Battery device, energy storage system, and power consuming device

Abstract

This application relates to a battery device, energy storage system, and electrical equipment, and pertains to the field of energy storage technology. The battery device of this application includes a battery box and a lifting assembly. The battery box includes a box cover and a support assembly connected together. The lifting assembly includes a lifting member, a first fastener, and a reinforcing member. The lifting member is connected to the box cover via the first fastener, and the reinforcing member, the lifting member, and the support assembly are connected. When a lifting device moves the battery device, the hook of the lifting device is connected to the lifting member. Because both the first fastener and the reinforcing member provide fixation for the lifting member, the lifting member is less likely to detach from the battery box. Furthermore, because the first fastener and the reinforcing member work together to share the load, the likelihood of structural damage such as deformation, cracking, or breakage of the lifting member is relatively low. Consequently, the likelihood of safety accidents during handling is relatively low.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a battery device, energy storage system and electrical equipment. Background Technology

[0002] In related technologies, lifting devices are used to move battery devices during installation or dismantling operations. The lifting structure of the battery device is used to connect to the hook of the lifting device; however, the structural reliability of the lifting structure in these technologies is relatively poor, and the lifting structure is prone to detaching from the battery device, increasing the likelihood of safety accidents. Summary of the Invention

[0003] This application provides a battery device that can reduce the likelihood of safety accidents during the handling of the battery device. The battery device of this application includes a battery box and a lifting assembly. The battery box includes a box cover and a support assembly connected together. The lifting assembly includes a lifting member, a first fastener and a reinforcing member. The lifting member and the box cover are connected by the first fastener. The reinforcing member, the lifting member and the support assembly are connected together.

[0004] When the lifting device moves the battery unit, the hook of the lifting device is connected to the lifting component. Since both the first fastener and the reinforcing member fix the lifting component, it is not easy for the lifting component to detach from the battery box. Also, since the first fastener and the reinforcing member work together to share the load, the possibility of structural damage such as deformation, cracking or breakage of the lifting component is relatively small. Correspondingly, the possibility of safety accidents during transportation is relatively small.

[0005] This application provides an energy storage system, which includes an energy storage converter and a battery device. The energy storage converter and the battery device are electrically connected, and the battery device is the battery device provided in this application.

[0006] This application provides an electrical device, which includes a battery device, and the battery device adopts the battery device provided in this application.

[0007] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1A three-dimensional structural schematic diagram of the battery device provided in this application in some embodiments; Figure 2 for Figure 1 A schematic diagram of the battery device from another stereoscopic perspective; Figure 3 for Figure 1 A schematic diagram of the battery device from a side view. Figure 4 for Figure 3 A cross-sectional view of the battery device along direction DD. Figure 5 for Figure 1 A magnified schematic diagram of part A in the middle section; Figure 6 for Figure 2 A partially enlarged structural diagram of section B; Figure 7 for Figure 3 A magnified schematic diagram of part C in the middle section; Figure 8 for Figure 4 A magnified schematic diagram of a portion of the structure in section E; Figure 9 This is a structural schematic diagram of the lifting component in some embodiments; Figure 10 This is a structural schematic diagram of the reinforcing member in some embodiments; Figure 11 This is a partial cross-sectional structural schematic diagram of the lifting components and reinforcements in some embodiments; Figure 12 A partial cross-sectional structural schematic diagram of the lifting component and the reinforcement with a pull ring in some embodiments; Figure 13 A partial cross-sectional structural schematic diagram of a lifting member and a reinforcing member having a third surface in some embodiments; Figure 14 A partial cross-sectional structural schematic diagram of the reinforcing member and the lifting member having a second through hole and a blind hole in some embodiments; Figure 15 A partial cross-sectional structural schematic diagram of a lifting member having a first recess and a reinforcing member having a first protrusion in some embodiments; Figure 16 This is a schematic diagram of a partial assembly structure of the battery box, lifting assembly, and sealing gasket in some embodiments; Figure 17 This is a partial cross-sectional structural schematic diagram of the first structural beam and the stiffener in some embodiments; Figure 18 This is a structural schematic diagram of the lifting component in some embodiments; Figure 19This is a schematic diagram of a partial assembly structure of the battery box and lifting assembly in some embodiments; Figure 20 A schematic diagram of the assembly structure of the lifting component and the reinforcing member with a third connection structure in some embodiments; Figure 21 This is a schematic diagram of the structure of a reinforcing member with a first reinforcing structure in some embodiments; Figure 22 This is a structural schematic diagram of the lifting component in some other embodiments; Figure 23 This is a structural schematic diagram of a reinforcing member with a second reinforcing structure in some embodiments; Figure 24 Schematic diagrams of the energy storage system provided in this application in some embodiments; Figure 25 This is a schematic diagram of a vehicle in some embodiments.

[0010] Explanation of reference numerals in the attached drawings: 10-Battery assembly, 1-Battery box, 1a-Receiving cavity, 11-Box cover, 111-Cover body, 112-Flanged structure, 12-Support assembly, 121-Frame, 1211-First structural beam, 1211a-Beam bottom wall, 1211b-Allowing groove, 1211c-Second recess, 122-Liquid cooling plate, 2-Lifting assembly, 21-Lifting component, 21a-Hanging hole, 211-First connecting structure, 212-Second connecting structure, 212a-Blind hole, 212b-Second through hole, 212c-First recess, 2121-Step, 2121a-First surface, 2121b-Second surface, 2121c-Third surface, 2122-Notch, 213-Hanging structure. 2131-Root, 2131a-First rounded corner, 2131b-Second rounded corner, 214-First reinforcing structure, 22-First fastener, 221-Fastening screw, 222-Fastening nut, 23-Reinforcing member, 23a-First protrusion, 23b-Second protrusion, 23c-Third connecting structure, 23d-Fourth connecting structure, 23e-Fifth connecting structure, 23f-Sixth connecting structure, 23g-Second reinforcing structure, 231-First part, 232-Second part, 2321-First through hole, 233-Third part, 233a-Pull ring, 234-Fourth part, 3-Elevating member, 4-Sealing gasket, 20-Motor, 30-Wheel, 100-Energy storage system, 200-Vehicle. Detailed Implementation

[0011] To better understand the technical solutions of this application, the embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. The terminology used in the embodiments of this application is for the purpose of describing specific embodiments only, and is not intended to limit this application. The singular forms "a," "described," and "the" used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should be understood that the term "and / or" used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship. Furthermore, the ordinal numbers "first," "second," "third," "fourth," "fifth," and "sixth" in this document are used to avoid confusion of constituent elements, and are not necessarily intended to limit the quantity. In the accompanying drawings, each pair of the first direction X, the second direction Y, and the third direction Z can be perpendicular to each other. The fourth direction U can be the reverse of the first direction X, the fifth direction V can be the reverse of the second direction Y, and the sixth direction W can be the reverse of the third direction Z. In the accompanying drawings, the third direction Z and the sixth direction W can be directions parallel to the height direction. It should be understood that when feature a is mentioned as "set on" or "located on" feature b, feature a can be directly set on or located on feature b, or there may be other features c between feature a and feature b. Conversely, when feature a is mentioned as "directly located on" or "directly set on" feature b, it means that there are no other features between feature a and feature b. In the accompanying drawings, dashed lines can schematically represent structural section lines. In this document, fasteners can be structural components that serve a fastening connection, such as screws, bolt assemblies, pins, or rivets.

[0012] This application provides some embodiments of battery devices; please refer to them. Figures 1 to 4 As shown, the battery device 10 includes a battery case 1 and multiple battery cells (not shown). The battery case 1 includes a connected cover 11 and a support assembly 12. A receiving cavity 1a is provided inside the battery case 1, and the battery cells are located within the receiving cavity 1a. The support assembly 12 supports the cover 11 and the battery cells. The receiving cavity 1a is formed by at least the cover 11 and the support assembly 12. The battery device 10 can be electrically connected to an external circuit, and the battery device 10 can store electrical energy and output electrical energy.

[0013] In some embodiments, please refer to Figures 5 to 7As shown, the lifting assembly 2 includes a lifting member 21, a first fastener 22, and a reinforcing member 23. The lifting member 21 is connected to the cover 11 via the first fastener 22, and the lifting member 21 is connected to the support assembly 12 via the reinforcing member 23. The lifting member 21 is fixed relative to the battery box 1. In scenarios where the battery device 10 is installed in an energy storage cabinet (not shown in the figure), or in scenarios where the battery device 10 is removed from the energy storage cabinet, the lifting hook (not shown in the figure) of the lifting device is connected to the lifting member 21, and the lifting device performs the handling operation of the battery device 10. During the handling of the battery device 10 by the lifting device, since both the first fastener 22 and the reinforcing member 23 fix the lifting member 21, the lifting member 21 is not easily detached from the battery box 1. Furthermore, since the first fastener 22 and the reinforcing member 23 share the load together, the possibility of structural damage such as deformation, cracking, or breakage of the lifting member 21 is relatively small. Correspondingly, the possibility of a safety accident during the handling of the battery device 10 by the lifting device is relatively small.

[0014] In some embodiments, the battery device 10 is not limited to being moved into the energy storage cabinet by a lifting device. In other handling scenarios, the first fastener 22 and the reinforcement 23 also serve to fix the lifting component 21 and to share the load.

[0015] In some embodiments, please refer to Figure 8 As shown, the lifting component 21 and the reinforcing component 23 can be snapped together, such as by a snap-fit ​​connection or a press-fit connection, so that the lifting component 21 and the reinforcing component 23 can be quickly disassembled and quickly assembled.

[0016] In some embodiments, the reinforcing member 23 primarily serves to strengthen the structure and share the load with the first fastener 22 when the lifting device is handling the battery unit 10. When the battery unit 10 is in an operational state (e.g., charging or discharging) or not being handled, the need for the reinforcing member 23 is relatively small. After the battery unit 10 is installed in the energy storage cabinet (not shown), the lifting member 21 and the reinforcing member 23 can be separated. The lifting member 21 remains connected to the cabinet cover 11 via the first fastener 22. Then, the limiting structure of the energy storage cabinet (not shown) engages with the lifting member 21 to restrict the movement of the battery unit 10 relative to the energy storage cabinet. During handling of the battery unit 10, the engaging structure of the lifting member 21 is connected to the reinforcing member 23; when the battery unit 10 is installed in the energy storage cabinet, the engaging structure of the lifting member 21 is connected to the limiting structure of the energy storage cabinet. The same engaging structure of the lifting member 21 serves two purposes. Accordingly, the support assembly 12 and the reinforcing member 23 are detachably connected, allowing for both detachment and assembly; alternatively, the support assembly 12 and the reinforcing member 23 are movably connected, allowing the reinforcing member 23, which is movable relative to the support assembly 12, to be moved away from or closer to the lifting member 21. This document will first describe the connection structure between the lifting member 21 and the reinforcing member 23, and then describe the connection structure between the support assembly 12 and the reinforcing member 23.

[0017] In some embodiments, please refer to Figure 8 As shown, the lifting member 21 may include a first surface 2121a and a second surface 2121b, the extending directions of the first surface 2121a and the second surface 2121b intersecting each other. The reinforcing member 23 includes a first part 231 and a second part 232, the first part 231 abutting against the first surface 2121a, and the second surface 2121b supporting the second part 232. The lifting member 21 and the reinforcing member 23 are engaged. The first surface 2121a can provide a relatively large contact area, so that even if the first part 231 has a slight misalignment relative to the lifting member 21, the first part 231 and the first surface 2121a can still reliably contact each other. The second surface 2121b can provide a relatively large contact area, so that the pressure between the lifting member 21 and the reinforcing member 23 is relatively small.

[0018] In some embodiments, please refer to Figure 8 As shown, the normal direction of the first surface 2121a can be the fifth direction V, and the normal direction of the second surface 2121b can be the third direction Z. When the first part 231 abuts against the first surface 2121a and the second surface 2121b supports the second part 232, the motion degree of freedom of the reinforcing member 23 along the second direction Y and the motion degree of freedom along the sixth direction W are restricted by the lifting member 21. Correspondingly, the motion degree of freedom of the lifting member 21 along the third direction Z and the motion degree of freedom along the fifth direction V are restricted by the reinforcing member 23.

[0019] In some embodiments (not shown in the figure), the normal of the first surface and the normal of the second surface may also be two other intersecting directions.

[0020] Understandably, the normal is the direction perpendicular to the geometric plane.

[0021] In some embodiments, at least one edge of the first part 231 may abut against the first surface 2121a, or one surface of the first part 231 may abut against the first surface 2121a. The structure and shape of the first part 231 are not specifically limited.

[0022] In some embodiments, at least one edge of the second part 232 may abut against the second surface 2121b, or one surface of the second part 232 may abut against the second surface 2121b. The structure and shape of the second part 232 are not specifically limited.

[0023] In some embodiments, after the battery device 10 is installed into the energy storage cabinet, the lifting member 21 and the reinforcing member 23 can be disassembled. The lifting member 21 is still connected to the cabinet cover 11 by the first fastener 22. Two different parts of the limiting structure of the energy storage cabinet abut against the first surface 2121a and the second surface 2121b of the lifting member 21, so that the limiting structure of the energy storage cabinet and the lifting member 21 are engaged, thereby restricting the movement of the battery device 10 relative to the energy storage cabinet. The limiting structure of the energy storage cabinet can refer to the first part 231 and the second part 232 of the reinforcing member 23.

[0024] In some embodiments, the first part 231 and the second part 232 are integrally formed, welded, or detachably connected.

[0025] In some embodiments, please refer to Figures 8 to 9 As shown, the first surface 2121a and the second surface 2121b are connected, and at least the first surface 2121a and the second surface 2121b form a step 2121. From another perspective, the step 2121 is a local structure of the lifting component 21, and the step 2121 is engaged with the reinforcing member 23. The step 2121 has relatively high structural strength, providing a more reliable engagement function.

[0026] In some embodiments, please refer to Figures 8 to 9 As shown, the first surface 2121a can be used as the side surface of the step 2121, and the second surface 2121b can be used as the top surface of the step 2121.

[0027] In some embodiments, the first surface 2121a may face the battery cell located inside the battery box 1.

[0028] In some embodiments, after the battery device 10 is installed in the energy storage cabinet, the lifting member 21 and the reinforcing member 23 can be removed. The lifting member 21 is still connected to the cover 11 by the first fastener 22. The limiting structure of the energy storage cabinet is engaged with the step 2121, thereby restricting the movement of the battery device 10 relative to the energy storage cabinet.

[0029] In some embodiments, please refer to Figure 9 As shown, the lifting component 21 may include a notch 2122, and the inner wall surface of the notch 2122 may include a first surface 2121a. When the first part 231 abuts against the first surface 2121a, at least a portion of the structure of the first part 231 is located within the notch 2122. This arrangement has the advantage of relatively high structural compactness. When the reinforcing member 23 is disassembled and assembled, the reinforcing member 23 and the box cover 11 are less likely to have structural interference problems. Correspondingly, the difficulty of disassembly and assembly operations is relatively small.

[0030] In some embodiments, the first surface 2121a is the surface shared by the inner wall surface of the notch 2122 and the step 2121.

[0031] It is understandable that the degree of structural compactness includes: the volume of structure that can be accommodated within a unit volume, or the number of structures that can be accommodated within a unit volume.

[0032] In some embodiments, after the battery device 10 is installed in the energy storage cabinet, the lifting component 21 and the reinforcing component 23 can be disassembled. The lifting component 21 is still connected to the cover 11 by the first fastener 22. The limiting structure of the energy storage cabinet is engaged with the lifting component 21. A part of the limiting structure of the energy storage cabinet is located in the notch 2122. This arrangement has the advantage of relatively high structural compactness. When disassembling and assembling, the limiting structure of the energy storage cabinet and the cover 11 are less likely to have structural interference problems. Accordingly, the difficulty of disassembly and assembly operations is relatively small.

[0033] In some embodiments (not shown in the figures), the lifting member includes a step but not necessarily a notch, the step includes a first surface and a second surface, the extension direction of the first surface and the extension direction of the second surface intersect, the first part of the reinforcing member abuts against the first surface, and the second surface supports the second part of the reinforcing member.

[0034] In some embodiments, please refer to Figure 10As shown, the second part 232 may be provided with a first through hole 2321, and the first part 231 extends outward from the edge of the first through hole 2321. At least the first part 231 and the second part 232 form a barbed hook or a similar barbed hook structure. Even if the forced reinforcing member 23 has a tendency to move along the second direction Y or the forced lifting member 21 has a tendency to move along the fifth direction V, causing the first part 231 to deform and the included angle between the first part 231 and the second part 232 to increase, the first part 231 still reliably abuts against the first surface 2121a. Therefore, this arrangement has the advantage of relatively high reliability of the snap-fit.

[0035] In some embodiments, when the lifting member 21 is engaged with the reinforcing member 23, the end of the first part 231 that is away from the first through hole 2321 abuts against the first surface 2121a.

[0036] In some embodiments, when the lifting member 21 is engaged with the reinforcing member 23, the portion of the first part 231 located outside the first through hole 2321 is also located within the notch 2122 of the lifting member 21.

[0037] In some embodiments, the first through hole 2321 may be a rectangular through hole, a circular through hole, a trapezoidal through hole, or a through hole of other shapes.

[0038] In some embodiments, please refer to Figure 11 As shown, the lifting component 21 and the second part 232 are located around the first part 231. The operable space near the first part 231 is relatively small, and the first part 231 is in an inconvenient position for operation. However, the reinforcing component 23 may also include a third part 233, which is connected to the first part 231 and passes through the first through hole 2321. This allows the operator to manually or with the aid of tools apply force to the third part 233, causing it to pull the first part 231 away from the first surface 2121a, thereby eliminating the snap-fit ​​relationship between the lifting component 21 and the reinforcing component 23 and providing the advantage of quick disassembly. The length of the third part 233 is not specifically limited in this document.

[0039] In some embodiments, the first part 231 and the third part 233 are integrally formed, welded, or detachably connected.

[0040] In some embodiments, please refer to Figure 12 As shown, the third part 233 may include a pull ring 233a. The pull ring 233a is located at the end of the third part 233 away from the first part 231. The pull ring 233a is located outside the first through hole 2321, which makes it convenient for the operator to operate the pull ring 233a by hand to drive the first part 231 away from the first surface 2121a, thereby eliminating the snap-fit ​​between the lifting part 21 and the reinforcing part 23, and has the advantage of quick disassembly.

[0041] In some embodiments (not shown in the figure), the third part can be a T-shaped structure or a near-T-shaped structure, which makes it easier for the operator's hand to grasp the third part so as to pull the first part away from the first surface.

[0042] In some embodiments (not shown in the figure), the second part may not have a first through hole. Both the first part and the second part are sheet-like or plate-like structures. The first part and the second part are connected and inclined relative to each other.

[0043] In some embodiments, the first surface 2121a and the second surface 2121b may not be connected to form a step.

[0044] In some embodiments, please refer to Figure 13 As shown, the first surface 2121a and the second surface 2121b can be spaced apart, and at least a portion of the structure of the second part 232 is located between the first surface 2121a and the second surface 2121b. Even if the second part 232 disengages from the second surface 2121b, the first part 231 still reliably abuts against the first surface 2121a, thus the engagement reliability is relatively high.

[0045] In some embodiments, please refer to Figure 13 As shown, the first surface 2121a and the second surface 2121b can be spaced apart along the third direction Z, and the first surface 2121a can be located above the second surface 2121b.

[0046] In some embodiments, please refer to Figure 13 As shown, the lifting component 21 may include a third surface 2121c, a second surface 2121b, and a third surface 2121c arranged opposite to each other. The third surface 2121c is located between the first surface 2121a and the second surface 2121b. The extension direction of the first surface 2121a intersects the extension direction of the second surface 2121b, and the extension direction of the first surface 2121a intersects the extension direction of the third surface 2121c. The second part 232 is located between the second surface 2121b and the third surface 2121c.

[0047] In some embodiments, please refer to Figure 13 As shown, the first face 2121a and the third face 2121c are connected to form an inverted step 2121.

[0048] In some embodiments, after the battery device 10 is installed in the energy storage cabinet, the lifting member 21 and the reinforcing member 23 can be removed. The lifting member 21 is still connected to the cabinet cover 11 by the first fastener 22, so that the two parts of the limiting structure of the energy storage cabinet respectively abut against the first surface 2121a and the second surface 2121b, or the two parts of the limiting structure of the energy storage cabinet respectively abut against the second surface 2121b and the third surface 2121c, thereby restricting the movement of the battery device 10 relative to the energy storage cabinet.

[0049] In some embodiments, please refer to Figure 14 As shown, the lifting component 21 may include a connected blind hole 212a and a second through hole 212b. The extending direction of the blind hole 212a intersects the extending direction of the second through hole 212b. The inner wall of the second through hole 212b includes a first surface 2121a, and the inner wall of the blind hole 212a includes a second surface 2121b. The first surface 2121a and the second surface 2121b are spaced apart. A first part 231 extends from the blind hole 212a into the second through hole 212b. At least a portion of the structure of the second part 232 is located in the blind hole 212a. The second part 232 is located between the first surface 2121a and the second surface 2121b, so that the lifting component 21 and the reinforcing member 23 can be engaged.

[0050] In some embodiments, please refer to Figure 14 As shown, the blind hole 212a can extend along the second direction Y, and the second through hole 212b can extend along the third direction Z.

[0051] In some embodiments, please refer to Figure 14 As shown, the second through hole 212b can be located above the blind hole 212a, and the first surface 2121a is located above the second surface 2121b. The first part 231 that abuts against the first surface 2121a is located in an easy-to-operate position. The operator can manually or with the help of a tool press the first part 231 located in the second through hole 212b to drive the first part 231 out of the first surface 2121a. The second part 232 can be disengaged from the blind hole 212a, thereby canceling the snap-fit ​​relationship between the lifting part 21 and the reinforcing part 23.

[0052] In some embodiments, the blind hole 212a may also be referred to as the first limiting hole, and the second through hole 212b may also be referred to as the second limiting hole.

[0053] In some embodiments, please refer to Figure 14 As shown, after the battery device 10 is installed in the energy storage cabinet, the lifting component 21 and the reinforcing component 23 can be removed. The lifting component 21 is still connected to the cover 11 through the first fastener 22, so that the blind hole 212a is connected to the limiting structure of the energy storage cabinet, thereby restricting the movement of the battery device 10 relative to the energy storage cabinet.

[0054] In some embodiments, please refer to Figure 14 As shown, when the limiting structure of the energy storage cabinet includes screws, the inner wall surface of the blind hole 212a can be provided with a first thread (not shown in the figure), and the blind hole 212a can be threadedly connected to the limiting structure of the energy storage cabinet.

[0055] In some embodiments, please refer to Figure 14 As shown, when the limiting structure of the energy storage cabinet includes a pin, the blind hole 212a can be interference-fitted with the limiting structure of the energy storage cabinet.

[0056] In some embodiments, please refer to Figure 14 As shown, when the limiting structure of the energy storage cabinet includes a rope, the rope can be sequentially threaded through the blind hole 212a and the second through hole 212b.

[0057] In some embodiments, please refer to Figure 14 As shown, after the battery device 10 is installed in the energy storage cabinet, the lifting component 21 and the reinforcing component 23 can be removed to connect the second through hole 212b with the limiting structure of the energy storage cabinet, thereby restricting the movement of the battery device 10 relative to the energy storage cabinet.

[0058] In some embodiments, please refer to Figure 14 As shown, when the limiting structure of the energy storage cabinet includes screws, the inner wall surface of the second through hole 212b can be provided with a second thread (not shown in the figure), and the second through hole 212b can be threadedly connected to the limiting structure of the energy storage cabinet.

[0059] In some embodiments, please refer to Figure 14 As shown, when the limiting structure of the energy storage cabinet includes a pin, the second through hole 212b can be interference-fitted with the limiting structure of the energy storage cabinet.

[0060] In some embodiments (not shown in the figures), a blind hole can be replaced by a third through hole, the second through hole and the third through hole are connected, the extension direction of the second through hole and the extension direction of the third through hole intersect, the inner wall of the second through hole includes a first surface, the inner wall of the third through hole includes a second surface, at least a portion of the structure of the second part is located in the third through hole, and the first part extends from the third through hole to the first through hole.

[0061] In some embodiments, the material of the first part 231 may be metal, the material of the second part 232 may also be metal, and the connection between the first part 231 and the second part 232 is flexible or elastic.

[0062] In some embodiments, please refer to Figure 15 As shown, the lifting component 21 may include a first recessed portion 212c, and the reinforcing component 23 may include a first protrusion 23a. The first protrusion 23a abuts against the first recessed portion 212c so that the lifting component 21 and the reinforcing component 23 are engaged. This engagement structure achieved through the interlocking of the concave and convex parts has the advantages of quick disassembly and quick assembly.

[0063] In some embodiments (not shown in the figures), the lifting member may include a first protrusion, and the reinforcing member may include a first recess. The first protrusion and the first recess abut against each other to make the lifting member and the reinforcing member snap together. This snap-fit ​​structure achieved by the convex-concave fit has the advantages of quick disassembly and quick assembly.

[0064] In some embodiments (not shown in the figures), the lifting assembly may include a second fastener, and the lifting member and the reinforcing member are connected by the second fastener to fix the lifting member and the reinforcing member in place. The connection structure has a relatively high degree of reliability.

[0065] In some embodiments (not shown in the figures), after the battery device is installed in the energy storage cabinet, the lifting component, the reinforcing component, and the second fastener can be removed. The lifting component is still connected to the cabinet cover by the first fastener, and the lifting component is connected to the limiting structure of the energy storage cabinet by the second fastener, thereby restricting the movement of the battery device relative to the energy storage cabinet.

[0066] In some embodiments, please refer to Figure 8 As shown, the support assembly 12 may include a frame 121 and a liquid cooling plate 122 connected together. The liquid cooling plate 122 is located between the frame 121 and the cover 11. The frame 121 supports the liquid cooling plate 122, and the liquid cooling plate 122 supports the battery cells and the cover 11. The frame 121 may be composed of multiple horizontally and vertically arranged structural beams connected together. The frame 121 has relatively high structural strength, so the liquid cooling plate 122 connected to the frame 121 is not easily deformed. The liquid cooling plate 122 has a flow channel (not shown in the figure) inside, which is used to communicate with a liquid cooling device (not shown in the figure) located outside the battery device 10. The coolant circulates between the liquid cooling plate 122 and the liquid cooling device. The heat generated by the battery cells in the working state is conducted to the coolant through the liquid cooling plate 122, and the coolant then transfers the heat to the liquid cooling device, so that the temperature of the battery cells in the working state is within the normal operating temperature range.

[0067] In some embodiments, the multiple structural beams of frame 121 are welded or detachably connected by fasteners.

[0068] In some embodiments (not shown in the figures), the support assembly may include a tray, which and a cover at least enclose a receiving cavity for accommodating individual battery cells. The tray and the cover are connected, and the receiving cavity is also used to contain coolant. The individual battery cells are immersed in the coolant. From another perspective, the battery device is an immersion liquid-cooled battery device.

[0069] The following description of the battery device 10 will primarily use the example of “support component 12 including a connected frame 121 and liquid cooling plate 122”.

[0070] In some embodiments, please refer to Figure 8 As shown, the cover 11 includes a cover body 111 and a flange structure 112 connected to each other. The cover body 111 serves as the main structure of the cover 11 and covers the battery cells. The flange structure 112 serves as the edge structure of the cover 11.

[0071] In some embodiments, please refer to Figures 5 to 7As shown, the frame 121 includes a first structural beam 1211. The first structural beam 1211 extends along a first direction X.

[0072] In some embodiments, please refer to Figure 8 As shown, the flange structure 112 is located between the lifting component 21 and the first structural beam 1211. The first structural beam 1211 supports the flange structure 112, and the flange structure 112 supports the lifting component 21. The first structural beam 1211, the flange structure 112, and the lifting component 21 are detachably connected by the first fastener 22. The first structural beam 1211 and the flange structure 112 are also detachably connected by other fasteners (such as a fourth fastener, not shown in the figure). Alternatively, the lifting component 21 is not connected to the first structural beam 1211 and the flange structure 112 by the fourth fastener. Because the first structural beam 1211 has relatively high structural strength, the flange structure 112 is less prone to deformation, thus ensuring that the flange structure 112 reliably supports the lifting component 21.

[0073] In some embodiments, the frame 121 includes a second structural beam (not shown in the figure), the extension direction of the first structural beam 1211 intersects the extension direction of the second structural beam, and the first structural beam 1211 is welded to the second structural beam or detachably connected by fasteners.

[0074] In some embodiments, the frame 121 includes two first structural beams 1211 disposed opposite each other in a second direction Y, and at least two second structural beams are located between the two first structural beams 1211.

[0075] In some embodiments, please refer to Figure 8 As shown, the reinforcing member 23 may include a fourth part 234, which is connected to the first structural beam 1211. Because the first structural beam 1211 has relatively high structural strength, it provides reliable anchoring for the reinforcing member 23, thereby reliably restricting the freedom of movement of the lifting component 21. This makes it less likely for the lifting component 21 to detach from the battery box 1, and the possibility of a safety accident is relatively low.

[0076] In some embodiments, please refer to Figure 8As shown, the fourth part 234 is connected to the bottom wall 1211a of the first structural beam 1211. The battery device 10 may also include a shim 3, which is disposed on the bottom wall 1211a. The fourth part 234 has a first thickness H1 in a direction perpendicular to the bottom wall 1211a, and the shim 3 has a second thickness H2 in a direction perpendicular to the bottom wall 1211a. The first thickness H1 is smaller than the second thickness H2, so that the shim 3 protrudes relative to the fourth part 234 in a direction away from the bottom wall 1211a (sixth direction W). When the battery device 10 is installed or removed in the energy storage cabinet, or when the battery device 10 slides into or out of the energy storage cabinet, the shim 3 slides with the mounting bracket of the energy storage cabinet, while the fourth part 234 does not structurally interfere with the mounting bracket, so that the battery device 10 can slide smoothly relative to the mounting bracket, resulting in high efficiency in both installation and removal operations.

[0077] In some embodiments, the bottom wall 1211a of the beam is the part of the first structural beam 1211 that is away from the box cover 11 and the lifting component 21.

[0078] In some embodiments, the direction perpendicular to the bottom wall 1211a of the beam can be the third direction Z or the sixth direction W.

[0079] In some embodiments, the shim 3 may extend along the length direction (e.g., the first direction X) of the first structural beam 1211.

[0080] In some embodiments, the shim 3 may be a sheet-like structure or a plate-like structure.

[0081] In some embodiments, a shim 3 is provided on at least one side of the reinforcing member 23 or the fourth part 234 in the first direction X.

[0082] In some embodiments, the fourth part 234 is located on the side of the bottom wall 1211a of the beam away from the lifting member 21, and the bottom wall 1211a of the beam abuts against the fourth part 234. The first structural beam 1211 restricts the degree of freedom of movement of the reinforcing member 23 in the third direction Z, so that the second part 232 of the reinforcing member 23 reliably presses the second surface 2121b of the lifting member 21, thereby reliably restricting the degree of freedom of movement of the lifting member 21 in the third direction Z.

[0083] In some embodiments, please refer to Figure 8As shown, the lifting component 21 is engaged with the reinforcing component 23, and the bottom wall 1211a of the first structural beam 1211 abuts against the fourth part 234 of the reinforcing component 23. The lifting component 21 and the first structural beam 1211 are detachably connected to the reinforcing component 23. After the battery device 10 is installed in the energy storage cabinet, the reinforcing component 23 can be removed, and then the limiting structure of the energy storage cabinet can be engaged with the lifting component 21, and the limiting structure of the energy storage cabinet can abut against the bottom wall 1211a of the first structural beam 1211, thereby restricting the movement of the battery device 10 relative to the energy storage cabinet. The limiting structure of the energy storage cabinet can be understood by referring to the structure of the reinforcing component 23.

[0084] In some embodiments, please refer to Figure 16 As shown, the first structural beam 1211 may include a relief groove 1211b, which is recessed into the bottom wall 1211a of the beam. At least a portion of the structure of the fourth part 234 is located within the relief groove 1211b. The fourth part 234 is connected to the relief groove 1211b. The fourth part 234 has a third thickness H3 in a direction perpendicular to the bottom wall 1211a of the beam. The relief groove 1211b has a depth S in a direction perpendicular to the bottom wall 1211a of the beam. The third thickness H3 is less than the depth S. The fourth part 234 does not protrude relative to the bottom wall 1211a of the beam in a direction away from the lifting member 21 (sixth direction W). When the battery device 10 is installed or removed in the energy storage cabinet, or when the battery device 10 slides into or out of the energy storage cabinet, the shim 3 slides in cooperation with the mounting bracket of the energy storage cabinet, while the fourth part 234 does not structurally interfere with the mounting bracket, so that the battery device 10 slides smoothly relative to the mounting bracket, and the installation and removal efficiency are both high.

[0085] In some embodiments, the inner wall surface of the clearance groove 1211b may abut against the fourth part 234 to restrict the degree of freedom of movement of the reinforcement 23 along the third direction Z.

[0086] In some embodiments, please refer to Figure 17 As shown, the reinforcing member 23 may include a second protrusion 23b, and the first structural beam 1211 may include a second recess 1211c. The second protrusion 23b abuts against the second recess 1211c to make the reinforcing member 23 and the first structural beam 1211 engage. The first structural beam 1211 restricts the degree of motion of the reinforcing member 23 in the third direction Z and the degree of freedom of motion in the second direction Y. This engaging structure achieved by the concave-convex fit has the advantages of quick disassembly and quick assembly.

[0087] In some embodiments (not shown in the figures), the reinforcing member may include a second recess, and the reinforcing member may include a second protrusion. The second protrusion abuts against the second recess to engage the reinforcing member and the first structural beam. The first structural beam restricts the degree of freedom of movement of the reinforcing member. This engagement structure achieved through the interlocking of the concave and convex parts has the advantages of quick disassembly and quick assembly.

[0088] In some embodiments (not shown in the figures), the hoisting assembly may also include a third fastener, through which the reinforcement is connected to the first structural beam, and the connection structure has a relatively high degree of reliability.

[0089] In some embodiments (not shown in the figures), the reinforcing member and the support assembly can be rotatably connected. The reinforcing member can rotate relative to the support assembly to a first position or a second position. When the reinforcing member is in the first position, it is engaged with the lifting member. When the reinforcing member is in the second position, it is separated from the lifting member, and the limiting structure of the energy storage cabinet can be engaged with the lifting member. Optionally, the first structural beam of the support assembly and the fourth part of the reinforcing member can be rotatably connected via a hinge structure.

[0090] In some embodiments, please refer to Figure 10 As shown, the reinforcing member 23 may include a fourth connecting structure 23d, a fifth connecting structure 23e, and a sixth connecting structure 23f. The fourth connecting structure 23d and the sixth connecting structure 23f are connected via the fifth connecting structure 23e, and the fourth connecting structure 23d and the sixth connecting structure 23f are arranged opposite to each other. The fifth connecting structure 23e is located between the fourth connecting structure 23d and the sixth connecting structure 23f. The fourth connecting structure 23d is connected to the hoisting member 21, and the sixth connecting structure 23f is connected to the support assembly 12.

[0091] In some embodiments, please refer to Figure 10 As shown, from an overall perspective, the shape of the reinforcing member 23 is approximately U-shaped or C-shaped.

[0092] In some embodiments, the hoisting component 21 and Figure 10 The fourth connection structure 23d shown can be snapped on.

[0093] In some embodiments, please refer to Figure 10 As shown, the fourth connection structure 23d may include the first part 231 and the second part 232 mentioned above.

[0094] In some embodiments (not shown in the figures), the fourth connection structure and the lifting component can be connected by a second fastener.

[0095] In some embodiments, the sixth connecting structure 23f and the support component 12 can abut against each other, or the sixth connecting structure 23f and the support component 12 can be snapped together, or the sixth connecting structure 23f and the support component 12 can be connected by a third fastener, or the sixth connecting structure 23f and the support component 12 can be rotatably connected by a hinge structure.

[0096] In some embodiments, please refer to Figure 10 As shown, the sixth connection structure 23f may include the fourth part 234 mentioned above.

[0097] In some embodiments, please refer to Figure 18 As shown, the lifting component 21 may include a first connecting structure 211, a second connecting structure 212, and a hanging structure 213. The first connecting structure 211 is connected to the box cover 11 by a first fastener 22. The second connecting structure 212 is connected to the reinforcing member 23. The hanging structure 213 is used to connect to the hook of the lifting device. The root 2131 of the hanging structure 213 is located between the first connecting structure 211 and the second connecting structure 212. The first connecting structure 211 and the second connecting structure 212 are respectively connected to the root 2131. The first connecting structure 211 and the second connecting structure 212 can share the load together. The possibility of structural damage problems such as deformation, cracking or breakage of the root 2131 is relatively small.

[0098] In some embodiments, please refer to Figure 18 As shown, the lifting component 21 includes two first connecting structures 211, and the hanging structure 213 includes two roots 2131 located between the two first connecting structures 211. A second connecting structure 212 is located between the two roots 2131. The second connecting structure 212 and the two first connecting structures 211 work together to share the load, and the possibility of structural damage such as deformation, cracking, or breakage of any root 2131 is relatively small.

[0099] In some embodiments, please refer to Figure 18 As shown, the two roots 2131 are connected by a second connecting structure 212, and at least the hanging structure 213 and the second connecting structure 212 are connected to form a rectangular frame structure, and the structural strength of the hoisting component 21 is relatively large.

[0100] In some embodiments, please refer to Figure 18 As shown, at least the hooking structure 213 and the second connecting structure 212 enclose and form the hooking hole 21a, through which the hook of the lifting device can pass to connect the hooking structure 213 and the hook.

[0101] In some embodiments, please refer to Figure 9As shown, the second connecting structure 212 may include the first surface 2121a and the second surface 2121b mentioned above, and the second connecting structure 212 is snapped into the reinforcing member 23.

[0102] In some embodiments, please refer to Figure 9 As shown, the second connection structure 212 may include the step 2121 and the notch 2122 mentioned above.

[0103] In some embodiments, please refer to Figure 18 As shown, the root 2131 has a certain length in the third direction Z or in the sixth direction W, which can also be understood as the root 2131 extending in the third direction Z or in the sixth direction W.

[0104] In some embodiments, please refer to Figure 18 As shown, the first connecting structure 211 has a fourth thickness H4 extending in the direction of the root 2131, and the second connecting structure 212 has a fifth thickness H5 extending in the direction of the root 2131, the fifth thickness H5 being greater than the fourth thickness H4. The load that the second connecting structure 212 can bear is greater than the load that the first connecting structure 211 can bear. The first fastener 22 connected to the first connecting structure 211 needs to bear a relatively small load, and the first fastener 22 is not prone to structural damage problems such as deformation, cracking, or breakage. Since the load that the first fastener 22 needs to bear is relatively small, the first fastener 22 and the fourth fastener mentioned above can be fasteners of the same specification, or it can be understood that the first fastener 22 and the fourth fastener are interchangeable. In the maintenance work of the battery device 10, the corresponding disassembly and assembly work efficiency is relatively high.

[0105] In some embodiments, please refer to Figure 18 As shown, the ratio of the fifth thickness H5 to the fourth thickness H4 can be from 1.1 to 3, specifically 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, or 3. The load that the second connecting structure 212 can bear is greater than the load that the first connecting structure 211 can bear, and the size of the hook hole 21a can still meet the needs of hook installation.

[0106] In some embodiments, the ratio of the fifth thickness H5 to the fourth thickness H4 can be from 1.5 to 2, wherein the ratio can specifically be 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, 1.8, 1.85, 1.9, 1.95 or 2.

[0107] In some embodiments, the ratio of the fifth thickness H5 to the fourth thickness H4 can be 2 to 2.5, wherein the ratio can specifically be 2, 2.05, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45 or 2.5.

[0108] In some embodiments, please refer to Figure 18 As shown, the root portion 2131 includes a first rounded corner portion 2131a and a second rounded corner portion 2131b. The first rounded corner portion 2131a is close to and connected to the first connecting structure 211, and the second rounded corner portion 2131b is close to and connected to the second connecting structure 212. The radius of curvature of the first rounded corner portion 2131a is greater than the radius of curvature of the second rounded corner portion 2131b. The stress concentration factor of the first rounded corner portion 2131a is relatively small. Even if the thickness of the first connecting structure 211 is less than the thickness of the second connecting structure 212, structural damage problems such as deformation, cracking or breakage are not likely to occur at the connection between the root portion 2131 and the first connecting structure 211.

[0109] In some embodiments, the ratio of the radius of curvature of the first rounded corner portion 2131a to the radius of curvature of the second rounded corner portion 2131b can be from 1.1 to 3, wherein the ratio can specifically be 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9 or 3.

[0110] In some embodiments, the ratio of the radius of curvature of the first rounded corner portion 2131a to the radius of curvature of the second rounded corner portion 2131b can be 1.5 to 2, wherein the ratio can specifically be 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, 1.8, 1.85, 1.9, 1.95 or 2.

[0111] In some embodiments, the ratio of the radius of curvature of the first rounded corner portion 2131a to the radius of curvature of the second rounded corner portion 2131b can be 2 to 2.5, wherein the ratio can specifically be 2, 2.05, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45 or 2.5.

[0112] In some embodiments (not shown in the figure), the fourth thickness of the first connecting structure is greater than the fifth thickness of the second connecting structure, so that the structural strength of the first connecting structure is relatively large and the first connecting structure is not easily deformed, thereby making the first connecting structure and the box cover reliably connected by the first fastener.

[0113] In some embodiments, the ratio of the fifth thickness to the fourth thickness can be 1.1 to 3, the structural strength of the first connecting structure is relatively large, and the first fastener that the first connecting structure needs to adapt to does not need to be too long. It can also be understood that the first connecting structure can still adapt to a variety of first fasteners.

[0114] In some embodiments, the ratio of the fourth thickness to the fifth thickness can specifically be 1.1, 1.5, 2, 2.5 or 3.

[0115] In some embodiments, please refer to Figure 8 As shown, the battery device 10 may also include a sealing gasket 4, which is located between the cover 11 and the support assembly 12, so that the gap between the cover 11 and the support assembly 12 is sealed by the sealing gasket 4, and foreign objects outside the battery device 10 are not easily allowed to enter the receiving cavity 1a.

[0116] In some embodiments, please refer to Figure 8 As shown, the sealing gasket 4 can be located between the flange structure 112 and the support assembly 12 of the cover 11. The side of the flange structure 112 facing away from the sealing gasket 4 supports the first connecting structure 211 and the second connecting structure 212. The first connecting structure 211, the flange structure 112, and the support assembly 12 are connected by the first fastener 22. Under the tightening action of the first fastener 22, the sealing gasket 4 is clamped by the flange structure 112 and the support assembly 12, thereby making the flange structure 112 and the sealing gasket 4 fit tightly together, and making the support assembly 12 and the sealing gasket 4 fit tightly together. As can be seen from the above, since the reinforcing member 23 restricts the movement of the second connecting structure 212 along the third direction Z, the reinforcing member 23 applies a force along the sixth direction W to the second connecting structure 212, so that the second connecting structure 212 applies a force along the sixth direction W to the flange structure 112, thereby making the flange structure 112 and the sealing gasket 4 in closer contact. Therefore, when the lifting device lifts the battery device 10, the local structure of the flange structure 112 pressed by the lifted part 21 is still in reliable and tight contact with the sealing gasket 4, so that the sealing performance of the battery device 10 is still relatively good.

[0117] From another perspective, if the second connecting structure is not connected to the reinforcing member, or if the lifting component does not have a second connecting structure, when the lifting device lifts the battery device, the root of the hanging structure mainly transmits the load to the first connecting structure. Deformation is likely to occur at the connection between the root and the first connecting structure. The mutual pressure between the local structure of the flange structure located between the two roots and the sealing gasket is relatively small, and gaps are likely to exist between the local structure of the flange structure located between the two roots and the sealing gasket. In the lifting assembly 2, because the second connecting structure 212 is connected to the reinforcing member 23, the local structure of the flange structure 112 located below the lifting component 21 can make closer contact with the sealing gasket 4.

[0118] In some embodiments, please refer to Figure 19 As shown, when the support assembly 12 includes a frame 121 and a liquid cooling plate 122, the edge of the liquid cooling plate 122 and the sealing gasket 4 are located between the flange structure 112 of the cover 11 and the first structural beam 1211 of the frame 121. The sealing gasket 4 is located between the edge of the liquid cooling plate 122 and the flange structure 112, and the edge of the liquid cooling plate 122 is located between the sealing gasket 4 and the first structural beam 1211. Under the fastening force of the first fastener 22, the flange structure 112 and the first structural beam 1211 press against each other, so that the flange structure 112 and the sealing gasket 4 are tightly fitted, and the edge of the liquid cooling plate 122 is tightly fitted with the sealing gasket 4.

[0119] In some embodiments, please refer to Figure 19 As shown, the first fastener 22 can be a bolt assembly. The first fastener 22 includes a fastening screw 221 and a fastening nut 222. The fastening screw 221 passes through the edge of the first connecting structure 211, the flange structure 112, the sealing gasket 4, the liquid cooling plate 122 and the top of the first structural beam 1211. The fastening nut 222 is located in the cavity of the first structural beam 1211 and is threadedly connected to the fastening screw 221.

[0120] In some embodiments, please refer to Figure 20 As shown, the reinforcing member 23 may include a third connecting structure 23c and a fourth connecting structure 23d. The third connecting structure 23c of the reinforcing member 23 is connected to the first connecting structure 211 of the lifting member 21, and the fourth connecting structure 23d of the reinforcing member 23 is connected to the second connecting structure 212 of the lifting member 21. The reinforcing member 23 more reliably restricts the lifting member 21 from detaching from the battery box 1, and the partial structure of the flange structure 112 located below the lifting member 21 makes closer contact with the sealing gasket 4.

[0121] In some embodiments, please refer to Figure 20 As shown, the third connecting structure 23c can abut against the first connecting structure 211. For example, the third connecting structure 23c is located above the first connecting structure 211, the third connecting structure 23c presses against the first connecting structure 211, and the first connecting structure 211 supports the third connecting structure 23c.

[0122] In some embodiments (not shown in the figure), the third connection structure can be snapped into the first connection structure.

[0123] In some embodiments, please refer to Figure 20 As shown, the fourth connecting structure 23d and the second connecting structure 212 can be snapped together. For example, the fourth connecting structure 23d includes the first part 231 and the second part 232 mentioned above, and the second connecting structure 212 includes the first surface 2121a and the second surface 2121b mentioned above.

[0124] In some embodiments, please refer to Figure 20 As shown, the fourth connecting structure 23d can abut against the second connecting structure 212. The fourth connecting structure 23d is located above the second connecting structure 212. The fourth connecting structure 23d presses against the second connecting structure 212, and the second connecting structure 212 supports the fourth connecting structure 23d.

[0125] In some embodiments, please refer to Figure 20 As shown, the lifting component 21 may include two first connecting structures 211 and a second connecting structure 212, with the second connecting structure 212 located between the two first connecting structures 211. Correspondingly, the reinforcing component 23 may include two third connecting structures 23c and a fourth connecting structure 23d, with the fourth connecting structure 23d located between the two third connecting structures 23c.

[0126] In some embodiments, please refer to Figure 20 As shown, the hoisting component 21 may include a fifth connecting structure 23e and a sixth connecting structure 23f connected to each other. The third connecting structure 23c and the fourth connecting structure 23d are respectively connected to the fifth connecting structure 23e, and the third connecting structure 23c and the fourth connecting structure 23d are respectively arranged opposite to the sixth connecting structure 23f.

[0127] In some embodiments, the support component 12 and Figure 20 The sixth connection structure 23f shown can be connected.

[0128] In some embodiments, the first structural beam 1211 and Figure 20 The sixth connection structure 23f shown can be connected.

[0129] In some embodiments, please refer to Figure 21 As shown, the hoisting component 21 may include a first reinforcing structure 214, and the hanging structure 213 and the first connecting structure 211 are also connected through the first reinforcing structure 214, so that the structural strength of the hoisting component 21 is relatively large.

[0130] In some embodiments, please refer to Figure 21 As shown, the root 2131 is connected to the first reinforcing structure 214, and the possibility of structural damage such as deformation, cracking or breakage of the root 2131 is relatively small.

[0131] In some embodiments, the first reinforcing structure 214 may be a plate-like structure.

[0132] In some embodiments, the first reinforcing structure 214 may approximate a triangular plate.

[0133] In some embodiments, please refer to Figure 22As shown, the lifting component 21 includes two second connecting structures 212, and the hanging structure 213 includes two roots 2131 located between the two second connecting structures 212. A first connecting structure 211 is located between the two roots 2131. The first connecting structure 211, the box cover 11, and the support assembly 12 are connected by a first fastener 22, and the second connecting structures 212 are connected to the reinforcing member 23. The first connecting structure 211 and the two second connecting structures 212 work together to share the load, and the possibility of structural damage such as deformation, cracking, or breakage of any root 2131 is relatively low.

[0134] In some embodiments, based on Figure 22 The lifting component 21 shown can be equipped with two reinforcing members 23. One second connecting structure 212 is connected to one of the reinforcing members 23, and the other second connecting structure 212 is connected to the other reinforcing member 23. Both reinforcing members 23 are connected to the support assembly 12, or both reinforcing members 23 are connected to the first structural beam 1211.

[0135] In some embodiments, please refer to Figure 23 As shown, the reinforcing member 23 may further include a second reinforcing structure 23g. The second reinforcing structure 23g is provided at the connection between the fourth connecting structure 23d and the fifth connecting structure 23e, and also at the connection between the fifth connecting structure 23e and the sixth connecting structure 23f. The structural strength at the connection between the fourth connecting structure 23d and the fifth connecting structure 23e is strengthened, and the structural strength at the connection between the fifth connecting structure 23e and the sixth connecting structure 23f is also strengthened. The reinforcing member 23 is less prone to deformation and can reliably share the load.

[0136] In some embodiments, please refer to Figure 23 As shown, the reinforcing member 23 includes two second reinforcing structures 23g, one of which protrudes relative to the connection between the fourth connecting structure 23d and the fifth connecting structure 23e, and the other of which protrudes relative to the connection between the fifth connecting structure 23e and the sixth connecting structure 23f.

[0137] In some embodiments, the second reinforcing structure 23g may be a block structure or a plate structure.

[0138] In some embodiments (not shown in the figures), the lifting component and the reinforcing component are integrally formed, or the lifting component and the reinforcing component are welded together.

[0139] In some embodiments (not shown in the figures), the reinforcement is welded to the support assembly.

[0140] In some embodiments (not shown in the figures), the reinforcement is integrally formed or welded to the first structural beam.

[0141] This application also provides some embodiments of energy storage systems; please refer to them. Figure 24 As shown, the energy storage system 100 may include a plurality of battery devices, wherein the battery devices may employ some of the embodiments of battery device 10 provided in this application as described above.

[0142] In some embodiments, the energy storage system 100 further includes a power conversion system (PCS), through which the battery device 10 can be connected to a power grid or electrical appliance outside the energy storage system 100. The power conversion system converts alternating current (AC) to direct current (DC) so that the battery device 10 can store the DC electrical energy. The battery device 10 outputs DC power, and the power conversion system converts the DC power into AC power required by the power grid or AC power required by the electrical appliance.

[0143] In some embodiments, the energy storage system 100 further includes a battery management system (BMS), which (not shown) can collect operating status information of multiple battery devices 10 and control the operation of multiple battery devices 10.

[0144] In some embodiments, the energy storage system 100 includes an energy storage cabinet, which houses at least two battery devices 10.

[0145] This application provides some embodiments of electrical equipment, which may include a battery device, and the battery device may adopt some of the embodiments of battery device 10 provided in this application as described above.

[0146] In some embodiments, the electrical equipment may be a vehicle, aircraft, ship, charging station, household appliance, commercial appliance, industrial appliance, or electronic device that requires electrical energy.

[0147] In some embodiments, when the electrical equipment is a vehicle, please refer to Figure 25 As shown, the vehicle 200 includes a battery device 10, a motor 20, and wheels 30. The battery device 10 and the motor 20 are electrically connected by a circuit. The motor 20 is connected to the wheels 30 in a transmission manner. When the power is on, the motor 20 can convert the electrical energy output by the battery device 10 into mechanical energy. The drive shaft of the motor 20 drives the wheels 30 to rotate.

[0148] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application, or the scope of this application should be defined by the appended claims.

Claims

1. A battery device, characterized in that, The battery device includes: A battery box, the battery box including a connected cover and a support assembly; A hoisting assembly, comprising a hoisting component, a first fastener, and a reinforcing component, wherein the hoisting component is connected to the box cover via the first fastener, and the hoisting component, the reinforcing component, and the support assembly are connected.

2. The battery device according to claim 1, characterized in that, The lifting component is engaged with the reinforcing component.

3. The battery device according to claim 2, characterized in that, The lifting component includes a first surface and a second surface, the extension direction of the first surface intersects the extension direction of the second surface, and the reinforcing member includes a first part and a second part, the first part abuts against the first surface, and the second surface supports the second part.

4. The battery device according to claim 3, characterized in that, The first surface and the second surface are connected, and at least the first surface and the second surface form a step.

5. The battery device according to claim 3, characterized in that, The second part is provided with a first through hole, and the first part extends outward from the edge of the first through hole.

6. The battery device according to claim 5, characterized in that, The reinforcing member also includes a third part, which is connected to the first part and passes through the first through hole.

7. The battery device according to claim 3, characterized in that, The first surface and the second surface are spaced apart, and at least a portion of the structure of the second part is located between the first surface and the second surface.

8. The battery device according to claim 7, characterized in that, The lifting component includes a connected blind hole and a second through hole, the extension direction of the blind hole and the extension direction of the second through hole intersect, the second through hole includes a first surface, the blind hole includes a second surface, the first part extends from the blind hole into the second through hole, and at least a portion of the structure of the second part is located in the blind hole.

9. The battery device according to claim 2, characterized in that, Either the lifting component or the reinforcing component includes a first protrusion, and the other includes a first recess, wherein the first protrusion abuts against the first recess.

10. The battery device according to claim 1, characterized in that, The lifting assembly includes a second fastener, and the lifting component is connected to the reinforcing component via the second fastener.

11. The battery device according to any one of claims 1 to 10, characterized in that, The support assembly includes a first structural beam, the box cover includes a flange structure located between the lifting component and the first structural beam, and the reinforcing member includes a fourth part connected to the first structural beam.

12. The battery device according to claim 11, characterized in that, The fourth part is connected to the bottom wall of the first structural beam. The battery device also includes a shim, which is disposed on the bottom wall of the first structural beam. The fourth part has a first thickness in a direction perpendicular to the bottom wall of the beam, and the shim has a second thickness in a direction perpendicular to the bottom wall of the beam. The first thickness is less than the second thickness.

13. The battery device according to claim 11, characterized in that, The first structural beam includes a clearance groove recessed into the bottom wall of the first structural beam. At least a portion of the fourth part is located within the clearance groove and is connected to the clearance groove. The fourth part has a third thickness in a direction perpendicular to the bottom wall of the beam, and the clearance groove has a depth in a direction perpendicular to the bottom wall of the beam. The third thickness is less than the depth.

14. The battery device according to any one of claims 1 to 10, characterized in that, The support assembly includes a first structural beam, and the box cover includes a flange structure located between the lifting component and the first structural beam. The reinforcing member and either the first structural beam include a second protrusion, and the other includes a second recess, with the second protrusion abutting against the second recess.

15. The battery device according to any one of claims 1 to 10, characterized in that, The support assembly includes a first structural beam, the box cover includes a flange structure located between the lifting component and the first structural beam, the lifting assembly also includes a third fastener, and the reinforcing member is connected to the first structural beam via the third fastener.

16. The battery device according to any one of claims 1 to 10, characterized in that, The lifting component includes a first connecting structure, a second connecting structure, and a hanging structure. The first connecting structure is connected to the box cover via a first fastener. The second connecting structure is connected to the reinforcing member. The root of the hanging structure is located between the first connecting structure and the second connecting structure. The first connecting structure and the second connecting structure are respectively connected to the root.

17. The battery device according to claim 16, characterized in that, The first connecting structure has a fourth thickness in the extending direction of the root, and the second connecting structure has a fifth thickness in the extending direction of the root, wherein the fifth thickness is greater than the fourth thickness; or, the fourth thickness is greater than the fifth thickness.

18. The battery device according to claim 17, characterized in that, The ratio of the larger of the fifth thickness to the smaller of the fourth thickness is 1.1 to 3.

19. The battery device according to claim 16, characterized in that, The root portion includes a first rounded corner portion and a second rounded corner portion. The first rounded corner portion is close to and connected to the first connecting structure, and the second rounded corner portion is close to and connected to the second connecting structure. The radius of curvature of the first rounded corner portion is greater than the radius of curvature of the second rounded corner portion.

20. The battery device according to claim 16, characterized in that, The battery device further includes a sealing gasket, and the cover includes a flanged structure. The sealing gasket is located between the flanged structure and the support assembly. The side of the flanged structure opposite to the sealing gasket supports the first connecting structure and the second connecting structure. The first connecting structure, the flanged structure, and the support assembly are connected by the first fastener.

21. The battery device according to claim 16, characterized in that, The reinforcing member includes a third connecting structure and a fourth connecting structure. The third connecting structure is connected to the first connecting structure, and the fourth connecting structure is connected to the second connecting structure.

22. The battery device according to claim 16, characterized in that, The hoisting component includes a first reinforcing structure, and the first connecting structure and the hanging structure are also connected through the first reinforcing structure.

23. The battery device according to any one of claims 1 to 10, characterized in that, The reinforcing member includes a fourth connecting structure, a fifth connecting structure, a sixth connecting structure, and a second reinforcing structure. The fourth connecting structure is connected to the hoisting component. The fourth connecting structure and the sixth connecting structure are connected through the fifth connecting structure. The sixth connecting structure is connected to the support component. The second reinforcing structure is provided at the connection between the fourth connecting structure and the fifth connecting structure. The second reinforcing structure is also provided at the connection between the fifth connecting structure and the sixth connecting structure.

24. An energy storage system, characterized in that, The energy storage system includes an energy storage converter and a battery device, the energy storage converter and the battery device being electrically connected, and the battery device being the battery device according to any one of claims 1 to 23.

25. An electrical appliance, characterized in that, The electrical equipment includes a battery device, wherein the battery device is the battery device according to any one of claims 1 to 23.

Images