Battery module, battery and electric device

Abstract

The utility model provides a battery module, a battery and an electric device. The battery module comprises a plurality of battery monomers, two end plates and two side plates, the plurality of battery monomers are arranged along a first direction, and the two end plates are respectively arranged at two ends of the plurality of battery monomers along the first direction. The two side plates are respectively arranged on two sides of the plurality of battery monomers along the second direction, the second direction is intersected with the first direction, each side plate is connected with the two end plates and the plurality of battery monomers, and one side, facing the plurality of battery monomers, of each side plate is provided with an accommodating concave part. According to the invention, the glue overflow phenomenon of the battery module can be improved.

Description

Technical Field

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

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] In a battery module, the battery cells are connected to the side panels by adhesive, which often results in adhesive overflow, which can affect the reliability of the battery during use. Therefore, how to effectively improve the adhesive overflow of the battery module is an urgent problem to be solved in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a battery module, a battery and an electrical device, which can improve the glue overflow phenomenon of the battery module.

[0005] In the first aspect, the embodiment of the present application provides a battery module, the battery module includes a plurality of battery cells, two end plates and two side plates, the plurality of battery cells are arranged along a first direction, the two end plates are respectively arranged at both ends of the plurality of battery cells along the first direction. The two side plates are respectively arranged at both sides of the plurality of battery cells along a second direction, the second direction intersects with the first direction, each side plate connects the two end plates and the plurality of battery cells, and a accommodating recess is provided on one side of the side plate facing the plurality of battery cells.

[0006] In the process of bonding the side panel and the battery cell, the above-mentioned technical solution can provide a larger activity space for the adhesive glue, and the adhesive glue squeezed by the side panel and the battery cell can be accommodated in the accommodating recess, reducing the risk of disorderly overflow of the adhesive glue, thereby improving the glue overflow phenomenon of the battery module.

[0007] In some embodiments of the first aspect, the accommodating recesses are provided at two ends of the side plate along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0008] The above technical solution can improve the glue overflow phenomenon while increasing the connection firmness between the side plate and the battery cell.

[0009] In some embodiments of the first aspect, the side plate includes a main body and two bent portions, the two bent portions respectively extending from two ends of the main body along the third direction and bent in a direction away from the battery cell to form a receiving recess.

[0010] On the one hand, the above technical solution forms a accommodating recess by setting a bending portion, and the size of the bending portion can be flexibly adjusted according to different usage environments to form accommodating recesses with different capacities, thereby improving the design flexibility of the side panel; on the other hand, different materials and processes can be used for preparation according to the different functional emphases of the main body and the bending portion, which provides the design of the side panel with the option of balancing cost and performance, and is conducive to improving the cost-effectiveness ratio.

[0011] In some embodiments of the first aspect, in the third direction, an end of the bent portion away from the main body does not exceed an end surface of the battery cell in the third direction.

[0012] The above technical solution can further reduce the risk of disorderly overflow of the adhesive, thereby further improving the adhesive overflow phenomenon of the battery module.

[0013] In some embodiments of the first aspect, a surface of the bent portion along the second direction close to the battery cell is a curved surface.

[0014] The curved surface can further increase the movement path of the adhesive on the surface of the bent portion along the second direction close to the battery cell, thereby further improving the adhesive accommodating capacity of the accommodating recess formed by the bent portion, which is beneficial to improving the effect of preventing adhesive from overflowing.

[0015] In some embodiments of the first aspect, a lubricating layer is disposed on a surface of the bending portion close to the battery cell in the second direction.

[0016] The curved surface can further increase the movement path of the adhesive on the surface of the bent portion along the second direction close to the battery cell, thereby further improving the adhesive accommodating capacity of the accommodating recess formed by the bent portion, which is beneficial to improving the effect of preventing adhesive from overflowing.

[0017] In some embodiments of the first aspect, the main body and the bending portion are an integrally formed structure.

[0018] On the one hand, there is no need to connect the main body and the bending part through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the main body and the bending part through an additional connection process, the main body and the bending part in an integrated structure have a higher connection firmness.

[0019] In some embodiments of the first aspect, the side panel further includes an extension portion, and the extension portion is extended along a third direction from an end of the bending portion away from the main body portion.

[0020] The above technical solution provides an extension portion, which can block the adhesive to reduce the risk of the adhesive flowing out along the bent portion to the side of the side plate facing away from the battery cell, thereby further improving the effect of preventing adhesive overflow.

[0021] In some embodiments of the first aspect, in the third direction, an end of the extension portion away from the main body portion does not exceed an end surface of the battery cell in the third direction.

[0022] The above technical solution can further reduce the risk of disorderly overflow of the adhesive, thereby further improving the adhesive overflow phenomenon of the battery module.

[0023] In some embodiments of the first aspect, the battery module further includes a restraining member, the restraining member is disposed around the two end plates and the plurality of battery cells, and the restraining member is connected to the extension portion.

[0024] On the one hand, the above technical scheme can improve the stability of the battery module structure, reduce the deformation or displacement caused by the expansion of the battery cell, and improve the reliability of the battery by setting the restraining component; on the other hand, by connecting the restraining component with the extension part, not only the stability of the side panel can be improved, but the restraining component can also form a blocking effect on the adhesive to reduce the risk of the adhesive flowing out along the extension part to the side of the side panel facing away from the battery cell, thereby further improving the effect of preventing adhesive overflow.

[0025] In some embodiments of the first aspect, the number of the restraining components is two, and the two restraining components are arranged at intervals along the third direction, which can improve the overall force stability of the battery module.

[0026] In some embodiments of the first aspect, an opening is provided on the side plate, and the opening penetrates the side plate along the second direction.

[0027] The above technical solution provides an opening on the side panel. On the one hand, the opening can be used as an observation window to enable the operator to intuitively check the coverage area of ​​the adhesive between the side panel and the battery cell, determine the bonding quality between the side panel and the battery cell, and improve the convenience and accuracy of detecting the glue pressing area of ​​the side panel; on the other hand, the opening can also serve as a component of the accommodating recess to further increase the capacity of the accommodating recess, thereby further improving the glue overflow phenomenon of the battery module; on the other hand, the opening can also release stress, thereby improving the structural strength of the side panel.

[0028] In some embodiments of the first aspect, in the second direction, the opening at least partially overlaps a gap between two adjacent battery cells.

[0029] The above technical solution can improve the observation effect of the opening as an observation window on the coverage area of ​​the adhesive, which is conducive to further improving the convenience and accuracy of detecting the glue pressing area of ​​the side panel.

[0030] In some embodiments of the first aspect, there are multiple openings, and the multiple openings are arranged at intervals along the first direction.

[0031] The above technical solution can not only improve the comprehensiveness of the detection of the side panel glue pressing area, but also help to improve the reliability of the battery module.

[0032] In some embodiments of the first aspect, the battery module further includes a transparent member connected to the side plate and covering the opening.

[0033] The transparent part of the above technical solution can cover the opening. On the one hand, it can reduce the occurrence of the adhesive between the side panel and the battery cell overflowing through the opening to the side of the side panel facing away from the battery cell to form dirt on the outer surface of the battery module, thereby improving the appearance quality of the battery module; on the other hand, it blocks debris in the external environment from entering the interior of the battery module through the opening, thereby reducing the risk of the battery cell being damaged by debris in the external environment, and further improving the overall reliability of the battery module.

[0034] In some embodiments of the first aspect, the transparent member is connected to a side of the side plate facing away from the battery cell.

[0035] The above technical solution can improve the appearance quality and reliability of the battery module while maintaining the improvement effect of the opening on the glue overflow phenomenon of the battery module.

[0036] In some embodiments of the first aspect, the transparent member is disposed in the opening and connected to an inner wall of the opening.

[0037] The transparent member is located in the opening, which can reduce the occupation of the external space of the side plate by the transparent member, thereby improving the energy density of the battery module.

[0038] In a second aspect, the present application provides a battery, which includes the battery module provided by any embodiment of the first aspect.

[0039] In a third aspect, the present application provides an electrical device, comprising a battery provided by any embodiment of the second aspect, and the battery is used to provide electrical energy.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0042] Figure 1A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0043] Figure 2 A schematic diagram of an exploded structure of a battery provided in some embodiments of the present application;

[0044] Figure 3 A schematic diagram of an exploded structure of a battery module provided in some embodiments of the present application;

[0045] Figure 4 A schematic cross-sectional structure diagram of a battery module provided in some embodiments of the present application;

[0046] Figure 5 A schematic side view of another side plate of a battery module provided in some embodiments of the present application;

[0047] Figure 6 for Figure 5 A schematic diagram of the local enlarged structure at H;

[0048] Figure 7 A schematic diagram of a three-dimensional structure of a side plate of another battery module provided in some embodiments of the present application;

[0049] Figure 8 A schematic diagram of the three-dimensional structure of a side plate of another battery module provided in some embodiments of the present application.

[0050] The reference numerals in the specific implementation manner are as follows:

[0051] 1. Vehicle; 2. Battery; 3. Controller; 4. Motor; 5. Box; 5a. First box portion; 5b. Second box portion; 5c. Accommodation space; 6. Battery module; 7. Battery cell;

[0052] 10. End plate; 20. Side plate; 21. Main body; 22. Bending portion; 23. Extending portion; 30. Accommodating recess; 40. Lubricating layer; 50. Restraining member; 60. Opening; 70. Transparent member; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0055] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0058] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0059] The term "plurality" used in the present application refers to two or more (including two).

[0060] In the present application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; meanwhile, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0061] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0062] The battery mentioned in the embodiments of the present application may include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in mixed connection through a busbar component.

[0063] In some embodiments, the battery may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0064] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0065] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0066] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0067] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0068] In the battery module, the battery cells are connected to the side panels by adhesive, which often leads to adhesive overflow, which will affect the reliability of the battery during use. At present, adhesive strips are usually set on the side panels to prevent adhesive overflow. However, the circumferential edges of the battery cells are usually rounded, and gaps can be formed between the rounded edges of adjacent battery cells. Even if adhesive strips are set on the side panels, the adhesive blocked by the adhesive strips will continue to spread from the gaps between the rounded edges of adjacent battery cells until it spreads to the ends of the battery cells and overflows.

[0069] Based on the above considerations, the present application designs a battery module, which includes multiple battery cells, two end plates and two side plates. The multiple battery cells are arranged along a first direction, and the two end plates are respectively arranged at both ends of the multiple battery cells along the first direction. The two side plates are respectively arranged on both sides of the multiple battery cells along a second direction, and the second direction intersects with the first direction. Each side plate connects the two end plates and the multiple battery cells, and a accommodating recess is provided on one side of the side plate facing the multiple battery cells.

[0070] During the bonding process of the side panel and the battery cell, the accommodating recess can provide a larger activity space for the adhesive, and the adhesive squeezed by the side panel and the battery cell can be accommodated in the accommodating recess, reducing the risk of disorderly overflow of the adhesive, thereby improving the adhesive overflow phenomenon of the battery module.

[0071] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0072] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel 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, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0073] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including battery boxes and electrical equipment using batteries. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0074] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0075] Continue to refer Figure 1 The vehicle 1 is provided with a battery 2 inside, and the battery 2 can be provided at the bottom, head, or tail of the vehicle 1. The battery 2 can be used for powering the vehicle 1, for example, the battery 2 can be used as an operating power source for the vehicle 1.

[0076] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1 .

[0077] In some embodiments of the present application, the battery 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0078] Figure 2 An exploded schematic diagram of a battery provided for some embodiments of the present application.

[0079] Continue to refer Figure 2 The battery 2 includes a battery case 5 and a battery cell, and the battery cell is accommodated in the battery case 5.

[0080] The battery case 5 is used to accommodate battery cells, and the battery case 5 can be of various structures. In some embodiments, the battery case 5 can include a first case portion 5a and a second case portion 5b, the first case portion 5a and the second case portion 5b cover each other, and the first case portion 5a and the second case portion 5b jointly define a storage space 5c for accommodating battery cells. The second case portion 5b can be a hollow structure with one end open, the first case portion 5a is a plate-like structure, and the first case portion 5a covers the open side of the second case portion 5b to form a battery case 5 with a storage space 5c; the first case portion 5a and the second case portion 5b can also be hollow structures with one side open, and the open side of the first case portion 5a covers the open side of the second case portion 5b to form a battery case 5 with a storage space 5c. Of course, the first case portion 5a and the second case portion 5b can be of various shapes, such as a cylinder, a cuboid, etc.

[0081] In order to improve the sealing performance after the first box body part 5a and the second box body part 5b are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body part 5a and the second box body part 5b.

[0082] Assuming that the first box body portion 5a covers the top of the second box body portion 5b, the first box body portion 5a can also be called an upper box cover, and the second box body portion 5b can also be called a lower box.

[0083] In the battery 2, there can be one or more battery cells. If there are multiple battery cells, the multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells are connected in series and in parallel. The multiple battery cells can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells is accommodated in the battery box 5; of course, multiple battery cells can also be connected in series, in parallel, or in mixed connection to form a battery module 6, and the multiple battery modules 6 are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the battery box 5.

[0084] Figure 3 A schematic diagram of an exploded structure of a battery module provided in some embodiments of the present application, Figure 4 A schematic cross-sectional structure diagram of a battery module provided in some embodiments of the present application.

[0085] Continue to refer Figure 3 to Figure 4 The embodiment of the present application provides a battery module 6, which includes a plurality of battery cells 7, two end plates 10 and two side plates 20. The plurality of battery cells 7 are arranged along a first direction X, and the two end plates 10 are respectively disposed at both ends of the plurality of battery cells 7 along the first direction X. The two side plates 20 are respectively disposed at both sides of the plurality of battery cells 7 along a second direction Y, and the second direction Y intersects with the first direction X. Each side plate 20 connects the two end plates 10 and the plurality of battery cells 7, and a receiving recess 30 is disposed on one side of the side plate 20 facing the plurality of battery cells 7.

[0086] Exemplarily, two end plates 10 and two side plates 20 are connected to each other to form a housing space, and a plurality of battery cells 7 are housed in the housing space, and the two side plates 20 and the two side plates 20 can constrain the battery cells 7. Among them, the end plates 10 and the side plates 20 can be made of, but not limited to, metal or non-metal materials, for example, the metal material can be copper, aluminum or stainless steel, etc.; the non-metal material can be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the end plates 10 and the side plates 20 can be made of the same material to simplify the preparation process and help reduce costs.

[0087] The side plate 20 can be detachably connected to the end plate 10, or can be integrally provided on the end plate 10. The side plate 20 can be directly connected to the end plate 10, or can be restricted to the end plate 10 by other components. As an example, the connection method between the side plate 20 and the end plate 10 can be, but not limited to, bolt connection, welding, riveting, clamping or bonding. The battery cell 7 and the side plate 20 are bonded together by adhesive, and the adhesive can be, but not limited to, made of materials such as epoxy resin, polyurethane or acrylate.

[0088] The receiving recess 30 is used to receive the adhesive. The receiving recess 30 may be formed by opening a groove on the side of the side plate 20 facing the battery cells 7 , or by bending the side plate 20 to form the receiving recess 30 on the side of the side plate 20 facing the battery cells 7 .

[0089] Optionally, the accommodating recess 30 may be in a straight line shape extending along the first direction X, or in a wavy line shape extending along the first direction X.

[0090] Optionally, the number of the accommodating recesses 30 may be one or more. As an example, when the number of the accommodating recesses 30 is multiple, the multiple accommodating recesses 30 are spaced apart along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0091] In the process of bonding the side panel 20 and the battery cell 7, the accommodating recess 30 can provide a larger activity space for the adhesive, and the adhesive squeezed by the side panel 20 and the battery cell 7 can be accommodated in the accommodating recess 30, reducing the risk of disorderly overflow of the adhesive, thereby improving the adhesive overflow phenomenon of the battery module.

[0092] In some embodiments, the accommodating recesses 30 are disposed at two ends of the side plate 20 along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0093] The area between the two ends of the side plate 20 is the main connection area between the side plate 20 and the battery cell 7. The accommodating recesses 30 are arranged at the two ends of the side plate 20 along the third direction Z so that the accommodating recesses 30 avoid the main connection area between the side plate 20 and the battery cell 7, which is beneficial to reduce the influence of the accommodating recesses 30 on the connection between the side plate 20 and the battery cell 7.

[0094] In this way, the above technical solution can improve the glue overflow phenomenon and at the same time enhance the connection firmness between the side plate 20 and the battery cell 7 .

[0095] In some embodiments, the side plate 20 includes a main body 21 and two bent portions 22 . The two bent portions 22 extend from two ends of the main body 21 along the third direction Z and bend in a direction away from the battery cell 7 to form a receiving recess 30 .

[0096] Exemplarily, the bending portion 22 can be detachably connected to the main body 21, or can be integrally provided on the main body 21. The bending portion 22 can be directly connected to the main body 21, or can be restricted to the main body 21 by other components. As an example, the connection method between the bending portion 22 and the main body 21 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0097] Optionally, the main body 21 and the bent portion 22 may be made of different materials. For example, the main body 21 needs to be connected to the battery cell 7 and the end plate 10, and the main body 21 is made of a material with high rigidity to improve the connection firmness and deformation resistance, and improve the overall reliability of the battery module; the bent portion 22 can be made of a relatively low-cost material to reduce the overall manufacturing cost of the side plate 20 and improve the economic benefits of the battery module 6.

[0098] In some optional examples, the bending portion 22 and the main body 21 may both be flat plate structures, and there is a certain bending angle between the bending portion 22 and the main body 21, and the bending angle refers to the angle formed between the bending portion 22 and the main body 21 and pointing to the accommodating recess 30. The bending angle may be an acute angle, so that the bending portion 22 can block the adhesive, thereby reducing the risk of the adhesive flowing out along the bending portion 22 to the side of the side plate 20 facing away from the battery cell 7, thereby further improving the effect of preventing adhesive overflow.

[0099] In some optional examples, the bending portion 22 can also be bent into an arc shape, and the main body 21 is a flat plate structure to improve the accommodating capacity of the accommodating recess 30 formed by the bending portion 22 for the adhesive, which is beneficial to improving the effect of preventing adhesive overflow.

[0100] On the one hand, the above technical solution forms a receiving recess 30 by setting a bending portion 22, and the size of the bending portion 22 can be flexibly adjusted according to different usage environments to form receiving recesses 30 with different capacities, thereby improving the design flexibility of the side panel 20; on the other hand, different materials and processes can be used for preparation according to the different functional emphases of the main body 21 and the bending portion 22, which provides the design of the side panel 20 with the option of balancing cost and performance, and is conducive to improving the cost-effectiveness ratio.

[0101] In some embodiments, in the third direction Z, an end of the bent portion 22 away from the main body 21 does not exceed an end surface of the battery cell 7 in the third direction Z.

[0102] Exemplarily, the battery cell 7 includes a shell and an electrode assembly, and the shell is a component used to form an internal environment of the battery cell 7. The formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. Optionally, the shell can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0103] The outer shell includes an end cap and a shell. The end cap refers to a component that covers the mouth of the shell to isolate the internal environment of the battery cell 7 from the external environment. Optionally, the shape of the end cap can be adapted to the shape of the shell to match the shell. Optionally, the end cap can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is not easily deformed when squeezed and collided, so that the battery cell 7 can have a higher structural strength and reliability can also be improved. Functional components such as electrode terminals can be provided on the end cap, and the electrode terminals can be used to be electrically connected to the electrode assembly for outputting or inputting electrical energy of the battery cell 7.

[0104] The shell is a component used to cooperate with the end cap to form the internal environment of the battery cell 7, wherein the formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. The shell and the end cap can be independent components, and an opening can be set on the shell, and the internal environment of the battery cell 7 is formed by closing the end cap at the opening. Without limitation, the end cap and the shell can also be integrated. Specifically, the end cap and the shell can form a common connection surface before other components are put into the shell, and when the interior of the shell needs to be encapsulated, the end cap is closed with the shell. The shell can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell can be determined according to the specific shape and size of the electrode assembly. The shell can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0105] The electrode assembly is a component in the battery cell 7 where electrochemical reactions occur. One or more electrode assemblies may be contained in the housing. The electrode assembly is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body 21 of the electrode assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive tab and the negative tab may be located together at one end of the main body 21 or respectively at both ends of the main body 21. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0106] The end face of the battery cell 7 in the third direction Z refers to the end face of the outer shell of the battery cell 7 in the third direction Z. Specifically, the outer shell includes a shell and an end cover arranged along the third direction Z, that is, the shell has an opening at one end in the third direction Z, the end cover covers the opening, the electrode terminal of the battery cell 7 protrudes from a side surface of the end cover away from the shell, and the end face of the battery cell 7 in the third direction Z includes a side surface of the end cover away from the shell and a side surface of the shell away from the end cover.

[0107] During the bonding process between the side panel 20 and the battery cell 7, even if the adhesive glue squeezed by the side panel 20 and the battery cell 7 can overflow from the end of the bending portion 22 away from the main body 21, since the end of the bending portion 22 away from the main body 21 does not exceed the end face of the battery cell 7 in the third direction Z, the overflowed adhesive glue will spread along the end of the bending portion 22 away from the main body 21 to the side of the side panel 20 facing away from the battery cell 7, and will not overflow onto the end face of the battery cell 7 in the third direction Z, thereby reducing the risk of failure of the battery cell 7 caused by interference between the adhesive glue and the electrode terminal.

[0108] In this way, the above technical solution can further reduce the risk of disorderly overflow of the adhesive, thereby further improving the adhesive overflow phenomenon of the battery module.

[0109] In some embodiments, a surface of the bending portion 22 close to the battery cell 7 along the second direction Y is a curved surface.

[0110] The curved surface can further increase the moving path of the adhesive on the surface of the bent portion 22 close to the battery cell 7 along the second direction Y, thereby further improving the adhesive accommodating capacity of the accommodating recess 30 formed by the bent portion 22, which is beneficial to improving the effect of preventing adhesive from overflowing. For example, the curved surface can be an arc surface or a wavy surface.

[0111] Figure 5 A schematic diagram of a side view structure of another side plate of a battery module provided in some embodiments of the present application, Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at H.

[0112] Continue to refer Figure 5 and Figure 6 In some embodiments, a lubricating layer 40 is disposed on a surface of the bending portion 22 close to the battery cell 7 in the second direction Y.

[0113] Exemplarily, the main function of the lubricating layer 40 is to reduce the resistance of the adhesive to flow on the surface of the bent portion 22 close to the battery cell 7 in the second direction Y. During the bonding process between the side plate 20 and the battery cell 7, since the surface of the lubricating layer 40 has a lower friction coefficient, the adhesive squeezed by the side plate 20 and the battery cell 7 can more easily flow along the surface of the lubricating layer 40 to enter the accommodating recess 30, rather than the adhesive spreading toward the end of the battery cell 7 along the gap between the rounded edges of the adjacent battery cells 7.

[0114] Optionally, the lubricating layer 40 may be, but is not limited to, polytetrafluoroethylene, silicon-based lubricant, graphite lubricant, molybdenum disulfide, polyurethane or wax-based lubricant.

[0115] In this way, the above technical solution can reduce the resistance of the adhesive to flow on the surface of the bending portion 22 close to the battery cell 7 in the second direction Y by setting the lubricating layer 40, so that the adhesive can more easily enter the accommodating recess 30, thereby further improving the glue overflow phenomenon of the battery module.

[0116] In some embodiments, the main body 21 and the bending portion 22 are an integrally formed structure.

[0117] On the one hand, there is no need to connect the main body 21 and the bending portion 22 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the main body 21 and the bending portion 22 through an additional connection process, the main body 21 and the bending portion 22 in an integrated structure have a higher connection firmness.

[0118] In some embodiments, the side plate 20 further includes an extension portion 23 , and the extension portion 23 is extended along the third direction Z from an end of the bending portion 22 away from the main body portion 21 .

[0119] Exemplarily, the extension portion 23 may be detachably connected to the bending portion 22, or may be integrally provided on the bending portion 22. The extension portion 23 may be directly connected to the bending portion 22, or may be restricted to the bending portion 22 by other components. As an example, the connection method between the extension portion 23 and the bending portion 22 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0120] Optionally, the extension portion 23 and the bend portion 22 are integrally formed. On the one hand, there is no need to connect the extension portion 23 and the bend portion 22 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the extension portion 23 and the bend portion 22 through an additional connection process, the extension portion 23 and the bend portion 22 in an integral structure have a higher connection firmness.

[0121] The above technical solution provides an extension portion 23 which can block the adhesive to reduce the risk of the adhesive flowing out along the bent portion 22 to the side of the side plate 20 facing away from the battery cell 7, thereby further improving the effect of preventing adhesive overflow.

[0122] In some embodiments, in the third direction Z, an end of the extension portion 23 away from the main body 21 does not exceed an end surface of the battery cell in the third direction Z.

[0123] During the bonding process between the side panel 20 and the battery cell 7, even if the adhesive glue squeezed by the side panel 20 and the battery cell 7 can overflow from the end of the extension portion 23 away from the main body 21, since the end of the extension portion 23 away from the main body 21 does not exceed the end face of the battery cell 7 in the third direction Z, the overflowed adhesive glue will overflow the end of the extension portion 23 away from the main body 21 and spread to the side of the side panel 20 facing away from the battery cell 7, and will not overflow onto the end face of the battery cell 7 in the third direction Z, thereby reducing the risk of failure of the battery cell 7 caused by interference between the adhesive glue and the electrode terminal.

[0124] In this way, the above technical solution can further reduce the risk of disorderly overflow of the adhesive, thereby further improving the adhesive overflow phenomenon of the battery module.

[0125] In some embodiments, the battery module 6 further includes a restraining member 50 , which is disposed around the two end plates 10 and the plurality of battery cells 7 , and is connected to the extension portion 23 .

[0126] Exemplarily, the restraining member 50 is sleeved and connected to the two end plates 10 and the multiple battery cells 7, and the restraining member 50 can restrain the two end plates 10 and the multiple battery cells 7 to fix the two end plates 10 and the multiple battery cells 7. Thus, the stability of the battery module 6 structure can be improved, the deformation or displacement caused by the expansion of the battery cells 7 can be reduced, and the reliability of the battery can be improved.

[0127] Optionally, the restraining component 50 can be made of an elastic and insulating non-metallic material, such as rubber, silicone rubber, polyethylene, polyurethane, polyvinyl chloride or rubber foam. As an example, the restraining component 50 includes an elastic band in a ring shape, which is connected head to tail to form a ring structure and is sleeved and connected to the two end plates 10 and multiple battery cells 7. The elastic band has high deformability and can better wrap the two end plates 10 and multiple battery cells 7, and can provide more comprehensive preload. At the same time, the elastic band with a ring structure is simple in structure, low in production cost, and has good economic benefits.

[0128] Optionally, the restraining member 50 may be made of an elastic and insulating metal material, such as stainless steel, aluminum alloy or nickel-titanium alloy. As an example, the restraining member 50 includes an annular steel belt, which is connected head to tail to form an annular structure and is sleeved and connected to the two end plates 10 and multiple battery cells 7. The steel belt is easy to install and has high structural strength, thereby further improving the stability of the battery module 6 structure. The thickness of the steel belt may be 1mm-4mm, for example, the thickness of the steel belt may be but is not limited to 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, etc.

[0129] The restraining member 50 may be detachably connected to the extension portion 23, or may be integrally provided on the extension portion 23. The restraining member 50 may be directly connected to the extension portion 23, or may be restricted on the extension portion 23 by other members. As an example, the connection method between the restraining member 50 and the extension portion 23 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0130] Optionally, the number of the tie-down member 50 may be one or more. As an example, when the number of the tie-down member 50 is more than one, the plurality of tie-down members 50 are arranged parallel to each other.

[0131] On the one hand, the above technical scheme can improve the stability of the battery module 6 structure, reduce the deformation or displacement caused by the expansion of the battery cell 7, and improve the reliability of the battery by setting the restraining component 50; on the other hand, by connecting the restraining component 50 with the extension portion 23, not only the stability of the side panel 20 can be improved, but the restraining component 50 can also form a blocking effect on the adhesive to reduce the risk of the adhesive flowing out along the extension portion 23 to the side of the side panel 20 facing away from the battery cell 7, thereby further improving the effect of preventing adhesive overflow.

[0132] In some embodiments, the number of the restraining components 50 is two, and the two restraining components 50 are spaced apart along the third direction Z, which can improve the overall force stability of the battery module 6 .

[0133] Alternatively, two restraining members 50 may be provided near both ends of the battery cell 7 along the third direction Z.

[0134] In some embodiments, an opening 60 is disposed on the side plate 20 , and the opening 60 passes through the side plate 20 along the second direction Y.

[0135] Exemplarily, one of the main functions of the opening 60 is to serve as an observation window, allowing an operator to visually check the coverage area of ​​the adhesive between the side panel 20 and the battery cell 7 to determine the bonding quality between the side panel 20 and the battery cell 7 .

[0136] At the same time, since the side plate 20 has a certain thickness, the opening 60 has a certain accommodating function as a component of the accommodating recess 30, which can further increase the capacity of the accommodating recess 30, thereby further improving the glue overflow phenomenon of the battery module.

[0137] In addition, the opening 60 on the side plate 20 can also release stress, thereby improving the structural strength of the side plate 20 .

[0138] Optionally, in the second direction Y, the projection of the opening 60 may be, but is not limited to, a rectangle, a circle, an ellipse, a trapezoid, an oblong, or the like.

[0139] Optionally, the side panel 20 and the opening 60 are an integrally formed structure to simplify the manufacturing process and help reduce costs.

[0140] Optionally, the opening 60 is extended along the third direction Z to further improve the observation range.

[0141] The above technical solution provides an opening 60 on the side panel 20. On the one hand, the opening 60 can be used as an observation window to enable the operator to intuitively check the coverage area of ​​the adhesive between the side panel 20 and the battery cell 7, determine the bonding quality between the side panel 20 and the battery cell 7, and improve the convenience and accuracy of detecting the glue pressing area of ​​the side panel 20; on the other hand, the opening 60 can also serve as a component of the accommodating recess 30 to further increase the capacity of the accommodating recess 30, thereby further improving the glue overflow phenomenon of the battery module; on the other hand, the opening 60 can also release stress, thereby improving the structural strength of the side panel 20.

[0142] In some embodiments, in the second direction Y, the opening 60 at least partially overlaps with the gap between two adjacent battery cells 7 .

[0143] Exemplarily, the opening 60 at least partially overlaps with the gap between two adjacent battery cells 7 in the second direction Y. In other words, the projection of the opening 60 in the second direction Y at least partially overlaps with the projection of the gap between two adjacent battery cells 7 in the second direction Y. The projection of the opening 60 in the second direction Y may partially overlap with the projection of the gap between two adjacent battery cells 7 in the second direction Y, or the projection of the gap between two adjacent battery cells 7 in the second direction Y may be located within the projection of the opening 60 in the second direction Y. This means that when the opening 60 is observed along a line of sight parallel to the second direction Y, the gap between the two battery cells 7 can be seen.

[0144] It is understandable that the gap between two adjacent battery cells 7 is formed by the rounded edges of the two adjacent battery cells 7. If adhesive can be observed in the gap between two adjacent battery cells 7, it can be explained that the adhesive coverage between the side wall of the battery cell 7 and the side plate 20 is good.

[0145] In this way, the above technical solution can improve the observation effect of the opening 60 as an observation window on the coverage area of ​​the adhesive, which is beneficial to further improve the convenience and accuracy of detecting the glue pressing area of ​​the side panel 20.

[0146] In some embodiments, there are multiple openings 60 , and the multiple openings 60 are arranged along the first direction X at intervals.

[0147] For example, the number of the openings 60 may be two, three, four or more, which may be selected according to the actual application environment. In one example, the number of the openings 60 matches the number of gaps between adjacent battery cells 7 .

[0148] It is understandable that a plurality of gaps are formed between the plurality of battery cells 7, and the plurality of gaps are spaced apart along the first direction X. If only one opening 60 is provided, and the plurality of gaps can be observed through the opening 60, the size of the opening 60 along the first direction X needs to be increased, and if the size of the opening 60 along the first direction X is too long, the opening 60 will occupy too large a proportion of the entire side plate 20, thereby affecting the structural strength of the side plate 20.

[0149] By providing a plurality of openings 60, the plurality of openings 60 are arranged at intervals along the first direction X, and the plurality of openings 60 correspond to the plurality of gaps one by one, so that the proportion of the openings 60 on the entire side plate 20 can be appropriately reduced while ensuring that the plurality of gaps can be observed through the openings 60, thereby improving the structural strength of the side plate 20 and improving the reliability of the battery module 6.

[0150] In this way, the above technical solution can not only improve the comprehensiveness of the detection of the glue pressing area of ​​the side panel 20, but also help to improve the reliability of the battery module 6.

[0151] Figure 7 A schematic diagram of a three-dimensional structure of a side plate of another battery module provided in some embodiments of the present application. Figure 8 A schematic diagram of the three-dimensional structure of a side plate of another battery module provided in some embodiments of the present application.

[0152] Continue to refer Figure 7 and Figure 8 In some embodiments, the battery module 6 further includes a transparent member 70 , which is connected to the side plate 20 and covers the opening 60 .

[0153] For example, the transparent member 70 may be detachably connected to the side panel 20, or may be fixedly arranged on the side panel 20. The transparent member 70 may be directly connected to the side panel 20, or may be restricted to the side panel 20 by other components. For example, the connection between the transparent member 70 and the side panel 20 may be, but is not limited to, welding, bolt connection, bonding, clamping, plugging, or riveting.

[0154] Optionally, the transparent member 70 may be, but not limited to, a film structure or a plate structure, etc. The transparent member 70 may be, but not limited to, polymethyl methacrylate, polycarbonate, polyethylene terephthalate, polypropylene, polyvinyl chloride, polystyrene, polysulfone, transparent nylon or glass, etc.

[0155] The transparent part 70 of the above technical solution can cover the opening 60. On the one hand, it can reduce the occurrence of the adhesive between the side panel 20 and the battery cell 7 overflowing through the opening 60 to the side of the side panel 20 facing away from the battery cell 7 to form dirt on the outer surface of the battery module, thereby improving the appearance quality of the battery module 6; on the other hand, it blocks debris in the external environment from entering the interior of the battery module 6 through the opening 60, thereby reducing the risk of the battery cell 7 being damaged by debris in the external environment, and further improving the overall reliability of the battery module 6.

[0156] In some embodiments, the transparent member 70 is connected to a side of the side plate 20 facing away from the battery cell 7 .

[0157] As described above, since the side plate 20 has a certain thickness, the opening 60 has a certain accommodating function as a component of the accommodating recess 30, which can further increase the capacity of the accommodating recess 30. The transparent member 70 is connected to the side of the side plate 20 facing away from the battery cell 7, so that the transparent member 70 will not block the moving path of the adhesive flowing from between the side plate 20 and the battery cell 7 to the inside of the opening 60.

[0158] In this way, the above technical solution can improve the appearance quality and reliability of the battery module 6 while maintaining the improvement effect of the opening 60 on the glue overflow phenomenon of the battery module.

[0159] In some embodiments, the transparent member 70 is disposed in the opening 60 and connected to the inner wall of the opening 60 .

[0160] The transparent member 70 is located in the opening 60 , which can reduce the occupation of the external space of the side plate 20 by the transparent member 70 , thereby improving the energy density of the battery module 6 .

[0161] According to some embodiments of the present application, the present application also provides a battery, comprising a battery module of any of the above schemes.

[0162] According to some embodiments of the present application, the present application also provides an electrical device, comprising a battery according to any of the above schemes, wherein the battery is used to provide electrical energy.

[0163] In order to better understand the battery module provided in the embodiment of the present application, based on the same inventive concept, an embodiment of the above-mentioned battery module in practical application is provided here for illustration.

[0164] The embodiment of the present application provides a battery module 6, which includes a plurality of battery cells 7, two end plates 10, two side plates 20, a restraining member 50 and a transparent member 70. The plurality of battery cells 7 are arranged along a first direction X, and the two end plates 10 are respectively disposed at both ends of the plurality of battery cells 7 along the first direction X.

[0165] The two side plates 20 are respectively arranged on both sides of the plurality of battery cells 7 along the second direction Y. Each side plate 20 connects the two end plates 10 and the plurality of battery cells 7. The side plate 20 includes a main body 21, two bent portions 22 and two extension portions 23. The two bent portions 22 extend from the two ends of the main body 21 along the third direction Z and bend in a direction away from the battery cells 7, and form a receiving recess 30 on one side of the side plate 20 facing the plurality of battery cells 7. The extension portion 23 is extended along the third direction Z from one end of the bent portion 22 away from the main body 21. In the third direction Z, the end of the extension portion 23 away from the main body 21 does not exceed the end surface of the battery cell in the third direction Z.

[0166] The side plate 20 is provided with a plurality of openings 60 , which penetrate the side plate 20 along the second direction Y, and are arranged at intervals along the first direction X. In the second direction Y, the openings 60 at least partially overlap the gaps between two adjacent battery cells 7 . The transparent member 70 is connected to the side plate 20 and covers the openings 60 .

[0167] The restraining member 50 is disposed around the two end plates 10 and the plurality of battery cells 7 , and the restraining member 50 is connected to the extending portion 23 .

[0168] In the process of bonding the side panel 20 and the battery cell 7, the above-mentioned technical solution can provide a larger activity space for the adhesive glue in the receiving recess 30, and the adhesive glue squeezed by the side panel 20 and the battery cell 7 can be accommodated in the receiving recess 30, reducing the risk of disorderly overflow of the adhesive glue, thereby improving the glue overflow phenomenon of the battery module. By setting the opening 60 on the side panel 20, on the one hand, the opening 60 can be used as an observation window to enable the operator to intuitively check the coverage area of ​​the adhesive glue between the side panel 20 and the battery cell 7, determine the bonding quality between the side panel 20 and the battery cell 7, and improve the convenience and accuracy of the detection of the glue pressing area of ​​the side panel 20; on the other hand, the opening 60 can also be used as a component of the receiving recess 30 to further increase the capacity of the receiving recess 30, thereby further improving the glue overflow phenomenon of the battery module; on the other hand, the opening 60 can also play a role in releasing stress, thereby improving the structural strength of the side panel 20.

[0169] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery module, characterized in that: include: A plurality of battery cells are arranged along a first direction; Two end plates, respectively disposed at two ends of the plurality of battery cells along the first direction; Two side plates are respectively arranged on both sides of the multiple battery cells along the second direction, the second direction intersects with the first direction, each of the side plates connects two end plates and the multiple battery cells, and a accommodating recess is provided on one side of the side plate facing the multiple battery cells.

2. The battery module according to claim 1, characterized in that: The accommodating recesses are arranged at two ends of the side plate along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The battery module according to claim 2, characterized in that: The side plate includes a main body and two bent parts. The two bent parts are respectively extended from two ends of the main body along the third direction and bent in a direction away from the battery cell to form the accommodating recess.

4. The battery module according to claim 3, characterized in that: In the third direction, one end of the bent portion away from the main body portion does not exceed an end surface of the battery cell in the third direction.

5. The battery module according to claim 3, characterized in that: A surface of the bent portion close to the battery cell along the second direction is a curved surface.

6. The battery module according to claim 3, characterized in that: A lubricating layer is disposed on a surface of the bent portion close to the battery cell in the second direction.

7. The battery module according to claim 3, characterized in that: The main body and the bending portion are an integrally formed structure.

8. The battery module according to claim 3, characterized in that: The side plate further includes an extension portion, and the extension portion is extended from an end of the bending portion away from the main body portion along the third direction.

9. The battery module according to claim 8, characterized in that: In the third direction, one end of the extension portion away from the main body portion does not exceed an end surface of the battery cell in the third direction.

10. The battery module according to claim 9, characterized in that: The battery module further includes a restraining member disposed around the two end plates and the plurality of battery cells, and the restraining member is connected to the extending portion.

11. The battery module according to claim 10, characterized in that: The number of the binding components is two, and the two binding components are arranged at intervals along the third direction.

12. The battery module according to claim 1, characterized in that: The side plate is provided with an opening, and the opening penetrates the side plate along the second direction.

13. The battery module according to claim 12, characterized in that: In the second direction, the opening at least partially overlaps with a gap between two adjacent battery cells.

14. The battery module according to claim 12, characterized in that: There are multiple openings, and the multiple openings are arranged at intervals along the first direction.

15. The battery module according to claim 12, characterized in that: The battery module further includes a transparent member connected to the side plate and covering the opening.

16. The battery module according to claim 15, characterized in that: The transparent member is connected to a side of the side plate facing away from the battery cell.

17. The battery module according to claim 15, characterized in that: The transparent member is arranged in the opening and connected to the inner wall of the opening.

18. A battery, characterized in that: Comprising a battery module as described in any one of claims 1-17.

19. An electrical device, characterized in that: Comprising a battery as claimed in claim 18, the battery is used to provide electrical energy.

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