Box body, battery pack and energy storage equipment

Abstract

The utility model discloses a box body, a battery pack and energy storage equipment, the box body comprises: an end plate, one side of the end plate in the thickness direction is provided with a positioning groove; the side plate is connected to the side, provided with the positioning groove, of the end plate, a positioning protrusion protruding towards the end plate is formed at the end, facing the end plate, of the side plate, and the positioning protrusion is arranged in the positioning groove in a matched mode; and the fixing piece is arranged between the positioning bulge and the side wall of the positioning groove and is used for fixing the positioning bulge in the positioning groove. According to the box body, the production process can be simplified, the production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a box, a battery pack and an energy storage device. Background Art

[0002] In some battery packs, the battery packs are packaged in a box. In related technologies, the production process of the box is relatively complicated, which makes the production cost of the box relatively high. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a box body, which can improve production efficiency and reduce production costs.

[0004] The utility model also provides a battery pack having the box body.

[0005] The utility model also provides an energy storage device having the battery pack.

[0006] According to the first aspect of the utility model, the box body includes: an end plate, which is formed with a positioning groove on one side in the thickness direction; a side plate, which is connected to the side of the end plate where the positioning groove is provided, and the end of the side plate facing the end plate is formed with a positioning protrusion protruding toward the end plate, and the positioning protrusion is matched in the positioning groove; a fixing member, which is provided between the positioning protrusion and the side wall of the positioning groove, and is used to fix the positioning protrusion in the positioning groove.

[0007] The box body according to the first aspect of the utility model can simplify the production process, improve production efficiency, and reduce production costs.

[0008] According to some embodiments of the utility model, a first fixing groove is formed on the side wall of the positioning groove, a second fixing groove is formed on one side of the positioning protrusion in the thickness direction of the side plate, the first fixing groove is opposite to the second fixing groove, and the fixing member is arranged in the first fixing groove and the second fixing groove.

[0009] According to some embodiments of the utility model, the fixing member is a fixing pin, the positioning protrusion and the positioning groove extend along a first direction, the first direction is perpendicular to the thickness direction of the side plate and the thickness direction of the end plate, and in the direction from the side plate toward the end plate, the opening size of the positioning groove gradually decreases, the first fixing groove penetrates the side wall of the positioning groove in the first direction, and the second fixing groove penetrates the positioning protrusion along the first direction.

[0010] According to some embodiments of the utility model, there are two end plates, and there are two side plates, the two end plates are arranged at intervals in the thickness direction, the two side plates are arranged at intervals in the thickness direction, and the two side plates are connected between the two end plates, and the box body also includes: a front cover plate and a rear cover plate, the front cover plate and the rear cover plate are respectively covered at both ends of the end plate and the side plate in a first direction to enclose the box body, and the first direction is perpendicular to the thickness direction of the side plate and the thickness direction of the end plate.

[0011] According to some embodiments of the utility model, a first fixing hole is formed on the end plate and passes through the end plate along the first direction, a second fixing hole is formed on the side plate and passes through the side plate along the first direction, a third fixing hole is formed on the front cover plate, and a fourth fixing hole is formed on the rear cover plate and passes through the rear cover plate along the thickness direction, and fasteners pass through the fourth fixing hole, the first fixing hole, and the third fixing hole in sequence to connect the front cover plate and the rear cover plate at both ends of the end plate, and fasteners pass through the fourth fixing hole, the second fixing hole, and the third fixing hole in sequence to connect the front cover plate and the rear cover plate at both ends of the side plate.

[0012] The battery pack according to the second aspect of the present invention comprises: the box body according to the first aspect of the present invention; and a plurality of battery cells, which are stacked and arranged in the box body.

[0013] According to the battery pack of the second aspect of the present invention, by providing the box body according to the first aspect of the present invention, the production cost can be reduced, and the energy storage capacity requirement can be achieved by stacking battery cells, which can reduce the materials in the battery pack and further reduce the production cost.

[0014] According to some embodiments of the utility model, the battery pack further includes: a bus bracket, which is arranged on one side of the battery cell in the thickness direction of the end plate, and a limiting protrusion is also formed on the side of the side plate facing the battery cell, and the bus bracket cooperates with the first limiting protrusion.

[0015] The energy storage device according to the third aspect of the utility model comprises: at least one battery pack according to the second aspect of the utility model.

[0016] According to the energy storage device of the third aspect of the utility model, the production cost can be reduced by providing the battery pack according to the second aspect of the utility model.

[0017] According to some embodiments of the utility model, there are multiple battery packs, and the multiple battery packs are stacked in the thickness direction of the end plate. The battery pack includes two end plates, and the two end plates are arranged at intervals in the thickness direction. The end plate located at the first end of the battery pack is the first end plate, and the end plate located at the second end of the battery pack is the second end plate. A first mounting protrusion and a first mounting groove are formed on the side of the first end plate away from the battery cell, and a second mounting protrusion and a second mounting groove are formed on the side of the second end plate away from the battery cell. The first mounting protrusion is matched with the second mounting groove, and the second mounting protrusion is matched with the first mounting groove to realize the connection between two adjacent battery packs.

[0018] According to some embodiments of the present invention, the energy storage device further includes: a mounting bracket, the mounting bracket extending along the thickness direction of the end plate, the mounting bracket being respectively connected to the plurality of battery packs.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of an energy storage device according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of another angle of the energy storage device shown in;

[0022] Figure 3 yes Figure 1 An exploded view of the energy storage device shown in;

[0023] Figure 4 yes Figure 1 A schematic diagram of a battery pack shown in ;

[0024] Figure 5 yes Figure 4 A cross-sectional view of a battery pack shown in ;

[0025] Figure 6 yes Figure 5 An enlarged view of A shown in FIG.

[0026] Figure 7 yes Figure 1 A schematic diagram of the top cover shown in ;

[0027] Figure 8 yes Figure 4 An exploded view of the battery pack shown in;

[0028] Fig. 9It is a cross-sectional view of a box body according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] 10000. Energy storage equipment;

[0031] 1000, battery pack;

[0032] 100, box body;

[0033] 10. end plate; 11. positioning groove; 111. first fixing groove; 12. first fixing hole; 13. first end plate; 131. first mounting protrusion; 132. first mounting groove; 133. handle opening;

[0034] 20, side plate; 21, positioning protrusion; 211, second fixing groove; 22, second fixing hole; 23, first limiting protrusion; 24, high-voltage wiring harness interface; 25, low-voltage wiring harness interface;

[0035] 30. Fixing parts;

[0036] 40. front cover; 41. third fixing hole;

[0037] 50. rear cover plate; 51. fourth fixing hole;

[0038] 60. Side cover;

[0039] 200, battery cell;

[0040] 300, busbar support; 310, insulation sheet; 320, electrical support; 330, battery management system;

[0041] 2000, mounting bracket; 2100, first bracket; 2200, second bracket;

[0042] 3000, top cover; 3100, third mounting protrusion; 3200, third mounting groove;

[0043] 4000. Base. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] Reference below Figure 1-Figure 9 The box 100 according to the first embodiment of the utility model is described.

[0046] like Figure 5, Figure 6 and Fig. 9 As shown, the box body 100 according to the embodiment of the first aspect of the utility model includes: an end plate 10, a side plate 20 and a fixing member 30.

[0047] Specifically, a positioning groove 11 is formed on one side of the end plate 10 in the thickness direction, and the side plate 20 is connected to the side of the end plate 10 where the positioning groove 11 is provided. A positioning protrusion 21 protruding toward the end plate 10 is formed at one end of the side plate 20 facing the end plate 10, and the positioning protrusion 21 is fitted in the positioning groove 11. The fixing member 30 is provided between the positioning protrusion 21 and the side wall of the positioning groove 11, and is used to fix the positioning protrusion 21 in the positioning groove 11.

[0048] During the assembly process, the positioning protrusion 21 is extended into the positioning groove 11 , and then the fixing member 30 is installed between the positioning protrusion 21 and the side wall of the positioning groove 11 , so that the side plate 20 and the end plate 10 can be connected.

[0049] The cooperation between the positioning protrusion 21 and the positioning groove 11 can realize rapid positioning. During the assembly process, the positioning groove 11 can provide guidance for the positioning protrusion 21, thereby improving production efficiency and assembly accuracy.

[0050] The positioning protrusion 21 is fixed in the positioning groove 11 by the fixing member 30 disposed between the positioning protrusion 21 and the side wall of the positioning groove 11. Compared with connecting the side plate 20 and the end plate 10 by welding or bonding, the production process can be simplified, thereby improving production efficiency and reducing production costs.

[0051] The box body 100 according to the embodiment of the first aspect of the utility model can simplify the production process, improve the production efficiency, and reduce the production cost.

[0052] In some embodiments of the present invention, Figure 5 , Figure 6 , Figure 8 and Fig. 9 A first fixing groove 111 is formed on the side wall of the positioning groove 11 , and a second fixing groove 211 is formed on one side of the positioning protrusion 21 in the thickness direction of the side plate 20 . The first fixing groove 111 is opposite to the second fixing groove 211 , and the fixing member 30 is disposed in the first fixing groove 111 and the second fixing groove 211 .

[0053] For example, the fixing member 30 may be a fixing ball, and the first fixing groove 111 and the second fixing groove 211 may be ball grooves; the fixing member 30 may also be a fixing pin, and the first fixing groove 111 and the second fixing groove 211 may be long grooves. When the side plate 20 is subjected to a force in a direction away from the end plate 10, the fixing member 30 may abut against the groove wall of the first fixing groove 111 and the groove wall of the second fixing groove 211, thereby preventing the positioning protrusion 21 from being separated from the positioning groove 11, thereby achieving the fixing of the positioning protrusion 21 in the positioning groove 11.

[0054] In some embodiments of the present invention, Figure 6 and Figure 8 As shown, the fixing member 30 is a fixing pin, the positioning protrusion 21 and the positioning groove 11 extend along a first direction, the first direction is perpendicular to the thickness direction of the side plate 20 and the thickness direction of the end plate 10, and in the direction from the side plate 20 toward the end plate 10, the opening size of the positioning groove 11 gradually decreases, the first fixing groove 111 penetrates the side wall of the positioning groove 11 in the first direction, and the second fixing groove 211 penetrates the positioning protrusion 21 along the first direction.

[0055] During the assembly process, the positioning protrusion 21 is first extended into the positioning groove 11, and then the fixing pin is extended from one end of the positioning protrusion 21 in the first direction into the space enclosed by the first fixing groove 111 and the second fixing groove 211, thereby realizing the connection between the side panel 20 and the end panel 10.

[0056] Among them, setting the fixing member 30 as a fixing pin can increase the effective area of ​​the fixing member 30 on the positioning protrusion 21 and the side wall of the positioning groove 11, thereby improving the strength and reliability of the connection between the side plate 20 and the end plate 10. In the direction from the side plate 20 to the end plate 10, the opening size of the positioning groove 11 gradually decreases, which can reduce the difficulty of assembling the positioning protrusion 21 into the positioning groove 11, thereby further improving production efficiency. The first fixing groove 111 penetrates the side wall of the positioning groove 11 in the first direction, and the second fixing groove 211 penetrates the positioning protrusion 21 along the first direction, which can provide an operating space for assembling the fixing pin, so that the fixing pin will not be interfered in the process of assembling into the first fixing groove 111 and the second fixing groove 211.

[0057] In some embodiments of the present invention, Figure 3 , Figure 4 and Figure 8 As shown, there are two end plates 10 and two side plates 20, the two end plates 10 are arranged at intervals in the thickness direction, the two side plates 20 are arranged at intervals in the thickness direction, the two side plates 20 are connected between the two end plates 10, and the box body 100 also includes: a front cover plate 40 and a rear cover plate 50, the front cover plate 40 and the rear cover plate 50 are respectively covered on both ends of the end plate 10 and the side plate 20 in the first direction to enclose the box body 100, and the first direction is perpendicular to the thickness direction of the side plate 20 and the thickness direction of the end plate 10.

[0058] Thus, the enclosure 100 can be packaged. During product design, the size or relative angle of the end plate 10, the side plate 20, the front cover plate 40 and the rear cover plate 50 can be adjusted to meet more product design requirements.

[0059] In some embodiments of the present invention, Figure 3 , Figure 8 and Fig. 9 As shown, a first fixing hole 12 is formed on the end plate 10 and passes through the end plate 10 along a first direction, a second fixing hole 22 is formed on the side plate 20 and passes through the side plate 20 along the first direction, a third fixing hole 41 is formed on the front cover plate 40, and a fourth fixing hole 51 is formed on the rear cover plate 50 and passes through the rear cover plate 50 along the thickness direction. The fastener passes through the fourth fixing hole 51, the first fixing hole 12 and the third fixing hole 41 in sequence to connect the front cover plate 40 and the rear cover plate 50 at both ends of the end plate 10. The fastener passes through the fourth fixing hole 51, the second fixing hole 22 and the third fixing hole 41 in sequence to connect the front cover plate 40 and the rear cover plate 50 at both ends of the side plate 20.

[0060] That is to say, in the first direction, the fasteners penetrate the entire end plate 10 to connect the front cover plate 40 and the rear cover plate 50 at both ends of the end plate 10, and the fasteners penetrate the entire side plate 20 to connect the front cover plate 40 and the rear cover plate 50 at both ends of the side plate 20. In this way, the force exerted by the front cover plate 40 and the rear cover plate 50 on the side plate 20 and the end plate 10 is more evenly distributed on the side plate 20 and the end plate 10, thereby improving the stability of the structure of the box body 100.

[0061] During product design, parameters such as the number or arrangement positions of the first fixing holes 12 , the second fixing holes 22 , the third fixing holes 41 and the fourth fixing holes 51 may be adjusted to meet more product design requirements.

[0062] Among them, preferably, the fasteners are bolts, which are standard parts. There is no need to open molds during product development, which can reduce production costs. The bolt connection strength and reliability are high, which can ensure that the connection strength and reliability of the front cover plate 40 and the rear cover plate 50 with the side plate 20 and the end plate 10 meet the use requirements.

[0063] A nut column is formed on one side of the front cover plate 40 facing the rear cover plate 50, and the third fixing hole 41 is formed as a threaded hole on the nut column. In this way, the length of the inner thread of the third fixing hole 41 can be increased, thereby further improving the reliability of the connection between the front cover plate 40 and the rear cover plate 50 on both sides of the side plate 20 and the end plate 10, and the third fixing hole 41 does not penetrate the rear cover plate 50, which can improve the sealing reliability of the box body 100.

[0064] In some embodiments of the utility model, sealing gaskets are provided at the connections between the front cover plate 40, the rear cover plate 50, the side plate 20 and the end plate 10, thereby achieving sealing between the front cover plate 40, the rear cover plate 50, the side plate 20 and the end plate 10, so that the sealing performance of the box body 100 meets the use requirements.

[0065] In some embodiments of the present invention, Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, the box body 100 also includes a side cover plate 60, which is covered on the outer side of the side plate 20. The side cover plate 60 is bolted to the side plate 20, and a wiring space for wiring is defined between the side cover plate 60 and the side plate 20. By setting the side cover plate 60, the side cover plate 60 can provide protection for the wiring harness, reduce the probability of damage to the wiring harness caused by the external environment, thereby improving the safety of the battery pack 1000.

[0066] Reference below Figure 1-Figure 8 A battery pack 1000 according to an embodiment of the second aspect of the utility model is described.

[0067] According to the battery pack 1000 of the second embodiment of the utility model, Figure 5 As shown, it includes: the box body 100 according to the embodiment of the first aspect of the utility model and a plurality of battery cells 200 , wherein the plurality of battery cells 200 are stacked and arranged in the box body 100 .

[0068] It is understandable to those skilled in the art that multiple battery cells 200 connected in series can realize the superposition of the energy storage capacity of multiple battery cells 200. In this way, the energy storage capacity requirement of the battery pack 1000 can be met by adjusting the number of battery cells 200 in the box 100.

[0069] In the related art, battery cells 200 are first formed into a battery module, and then the battery module is connected in series in the box body 100. When the battery cells 200 form a battery module, materials are needed to fix or limit the battery cells 200. In this embodiment, the battery cells 200 are directly arranged in the box body 100, which can save materials in the production process of the battery pack 1000, thereby reducing production costs.

[0070] According to the battery pack 1000 of the second aspect of the present invention, the production cost can be reduced by setting the box body 100 according to the first aspect of the present invention. The energy storage capacity requirement is achieved by stacking battery cells 200, which can reduce the materials in the battery pack 1000 and further reduce the production cost.

[0071] In some embodiments of the present invention, Figure 5 and Figure 8As shown, the battery pack 1000 further includes: a busbar support 300, which is arranged on one side of the battery cell 200 in the thickness direction of the end plate 10, and a first limiting protrusion 23 is formed on the side of the side plate 20 facing the battery cell 200, and the busbar support 300 is matched with the first limiting protrusion 23. During the production process, after the battery cell 200 is loaded into the box body 100, the busbar support 300 is loaded into the box body 100 and the busbar support 300 is brought into contact with the first limiting protrusion 23, and then the busbar is welded to the pole of the battery cell 200 on the busbar support 300, so that the first limiting protrusion 23 can position the busbar support 300, so that the busbar support 300 can be quickly installed in place, and the first limiting protrusion 23 can limit the displacement of the busbar support 300, reducing the difficulty of welding the busbar to the pole.

[0072] In some embodiments of the utility model, a second limiting protrusion and a third limiting protrusion are respectively formed on the side of the front cover plate 40 and the rear cover plate 50 facing the battery cell 200, and the bus bracket 300 cooperates with the first limiting protrusion 23, the second limiting protrusion and the third limiting protrusion on the side plate 20. In this way, the first limiting protrusion 23, the second limiting protrusion and the third limiting protrusion can limit and position the bus bracket 300 at multiple positions, thereby improving the positioning accuracy of the bus bracket 300 during the assembly process and the reliability of limiting the bus bracket 300.

[0073] In some embodiments of the utility model, the side panel 20 is adhesively connected to the multiple battery cells 200. During the production process, glue is first applied to the side panel 20 or the multiple battery cells 200, and then the side panel 20 and the multiple battery cells 200 are attached and gradually pressed until the distance between the two side panels 20 reaches the designed distance. In this way, the connection operation between the side panel 20 and the multiple battery cells 200 is relatively simple, and the side panel 20 can limit the displacement of the multiple battery cells 200, thereby improving the structural stability of the battery pack 1000.

[0074] In some embodiments of the present invention, Figure 8 As shown, the battery pack 1000 also includes: an insulating sheet 310, an electrical bracket 320 and a battery management system 330. The electrical bracket 320 is arranged on the side of the bus bracket 300 away from the battery cell 200. The electrical bracket 320 is snap-connected to the bus bracket 300. The battery management system 330 is fixed on the electrical bracket 320, and the battery management system 330 is bolted to the electrical bracket 320. The insulating sheet 310 is arranged between the battery management system 330 and the bus.

[0075] The battery management system 330 can control the operation of the battery pack 1000 , and the insulating sheet 310 can insulate the busbar from the battery management system 330 .

[0076] When the energy storage device 10000 is discharging to the outside, the battery management system 330 controls the current conduction in the battery pack 1000 and collects parameters such as current and voltage. After determining that there is no problem with the line, multiple battery cells 200 participate in the discharge, and the currents on multiple battery packs 1000 are converged and output to the external load.

[0077] In some embodiments of the present invention, Figure 5 As shown, a high-voltage harness interface 24 and a low-voltage harness interface 25 are respectively provided on one side of the two side panels 20 close to the battery cell 200. The high-voltage harness interface 24 is connected to the high-voltage harness in the battery pack 1000, and the low-voltage harness interface 25 is connected to the low-voltage harness in the battery pack 1000. In this way, the high-voltage harness interface 24 and the low-voltage harness interface 25 can be separated, and the distance between the high-voltage harness interface 24 and the low-voltage harness interface 25 is large, so that the safety of the battery pack 1000 can be further improved.

[0078] Reference below Figure 1-Figure 8 An energy storage device 10000 according to an embodiment of the third aspect of the utility model is described.

[0079] According to the energy storage device 10000 of the third aspect of the utility model, Figure 1 and Figure 2 As shown, it includes: at least one battery pack 1000 according to the above-mentioned embodiment of the second aspect of the utility model.

[0080] The energy storage device 10000 according to the third aspect of the present invention can reduce production costs by providing the battery pack 1000 according to the second aspect of the present invention.

[0081] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown, there are multiple battery packs 1000, for example, there may be two, three or four battery packs 1000, and the multiple battery packs 1000 are stacked in the thickness direction of the end plate 10, and the battery pack 1000 includes two end plates 10, and the two end plates 10 are arranged at intervals in the thickness direction. The end plate 10 located at the first end of the battery pack 1000 is the first end plate 13, and the end plate 10 located at the second end of the battery pack 1000 is the second end plate, and the first end plate 13 is formed with a first mounting protrusion 131 and a first mounting groove 132 on the side away from the battery cell 200, and the second end plate is formed with a second mounting protrusion and a second mounting groove on the side away from the battery cell 200, and the first mounting protrusion 131 is matched with the second mounting groove, and the second mounting protrusion is matched with the first mounting groove 132 to realize the connection between two adjacent battery packs 1000.

[0082] In this way, during the assembly process, the first end plate 13 and the second end plate on the two adjacent battery packs 1000 are fitted together, and the first mounting protrusion 131 is inserted into the second mounting groove, and the second mounting protrusion is inserted into the first mounting groove 132 to achieve the connection between the two adjacent battery packs 1000. The operation is simple and convenient, and can improve production efficiency.

[0083] Among them, preferably, the first mounting protrusion 131, the first mounting groove 132, the second mounting protrusion and the second mounting groove can be multiple, and the first mounting protrusion 131 and the first mounting groove 132 are symmetrically distributed, and the second mounting protrusion and the second mounting groove are symmetrically distributed, so that the first end plate 13 and the second end plate can use the same mold during the production process, thereby further reducing the production cost.

[0084] In some embodiments of the present invention, Figure 4 As shown, a handle opening 133 is formed on the first end plate 13 and penetrates the first end plate 13 along the thickness direction. In this way, during the assembly process, the operator can hold the battery pack 1000 through the handle opening 133, thereby further improving production efficiency.

[0085] In some embodiments of the present invention, Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the end plates 10 are arranged at the upper and lower ends of the battery pack 1000, and the first end plate 13 is arranged at the upper end of the battery pack 1000, and the second end plate is arranged at the lower end of the battery pack 1000. The energy storage device 10000 also includes: a top cover 3000 and a base 4000. The top cover 3000 is connected to the first end plate 13 located at the uppermost end of the energy storage device 10000. The lower side of the top cover 3000 is formed with a third mounting protrusion 3100 and a third mounting groove 3200. The third mounting The protrusion 3100 cooperates with the first mounting groove 132, and the first mounting protrusion 131 cooperates with the third mounting groove 3200 to connect the top cover 3000 to the first end plate 13; the base 4000 is connected to the second end plate located at the lower end of the energy storage device 10000, and a fourth mounting protrusion and a fourth mounting groove are formed on the upper side of the base 4000. The fourth mounting protrusion cooperates with the second mounting groove, and the second mounting protrusion cooperates with the fourth mounting groove to connect the base 4000 to the second end plate.

[0086] Among them, the top cover 3000 can provide protection for the battery pack 1000 on the upper side of the energy storage device 10000, the base 4000 can provide support for the energy storage device 10000, and the installation operation of the top cover 3000 and the base 4000 is relatively simple, which can further improve production efficiency.

[0087] In some embodiments of the present invention, Figure 2As shown, the energy storage device 10000 further includes: a mounting bracket 2000, the mounting bracket 2000 extends along the thickness direction of the end plate 10, and the mounting bracket 2000 is respectively connected to the multiple battery packs 1000. By providing the mounting bracket 2000, the mounting bracket 2000 can realize the installation of the energy storage device 10000 in the environment, and the mounting bracket 2000 can provide support for the multiple battery packs 1000, thereby improving the structural stability of the energy storage device 10000.

[0088] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the mounting bracket 2000 includes: a first bracket 2100 and a second bracket 2200. A plug-in protrusion is formed at one end of the first bracket 2100, and a plug-in interface is formed at one end of the second bracket 2200. The plug-in protrusion is plugged into the plug-in interface, and the plug-in protrusion is fixed in the plug-in interface by bolts. In this way, during the assembly process of the first bracket 2100 and the second bracket 2200, rapid positioning can be achieved, and the connection strength of the first bracket 2100 and the second bracket 2200 can be guaranteed.

[0089] In some embodiments of the utility model, the first bracket 2100 and the base 4000 are connected by bolts, the first bracket 2100 and the second bracket 2200 are provided with hanging ears, and the rear cover plate 50 is provided with hooks, and the hanging ears are matched with the hooks. During the assembly process, the first bracket 2100 and the second bracket 2200 are first hung on the rear cover plate 50 through the hanging ears and the hooks, and then the first bracket 2100 and the base 4000 are connected by bolts, thereby realizing the connection between the mounting bracket 2000 and multiple battery packs 1000, and the operation is convenient.

[0090] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0091] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0092] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0094] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A box, characterized in that: include: An end plate, wherein a positioning groove is formed on one side of the end plate in a thickness direction; A side plate, the side plate being connected to a side of the end plate provided with the positioning groove, and a positioning protrusion protruding toward the end plate is formed at one end of the side plate facing the end plate, and the positioning protrusion is matched in the positioning groove; A fixing member is disposed between the positioning protrusion and a side wall of the positioning groove, and is used to fix the positioning protrusion in the positioning groove.

2. The box according to claim 1, characterized in that: The side wall of the positioning groove is formed with a first fixing groove, the positioning protrusion is formed with a second fixing groove on one side in the thickness direction of the side plate, the first fixing groove is opposite to the second fixing groove, and the fixing member is arranged in the first fixing groove and the second fixing groove.

3. The box according to claim 2, characterized in that: The fixing member is a fixing pin, the positioning protrusion and the positioning groove extend along a first direction, the first direction is perpendicular to the thickness direction of the side plate and the thickness direction of the end plate, and the opening size of the positioning groove gradually decreases in the direction from the side plate toward the end plate. The first fixing groove penetrates through the side wall of the positioning groove in the first direction, and the second fixing groove penetrates through the positioning protrusion along the first direction.

4. The box according to any one of claims 1 to 3, characterized in that: There are two end plates and two side plates, the two end plates are arranged at intervals in the thickness direction, the two side plates are arranged at intervals in the thickness direction, and the two side plates are connected between the two end plates. The box body also includes: a front cover plate and a rear cover plate, wherein the front cover plate and the rear cover plate are respectively covered at both ends of the end plate and the side plate in a first direction to enclose the box body, and the first direction is perpendicular to the thickness direction of the side plate and the thickness direction of the end plate.

5. The box according to claim 4, characterized in that: The end plate is formed with a first fixing hole penetrating the end plate along the first direction, the side plate is formed with a second fixing hole penetrating the side plate along the first direction, the front cover plate is formed with a third fixing hole, and the rear cover plate is formed with a fourth fixing hole penetrating the rear cover plate along the thickness direction. The fasteners pass through the fourth fixing hole, the first fixing hole and the third fixing hole in sequence, so that the front cover plate and the rear cover plate are connected to the two ends of the end plate. The fastener passes through the fourth fixing hole, the second fixing hole and the third fixing hole in sequence, so that the front cover plate and the rear cover plate are connected to the two ends of the side plate.

6. A battery pack, characterized in that: include: The box body according to any one of claims 1 to 5; A plurality of battery cells are stacked and arranged in the box.

7. The battery pack according to claim 6, characterized in that: Also includes: A busbar bracket is arranged on one side of the battery cell in the thickness direction of the end plate. A first limiting protrusion is also formed on the side of the side plate facing the battery cell, and the busbar bracket cooperates with the first limiting protrusion.

8. An energy storage device, characterized in that: include: At least one battery pack as claimed in claim 6 or 7.

9. The energy storage device according to claim 8, characterized in that: There are a plurality of battery packs, and the plurality of battery packs are stacked in a thickness direction of the end plate. The battery pack includes two end plates, which are spaced apart in the thickness direction, the end plate located at the first end of the battery pack is a first end plate, and the end plate located at the second end of the battery pack is a second end plate. A first mounting protrusion and a first mounting groove are formed on a side of the first end plate away from the battery cell, and a second mounting protrusion and a second mounting groove are formed on a side of the second end plate away from the battery cell. The first mounting protrusion fits in the second mounting groove, and the second mounting protrusion fits in the first mounting groove to connect the two adjacent battery packs.

10. The energy storage device according to claim 9, characterized in that: Also includes: A mounting bracket extends along a thickness direction of the end plate, and the mounting bracket is respectively connected to the plurality of battery packs.

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