Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment. The battery device comprises a first box body, a second box body, a battery monomer and a sealing element, the first box body and the second box body are oppositely arranged, and a containing space is defined by the second box body and the first box body; the battery monomers are arranged in the accommodating space; the sealing part is located between the first box body and the second box body and surrounds the containing space, a containing groove is formed between the outer edge of the first box body and the outer edge of the second box body, and the sealing part is partially arranged in the containing groove. After the sealing piece is subjected to pressure of the first box body and the second box body, the sealing piece can bulge and generate compression deformation. The containing groove can provide space for compression deformation of the sealing piece, and therefore the compression deformation of the sealing piece is absorbed. Therefore, when the sealing element is in a compressed state, the sealing element is still positioned in the accommodating groove, so that the size of the battery device is within the specification, and the probability that the battery device interferes with an external device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device and electrical equipment. Background Art

[0002] The battery device includes a first housing, a second housing, and a battery cell. The battery cell is disposed in a receiving space formed by the second housing. A gap may be generated after the first housing and the second housing are connected. Therefore, in order to reduce the probability that the battery cell of the battery device is disturbed by external environmental factors, a seal is added between the first housing and the second housing during manufacturing.

[0003] However, during the sealing process, pressure is applied to the seal between the first box and the second box, so that the seal is compressed. After being compressed, the seal is easily bulged, thereby exceeding the outer edge of the first box and the outer edge of the second box, causing the size of the battery device to exceed the specification, thereby causing the battery device to interfere with external devices. Utility Model Content

[0004] The utility model provides a battery device and an electric device, which can solve the problem that a sealing member is easily bulged after being compressed, causing the size of the battery device to exceed the specification, thereby causing interference between the battery device and an external device.

[0005] The battery device of the embodiment of the utility model comprises a first box, a second box, a battery cell and a sealing member. The first box and the second box are arranged opposite to each other, and the second box and the first box form a containing space; the battery cell is arranged in the containing space; the sealing member is located between the first box and the second box and is arranged around the containing space, and a containing groove is provided between the outer edge of the first box and the outer edge of the second box, and the sealing member is partially arranged in the containing groove.

[0006] In the battery device of the embodiment of the utility model, the sealant bulges and generates compression deformation after being subjected to the pressure of the first box body and the second box body. The receiving groove can provide space for the compression deformation of the sealant, thereby absorbing the compression deformation of the sealant. Therefore, when the sealant is in a compressed state, the sealant will still be located in the receiving groove, which makes the size of the battery device within the specification, thereby reducing the probability of interference between the battery device and external devices.

[0007] In addition, by providing a seal between the first box body and the second box body, the battery cells can be effectively isolated from the influence of external environmental factors, such as dust, moisture, etc., thereby improving the reliability and durability of the battery device.

[0008] In certain embodiments, when the seal is in a compressed state, the orthographic projection of the seal is located within the orthographic projection of the first box, or the orthographic projection of the seal is located within the orthographic projection of the second box.

[0009] In this way, by ensuring that the seal's projection in the compressed state is within the projection of the first box or the second box, the seal can be prevented from shifting or protruding out of the accommodating groove under pressure, thereby preventing the seal from being exposed in the compressed state and further preventing the size of the battery device from exceeding the specification.

[0010] In some embodiments, the first box body includes a first main body and a first connecting portion connected to the first main body in a circumferential direction, the second box body includes a second main body and a second connecting portion connected to the second main body in a circumferential direction, the first main body and the second main body are arranged opposite to each other and enclose the accommodating space, the first connecting portion and the second connecting portion are connected, and the sealing member is located between the first connecting portion and the second connecting portion.

[0011] Thus, by arranging two connecting parts in the circumferential direction of the first box body and the second box body, the structural strength of the first box body and the second box body can be enhanced. In addition, the first connecting part and the second connecting part can provide mounting points for the sealing member, thereby facilitating the sealing of the sealing member.

[0012] In some embodiments, the receiving groove is arranged at the outer edge of the first connecting part, and the receiving groove extends along the circumference of the first connecting part; and / or the receiving groove is arranged at the outer edge of the second connecting part, and the receiving groove extends along the circumference of the second connecting part.

[0013] In this way, setting the accommodating groove on the outer edge of the first connecting part or the second connecting part can not only effectively absorb the compression deformation of the seal and reduce the probability of the seal being exposed under compression, but also facilitate observing the position of the seal after the seal is assembled, thereby reducing assembly errors and improving production efficiency.

[0014] In certain embodiments, the sealing member includes a first portion and a second portion, the first portion is closer to an outer edge of the first connecting portion than the second portion, and the first portion is entirely located in the receiving groove.

[0015] In this way, since the first part is entirely located in the accommodating groove, the compression deformation of the seal will be absorbed by the accommodating groove under the pressure generated when the first box body and the second box body are closed, which can reduce the probability of the seal exceeding the outer edges of the first box body and the second box body, thereby avoiding exposure of the seal, so that the size of the battery device is within the specification, thereby reducing the probability of interference between the battery device and external devices.

[0016] In some embodiments, the seal includes a first part and a second part, the second part is close to the accommodating space relative to the first part, the second part is in contact with both the first box body and the second box body, and the contact width between the second part and the first box body is the same as the contact width between the second part and the second box body and is greater than or equal to 8 mm.

[0017] In this way, when the contact width is greater than or equal to 8 mm, this indicates that the effective sealing width between the second part and the first box body and the second box body is large, and the seal can effectively seal the gap between the first box body and the second box body, thereby improving the sealing effect of the first box body and the second box body.

[0018] In some embodiments, the first box body is provided with a first through hole, the second box body is provided with a second through hole, the first through hole and the second through hole are arranged opposite to each other, and the battery device further includes a locking member, and the locking member is passed through the first through hole and the second through hole.

[0019] In this way, by respectively providing through holes on the first box body and the second box body and using locking members to pass through the through holes, the relative positions of the two boxes can be effectively locked, thereby enhancing the structural stability of the entire battery device.

[0020] In some embodiments, the locking member includes a bolt and a nut, the nut is inserted into the second through hole, the nut is formed with a mounting hole, and the bolt is inserted into the first through hole and inserted into the mounting hole.

[0021] In this way, the fastening method of bolts and nuts can provide sufficient pre-tightening force to ensure the safety of the first box body and the second box body under various use conditions and prevent accidental loosening. In addition, since bolts and nuts are standardized components, their cost is relatively low, which helps to reduce the overall manufacturing cost of the battery device.

[0022] In certain embodiments, the seal is provided with a third through hole, the nut includes a main body and a flange connected to the main body, the main body is passed through the second through hole, and the flange is arranged in the third through hole.

[0023] In this way, the second through hole and the third through hole can avoid the nut, thereby providing installation space for the nut. The third through hole can be used for positioning the flange, thereby facilitating the installation of the nut.

[0024] In some embodiments, the first via hole, the third via hole and the second via hole are arranged in sequence, the aperture of the third via hole is larger than the aperture of the first via hole, and the aperture of the third via hole is larger than the aperture of the second via hole.

[0025] In this way, by designing the aperture of the third via to be larger than the apertures of the first via and the second via, the problem of inconsistent manufacturing tolerances of the first via, the second via and the third via is effectively compensated for. This allows bolts, nuts or other components to pass through the third via even if there are errors during the assembly or manufacturing process, thereby reducing dimensional restrictions during the assembly process and improving the adaptability and flexibility of assembly.

[0026] The electrical equipment of the embodiment of the utility model comprises the battery device described in any one of the above embodiments.

[0027] Since the electrical equipment includes the above-mentioned battery device, the electrical equipment at least includes all the beneficial effects of the battery device, which will not be described in detail here.

[0028] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, 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 utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0030] Figure 1 It is a schematic diagram of the structure of the electrical equipment provided by some embodiments of the utility model;

[0031] Figure 2 It is a schematic diagram of the structure of a battery device provided in some embodiments of the utility model;

[0032] Figure 3 It is a schematic diagram of the structure of the battery device provided by other embodiments of the utility model;

[0033] Figure 4 yes Figure 3 A cross-sectional view of a battery device in the AA direction;

[0034] Figure 5 yes Figure 4 An enlarged view of part B of the battery device;

[0035] Figure 6 It is a structural schematic diagram of a first box provided in some embodiments of the utility model;

[0036] Figure 7 yes Figure 6 An enlarged view of part C of the first housing;

[0037] Figure 8 It is a structural schematic diagram of a second box provided in some embodiments of the utility model;

[0038] Fig. 9 yes Figure 8 An enlarged view of part D of the second box.

[0039] Description of Figure Numbers:

[0040] Electrical equipment 1000; battery device 100; controller 200; motor 300; first box body 10; second box body 20; accommodating space 101; battery cell 30; sealing member 40; outer edge 11 of the first box body; outer edge 21 of the second box body; accommodating groove 102; first body 12; first connecting portion 13; second body 22; second connecting portion 23; first part 41; second part 42; first through hole 14; second through hole 24; locking member 50; nesting 60; bolt 51; nut 52; mounting hole 520; annular groove 521; gasket 70; third through hole 43; main body 522; flange 523. DETAILED DESCRIPTION

[0041] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the description of the embodiments of the present utility model, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0044] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations 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. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] In the description of the embodiments of the present utility model, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may 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 article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] In the description of the embodiments of the present invention, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0047] In the description of the embodiments of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0048] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0049] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields. With the continuous expansion of battery application fields, its market demand is also constantly expanding.

[0050] The battery device includes a first housing, a second housing and a battery cell. The battery cell is arranged in a housing space formed by the first housing and the second housing. The first housing and the second housing are connected to form a complete housing to protect the battery cell. However, in actual use, due to the limitations of the manufacturing process and material properties, a gap may be generated after the first housing and the second housing are connected, which may cause external environmental factors to interfere with the battery cell, such as moisture, dust, etc., and affect the performance and life of the battery device.

[0051] In order to solve this problem, a seal can be added between the first box and the second box during the manufacturing process to reduce or eliminate the gap, thereby reducing the probability that the battery cell is disturbed by external environmental factors. In addition, in order to make the overall structure of the battery device compact, the seal is arranged near the outer edge of the first box or the second box. However, during the actual sealing process, pressure is applied to the seal between the first box and the second box, causing the seal to be compressed. After being compressed, the seal tends to bulge beyond the edge of the first box and the outer edge of the second box, causing the overall size of the battery device to exceed the specification, which is reflected in the increase in the length or width of the battery device. This situation not only affects the appearance of the battery device, but also may cause it to interfere with external devices during installation, causing inconvenience in use or even functional impairment.

[0052] In order to solve the problem that the size of the battery device exceeds the specification due to the seal being easily bulged after being compressed, and then the battery device interferes with the external device. The utility model embodiment provides a battery device, which is provided with a receiving groove between the outer edge of the first box body and the outer edge of the second box body, and the receiving groove is used to accommodate at least part of the seal. In this way, the seal will bulge and produce compression deformation after being subjected to the pressure of the first box body and the second box body. The receiving groove can provide space for the compression deformation of the seal, thereby absorbing the compression deformation of the seal. Therefore, when the seal is in a compressed state, the seal will still be located in the receiving groove, which makes the size of the battery device within the specification, thereby reducing the probability of interference between the battery device and the external device.

[0053] Please refer to Figure 1 , Figure 11 is a schematic diagram of the structure of the electric device 1000 provided by some embodiments of the utility model. The electric device 1000 of the utility model embodiment uses a battery or a battery cell as a power source, and the electric device 1000 can be but not limited to a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, 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 airplane toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0054] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electric device 1000 according to an implementation mode of the utility model.

[0055] The battery device 100 is disposed inside the vehicle, and the battery device 100 can be disposed at the bottom, head, or tail of the vehicle. The battery device 100 can be used to power the vehicle, for example, the battery device 100 can be used as an operating power source for the vehicle.

[0056] The vehicle may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery device 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle.

[0057] In the embodiment of the utility model, the battery device 100 can not only be used as the operating power source of the vehicle, but also can be used as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0058] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 . Figure 2 is a schematic diagram of the structure of a battery device 100 provided in some embodiments of the present utility model; Figure 3 is a schematic structural diagram of a battery device 100 provided in some other embodiments of the present utility model; Figure 4 yes Figure 3 A cross-sectional view of the battery device 100 along the AA direction; Figure 5 yes Figure 4The battery device 100 of the embodiment of the present utility model comprises a first box body 10, a second box body 20, a battery cell 30 and a sealing member 40. The first box body 10 and the second box body 20 are arranged opposite to each other, and the second box body 20 and the first box body 10 enclose a receiving space 101; the battery cell 30 is arranged in the receiving space 101; the sealing member 40 is located between the first box body 10 and the second box body 20 and is arranged around the receiving space 101, and a receiving groove 102 is provided between the outer edge 11 of the first box body 10 and the outer edge 21 of the second box body 20, and the sealing member 40 is partially arranged in the receiving groove 102.

[0059] Specifically, the battery device 100 mentioned in the embodiment of the present invention refers to a single physical module including one or more battery cells 30 to provide higher voltage and capacity. For example, the battery device 100 mentioned in the embodiment of the present invention may include a battery module or a battery pack. The battery device 100 generally includes a box for encapsulating one or more battery cells 30. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 30.

[0060] The battery cell 30 may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., and the embodiments of the present invention are not limited to this. The battery cell 30 may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present invention are not limited to this. The battery cell 30 is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present invention are not limited to this.

[0061] In the battery device 100, when there are multiple battery cells 30, the multiple battery cells 30 can be connected in series, in parallel or in mixed connection. Mixed connection means that the multiple battery cells 30 are both connected in series and in parallel. Multiple battery cells 30 can be connected in series, in parallel or in mixed connection to form a battery module, and then multiple battery modules are connected in series, in parallel or in mixed connection to form a whole and accommodated in a box. Alternatively, all battery cells 30 can be directly connected in series, in parallel or in mixed connection, and then the whole formed by all battery cells 30 is accommodated in the box.

[0062] In some embodiments, the battery device 100 may further include a busbar, through which multiple battery cells 30 may be electrically connected to each other, so as to realize series connection, parallel connection or mixed connection of multiple battery cells 30. The busbar may be a metal conductor, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0063] In some embodiments, the battery device 100 may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0064] The box is a component for accommodating the battery cell 30. The box provides a storage space 101 for the battery cell 30. The box can adopt a variety of structures. In some embodiments, the box can include a first box 10 and a second box 20. The first box 10 and the second box 20 cover each other to define a storage space 101 for accommodating the battery cell 30. The outer edge 11 of the first box 10 and the outer edge 21 of the second box 20 can be aligned to facilitate the covering of the first box 10 and the second box 20.

[0065] The first box 10 and the second box 20 can be in various shapes, such as a cuboid, a cylinder, etc. The first box 10 can be a hollow structure with one side open, and the second box 20 can also be a hollow structure with one side open, and the open side of the second box 20 covers the open side of the first box 10, so as to form a box with a storage space 101. Alternatively, the second box 20 can be a hollow structure with one side open, and the first box 10 can be a plate-shaped structure, and the first box 10 covers the open side of the second box 20, so as to form a box with a storage space 101.

[0066] The materials of the first box 10 and the second box 20 can be the same or different. For example, the material of the first box 10 can be a composite material, such as carbon fiber or unsaturated polyester glass fiber reinforced molding compound, etc. The material of the second box 20 can be metal, such as aluminum or steel, etc.

[0067] The first box body 10 and the second box body 20 can be sealed by a seal 40, or the seal 40 is used to seal the gap between the first box body 10 and the second box body 20. The seal 40 can be a sealing ring, a sealant, etc. For example, the seal 40 can be a gasket or an O-ring made of rubber, silicone or other elastic materials. The shape of the seal 40 can be adapted to the shape of the first box body 10 and the second box body 20. For example, the shape of the seal 40 can be a rectangular ring, providing a continuous seal between the first box body 10 and the second box body 20. The seal 40 can be a continuous structure or a segmented structure. For example, along the circumference of the battery device 100, the seal 40 is a continuous annular structure. For another example, along the circumference of the battery device 100, the seal 40 includes four parts connected end to end, and the four parts constitute an annular structure.

[0068] The outer edge of the seal 40 may be retracted relative to the outer edge 11 of the first case 10 and the outer edge 21 of the second case 20, or in other words, it may be recessed on one side of the outer edge 11 of the first case 10 in a direction along the outer edge 11 of the first case 10 pointing to the interior of the first case 10, or in a direction along the outer edge 21 of the second case 20 pointing to the interior of the second case 20. The outer edge of the seal 40 may also be flush with the outer edge 11 of the first case 10 and the outer edge 21 of the second case 20, which can make the overall structure of the battery device 100 more compact. The direction in which the outer edge 11 of the first case 10 points to the interior of the first case 10, or the direction in which the outer edge 21 of the second case 20 points to the interior of the second case 20 may be the length direction or the width direction of the battery device 100.

[0069] The receiving groove 102 may be a rectangular groove, a circular groove or a groove with a specific shape to accommodate seals 40 of different shapes. The depth H of the receiving groove 102 may be greater than the initial thickness D of the seal 40. The initial thickness D of the seal 40 refers to the thickness of the seal 40 before being compressed. The receiving groove 102 can provide a larger space so that the seal 40 can be deformed within the range defined by the receiving groove 102 after being compressed, rather than protruding from the outer edge 11 of the first box body 10 and the outer edge 21 of the second box body 20.

[0070] It should be noted that in Figure 5 In the figure, for ease of understanding, there is an overlapping portion between the seal 40 and the first box body 10, but this is only a diagram for ease of understanding and cannot be used as a limitation on the implementation of the utility model.

[0071] In the battery device 100 of the embodiment of the present utility model, the seal 40 swells and generates compression deformation after being subjected to the pressure of the first box body 10 and the second box body 20. The receiving groove 102 can provide space for the compression deformation of the seal 40, thereby absorbing the compression deformation of the seal 40. Therefore, when the seal 40 is in a compressed state, the seal 40 will still be located in the receiving groove 102, which makes the size of the battery device 100 within the specification, thereby reducing the probability of interference between the battery device 100 and external devices.

[0072] In addition, by providing the seal 40 between the first box body 10 and the second box body 20 , the battery cells 30 can be effectively isolated from the influence of external environmental factors, such as dust, moisture, etc., thereby improving the reliability and durability of the battery device 100 .

[0073] Please refer to Figure 5 In some embodiments, when the seal 40 is in a compressed state, the orthographic projection of the seal 40 is located within the orthographic projection of the first box 10 , or the orthographic projection of the seal 40 is located within the orthographic projection of the second box 20 .

[0074] Specifically, the orthographic projection of the seal 40 refers to the orthographic projection of the seal 40 on the surface of the first box 10 or the second box 20 that contacts the seal 40. The orthographic projection of the first box 10 refers to the orthographic projection of the first box 10 on the surface that the first box 10 contacts the seal 40. The orthographic projection of the second box 20 refers to the orthographic projection of the second box 20 on the surface that the second box 20 contacts the seal 40.

[0075] When the seal 40 is in a compressed state, one of the boundaries of the orthographic projection of the seal 40 may partially coincide with one of the boundaries of the orthographic projection of the first box body 10; the orthographic projection of the seal 40 may also be within the range limited by the orthographic projection of the first box body 10 and not coincide with any boundary of the orthographic projection of the first box body 10.

[0076] When the seal 40 is in a compressed state, one of the boundaries of the orthographic projection of the seal 40 may partially coincide with one of the boundaries of the orthographic projection of the second box body 20; the orthographic projection of the seal 40 may also be within the range limited by the orthographic projection of the second box body 20 and not coincide with any boundary of the orthographic projection of the second box body 20.

[0077] In this way, by ensuring that the orthographic projection of the seal 40 in the compressed state is located within the orthographic projection of the first box body 10 or the second box body 20, the seal 40 can be prevented from being displaced or protruding out of the receiving groove 102 under the action of pressure, thereby preventing the seal 40 from being exposed in the compressed state, and further preventing the size of the battery device 100 from exceeding the specification.

[0078] Please refer to Figure 4 and Figure 5 In some embodiments, the first box body 10 includes a first body 12 and a first connecting portion 13 connected to the first body 12 in a circumferential direction, the second box body 20 includes a second body 22 and a second connecting portion 23 connected to the second body 22 in a circumferential direction, the first body 12 and the second body 22 are arranged opposite to each other and enclose a accommodating space 101, the first connecting portion 13 and the second connecting portion 23 are connected, and the sealing member 40 is located between the first connecting portion 13 and the second connecting portion 23.

[0079] Specifically, the first body 12 can be a main contour shape component of the first box body 10. The first body 12 can be integrally formed with the first connecting portion 13. For example, the first body 12 and the first connecting portion 13 are stamped or injection molded through a piece of substrate, so that the first body 12 and the first connecting portion 13 formed in this way have a high connection strength, so that the overall structural strength of the first box body 10 is high. The first body 12 can also be separately molded from the first connecting portion 13. For example, the first body 12 and the first connecting portion 13 are manufactured from different substrates and then connected by welding or riveting. Since a separate substrate is easy to process, this method of assembling the first box body 10 by two separate substrates can reduce manufacturing costs.

[0080] The first connection part 13 and the second connection part 23 can be connected by a non-detachable method such as welding or riveting, or by a detachable method such as snap connection or bolt 51 connection. For example, the first connection part 13 and the second connection part 23 are riveted. The sealing member 40 can be arranged near the outer edge of the first connection part 13 or the second connection part 23. After the first connection part 13 and the second connection part 23 are connected, the sealing member 40 will abut against the two adjacent side surfaces of the first connection part 13 and the second connection part 23.

[0081] In some embodiments, the first connection portion 13 may be a folded edge, which, as a reinforcement structure, can withstand greater pressure and impact. In addition, the folded edge can be used as a guide and positioning structure to enable the box to be accurately aligned during assembly and reduce assembly errors. The second connection portion 23 may be a mounting seat, and the thickness of the mounting seat may be greater than the thickness of other parts of the second box 20 to increase the connection area with the folded edge, thereby improving the connection strength between the first box 10 and the second box 20.

[0082] Thus, by providing two connecting parts in the circumferential direction of the first box body 10 and the second box body 20, the structural strength of the first box body 10 and the second box body 20 can be enhanced. In addition, the first connecting part 13 and the second connecting part 23 can provide mounting points for the seal 40, thereby facilitating the sealing of the seal 40.

[0083] Please refer to Figure 5 In some embodiments, the receiving groove 102 is disposed at the outer edge of the first connecting portion 13 , and the receiving groove 102 extends along the circumference of the first connecting portion 13 .

[0084] In some embodiments, the receiving groove 102 is disposed at an outer edge of the second connecting portion 23 , and the receiving groove 102 extends along the circumference of the second connecting portion 23 .

[0085] Please refer to Figure 5In some embodiments, the receiving groove 102 is disposed on the outer edge of the first connecting portion 13 , and the receiving groove 102 is also disposed on the outer edge of the second connecting portion 23 , and the receiving groove 102 extends along the circumference of the first connecting portion 13 and the second connecting portion 23 .

[0086] For details, please refer to Figure 6 and Figure 7 . Figure 6 It is a structural schematic diagram of the first box body 10 provided in some embodiments of the utility model; Figure 7 yes Figure 6 The accommodating groove 102 may be formed by opening a groove near the outer edge of the first connecting portion 13 , and the accommodating groove 102 may include the groove and a gap between the first connecting portion 13 and the second connecting portion 23 .

[0087] Please refer to Figure 8 and Fig. 9 . Figure 8 It is a structural schematic diagram of the second box 20 provided in some embodiments of the utility model; Fig. 9 yes Figure 8 The D part of the second box body 20 is enlarged. The receiving groove 102 can also be formed by opening a groove near the outer edge of the second connecting portion 23. The receiving groove 102 may include the groove and the gap between the first connecting portion 13 and the second connecting portion 23.

[0088] The receiving groove 102 may also be formed by simultaneously opening grooves near the outer edge of the first connection portion 13 and near the outer edge of the second connection portion 23 . The receiving groove 102 may include the groove and the gap between the first connection portion 13 and the second connection portion 23 .

[0089] In this way, setting the accommodating groove 102 on the outer edge of the first connecting part 13 or the second connecting part 23 can not only effectively absorb the compression deformation of the seal 40 and reduce the probability of the seal 40 being exposed under compression, but also facilitate observing the position of the seal 40 after the seal 40 is assembled, thereby reducing assembly errors and improving production efficiency.

[0090] Please refer to Figure 5 In some embodiments, the seal 40 includes a first portion 41 and a second portion 42 , the first portion 41 is closer to the outer edge of the first connecting portion 13 relative to the second portion 42 , and the first portion 41 is entirely located in the receiving groove 102 .

[0091] Specifically, the first portion 41 and the second portion 42 may be located between the first connection portion 13 and the second connection portion 23. When the first portion 41 is in a compressed state, it may not contact at least one of the first portion 41 and the second portion 42, so that the first portion 41 has a certain compression deformation space in the receiving groove 102, and does not exceed the outer edge of the first connection portion 13 or the second connection portion 23. The second portion 42 may abut against two adjacent side surfaces of the first connection portion 13 and the second connection portion 23 to seal the gap between the first connection portion 13 and the second connection portion 23.

[0092] In this way, since the first part 41 is entirely located within the accommodating groove 102, the compression deformation of the seal 40 will be absorbed by the accommodating groove 102 under the pressure generated when the first box body 10 and the second box body 20 are closed, which can reduce the probability of the seal 40 exceeding the outer edge 21 of the first box body 10 and the second box body 20, thereby avoiding exposure of the seal 40, so that the size of the battery device 100 is within the specification, thereby reducing the probability of interference between the battery device 100 and external devices.

[0093] Please refer to Figure 5 In some embodiments, the seal 40 includes a first portion 41 and a second portion 42, the second portion 42 is closer to the accommodating space 101 relative to the first portion 41, the second portion 42 is in contact with both the first box body 10 and the second box body 20, and the contact width between the second portion 42 and the first box body 10 is the same as the contact width between the second portion 42 and the second box body 20 and is greater than or equal to 8 mm.

[0094] Specifically, the second portion 42 is a portion of the seal 40 that can provide an effective sealing width W. The contact width between the second portion 42 and the first housing 10, or the contact width between the second portion 42 and the second housing 20 is the effective sealing width W of the seal 40. The effective sealing width W can be 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, etc. The effective sealing width W can vary with the size of the seal 40, the size of the first housing 10, or the size of the second housing 20, as long as the value is greater than or equal to 8 mm. In order to have a better sealing effect, the ratio of the compressed thickness D1 of the second portion 42 to the initial thickness D2 of the second portion 42 can be 0.3 to 0.7, or the effective sealing compression amount of the seal 40 is 0.3 to 0.7. The initial thickness D2 of the second portion 42 can be equal to the initial thickness of the first portion 41, and equal to the initial thickness D of the seal 40.

[0095] In this way, when the contact width is greater than or equal to 8 mm, this indicates that the effective sealing width W between the second part 42 and the first box body 10 and the second box body 20 is larger, and the seal 40 can effectively seal the gap between the first box body 10 and the second box body 20, thereby improving the sealing effect of the first box body 10 and the second box body 20.

[0096] Please refer to Figure 5 In some embodiments, the first box body 10 is provided with a first through hole 14, and the second box body 20 is provided with a second through hole 24. The first through hole 14 and the second through hole 24 are arranged opposite to each other. The battery device 100 also includes a locking member 50, and the locking member 50 is passed through the first through hole 14 and the second through hole 24.

[0097] Specifically, the first through hole 14 may be a through hole opened on the first box body 10. The first through hole 14 may be opened on the first connecting portion 13 of the first box body 10 to facilitate the connection of the locking member 50. The first through hole 14 may be spaced apart from the receiving groove 102, and relative to the receiving groove 102, the first through hole 14 may be away from the outer edge 11 of the first box body 10. The number of the first through holes 14 may be one or more to meet different connection requirements.

[0098] The second through hole 24 may be a through hole provided on the second housing 20. The central axis of the second through hole 24 may be colinear with the central axis of the first through hole 14. The second through hole 24 may cooperate with the first through hole 14 and the locking member 50 to lock the first housing 10 and the second housing 20. The second through hole 24 may be provided on the second connecting portion 23 of the second housing 20 to facilitate the connection of the locking member 50. The second through hole 24 may be spaced apart from the receiving groove 102, and relative to the receiving groove 102, the second through hole 24 may be away from the outer edge 21 of the second housing 20. The number of the second through holes 24 may be one or more to meet different connection requirements.

[0099] The locking member 50 may be a bolt 51, a nut 52, a pin or a rivet, etc. When the material of the first housing 10 is a composite material and the material of the second housing 20 is a metal material, in order to achieve a hard connection and prevent locking failure, a nest 60 may be provided between the locking member 50 and the first housing 10. The nest 60 may also be provided with a through hole for the locking member 50 to pass through.

[0100] In this way, by respectively providing through holes on the first box body 10 and the second box body 20 and using the locking member 50 to pass through the through holes, the relative positions of the two boxes can be effectively locked, thereby enhancing the structural stability of the entire battery device 100 .

[0101] Please refer to Figure 5In some embodiments, the locking member 50 includes a bolt 51 and a nut 52 . The nut 52 is passed through the second through hole 24 . The nut 52 is formed with a mounting hole 520 . The bolt 51 is passed through the first through hole 14 and inserted into the mounting hole 520 .

[0102] Specifically, the locking member 50 can be riveted to lock the first box body 10 and the second box body 20. The nut 52 can be a rivet nut, a hexagonal nut, a flange nut, etc., and the inside of the nut 52 can be provided with an internal thread. The bolt 51 can be provided with an external thread.

[0103] In some embodiments, the nut 52 is a rivet nut. During the assembly process, the nut 52 is inserted into the second through hole 24. Then, the bolt 51 is inserted into the mounting hole 520 of the rivet nut until the external thread of the bolt 51 is fully engaged with the internal thread of the rivet nut. Then, the rivet nut is riveted using a rivet gun or other special tools. During the riveting process, the annular groove 521 of the rivet nut is squeezed and deformed to form a firm riveting point, fixing the rivet nut in the through hole of the second box body 20.

[0104] In some embodiments, in order to disperse the pressure on the bolt 51, a gasket 70 can be provided on the side of the bolt 51 facing the first box body 10. The gasket 70 can evenly distribute the pressure over a larger area, thereby reducing the probability of damage to the bolt 51 due to excessive local pressure, thereby reducing the probability of connection failure.

[0105] In this way, the fastening method of the bolt 51 and the nut 52 can provide sufficient pre-tightening force to ensure the safety of the first box body 10 and the second box body 20 under various use conditions and prevent accidental loosening. In addition, since the bolt 51 and the nut 52 are standardized components, their cost is relatively low, which helps to reduce the overall manufacturing cost of the battery device 100.

[0106] Please refer to Figure 5 In some embodiments, the seal 40 is provided with a third through hole 43 , the nut 52 includes a main body 522 and a flange 523 connected to the main body 522 , the main body 522 is passed through the second through hole 24 , and the flange 523 is arranged in the third through hole 43 .

[0107] Specifically, the third via hole 43 may be a through hole provided on the seal 40. The third via hole 43 may be aligned with both the first via hole 14 and the second via hole 24. The central axis of the third via hole 43 may be colinear with the central axis of the first via hole 14 and the second via hole 24.

[0108] The main body 522 can be interference-fitted with the second through hole 24, so that the nut 52 is not easily displaced or vibrated during the subsequent assembly process, thereby ensuring the assembly quality. The flange 523 can be connected to one end of the main body 522 close to the first box body 10, and the two opposite end surfaces of the flange 523 can respectively abut against the first box body 10 and the second box body 20.

[0109] In this way, the second through hole 24 and the third through hole 43 can avoid the nut 52, thereby providing installation space for the nut 52. The third through hole 43 can be used for positioning the flange 523, thereby facilitating the installation of the nut 52.

[0110] Please refer to Figure 5 In some embodiments, the first via hole 14 , the third via hole 43 , and the second via hole 24 are arranged in sequence, the aperture of the third via hole 43 is larger than the aperture of the first via hole 14 , and the aperture of the third via hole 43 is larger than the aperture of the second via hole 24 .

[0111] By designing the aperture of the third via 43 to be larger than the apertures of the first via 14 and the second via 24, the problem of inconsistent manufacturing tolerances among the first via 14, the second via 24 and the third via 43 is effectively compensated. This allows the bolt 51, the nut 52 or other components to pass through the third via 43 even if there are errors during the assembly or manufacturing process, thereby reducing dimensional limitations during the assembly process and improving the adaptability and flexibility of assembly.

[0112] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In a specific embodiment, the battery device 100 includes a first box body 10, a second box body 20, a battery cell 30 and a seal 40. The first box body 10 and the second box body 20 are arranged opposite to each other, and together constitute a storage space 101 for the battery cell 30. The first box body 10 includes a first body 12 and a first connecting portion 13. The second box body 20 includes a second body 22 and a second connecting portion 23. The first body 12 and the second body 22 are arranged opposite to each other, forming a storage space 101 for accommodating the battery cell 30. The first connecting portion 13 and the second connecting portion 23 are locked by bolts 51 and nuts 52.

[0113] A seal 40 is provided between the first box 10 and the second box 20. The seal 40 is used to seal the gap between the first box 10 and the second box 20 to protect the battery cells 30 from the external environment. Along the circumference of the battery device 100, the seal 40 includes four parts connected end to end, and the four parts form a ring structure.

[0114] The orthographic projection of the seal 40 in the compressed state is controlled within the orthographic projection range of the first box body 10 or the second box body 20, which helps to ensure that the seal 40 does not exceed the edges of the two boxes after compression, thereby avoiding potential dimensional over-regulation problems.

[0115] In order to adapt to the possible deformation of the seal 40 under compression, through grooves are provided in the first box 10 and the second box 20, and the receiving groove 102 is formed in accordance with the gap between the first box 10 and the second box 20. The receiving groove 102 is located between the outer edges 21 of the first box 10 and the second box 20.

[0116] Part of the sealing member 40 is disposed in the receiving groove 102. The sealing member 40 includes a first portion 41 close to the outer edge of the first connecting portion 13, and a second portion 42 close to the receiving space 101. The first portion 41 is completely located in the receiving groove 102, so that the first portion 41 can still be located in the receiving groove 102 after compression deformation, or the receiving groove 102 can absorb the compression deformation of the first portion 41, thereby preventing the first portion 41 from being exposed. The second portion 42 contacts both the first box body 10 and the second box body 20, and has the same contact width with the two boxes, so as to effectively seal the first box body 10 and the second box body 20. Among them, the effective sealing width W is 8mm.

[0117] In order to fix the first box body 10 and the second box body 20, a first through hole 14 and a second through hole 24 are respectively provided on the first connecting portion 13 and the second connecting portion 23, and a locking member 50. The locking member 50 includes a bolt 51 and a nut 52. The bolt 51 passes through the first through hole 14, and the nut 52 is passed through the second through hole 24. The nut 52 is formed with a mounting hole 520. The bolt 51 is inserted into the mounting hole 520 to complete the locking.

[0118] In order to avoid the nut 52 , the sealing member 40 is further provided with a third through hole 43 . The main body 522 of the nut 52 is partially penetrated through the second through hole 24 , while the flange 523 is partially disposed in the third through hole 43 .

[0119] The first through hole 14, the third through hole 43 and the second through hole 24 are arranged in sequence. The aperture of the third through hole 43 is designed to be the largest to ensure that the bolt 51 and the nut 52 can pass smoothly even if there is a certain error during the assembly process.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above 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 utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model 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 device, characterized in that: The battery device comprises: The first box; A second box, wherein the first box and the second box are arranged opposite to each other, and the second box and the first box enclose a containing space; A battery cell, wherein the battery cell is arranged in the accommodating space; A sealing member is located between the first box body and the second box body and is arranged around the accommodating space. A receiving groove is provided between the outer edge of the first box body and the outer edge of the second box body, and the sealing member is partially arranged in the receiving groove.

2. The battery device according to claim 1, characterized in that: When the seal is in a compressed state, the orthographic projection of the seal is located within the orthographic projection of the first box, or the orthographic projection of the seal is located within the orthographic projection of the second box.

3. The battery device according to claim 1, characterized in that: The first box body includes a first main body and a first connecting portion connected to the first main body in a circumferential direction, the second box body includes a second main body and a second connecting portion connected to the second main body in a circumferential direction, the first main body and the second main body are arranged opposite to each other and enclose the accommodating space, the first connecting portion and the second connecting portion are connected, and the sealing member is located between the first connecting portion and the second connecting portion.

4. The battery device according to claim 3, characterized in that: The receiving groove is arranged at the outer edge of the first connecting part, and the receiving groove extends along the circumference of the first connecting part; and / or the receiving groove is arranged at the outer edge of the second connecting part, and the receiving groove extends along the circumference of the second connecting part.

5. The battery device according to claim 4, characterized in that: The sealing member includes a first portion and a second portion, wherein the first portion is closer to an outer edge of the first connecting portion relative to the second portion, and the first portion is entirely located in the accommodating groove.

6. The battery device according to claim 1, characterized in that: The seal includes a first part and a second part, the second part is close to the accommodating space relative to the first part, the second part is in contact with both the first box body and the second box body, and the contact width between the second part and the first box body is the same as the contact width between the second part and the second box body and is greater than or equal to 8 mm.

7. The battery device according to claim 1, characterized in that: The first box body is provided with a first through hole, the second box body is provided with a second through hole, the first through hole and the second through hole are arranged opposite to each other, and the battery device further includes a locking member, and the locking member is passed through the first through hole and the second through hole.

8. The battery device according to claim 7, characterized in that: The locking member includes a bolt and a nut. The nut is inserted into the second through hole. The nut is formed with a mounting hole. The bolt is inserted into the first through hole and inserted into the mounting hole.

9. The battery device according to claim 8, characterized in that: The sealing member is provided with a third through hole, the nut comprises a main body and a flange connected to the main body, the main body is passed through the second through hole, and the flange is arranged in the third through hole.

10. The battery device according to claim 9, characterized in that: The first via hole, the third via hole and the second via hole are arranged in sequence, the aperture of the third via hole is larger than the aperture of the first via hole, and the aperture of the third via hole is larger than the aperture of the second via hole.

11. An electrical device, characterized in that: The electrical equipment comprises the battery device according to any one of claims 1-10.

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