Mounting bracket, energy storage unit and stacked energy storage device

Abstract

According to the mounting bracket, the energy storage unit and the stacked energy storage device, the assembly steps of the stacked energy storage device can be simplified, and the mounting efficiency of the stacked energy storage device can be improved. On the first aspect, the utility model provides the mounting bracket for stacking and mounting the battery packs. The mounting bracket comprises a first mounting piece, a second mounting piece and a connecting piece, the first mounting piece and the second mounting piece are oppositely arranged at an interval in the height direction of the mounting bracket and are used for clamping the battery pack, the first mounting piece is provided with a first positioning part, and the second mounting piece is provided with a second positioning part; the first mounting piece is provided with a first positioning part, the second mounting piece is provided with a second positioning part matched with the first positioning part, and the connecting piece is fixedly connected between the first mounting piece and the second mounting piece and used for abutting against the battery pack.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a mounting bracket, an energy storage unit and a stacked energy storage device. Background Art

[0002] The stacked energy storage device is a device that can provide a sustainable energy supply. It has the advantages of efficient space utilization, scalability and easy management. It is widely used in solar energy storage systems, uninterruptible power supply systems and microgrids. Existing stacked energy storage devices are usually composed of a standard cabinet and multiple battery boxes installed in the standard cabinet. However, the assembly operation between the battery box and the standard cabinet is relatively complicated, which reduces the installation efficiency of the stacked energy storage device. Utility Model Content

[0003] The present application provides a mounting bracket, an energy storage unit and a stacked energy storage device, which can simplify the assembly steps of the stacked energy storage device and improve the installation efficiency of the stacked energy storage device.

[0004] In a first aspect, the present application provides a mounting bracket for stacking and mounting battery packs. The mounting bracket includes a first mounting member, a second mounting member, and a connecting member. Along the height direction of the mounting bracket, the first mounting member and the second mounting member are spaced and arranged opposite to each other, and are used to clamp the battery pack. The first mounting member is provided with a first positioning portion, and the second mounting member is provided with a second positioning portion that matches the first positioning portion. The connecting member is fixedly connected between the first mounting member and the second mounting member, and is used to support the battery pack.

[0005] Wherein, the first mounting member is provided with an avoidance groove, and an opening of the avoidance groove is located on a surface of the first mounting member facing the second mounting member.

[0006] Among them, the first mounting member includes a first plate, a second plate and a third plate, the first plate and the second plate are both fixedly connected to the connecting member, and the first plate and the second plate are spaced apart along the height direction of the mounting bracket, the first plate is provided with the first positioning portion, the second plate is used to clamp the battery pack, and is provided with the avoidance groove, the third plate is fixedly connected between the first plate and the second plate, and is spaced apart from and opposite to the connecting member, and the third plate, the connecting member, the first plate and the second plate enclose a buffer cavity.

[0007] Wherein, the first positioning portion is a positioning hole, the opening of the positioning hole is located on the surface of the first mounting member away from the second mounting member, and the second positioning portion is a positioning column, the positioning column is arranged on the surface of the second mounting member away from the first mounting member, or, the first positioning portion is a positioning column, the positioning column is arranged on the surface of the first mounting member away from the second mounting member, and the second positioning portion is a positioning hole, the opening of the positioning hole is located on the surface of the second mounting member away from the first mounting member; when two adjacent battery packs are stacked and installed, the positioning column is passed through the positioning hole.

[0008] In a second aspect, the present application further provides an energy storage unit, comprising a battery pack and a mounting bracket as described in any one of the above items, wherein there are at least two mounting brackets, and along the length direction of the energy storage unit, at least two of the mounting brackets respectively clamp opposite sides of the battery pack.

[0009] There are four mounting brackets, which are spaced apart around the circumference of the battery pack. Along the length direction of the energy storage unit, every two mounting brackets are clamped on opposite sides of the battery pack.

[0010] In a third aspect, the present application further provides a stacked energy storage device, comprising at least two energy storage units as described above, wherein at least two of the energy storage units are stacked along the height direction of the stacked energy storage device.

[0011] Wherein, the stacked energy storage device also includes at least two fixed brackets. Along the length direction of the stacked energy storage device, at least two of the fixed brackets are respectively located on opposite sides of the energy storage unit, and each of the fixed brackets is installed between the connecting members of two adjacent mounting brackets.

[0012] Wherein, the fixing bracket includes two fixing parts and a connecting part, the two fixing parts are fixedly connected to opposite sides of the connecting part, each of the fixing parts is fixed to one connecting member, and the connecting parts are spaced apart and arranged opposite to the connecting member.

[0013] Among them, the connecting member is provided with a mounting hole, and the mounting hole passes through the connecting member along the thickness direction of the connecting member; the fixing portion is provided with a fixing hole, and the fixing hole passes through the fixing portion along the thickness direction of the fixing portion and is connected with the mounting hole; the stacked energy storage device also includes a fastener, and the fastener is passed through the fixing hole and the mounting hole, and is fixed to the fixing portion and the connecting member.

[0014] Among them, the battery pack is provided with an assembly hole, the opening of the assembly hole is located on the surface of the battery pack in the length direction, and the assembly hole is connected with both the mounting hole and the fixing hole; the fastener is also passed through the assembly hole and fixed to the battery pack.

[0015] Wherein, the stacked energy storage device further includes two bus bars, and along the length direction of the stacked energy storage device, the two bus bars are respectively located on opposite sides of the battery pack, and each of the bus bars is electrically connected to the battery pack.

[0016] In the technical solution provided in the present application, by providing a mounting bracket on the battery pack and utilizing the mutual cooperation between the first positioning portion of the first mounting member and the second positioning portion of the second mounting member, the stacking installation of multiple battery packs can be achieved to complete the assembly of the stacked energy storage device. This setting can simplify the assembly steps of the stacked energy storage device, making the installation method of the stacked energy storage device simple and quick, and can greatly improve the installation efficiency of the stacked energy storage device. At the same time, users do not need to use standard cabinets to install multiple battery packs, which can save the purchase cost of standard cabinets, thereby reducing the cost of users using stacked energy storage devices, which is also conducive to increasing the sales volume of stacked energy storage devices, so as to improve the economic benefits of stacked energy storage devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0018] Figure 1 is a schematic structural diagram of a stacked energy storage device provided in an embodiment of the present application;

[0019] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the stacked energy storage device shown;

[0020] Figure 3 yes Figure 2 A schematic diagram of the structure of an energy storage unit in the stacked energy storage device shown;

[0021] Figure 4 yes Figure 3 A schematic diagram of the exploded structure of the energy storage unit shown;

[0022] Figure 5 yes Figure 4 A magnified schematic diagram of the middle A area;

[0023] Figure 6 yes Figure 3 A schematic diagram of the structure of the mounting bracket in the energy storage unit shown;

[0024] Figure 7 yes Figure 2A schematic diagram of the structure of a fixed bracket in a stacked energy storage device is shown. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0026] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of a stacked energy storage device 100 provided in an embodiment of the present application, Figure 2 yes Figure 1 The schematic diagram of the exploded structure of the stacked energy storage device 100 is shown. For the convenience of description, the length direction of the stacked energy storage device 100 is defined as the X-axis direction, the width direction of the stacked energy storage device 100 is defined as the Y-axis direction, and the height direction of the stacked energy storage device 100 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0027] In this embodiment, the stacked energy storage device 100 includes at least two energy storage units 110, at least two fixing brackets 120, two bus bars 130 and cables 140. In particular, along the height direction (Z-axis direction in the figure) of the stacked energy storage device 100, at least two energy storage units 110 are stacked. Exemplarily, there are four energy storage units 110. In some other embodiments, the number of energy storage units 110 may also be two, three, five or more than five.

[0028] In this embodiment, along the length direction of the stacked energy storage device 100, at least two fixing brackets 120 are respectively located on opposite sides of the energy storage unit 110. Each fixing bracket 120 is installed between two adjacent energy storage units 110, so that two adjacent energy storage units 110 in the stacked energy storage device 100 can be fixedly assembled.

[0029] Along the length direction of the stacked energy storage device 100 (the X-axis direction in the figure), the two busbars 130 are respectively located on opposite sides of the energy storage unit 110. Each busbar 130 is fixedly installed between two adjacent energy storage units 110, and is electrically connected to multiple energy storage units 110. Exemplarily, each busbar 130 is screwed between two adjacent energy storage units 110. The cable 140 is electrically connected between the busbar 130 and the energy storage unit 110 to electrically connect the busbar 130 to the energy storage unit 110. Exemplarily, each busbar 130 is electrically connected to multiple energy storage units 110 through the cable 140, thereby realizing parallel connection between multiple energy storage units 110.

[0030] See also Figure 3 , Figure 4 and Figure 5, Figure 3 yes Figure 2 The schematic diagram of the structure of the energy storage unit 110 in the stacked energy storage device 100 is shown. Figure 4 yes Figure 3 The schematic diagram of the exploded structure of the energy storage unit 110 is shown. Figure 5 yes Figure 4 A magnified schematic diagram of area A in the middle.

[0031] Each energy storage unit 110 includes a battery pack 10 and at least two mounting brackets 20, and at least two mounting brackets 20 are fixedly mounted on the outer peripheral side of the battery pack 10 and are spaced apart from each other. Among them, the battery pack 10 is provided with a first connecting terminal 12 and a second connecting terminal 13, and the first connecting terminal 12 and the second connecting terminal 13 are electrically connected to a plurality of batteries so that the energy storage unit 110 can be electrically connected to other devices. Exemplarily, the first connecting terminal 12 is a positive terminal, and the second connecting terminal 13 is a negative terminal. In some other embodiments, the first connecting terminal 12 may also be a negative terminal, and the second connecting terminal 13 may also be a positive terminal, and the embodiments of the present application do not strictly limit this.

[0032] In this embodiment, the number of the first connection terminal 12 and the number of the second connection terminal 13 are both one. Under this setting, on the one hand, the risk of failure of the energy storage unit 110 due to incorrect connection of the connection terminals between two battery packs 10 when the user uses multiple energy storage units 110 in parallel can be reduced, thereby helping to ensure the reliability of the stacked energy storage device 100. On the other hand, it is also conducive to promoting the effective use of the first connection terminal 12 and the second connection terminal 13 in the energy storage unit 110, avoiding the idleness of the redundant connection terminals in the energy storage unit 110, and improving the utilization rate of the energy storage unit 110.

[0033] In addition, the battery pack 10 is further provided with an assembly hole 11. The opening of the assembly hole 11 is located on the surface in the length direction of the battery pack 10. The assembly hole 11 is recessed from the surface in the length direction of the battery pack 10 toward the inside of the battery pack 10. Exemplarily, there are a plurality of assembly holes 11. The plurality of assembly holes 11 are arranged at intervals from each other.

[0034] Please refer to Figure 3 and Figure 6 , Figure 6 yes Figure 3 A schematic structural diagram of the mounting bracket 20 in the energy storage unit 110 is shown.

[0035] In this embodiment, the mounting brackets 20 are used to stack and mount the battery packs 10, so that the battery packs 10 of two adjacent energy storage units 110 in the stacked energy storage device 100 are stacked and mounted. Along the length direction of the stacked energy storage device 100 (the X-axis direction in the figure), at least two mounting brackets 20 are respectively clamped on opposite sides of the battery pack 10. In other words, the battery pack 10 is installed between at least two mounting brackets 20.

[0036] Each mounting bracket 20 includes a first mounting member 21, a second mounting member 22 and a connecting member 23. The first mounting member 21 and the second mounting member 22 are spaced apart and arranged opposite to each other along the height direction (Z-axis direction shown in the figure) of the stacked energy storage device 100. The connecting member 23 is fixedly connected between the first mounting member 21 and the second mounting member 22 and is used to support the battery pack 10. When the mounting bracket 20 is assembled with the battery pack 10, the first mounting member 21 and the second mounting member 22 are respectively clamped on opposite sides of the battery pack 10 along the height direction (Z-axis direction shown in the figure) of the stacked energy storage device 100. The connecting member 23 is located on one side of the length direction (X-axis direction shown in the figure) of the battery pack 10 and supports the battery pack 10.

[0037] In this embodiment, the first mounting member 21 includes a first plate 211, a second plate 212 and a third plate 213. The first plate 211 and the second plate 212 are both connected to one side of the thickness direction of the connecting member 23. Along the height direction of the stacked energy storage device 100 (Z-axis direction in the figure), the first plate 211 and the second plate 212 are spaced apart. Among them, the first plate 211 is provided with a first positioning portion 21a. The second plate 212 is used to cooperate with the second mounting member 22 to clamp the battery pack 10. The third plate 213 is fixedly connected between the first plate 211 and the second plate 212. Along the length direction of the stacked energy storage device 100 (X-axis direction in the figure), the third plate 213 is spaced apart from the connecting member 23 and is arranged relative to each other.

[0038] In addition, the first plate 211, the second plate 212 and the third plate 213 of the first mounting member 21 and the connecting member 23 enclose a buffer cavity 20a. When the battery pack 10 is installed between at least two mounting brackets 20, the buffer cavity 20a can release the force applied to the mounting bracket 20, avoiding excessive concentration of the force applied to the mounting bracket 20, thereby helping to ensure good reliability of the use of the mounting bracket 20.

[0039] In this embodiment, the first mounting member 21 is further provided with a first positioning portion 21a. Exemplarily, the first positioning portion 21a is a positioning hole. The opening of the positioning hole is located on the surface of the first mounting member 21 away from the second mounting member 22. Specifically, the positioning hole is provided on the first plate 211. The positioning hole penetrates the first plate 211 along the thickness direction of the first plate 211.

[0040] The first mounting member 21 is also provided with an avoidance groove 214. The opening of the avoidance groove 214 is located on the surface of the first mounting member 21 facing the second mounting member 22. Specifically, the second plate 212 is provided with an avoidance groove 214. The opening of the avoidance groove 214 is located on the surface of the second plate 212 away from the first plate 211. The avoidance groove 214 is recessed from the surface of the second plate 212 away from the first plate 211 toward the first plate 211, and penetrates the end surface of the second plate 212 in the width direction. Exemplarily, the avoidance groove 214 also penetrates the end surface of the second plate 212 facing the connecting member 23.

[0041] It is understandable that when the mounting bracket 20 is assembled with the battery pack 10, by providing the avoidance groove 214 on the first mounting member 21, the avoidance groove 214 can be used to disperse the stacking stress on the mounting bracket 20, so as to avoid the stacking stress on the mounting bracket 20 being too concentrated and damaging the mounting bracket 20, thereby enhancing the structural strength of the mounting bracket 20, ensuring the reliability of the use of the mounting bracket 20, and thus ensuring the assembly reliability of the stacked installation of multiple energy storage units 110. At the same time, it can also avoid interference between the bottom surface of the battery pack 10 and the top surface of the first mounting member 21 during the assembly process, so that the mounting bracket 20 and the battery pack 10 can be assembled smoothly.

[0042] In this embodiment, the connector 23 is provided with a mounting hole 231, which penetrates the connector 23 along the thickness direction of the connector 23 and is connected to the assembly hole 11 of the battery pack 10. Exemplarily, there are multiple mounting holes 231. The multiple mounting holes 231 are arranged at intervals from each other. When the mounting bracket 20 is mounted to the battery pack 10, each mounting hole 231 is connected to an assembly hole 11 of the battery pack 10.

[0043] Please continue reading Figure 6 . The second mounting member 22 is provided with a second positioning portion 22a that cooperates with the first positioning portion 21a. Exemplarily, the second positioning portion 22a is a positioning column. The positioning column is protruding from the surface of the second mounting member 22 away from the battery pack 10. When two energy storage units 110 are stacked and installed along the height direction of the stacked energy storage device 100, the mounting brackets 20 of the two adjacent energy storage units 110 are also stacked and installed along the height direction of the stacked energy storage device 100. At this time, the first positioning portion 21a of one mounting bracket 20 is fixed to the second positioning portion 22a of the other mounting bracket 20. Specifically, the positioning column of one mounting bracket 20 is passed through the positioning hole of the other mounting bracket 20. Under this setting, it can play a limiting role for the two adjacent stacked energy storage units 110, avoid shaking of multiple stacked energy storage units 110, so as to facilitate the subsequent stacking and installation of energy storage units 110, thereby realizing the assembly of the stacked energy storage device 100.

[0044] It is understandable that by arranging the mounting bracket 20 between two adjacent energy storage units 110 and utilizing the mutual cooperation between the first positioning portion 21a of the first mounting member 21 and the second positioning portion 22a of the second mounting member 22, the stacking installation of multiple energy storage units 110 can be achieved, and the installation method is simple and fast, which greatly improves the installation efficiency of the stacked energy storage device 100. At the same time, the user does not need to use a standard cabinet to install multiple energy storage units 110, which can save the purchase cost of the standard cabinet, thereby reducing the cost of the user using the stacked energy storage device 100, which is also conducive to increasing the sales volume of the stacked energy storage device 100, so as to improve the economic benefits of the stacked energy storage device 100.

[0045] In some other embodiments, the first positioning portion 21a may also be a positioning column. The positioning column is protruding from the surface of the first mounting member 21 away from the battery pack 10. Specifically, the positioning column is protruding from the surface of the first plate 211 away from the second plate 212. At this time, the second positioning portion 22a is a positioning hole. The opening of the positioning hole is located on the surface of the second mounting member 22 away from the battery pack 10. Exemplarily, the positioning hole passes through the second positioning member along the thickness direction of the second mounting member 22. When two adjacent energy storage units 110 are stacked and installed, the first positioning portion 21a of one mounting bracket 20 is fixed to the second positioning portion 22a of another mounting bracket 20. Specifically, the positioning column of one mounting bracket 20 is passed through the positioning hole of another mounting bracket 20. Under this setting, it can also play a limiting role for two adjacent stacked energy storage units 110, avoiding the shaking of multiple stacked energy storage units 110, so as to facilitate the subsequent stacking and installation of energy storage units 110, thereby also realizing the assembly of the stacked energy storage device 100.

[0046] In this embodiment, there are four mounting brackets 20. The four mounting brackets 20 are arranged at intervals around the circumference of the battery pack 10. In particular, along the length direction of the energy storage unit 110 (the X-axis direction in the figure), every two mounting brackets 20 are clamped on opposite sides of the battery pack 10 respectively to ensure that the battery packs 10 are stacked and installed stably.

[0047] It is understandable that during the stacking installation of multiple energy storage units 110, the battery packs 10 of two adjacent energy storage units 110 are spaced apart along the height direction of the stacked energy storage device 100 (the X-axis direction in the figure). The weight of the battery pack 10 of each energy storage unit 110 is shared by four mounting brackets 20. Normally, the mounting bracket 20 needs to withstand a weight of more than 200 kg. In this embodiment, by arranging four mounting brackets 20 at intervals around the battery pack 10, the force exerted by the battery pack 10 on the mounting bracket 20 can be distributed more evenly, so that the four mounting brackets 20 can evenly share the weight of the battery pack 10, avoiding excessive concentration of the force exerted on the mounting bracket 20, thereby helping to enhance the stability of the stacked installation of multiple energy storage units 110.

[0048] Please refer to Figure 1 , Figure 2 and Figure 7 , Figure 7 yes Figure 2 A schematic structural diagram of a fixed bracket 120 in a stacked energy storage device 100 is shown.

[0049] In this embodiment, along the length direction (X-axis direction in the figure) of the stacked energy storage device 100, at least two fixing brackets 120 are respectively located on opposite sides of the energy storage unit 110. Each fixing bracket 120 is installed between the connecting members 23 of two adjacent mounting brackets 20, so that two adjacent energy storage units 110 are fixedly installed.

[0050] Specifically, each fixing bracket 120 includes two fixing parts 30 and a connecting part 40. The two fixing parts 30 are fixedly connected to opposite sides of the connecting part 40. Among them, each fixing part 30 is fixed to a connecting member 23 of a mounting bracket 20. Each fixing part 30 is provided with a fixing hole 31. The fixing hole 31 passes through the fixing part 30 along the thickness direction of the fixing part 30, and is connected to the mounting hole 231 of the first mounting member 21, so that the fixing hole 31 is connected to the assembly hole 11 of the battery pack 10. Exemplarily, the fixing hole 31 is a waist-shaped hole. In this embodiment, there are multiple fixing holes 31. The multiple fixing holes 31 are arranged at intervals from each other. Each fixing hole 31 is connected to the mounting hole 231 of a first mounting member 21, so that each mounting hole 231 is connected to an assembly hole 11 of the battery pack 10. In addition, the stacked energy storage device 100 also includes a plurality of fasteners (not shown). Each fastener is inserted through the fixing hole 31 , the mounting hole 231 and the assembly hole 11 , and is fixed to the fixing portion 30 of the fixing bracket 120 , the connecting member 23 of the mounting bracket 20 and the battery pack 10 .

[0051] It can be understood that by providing a fixing hole 31 on the fixing bracket 120 and communicating the fixing hole 31 with the mounting hole 231 so as to communicate the fixing hole 31 with the assembly hole 11, the hole positions of the fixing bracket 120, the hole positions of the mounting bracket 20 and the hole positions of the battery pack 10 can be reused, which can avoid the assembly failure problem between two adjacent energy storage units 110 caused by the excessively large or small aperture size tolerance of the mounting hole 231, the fixing hole 31 and the assembly hole 11, and ensure that multiple energy storage units 110 can be smoothly stacked and assembled, and can also simplify the installation steps of multiple energy storage units 110 to complete the fixed assembly, thereby helping to improve the installation efficiency of the stacked energy storage device 100.

[0052] In this embodiment, the connection portion 40 of the fixing bracket 120 is spaced apart and arranged opposite to the connection piece 23 of the mounting bracket 20. Under this arrangement, the connection portion 40 can disperse the force applied to the fixing bracket 120, and prevent the fixing bracket 120 from being damaged due to excessive concentration of the force applied, thereby enhancing the structural strength of the fixing bracket 120, ensuring the reliability of the use of the fixing bracket 120, and further helping to improve the assembly reliability between the multiple energy storage units 110 in the stacked energy storage device 100.

[0053] Please continue reading Figure 1 and Figure 2 Each busbar 130 is fixedly installed between the battery packs 10 of the two energy storage units 110, and is electrically connected to the battery packs 10. In this embodiment, the two busbars 130 are respectively a first busbar 130a and a second busbar 130b. The first busbar 130a is electrically connected to the first connection terminals 12 of the plurality of battery packs 10, and the second busbar 130b is electrically connected to the second connection terminals 13 of the plurality of battery packs 10.

[0054] It is understandable that, by providing a bus 130 and electrically connecting the bus 130 to the multiple energy storage units 110, the currents of the multiple energy storage units 110 can be converged to the bus 130, and then the currents are led out to the inverter through the bus 130, so as to avoid the energy storage units 110 from running in a high-power state for a long time, prevent the temperature of the energy storage units 110 from being too high, and reduce the risk of failure of the energy storage units 110 due to high temperature, thereby ensuring the stability of the parallel operation of the multiple energy storage units 110, improving the reliability of the stacked energy storage device, and helping to extend the service life of the stacked energy storage device 100.

[0055] The stacked energy storage device 100 provided in the present application is provided with mounting brackets 20 around the battery pack 10. When two adjacent energy storage units 110 are stacked and installed, the first positioning portion 21a of the first mounting member 21 of one mounting bracket 20 and the second positioning portion 22a of the second mounting member 22 of another mounting bracket 20 cooperate with each other to achieve stacked installation of multiple energy storage units 110. On the one hand, the installation method is simple and fast, which can greatly improve the assembly efficiency of the stacked energy storage device 100. On the other hand, it can also reduce the material cost of the stacked energy storage device 100. At the same time, the standard cabinet can be omitted, saving the user the cost of purchasing the standard cabinet and reducing the cost of the user using the stacked energy storage device 100, thereby helping to increase the sales volume of the stacked energy storage device 100 and improving the economic benefits of the stacked energy storage device 100. On this basis, by setting a fixed bracket 120 between two adjacent energy storage units 110 and fixing the fixed bracket 120 between two adjacent mounting brackets 20, the stacking reliability between two adjacent energy storage units 110 can be further improved, thereby ensuring better reliability of the stacked energy storage device 100.

[0056] The above are only some embodiments and implementation methods of the present application, and the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A mounting bracket for stacking and mounting battery packs, characterized in that: The mounting bracket includes a first mounting member, a second mounting member and a connecting member. Along the height direction of the mounting bracket, the first mounting member and the second mounting member are spaced apart and arranged opposite to each other, and are used to clamp the battery pack. The first mounting member is provided with a first positioning portion, and the second mounting member is provided with a second positioning portion that cooperates with the first positioning portion. The connecting member is fixedly connected between the first mounting member and the second mounting member, and is used to support the battery pack.

2. The mounting bracket according to claim 1, characterized in that: The first mounting member is provided with an avoidance groove, and an opening of the avoidance groove is located on a surface of the first mounting member facing the second mounting member.

3. The mounting bracket according to claim 2, characterized in that: The first mounting member includes a first plate, a second plate and a third plate, the first plate and the second plate are both fixedly connected to the connecting member, the first plate and the second plate are spaced apart along the height direction of the mounting bracket, the first plate is provided with the first positioning portion, the second plate is used to clamp the battery pack and is provided with the avoidance groove, the third plate is fixedly connected between the first plate and the second plate, and is spaced apart from and opposite to the connecting member, the third plate, the connecting member, the first plate and the second plate enclose a buffer cavity.

4. The mounting bracket according to any one of claims 1 to 3, characterized in that: The first positioning portion is a positioning hole, the opening of which is located on the surface of the first mounting member away from the second mounting member, and the second positioning portion is a positioning column, which is provided on the surface of the second mounting member away from the first mounting member, or the first positioning portion is a positioning column, which is provided on the surface of the first mounting member away from the second mounting member, and the second positioning portion is a positioning hole, the opening of which is located on the surface of the second mounting member away from the first mounting member; When two adjacent battery packs are stacked and installed, the positioning column passes through the positioning hole.

5. An energy storage unit, characterized in that: It comprises a battery pack and a mounting bracket as described in any one of claims 1 to 4, wherein there are at least two mounting brackets, and along the length direction of the energy storage unit, at least two mounting brackets respectively clamp opposite sides of the battery pack.

6. The energy storage unit according to claim 5, characterized in that: There are four mounting brackets, which are arranged at intervals around the circumference of the battery pack. Along the length direction of the energy storage unit, every two mounting brackets are clamped on opposite sides of the battery pack respectively.

7. A stacked energy storage device, characterized in that: It comprises at least two energy storage units as claimed in claim 5 or 6, and at least two of the energy storage units are stacked along the height direction of the stacked energy storage device.

8. The stacked energy storage device according to claim 7, characterized in that: The stacked energy storage device further comprises at least two fixing brackets. Along the length direction of the stacked energy storage device, at least two of the fixing brackets are respectively located on opposite sides of the energy storage unit, and each of the fixing brackets is installed between the connecting members of two adjacent mounting brackets.

9. The stacked energy storage device according to claim 8, characterized in that: The fixing bracket includes two fixing parts and a connecting part. The two fixing parts are fixedly connected to opposite sides of the connecting part. Each of the fixing parts is fixed to one connecting member. The connecting parts are spaced apart from and arranged opposite to the connecting member.

10. The stacked energy storage device according to claim 9, characterized in that: The connecting piece is provided with a mounting hole, and the mounting hole penetrates the connecting piece along the thickness direction of the connecting piece; The fixing portion is provided with a fixing hole, the fixing hole penetrates the fixing portion along the thickness direction of the fixing portion and is communicated with the mounting hole; The stacked energy storage device further includes a fastener, which is passed through the fixing hole and the mounting hole and is fixed to the fixing portion and the connecting member.

11. The stacked energy storage device according to claim 10, characterized in that: The battery pack is provided with an assembly hole, the opening of the assembly hole is located on the surface of the battery pack in the length direction, and the assembly hole is connected to both the mounting hole and the fixing hole; The fastener is also inserted into the assembly hole and fixed to the battery pack.

12. The stacked energy storage device according to any one of claims 7 to 11, characterized in that: The stacked energy storage device further includes two bus bars. Along the length direction of the stacked energy storage device, the two bus bars are respectively located on opposite sides of the battery pack, and each bus bar is electrically connected to the battery pack.

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