Battery device and electric equipment

Abstract

According to the battery device and the electric equipment, one of two matched surfaces of a cover body and a base is provided with a plug connector, and the other one is provided with a slot. When the cover body is matched on the base, the plug connector is inserted into the slot; and after insertion, the insertion slot is filled with a bonding piece, so that the bonding piece is bonded between the insertion piece and the slot wall of the insertion slot. According to the design, the plug connector is matched with the slot, so that the sealing contact area between the cover body and the base is increased, the sealing strength between the cover body and the base is enhanced, and even if the cover body or the base tilts and deforms, at least part of the plug connector is still reserved in the slot, so that the bonding piece is still sealed between the plug connector and the slot wall of the slot; effective sealing is realized, the probability of sealing failure caused by deformation influence is reduced, and the reliability of the battery device is improved.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of battery technology, the sealing performance of the battery is also increasingly high. The traditional battery usually adopts a sealing gasket or a sealing strip to seal the box body. However, such a sealing structure is easily affected by the deformation of the box body, leading to sealing failure of the box body and reducing the reliability of the battery. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a battery device and a power consumption equipment to reduce the probability of sealing failure caused by deformation, achieve effective sealing, and improve the reliability of the battery device.

[0004] In a first aspect, the present application provides a battery device, which comprises: a battery monomer; a box body comprising a cover body and a base, the cover body being arranged on the base to form a containing space, and the battery monomer being accommodated in the containing space; wherein the box body further comprises a sealing structure, the sealing structure comprising a plug-in part, a slot, and an adhesive part, one of the two surfaces of the cover body and the base that cooperate with each other is provided with the plug-in part, and the other is provided with the slot, the plug-in part is inserted into the slot, and the adhesive part is filled between the plug-in part and the slot wall of the slot.

[0005] The above-mentioned battery device is designed in such a way that one of the two surfaces of the cover body and the base that cooperate with each other is provided with the plug-in part, and the other is provided with the slot. When the cover body is arranged on the base, the plug-in part is inserted into the slot, and then the adhesive part is filled into the slot, so that the adhesive part is adhered between the plug-in part and the slot wall. In this way, by cooperating the plug-in part with the slot, the sealing contact area between the cover body and the base is increased, the sealing strength between the cover body and the base is enhanced, the probability of sealing failure caused by deformation is reduced, effective sealing is achieved, and the reliability of the battery device is improved.

[0006] In some embodiments, the plug-in part is located in the slot and divides the slot into a first sub-slot and a second sub-slot that communicate with each other, the first sub-slot is located on the side of the plug-in part facing the containing space, the second sub-slot is located on the side of the plug-in part facing away from the containing space, and the adhesive part is filled in the first sub-slot and the second sub-slot. In this way, the first sub-slot and the second sub-slot are formed on both sides of the plug-in part, so that the plug-in part is adhered in the first sub-slot and the second sub-slot by the adhesive part, the adhesive area is increased, and the sealing effect is further improved. At the same time, the first sub-slot is arranged on the side of the plug-in part facing the containing space, which facilitates to reduce the assembly difficulty and improve the assembly efficiency.

[0007] In some embodiments, the slot wall of the slot includes a bottom wall arranged towards the slot opening of the slot, and the connecting gap is between the plug and the bottom wall, and the first sub-slot is communicated with the second sub-slot through the connecting gap. In this way, the connecting gap is left between the plug and the bottom wall, so that the first sub-slot and the second sub-slot are kept in communication, and the adhesive can be smoothly filled into the first sub-cavity and the second sub-cavity to achieve effective sealing and bonding.

[0008] In some embodiments, the slot wall of the slot includes a first side wall and a second side wall located on both sides of the slot opening of the slot, and the first side wall is closer to the accommodation space than the second side wall, and the first sub-slot is formed between the first side wall and the plug, and the second sub-slot is formed between the second side wall and the plug. In this way, the first side wall and the second side wall are introduced, which facilitates the stable bonding of the plug between the first side wall and the second side wall on both sides through the adhesive, and improves the bonding and sealing effect.

[0009] In some embodiments, the distance between the first side wall and the plug is D, and 0.5mm≤D≤1.0mm. In this way, the distance between the first side wall and the plug is controlled between 0.5mm and 1.0mm, which can effectively fill the first sub-slot with the adhesive while effectively absorbing the size tolerance between the cover and the base under the control of the overall reasonable size of the box body.

[0010] In some embodiments, the sealing structure further includes an abutting member arranged in one of the cover and the base and abutting against the other, and the abutting member is located on the side of the slot facing the accommodation space. In this way, the abutting member is introduced to effectively block the adhesive from flowing into the accommodation space, reducing the probability of the adhesive entering the box.

[0011] In some embodiments, the abutting member includes a fitting surface for fitting with one of the two surfaces of the cover and the base matched with each other. In this way, the fitting surface is introduced to improve the tightness between the abutting member and the cover or the base, further effectively reducing the risk of the adhesive flowing into the accommodation space.

[0012] In some embodiments, the cover or the base includes a bottom portion and first and second side portions spaced apart on the bottom portion, and the first side portion is closer to the accommodation space than the second side portion, and the first and second side portions and the bottom portion enclose to form the slot. In this way, the bottom portion, the first side portion and the second side portion are arranged on the cover or the base to facilitate the formation of the slot structure on the cover or the base.

[0013] In some embodiments, the slot and the plug are both annularly arranged along the outer periphery of the accommodation space. In this way, the slot and the plug are designed as annular structures, so that the slot and the plug cooperate to effectively seal the circumferential direction of the accommodation space, further improving the sealing performance of the battery device.

[0014] In some embodiments, the plug-in part is integrated with the cover or the base. In this way, the plug-in part is integrated with the cover or the base, which improves the strength of the structure and is conducive to improving the stability of the overall structure of the box. At the same time, it is also conducive to simplifying the processing technology of the box.

[0015] In some embodiments, the base comprises a bottom plate and a frame, the frame is arranged on the bottom plate, the cover is arranged on the frame, and the cover, the frame and the bottom plate form a containing space. The plug-in part is arranged on one of the two surfaces of the cover and the frame that match with each other, and the plug-in slot is arranged on the other of the two surfaces of the cover and the frame that match with each other. In this way, the base is designed as a bottom plate and a frame, which is convenient for sealing cooperation with the cover to form a closed containing space.

[0016] In a second aspect, the application provides a battery device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structural schematic diagram of a vehicle is provided for some embodiments of the application.

[0018] Figure 2 The exploded view of the battery device is provided for some embodiments of the application.

[0019] Figure 3 The structural schematic diagram of the box is provided for some embodiments of the application.

[0020] Figure 4 The structural schematic diagram of the box is provided for some embodiments of the application. Figure 3 The sectional view of the partial structure in FIG. 4 is provided.

[0021] Figure 5 The structural schematic diagram of the box is provided for some embodiments of the application. Figure 4 The structural schematic diagram of the box is provided for some embodiments of the application.

[0022] Figure 6 The structural schematic diagram of the box is provided for some embodiments of the application.

[0023] Figure 7 The sectional view of the partial structure in FIG. 4 is provided. Figure 6 The sectional view of the partial structure in FIG. 4 is provided.

[0024] Figure 8 The structural schematic diagram of the base in FIG. 4 is provided. Figure 3 The structural schematic diagram of the base in FIG. 4 is provided.

[0025] 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, battery cell; 20, case; 21, cover; 211, accommodation space; 22, base; 221, bottom plate; 222, frame; 23, sealing structure; 231, plug; 232, slot; 23a, notch; 23b, bottom wall; 23c, first side wall; 23d, second side wall; 233, first sub-slot; 234, second sub-slot; 235, communication gap; 236, adhesive; 237, abutting member; 23e, fitting surface; 24, bottom; 25, first side; 26, second side. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be noted that the following detailed description is intended only to be illustrative and not restrictive of the present application.

[0027] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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 limiting the present application.

[0028] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0029] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms 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, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless specifically defined otherwise, if there is a description of the first feature "on" or "below" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0031] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0032] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of water power, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment and aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0033] The battery device generally comprises a box body and a battery cell arranged in the box body. The box body is usually composed of a cover body and a base. In order to seal the cover body and the base, a sealing gasket or a sealing strip is arranged between the cover body and the base, and the cover body and the base are locked by bolts or rivets. However, when the cover body or the base is deformed, since the cover body and the base are matched by the sealing gasket or the sealing strip, after the cover body or the base is warped, a gap is easily generated between the cover body and the sealing gasket or the sealing strip, thereby causing the sealing failure of the box body and reducing the reliability of the battery device.

[0034] Therefore, in order to solve the problem that the conventional battery device is easily affected by deformation and causes sealing failure, the battery device is provided. In two surfaces matched with each other of the cover body and the base, one of the surfaces is provided with a plug-in part, and the other of the surfaces is provided with a slot. When the cover body is matched with the base, the plug-in part is inserted into the slot. After the insertion, an adhesive is filled into the slot, so that the adhesive is adhered between the plug-in part and the slot wall. In this way, by matching the plug-in part with the slot, the sealing contact area between the cover body and the base is increased, and the sealing strength between the cover body and the base is enhanced. Even if the cover body or the base is warped, the plug-in part is at least partially retained in the slot, so that the adhesive is still sealed between the plug-in part and the slot wall, effective sealing is achieved, the probability of sealing failure caused by deformation is reduced, and the reliability of the battery device is improved. In addition, compared with the conventional sealing mode of bolt locking and sealing gasket or sealing strip, the assembly is simple, and the cost is low.

[0035] The battery cell disclosed in the embodiments of the present application can be used in, but is not limited to, an electric device such as a vehicle, a ship or an aircraft. The power supply system of the electric device can be composed of the battery cell, the battery device and the like disclosed in the present application.

[0036] The embodiments of the present application provide an electric device using the battery device as a power supply. The electric device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft and the like. The electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy and an electric aircraft toy and the like. The spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft and the like.

[0037] In the following embodiments, a vehicle 1000 is taken as an example for convenience of description.

[0038] 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 vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom 24 or the head or tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation and driving.

[0039] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the 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.

[0040] Please refer to Figure 2 , Figure 2 An exploded view of the battery device 100 is provided for some embodiments of the present application. The battery device 100 includes a box 20 and a battery cell 10, and the battery cell 10 is contained in the box 20. Among them, the box 20 is used to provide a containing space 211 for the battery cell 10, and the box 20 can adopt various structures. In some embodiments, the box 20 can include a first part and a second part, and the first part and the second part are covered with each other, and the first part and the second part jointly define the containing space 211 for containing the battery cell 10. The second part can be a hollow structure with one end open, and the first part can be a plate structure, and the first part is covered on the open side of the second part to make the first part and the second part jointly define the containing space 211; the first part and the second part can also be hollow structures with one side open, and the open side of the first part is covered on the open side of the second part. Of course, the box 20 formed by the first part and the second part can be various shapes, such as a cylinder, a cuboid, etc.

[0041] In the battery device 100, the battery cells 10 can be multiple, and the multiple battery cells 10 can be connected in series or in parallel or in a mixed connection, where the mixed connection means that the multiple battery cells 10 are connected in series and in parallel. The multiple battery cells 10 can be directly connected in series or in parallel or in a mixed connection, and then the multiple battery cells 10 are accommodated in the box 20 as a whole. Of course, the battery device 100 can also be that the multiple battery cells 10 are first connected in series or in parallel or in a mixed connection to form a battery module, and then the multiple battery modules are connected in series or in parallel or in a mixed connection to form a whole and are accommodated in the box 20. The battery device 100 can also include other structures, for example, the battery device 100 can also include a current collecting component for realizing the electrical connection between the multiple battery cells 10.

[0042] Each battery cell 10 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 10 can be in the shape of a cylinder, a flat body, a cuboid or other shapes.

[0043] According to some embodiments of the present application, referring to Figures 3 to 5 , the present application provides a battery device 100, which comprises a battery cell 10, a box 20 and a sealing structure 23. The box 20 comprises a cover 21 and a base 22, and the cover 21 is arranged on the base 22 to form an accommodation space 211, and the battery cell 10 is accommodated in the accommodation space 211. The sealing structure 23 comprises a plug 231, a slot 232 and an adhesive 236. Among the two surfaces of the cover 21 and the base 22 which cooperate with each other, one of the two surfaces is provided with the plug 231, and the other of the two surfaces is provided with the slot 232. The plug 231 is inserted into the slot 232, and the adhesive 236 is filled between the slot wall of the plug 231 and the slot 232.

[0044] The battery cell 10 refers to the smallest unit of the battery device 100, which comprises a shell and an electrode assembly accommodated in the shell. The electrode assembly is a component in which an electrochemical reaction occurs in the battery cell 10, and is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is usually arranged between the positive electrode sheet and the negative electrode sheet.

[0045] The cover 21 and the base 22 are two parts of the box 20, and after the two parts are combined, the accommodation space 211 for accommodating the battery cell 10 can be formed. In some embodiments, in order to improve the bonding force between the cover 21 and the base 22, bolts, rivets or other components can be used to lock the cover 21 and the base 22.

[0046] The slot 232 refers to a structure formed by recessing one of the two surfaces of the cover 21 and the base 22 towards the inside, while the plug 231 refers to a structure formed by protruding the other of the two surfaces of the cover 21 and the base 22 towards the outside. When the cover 21 is fitted on the base 22, the plug 231 is inserted into the slot 232. At this time, the slot 232 can be filled with the adhesive 236, so that the plug 231 is tightly connected with the wall of the slot 232; at the same time, the gap between the cover 21 and the base 22 is sealed, so as to provide a sealed environment for the battery monomer 10. In addition, please refer to Figure 4 and Figure 5 , the plug 231 can be arranged on the cover 21, and the slot 232 can be arranged on the base 22; or please refer to Figure 6 and Figure 7 , the plug 231 can be arranged on the base 22, and the slot 232 can be arranged on the cover 21.

[0047] The adhesive 236 can be selected in various ways, such as but not limited to structural glue, silicone glue, and the like.

[0048] In addition, the slot 232 and the plug 231 can be arranged on one side of the box 20, on opposite sides of the box 20, or on all four sides of the box 20. For example, taking a square box 20 as an example, the slot 232 can be designed on opposite sides of the cover 21 or the base 22, and the other two sides of the cover 21 or the base 22 can be fixed by using other sealing structures 23, such as sealing strips, buckle structures, and the like; or the slot 232 can be arranged on all four sides of the cover 21 or the base 22, forming a ring-shaped slot structure.

[0049] In this way, by matching the plug 231 with the slot 232, the sealing contact area between the cover 21 and the base 22 is increased, the sealing strength between the cover 21 and the base 22 is enhanced, the probability of sealing failure caused by shape deformation is reduced, effective sealing is achieved, and the reliability of the battery device 100 is improved.

[0050] According to some embodiments of the present application, optionally, please refer to Figure 4 and Figure 5 , the plug 231 is located in the slot 232 and divides the slot 232 into a first sub-slot 233 and a second sub-slot 234 which are in communication with each other, the first sub-slot 233 is located on the side of the plug 231 facing the accommodation space 211, the second sub-slot 234 is located on the side of the plug 231 facing away from the accommodation space 211, and the adhesive 236 is filled in the first sub-slot 233 and the second sub-slot 234.

[0051] The plug 231 is inserted into the slot 232, and the slot 232 is divided into the first sub-slot 233 and the second sub-slot 234 which are in communication with each other, and the first sub-slot 233 is closer to the accommodating space 211 than the second sub-slot 234. When the adhesive 236 is filled in the second sub-slot 234, the adhesive 236 can flow from the second sub-slot 234 into the first sub-slot 233, so that the adhesive 236 is adhered in the first sub-slot 233 and the second sub-slot 234.

[0052] The communication between the first sub-slot 233 and the second sub-slot 234 can be achieved in various ways, such as: a gap is provided between the bottom 24 of the plug 231 and the bottom 24 of the slot 232; or a through hole is provided in the plug 231 to communicate the first sub-slot 233 and the second sub-slot 234.

[0053] In addition, the first sub-slot 233 is arranged on the side of the plug 231 facing the accommodating space 211, so that a gap is provided between the plug 231 and the slot wall of the slot 232 close to the accommodating space 211, which can absorb the dimensional tolerance between the cover 21 and the base 22, reduce the assembly difficulty between the cover 21 and the base 22, and improve the assembly efficiency.

[0054] In this way, the first sub-slot 233 and the second sub-slot 234 are formed on both sides of the plug 231, so that the plug 231 is adhered in the first sub-slot 233 and the second sub-slot 234 by the adhesive 236, the adhesive area is increased, and the sealing effect is further improved; at the same time, the first sub-slot 233 is arranged on the side of the plug 231 facing the accommodating space 211, which facilitates reducing the assembly difficulty and improving the assembly efficiency.

[0055] According to some embodiments of the present application, optionally, please refer to Figure 5 The slot wall of the slot 232 includes a bottom wall 23b arranged towards the slot opening 23a of the slot 232, and a communication gap 235 is provided between the plug 231 and the bottom wall 23b, and the first sub-slot 233 communicates with the second sub-slot 234 through the communication gap 235.

[0056] The bottom wall 23b refers to the slot wall of the slot 232 opposite to the slot opening 23a, and the communication gap 235 is provided between the plug 231 and the bottom wall 23b, so that when the adhesive 236 is filled, the adhesive 236 can flow from the second sub-slot 234 and the communication gap 235 into the first sub-slot 233 in sequence. Of course, the adhesive 236 can also flow from the first sub-slot 233 and the communication gap 235 into the second sub-slot 234 in sequence.

[0057] In this way, the communication gap 235 is left between the plug-in part 231 and the bottom wall 23b, so that the first sub-body groove 233 and the second sub-body groove 234 are kept in communication, and the adhesive 236 can be smoothly filled into the first sub-body cavity and the second sub-body cavity, so as to realize effective sealing and bonding.

[0058] According to some embodiments of the present application, optionally, referring to Figure 5 The groove wall of the insertion groove 232 includes the first side wall 23c and the second side wall 23d located on both sides of the slot opening 23a of the insertion groove 232, the first side wall 23c is closer to the accommodation space 211 than the second side wall 23d, the first side wall 23c and the plug-in part 231 form the first sub-body groove 233, and the second side wall 23d and the plug-in part 231 form the second sub-body groove 234.

[0059] The first side wall 23c and the second side wall 23d refer to the two groove walls of the insertion groove 232 located on both sides of the slot opening 23a, and of course, the first side wall 23c and the second side wall 23d are also located on both sides of the plug-in part 231. When the plug-in part 231 is inserted into the insertion groove 232, the plug-in part 231 is located between the first side wall 23c and the second side wall 23d, and the first side wall 23c is located on the side of the plug-in part 231 away from the accommodation space 211, and the second side wall 23d is located on the side of the plug-in part 231 facing the accommodation space 211. At the same time, when the adhesive 236 is filled into the insertion groove 232, the first side wall 23c and the plug-in part 231 are bonded by the adhesive 236, and the second side wall 23d and the plug-in part 231 are connected by the adhesive 236.

[0060] In this way, the introduction of the first side wall 23c and the second side wall 23d facilitates the stable bonding of the plug-in part 231 between the first side wall 23c and the second side wall 23d on both sides by the adhesive 236, and improves the bonding and sealing effect.

[0061] According to some embodiments of the present application, optionally, referring to Figure 5 The distance between the first side wall 23c and the plug-in part 231 is denoted as D, wherein 0.5mm≤D≤1.0mm.

[0062] If the distance D between the first side wall 23c and the plug-in part 231 is too small, it will affect the filling of the adhesive 236 in the first sub-body groove 233, and the size tolerance absorbing capacity between the cover body 21 and the base 22 is small; if it is too large, it will increase the overall size of the box body 20. Therefore, the distance D can be between 0.5mm and 1.0mm, such as but not limited to 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, etc.

[0063] In this way, the spacing between the first side wall 23c and the plug 231 is controlled to be between 0.5mm and 1.0mm, and in the case of controlling the overall reasonable size of the box body 20, the adhesive 236 can effectively fill the first split groove 233, and can effectively absorb the dimensional tolerance between the cover 21 and the base 22.

[0064] According to some embodiments of the present application, optionally, referring to Figure 5 The sealing structure 23 further comprises an abutting member 237, which is arranged on one of the cover 21 and the base 22 and abuts against the other one, and is located on the side of the insertion groove 232 facing the accommodation space 211.

[0065] The abutting member 237 is located on the side of the insertion groove 232 facing the accommodation space 211, that is, the abutting member 237 is located between the insertion groove 232 and the accommodation space 211, so that when the adhesive 236 overflows out of the insertion groove 232 during the filling process, the abutting member 237 can block the adhesive 236, reducing the flow of the adhesive 236 into the accommodation space 211. In order to achieve a better blocking effect, the abutting member 237 can be annularly arranged along the outer periphery of the accommodation space 211.

[0066] In addition, the abutting member 237 can be connected to the cover 21 or the base 22 in various ways, such as, but not limited to, welding, clamping, pin connection, bolt connection, etc. The abutting member 237 can also be designed as an integrated structure with the cover 21 or the base 22.

[0067] In this way, the introduction of the abutting member 237 effectively blocks the flow of the adhesive 236 into the accommodation space 211, reducing the probability of the adhesive 236 entering the box body 20.

[0068] According to some embodiments of the present application, optionally, referring to Figure 5 The abutting member 237 comprises a fitting surface 23e, which is used to fit with one of the two surfaces of the cover 21 and the base 22.

[0069] The fitting surface 23e of the abutting member 237 is fitted on the cover 21 or the base 22, so that the combination between the abutting member 237 and the cover 21 or the base 22 is more compact.

[0070] In this way, the introduction of the fitting surface 23e improves the compactness between the abutting member 237 and the cover 21 or the base 22, further effectively reducing the risk of the adhesive 236 flowing into the accommodation space 211.

[0071] According to some embodiments of the present application, optionally, referring to Figure 5The cover 21 or the base 22 comprises a bottom 24 and a first side 25 and a second side 26 which are spaced apart from the bottom 24, and the first side 25 is closer to the accommodation space 211 than the second side 26, and the first side 25, the second side 26 and the bottom 24 form the insertion slot 232.

[0072] The bottom 24, the first side 25 and the second side 26 refer to the structures on the cover 21 or the base 22, and can form the insertion slot 232. Since the insertion slot 232 is arranged on one of the two surfaces of the cover 21 and the base 22 which are matched with each other, the side wall, the first side 25 and the second side 26 are also arranged on one of the two surfaces of the cover 21 and the base 22 which are matched with each other. In some embodiments, the bottom 24, the first side 25 and the second side 26 are integrated structures.

[0073] In this way, the bottom 24, the first side 25 and the second side 26 arranged on the cover 21 or the base 22 facilitate the formation of the structure of the insertion slot 232 on the cover 21 or the base 22.

[0074] According to some embodiments of the present application, optionally, referring to Figure 8 The insertion slot 232 and the insertion piece 231 are arranged annularly along the outer periphery of the accommodation space 211.

[0075] The insertion slot 232 and the insertion piece 231 are arranged annularly along the outer periphery of the accommodation space 211, which means that the insertion slot 232 is an annular slot and the insertion piece 231 is also an annular protruding structure.

[0076] In this way, the insertion slot 232 and the insertion piece 231 are designed as annular structures, so that the insertion slot 232 and the insertion piece 231 cooperate to effectively seal the circumferential direction of the accommodation space 211, further improving the sealing performance of the battery device 100.

[0077] According to some embodiments of the present application, optionally, referring to Figure 4 And Figure 7 The insertion piece 231 and the cover 21 or the base 22 are integrated structures.

[0078] The insertion piece 231 and the cover 21 or the base 22 are integrated structures, which can be formed in various ways, such as but not limited to injection molding, die casting, stamping, 3D printing, etc.

[0079] In this way, the insertion piece 231 and the cover 21 or the base 22 are integrated structures, which improves the strength of the structure and is conducive to improving the stability of the overall structure of the box body 20; at the same time, it is also conducive to simplifying the processing technology of the box body 20.

[0080] According to some embodiments of the present application, optionally, referring to Figure 8The base 22 comprises a bottom plate 221 and a frame 222, the frame 222 is arranged on the bottom plate 221, the cover 21 is arranged on the frame 222, and the cover 21, the frame 222 and the bottom plate 221 form a containing space 211, the plug-in part 231 is arranged on one of the two surfaces of the cover 21 and the frame 222, and the slot 232 is arranged on the other surface of the cover 21 and the frame 222.

[0081] The bottom plate 221 refers to a structure on the base 22 for supporting the battery monomer 10, and the frame 222 refers to a structure on the base 22 for surrounding the periphery of the battery monomer 10. When the cover 21 is arranged on the frame 222, the plug-in part 231 is inserted into the slot 232 and is bonded to the slot wall of the slot 232 by the bonding part 236. The plug-in part 231 can be arranged on the cover 21, and the slot 232 is arranged on the side of the frame 222 away from the bottom plate 221; or the plug-in part 231 can be arranged on the side of the frame 222 away from the bottom plate 221, and the slot 232 is arranged on the cover 21.

[0082] In this way, the base 22 is designed as the bottom plate 221 and the frame 222, which facilitates sealing cooperation with the cover 21 to form a closed containing space 211.

[0083] According to some embodiments of the present application, the present application provides a battery device 100.

[0084] According to some embodiments of the present application, please refer to Figures 3 to 8 The present application provides a battery device 100, which comprises a battery monomer 10, a box 20 and a sealing structure 23. The box 20 comprises a bottom plate 221, a frame 222 and a cover 21, the frame 222 is arranged on the bottom plate 221, the cover 21 is arranged on the frame 222, and the cover 21, the frame 222 and the bottom plate 221 form a containing space 211, and the battery monomer 10 is arranged in the containing space 211. One of the cover 21 and the frame 222 is provided with a plug-in part 231, and the other is provided with a slot 232, and the slot 232 is provided with a bonding part 236 to bond the plug-in part 231.

[0085] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0086] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A battery device, characterized by, The battery device comprises: a battery cell (10); a box body (20) comprising a cover body (21) and a base (22), the cover body (21) being covered on the base (22) to form a containing space (211) in which the battery cell (10) is accommodated; wherein the box body (20) further comprises a sealing structure (23), the sealing structure (23) comprising a plug-in piece (231), a plug-in groove (232) and an adhesive piece (236), one of the two surfaces of the cover body (21) and the base (22) that are matched with each other is provided with the plug-in piece (231), the other is provided with the plug-in groove (232), the plug-in piece (231) is inserted into the plug-in groove (232), and the adhesive piece (236) is filled between the plug-in piece (231) and the groove wall of the plug-in groove (232).

2. The battery device according to claim 1, characterized by The plug-in piece (231) is located in the plug-in groove (232) and divides the plug-in groove (232) into a first sub-groove (233) and a second sub-groove (234) that are in communication with each other, the first sub-groove (233) is located on the side of the plug-in piece (231) facing the containing space (211), the second sub-groove (234) is located on the side of the plug-in piece (231) facing away from the containing space (211), and the adhesive piece (236) is filled in the first sub-groove (233) and the second sub-groove (234).

3. The battery device of claim 2, wherein, The groove wall of the plug-in groove (232) comprises a bottom wall (23b) provided towards the slot opening (23a) of the plug-in groove (232), the plug-in piece (231) and the bottom wall (23b) have a communication gap (235) therebetween, and the first sub-groove (233) communicates with the second sub-groove (234) through the communication gap (235).

4. The battery device of claim 2, wherein The groove wall of the plug-in groove (232) comprises a first side wall (23c) and a second side wall (23d) located on both sides of the slot opening (23a) of the plug-in groove (232), the first side wall (23c) is closer to the containing space (211) than the second side wall (23d), the first side wall (23c) and the plug-in piece (231) form the first sub-groove (233), and the second side wall (23d) and the plug-in piece (231) form the second sub-groove (234).

5. The battery device of claim 4, wherein, The distance between the first side wall (23c) and the plug-in piece (231) is denoted as D, wherein 0.5mm≤D≤1.0mm.

6. The battery device according to any one of claims 1 to 5, wherein The sealing structure (23) further comprises an abutting piece (237), the abutting piece (237) is provided on one of the cover body (21) and the base (22) and abuts against the other, and the abutting piece (237) is located on the side of the plug-in groove (232) facing the containing space (211).

7. The battery device of claim 6, wherein The abutting piece (237) comprises a fitting surface (23e) for fitting with one of the two surfaces of the cover body (21) and the base (22) that are matched with each other.

8. The battery device according to any one of claims 1 to 5, wherein The cover (21) or the base (22) comprises a bottom (24) and a first side (25) and a second side (26) spaced apart from the bottom (24), the first side (25) is closer to the accommodation space (211) than the second side (26), and the first side (25), the second side (26) and the bottom (24) form the slot (232).

9. The battery device according to any one of claims 1 to 5, wherein The slot (232) and the plug (231) are annularly arranged along the outer periphery of the accommodation space (211).

10. The battery device according to any one of claims 1 to 5, wherein The plug (231) and the cover (21) or the base (22) are integrated.

11. The battery device according to any one of claims 1 to 5, wherein The base (22) comprises a bottom plate (221) and a frame (222), the frame (222) is arranged around the bottom plate (221), the cover (21) is arranged on the frame (222), and the cover (21), the frame (222) and the bottom plate (221) form the accommodation space (211), the plug (231) is arranged on one of the two surfaces of the cover (21) and the frame (222) matched with each other, and the slot (232) is arranged on the other of the two surfaces of the cover (21) and the frame (222) matched with each other.

12. An electrical device, characterized by The electric device comprises the battery device of any one of claims 1-11.

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