 30, respectively, so that the heat exchange assembly 40 can be fixed without additionally adding a fixing structure, thereby reducing costs.

As shown in fig. 2, 5, 6 and 7, in some embodiments of the present application, the fixing member 50 further includes a first liner 53 and a second liner 54 disposed at intervals along a second direction Y, the first liner 53 and the second liner 54 being disposed in the accommodating cavity 31, one end of the heat exchange assembly 40 being interposed between the first liner 53 and the support plate 32 along the second direction Y, the other end of the heat exchange assembly 40 being interposed between the second liner 54 and the support plate 32, the second direction Y being perpendicular to the first direction X, and the second direction Y being the other of the length direction and the width direction of the battery device 10.

Specifically, the first and second liners 53 and 54 are disposed at intervals in the second direction Y in the accommodation chamber 31, and the battery cell 21 is disposed between the first and second liners 53 and 54. When the case 30 is deformed in the second direction Y, the first liner 53 and the second liner 54 can effectively protect the battery cell 21, and the deformed case 30 is reduced to press the battery cell 21. By connecting the first and second liners 53 and 54 to the case 30, both ends of the heat exchanging assembly 40 in the second direction Y can be clamped and fixed without adding an additional connection structure, and the installation of the heat exchanging assembly 40 is facilitated. Alternatively, the first liner 53 and the second liner 54 may be welded, snapped, glued, or bolted to the case 30.

Through with the one end clamp of heat exchange assembly 40 along second direction Y locate between first welt 53 and the backup pad 32, with the other end clamp of heat exchange assembly 40 along second direction Y locate between second welt 54 and the backup pad 32 to can fix the both ends of heat exchange assembly 40 along second direction Y, and then improve the fixed reliability of heat exchange assembly 40 in box 30. Meanwhile, the first and second liners 53 and 54 are respectively of a conventional structure in the case 30, so that the heat exchange assembly 40 can be fixed without additionally adding a fixing structure, thereby reducing costs. As shown in connection with fig. 5, 8, and 9, in some embodiments of the application, the heat exchange assembly 40 includes a first surface 4111 facing the fixture 50 and a second surface 4121 facing the support plate 32, wherein;

A structural adhesive (not shown) is disposed between the first surface 4111 and the fixing member 50, and/or a structural adhesive is disposed between the second surface 4121 and the support plate 32.

Specifically, the heat exchange assembly 40 has oppositely disposed first and second surfaces 4111, 4111 disposed toward the battery cell 21 and the mount 50, and 4121 disposed toward the support plate 32. The heat exchange assembly 40 is typically a metal member so that the heat exchange assembly 40 releases heat and exchanges heat with the battery cells 21. The fixing member 50 includes a first expansion beam 51, a second expansion beam 52, a first lining plate 53 and a second lining plate 54, and the fixing member 50 is also a metal member for improving its supporting performance and deformation resistance. Because the electrochemical corrosion phenomenon easily occurs when the metal pieces of different materials are contacted, the structural adhesive is arranged between the first surface 4111 and the fixing piece 50, and the electrochemical corrosion phenomenon between the heat exchange assembly 40 and the fixing piece 50 can be reduced due to the existence of the structural adhesive, so that the damage of the heat exchange assembly 40 and the fixing piece 50 is reduced. Meanwhile, the existence of the structural adhesive can also improve the connection strength of the heat exchange assembly 40 and the fixing piece 50. Fig. 9 is an enlarged view of the heat exchange assembly 40 sandwiched between the first liner 53 and the support plate 32. The structural adhesive is disposed between the first surface 4111 of the heat exchange assembly 40 and the first liner 53, and the structural adhesive is disposed between the second surface 4121 of the heat exchange assembly 40 and the support plate 32.

Alternatively, the support plate 32 may be a metal member, and when the support plate 32 is in direct contact with the heat exchange assembly 40, electrochemical corrosion is also easy to occur, so that structural adhesive is disposed between the second surface 4121 and the support plate 32, and due to the existence of the structural adhesive, electrochemical corrosion between the heat exchange assembly 40 and the support plate 32 can be reduced, thereby reducing damage to the heat exchange assembly 40 and the support plate 32. At the same time, the presence of the structural adhesive also promotes the strength of the connection of the heat exchange assembly 40 to the support plate 32.

Alternatively, the heat exchange assembly 40 may be a heat exchange plate 41, where the heat exchange plate 41 includes a first plate portion 411 and a second plate portion 412 connected to each other, and a heat exchange channel 4124 is formed between the first plate portion 411 and the second plate portion 412, and the heat exchange channel 4124 is used for circulating a heat exchange medium. The heat exchange medium can adjust the temperature of the heat exchange plate 41 during the flowing process in the heat exchange flow passage 4124, thereby exchanging heat with the battery cell 21 through the heat exchange plate 41 and adjusting the temperature of the battery cell 21. Wherein. The first plate 411 may be disposed on a side of the second plate 412 facing the battery cell 21, and a surface of the first plate 411 facing the battery cell 21 is a first surface 4111. The surface of the second plate portion 412 facing the support plate 32 is a second surface 4121.

Alternatively, the heat exchange assembly 40 may be an aluminum alloy member and the securing member and support plate 32 may be steel members.

As shown in connection with fig. 5, 8 and 9, in some embodiments of the present application, the heat exchange assembly 40 includes a heat exchange plate 41, and an edge of the heat exchange plate 41 is sandwiched between the support plate 32 and the fixing member 50.

Specifically, the heat exchange plate 41 has a substantially square plate structure, including a central region and an edge surrounding the central region, where the edge of the heat exchange plate 41 is clamped between the support plate 32 and the fixing member, so as to fix the heat exchange plate 41. And the central region of the heat exchange plate 41 is disposed opposite to the battery cells 21, and a heat exchange flow passage 4124 is formed inside the central region. Since the fixing member 50 includes the first expansion beam 51, the second expansion beam 52, the first backing plate 53 and the second backing plate 54 in some embodiments of the present application, the first expansion beam 51, the second expansion beam 52, the first backing plate 53 and the second backing plate 54 are disposed around the outer circumference of the battery cell 21 and opposite to the edge of the heat exchange plate 41, the edge of the heat exchange plate 41 may be interposed between the support plate 32 and the fixing member.

Optionally, the heat exchange plate 41 has a first surface 4111 and a second surface 4121 opposite to each other, and the positions of the edges of the first surface 4111 and the second surface 4121 are respectively planar, so as to facilitate sandwiching the edges of the heat exchange plate 41 between the support plate 32 and the fixing member.

The heat exchange plate 41 has a larger surface area than the heat exchange tube, so that the heat exchange efficiency of the heat exchange assembly 40 and the battery cells 21 is improved, and meanwhile, the edge of the heat exchange plate 41 is clamped between the support plate 32 and the fixing piece 50, namely, the fixing piece 50 and the edge of the heat exchange plate 41 are correspondingly arranged, so that the occupied space of the fixing piece 50 in the accommodating cavity 31 is reduced, more battery cells 21 are arranged in the accommodating cavity 31, and the energy storage capacity of the battery device 10 is improved.

Referring to fig. 5 to 13, in some embodiments of the present application, a space 38 is formed between a portion of the heat exchange plate 41 and the support plate 32, and an electrophoresis channel 34 communicating with the space 38 is formed between an edge of the heat exchange plate 41 and the support plate 32.

Specifically, the central region of the heat exchange plate 41 corresponding to the battery cell 21 may be spaced apart from the support plate 32, and a spacing space 38 is formed between the heat exchange plate 41 and the support plate 32. Due to the existence of the spacing space 38, the support plate 32 cannot directly act on the heat exchange plate 41 after being subjected to impact deformation, so that deformation damage caused by the extrusion of the deformed support plate 32 on the heat exchange plate 41 is reduced. Meanwhile, the part of the heat exchange plate 41 is arranged at intervals with the support plate 32, and electrochemical corrosion between the heat exchange plate 41 and the support plate 32 can be reduced.

In order to reduce corrosion of the surface of the heat exchange plate 41 facing the support plate 32 and the surface of the support plate 32 facing the heat exchange plate 41, an electrophoresis channel 34 is formed between the edge of the heat exchange plate 41 and the support plate 32, and the electrophoresis channel 34 is communicated with the space 38, so that electrolyte can be introduced into the space 38 through the electrophoresis channel 34, and the surface of the heat exchange plate 41 facing the support plate 32 and the surface of the support plate 32 facing the heat exchange plate 41 form a coating under the action of the electrolyte, thereby improving corrosion resistance of the heat exchange plate 41 and the support plate 32. Optionally, an electrophoresis channel 34 is formed between one side edge of the square structure of the heat exchange plate 41 and the support plate 32, or an electrophoresis channel 34 is formed between multiple side edges of the square structure of the heat exchange plate 41 and the support plate 32, respectively. Alternatively, the square structure of the heat exchange plate 41 has a planar structure at its edges, a recess is formed on a portion of the surface of the support plate 32 facing the heat exchange plate 41, and an electrophoresis channel 34 is formed between the recess and the heat exchange plate 41.

By forming the space 38 between the heat exchange plate 41 and the support plate 32 and forming the electrophoresis channel 34 communicating with the space 38 between the edge of the heat exchange plate 41 and the support plate 32, after the heat exchange plate 41 is assembled with the case 30, the electrophoresis liquid can be injected into the space 38 between the heat exchange plate 41 and the support plate 32 through the electrophoresis channel 34, thereby forming an electrophoresis coating on the surfaces of the heat exchange plate 41 and the support plate 32, and further improving the corrosion resistance of the heat exchange plate 41 and the support plate 32.

As shown in fig. 5 to 13, in some embodiments of the present application, the expansion paste 60 is provided in the space 38, and the curing temperature of the expansion paste 60 is greater than 150 ° and less than 220 °, and the heat exchange plate 41 is connected to the support plate 32 through the expansion paste 60.

Specifically, the swelling glue 60 may be a high-temperature swelling glue, and the curing temperature is 150 ° or more and 220 ° or less. Alternatively, the curing temperature of the swelling glue 60 may be any one of 150 °..180 °.200 °.220 °. The high-temperature expansion adhesive combines high-temperature tolerance and thermal expansion characteristics, and can spontaneously expand when the high-temperature expansion adhesive encounters high temperature or high heat, so that the high-temperature expansion adhesive can keep good bonding performance and corrosion resistance in a high-temperature environment. Alternatively, the swelling glue 60 may be an epoxy swelling glue.

The heat exchange plate 41 may be adhered to the support plate 32 by the expansion glue 60, and after the expansion glue 60 is expanded by heating, a part of the heat exchange plate 41 is spaced from the support plate 32. Meanwhile, since the expansion glue 60 has high temperature resistance, when the temperature of the expansion glue 60 is raised, deformation phenomenon is not easy to occur, so that the phenomenon that the heat exchange plate 41 is jacked up towards the direction of the support plate 32 and is abutted against the support plate 32 is reduced. Wherein the temperature increase of the expansion glue 60 includes a temperature increase during the heat release of the heat exchange plate 41 or a temperature increase when the electrophoresis phenomenon occurs in the space 38.

Through setting up the expansion glue 60, be used for supporting heat exchange plate 41 after the expansion glue 60 is heated and expands to make heat exchange plate 41 and backup pad 32 interval setting, reduce heat exchange plate 41 and be close to backup pad 32 after being heated and warp, simultaneously after backup pad 32 receives outside impact deformation, the backup pad 32 after the deformation can't directly extrude heat exchange plate 41, thereby reduce the damage of heat exchange plate 41. Meanwhile, setting the curing temperature of the expansion glue 60 to 150 ° or more and 220 ° or less can reduce the deformation of the expansion glue 60 in the case where the heat exchange plate 41 releases heat, thereby improving the supporting strength of the expansion glue 60.

As shown in fig. 5 to 13, in some embodiments of the present application, the heat exchange plate 41 includes a first plate portion 411 and a second plate portion 412 connected to each other, the second plate portion 412 is disposed on a side of the first plate portion 411 facing the support plate 32, the second plate portion 412 is provided with a first portion 4122 protruding away from the first plate portion 411 and a second portion 4123 attached to the first plate portion 411, the first portion 4122 and the first plate portion 411 are formed with heat exchange channels 4124, and the second portion 4123 is connected to the expansion glue 60 facing the plate surface of the support plate 32.

Specifically, the heat exchange plate 41 has a substantially square plate-like structure, and includes a first plate portion 411 and a second plate portion 412 connected to each other, and a heat exchange flow passage 4124 is formed between the first plate portion 411 and the second plate portion 412. The heat exchange plate further comprises a water inlet end 416 and a water outlet end 417, wherein the water inlet end 416 and the water outlet end 417 are respectively communicated with the heat exchange flow channel 4124, so that heat exchange medium is continuously supplied into the heat exchange flow channel 4124.

Alternatively, the first plate portion 411 and the second plate portion 412 may be welded to each other, such as by brazing, so as to improve sealability between the first plate portion 411 and the second plate portion 412. Wherein the first plate portion 411 is disposed toward the battery cell 21 and the fixing member, and the second plate portion 412 is disposed toward the support plate 32. The second plate portion 412 includes a first portion 4122 and a second portion 4123, the first portion 4122 protrudes in a direction away from the first plate portion 411 and forms a heat exchange flow passage 4124 with the first plate portion 411, and the second portion 4123 is attached to the first plate portion 411 so as to seal the heat exchange flow passage 4124. Wherein the second portion 4123 is connected to the expansion glue 60 toward the plate surface of the support plate 32.

Since the first portion 4122 is protruded in a direction away from the first plate portion 411, the expansion glue 60 is connected with the second portion 4123, and the expansion glue 60 after expansion can reduce the extrusion deformation of the heat exchange flow channel 4124, and at the same time, reduce the space occupied by the expansion glue 60 and the heat exchange plate 41 in a direction perpendicular to the support plate 32 after being bonded, and further reduce the space occupied by the box 30 in a direction perpendicular to the support plate 32.

As shown in fig. 5 to 13, in some embodiments of the present application, at least one side edge of the heat exchange plate 41 is provided with a socket 413 therethrough, the support plate 32 is provided with a socket protrusion 35 disposed corresponding to the socket 413, and the socket protrusion 35 passes through the socket 413 and is welded to the fixing member 50.

Specifically, the insertion holes 413 penetrate the plate surface of the heat exchange plate 41. Wherein the size of the insertion hole 413 is larger than the size of the insertion protrusion 35, so that the insertion protrusion 35 passes through the insertion hole 413 and is welded to the fixing piece 50. Alternatively, the plug hole 413 may sequentially penetrate the first plate portion 411 and the second plate portion 412, or the plug hole 413 may penetrate only the edge of the second plate portion 412 when the edge of the second plate portion 412 exceeds the first plate portion 411. Optionally, a plug hole 413 is penetrated at one side edge of the square structure of the heat exchange plate 41, or plug holes 413 are penetrated at multiple side edges of the square structure of the heat exchange plate 41.

By providing the insertion hole 413, the insertion protrusion 35 on the support plate 32 can pass through the insertion hole 413 and be welded with the fixing member 50, thereby connecting the support plate 32 and the fixing member 50 and clamping and fixing the heat exchange plate 41 together by the support plate 32 and the fixing member 50. Meanwhile, the heat exchange plate 41 can be positioned and mounted on the support plate 32 by inserting the inserting protrusions 35 into the inserting holes 413, so that the position deviation of the heat exchange plate 41 in the mounting process is reduced.

Referring to fig. 5 to 14, in some embodiments of the present application, a portion of the heat exchange plate 41 corresponding to the battery cell 21 is provided with a first mounting hole 414 therethrough, the fixing member 50 further includes a fixing piece 55, a portion of the fixing piece 55 is disposed on a side of the heat exchange plate 41 facing the battery cell 21 and abuts against the heat exchange plate 41, and another portion of the fixing piece 55 passes through the first mounting hole 414 and is connected to the support plate 32.

Specifically, a first mounting hole 414 is formed in a central region of the heat exchange plate 41 corresponding to the battery cell 21 in a penetrating manner, a part of the fixing plates 55 are arranged on one side of the heat exchange plate 41 facing the battery cell 21 and are abutted against the heat exchange plate 41, and the other part of the fixing plates 55 pass through the first mounting hole 414 and are connected with the support plate 32, so that the heat exchange plate 41 is clamped and fixed together through the fixing plates 55 and the support plate 32. Optionally, the fixing piece 55 is welded or adhered to the support plate 32. Alternatively, in order to facilitate the connection of the support plate 32 with the fixing piece 55, the portion of the support plate 32 for connection with the fixing piece 55 protrudes toward the heat exchange plate 41 and forms the connection protrusion 36, and the fixing piece 55 is connected with the connection protrusion 36 after passing through the first mounting hole 414, so that the size of the fixing piece 55 inserted into the first mounting hole 414 can be reduced. Alternatively, the number of the fixing pieces 55 and the first mounting holes 414 may be plural, respectively, and the number of the connection protrusions 36 may be plural and disposed in one-to-one correspondence with the plurality of first mounting holes 414, so as to be connected with the plurality of connection protrusions 36, respectively, through the plurality of fixing pieces 55 and serve to clamp and fix the heat exchange plate 41.

By providing the fixing piece 55 and sandwiching the heat exchange plate 41 together with the support plate 32 through the fixing piece 55, the fixing effect on the heat exchange plate 41 can be improved, and the deformation of the heat exchange plate 41 after being heated can be reduced.

As shown in connection with fig. 5 to 14, in some embodiments of the present application, a portion of the heat exchange plate 41 is recessed toward a direction away from the battery cells 21 and formed with a mounting groove, and a portion of the fixing plate 55 is provided in the mounting groove.

Specifically, a portion of the heat exchange plate 41 is recessed toward a direction away from the battery cells 21, i.e., toward the support plate 32, so that a mounting groove is formed, and a first mounting hole 414 is formed through the bottom of the mounting groove. The fixing piece 55 may be disposed in the mounting groove and abutted against the bottom of the mounting groove, and compared with directly disposing the fixing piece 55 on the surface of the heat exchange plate 41 facing the battery cell 21, the spacing between the fixing piece 55 and the battery cell 21 may be increased, thereby reducing the occurrence of the abutment phenomenon between the fixing piece 55 and the battery cell 21. Alternatively, the fixing piece 55 does not protrude beyond the plate surface of the heat exchange plate 41 toward one end of the battery cell 21.

By providing the fixing piece 55 in the mounting groove, the protrusion of the fixing piece 55 from the surface of the heat exchange plate 41 facing the battery cell 21 can be reduced, and the occurrence of the contact phenomenon between the fixing piece 55 and the battery cell 21 can be reduced.

As shown in connection with fig. 5 to 13, in some embodiments of the present application, the battery device 10 further includes a support beam 70, where the support beam 70 is disposed on a side of the heat exchange assembly 40 facing the battery cell 21, and sandwiches the heat exchange assembly 40 with the support plate 32.

Specifically, the support beam 70 is disposed corresponding to the central region of the heat exchange plate 41 and is connected to the inner wall of the case 30. Alternatively, the support beam 70 extends in the second direction Y, thereby improving the impact deformation resistance of the case 30 in the second direction Y. By connecting the support beam 70 with the case 30, the central region of the heat exchange plate 41 can be clamped and fixed without adding an additional connection structure, while reducing deformation of the heat exchange plate 41 after being heated. Alternatively, in order to facilitate the clamping and fixing of the heat exchange plate 41 by the support beam 70 and the support plate 32 together, the support plate 32 is provided with a support protrusion 37 protruding toward the heat exchange plate 41, and the support protrusion 37 abuts against the second surface 4121 of the heat exchange plate 41. Alternatively, the support beam 70 may be welded, snapped, glued, or bolted to the housing 30.

Alternatively, the battery device 10 may be connected to an external support member through a support beam 70, wherein the support beam 70 is provided with a mounting member 71, such as a bolt mounting seat, the heat exchange plate 41 is provided with a second mounting hole 415 corresponding to the mounting member 71, and the support protrusion 37 is provided with a third mounting hole (not shown) therethrough. When the battery device 10 is mounted to the vehicle frame, the battery device 10 may be connected and fixed to the vehicle frame by using the connection bolts sequentially passing through the third mounting holes, the second mounting holes 415, and the mounting members 71, and being connected to the vehicle frame.

By sandwiching the heat exchange assembly 40 between the support beam 70 and the support plate 32, the fixing effect on the heat exchange assembly 40 can be improved, and deformation of the heat exchange assembly 40 after being heated can be reduced.

In some embodiments of the present application, the exterior of the case 30 is further provided with a mount 80, and the battery device 10 may be connected to an external support through the mount 80.

Specifically, the mounting members 80 are disposed outside the case 30, and the mounting members 80 are disposed on two side plates 33 disposed opposite to each other on both sides of the case 30, so that the mounting members 80 on both sides of the case 30 are connected to the external support member.

As shown in connection with fig. 2, 5, 7 and 8, in some embodiments of the present application, the surface of the heat exchange assembly 40 facing the battery cell 21 is provided with an insulating layer (not shown in the figures).

Specifically, after the heat exchange assembly 40 is fixed in the accommodating cavity 31, the surface of the heat exchange plate 41 facing the battery cell 21 may be subjected to powder spraying treatment, and an insulating layer may be formed on the surface of the heat exchange plate 41 facing the battery cell 21. Optionally, the insulating layer comprises an epoxy layer.

By arranging the insulating layer on the surface of the heat exchange assembly 40, which faces the battery cell 21, the corrosion resistance of the heat exchange assembly 40 can be improved, and when the heat exchange assembly 40 contacts with the surface of the battery cell 21, the short circuit phenomenon between the heat exchange assembly 40 and the battery cell 21 can be reduced due to the existence of the insulating layer.

As shown in connection with fig. 2, 5, 7 and 8, in some embodiments of the application, the outer surface of the case 30 is provided with an impact resistant layer (not shown).

Specifically, an impact resistant layer may be provided on the outer surfaces of the support plate 32 and the side plate 33 facing away from the receiving chamber 31, thereby improving the deformation impact resistance of the case 30. Optionally, the impact resistant layer comprises a PVC (Poly Vinyl Chloride ) layer.

By providing the outer surface of the case 30 with an impact-resistant layer, the case 30 can be reduced from being deformed under the action of external impact, and the deformed case 30 can be reduced from being extruded to damage the heat exchange plate 41 and the battery cells 21.

As shown in fig. 1, a second aspect of the present application proposes a powered device comprising a battery arrangement 10 of any of the above.

Because the electric equipment in the present application has the same technical features as the battery device 10 in any of the above embodiments, the same technical effects can be achieved, and the description thereof will not be repeated here.

As shown in fig. 1, in some embodiments of the present application, the electric device may be a vehicle 1, where the vehicle 1 includes a battery device 10 according to any of the above embodiments, and the battery device 10 is used to provide electric energy for the vehicle 1 and is used to drive the vehicle 1 to walk.

As shown in fig. 1, in some embodiments of the application, a vehicle 1 includes a battery device 10, the battery device 10 being configured to provide electrical energy to the vehicle 1.

As shown in fig. 2 and 5 to 7, the battery device 10 includes a case 30, a battery cell 21, a heat exchange assembly 40, and at least one fixing member 50, wherein a receiving chamber 31 is formed inside the case 30, the battery cell 21 is disposed in the receiving chamber 31, the heat exchange assembly 40 is disposed in the receiving chamber 31 and configured to exchange heat with the battery cell 21, the fixing member 50 is connected to the case 30, and the fixing member 50 and the case 30 clamp and fix the heat exchange assembly 40 together.

Wherein, the box 30 includes a support plate 32 and a plurality of side plates 33 at outer edges of the support plate 32, the support plate 32 and the plurality of side plates 33 surround to form the accommodating chamber 31, and outer surfaces of the support plate 32 and the plurality of side plates 33 are respectively provided with an impact resistant layer. The fixing member 50 is connected to the support plate 32, and the heat exchange assembly 40 is sandwiched between the support plate 32 and the fixing member 50. The fixing member 50 includes first and second expansion beams 51 and 52 disposed at intervals in the first direction X, the first and second expansion beams 51 and 52 being disposed in the accommodating chamber 31. One end of the heat exchange assembly 40 is sandwiched between the first expansion beam 51 and the support plate 32 along the first direction X, which is the longitudinal direction of the battery device 10, and the other end of the heat exchange assembly 40 is sandwiched between the second expansion beam 52 and the support plate 32. The fixing member 50 further includes a first liner plate 53 and a second liner plate 54 disposed at intervals along the second direction Y, and the first liner plate 53 and the second liner plate 54 are disposed in the accommodating chamber 31. One end of the heat exchange assembly 40 is sandwiched between the first liner plate 53 and the support plate 32 along the second direction Y, and the other end of the heat exchange assembly 40 is sandwiched between the second liner plate 54 and the support plate 32, wherein the second direction Y is the width direction of the battery device 10.

As shown in fig. 5 to 14, the heat exchange assembly 40 includes a first surface 4111 facing the fixing member 50 and a second surface 4121 facing the supporting plate 32, wherein a structural adhesive is disposed between the first surface 4111 and any one of the first expansion beam 51, the second expansion beam 52, the first liner 53 and the second liner 54, and a structural adhesive is disposed between the second surface 4121 and the supporting plate 32. The first surface 4111 of the heat exchange assembly 40 facing the battery cell 21 is further provided with an insulating layer. The heat exchange assembly 40 includes a heat exchange plate 41, and an edge of the heat exchange plate 41 is sandwiched between the support plate 32 and the fixing member 50. A space 38 is formed between a portion of the heat exchange plate 41 and the support plate 32, and an electrophoresis channel 34 communicating with the space 38 is formed between an edge of the heat exchange plate 41 and the support plate 32. An expansion glue 60 is arranged in the interval space 38, and the heat exchange plate 41 is connected with the support plate 32 through the expansion glue 60. The heat exchange plate 41 includes a first plate portion 411 and a second plate portion 412 that are connected, the second plate portion 412 is disposed on a side of the first plate portion 411 facing the support plate 32, the second plate portion 412 is provided with a first portion 4122 protruding away from the first plate portion 411 and a second portion 4123 attached to the first plate portion 411, the first portion 4122 and the first plate portion 411 are formed with heat exchange channels 4124, and a surface of the second portion 4123 facing the support plate 32 is connected with the expansion glue 60. At least one side edge of the heat exchange plate 41 is provided with a plug hole 413 in a penetrating manner, the support plate 32 is provided with a plug protrusion 35 corresponding to the plug hole 413, and the plug protrusion 35 penetrates through the plug hole 413 and is welded with the fixing piece 50. Part of the heat exchange plate 41 is recessed toward a direction away from the battery cells 21 and formed with a mounting groove through which a first mounting hole 414 is provided. The fixing member 50 further includes a fixing piece 55, a portion of the fixing piece 55 is disposed in the mounting groove and abuts against the heat exchange plate 41, and another portion of the fixing piece 55 passes through the first mounting hole 414 and is connected to the support plate 32.

As shown in fig. 5 to 8, the battery device 10 further includes a support beam 70, where the support beam 70 is disposed on a side of the heat exchange assembly 40 facing the battery cell 21, and sandwiches the heat exchange assembly 40 with the support plate 32.

It should be noted that the foregoing embodiments are merely illustrative of the technical solutions of the present application and not limiting, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some or all of the technical features thereof, and that such modifications or substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and are intended to be encompassed in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. It is intended that the application not be limited to the particular embodiments disclosed herein, but that the application will include all embodiments falling within the scope of the appended claims.

Claims

1. A battery device, characterized by comprising:

the box body is internally provided with a containing cavity;

the battery monomer is arranged in the accommodating cavity;

The heat exchange assembly is arranged in the accommodating cavity and is configured to exchange heat with the battery cell;

the fixing piece is connected with the box body, and the fixing piece and the box body are clamped together to fix the heat exchange assembly.

2. The battery device according to claim 1, wherein the case includes a support plate and a plurality of side plates provided at outer edges of the support plate, the support plate and the plurality of side plates surround to form the accommodating chamber, the fixing member is connected with the support plate and/or the side plates, and the heat exchange assembly is interposed between the support plate and the fixing member.

3. The battery device according to claim 2, wherein the fixing member includes a first expansion beam and a second expansion beam disposed at intervals along a first direction, the first expansion beam and the second expansion beam being disposed in the accommodating chamber, one end of the heat exchange assembly being interposed between the first expansion beam and the support plate along the first direction, the other end of the heat exchange assembly being interposed between the second expansion beam and the support plate, the first direction being one of a length direction and a width direction of the battery device.

4. The battery device of claim 3, wherein the fixing member further comprises a first lining plate and a second lining plate which are arranged at intervals along a second direction, the first lining plate and the second lining plate are arranged in the accommodating cavity, one end of the heat exchange assembly is clamped between the first lining plate and the supporting plate along the second direction, the other end of the heat exchange assembly is clamped between the second lining plate and the supporting plate, and the second direction is mutually perpendicular to the first direction.

5. The battery device of claim 2, wherein the heat exchange assembly includes a first surface facing the fixture and a second surface facing the support plate, wherein;

6. The battery device of claim 2, wherein the heat exchange assembly includes a heat exchange plate, an edge of the heat exchange plate being sandwiched between the support plate and the fixture.

7. The battery device according to claim 6, wherein a space is formed between a part of the heat exchange plate and the support plate, and an electrophoresis channel communicating with the space is formed between an edge of the heat exchange plate and the support plate.

8. The battery device according to claim 7, wherein an expansion glue is provided in the space, a curing temperature of the expansion glue is 150 ° or more and 220 ° or less, and the heat exchange plate is connected with the support plate through the expansion glue.

9. The battery device according to claim 8, wherein the heat exchange plate includes a first plate portion and a second plate portion connected to each other, the second plate portion is provided on a side of the first plate portion facing the support plate, the second plate portion is provided with a first portion protruding away from the first plate portion and a second portion attached to the first plate portion, the first portion and the first plate portion are formed with heat exchange flow passages, and a surface of the second portion facing the support plate is connected with the expansion paste.

10. The battery device according to claim 6, wherein at least one side edge of the heat exchange plate is provided with a plug hole in a penetrating manner, the support plate is provided with a plug protrusion corresponding to the plug hole, and the plug protrusion penetrates through the plug hole and is welded with the fixing member.

11. The battery device according to claim 6, wherein a portion of the heat exchange plate corresponding to the battery cell is provided with a first mounting hole therethrough, the fixing member further comprises a fixing piece, a portion of the fixing piece is provided on a side of the heat exchange plate facing the battery cell and is abutted against the heat exchange plate, and another portion of the fixing piece passes through the first mounting hole and is connected with the support plate.

12. The battery device according to claim 11, wherein a part of the heat exchange plate is recessed toward a direction away from the battery cell and formed with a mounting groove, and a part of the fixing piece is provided in the mounting groove.

13. The battery device according to any one of claims 2 to 12, further comprising a support beam provided on a side of the heat exchange assembly facing the battery cell, and sandwiching the heat exchange assembly together with the support plate.

14. The battery device according to any one of claims 1 to 12, wherein a surface of the heat exchange assembly facing the battery cell is provided with an insulating layer.

15. The battery device according to any one of claims 1 to 12, wherein an outer surface of the case is provided with an impact-resistant layer.

16. A powered device comprising a battery arrangement according to any one of claims 1 to 15.