Battery device and electric device

Abstract

The utility model relates to the field of batteries, in particular to a battery device and an electric device. The battery device comprises a box body with a containing space and a battery monomer assembly, the battery monomer assembly is located in the containing space, and the battery monomer assembly comprises at least two battery monomers arranged in the first direction; the confluence assembly is arranged on the side, provided with the connecting terminal, of the battery monomer assembly in the second direction, the confluence assembly comprises an electric connecting piece, the electric connecting piece is used for electrically connecting at least two battery monomers, and the second direction is perpendicular to the first direction; the first elastic piece is arranged on one side, far away from the battery monomer assembly, of the confluence assembly along a second direction; the cover body is arranged on one side, far away from the confluence assembly, of the first elastic piece along the second direction, and the cover body crimps the electric connecting piece on the connecting terminal of the corresponding battery monomer through the first elastic piece. According to the scheme, the welding of each electric connecting sheet and the connecting terminal of the battery monomer is avoided, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of batteries, specifically to a battery device and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] The assembly process of battery devices requires multiple welding steps, which affects the assembly efficiency of the battery devices. Utility Model Content

[0004] In view of the above problems, the present invention provides a battery device and an electrical device that can alleviate the problem of low assembly efficiency of the battery device.

[0005] In a first aspect, this utility model provides a battery device, comprising:

[0006] The box has a receiving space;

[0007] A battery cell assembly located within the receiving space, the battery cell assembly comprising at least two battery cells arranged along a first direction;

[0008] A busbar assembly, along a second direction, is disposed on the side of the battery cell assembly having connection terminals. The busbar assembly includes an electrical connection piece for electrically connecting at least two battery cells. The second direction is perpendicular to the first direction.

[0009] A first elastic element, along the second direction, is disposed on the side of the busbar assembly away from the battery cell assembly;

[0010] The cover, along the second direction, is disposed on the side of the first elastic member away from the busbar assembly. The cover presses the electrical connecting piece onto the connection terminal of the corresponding battery cell through the first elastic member, so as to realize the electrical connection between the electrical connecting piece and at least two battery cells.

[0011] In this embodiment of the technical solution, a first elastic element and a cover plate are provided on the busbar assembly. The cover plate, through the first elastic element, presses multiple electrical connecting pieces in the busbar assembly onto the connection terminals of the individual battery cells to achieve electrical connection between the battery cells. The first elastic element is elastic and can apply an elastic force to the electrical connecting pieces in the direction of the connection terminals of the battery cells, so that the electrical connecting pieces and the connection terminals of the battery cells remain electrically connected. This technical solution eliminates the need to weld each electrical connecting piece to the connection terminals of the individual battery cells, improving assembly efficiency. In addition, this invention does not require modification to the structure of the electrical connecting pieces, resulting in low cost. Furthermore, the first elastic element can also absorb assembly tolerances, improving assembly efficiency and ease of assembly.

[0012] In some embodiments of this utility model, the battery device further includes an isolator, which is located between the battery cell assembly and the busbar assembly along the second direction, and is fixedly connected to the housing;

[0013] The isolation component is provided with multiple limiting structures, and each electrical connection piece is disposed in one of the limiting structures. The limiting structure is provided with a through hole at the position opposite to the connection terminal of the battery cell, and the connection terminal passes through the through hole and connects to the electrical connection piece.

[0014] In the technical solution of this utility model embodiment, the isolator is fixed to the housing, thereby constraining the movement of the isolator. The electrical connection piece is disposed in the limiting structure of the isolator. The limiting structure restricts the movement of the electrical connection piece in the direction perpendicular to the second direction. Therefore, the movement of the electrical connection piece in the direction perpendicular to the second direction is restricted, reducing the phenomenon of relative movement between the electrical connection piece and the connecting terminal in the direction perpendicular to the second direction, and improving the reliability of the electrical connection between the electrical connection piece and the connecting terminal.

[0015] In some embodiments of this utility model, the cover is fixedly connected to the isolator to clamp the manifold assembly and the first elastic member located between the isolator and the cover.

[0016] In the technical solution of this utility model embodiment, after the cover plate is closed on the first elastic member, the cover plate can be pressed against the separator plate by fasteners, thereby compressing the first elastic member and clamping the first elastic member and multiple electrical connecting pieces between the separator plate and the cover plate. Because the first elastic member is compressed, it abuts against the multiple electrical connecting pieces, pressing them towards the connection terminals of the battery cells, improving the reliability of the electrical connection between the electrical connecting pieces and the connection terminals of the battery cells. By adjusting the clamping force of the fasteners on the cover plate, the pressure of the cover plate on the first elastic member and the multiple electrical connecting pieces can be adjusted.

[0017] In some embodiments of this utility model, the edge of the cover and / or the middle part of the cover are fixedly connected to the isolation member by fasteners.

[0018] In the technical solution of this utility model embodiment, the edge of the cover and / or the middle part of the cover are fixedly connected to the isolation member by fasteners, which can improve the reliability of the connection between the cover and the isolation member, and make the cover maintain pressure on the first elastic member and multiple electrical connecting pieces, thereby improving the reliability of the electrical connection between the multiple electrical connecting pieces and the connecting terminals.

[0019] In some embodiments of this utility model, the isolation member is snapped into the housing.

[0020] In the technical solution of this utility model embodiment, the snap-fit ​​method can quickly and securely connect the isolation component to the housing, further improving assembly efficiency. At the same time, the snap-fit ​​method also facilitates disassembly and maintenance.

[0021] In some embodiments of this utility model, the box body includes a bottom wall and side walls fixedly connected to the bottom wall. The side walls include two first side walls and two second side walls arranged opposite to each other. The two first side walls and the two second side walls are connected to form a rectangular frame.

[0022] The isolation component is provided with a first snap-fit ​​structure, and the first sidewall and / or the second sidewall is provided with a second snap-fit ​​structure, wherein the first snap-fit ​​structure snaps into the second snap-fit ​​structure.

[0023] In the technical solution of this utility model embodiment, by providing a first snap-fit ​​structure and a second snap-fit ​​structure on the isolation plate and the side wall of the box respectively, the isolation plate and the box can be assembled conveniently and quickly. The position of the second snap-fit ​​structure on the box is flexible and can be provided on the first side wall and / or the second side wall. When the second snap-fit ​​structure is provided on both the first and second side walls, the reliability of the connection between the isolation plate and the box can be improved.

[0024] In some embodiments of this utility model, the first snap-fit ​​structure is a protrusion, and the second snap-fit ​​structure is a groove.

[0025] In the technical solution of this utility model embodiment, protrusions are provided on the isolation plate and grooves are provided on the box body. The box body has a certain height, which facilitates the processing of the grooves. Protrusions are provided on the outer periphery of the isolation plate, which can make the part of the isolation plate other than the protrusions thinner, saving space and increasing energy density.

[0026] In the technical solution of this utility model embodiment

[0027] In some embodiments of this utility model, the protrusion includes a guide portion and an abutment portion. Along the second direction, the guide portion is located on the side of the abutment portion facing the bottom wall; the guide portion is used to guide the abutment portion into the second snap-fit ​​structure.

[0028] In the technical solution of this utility model embodiment, by providing a guide portion, the abutment portion can be more easily engaged into the second engaging structure.

[0029] In some embodiments of the present invention, the battery device further includes a second elastic member. Along a second direction, the second elastic member is disposed on the side of the battery cell assembly away from the busbar assembly. The second elastic member is used to cause the battery cell to abut against the electrical connection piece in the busbar assembly.

[0030] In the technical solution of this utility model embodiment, when assembling the battery device, the second elastic member is placed inside the housing, then the second elastic member is placed inside the housing, and then the battery cell assembly is placed inside. At this time, the battery cell assembly presses on the second elastic member, and the second elastic member applies a force to the battery cell in the direction of the electrical connector, pushing the battery cell towards the electrical connector along the second direction, further improving the reliability of the electrical connection between the battery cell's connection terminal and the electrical connector. In addition, the second elastic member also supports the bottom of the battery cell, mitigating the impact of the housing bottom on the battery cell. When the battery device is subjected to vibration in the second direction, the battery cell will move in the second direction. Since in this embodiment, the battery cell has a first elastic member on one side along the second direction and a second elastic member on the other side along the second direction, the battery cell and the electrical connector are elastically pressed between the first and second elastic members, improving the reliability of the connection between the battery cell and the electrical connector. In addition, the second elastic member can also absorb assembly tolerances, improving assembly efficiency and ease of assembly.

[0031] In some embodiments of this utility model, the first sidewall extends along the first direction, and a dividing member is provided between two opposing first sidewalls. The dividing member is used to divide the accommodating space into a plurality of subspaces arranged along the first direction, and the battery cell is inserted into each subspace.

[0032] In the technical solution of this utility model embodiment, the battery cell adopts an insert-type design, which facilitates the assembly of the battery cell and the casing and improves assembly efficiency. The two ends of the battery cell are clamped by a first elastic member, a second elastic member, and a cover plate, improving the stability of the battery cell within the casing.

[0033] In some embodiments of this utility model, the dividing member includes two dividing strips, each of the dividing strips extending along the second direction, and the two dividing strips are correspondingly installed on the two first sidewalls;

[0034] Along a third direction, a gap is formed between the two dividing strips, and the third direction is perpendicular to both the first direction and the second direction.

[0035] In the technical solution of this utility model embodiment, since the dividing strip has a thickness (the thickness of the dividing strip is the dimension along the first direction Y), the gap between the two dividing strips is a space for the expansion of the battery cell, which facilitates the expansion of the battery cell.

[0036] Secondly, this utility model provides an electrical device, including the battery device as described above, which is used to provide electrical energy.

[0037] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0038] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0039] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of the present invention;

[0040] Figure 2 This is an exploded view of the battery device according to some embodiments of the present invention;

[0041] Figure 3 This is a schematic diagram showing the assembly relationship between the isolation plate and the busbar assembly in some embodiments of this utility model;

[0042] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0043] Figure 5 This is a schematic diagram showing the assembly relationship between the battery cell, the separator, and the electrical connection piece in some embodiments of this utility model;

[0044] Figure 6 This is a schematic diagram showing the assembly relationship between the isolation plate and the cover in some embodiments of this utility model;

[0045] Figure 7 This is a schematic diagram of the battery device according to some embodiments of the present invention after removing the cover and the first elastic member;

[0046] Figure 8 for Figure 7 Enlarged view of point B in the image;

[0047] Figure 9 This is a schematic diagram of the first snap-fit ​​structure on the isolation plate in some embodiments of the present utility model;

[0048] Figure 10 This is a schematic diagram of the structure of the box body according to some embodiments of the present utility model.

[0049] The reference numerals in the detailed embodiments are as follows:

[0050] 1000 vehicles;

[0051] Battery 100, controller 200, motor 300;

[0052] Box body 10, first side wall 11, second side wall 12, second snap-fit ​​structure 13, dividing strip 14;

[0053] Battery cell assembly 20, battery cell 21, connection terminal 211;

[0054] Busbar assembly 30, electrical connector 31;

[0055] First elastic element 40;

[0056] Cover 50;

[0057] 60 isolating element, 61 is through hole, 62 is first snap-fit ​​structure, 621 is guide part, 622 is abutting part, and 63 is limiting structure;

[0058] Second elastic element 70;

[0059] Fastener 80;

[0060] First direction X, second direction Z, third direction Y. Detailed Implementation

[0061] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the invention, are intended to cover non-exclusive inclusion.

[0063] In the description of the embodiments of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.

[0064] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0065] In the description of this utility model embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0066] In the description of the embodiments of this utility model, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0067] In the description of the embodiments of this utility model, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0068] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0069] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0070] The inventors have noted that the current assembly method for battery modules involves: first arranging battery cells 21, then welding end plates and side plates to the outer periphery of the battery cells 21, and finally welding the sampling component onto the battery cells 21. The sampling component includes a busbar assembly 30, a temperature sampling element, etc., wherein the busbar assembly 30 includes multiple electrical connection pieces 31. Each electrical connection piece 31 is welded to two battery cells 21 to electrically connect the two battery cells 21. The molding of this single module requires multiple welding processes, including welding the end plates and side plates, and welding the electrical connection pieces 31, resulting in a complex assembly process and low assembly efficiency.

[0071] To address the problem, the applicant discovered that multiple electrical connectors 31 can be pressed onto the connection terminals 211 of the battery cell 21 using a crimping method. By using an elastic element to maintain contact between the connection terminals 211 and the electrical connectors 31, a reliable electrical connection between the battery cells 21 can be achieved, eliminating the need for welding between the multiple electrical connectors 31 and the battery connection terminals 211, saving steps and improving assembly efficiency.

[0072] The battery cell 21 disclosed in this embodiment of the present invention can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be composed of the battery cell 21 disclosed in this invention, batteries, etc. This helps to alleviate and automatically regulate the deterioration of cell expansion force, replenish electrolyte consumption, and improve the stability of battery performance and battery life.

[0073] This utility model provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0074] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of the present invention.

[0075] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of the present invention. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery 100 is installed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0076] In some embodiments of this utility model, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0077] Figure 2 This is an exploded view of the battery device according to some embodiments of the present invention; please refer to [link / reference]. Figure 2 This utility model provides a battery device in some embodiments, comprising: a housing 10 having a receiving space; a battery cell assembly 20 located within the receiving space, the battery cell assembly 20 including at least two battery cells 21 arranged along a first direction X; and a busbar assembly 30 arranged along a second direction Z on the side of the battery cell assembly 20 having a connection terminal 211. Figures 4-7 As shown, the busbar assembly 30 includes an electrical connector 31 for electrically connecting at least two battery cells 21, with the second direction Z perpendicular to the first direction X; a first elastic member 40 along the second direction Z, disposed on the side of the busbar assembly 30 away from the battery cell assembly 20; and a cover 50 along the second direction Z, disposed on the side of the first elastic member 40 away from the busbar assembly 30. The cover 50 presses the electrical connector 31 onto the connection terminal 211 of the corresponding battery cell 21 through the first elastic member 40, thereby realizing the electrical connection between the electrical connector 31 and at least two battery cells 21.

[0078] In some embodiments, the housing 10 is used to house the battery cell 21. The housing 10 can be a hollow structure with one end open, and its shape can be cylindrical or cubic. In some embodiments of this invention, such as... Figure 2 As shown, the box 10 is rectangular in shape.

[0079] In some embodiments, the battery cell assembly 20 is typically formed by arranging multiple battery cells 21; as an example, the battery cell assembly 20 can be a battery module, which is formed by arranging multiple battery cells 21 and fixing them together to form an independent module.

[0080] In some embodiments of this utility model, each battery cell 21 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 21 can be cylindrical, flat, cuboid, or other shapes.

[0081] As an example, the battery cell 21 can be a cylindrical battery cell 21, a square battery cell 21, a pouch battery cell 21, a blade-shaped battery cell 21, a multi-prism battery such as a hexagonal battery, or a battery of other shapes, etc., and there are no particular limitations in this utility model.

[0082] In some embodiments of this invention, the connection terminal 211 of the battery cell 21 can be the terminal post of the battery cell 21. In some embodiments of this invention, each electrical connection piece 31 connects to the connection terminals 211 of two adjacent battery cells 21. In some embodiments of this invention, each electrical connection piece 31 can also connect to the connection terminals 211 of three adjacent battery cells 21.

[0083] In some embodiments of this invention, the busbar assembly 30 is used to realize the electrical connection of multiple battery cells 21.

[0084] In some embodiments of this invention, the multiple electrical connectors 31 in the combiner assembly 30 can be made of copper or aluminum. The multiple electrical connectors 31 can connect multiple battery cells 21 in series or in parallel; this invention does not impose any limitations on this.

[0085] In some embodiments, the first elastic element 40 can be compressed to apply an elastic force to the electrical connector 31, thereby maintaining an electrical connection between the electrical connector 31 and the connection terminal 211 of the battery cell 21.

[0086] In some embodiments, the first elastic element 40 may be made of silicone, foam, or polyurethane.

[0087] In some embodiments, the cover 50 may be a plate-like structure, and the cover 50 is disposed on the side of the housing 10 that has an opening; the cover plate is used to press the electrical connection piece 31 toward the connection terminal 211 of the battery cell 21.

[0088] In some embodiments of this invention, the battery device can be a battery module, which includes one or more battery cell assemblies 20. In some embodiments of this invention, the battery device can also be a battery pack, which includes one or more battery modules. In some embodiments of this invention, the battery pack includes one or more battery cell assemblies 20. The battery device can be configured according to the appropriate scenario.

[0089] In some embodiments of this utility model, the battery device is assembled as follows: battery cell 21 is assembled and placed inside housing 10, busbar assembly 30 is placed on battery cell assembly 20, then a first elastic member 40 is placed on battery cell assembly 20, and then a cover plate is pressed onto the first elastic member 40. The cover plate compresses the first elastic member 40, and the first elastic member 40 presses onto multiple electrical connecting pieces 31, thereby pressing the multiple electrical connecting pieces 31 onto the connecting terminals 211 of battery cell 21.

[0090] In the technical solution of this utility model embodiment, a first elastic member 40 and a cover plate are provided on the busbar assembly 30. The cover plate, through the first elastic member 40, presses multiple electrical connecting pieces 31 in the busbar assembly 30 onto the connection terminals 211 of the battery cells 21 to achieve electrical connection between the battery cells 21. The first elastic member 40 is elastic and can apply an elastic force to the electrical connecting pieces 31 in the direction of the connection terminals 211 of the battery cells, so that the electrical connecting pieces 31 and the connection terminals 211 of the battery cells 21 are electrically connected. The technical solution of this utility model eliminates the need to weld each electrical connecting piece 31 to the connection terminals 211 of the battery cells 21 separately, improving assembly efficiency. In addition, this utility model does not require modification of the structure of the electrical connecting pieces 31, resulting in low cost. Furthermore, the first elastic member 40 can also absorb assembly tolerances, improving assembly efficiency and ease of assembly.

[0091] Figure 3 This is a schematic diagram showing the assembly relationship between the isolation plate and the busbar assembly 30 in some embodiments of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a schematic diagram showing the assembly relationship between the battery cell 21, the separator, and the electrical connection piece 31 in some embodiments of this utility model.

[0092] Please see Figure 3 , Figure 4 and Figure 5In some embodiments of this utility model, the battery device further includes an isolation member 60. Along the second direction Z, the isolation member 60 is located between the battery cell assembly 20 and the busbar assembly 30, and the isolation member 60 is fixedly connected to the housing 10. The isolation member 60 is provided with a plurality of limiting structures 63, and each electrical connecting piece 31 is disposed in a limiting structure 63. The limiting structure 63 is provided with a through hole 61 at the position opposite to the connecting terminal 211 of the battery cell 21, and the connecting terminal 211 passes through the through hole 61 to connect with the electrical connecting piece 31.

[0093] In some embodiments of this invention, the separator 60 is a device capable of isolating multiple electrical connection pieces 31 and battery cells 21. The separator 60 can be made of an insulating material, such as insulating plastic.

[0094] In some embodiments of this utility model, the isolation member 60 serves to support multiple electrical connecting pieces 31, and the multiple electrical connecting pieces 31 can be placed on the isolation member 60 to realize the integrated feeding of multiple electrical connecting pieces 31.

[0095] In some embodiments of this utility model, the isolation member 60 is fixedly connected to the housing 10, so that the isolation member 60 will not move after being assembled with the housing 10.

[0096] The limiting structure 63 is used to restrict the movement of the electrical connector 31 in the direction perpendicular to the second direction Z. The limiting structure 63 on the isolator 60 can be a limiting groove for accommodating the electrical connector 31, constraining the movement of the electrical connector 31, and preventing the electrical connector 31 from falling off the isolator. The limiting structure 63 can provide initial constraint on the electrical connector 31, but it will not fix the electrical connector 31 in place. For example, the limiting groove can be a structure adapted to the shape of the electrical connector 31, with the outer contour of the limiting groove slightly larger than the outer contour of the electrical connector 31. In other words, the size of the limiting groove is larger than the size of the electrical connector 31.

[0097] In some embodiments of this invention, the battery cell 21 can move relative to the separator 60, specifically, the battery cell 21 can move upward or downward relative to the separator 60 along the second direction Z. When the battery cell 21 moves relative to the separator 60 as a whole, the connecting terminal 211 of the battery cell 21 moves within the through hole 61 of the separator 60, for example, moving upward or downward along the second direction Z within the through hole 61. In some embodiments of this invention, the size of the through hole 61 can be larger than the size of the connecting terminal 211, and there is a gap between the outer periphery of the connecting terminal 211 of the battery cell 21 and the inner wall of the through hole 61, so that the connecting terminal 211 can move within the through hole 61. The movement of the battery cell 21 relative to the separator 60 enables the connecting terminal 211 to maintain an electrical connection with the electrical connecting piece.

[0098] In the technical solution of this utility model embodiment, the isolator 60 is fixed to the housing 10, thereby constraining the movement of the isolator 60. The electrical connection piece 31 is disposed in the limiting structure 63 of the isolator 60. The limiting structure 63 restricts the movement of the electrical connection piece 31 in the direction perpendicular to the second direction Z. Therefore, the movement of the electrical connection piece 31 in the direction perpendicular to the second direction Z is restricted, reducing the phenomenon of relative movement between the electrical connection piece 31 and the connecting terminal 211 in the direction perpendicular to the second direction Z, and improving the reliability of the electrical connection between the electrical connection piece 31 and the connecting terminal 211.

[0099] Figure 6 This is a schematic diagram showing the assembly relationship between the isolation plate and the cover 50 in some embodiments of this utility model; see also Figure 6 In some embodiments of this utility model, the cover 50 is fixedly connected to the isolation member 60 to clamp the confluence assembly 30 and the first elastic member 40 located between the isolation member 60 and the cover 50.

[0100] The fixed connection between the cover 50 and the partition plate can be a detachable fixed connection, such as by fastener 80, which can be a rivet or a bolt; the fixed connection between the cover 50 and the partition plate can also be a non-detachable fixed connection, such as by bonding or welding.

[0101] In the technical solution of this utility model embodiment, after the cover plate is closed on the first elastic member 40, the cover plate can be pressed against the separator plate by the fastener 80, thereby compressing the first elastic member 40 and clamping the first elastic member 40 and the plurality of electrical connecting pieces 31 between the separator plate and the cover plate. As the first elastic member 40 is compressed, the first elastic member 40 abuts against the plurality of electrical connecting pieces 31, pressing the plurality of electrical connecting pieces 31 toward the connection terminal 211 of the battery cell 21, thereby improving the reliability of the electrical connection between the electrical connecting pieces 31 and the connection terminal 211 of the battery cell 21.

[0102] Refer again Figure 6 In some embodiments of this utility model, the edge of the cover 50 and / or the middle part of the cover 50 are fixedly connected to the separator 60 by fasteners 80.

[0103] In some embodiments of this utility model, a fastener 80 is provided in the middle of the cover plate, and the middle of the cover plate is connected to the middle of the partition plate. Multiple fasteners 80 can be provided in the middle of the cover plate; for example, there may be two fasteners 80 in the middle of the cover plate.

[0104] In some embodiments of this utility model, the edge of the cover plate is provided with fasteners 80, and the edge of the cover plate is connected to the edge of the partition plate. Multiple fasteners 80 can be provided on the edge of the cover plate, for example, at least one fastener 80 is provided at each of the four corners of the edge of the cover plate.

[0105] In some embodiments of this utility model, fasteners 80 are provided in the middle and at the edges of the cover plate, and the middle and edges of the cover plate are connected to the isolation plate, thereby improving the reliability of the connection between the cover plate and the isolation plate.

[0106] In the technical solution of this utility model embodiment, the edge and / or the middle part of the cover 50 are fixedly connected to the spacer 60 by fasteners 80, which can improve the reliability of the connection between the cover and the spacer 60, and make the cover maintain pressure on the first elastic member 40 and the plurality of electrical connecting pieces 31, thereby improving the reliability of the electrical connection between the plurality of electrical connecting pieces 31 and the connecting terminal 211. By adjusting the clamping force of the fasteners 80 on the cover, the pressure of the cover on the first elastic member 40 and the plurality of electrical connecting pieces 31 can be adjusted.

[0107] Figure 7 This is a schematic diagram of the battery device according to some embodiments of the present invention after removing the cover 50 and the first elastic member 40; Figure 8 for Figure 7 Enlarged view of point B in the image; see also Figure 2 and Figure 8 In some embodiments of this utility model, the isolation member 60 is snapped into the housing 10.

[0108] In the technical solution of this utility model embodiment, the snap-fit ​​method can quickly and securely connect the isolation component 60 to the housing 10, further improving assembly efficiency. At the same time, the snap-fit ​​method also facilitates disassembly and maintenance.

[0109] In some embodiments of this utility model, see Figure 7 and Figure 8 The housing 10 includes a bottom wall and side walls fixedly connected to the bottom wall. The side walls include two first side walls 11 and two second side walls 12 arranged opposite to each other. The two first side walls 11 and the two second side walls 12 are connected to form a rectangular frame. The isolation member 60 is provided with a first snap-fit ​​structure 62, and the first side wall 11 and / or the second side wall 12 are provided with a second snap-fit ​​structure 13. The first snap-fit ​​structure 62 and the second snap-fit ​​structure 13 snap-fit ​​together.

[0110] In the technical solution of this utility model embodiment, by providing a first snap-fit ​​structure 62 and a second snap-fit ​​structure 13 on the side wall of the isolation plate and the housing 10 respectively, the isolation plate and the housing 10 can be assembled conveniently and quickly. The position of the second snap-fit ​​structure 13 on the housing 10 is flexible and can be provided on the first side wall 11 and / or the second side wall 12. When the second snap-fit ​​structure 13 is provided on both the first side wall 11 and the second side wall 12, the reliability of the connection between the isolation plate and the housing 10 can be improved.

[0111] In some embodiments of this utility model, the first snap-fit ​​structure 62 is a protrusion, and the second snap-fit ​​structure 13 is a groove.

[0112] In the technical solution of this utility model embodiment, protrusions are provided on the isolation plate and grooves are provided on the box 10. The box 10 has a certain height, which facilitates the processing of the grooves. Protrusions are provided on the outer periphery of the isolation plate, which can make the part of the isolation plate other than the protrusions thinner, save space, and increase energy density.

[0113] In other embodiments of this utility model, the first snap-fit ​​structure 62 is a groove, and the second snap-fit ​​structure 13 is a protrusion.

[0114] Figure 9 This is a schematic diagram of the first snap-fit ​​structure 62 on the isolation plate according to some embodiments of the present invention. See also... Figure 9 In some embodiments of this utility model, the protrusion includes a guide portion 621 and an abutment portion 622. Along the second direction Z, the guide portion 621 is located on the side of the abutment portion 622 facing the bottom wall; the guide portion 621 is used to guide the abutment portion 622 into the second snap-fit ​​structure 13.

[0115] The guide unit 621 can be as follows Figure 9 The guide ramp shown in the diagram has a generally trapezoidal outer contour.

[0116] After the abutting part 622 is engaged in the second engaging structure 13, the inner wall of the second engaging structure 13 restricts the abutting part 622 from disengaging from the second engaging structure 13.

[0117] In the technical solution of this utility model embodiment, by providing a guide portion, the abutment portion 622 can be easily inserted into the second snap-fit ​​structure 13.

[0118] In some embodiments of the present invention, the battery device further includes a second elastic member 70 along the second direction Z. The second elastic member 70 is disposed on the side of the battery cell assembly 20 away from the busbar assembly 30. The second elastic member 70 is used to cause the battery cell 21 to abut against the electrical connection piece 31 in the busbar assembly 30.

[0119] The second elastic element 70 can be made of silicone, foam, or polyurethane. The second elastic element 70 can be made of the same material as the first elastic element 40, or it can be made of a different material. When the first elastic element 40 and the second elastic element 70 are the same, the number of parts can be reduced, facilitating assembly.

[0120] In the technical solution of this utility model embodiment, when assembling the battery device, the second elastic member 70 is placed inside the housing 10, and then the battery cell assembly 20 is placed inside. At this time, the battery cell assembly 20 presses on the second elastic member 70, and the second elastic member 70 applies a force to the battery cell 21 in the direction of the electrical connecting piece 31, pushing the battery cell 21 towards the electrical connecting piece 31 along the second direction Z, further improving the reliability of the electrical connection between the connection terminal 211 of the battery cell 21 and the electrical connecting piece 31. In addition, the second elastic member 70 also supports the bottom of the battery cell 21, mitigating the impact of the bottom of the housing 10 on the battery cell 21. When the battery device is subjected to vibration in the second direction Z, the battery cell 21 will move in the second direction Z. In this embodiment, a first elastic member 40 is provided on one side of the battery cell 21 along the second direction Z, and a second elastic member 70 is provided on the other side of the battery cell 21 along the second direction Z. The battery cell 21 and the electrical connecting piece 31 are elastically pressed between the first elastic member 40 and the second elastic member 70, which improves the reliability of the connection between the battery cell 21 and the electrical connecting piece 31. In addition, the second elastic member 70 can also absorb assembly tolerances, improving assembly efficiency and ease of assembly.

[0121] Figure 10 This is a schematic diagram of the structure of the housing 10 according to some embodiments of the present invention. See also Figure 10 In some embodiments of this utility model, the first sidewall 11 extends along the first direction X, and a dividing member is provided between two opposing first sidewalls 11. The dividing member is used to divide the accommodating space into a plurality of subspaces arranged along the first direction X, and a battery cell 21 is inserted into each subspace.

[0122] Each subspace can accommodate one or more battery cells 21, and this utility model does not impose any restrictions on this.

[0123] In the technical solution of this utility model embodiment, the battery cell 21 adopts an insert-type design, which facilitates the assembly of the battery cell 21 with the housing 10 and improves assembly efficiency. The two ends of the battery cell 21 are clamped by the first elastic member 40, the second elastic member 70, and the cover plate, which improves the stability of the battery cell 21 within the housing 10.

[0124] In some embodiments of this utility model, the housing 10 can be integrally molded, thereby eliminating the need for welding end plates and side plates and further improving assembly efficiency. The housing 10 can be integrally molded using injection molding.

[0125] In some embodiments of this utility model, the dividing member includes two dividing strips 14, each dividing strip 14 extending along the second direction Z, and the two dividing strips 14 are correspondingly installed on two first sidewalls 11; along the third direction Y, a gap is formed between the two dividing strips 14, and the third direction Y is perpendicular to both the first direction X and the second direction Z.

[0126] The dividing strip 14 can guide the insertion of the battery cell 21, and the battery can be inserted into the housing 10 along the extension direction of the dividing strip 14.

[0127] In the technical solution of this utility model embodiment, since the dividing strip 14 has a thickness (the thickness of the dividing strip 14 is the dimension along the first direction X), the two dividing strips 14 form a space between them to allow for the expansion of the battery cell 21, which facilitates the expansion of the battery cell 21.

[0128] In the technical solution of this utility model embodiment, the dividing strips 14 form a gap, so that two adjacent subspaces are connected.

[0129] In other embodiments of this utility model, the dividing element can be a partition plate, which isolates two adjacent subspaces so that the two adjacent subspaces are not connected.

[0130] Secondly, this utility model provides an electrical device, including the battery device as described above, which is used to provide electrical energy.

[0131] In some embodiments of this utility model, a battery device is provided, including a housing 10 having a receiving space; a battery cell assembly 20 located within the receiving space, the battery cell assembly 20 including at least two battery cells 21 arranged along a first direction X; a busbar assembly 30 along a second direction Z, the busbar assembly 30 being disposed on the side of the battery cell assembly 20 having a connection terminal 211, the busbar assembly 30 including an electrical connecting piece 31 for electrically connecting at least two battery cells 21, the second direction Z being perpendicular to the first direction X; a first elastic member 40 along the second direction Z, the first elastic member 40 being disposed on the side of the busbar assembly 30 away from the battery cell assembly 20; and a cover 50 along the second direction Z, the cover 50 being disposed on the side of the first elastic member 40 away from the busbar assembly 30, the cover 50 pressing the electrical connecting piece 31 onto the connection terminal 211 of the corresponding battery cell 21 through the first elastic member 40, thereby realizing the electrical connection between the electrical connecting piece 31 and at least two battery cells 21. The battery assembly also includes a separator 60 located between the battery cell assembly 20 and the busbar assembly 30 along the second direction Z. The separator 60 is fixedly connected to the housing 10. The separator 60 has multiple limiting structures 63, with each electrical connecting piece 31 disposed within one limiting structure 63. Each limiting structure 63 has a through hole 61 opposite to the connection terminal 211 of the battery cell 21. The connection terminal 211 passes through the through hole 61 and connects to the electrical connecting piece 31. The connection terminal 211 of the battery cell 21 can move within the through hole 61 of the separator 60. The cover 50 is fixedly connected to the separator 60 to clamp the busbar assembly 30 and the first elastic member 40 located between the separator 60 and the cover 50. The edge and / or the center of the cover 50 are fixedly connected to the separator 60 by fasteners 80. Specifically, the separator 60 is snapped into the housing 10. The housing 10 includes a bottom wall and side walls fixedly connected to the bottom wall. The side walls include two opposing first side walls 11 and two opposing second side walls 12, which are connected to form a rectangular frame. The separator 60 is provided with a first snap-fit ​​structure 62, and the first side walls 11 and / or the second side walls 12 are provided with a second snap-fit ​​structure 13. The first snap-fit ​​structure 62 and the second snap-fit ​​structure 13 snap together. In some embodiments of this utility model, the first snap-fit ​​structure 62 is a protrusion, and the second snap-fit ​​structure 13 is a groove. The protrusion includes a guide portion 621 and an abutment portion 622. Along the second direction Z, the guide portion 621 is located on the side of the abutment portion 622 facing the bottom wall. The guide portion 621 is used to guide the abutment portion 622 into the second snap-fit ​​structure 13. The battery device also includes a second elastic member 70 along the second direction Z. The second elastic member 70 is disposed on the side of the battery cell assembly 20 away from the busbar assembly 30. The second elastic member 70 is used to cause the battery cell 21 to abut against the electrical connection piece 31 in the busbar assembly 30.The first sidewall 11 extends along the first direction X, and a dividing member is provided between two opposing first sidewalls 11. The dividing member is used to divide the accommodating space into multiple sub-spaces arranged along the first direction X, and a battery cell 21 is inserted into each sub-space. The dividing member includes two dividing strips 14, each dividing strip 14 extending along the second direction Z, and the two dividing strips 14 are correspondingly installed on the two first sidewalls 11; along the third direction Y, the two dividing strips 14 are spaced apart, and the third direction Y is perpendicular to both the first direction X and the second direction Z.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The housing (10) has a receiving space; A battery cell assembly (20) is located within the receiving space, the battery cell assembly (20) comprising at least two battery cells (21) arranged along a first direction (X). A busbar assembly (30) is disposed on the side of the battery cell assembly (20) having a connection terminal (211) along a second direction (Z). The busbar assembly (30) includes an electrical connection piece (31) for electrically connecting at least two battery cells (21). The second direction (Z) is perpendicular to the first direction (X). A first elastic element (40) is disposed along the second direction (Z) on the side of the busbar assembly (30) away from the battery cell assembly (20); The cover (50) is disposed on the side of the first elastic member (40) away from the busbar assembly (30) along the second direction (Z). The cover (50) presses the electrical connecting piece (31) onto the corresponding connection terminal (211) of the battery cell (21) through the first elastic member (40) to realize the electrical connection of the electrical connecting piece (31) with at least two battery cells (21).

2. The battery device as claimed in claim 1, characterized in that, It also includes an isolator (60) along the second direction (Z), the isolator (60) being located between the battery cell assembly (20) and the busbar assembly (30), and the isolator (60) being fixedly connected to the housing (10); The isolation member (60) is provided with a plurality of limiting structures (63), and each electrical connector (31) is disposed in one of the limiting structures (63). The limiting structure (63) is provided with a through hole (61) at the position opposite to the connection terminal (211) of the battery cell (21). The connection terminal (211) passes through the through hole (61) and is connected to the electrical connector (31).

3. The battery device as claimed in claim 2, characterized in that, The cover (50) is fixedly connected to the isolator (60) to clamp the manifold assembly (30) and the first elastic member (40) located between the isolator (60) and the cover (50).

4. The battery device as claimed in claim 3, characterized in that, The edge of the cover (50) and / or the middle part of the cover (50) are fixedly connected to the separator (60) by fasteners (80).

5. The battery device as claimed in claim 2, characterized in that, The isolation component (60) is snapped into the housing (10).

6. The battery device as claimed in claim 5, characterized in that, The box (10) includes a bottom wall and side walls fixedly connected to the bottom wall. The side walls include two first side walls (11) and two second side walls (12) arranged opposite to each other. The two first side walls (11) and the two second side walls (12) are connected to form a rectangular frame. The isolation member (60) is provided with a first snap-fit ​​structure, and the first side wall (11) and / or the second side wall (12) are provided with a second snap-fit ​​structure (13), and the first snap-fit ​​structure is snapped into the second snap-fit ​​structure (13).

7. The battery device as claimed in claim 6, characterized in that, The first snap-fit ​​structure is a protrusion, and the second snap-fit ​​structure (13) is a groove.

8. The battery device as claimed in claim 7, characterized in that, The protrusion includes a guide portion and an abutment portion. Along the second direction (Z), the guide portion is located on the side of the abutment portion facing the bottom wall; the guide portion is used to guide the abutment portion into the second snap-fit ​​structure (13).

9. The battery device according to any one of claims 1-8, characterized in that, It also includes a second elastic element (70) along a second direction (Z), the second elastic element (70) being disposed on the side of the battery cell assembly (20) away from the busbar assembly (30), the second elastic element (70) being used to cause the battery cell (21) to abut against the electrical connection piece (31) in the busbar assembly (30).

10. The battery device as claimed in claim 6, characterized in that, The first sidewall (11) extends along the first direction (X), and a dividing member is provided between two opposite first sidewalls (11). The dividing member is used to divide the accommodating space into a plurality of subspaces arranged along the first direction (X), and the battery cell (21) is inserted into each subspace.

11. The battery device as claimed in claim 10, characterized in that, The dividing element includes two dividing strips (14), each dividing strip (14) extending along the second direction (Z), and the two dividing strips (14) are respectively installed on the two first sidewalls (11); Along a third direction (Y), a gap is formed between the two dividing strips (14), and the third direction (Y) is perpendicular to both the first direction (X) and the second direction (Z).

12. An electrical appliance, characterized in that, Includes a battery device as described in any one of claims 1-11, the battery device being used to provide electrical energy.

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