Mounting structure of battery pack, battery assembly and energy storage device

Abstract

The application provides a mounting structure of a battery pack, a battery assembly and an energy storage device, and belongs to the technical field of household energy storage systems, wherein the mounting structure comprises a first mounting bracket and a second mounting bracket; the first mounting bracket comprises a fixed sheet, a supporting sheet arranged on the fixed sheet and a limiting sheet arranged on the supporting sheet; the limiting sheet is located on the upper side of the supporting sheet and is spaced apart from the fixed sheet, and forms an insertion slot with an opening facing upward; the second mounting bracket comprises an insertion sheet and a connecting sheet arranged on the insertion sheet; the connecting sheet is used for mounting on the battery pack; and the insertion sheet can be inserted into the insertion slot in the vertical direction. The mounting structure can realize quick disassembly and assembly of the battery pack and the wall, does not need to disassemble the whole mounting structure, and has the advantages of convenient disassembly and assembly and high maintenance efficiency.

Description

Technical Field

[0001] This application belongs to the technical field of residential energy storage systems, and more specifically, relates to a battery pack mounting structure, battery components, and energy storage device. Background Technology

[0002] Energy storage devices are used in power systems to store excess electrical energy and release it during peak load periods to balance power supply and demand and improve the stability of the power system. Currently, energy storage devices used in residential settings often employ a modular design, consisting of a base and multiple battery packs stacked on the base. These devices are typically placed close to a wall. To ensure stability, each battery pack has at least one L-shaped support plate on its wall-facing side, secured with bolts to prevent tipping.

[0003] However, in actual use, the battery pack needs to be disassembled and inspected regularly. When disassembling the battery pack, the entire support plate needs to be removed from the wall. When reinstalling the battery pack, the support plate needs to be fixed back to the wall. This makes the disassembly and reassembly of the battery pack more difficult and affects the efficiency of the user's inspection and maintenance of the battery pack. Utility Model Content

[0004] The purpose of this application is to provide a battery pack mounting structure, battery components, and energy storage device to solve the defects of the prior art where the battery pack is complex and difficult to disassemble when connected to the wall.

[0005] To achieve the above objectives, in a first aspect, this application provides a battery pack mounting structure, comprising:

[0006] The first mounting bracket includes a fixing plate, a support plate disposed on the fixing plate, and a limiting plate disposed on the support plate. The limiting plate is located on the upper side of the support plate and is spaced apart from the fixing plate, forming an upward-facing insertion groove.

[0007] The second mounting bracket includes a plug-in piece and a connecting piece disposed on the plug-in piece. The connecting piece is used to mount on the battery pack, and the plug-in piece can be inserted into the plug-in slot in a vertical direction.

[0008] In some embodiments of the first aspect, the limiting piece includes a first main body and a first curved portion disposed at the top of the first main body, the bottom end of the first main body is connected to the support piece, the first curved portion protrudes from the limiting piece toward the insertion groove, and the distance between the first curved portion and the fixing piece is less than the thickness of the insertion piece.

[0009] In some embodiments of the first aspect, the plug-in includes a second main body portion and a second curved portion disposed on the top of the second main body portion, wherein a limiting groove is formed on the concave side of the second curved portion, and when the plug-in is inserted into the plug-in groove, the convex side of the first curved portion can be embedded in the limiting groove.

[0010] In some embodiments of the first aspect, the limiting piece further includes a guide portion connected to the top end of the first curved portion, and the guide portion extends obliquely from bottom to top in a direction away from the fixing piece.

[0011] In some embodiments of the first aspect, the fixing piece is provided with a first clearance groove, the width of the first clearance groove being greater than or equal to the width of the second curved portion, and after the insertion piece is inserted into the insertion groove, the protruding side of the second curved portion can be embedded in the first clearance groove.

[0012] The connector also includes a limiting portion disposed at the top of the second curved portion. The width of the limiting portion is greater than the width of the first clearance groove, and after the first curved portion is embedded in the limiting groove, it abuts against the surface of the fixing piece facing the connector.

[0013] In some embodiments of the first aspect, a second clearance groove is provided at the bottom end of the second main body. When the plug-in piece is inserted into the plug-in groove, the limiting piece can pass through the second clearance groove from bottom to top, and the inner wall of the top side of the second clearance groove abuts against the upper surface of the support piece.

[0014] In some embodiments of the first aspect, the fixing piece is provided with a first connecting hole, which is a strip-shaped hole extending in a vertical direction.

[0015] Secondly, this application provides a battery pack, comprising:

[0016] The battery pack has a mounting surface;

[0017] At least one mounting structure as described in the first aspect and any embodiment thereof, wherein the connecting piece is mounted on the mounting surface and the plug-in piece is inserted into the plug-in slot.

[0018] In some embodiments of the second aspect, the battery assembly further includes a connecting bolt, the connecting piece having a second connecting hole, the second connecting hole being a strip-shaped hole extending in a horizontal direction, the connecting bolt passing through the second connecting hole and being threadedly connected to the battery pack.

[0019] Thirdly, this application provides an energy storage device, comprising:

[0020] Base;

[0021] Multiple battery components as described in the second aspect and any of the embodiments thereof, wherein the multiple battery components are stacked and connected to the base;

[0022] An inverter, electrically connected to a plurality of the battery modules, is used to convert the direct current output from the battery modules into alternating current and output it to an external load or the power grid, and / or to convert the alternating current output from the power grid into direct current and output it to the battery modules.

[0023] The beneficial effects of the battery pack mounting structure, battery components, and energy storage device provided in this application are as follows: Compared with the prior art, the mounting structure includes a first mounting bracket and a second mounting bracket. The first mounting bracket is used to fix it to the wall, and the second mounting bracket is used to install it on the battery pack. The fixing piece, support piece, and limiting piece of the first mounting bracket form an insertion groove, and the insertion piece of the second mounting bracket can be inserted into the insertion groove to realize the quick installation and removal of the battery pack from the wall without disassembling the entire mounting structure. It has the advantages of convenient installation and removal and high maintenance efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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.

[0025] Figure 1 This is a schematic diagram of the installation structure in the embodiments of this application;

[0026] Figure 2 This is an exploded view of the installation structure in the embodiments of this application;

[0027] Figure 3 This is a cross-sectional view of the installation structure in an embodiment of this application;

[0028] Figure 4 This is an exploded view of the fixing plate being fixed to the wall by expansion bolts in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the battery pack structure in an embodiment of this application;

[0030] Figure 6 This is a partial exploded view of the second mounting bracket installed on the battery pack in an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the energy storage device in the embodiments of this application;

[0032] Figure 8This is an exploded view of the installation process of the energy storage device in the embodiments of this application;

[0033] Figure 9 This is a schematic diagram of the energy storage device installed on one side of a wall in an embodiment of this application.

[0034] The following are the labeling elements in the figure:

[0035] 10-Mounting structure; 20-Wall; 21-Expansion bolt; 22-Baseboard; 30-Battery pack; 31-Outer casing; 311-Mounting groove; 312-Threaded hole; 32-Connecting bolt; 40-Base; 50-Inverter; 100-First mounting bracket; 110-Fixing plate; 1101-First clearance groove; 1102-First connecting hole; 120-Support plate; 130-Limiting plate; 131-First main body; 132-First bending part; 133-Guide part; 140-First reinforcing plate; 200-Second mounting bracket; 210-Plug-in plate; 211-Second main body; 2111-Second clearance groove; 212-Second bending part; 213-Limiting part; 220-Connecting plate; 2201-Second connecting hole; 230-Second reinforcing plate. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] Reference Figures 1-3 In a first aspect, embodiments of this application provide an installation structure 10 for fixing a battery pack 30 to an installation position. The installation structure 10 includes a first mounting bracket 100 and a second mounting bracket 200. The first mounting bracket 100 includes a fixing piece 110, a support piece 120 disposed on the fixing piece 110, and a limiting piece 130 disposed on the support piece 120. The limiting piece 130 is located above the support piece 120 and spaced apart from the fixing piece 110, forming an upward-opening insertion groove. The second mounting bracket 200 includes an insertion piece 210 and a connecting piece 220 disposed on the insertion piece 210. The connecting piece 220 is used to mount on the battery pack 30, and the insertion piece 210 can be vertically inserted into the insertion groove.

[0041] The fixing plate 110 is a plate-like structure used for fixed connection to the installation position. Specifically, it can be a metal sheet fixed to a wall or base by bolts or welding, providing basic support for the entire installation structure 10. The support plate 120 is a plate-like structure extending perpendicularly to the fixing plate 110. It can be integrally formed with the fixing plate 110 or connected by welding, forming the bottom support of the insertion groove together with the limiting plate 130. The limiting plate 130 is a plate-like structure located above the support plate 120. It can be connected to the support plate 120 by bending, and its function is to form lateral constraints on the insertion groove at intervals with the fixing plate 110. The insertion groove is an upward-opening space enclosed by the fixing plate 110, support plate 120, and limiting plate 130. The groove width can be controlled by adjusting the distance between the limiting plate 130 and the fixing plate 110, used to accommodate the insertion piece 210 and limit its horizontal displacement.

[0042] In addition, first reinforcing plates 140 may be provided on both sides of the fixing plate 110 in its width direction. The first reinforcing plate 140 is a structure in which the edge of the fixing plate 110 is bent and protruded towards the second mounting bracket 200, so as to strengthen the structural strength of the fixing plate 110 and improve the stability of use.

[0043] Both the plug-in piece 210 and the connecting piece 220 are plate-shaped structures. They can be integrally formed or separately processed and then fixed by welding or other processes. For example, the plug-in piece 210 and the connecting piece 220 can be L-shaped metal sheets. The connecting piece 220 can be fixed to the side of the battery pack 30 by welding or bolting, fixing the plug-in piece 210 and the battery pack 30 as a whole, so that the plug-in piece 210 moves together with the battery pack 30.

[0044] In addition, a second reinforcing piece 230 may be provided between the plug-in piece 210 and the connecting piece 220. The second reinforcing piece 230 may be inclined and connected between the plug-in piece 210 and the connecting piece 220 by welding or other means to improve the structural strength of the entire second mounting bracket 200.

[0045] Specifically, the fixing piece 110 of the first mounting bracket 100 is pre-fixed in the mounting position, the support piece 120 extends upward to form a vertical support, and the limiting piece 130 extends from the top of the support piece 120 toward the fixing piece 110 but maintains a distance from it, forming an upward-opening insertion slot. The connecting piece 220 of the second mounting bracket 200 is installed on the mounting surface of the battery pack 30, and the insertion piece 210 is inserted vertically into the insertion slot when the battery pack 30 is lowered. The lateral space of the insertion slot is constrained by the limiting piece 130 and the fixing piece 110, preventing the insertion piece 210 from wobbling horizontally. When disassembling the battery pack 30, only the insertion piece 210 needs to be pulled out vertically from the insertion slot, without disassembling the fixing part of the first mounting bracket 100, thus simplifying the operation process.

[0046] In practical use, the first mounting bracket 100 is permanently fixed in the installation position such as the wall 20, while the plug-in piece 210 of the second mounting bracket 200 and the battery pack 30 are detachable parts that can be separated by a vertical plugging and unplugging action, which significantly reduces the time and operation steps required to disassemble and assemble the battery pack 30.

[0047] Through the above technical solution, this application achieves rapid assembly and disassembly of the battery pack 30 from its mounting position. The vertical insertion design of the connector slot and connector piece 210 avoids the bolt tightening operation required for traditional horizontal fixing. During disassembly, only the connector piece 210 needs to be pulled out vertically, without removing the first mounting bracket 100 from the wall 20, thereby reducing the difficulty of assembly and disassembly and improving maintenance efficiency. At the same time, the lateral constraint of the connector slot ensures the stability after installation, preventing horizontal displacement or shaking of the battery pack 30 during use.

[0048] In some embodiments, the limiting piece 130 may include a first main body portion 131 and a first curved portion 132 disposed at the top of the first main body portion 131. The bottom end of the first main body portion 131 is connected to the support piece 120. The first curved portion 132 protrudes from the limiting piece 130 toward the insertion groove, and the distance between the first curved portion 132 and the fixing piece 110 is less than the thickness of the insertion piece 210.

[0049] The first main body 131 is a longitudinally extending rigid structure directly connected to the support plate 120. It can be formed by bending a metal sheet and is fixedly connected to the support plate 120 by welding or integral molding at its bottom end. This provides basic support for the first bent portion 132 and transmits the load of the insertion piece 210. The first bent portion 132 is an arc-shaped structure formed by bending from the top of the first main body 131 towards the inside of the insertion groove. It can be formed by stamping and generates a clamping force on the insertion piece 210 through elastic deformation. When the insertion piece 210 is inserted, the elastic deformation generates a rebound force to form a locking latch.

[0050] Specifically, when the insert piece 210 is inserted vertically into the insertion slot, the first bent portion 132 is elastically deformed outward by the compression of the insert piece 210. At this time, the distance between the first bent portion 132 and the fixing piece 110 is compressed to less than the thickness of the insert piece 210, so that the insert piece 210 needs to overcome the elastic resistance of the first bent portion 132 to complete the insertion. After the insert piece 210 is fully inserted into the insertion slot, the first bent portion 132 rebounds by its own elastic restoring force, and its inner surface forms a surface contact with the outer surface of the insert piece 210, thereby restricting the displacement of the insert piece 210 in both the vertical and horizontal directions.

[0051] The elastic snap-fit ​​structure of the first bent portion 132 enables quick insertion and removal of the connector 210, allowing for independent installation or removal of the connector 210 without removing the support plate 120. Simultaneously, the continuous clamping force generated by the first bent portion 132 suppresses loosening of the connector 210 under vibration, resulting in higher stability. The elastic snap-fit ​​structure allows for a certain degree of deformation while ensuring connection strength, absorbing installation errors and adapting to connectors 210 of different sizes.

[0052] Furthermore, the plug-in piece 210 may include a second main body portion 211 and a second curved portion 212 disposed on the top of the second main body portion 211. A limiting groove is formed on the concave side of the second curved portion 212. When the plug-in piece 210 is inserted into the plug-in groove, the protruding side of the first curved portion 132 can be embedded in the limiting groove.

[0053] The second main body 211 refers to the main load-bearing structure of the insert piece 210, which can be formed by stamping metal sheet and is used to provide longitudinal support. The second curved part 212 is an arc-shaped transition structure located at the top of the second main body 211, which can be processed by bending process with a bending angle of 90 degrees to 120 degrees, and the limiting groove formed on its concave side is used to accommodate the protruding side of the first curved part 132.

[0054] Specifically, when the insert piece 210 is inserted vertically into the insert slot, the recessed space formed by the second curved portion 212 complements the protruding contour of the first curved portion 132. The second main body 211, as the main structure of the insert piece 210, bears the longitudinal load, and the second curved portion 212 provides circumferential constraint to the first curved portion 132 through the limiting groove. Positioning can be completed by insertion in only one direction, and disassembly can be released by simply pulling in the opposite direction.

[0055] Furthermore, the limiting piece 130 may also include a guide portion 133, which is connected to the top end of the first curved portion 132, and the guide portion 133 extends gradually from bottom to top in a direction away from the fixing piece 110.

[0056] The guide portion 133 refers to the extension structure connected to the top of the first curved portion 132, and its tilt angle is set to 30°~60°. This tilted extension structure forms a guide slope during the insertion operation, which can automatically correct the horizontal offset of the insertion piece 210.

[0057] When the connector 210 approaches the connector slot, its tip first contacts the inclined surface of the guide portion 133. As the connector 210 moves downward along the inclined surface under the influence of gravity, the inclination angle of the guide surface forces the connector 210 to undergo horizontal displacement compensation. At this time, the movement path of the connector 210 is gradually corrected until the limiting groove of the second curved portion 212 is completely aligned with the first curved portion 132. During this process, even if there is an initial horizontal deviation, the component force generated after the tip of the connector 210 contacts the guide portion 133 will push the connector 210 into the correct alignment area. This reduces the requirements for operational precision; during the insertion process, the installer only needs to keep the connector 210 roughly aligned with the connector slot, significantly improving the efficiency of battery pack 30 installation and removal.

[0058] In some embodiments, the fixing piece 110 may have a first relief groove 1101, the width of which is greater than or equal to the width of the second curved portion 212. After the insertion piece 210 is inserted into the insertion groove, the protruding side of the second curved portion 212 can be embedded in the first relief groove 1101. The insertion piece 210 also includes a limiting portion 213 disposed at the top of the second curved portion 212. The width of the limiting portion 213 is greater than the width of the first relief groove 1101, and after the first curved portion 132 is embedded in the limiting groove, it abuts against the surface of the fixing piece 110 facing the insertion piece 210.

[0059] The first clearance groove 1101 is a groove structure formed on the fixing piece 110. Specifically, it can be formed by stamping to create a laterally extending rectangular groove at the corresponding position on the fixing piece 110. Its width matches the lateral dimension of the second curved portion 212, and it is used to accommodate the protruding part of the second curved portion 212 when the insertion piece 210 is inserted. The limiting portion 213 is a lateral protrusion structure located at the top of the second curved portion 212. It can be formed by cutting a metal sheet into a preset shape and then bending it to form the entire insertion piece 210. It protrudes on both sides of the top of the fixing piece 110 to form a T-shaped structure. Its lateral width exceeds the width of the first clearance groove 1101, so that the insertion piece 210 can form a surface contact with the surface of the fixing piece 110 after it is inserted into place.

[0060] When the connector 210 is vertically inserted into the connector slot, the second curved portion 212 moves with the connector 210 to the position of the first clearance slot 1101. The protruding side of the second curved portion 212 is embedded inside the first clearance slot 1101, thereby eliminating the lateral interference resistance between the connector 210 and the fixing piece 110, making the insertion operation smoother. After the connector 210 is fully inserted, the limiting portion 213 cannot enter the slot because its width exceeds the first clearance slot 1101. At this time, the bottom surface of the limiting portion 213 presses against the surface of the fixing piece 110 facing the connector 210, forming a vertical limiting block to prevent the connector 210 from coming out of the connector slot when subjected to external force. At the same time, after the first curved portion 132 is embedded in the limiting slot, it applies pressure to the connector 210 in the direction of the fixing piece 110, so that the limiting portion 213 and the surface of the fixing piece 110 are in close contact, enhancing the connection stability.

[0061] In some embodiments, a second clearance groove 2111 is provided at the bottom end of the second main body 211. When the plug-in piece 210 is inserted into the plug-in groove, the limiting piece 130 can pass through the second clearance groove 2111 from bottom to top, and the top inner wall of the second clearance groove 2111 abuts against the upper surface of the support piece 120.

[0062] The second clearance groove 2111 refers to a groove structure located at the bottom end of the connector 210, which can be formed into a downward-facing U-shaped groove using stamping or cutting processes. The second clearance groove 2111 allows the limiting piece 130 to pass vertically during insertion, preventing mechanical interference between the bottom end of the connector 210 and the limiting piece 130. The second clearance groove 2111 eliminates the risk of interference during insertion and automatically positions the insertion depth through the contact relationship between the top inner wall and the support piece 120. This completely eliminates structural interference between the limiting piece 130 and the connector 210 during insertion, ensuring the insertion is completed in one step. Simultaneously, the contact relationship between the top inner wall and the support piece 120 automatically constrains the insertion depth, preventing loosening or positioning deviations due to excessive or insufficient insertion, significantly improving the smoothness and reliability of the battery pack 30 installation and removal operations.

[0063] Reference Figure 4 In some embodiments, the fixing plate 110 may have a first connecting hole 1102, which is a strip-shaped hole extending in the vertical direction. This allows the first mounting bracket 100 to be fixed to the surface of the wall 20 using fasteners such as expansion bolts 21.

[0064] The first connecting hole 1102 is a mounting hole on the fixing plate 110 for connection with the wall. It can be formed as a through hole using a stamping process, with its length direction aligned with the vertical direction. The shape of the strip-shaped hole allows the expansion bolt 21 to move within a certain range in the vertical direction, thus providing space for position adjustment during installation. The strip-shaped hole extending vertically refers to a hole whose length direction is parallel to the vertical direction; it can be rectangular or elliptical in shape, with its length dimension greater than the bolt diameter. This allows the mounting bracket to move vertically up and down during fixing, accommodating the stacking requirements of battery packs 30 at different heights.

[0065] Reference Figure 5 and Figure 6 Secondly, this application further proposes a battery assembly, including a battery pack 30 having a mounting surface, and at least one mounting structure 10 as described in the first aspect embodiment. A connecting piece 220 of the mounting structure 10 is mounted on the mounting surface, and a plug-in piece 210 is inserted vertically into a plug-in slot for fixation.

[0066] The mounting surface refers to the planar area on the battery pack 30 for fixing the mounting structure 10. Specifically, it can be implemented using a flat metal plate or plastic shell, providing a stable support base for the connecting piece 220. In this embodiment, the battery pack 30 includes a shell 31 and battery cells (not shown in the figure) built into the shell 31. The upper surface of the shell 31 has a mounting groove 311 for accommodating the connecting piece 220. The depth of the mounting groove 311 is greater than the thickness of the connecting piece 220, and the bottom surface of the mounting groove 311 is the mounting surface. When the connecting piece 220 is connected to the battery pack 30, it can be completely embedded in the mounting groove 311, ensuring that the upper surface of the connecting piece 220 is not higher than the upper surface of the battery pack 30, thus avoiding interference with the connection of the battery pack 30.

[0067] The connecting piece 220 can be fixed to the surface of the battery pack 30 by welding, bolting, or snap-fitting. In one example, the battery assembly also includes a connecting bolt 32. The connecting piece 220 has a second connecting hole 2201, which is a horizontally extending strip-shaped hole. The connecting bolt 32 passes through the second connecting hole 2201 and is threadedly connected to the battery pack 30. Specifically, the bottom surface of the mounting groove 311 may have a threaded hole 312. After the connecting piece 220 is placed into the mounting groove 311, the position of the second connecting hole 2201 is aligned with the position of the threaded hole 312, so that the connecting bolt 32 can be screwed into the threaded hole 312 after passing through the second connecting hole 2201, thereby achieving the connection and fixation between the connecting piece 220 and the battery pack 30.

[0068] The second connection hole 2201 is provided so that when installing the battery pack 30, the connection position of the second mounting bracket 200 on the battery pack 30 can be adjusted by rotating the connecting bolt 32 appropriately according to the distance between the battery pack 30 and the wall 20, so that the second mounting bracket 200 can be accurately inserted into the first mounting bracket 100.

[0069] During installation, the fixing piece 110 in the first mounting bracket 100 is first fixed to the installation position (such as the surface of the wall 20) by fasteners such as expansion bolts 21. The second mounting bracket 200 is pre-fixed to the mounting surface of the battery pack 30 by the connecting piece 220, forming an integral structure. When installing the battery pack 30, the plug-in piece 210 is inserted vertically into the plug-in slot until the plug-in piece 210 is fully engaged with the plug-in slot. The vertical insertion path of the plug-in piece 210 and the plug-in slot avoids the spatial limitations of traditional horizontal bolt fixing, allowing the battery pack 30 to be positioned directly in the vertical direction. During disassembly, the battery pack 30 can be separated simply by pulling out the plug-in piece 210 in the reverse direction, without any adjustment to the installation position. This achieves a stable connection between the battery pack 30 and the wall 20, and also makes the installation and removal of the battery pack 30 more convenient.

[0070] Reference Figures 7-9Thirdly, this application further proposes an energy storage device, including a base 40, a plurality of battery modules as described in the second aspect embodiment, and an inverter 50. The plurality of battery modules are stacked on the base 40, and the inverter 50 is electrically connected to the plurality of battery modules for converting the direct current output from the battery modules into alternating current and outputting it to an external load or the power grid, and / or converting the alternating current output from the power grid into direct current and outputting it to the battery modules.

[0071] The base 40 refers to the basic structure supporting the battery assembly, which can be implemented using a metal frame or injection-molded plate to provide a stable supporting plane. The battery assembly refers to a combined unit including the battery pack 30 and the mounting structure 10, which is connected to the base 40 through the vertical insertion of the insertion slot and the insertion piece 210, thus forming a stacked structure. The inverter 50 refers to a power conversion module, which can be implemented using a bidirectional inverter circuit to achieve bidirectional conversion between DC and AC power, ensuring the electrical energy exchange between the energy storage device and the grid or load. Stacking connection refers to the vertically stacked arrangement of the battery assemblies, which is achieved through the cooperation of the insertion piece 210 and the insertion slot to realize the physical connection and electrical series connection between upper and lower battery assemblies.

[0072] Specifically, the battery modules are quickly installed or removed from the base 40 via a vertical insertion and removal method using the connector 210 and connector slot. When maintenance is required, the battery modules can be directly pulled out vertically without removing the support structure fixed to the base 40. The electrical connection between the inverter 50 and the battery modules uses centralized wiring. The outputs of multiple stacked battery modules are connected to the inverter 50 in parallel or series to ensure efficient power conversion. The base 40 serves as a unified support platform, and the stacking method allows multiple battery modules to form a compact overall structure, avoiding the low space utilization problem caused by independent installation.

[0073] During the assembly of the energy storage device, the energy storage device can be positioned close to the wall 20. When a baseboard 22 is provided at the bottom of the wall 20, the base 40 can rest against the surface of the baseboard 22. The connection position between the second mounting bracket 200 and the battery pack 30 can be adjusted according to the thickness of the baseboard 22. As the battery packs 30 are stacked one by one on the base 40, the second mounting bracket 200 can accurately connect and cooperate with the first mounting bracket 100 to fix and limit the battery packs 30, thereby stabilizing the position of the entire energy storage device.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery pack mounting structure for fixing the battery pack in a mounting position, characterized in that, The mounting structure includes: The first mounting bracket includes a fixing plate, a support plate disposed on the fixing plate, and a limiting plate disposed on the support plate. The limiting plate is located on the upper side of the support plate and is spaced apart from the fixing plate, forming an upward-facing insertion groove. The second mounting bracket includes a plug-in piece and a connecting piece disposed on the plug-in piece. The connecting piece is used to mount on the battery pack, and the plug-in piece can be inserted into the plug-in slot in a vertical direction.

2. The installation structure according to claim 1, characterized in that, The limiting piece includes a first main body and a first curved portion disposed at the top of the first main body. The bottom end of the first main body is connected to the support piece. The first curved portion protrudes from the limiting piece toward the insertion groove, and the distance between the first curved portion and the fixing piece is less than the thickness of the insertion piece.

3. The installation structure according to claim 2, characterized in that, The connector includes a second main body and a second curved portion disposed on the top of the second main body. A limiting groove is formed on the concave side of the second curved portion. When the connector is inserted into the plug groove, the protruding side of the first curved portion can be embedded in the limiting groove.

4. The installation structure according to claim 3, characterized in that, The limiting piece also includes a guide portion, which is connected to the top end of the first curved portion, and the guide portion extends gradually from bottom to top in a direction away from the fixing piece.

5. The installation structure according to claim 3, characterized in that, The fixing piece has a first clearance groove, the width of which is greater than or equal to the width of the second curved portion. After the insertion piece is inserted into the insertion groove, the protruding side of the second curved portion can be embedded in the first clearance groove. The connector also includes a limiting portion disposed at the top of the second curved portion. The width of the limiting portion is greater than the width of the first clearance groove, and after the first curved portion is embedded in the limiting groove, it abuts against the surface of the fixing piece facing the connector.

6. The installation structure according to claim 3, characterized in that, The bottom end of the second main body is provided with a second clearance groove. When the plug-in piece is inserted into the plug-in groove, the limiting piece can pass through the second clearance groove from bottom to top, and the inner wall of the top side of the second clearance groove abuts against the upper surface of the support piece.

7. The mounting structure according to any one of claims 1-6, characterized in that, The fixing piece has a first connecting hole, which is a strip-shaped hole extending in the vertical direction.

8. A battery assembly, characterized in that, include: The battery pack has a mounting surface; At least one mounting structure as described in any one of claims 1-7, wherein the connecting piece is mounted on the mounting surface and the plug-in piece is inserted into the plug-in slot.

9. The battery assembly according to claim 8, characterized in that, The battery assembly also includes a connecting bolt. The connecting piece has a second connecting hole, which is a strip-shaped hole extending in the horizontal direction. The connecting bolt passes through the second connecting hole and is threadedly connected to the battery pack.

10. An energy storage device, characterized in that, include: Base; Multiple battery assemblies as described in claim 8 or 9, wherein the multiple battery assemblies are stacked and connected to the base; An inverter, electrically connected to a plurality of the battery modules, is used to convert the direct current output from the battery modules into alternating current and output it to an external load or the power grid, and / or to convert the alternating current output from the power grid into direct current and output it to the battery modules.

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