Energy storage device

Abstract

An energy storage device provided by the utility model comprises a master controller, a power supply module, a top shell, a bottom shell and a decoration assembly, the top shell is provided with a first cavity, a first slot and two second slots, the first slot and the second slots are communicated with the first cavity, the bottom shell is provided with a second cavity, a third slot and two fourth slots, the third slot and the fourth slots are communicated with the second cavity, and the bottom shell is connected with the top shell. The first concave cavity and the second concave cavity are communicated to form an accommodating space, the first slot is communicated with the third slot, the two second slots are respectively communicated with the two fourth slots, and the power supply module and the main controller are arranged in the accommodating space; the decoration assembly comprises a front decoration piece, a first side decoration piece and a second side decoration piece, the two ends of the front decoration piece are inserted into the first inserting groove and the third inserting groove respectively, the two ends of the first side decoration piece are inserted into one second inserting groove and one fourth inserting groove respectively, and the two ends of the second side decoration piece are inserted into the other second inserting groove and the other fourth inserting groove respectively. And the power supply module, the main controller, the front ornament, the first side ornament and the second side ornament are electrically connected with the main controller.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment structure technology, and in particular relates to an energy storage device. Background Technology

[0002] Currently, many outdoor energy storage products only consider the aesthetics of the product's appearance when designing their ID (individual ID) system. The number of detachable parts in the outer shell is very small, making the product shell unique. The outer shell of the product generally includes a top cover, a middle shell, and a bottom cover. The top cover and bottom cover are respectively installed at the top and bottom ends of the middle shell to save on the number of mold sets, reduce assembly processes, and lower labor costs. All functional modules are concentrated on the middle shell.

[0003] However, the middle shell has a complex structure and high mold costs. The middle shell occupies the main part of the outer shell structure. When upgrading or adapting to different national standards and different functional configurations, such as adding or removing a certain functional module, like adding or removing an electrical socket, but with little difference in appearance, the middle shell needs to be redesigned as a whole. The mold also needs to be redesigned, which takes a relatively long time. This seriously affects market demand, product market share, product life cycle, and product value. Utility Model Content

[0004] The purpose of this utility model is to provide an energy storage device that addresses the problems of complex structure and high mold cost of existing products' middle shells. The middle shell occupies the main part of the outer shell structure. When upgrading similar products or adapting to different national standards and functional configurations, only adding or removing certain functional modules, and the appearance is not significantly different, the middle shell and mold need to be redesigned as a whole. This requires a relatively long time cycle and seriously affects market demand, product market share, product life cycle, and product value.

[0005] This utility model is implemented as follows: an energy storage device, comprising:

[0006] Main controller;

[0007] A power supply module, which is electrically connected to the main controller;

[0008] The top shell has a first cavity, a first slot, and two opposing second slots, both of which are in communication with the first cavity.

[0009] The bottom shell has a second recess, a third slot, and two opposing fourth slots. The third slot and the fourth slot are both connected to the second recess. The bottom shell is connected to the top shell. The first recess and the second recess are connected and enclose a receiving space. The first slot and the third slot are connected. The two second slots are respectively connected to the two fourth slots. The power module and the main controller are both installed in the receiving space.

[0010] The decorative assembly includes a front trim, a first side trim, and a second side trim. The two ends of the front trim are respectively inserted into a first slot and a third slot. The two ends of the first side trim are respectively inserted into a second slot and a fourth slot. The two ends of the second side trim are respectively inserted into another second slot and another fourth slot. The front trim, the first side trim, and the second side trim are all electrically connected to the main controller.

[0011] Optionally, the front trim includes a front cover and a human-machine interface mounted on the front cover, with both ends of the front cover inserted into the first slot and the third slot respectively, and the human-machine interface electrically connected to the main controller.

[0012] Optionally, the first side trim includes a right cover plate and a power socket for connecting to an external power source. The power socket is mounted on the right cover plate, and the two ends of the right cover plate are respectively inserted into a second slot and a fourth slot. The power socket is electrically connected to the main controller.

[0013] Optionally, the second side trim includes a left cover plate and at least one output socket for connecting to an external electrical device. The output socket is mounted on the left cover plate, and the two ends of the left cover plate are respectively inserted into another second slot and another fourth slot. The output socket is electrically connected to the main controller.

[0014] Optionally, the energy storage device further includes a plurality of first fasteners, and the top shell is provided with a plurality of first through holes. The top shell includes a first housing and a plurality of first studs that are all protruding on the inner wall of the first housing. The first through holes pass through the first housing and the corresponding first studs in sequence. The first slot and the second slot are both provided on the first housing.

[0015] The bottom shell includes a second shell and a plurality of second studs protruding from the inner wall of the second shell. The second studs are provided with first threaded holes. The first shell abuts against the second shell. The first fastener passes through the corresponding first through hole and connects to the first threaded hole. The third slot and the fourth slot are both provided on the second shell.

[0016] Optionally, the power module includes a battery compartment, a power board, multiple lithium batteries, multiple electrode plates, and two conductive plates. The battery compartment has multiple retaining holes, and each lithium battery is installed in each retaining hole. Each lithium battery has a positive terminal and a negative terminal corresponding to the positive terminal. The lithium batteries are connected to each other through the corresponding electrode plates. The positive terminal of at least one lithium battery constitutes the positive end, and the negative terminal of at least another lithium battery constitutes the negative end. One end of each of the two conductive plates is electrically connected to the positive end and the negative end, respectively, and the other end of each of the two conductive plates is electrically connected to the main controller through the power board.

[0017] Optionally, the power board includes a sub-control board, a positive terminal block, and a negative terminal block. The positive terminal block and the negative terminal block are both mounted on the sub-control board. The positive terminal block and the negative terminal block are both electrically connected to the main controller through the sub-control board. The two conductive plates are respectively electrically connected to the positive terminal block and the negative terminal block.

[0018] Optionally, the power module further includes two second fasteners. The positive electrode base is provided with a second threaded hole, and the negative electrode base is provided with a third threaded hole. The two conductive sheets are respectively provided with a second through hole and a third through hole. One of the second fasteners passes through the second through hole and is connected to the second threaded hole, and the other second fastener passes through the third through hole and is connected to the third threaded hole.

[0019] Optionally, the energy storage device further includes a plurality of third fasteners, the battery compartment is provided with a plurality of fourth through holes, and the bottom shell is provided with a plurality of fourth threaded holes. The third fasteners pass through the corresponding fourth through holes and are connected to the fourth threaded holes.

[0020] Optionally, the inner walls of the first cavity and the second cavity are each provided with a plurality of mesh grooves for heat dissipation.

[0021] This utility model utilizes a top shell, bottom shell, front trim, first side trim, and second side trim to form the outer shell of the energy storage device. The top shell and bottom shell can be set as standard parts and do not need to be replaced. The front trim, first side trim, and second side trim can be customized according to customer or ID requirements, adding or removing certain functions. Only the front trim, first side trim, or second side trim needs to be redesigned, allowing for flexible selection to meet the needs of similar products for upgrades or to meet different national standards and functional configurations. The disassembled components have simple structures and adopt a modular design, resulting in low mold manufacturing costs and short production cycles. This can shorten the development cycle and design costs, simplify assembly, increase efficiency, facilitate the energy storage device's market share, extend its life cycle, increase product value, and make it suitable for widespread promotion. Attached Figure Description

[0022] Figure 1This is a three-dimensional embodiment of the energy storage device provided by this utility model. Figure 1 ;

[0023] Figure 2 This is a three-dimensional embodiment of the energy storage device provided by this utility model. Figure 2 ;

[0024] Figure 3 yes Figure 2 Exploded view;

[0025] Figure 4 This is a perspective view of the top shell provided in an embodiment of the present utility model;

[0026] Figure 5 This is a perspective view of the front trim provided in an embodiment of the present utility model;

[0027] Figure 6 This is a perspective view of the main controller, power module, and bottom shell assembly provided in this embodiment of the utility model;

[0028] Figure 7 yes Figure 6 Exploded view;

[0029] Figure 8 This is a perspective view of the bottom shell provided in an embodiment of the present utility model;

[0030] Figure 9 This is a perspective view of the power supply module provided in an embodiment of this utility model;

[0031] Figure 10 yes Figure 9 Explosion Figure 1 ;

[0032] Figure 11 yes Figure 9 Explosion Figure 2 .

[0033] Figure label:

[0034] 10. Main controller; 20. Power module; 21. Battery compartment; 211. Holding hole; 212. Fourth through hole; 213. Sixth through hole; 214. Top frame; 215. Connecting frame; 22. Power board; 221. Sub-control board; 222. Positive terminal; 2221. Second threaded hole; 223. Negative terminal; 2231. Third threaded hole; 23. Lithium battery; 231. Positive terminal head; 232. Negative terminal head; 233. Positive end; 234. Negative end; 235. First battery pack; 236. Second battery pack; 24. Electrode plate; 25. Conductive sheet; 251. Second through hole; 252. Third through hole; 26. Separator; 30. Top shell; 31. First cavity; 311. Mesh groove; 32. First slot; 33. Second slot; 34. First through hole; 35. 1. First housing; 36. First stud; 37. Fifth through hole; 38. Third stud; 40. Bottom housing; 41. Second cavity; 42. Third slot; 43. Fourth slot; 44. Second housing; 45. Second stud; 451. First threaded hole; 46. Fourth threaded hole; 47. Fourth stud; 471. Fifth threaded hole; 50. Decorative component; 51. Front trim; 511. Front cover plate; 512. Human-machine interface; 5121. Circuit board; 5122. Display screen; 5123. Button; 52. First side trim; 521. Right cover plate; 5211. Air vent; 522. Power socket; 523. Cooling fan; 53. Second side trim; 531. Left cover plate; 532. Output socket; 60. First fastener; 70. Fourth fastener; 80. Handle. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0037] It should also be noted that the directional terms such as left, right, up, and down in this embodiment are only relative concepts or are based on the normal use of the product, and should not be considered as restrictive.

[0038] Please see Figures 1 to 8As shown, this utility model embodiment discloses an energy storage device, including a main controller 10, a power module 20, a top shell 30, a bottom shell 40, and a decorative component 50. The power module 20 is electrically connected to the main controller 10. The top shell 30 is provided with a first cavity 31, a first slot 32, and two opposing second slots 33. The first slot 32 and the two second slots 33 are respectively provided on three sides of the top shell 30. The first slot 32 and the two slots 33 are all connected to the first cavity 31.

[0039] The bottom shell 40 is provided with a second recess 41, a third slot 42 and two oppositely arranged fourth slots 43. The third slot 42 and the two fourth slots 43 are respectively located on the three sides of the bottom shell 40. The third slot 42 and the four slots 43 are all connected to the second recess 41. The bottom shell 40 is connected to the top shell 30. The first recess 31 and the second recess 41 are connected and enclosed to form an accommodating space. The first slot 32 and the third slot 42 are connected. The two second slots 33 are respectively connected to the two fourth slots 43. The power module 20 and the main controller 10 are both installed in the accommodating space.

[0040] Decorative component 50 includes a front trim 51, a first side trim 52, and a second side trim 53. The two ends of the front trim 51 are inserted into a first slot 32 and a third slot 42, respectively. The two ends of the first side trim 52 are inserted into a second slot 33 and a fourth slot 43, respectively. The two ends of the second side trim 53 are inserted into another second slot 33 and another fourth slot 43, respectively. The front trim 51, the first side trim 52, and the second side trim 53 are all electrically connected to the main controller 10. The top shell 30, the bottom shell 40, the front trim 51, the first side trim 52, and the second side trim 53 together form the outer shell of the energy storage device. When customers need to add or reduce certain functional requirements of the product, they only need to redesign the front trim 51, the first side trim 52, or the second side trim 53. They can be flexibly selected and matched, and the appearance ID effect can be flexibly changed according to customer needs. The top shell 30 and the bottom shell 40 can be used as standard parts and do not need to be replaced, thereby reducing production costs and enriching product competitiveness.

[0041] In this embodiment, the front trim 51 includes a front cover plate 511 and a human-machine interface 512 mounted on the front cover plate 511. The two ends of the front cover plate 511 are respectively inserted into the first slot 32 and the third slot 42. The human-machine interface 512 is electrically connected to the main controller 10 so that the energy storage device can be controlled through the human-machine interface 512.

[0042] In some embodiments, the human-machine interface 512 includes a circuit board 5121, a display screen 5122, and multiple buttons 5123. The display screen 5122 and multiple buttons 5123 are all fixed on the circuit board 5121, which is located within the receiving space. The display screen 5122 and buttons 5123 are both mounted on the front cover 511. The display screen 5122 and buttons 5123 are electrically connected to the main controller 10 through the circuit board 5121. The display screen 5122 can be used to display the real-time power status of the power module 20 and various alarm information. Of course, TYPE-C-DC and USB-A output interfaces can also be installed on the front cover 511 to enrich the product range, provide flexible options, and increase market share.

[0043] The first side panel 52 includes a right cover plate 521, a power socket 522, and a cooling fan 523. The cooling fan 523 and the power socket 522 are both mounted on the right cover plate 521. The two ends of the right cover plate 521 are respectively inserted into a second slot 33 and a fourth slot 43. The cooling fan 523 and the power socket 522 are both electrically connected to the main controller 10. The right cover plate 521 has an air vent 5211 corresponding to the cooling fan 523. The cooling fan 523 is used to dissipate heat from the power module 20, and the power socket 522 is used to connect to an external power source. The right cover plate 521 is relatively small, has a simple structure, and is easy to mold. The material and processing costs are relatively low, and it is quite flexible. The right cover plate 521 can be matched with different colors according to requirements. At the same time, different power sockets 522 can be designed according to the safety regulations of different countries to serve as AC input ports.

[0044] The second side trim 53 includes a left cover plate 531 and at least one output socket 532 for connecting to external electrical equipment. The output socket 532 is mounted on the left cover plate 531. The two ends of the left cover plate 531 are respectively inserted into another second slot 33 and another fourth slot 43. The output socket 532 is electrically connected to the main controller 10. The left cover plate 531 is relatively small, has a simple structure, is easy to mold, has low material and processing costs, and is quite flexible. The left cover plate 531 can be matched with different colors according to requirements. At the same time, different output sockets 532 can be designed according to the safety regulations of different countries to serve as AC or DC output ports.

[0045] It should be noted that in this embodiment, the traditional middle shell is essentially divided into a left cover plate 531, a front cover plate 511, and a right cover plate 521. These three components can have certain functions added or removed according to customer or ID requirements. Although this increases the cost of a mold for the left cover plate 531 and the right cover plate 521, these three components have simple structures, low mold manufacturing costs, and short production cycles. They can be flexibly selected and matched. When adding or removing certain functions, such as adding or removing an electrical socket, it is only necessary to redesign the left cover plate 531, the front cover plate 511, or the right cover plate 521, which shortens the development cycle, improves production efficiency, and reduces production costs.

[0046] The energy storage device also includes multiple first fasteners 60, and the top shell 30 is provided with multiple first through holes 34. The top shell 30 includes a first housing 35 and multiple first studs 36 that are all protruding on the inner wall of the first housing 35. The first through holes 34 pass through the first housing 35 and the corresponding first studs 36 in sequence. The first slot 32 and the second slot 33 are both provided on the first housing 35. The bottom shell 40 includes a second housing 44 and multiple second studs 45 that are all protruding on the inner wall of the second housing 44. The second studs 45 are provided with first threaded holes 451. The first housing 35 abuts against the second housing 44, and the first studs 36 abut against the corresponding second studs 45. The first fasteners 60 pass through the corresponding first through holes 34 and connect to the first threaded holes 451, thereby fixing the top shell 30 to the bottom shell 40. The third slot 42 and the fourth slot 43 are both provided on the second housing 44.

[0047] Please refer to further information. Figure 2 , Figure 3 ,as well as Figures 6 to 11 In this embodiment, the power module 20 includes a battery compartment 21, a power board 22, multiple lithium batteries 23, multiple electrode plates 24, and two conductive sheets 25. The battery compartment 21 has multiple side-by-side holding holes 211 through which multiple lithium batteries 23 are installed, respectively, in each holding hole 211 to avoid collisions between adjacent lithium batteries 23. Each lithium battery 23 has a positive electrode head 231 and a negative electrode head 232 corresponding to the positive electrode head 231. Each lithium battery 23 is connected to the others through corresponding electrode plates 24. The number and structure of the electrode plates 24 can be set according to actual needs. The positive electrode head 231 of at least one lithium battery 23 constitutes the positive terminal 233, and the negative electrode head 232 of at least another lithium battery 23 constitutes the negative terminal 234. One end of each of the two conductive sheets 25 is electrically connected to the positive terminal 233 and the negative terminal 234, respectively. The other end of each of the two conductive sheets 25 is electrically connected to the main controller 10 through the power board 22, so that the power module 20 can supply power to the main controller 10.

[0048] In some embodiments, multiple horizontally arranged lithium batteries 23 can be packaged into several first battery packs 235 and several second battery packs 236 in groups of at least two. The orientation of the lithium batteries 23 in the first battery pack 235 is opposite to that in the second battery pack 236. The several first battery packs 235 and several second battery packs 236 are arranged alternately on the battery compartment 21. The positive electrode head 231 of each lithium battery 23 in one of the first battery packs 235 constitutes the positive terminal portion 233, and the negative electrode head 232 of each lithium battery 23 in one of the second battery packs 236 constitutes the negative terminal portion 234.

[0049] The power module 20 also includes multiple partitions 26, which are all installed on the battery compartment 21. The multiple partitions 26 cover the corresponding electrode plates 24 to prevent the electrode plates 24 from coming into contact with external metal objects.

[0050] In this embodiment, the power board 22 includes a sub-control board 221, a positive electrode holder 222, and a negative electrode holder 223. The positive electrode holder 222 and the negative electrode holder 223 are both installed at the bottom of the sub-control board 221. The positive electrode holder 222 and the negative electrode holder 223 are both electrically connected to the main controller 10 through the sub-control board 221. Two conductive plates 25 are electrically connected to the positive electrode holder 222 and the negative electrode holder 223 respectively, so as to realize the electrical connection between the power board 22 and the lithium battery 23.

[0051] The power module 20 also includes two second fasteners. The positive electrode base 222 is provided with a second threaded hole 2221, and the negative electrode base 223 is provided with a third threaded hole 2231. The two conductive sheets 25 are respectively provided with a second through hole 251 and a third through hole 252. One of the second fasteners passes through the second through hole 251 and is connected to the second threaded hole 2221, and the other second fastener passes through the third through hole 252 and is connected to the third threaded hole 2231, so as to improve the connection between the power board 22 and the lithium battery 23 and enhance the stability of the power supply of the energy storage device.

[0052] The energy storage device also includes multiple third fasteners, the battery compartment 21 is provided with multiple fourth through holes 212, and the bottom shell 40 is provided with multiple fourth threaded holes 46. The third fasteners pass through the corresponding fourth through holes 212 and are connected to the fourth threaded holes 46, thereby stably fixing the power module 20 to the bottom shell 40.

[0053] The energy storage device also includes multiple fourth fasteners 70, and the top shell 30 is provided with multiple fifth through holes 37. The top shell 30 also includes multiple third studs 38 that are all protruding on the inner wall of the first shell 35. The fifth through holes 37 pass through the first shell 35 and the third studs 38 in sequence. The bottom shell 40 also includes multiple fourth studs 47 that are all protruding on the inner wall of the second shell 44. The fourth studs 47 are provided with fifth threaded holes 471. The battery compartment 21 is provided with multiple sixth through holes 213. The fourth fasteners 70 pass through the corresponding fifth through holes 37 and sixth through holes 213 in sequence and are connected to the fifth threaded holes 471 to further fix the power module 20.

[0054] The battery compartment 21 includes a top frame 214 and two connecting frames 215. The two connecting frames 215 are arranged opposite to each other and connected. The two connecting frames 215 enclose a plurality of the aforementioned holding holes 211. The top frame 214 is installed on the top of the two connecting frames 215. A plurality of fourth through holes 212 are respectively provided on the two connecting frames 215. A sixth through hole 213 is provided on the top frame 214. The control plate 221 is located between the top frame 214 and the connecting frames 215.

[0055] In some embodiments, the inner wall of the first cavity 31 and the inner wall of the second cavity 41 are provided with a plurality of mesh grooves 311 to facilitate heat dissipation of the power module 20.

[0056] In some embodiments, the energy storage device further includes a handle 80, which is mounted on the top housing 30 and is used to lift the energy storage device.

[0057] Energy storage devices have the following advantages:

[0058] 1. The original middle shell has been replaced by three small parts: front cover plate 511, right cover plate 521 and left cover plate 531. They are small in size, simple in structure, require simple molds, have short processing cycles and low costs.

[0059] 2. With the modular design of the right cover plate 521 and the left cover plate 531, the appearance can be designed with different ID effects as needed.

[0060] 3. With the modular design of the right cover plate 521 and the left cover plate 531, certain functions can be added or removed according to different national safety regulations and different customer needs.

[0061] 4. With the modular design of the front cover 511, the appearance can be different according to the ID design, while the main body remains unchanged, thus enriching the product models.

[0062] 5. After the mold design is completed, the colors of the front cover plate 511, right cover plate 521 and left cover plate 531 can be changed according to the appearance design.

[0063] In summary, this utility model utilizes a top shell 30, a bottom shell 40, a front trim 51, a first side trim 52, and a second side trim 53 to form the outer shell of the energy storage device. The top shell 30 and the bottom shell 40 can be set as standard parts and do not need to be replaced. The front trim 51, the first side trim 52, and the second side trim 53 can be customized according to customer or ID requirements, adding or removing certain functions. Only the front trim 51, the first side trim 52, or the second side trim 53 need to be redesigned, allowing for flexible selection to meet the needs of similar products for upgrades or for different national standards and functional configurations. The disassembled components have simple structures, adopt a modular design, have low mold manufacturing costs, and short production cycles, which can shorten the development cycle and design costs. Assembly is simple and efficient, making it easy for energy storage devices to seize market share, with a long life cycle, high product value, and suitability for widespread promotion.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An energy storage device, characterized by , comprising: a main control unit; a power module electrically connected to the main control unit; a top shell provided with a first cavity, a first slot and two oppositely arranged second slots, the first slot and the second slot being in communication with the first cavity; a bottom shell provided with a second cavity, a third slot and two oppositely arranged fourth slots, the third slot and the fourth slot being in communication with the second cavity, the bottom shell being connected to the top shell, the first cavity and the second cavity being in communication and enclosing a containing space, the first slot and the third slot being in communication, the two second slots being in communication with the two fourth slots, the power module and the main control unit being installed in the containing space; a decoration assembly including a front decoration piece, a first side decoration piece and a second side decoration piece, two ends of the front decoration piece being inserted into the first slot and the third slot respectively, two ends of the first side decoration piece being inserted into one of the second slot and one of the fourth slot respectively, and two ends of the second side decoration piece being inserted into the other of the second slot and the other of the fourth slot respectively, the front decoration piece, the first side decoration piece and the second side decoration piece being electrically connected to the main control unit.

2. The energy storage device of claim 1, wherein The front decoration piece includes a front cover plate and a human-machine interface installed on the front cover plate, two ends of the front cover plate being inserted into the first slot and the third slot respectively, and the human-machine interface being electrically connected to the main control unit.

3. The energy storage device of claim 1, wherein The first side decoration piece includes a right cover plate and a power socket for connecting to an external power source, the power socket being installed on the right cover plate, two ends of the right cover plate being inserted into one of the second slot and one of the fourth slot respectively, and the power socket being electrically connected to the main control unit.

4. The energy storage device of claim 1, wherein The second side decoration piece includes a left cover plate and at least one output socket for connecting to an external electrical equipment, the output socket being installed on the left cover plate, two ends of the left cover plate being inserted into the other of the second slot and the other of the fourth slot respectively, and the output socket being electrically connected to the main control unit.

5. The energy storage device of claim 1, wherein The energy storage device further includes a plurality of first fasteners, the top shell is further provided with a plurality of first through holes, the top shell includes a first shell and a plurality of first studs protruding from an inner wall of the first shell, the first through holes sequentially penetrating the first shell and the corresponding first studs, and the first slot and the second slot are both arranged on the first shell; the bottom shell includes a second shell and a plurality of second studs protruding from an inner wall of the second shell, the second studs being provided with first threaded holes, the first shell being in abutment with the second shell, the first fasteners being connected to the first threaded holes after penetrating the corresponding first through holes, and the third slot and the fourth slot being both arranged on the second shell.

6. The energy storage device of claim 5, wherein The power module includes a battery compartment, a power board, a plurality of lithium batteries, a plurality of electrode plates, and two conductive sheets. The battery compartment is provided with a plurality of clamping holes. Each lithium battery is installed in each clamping hole. The lithium battery has a positive electrode head and a negative electrode head corresponding to the positive electrode head. The positive electrode head of at least one lithium battery constitutes a positive electrode end, and the negative electrode head of at least one lithium battery constitutes a negative electrode end. One end of each conductive sheet is electrically connected to the positive electrode end and the negative electrode end, respectively. The other end of each conductive sheet is electrically connected to the main controller through the power board.

7. The energy storage device of claim 6, wherein The power board includes a sub-control board, a positive electrode seat, and a negative electrode seat. The positive electrode seat and the negative electrode seat are installed on the sub-control board. The positive electrode seat and the negative electrode seat are electrically connected to the main controller through the sub-control board. The two conductive sheets are electrically connected to the positive electrode seat and the negative electrode seat, respectively.

8. The energy storage device of claim 7, wherein The power module further includes two second fasteners. The positive electrode seat is provided with a second threaded hole. The negative electrode seat is provided with a third threaded hole. Each conductive sheet is provided with a second through hole and a third through hole. One of the second fasteners is connected to the second threaded hole through the second through hole. The other second fastener is connected to the third threaded hole through the third through hole.

9. The energy storage device of claim 6, wherein The energy storage device further includes a plurality of third fasteners. The battery compartment is further provided with a plurality of fourth through holes. The bottom shell is further provided with a plurality of fourth threaded holes. The third fasteners are connected to the fourth threaded holes through the corresponding fourth through holes.

10. The energy storage device of claim 1, wherein The inner wall of the first recess and the inner wall of the second recess are provided with a plurality of grid slots for heat dissipation.

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