Battery device and electric device
By setting a buffer between the frame of the battery device and the battery cell assembly, and fixing the wire harness using the channels on the buffer, the battery device reliability and wire harness fixing problems are solved, and higher energy density and reliability are achieved.
Patent Information
- Application Number
- CN202520269962.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2035-02-20
AI Technical Summary
The reliability problems of the battery device, especially in terms of rigid contact between the battery cell assembly and the frame and the fixation of the wire harness, make it difficult to popularize the battery device.
By setting a buffer between the frame and the battery cell assembly, and setting a channel on the buffer member to fix the wire harness, the buffering effect between the battery cell assembly and the frame and the stable fixation of the wire harness are achieved.
The reliability of the battery device is improved, the risk between the wire harness and the battery cell is reduced, and the space inside the battery device is saved, thereby increasing the energy density.
Smart Images
Figure CN222867869U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery technology, and in particular to 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. In this case, electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.
[0003] In the development of battery technology, the reliability of battery devices is an issue that cannot be ignored. If the reliability of a battery device is poor, it will be difficult for the battery device to be popularized. Therefore, how to improve the reliability of battery devices is a technical issue in battery technology that needs to be considered for a long time. Utility Model Content
[0004] The present application provides a battery device and an electrical device, which can improve the reliability of the battery device.
[0005] This application is achieved through the following technical solutions:
[0006] In a first aspect, an embodiment of the present application provides a battery device, including a frame, a battery cell assembly, a buffer and a wiring harness. The frame has an enclosed space, the battery cell assembly is arranged in the enclosed space, the battery cell assembly includes a plurality of battery cells, the buffer is provided with a channel, the wiring harness is electrically connected to the battery cell assembly, and the wiring harness is passed through the channel. A buffer is provided between the frame and the battery cell assembly; and / or, the battery device includes a plurality of battery cell assemblies, a plurality of battery cells in each battery cell assembly are arranged along a first direction, a plurality of battery cell assemblies are arranged along a second direction, a buffer is provided between two adjacent battery cell assemblies, and the second direction is perpendicular to the first direction.
[0007] In the above embodiments, by providing a buffer between the frame and the battery cell assembly, and / or providing a buffer between adjacent battery cell assemblies when the battery device includes multiple battery cell assemblies, a buffer can be provided, so that a buffer effect between the battery cell assembly and the frame can be achieved, and / or a buffer effect between adjacent battery cell assemblies can be achieved. According to the arrangement of the wire harness in the battery device, a channel is provided in the buffer, and the wire harness is passed through the channel. The wire harness can be fixed by the buffer, and while fixing the wire harness, the space inside the battery device can be saved, which can be beneficial to improving the energy density of the battery device. In addition, by providing a channel for accommodating the wire harness in the buffer, the generation of metal chips or burrs caused by providing a channel on the box beam can be reduced, thereby reducing the risk of scratching the wire harness and the battery cell, so as to achieve the purpose of improving the reliability of the battery device.
[0008] In some embodiments, the channel passes through two opposite ends of the buffer. This arrangement can facilitate the processing of the channel on the buffer. For example, when the buffer is a rectangular parallelepiped, the channel can pass through the surfaces of the two opposite sides of the buffer. Compared with setting a through hole on the adjacent surface to obtain the channel, the processing is easier, the processing efficiency is higher, and the processing cost is lower.
[0009] In some embodiments, the buffer has a first surface and a second surface arranged opposite to each other, the channel runs through the first surface and the second surface, the buffer also has a third surface, the third surface connects the first surface and the second surface, and the channel is a groove arranged on the third surface.
[0010] In the above embodiment, the channel passes through the first surface and the second surface of the buffer member that are relatively arranged, and by setting a groove to form the channel, it is convenient to form the channel on the buffer member, thereby achieving the purpose of easier processing, higher processing efficiency, and lower processing cost. In addition, setting the groove to form the channel can make the wiring harness better pass through the channel, so as to improve the assembly convenience of the wiring harness.
[0011] In some embodiments, the buffer has a first surface and a second surface that are oppositely disposed, and the channel is a through hole that penetrates the first surface and the second surface.
[0012] In the above embodiment, the channel passes through the first surface and the second surface of the buffer member that are relatively arranged, and the channel is formed by setting a through hole. While facilitating the formation of the channel on the buffer member, the channel can also better cover the wiring harness, thereby improving the protection performance of the wiring harness.
[0013] In some embodiments, the buffer member includes a first buffer portion and a second buffer portion which are separately arranged and abut against each other, the first buffer portion has a first groove on a side facing the second buffer portion, the second buffer portion has a second groove on a side facing the first buffer portion, and the first groove and the second groove together constitute a through hole.
[0014] In the above embodiment, the first groove and the second groove are arranged on the first buffer part and the second buffer part which are separately arranged and abut against each other, and the first groove and the second groove together form a through hole. When arranging the wiring harness, the wiring harness can be arranged in the first groove or the second groove first, and then the second buffer part or the first buffer part is covered, which can improve the convenience of assembling the wiring harness. In addition, the first buffer part and the second buffer part abut against each other, and the through hole formed by the first groove and the second groove can better wrap the wiring harness, thereby improving the protection performance of the wiring harness.
[0015] In some embodiments, the enclosed space has a first opening, and the battery device also includes a first cover plate, which is connected to the frame and closes the first opening. The first cover plate supports the battery cell assembly along the third direction, and the first buffer portion and the second buffer portion are relatively arranged along the third direction.
[0016] In the above embodiment, the first buffer portion and the second buffer portion are arranged relatively to each other along the third direction, which can facilitate the arrangement of the wiring harness. In a specific example, when arranging the buffer and the wiring harness, the second buffer portion can be placed between the frame and the battery cell assembly, or the second buffer portion can be placed in an adjacent battery cell assembly, and then the wiring harness can be placed in the second groove of the second buffer portion, and then the surface of the first buffer portion having the first groove is placed toward the second buffer portion, so that the first groove and the second groove form a through hole, and the wiring harness is placed in the formed through hole.
[0017] In some embodiments, the buffer also has a third surface, which connects the first surface and the second surface; the buffer includes a first abutting surface and a second abutting surface that abut each other, and the first abutting surface and the second abutting surface are both located between the through hole and the third surface, the first abutting surface connects the hole wall surface of the through hole and the third surface, and the second abutting surface connects the hole wall surface of the through hole and the third surface.
[0018] In the above embodiment, the first abutting surface and the second abutting surface that abut against each other can be separated from each other. When the battery device is in use, the first abutting surface and the second abutting surface abut against each other. When assembling the wiring harness or maintaining the battery device, the first abutting surface and the second abutting surface can be separated from each other to form an opening, so that the wiring harness can be placed or taken out through the formed opening, so as to facilitate the assembly and disassembly of the wiring harness.
[0019] In some embodiments, a buffer is disposed between the frame and the battery cell assembly, and the third surface faces the battery cell assembly, or the third surface faces away from the battery cell assembly.
[0020] In the above embodiment, when a buffer is provided between the frame and the battery cell assembly, the third surface is provided toward the battery cell assembly or away from the battery cell assembly, which can facilitate the arrangement of the wiring harness.
[0021] In some embodiments, a buffer is disposed between two adjacent battery cell assemblies, and the third surface faces any one of the two adjacent battery cell assemblies.
[0022] In the above embodiment, when a buffer is provided between two adjacent battery cell assemblies, the third surface is provided toward any one of the two adjacent battery cell assemblies to facilitate the arrangement of the wiring harness.
[0023] In some embodiments, the enclosed space has a first opening, and the battery device further includes a first cover plate, the first cover plate is connected to the frame and closes the first opening, and the third surface faces the first cover plate.
[0024] In the above embodiment, by arranging the third surface toward the first cover plate, the impact of the battery cell assembly and the frame squeezing the buffer, or the adjacent battery cell assemblies squeezing the buffer on the wiring harness can be reduced, thereby improving the reliability of the battery device.
[0025] In some embodiments, the wire harness is interference-fitted with the inner wall of the channel. This arrangement allows the wire harness to be pressed against the inner wall of the channel, which can better fix the wire harness, reduce the impact of the wire harness shaking on other components around it, and reduce damage to the wire harness, thereby improving the reliability of the battery device.
[0026] In some embodiments, a buffer is provided between the frame and the battery cell assembly, and the battery cell assembly and the frame cooperate to squeeze the buffer. This arrangement allows the buffer to be always in a squeezed state, thereby allowing the buffer to better absorb the expansion of the battery cell assembly, thereby achieving a better buffering effect.
[0027] In some embodiments, the buffer is bonded to the frame. This arrangement allows the buffer to be better fixed between the frame and the battery cell assembly to reduce the impact of the movement of the buffer on the battery device.
[0028] In some embodiments, a buffer is provided between two adjacent battery cell assemblies, and the two adjacent battery cell assemblies cooperate to squeeze the buffer. With this arrangement, the buffer can be always in a squeezed state, so that the buffer can better absorb the expansion of the battery cell assembly, thereby achieving a better buffering effect.
[0029] In some embodiments, the buffer is adhesively connected to the battery cell assembly. This arrangement can better fix the buffer between two adjacent battery cell assemblies to reduce the impact of the movement of the buffer on the battery device.
[0030] In some embodiments, the buffer is foam. With this configuration, the foam is used as the buffer, which can not only play a buffering role, but also play an insulating role, a gap filling role, a supporting and fixing role of the battery cell assembly, and a heat preservation role, so that the battery device can have better reliability.
[0031] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery device provided by any embodiment of the first aspect.
[0032] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0034] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;
[0035] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;
[0036] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application;
[0037] Figure 4 A schematic diagram of the structure of a battery device provided in some embodiments of the present application (a buffer is provided between the frame and the battery cell assembly);
[0038] Figure 5 for Figure 4 A local enlarged view at point A;
[0039] Figure 6 A schematic diagram of the structure of a battery device provided in some embodiments of the present application (a buffer is provided between adjacent battery cell assemblies);
[0040] Figure 7 for Figure 6 A local enlarged view at point B;
[0041] Figure 8 A schematic diagram of the structure of a buffer provided in some embodiments of the present application (the channel is a groove);
[0042] Fig. 9 A schematic diagram of the structure of a buffer provided in some embodiments of the present application (the channel is a through hole);
[0043] Fig.10 A schematic diagram of the structure of a battery device provided in some embodiments of the present application (showing a first buffer portion and a second buffer portion in a state of abutting each other);
[0044] Fig.11 A schematic diagram of the structure of a buffer provided in some embodiments of the present application (showing a first buffer portion and a second buffer portion separated from each other);
[0045] Fig.12 A schematic diagram of the structure of a battery device provided in some embodiments of the present application (showing a first abutment surface and a second abutment surface);
[0046] Fig.13 A schematic diagram of the structure of a battery device provided for some embodiments of the present application (showing that the third surface faces away from the battery cell assembly);
[0047] Fig.14 A schematic diagram of the structure of a battery device provided for some other embodiments of the present application (showing that the third surface faces the battery cell assembly);
[0048] Fig.15 A schematic structural diagram of a battery device provided for some embodiments of the present application (showing that the third surface faces the first cover plate).
[0049] icon:
[0050] 1000-vehicle; 100-battery device; 200-controller; 300-motor; 10-housing; 11-first housing; 12-second housing; 20-battery cell; 201-electrode terminal; 202-housing; 2021-shell; 2022-end cover; 203-electrode assembly; 30-battery cell assembly; 101-frame; 102-enclosed space; 103-first cover plate; 104-second cover plate; 40-buffer; 401-channel; 401a-groove; 401b-through hole; 402-first surface; 403-second surface; 404-third surface; 405-first buffer portion; 4051-first groove; 406-second buffer portion; 4061-second groove; 407-first abutment surface; 408-second abutment surface; 50-wiring harness; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION
[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0052] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.
[0053] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.
[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of 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.
[0055] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.
[0056] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.
[0057] The term “plurality” used in this application refers to two or more (including two).
[0058] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.
[0059] Battery cells include, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.
[0060] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.
[0061] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a polygonal battery cell, such as a hexagonal battery cell.
[0062] The battery device 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, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.
[0063] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly may be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells to form an independent module.
[0064] As an example, a battery module may be formed by bundling a plurality of battery cells by cable ties.
[0065] In some embodiments, the battery device may be a battery pack, which may include a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.
[0066] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.
[0067] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.
[0068] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.
[0069] As an example, the box body 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 to accommodate the battery cell assembly.
[0070] As an example, the box body can be used as a part of the chassis structure of the vehicle. For example, the top cover of the box body can become at least a part of the floor of the vehicle, or the frame of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.
[0071] In some embodiments, the battery device refers to an energy storage device, which includes a box body, at least one side of which is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, and the like.
[0072] In a battery device, multiple wiring harnesses need to be set up to realize the transmission of power, signal collection, and transmission of control instructions within the battery device. In order to reduce the impact caused by the shaking of the wiring harnesses, these wiring harnesses need to be fixed separately and centrally.
[0073] Currently, a channel can be set up by slotting on the box beam to accommodate the wiring harness, and then the wiring harness is fixed by a fixed cover plate. However, this method of setting the channel is likely to generate metal chips or burrs in the channel set in the box beam, and the metal chips or burrs may scratch the wiring harness and battery cells, resulting in poor reliability of the battery device.
[0074] In view of this, an embodiment of the present application provides a battery device, including a frame, a battery cell assembly, a buffer and a wiring harness. The frame has an enclosed space, the battery cell assembly is arranged in the enclosed space, the battery cell assembly includes a plurality of battery cells, the buffer is provided with a channel, the wiring harness is electrically connected to the battery cell assembly, and the wiring harness is passed through the channel. A buffer is provided between the frame and the battery cell assembly; and / or, the battery device includes a plurality of battery cell assemblies, a plurality of battery cells in each battery cell assembly are arranged along a first direction, a plurality of battery cell assemblies are arranged along a second direction, a buffer is provided between two adjacent battery cell assemblies, and the second direction is perpendicular to the first direction.
[0075] In such a battery device, by providing a buffer between the frame and the battery cell assembly, and / or providing a buffer between adjacent battery cell assemblies when the battery device includes multiple battery cell assemblies, a buffer can be provided, so that a buffering effect between the battery cell assembly and the frame and / or a buffering effect between adjacent battery cell assemblies can be achieved. According to the arrangement of the wire harness in the battery device, a channel is provided in the buffer, and the wire harness is passed through the channel. The wire harness can be fixed by the buffer, and while fixing the wire harness, the space inside the battery device can be saved, which can be beneficial to improving the energy density of the battery device. In addition, by providing a channel for accommodating the wire harness in the buffer, the generation of metal chips or burrs caused by providing a channel on the box beam can be reduced, thereby reducing the risk of scratching the wire harness and the battery cell, so as to achieve the purpose of improving the reliability of the battery device.
[0076] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery cells and battery devices, 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.
[0077] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.
[0078] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 is provided with a battery device 100 inside, and the battery device 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000, for example, the battery device 100 can be used as an operating power source of the vehicle 1000.
[0079] The vehicle 1000 may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery device 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .
[0080] 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.
[0081] Please refer to Figure 2 , Figure 2 Schematic diagram of the exploded structure of a battery device 100 according to some embodiments of the present application. The battery device 100 may include a battery cell 20 and a box 10 . The box 10 is used to accommodate the battery cell 20 .
[0082] Among them, a closed space for accommodating the battery cell 20 is formed inside the box 10, and the box 10 can adopt a variety of structures. In some embodiments, the box 10 may include a first box 11 and a second box 12, and the first box 11 and the second box 12 are buckled with each other. The first box 11 and the second box 12 can be in various shapes, such as a cuboid, a cylinder, etc. The first box 11 can be a hollow structure with one side open, and the second box 12 can also be a hollow structure with one side open. The open side of the second box 12 is buckled with the open side of the first box 11 to form a box 10 with a closed space. It is also possible that the first box 11 is a hollow structure with one side open, and the second box 12 is a plate-like structure. The second box 12 is buckled on the open side of the first box 11, so as to form a box 10 with a accommodating space.
[0083] In the battery device 100, there may be one or more battery cells 20. If there are more than one battery cell 20, the battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the battery cells 20 are connected in series and in parallel. A battery module may be formed by connecting a plurality of battery cells 20 in series, in parallel, or in a mixed connection, and then the plurality of battery modules are connected in series, in parallel, or in a mixed connection to form a whole and accommodated in the box 10. Alternatively, all the battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by all the battery cells 20 is accommodated in the box 10.
[0084] In some embodiments, the battery device 100 may further include a busbar, through which multiple battery cells 20 may be electrically connected to achieve series connection, parallel connection, or hybrid connection of multiple battery cells 20. The busbar may be a metal conductor, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc.
[0085] In some embodiments, please refer to Figure 3 , Figure 3 This is a schematic diagram of the exploded structure of a battery cell 20 in some embodiments of the present application. The battery cell 20 may include a housing 202 and an electrode assembly 203 , wherein the electrode assembly 203 is accommodated in the housing 202 .
[0086] In some embodiments, the housing 202 may include a shell 2021 and an end cap 2022, wherein the shell 2021 has an opening, and the end cap 2022 closes the opening of the shell 2021. The closing here means covering or closing, which may be sealed or unsealed.
[0087] The shell 2021 is a component for accommodating the electrode assembly 203. The shell 2021 may be a hollow structure with an opening formed at one end, or a hollow structure with openings formed at opposite ends. The shell 2021 may be in various shapes, such as a cylindrical shape, a rectangular parallelepiped shape, etc. The material of the shell 2021 may be various, such as copper, iron, aluminum, steel, aluminum alloy, etc. The electrode assembly 203 may be partially located in the shell 2021, or may be completely located in the shell 2021.
[0088] The end cap 2022 and the shell 2021 together define a receiving space for accommodating the electrode assembly 203 and other components. The end cap 2022 can be connected to the shell 2021 by welding, crimping, etc. to close the opening of the shell 2021. The shape of the end cap 2022 can be adapted to the shape of the shell 2021. For example, the shell 2021 is a rectangular parallelepiped structure, and the end cap 2022 is a rectangular plate structure adapted to the shell 2021. For another example, the shell 2021 is a cylindrical structure, and the end cap 2022 is a circular plate structure adapted to the shell 2021. The material of the end cap 2022 can also be a variety of materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The material of the end cap 2022 and the shell 2021 can be the same or different.
[0089] In the embodiment where the housing 2021 is opened at one end, one end cap 2022 may be provided. In the embodiment where the housing 2021 is opened at two opposite ends, two end caps 2022 may be provided, and the two end caps 2022 respectively close the two openings of the housing 2021, and the two end caps 2022 and the housing 2021 together define a receiving space.
[0090] In some embodiments, the battery cell 20 may further include an electrode terminal 201, which is disposed on the housing 202, and is used to electrically connect to the tab of the electrode assembly 203 to input or output the electrical energy of the battery cell 20. The electrode terminal 201 may be disposed on the shell 2021 of the housing 202, or on the end cover 2022 of the housing 202. Electrode terminals 201 of different polarities of a battery cell 20 may be disposed on the same side of the housing 202, or on different sides of the housing 202. The electrode terminal 201 and the tab may be directly connected, for example, the electrode terminal 201 and the tab are welded. The electrode terminal 201 and the tab may also be indirectly connected, for example, the electrode terminal 201 and the tab are indirectly connected through a current collecting member. The current collecting member may be a metal conductor, such as copper, iron, aluminum, steel, aluminum alloy, etc.
[0091] As an example, in Figure 3 In the illustrated embodiment, an opening is formed at one end of the shell 2021, and there is one end cap 2022 in the shell 202, and one end cap 2022 closes one opening of the shell 2021. Two electrode terminals 201 are provided on the end cap 2022, and the two electrode terminals 201 are respectively a positive electrode terminal 201 and a negative electrode terminal 201. A positive electrode tab and a negative electrode tab are formed at one end of the electrode assembly 203 facing the end cap 2022, and the positive electrode terminal 201 is electrically connected to the positive electrode tab, and the negative electrode terminal 201 is electrically connected to the negative electrode tab.
[0092] See also Figure 4-Figure 7 , Figure 4 A schematic diagram of the structure of a battery device 100 provided in some embodiments of the present application (a buffer 40 is provided between the frame 101 and the battery cell assembly 30); Figure 5 for Figure 4 A local enlarged view at point A; Figure 6 A schematic diagram of the structure of a battery device 100 provided in some embodiments of the present application (a buffer 40 is provided between adjacent battery cell assemblies 30); Figure 7 for Figure 6A partial enlarged view at B. An embodiment of the present application provides a battery device 100, including a frame 101, a battery cell assembly 30, a buffer 40 and a wiring harness 50. The frame 101 has an enclosed space 102, the battery cell assembly 30 is arranged in the enclosed space 102, the battery cell assembly 30 includes a plurality of battery cells 20, the buffer 40 is provided with a channel 401, the wiring harness 50 is electrically connected to the battery cell assembly 30, and the wiring harness 50 is passed through the channel 401. A buffer 40 is provided between the frame 101 and the battery cell assembly 30; and / or, the battery device 100 includes a plurality of battery cell assemblies 30, a plurality of battery cells 20 in each battery cell assembly 30 are arranged along a first direction X, a plurality of battery cell assemblies 30 are arranged along a second direction Y, a buffer 40 is provided between two adjacent battery cell assemblies 30, and the second direction Y is perpendicular to the first direction X.
[0093] The box body 10 may include a frame 101, and the frame 101 may include multiple side beams, such as the frame 101 may include four side beams, or five side beams, etc. The side beam is a beam body portion extending in one direction. Exemplarily, when the frame 101 includes four side beams, the four side beams can be connected end to end to form a frame 101 of a rectangular structure. Multiple side beams can be connected end to end to form an enclosed space 102, and such an enclosed space 102 can be formed with openings on opposite sides. The box body 10 may also include a first cover plate 103 and a second cover plate 104, and the first cover plate 103 and the second cover plate 104 are respectively located at the positions of the openings on both sides of the enclosed space 102, and the openings on both sides are respectively closed. The first cover plate 103 and the second cover plate 104 and the frame 101 together form a storage space for accommodating batteries. Multiple side beams may be integrally formed, or they may be manufactured in separate parts and connected to each other. The side beam and the first cover plate 103 may be integrally formed, and the side beam and the second cover plate 104 may also be integrally formed, or they may be manufactured in separate parts and connected to each other.
[0094] The frame 101 may include a first sub-frame and a second sub-frame. For example, the box 10 includes a first box 11 and a second box 12. The first sub-frame and the first cover plate 103 are connected to each other to form the first box 11, and the second sub-frame and the second cover plate 104 are connected to each other to form the second box 12. When the first box 11 and the second box 12 are buckled, the first sub-frame and the second sub-frame are arranged opposite to each other to form the frame 101. The first box 11 may include the first cover plate 103 and the first sub-frame, which are manufactured separately and connected to each other, or the first box 11 may be an integrally formed arrangement. Correspondingly, the second box 12 may include the second cover plate 104 and the second sub-frame, which are manufactured separately and connected to each other, or the second box 12 may be an integrally formed arrangement.
[0095] The battery cell assembly 30 may be entirely within the enclosed space 102 , or a portion of the battery cell assembly 30 may extend outside the enclosed space 102 through an opening.
[0096] The buffer 40 is a component used to achieve a buffering effect in the battery device 100. In some specific application scenarios, when the buffer 40 is provided between the frame 101 and the battery cell assembly 30, the buffer 40 can reduce the risk of rigid contact between the frame 101 and the battery cell assembly 30, such as the risk of the battery cell assembly 30 expanding and squeezing the frame 101, causing the frame 101 to deform, or the battery device 100 shaking, causing the battery cell assembly 30 and the frame 101 to collide with each other. In other specific application scenarios, when the battery device 100 includes multiple battery cell assemblies 30 and a buffer 40 is provided between adjacent battery cell assemblies 30, the buffer 40 can reduce the risk of rigid contact between adjacent battery cell assemblies 30, such as the risk of some of the battery cell assemblies 30 expanding and squeezing adjacent battery cell assemblies 30, or the risk of adjacent battery cell assemblies 30 colliding with each other. Taking the expansion of the battery cell assembly 30 as an example for further explanation, during the use of the battery device 100, the battery cell 20 may swell, and then the battery cell assembly 30 where the swelled battery cell 20 is located has a tendency to expand and gradually expands. When the battery cell assembly 30 expands, it will squeeze the frame 101 or the adjacent battery cell assembly 30, thereby making the battery device 100 unstable. The buffer member 40 is provided to absorb the expansion of the battery cell assembly 30 to improve the overall reliability of the battery device 100.
[0097] The buffer 40 may be provided only between the frame 101 and the battery cell assembly 30. The battery device 100 may also include a plurality of battery cell assemblies 30, the plurality of battery cell assemblies 30 are arranged along the second direction Y, and the buffer 40 is provided only between two adjacent battery cell assemblies 30, and the second direction Y is perpendicular to the first direction X. The buffer 40 may also be provided between the frame 101 and the battery cell assembly 30, and the buffer 40 may also be provided between two adjacent battery cell assemblies 30.
[0098] The wire harness 50 is electrically connected to the battery cell assembly 30 . The wire harness 50 may be directly connected to the battery cell 20 , or the wire harness 50 may be connected to other components of the battery cell assembly 30 except the battery cell 20 , for example, the wire harness 50 is connected to a busbar.
[0099] When a buffer 40 is provided between the frame 101 and the battery cell assembly 30, one buffer 40 may be provided, or multiple buffers 40 may be provided. For example, when the frame 101 includes multiple side beams, multiple buffers 40 may be provided between the multiple side beams and the battery cell assembly 30, respectively. One buffer 40 may be provided between a side beam and the battery cell assembly 30, or multiple buffers 40 may be provided. When multiple buffers 40 are provided, adjacent buffers 40 may be connected to each other, abut against each other, or spaced apart. When multiple buffers 40 are provided, a portion of the buffers 40 may be provided with a channel 401, or all of the buffers 40 may be provided with a channel 401.
[0100] When the battery device 100 includes multiple battery cell assemblies 30 , a buffer 40 may be provided between any adjacent battery cell assemblies 30 , and when multiple buffers 40 are provided, a portion of the buffers 40 may be provided with channels 401 , or all of the buffers 40 may be provided with channels 401 .
[0101] The channel 401 provided on the buffer 40 can be provided through the buffer 40. When the buffer 40 is provided through, the two through openings formed can be located on the same surface of the buffer 40 or on different surfaces of the buffer 40. When the two through openings are located on different surfaces, the two surfaces provided with the through openings can be arranged opposite to each other or adjacent to each other. In a specific application scenario, the channel 401 on the buffer 40 can be provided accordingly according to the arrangement path of the wiring harness 50.
[0102] The channel 401 provided on the buffer 40 may be a groove 401a provided on one side surface thereof, or the channel 401 may be provided inside thereof to form a through hole 401b, or the groove 401a and the through hole 401b may be provided simultaneously and connected to each other to form the channel 401 as a whole.
[0103] When the wire harness 50 is inserted into the channel 401 , the wire harness 50 may have an interference fit relationship or a clearance fit relationship with the inner wall of the channel 401 .
[0104] When a buffer 40 is provided between the frame 101 and the battery cell assembly 30, the battery cell assembly 30 and the frame 101 may cooperate to extrude the buffer 40, or the buffer 40 and the battery cell assembly 30, and / or the buffer 40 and the frame 101 may be spaced apart. When there are multiple battery cell assemblies 30 and a buffer 40 is provided between adjacent battery cell assemblies 30, the adjacent battery cell assemblies 30 may cooperate to extrude the buffer 40, or the buffer 40 and at least one of the adjacent battery cell assemblies 30 may be spaced apart.
[0105] In the above embodiment, by providing a buffer 40 between the frame 101 and the battery cell assembly 30, and / or providing a buffer 40 between adjacent battery cell assemblies 30 when the battery device 100 includes a plurality of battery cell assemblies 30, a buffer effect between the battery cell assembly 30 and the frame 101 and / or a buffer effect between adjacent battery cell assemblies 30 can be achieved. According to the arrangement of the wire harness 50 in the battery device 100, a channel 401 is provided in the buffer 40, and the wire harness 50 is passed through the channel 401. The wire harness 50 can be fixed by the buffer 40. While fixing the wire harness 50, the space inside the battery device 100 can be saved, thereby facilitating the improvement of the energy density of the battery device 100. In addition, by providing a channel for accommodating the wire harness 50 in the buffer 40, the generation of metal chips or burrs caused by providing the channel 401 on the beam of the box body 10 can be reduced, thereby reducing the risk of scratching the wire harness 50 and the battery cell 20, thereby achieving the purpose of improving the reliability of the battery device 100.
[0106] In some embodiments, see Figure 8 and Fig. 9 , Figure 8 A schematic diagram of the structure of a buffer member 40 provided in some embodiments of the present application (the channel 401 is a groove 401a); Fig. 9 A schematic diagram of the structure of the buffer 40 provided in some embodiments of the present application (the channel 401 is a through hole 401b). The channel 401 runs through the two opposite ends of the buffer 40. With this arrangement, it is easy to process and form the channel 401 on the buffer 40. For example, when the buffer 40 is a rectangular parallelepiped as a whole, the channel 401 can run through the surfaces of the two opposite sides of the buffer 40. Compared with setting a through hole on the adjacent surface to obtain the channel 401, the processing is easier, the processing efficiency is higher, and the processing cost is lower.
[0107] In some embodiments, still refer to Figure 8 The buffer 40 has a first surface 402 and a second surface 403 that are arranged opposite to each other, and the channel 401 runs through the first surface 402 and the second surface 403. The buffer 40 also has a third surface 404, the third surface 404 connects the first surface 402 and the second surface 403, and the channel 401 is a groove 401a arranged on the third surface 404.
[0108] The buffer 40 can be in various shapes as long as it can support the first surface 402 and the second surface 403 that are relatively set. For example, the buffer 40 can be a cuboid, a cylinder, or a special-shaped structure with the first surface 402 and the second surface 403 that are relatively set.
[0109] In the above embodiment, the channel 401 passes through the first surface 402 and the second surface 403 that are relatively set on the buffer 40, and by setting the groove 401a to form the channel 401, it is convenient to form the channel 401 on the buffer 40, thereby achieving the purpose of easier processing, higher processing efficiency, and lower processing cost. In addition, setting the groove 401a to form the channel 401 can make the wiring harness 50 better pass through the channel 401, so as to improve the assembly convenience of the wiring harness 50.
[0110] In some embodiments, please refer to Fig. 9 The buffer member 40 has a first surface 402 and a second surface 403 that are oppositely disposed, and the channel 401 is a through hole 401 b that penetrates the first surface 402 and the second surface 403 .
[0111] In the above embodiment, the channel 401 passes through the first surface 402 and the second surface 403 that are relatively set on the buffer 40, and the channel 401 is formed by setting the through hole 401b. While facilitating the molding of the channel 401 on the buffer 40, the channel 401 can also better cover the wiring harness 50, thereby improving the protection performance of the wiring harness 50.
[0112] In some embodiments, see Fig.10 and Fig.11 , Fig.10 A schematic diagram of the structure of a battery device 100 provided in some embodiments of the present application (showing a first buffer portion 405 and a second buffer portion 406 in abutment with each other); Fig.11 A schematic diagram of the structure of a buffer 40 provided in some embodiments of the present application (showing a first buffer portion 405 and a second buffer portion 406 separated from each other). The buffer 40 includes a first buffer portion 405 and a second buffer portion 406 that are separately arranged and abut against each other, the first buffer portion 405 has a first groove 4051 on one side facing the second buffer portion 406, and the second buffer portion 406 has a second groove 4061 on one side facing the first buffer portion 405, and the first groove 4051 and the second groove 4061 together constitute a through hole 401b.
[0113] In the above embodiment, a first groove 4051 and a second groove 4061 are provided on the first buffer portion 405 and the second buffer portion 406 which are separately provided and abut against each other, and the first groove 4051 and the second groove 4061 together form a through hole 401b. When arranging the wiring harness 50, the wiring harness 50 can be first arranged in the first groove 4051 or the second groove 4061, and then the second buffer portion 406 or the first buffer portion 405 is covered, which can improve the assembly convenience of the wiring harness 50. In addition, the first buffer portion 405 and the second buffer portion 406 abut against each other, and the through hole 401b formed by the first groove 4051 and the second groove 4061 can better wrap the wiring harness 50, thereby improving the protection performance of the wiring harness 50.
[0114] In some embodiments, still refer to Fig.10 The enclosed space 102 has a first opening (not shown in the figure), and the battery device 100 further includes a first cover plate 103, which is connected to the frame 101 and closes the first opening. The first cover plate 103 carries the battery cell assembly 30 along the third direction Z. Along the third direction Z, the first buffer portion 405 and the second buffer portion 406 are arranged opposite to each other.
[0115] In the above embodiment, the first buffer portion 405 and the second buffer portion 406 are arranged relatively along the third direction Z, which can facilitate the arrangement of the wiring harness 50. In a specific example, when the buffer 40 and the wiring harness 50 are arranged, the second buffer portion 406 can be placed between the frame 101 and the battery cell assembly 30, or the second buffer portion 406 can be placed in an adjacent battery cell assembly 30, and then the wiring harness 50 can be placed in the second groove 4061 of the second buffer portion 406, and then the first buffer portion 405 with the surface of the first groove 4051 is placed toward the second buffer portion 406, so that the first groove 4051 and the second groove 4061 form a through hole 401b, and the wiring harness 50 is placed in the formed through hole 401b.
[0116] In some other embodiments, the first buffer portion 405 and the second buffer portion 406 may also be arranged along the second direction Y opposite to each other.
[0117] In some embodiments, see Fig.12 , Fig.12A schematic diagram of the structure of the battery device 100 provided for some embodiments of the present application (showing the first abutment surface 407 and the second abutment surface 408). The buffer 40 also has a third surface 404, and the third surface 404 connects the first surface 402 and the second surface 403 (not shown in the figure); the buffer 40 includes a first abutment surface 407 and a second abutment surface 408 abutting against each other, and the first abutment surface 407 and the second abutment surface 408 are both located between the through hole 401b and the third surface 404, the first abutment surface 407 connects the hole wall surface of the through hole 401b and the third surface 404, and the second abutment surface 408 connects the hole wall surface of the through hole 401b and the third surface 404.
[0118] In the above embodiment, the first abutting surface 407 and the second abutting surface 408 that abut against each other can be separated from each other. When the battery device 100 is in use, the first abutting surface 407 and the second abutting surface 408 abut against each other. When assembling the wiring harness 50 or maintaining the battery device 100, the first abutting surface 407 and the second abutting surface 408 can be separated from each other to form an opening, so that the wiring harness 50 can be placed or taken out through the formed opening, so as to facilitate the assembly and disassembly of the wiring harness 50.
[0119] In some embodiments, see Fig.13 , Fig.13 A schematic diagram of the structure of a battery device 100 provided in some embodiments of the present application (showing that the third surface 404 faces away from the battery cell assembly 30 ). A buffer 40 is provided between the frame 101 and the battery cell assembly 30 , and the third surface 404 faces the battery cell assembly 30 , or the third surface 404 faces away from the battery cell assembly 30 .
[0120] In some examples, when the channel 401 is a through hole 401b that passes through the first surface 402 and the second surface 403, the buffer member 40 includes a first abutting surface 407 and a second abutting surface 408 that abut against each other, and the first abutting surface 407 and the second abutting surface 408 are both located between the through hole 401b and the third surface 404. The first abutting surface 407 and the second abutting surface 408 are both connected to the hole wall surface of the through hole 401b and the third surface 404, so that when the first abutting surface 407 and the second abutting surface 408 are separated, the opening is facing the battery cell assembly 30, or away from the battery cell assembly 30, so that the wiring harness 50 is conveniently arranged along the opening. In a specific application scenario, the third surface 404 can be selectively set to face the battery cell assembly 30, or away from the battery cell assembly 30, according to whether the wiring harness 50 is closer to the battery cell assembly 30, or closer to the frame 101.
[0121] In other examples, when the channel 401 is a groove 401a disposed on the third surface 404, the third surface 404 can be selectively disposed toward the battery cell assembly 30 or away from the battery cell assembly 30 according to whether the wiring harness 50 is closer to the battery cell assembly 30 or closer to the frame 101.
[0122] In the above embodiment, when the buffer member 40 is disposed between the frame 101 and the battery cell assembly 30 , the third surface 404 is disposed toward the battery cell assembly 30 or away from the battery cell assembly 30 , which can facilitate the arrangement of the wire harness 50 .
[0123] In some embodiments, see Fig.14 , Fig.14 The schematic diagram of the structure of the battery device 100 provided in some other embodiments of the present application (showing that the third surface 404 faces the battery cell assembly 30 ). A buffer 40 is arranged between two adjacent battery cell assemblies 30 , and the third surface 404 faces any one of the two adjacent battery cell assemblies 30 .
[0124] In some examples, when the channel 401 is a through hole 401b that passes through the first surface 402 and the second surface 403, the buffer member 40 includes a first abutting surface 407 and a second abutting surface 408 that abut against each other, and the first abutting surface 407 and the second abutting surface 408 are both located between the through hole 401b and the third surface 404. The first abutting surface 407 and the second abutting surface 408 are both connected to the hole wall surface of the through hole 401b and the third surface 404, so that when the first abutting surface 407 and the second abutting surface 408 are separated, the opening is directed toward any one of the adjacent battery cell assemblies 30, so that the wiring harness 50 is conveniently arranged along the opening. In a specific application scenario, the third surface 404 can be selectively set to face the battery cell assembly 30 according to which battery cell assembly 30 the wiring harness 50 is closer to.
[0125] In other examples, when the channel 401 is a groove 401 a disposed on the third surface 404 , the third surface 404 may be selectively disposed toward the battery cell assembly 30 according to which battery cell assembly 30 the wiring harness 50 is closer to.
[0126] In the above embodiment, when the buffer member 40 is disposed between two adjacent battery cell assemblies 30 , the third surface 404 is disposed toward any one of the two adjacent battery cell assemblies 30 to facilitate the arrangement of the wire harness 50 .
[0127] In some embodiments, see Fig.15 , Fig.15A schematic diagram of the structure of a battery device 100 provided in some embodiments of the present application (showing that the third surface 404 faces the first cover plate 103). The enclosed space 102 has a first opening, and the battery device 100 further includes a first cover plate 103, which is connected to the frame 101 and closes the first opening, and the third surface 404 faces the first cover plate 103.
[0128] The battery device 100 may include a first cover plate 103 and a second cover plate 104, wherein the enclosed space 102 formed by the frame 101 may have two opposite openings, namely a first opening and a second opening, the first cover plate 103 is connected to the frame 101 and closes the first opening, and the second cover plate 104 is connected to the frame 101 and closes the second opening, wherein one of the cover plates is the top plate of the battery device 100, and the other is the bottom plate of the battery device 100.
[0129] In some examples, when the channel 401 is a through hole 401b that passes through the first surface 402 and the second surface 403, the buffer 40 includes a first abutting surface 407 and a second abutting surface 408 that abut against each other, and the first abutting surface 407 and the second abutting surface 408 are both located between the through hole 401b and the third surface 404. The first abutting surface 407 and the second abutting surface 408 are both connected to the hole wall surface of the through hole 401b and the third surface 404, so that when the first abutting surface 407 and the second abutting surface 408 are separated, the opening faces the first cover plate 103, which can reduce the impact of the frame 101 and the battery cell assembly 30 cooperating to squeeze the buffer 40, or when the adjacent battery cell assembly 30 cooperates to squeeze the buffer 40, on the channel 401, thereby reducing the impact on the wiring harness 50, so as to improve the reliability of the battery device 100.
[0130] In other examples, when the channel 401 is a groove 401a arranged on the third surface 404, it can also reduce the direct extrusion of the wiring harness 50 when the frame 101 and the battery cell assembly 30 cooperate to squeeze the buffer 40, or when adjacent battery cell assemblies 30 cooperate to squeeze the buffer 40, thereby reducing the impact on the wiring harness 50 and improving the reliability of the battery device 100.
[0131] In the above embodiment, by setting the third surface 404 toward the first cover plate 103, the impact of the battery cell assembly 30 and the frame 101 squeezing the buffer 40, or the adjacent battery cell assembly 30 squeezing the buffer 40, on the wiring harness 50 can be reduced, thereby improving the reliability of the battery device 100.
[0132] In some embodiments, the wire harness 50 is interference fit with the inner wall of the channel 401. With this arrangement, the wire harness 50 can be pressed against the inner wall of the channel 401, and the wire harness 50 can be better fixed to reduce the impact of the shaking of the wire harness 50 on other components around it, and can also reduce the damage to the wire harness 50, thereby improving the reliability of the battery device 100.
[0133] In some embodiments, a buffer 40 is disposed between the frame 101 and the battery cell assembly 30, and the battery cell assembly 30 and the frame 101 cooperate to squeeze the buffer 40. With this arrangement, the buffer 40 can be always in a squeezed state, so that the buffer 40 can better absorb the expansion of the battery cell assembly 30, thereby achieving a better buffering effect.
[0134] In some embodiments, the buffer 40 is bonded to the frame 101. This arrangement allows the buffer 40 to be better fixed between the frame 101 and the battery cell assembly 30, thereby reducing the impact of the movement of the buffer 40 on the battery device 100.
[0135] In some embodiments, a buffer 40 is disposed between two adjacent battery cell assemblies 30, and the two adjacent battery cell assemblies 30 cooperate to squeeze the buffer 40. With this arrangement, the buffer 40 can be always in a squeezed state, so that the buffer 40 can better absorb the expansion of the battery cell assembly 30, thereby achieving a better buffering effect.
[0136] In some embodiments, the buffer 40 is adhesively connected to the battery cell assembly 30 . This arrangement can better fix the buffer 40 between two adjacent battery cell assemblies 30 to reduce the impact of the movement of the buffer 40 on the battery device 100 .
[0137] In some embodiments, the buffer 40 is foam. With this configuration, the foam is used as the buffer 40, which can not only play a buffering role, but also play an insulating role, a gap filling role, a role of supporting and fixing the battery cell assembly 30, and a heat preservation role, so that the battery device 100 can have better reliability.
[0138] In some embodiments of the present application, a battery device 100 is provided, including a frame 101, a battery cell assembly 30, a buffer 40 and a wire harness 50. The frame 101 has an enclosed space 102, the battery cell assembly 30 is arranged in the enclosed space 102, the battery cell assembly 30 includes a plurality of battery cells 20, the buffer 40 is provided with a channel 401, the wire harness 50 is electrically connected to the battery cell assembly 30, and the wire harness 50 is passed through the channel 401, the buffer 40 is provided between the frame 101 and the battery cell assembly 30, and / or the battery device 100 includes a plurality of battery cell assemblies 30, a plurality of battery cells 20 in each battery cell assembly 30 are arranged along a first direction X, a plurality of battery cell assemblies 30 are arranged along a second direction Y, a buffer 40 is provided between two adjacent battery cell assemblies 30, and the second direction Y is perpendicular to the first direction X. The channel 401 runs through opposite ends of the buffer 40. The wire harness 50 is interference fit with the inner wall of the channel 401. When a buffer 40 is provided between the frame 101 and the battery cell assembly 30, the battery cell assembly 30 cooperates with the frame 101 to squeeze the buffer 40, and the buffer 40 is bonded to the frame 101. There are multiple battery cell assemblies 30. When a buffer 40 is provided between two adjacent battery cell assemblies 30, the two adjacent battery cell assemblies 30 cooperate to squeeze the buffer 40, and the battery cell assembly 30 and the buffer 40 are bonded to each other. The buffer 40 is foam.
[0139] The buffer member 40 may have a first surface 402 and a second surface 403 that are oppositely disposed, the channel 401 runs through the first surface 402 and the second surface 403, the buffer member 40 further has a third surface 404, the third surface 404 connects the first surface 402 and the second surface 403, and the channel 401 is a groove 401a disposed on the third surface 404. The third surface 404 may face the battery cell assembly 30 or face away from the battery cell assembly 30.
[0140] The buffer 40 may have a first surface 402 and a second surface 403 that are arranged opposite to each other, and the channel 401 is a through hole 401b that passes through the first surface 402 and the second surface 403. The buffer 40 may include a first buffer portion 405 and a second buffer portion 406 that are arranged separately and abut against each other, the first buffer portion 405 has a first groove 4051 on the side facing the second buffer portion 406, and the second buffer portion 406 has a second groove 4061 on the side facing the first buffer portion 405, and the first groove 4051 and the second groove 4061 together constitute the through hole 401b. The enclosed space 102 has a first opening, and the battery device 100 also includes a first cover plate 103, the first cover plate 103 is connected to the frame 101 and closes the first opening, the first cover plate 103 carries the battery cell assembly 30 along the third direction Z, and along the third direction Z, the first buffer portion 405 and the second buffer portion 406 are arranged opposite to each other. The buffer member 40 may further have a third surface 404, the third surface 404 connects the first surface 402 and the second surface 403, and the buffer member 40 includes a first abutting surface 407 and a second abutting surface 408 abutting against each other, the first abutting surface 407 connects the hole wall surface of the through hole 401b and the third surface 404, and the second abutting surface 408 connects the hole wall surface of the through hole 401b and the third surface 404. The third surface 404 faces the first cover plate 103.
[0141] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.
[0142] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A battery device, characterized in that: include: A frame, with enclosed space; A battery cell assembly is arranged in the enclosed space, and the battery cell assembly includes a plurality of battery cells; A buffer member provided with a channel; A wiring harness, electrically connected to the battery monomer assembly, the wiring harness passing through the channel; The buffer is arranged between the frame and the battery cell assembly; and / or the battery device includes a plurality of the battery cell assemblies, a plurality of the battery cells in each of the battery cell assemblies are arranged along a first direction, a plurality of the battery cell assemblies are arranged along a second direction, the buffer is arranged between two adjacent battery cell assemblies, and the second direction is perpendicular to the first direction.
2. The battery device according to claim 1, characterized in that: The channel passes through two opposite ends of the buffer.
3. The battery device according to claim 2, characterized in that: The buffer member has a first surface and a second surface that are arranged opposite to each other, the channel runs through the first surface and the second surface, the buffer member also has a third surface that connects the first surface and the second surface, and the channel is a groove arranged on the third surface.
4. The battery device according to claim 2, characterized in that: The buffer member has a first surface and a second surface that are oppositely disposed, and the channel is a through hole that penetrates the first surface and the second surface.
5. The battery device according to claim 4, characterized in that: The buffer member includes a first buffer portion and a second buffer portion which are separately arranged and abut against each other, the first buffer portion has a first groove on a side facing the second buffer portion, the second buffer portion has a second groove on a side facing the first buffer portion, and the first groove and the second groove together constitute the through hole.
6. The battery device according to claim 5, characterized in that: The enclosed space has a first opening, and the battery device also includes a first cover plate, which is connected to the frame and closes the first opening. The first cover plate supports the battery cell assembly along a third direction, and the first buffer portion and the second buffer portion are arranged opposite to each other along the third direction.
7. The battery device according to claim 4, characterized in that: The buffer member further has a third surface, and the third surface connects the first surface and the second surface; The buffer member includes a first abutting surface and a second abutting surface abutting against each other, wherein the first abutting surface and the second abutting surface are both located between the through hole and the third surface, the first abutting surface connects the hole wall surface of the through hole and the third surface, and the second abutting surface connects the hole wall surface of the through hole and the third surface.
8. The battery device according to claim 3 or 7, characterized in that: The buffer is arranged between the frame and the battery cell assembly, and the third surface faces the battery cell assembly, or the third surface faces away from the battery cell assembly.
9. The battery device according to claim 3 or 7, characterized in that: The buffer is disposed between two adjacent battery cell assemblies, and the third surface faces any one of the two adjacent battery cell assemblies.
10. The battery device according to claim 3 or 7, characterized in that: The enclosed space has a first opening, and the battery device further includes a first cover plate, which is connected to the frame and closes the first opening, and the third surface faces the first cover plate.
11. The battery device according to any one of claims 1 to 7, characterized in that: The wiring harness is interference fit with the inner wall of the channel.
12. The battery device according to any one of claims 1 to 7, characterized in that: The buffer is arranged between the frame and the battery cell assembly, and the battery cell assembly cooperates with the frame to squeeze the buffer.
13. The battery device according to claim 12, characterized in that: The buffer component is bonded to the frame.
14. The battery device according to any one of claims 1 to 7, characterized in that: The buffer is arranged between two adjacent battery cell assemblies, and the two adjacent battery cell assemblies cooperate to squeeze the buffer.
15. The battery device according to claim 14, characterized in that: The buffer is bonded to the battery cell assembly.
16. The battery device according to any one of claims 1 to 7, characterized in that: The buffer component is foam.
17. An electrical device, characterized in that: A battery device comprising any one of claims 1-16.