Battery device and electric device

Abstract

The invention relates to the technical field of battery structures, and provides a battery device and a power utilization device.A containing space is formed in a frame of a box body of the battery device, battery monomers are contained in the containing space, and at least part of a main body section of an electric connecting piece bag is arranged in a first containing cavity of a first beam body of the frame; in the length direction of the first beam body, at least one end of the first beam body is provided with an avoiding groove used for communicating the first accommodating cavity and the accommodating space, and the connecting section penetrates through the avoiding groove on the same side and is electrically connected with the battery monomer; according to the battery device provided by the embodiment of the invention, at least part of the main body section of the electric connecting piece is arranged in the first accommodating cavity of the first beam body, and the accommodating space occupied by the main body section is effectively reduced, so that the influence of the arrangement of the electric connecting piece on the accommodating of the battery monomer assembly is relatively low; and therefore, the influence on the energy density of the battery device is relatively low.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] In the related art, the battery device includes a box body, a battery cell assembly and an electrical connector contained in the box body, and the electrical connector is used to electrically connect with the battery cell assembly to achieve electrical conduction. However, the layout of the electrical connector will occupy the accommodation space inside the box body, thereby encroaching on the space used to accommodate the battery cell assembly, which will further affect the energy density of the battery device. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a battery device and an electrical device, aiming to solve the problem in the related art that the electrical connector occupies the storage space inside the box, resulting in a reduction in the storage space for accommodating battery monomer components, which in turn affects the energy density of the battery device.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is: In the first aspect, an embodiment of the present application provides a battery device, including a box body, a battery cell and an electrical connector; the box body includes a frame, the frame encloses a accommodating space; the frame includes a first beam body, a first accommodating cavity is formed inside the first beam body, and the first accommodating cavity runs through the first beam body along the length direction of the first beam body; at least one end of the first beam body is provided with an avoidance groove along the length direction of the first beam body, and the avoidance groove is connected to the first accommodating cavity and the accommodating space; the battery cells are arranged in sequence along the length direction of the first beam body to form a battery cell assembly, and the battery cell assembly is accommodated in the accommodating space; the electrical connector includes a main body section and connecting sections arranged at opposite ends of the main body section, at least a part of the main body section is inserted into the first accommodating cavity, and the connecting section is passed through the avoidance groove on the same side; the connecting section located at either end of the main body section is electrically connected to the battery cell assembly.

[0006] Beneficial effects of the embodiments of the present application: In the battery device provided by the embodiments of the present application, at least a portion of the main section of the electrical connector is arranged in the first beam body, so that the main section can be arranged using the internal space of the first beam body, and the connecting sections at the opposite ends of the main section can be passed through the avoidance groove and electrically connected to the battery cell assembly and other components to achieve electrical conduction; in the battery device provided by the embodiments of the present application, by disposing at least a portion of the main section of the electrical connector in the first beam body, the occupation of the accommodation space by the main section is effectively reduced, so that the arrangement of the electrical connector has less impact on the accommodation of the battery cell assembly, and further has less impact on the energy density of the battery device.

[0007] In some embodiments, at least one guide member is disposed on the main body segment, the guide member is inserted into the first accommodating cavity, and the guide member abuts against the inner wall surface of the first accommodating cavity.

[0008] By adopting the above-mentioned technical solution, by arranging a guide member on the main body section, during the process of inserting the main body section into the first accommodating cavity, the guide member abuts against the inner wall surface of the first accommodating cavity, so that the guide member can move more smoothly along the first accommodating cavity, and then the guide member can drive the main body section to be more smoothly guided and inserted into the first accommodating cavity, so as to improve the reliability of assembly.

[0009] In some embodiments, the battery device further includes a first fixing structure, and the guide member is fixedly connected to the main body segment via the first fixing structure.

[0010] By adopting the above technical solution, the guide member is fixedly connected to the main body section by using the first fixing structure, thereby reducing the probability of the guide member sliding relative to the main body section.

[0011] In some embodiments, the first fixing structure is an adhesive layer, the adhesive layer is disposed on the main body segment, and the guide member is fixed on the main body segment through the adhesive layer.

[0012] By adopting the above technical solution, the guide member is fixed by providing an adhesive layer on the main section, so as to achieve the purpose of fixing the guide member at the corresponding position.

[0013] In some embodiments, the guide member includes a guide body and at least one non-return structure. The guide body is arranged on the main body section. The non-return structure is arranged on at least one side surface of the guide body, and the non-return structure abuts against the inner wall surface of the first accommodating cavity.

[0014] By adopting the above-mentioned technical solution, the guide body part is used to be arranged on the main body section, and the non-return structure is used to abut against the inner wall surface of the first accommodating cavity. The action force between the non-return structure and the inner wall surface of the first accommodating cavity can hinder the movement of the main body section and the guide member, so as to reduce the probability of the guide member and the main body section moving out of the first accommodating cavity, thereby improving the stability of the main body section inserted in the first accommodating cavity.

[0015] In some embodiments, the non-return structure includes a connecting portion and a non-return portion, the connecting portion is arranged on the surface of the guide main body portion, the non-return portion is arranged on the connecting portion, and the non-return portion is elastic; the non-return portion is an arc-shaped structure, and the outer arc surface of the non-return portion abuts against the inner wall surface of the first accommodating cavity.

[0016] By adopting the above technical solution, when the main body segment has a tendency to move out of the first accommodating cavity, the anti-return portion with an arc-shaped structure can act on the inner wall surface of the first accommodating cavity to prevent the main body segment from moving out.

[0017] In some embodiments, a gap is formed between the non-return portion and the guide body portion.

[0018] By adopting the above technical solution, when the main section moves along the length direction of the first beam body and toward the outer arc surface of the non-return portion and is inserted into the first accommodating cavity for assembly, the non-return portion can deform toward the gap to make the insertion process of the guide main section and the main section smoother.

[0019] In some embodiments, both opposite side surfaces of the guide body are provided with non-return structures.

[0020] By adopting the above technical solution, the opposite sides of the guide body portion can act on the inner wall surface of the first accommodating cavity through the non-return structure, so as to further improve the stability of the main body section inserted in the first accommodating cavity.

[0021] In some embodiments, a through installation hole is opened on the guide body portion, and the main body section is inserted into the installation hole.

[0022] By adopting the above technical solution, the guide main body part can be sleeved on the main body section through the mounting hole provided therein to achieve assembly.

[0023] In some embodiments, a buffer structure is disposed on the guide body, and the buffer structure abuts against the inner wall surface of the first accommodating cavity.

[0024] By adopting the above technical solution, by arranging a buffer structure on the guide body and abutting against the inner wall surface of the first accommodating cavity, the buffer structure can support the guide body to improve the stability of the guide body and the electrical connector.

[0025] In some embodiments, buffer structures are provided on both opposite side surfaces of the guide body.

[0026] By adopting the above-mentioned technical solution, by simultaneously arranging the buffer structure on the opposite sides of the guide main body, the opposite sides of the guide main body can form a buffer by abutting against the inner wall surface of the first accommodating cavity through the buffer structure, thereby being able to further improve the stability of the guide main body and the electrical connector.

[0027] In some embodiments, in the first direction, both side surfaces of the guide body are provided with a non-return structure, and in the second direction, both side surfaces of the guide body are provided with a buffer structure; wherein the first direction, the second direction and the length direction of the first beam are perpendicular to each other.

[0028] By adopting the above technical solution, by simultaneously providing a check structure on the two opposite side surfaces of the guide body along the first direction, and providing a buffer structure on the two opposite side surfaces of the guide body along the second direction, the assembly stability of the guide body and the main section can be further improved.

[0029] In a second aspect, an embodiment of the present application further provides an electrical device, including a battery device as described above, and the battery device is used to provide electrical energy.

[0030] Beneficial effects of the embodiments of the present application: The electrical device provided in the embodiments of the present application includes the above-mentioned battery device. When the energy density of the above-mentioned battery device is high, the performance of the electrical device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application; Figure 2 An exploded view of a battery device provided in an embodiment of the present application; Figure 3 A schematic diagram of the exploded structure of a battery cell provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of a frame using a first beam body provided in an embodiment of the present application; Figure 5 for Figure 4 A local enlarged schematic diagram of point A; Figure 6 for Figure 4 A local enlarged schematic diagram of point B; Figure 7 A schematic diagram of a structure in which a first beam body and an electrical connector are assembled into one body provided in an embodiment of the present application.

[0033] Among them, the reference numerals in the figure are: 1000. Vehicles; 100, battery device; 200, controller; 300, motor; 10. Box; 101. Accommodation space; 110. Frame; 111. First beam; 111a. First accommodation cavity; 111b. Avoidance groove; 11. First box; 12. Second box; L, length direction; 20. Battery cell; 210. Battery cell assembly; 21. End cover; 21a. Electrode terminal; 22. Shell; 23. Electrode assembly; 23a. Tab; 30. Electrical connector; 31. Main body section; 32. Connecting section; 40. guide member; 41. guide body; 42. non-return structure; 421. connecting portion; 422. non-return portion; X, first direction; Y, second direction; 50. Buffer structure. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "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 this application can be understood according to specific circumstances.

[0038] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power 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 military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0039] In the related art, the battery device includes a box body, a battery cell assembly and an electrical connector contained in the box body, and the electrical connector is used to electrically connect to the battery cell assembly to achieve electrical conduction. However, the layout of the electrical connector will occupy the accommodation space inside the box body, thereby encroaching on the space for accommodating the battery cell assembly, that is, the effective space for accommodating the battery cell assembly is smaller, which will further affect the overall energy density of the battery device.

[0040] Based on the above considerations, in order to solve the problem in the related art that the electrical connector occupies the storage space inside the box body, resulting in a reduction in the storage space for accommodating the battery cell assembly, which in turn affects the energy density of the battery device, a battery device is designed. By disposing at least a part of the main section of the electrical connector in the first storage cavity of the first beam body, the connecting sections at the opposite ends of the main section can be electrically connected to the corresponding components at the two ends of the battery cell assembly respectively; in this way, the main section of the electrical connector can be arranged by using the internal space of the first beam body, and the occupation of the storage space by the main section of the electrical connector can be effectively reduced, so that the layout of the electrical connector has less impact on the storage of the battery cell assembly, and thus has less impact on the energy density of the battery device.

[0041] The battery cell disclosed in the embodiments of the present application can be used in an electrical device that uses a battery device as a power source or in various energy storage systems that use a battery device as an energy storage element. The electrical device can be, but is 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, and the like. 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, an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0042] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0043] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0044] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0045] Please refer to Figure 2 , Figure 2 An exploded view of a battery device 100 provided in some embodiments of the present application. The battery device 100 mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel, or in mixed connection through a busbar.

[0046] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20 .

[0047] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0048] In some embodiments, the battery device may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case 10 .

[0049] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module in the box body 10 .

[0050] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 20 to the case 10 .

[0051] As an example, the box 10 may include a first box 11 and a second box 12. The first box 11 and the second box 12 are buckled together to form a closed space inside the box 10 to accommodate the battery cell assembly. The closed space here means to cover or close, which can be sealed or unsealed. The first box 11 can be a top cover or a bottom plate.

[0052] As an example, the box body 10 may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body 10 to accommodate the battery cell assembly.

[0053] In some embodiments, the box 10 can be used as a part of the chassis structure of the vehicle 1000. For example, part of the box 10 can become at least a part of the floor of the vehicle 1000, or part of the box 10 can become at least a part of the cross beam and longitudinal beam of the vehicle 1000.

[0054] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells 20, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0055] In the embodiment of the present application, the battery cell 20 may be a secondary battery. A secondary battery refers to a battery cell 20 that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0056] The battery cell 20 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0057] Please refer to Figure 3 , Figure 3 The schematic diagram of the exploded structure of the battery cell 20 provided in some embodiments of the present application. The battery cell 20 refers to the smallest unit constituting the battery device 100. Figure 3 The battery cell 20 includes an end cover 21, a shell 22, an electrode assembly 23 and other functional components.

[0058] The end cap 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the shell 22 to match the shell 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 21 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and improved reliability. Functional components such as electrode terminals 21a can be provided on the end cap 21. The electrode terminal 21a can be used to electrically connect to the electrode assembly 23 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 21 can also be a variety of materials, for example, the material of the end cap 21 can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating member may be provided inside the end cap 21, and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0059] The shell 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, the electrolyte and other components. The shell 22 and the end cap 21 can be independent components, and an opening can be set on the shell 22, and the internal environment of the battery cell 20 is formed by covering the opening with the end cap 21 at the opening. Without limitation, the end cap 21 and the shell 22 can also be integrated. Specifically, the end cap 21 and the shell 22 can form a common connection surface before other components are put into the shell, and when the interior of the shell 22 needs to be encapsulated, the end cap 21 covers the shell 22. The shell 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the shell 22 can be various, for example, the shell 22 can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0060] The electrode assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 23 may be included in the housing 22. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 23, and the parts of the positive and negative electrode sheets without active materials each constitute a tab 23a. The positive tab and the negative tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tab 23a connects the electrode terminal 21a to form a current loop.

[0061] According to some embodiments of the present application, referring to Figures 2 to 4 The embodiment of the present application provides a battery device 100, including a box body 10, a battery cell 20 and an electrical connector 30; the box body 10 includes a frame 110, and the frame 110 encloses a housing space 101; the frame 110 includes a first beam body 111, and a first housing cavity 111a is formed inside the first beam body 111, and the first housing cavity 111a penetrates the first beam body 111 along the length direction L of the first beam body 111; along the length direction L of the first beam body 111, at least one end of the first beam body 111 is provided with an avoidance groove 111b, and the avoidance groove 111b is connected to the first accommodating cavity 111a and the accommodating space 101; the battery cells 20 are arranged in sequence along the length direction L of the first beam 111 to form a battery cell assembly 210, and the battery cell assembly 210 is accommodated in the accommodating space 101; the electrical connector 30 includes a main body section 31 and connecting sections 32 arranged at opposite ends of the main body section 31, at least part of the main body section 31 is inserted into the first accommodating cavity 111a, and the connecting section 32 is passed through the avoidance groove 111b on the same side; the connecting section 32 located at either end of the main body section 31 is electrically connected to the battery cell assembly 210.

[0062] The box body 10 includes a frame 110, and a receiving space 101 is formed inside the frame 110; it should be understood that the frame 110 may refer to a frame structure formed by connecting multiple beam structures end to end in sequence, for example, it may be, but not limited to, a polygonal frame 110 such as a triangular frame 110 or a rectangular frame 110. The internal hollow area enclosed by the multiple beam structures may be the receiving space 101, and the battery cell assembly 210 may be accommodated in the receiving space 101.

[0063] It should be understood that in some embodiments, a bracket, a plate body and other structures may also be provided on the frame 110; illustratively, the bottom of the frame 110 may be fixedly connected to the bottom plate, and the bottom plate and the frame 110 may be used to further define a housing space 101 for accommodating the battery cell assembly 210; or, the top and bottom of the frame 110 may be fixedly connected to the top plate and the bottom plate at the same time, and the top plate and the bottom plate may be sealed to the frame 110 to form a closed housing space 101.

[0064] The first beam 111 refers to a beam arranged along a specific direction among the multiple beams enclosing the frame 110; the above-mentioned specific direction refers to the direction in which the multiple battery cells 20 are arranged in sequence to form the battery cell assembly 210, that is, the length direction L of the first beam 111 is parallel to the arrangement direction of the multiple battery cells 20 in the battery cell assembly 210. Optionally, the number of the first beams 111 can be one or two; illustratively, when the frame 110 encloses a triangular frame structure, the number of the first beams 111 is one; when the frame 110 encloses a rectangular frame structure, the number of the first beams 111 is two.

[0065] Exemplarily, in some embodiments, the frame 110 may be a rectangular structure frame 110 , and the frame 110 includes two parallel first beams 111 , and at least one main body section 31 of the electrical connector 30 is disposed inside each of the two first beams 111 .

[0066] The first accommodating cavity 111a is an internal cavity that penetrates the first beam body 111. Optionally, the first beam body 111 may be a profile beam, and a cavity that penetrates along its own length direction L is formed inside the profile beam, and the first accommodating cavity 111a may be one of the cavities of the profile beam, and the first accommodating cavity 111a is connected to the outside only at two opposite ends of the first beam body 111 along its own length direction L; or, the first beam body 111 may be a roller-pressed beam, and the roller-pressed beam may be reserved to form the first accommodating cavity 111a according to demand.

[0067] Exemplarily, in some embodiments, the electrical connector 30 can be assembled by inserting the linear electrical connector 30 into the first accommodating cavity 111a along one end until both opposite ends of the electrical connector 30 are partially exposed in the first accommodating cavity 111a, and then bending the exposed portion of the electrical connector 30 to form a connecting section 32 for forming an electrical connection with the battery cell assembly 210 or other components.

[0068] The electrical connector 30 may refer to a conductive structure for electrically connecting the battery cell 20; optionally, the electrical connector 30 may be, but is not limited to, a wire row or wire harness made of a material with good conductive properties such as a copper wire row, a silver wire row, a gold wire row, an aluminum wire row, or an alloy wire row. It should be understood that the surface of the conductive structure of the electrical connector 30 is provided with an insulating layer (such as an insulating film layer, an insulating plastic seal, an insulating coating, etc.), and the electrical connector 30 is only exposed at the connecting portion of the connecting section 32 to achieve electrical connection.

[0069] The number of the electrical connectors 30 may be one or more, and at least part of the main sections 31 of one or more electrical connectors 30 may be respectively disposed in the first beam body 111. It should be understood that the main section 31 and the connecting section 32 of the electrical connector 30 refer to different parts on the electrical connector 30; the main section 31 refers to the main part of the electrical connector 30, and the connecting section 32 refers to the connecting part located at the opposite ends of the main section 31 and used to connect other components to form electrical conduction. Exemplarily, the connecting section 32 at either end can be electrically connected to the battery cell 20, and the connecting section 32 at the other end can be connected to other components (for example, but not limited to, high-voltage boxes, pre-connectors, etc.) to achieve electrical conduction of the battery cell 20, thereby enabling charging or discharging operations.

[0070] Among them, the connecting section 32 and the main section 31 can be an integrated structure, by bending the opposite ends of the electrical connector 30 to form the connecting sections 32 at the two ends, and the middle unbent part of the electrical connector 30 is the main section 31; or, the connecting section 32 can be fixedly connected to the end of the main section 31 by welding or the like and connected to form a whole.

[0071] When the electrical connector 30 is arranged, at least a portion of the main body section 31 thereof can be disposed in the first beam body 111 , so that the occupation of the accommodation space 101 by the arrangement of the main body section 31 is reduced.

[0072] Along the length direction L of the first beam body 111, at least one end of the first beam body 111 is provided with an avoidance groove 111b; it should be understood that the avoidance groove 111b is connected to the first accommodating cavity 111a and the accommodating space 101, that is, the avoidance groove 111b is provided on one side wall of the first beam body 111 facing the accommodating space 101.

[0073] Optionally, a shunting groove 111b may be provided at one end of the first beam body 111; or, a shunting groove 111b may be provided at both opposite ends of the first beam body 111. By providing the shunting groove 111b and connecting the first accommodating cavity 111a and the accommodating space 101, the connecting segments 32 provided at the opposite ends of the main body segment 31 may be provided at any position of the shunting groove 111b, so as to facilitate the connection operation between the connecting segment 32 and the battery cell assembly 210 or other components.

[0074] For example, in some embodiments, when the opposite ends of the electrical connector 30 are bent to form a connecting segment 32, the bending lengths of the opposite ends of the electrical connector 30 can be adjusted as needed, and the avoidance groove 111b can avoid the formation of the connecting segment 32, thereby facilitating the connection operation between the connecting segment 32 and the battery cell assembly 210 or other components.

[0075] In the battery device 100 provided in the embodiment of the present application, at least a portion of the main section 31 of the electrical connector 30 is disposed in the first beam 111, so that the main section 31 can be arranged using the first accommodating cavity 111a inside the first beam 111, and the connecting sections 32 at opposite ends of the main section 31 are respectively used to electrically connect the battery cell 20 and other components to achieve electrical conduction; in the battery device 100 provided in the embodiment of the present application, by disposing at least a portion of the main section 31 of the electrical connector 30 in the first accommodating cavity 111a inside the first beam 111, the occupation of the accommodating space 101 by the main section 31 is effectively reduced, so that the arrangement of the electrical connector 30 has less impact on the accommodation of the battery cell assembly 210, and thus has less impact on the energy density of the battery device 100. At the same time, since at least a portion of the main section 31 of the electrical connector 30 is disposed in the first accommodating cavity 111a, the probability of the main section 31 squeezing the battery cell 20 in the accommodating space 101 and causing damage to the battery cell 20 under conditions such as collision and impact is also lower, and the reliability of the battery device 100 is better.

[0076] Please refer to Figures 4 to 7 In some embodiments, at least one guide member 40 is provided on the main body section 31. The guide member 40 is inserted into the first accommodating cavity 111a, and the guide member 40 abuts against the inner wall surface of the first accommodating cavity 111a.

[0077] The guide member 40 may refer to a structural member disposed on the main section 31 of the electrical connector 30 and used to guide the insertion into the first accommodating cavity 111a. Optionally, the guide member 40 may be, but is not limited to, a block structure, a bracket structure, a rod structure, etc.; the number of the guide members 40 may be one or more than one. When the number of the guide members 40 is multiple, the multiple guide members 40 may be sequentially spaced on the main section 31. The guide member 40 may be fixed to the main section 31 by bonding, clamping, sleeve connection, etc. Exemplarily, in some embodiments, the guide member 40 can adopt a guide block with a block-shaped structure, which is sleeved and fixed on the main section 31, and the outer structure of the guide member 40 is roughly the same as the cavity configuration of the first accommodating cavity 111a; when the electrical connector 30 is inserted into the first accommodating cavity 111a, the guide member 40 can play a role in guiding the insertion to improve the stability of the insertion of the electrical connector 30.

[0078] In this way, by providing a guide member 40 on the electrical connector 30, during the process of inserting the electrical connector 30 into the first accommodating cavity 111a, the guide member 40 abuts against the inner wall surface of the first accommodating cavity 111a, so that the guide member 40 can move more smoothly along the first accommodating cavity 111a, and then the guide member 40 can drive the electrical connector 30 to be more smoothly guided and inserted into the first accommodating cavity 111a, so as to improve the reliability of assembly.

[0079] Please refer to Figures 4 to 7 In some embodiments, the battery device 100 further includes a first fixing structure (not shown in the figure), and the guide member 40 is fixedly connected to the main body section 31 through the first fixing structure.

[0080] Optionally, the first fixing structure includes but is not limited to an adhesive layer, a cable tie, an adhesive tape, etc. For example, taking the adhesive layer as an example, an adhesive layer can be preset at a corresponding position of the main section 31, and the adhesive fixation is achieved by moving the guide member 40 to the position where the adhesive layer is preset.

[0081] With such arrangement, the guide member 40 is fixedly connected to the main body section 31 of the electrical connector 30 by utilizing the first fixing structure, thereby reducing the probability of the guide member 40 sliding relative to the main body section 31 .

[0082] Please refer to Figures 4 to 7 In some embodiments, the first fixing structure is an adhesive layer (not shown in the figure), the adhesive layer is arranged on the main body section 31, and the guide member 40 is fixed on the main body section 31 through the adhesive layer.

[0083] In this embodiment, an adhesive layer is used as the first fixing structure, and the adhesive layer is arranged on the main section 31 of the electrical connector 30; illustratively, the adhesive layer can be pre-coated at a preset position of the main section 31; for example, when eight guide members 40 need to be arranged on the main section 31, eight adhesive layers can be correspondingly coated on the main section 31, and then the eight guide members 40 are correspondingly assembled to the preset positions, so that the eight guide members 40 are respectively fixed at the preset positions of the main section 31 through the adhesive layers.

[0084] In this way, the guide member 40 is fixed by providing an adhesive layer on the main section 31, so as to achieve the purpose of bonding and fixing the guide member 40 at the corresponding position.

[0085] Please refer to Figure 4 and Figure 5 In some embodiments, the guide member 40 includes a guide body portion 41 and at least one non-return structure 42. The guide body portion 41 is disposed on the main body section 31. The non-return structure 42 is disposed on at least one side surface of the guide body portion 41. The non-return structure 42 abuts against the inner wall surface of the first accommodating cavity 111a.

[0086] The guide member 40 includes a guide body portion 41 and at least one check structure 42; the guide body portion 41 may refer to a portion connected to the main section 31, and optionally, the guide body portion 41 may be a block structure, such as a rectangular block, a columnar block, a spherical block, or the like.

[0087] The non-return structure 42 is used to realize the non-return function, and the non-return structure 42 is arranged on the surface of the guide body 41. Optionally, the non-return structure 42 can be integrally formed on the guide body 41, or the non-return structure 42 can be fixedly connected to the guide body 41 by means of snap connection, bonding, etc.

[0088] A non-return structure 42 is provided on at least one side surface of the guide body portion 41; optionally, the non-return structure 42 can be provided on any surface of the guide body portion 41 facing the inner wall surface of the first accommodating cavity 111a; or, the non-return structure 42 can be provided on at least two surfaces of the guide body portion 41 facing the inner wall surface of the first accommodating cavity 111a; illustratively, the non-return structure 42 can be provided on both opposite side surfaces of the guide body portion 41.

[0089] The non-return structure 42 abuts against the inner wall of the first accommodating cavity 111a; thus, when there is a tendency for relative movement between the non-return structure 42 and the inner wall of the first accommodating cavity 111a, an interaction force will be formed between the non-return structure 42 and the inner wall of the first accommodating cavity 111a, thereby hindering the movement of the guide body portion 41 and the main body section 31 relative to the inner wall of the first accommodating cavity 111a.

[0090] In this way, the guide body portion 41 is used to be arranged on the main section 31 of the electrical connector 30, and the non-return structure 42 is used to abut against the inner wall of the first accommodating cavity 111a. The force between the non-return structure 42 and the inner wall of the first accommodating cavity 111a can hinder the movement of the main section 31 and the guide member 40, so as to reduce the probability of relative movement between the guide member 40 and the main section 31, thereby improving the stability of the main section 31 inserted in the first accommodating cavity 111a.

[0091] Please refer to Figure 4 and Figure 5 In some embodiments, the non-return structure 42 includes a connecting portion 421 and a non-return portion 422. The connecting portion 421 is arranged on the surface of the guide body portion 41, and the non-return portion 422 is arranged on the connecting portion 421. The non-return portion 422 is elastic; the non-return portion 422 is an arc-shaped structure, and the outer arc surface of the non-return portion 422 abuts against the inner wall surface of the first accommodating cavity 111a.

[0092] The connection portion 421 refers to a portion of the non-return structure 42 used to form a connection with the guide body 41. Optionally, the connection portion 421 may be, but is not limited to, a block structure, a sheet structure, a rod structure, etc.; one end of the connection portion 421 is connected to the surface of the guide body 41, and the other end of the connection portion 421 is connected to the non-return portion 422.

[0093] The non-return portion 422 refers to the portion of the non-return structure 42 that is used to contact the inner wall surface of the first accommodating cavity 111a. The non-return portion 422 is an arc-shaped structure, and the outer arc surface of the non-return portion 422 abuts against the inner wall surface of the first accommodating cavity 111a; it should be understood that the side surface of the non-return portion 422 facing away from the curvature center of its arc structure is the outer arc surface, and the side surface of the non-return portion 422 facing the curvature center of its arc structure is the inner arc surface.

[0094] The non-return portion 422 is elastic; thus, when the main body section 31 has a tendency to move back toward the inner arc surface of the non-return portion 422, the arc-shaped non-return portion 422 is subjected to the force of the inner wall surface of the first accommodating cavity 111a and has a tendency to expand toward the outer arc surface of the non-return portion 422, thereby increasing the force between the non-return portion 422 and the inner wall surface of the first accommodating cavity 111a, so as to achieve the purpose of hindering the movement of the guide main body portion 41, thereby achieving a non-return effect.

[0095] Exemplarily, in some embodiments, the non-return structure 42 can be an arc-shaped sheet structure, wherein one end of the arc-shaped sheet structure used to connect to the guide main body portion 41 is a connecting portion 421, and the other end of the arc-shaped sheet structure used to abut against the inner wall surface of the first accommodating cavity 111a is a non-return portion 422; when the main body segment 31 has a tendency to move out in the direction opposite to the insertion direction (i.e., toward either end direction in the length direction L of the first beam body 111), the inner wall surface of the first accommodating cavity 111a forms a force on the arc-shaped sheet structure, causing the arc-shaped sheet structure to have a tendency to unfold, thereby increasing the interaction force between the arc-shaped sheet structure and the inner wall surface of the first accommodating cavity 111a, thereby achieving the effect of hindering the movement of the guide main body portion 41 and the main body segment 31 and forming a non-return effect.

[0096] In this way, the arc-shaped non-return portion 422 can act on the inner wall surface of the first accommodating cavity 111 a to prevent the main body section 31 from moving out.

[0097] Please refer to Figure 4 and Figure 5 In some embodiments, a gap is formed between the check portion 422 and the guide body portion 41 .

[0098] In this embodiment, a gap is arranged between the check portion 422 and the guide main body portion 41; thus, during the normal assembly process of inserting the main body section 31 into the first accommodating cavity 111a, the outer arc surface of the check portion 422 is arranged toward the direction of the first accommodating cavity 111a; the check portion 422 with an arc-shaped structure is subjected to the force of the inner wall surface of the first accommodating cavity 111a and has a tendency to be pressed downward toward the inner arc surface of the check portion 422; at this time, the gap between the check portion 422 and the guide main body portion 41 allows the check portion 422 to be pressed downward and deformed, so that the guide main body portion 41 and the main body section 31 can be smoothly moved and inserted into the first accommodating cavity 111a.

[0099] Please refer to Figure 4 and Figure 5 In some embodiments, non-return structures 42 are provided on opposite side surfaces of the guide body portion 41 .

[0100] In this embodiment, by providing non-return structures 42 on the opposite side surfaces of the guide main body 41, when the main body section 31 has a tendency to move out in the opposite direction of the insertion direction, the non-return structures 42 on the opposite sides of the guide main body 41 can form an interaction force with the inner wall surface of the first accommodating cavity 111a; in this way, the non-return structure 42 has a better non-return effect on the guide main body 41.

[0101] For example, in some embodiments, the guide body portion 41 may be a rectangular block structure, and the guide body portion 41 may be provided with non-return structures 42 on opposite side surfaces in a direction perpendicular to the length direction L of the first beam body 111 .

[0102] With such a configuration, the two opposite sides of the guide body portion 41 can act on the inner wall surface of the first accommodating cavity 111 a through the non-return structure 42 , so as to further enhance the stability of the main body section 31 inserted into the first accommodating cavity.

[0103] Please refer to Figure 4 and Figure 5 In some embodiments, a through-going mounting hole (not shown in the figure) is opened on the guide body portion 41, and the main body section 31 is inserted into the mounting hole.

[0104] In this embodiment, a mounting hole is provided on the guide body portion 41 , and the mounting hole is set to penetrate; thus, the mounting hole can be provided for the main section 31 to pass through, thereby achieving the purpose of the guide body portion 41 being sleeved on the main section 31 .

[0105] Exemplarily, in some embodiments, the guide body portion 41 can be a rectangular block structure, and the mounting hole can be opened in the middle along the length direction of the guide body portion 41; in this way, the main body segment 31 can be inserted into the mounting hole, and the guide body portion 41 can be moved relative to the main body segment 31 to a position where the main body segment 31 is pre-coated with an adhesive layer to achieve fixed assembly of the guide body portion 41.

[0106] Please refer to Figure 4 , Figure 5 and Figure 7 In some embodiments, a buffer structure 50 is disposed on the guide body portion 41 , and the buffer structure 50 abuts against the inner wall surface of the first accommodating cavity 111 a .

[0107] Optionally, the buffer structure 50 may be, but is not limited to, a buffer foam, a buffer rubber, a buffer silicone, and the like. The buffer structure 50 may be fixed to the guide member 40 by bonding, clamping, sleeve connection, and the like. The number of the buffer structure 50 may be one or more. When the number of the buffer structure 50 is multiple, the multiple buffer structures 50 may be respectively arranged on different end surfaces of the guide body portion 41, for example, on opposite end surfaces of the guide body portion 41.

[0108] In this way, by providing the buffer structure 50 on the guide body 41 and abutting against the inner wall of the first accommodating cavity 111 a , the buffer structure 50 can support the guide body 41 to improve the stability of the guide body 41 and the electrical connector 30 .

[0109] Exemplarily, in some embodiments, the buffer structure 50 may be a buffer foam, and the buffer foam may be bonded to one or more end surfaces of the guide body portion 41; utilizing one or more buffer foams can improve the stability of the guide body portion 41 and the main body segment 31 in the first accommodating cavity 111a, thereby reducing the probability of the main body segment 31 shaking or moving in the first accommodating cavity 111a.

[0110] Please refer to Figure 4 , Figure 5 and Figure 7 In some embodiments, buffer structures 50 are provided on both side surfaces of the guide body portion 41 .

[0111] In this embodiment, by providing a buffer structure on both side surfaces of the guide main body 41, the opposite ends of the guide main body 41 can form abutment with the inner wall surface of the first accommodating cavity 111a through the buffer structure 50; in this way, the buffer structure 50 has a better buffering effect on the guide main body 41.

[0112] Please refer to Figure 4 , Figure 5 and Figure 7In some embodiments, in the first direction X, the two opposite side surfaces of the guide body portion 41 are provided with a non-return structure 42, and in the second direction Y, the two opposite side surfaces of the guide body portion 41 are provided with a buffer structure 50; wherein the first direction X, the second direction Y and the length direction of the first beam body 111 are perpendicular to each other.

[0113] It should be understood that the first direction X and the second direction Y are both directions perpendicular to the length direction L of the first beam body 111 , and the first direction X and the second direction Y are also perpendicular to each other.

[0114] For example, in some embodiments, the first direction X may be a width direction of the main body segment 31 , and the second direction Y may be a thickness direction of the main body segment 31 .

[0115] Taking the guide body 41 as a rectangular block structure as an example, the guide body 41 can be provided with a non-return structure 42 on the opposite side surfaces in the first direction X perpendicular to the length direction L of the first beam body 111; and the guide body 41 can be provided with a buffer structure 50 on the opposite side surfaces in the second direction Y perpendicular to the length direction L of the first beam body 111; in this way, the guide body 41 can have better stability under the joint action of the two buffer structures 50 on the opposite sides in the second direction Y and the two non-return structures 42 on the opposite sides in the first direction X. Next, the battery device 100 provided in the present application will be further described according to specific implementations.

[0116] Please refer to Figures 2 to 7 In this embodiment, the battery device 100 includes a box body 10, an electrical connector 30 and a plurality of battery cells 20; the box body 10 includes a frame 110 with an accommodating space 101 formed therein, and the frame 110 can be a rectangular frame structure; the frame 110 includes two first beams 111 arranged in parallel; the plurality of battery cells 20 are arranged in sequence along the length direction L of the first beams 111 to form a battery cell assembly 210, and the battery cell assembly 210 is accommodated in the accommodating space 101; the electrical connector 30 includes a main body section 31 and connecting sections 32 arranged at opposite ends of the main body section 31, at least a portion of the main body section 31 is arranged in the first beam 111, and the connecting section 32 at either end is electrically connected to the battery cell assembly 210.

[0117] A first accommodating cavity 111a may be formed inside the first beam body 111, and the first accommodating cavity 111a runs through the first beam body 111 along the length direction L of the first beam body 111. The main body section 31 may also be provided with a plurality of guide members 40 at intervals in sequence, the guide member 40 comprising a guide main body portion 41 and a non-return structure 42 provided at opposite ends of the guide main body portion 41, and a buffer structure 50 is further provided on the other two opposite end side surfaces of the guide main body portion 41. After the guide member 40 is inserted into the first accommodating cavity 111a along with the guide of the electrical connector 30, the non-return structure 42 and the buffer structure 50 can act on the inner wall surface of the first accommodating cavity 111a synchronously, so as to improve the stability of the main body section 31 when it is accommodated in the first accommodating cavity 111a.

[0118] Please refer to Figure 1 and Figure 2 In a second aspect, an embodiment of the present application further provides an electrical device, such as the above-mentioned vehicle 1000, the electrical device includes the above-mentioned battery device 100, and the battery device 100 is used to provide electrical energy.

[0119] The electric device provided in the embodiment of the present application includes the above-mentioned battery device 100. When the energy density of the above-mentioned battery device 100 is higher, the performance of the electric device is better.

[0120] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery device, characterized in that: include A box body, the box body includes a frame, the frame encloses a containing space; the frame includes a first beam body, a first containing cavity is formed inside the first beam body, and the first containing cavity runs through the first beam body along the length direction of the first beam body; along the length direction of the first beam body, at least one end of the first beam body is provided with an avoidance groove, and the avoidance groove is connected to the first containing cavity and the containing space; A plurality of battery cells, wherein the plurality of battery cells are sequentially arranged along the length direction of the first beam to form a battery cell assembly, and the battery cell assembly is accommodated in the accommodation space; and An electrical connector, comprising a main body section and connecting sections arranged at opposite ends of the main body section, at least a portion of the main body section is inserted into the first accommodating cavity, and the connecting section is passed through the avoidance groove on the same side; the connecting section located at either end of the main body section is electrically connected to the battery cell assembly.

2. The battery device according to claim 1, characterized in that: At least one guide member is disposed on the main body section. The guide member is inserted into the first accommodating cavity and abuts against an inner wall surface of the first accommodating cavity.

3. The battery device according to claim 2, characterized in that: The battery device further comprises a first fixing structure, and the guide member is fixedly connected to the main body segment via the first fixing structure.

4. The battery device according to claim 3, characterized in that: The first fixing structure is an adhesive layer, the adhesive layer is arranged on the main body section, and the guide member is fixedly arranged on the main body section through the adhesive layer.

5. The battery device according to claim 3, characterized in that: The guide member includes a guide body and at least one non-return structure. The guide body is arranged on the main body section. The non-return structure is arranged on at least one side surface of the guide body, and the non-return structure abuts against the inner wall surface of the first accommodating cavity.

6. The battery device according to claim 5, characterized in that: The non-return structure includes a connecting portion and a non-return portion, wherein the connecting portion is arranged on the surface of the guide main body portion, and the non-return portion is arranged on the connecting portion, and the non-return portion is elastic; the non-return portion is an arc-shaped structure, and the outer arc surface of the non-return portion abuts against the inner wall surface of the first accommodating cavity.

7. The battery device according to claim 6, characterized in that: A gap is formed between the non-return portion and the guide body portion.

8. The battery device according to any one of claims 5 to 7, characterized in that: The non-return structures are disposed on opposite side surfaces of the guide main body.

9. The battery device according to any one of claims 5 to 7, characterized in that: A through installation hole is provided on the guide main body portion, and the main body section is inserted through the installation hole.

10. The battery device according to any one of claims 5 to 7, characterized in that: The guide body is provided with a buffer structure, and the buffer structure abuts against the inner wall surface of the first accommodating cavity.

11. The battery device according to claim 10, characterized in that: The buffer structure is disposed on both opposite side surfaces of the guide main body.

12. The battery device according to claim 11, characterized in that: In the first direction, the two opposite side surfaces of the guide body are provided with the non-return structure, and in the second direction, the two opposite side surfaces of the guide body are provided with the buffer structure; wherein the first direction, the second direction and the length direction of the first beam are perpendicular to each other.

13. An electrical device, characterized in that: The invention comprises a battery device as claimed in any one of claims 1 to 12, wherein the battery device is used to provide electrical energy.

Images