Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of battery devices.The battery device comprises a box body and a battery module, the box body comprises a bottom plate and a frame arranged on the bottom plate, and the bottom plate and the frame are matched to form a containing groove used for containing the battery module; a bearing part extending towards the containing groove is arranged on the side, close to the bottom plate, of the frame, the bearing part and the bottom plate are arranged in a stacked mode, and the bearing part and the bottom plate jointly bear the battery module. The battery device has the advantage that the thickness of the bottom plate can be reduced.

Description

TECHNICAL FIELD

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

[0002] The battery device includes a box body and a battery module arranged in the box body. Generally, the bottom plate of the box body supports the battery module. However, for the application scenarios in which the capacity of the battery device is large and the battery module required is large and more, a bottom plate with higher strength is required for support. The current improvement method is to use a bottom plate with a larger thickness, which results in a large thickness of the bottom plate and high cost. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a battery device and an electric equipment, which at least solve the technical problem of thick bottom plate of the battery device.

[0004] To achieve the above-mentioned purpose, according to some embodiments of the present application, a battery device is provided, which includes a box body and a battery module. The box body includes a bottom plate and a frame arranged on the bottom plate. The bottom plate and the frame cooperate to form a containing groove for placing the battery module. The frame is provided with a support member arranged on the side close to the bottom plate and extending towards the containing groove. The support member is arranged in a stack with the bottom plate. The support member and the bottom plate jointly support the battery module.

[0005] By arranging the support member on the side of the frame close to the bottom plate and extending towards the containing groove, the support member supports the bottom of the battery module. The support member and the bottom plate jointly support the battery module. The support member can bear part of the pressure of the battery module on the bottom plate, thereby reducing the requirement for the strength of the bottom plate. The bottom plate can be designed to be thinner. This scheme has the advantage of reducing the thickness of the bottom plate.

[0006] In some embodiments, the frame further includes an outer frame and a middle beam arranged in the outer frame. The two ends of the middle beam are respectively connected to the two opposite sides of the outer frame. The middle beam cooperates with the bottom plate and the outer frame to form at least two containing grooves. The outer frame and / or the middle beam is provided with the support member.

[0007] For the outer frame with a large length in a certain direction, the middle beam can play a reinforcing role, reduce the risk of bending of the outer frame beam body, and further reduce the risk of deformation of the battery device. Meanwhile, the support member can be arranged on the middle beam, thereby increasing the support points of the battery module and better supporting the battery module.

[0008] In some embodiments, the outer frame comprises a front beam and a rear beam arranged oppositely, and a left beam and a right beam respectively connecting the front beam and the rear beam, and at least one of the front beam, the rear beam, the left beam and the right beam is provided with the supporting member.

[0009] By arranging the supporting member on at least one of the beam bodies of the outer frame, the supporting member is used to support the bottom of the battery module, and arranging the supporting member on the beam body of the outer frame can reduce the occupation of the middle space of the outer frame.

[0010] In some embodiments, the front beam and the rear beam are provided with the supporting member on the side facing each other; and / or, the left beam and the right beam are provided with the supporting member on the side facing each other.

[0011] By arranging the supporting member on both of the oppositely arranged beam bodies, the supporting height of the two beam bodies can be ensured to be consistent, and the problem of increasing the amount of glue by gluing and raising the height due to the inconsistent height of the battery module can be alleviated.

[0012] In some embodiments, the supporting member arranged on the outer frame is arranged along the inner edge of the outer frame, and / or the supporting member arranged on the outer frame is arranged along the length direction of the middle beam.

[0013] By arranging the supporting member along the inner edge of the outer frame or along the length direction of the middle beam, the battery module can be supported from the outer periphery of each battery module, and the occupation of the middle space of the accommodating groove can be reduced.

[0014] In some embodiments, the supporting member is integrally formed with the frame.

[0015] By arranging the supporting member to be integrally formed with the frame, the manufacturing method is simple, which is beneficial to reduce the process complexity.

[0016] In some embodiments, the bottom plate is provided with a groove, and at least part of the supporting member is arranged in the groove.

[0017] By arranging the groove to accommodate the supporting member, the height difference between the supporting member and the bottom plate can be reduced, the amount of glue can be reduced, and the manufacturing cost can be reduced.

[0018] In some embodiments, the top surface of the supporting member is flush with the side of the bottom plate facing the accommodating groove, and the supporting member and the bottom plate jointly support the battery module.

[0019] By arranging the groove on the bottom plate, the supporting member is arranged in the groove, and the top surface of the supporting member is arranged to maintain the same height as the side of the bottom plate facing the accommodating groove, so that the battery module does not need to be additionally padded with a glue layer, and the manufacturing cost is reduced.

[0020] In some embodiments, the bottom plate is welded with the support; and / or

[0021] The battery device comprises a fastener connecting the bottom plate and the support.

[0022] By setting the bottom plate and the support to be welded, the connection strength of the bottom plate and the support can be improved. The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clear, the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to the structures shown in these drawings without creative labor.

[0024] Figure 1 Structure diagram of a vehicle according to some embodiments of the present application;

[0025] Figure 2 Exploded structure diagram of a battery device according to some embodiments of the present application;

[0026] Figure 3 Structure diagram of a bottom plate and a frame of a battery device according to some embodiments of the present application;

[0027] Figure 4 Structure diagram of a box body of a battery device according to some embodiments of the present application; Figure 3

[0028] Structure diagram of a frame of a battery device according to some embodiments of the present application; Figure 5

[0029] Another structure diagram of a frame of a battery device according to some embodiments of the present application; Figure 6

[0030] Structure diagram of a cross section of a box body of a battery device according to some embodiments of the present application; Figure 7

[0031] Enlarged structure diagram of A in Figure 8 Figure 7

[0032] Explanation of reference numerals:

[0033] 1000, vehicle;​​

[0034] 100, battery device; 200, control device; 300, motor;

[0035] 10, box body; 11, cover plate; 12, body;

[0036] 20, battery module;

[0037] 1, bottom plate; 2, frame; 21, rear beam; 22, front beam; 23, right beam; 24, left beam; 25, middle beam; 27, hollow cavity; 3, accommodating groove; 4, supporting piece; 5, recess; 6, accommodating space; 7, pull rivet nut; 8, nut.

[0038] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In addition, the technical solutions in the various embodiments of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0044] The description of "up", "down", "front", "back", "left", "right" and the like in the present application is based on the orientation shown in the figure, and is only used to explain the relative positional relationship between the components in the posture shown in the figure. If the specific posture changes, the directional indication also changes accordingly.

[0045] 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 water power, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0046] The battery device is used to be installed on the electric equipment. Taking the vehicle as an example, the battery device is generally arranged on the beam of the vehicle. For commercial vehicles, the required driving force is larger, and the capacity of the battery device is also required to be larger. In the specific structure, more number or larger volume of battery modules need to be accommodated in the box body of the battery device, so the requirement for the strength of the bottom plate is higher.

[0047] The applicant found through careful research that the strength requirement of the battery device exceeding 500 kg on the box body bottom plate will be increased, and the 1.5 mm thickness of the bottom plate of the household car cannot meet the requirements. In the related art, a bottom plate with greater thickness is generally used, which not only increases the weight of the battery device, but also increases the manufacturing cost.

[0048] Therefore, the applicant provides a new structure design of battery device. The battery device comprises a box body and a battery module. The box body comprises a bottom plate and a frame arranged on the bottom plate. The bottom plate and the frame cooperate to form an accommodation groove for placing the battery module. The frame is provided with a supporting piece extending towards the accommodation groove on one side close to the bottom plate. The supporting piece and the bottom plate are arranged in layers, and the supporting piece and the bottom plate jointly bear the battery module. The battery device has the advantage of being able to reduce the thickness of the bottom plate.

[0049] Please refer to Figure 1 , Figure 1A structural schematic diagram of a vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be an electric device, which can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid electric vehicle, or a range extended electric vehicle, 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 control device 200 and a motor 300, and the control device 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.

[0050] 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.

[0051] Please refer to Figure 2 , Figure 2 A disassembled structural schematic diagram of the battery device 100 is provided for some embodiments of the present application. The battery device 100 includes a box body 10 and a battery module 20, and the battery module 20 is accommodated in the box body 10. The box body 10 is used to provide an accommodation cavity for the battery module 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include a cover plate 11 and a body 12, and the cover plate 11 and the body 12 are mutually covered to jointly define an accommodation cavity for accommodating the battery module 20. The body 12 can be a hollow structure with one end open, and the cover plate 11 can be a plate structure, which is covered on the open side of the body 12 to jointly define the accommodation cavity with the body 12; or the cover plate 11 and the body 12 can both be hollow structures with one side open, and the open side of the cover plate 11 is covered on the open side of the body 12. Of course, the box body 10 formed by the cover plate 11 and the body 12 can have various shapes, such as a cylinder, a cuboid, etc.

[0052] In the battery device 100, the battery module 20 can be multiple, and the battery module 20 includes multiple battery monomers, which can be connected in series, in parallel or in a mixed manner to form the battery module 20, and multiple battery modules 20 are formed into an integral whole and accommodated in the box body 10. The battery device 100 can further include other structures, for example, the battery device 100 can further include a current combing component for realizing electrical connection between the multiple battery monomers.

[0053] Each battery cell can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0054] With reference to Figure 3 and Figure 4 According to some embodiments of the present application, a battery device 100 is provided, which includes a box body 10 and a battery module 20. The box body 10 includes a bottom plate 1 and a frame 2 arranged on the bottom plate 1. The bottom plate 1 cooperates with the frame 2 to form a containing groove 3 for placing the battery module 20. The frame 2 is provided with a support 4 extending towards the containing groove 3 on the side close to the bottom plate 1. The support 4 is arranged in a stack with the bottom plate 1, and the support 4 and the bottom plate 1 jointly support the battery module 20.

[0055] The box body 10 includes a body 12 and a cover plate 11. The body 12 includes the bottom plate 1 and the frame 2 arranged on the bottom plate 1. The frame 2 is generally a frame body formed by splicing a plurality of beam bodies. The frame 2 is arranged on the bottom plate 1 by riveting, screwing, or welding. The two spliced parts form the containing groove 3. The containing groove 3 is a groove body with an opening. The opening is also the opening of the body 12. The cover plate 11 covers the opening. The battery module 20 is placed in the containing groove 3 from the opening. The number of the containing grooves 3 is not limited in the present application. The number of the containing grooves 3 can be one or at least two, which depends on the structure of the frame 2. For example, with reference to Figure 6 when the frame 2 is a single four-square frame, the containing groove 3 is one; with reference to Figure 4 or Figure 5 when the frame 2 is provided with a beam body structure for separation in the four-square frame, the number of the containing grooves 3 can be two or more. The support 4 can be arranged on any beam body of the frame 2, or on two or more beam bodies of the frame 2. The skilled in the art can arrange the support 4 according to actual needs.

[0056] The frame 2 is arranged on the side of the bottom plate 1 facing the cover plate 11, and the supporting piece 4 is arranged on the side of the frame 2 close to the bottom plate 1 and extends from the frame 2 towards the direction of the accommodating groove 3, and the supporting piece 4 is used to support the bottom of the battery module 20. It should be noted that the battery module 20 can include a plurality of battery cells which are connected together by bonding or other connection methods. The supporting piece 4 is used to support the battery module 20, and the length of the supporting piece 4 extending from the frame 2 to the accommodating groove 3 is limited, and if it is too long, it will undoubtedly increase the manufacturing cost and difficulty. Therefore, the supporting piece 4 is not arranged on the entire bottom of the battery module 20, but is arranged on the bottom of the battery module 20 close to the frame 2. However, since the plurality of battery cells in the battery module 20 are connected together, from the perspective of force, it can be considered that the supporting piece 4 can bear at least part of the gravity of the battery module 20. Furthermore, the supporting piece 4 is connected to the frame 2, so here it is equivalent to sharing part of the gravity of the battery module 20 to the frame 2. In this way, by supporting the bottom of the battery module 20 through the supporting piece 4, the pressure of the battery module 20 on the bottom plate 1 can be shared, thereby the thickness of the bottom plate 1 can be reduced without increasing the thickness of the bottom plate 1 in the case of a large number or heavy weight of the battery module 20, and the problem of weight increase and cost increase caused by the increase in the thickness of the plate can also be reduced. It should be noted that the stacking arrangement here does not only mean that the supporting piece 4 is completely arranged above the entire bottom plate 1, but can also be arranged above part of the structure of the bottom plate 1. This embodiment is especially suitable for commercial vehicles, and the battery device 100 of the commercial vehicle has a large capacity, and the number of battery modules 20 in the box body 10 is large, and the pressure on the bottom plate 1 is greater.

[0057] By arranging the supporting piece 4 extending towards the accommodating groove 3 on the side of the frame 2 close to the bottom plate 1 to support the bottom of the battery module 20, the supporting piece 4 can bear part of the pressure of the battery module 20 on the bottom plate 1, thereby reducing the requirement for the strength of the bottom plate 1, and the bottom plate 1 can be designed to be thinner, and the manufacturing cost can also be reduced. This embodiment has the advantage of reducing the thickness of the bottom plate 1.

[0058] Referring to Figure 3 and Figure 5 In some embodiments, the frame 2 further includes an outer frame and a middle beam 25 arranged in the outer frame, the two ends of the middle beam 25 are respectively connected to the two opposite sides of the outer frame, the middle beam 25 cooperates with the bottom plate 1 and the outer frame to form at least two accommodating grooves 3, and the outer frame and / or the middle beam 25 is provided with the supporting piece 4.

[0059] The middle beam 25 refers to a beam body arranged in the frame 2, for example, when the frame 2 is a square frame body, the middle beam 25 is arranged in the square frame, and the middle beam 25 divides the frame 2 into a plurality of accommodating spaces 6, and each accommodating space 6 cooperates with the bottom plate 1 to form an accommodating groove 3, so that the number of accommodating grooves 3 is at least two. For example Figure 3As shown in the figure, the number of middle beams 25 is one, and the number of accommodating grooves 3 is two. Those skilled in the art can understand that when the number of middle beams 25 is multiple, multiple accommodating grooves 3 can be arranged, and the arrangement direction, size and shape of the multiple accommodating grooves 3 can be set according to actual needs. The two sides of the middle beam 25 refer to the two sides of the middle beam 25 along the width direction, and the two sides of the middle beam 25 are respectively two accommodating grooves 3, and each accommodating groove 3 is used to place a battery module 20. For the outer frame with a length in a certain direction, the two sides are connected by setting the middle beam 25, which can play a reinforcing role, reduce the risk of bending of the outer frame beam body, and further reduce the risk of deformation of the battery device 100, such as Figure 5 The left beam 24 and the right beam 23 with a relatively long length are connected by the middle beam 25. The middle beam 25 or the outer frame is provided with a supporting piece 4, which means that the supporting piece 4 can be arranged on the middle beam 25, or the supporting piece 4 can be arranged on the outer frame, or the supporting piece 4 can be arranged on both the middle beam 25 and the outer frame. For the box body 10 with a large area of the bottom plate 1, or the battery device 100 with a large number of battery modules 20, for example, the battery device 100 is suitable for commercial vehicles, if only the supporting pieces 4 are arranged on the four sides of the frame 2, the battery modules 20 in the middle part may have a sinking phenomenon, so that the force is concentrated on the bottom plate 1 in the middle part, which may cause the deformation of the bottom plate 1. At this time, the supporting piece 4 can be arranged on the middle beam 25, which increases the supporting point of the battery module 20 and can better support the battery module 20.

[0060] By setting the middle beam 25, the strength of the outer frame can be improved, the risk of bending of the outer frame beam body can be reduced, and the risk of deformation of the battery device 100 can be further reduced. At the same time, by setting the supporting piece 4 on the middle beam 25, the supporting point of the battery module 20 is increased, and the support of the battery module 20 can be better realized.

[0061] Referring to Figure 6 In some embodiments, the outer frame includes a front beam 22 and a rear beam 21 arranged opposite to each other, and a left beam 24 and a right beam 23 respectively connecting the front beam 22 and the rear beam 21, and at least one of the front beam 22, the rear beam 21, the left beam 24 and the right beam 23 is provided with a supporting piece 4.

[0062] Generally, the front beam 22 and the rear beam 21 are arranged relatively parallel and have equal lengths, the left beam 24 and the right beam 23 are arranged relatively parallel and have equal lengths, the front beam 22, the rear beam 21, the left beam 24 and the right beam 23 form a square frame, the square frame cooperates with the bottom plate 1 to form the accommodating groove 3, and the inside of the square frame is the accommodating space 6 constituting the accommodating groove 3, and the battery module 20 is arranged in the accommodating groove 3. The support 4 can be arranged on at least one of the four beam bodies, specifically, the support 4 is arranged on the side of the beam body close to the bottom plate 1, and is used for supporting the bottom of the battery module 20. It should be noted that the beam body in the present application includes the front beam 22, the rear beam 21, the left beam 24 and the right beam 23, and in the embodiment with the middle beam 25, the beam body further includes the middle beam 25. At least one described herein means that one of the four beam bodies can be provided with the support 4, or two of them can be provided with the support 4, or three of them can be provided with the support 4, of course, all four beam bodies can be provided with the support 4. No matter how many supports 4 are arranged, the support 4 is arranged extending towards the accommodating groove 3. Arranging the support 4 on the beam body of the square frame can support the battery module 20 from the outer periphery of the battery module 20, and reduce the occupation of the middle space of the square frame.

[0063] By arranging the support 4 on at least one of the beam bodies of the square frame, the support 4 is used for supporting the bottom of the battery module 20, and the battery module 20 can be supported from the outer periphery of the battery module 20, and the occupation of the middle space of the square frame is reduced.

[0064] In some embodiments, the side of the front beam 22 and the rear beam 21 facing each other is provided with the support 4; and / or, the side of the left beam 24 and the right beam 23 facing each other is provided with the support 4.

[0065] The side of the front beam 22 and the rear beam 21 facing each other is the side of each beam body facing the accommodating groove 3, the support 4 is arranged on the front beam 22 and the rear beam 21, and the height of the support 4 relative to the bottom plate 1 is consistent, so that the supporting positions of the supports 4 are at the same height, and the height consistency of the battery module 20 can be ensured without gluing during manufacturing, and the amount of glue can be reduced. Similarly, the side of the left beam 24 and the right beam 23 facing each other is the side of each beam body facing the accommodating groove 3, the support 4 is arranged on the left beam 24 and the right beam 23, and the height of the support 4 relative to the bottom plate 1 is consistent, which can also reduce the amount of glue.

[0066] By arranging the support 4 on the two beam bodies arranged relatively, the consistency of the supporting height of the two beam bodies is improved, and the battery module 20 does not need to be leveled by gluing, and the amount of glue is reduced.

[0067] Reference Figure 5In some embodiments, the support member 4 is arranged along the inner edge of the outer frame, and / or the support member 4 is arranged along the length direction of the middle beam 25.

[0068] The support member 4 can be a flat strip-shaped member. The inner edge of the outer frame refers to the side of the outer frame facing the accommodation groove 3. Of course, as defined in the foregoing embodiments, the support member 4 is also arranged on the side of the outer frame facing the bottom plate 1. When the outer frame includes the front beam 22, the rear beam 21, the left beam 24, and the right beam 23, the support member 4 is arranged along the extension direction of the respective beam body. When the support member 4 is arranged on the front beam 22, the support member 4 is arranged along the extension direction of the front beam 22. When the support member 4 is arranged on the rear beam 21, the support member 4 is arranged along the extension direction of the rear beam 21. When the support member 4 includes two support members arranged on the front beam 22 and the rear beam 21 respectively, the support member 4 arranged on the front beam 22 is arranged along the extension direction of the front beam 22, and the support member 4 arranged on the rear beam 21 is arranged along the extension direction of the rear beam 21. Of course, the support member 4 can also be arranged on the middle beam 25 and arranged along the length direction of the middle beam 25. In this way, the support member 4 can support the battery module 20 from the outer periphery of the battery module 20, and reduce the occupation of the space in the middle of the accommodation groove 3. The number and position of the support member 4 can be arranged according to actual needs.

[0069] By arranging the support member 4 along the inner edge of the outer frame or along the length direction of the middle beam 25, the support member 4 can support the battery module 20 from the outer periphery of the battery module 20, and reduce the occupation of the space in the middle of the accommodation groove 3.

[0070] In some embodiments, the support member 4 is integrally formed with the frame 2.

[0071] The frame 2 is generally made of aluminum profile, and specifically, the frame 2 is formed by splicing a plurality of beam bodies. The support member 4 integrally formed with the frame 2 described herein refers to that the support member 4 is integrally formed with the corresponding beam body. For example, when the support member 4 is arranged on the front beam 22, the support member 4 arranged on the front beam 22 can be an integral member integrally formed with the front beam 22. In this way, the entire outer frame can support the battery module 20. Integrally forming the support member 4 with the frame 2 can more effectively achieve support, and the manufacturing method is simple.

[0072] By integrally forming the support member 4 with the frame 2, the manufacturing method is simple, which is conducive to reducing the process complexity.

[0073] Referring to Figure 3 , Figure 4 and Figure 8 In some embodiments, the bottom plate 1 is provided with a groove 5, and the support member 4 is arranged in at least part of the groove 5.

[0074] At least part of the support piece 4 here can be partially disposed in the groove 5, or can be completely disposed in the groove 5. In the related art battery device 100, the side of the bottom plate 1 facing the containing groove 3 is generally flat, and no additional groove 5 is provided. In this embodiment of the present application, the support piece 4 is provided on the side of the frame 2 close to the bottom plate 1. Without the groove 5, the support piece 4 would be higher than the surface of the bottom plate 1. Since the support piece 4 is a strip-shaped piece provided on the frame 2, it does not cover the entire bottom plate 1, and in fact, the length of the support piece 4 extending into the containing groove 3 is relatively small. In this way, the support of the support piece 4 to the bottom of the battery module 20 is equivalent to raising the battery module 20, but the bottom of the battery module 20 at the middle position of the containing groove 3 is not supported by the support piece 4, and there is a gap between the bottom plate 1 at the middle position and the battery module 20 at the middle position, and there is a risk of collapse of the battery module 20 at the middle position during use. Moreover, if the battery module 20 at the middle position is suspended, it is equivalent to concentrating the weight of all the battery modules 20 on the frame 2, which is also not a reasonable design. To solve this problem, in some embodiments, a glue layer is provided at the middle position of the bottom plate 1, and the height of the glue layer is substantially the same as the height of the support piece 4, so that the bottom plate 1 and the support piece 4 jointly bear the weight of the battery module 20. However, in this way, a large amount of structural glue is consumed, and the provision of a glue layer with a large area and thickness also increases the amount of glue used, resulting in an increase in manufacturing cost. Therefore, a groove 5 recessed away from the containing groove 3 is provided on the bottom plate 1, and the support piece 4 is disposed in the groove 5, which can reduce the height of the support piece 4 above the upper surface of the bottom plate 1, at least reduce the thickness of the glue layer, thereby reducing the amount of structural glue used and reducing the manufacturing cost.

[0075] By providing the groove 5 for the support piece 4, the height difference between the support piece 4 and the bottom plate 1 can be reduced, the amount of glue used can be reduced, and the manufacturing cost can be reduced.

[0076] In some embodiments, the top surface of the support piece 4 is flush with the side of the bottom plate 1 facing the containing groove 3, and the support piece 4 and the bottom plate 1 jointly support the battery module 20.

[0077] The flush arrangement of the support piece 4 and the bottom plate 1 means that in the height direction of the battery device 100, the heights of the two are the same, and the height direction is as shown in Figure 3The top surface of the support member 4 is flush with the side of the bottom plate 1 facing the accommodating groove 3. In this embodiment, the support member 4 is arranged flush with the bottom plate 1. Specifically, the battery modules 20 around the accommodating groove 3 are directly supported by the support member 4, and the battery modules 20 at the middle position of the accommodating groove 3 are directly supported by the bottom plate 1. In this embodiment, the support member 4 is arranged flush with the bottom plate 1, and no additional adhesive layer is needed to fill the gap between the battery modules 20 at the middle position and the bottom plate 1, thereby reducing the setting of the adhesive and lowering the manufacturing cost.

[0078] By arranging the recess 5 on the bottom plate 1, the support member 4 is arranged in the recess 5, and the top surface of the support member 4 is arranged flush with the side of the bottom plate 1 facing the accommodating groove 3. No additional adhesive layer is needed to pad the battery modules 20, thereby reducing the manufacturing cost.

[0079] In some embodiments, the bottom plate 1 and the support member 4 are welded.

[0080] The support member 4 is generally in the form of a strip, and the welding can be performed by spot welding. The welding connection has high strength, so that the bottom plate 1 and the support member 4 can be integrated and are not easily separated, and can jointly bear the weight of the battery modules 20.

[0081] By welding the bottom plate 1 and the support member 4, the connection strength of the bottom plate 1 and the support member 4 can be improved.

[0082] In some embodiments, the battery device 100 further comprises a fastener connecting the bottom plate 1 and the support member 4. The fastener can be a screw, a bolt, a rivet, or the like.

[0083] Referring to Figure 7 and Figure 8 In some embodiments, the fastener comprises a rivet nut 7 and a nut 8. The beam body is provided with a hollow cavity 27, the rivet nut 7 extends into the hollow cavity 27 from the bottom plate 1, and the nut 8 is sleeved on one end of the rivet nut 7 extending into the hollow cavity 27.

[0084] The beam body herein includes a front beam 22, a rear beam 21, a left beam 24, and a right beam 23, and can further include a middle beam 25. The beam body is generally made of hollow aluminum profile, Figure 7 and Figure 8 The middle beam 25 is internally provided with a hollow cavity 27. The beam body and the bottom plate 1 are connected by the rivet nut 7, and the nut 8 can reduce the risk of dust leakage from the connection between the rivet nut 7 and the beam body.

[0085] By arranging the rivet nut 7, the connection between the bottom plate 1 and the beam body can be achieved in a narrow space.

[0086] According to some embodiments of the present application, the present application provides a battery device 100, comprising a box 10 and a battery module 20, the box 10 comprises a bottom plate 1 and a frame 2 arranged on the bottom plate 1, the bottom plate 1 cooperates with the frame 2 to form a containing groove 3 for placing the battery module 20, the frame 2 is provided with a support 4 extending towards the containing groove 3 at a side close to the bottom plate 1, and the support 4 supports the battery module 20 together with the bottom plate 1. The bottom plate 1 is provided with a groove 5, the support 4 is arranged in the groove 5, and the top surface of the support 4 is flush with the side of the bottom plate 1 facing the containing groove 3. Specifically, the frame 2 comprises an outer frame and a middle beam 25 arranged in the outer frame, the outer frame comprises a front beam 22 and a rear beam 21 arranged oppositely, and a left beam 24 and a right beam 23 respectively connecting the front beam 22 and the rear beam 21, and at least one of the middle beam 25, the front beam 22, the rear beam 21, the left beam 24 and the right beam 23 is provided with the support 4. The support 4 extends along the inner edge of the outer frame, and / or the support 4 extends along the length direction of the middle beam 25.

[0087] According to some embodiments of the present application, the present application provides a power consuming device, the power consuming device comprises a housing and the battery device 100 as described above. The power consuming device herein can be a vehicle 1000. Since the power consuming device comprises all the technical solutions of all the embodiments of the battery device 100 described above, it at least has all the beneficial effects brought by any of the above embodiments, which will not be repeated here. In some specific embodiments, the power consuming device is a commercial vehicle, which needs larger power, and the capacity of the battery device 100 is larger, the number of the battery modules 20 in the box 10 is larger, and the pressure on the bottom plate 1 is particularly large, so the support 4 needs to be arranged to share the pressure on the bottom plate 1. Of course, the power consuming device of the present application is also applicable to the manufacture of a passenger vehicle. The battery device 100 further comprises a rivet nut 7 and a nut 8, the frame 2 comprises a plurality of beam bodies, at least one beam body is provided with a hollow cavity 27, the rivet nut 7 extends from the bottom plate 1 and enters the hollow cavity 27, and the nut 8 is sleeved on one end of the rivet nut 7 extending into the hollow cavity 27.

[0088] The above description is only some optional embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized by, The battery device comprises a box body and a battery module, the box body comprises a bottom plate and a frame arranged on the bottom plate, the bottom plate and the frame cooperate to form a containing groove for placing the battery module, the frame is provided with a support extending towards the containing groove near one side of the bottom plate, the bottom plate is provided with a groove, at least part of the support is arranged in the groove, the support and the bottom plate are arranged in layers, and the support and the bottom plate jointly support the battery module.

2. The battery device of claim 1, wherein The frame comprises an outer frame and a middle beam arranged in the outer frame, two ends of the middle beam are respectively connected with two opposite sides of the outer frame, the middle beam cooperates with the bottom plate and the outer frame to form at least two containing grooves, and the outer frame and / or the middle beam is provided with the support.

3. The battery device of claim 2, wherein, The outer frame comprises a front beam and a rear beam arranged oppositely, and a left beam and a right beam respectively connecting the front beam and the rear beam, and at least one of the front beam, the rear beam, the left beam and the right beam is provided with the support.

4. The battery device according to claim 3, wherein the front beam and the rear beam are provided with the support on the side facing each other; and / or the left beam and the right beam are provided with the support on the side facing each other.

5. The battery device of claim 2, wherein The support arranged on the outer frame extends along the inner edge of the outer frame; The support arranged on the middle beam extends along the length direction of the middle beam.

6. The battery device of claim 3, wherein The outer frame is a square frame, the front beam and the rear beam are arranged in parallel and have equal lengths, and the left beam and the right beam are arranged in parallel and have equal lengths.

7. The battery device according to any one of claims 1 to 5, wherein The support and the frame are integrally formed.

8. The battery device according to any one of claims 1 to 5, wherein The top surface of the support is flush with the side of the bottom plate facing the containing groove, and the support and the bottom plate jointly support the battery module.

9. The battery device according to any one of claims 1 to 5, wherein The bottom plate and the support are welded; and / or The battery device comprises a fastener connecting the bottom plate and the support.

10. An electric device, characterized by The electric equipment comprises the battery device according to any one of claims 1 to 9.

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