Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device. The battery device comprises a battery box body, and the battery box body comprises a stamping type frame and a bottom plate. The stamping type frame is integrally formed, and the stamping type frame is in an annular shape and forms a containing cavity. The bottom plate is arranged at the bottom of the containing cavity, and the fixing part of the bottom plate is connected with the ram-type frame. According to the battery device with the structure, the battery box body adopts the stamping type frame, and the stamping type frame does not need to be welded, so that the processing cost of the battery device is reduced. On the other hand, the stamping type frame is integrally formed, compared with welding, the integrity of the battery box body is better, the integration degree is high, and the structural strength of the battery box body can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and a power utilization device. BACKGROUND

[0002] A battery generally comprises a battery box and a plurality of battery monomers arranged in the battery box. The related art provides a battery box, the frame of which is composed of a plurality of profiles welded together. The battery box has high processing cost, low integration, and weak structural strength. CONTENT

[0003] In view of the above problems, the present application provides a battery device and a power utilization device, the frame of the battery box is not formed by welding, which can reduce the processing cost of the battery device and improve the integration and structural strength of the battery box.

[0004] To solve the above technical problems, one technical scheme adopted by the present application is to provide a battery device, which comprises a battery monomer and a battery box, and the battery box comprises: a stamping frame, the stamping frame is integrally formed, the stamping frame is annular and has a receiving cavity, and the battery monomer is arranged in the receiving cavity; and a bottom plate, the bottom plate is arranged at the bottom of the receiving cavity, and the bottom plate comprises a fixing part at the edge of the bottom plate, and the fixing part is connected with the stamping frame.

[0005] The battery device with the above structure adopts the stamping frame, which does not need to be welded, thereby reducing the processing cost of the battery device. On the other hand, the stamping frame is integrally formed, which has better integrity, high integration, and improved structural strength of the battery box compared with welding.

[0006] In a possible implementation, the bottom plate is a heat exchange plate.

[0007] The heat exchange plate can exchange heat with the battery monomers in the battery box, maintain the stability of the temperature of the battery device, and facilitate the thermal management of the battery device.

[0008] In a possible implementation, the battery box further comprises: a bottom guard plate, the bottom guard plate is located outside the bottom of the receiving cavity, and the bottom guard plate is arranged on the stamping frame.

[0009] The above arrangement can seal and protect the bottom of the battery box.

[0010] In a possible implementation, the stamping frame has a lap part extending towards the receiving cavity, and the fixing part is fixed on the lap part.

[0011] The fixing part of the bottom plate is fixed on the lap joint part of the stamping frame, which can improve the contact area of the bottom plate and the stamping frame, and the connection effect of the bottom plate and the stamping frame is better. On the other hand, the lap joint part can also reduce the risk of deformation of the stamping frame.

[0012] In a possible implementation, the fixing part is fixed with the lap joint part by a fixing member.

[0013] The fixing member can improve the fixing strength of the bottom plate and the stamping frame.

[0014] In a possible implementation, the fixing member is one of a rivet, a bolt, and a screw.

[0015] The fixing member is suitable for connecting and fixing different materials, and has high fixing reliability.

[0016] In a possible implementation, a sealing member is arranged between the fixing part and the lap joint part.

[0017] The sealing member can reduce the risk of leakage at the connection part between the bottom plate and the stamping frame.

[0018] In a possible implementation, the stamping frame comprises a frame body and the lap joint part, and the lap joint part is connected to the frame body.

[0019] The frame body defines a receiving cavity of the battery box, and the lap joint part is used for fixing the bottom plate and also plays a role of structural reinforcement for the stamping frame.

[0020] In a possible implementation, the lap joint part comprises a connecting segment and a lap joint segment, the lap joint segment is connected to the connecting segment, the connecting segment is connected to the frame body, and the lap joint segment and the connecting segment are not coplanar in the height direction of the receiving cavity.

[0021] The connecting segment and the lap joint segment are not coplanar, which can improve the structural strength of the lap joint part.

[0022] In a possible implementation, in the height direction of the receiving cavity, the lap joint segment is located on the side of the connecting segment facing the receiving cavity.

[0023] After the bottom plate is fixed on the lap joint segment, the bottom plate is not exposed to the outside, and the bottom plate can be protected.

[0024] In a possible implementation, the lap joint segment is parallel to the connecting segment, and the lap joint part further comprises a linking segment, and the lap joint segment is connected to the connecting segment through the linking segment.

[0025] The abovementioned mutually parallel overlapping sections and connecting sections are connected by the transition sections, thereby improving the connecting strength of the overlapping sections and the transition sections.

[0026] In a possible implementation, the width of the fixing part ranges from 10 mm to 30 mm.

[0027] The width is not less than 10 mm, so that the bottom plate and the stamping frame have sufficient contact and fixing area. The width is not more than 30 mm, so that the risk of local stress concentration is reduced, and the material is saved and the weight of the battery box is reduced.

[0028] In a possible implementation, the width ranges from 15 mm to 25 mm.

[0029] The width range can better enable the bottom plate and the stamping frame to have sufficient contact and fixing area, reduce local stress concentration, reduce the weight of the battery box, and save material.

[0030] In a possible implementation, the distance between two adjacent fixing parts ranges from 10 mm to 100 mm.

[0031] The distance between the two fixing parts is not more than 100 mm, so that the bottom plate and the stamping frame are fixed by a sufficient number of fixing parts, thereby improving the fixing strength. The distance between the two adjacent fixing parts is not less than 10 mm, so that the risk of the strength of the bottom plate and the stamping frame being reduced due to too many holes on the bottom plate and the stamping frame is reduced.

[0032] In a possible implementation, the distance ranges from 15 mm to 30 mm.

[0033] The distance range can better enable the bottom plate and the stamping frame to have sufficient fixing strength, and reduce the risk of the strength of the bottom plate and the stamping frame being reduced due to too many holes on the bottom plate and the stamping frame.

[0034] In a possible implementation, the fixing part is located on the side of the overlapping part facing the accommodating cavity.

[0035] The bottom plate is located at the bottom of the accommodating cavity, and the overlapping part of the stamping frame can protect the bottom plate.

[0036] To solve the above technical problems, another technical solution adopted by the present application is to provide an electric device, which comprises a battery device, and the battery device is the battery device described above, and the battery device is used to provide electric energy.

[0037] The battery device has the stamping frame, the stamping frame does not need to be welded, thereby reducing the processing cost of the battery device. On the other hand, the stamping frame is integrally formed, compared with welding, the battery box has better integrity, high integration, and can improve the structural strength of the battery box. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 Structure diagram of a vehicle according to one or more embodiments;

[0040] Figure 2 Structure diagram of a battery box of a battery device according to some embodiments;

[0041] Figure 3 Structure diagram of a battery box according to some embodiments; Figure 2 Structure explosion diagram of a battery box;

[0042] Figure 4 Structure diagram of a stamping frame of a battery box from a first perspective; Figure 2 Structure diagram of a stamping frame of a battery box from a second perspective;

[0043] Figure 5 Structure diagram of a stamping frame of a battery box from a second perspective; Figure 2 Structure diagram of a stamping frame of a battery box from a second perspective;

[0044] Figure 6 Structure diagram of a stamping frame along the Aa cross section; Figure 5 Structure diagram of a stamping frame along the Aa cross section;

[0045] Wherein, 1000, vehicle; 200, controller; 300, motor; 100, battery device; 110, battery box; 10, stamping frame; 11, lap joint part; 111, connecting section; 112, lap joint section; 113, connecting section; 12, frame body; 20, bottom plate; 21, fixing part; 30, accommodating cavity; 40, fixing part; 50, sealing part. DETAILED DESCRIPTION

[0046] The embodiments of the technical solutions of the present application will be described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise noted, the terms "including" and "comprising" are open-ended and do not exclude the presence of unrecited elements or limitations.

[0048] 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, unless otherwise explicitly and specifically limited, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0049] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] 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 a "or" relationship.

[0051] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting 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", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings 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 use of battery is more and more widely, not only the battery is applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also is widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment and aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0054] Among them, the battery usually includes a box body and a plurality of battery monomers arranged in the battery box body, and the plurality of battery monomers are connected in series or parallel to form a battery module. Among them, the existing battery box body, the frame of the battery box body is composed of a plurality of profiles welded. The battery box body has high processing cost, low integration degree, and weak structural strength of the battery box body.

[0055] Based on the above consideration, in order to solve the technical problems that the frame of the battery box body is composed of a plurality of profiles welded in the prior art, the battery box body has high processing cost, low integration degree, and weak structural strength of the battery box body, the present application proposes a battery device and a power utilization device. The battery device adopts a stamping frame, and the stamping frame is integrally formed and has a receiving cavity in a ring shape, so that the battery box body has better integrity, high integration degree, and improved structural strength of the battery box body.

[0056] The following embodiments are described for convenience with a power utilization device as a vehicle in an embodiment of the present application.

[0057] Please refer to Figure 1 , Figure 1 is a structural schematic view of a vehicle according to one or more embodiments.

[0058] The vehicle 1000 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 automobile, or a range extended automobile, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, head, or tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation, and driving.

[0059] In some embodiments of the present application, the battery device 100 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0060] In order to improve the performance of the electric device, the present application provides a battery device and an electric device, please refer to Figure 2 and Figure 3 ; Figure 2 A structural schematic diagram of a battery box of the battery device according to some embodiments; Figure 3 A structural schematic diagram of a battery box of the battery device according to some embodiments; Figure 2 A structural schematic diagram of a battery box of the battery device according to some embodiments.

[0061] In some embodiments, the battery device 100 includes battery monomers (not shown) and a battery box 110. The battery box 110 includes a stamping frame 10 and a bottom plate 20. The stamping frame 10 is integrally formed, and the stamping frame 10 is annular and has a receiving cavity 30. The battery monomers are arranged in the receiving cavity 30. The bottom plate 20 is arranged at the bottom of the receiving cavity 30, and the bottom plate 20 includes a fixing portion 21 at the edge of the bottom plate 20, and the fixing portion 21 is connected with the stamping frame 10.

[0062] The stamping frame 10 is made by stamping, which means that an external force is applied to a metal plate to make it plastically deform to have a specific shape. In this embodiment, the stamping frame is formed by one-time stamping and has a hollow basin structure. Compared with the method of welding multiple profiles to form the accommodation cavity 30, the stamping frame 10 does not have a connecting part and a mold line when forming the accommodation cavity 30, and the integrity of the stamping frame 10 is better, the integration is high, and the stamping frame 10 directly stamped from a metal plate can reduce the mass of the battery box 110 and simplify the structure of the battery box 110. In addition, in this embodiment, the stamping frame 10 has a hollow rectangular basin structure. In some other embodiments, the stamping frame 10 can also have a hollow circular structure, a hollow triangular structure, a hollow irregular polygonal structure, etc. The shape of the bottom plate 20 is the same as the shape of the accommodation cavity 30. The stamping frame 10 is hollow and has the accommodation cavity 30, wherein the bottom plate 20 is fixed at the opening at the bottom of the accommodation cavity 30, and the fixed part 21 of the bottom plate 20 is connected with the stamping frame 10, so that the opening at the bottom of the accommodation cavity 30 is sealed.

[0063] In the above manner, the battery box 110 of the battery device 100 adopts the stamping frame 10, which does not need to be welded, thereby reducing the processing cost of the battery device 100. On the other hand, the stamping frame 10 is integrally formed, and compared with welding, the integrity of the battery box 110 is better, the integration is high, and the structural strength of the battery box 110 can be improved.

[0064] In some embodiments, the bottom plate 20 is a heat exchange plate.

[0065] The heat exchange plate is a plate-shaped structural member that exchanges heat with the battery monomer in the battery box 110. The bottom plate 20 is a heat exchange plate, so that the bottom plate 20 can not only be used to seal the bottom of the accommodation cavity 30, but also can play a heat exchange role. In some embodiments, the heat exchange plate has a cooling liquid flow channel (not shown) inside, which is used for circulating cooling liquid so that the cooling liquid can exchange heat with the battery monomer in the battery box 110.

[0066] As described above, the heat exchange plate can exchange heat with the battery monomer in the battery box 110, can maintain the stability of the temperature of the battery device 100, and is beneficial to the thermal management of the battery device 100.

[0067] In some embodiments, the stamping frame 10 has a lap joint part 11 extending towards the accommodation cavity 30, and the fixed part 21 is fixed on the lap joint part 11.

[0068] Please refer to Figure 4 , Figure 4 To Figure 2The structure diagram of the first perspective of the stamping frame of the battery box. In this embodiment, the lap joint part 11 of the stamping frame 10 is perpendicular to the frame wall of the stamping frame 10, so that the plate edge of the bottom plate 20 can be lapped on the lap joint part 11, and the contact area of the lap joint part 11 and the bottom plate 20 is increased. Thus, the fixing strength of the bottom plate 20 and the stamping frame 10 can be improved. On the other hand, the structure that the lap joint part 11 is perpendicular to the frame wall of the stamping frame 10 can also reduce the risk of deformation of the stamping frame 10, and increase the structural strength of the battery box 110. In this embodiment, the lap joint part 11 is stamped at the same time when the stamping frame 10 is stamped.

[0069] The above structure fixes the fixing part 21 of the bottom plate 20 on the lap joint part 11 of the stamping frame 10, which can increase the contact area of the bottom plate 20 and the stamping frame 10, and the connection effect of the bottom plate 20 and the stamping frame 10 is better. On the other hand, the inwardly bent lap joint part 11 can also reduce the risk of deformation of the stamping frame 10.

[0070] In order to further reduce the mass of the battery box 110, in this embodiment, the stamping frame 10 is a single-layer profile structure, and the structural strength of the single-layer profile structure of the stamping frame 10 is increased through the lap joint part 11.

[0071] In some embodiments, the fixing part 21 is fixed with the lap joint part 11 through the fixing part 40.

[0072] Understandably, the stamping mode forms the stamping frame 10 by applying external force to the metal plate. The steel has higher strength and toughness, so in this embodiment, the stamping frame 10 is preferably made of steel. In addition, the thermal conductivity of aluminum is higher than that of steel, so in this embodiment, the bottom plate 20 is preferably made of aluminum. The above, the bottom plate 20 and the stamping frame are two different materials, and if they are fixed by welding, there is a risk of welding cracking and low fixing strength, so in this embodiment, the bottom plate 20 and the stamping frame 10 are fixed by the fixing piece 40 to improve the strength of the battery box 110. In this embodiment, the fixing part 21 is fixedly connected with the lap part 11 by a rivet. Specifically, the lap part 11 has a fixing hole (not marked), and the fixing part 21 has a locking hole (not shown) corresponding to the fixing hole. The locking hole can be a blind hole or a through hole. The rivet specifically includes a shank (not marked), and a head (not marked) and a stub (not marked) at both ends of the shank. When the rivet is fixed, the stub of the rivet passes through the fixing hole of the lap part 11 into the locking hole of the fixing part 21, and then the stub of the rivet is pressed by a riveting tool to deform and expand, so that the size of the stub increases, and the head and the end of the rivet are respectively on both sides of the lap part 11 and the fixing part 21, locking and fixing the lap part 11 and the fixing part 21 together. The specific structure of the rivet is not limited. In some other embodiments, the fixing piece 40 can also be a screw, a bolt, a pin, etc.

[0073] In the above manner, the fixing strength of the bottom plate 20 and the stamping frame 10 can be improved, and the rivet can firmly fix the bottom plate 20 and the stamping frame 10 of different materials.

[0074] Please refer to Figure 5 and Figure 6 , Figure 5 is Figure 2 the structure diagram of the stamping frame of the battery box from the second perspective; Figure 6 is Figure 5 the cross-sectional structure diagram of the stamping frame along the Aa cross section. In some embodiments, a sealing piece 50 is arranged between the fixing part 21 and the lap part 11.

[0075] Understandably, the bottom plate 20 and the stamping frame 10 are fixed by the fixing piece 40. This fixing method cannot completely seal the contact surface between the bottom plate 20 and the stamping frame 10, which may lead to the risk of leakage of the battery box 110. In this embodiment, to reduce the risk of leakage, a sealing piece 50 is arranged between the fixing part 21 and the lap part 11 to reduce the risk of leakage of the battery box 110. In this embodiment, the sealing piece 50 is specifically sealing glue. In some other embodiments, the sealing piece 50 can also be a sealing ring, a sealing gasket, etc.

[0076] The above structure can reduce the risk of leakage at the connecting part between the bottom plate 20 and the stamping frame 10.

[0077] In some embodiments, the stamping frame 10 comprises a frame body 12 and a lap joint part 11 connected to the frame body 12. The lap joint part 11 comprises a connecting segment 111 and a lap joint segment 112 connected to the connecting segment 111. The connecting segment 112 is connected to the frame body 12, and the lap joint segment 112 and the connecting segment 111 are not coplanar in the height direction of the accommodating cavity 30.

[0078] The frame body 12 is annular, and the frame body 12 of the battery box 110 defines the accommodating cavity 30. The lap joint part 11 of the battery box 110 is used to fix the bottom plate 20. The lap joint segment 112 and the connecting segment 111 are not coplanar, i.e., the lap joint part 11 is not a flat plate. In this embodiment, the lap joint segment 112 and the connecting segment 111 are on different planes and are parallel to each other. The connecting segment 111 serves to fix the lap joint segment 112. In addition, the connecting segment 111 is arranged to make the lap joint part 11 non-planar, so that the connecting segment 111 can also serve to strengthen the structure and reduce the risk of deformation of the lap joint part 11. In other embodiments, the lap joint segment 112 can also be arranged at an angle to the connecting segment 111, or the lap joint segment 112 and the connecting segment 111 can also be arranged as curved surfaces.

[0079] The above structure makes the lap joint part 11 non-linear, which can improve the structural strength of the lap joint part 11.

[0080] In some embodiments, the lap joint segment 112 is parallel to the connecting segment 111, and the lap joint part 11 further comprises a linking segment 113 connecting the lap joint segment 112 to the connecting segment 111. The parallel arrangement of the lap joint segment 112 and the connecting segment 111 makes the lap joint segment 112 and the connecting segment 111 on different planes, which can serve to strengthen the structure of the lap joint part 11. In addition, the parallel arrangement of the lap joint segment 112 and the connecting segment 111 can make the lap joint segment 112 and the connecting segment 111 not occupy the space of the accommodating cavity 30 in the height direction, which can improve the space utilization.

[0081] In some embodiments, in the height direction of the accommodating cavity 30, the lap joint segment 112 is located on the side of the connecting segment 111 facing the accommodating cavity 30.

[0082] The above structure can protect the bottom plate 20 from being exposed to the outside after the bottom plate 20 is fixed to the lap joint segment 112.

[0083] In some embodiments, the battery box 110 further comprises a bottom guard plate (not shown) located outside the bottom of the accommodating cavity 30 and arranged on the stamping frame 10.

[0084] Specifically, in the embodiment, the bottom guard plate seals the opening at the bottom of the accommodating cavity 30, and the bottom guard plate also has a protection function. The bottom guard plate can be arranged on the side of the lap joint section 112 or the connecting section 111 of the stamping frame 10 away from the accommodating cavity 30. The bottom guard plate can be fixed on the stamping frame 10 by rivets, screws, bolts, etc. In addition, in some embodiments, the side of the bottom guard plate facing the accommodating cavity 30 is also provided with a buffer part (not shown), which can be buffer foam or buffer rubber, etc.

[0085] As described above, the bottom guard plate can seal and protect the bottom of the battery box 110.

[0086] In some embodiments, the width of the fixing part 21 ranges from 10 mm to 30 mm.

[0087] The width of the fixing part 21 refers to Figure 6 the medium size m. The width of the fixing part 21 located on the lap joint part 11 can be 10 mm, 13 mm, 18 mm, 20 mm, 23 mm, 25 mm, 28 mm, 30 mm, etc. In some preferred embodiments, the width of the fixing part 21 located on the lap joint part 11 ranges from 15 mm to 25 mm, such as 15 mm, 18.5 mm, 20 mm, 23.5 mm, 25 mm, etc.

[0088] As described above, the width of the fixing part 21 located on the lap joint part 11 is not less than 10 mm, so that the bottom plate 20 has sufficient contact and fixing area with the stamping frame 10, improving the structural stability of the battery box 110. The width of the fixing part 21 located on the lap joint part 11 is not greater than 30 mm, which can reduce the risk of local stress concentration caused by excessive contact area, and also save materials and reduce the weight of the battery box 110. Preferably, the width of the fixing part 21 located on the lap joint part 11 can range from 15 mm to 25 mm, which can better ensure that the bottom plate 20 has sufficient contact and fixing area with the stamping frame 10, reduce local stress concentration, reduce the weight of the battery box 110, and save materials.

[0089] In some embodiments, the distance between two adjacent fixing parts 40 ranges from 10 mm to 100 mm.

[0090] The distance between two adjacent fixing parts 40 can be 10 mm, 20 mm, 25.5 mm, 36 mm, 45 mm, 51 mm, 70 mm, 92 mm, 100 mm, etc. In some preferred embodiments, the distance between two adjacent fixing parts 40 ranges from 15 mm to 30 mm, such as 15 mm, 17.6 mm, 20 mm, 24 mm, 27 mm, 30 mm, etc.

[0091] The distance between two adjacent fixing members 40 is not greater than 100 mm, so that the bottom plate 20 and the stamping frame 10 are fixed by a sufficient number of fixing members 40, thereby improving the fixing strength. The distance between two adjacent fixing members 40 is not less than 10 mm, thereby reducing the risk of reducing the strength of the bottom plate 20 and the stamping frame 10 due to too many holes on the bottom plate 20 and the stamping frame 10. Preferably, the distance between two adjacent fixing members 40 ranges from 15 mm to 30 mm, so that the bottom plate 20 and the stamping frame 10 have sufficient fixing strength, and the risk of reducing the strength of the bottom plate 20 and the stamping frame 10 due to too many holes on the bottom plate 20 and the stamping frame 10 is reduced.

[0092] In the embodiment, the bottom plate 20 is located in the accommodating cavity 30, and the fixing portion 21 of the bottom plate 20 is lapped on the side of the lapping portion 11 facing the accommodating cavity 30, so that the lapping portion 11 of the stamping frame 10 can protect the bottom plate 20. In other embodiments, the fixing portion 21 of the bottom plate 20 can also be lapped on the side of the lapping portion 11 away from the accommodating cavity 30, so that the bottom plate 20 is located outside the accommodating cavity 30, thereby avoiding occupying the space of the accommodating cavity 30 and increasing the effective space of the accommodating cavity 30.

[0093] In the embodiment, the bottom plate 20 is located in the accommodating cavity 30, and the fixing portion 21 of the bottom plate 20 is lapped on the side of the lapping portion 11 facing the accommodating cavity 30, so that the lapping portion 11 of the stamping frame 10 can protect the bottom plate 20. In other embodiments, the fixing portion 21 of the bottom plate 20 can also be lapped on the side of the lapping portion 11 away from the accommodating cavity 30, so that the bottom plate 20 is located outside the accommodating cavity 30, thereby avoiding occupying the space of the accommodating cavity 30 and increasing the effective space of the accommodating cavity 30.

[0094] In some embodiments, the battery box 110 can further include a mounting beam (not shown). The mounting beam is arranged in the accommodating cavity 30, and both ends of the mounting beam are fixed on the stamping frame 10. The mounting beam is arranged transversely in the accommodating cavity 30. The number of the mounting beam can be one or more, and multiple mounting beams can be arranged in parallel or intersected. The mounting beam can support the stamping frame 10 and improve the structural strength of the stamping frame 10. On the other hand, the mounting beam divides the accommodating cavity 30 into several small cavities, which facilitates the placement and fixation of the battery monomers. The mounting beam can also support and protect the battery monomers to prevent deformation of the battery monomers during charging and discharging.

[0095] The application also provides a power utilization device. The power utilization device includes the battery device 100. It should be noted that the battery device 100 in the embodiment is the battery device 100 described in the above embodiments, which will not be described herein.

[0096] The above power utilization device, the battery box 110 adopts the stamping frame 10, the stamping frame 10 does not need welding, thereby reducing the processing cost of the battery device 100.On the other hand, the stamping frame 10 is integrally formed, compared with welding, the integrity of the battery box 110 is better, the integration degree is high, can improve the structural strength of the battery box 110.

[0097] Finally, in a specific application scenario, the frame of the existing battery box is composed of multiple profiles welded together, the battery box has high processing cost, low integration degree and weak structural strength of the battery box.The battery device 100 of the present application includes a battery box 110 and a battery monomer, the battery box 110 includes a stamping frame 10 and a bottom plate 20;the stamping frame 10 is integrally formed, the stamping frame 10 is annular and has a receiving cavity 30;the bottom plate 20 is arranged at the bottom of the receiving cavity 30, and the fixing part 21 of the bottom plate 20 is connected with the stamping frame 10.The bottom plate 20 is a heat exchange plate.The stamping frame 10 has a lap joint part 11 extending towards the receiving cavity 30, and the fixing part 21 is fixed on the lap joint part 11.The fixing part 21 is fixed with the lap joint part 11 by rivets.A sealing element 50 is arranged between the fixing part 21 and the lap joint part 11.The lap joint part 11 includes a connecting section 111 and a lap joint section 112, the lap joint section 112 connects the connecting section 111, and the lap joint section 112 and the connecting section 111 are not coplanar.The width of the fixing part 21 on the lap joint part 11 ranges from 15mm to 25mm.The distance between two adjacent fixing parts 40 ranges from 15mm to 30mm.The fixing part 21 is located on one side of the lap joint part 11 facing the receiving cavity 30.

[0098] In the above manner, the battery box 110 adopts the stamping frame 10, the stamping frame 10 does not need welding, thereby reducing the processing cost of the battery device 100.On the other hand, the stamping frame 10 is integrally formed, compared with welding, the integrity of the battery box 110 is better, the integration degree is high, can improve the structural strength of the battery box 110.

[0099] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit 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 for 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, which should be covered in the scope of the claims and description 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 battery device comprises a battery cell and a battery box, wherein the battery box comprises: a stamping frame, which is integrally formed and annularly formed with a receiving cavity, and the battery cell is arranged in the receiving cavity; a bottom plate, which is arranged at the bottom of the receiving cavity and comprises a fixing portion at the edge of the bottom plate, and the fixing portion is connected with the stamping frame.

2. The battery device according to claim 1, wherein the bottom plate is a heat exchange plate. The battery box further comprises:

3. The battery device of claim 2, wherein, a bottom guard plate, which is arranged outside the bottom of the receiving cavity and arranged on the stamping frame.

4. The battery device according to claim 1, wherein the stamping frame has a lap portion extending towards the receiving cavity, and the fixing portion is fixed on the lap portion.

5. The battery device according to claim 4, wherein the fixing portion is fixed with the lap portion by a fixing member.

6. The battery device according to claim 5, wherein the fixing member is one of a rivet, a bolt and a screw.

7. The battery device according to claim 5, wherein a sealing member is arranged between the fixing portion and the lap portion.

8. The battery device according to claim 4, wherein the stamping frame comprises a frame body and the lap portion, and the lap portion is connected with the frame body.

9. The battery device according to claim 8, wherein the lap portion comprises a connecting segment and a lap segment, the lap segment is connected with the connecting segment, the connecting segment is connected with the frame body, and the lap segment and the connecting segment are not coplanar in the height direction of the receiving cavity.

10. The battery device according to claim 9, wherein in the height direction of the receiving cavity, the lap segment is located on the side of the connecting segment towards the receiving cavity.

11. The battery device according to claim 10, wherein the lap segment is parallel to the connecting segment, and the lap portion further comprises a linking segment, and the lap segment is connected with the connecting segment through the linking segment.

12. The battery device according to claim 1, wherein the width of the fixing portion ranges from 10 mm to 30 mm.

13. The battery device according to claim 12, wherein the width ranges from 15 mm to 25 mm.

14. The battery device according to claim 5, wherein the distance between two adjacent fixing members ranges from 10 mm to 100 mm.

15. The battery device according to claim 14, wherein the distance ranges from 15 mm to 30 mm.

16. The battery device according to claim 4, wherein the fixing portion is located on the side of the lap portion towards the receiving cavity. The power consuming device comprises the battery device according to any one of claims 1 to 16, and the battery device is used to provide electric energy. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 17. An electrical device, comprising: ​

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