Battery device, energy storage device and power utilization device

Abstract

The utility model discloses a battery device, an energy storage device and a power utilization device, the battery device comprises: a box body, the box body comprises a first box body and a second box body, the first box body and the second box body are buckled in a first direction to define an accommodating cavity; the fixing piece is fixed with the second box body and is positioned in the accommodating cavity; the first connecting piece is arranged in the containing cavity and fixed to one of the fixing piece and the first box body, the first connecting piece is configured to be suitable for generating first acting force in the first direction, and the first acting force is used for enabling the other one of the fixing piece and the first box body to be connected with the first connecting piece in an abutting mode. According to the battery device disclosed by the utility model, the probability of deformation of the box body can be well reduced, the abnormal sound generated by the battery device is reduced, the battery device has good NVH (Noise Vibration and Harshness) performance, and the use experience of a user is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a battery device, energy storage device and electric device. BACKGROUND

[0002] In the process of vehicle driving, the box of the battery device installed in the vehicle deforms, for example, when the vehicle drives on a bumpy road, the box deforms outward with the shaking of the vehicle, the box produces abnormal noise when deforming, the deformed box may touch other structures of the vehicle, further increasing the abnormal noise and causing the wear of the box and the vehicle structure, reducing the NVH (Noise, Vibration, and Harshness) performance of the battery device and the user experience. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a battery device, which can fix the box well, reduce the probability of the box deforming outward, and thus reduce the probability of the battery device producing abnormal noise, improve the NVH performance of the battery device, and improve the user experience.

[0004] The utility model further provides an energy storage device with the battery device.

[0005] The utility model further provides an electric device with the battery device or the energy storage device.

[0006] According to the battery device of the utility model, the first connecting piece is arranged in the accommodating cavity and is adapted to exert the first force to connect the first box and the second box in the first direction through the first connecting piece, so that the first force can well resist the deformation of the end surface structure of the first box and the second box in the first direction, thereby reducing the probability of the box deforming, reducing the abnormal noise produced by the battery device, improving the NVH performance of the battery device, and improving the user experience.

[0007] According to the battery device of the utility model, the first connecting piece is arranged in the accommodating cavity and is adapted to exert the first force to connect the first box and the second box in the first direction through the first connecting piece, so that the first force can well resist the deformation of the end surface structure of the first box and the second box in the first direction, thereby reducing the probability of the box deforming, reducing the abnormal noise produced by the battery device, improving the NVH performance of the battery device, and improving the user experience.

[0008] In some embodiments of the utility model, the first connecting piece includes: a coil and a core rod, the core rod extends along the first direction and is installed on the fixing piece, and the coil is wound on the core rod, and two ends of the coil are adapted to be connected with a power supply.

[0009] In the embodiment, the first connecting piece includes a coil and a core rod, the coil is wound on the core rod and connected with a power supply, and the structure is simple, so that the first connecting piece can attract the first box body through the generated magnetic force, the fixing is convenient and stable, compared with the punching connection mode, the good air tightness in the containing cavity can be maintained, and when the box body is disassembled, the first connecting piece only needs to be disconnected from the power supply to remove the first acting force on the first box body, so that the box body is more convenient and easy to disassemble.

[0010] In an embodiment of the utility model, an end face of the core rod towards the first box body is attached to the inner surface of the first box body.

[0011] In the embodiment, the end face of the core rod towards the first box body is attached to the inner surface of the first box body, so that the core rod and the inner surface of the first box body are always in a stable and reliable abutting connection state, so that when the first connecting piece generates the first acting force, the structure of the first box body is more stable, so that the first connecting piece can operate well to reduce the generation of abnormal sound, and the first connecting piece can well meet the use needs.

[0012] In an embodiment of the utility model, the number of the first connecting pieces is one or more, when the number of the first connecting pieces is more, the plurality of first connecting pieces are arranged at intervals in the second direction and / or the third direction, and the second direction intersects with the third direction and the first direction two by two.

[0013] In the embodiment, a plurality of first connecting pieces are arranged at intervals in the second direction and / or the third direction, the structure is simple and convenient to arrange, and the plurality of first connecting pieces can make the inner surface of the first box body in the first direction be more stably supported and abutted, so that the plurality of first connecting pieces can more stably and reliably resist the deformation of the first box body, and the probability of abnormal sound of the box body is further reduced, so that the battery device can have better NVH performance, and the user's use experience is more comfortable.

[0014] In an embodiment of the utility model, the coils of the plurality of first connecting pieces are connected in series, in parallel or in mixed connection.

[0015] In the embodiment, the coils of the plurality of first connecting pieces are connected in series, in parallel or in mixed connection, the structure is simple, the connection mode of the plurality of first connecting pieces can be flexibly adjusted according to needs when assembling and wiring, and the plurality of first connecting pieces can work better.

[0016] In one embodiment of the utility model, the battery device further includes a switch, and the switch is connected in series with the coil.

[0017] In the embodiment, the battery device is provided with the switch, so that the battery device can conveniently and flexibly exert or remove the first force according to needs to control the running state of the first connecting member, the structure is simple, the use is convenient, the energy consumption of the continuous running of the first connecting member can be reduced to a certain extent, and the running cost of the battery device is reduced.

[0018] In one embodiment of the utility model, the battery device further includes a battery monomer assembly, the battery monomer assembly is arranged in the accommodating cavity, and the battery monomer assembly includes a plurality of battery monomers.

[0019] In the embodiment, at least part of the plurality of battery monomers is arranged to supply power to the coil, the structure is simple, and the first connecting member is convenient and easy to assemble when being connected to power.

[0020] In some embodiments of the utility model, the fixing member is a cross beam, and the cross beam is arranged in the accommodating cavity and fixedly connected with the second box body.

[0021] In the embodiment, the fixing member is the cross beam, the structure is simple, the arrangement is reasonable, the core rod can be stably and reliably fixed to the second box body through the fixing member, and the first connecting member is convenient and easy to arrange when being assembled in the accommodating cavity.

[0022] In one embodiment of the utility model, the cross beam extends along the second direction and the number of cross beams is plural, and the plural cross beams are arranged at intervals in the third direction.

[0023] In the embodiment, the plural cross beams are arranged at intervals in the third direction, and the cross beam extends along the second direction, so that the structure is simple, the assembly support requirement of the battery device can be well met, and the first connecting member is convenient to install and arrange.

[0024] In some embodiments of the utility model, the second box body includes a frame and a bottom plate, the frame extends along the circumference of the box body, the frame and the bottom plate cooperatively define the accommodating cavity, and the circumferential edge of the first box body is fastened to the frame.

[0025] In the embodiment, the circumferential edge of the first box body is fastened to the frame, so that the structure is simple, the fixation is firm, the disassembly is convenient, and the assembly requirement of the battery device can be well met.

[0026] In some embodiments of this utility model, the second housing includes a frame and a base plate. The frame extends circumferentially along the housing and the base plate cooperate to define the receiving cavity. The battery device further includes a plurality of second connectors. The plurality of second connectors are disposed around the periphery of the frame and spaced apart circumferentially along the frame. The first housing and the frame are fixedly connected by the plurality of second connectors. The second connectors have the same structure as the first connectors.

[0027] In this embodiment, a second connector is provided to fix the first box and the frame. The second connector has the same structure as the first connector, which makes it easier to disassemble and assemble the box and can well meet the fixing needs of the box.

[0028] The energy storage device according to the second aspect of the present invention includes a battery device according to the first aspect of the present invention, the battery device being used to store or provide electrical energy.

[0029] According to the energy storage device of this utility model, by setting the battery device of the first aspect mentioned above, and by setting the first connector, the first connector is set in the receiving cavity and is adapted to apply a first force to connect the first box and the second box in the first direction through the first connector. This allows the first force to effectively resist deformation of the end face structure of the first box and the second box in the first direction, thereby effectively reducing the probability of box deformation, reducing abnormal noise generated by the battery device, giving the battery device good NVH performance, and improving the user experience.

[0030] An electrical device according to a third aspect of the present invention includes a battery device according to a first aspect of the present invention or an energy storage device according to a second aspect of the present invention, wherein the energy storage device is used to store or provide electrical energy.

[0031] According to the present invention, the electrical device, by setting the battery device of the first aspect or the energy storage device of the second aspect, and by setting the first connector, which is disposed in the receiving cavity and adapted to apply a first force to connect the first housing and the second housing in the first direction, can effectively resist the deformation of the end face structure of the first housing and the second housing in the first direction, thereby effectively reducing the probability of housing deformation, reducing the abnormal noise generated by the battery device, giving the battery device good NVH performance, and improving the user experience.

[0032] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] Figure 1 is a schematic view of an electrical device according to an embodiment of the present application;

[0034] Figure 2 is a schematic view of a battery device according to an embodiment of the present application;

[0035] Figure 3 is a schematic view of a second box and a first connecting member and a fixing member according to an embodiment of the present application;

[0036] Figure 4 is a schematic view of a section of the battery device at the first connecting member according to an embodiment of the present application;

[0037] Figure 5 is a schematic view of a first connecting member according to an embodiment of the present application.

[0038] Reference signs:

[0039] 10, battery device; 101, accommodating cavity

[0040] 11, box; 111, first box; 112, second box; 1121, frame; 1122, bottom plate

[0041] 12, fixing member

[0042] 13, first connecting member; 131, coil; 132, core rod

[0043] 20, motor; 30, controller

[0044] 100, electrical device DETAILED DESCRIPTION

[0045] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two, unless otherwise explicitly specified and limited.

[0048] In this paper, "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0050] In the description of the embodiments of the present application, the term "a plurality of" means more than two (including two).

[0051] In the description of the embodiments of the present application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0052] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing. Among the power batteries used at present, the proportion of lithium ion battery is also increasing.

[0054] In the battery device, the overall size of the battery device is large, and the box body of the battery device often has a large end face structure. The box body is usually assembled and fixed in the circumferential direction, and the middle position is generally supported by the structure inside the box body, such as beam structure. After the battery device is assembled into the vehicle, when the vehicle is in a relatively harsh driving condition, the end face structure of the box body will deform greatly. When the end face structure deforms towards the inside of the box body, the structure inside the box body can play a good supporting role to inhibit or resist the further deformation of the end face structure. When the end face structure deforms towards the outside, the deformed end face structure lacks limiting effect, so that the end face structure deforms outward and produces abnormal sound. Especially when the deformation is large, the end face structure will touch the external structure, for example, when the battery device is installed on the chassis of the vehicle, the end face structure of the box body will touch the chassis of the vehicle and produce abnormal sound, and the structure of the chassis and the box body will be worn out, so that the NVH performance of the battery device is poor, and the user's experience is poor.

[0055] Based on the above consideration, the embodiment discloses a battery device. By setting the first connecting piece, the first connecting piece generates a first acting force for abutting and connecting the first box body and the second box body, so as to resist the deformation of the box body outward, thereby reducing the probability of abnormal sound of the battery device, making the battery device have good NVH performance, and improving the user's experience.

[0056] The battery device according to the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel or in a hybrid manner through a busbar component. The battery cell assembly is usually formed by arranging a plurality of battery cells. For example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module, and the battery module can be formed by bundling a plurality of battery cells with a cable tie. The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0057] The following embodiments are described by taking a vehicle as an example for convenience of description. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The vehicle is internally provided with a battery device, which can be arranged at the bottom, the head or the tail of the vehicle. The battery device can be used for power supply of the vehicle, for example, the battery device can be used as an operating power source of the vehicle. The vehicle can further include a controller and a motor, and the controller is used to control the battery device to supply power to the motor, for example, for power demand of starting, navigation and driving of the vehicle.

[0058] In some embodiments of the present application, the battery device can not only be used as an operating power source of the vehicle, but also be used as a driving power source of the vehicle, to replace or partially replace fuel or natural gas to provide driving power for the vehicle.

[0059] The following embodiments are described by taking a vehicle as an example for convenience of description. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The vehicle is internally provided with a battery device, which can be arranged at the bottom, the head or the tail of the vehicle. The battery device can be used for power supply of the vehicle, for example, the battery device can be used as an operating power source of the vehicle. The vehicle can further include a controller and a motor, and the controller is used to control the battery device to supply power to the motor, for example, for power demand of starting, navigation and driving of the vehicle. Figures 1-5 The battery device 10 according to the first aspect of the present application is described. Figure 1 is a schematic view of an electric device 100 according to an embodiment of the present application; Figure 2 is a schematic view of a battery device 10 according to an embodiment of the present application; Figure 3 is a schematic view of a second box body 112 and a first connecting piece 13 and a fixing piece 12 according to an embodiment of the present application; Figure 4 is a schematic view of a battery device 10 according to an embodiment of the present application, which is a partial enlarged view of a section of the battery device 10 at the first connecting piece 13; Figure 5 is a schematic view of a first connecting piece 13 according to an embodiment of the present application.

[0060] As shown in FIG. 1, the battery device 10 according to the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel or in a hybrid manner through a busbar component. The battery cell assembly is usually formed by arranging a plurality of battery cells. For example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module, and the battery module can be formed by bundling a plurality of battery cells with a cable tie. The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. Figures 1-5As shown, the battery device 10 according to the first aspect of the utility model, comprising: box 11, fixed part 12 and first connecting piece 13. Box 11 includes first box 111 and second box 112, first box 111 and second box 112 are buckled in the first direction (such as Figure 2 The up and down direction) to define the containing cavity 101;Fixed part 12 is fixed with second box 112 and is located in containing cavity 101;First connecting piece 13 is arranged in containing cavity 101, and is fixed on one of fixed part 12 and first box 111, and first connecting piece 13 is configured to be suitable for generating the first action along the first direction, and the first action is used to make the other of fixed part 12 and first box 111 and first connecting piece 13 abut connected.

[0061] In the embodiment, box 11 includes first box 111 and second box 112, and first box 111 and second box 112 are buckled in the first direction to define containing cavity 101, and the structural form of first box 111 and second box 112 can be set according to the need, for example, first box 111 can be a top cover, and second box 112 can have a slot, and first box 111 is located on one side of second box 112 in the first direction, and exemplarily, box 11 can be part of the chassis structure of the vehicle, for example, part of box 11 can be at least part of the floor of the vehicle.

[0062] Fixed part 12 is fixed with second box 112 and is located in containing cavity 101, and fixed part 12 can be a beam structure of second box 112, and fixed part 12 can also be other components fixed to second box 112 in battery device 10, for example, fixed part 12 can be a side plate structure or a busbar structure, etc., and first connecting piece 13 of the embodiment is configured to be suitable for generating the first action along the first direction, and the first action is used to make the other of fixed part 12 and first box 111 and first connecting piece 13 abut connected.

[0063] For example, first connecting piece 13 is fixed on fixed part 12, then first connecting piece 13 is fixed with second box 112, and the first action generated by first connecting piece 13 is used to abut and connect first box 111 and first connecting piece 13 in the first direction, and first connecting piece 13 is fixed on first box 111, then the first action generated by first connecting piece 13 is used to abut and connect fixed part 12 and first connecting piece 13, that is, second box 112 and first connecting piece 13 abut connected, that is, first box 111 and second box 112 are abut connected in the first direction through first connecting piece 13 under the action of the first action, so that first connecting piece 13 has the pulling effect of first box 111 along the first direction towards second box 112, and first connecting piece 13 has the pulling effect of second box 112 along the first direction towards first box 111.

[0064] The first connecting piece 13 in the embodiment is arranged in the accommodating cavity 101, the first connecting piece 13 generates the first action force in the first direction, the first action force can abut the first box body 111 against the second box body 112 and the first connecting piece 13, for example, the first action force can be a magnetic force, the first action force can also be suction force, the first action force can also be a pulling force and the like, which can meet the use and assembly requirements of the first connecting piece 13.

[0065] When the battery device 10 is installed in the vehicle, when the box body 11 is deformed towards the outside under the action of the vehicle bumping and shaking and the like, for example, the first box body 111 or the second box body 112 is deformed outwardly in the first direction, the first action force can resist the deformation force of the first box body 111 or the second box body 112, so that the first box body 111 and the second box body 112 can be kept in a stable structure state in the first direction, thereby effectively reducing the deformation degree and frequency of the box body 11, effectively weakening the abnormal sound generated by the deformation of the box body 11, reducing the probability of the abnormal sound generated by the box body 11, and reducing the probability of the contact between the box body 11 and the external structure, reducing the wear of the vehicle caused by the contact between the box body 11 and the external structure, thereby effectively improving the NVH performance of the battery device 10 and improving the user experience.

[0066] In the embodiment, the first connecting piece 13 is fixed in the accommodating cavity 101, so that the first connecting piece 13 can conveniently abut and connect the end face structure of the first box body 111 or the second box body 112 in the first direction and apply the first action force, the arrangement is reasonable, and the need for suppressing the deformation of the box body 11 can be met well. The end face structure refers to the part of the first box body 111 that is deformed in the first direction, that is, the part fixed by the first connecting piece 13. For example, when the first box body 111 is a top cover, the end face structure refers to the top cover structure. When the first box body 111 has a slotted structure, the end face structure refers to the structure of the groove bottom part of the first box body 111 in the first direction.

[0067] According to the battery device 10 in the embodiment of the utility model, the first connecting piece 13 is arranged in the accommodating cavity 101 and is suitable for applying the first action force to connect the first box body 111 and the second box body 112 in the first direction through the first connecting piece 13, so that the first action force can effectively resist the deformation of the end face structure of the first box body 111 and the second box body 112 in the first direction, thereby effectively reducing the probability of deformation of the box body 11, reducing the abnormal sound generated by the battery device 10, improving the NVH performance of the battery device 10, and improving the user experience.

[0068] In some embodiments of the utility model, for example, Figure 4 andFigure 5 As shown, the first connecting piece 13 can include a coil 131 and a core rod 132, the core rod 132 extends along the first direction and is installed on the fixing piece 12, and the coil 131 is wound on the core rod 132, and two ends of the coil 131 are adapted to be connected with a power supply.

[0069] In the embodiment, the first connecting piece 13 includes the coil 131 and the core rod 132, the coil 131 is wound on the core rod 132, the core rod 132 is a magnetic conducting piece, and the number of the coils 131 wound on the core rod 132 can be set according to requirements, for example, one coil 131 can be wound on the core rod 132, or a plurality of coils 131 can be wound on the core rod 132, the first connecting piece 13 in the embodiment adopts the structure of an electromagnet, two ends of the coil 131 are connected with the power supply, a magnetic field is generated at the coil 131 after the power supply is connected to the coil 131, the magnetic field is concentrated on the core rod 132 to form a larger magnetic force, and the first box body 111 is stably abutted against the first connecting piece 13 and the second box body 112 along the first direction under the attraction of the magnetic force, and the magnetic force is formed into the first acting force generated by the first connecting piece 13.

[0070] In the embodiment, the first connecting piece 13 includes the coil 131 and the core rod 132, the coil 131 is wound on the core rod 132 and is connected with the power supply, and the structure is simple, so that the first connecting piece 13 can attract and fix the first box body 111 through the generated magnetic force, the fixing is convenient and stable, compared with the punching connection mode, the good air tightness in the accommodating cavity 101 can be maintained, and when the box body 11 is disassembled, the first connecting piece 13 only needs to be disconnected from the power supply to remove the first acting force on the first box body 111, so that the disassembly of the box body 11 is more convenient and easy.

[0071] In an embodiment of the utility model, as shown in the figure, Figure 4 As shown, the end face of the core rod 132 towards the first box body 111 can be attached to the inner surface of the first box body 111.

[0072] In the embodiment, the end face of the core rod 132 towards the first box body 111 is attached to the inner surface of the first box body 111, after the battery device 10 is assembled, the inner surface of the first box body 111 is supported on the end face of the core rod 132, when the first box body 111 is deformed along the first direction, the core rod 132 can cooperate with the fixing piece 12 and the second box body 112 to well support and resist the deformation of the first box body 111, when the first box body 111 is deformed, the magnetic force formed at the core rod 132 stably attracts the inner surface of the first box body 111 to abut against the end face of the core rod 132.

[0073] It can be understood that when the first connecting piece 13 generates the first action force, the first box body 111 has a trend of displacement or deformation in the first direction under the action of the first action force, when there is a gap between the core rod 132 and the inner surface of the first box body 111, the inner surface of the first box body 111 will be abutted on the end surface of the core rod 132 under the attraction of the magnetic force, so that the structure of the first box body 111 at the core rod 132 is deformed by the first action force, thereby causing additional abnormal sound.

[0074] In the embodiment, the end surface of the core rod 132 facing the first box body 111 is arranged to be attached to the inner surface of the first box body 111, so that the core rod 132 and the inner surface of the first box body 111 are always in a stable and reliable abutting connection state, so that when the first connecting piece 13 generates the first action force, the structure of the first box body 111 is more stable, so that the first connecting piece 13 can operate well to reduce the generation of abnormal sound, and the first connecting piece 13 can well meet the use needs.

[0075] In an embodiment of the utility model, the core rod 132 can be a metal rod, and the diameter of the core rod 132 is less than or equal to 50 mm.

[0076] In the embodiment, the diameter of the core rod 132 is less than or equal to 50 mm, for example, the diameter of the core rod 132 can be 50 mm, 45 mm, 40 mm, 36 mm, 30 mm, 20 mm, 18 mm, etc.

[0077] In the embodiment, the diameter of the core rod 132 is less than or equal to 50 mm, which can make the core rod 132 have sufficient structural strength and end surface area, so that the core rod 132 can have a larger abutting surface with the inner surface of the first box body 111, so that the first box body 111 can be stably abutted and supported by the core rod 132.

[0078] In an embodiment of the utility model, as shown in Figure 3 The number of the first connecting piece 13 can be one or more, when the number of the first connecting piece 13 is more, the plurality of first connecting pieces 13 can be arranged at intervals in the second direction (such as the front-back direction shown in Figure 3 The third direction (such as the left-right direction shown in Figure 3 The second direction and the third direction and the first direction are intersected two by two.

[0079] The number of the first connecting pieces 13 in the embodiment is one or more, and the number of the first connecting pieces 13 can be reasonably set according to the needs, and the number of the first connecting pieces 13 can be one, two, three, four, five or the like, a plurality of first connecting pieces 13 can be arranged at intervals in the second direction, a plurality of first connecting pieces 13 can be arranged in the third direction, and a plurality of first connecting pieces 13 can be arranged at intervals in the first direction and the second direction.

[0080] The second direction intersects with the first direction and the third direction in the embodiment, which is intended to illustrate that the first direction and the second direction can be arranged perpendicularly or only intersected and arranged non-perpendicularly, the first direction and the third direction can be arranged perpendicularly or only intersected and arranged non-perpendicularly, and the second direction and the third direction can be arranged perpendicularly or only intersected and arranged non-perpendicularly, that is, arranged at an acute angle or an obtuse angle, for example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°, the first direction and the third direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°, and the second direction and the third direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0081] The plurality of first connecting pieces 13 are arranged at intervals, and the spacing between the two adjacent first connecting pieces 13 can be set according to the needs, and the spacing between the two adjacent first connecting pieces 13 can be kept the same or different to meet different arrangement and use needs.

[0082] The plurality of first connecting pieces 13 are arranged at intervals in the second direction and / or the third direction in the embodiment, which is simple in structure and convenient to arrange, and the plurality of first connecting pieces 13 can provide more stable support and abutment to the inner surface of the first box body 111 in the first direction, so that the plurality of first connecting pieces 13 can more stably and reliably resist the deformation of the first box body 111, thereby further reducing the probability of abnormal sound of the box body 11 and improving the NVH performance of the battery device 10, so that the user has a better use experience.

[0083] In an embodiment of the utility model, the coils 131 of the plurality of first connecting pieces 13 can be connected in series, in parallel or in mixed connection.

[0084] The coils 131 of the plurality of first connecting pieces 13 can be connected in series, in parallel or in mixed connection in the embodiment, for example, the coils 131 of the plurality of first connecting pieces 13 arranged at intervals in the second direction can be connected in series, or the coils 131 arranged at intervals in the third direction can be connected in series, or all the first connecting pieces 13 are connected in series, and under the condition that the power is turned on, the plurality of first connecting pieces 13 connected in series can simultaneously generate magnetic force to attract and fix the first box body 111.

[0085] The plurality of loops 131 of the first connecting pieces 13 arranged at intervals along the second direction can also be connected in parallel, the plurality of loops 131 of the first connecting pieces 13 arranged at intervals along the third direction can also be connected in parallel, or all the first connecting pieces 13 are connected in parallel, and the plurality of parallel first connecting pieces 13 can generate magnetic force respectively or simultaneously as needed under the condition that the power supply is turned on.

[0086] The plurality of first connecting pieces 13 can also be connected in series-parallel, that is, part of the first connecting pieces 13 are connected in series, and part of the first connecting pieces are connected in parallel.

[0087] In the embodiment, the loops 131 of the plurality of first connecting pieces 13 are arranged to be connected in series, in parallel or in series-parallel, the structure is simple, the connection mode of the plurality of first connecting pieces 13 can be flexibly adjusted as needed during assembly and wiring, and the plurality of first connecting pieces 13 can better cooperate.

[0088] In an embodiment of the utility model, the battery device 10 can further include a switch, and the switch is connected in series with the loop 131.

[0089] In the embodiment, the switch is arranged and connected in series with the loop 131, for example, the switch can be a relay, and the switch can be connected in series on a line connected with the power supply, when the first connecting piece 13 operates, the switch can be turned on and turned off as needed, when the switch is turned on, a magnetic field is generated in the first connecting piece 13, and when the switch is turned off, the magnetic field in the first connecting piece 13 disappears.

[0090] In the embodiment, the battery device 10 is provided with the switch, so that the battery device 10 can flexibly and conveniently exert or remove the first acting force as needed to control the operating state of the first connecting piece 13, the structure is simple, the use is convenient, the energy consumption of the continuous operation of the first connecting piece 13 can be reduced to a certain extent, and the operating cost of the battery device 10 is reduced.

[0091] In some embodiments of the utility model, the first connecting piece 13 can include a suction cup and an air pipe, the suction cup cooperates with the inner surface of the first box body 111 to form a suction cavity, the air pipe is connected with the suction cavity, and the air pipe is suitable for being connected with an air extraction device.

[0092] The first connecting piece 13 in the embodiment is provided with a suction cup and an air pipe, the suction cup cooperates with the inner surface of the first box body 111 to form an air suction cavity, the air pipe is communicated with the air suction cavity and connected with an air suction device, when the first connecting piece 13 is in operation, the air suction device can suck the air in the air suction cavity, so that the suction cup is tightly connected with the first box body 111 under the action of the negative pressure suction force, the suction force is formed as the first acting force of the first connecting piece 13, and the air pipe can be a hard piece to provide the connecting and fixing effect, when the first box body 111 is deformed, the suction force formed by the suction cup can inhibit the deformation of the end surface structure of the first box body 111 outward, so that the abnormal sound of the box body 11 is reduced.

[0093] The first connecting piece 13 in the embodiment is provided with a suction cup and an air pipe, the suction cup cooperates with the inner surface of the first box body 111 to form an air suction cavity, the air pipe is communicated with the air suction cavity and connected with an air suction device, when the first connecting piece 13 is in operation, the air suction device can suck the air in the air suction cavity, so that the suction cup is tightly connected with the first box body 111 under the action of the negative pressure suction force, the suction force is formed as the first acting force of the first connecting piece 13, and the air pipe can be a hard piece to provide the connecting and fixing effect, when the first box body 111 is deformed, the suction force formed by the suction cup can inhibit the deformation of the end surface structure of the first box body 111 outward, so that the abnormal sound of the box body 11 is reduced.

[0094] In an embodiment of the utility model, battery device 10 can also include battery monomer subassembly, battery monomer subassembly is located in accommodating cavity 101, battery monomer subassembly includes multiple battery monomers, and at least part of multiple battery monomers is powered for coil 131.

[0095] The battery device 10 in the embodiment further includes a battery monomer assembly, the battery monomer assembly includes a plurality of battery monomers, and the plurality of battery monomers can be connected in series, parallel or mixed connection through a bus member. The plurality of battery monomers are arranged to form the battery monomer assembly. As an example, the battery monomer assembly can also be a battery module. The battery module is formed by arranging and fixing a plurality of battery monomers into an independent module. The battery module can be bundled by a cable tie.

[0096] The battery monomers in the embodiment can be secondary batteries, which are battery monomers that can be activated by charging after discharging. The battery monomers can be 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, etc. The embodiment is not limited in this regard.

[0097] In the embodiment, at least part of the plurality of battery monomers is powered for the coil 131. That is, part or all of the plurality of battery monomers in the accommodating cavity 101 can serve as a power source for the coil 131 in the first connecting piece 13. When the coil 131 is connected to the power source, the coil 131 can be connected by the bus member in the accommodating cavity 101.

[0098] In the embodiment, at least part of the plurality of battery monomers is powered for the coil 131. This structure is simple and makes it convenient and easy to assemble the first connecting piece 13.

[0099] Exemplarily, the size of the current in the coil 131 in the first connecting piece 13 can be regulated by the battery management system of the battery device 10, so that the setting of an additional electric control device is omitted, the circuit of the first connecting piece 13 can be well integrated in the battery device 10, and the first connecting piece 13 can be organically arranged in the battery device 10.

[0100] In some embodiments of the utility model, as shown in Figure 3 The fixing piece 12 can be a crossbeam, which is located in the accommodating cavity 101 and fixedly connected with the second box body 112.

[0101] In the embodiment, the fixing piece 12 is a crossbeam, which is arranged in the accommodating cavity 101 and fixedly connected with the second box body 112, the core rod 132 is fixed on the crossbeam, the core rod 132 can be fastened with the crossbeam by fasteners, or the core rod 132 can be connected and fixed with the crossbeam by welding or adhesion.

[0102] In the embodiment, the fixing piece 12 is a crossbeam, which is simple in structure and reasonable in arrangement, so that the core rod 132 can be stably and reliably fixed to the second box body 112 through the fixing piece 12, and the first connecting piece 13 is arranged conveniently and easily when assembled in the accommodating cavity 101.

[0103] In some embodiments of the utility model, as shown in Figure 3 The crossbeams extend along the second direction and can be multiple in number, and the multiple crossbeams are arranged at intervals in the third direction.

[0104] In the embodiment, the crossbeams extend along the second direction and are multiple in number, and the multiple crossbeams are arranged at intervals in the third direction, the multiple crossbeams separate the accommodating cavity 101 into multiple cavities, the multiple battery monomers can form multiple rows and be arranged in the multiple cavities respectively, the crossbeams can limit and fix the multiple battery monomers, correspondingly, the multiple first connecting pieces 13 arranged on the crossbeams can be arranged at intervals along the extension direction of the crossbeams, and multiple first connecting pieces 13 can be arranged on each crossbeam. For example, the number of crossbeams can be two, three, four or the like.

[0105] In the embodiment, the multiple crossbeams are arranged at intervals in the third direction, and the crossbeams extend along the second direction, which is simple in structure and can well meet the assembly and support needs of the battery device 10, and facilitates the installation and arrangement of the first connecting piece 13.

[0106] In some embodiments of the utility model, as shown in Figure 3 The second box body 112 can include a frame 1121 and a bottom plate 1122, the frame 1121 extends along the circumference of the box body 11, the frame 1121 cooperates with the bottom plate 1122 to define the accommodating cavity 101, and the circumference of the first box body 111 is fastened with the frame 1121.

[0107] The second box body 112 in the embodiment includes a frame 1121 and a bottom plate 1122, the frame 1121 cooperates with the bottom plate 1122 to define a containing cavity 101, the periphery of the first box body 111 is fixedly connected with the frame 1121, when the battery device 10 is assembled, the battery monomer assembly and the first connecting piece 13 are assembled into the containing cavity 101, the first connecting piece 13 abuts against the inner surface of the first box body 111 in the first direction, and the periphery of the first box body 111 is fixed with the second box body 112 through fasteners, when the vehicle drives to a harsh working condition, the first connecting piece 13 can be powered to operate, the core rod 132 is tightly connected with the inner surface of the first box body 111 under the action of the magnetic force, the deformation degree and the deformation frequency of the end surface structure of the first box body 111 in the first direction are greatly reduced under the action of the magnetic force, so that the probability of abnormal sound of the box body 11 is greatly reduced.

[0108] The periphery of the first box body 111 is fixedly connected with the frame 1121 in the embodiment, which is simple in structure, firm in fixation, convenient to disassemble and can well meet the assembly needs of the battery device 10.

[0109] In some embodiments of the utility model, reference Figure 3 As shown in the figure, the second box body 112 can include a frame 1121 and a bottom plate 1122, the frame 1121 extends along the periphery of the box body 11, the frame 1121 cooperates with the bottom plate 1122 to define a containing cavity 101, the battery device 10 further includes a plurality of second connecting pieces, the plurality of second connecting pieces are arranged at the periphery of the frame 1121 and are arranged at intervals along the periphery of the frame 1121, the first box body 111 is fixedly connected with the frame 1121 through the plurality of second connecting pieces, and the structure of the second connecting piece is same as that of the first connecting piece 13.

[0110] The battery device 10 in the embodiment is provided with a plurality of second connecting pieces, the plurality of second connecting pieces are arranged at intervals at the periphery of the frame 1121, the first box body 111 is fixedly connected with the frame 1121 through the plurality of second connecting pieces, and the structure of the second connecting piece is same as that of the first connecting piece 13, that is, the second connecting piece can also be an electromagnet structure composed of a coil 131 and a magnet, the periphery of the first box body 111 is fixedly connected with the frame 1121 through magnetic attraction, and the plurality of second connecting pieces stably fix the first box body 111 with the frame 1121 in the periphery.

[0111] When the box 11 needs to be assembled, after the first box 111 and the second box 112 are arranged in place, the second connecting piece is connected to the power supply, and then the periphery of the first box 111 is fixed with the frame 1121, and the second connecting piece can be connected or disconnected to the power supply as needed. When the box 11 needs to be disassembled, the second connecting piece is disconnected from the power supply of the first connecting piece 13, the magnetic force for fixing the first box 111 and the second box 112 disappears, and the first box 111 can be disassembled.

[0112] In the embodiment, the second connecting piece is arranged to fix the first box 111 and the frame 1121, the second connecting piece has the same structure as the first connecting piece 13, and the box 11 can be more convenient and easy to disassemble and assemble, and the fixing needs of the box 11 can be well met.

[0113] Hereinafter, with reference to Figures 1-5 The energy storage device according to the second aspect of the present application is described.

[0114] The energy storage device according to the embodiment of the present application comprises the battery device 10 according to the first aspect of the present application, and the battery device 10 is used for storing or providing electric energy.

[0115] Other configurations and operations of the energy storage device according to the embodiment of the present application are known to those skilled in the art, and will not be described in detail here.

[0116] The energy storage device according to the embodiment of the present application is provided with the battery device 10 of the above first aspect, and the first connecting piece 13 is arranged in the accommodating cavity 101 and is adapted to exert the first action force to connect the first box 111 and the second box 112 in the first direction through the first connecting piece 13, so that the first action force can well resist the deformation of the end face structure of the first box 111 and the second box 112 in the first direction, thereby well reducing the probability of deformation of the box 11, reducing the abnormal sound generated by the battery device 10, making the battery device 10 have good NVH performance, and making the user have better use experience.

[0117] Hereinafter, with reference to Figures 1-5 The electric device 100 according to the third aspect of the present application is described.

[0118] The electric device 100 according to the embodiment of the present application comprises the battery device 10 according to the first aspect of the present application or the energy storage device according to the second aspect of the present application, and the energy storage device is used for storing or providing electric energy.

[0119] Other configurations and operations of the electric device 100 according to the embodiment of the present application are known to those skilled in the art, and will not be described in detail here.

[0120] The power utilization device 100 according to the embodiment of the present application is provided with the battery device 10 or the energy storage device of the second aspect, and the first connecting member 13 is arranged in the accommodating cavity 101 and is adapted to exert a first force to connect the first box body 111 and the second box body 112 in the first direction through the first connecting member 13, so that the first force can effectively resist the deformation of the end surface structure of the first box body 111 and the second box body 112 in the first direction, thereby effectively reducing the probability of deformation of the box body 11, reducing the abnormal sound generated by the battery device 10, and making the battery device 10 have good NVH performance and better user experience.

[0121] The power utilization device 100 according to the embodiment of the present application will be described below with reference to the accompanying drawings. Figures 1-5 The power utilization device 100 according to the embodiment of the present application will be described below with reference to the accompanying drawings.

[0122] As shown in Figures 1-5 The power utilization device 100 is a vehicle and includes a motor 20, a battery device 10, and a controller 30, the controller 30 being used to control the battery device 10 to supply power to the motor 20. The battery device 10 includes a box body 11, a fixing member 12, a first connecting member 13, a battery monomer assembly, and a switch. The box body 11 includes a first box body 111 and a second box body 112, the first box body 111 being a top cover, and the second box body 112 including a frame 1121 and a bottom plate 1122, the frame 1121 and the bottom plate 1122 cooperating to define an accommodating cavity 101, the first box body 111 being fastened and connected to the frame 1121 around the first direction, and the first box body 111 covering the accommodating cavity 101.

[0123] The fixing member 12 is a crossbeam, and the number of the fixing member 12 is two. Three fixing members 12 extend in the second direction and are arranged at intervals in the third direction. Exemplarily, the fixing member 12 can be welded and connected to the bottom plate 1122 of the second box body 112. The number of the first connecting member 13 is ten, and each five of the first connecting members 13 are arranged on the fixing member 12. Five first connecting members 13 are arranged at intervals on the fixing member 12 in the second direction. The first connecting member 13 includes a coil 131 and a core rod 132, the core rod 132 being fixedly connected to the fixing member 12, and the coil 131 being wound around the core rod 132. The coils 131 on the plurality of first connecting members 13 can be connected in series or in parallel as needed. The fixing member 12 divides the accommodating cavity 101 into three cavities. The battery monomer assembly includes a plurality of battery monomers, and the plurality of battery monomers are arranged in the three cavities. The battery monomer assembly can serve as a power supply for the first connecting member 13. The switch is connected in series in the connection circuit of the first connecting member 13 and the power supply. The first connecting member 13 controls the on-off of the circuit to operate as needed. The current flowing through the coil 131 in the first connecting member 13 can be adjusted by the battery management system of the battery device 10 as needed to change the size of the magnetic force.

[0124] After the battery device 10 is assembled, the end face structure of the first box body 111 in the first direction can be supported by the plurality of first connecting pieces 13 in the accommodating cavity 101, and in addition, other support structures can also be arranged in the accommodating cavity 101 to improve the stability of the support, for example, support foam can be arranged in the accommodating cavity 101 to abut against the inner surface of the first box body 111, and the support foam can be adhesively connected with the cross beam, the battery monomer and the like. In the embodiment, the first box body 111 and the second box body 112 are connected and supported by the first connecting pieces 13, compared with the mode that the first box body 111 is perforated to be fixed and supported by fasteners, the risk of air tightness failure can be well reduced, and the battery device 10 can operate more stably.

[0125] When the vehicle drives on a road with good road conditions, the circuit of the coil 131 in the first connecting piece 13 can be disconnected, and the first connecting piece 13 only plays a supporting role for the first box body 111, at this time, due to the good road conditions, the first box body 111 has little or no deformation, when the vehicle drives to a road section with poor road conditions, the circuit of the coil 131 in the first connecting piece 13 is turned on, the plurality of first connecting pieces 13 generate magnetic force at each position of the first box body 111 to attract the end face structure of the first box body 111, so that the frequency of the first box body 111 is increased, thereby inhibiting the deformation of the first box body 111 under the action of bumping and vibration and the like, reducing the degree and frequency of deformation of the first box body 111, thereby well reducing the generation of abnormal sound, and reducing the probability of friction loss between the first box body 111 and the external structure, so that the battery device 10 can have better NVH performance, and the user can have a better experience when using.

[0126] When the battery device 10 is disassembled, the first connecting piece 13 can disconnect the power supply, so that the magnetic force disappears, and the first box body 111 can be disassembled by removing the fasteners from the second box body 112, compared with the mode that the first box body 111 and the second box body 112 are adhesively connected by the foam, the battery device 10 in the embodiment can be conveniently and easily disassembled, so that the battery device 10 is more convenient to maintain.

[0127] In another embodiment of the utility model, the battery device 10 can also be provided with a second connecting piece, the structure of the second connecting piece is same with the first connecting piece 13, the second connecting piece replaces the fastener that the frame 1121 of the original first box body 111 and the second box body 112 are fastened and connected, so that the first box body 111 and the second box body 112 are assembled and fixed by the magnetic force of the second connecting piece, the first box body 111 and the second box body 112 are connected and assembled completely by the magnetic force, so that the disassembly of the box body 11 is more convenient and easy, and the wear and tear of the first box body 111 and the second box body 112 when being disassembled by the fastener can be reduced.

[0128] It should be finally pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The application relates to a battery pack, comprising: a box (11) comprising a first box (111) and a second box (112), the first box (111) being buckled with the second box (112) in a first direction to define a containing cavity (101); a fixing member (12) fixed with the second box (112) and located in the containing cavity (101); a first connecting member (13) arranged in the containing cavity (101) and fixed to one of the fixing member (12) and the first box (111), the first connecting member (13) being configured to generate a first force in the first direction, the first force being used to connect the other one of the fixing member (12) and the first box (111) to the first connecting member (13) in abutment.

2. The battery device according to claim 1, characterized by The first connecting member (13) comprises a coil (131) and a core rod (132), the core rod (132) extending in the first direction and being arranged on the fixing member (12), and the coil (131) being wound on the core rod (132), two ends of the coil (131) being adapted to be connected to a power supply.

3. The battery device of claim 2, wherein, An end surface of the core rod (132) facing the first box (111) is attached to an inner surface of the first box (111).

4. The battery device of claim 2, wherein The number of the first connecting members (13) is one or more, and when the number of the first connecting members (13) is more than one, the first connecting members (13) are arranged in a second direction and / or a third direction, the second direction intersecting with the third direction and the first direction.

5. The battery device of claim 2, wherein The coils (131) of the first connecting members (13) are connected in series, in parallel or in a mixed mode.

6. The battery device of claim 2, wherein A switch is further arranged in series with the coil (131).

7. The battery device of claim 2, wherein A battery cell assembly is further arranged in the containing cavity (101), the battery cell assembly comprising a plurality of battery cells, at least part of the battery cells being used to supply power to the coil (131).

8. The battery device of claim 1, wherein The fixing member (12) is a crossbeam, the crossbeam being arranged in the containing cavity (101) and fixedly connected with the second box (112).

9. The battery device of claim 8, wherein, The crossbeams extend in the second direction and have a plurality of numbers, and the crossbeams are arranged in the third direction.

10. The battery device according to any one of claims 1-9, wherein, The second box (112) comprises a frame (1121) and a bottom plate (1122), the frame (1121) extending along a circumferential direction of the box (11), the frame (1121) and the bottom plate (1122) cooperating to define the containing cavity (101), and a circumferential edge of the first box (111) being fixedly connected with the frame (1121).

11. The battery device according to any one of claims 1 to 9, wherein The second box (112) comprises a frame (1121) and a bottom plate (1122), the frame (1121) extending along a circumferential direction of the box (11), the frame (1121) and the bottom plate (1122) cooperating to define the containing cavity (101), The battery device further comprises a plurality of second connecting members, the plurality of second connecting members are arranged along the periphery of the frame (1121) and are arranged at intervals along the periphery of the frame (1121), the first box (111) is fixedly connected with the frame (1121) through the plurality of second connecting members, and the second connecting members have the same structure as the first connecting members (13).

12. An energy storage device, characterized by The battery device according to any one of claims 1-11 is used for storing or providing electric energy.

13. An electrical device, comprising: The energy storage device according to claim 12 comprises the battery device according to any one of claims 1-11, and is used for storing or providing electric energy.

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