Battery pack and electric equipment

Abstract

The invention provides a battery pack and electric equipment, and relates to the technical field of batteries, and the battery pack comprises a tray assembly, a cover body and a battery cell. The tray assembly is provided with an opening cavity, and the battery cell is located in the opening cavity. The cover body is arranged on the tray assembly in a covering mode to seal the opening cavity. The battery cell is provided with at least one first connecting part, at least one of the tray assembly and the cover body is provided with at least one second connecting part, and the second connecting part and the first connecting part are correspondingly and detachably connected so as to limit the movement of the battery cell relative to the tray assembly or the cover body. According to the battery pack provided by the embodiment of the invention, the tray assembly or the cover body and the battery cell can be connected and fixed through the second connecting part and the first connecting part, the battery cell and the tray assembly or the cover body can be separated by releasing the connection between the second connecting part and the first connecting part when the battery pack needs to be disassembled, the battery pack is easy to disassemble and assemble, and maintenance and subsequent echelon utilization are facilitated.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Art

[0002] As a power source, battery packs are widely used in new energy vehicles or other electrical equipment.

[0003] A battery pack is usually formed by connecting multiple battery cells in series and in parallel and then encapsulating them through a tray and a sealing cover. In the related art, the battery cells and the sealing cover or the tray are bonded to achieve fixation or heat conduction.

[0004] However, the above-mentioned bonding method is difficult to disassemble, which is not conducive to maintenance and subsequent cascade utilization. Summary of the invention

[0005] Based on this, the present application provides a battery pack and electrical equipment to solve the problem that the bonding method used in the existing battery pack during packaging is difficult to disassemble, which is not conducive to maintenance and subsequent cascade utilization.

[0006] In a first aspect, the present application provides a battery pack, comprising: a tray assembly, a cover body, and a battery cell;

[0007] An open cavity is provided on the tray assembly, and the battery cell is located in the open cavity;

[0008] The cover body is arranged on the tray assembly to close the opening;

[0009] At least one first connection portion is provided on the battery cell, and at least one of the tray assembly and the cover body is provided with at least one second connection portion, and the second connection portion is detachably connected to the first connection portion to limit the movement of the battery cell relative to the tray assembly or the cover body.

[0010] In a possible implementation, the first connection portion is a first plug-in portion, the second connection portion is a second plug-in portion matching the first plug-in portion, and the second plug-in portion is plugged into the first plug-in portion accordingly.

[0011] In a possible implementation, one of the first plug-in portion and the second plug-in portion is a plug-in post, and the other is a plug-in hole matching the plug-in post, and the plug-in post is plugged into the plug-in hole correspondingly.

[0012] In a possible implementation, the first plug-in portion is arranged obliquely relative to the outer side wall of the battery core to form a first angle with the outer side wall of the battery core.

[0013] In a possible implementation manner, the first angle is an acute angle.

[0014] In a possible implementation, the first plug-in portion is located on an outer wall of the battery cell, a plurality of first plug-in portions are arranged at intervals on the outer wall of the battery cell, and the first plug-in portions on the same outer wall have the same inclination direction.

[0015] In a possible implementation, the inclination directions of the opposite first plug-in portions on the battery core are opposite.

[0016] In a possible implementation, the second plug-in portion is located on the battery core, and two ends of the first plug-in portion are connected to two opposite sides of the tray assembly.

[0017] In a possible implementation, the battery cell is in a rectangular shape, and the second plug-in portion is disposed on the battery cell near an angle between two adjacent sides.

[0018] In a possible implementation, a heat conductive member is further included, and at least one of the tray assembly and the cover body is in contact with the battery core through the heat conductive member.

[0019] In a possible implementation, the heat conductive member is a heat conductive silicone sheet, and the heat conductive silicone sheet has a preset compression deformation amount.

[0020] In a possible implementation, a heat preservation member is further included, and the heat preservation member is disposed between the outer wall of at least one battery cell and the inner wall of the tray assembly.

[0021] In a possible implementation, the tray assembly includes a bottom plate and a plurality of side plates, the side plates are connected in sequence and are respectively connected to the same side of the bottom plate to form an open cavity, and the cover body is connected to a side of each side plate away from the bottom plate.

[0022] In a possible implementation, the base plate is a cold plate.

[0023] In a second aspect, the present application further provides an electrical device, including a device body, wherein the device body is provided with any one of the battery packs provided in the first aspect.

[0024] The present application provides a battery pack and an electrical device, the battery pack comprising a tray assembly, a cover body and a battery cell. An opening is provided on the tray assembly, the battery cell is installed in the opening, and the cover body is provided on the tray assembly to close the opening and protect the battery cell. Among them, at least one first connection part is provided on the battery cell, and at least one second connection part is provided on at least one of the tray assembly and the cover body, the second connection part is detachably connected to the first connection part to limit the movement of the battery cell relative to the tray assembly or the cover body. Therefore, in the battery pack provided by the present application, the tray assembly or the cover body and the battery cell can be connected and fixed by the second connection part and the first connection part. When disassembly is required, the battery cell can be separated from the tray assembly or the cover body by releasing the connection between the second connection part and the first connection part. It is easy to disassemble and assemble, which is conducive to maintenance and subsequent cascade utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 An exploded view of a battery pack provided in an embodiment of the present application;

[0027] Figure 2 for Figure 1 Schematic diagram of the installation relationship between the battery cell, the cover body and the tray assembly;

[0028] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0029] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0030] Figure 5 A partially exploded view of another implementation of a battery pack provided in an embodiment of the present application;

[0031] Figure 6 for Figure 5 Partial exploded view of the battery cell.

[0032] Reference numerals:

[0033] 100: tray assembly;

[0034] 101: bottom plate;

[0035] 102: side panel;

[0036] 110: Open mouth;

[0037] 120: second connecting portion;

[0038] 200: cover;

[0039] 300: battery cell;

[0040] 310: first connection portion;

[0041] 400: heat conducting parts;

[0042] 500: Insulation parts. DETAILED DESCRIPTION

[0043] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of methods and devices consistent with some aspects of the present application as detailed in the appended claims.

[0044] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] At present, the battery pack is packaged by a tray and a sealing cover, and the cells are placed in groups in the cavity between the tray and the sealing cover. The sealing cover is fastened to the tray by bolts around it, and the contact surface between the cell and the sealing cover or the tray is bonded and fixed by structural adhesive or thermal conductive adhesive. Its main disadvantages are: 1. It is difficult to disassemble, which is not conducive to maintenance and subsequent cascade utilization (among which, cascade utilization or cascade battery refers to the downgraded use of batteries, that is, new batteries decay after a certain period of use and are insufficient to meet the use requirements of current equipment, but the battery itself is not bad. After a certain degree of repair and adjustment, it can be used on equipment with a lower power requirement, such as energy storage power stations, communication base stations, etc., which can reduce costs.); 2. The bonding quality is related to the flatness of the cell module, the flatness of the tray, and the flatness of the sealing cover. The poor flatness of the components leads to poor bonding quality. Therefore, the dimensional tolerance requirements of the components are high; 3. Too much adhesive increases the weight of the battery pack, which is not conducive to lightweight; 4. Some glues are not environmentally friendly and can easily become the reason for setting restrictions in some regions.

[0046] In view of the above-mentioned problems existing in the prior art, the present application provides a battery pack and an electrical device. The battery pack provided by the present application includes a tray assembly, a cover body and a battery cell. An opening is provided on the tray assembly, the battery cell is installed in the opening, and the cover body is provided on the tray assembly to close the opening and protect the battery cell. Among them, at least one first connection part is provided on the battery cell, and at least one second connection part is provided on at least one of the tray assembly and the cover body, and the second connection part is detachably connected to the first connection part to limit the movement of the battery cell relative to the tray assembly or the cover body. That is, the tray assembly or the cover body can be connected and fixed to the battery cell by the second connection part and the first connection part. When disassembly is required, the connection between the second connection part and the first connection part can be released, and the battery cell can be separated from the tray assembly or the cover body, which is easy to disassemble and assemble, and is conducive to maintenance and subsequent cascade utilization.

[0047] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0048] First, refer to Figure 1-Figure 6 As shown, an embodiment of the present application provides a battery pack, including: a tray assembly 100 , a cover body 200 and a battery cell 300 .

[0049] The tray assembly 100 is provided with an opening 110 , and the battery cell 300 is located in the opening 110 .

[0050] The cover 200 is disposed on the tray assembly 100 to close the opening 110 .

[0051] At least one first connection portion 310 is provided on the battery cell 300, and at least one second connection portion 120 is provided on at least one of the tray assembly 100 and the cover body 200. The second connection portion 120 is detachably connected to the first connection portion 310 to limit the movement of the battery cell 300 relative to the tray assembly 100 or the cover body 200.

[0052] The tray assembly 100 in this embodiment is used to support the battery cells 300 and other components. It can be a shell-shaped, frame-shaped or other structure. The tray assembly 100 has an open cavity 110 inside. The open cavity 110 is roughly rectangular in shape. Therefore, multiple battery cells 300 can be placed side by side in the open cavity 110.

[0053] The cover body 200 in this embodiment is used to close the open cavity 110, which can be a plate-like structure. The cover body 200 can cover the opening of the entire open cavity 110, and the periphery of the cover body 200 and the periphery of the tray assembly 100 can be connected by screwing, snapping, plugging, etc., so as to meet the requirements of detachable connection.

[0054] The battery cell 300 in this embodiment can be a rectangular sheet, plate or block structure. The battery cell 300 can be placed on its side on the tray assembly 100. A first connecting portion 310 is provided on the outer wall of the battery cell 300 facing the tray assembly 100 or the cover body 200. Correspondingly, a second connecting portion 120 is provided on the inner wall of the tray assembly 100 or the cover body 200 facing the battery cell 300. The second connecting portion 120 and the first connecting portion 310 are detachably connected to limit the movement of the battery cell 300 relative to the tray assembly 100 or the cover body 200. The second connecting portion 120 and the first connecting portion 310 can be detachably connected by plug-in connection, snap-on connection, bolt connection, etc.

[0055] Specifically, if Figure 1 As shown, one or more battery cells 300 are installed side by side in the open cavity 110 of the tray assembly 100. The tray assembly 100 and the battery cells 300 can be fixed by correspondingly connecting the second connecting portion 120 with the first connecting portion 310. Then other necessary parts, such as connecting pieces, insulation pads, brackets, wiring, etc., are installed. Finally, the cover body 200 is placed on the tray assembly 100. After the open cavity 110 is encapsulated, the periphery of the cover body 200 is fixed to the periphery of the tray assembly 100.

[0056] It can be understood that, compared with the bonding method between the tray or the sealing cover and the battery cell 300, in the application of the battery pack in this embodiment, the tray assembly 100 or the cover body 200 and the battery cell 300 can be connected and fixed by the second connecting part 120 and the first connecting part 310 to ensure the normal use of the battery cell 300. When disassembly is required, the connection between the second connecting part 120 and the first connecting part 310 is released, and the battery cell 300 can be separated from the tray assembly 100 or the cover body 200, which is easy to disassemble and assemble, and is conducive to maintenance and subsequent cascade utilization.

[0057] Therefore, the battery pack provided in the embodiment of the present application includes a tray assembly 100, a cover body 200 and a battery cell 300. By providing an open cavity 110 on the tray assembly 100, the battery cell 300 is installed in the open cavity 110, and the cover body 200 is covered on the tray assembly 100 to close the open cavity 110 and protect the battery cell. Among them, by providing at least one first connection part 310 on the battery cell 300, and providing at least one second connection part 120 on at least one of the tray assembly 100 and the cover body 200, the second connection part 120 is detachably connected to the first connection part 310 to limit the movement of the battery cell 300 relative to the tray assembly 100 or the cover body 200. That is, the tray assembly 100 or the cover body 200 and the battery cell 300 can be connected and fixed by the second connecting part 120 and the first connecting part 310. When disassembly is required, the connection between the second connecting part 120 and the first connecting part 310 can be released to separate the battery cell 300 from the tray assembly 100 or the cover body 200. This makes disassembly and assembly easy, which is beneficial to maintenance and subsequent recycling.

[0058] In a possible design, the first connecting portion 310 is a first plug-in portion, and the second connecting portion 120 is a second plug-in portion matching the first plug-in portion, and the second plug-in portion is correspondingly plugged with the first plug-in portion.

[0059] In this way, compared with the screw connection, the plug-in connection can meet the requirements of quick disassembly and assembly, and is convenient for disassembly and maintenance.

[0060] Illustratively, in this embodiment, one of the first plug-in portion and the second plug-in portion is a plug-in post, and the other is a plug-in hole matching the plug-in post, and the plug-in post and the plug-in hole are plugged in correspondence.

[0061] In one example, Figure 2-Figure 4 As shown, the first plug-in portion is a plug-in post, and correspondingly, the second plug-in portion is a plug-in hole that matches the plug-in post, thereby achieving corresponding plug-in between the plug-in post and the plug-in hole.

[0062] In another example, not shown in the figure, the first plug-in portion can also be a plug-in hole, and correspondingly, the second plug-in portion is a plug-in column that matches the plug-in hole, so that the plug-in column and the plug-in hole can be plugged in correspondence. The plug-in type, size, position, etc. of the first plug-in portion and the second plug-in portion can be determined according to actual needs, and can be fixed and easily disassembled, and are not specifically limited in this embodiment.

[0063] In some embodiments, the first plug-in portion is disposed obliquely relative to the outer wall of the battery cell 300 to form a first angle θ with the outer wall of the battery cell 300 , and the first angle θ is an acute angle.

[0064] That is, if Figure 2-Figure 4As shown, the first plug-in portion can be a plug-in post, and the plug-in post is not perpendicular to the outer wall of the battery cell 300, but is inclined relative to the outer wall of the battery cell 300 and is in a barb shape. When the plug-in post is located on the outer wall of the battery cell 300, the length of the plug-in post can be 2mm~4mm, and the plug-in post and the outer wall of the battery cell 300 form a first angle θ, and the range of the first angle θ can be 15°~25°.

[0065] In this way, if Figure 2-Figure 4 As shown, after the plug-in post is plugged into the plug-in hole, the battery cell 300 and the tray assembly 100 can be tightened, or the battery cell 300 and the cover 200 can be tightened by cooperating with the inclined plug-in post and the plug-in hole. As long as it is ensured that it does not move along the extension direction of the plug-in post, it is not easy to separate the battery cell 300 from the tray assembly 100 or the cover 200, thereby ensuring firmness.

[0066] It should be noted that, during installation or removal, the plug-in column can be inserted into the plug-in hole or pulled out from the plug-in hole by moving along the extension direction of the plug-in column, which makes installation and removal simple and convenient.

[0067] The specific first angle θ, length, etc. of the first plug-in portion can be determined according to actual needs and are not specifically limited in this embodiment.

[0068] Furthermore, in this embodiment, the first plug-in portion is located on the outer wall of the battery cell 300 , and a plurality of first plug-in portions are arranged at intervals on the outer wall of the battery cell 300 , and the first plug-in portions on the same outer wall have the same inclination direction.

[0069] Specifically, Figure 2-Figure 4 As shown, the first plug-in portion is a plug-in post, which can be arranged on the surface of the battery cell 300 formed by the length and thickness, and multiple plug-in posts can be arranged at intervals along the length direction of the battery cell 300. In this way, the battery cell 300 is tightened between the tray assembly 100 or the cover 200 at various locations, and the force is more balanced.

[0070] The plug-in posts may be connected to the battery cell 300 by integral molding or welding. The specific number, length, spacing, etc. thereof may be determined according to actual needs and are not specifically limited in this embodiment.

[0071] Furthermore, in this embodiment, the inclination directions of the opposite first plug-in portions on the battery cell 300 are opposite.

[0072] That is, the inclination directions of the plug-in posts on the two opposite outer side walls of the battery cell 300 are opposite. In this way, the direction in which the battery cell 300 is removed from the tray assembly 100 is opposite to the direction in which the battery cell 300 is removed from the cover 200, which has a mutual restriction effect, ensuring that the battery cell 300 will not be separated from the tray assembly 100 and the cover 200, and the fastening is better.

[0073] In some other embodiments, the second plug-in portion is located on the battery cell 300 , and two ends of the first plug-in portion are connected to two opposite sides of the tray assembly 100 .

[0074] Specifically, Figure 5 As shown, the second plug-in portion can be a plug-in hole, which is located on the battery cell 300, and the first plug-in portion is a plug-in column, which can be inserted into the plug-in holes on each battery cell 300 in turn, such as inserted along the thickness direction of the battery cell 300, and the two ends of the plug-in column can be fixedly connected to the opposite sides of the tray assembly 100 by plugging, screwing, etc.

[0075] In this way, one or more battery cells 300 can be fixedly connected to the tray assembly 100 through the plug-in column. The specific position and size of the second plug-in portion on the battery cell 300 can be determined according to actual needs and are not specifically limited in this embodiment.

[0076] Illustratively, in this embodiment, the battery cell 300 is in a rectangular shape, and the second plug-in portion is disposed on the battery cell 300 near the angle between two adjacent sides.

[0077] Specifically, the battery cell 300 is in a rectangular shape, such as a blade battery, and the second plug-in portion is a plug-in hole, which is arranged near the four corners of the battery cell 300, which has little impact on the inside of the battery cell 300, and has a better and more stable fastening effect on the battery cell 300. Figure 6 As shown, gaps are left at the four corners of the battery cell 300, and plug holes can be opened on the connecting block. The connecting block is installed in the gaps and can be connected to the battery cell 300 by welding, clamping, welding, etc., so as to facilitate processing.

[0078] In some embodiments, a heat conductive member 400 is further included, and at least one of the tray assembly 100 and the cover 200 is in contact with the battery cell 300 through the heat conductive member 400 .

[0079] In this way, the heat conducting member 400 is used to replace the traditional heat conducting adhesive, which can not only play a heat conducting role, but also facilitate the subsequent non-destructive disassembly. Figure 1 As shown, the tray assembly 100 and the cover 200 are both in contact with the battery cell 300 via the heat conductive member 400 .

[0080] Exemplarily, the heat conducting member 400 is a heat conducting silicone sheet, and the heat conducting silicone sheet has a preset compression deformation amount.

[0081] Among them, the thermally conductive silicone sheet has the characteristics of compressibility, high thermal conductivity, and environmental friendliness. When the thermally conductive silicone sheet is installed between the battery cell 300 and the tray assembly 100 or the cover 200, a through hole is opened corresponding to the position of the plug-in column.

[0082] Moreover, the thermally conductive silicone sheet has a preset compression deformation amount, that is, when it is installed between the battery cell 300 and the tray assembly 100 or the cover body 200, the battery cell 300 and the tray assembly 100 compress the thermally conductive silicone sheet, or the battery cell 300 and the cover body 200 compress the thermally conductive silicone sheet, making the contact closer and the thermal conductivity better.

[0083] Among them, the thermally conductive silicone sheet can be composed of a whole piece or a plurality of pieces. Its specific thickness, preset compression deformation, etc. can be determined according to actual needs and are not specifically limited in this embodiment.

[0084] Furthermore, in this embodiment, a heat preservation member 500 is further included, and the heat preservation member 500 is disposed between the outer wall of at least one battery cell 300 and the inner wall of the tray assembly 100 .

[0085] Specifically, Figure 1 As shown, the thermal insulation component 500 plays a role in thermal insulation, which can be a thermal insulation board, the area of ​​which is the same as the side area of ​​the battery cell 300, and at least the space between the outermost battery cell 300 and the inner wall of the tray assembly 100 is filled with the thermal insulation component 500, which can absorb the assembly tolerance of the battery cell 300 while providing thermal insulation.

[0086] It should be noted that usually, the heat preservation member 500 is not provided at one or both ends of the battery cell 300 having the pole, so as not to affect the arrangement of other components such as wiring.

[0087] Optionally, in this embodiment, the tray assembly 100 includes a bottom plate 101 and multiple side plates 102, and the side plates 102 are connected in sequence and respectively connected to the same side of the bottom plate 101 to form an open cavity 110, and the cover body 200 is connected to the side of each side plate 102 facing away from the bottom plate 101.

[0088] Specifically, Figure 1 As shown, four side panels 102 are connected in sequence to form a rectangular frame structure, and can be connected to the same side of the bottom plate 101 by screwing, clamping, plugging, etc., so as to form an open cavity 110 for installing the battery cell 300. In addition, the cover 200 can also be connected to the side of each side panel 102 away from the bottom plate 101 by screwing, clamping, plugging, etc., to close the opening of the open cavity 110.

[0089] The side panels 102 may be enclosed by a larger number of side panels 102, and the side panels 102 may be hollow structures with reinforcing ribs disposed therein, which may be determined according to actual needs and is not specifically limited in this embodiment.

[0090] In some embodiments, base plate 101 is a cold plate.

[0091] In this way, if Figure 2As shown, the cold plate can cool or heat the battery cell 300 to ensure that it works within a relatively ideal temperature range. The cold plate has a flow channel, and the flow channel has a flowable fluid medium, through which heat is transferred.

[0092] Of course, the bottom plate 101 may also be replaced by other types of cooling components, depending on actual needs, and is not specifically limited in this embodiment.

[0093] In a second aspect, an embodiment of the present application further provides an electrical device, including a device body, on which a battery pack provided by any of the above embodiments is disposed.

[0094] Among them, the structure of the battery pack has been described in detail in the above embodiments and will not be repeated here.

[0095] Among them, the electrical equipment here can be vehicles, communication base stations, energy storage power stations and other equipment. The device bodies of these electrical equipment can be connected to the battery pack by screw connection, snap connection and other methods, and the device bodies are also electrically connected to the battery pack so that the electrical equipment can use electricity when necessary.

[0096] The electric device provided in the embodiment of the present application includes a tray assembly 100, a cover 200 and a battery cell 300 by configuring a battery pack. An opening cavity 110 is provided on the tray assembly 100, the battery cell 300 is installed in the opening cavity 110, and the cover 200 is provided on the tray assembly 100 to close the opening cavity 110 and protect the battery cell. Among them, at least one first connection portion 310 is provided on the battery cell 300, and at least one second connection portion 120 is provided on at least one of the tray assembly 100 and the cover 200. The second connection portion 120 is detachably connected to the first connection portion 310 to limit the movement of the battery cell 300 relative to the tray assembly 100 or the cover 200. That is, the tray assembly 100 or the cover body 200 and the battery cell 300 can be connected and fixed by the second connecting part 120 and the first connecting part 310. When disassembly is required, the connection between the second connecting part 120 and the first connecting part 310 can be released to separate the battery cell 300 from the tray assembly 100 or the cover body 200. This makes disassembly and assembly easy, which is beneficial to maintenance and subsequent recycling.

[0097] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0098] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery pack, characterized in that: include: Tray assembly (100), cover (200) and battery cell (300); The tray assembly (100) is provided with an open cavity (110), and the battery core (300) is located in the open cavity (110); The cover body (200) is covered on the tray assembly (100) to close the opening (110); At least one first connection portion (310) is provided on the battery cell (300), and at least one second connection portion (120) is provided on at least one of the tray assembly (100) and the cover body (200), and the second connection portion (120) is detachably connected to the first connection portion (310) to limit the movement of the battery cell (300) relative to the tray assembly (100) or the cover body (200).

2. The battery pack according to claim 1, characterized in that: The first connecting portion (310) is a first plug-in portion, and the second connecting portion (120) is a second plug-in portion matching the first plug-in portion, and the second plug-in portion is correspondingly plugged with the first plug-in portion.

3. The battery pack according to claim 2, characterized in that: One of the first plug-in portion and the second plug-in portion is a plug-in column, and the other is a plug-in hole matching the plug-in column, and the plug-in column is plugged into the plug-in hole correspondingly.

4. The battery pack according to claim 2, characterized in that: The first plug-in portion is arranged obliquely relative to the outer side wall of the battery core (300) so as to form a first angle with the outer side wall of the battery core (300).

5. The battery pack according to claim 4, characterized in that: The first angle is an acute angle.

6. The battery pack according to claim 4, characterized in that: The first plug-in portion is located on the outer wall of the battery core (300), a plurality of the first plug-in portions are arranged at intervals on the outer wall of the battery core (300), and the first plug-in portions on the same outer wall have the same inclination direction.

7. The battery pack according to claim 6, characterized in that: The first plug-in parts on the battery core (300) are inclined in opposite directions.

8. The battery pack according to claim 2, characterized in that: The second plug-in portion is located on the battery core (300), and two ends of the first plug-in portion are connected to two opposite sides of the tray assembly (100).

9. The battery pack according to claim 8, characterized in that: The battery core (300) is in the shape of a rectangular parallelepiped, and the second plug-in portion is arranged on the battery core (300) at a position close to the angle between two adjacent sides.

10. The battery pack according to any one of claims 1 to 9, characterized in that: It also includes a heat conducting member (400), and at least one of the tray assembly (100) and the cover body (200) is in contact with the battery core (300) through the heat conducting member (400).

11. The battery pack according to claim 10, characterized in that: The heat-conducting component (400) is a heat-conducting silicone sheet, and the heat-conducting silicone sheet has a preset compression deformation amount.

12. The battery pack according to any one of claims 1 to 9, characterized in that: It also includes a heat-insulating component (500), which is arranged between the outer wall of at least one of the battery cells (300) and the inner wall of the tray assembly (100).

13. The battery pack according to any one of claims 1 to 9, characterized in that: The tray assembly (100) comprises a bottom plate (101) and a plurality of side plates (102), wherein the side plates (102) are connected in sequence and are respectively connected to the same side of the bottom plate (101) to form the open cavity (110), and the cover body (200) is connected to a side of each side plate (102) facing away from the bottom plate (101).

14. The battery pack according to claim 13, characterized in that: The bottom plate (101) is a cold plate.

15. An electrical equipment, characterized in that: The device comprises a device body on which a battery pack as claimed in any one of claims 1 to 14 is arranged.

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