Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, and the battery device comprises a battery monomer group; one side, facing the battery monomer group, of the side plate is bonded with the battery monomer group, the two ends, in the first direction, of the side plate are correspondingly connected with the end plates at the two ends, in the first direction, of the battery monomer group, and the first direction is the length direction of the side plate. According to the scheme provided by the invention, after the side plates are adhered to the corresponding side surfaces of the battery monomer group, the two ends of each side plate in the first direction are connected to the corresponding end plates, so that the side plates can be quickly fixed to the battery monomer group, the strength of the battery monomer group is improved, the overall mounting efficiency is high, and the production efficiency of the battery device is improved. Meanwhile, a welding means is not needed in the whole mounting process, and a welding area does not need to be designed between the side plate and the battery monomer group, so that the problem of high requirement on dimensional accuracy of a welding surface is solved, and welding equipment and regular maintenance are not needed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device and a power utilization device. BACKGROUND

[0002] A battery generally comprises a lower box body, a battery module accommodated in the lower box body, and an upper cover provided on the lower box body. In order to improve the strength of the battery module, a side plate is generally installed on the side surface of the battery module.

[0003] In the related art, the side plate has the problem of low installation efficiency during installation. UTILITY MODEL CONTENT

[0004] In view of the above problems, the present application provides a battery device and a power utilization device, which can solve the problem of low installation efficiency when the side plate is installed on the side surface of the battery module.

[0005] To solve the above technical problems, in a first aspect, the present application provides a battery device, comprising:

[0006] a battery monomer group;

[0007] a side plate, which is bonded to one side of the battery monomer group, and the two ends of the side plate in a first direction are fixedly connected to end plates on the two ends of the battery monomer group in the first direction, wherein the first direction is the length direction of the side plate.

[0008] In the technical scheme of the present application, the side plate is bonded to the corresponding side surface of the battery monomer group, and then the two ends of the side plate in the first direction are connected to the corresponding end plates, so that the side plate can be quickly fixed to the battery monomer group, the strength of the battery monomer group is effectively improved, the overall installation efficiency is high, and the production efficiency of the battery device is improved. At the same time, since the overall installation process does not need to be welded, and does not need to design a welding area between the side plate and the battery monomer group, the problem of high welding surface size precision requirement is solved, and welding equipment does not need to be arranged and maintained regularly.

[0009] In some embodiments, the battery device further comprises a connecting piece, and the side plate is connected with the end plate through the connecting piece. In this way, the side plate and the end plate are conveniently connected together.

[0010] In some embodiments, the battery device further comprises a bonding piece arranged between the side plate and the side surface of the battery monomer group. In this way, the side plate and the side surface of the battery monomer group are connected together, and the strength of the side surface of the battery monomer group is effectively improved.

[0011] In some embodiments, the side plate is provided with a first groove on a side of the battery monomer group, and the adhesive is located in the first groove. The first groove is provided to facilitate the placement of the adhesive.

[0012] In some embodiments, a blocking portion is provided around the opening side of the first groove.

[0013] Under the condition that the adhesive is located in the first groove, the blocking portion blocks the adhesive from overflowing out of the first groove. In this way, not only can the adhesive overflow out of the first groove be avoided, but also the adhesive in the first groove can be in sufficient contact with the side of the battery monomer group under the limitation of the blocking portion, the bonding area is improved, and the strength of the battery monomer group is further improved.

[0014] In some embodiments, the end plate is provided with a first through hole, and the side plate is provided with a second through hole.

[0015] One end of the connecting piece is located in the first through hole, and the other end of the connecting piece is located in the second through hole. The first through hole and the second through hole are provided to facilitate the connection of the end plate and the side plate by the connecting piece.

[0016] In some embodiments, the connecting piece is in interference fit with the first through hole and the second through hole. In this way, the connecting piece can be stably connected between the end plate and the side plate.

[0017] In some embodiments, the size of the side plate in a second direction can be adjusted, wherein the second direction is the height direction of the side plate. In this way, by adjusting the size of the side plate in the second direction, the use requirements of battery monomer groups of different sizes can be met.

[0018] In some embodiments, the end plate is provided with at least one second groove. The second groove is provided to reduce the weight of the overall battery device, save materials, and reduce costs.

[0019] In some embodiments, the end plate is provided with at least one heat dissipation hole.

[0020] In some embodiments, the end plate is provided with an arc-shaped portion.

[0021] Under the condition that the clamping belt on the battery monomer group is wound around the end plate, the corner on the clamping belt is in contact with the arc-shaped portion. Since the corner on the clamping belt is in contact with the arc-shaped portion, the corner on the clamping belt will not be deformed by the extrusion of the arc-shaped portion, thereby avoiding the breakage of the corner.

[0022] In some embodiments, the end plate is provided with a first limiting platform and a second limiting platform spaced apart in a second direction.

[0023] In the condition that the corner on the clamping belt is in contact with the arc-shaped part, the two sides of the clamping belt in the second direction are in contact with the first limiting table and the second limiting table, wherein the second direction is the height direction of the side plate. In this way, the clamping belt can be prevented from moving in the second direction.

[0024] In a second aspect, the application provides a battery device, including the battery device as any one of the embodiments of the application.

[0025] The above description is only a summary of the technical solutions of the application. In order to enable one skilled in the art to better understand the technical means of the application and implement it according to the contents of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The accompanying drawings are intended to depict only various embodiments of the application and therefore should not be considered to limit the scope of the application. Furthermore, like reference numerals are intended to denote like parts throughout all the drawings. In the drawings:

[0027] Figure 1 A structural schematic diagram of a battery device provided by some embodiments of the application is shown in FIG. 1.

[0028] Figure 2 A structural schematic diagram of a battery provided by some embodiments of the application is shown in FIG. 2.

[0029] Figure 3 A structural schematic diagram of a battery cell provided by some embodiments of the application is shown in FIG. 3.

[0030] Figure 4 A structural schematic diagram of a battery cell group provided by some embodiments of the application is shown in FIG. 4.

[0031] Figure 5 A structural schematic diagram of an end plate provided by some embodiments of the application is shown in FIG. 5.

[0032] Figure 6 A structural schematic diagram of a side plate provided by some embodiments of the application is shown in FIG. 6.

[0033] Figure 7 A structural schematic diagram of a battery device provided by some embodiments of the application is shown in FIG. 1. Figure 5 An enlarged schematic diagram of A in FIG. 1.

[0034] The reference numerals in the detailed description are as follows:

[0035] 1000, vehicle; 100, battery; 200, controller; 300, motor.

[0036] 100, battery; 200, controller; 300, motor.

[0037] 110, housing; 111, first part; 112, second part; 120, battery cell; 121, housing; 122, end cap; 123, electrode assembly;

[0038] 10. Battery cell group;

[0039] 11. End plate; 1101. First through hole; 1102. Second groove; 1103. Heat dissipation hole; 1104. Arc-shaped portion; 1105. First limiting platform; 1106. Second limiting platform;

[0040] 12. Side plate; 1201. Second through hole; 1202. First groove; 1203. Blocking portion;

[0041] 13. Cassette. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein 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 figure descriptions are intended to cover non-exclusive inclusions.

[0044] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0045] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of the embodiments of the present application, the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0048] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0049] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] At present, from the development of market situation, the application of power battery is more and more extensive. The power battery is not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the market demand is also increasing.

[0051] In the related art, the battery generally includes a lower box body, an upper cover and a battery module, wherein the upper cover is connected to the lower box body, and the battery module is arranged in the inner cavity formed by the connection of the upper cover and the lower box body.

[0052] In order to improve the strength of the battery module, a side plate is generally welded on the side of the battery module. This not only requires the arrangement of welding equipment, but also requires the design of a welding area on the side of the battery module in order to ensure welding accuracy, which inevitably affects the installation efficiency of the side plate and reduces the production efficiency of the battery.

[0053] Based on the above considerations, in order to solve the problem of low installation efficiency of the side plate and reduce the production efficiency of the battery, a battery device is designed, which comprises a battery monomer group and a side plate, wherein the side plate is bonded to the side of the battery monomer group, and the two ends of the side plate in the first direction are connected to the end plate on the two ends of the battery monomer group in the first direction. The first direction is the length direction of the side plate.

[0054] During installation, the side plate is bonded to the corresponding side of the battery monomer group, and then the two ends of the side plate in the first direction are connected to the corresponding end plate, so that the side plate can be quickly fixed to the battery monomer group, effectively improving the strength of the battery monomer group, the overall installation efficiency is high, and the production efficiency of the battery device is improved. At the same time, since the overall installation process does not require welding means, nor does it need to design a welding area between the side plate and the battery monomer group, which not only solves the problem of high welding surface size accuracy, but also eliminates the need for welding equipment and regular maintenance.

[0055] The battery device in the present application refers to a single physical module comprising one or more battery monomers to provide higher voltage and capacity. For example, the battery mentioned in the present application can include a battery pack and the like. The battery can be used as a power supply or power supply system for an electric device, which is conducive to improving the overall performance of the battery and facilitating the promotion of the battery.

[0056] The above-mentioned electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft and the like. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles and spaceships, and the like.

[0057] The following embodiments are described with reference to a vehicle 1000 as an example of an electric device according to an embodiment of the present application for convenience of description.

[0058] Please refer to Figure 1 , Figure 1A structural schematic diagram of a vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery 100, which can be arranged at the bottom, head or tail of the vehicle 1000. The battery 100 can be used for power supply of the vehicle 1000, for example, the battery 100 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 being used to control the battery 100 to supply power to the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0059] In some embodiments of the present application, the battery 100 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0060] Please refer to Figure 2 , Figure 2 An exploded view of the battery 100 is provided for some embodiments of the present application. The battery 100 includes a box body 110 and a battery cell 120, and the battery cell 120 is contained in the box body 110. The box body 110 is used to provide a containing space for the battery cell 120, and the box body 110 can adopt various structures. In some embodiments, the box body 110 can include a first part 111 and a second part 112, the first part 111 and the second part 112 are mutually covered, and the first part 111 and the second part 112 jointly define a containing space for containing the battery cell 120. The second part 112 can be a hollow structure with one end open, and the first part 111 can be a plate-shaped structure, the first part 111 being covered on the open side of the second part 112 to jointly define the containing space with the second part 112; the first part 111 and the second part 112 can also be hollow structures with one side open, and the open side of the first part 111 is covered on the open side of the second part 112. Of course, the box body 110 formed by the first part 111 and the second part 112 can be various shapes, such as a cylinder, a cuboid, etc.

[0061] In the battery 100, there may be multiple battery cells 120, and the multiple battery cells 120 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 120. The multiple battery cells 120 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 120 may be housed within the housing 110. Of course, the battery 100 may also be formed by first connecting multiple battery cells 120 in series, in parallel, or in a hybrid connection to form a battery module, and then the multiple battery modules may be connected in series, in parallel, or in a hybrid connection to form an entire battery cell, and then housed within the housing 110. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for electrically connecting the multiple battery cells 120.

[0062] Each battery cell 120 may be a secondary battery or a primary battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 120 may be cylindrical, flat, rectangular, or in other shapes.

[0063] like Figure 3 As shown, the battery cell 120 may include a housing, an electrode assembly 123 and electrode terminals. The housing includes a shell 121 and an end cap 122. The shell 121 has an opening, and the end cap 122 closes the opening to isolate the internal environment of the battery cell 120 from the external environment.

[0064] The housing 121 is a component used to cooperate with the end cap 122 to form the internal environment of the battery cell 120, wherein the formed internal environment can be used to accommodate the electrode assembly 123, electrolyte, and other components. The housing 121 and the end cap 122 can be independent components. The housing 121 can be of various shapes and sizes. Specifically, the shape of the housing 121 can be determined according to the specific shape and size of the electrode assembly 123. The housing 121 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0065] The end cover 122 refers to a component that covers the opening of the shell 121 to isolate the internal environment of the battery cell 120 from the external environment. Without limitation, the shape of the end cover 122 can be adapted to the shape of the shell 121 to fit the shell 121. Optionally, the end cover 122 can be made of a material with certain hardness and strength, such as an aluminum alloy, so that the end cover 122 is less likely to deform when subjected to extrusion collision, allowing the battery cell 120 to have higher structural strength and reliability. The end cover 122 can be provided with functional components such as electrode terminals. The electrode terminals can be used to electrically connect with the electrode assembly 123 for outputting or inputting the electrical energy of the battery cell 120. The material of the end cover 122 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the present application does not make special limitations thereon. In some embodiments, an insulating structure can also be provided on the inner side of the end cover 122, which can be used to isolate the electrical connection components in the shell 121 from the end cover 122 to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0066] The electrode assembly 123 is a component in which electrochemical reactions occur in the battery cell 120. One or more electrode assemblies 123 can be contained in the shell 121. The electrode assembly 123 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and generally has a separator film between the positive electrode sheet and the negative electrode sheet to separate the positive electrode sheet and the negative electrode sheet to avoid internal short circuit of the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have a portion with active material constituting a main body of the electrode assembly 123, and a portion without active material constituting a tab of each of the positive electrode sheet and the negative electrode sheet. The positive electrode tab and the negative electrode tab can be located together at one end of the main body or at two ends of the main body, respectively. During the charging and discharging process of the battery 100, the positive active material and the negative active material react with the electrolyte, and the tabs are connected to the electrode terminals to form a current loop. In addition, the electrode assembly 123 can be a winding structure or a laminated structure.

[0067] According to some embodiments of the present application, Figure 4 is a structural schematic diagram of a battery cell group in the present application, Figure 5 is a structural schematic diagram of an end plate in the present application, Figure 6 is a structural schematic diagram of a side plate in the present application. As Figure 4 shown and in combination with Figure 5 and Figure 6 shown, the present application provides a battery device, which comprises a battery cell group 10 and a side plate 12, wherein one side of the side plate 12 towards the battery cell group 10 is bonded to the battery cell group 10, and both ends of the side plate 12 along a first direction are fixedly connected to the end plates 11 on both ends of the battery cell group 10 along the first direction, and the first direction is the length direction of the side plate 12.

[0068] The first direction in the embodiment can refer to the X-axis direction in FIG. Figure 6

[0069] In the embodiment, the battery monomer group 10 is composed of a plurality of battery cells packaged together by one shell frame. The actual situation can be determined, and the embodiment of the specification is not limited.

[0070] Referring to FIG. Figure 4 As shown, a plurality of battery cells (not labeled in the figure) are combined together to form a cuboid structure. The left and right sides of the cuboid structure are provided with end plates 11. The clamping belt 13 is wound on the plurality of battery cells together with the end plates 11 to fix the plurality of battery cells together with the end plates 11.

[0071] The side plate 12 in the embodiment can be connected to the end plate 11 by a bolt, or the side plate 12 is clamped on the end plate 11. The actual situation can be determined, and the embodiment of the specification is not limited.

[0072] In the embodiment, the length and height of the side plate 12 can be equal to the length and height of the battery monomer group 10. Of course, it can be understood that the height of the side plate 12 can also be less than the height of the battery monomer group 10. The actual situation can be determined, and the embodiment of the specification is not limited.

[0073] In the installation, after the side plate 12 is bonded to the corresponding side of the battery monomer group 10, the two ends of the side plate 12 along the first direction are connected to the corresponding end plate 11.

[0074] In the technical scheme of the embodiment of the application, after the side plate 12 is bonded to the corresponding side of the battery monomer group 10, the two ends of the side plate 12 along the first direction are connected to the corresponding end plate 11. Thus, the side plate 12 can be quickly fixed to the battery monomer group 10, the strength of the battery monomer group 10 is effectively improved, the overall installation efficiency is high, and the production efficiency of the battery device is improved. At the same time, since the overall installation process does not need to be welded, and does not need to design a welding area between the side plate 12 and the battery monomer group 10, the problem of high welding surface size precision requirement is solved, and welding equipment does not need to be arranged and maintained regularly.

[0075] According to some embodiments of the application, the battery device further comprises a connecting piece (not shown in the figure), wherein the side plate 12 is connected to the end plate 11 through the connecting piece.

[0076] In the embodiment, the connecting piece can be a bolt, a double-layer pull rivet nut, a core-pulling rivet, etc. The actual situation can be determined, and the embodiment of the specification is not limited.

[0077] ​The side plate 12 and the end plate 11 can be conveniently connected together through the connecting piece, and the installation efficiency is further improved.

[0078] According to some embodiments of the present application, the battery device further comprises an adhesive (not labeled in the figure) arranged between the side plate 12 and the side of the battery monomer group 10.

[0079] In the embodiment, the adhesive can be structural glue, double-sided adhesive tape, etc. For the convenience of description, the adhesive is taken as structural glue in the following description.

[0080] In the embodiment, the adhesive can be structural glue, double-sided adhesive tape, etc. For the convenience of description, the adhesive is taken as structural glue in the following description.

[0081] According to some embodiments of the present application, as shown in Figure 6 the side of the side plate 12 facing the battery monomer group 10 is provided with a first groove 1202, and the adhesive is located in the first groove 1202.

[0082] Since the adhesive in the embodiment is structural glue, the structural glue is in a fluid state, so that when the structural glue is applied to the side of the side plate 12 facing the battery monomer group 10, the structural glue can be filled in the first groove 1202. When the first groove 1202 is filled with structural glue, the side of the side plate 12 facing the battery monomer group 10 is attached to the side of the battery monomer group 10, so that the side plate 12 is bonded to the side of the battery monomer group 10.

[0083] In the embodiment, the first groove 1202 is arranged on the side of the side plate 12 facing the battery monomer group 10, so that the structural glue is conveniently filled in the side plate 12.

[0084] According to some embodiments of the present application, as shown in Figure 6 the first groove 1202 is provided with a blocking portion 1203 around the opening side; under the condition that the adhesive is located in the first groove 1202, the blocking portion 1203 blocks the adhesive from overflowing out of the first groove 1202.

[0085] The blocking portion 1203 in the embodiment can be a boss or a stop ring arranged around the opening side of the first groove 1202, which can be determined according to the actual situation, and the embodiments of the present application are not limited in this regard.

[0086] Since the bonding member is a structural adhesive in a fluid state, when the structural adhesive fills the first groove 1202, the blocking portion 1203 can prevent the structural adhesive from overflowing out of the first groove 1202 when the side plate 12 is attached to the side surface of the battery cell group 10 on the side of the side plate 12 facing the battery cell group 10. At this time, the structural adhesive in the first groove 1202 can be in full contact with the side surface of the battery cell group 10 corresponding to the structural adhesive, thereby increasing the bonding area to stably bond the side plate 12 to the battery cell group 10 and improve the strength of the battery cell group 10.

[0087] According to some embodiments of the present application, as shown in Figure 5 and in combination with Figure 6 , the end plate 11 is provided with a first through hole 1101, and the side plate 12 is provided with a second through hole 1201; one end of the connecting member is located in the first through hole 1101, and the other end of the connecting member is located in the second through hole 1201.

[0088] In the present embodiment, when the connecting member is a bolt, the first through hole 1101 and the second through hole 1201 correspond to threaded holes; when the connecting member is a self-plugging rivet, the first through hole 1101 and the second through hole 1201 correspond to rivet holes, which can be determined according to actual conditions, and the present embodiment does not limit this.

[0089] The present embodiment provides the first through hole 1101 on the end plate 11 and the second through hole 1201 on the side plate 12, so that the side plate 12 and the end plate 11 can be conveniently connected together by the connecting member passing through the corresponding first through hole 1101 and second through hole 1201.

[0090] According to some embodiments of the present application, the connecting member is in interference fit with the first through hole 1101 and the second through hole 1201.

[0091] Since the connecting member is in interference fit with the first through hole 1101 and the second through hole 1201, the connecting member can be stably connected between the end plate 11 and the side plate 12 after the connecting member is inserted into the corresponding first through hole 1101 and second through hole 1201, thereby avoiding the connecting member from shaking relative to the first through hole 1101 and the second through hole 1201.

[0092] According to some embodiments of the present application, as shown in Figure 6 , the side plate 12 is adjustable in a second direction, wherein the second direction is the height direction of the side plate 12.

[0093] The second direction in the present embodiment can refer to the Y-axis direction in Figure 6 .

[0094] The side plate 12 in the embodiment includes a plurality of clamping plates (not labeled in the figure), each clamping plate has the same structure, and two adjacent clamping plates can be clamped together along the Y-axis direction, for example, two adjacent clamping plates can be connected together along the Y-axis direction through the structure of the protrusion and the clamping groove. In this way, by assembling or disassembling the clamping plates along the Y-axis direction, the size of the overall side plate 12 along the Y-axis direction can be adjusted.

[0095] It should be noted that the structure of the side plate described above is only an example, and in other alternative schemes, other structures can also be used, for example, the side plate includes a plurality of clamping plates and a clamping strip, and two adjacent clamping plates are connected through the clamping strip. The specific structure of the side plate is not specially limited in the present application, as long as the structure can achieve the purpose of the present application.

[0096] In the embodiment, since the size of the side plate 12 along the Y-axis direction is adjustable, in this way, by adjusting the size of the side plate 12 along the Y-axis direction, the use requirements of different sizes of battery monomer groups can be met.

[0097] According to some embodiments of the present application, as shown in Figure 5 The end plate 11 is provided with at least one second groove 1102.

[0098] In the embodiment, three, four or the like second grooves 1102 can be provided on the end plate 11, and the specific number can be determined according to actual conditions, which is not limited in the embodiment of the present application.

[0099] In the embodiment, the second groove 1102 is provided on the end plate 11, so that the weight of the end plate 11 can be reduced, thereby facilitating the reduction of the weight of the overall battery device, and at the same time, the material is saved, and the cost is reduced.

[0100] According to some embodiments of the present application, as shown in Figure 5 The end plate 11 is provided with at least one heat dissipation hole 1103.

[0101] In the embodiment, two, three or the like heat dissipation holes 1103 can be provided on the end plate 11, and the specific number can be determined according to actual conditions, which is not limited in the embodiment of the present application.

[0102] In the embodiment, the heat dissipation hole 1103 is provided on the end plate 11, so as to facilitate the heat dissipation of the battery cell group 10.

[0103] According to some embodiments of the present application, as shown in Figure 7 and in combination with Figure 4 , Figure 5 The end plate 11 is provided with an arc-shaped portion 1104; under the condition that the clamping belt 13 on the battery monomer group 10 is wound to the end plate 11, the corner on the clamping belt 13 is in contact with the arc-shaped portion 1104.

[0104] The arc-shaped portion 1104 in the embodiment can be an arc-shaped surface structure arranged on the end plate 11, and can be determined according to actual conditions, which is not limited in the embodiment.

[0105] In use, when the card band 13 is wound on the end plate 11, the corner on the card band 13 is in contact with the arc-shaped portion 1104. At this time, the corner on the card band 13 is smoothly transitioned with the arc-shaped portion 1104, and the corner on the card band 13 will not be deformed by extrusion of the arc-shaped portion 1104, so that stress concentration and fracture of the corner can be avoided.

[0106] According to some embodiments of the present application, as shown in Figure 7 the end plate 11 is provided with a first limiting table 1105 and a second limiting table 1106 along the second direction at intervals; under the condition that the corner on the card band 13 is in contact with the arc-shaped portion 1104, the two sides of the card band 13 along the second direction correspondingly abut against the first limiting table 1105 and the second limiting table 1106, wherein the second direction is the height direction of the side plate 12.

[0107] The second direction in the embodiment can refer to the Y-axis direction in Figure 6 .

[0108] The first limiting table 1105 and the second limiting table 1106 are arranged on the end plate 11 along the Y-axis direction at intervals in the embodiment, and when the corner on the card band 13 is in contact with the arc-shaped portion 1104, the two sides of the card band 13 along the Y-axis direction correspondingly abut against the first limiting table 1105 and the second limiting table 1106. In this way, under the limiting effect of the first limiting table 1105 and the second limiting table 1106, the card band 13 can be prevented from moving in the Y-axis direction.

[0109] The present application also provides a power consumption device comprising the battery device according to any one of the embodiments of the present application.

[0110] The specific structure of the battery device in the embodiment is referred to the above-mentioned embodiments. Since all the technical solutions of the above-mentioned embodiments are adopted in the power consumption device, at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are possessed, which will not be repeated here.

[0111] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Battery cell group; A side plate, wherein the side of the side plate facing the battery cell group is bonded to the battery cell group, and the two ends of the side plate along the first direction are fixedly connected to the end plates on the two ends of the battery cell group along the first direction, wherein the first direction is the length direction of the side plate.

2. The battery device according to claim 1, wherein: The battery device further includes a connecting member, and the side plate is connected to the end plate via the connecting member.

3. The battery device according to claim 2, characterized in that The battery device further includes an adhesive member disposed between the side plate and a side surface of the battery cell group.

4. The battery device according to claim 3, characterized in that A first groove is provided on a side of the side plate facing the battery cell group, and the adhesive is located in the first groove.

5. The battery device according to claim 4, characterized in that A blocking portion is provided around the opening side of the first groove; Under the condition that the adhesive is located in the first groove, the blocking portion blocks the adhesive from overflowing from the first groove.

6. The battery device according to claim 2, wherein: The end plate is provided with a first through hole, and the side plate is provided with a second through hole; One end of the connecting member is located in the first through hole, and the other end of the connecting member is located in the second through hole.

7. The battery device according to claim 6, characterized in that The connecting member is interference-fitted with the first through hole and the second through hole.

8. The battery device according to any one of claims 1 to 6, characterized in that: The size of the side panel is adjustable along a second direction, wherein the second direction is a height direction of the side panel.

9. The battery device according to claim 1, wherein: At least one second groove is provided on the end plate.

10. The battery device according to claim 1, wherein: At least one heat dissipation hole is provided on the end plate.

11. The battery device according to claim 1, 9 or 10, characterized in that: The end plate is provided with an arc portion; When the tape on the battery cell group is wound around the end plate, the corners of the tape are in contact with the arc-shaped portion.

12. The battery device according to claim 11, wherein: The end plate is provided with a first limiting platform and a second limiting platform spaced apart along the second direction; Under the condition that the corners on the cassette are in contact with the arc portion, the two sides of the cassette along the second direction are in contact with the first and second limit platforms, respectively, wherein the second direction is the height direction of the side plate.

13. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1 to 12.

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