Energy storage battery connecting structure and energy storage battery device

Abstract

The utility model relates to the technical field of energy storage, and discloses an energy storage battery connecting structure and an energy storage battery device, the energy storage battery connecting structure comprises: end plates arranged at two sides of a second direction of a battery module; the end plate comprises a first main plate body, first connecting parts located on the two sides of the first main plate body in the third direction and a second connecting part located on the side, close to the base body in the first direction, of the first main plate body, and the first connecting parts and the second connecting part are arranged in an angle mode. The first fastener is suitable for detachably connecting the first connecting part with the battery module, and the first fastener is suitable for jointly connecting the end plate and the battery module to form a battery assembly; and the second fastener is suitable for detachably connecting the second connecting part with the base body. According to the energy storage battery connecting structure provided by the utility model, parts required for fixing the battery are reduced, and the difficulty in disassembling and assembling the battery is reduced.

Description

Technical Field

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

[0002] The household balcony energy storage power supply is mainly suitable for storing the surplus electric energy from the solar photovoltaic panel, so as to supply power to the household at night or on cloudy days when the solar energy output is insufficient. However, the battery fixing device of the existing household balcony energy storage power supply has more components and is difficult to disassemble and assemble. Summary of the Utility Model

[0003] In view of this, the utility model provides an energy storage battery connection structure and an energy storage battery device to solve the problems that the battery fixing device of the existing household balcony energy storage power supply has more components and is difficult to disassemble and assemble.

[0004] In the first aspect, the utility model provides an energy storage battery connection structure, which is suitable for connecting a battery module and a base assembly. The base assembly includes a base body, and the battery module is arranged on one side of the base body in the first direction. The energy storage battery connection structure includes:

[0005] End plates are arranged on both sides of the battery module in the second direction. The end plate includes a first main board body, first connecting parts located on both sides of the first main board body in the third direction, and a second connecting part located on the side of the first main board body close to the base body along the first direction. The first connecting part and the second connecting part are arranged at an angle.

[0006] A first fastener is suitable for detachably connecting the first connecting part with the battery module, and the first fastener is suitable for connecting the end plate and the battery module together to form a battery assembly.

[0007] A second fastener is suitable for detachably connecting the second connecting part with the base body.

[0008] Advantageous Effects: For the energy storage battery connection structure provided in this embodiment, by arranging end plates on both sides of the battery module in the second direction, and detachably connecting the first connecting part of the end plate with the battery module through the first fastener, the end plate and the battery module are connected together to form a battery assembly; by detachably connecting the second connecting part of the end plate with the base body through the second fastener, the fixing of the battery assembly on the base body is realized; by loosening the second fastener, the second connecting part of the end plate is separated from the base body, so as to realize the disassembly and separation of the battery assembly and the base assembly; furthermore, through the end plate, the first fastener and the second fastener, the fixing, disassembly and assembly of the battery module can be realized, the number of components required for battery fixing is reduced, and the difficulty of battery disassembly and assembly is reduced.

[0009] In an alternative embodiment, a first through hole is formed in the first connecting portion; a first screw hole is formed in the outer wall of the frame of the battery module; the first fastener includes a first screw, and the first screw is adapted to pass through the first through hole and be threadedly connected to the first screw hole;

[0010] A second through hole is formed in the second connecting portion; a third through hole is formed in the base body, and the third through hole is coaxially arranged with the second through hole; the second fastener includes a second screw and a nut, and the second screw is adapted to pass through the third through hole and the second through hole and be threadedly connected to the nut.

[0011] Beneficial effects: By threading the first screw through the first through hole and threadedly connecting it to the first screw hole, the end plate can be connected to the battery module to form a battery assembly, facilitating the assembly with the base assembly, and at the same time, the detachable connection between the end plate and the battery module can be achieved, facilitating disassembly, maintenance, and replacement; by threading the second screw through the third through hole and the second through hole and threadedly connecting it to the nut, the detachable connection between the battery assembly and the base body can be achieved. When the battery assembly needs to be detached from the base body, the battery assembly can be detached from the base body by loosening the nut, reducing the number of components required for battery fixation and lowering the difficulty of battery disassembly and assembly.

[0012] In an alternative embodiment, a third connecting portion is formed on the side of the first main board body away from the base body along the first direction, and the third connecting portion is disposed opposite to the second connecting portion along the first direction; the end plate further includes a rib, one side of the rib in the first direction is connected to the second connecting portion, and the other side is connected to the third connecting portion.

[0013] Beneficial effects: By providing a rib between the third connecting portion and the second connecting portion, the structural strength of the end plate can be increased through the rib, thereby enhancing the stability of the overall structure and improving the seismic resistance of the overall structure.

[0014] In a second aspect, the present invention further provides an energy storage battery device, including:

[0015] A box body assembly, and the energy storage battery connection structure as described above; the box body assembly includes a box body;

[0016] The base body is disposed on one side of the box body in the first direction, and the base body is detachably connected to the box body;

[0017] An upper cover assembly, the upper cover assembly includes a heat dissipation plate, the heat dissipation plate is disposed on the side of the box body away from the base body along the first direction, and the heat dissipation plate is detachably connected to the box body;

[0018] The inner peripheral wall of the box body is adapted to jointly enclose a receiving cavity with the base body and the heat dissipation plate, and the receiving cavity is adapted to receive the battery assembly.

[0019] Beneficial effects: For the energy storage battery device provided by the present utility model, through the provision of the above-mentioned energy storage battery connection structure, the second connection portion of the end plate is detachably connected to the base body through the second fastener, thereby realizing the fixation of the battery assembly on the base body; by loosening the second fastener, the second connection portion of the end plate is separated from the base body, thereby realizing the disassembly and separation of the battery assembly and the base assembly, reducing the components required for battery fixation and lowering the difficulty of battery disassembly and assembly.

[0020] In an alternative embodiment, the box assembly further includes a first sealing ring and a second sealing ring;

[0021] The first sealing ring is disposed between the box body and the base body, and the first sealing ring is adapted to seal between the box body and the base body;

[0022] The second sealing ring is disposed between the box body and the heat dissipation plate, and the second sealing ring is adapted to seal between the box body and the heat dissipation plate.

[0023] Beneficial effects: By providing a first sealing ring between the box body and the base body and a second sealing ring between the box body and the heat dissipation plate, during the assembly process, fastening is performed through screws, thereby realizing the sealing between the box body and the base body and between the box body and the heat dissipation plate, and further ensuring the waterproof performance of the energy storage battery device.

[0024] In an alternative embodiment, the box body is provided with a second screw hole on the side facing the base body along the first direction, the first sealing ring is provided with a fourth through hole, and the base body is provided with a fifth through hole. The second screw hole, the fourth through hole, and the fifth through hole are coaxially arranged; the box assembly further includes a third screw, and the third screw is adapted to pass through the fifth through hole and the fourth through hole and be threadedly connected to the second screw hole;

[0025] The box body is provided with a third screw hole on the side facing the heat dissipation plate along the first direction, the second sealing ring is provided with a sixth through hole, and the heat dissipation plate is provided with a seventh through hole. The third screw hole, the sixth through hole, and the seventh through hole are coaxially arranged; the box assembly further includes a fourth screw, and the fourth screw is adapted to pass through the seventh through hole and the sixth through hole and be threadedly connected to the third screw hole.

[0026] Beneficial effects: It can not only ensure the waterproof performance of the energy storage battery device, but also facilitate disassembly, assembly, and maintenance.

[0027] In an alternative embodiment, the upper cover assembly further includes a filter board and a DC-DC converter, and both the filter board and the DC-DC converter are disposed on the side of the heat dissipation plate facing the base body along the first direction;

[0028] The heat dissipation plate is made of a heat-conducting material; the upper cover assembly further includes a first heat-conducting pad and a second heat-conducting pad. The first heat-conducting pad is disposed between the filter board and the heat dissipation plate. One side of the first heat-conducting pad in the first direction is attached to the filter board, and the other side is attached to the heat dissipation plate; the second heat-conducting pad is disposed between the DC-DC converter and the heat dissipation plate. One side of the second heat-conducting pad in the first direction is attached to the DC-DC converter, and the other side is attached to the heat dissipation plate.

[0029] Beneficial effects: Thus, the heat generated by the first heat-conducting pad and the second heat-conducting pad is conducted to the heat dissipation plate. The heat dissipation plate is made of a heat-conducting material to facilitate timely dissipation of heat to the external environment, thereby realizing timely heat dissipation of the filter board and the DC-DC converter and effectively reducing the temperatures of the filter board and the DC-DC converter.

[0030] In an alternative embodiment, a heat dissipation boss is formed on one side of the heat dissipation plate away from the base body in the first direction. A heat dissipation groove is formed at intervals between every two adjacent heat dissipation bosses. The heat dissipation bosses and the heat dissipation grooves are adapted to increase the heat dissipation area of the heat dissipation plate.

[0031] Beneficial effects: By forming a plurality of heat dissipation bosses and heat dissipation grooves on the heat dissipation plate, the heat exchange area between the heat dissipation plate and the air is increased, which is conducive to timely dissipation of heat to the external environment.

[0032] In an alternative embodiment, the energy storage battery device further includes a battery management system assembly, and the battery management system assembly is built in the accommodation cavity; the battery management system assembly includes a battery management system main board, a support beam, and a mounting bracket;

[0033] The support beam is disposed on both sides of the battery module in the third direction, and the support beam is welded to the base body;

[0034] The mounting bracket includes two first brackets and a second bracket. One side of the first bracket in the first direction is detachably connected to the support beam, and the other side is detachably connected to the second bracket; the second bracket is disposed on one side of the battery module away from the base body in the first direction, and the second bracket is adapted to support and fix the battery management system main board.

[0035] Beneficial effects: The support beam is welded to one side of the base body in the first direction. The first bracket of the mounting bracket is detachably connected to the support beam through a bolt fastener, which facilitates disassembly, assembly, and maintenance of the battery management system assembly. At the same time, the first bracket and the second bracket are detachably connected through a bolt fastener, which facilitates disassembly, assembly, and maintenance of the battery management system main board.

[0036] In an alternative embodiment, the first bracket includes a second main board body and first folding portions located on both sides of the second main board body in the second direction. The first folding portions are bent from the second main board body in the third direction away from the battery module. The first folding portions are adapted to limit and protect the battery module;

[0037] The first bracket further includes a second folding portion, which is disposed on the side of the second main board body close to the base body along the first direction, and the second folding portion is adapted to be connected to the support beam by bolts and / or screws;

[0038] The first bracket further includes a third folding portion, which is disposed on the side of the second main board body close to the heat dissipation plate along the first direction, and the third folding portion is adapted to be connected to the second bracket by bolts and / or screws.

[0039] Beneficial effects: When the energy storage battery device is in an abnormal overturning or bumpy state, it can abut against the inner side wall of the box body through the first folding portion, so as to limit and protect the battery module in the third direction; by providing the second folding portion on the first bracket, the second folding portion is connected to the support beam by bolts and / or screws, which facilitates the disassembly and assembly between the battery management system assembly and the base body; by providing the third folding portion on the first bracket, the third folding portion is connected to the second bracket by bolts and / or screws, which is more convenient for the disassembly and assembly of the battery management system assembly. Description of the Drawings

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0041] Figure 1 A three-dimensional view of a battery assembly according to an embodiment of the present invention;

[0042] Figure 2 is Figure 1 A partial enlarged schematic view of part A in

[0043] Figure 3 An exploded view of a battery assembly according to an embodiment of the present invention;

[0044] Figure 4 is Figure 3 A partial enlarged schematic view of part B in

[0045] Figure 5 A three-dimensional view of an end plate of a battery assembly according to an embodiment of the present invention;

[0046] Figure 6 An assembly drawing of a battery assembly and a base body according to an embodiment of the present invention;

[0047] Figure 7 is Figure 6Partial enlarged schematic diagram at position C;

[0048] Figure 8 Explosion diagram of an energy storage battery device according to an embodiment of the present utility model;

[0049] Figure 9 First explosion diagram of a box body assembly according to an embodiment of the present utility model;

[0050] Figure 10 Second explosion diagram of a box body assembly according to an embodiment of the present utility model;

[0051] Figure 11 Explosion diagram of an upper cover assembly according to an embodiment of the present utility model;

[0052] Figure 12 Is Figure 11 Partial enlarged schematic diagram at position D in;

[0053] Figure 13 Stereogram of a battery management system assembly according to an embodiment of the present utility model;

[0054] Figure 14 Explosion diagram of a battery management system assembly according to an embodiment of the present utility model;

[0055] Figure 15 Assembly drawing of a battery management system assembly and a base assembly according to an embodiment of the present utility model;

[0056] Figure 16 Is Figure 15 Partial enlarged schematic diagram at position E in;

[0057] Figure 17 Stereogram of an energy storage battery device according to an embodiment of the present utility model;

[0058] Figure 18 Assembly drawing of a box body main body, a wire harness fixing ring and a fire extinguisher of a box body assembly according to an embodiment of the present utility model.

[0059] Explanation of reference numerals:

[0060] 10. Base assembly; 11. Base body; 111. Third through hole; 112. Fifth through hole; 12. Third screw;

[0061] 20. Battery assembly; 21. Battery module; 211. First screw hole; 22. End plate; 221. First main board body; 222. First connecting portion; 2221. First through hole; 223. Second connecting portion; 2231. Second through hole; 224. Third connecting portion; 225. Rib; 23. First fastener; 231. First screw; 24. Second fastener; 241. Second screw; 242. Nut;

[0062] 30. Housing assembly; 31. Housing body; 311. Accommodation cavity; 312. Second screw hole; 313. Third screw hole; 32. First sealing ring; 321. Fourth through hole; 33. Second sealing ring; 331. Sixth through hole; 34. Wall-mounted bracket; 35. Explosion-proof valve; 36. Wiring harness fixing ring; 37. Fire extinguisher;

[0063] 40. Upper cover assembly; 41. Heat dissipation plate; 411. Seventh through hole; 412. Heat dissipation boss; 413. Heat dissipation groove; 42. Fourth screw; 43. Filter board; 44. DC-DC converter; 45. First heat conduction pad; 46. Second heat conduction pad;

[0064] 50. Battery management system assembly; 51. Battery management system main board; 52. Support beam; 53. Mounting bracket; 531. First bracket; 5311. Second main board body; 5312. First folding part; 5313. Second folding part; 5314. Third folding part; 532. Second bracket. Detailed implementation manners

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0066] The following will be described Figures 1 to 18 in conjunction with

[0067] According to an embodiment of the present utility model, on the one hand, a connection structure for an energy storage battery is provided, which is suitable for connecting a battery module 21 and a base assembly 10. The base assembly 10 includes a base body 11, and the battery module 21 is disposed on one side of the base body 11 in a first direction. The connection structure for the energy storage battery includes:

[0068] An end plate 22. Please refer to Figure 1 as shown. The end plate 22 is disposed on both sides of the battery module 21 in a second direction. Please refer to Figure 2 as shown. The end plate 22 includes a first main board body 221, first connection parts 222 located on both sides of the first main board body 221 in a third direction, and a second connection part 223 located on the side of the first main board body 221 close to the base body 11 along the first direction. The first connection parts 222 and the second connection part 223 are arranged at an angle.

[0069] The first fastener 23 is adapted to detachably connect the first connecting portion 222 to the battery module 21. The first fastener 23 is adapted to commonly connect the end plate 22 and the battery module 21 to form a battery assembly 20;

[0070] The second fastener 24 is adapted to detachably connect the second connecting portion 223 to the base body 11.

[0071] For the energy storage battery connection structure provided in this embodiment, end plates 22 are arranged on both sides of the battery module 21 in the second direction, and the first connecting portion 222 of the end plate 22 is detachably connected to the battery module 21 through the first fastener 23, so as to commonly connect the end plate 22 and the battery module 21 to form a battery assembly 20; the second connecting portion 223 of the end plate 22 is detachably connected to the base body 11 through the second fastener 24, so as to fix the battery assembly 20 on the base body 11; by loosening the second fastener 24, the second connecting portion 223 of the end plate 22 is separated from the base body 11, so as to realize the disassembly and separation of the battery assembly 20 from the base assembly 10; furthermore, through the end plate 22 and the first fastener 23 and the second fastener 24, the fixing, disassembly and assembly of the battery module 21 can be realized, the components required for battery fixing are reduced, and the difficulty of battery disassembly and assembly is reduced.

[0072] Furthermore, the first connecting portion 222 and the second connecting portion 223 and the first main board body 221 are of an integrally formed structure.

[0073] In some embodiments, please refer to Figure 5 As shown, the first connecting portion 222 is provided with a first through hole 2221; a first screw hole 211 is provided on the outer wall of the frame of the battery module 21; the first fastener 23 includes a plurality of first screws 231, and the first screws 231 are adapted to pass through the first through hole 2221 and be threadedly connected to the first screw hole 211;

[0074] Please also refer to Figure 7 As shown, the second connecting portion 223 is provided with a second through hole 2231; a third through hole 111 is provided on the base body 11, and the third through hole 111 is coaxially arranged with the second through hole 2231; the second fastener 24 includes a plurality of second screws 241 and a plurality of nuts 242, and the second screws 241 are adapted to pass through the third through hole 111 and the second through hole 2231 and be threadedly connected to the nuts 242.

[0075] In this embodiment, the first screw 231 passes through the first through hole 2221 and is threadedly connected to the first threaded hole 211, which can not only connect the end plate 22 and the battery module 21 to form the battery assembly 20, facilitating the assembly with the base assembly 10, but also realize the detachable connection between the end plate 22 and the battery module 21, facilitating disassembly, maintenance and replacement; the second screw 241 passes through the third through hole 111 and the second through hole 2231 and is threadedly connected to the nut 242, thereby realizing the detachable connection between the battery assembly 20 and the base body 11. When the battery assembly 20 needs to be detached from the base body 11, the battery assembly 20 can be detached from the base body 11 by loosening the nut 242, reducing the components required for battery fixation and lowering the difficulty of battery disassembly and assembly.

[0076] Further, the first screw 231 can be a cross-recessed pan head screw.

[0077] Further, the second screw 241 can be a press rivet screw and is fixed to the base body 11 through the third through hole 111; the nut 242 can be a flange nut.

[0078] In some embodiments, please also refer to Figure 4 and Figure 5 As shown, on the side of the first main board body 221 away from the base body 11 along the first direction, a third connecting portion 224 is formed, and the third connecting portion 224 and the second connecting portion 223 are arranged opposite to each other along the first direction; the end plate 22 further includes a plurality of ribs 225, one side of the plurality of ribs 225 in the first direction is connected to the second connecting portion 223, and the other side is connected to the third connecting portion 224.

[0079] In this embodiment, by arranging the ribs 225 between the third connecting portion 224 and the second connecting portion 223, the structural strength of the end plate 22 is increased through the ribs 225, thereby enhancing the stability of the overall structure and improving the seismic resistance of the overall structure.

[0080] According to an embodiment of the present invention, on the other hand, an energy storage battery device is also provided, including:

[0081] A box body assembly 30 and the energy storage battery connection structure as described above; the box body assembly 30 includes a box body main body 31;

[0082] The base body 11 is arranged on one side of the box body main body 31 in the first direction, and the base body 11 is detachably connected to the box body main body 31;

[0083] An upper cover assembly 40, the upper cover assembly 40 includes a heat dissipation plate 41, the heat dissipation plate 41 is arranged on the side of the box body main body 31 away from the base body 11 along the first direction, and the heat dissipation plate 41 is detachably connected to the box body main body 31;

[0084] The inner circumferential wall of the box body 31 is adapted to jointly enclose a receiving cavity 311 with the base body 11 and the heat dissipation plate 41, and the battery assembly 20 is adapted to be received in the receiving cavity 311.

[0085] For the energy storage battery device provided by the present utility model, by providing the above-mentioned energy storage battery connection structure, the second connection portion 223 of the end plate 22 is detachably connected to the base body 11 through the second fastener 24, so as to realize the fixation of the battery assembly 20 on the base body 11; by loosening the second fastener 24, the second connection portion 223 of the end plate 22 is separated from the base body 11, so as to realize the disassembly and separation of the battery assembly 20 from the base assembly 10, reducing the parts required for battery fixation and lowering the difficulty of battery disassembly and assembly.

[0086] In some embodiments, please refer to Figure 9 as shown, the box body assembly 30 further includes a first sealing ring 32 and a second sealing ring 33;

[0087] Please also combine with Figure 8 as shown, the first sealing ring 32 is disposed between the box body 31 and the base body 11, and the first sealing ring 32 is adapted to seal between the box body 31 and the base body 11;

[0088] The second sealing ring 33 is disposed between the box body 31 and the heat dissipation plate 41, and the second sealing ring 33 is adapted to seal between the box body 31 and the heat dissipation plate 41.

[0089] In this embodiment, by providing the first sealing ring 32 between the box body 31 and the base body 11, and at the same time providing the second sealing ring 33 between the box body 31 and the heat dissipation plate 41, during the assembly process, fastening is performed by screws, so as to realize the sealing between the box body 31 and the base body 11 and between the box body 31 and the heat dissipation plate 41, thereby ensuring the waterproof performance of the energy storage battery device.

[0090] In some embodiments, please refer to Figure 9 as shown, the box body 31 is provided with a second screw hole 312 on the side facing the base body 11 along the first direction, the first sealing ring 32 is provided with a fourth through hole 321, the base body 11 is provided with a fifth through hole 112, and the second screw hole 312, the fourth through hole 321 and the fifth through hole 112 are coaxially arranged; the box body assembly 30 further includes a third screw 12, and the third screw 12 is adapted to pass through the fifth through hole 112 and the fourth through hole 321 and be threadedly connected to the second screw hole 312;

[0091] Please refer to Figure 10As shown, a third screw hole 313 is formed on one side of the box body 31 facing the heat dissipation plate 41 along the first direction. A sixth through hole 331 is formed on the second sealing ring 33, and a seventh through hole 411 is formed on the heat dissipation plate 41. The third screw hole 313, the sixth through hole 331, and the seventh through hole 411 are coaxially arranged. The box body assembly 30 further includes a fourth screw 42, and the fourth screw 42 is adapted to pass through the seventh through hole 411 and the sixth through hole 331 and be threadedly connected to the third screw hole 313.

[0092] In this embodiment, the third screw 12 passes through the fifth through hole 112 and the fourth through hole 321 and is threadedly connected to the second screw hole 312, thereby realizing the fastening between the box body 31 and the base body 11 and the first sealing ring 32. At the same time, the box body 31 and the base body 11 are sealed through the first sealing ring 32. The fourth screw 42 passes through the seventh through hole 411 and the sixth through hole 331 and is threadedly connected to the third screw hole 313, thereby realizing the fastening between the box body 31 and the heat dissipation plate 41 and the second sealing ring 33. At the same time, the box body 31 and the heat dissipation plate 41 are sealed through the second sealing ring 33, which can not only ensure the waterproof performance of the energy storage battery device, but also facilitate disassembly, installation, and maintenance.

[0093] Further, blind nuts can be embedded on both sides of the box body 31 in the first direction. The blind nuts are adapted to be threadedly connected to the third screw 12 and / or the fourth screw 42.

[0094] Further, the third screw 12 and the fourth screw 42 can be cross-recessed pan head screws.

[0095] In some embodiments, please refer to Figure 17 As shown, the box body assembly 30 further includes a wall hanging bracket 34. The wall hanging bracket 34 is arranged on the outer side wall of the box body 31, and the wall hanging bracket 34 is detachably connected to the box body 31 by bolts and / or screws.

[0096] Further, a gourd hole (not shown in the figure) is formed on the wall hanging bracket 34.

[0097] During the installation process, the expansion screw can be fixed on the wall first, and then the wall hanging bracket 34 is hooked to the expansion screw through the gourd hole, thereby fixing the energy storage battery device on the wall.

[0098] In some embodiments, please refer to Figure 17 As shown, the box body assembly 30 further includes an explosion-proof valve 35. The explosion-proof valve 35 is arranged on the outer side wall of the box body 31. The explosion-proof valve 35 is arranged on one side of the box body 31 close to the heat dissipation plate 41 along the first direction, and the explosion-proof valve 35 plays a role in waterproof and breathable.

[0099] In some embodiments, please refer to Figure 18As shown, the box assembly 30 further includes a wire harness fixing ring 36. The wire harness fixing ring 36 is fixedly arranged on the inner side wall of the box body 31 and is used for arranging the wire harness.

[0100] In some embodiments, please refer to Figure 18 As shown, the box assembly 30 further includes a fire extinguisher 37. The fire extinguisher 37 is built in the accommodation cavity 311. The fire extinguisher 37 is detachably connected to the box body 31 through riveting screws and flange nuts. The fire extinguisher 37 is used for extinguishing the fire on the battery in the state of battery thermal runaway.

[0101] Furthermore, the box assembly 30 further includes a male input head (not shown in the figure), a female input head (not shown in the figure), a male output head (not shown in the figure) and a female output head (not shown in the figure). The male input head and the female input head are arranged on one side of the box body 31 in the second direction, and the male output head and the female output head are arranged on the other side of the box body 31 in the second direction.

[0102] In some embodiments, please refer to Figure 11 As shown, the upper cover assembly 40 further includes a filter board 43 and a DC-DC converter 44. Both the filter board 43 and the DC-DC converter 44 are arranged on the side of the heat dissipation board 41 facing the base body 11 along the first direction;

[0103] The heat dissipation board 41 is made of a heat-conducting material; the upper cover assembly 40 further includes a first heat-conducting pad 45 and a second heat-conducting pad 46. The first heat-conducting pad 45 is arranged between the filter board 43 and the heat dissipation board 41. One side of the first heat-conducting pad 45 in the first direction is attached to the filter board 43, and the other side is attached to the heat dissipation board 41; the second heat-conducting pad 46 is arranged between the DC-DC converter 44 and the heat dissipation board 41. One side of the second heat-conducting pad 46 in the first direction is attached to the DC-DC converter 44, and the other side is attached to the heat dissipation board 41.

[0104] The DC-DC converter (DC-DC Converter, DCDC) is used to convert a DC voltage into another DC voltage with a different voltage value.

[0105] In this embodiment, by arranging the first heat-conducting pad 45 between the filter board 43 and the heat dissipation board 41, and at the same time arranging the second heat-conducting pad 46 between the DC-DC converter 44 and the heat dissipation board 41, the heat generated by the first heat-conducting pad 45 and the second heat-conducting pad 46 is conducted to the heat dissipation board 41. The heat dissipation board 41 is made of a heat-conducting material, so as to dissipate the heat to the external environment in time, thereby realizing the timely heat dissipation of the filter board 43 and the DC-DC converter 44 and effectively reducing the temperature of the filter board 43 and the DC-DC converter 44.

[0106] Furthermore, the heat dissipation board 41 can be made of aluminum.

[0107] In some embodiments, please refer to Figure 12 As shown, on one side of the heat dissipation plate 41 away from the base body 11 along the first direction, a plurality of heat dissipation bosses 412 are formed, and heat dissipation grooves 413 are formed at intervals between every two adjacent heat dissipation bosses 412. The heat dissipation bosses 412 and the heat dissipation grooves 413 are adapted to increase the heat dissipation area of the heat dissipation plate 41.

[0108] In this embodiment, by forming a plurality of heat dissipation bosses 412 and heat dissipation grooves 413 on the heat dissipation plate 41, the heat exchange area between the heat dissipation plate 41 and the air is increased, which is beneficial to dissipating heat to the external environment in time.

[0109] In some embodiments, please refer to Figure 13 As shown, the energy storage battery device further includes a battery management system assembly 50, and the battery management system assembly 50 is built in the accommodation cavity 311; the battery management system assembly 50 includes a battery management system main board 51, a support beam 52 and a mounting bracket 53;

[0110] Please also refer to Figure 15 As shown, the support beam 52 is arranged on both sides of the battery module 21 in the third direction, and the support beam 52 and the base body 11 are fixed by welding, so as to ensure the connection strength between the support beam 52 and the base body 11;

[0111] The mounting bracket 53 includes two first brackets 531 and a second bracket 532. One side of the first bracket 531 in the first direction can be detachably connected to the support beam 52 by bolts and / or screws, and the other side is detachably connected to the second bracket 532 by bolts and / or screws; the second bracket 532 is arranged on one side of the battery module 21 away from the base body 11 along the first direction, and the second bracket 532 is adapted to support and fix the battery management system main board 51.

[0112] The Battery Management System (BMS) is used to monitor and manage the use of the battery module 21.

[0113] In this embodiment, the support beam 52 is welded to one side of the base body 11 in the first direction, and the first bracket 531 of the mounting bracket 53 is detachably connected to the support beam 52 by bolt fasteners, which is convenient for disassembling, assembling and maintaining the battery management system assembly 50. At the same time, the first bracket 531 and the second bracket 532 are detachably connected by bolt fasteners, which is convenient for disassembling, assembling and maintaining the battery management system main board 51.

[0114] Furthermore, a press rivet nut is fixedly arranged on the second bracket 532, and then a cross recessed pan head screw passes through a preset through hole on the battery management system main board 51 and is threadedly connected to the press rivet nut, so as to realize the detachable connection between the battery management system main board 51 and the second bracket 532.

[0115] In some embodiments, refer to Figure 14 As shown, the first bracket 531 includes a second main board body 5311 and first folding portions 5312 located on both sides of the second main board body 5311 in the second direction. The first folding portions 5312 are bent from the second main board body 5311 in the third direction away from the battery module 21, and the first folding portions 5312 are adapted to limit and protect the battery module 21;

[0116] The first bracket 531 further includes a second folding portion 5313. The second folding portion 5313 is disposed on one side of the second main board body 5311 close to the base body 11 in the first direction, and the second folding portion 5313 is adapted to be bolted and / or screwed to the support beam 52;

[0117] The first bracket 531 further includes a third folding portion 5314. The third folding portion 5314 is disposed on one side of the second main board body 5311 close to the heat dissipation plate 41 in the first direction, and the third folding portion 5314 is adapted to be bolted and / or screwed to the second bracket 532.

[0118] In this embodiment, by providing the first folding portion 5312 on the first bracket 531, when the energy storage battery device is in an abnormal overturning or bumpy state, the first folding portion 5312 can abut against the inner side wall of the box body 31, so as to limit and protect the battery module 21 in the third direction; by providing the second folding portion 5313 on the first bracket 531, the second folding portion 5313 is bolted and / or screwed to the support beam 52, which facilitates the disassembly and assembly between the battery management system assembly 50 and the base body 11; by providing the third folding portion 5314 on the first bracket 531, the third folding portion 5314 is bolted and / or screwed to the second bracket 532, which is more convenient for the disassembly and assembly of the battery management system assembly 50.

[0119] The energy storage battery device provided in this embodiment mainly includes a base assembly 10, a battery assembly 20, a box body assembly 30, a top cover assembly 40, and a battery management system assembly 50. During the assembly process, first, the battery assembly 20 is fixed to the base assembly 10 through an energy storage battery connection structure, then the battery management system assembly 50 is fixed to the base assembly 10 through fasteners, then the box body assembly 30 is fixed to the base assembly 10 through fasteners, and finally the top cover assembly 40 is fixed to the box body assembly 30 through fasteners. The number of parts is small, most of them are fixed by fasteners, the fixing is firm, the structural stability is good, the anti-vibration ability is excellent, and the assembly is simple.

[0120] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connection structure for an energy storage battery, used to connect a battery module (21) and a base assembly (10). The base assembly (10) includes a base body (11), and the battery module (21) is arranged on one side of the base body (11) in a first direction. It is characterized in that, The energy storage battery connection structure includes: End plates (22) are arranged on both sides of the battery module (21) in the second direction; the end plates (22) include a first main board body (221), first connecting parts (222) located on both sides of the first main board body (221) in the third direction, and a second connecting part (223) located on one side of the first main board body (221) close to the base body (11) along the first direction, and the first connecting parts (222) and the second connecting part (223) are arranged at an angle. A first fastener (23) is adapted to detachably connect the first connecting part (222) and the battery module (21), and the first fastener (23) is adapted to jointly connect the end plate (22) and the battery module (21) to form a battery assembly (20). A second fastener (24) is adapted to detachably connect the second connecting part (223) and the base body (11).

2. The energy storage battery connection structure according to claim 1, characterized in that, A first through hole (2221) is formed in the first connecting part (222); a first screw hole (211) is formed in the outer wall of the frame of the battery module (21); the first fastener (23) includes a first screw (231), and the first screw (231) is adapted to pass through the first through hole (2221) and be threadedly connected to the first screw hole (211). A second through hole (2231) is formed in the second connecting part (223); a third through hole (111) is formed in the base body (11), and the third through hole (111) is coaxially arranged with the second through hole (2231); the second fastener (24) includes a second screw (241) and a nut (242), and the second screw (241) is adapted to pass through the third through hole (111) and the second through hole (2231) and be threadedly connected to the nut (242).

3. The energy storage battery connection structure according to claim 1, characterized in that, A third connecting part (224) is formed on one side of the first main board body (221) away from the base body (11) along the first direction, and the third connecting part (224) and the second connecting part (223) are arranged opposite to each other along the first direction; the end plate (22) further includes a rib (225), one side of the rib (225) in the first direction is connected to the second connecting part (223), and the other side is connected to the third connecting part (224).

4. A energy storage battery device, characterized in that, Including: A box body assembly (30) and the energy storage battery connection structure according to any one of claims 1 to 3 above; the box body assembly (30) includes a box body (31). The base body (11) is arranged on one side of the box body (31) in the first direction, and the base body (11) is detachably connected to the box body (31). An upper cover assembly (40), the upper cover assembly (40) includes a heat dissipation plate (41), the heat dissipation plate (41) is arranged on one side of the box body (31) away from the base body (11) along the first direction, and the heat dissipation plate (41) is detachably connected to the box body (31). The inner peripheral wall of the box body (31) is adapted to jointly enclose a receiving cavity (311) with the base body (11) and the heat dissipation plate (41), and the battery assembly (20) is adapted to be received in the receiving cavity (311).

5. The energy storage battery device according to claim 4, characterized in that, The box body assembly (30) further includes a first sealing ring (32) and a second sealing ring (33); The first sealing ring (32) is disposed between the box body (31) and the base body (11), and the first sealing ring (32) is adapted to seal between the box body (31) and the base body (11); The second sealing ring (33) is disposed between the box body (31) and the heat dissipation plate (41), and the second sealing ring (33) is adapted to seal between the box body (31) and the heat dissipation plate (41).

6. The energy storage battery device according to claim 5, wherein, A second screw hole (312) is formed in one side of the box body (31) facing the base body (11) along a first direction. A fourth through hole (321) is formed in the first sealing ring (32), and a fifth through hole (112) is formed in the base body (11). The second screw hole (312), the fourth through hole (321), and the fifth through hole (112) are coaxially arranged. The box body assembly (30) further includes a third screw (12), and the third screw (12) is adapted to pass through the fifth through hole (112) and the fourth through hole (321) and be threadedly connected to the second screw hole (312); A third screw hole (313) is formed in one side of the box body (31) facing the heat dissipation plate (41) along the first direction. A sixth through hole (331) is formed in the second sealing ring (33), and a seventh through hole (411) is formed in the heat dissipation plate (41). The third screw hole (313), the sixth through hole (331), and the seventh through hole (411) are coaxially arranged. The box body assembly (30) further includes a fourth screw (42), and the fourth screw (42) is adapted to pass through the seventh through hole (411) and the sixth through hole (331) and be threadedly connected to the third screw hole (313).

7. The energy storage battery device according to claim 4, characterized in that, The upper cover assembly (40) further includes a filter board (43) and a DC-DC converter (44), and both the filter board (43) and the DC-DC converter (44) are disposed on one side of the heat dissipation plate (41) facing the base body (11) along the first direction; The heat dissipation plate (41) is made of a heat-conducting material; the upper cover assembly (40) further includes a first heat-conducting pad (45) and a second heat-conducting pad (46). The first heat-conducting pad (45) is disposed between the filter plate (43) and the heat dissipation plate (41). One side of the first heat-conducting pad (45) in the first direction is attached to the filter plate (43), and the other side is attached to the heat dissipation plate (41). The second heat-conducting pad (46) is disposed between the DC-DC converter (44) and the heat dissipation plate (41). One side of the second heat-conducting pad (46) in the first direction is attached to the DC-DC converter (44), and the other side is attached to the heat dissipation plate (41).

8. The energy storage battery device according to claim 7, wherein On one side of the heat dissipation plate (41) away from the base body (11) along the first direction, heat dissipation bosses (412) are formed. Heat dissipation grooves (413) are formed at intervals between every two adjacent heat dissipation bosses (412). The heat dissipation bosses (412) and the heat dissipation grooves (413) are adapted to increase the heat dissipation area of the heat dissipation plate (41).

9. The energy storage battery device according to any one of claims 4-8, characterized in that The energy storage battery device further includes a battery management system assembly (50), and the battery management system assembly (50) is built in the accommodation cavity (311); the battery management system assembly (50) includes a battery management system main board (51), a support beam (52) and a mounting bracket (53). The support beam (52) is disposed on both sides of the battery module (21) in the third direction, and the support beam (52) is welded to the base body (11). The mounting bracket (53) includes two first brackets (531) and a second bracket (532). One side of the first bracket (531) in the first direction is detachably connected to the support beam (52), and the other side is detachably connected to the second bracket (532). The second bracket (532) is disposed on one side of the battery module (21) away from the base body (11) along the first direction, and the second bracket (532) is adapted to support and fix the battery management system main board (51).

10. The energy storage battery device according to claim 9, characterized in that, The first bracket (531) includes a second main board body (5311) and first folding parts (5312) located on both sides of the second main board body (5311) in the second direction. The first folding parts (5312) are bent from the second main board body (5311) in the third direction away from the battery module (21), and the first folding parts (5312) are adapted to limit and protect the battery module (21). The first bracket (531) further includes a second folding part (5313). The second folding part (5313) is disposed on one side of the second main board body (5311) close to the base body (11) in the first direction, and the second folding part (5313) is adapted to be bolted and / or screwed to the support beam (52). The first bracket (531) further includes a third folding portion (5314). The third folding portion (5314) is disposed on a side of the second main board body (5311) close to the heat dissipation plate (41) along the first direction. The third folding portion (5314) is adapted to be bolted and / or screwed to the second bracket (532).

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