Energy storage device

Abstract

The utility model provides an energy storage device comprising a box body, at least one side of which is provided with an air window; the drainage structure is arranged opposite to the air window, the drainage structure comprises a water retaining piece and a first drainage hole, and the water retaining piece is arranged on the inner side of the box body and is arranged opposite to the air window; the first drainage hole is formed in the bottom face of the box body and located in a gap between the water retaining piece and the side wall, provided with the air window, in the box body. According to the utility model, the drainage structure opposite to the air window is arranged in the box body, so that when water enters from the air window, rainwater or other liquid entering the box body is blocked and flows into the gap due to the existence of the water blocking piece, and meanwhile, the rainwater or other liquid is timely drained through the first drainage hole in the gap; rainwater or other liquid is effectively prevented from entering the energy storage box body, so that the service life of the energy storage device is effectively prolonged, and the safety of the energy storage device is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery packs, and specifically relates to an energy storage device. Background Art

[0002] For box-type energy storage devices, a charging cavity for accommodating multiple battery packs is configured in the box to charge the battery packs placed in the charging cavity. In order to facilitate the heat dissipation of the energy storage device, a windshield heat dissipation port is generally opened on the side of the box to facilitate air circulation to achieve the heat dissipation function. However, the existence of the windshield can easily cause rainwater or other liquids to enter the interior of the energy storage device through the windshield, and the rainwater or other liquids that enter the interior of the energy storage device cannot be discharged in time, which will have a great impact on the life and safety of the energy storage device. Utility Model Content

[0003] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide an energy storage device to solve the problem that in the existing energy storage device, due to the presence of the heat dissipation wind window, rainwater or other liquids easily enter the interior of the energy storage device through the wind window, and the rainwater or other liquids entering the energy storage device cannot be discharged in time, which has a great impact on the life and safety of the energy storage device.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an energy storage device, comprising:

[0005] A box body, wherein at least one side of the box body is provided with a wind window;

[0006] at least one set of drainage structures, the drainage structures are arranged relative to the windshield, the drainage structures include a water retaining member and a first drainage hole,

[0007] The water retaining member is arranged on the inner side of the box body and is arranged opposite to the wind window;

[0008] The first drainage hole is arranged on the bottom surface of the box body, and the first drainage hole is located in the gap between the water retaining member and the side wall of the box body where the wind window is arranged.

[0009] In one embodiment of the present utility model, the width of the water retaining member is greater than the width of the wind window, and the height of the water retaining member is greater than the height of the wind window.

[0010] In one embodiment of the utility model, the water retaining member includes a water retaining strip and a water retaining plate. The water retaining strip extends upward from the bottom surface of the box body and is arranged around the first drainage hole. The water retaining plate is installed on the water retaining strip, and both sides of the water retaining plate are provided with bending portions that bend and extend toward one side of the windshield.

[0011] In an embodiment of the present invention, the wind window and the drainage structure are provided on two opposite sides of the box body.

[0012] In one embodiment of the utility model, it also includes a first support leg, which is arranged on one side of the box body and located close to the top of the box body. A second drainage hole is arranged at the first support leg, and the second drainage hole is connected to the chamber in the box body.

[0013] In one embodiment of the utility model, a battery pack box is further provided in the box body, and a plurality of circuit boards are provided between the battery pack box and the bottom surface of the box body, and the plurality of circuit boards are located on the same horizontal plane.

[0014] In one embodiment of the present invention, a handle assembly is also included, and the handle assembly includes:

[0015] A support member, the support member is fixedly connected to the box body and is located near the top of the box body, and a slideway is formed between the support member and the battery pack box;

[0016] A pull rod, wherein the pull rod portion is located in the box body and is slidably connected to the slideway;

[0017] Wherein, a limit pin is arranged at one end of the pull rod located in the box body, and a limit groove which cooperates with the limit pin and limits the maximum displacement of the pull rod is arranged on the support member.

[0018] In an embodiment of the present invention, the bottom surface of the box body is the first mating surface, the top surface of the box body is the second mating surface, and at least one mutually mating snap-fitting structure is respectively provided on the first mating surface and the second mating surface.

[0019] In one embodiment of the utility model, a plurality of second legs are arranged on the first mating surface, and a plurality of limiting grooves are arranged on the second mating surface. When a plurality of the energy storage devices are stacked, the second legs are engaged in the limiting grooves.

[0020] The utility model also provides an energy storage device, comprising:

[0021] Box;

[0022] A drainage structure configured to connect the box to the outside;

[0023] In the first state, when the box is placed horizontally, rainwater or other liquid in the box flows out from the drainage structure at the bottom of the box opposite to the placement surface;

[0024] In the second state, when the box is placed vertically, rainwater or other liquids in the box flow out from the drainage structure at the bottom of the box opposite to the placement surface.

[0025] In one embodiment of the present invention, a wind window is provided on at least one side of the box body, and at least a portion of the drainage structure is arranged relative to the wind window.

[0026] In one embodiment of the present invention, the drainage structure includes a first drainage hole and a second drainage hole.

[0027] When the box is placed horizontally, rainwater or other liquid in the box flows out from the first drainage hole at the bottom of the box opposite to the placement surface;

[0028] When the box is placed vertically, rainwater or other liquids in the box flow out from the second drainage hole at the bottom of the box opposite to the placement surface.

[0029] In an embodiment of the present invention, the first drainage hole is arranged opposite to the wind window, a water retaining member is provided at a portion of the periphery of the first drainage hole, and the water retaining member is arranged opposite to the wind window.

[0030] The utility model proposes an energy storage device, which provides a drainage structure inside a box body, and the drainage structure is correspondingly provided at each wind window, the drainage structure includes a water retaining member, the water retaining member is arranged opposite to the wind window, and there is a certain gap between the side walls of the box body where the wind window is arranged, and a first drainage hole is provided on the bottom surface of the box body, and the first drainage hole is located at the gap, when water enters from the wind window, the entering rainwater or other liquid is blocked due to the existence of the water retaining member and flows into the gap, and the rainwater or other liquid is discharged in time through the first drainage hole at the gap, so as to effectively prevent rainwater or other liquid from entering the interior of the energy storage box body, thereby effectively improving the life and safety of the energy storage device.

[0031] The utility model proposes an energy storage device. Due to the presence of the drainage structure, rainwater or other liquids can be blocked as much as possible and discharged in time, thereby preventing rainwater or other liquids from entering the interior of the box, thereby ensuring the dryness of the internal environment of the box and avoiding the influence of rainwater or other liquids on the circuit board. Therefore, in the present application, each circuit board can be arranged as close to the bottom surface of the box as possible, and the various circuit boards inside the box can be arranged on the same horizontal plane, thereby reducing the height occupied by the circuit board inside the box, effectively reducing the overall height of the energy storage device, and improving its space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 The utility model is a schematic structural diagram of an energy storage device in one embodiment.

[0034] Figure 2 This is a schematic structural diagram of an energy storage device in one embodiment of the utility model without a box cover.

[0035] Figure 3 This is a schematic diagram of the structure inside the box of an energy storage device in one embodiment of the utility model.

[0036] Figure 4 It is a front view of the interior of the energy storage device box in one embodiment of the utility model.

[0037] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the middle line AA.

[0038] Figure 6 This is a front view of the energy storage device in one embodiment of the utility model without the box cover.

[0039] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure along BB.

[0040] Figure 8 This is a schematic diagram of the structure of the internal drainage structure of the main body in one embodiment of the utility model.

[0041] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure at point C in the middle.

[0042] Fig.10 The figure is a schematic diagram of the bottom structure of the energy storage device box in one embodiment of the utility model.

[0043] Fig.11 for Fig.10 Schematic diagram of the enlarged structure at D in the middle.

[0044] Fig.12 It is a front view of the bottom surface of the energy storage device box in one embodiment of the utility model.

[0045] Fig.13 for Fig.12 Schematic diagram of the heat generation cross-section structure of the middle edge FF.

[0046] Fig.14 for Fig.13 Schematic diagram of the enlarged structure at M in the middle.

[0047] Fig.15 The figure is a schematic structural diagram of a support member in a handle assembly according to an embodiment of the present invention.

[0048] Description of labels:

[0049] 100. Energy storage device; 10. Box body; 20. Drainage structure; 101. Windshield; 21. Water retaining member; 22. First drainage hole; 11. Main body; 12. Box cover; 13. Battery pack box; 40. Battery pack; 111. First side wall; 211. Water retaining strip; 212. Water retaining plate; 2111. Reinforcing rib; 102. First support leg; 30. Moving wheel; 103. Second drainage hole; 41. Circuit board; 50. Handle assembly; 51. Support member; 52. Pull rod; 501. Slide; 521. Limit pin; 511. Limit groove; 104. Second support leg; 105. Limit groove; 106. Groove; 107. Protrusion. DETAILED DESCRIPTION

[0050] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0051] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0052] See also Figures 1 to 15 As shown, the present application proposes an energy storage device to solve the problem that the existing energy storage device is prone to rainwater or other liquids entering the interior of the energy storage device from the wind window due to the presence of the heat dissipation wind window, which has a great impact on the life and safety of the energy storage device. Specifically, the energy storage device 100 includes a box body 10 and a drainage structure 20. At least one side of the box body 10 is provided with a wind window 101. Correspondingly, at least one group of drainage structures 20 is provided inside the box body 10. The drainage structure 20 is arranged relative to the wind window 101 to block the rainwater or other liquids entering from the wind window 101 and discharge them in time to prevent rainwater or other liquids from entering the interior of the energy storage device 100 from the wind window 101.

[0053] See also Figures 1 to 5 As shown, in this embodiment, the drainage structure 20 includes a water retaining member 21 and a first drainage hole 22. The water retaining member 21 is arranged inside the box body 10 and is arranged opposite to the wind window 101. There is a certain gap between the water retaining member 21 and the side wall of the box body 10 where the wind window 101 is arranged. The first drainage hole 22 is arranged on the bottom surface of the box body 10 and is located in the gap between the water retaining member 21 and the side wall of the box body 10 where the wind window 101 is arranged. The water retaining member 21 blocks rainwater or other liquid entering from the wind window 101, so that it flows into the gap between the water retaining member 21 and the box body 10, and discharges rainwater or other liquid through the first drainage hole 22 to prevent rainwater or other liquid from entering the interior of the energy storage device 100. The shape of the first drainage hole 22 can be circular, elliptical or other polygonal water-passing gaps.

[0054] In other embodiments, the interface where the water-passable gap is located can be configured as a detachable structure (not shown in the accompanying drawings). The interface here can be understood as at least a partial box body 10 including the water-passable gap structure. The provision of the detachable structure facilitates the cleaning of the water-passable gap blocked by sewage or other debris entering from the windshield 101, thereby eliminating the need to disassemble and dredge the water-passable gap from the inside of the box body 10. This saves time in dredging the water-passable gap to a great extent, and also avoids the problem of rainwater or other liquids being unable to be discharged in time due to the blockage of the water-passable gap.

[0055] Of course, in other embodiments, the detachable structure may be arranged around the water-passable gap structure without including the water-passable gap structure. That is, it can be understood that after the detachable structure is removed, it is convenient to clean the blockage of the water-passable gap.

[0056] See also Figure 1 and Figure 2 As shown, in this embodiment, the box body 10 includes a body 11 and a box cover 12, one side of the box cover 12 is rotatably connected to one side of the body 11, the windshield 101 is arranged on one side of the body 11, and a battery pack box 13 is arranged in the body 11, and a charging cavity 131 for accommodating a battery pack 40 is arranged in the battery pack box 13, and the battery pack 40 is installed in the charging cavity 131 to charge the battery pack 40. In this embodiment, the side of the body 11 provided with the windshield 101 is defined as a first side wall 111, and the water blocking member 21 is arranged inside the body 11, specifically between the first side wall 111 and the battery pack box 13, so as to block rainwater or other liquids entering from the windshield 101.

[0057] It should be noted that, in this embodiment, in order to ensure that the water retaining member 21 can block the rain or other liquids entering from the wind window 101 to the greatest extent, the width of the water retaining member 21 is greater than the width of the wind window 101, and the height of the water retaining member 21 is greater than the height of the wind window 101, so that the water retaining member 21 can completely block the wind window 101, thereby blocking the rain or other liquids entering from the wind window 101 to the greatest extent, so as to better maintain the dryness of the inside of the energy storage box 100.

[0058] It should be noted that, in other embodiments, the water retaining member 21 can block most of the rainwater or other liquids entering from the windshield 101, so that the water retaining member 21 can block the main water inlet part in terms of width and height.

[0059] See also Figures 5 to 9 As shown, in this embodiment, the water retaining member 21 includes a water retaining strip 211 and a water retaining plate 212, and the water retaining strip 211 is formed by extending upward from the bottom surface of the box body 10 and arranged around the first drainage hole 22. It can be understood that the water retaining strip 211 is formed by extending upward from the bottom surface of the main body 11, and is formed as an integral structure with the main body 11, and the water retaining strip 211 is arranged around the first drainage hole 22 to enclose a semi-enclosed chamber with the first side wall 111, and the semi-enclosed chamber is isolated from the chamber in the box body 10. The water retaining plate 212 is installed on the water retaining strip 211, and the water retaining plate 212 blocks the rainwater or other liquid entering from the windshield 101, so that it flows into the space enclosed by the water retaining strip 211 and the first side wall, thereby discharging the rainwater or other liquid from the first drainage hole 22. Of course, in other embodiments, the water retaining strip 211 and the water retaining plate 212 can also be an integrally formed water retaining component.

[0060] See also Figures 3 to 9 As shown, in this embodiment, the two sides of the water baffle 212 are provided with a bending portion 2111 that bends and extends toward one side of the wind window 101, that is, the water baffle 212 is arranged around the wind window 101 in a semi-enclosed manner, and the bending portion 2111 that bends and extends toward the wind window 101 can further block rainwater or other liquids entering from the wind window 101, and can better prevent rainwater or other liquids from entering the energy storage device 100. Of course, in other embodiments, the upper end of the water baffle 212 can also be configured with a bending portion that bends and extends toward one side of the wind window 101, which can also block rainwater or other liquids entering from the wind window 101 to a certain extent.

[0061] In this embodiment, a reinforcing rib 2121 is disposed on a surface of the water retaining plate 212 facing away from the first side wall 111 to improve the structural strength of the water retaining plate 212 .

[0062] See also Figures 3 to 9 As shown, in this embodiment, the wind window 101 and the drainage structure 20 are provided on opposite sides of the box body 10, and the structure and arrangement of the drainage structure 20 and the wind window 101 are consistent with the structure and arrangement described in the above embodiments.

[0063] See also Figure 1 and Figure 4 As shown, in this embodiment, a first leg 102 and a moving wheel 30 are further provided on one side of the box body 10. The moving wheel 30 is arranged near the bottom of the box body 10, and the first leg 102 is located near the top of the box body 10. When the energy storage device 100 is placed upright, the first leg 101 and the moving wheel 32 play a supporting role.

[0064] See also Figures 10 to 14 As shown, in this embodiment, when the energy storage device 100 is placed upright, the first support leg 102 is the lowest position of the internal space of the energy storage device 100. Therefore, a second drainage hole 103 is provided at the first support leg 102. The second drainage hole 103 is connected to the chamber inside the box body 10 to play a role in drainage when the energy storage device 100 is placed upright.

[0065] See also Figure 1 As shown, in this embodiment, the energy storage device includes a first state and a second state. In the first state, the box body 10 is placed horizontally, and rainwater or other liquids in the box body 10 flow out from the drainage structure at the bottom of the box body 10 opposite to the placement surface. Specifically, the rainwater or other liquids in the box body 10 flow out from the first drainage hole 22 at the bottom of the box body 10 opposite to the placement surface; in the second state, the box body 10 is placed vertically, and rainwater or other liquids in the box body 10 flow out from the drainage structure at the bottom of the box body 10 opposite to the placement surface. Specifically, the rainwater or other liquids in the box body 10 flow out from the second drainage hole 103 at the bottom of the box body 10 opposite to the placement surface.

[0066] See also Fig.13 In this embodiment, when the energy storage device 100 is vertical, in the current placement state, the curved surface of the box body 10 from the longitudinal wall to the bottom wall is configured to have an inclined angle, and rainwater or other liquids in the box body 13 will flow out through the second drainage hole 103 under the guidance of the curved surface with an inclined angle, thereby avoiding the problem that rainwater or other liquids cannot be discharged smoothly.

[0067] Of course, in other embodiments, when the energy storage device 100 is placed horizontally, in the current placement state, the box body 10 is configured to have an inclined angle from the longitudinal wall to the curved surface of the bottom wall, and rainwater or other liquids in the box body 13 will flow out through the drainage holes arranged on the bottom wall under the guidance of the curved surface with an inclined angle, thereby avoiding the problem that rainwater or other liquids cannot be discharged smoothly.

[0068] Understandably, see Figure 3 , Figure 4 and Figure 7 As shown, in the present embodiment, due to the presence of the drainage structure 20, rainwater or other liquids can be blocked as much as possible and discharged in time, thereby preventing rainwater or other liquids from entering the interior of the box body 10, thereby ensuring the dryness of the internal environment of the box body 10 and avoiding the influence of rainwater or other liquids on the circuit board. Therefore, in the present application, each circuit board 41 can be arranged as close to the bottom surface of the box body 10 as possible, and each circuit board 41 inside the box body 10 can be arranged on the same horizontal plane, that is, a plurality of circuit boards 41 are arranged between the battery pack box 40 and the bottom surface of the box body 10, and the plurality of circuit boards 41 are located on the same horizontal plane, thereby reducing the height occupied by the circuit board 40 inside the box body 10, effectively reducing the overall height of the energy storage device 100, and improving its space utilization.

[0069] See also Figure 3 , Figure 5 , Figure 8 and Fig.15 As shown, in this embodiment, the energy storage device 100 further includes a handle assembly 50, which is located on a side of the box body 10 opposite to the first leg 102, and is partially located inside the box body 10. Specifically, the handle assembly 50 includes a support member 51 and a pull rod 52, the support member 51 is fixedly connected to the box body 10, and is located inside the box body 10 near the top thereof, and a slide 501 is formed between the support member 51 and the battery pack box 40, and the pull rod 52 is partially located inside the box body 10 and is slidably connected to the slide 501. For example, the support member 51 is in a U-shaped structure, and the opening of the U-shaped structure faces the top of the energy storage device 100. The part of the pull rod 52 located inside the box body 10 is installed in the U-shaped structure. A slide is formed between the U-shaped structure and the battery pack box 40. The pull rod 52 slides in the U-shaped groove of the U-shaped structure to play a guiding role when the pull rod 52 is pulled out of the box body 10 or put into the box body 10.

[0070] See also Figure 3 , Figure 5 , Figure 8 and Fig.15As shown, in the present embodiment, a limit pin 521 is provided at one end of the pull rod 52 located in the box body 10, and a limit groove 511 cooperating with the limit pin 521 is provided on the support member 51. When the pull rod 52 is pulled out from the inside of the box body 10 along the slide 501, the limit pin 521 is engaged in the limit groove 511 to limit the pull rod 52, that is, the cooperation between the limit pin 521 and the limit groove 511 can limit the maximum displacement of the pull rod 52.

[0071] See also Figure 1 , Fig.10 and Fig.12 As shown, for the existing energy storage device 100, the top and bottom surfaces of the box 10 are generally relatively flat, and there is no structure that cooperates with each other. When multiple energy storage devices 100 are stacked up and down, due to the lack of a structure that engages or limits each other, they are extremely unstable after being stacked up, and are prone to tipping over or shifting, thereby causing danger. Therefore, in this embodiment, the bottom surface of the box 10 is designed as a first mating surface, and the top surface of the box 10 is designed as a second mating surface. The first mating surface and the second mating surface are respectively provided with at least one mutually mating structure. It can be understood that the first mating surface is the bottom surface of the body 11, and the second mating surface is the top surface of the box cover 12. When multiple energy storage devices 100 are stacked up and down, the engaging structures on the first mating surface and the second mating surface engage with each other to achieve limited fixation between different energy storage devices 100, thereby avoiding tipping over or shifting.

[0072] See also Figure 1 , Fig.10 and Fig.12As shown, in this embodiment, a plurality of second legs 104 are provided on the first mating surface, and a plurality of limiting grooves 105 are provided on the second mating surface. When a plurality of the energy storage devices 100 are stacked, the second legs 104 are engaged in the limiting grooves 105, that is, a plurality of second legs 104 are provided on the bottom surface of the body 11, and correspondingly, a plurality of limiting grooves 105 matched with the second legs 104 are provided on the top surface of the box cover 12. The second legs 104 play a supporting role when the energy storage device 100 is placed flat. When a plurality of energy storage devices 100 are stacked up and down, the second legs 104 of the energy storage device 100 located at the upper side are engaged in the limiting grooves 105 located on the top surface of the box cover 12 in the energy storage device 100 located at the lower side, so as to realize the limiting fixation between the upper and lower energy storage devices 100. In some other embodiments, a groove 106 is formed on a portion of the surface of the first mating surface, and a protrusion 107 corresponding to the groove 106 is formed on a portion of the surface of the second mating surface. When multiple energy storage devices 100 are stacked up and down, the protrusion 107 on the energy storage device 100 located below is engaged in the groove 106 of the energy storage device 100 located above and below to further ensure the limiting fixation between the upper and lower energy storage devices 100.

[0073] The utility model proposes an energy storage device, which provides a drainage structure inside a box body, and the drainage structure is correspondingly provided at each wind window, the drainage structure includes a water retaining member, the water retaining member is arranged opposite to the wind window, and there is a certain gap between the side walls of the box body where the wind window is arranged, and a first drainage hole is provided on the bottom surface of the box body, and the first drainage hole is located at the gap, when water enters from the wind window, the entering rainwater or other liquid is blocked due to the existence of the water retaining member and flows into the gap, and the rainwater or other liquid is discharged in time through the first drainage hole at the gap, so as to effectively prevent rainwater or other liquid from entering the interior of the energy storage box body, thereby effectively improving the life and safety of the energy storage device.

[0074] The utility model proposes an energy storage device. Due to the presence of the drainage structure, rainwater or other liquids can be blocked as much as possible and discharged in time, thereby preventing rainwater or other liquids from entering the interior of the box, thereby ensuring the dryness of the internal environment of the box and avoiding the influence of rainwater or other liquids on the circuit board. Therefore, in the present application, each circuit board can be arranged as close to the bottom surface of the box as possible, and the various circuit boards inside the box can be arranged on the same horizontal plane, thereby reducing the height occupied by the circuit board inside the box, effectively reducing the overall height of the energy storage device, and improving its space utilization.

[0075] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application.

[0076] The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. An energy storage device, characterized in that: include: A box body, wherein at least one side of the box body is provided with a wind window; at least one set of drainage structures, the drainage structures are arranged relative to the windshield, the drainage structures include a water retaining member and a first drainage hole, The water retaining member is arranged on the inner side of the box body and is arranged opposite to the wind window; The first drainage hole is arranged on the bottom surface of the box body, and the first drainage hole is located in the gap between the water retaining member and the side wall of the box body where the wind window is arranged.

2. The energy storage device according to claim 1, characterized in that: The width of the water retaining member is greater than the width of the wind window, and the height of the water retaining member is greater than the height of the wind window.

3. The energy storage device according to claim 1, characterized in that: The water retaining member includes a water retaining strip and a water retaining plate. The water retaining strip extends upward from the bottom surface of the box body and is arranged around the first drainage hole. The water retaining plate is installed on the water retaining strip, and both sides of the water retaining plate are provided with bending portions that bend and extend toward one side of the windshield.

4. The energy storage device according to claim 1, characterized in that: The wind window and the drainage structure are arranged on opposite sides of the box body.

5. The energy storage device according to claim 1, characterized in that: It also includes a first support leg, which is arranged on one side of the box body and located close to the top of the box body. A second drainage hole is arranged at the first support leg, and the second drainage hole is connected to the chamber in the box body.

6. The energy storage device according to claim 1, characterized in that: A battery pack box is also disposed in the box body, and a plurality of circuit boards are disposed between the battery pack box and the bottom surface of the box body, and the plurality of circuit boards are located on the same horizontal plane.

7. The energy storage device according to claim 6, characterized in that: Also included is a handle assembly, the handle assembly comprising: A support member, the support member is fixedly connected to the box body and is located near the top of the box body, and a slideway is formed between the support member and the battery pack box; A pull rod, wherein the pull rod portion is located in the box body and is slidably connected to the slideway; Wherein, a limit pin is arranged at one end of the pull rod located in the box body, and a limit groove which cooperates with the limit pin and limits the maximum displacement of the pull rod is arranged on the support member.

8. The energy storage device according to claim 1, characterized in that: The bottom surface of the box body is a first mating surface, and the top surface of the box body is a second mating surface. The first mating surface and the second mating surface are respectively provided with at least one mutually mating engaging structure.

9. The energy storage device according to claim 8, characterized in that: A plurality of second legs are arranged on the first mating surface, and a plurality of limiting grooves are arranged on the second mating surface. When a plurality of the energy storage devices are stacked, the second legs are engaged in the limiting grooves.

10. An energy storage device, characterized in that: include: Box; A drainage structure configured to connect the box to the outside; In the first state, when the box is placed horizontally, rainwater or other liquid in the box flows out from the drainage structure at the bottom of the box opposite to the placement surface; In the second state, when the box is placed vertically, rainwater or other liquids in the box flow out from the drainage structure at the bottom of the box opposite to the placement surface.

11. The energy storage device according to claim 10, characterized in that: At least one side of the box body is provided with a wind window, and at least a portion of the drainage structure is arranged relative to the wind window.

12. The energy storage device according to claim 11, characterized in that: The drainage structure comprises a first drainage hole and a second drainage hole, When the box is placed horizontally, rainwater or other liquid in the box flows out from the first drainage hole at the bottom of the box opposite to the placement surface; When the box is placed vertically, rainwater or other liquids in the box flow out from the second drainage hole at the bottom of the box opposite to the placement surface.

13. The energy storage device according to claim 12, characterized in that: The first drainage hole is arranged opposite to the wind window, a water retaining member is arranged at a part of the periphery of the first drainage hole, and the water retaining member is arranged opposite to the wind window.

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