Energy storage box

Abstract

The utility model provides an energy storage box which comprises a box body which comprises a top plate, a bottom plate and a first surrounding plate arranged between the top plate and the bottom plate, and the top plate, the first surrounding plate and the bottom plate form a containing cavity; the battery module is arranged in the containing cavity and supported by the bottom plate, and a charging port and a discharging port which are electrically connected with the battery module are formed in the outer wall of the box body; and the heat dissipation piece comprises a heat dissipation plate arranged between the bottom plate and the battery module and a heat dissipation flow channel arranged in the heat dissipation plate. Through the technical scheme provided by the invention, the problems that the heat dissipation effect of the battery module is poor and the normal use of the battery module is influenced due to the fact that the contact area between the bottom surface of the battery module and the box body or the support plate in the box body is relatively large when the battery module in the household energy storage box in the related technology is mounted in the box body can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to an energy storage box. Background Art

[0002] Lithium-ion batteries have the characteristics of high energy density, fast charging speed and high safety. They are the fastest-growing electrochemical energy storage technology. The current industry and technology are relatively mature, making lithium batteries widely used in various new energy power batteries and energy storage fields. Among them, lithium-ion batteries are an important energy product for realizing green energy services for mankind.

[0003] In the related art, household energy storage boxes can supply power to household appliances after charging. During peak power consumption, if household appliances are supplied with power through household energy storage boxes, it can not only relieve the pressure on the distribution network during peak power consumption, but also reduce costs through the difference between peak and valley electricity prices, and achieve a stable power supply.

[0004] However, when the battery module in the household energy storage box in the related art is installed in the box, the bottom surface of the battery module will have a large contact area with the box or the support plate in the box, resulting in poor heat dissipation of the battery module, affecting the normal use of the battery module. Utility Model Content

[0005] The utility model provides an energy storage box to solve the problem in the related art that when a battery module in a household energy storage box is installed in the box, the bottom surface of the battery module has a large contact area with the box or a support plate in the box, resulting in poor heat dissipation effect of the battery module, affecting the normal use of the battery module.

[0006] The utility model provides an energy storage box, which comprises: a box body, comprising a top plate, a bottom plate and a first enclosure, wherein the top plate, the first enclosure and the bottom plate form an accommodating cavity; a battery module, which is arranged in the accommodating cavity and supported by the bottom plate, and a charging port and a discharging port electrically connected to the battery module are arranged on the outer wall of the box body; and a heat sink, comprising a heat sink arranged between the bottom plate and the battery module and a heat dissipation channel arranged in the heat sink.

[0007] Furthermore, a first groove is arranged on the bottom plate, the heat sink is arranged in the first groove, and the top surface of the heat sink is in contact with the bottom surface of the battery module.

[0008] Furthermore, a second groove is arranged on the bottom plate, the first groove is arranged on the groove bottom of the second groove, the battery module is arranged in the second groove and supported by the groove bottom of the second groove.

[0009] Furthermore, the heat sink also includes a condenser arranged in the heat sink plate, the channel of the condenser forms a heat dissipation channel, a heat dissipation fluid inlet and a heat dissipation fluid outlet are arranged on the first enclosure, the first end of the condenser is connected to the heat dissipation fluid inlet, and the second end of the condenser is connected to the heat dissipation fluid outlet.

[0010] Furthermore, the heat sink also includes a heat dissipation fan for dissipating heat from the accommodating cavity, and the heat dissipation fan is arranged on the first enclosure.

[0011] Furthermore, the bottom wall of the second groove has a plurality of threaded holes, and a plurality of through holes are arranged at positions corresponding to the plurality of threaded holes on the battery module. The energy storage box also includes a pull rod and a fastening nut. A first threaded column is arranged at the first end of the pull rod, and a second threaded column is arranged at the second end of the pull rod. The pull rod is passed through the through hole, the first threaded column and the threaded hole are threadedly connected, the second end of the pull rod protrudes upward from the battery module, and the second threaded column is connected to the fastening nut.

[0012] Furthermore, the battery module includes a battery shell and a battery cell arranged in the battery shell, the battery shell includes two oppositely arranged first and second vertical plates and a second enclosure plate arranged between the first and second vertical plates, and the first and second vertical plates are both provided with through holes.

[0013] Furthermore, the thickness of the first vertical plate and the second vertical plate are both set between 5 mm and 15 mm.

[0014] Furthermore, the battery unit includes a plurality of battery cells arranged in a horizontal direction, with a flexible insulation layer for heat insulation between two adjacent battery cells; and / or, the battery module includes a plurality of battery cells stacked in a vertical direction, with an insulation plate for heat insulation between two adjacent battery cells in the vertical direction.

[0015] Furthermore, a handle is provided on the outer wall of the top plate; a power switch is provided on the first enclosure; the energy storage box also includes a BMS controller for detecting the voltage and temperature of the battery module, a display panel is provided on the first enclosure, and the BMS controller is electrically connected to the display panel.

[0016] The technical solution of the utility model is applied, and the energy storage box includes a box body, a battery module and a heat sink. The box body includes a top plate, a first enclosure plate and a bottom plate connected to each other. The top plate, the first enclosure plate and the bottom plate form a storage cavity for accommodating the battery module. The battery module is supported by the bottom plate of the box body, so that it is convenient to connect and fix the battery module to the bottom plate. The charging port on the outer wall of the box body is used to charge the battery module. The discharge port can provide electrical energy to household appliances through the battery module, which can alleviate the pressure of the power distribution network during peak hours of electricity consumption, and can also achieve cost reduction through the difference in peak and valley electricity prices. Among them, because the bottom surface of the battery module is in direct contact with the bottom plate, the contact area between the battery module and the bottom plate is large, resulting in a small heat dissipation space between the battery module and the bottom plate, which makes the heat dissipation effect of the battery module worse. Therefore, in order to ensure heat dissipation of the battery module, a heat sink is provided between the bottom plate and the battery module, and the heat sink is used to fit the battery module. The heat dissipation channel in the heat sink has a circulating heat dissipation fluid, ensuring that the heat dissipation fluid in the heat sink is used to exchange heat with the battery module, ensuring that the heat dissipation element is used to cool the battery module, ensuring that the battery module can be used normally, and avoiding safety accidents. With the above structure, by providing a heat sink between the bottom plate and the battery module, and using the heat sink to contact the bottom surface of the battery module, the battery module is cooled, thereby increasing the service life of the energy storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the box provided by the embodiment of the utility model is shown;

[0019] Figure 2 A schematic diagram of the structure of the heat sink provided by the embodiment of the utility model is shown;

[0020] Figure 3 A schematic diagram showing a heat dissipation fan provided by an embodiment of the utility model is arranged on a first enclosure;

[0021] Figure 4 An exploded view of a battery module provided by an embodiment of the utility model is shown;

[0022] Figure 5 A schematic diagram of a base plate provided by an embodiment of the utility model is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Box body; 11. Top plate; 12. Bottom plate; 121. First groove; 122. Second groove; 1221. Threaded hole; 13. First enclosure; 131. Heat dissipation fluid inlet; 132. Heat dissipation fluid outlet; 14. Charging port; 15. Discharging port;

[0025] 20. Battery module; 21. Battery housing; 211. First vertical plate; 212. Second vertical plate; 213. Second enclosure; 22. Battery unit; 221. Battery core; 23. Flexible thermal insulation layer; 24. Thermal insulation board;

[0026] 30. heat sink; 31. heat sink; 32. condenser; 33. cooling fan;

[0027] 41. Handle; 42. Power switch; 43. BMS controller; 44. Display panel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 5 As shown, an embodiment of the utility model provides an energy storage box, which includes a box body 10, a battery module 20 and a heat sink 30. The box body 10 includes a top plate 11, a bottom plate 12 and a first enclosure 13. The top plate 11, the first enclosure 13 and the bottom plate 12 form a accommodating cavity. The battery module 20 is arranged in the accommodating cavity and supported by the bottom plate 12. A charging port 14 and a discharging port 15 electrically connected to the battery module 20 are arranged on the outer wall of the box body 10. The heat sink 30 includes a heat sink 31 arranged between the bottom plate 12 and the battery module 20 and a heat dissipation channel arranged in the heat sink 31.

[0030] The energy storage box provided in this embodiment is applied, and the energy storage box includes a box body 10, a battery module 20 and a heat sink 30. The box body 10 includes a top plate 11, a first enclosure 13 and a bottom plate 12 connected to each other. The top plate 11, the first enclosure 13 and the bottom plate 12 form a housing for accommodating the battery module 20. The battery module 20 is supported by the bottom plate 12 of the box body 10, so that it is convenient to connect and fix the battery module 20 with the bottom plate 12. The charging port 14 on the outer wall of the box body 10 is convenient for charging the battery module 20. The discharge port 15 can provide electrical energy to household appliances through the battery module 20, which can relieve the pressure of the distribution network during the peak period of electricity consumption, and can also achieve cost reduction through the difference in peak and valley electricity prices. Among them, since the bottom surface of the battery module 20 is in direct contact with the bottom plate 12, the contact area between the battery module 20 and the bottom plate 12 is large, resulting in a small heat dissipation space between the battery module 20 and the bottom plate 12, thereby making the heat dissipation effect of the battery module 20 worse. Therefore, in order to ensure the heat dissipation of the battery module 20, a heat sink 31 is arranged between the bottom plate 12 and the battery module 20, and the heat sink 31 is used to fit the battery module 20. The heat dissipation channel in the heat sink 31 has a circulating heat dissipation fluid, which ensures that the heat dissipation fluid in the heat sink 31 is used to perform heat exchange on the battery module 20, and the heat sink 30 is used to cool the battery module 20, so that the battery module 20 can be used normally to avoid safety accidents. With the above structure, by arranging the heat sink 31 between the bottom plate 12 and the battery module 20, and by using the heat sink 31 to contact the bottom surface of the battery module 20, the battery module 20 can be cooled, thereby improving the service life of the energy storage box.

[0031] It should be noted that the charging port 14 is a five-hole socket and the discharging port 15 is a USB interface, which is used to support multiple modes of charging or discharging, thereby meeting multi-functional requirements.

[0032] like Figure 1 , Figure 2 as well as Figure 5 As shown, a first groove 121 is provided on the bottom plate 12, and the heat sink 31 is provided in the first groove 121, and the top surface of the heat sink 31 is in contact with the bottom surface of the battery module 20. With the above structure, by providing the first groove 121 on the bottom plate 12, the heat sink 31 can be positioned and installed in the first groove 121, and then the bottom plate 12 is used to support the battery module 20, so that the heat sink 31 can be prevented from directly supporting the battery module 20, and the self-strength of the heat sink 31 is ensured, so that the heat sink 31 can cool the battery module 20.

[0033] like Figure 5As shown, the bottom plate 12 is provided with a second groove 122, the first groove 121 is provided on the groove bottom of the second groove 122, and the battery module 20 is provided in the second groove 122 and supported by the groove bottom of the second groove 122. With the above structure, by providing the second groove 122 on the bottom plate 12, the first groove 121 is connected with the second groove 122, so that the outer dimensions of the second groove 122 are larger than the outer dimensions of the first groove 121, the heat sink 31 is positioned and installed in the first groove 121, and the battery module 20 is positioned and installed in the second groove 122, and then the battery module 20 can be positioned and installed in the second groove 122 of the bottom plate 12 by using the second groove 122, so as to facilitate assembly and fixation. Furthermore, since the outer dimensions of the second groove 122 are larger than those of the first groove 121, the bottom of the second groove 122 can support the battery module 20, and the heat sink 31 does not need to support the battery module 20. This ensures the strength of the heat sink 31 itself while cooling the battery module 20, thereby increasing the service life of the energy storage box.

[0034] like Figure 1 and Figure 2 As shown, the heat sink 30 also includes a condenser tube 32 disposed in the heat sink 31. The channel of the condenser tube 32 forms a heat dissipation channel. The first enclosure 13 is provided with a heat dissipation fluid inlet 131 and a heat dissipation fluid outlet 132. The first end of the condenser tube 32 is connected to the heat dissipation fluid inlet 131, and the second end of the condenser tube 32 is connected to the heat dissipation fluid outlet 132. By arranging the condenser tube 32 in the heat sink 31, the first end of the condenser tube 32 is connected to the heat dissipation fluid inlet 131 on the first enclosure 13, and the second end of the condenser tube 32 is connected to the heat dissipation fluid outlet 132 on the first enclosure 13, and the heat dissipation fluid can be introduced into the condenser tube 32, so that the heat dissipation fluid in the heat sink 31 is always in a flowing state, thereby improving the cooling effect of the heat sink 31 on the battery module.

[0035] It should be noted that when the energy storage box is placed in a certain position, a water inlet pipe is arranged to be connected to the heat dissipation fluid inlet 131, and a drain pipe is arranged to be connected to the heat dissipation fluid outlet 132, and the water inlet pipe is connected to the water source. In this way, the water inlet pipe can be used to provide the heat dissipation fluid to the condenser 32 in the heat dissipation plate 31, so as to cool the battery module 20. After heat exchange is performed using the condenser 32, the heat dissipation fluid is discharged through the drain pipe to ensure that the heat dissipation fluid is in a flowing state, which can enhance the heat exchange effect of the heat dissipation fluid on the battery module 20.

[0036] In this embodiment, the heat dissipation fluid is condensed water.

[0037] Specifically, by connecting the heat dissipation fluid inlet 131 to the water inlet pipe, when the temperature of the battery module 20 exceeds a certain temperature, the heat dissipation element 30 can be automatically opened.

[0038] like Figure 3 As shown, the heat sink 30 also includes a heat dissipation fan 33 for dissipating heat from the accommodating cavity, and the heat dissipation fan 33 is disposed on the first enclosure 13. By arranging the heat dissipation fan 33 on the first enclosure 13, since there is sufficient heat dissipation space between the battery module 20 and the top plate 11, the heat dissipation effect of the battery module 20 can be achieved by simply using the heat dissipation fan 33 to work.

[0039] It should be noted that if Figure 3 As shown, a plurality of cooling fans 33 are arranged at intervals along the height direction of the first enclosure 13 . The operation of the plurality of cooling fans 33 can achieve a better cooling effect on the battery module 20 .

[0040] A movable hinge is provided at the position of the cooling fan 33 located at the first enclosure 13, so that the side of the first enclosure 13 where the cooling fan 33 is located can be opened, so that the battery module 20 can be inspected in an emergency.

[0041] like Figure 5 As shown, the bottom wall of the second groove 122 has a plurality of threaded holes 1221, and a plurality of through holes are arranged at positions corresponding to the plurality of threaded holes 1221 on the battery module 20. The energy storage box also includes a pull rod and a fastening nut. A first threaded column is arranged at the first end of the pull rod, and a second threaded column is arranged at the second end of the pull rod. The pull rod is passed through the through hole, and the first threaded column and the threaded hole 1221 are threadedly connected. The second end of the pull rod protrudes upward from the battery module 20, and the second threaded column is connected to the fastening nut. By arranging a plurality of threaded holes 1221 on the bottom wall of the second groove 122, when the battery module 20 is positioned by using the second groove 122, the through holes on the battery module 20 are aligned with the threaded holes 1221, and a pull rod is passed through the through hole, so that the first threaded column at the first end of the pull rod is threadedly matched with the threaded hole 1221, and the second threaded column at the second end of the pull rod is threadedly connected with the fastening nut, thereby fixing the battery module 20. In this way, the threaded hole 1221, the through hole, the pull rod and the fastening nut are matched to ensure that the battery module 20 is positioned and installed in the second groove 122, thereby preventing the battery module 20 from shaking in the accommodating cavity of the box body 10.

[0042] like Figure 4As shown, the battery module 20 includes a battery housing 21 and a battery cell 22 disposed in the battery housing 21. The battery housing 21 includes two first vertical plates 211 and second vertical plates 212 disposed opposite to each other and a second enclosure 213 disposed between the first vertical plates 211 and the second vertical plates 212. Through holes are disposed on the first vertical plates 211 and the second vertical plates 212. With the above structure, by disposing the battery housing 21 and the battery cell 22, the through holes are disposed on the first vertical plates 211 and the second vertical plates 212 of the battery housing 21. This can avoid affecting the battery cell 22 when the pull rod is passed through the through hole, and the first vertical plate 211, the second vertical plate 212 and the second enclosure 213 are connected to ensure that the battery cell 22 is protected.

[0043] In this embodiment, the thickness of the first vertical plate 211 and the second vertical plate 212 are both set between 5 mm and 15 mm. The first vertical plate 211 and the second vertical plate 212 are set within the above range, so that when the through hole is set to fix the battery module 20, the first vertical plate 211 and the second vertical plate 212 can be used to protect the battery unit 22.

[0044] It should be noted that the thickness of the first vertical plate 211 and the second vertical plate 212 can be set to 5 mm, 7 mm, 9 mm, 11 mm, 13 mm, 15 mm, and any other value between 5 mm and 15 mm.

[0045] like Figure 4 As shown, the battery unit 22 includes a plurality of battery cells 221 arranged in a horizontal direction, and a flexible heat-insulating layer 23 for heat insulation is provided between two adjacent battery cells 221. With the above structure, by providing a flexible heat-insulating layer 23 between two adjacent battery cells 221, a heat-insulating effect can be achieved. Since the battery cell 221 will expand and contract to a certain extent when charging and discharging, the flexible heat-insulating layer 23 can adaptively change its shape with the expansion or contraction of the battery cell 221, thereby ensuring that the battery cell 221 can expand or contract within a certain space to avoid thermal runaway.

[0046] It should be noted that in this embodiment, the flexible insulation layer 23 is an aerogel layer, which can ensure that the battery module 20 has a fast charging buffer space and also has the ability of heat insulation, thereby ensuring the fast charging capability and safety performance of the energy storage box.

[0047] like Figure 4 As shown, the battery module 20 includes a plurality of battery cells 22 stacked in the vertical direction, and a heat insulation board 24 is provided between two battery cells 22 adjacent in the vertical direction for heat insulation. With the above structure, by providing a heat insulation board 24 between two battery cells 22 adjacent in the vertical direction, the two adjacent battery cells 22 can be heat-insulated.

[0048] like Figure 1 As shown, a handle 41 is provided on the outer wall of the top plate 11. The handle 41 is provided to facilitate moving the energy storage box.

[0049] like Figure 1 As shown, a power switch 42 is provided on the first enclosure 13. By providing the power switch 42, it is convenient to start and stop the energy storage box and control the energy storage box to work.

[0050] like Figure 1 As shown, the energy storage box also includes a BMS controller 43 for detecting the voltage and temperature of the battery module 20. A display panel 44 is provided on the first enclosure 13, and the BMS controller 43 is electrically connected to the display panel 44. With the above structure, the BMS controller 43 can detect and collect the voltage and temperature of the battery module 20, and feed back to the display panel 44. The display panel 44 can display the temperature, and the display panel 44 can also display the battery power status, which plays a role of real-time detection, thereby ensuring that the battery module 20 is running at a safe voltage and temperature.

[0051] It should be noted that the energy storage box also has a confluence protection device for preventing backflow and overcurrent protection to ensure the safety of the energy storage box.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0054] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An energy storage box, characterized in that: The energy storage box comprises: A box body (10) comprises a top plate (11), a bottom plate (12) and a first enclosure plate (13), wherein the top plate (11), the first enclosure plate (13) and the bottom plate (12) form a receiving cavity; A battery module (20) is arranged in the accommodating cavity and supported by the bottom plate (12); a charging port (14) and a discharging port (15) electrically connected to the battery module (20) are arranged on the outer wall of the box body (10); The heat dissipation element (30) comprises a heat dissipation plate (31) arranged between the bottom plate (12) and the battery module (20) and a heat dissipation channel arranged in the heat dissipation plate (31).

2. The energy storage box according to claim 1, characterized in that: The bottom plate (12) is provided with a first groove (121), the heat dissipation plate (31) is arranged in the first groove (121), and the top surface of the heat dissipation plate (31) is in contact with the bottom surface of the battery module (20).

3. The energy storage box according to claim 2, characterized in that: The bottom plate (12) is provided with a second groove (122), the first groove (121) is arranged on the groove bottom of the second groove (122), and the battery module (20) is arranged in the second groove (122) and supported by the groove bottom of the second groove (122).

4. The energy storage box according to any one of claims 1 to 3, characterized in that: The heat sink (30) further comprises a condenser (32) arranged in the heat sink plate (31); the channel of the condenser (32) forms the heat dissipation channel; a heat dissipation fluid inlet (131) and a heat dissipation fluid outlet (132) are arranged on the first enclosure (13); the first end of the condenser (32) is connected to the heat dissipation fluid inlet (131); and the second end of the condenser (32) is connected to the heat dissipation fluid outlet (132).

5. The energy storage box according to claim 4, characterized in that: The heat sink (30) further comprises a heat dissipation fan (33) for dissipating heat from the accommodating cavity, and the heat dissipation fan (33) is arranged on the first enclosure (13).

6. The energy storage box according to claim 3, characterized in that: The bottom wall of the second groove (122) has a plurality of threaded holes (1221), and a plurality of through holes are provided at positions on the battery module (20) corresponding to the plurality of threaded holes (1221). The energy storage box also includes a pull rod and a fastening nut. The first end of the pull rod is provided with a first threaded column, and the second end of the pull rod is provided with a second threaded column. The pull rod is passed through the through hole, and the first threaded column and the threaded hole (1221) are threadedly connected. The second end of the pull rod protrudes upward from the battery module (20), and the second threaded column is connected to the fastening nut.

7. The energy storage box according to claim 6, characterized in that: The battery module (20) comprises a battery housing (21) and a battery unit (22) arranged in the battery housing (21); the battery housing (21) comprises a first vertical plate (211) and a second vertical plate (212) arranged opposite to each other, and a second enclosure plate (213) arranged between the first vertical plate (211) and the second vertical plate (212); the through hole is arranged on both the first vertical plate (211) and the second vertical plate (212).

8. The energy storage box according to claim 7, characterized in that: The thickness of the first vertical plate (211) and the second vertical plate (212) are both set between 5 mm and 15 mm.

9. The energy storage box according to claim 7, characterized in that: The battery unit (22) comprises a plurality of battery cells (221) arranged in a horizontal direction, and a flexible heat-insulating layer (23) for heat insulation is provided between two adjacent battery cells (221); and / or, The battery module (20) comprises a plurality of battery cells (22) stacked in a vertical direction, and a heat insulation plate (24) for heat insulation is provided between two adjacent battery cells (22) in the vertical direction.

10. The energy storage box according to claim 1, characterized in that: A handle (41) is provided on the outer wall of the top plate (11); A power switch (42) is provided on the first enclosure plate (13); The energy storage box further comprises a BMS controller (43) for detecting the voltage and temperature of the battery module (20); a display panel (44) is provided on the first enclosure (13); and the BMS controller (43) is electrically connected to the display panel (44).

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