Battery device and electric appliance

Abstract

The application discloses a battery device and an electric device, and relates to the field of battery production and manufacturing. The battery device comprises a box body and a plurality of battery monomers. The box body comprises a connecting piece, a box body and an upper cover covering the box body. The box body comprises a bottom plate and a frame arranged on the bottom plate. The frame comprises a frame and a cross beam and a longitudinal beam arranged in the frame. The cross beam and the longitudinal beam are arranged in a cross manner to divide the frame into a plurality of accommodating grooves for accommodating the battery monomers. The connecting piece comprises a base body and a first connecting plate and a second connecting plate connected with the base body. The first connecting plate is connected with one side of the cross beam away from the bottom plate. The second connecting plate is connected with one side of the longitudinal beam away from the bottom plate. The base body is connected with the upper cover. The battery device is beneficial to improving the space utilization and improving the volumetric energy density.

Description

TECHNICAL FIELD

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

[0002] In the box of the battery device, the cross beam and the longitudinal beam are connected by welding, and the welding seam occupies the installation space of the battery monomer, resulting in low volumetric energy density of the battery device. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a battery device and a power consumption equipment, which aims to at least improve the technical problem of low volumetric energy density of the battery device.

[0004] According to some embodiments of the present application, the present application provides a battery device, comprising a box and a plurality of battery monomers, the box comprising a connecting piece, a box body and an upper cover covering the box body; the box body comprising a bottom plate and a frame body arranged on the bottom plate, the frame body comprising a frame and a cross beam and a longitudinal beam arranged in the frame, the cross beam and the longitudinal beam are arranged in cross to separate the frame into a plurality of accommodating grooves for accommodating the battery monomers; the connecting piece comprising a base body and a first connecting plate and a second connecting plate connected with the base body respectively, the first connecting plate is connected with the side of the cross beam away from the bottom plate, the second connecting plate is connected with the side of the longitudinal beam away from the bottom plate, and the base body is connected with the upper cover.

[0005] By arranging the connecting piece to connect the cross beam and the longitudinal beam in the battery device, the technical solution of connecting the cross beam and the longitudinal beam by welding in the related art is replaced, and the welding seam is cancelled, which is beneficial to improve the space utilization of the battery device and further improve the volumetric energy density. At the same time, by connecting the base body with the upper cover, it is beneficial to improve the overall structural strength of the battery device.

[0006] In some embodiments, a first connecting hole is arranged on the base body, a second connecting hole corresponding to the position of the first connecting hole is arranged on the upper cover; the box further comprises a locking piece, the locking piece connects the upper cover and the base body through the first connecting hole and the second connecting hole.

[0007] By arranging the first connecting hole on the base body and the second connecting hole on the upper cover, and connecting the upper cover and the base body through the locking piece, the structural strength of the box of the battery device can be further improved.

[0008] In some embodiments, the locking piece comprises a first pull rivet nut and a first bolt, the first pull rivet nut is installed in the first connecting hole, and the first bolt is installed in the first pull rivet nut through the second connecting hole.

[0009] By setting the locking piece to include the first lock washer and the first bolt, it is more suitable for situations where it is difficult to set a threaded structure and the space for installation is limited, and it is beneficial to improve the convenience of connection.

[0010] In some embodiments, the first connecting plate is provided with a first through hole, the cross beam is provided with a first mounting hole at a position corresponding to the first through hole, the second connecting plate is provided with a second through hole, and the longitudinal beam is provided with a second mounting hole at a position corresponding to the second through hole.

[0011] The connecting piece further includes a first fastener and a second fastener, the first fastener connects the first connecting plate and the cross beam through the first through hole and the first mounting hole, and the second fastener connects the second connecting plate and the longitudinal beam through the second through hole and the second mounting hole.

[0012] By adopting the first fastener and the second fastener, the cross beam and the first connecting plate are connected, and the longitudinal beam and the second connecting plate are connected, which is beneficial to improve the connection strength.

[0013] In some embodiments, the first fastener and the second fastener are both rivets.

[0014] By adopting the rivet to connect the first connecting plate and the cross beam, and the second connecting plate and the longitudinal beam, the connection method is convenient and stable, and is not easy to loosen during impact or vibration impact of the battery device, and is suitable for application scenarios where it is inconvenient to set threaded holes.

[0015] In some embodiments, the connecting piece is arranged at the intersection of the cross beam and the longitudinal beam, the number of the first connecting plate and the second connecting plate is both two, and the two first connecting plates and the two second connecting plates are alternately arranged around the outer periphery of the base body.

[0016] By setting the number of the first connecting plate and the second connecting plate to be both two, and alternately arranging them around the base body, the two first connecting plates and the two second connecting plates form a cross shape, which corresponds to the cross shape at the connection position of the cross beam and the longitudinal beam, which is equivalent to setting four connection positions for the connecting piece to connect with the cross beam and the longitudinal beam, and the connection positions are symmetrical to each other, which is beneficial to improve the connection strength of the cross beam and the longitudinal beam.

[0017] In some embodiments, the longitudinal beam is provided with a cavity, and the cavity is provided with a first reinforcing rib,

[0018] The longitudinal beam is provided with a notch, the cross beam includes a connecting portion and two mounting portions respectively connected to both sides of the connecting portion, the connecting portion is mounted in the notch, and the two mounting portions are arranged on opposite sides of the longitudinal beam.

[0019] The cavity is provided with a fixing member, and the fixing member connects the connecting part and the first reinforcing rib.

[0020] By setting the notch on the longitudinal beam and the connecting part on the transverse beam, the interference problem of the transverse beam and the longitudinal beam at the connection is effectively solved. In this connection mode, the transverse beam and the longitudinal beam exist as a whole. If the transverse beam is divided into two sections, the connection strength of the connecting member connecting the transverse beam and the longitudinal beam may be not high, and the transverse beam and the longitudinal beam need to be welded at the side position, so that the welds occupy the space inside the box body, which is not conducive to the improvement of the energy density of the battery device. And by setting the fixing member for connecting the connecting part and the first reinforcing rib, the connection of the transverse beam and the longitudinal beam is more firm, and the fixing member arranged in the cavity does not occupy the installation space of the battery monomer.

[0021] In some embodiments, the connecting part is provided with a second reinforcing rib, and the fixing member includes a second rivet nut and a second bolt, the second rivet nut is installed on the first reinforcing rib, and the second bolt is installed on the second rivet nut in sequence through the second reinforcing rib and the first reinforcing rib.

[0022] By adopting the second rivet nut and the second bolt, the second reinforcing rib is arranged in the connecting part to provide an installation position, which is more suitable for space-limited installation and is conducive to improving the convenience of connection.

[0023] In some embodiments, the second bolt includes a head and a rod, the rod is installed on the second rivet nut in sequence through two second reinforcing ribs and the first reinforcing rib, and the head is arranged at one end of the rod away from the connecting member and abuts against the second reinforcing rib.

[0024] By arranging the head of the second bolt at one end away from the connecting member, the connecting member is arranged at the top end of the transverse beam and the longitudinal beam, and the second bolt is locked from bottom to top. By arranging the head of the second bolt on the second reinforcing rib of the transverse beam, that is, at the position close to the bottom end, the installation space of the connecting member is reduced, which is conducive to reducing the volume of the battery device.

[0025] In some embodiments, the frame includes a front beam, a first side beam, a rear beam and a second side beam connected in sequence, two ends of the transverse beam are connected to the front beam and the rear beam respectively, and two ends of the longitudinal beam are connected to the first side beam and the second side beam respectively.

[0026] By arranging the frame to include four beams connected in sequence, the transverse beam and the longitudinal beam are connected to the two beams arranged opposite to each other, which is conducive to improving the overall structural strength of the frame.

[0027] 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 clearly understood and implemented according to the content of the description, 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

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0029] Figure 1 Structure diagram of a vehicle of some embodiments of the present application;

[0030] Figure 2 Exploded structure diagram of a battery of some embodiments of the present application;

[0031] Figure 3 Part of the three-dimensional structure diagram of a battery device of some embodiments of the present application;

[0032] Figure 4 Structure diagram of a perspective view of Figure 3 ;

[0033] Figure 5 Part of the structure diagram of a battery device of some embodiments of the present application;

[0034] Figure 6 Part of the structure diagram of a beam, a longitudinal beam and a connecting piece of a battery device of some embodiments of the present application;

[0035] Figure 7 Sectional structure diagram of Figure 6 ;

[0036] Figure 8 Part of the structure diagram of Figure 7 ;

[0037] Figure 9 Structure diagram of a beam of a battery device of some embodiments of the present application.

[0038] Explanation of reference numerals:

[0039] 1000, vehicle;

[0040] 100, battery device; 200, controller; 300, motor;

[0041] 10, box body; 11, upper cover; 12, box body;

[0042] 20, battery cell;

[0043] 3, frame; 31, frame; 311, front beam; 312, first side beam; 313, rear beam; 314, second side beam; 32, cross beam; 321, connecting part; 322, mounting part; 323, top of cross beam; 324, notch; 325, second reinforcing rib; 3, longitudinal beam; 331, cavity; 332, first reinforcing rib; 333, top of longitudinal beam; 334, notch; 4, accommodating groove; 5, connecting piece; 51, base body; 52, first connecting plate; 53, second connecting plate; 54, first fastener; 55, second fastener; 61, first pull nut; 7, fixing piece; 71, second pull nut; 72, second bolt; 721, head; 722, shank.

[0044] 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

[0045] 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 part of the embodiments of the present application, rather than 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.

[0046] 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 positional 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.

[0047] 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.

[0048] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, 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 intermediate medium, can be internal connection of two elements or 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.

[0049] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection claimed 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.

[0050] In the present application, the description of "up", "down", "front", "back", "left", "right" and the like is based on the orientation shown in the drawing, and is only used to explain the relative positional relationship between the components in the posture shown in the drawing. If the specific posture changes, the directional indication also changes accordingly.

[0051] At present, from the development of market situation, the application of power battery is more and more extensive. 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, 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.

[0052] With the increasing demand for the miniaturization of battery devices, how to improve the volume energy density of battery devices has always been a problem that the battery industry is committed to break through. For the box body of the battery device, the box body needs to have a frame body and a cross beam and a longitudinal beam arranged in the frame body, and the cross beam and the longitudinal beam are cross connected to divide the frame body into a plurality of accommodating grooves for accommodating battery monomers. These structures are difficult to cancel. The applicant found through careful research that the current connection mode of the cross beam and the longitudinal beam is mostly welding. Welding will form a weld, which will occupy the space of the accommodating groove for installing the battery monomer. At the same time, in order to prevent the weld from interfering with the battery monomer during assembly, a larger gap needs to be reserved between the battery monomer and the cross beam and the longitudinal beam, which leads to low space utilization of the battery device.

[0053] To solve the above problems, the applicant provides a battery device. A connecting piece is arranged in the battery device to connect the cross beam and the longitudinal beam. Specifically, the connecting piece includes a base body and first and second connecting plates connected to the base body respectively. The first connecting plate is connected to one side of the cross beam facing the upper cover, the second connecting plate is connected to one side of the longitudinal beam facing the upper cover, and the base body is connected to the upper cover of the box body of the battery device. The cross beam and the longitudinal beam are connected by the connecting piece, instead of the technical solution of connecting the cross beam and the longitudinal beam by welding in the related art, so that the welding seam is cancelled, which is beneficial to improve the space utilization of the battery device and further improve the volumetric energy density. At the same time, the base body is connected to the upper cover, which is beneficial to improve the overall structural strength of the battery device.

[0054] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 1000 is provided for some embodiments of the present application. The battery device can be the vehicle 1000, and the vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric 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 the 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 power demand of the vehicle 1000 during starting, navigation and driving.

[0055] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0056] Please refer to Figure 2 , Figure 2A schematic diagram of an exploded view of a battery device 100 is provided for some embodiments of the present application. The battery device 100 includes a case 10 and battery cells 20, which are accommodated in the case 10. The case 10 is configured to provide a space for accommodating the battery cells 20, and the case 10 can have various configurations. In some embodiments, the case 10 can include an upper cover 11 and a case body 12, which are coupled to each other to define a space for accommodating the battery cells 20. The case body 12 can have a hollow structure with an open end, and the upper cover 11 can have a plate-like structure. The upper cover 11 is coupled to the open end of the case body 12 to define the space for accommodating the battery cells 20. Alternatively, the upper cover 11 and the case body 12 can each have a hollow structure with an open end, and the open end of the upper cover 11 is coupled to the open end of the case body 12. The case 10 formed by the upper cover 11 and the case body 12 can have various shapes, such as a cylindrical shape or a cuboid shape.

[0057] The battery device 100 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 20 connected in series, in parallel, or in a mixed connection through a busbar.

[0058] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 20.

[0059] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells 20 as a single module. As an example, the battery module can be formed by bundling a plurality of battery cells 20 with a cable tie.

[0060] In some embodiments, the battery device 100 can be a battery pack including a case 10 and one or more battery cell assemblies accommodated in the case 10.

[0061] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the case 10 by fixing the battery module in the case 10.

[0062] As an example, the battery cell assembly can also be accommodated in the case 10 by directly fixing a plurality of battery cells 20 in the case 10.

[0063] In the battery device 100, the battery cells 20 can be multiple, and the multiple battery cells 20 can be connected in series or in parallel or in a mixed manner. The mixed manner means that the multiple battery cells 20 are connected in series and in parallel. The multiple battery cells 20 can be directly connected in series or in parallel or in a mixed manner, and then the multiple battery cells 20 are accommodated in the box body 10. Of course, the battery device 100 can also be that the multiple battery cells 20 are connected in series or in parallel or in a mixed manner to form a battery module, and then the multiple battery modules are connected in series or in parallel or in a mixed manner to form a whole and are accommodated in the box body 10. The battery device 100 can also include other structures, for example, the battery device 100 can also include a current collecting component for realizing the electrical connection between the multiple battery cells 20.

[0064] Each battery cell 20 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 20 can be in the shape of a cylinder, a flat body, a cuboid or other shapes.

[0065] The application provides a battery device 100.

[0066] Reference Figures 3-5 According to some embodiments of the application, the application provides a battery device 100, which includes a box body 10 and multiple battery cells 20. The box body 10 includes a connecting piece 5, a box body 12 and an upper cover 11 covering the box body 12. The box body 12 includes a bottom plate and a frame 3 arranged on the bottom plate. The frame 3 includes a frame 31 and a cross beam 32 and a longitudinal beam 33 arranged in the frame 31. The cross beam 32 and the longitudinal beam 33 are arranged in a cross manner to divide the frame 31 into multiple accommodating grooves 4 for accommodating the battery cells 20. The connecting piece 5 includes a base body 51 and a first connecting plate 52 and a second connecting plate 53 connected with the base body 51 respectively. The first connecting plate 52 is connected with the side of the cross beam 32 away from the bottom plate, the second connecting plate 53 is connected with the side of the longitudinal beam 33 away from the bottom plate, and the base body 51 is connected with the upper cover 11.

[0067] The battery device 100 can be a battery pack. The battery device 100 includes a housing 10 and multiple battery cells 20 disposed within the housing 10. The housing body 12 refers to the bottom part of the housing 10. The housing body 12 includes a bottom plate and a frame 3 disposed on the bottom plate. The bottom plate is the bottom of the housing 10, and the frame 3 is mounted on the bottom plate, which can be welded or connected by threaded parts. The frame 3 includes a frame 31 and a crossbeam 32 and a longitudinal beam 33 disposed within the frame 31. The frame 31 can be a square frame. The crossbeams 32 and longitudinal beams 33 are arranged intersectingly, and can be intersected within the frame 31. The longitudinal beams 33 extend generally along the length direction of the frame 31, and the crossbeams 32 extend generally along the width direction of the frame 31. The crossbeams 32 and longitudinal beams 33 are arranged intersecting at the connection points. Regarding the number of crossbeams 32 and longitudinal beams 33, each can be one, one can be one and the other multiple, or multiple crossbeams 32 and longitudinal beams 33 can be provided. This application does not limit the number of crossbeams 32 and longitudinal beams 33. Figure 3 There is one longitudinal beam 33 and two transverse beams 32. Both transverse beams 32 and longitudinal beams 33 are set inside the frame 31. The two ends of the transverse beam 32 are connected to the two inner sides of the frame 31 opposite to each other, and the two ends of the longitudinal beam 33 are also connected to the other two inner sides of the frame 31 opposite to each other.

[0068] Since the crossbeams 32 and longitudinal beams 33 are intersecting, in related technologies, they are generally connected by welding. This results in weld seams at the connection points. During the design of the battery housing 10 of the battery device 100, to avoid interference between the battery cells 20 and the weld seams, some space needs to be reserved for the weld seams. This leads to low space utilization of the housing, and consequently, low space utilization of the battery device 100. Therefore, the applicant adds a connector 5 to the housing 10 of the battery device 100. Specifically, the connector 5 includes a base 51 and a first connecting plate 52 and a second connecting plate 53 respectively connected to the base 51. The first connecting plate 52 is connected to the side of the crossbeam 32 facing the upper cover 11, and the second connecting plate 53 is connected to the side of the longitudinal beam 33 facing the upper cover 11. (Refer to...) Figure 6 The side of the crossbeam 32 facing the upper cover 11 is the top 323 of the crossbeam, and the side of the longitudinal beam 33 facing the upper cover 11 is the top 333 of the longitudinal beam. A connector 5 is located at the intersection of the crossbeam 32 and the longitudinal beam 33. The first connecting plate 52 of the connector 5 is connected to the top 323 of the crossbeam, and the second connecting plate 53 of the connector 5 is connected to the top 333 of the longitudinal beam. The first connecting plate 52 and the second connecting plate 53 are connected as a whole through the base 51, thus achieving the connection between the crossbeam 32 and the longitudinal beam 33. This connection method using the connector 5 replaces the welding connection method used in related technologies. Furthermore, the base 51 of the connector 5 is also connected to the upper cover 11 of the housing 10, thereby increasing the overall structural strength of the battery device 100.

[0069] By arranging the connecting piece 5 to connect the cross beam 32 and the longitudinal beam 33 in the battery device 100, the welding connection between the cross beam 32 and the longitudinal beam 33 in the prior art is replaced, and the welding seam is cancelled, which is conducive to improving the space utilization of the battery device 100. At the same time, by connecting the base body 51 and the upper cover 11, the overall structural strength of the battery device 100 is improved.

[0070] In some embodiments, the base body 51 is provided with a first connecting hole, and the upper cover 11 is provided with a second connecting hole corresponding to the position of the first connecting hole; the box body 10 further includes a locking piece, and the locking piece connects the upper cover 11 and the base body 51 through the first connecting hole and the second connecting hole.

[0071] Regarding the connection mode of the base body 51 and the upper cover 11, it can be adhesive or clamping, but in order to further improve the structural strength of the box body 10, that is, the overall structural strength of the battery device 100, the locking piece can be used for connection. The locking piece here can be a threaded fastener, such as a bolt connection, a screw connection, a rivet connection or other connection modes. The first connecting hole and the second connecting hole can be through holes, and if a bolt connection or a rivet connection is used, a bolt or a rivet can be directly used, and if a threaded connection mode is used, an internal thread can be arranged on the first connecting hole or the second connecting hole. The upper cover 11 and the base body 51 are connected together by the locking piece passing through the first threaded hole and the second threaded hole in sequence.

[0072] By arranging the first connecting hole on the base body 51 and the second connecting hole on the upper cover 11, and connecting the upper cover 11 and the base body 51 by the locking piece, the structural strength of the box body 10 of the battery device 100 can be further improved.

[0073] Referring to Figure 6 In some embodiments, the locking piece includes a first rivet nut 61 and a first bolt, the first rivet nut 61 is installed in the first connecting hole, and the first bolt is installed in the first rivet nut 61 through the second connecting hole.

[0074] Due to the limitation of the overall volume and weight of the battery device 100, the thickness of the upper cover 11 and the base 51 cannot be too thick. If the thickness is too small, it is not convenient to set a threaded hole on the upper cover 11 or the base 51, and the number of threads is small, which reduces the strength of the connection, so it is difficult to directly use the threaded connection mode. Due to the limitation of the structure and space in the box body 10, it is also relatively difficult to directly install a bolt. Therefore, the form of a pull rivet nut and a bolt can be used. Specifically, the locking member includes a first pull rivet nut 61 and a first bolt. The first pull rivet nut 61 is first installed in the first connecting hole, and then the first bolt is installed in the threaded hole of the first pull rivet nut 61 through the second connecting hole. In this way, the upper cover 11 and the base 51 are installed together under the condition that the material of the upper cover 11 and the base 51 is thin, and the installation structure and space of the box body 10 are limited.

[0075] By setting the locking member to include the first pull rivet nut 61 and the first bolt, it is more suitable for the condition that it is difficult to set a threaded structure and the space installation is limited, and it is beneficial to improve the convenience of connection.

[0076] Reference Figure 6 In some embodiments, the first connecting plate 52 is provided with a first through hole, the cross beam 32 is provided with a first mounting hole at a position corresponding to the first through hole, the second connecting plate 53 is provided with a second through hole, and the longitudinal beam 33 is provided with a second mounting hole at a position corresponding to the second through hole.

[0077] The connecting member 5 further includes a first fastener 54 and a second fastener 55. The first fastener 54 connects the first connecting plate 52 and the cross beam 32 through the first through hole and the first mounting hole. The second fastener 55 connects the second connecting plate 53 and the longitudinal beam 33 through the second through hole and the second mounting hole.

[0078] Herein described is a connection mode of the first connecting plate 52 and the cross beam 32, and the second connecting plate 53 and the longitudinal beam 33, specifically, the first fastener 54 is installed on the first mounting hole of the cross beam 32 through the first through hole, and the second fastener 55 is installed on the second mounting hole of the longitudinal beam 33 through the second through hole. Since the first connecting plate 52 and the second connecting plate 53 are respectively arranged on the top 333 of the cross beam 32 and the longitudinal beam, the first mounting hole and the second mounting hole arranged correspondingly are also respectively arranged on the top 333 of the cross beam 32 and the longitudinal beam, and the first fastener 54 and the second fastener 55 are also fixed from the top 333 of the cross beam 32 and the longitudinal beam, so as not to occupy the space of the accommodating groove 4 on the side vertical surface, and it is not necessary to additionally arrange an avoiding space to facilitate the installation of the battery monomer 20. It should be noted that the number of the first through hole and the second through hole can be multiple, the number of the first mounting hole can be equal to and one-to-one correspond to the number of the first through hole, and the number of the second mounting hole can be equal to and one-to-one correspond to the number of the second through hole. Meanwhile, the number of the first fastener 54 is equal to and one-to-one corresponds to the number of the first mounting hole, and the number of the second fastener 55 is equal to and one-to-one corresponds to the number of the second mounting hole. The fixed connection through multiple first fasteners 54 and second fasteners 55 is conducive to improving the reliability of the connection.

[0079] By adopting the first fastener 54 and the second fastener 55, the cross beam 32 and the first connecting plate 52 are connected, and the longitudinal beam 33 and the second connecting plate 53 are connected, which is conducive to improving the connection strength.

[0080] Referring to Figure 6 In some embodiments, the first fastener 54 and the second fastener 55 are both rivets.

[0081] Regarding specific embodiments of the first fastener 54 and the second fastener 55, the present application does not make specific limitations. For example, the first mounting hole and the second mounting hole can be threaded holes, and the corresponding first fastener 54 and the second fastener 55 can be threaded parts. The threaded part can realize detachable connection, which is convenient for disassembly and maintenance. Of course, the first mounting hole and the second mounting hole can also be holes without threads, and at this time the first fastener 54 and the second fastener 55 can adopt rivets. The rivet connection has good stability, and is especially suitable for the application scenarios in which the cross beam 32 and the longitudinal beam 33 are hollow beams and the wall thickness is small and not suitable for setting threaded holes.

[0082] By adopting the rivet to connect the first connecting plate 52 and the cross beam 32, and the second connecting plate 53 and the longitudinal beam 33, the connection mode is convenient and has good stability, and is not easy to loosen during the impact or vibration impact process of the battery device 100, and is suitable for application scenarios in which it is not convenient to set threaded holes.

[0083] Referring toFigure 5 and Figure 6 In some embodiments, the connecting piece 5 is arranged at the intersection of the cross beam 32 and the longitudinal beam 33, the number of the first connecting plate 52 and the second connecting plate 53 is both two, and the two first connecting plates 52 and the two second connecting plates 53 are alternately and spacedly arranged around the outer periphery of the base body 51.

[0084] Regarding the specific structure of the connecting piece 5, the base body 51 can be a substantially circular plate, and the first connecting plate 52 and the second connecting plate 53 are arranged in a cross shape. Specifically, the number of the first connecting plate 52 and the second connecting plate 53 is both two, and the two first connecting plates 52 and the two second connecting plates 53 are alternately and spacedly arranged around the outer periphery of the base body 51, the two first connecting plates 52 are arranged on the two opposite sides of the base body 51 respectively and the center lines of the two first connecting plates 52 coincide, the two second connecting plates 53 are arranged on the other two opposite sides of the base body 51 respectively and the center lines of the two second connecting plates 53 coincide, and any first connecting plate 52 and any second connecting plate 53 are arranged perpendicularly, at this time, the corresponding cross beam 32 and longitudinal beam 33 are also arranged perpendicularly. The connecting piece 5 is arranged at the intersection of the cross beam 32 and the longitudinal beam 33, and the intersection position of the cross beam 32 and the longitudinal beam 33 is also a cross connection shape, and the cross shape of the two first connecting plates 52 and the two second connecting plates 53 is arranged correspondingly to the cross connection shape of the cross beam 32 and the longitudinal beam 33.

[0085] By arranging the number of the first connecting plate 52 and the second connecting plate 53 to be both two and alternately and spacedly arranging them around the base body 51, the cross shape of the two first connecting plates 52 and the two second connecting plates 53 corresponds to the cross shape of the intersection of the cross beam 32 and the longitudinal beam 33, which is equivalent to arranging four connecting positions of the connecting piece 5 to connect with the four edges of the cross connection shape of the cross beam 32 and the longitudinal beam 33, which is conducive to improving the connection strength of the cross beam 32 and the longitudinal beam 33.

[0086] Referring to Figures 7-9 In some embodiments, the longitudinal beam 33 is provided with a cavity 331, the cavity 331 is provided with a first reinforcing rib 332; the longitudinal beam 33 is provided with a notch 334, the cross beam 32 comprises a connecting portion 321 and two mounting portions 322 respectively connected to the two sides of the connecting portion 321, the connecting portion 321 is mounted in the notch 334, and the two mounting portions 322 are respectively arranged on the opposite sides of the longitudinal beam 33; the cavity 331 is provided with a fixing piece 7, and the fixing piece 7 connects the connecting portion 321 and the first reinforcing rib 332.

[0087] The number of the first reinforcing rib 332 can be arranged as multiple, and each first reinforcing rib 332 extends along a first direction, and the first direction is the extension direction of the longitudinal beam 33. Specifically, the first direction is as shown in Figure 7The actual connection of the connection between the cross beam 32 and the longitudinal beam 33 is described here, which is a specific embodiment of the connection structure of the cross beam 32 and the longitudinal beam 33 at the intersection. In the actual manufacturing of the battery device 100, the cross beam 32 and the longitudinal beam 33 can be hollow. At the same time, in order to provide the strength of the hollow beam, the first reinforcing rib 332 can be arranged in the longitudinal beam. Specifically, the cavity 331 is arranged in the longitudinal beam 33, and the first reinforcing rib 332 is arranged in the cavity 331. The extension direction of the first reinforcing rib 332 is basically consistent with the extension direction of the longitudinal beam 33. The number of first reinforcing ribs 332 can be arranged in multiple, and the multiple first reinforcing ribs 332 are arranged in parallel and spaced apart. At the same time, in order to facilitate the passing of the cross beam 32, a notch 334 can be arranged on the longitudinal beam 33. The cross beam 32 is arranged to include a connecting portion 321 and a mounting portion 322 located on both sides of the connecting portion 321. The size of the connecting portion 321 is designed to be smaller than that of the mounting portion 322. The connecting portion is actually formed by a slot 324 corresponding to the notch 334 arranged on the cross beam 32. During installation, the slot 324 corresponds to the notch 334 to install the connecting portion 321 in the notch 334. The connecting portion 321 is installed in the notch 334, and the two mounting portions 322 are arranged on the opposite sides of the longitudinal beam 33. In combination with the above embodiment, the two first connecting plates 52 are arranged on the top of the two mounting portions 322 and close to one side of the connecting portion 321, and the two second connecting plates 53 are arranged on the top 333 of the longitudinal beam and close to the connecting portion 321. In addition, a fixing member 7 is arranged in the cavity 331 to connect the connecting portion 321 and the first reinforcing rib 332, thereby reducing the possibility of relative movement of the cross beam 32 and the longitudinal beam 33.

[0088] By arranging the notch 334 on the longitudinal beam 33 and the connecting portion 321 arranged in the notch 334 on the cross beam 32, the interference problem of the cross beam 32 and the longitudinal beam 33 at the connection is effectively solved. By using this connection method, the cross beam 32 and the longitudinal beam 33 exist as a whole respectively. If the cross beam 32 is divided into two sections, the connection strength of the cross beam 32 and the longitudinal beam 33 connected by the connecting member 5 may be not high, and the cross beam 32 and the longitudinal beam 33 need to be welded at the side position. The weld generated in this way will occupy the space inside the box 10, which is not conducive to the improvement of the volume energy density of the battery device 100. By arranging the fixing member 7 to connect the connecting portion 321 and the first reinforcing rib 332, the connection of the cross beam 32 and the longitudinal beam 33 is more firm, and the fixing member 7 arranged in the cavity 331 will not occupy the mounting space of the battery monomer 20.

[0089] Reference Figure 7 and Figure 8In some embodiments, the second reinforcing rib 325 is arranged in the connecting portion 321, the fixing member 7 comprises a second rivet nut 71 and a second bolt 72, the second rivet nut 71 is arranged on the first reinforcing rib 332, and the second bolt 72 passes through the second reinforcing rib 325 and the first reinforcing rib 332 in sequence and is arranged in the second rivet nut 71.

[0090] The second reinforcing rib 325 arranged in the connecting portion provides a mounting position for the fixing member. In specific embodiments of the fixing member 7, it can be a threaded fastener, such as a bolt connection, a screw connection, a rivet connection, or other connection modes. However, due to the fact that the first reinforcing rib 332 is generally arranged inside the longitudinal beam 33, it is limited by the internal structure and the mounting space, and therefore the rivet nut and bolt combination can be used. Specifically, the second rivet nut 71 is arranged on the first reinforcing rib 332, the second bolt 72 passes through the second reinforcing rib 325 and the first reinforcing rib 332 in sequence and is arranged in the threaded hole of the second rivet nut 71, and the second reinforcing rib 325 provides a locking surface for the second bolt 72. In this way, the connection of the cross beam 32 and the longitudinal beam 33 at the intersection position is achieved.

[0091] By using the second rivet nut 71 and the second bolt 72, it is more suitable for situations where the installation space is limited, and it is beneficial to improve the convenience of connection.

[0092] Referring to Figure 7 and Figure 8 In some embodiments, the second bolt 72 comprises a head 721 and a rod 722, the rod 722 passes through the second reinforcing rib 325 and the first reinforcing rib 332 in sequence and is arranged in the second rivet nut 71, and the head 721 is arranged at an end of the rod 722 away from the connecting member 5 and abuts against the second reinforcing rib 325.

[0093] The rod 722 refers to the slender part of the second bolt 72, which is provided with external threads connected to the second rivet nut 71, and the head 721 refers to the part arranged at one end of the rod 722, the diameter of the head 721 is larger than that of the rod 722, the head 721 abuts against the second reinforcing rib 325, and the second reinforcing rib 325 provides a mounting surface for the head 721. The second bolt 72 is locked from the bottom up, so the head 721 of the second bolt 72 remains on the second reinforcing rib 325 of the cross beam. The connecting member 5 is arranged at the top 323 of the cross beam and the top 333 of the longitudinal beam. Compared with the case where the head 721 is also arranged at the top 323 of the cross beam and the top 333 of the longitudinal beam, the head 721 of the second bolt 72 arranged at the bottom does not occupy the mounting space of the connecting member 5, which is beneficial to reduce the volume of the battery device 100.

[0094] By setting the head 721 of the second bolt 72 at the end away from the connecting piece 5, the connecting piece 5 is arranged on the top 323 of the cross beam and the top 333 of the longitudinal beam, the second bolt 72 is arranged on the second reinforcing rib 325 of the cross beam, that is, close to the bottom end, and the installation space of the connecting piece 5 is reduced, which is beneficial to reduce the volume of the battery device 100.

[0095] With reference to Figure 3 In some embodiments, the frame 31 comprises a front beam 311, a first side beam 312, a rear beam 313 and a second side beam 314 connected in sequence, the two ends of the cross beam 32 are connected to the front beam 311 and the rear beam 313 respectively, and the two ends of the longitudinal beam 33 are connected to the first side beam 312 and the second side beam 314 respectively.

[0096] The frame 31 can be a square frame formed by the front beam 311, the first side beam 312, the rear beam 313 and the second side beam 314 connected in sequence, the front beam 311 and the rear beam 313 are arranged opposite to each other, the first side beam 312 and the second side beam 314 are arranged opposite to each other, and the cross beam 32 and the longitudinal beam 33 are arranged inside the frame 31 and connected to the inner side of the frame 31. Specifically, the two ends of the cross beam 32 are connected to the front beam 311 and the rear beam 313 respectively, and the two ends of the longitudinal beam 33 are connected to the first side beam 312 and the second side beam 314 respectively, and the specific connection mode can be screw connection, welding or other connection mode.

[0097] By arranging the frame 31 to comprise four beams connected in sequence, the cross beam 32 and the longitudinal beam 33 are connected to two beams arranged opposite to each other, which is beneficial to improve the overall structural strength of the frame 3.

[0098] According to some embodiments of the present application, the present application provides a battery device 100, comprising a box body 10 and a plurality of battery monomers 20, the box body 10 comprises a connecting piece 5, a locking piece, a fixing piece 7, a box body 12 and an upper cover 11 covering the box body 12; the box body 12 comprises a bottom plate and a frame 3 arranged on the bottom plate, the frame 3 comprises a frame 31 and a cross beam 32 and a longitudinal beam 33 arranged in the frame 31, the cross beam 32 and the longitudinal beam 33 are arranged in cross to separate the frame 31 into a plurality of accommodating grooves 4 for accommodating the battery monomers 20; the connecting piece 5 comprises a base body 51, a first connecting plate 52 and a second connecting plate 53 connected with the base body 51 respectively, and a first fastener 54 and a second fastener 55, the base body 51 is provided with a first connecting hole, the upper cover 11 is provided with a second connecting hole corresponding to the position of the first connecting hole; the locking piece comprises a first pull rivet nut 61 and a first bolt, the first pull rivet nut 61 is installed in the first connecting hole, and the first bolt is installed in the first pull rivet nut 61 through the second connecting hole. The number of the first connecting plate 52 and the second connecting plate 53 is two, and the first connecting plate 52 and the second connecting plate 53 are alternately and spacedly arranged around the outer periphery of the base body 51. The first connecting plate 52 is provided with a first through hole, the cross beam 32 is provided with a first mounting hole corresponding to the position of the first through hole, the second connecting plate 53 is provided with a second through hole, and the longitudinal beam 33 is provided with a second mounting hole corresponding to the position of the second through hole; the first fastener 54 connects the first connecting plate 52 and the cross beam 32 through the first through hole and the first mounting hole, and the second fastener 55 connects the second connecting plate 53 and the longitudinal beam 33 through the second through hole and the second mounting hole. The longitudinal beam 33 is provided with a cavity 331, and a plurality of first reinforcing ribs 332 are arranged in the cavity 331, each first reinforcing rib 332 extends along a first direction, and the first direction is the extension direction of the longitudinal beam 33; the longitudinal beam 33 is provided with a notch 334, the cross beam 32 comprises a connecting portion 321 and two mounting portions 322 connected to the two sides of the connecting portion 321 respectively, the connecting portion 321 is installed in the notch 334, and the two mounting portions 322 are respectively arranged on the opposite sides of the longitudinal beam 33. The fixing piece 7 is arranged in the cavity 331, and the fixing piece 7 connects the first reinforcing rib 332 and the connecting portion 321. Specifically, the connecting portion 321 is provided with a second reinforcing rib 325, the fixing piece 7 comprises a second pull rivet nut 71 and a second bolt 72, the second pull rivet nut 71 is installed in the first reinforcing rib 332, the second bolt 72 comprises a head portion 721 and a rod portion 722, the rod portion 722 passes through the second reinforcing rib 325 and the first reinforcing rib 332 in sequence and is installed in the second pull rivet nut 71, the head portion 721 is arranged at one end of the rod portion 722 away from the connecting piece 5 and abuts against the second reinforcing rib 325. The battery device 100 has the advantages of saving internal space, improving the volume energy density of the battery device 100 and high overall structural strength.

[0099] According to some embodiments of the present application, the present application provides a power consuming device, which comprises a device body and the battery device 100 described above, and the battery device 100 is arranged in the device body. The power consuming device can be a vehicle 1000. Since the power consuming device comprises any technical solution of all the embodiments described above, it has at least all the beneficial effects brought by any technical solution described above, which will not be repeated here.

[0100] The above is only optional embodiments of the present application, and does not limit the patent scope of the present application. 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 under the application concept of the present application is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that, It includes a housing and multiple battery cells, the housing including connectors, a housing body and a top cover that covers the housing body; The box body includes a bottom plate and a frame disposed on the bottom plate. The frame includes a side frame and a crossbeam and a longitudinal beam disposed within the side frame. The crossbeam and the longitudinal beam are arranged in a cross pattern to divide the side frame into multiple receiving slots for accommodating the battery cells. The connector includes a base and a first connecting plate and a second connecting plate respectively connected to the base. The first connecting plate is connected to the side of the crossbeam opposite to the bottom plate, and the second connecting plate is connected to the side of the longitudinal beam opposite to the bottom plate. The base is connected to the top cover.

2. The battery device as claimed in claim 1, characterized in that, The base is provided with a first connecting hole, and the top cover is provided with a second connecting hole at the position corresponding to the first connecting hole; The housing also includes a locking component, which connects the top cover and the base through the first connecting hole and the second connecting hole.

3. The battery device as claimed in claim 2, characterized in that, The locking component includes a first rivet nut and a first bolt. The first rivet nut is installed in the first connecting hole, and the first bolt passes through the second connecting hole and is installed in the first rivet nut.

4. The battery device as claimed in claim 1, characterized in that, The first connecting plate is provided with a first through hole, the crossbeam is provided with a first mounting hole corresponding to the position of the first through hole, the second connecting plate is provided with a second through hole, and the longitudinal beam is provided with a second mounting hole corresponding to the position of the second through hole; The connector further includes a first fastener and a second fastener. The first fastener connects the first connecting plate and the crossbeam through the first through hole and the first mounting hole, and the second fastener connects the second connecting plate and the longitudinal beam through the second through hole and the second mounting hole.

5. The battery device as claimed in claim 4, characterized in that, Both the first fastener and the second fastener are rivets.

6. The battery device as claimed in claim 1, characterized in that, The connector is disposed at the intersection of the crossbeam and the longitudinal beam. There are two first connecting plates and two second connecting plates, which are arranged alternately around the outer periphery of the base.

7. The battery device as claimed in claim 1, characterized in that, The longitudinal beam is provided with a cavity, and a first reinforcing rib is provided inside the cavity; The longitudinal beam has a notch, and the crossbeam includes a connecting part and two mounting parts respectively connected to both sides of the connecting part. The connecting part is installed in the notch, and the two mounting parts are located on opposite sides of the longitudinal beam. A fixing member is provided inside the cavity, and the fixing member connects the connecting part and the first reinforcing rib.

8. The battery device as claimed in claim 7, characterized in that, The connecting part is provided with a second reinforcing rib, and the fastener includes a second rivet nut and a second bolt. The second rivet nut is installed on the first reinforcing rib, and the second bolt passes through the second reinforcing rib and the first reinforcing rib in sequence and is installed on the second rivet nut.

9. The battery device as claimed in claim 8, characterized in that, The second bolt includes a head and a shank, the shank passing through the second reinforcing rib and the first reinforcing rib in sequence and being installed on the second rivet nut, the head being located at the end of the shank away from the connector and abutting against the second reinforcing rib.

10. The battery device as claimed in claim 1, characterized in that, The frame includes a front beam, a first side beam, a rear beam, and a second side beam connected end to end in sequence. The two ends of the crossbeam are respectively connected to the front beam and the rear beam, and the two ends of the longitudinal beam are respectively connected to the first side beam and the second side beam.

11. An electrical appliance, characterized in that, The electrical equipment includes a device body and a battery device according to any one of claims 1-10, wherein the battery device is disposed on the device body.

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