Energy storage cabinet

Abstract

This application discloses an energy storage cabinet, relating to the field of energy storage equipment technology. It includes a cabinet body, with a battery installation chamber and an electrical chamber separated vertically on the inner side of the cabinet. The battery installation chamber is located above the electrical chamber. The cabinet body has an upper door and a lower door, with the upper door corresponding to the battery installation chamber and the lower door corresponding to the electrical chamber. Multiple battery support structures are provided within the battery chamber, equidistantly distributed vertically, creating multiple battery assembly positions within the battery installation chamber. The top of the battery installation chamber has ventilation holes, and a vent is located on the side of the battery installation chamber away from the upper door, near the bottom of the battery installation chamber. This application can improve the problem of limited ventilation and heat dissipation in energy storage cabinets installed in confined spaces.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, and in particular to energy storage boxes and cabinets. Background Technology

[0002] Energy storage cabinets are the basic unit of energy storage equipment, and are often referred to as "super power banks" due to their large-scale energy storage capabilities. Energy storage cabinets utilize core components such as battery modules, battery management systems (BMS), and thermal management systems to store and release electrical energy, and their applications cover a wide range of scenarios.

[0003] Heat dissipation is a crucial aspect of ensuring the stable operation of energy storage systems. Air cooling and liquid cooling are the most widely used methods in energy storage systems, with liquid cooling technology gradually becoming the mainstream heat dissipation method in the industry due to its unique advantages. Liquid cooling systems achieve efficient cooling by circulating coolant to remove heat from the internal components of the equipment.

[0004] Even with liquid cooling, energy storage tanks typically require auxiliary ventilation for heat dissipation. This is primarily to address heat that liquid cooling cannot completely cover and to ensure overall environmental stability. Ventilation is mainly achieved by creating ventilation holes in the side walls of the energy storage tank to achieve optimal cooling performance. However, the confined space around the energy storage tank often limits airflow, thus restricting the effectiveness of these ventilation holes. Summary of the Invention

[0005] To address the issue of limited ventilation and heat dissipation in energy storage boxes installed in confined spaces, this application provides an energy storage box cabinet.

[0006] The energy storage cabinet provided in this application adopts the following technical solution:

[0007] An energy storage cabinet includes a cabinet body. The cabinet body has a battery installation chamber and an electrical chamber separated vertically on its inner side. The battery installation chamber is located above the electrical chamber. The cabinet body has an upper door and a lower door. The upper door corresponds to the battery installation chamber, and the lower door corresponds to the electrical chamber. Multiple battery support structures are provided within the battery chamber of the cabinet body. These battery support structures are distributed at equal intervals along a vertical line, creating multiple battery assembly positions within the battery installation chamber. The top of the battery installation chamber has ventilation holes higher than the battery installation height. A ventilation opening is located on the side of the battery installation chamber away from the upper door, near the bottom of the battery installation chamber.

[0008] By adopting the above technical solution, the battery installation chamber and the electrical chamber are separated vertically, making it less likely that the heat generated by the battery packs in the battery installation chamber will affect the electrical components in the electrical chamber. Even in confined spaces around the energy storage cabinet, the top space of the cabinet can usually still maintain good airflow. The heat generated by the battery packs in the battery installation chamber raises the temperature of the air inside. Because the ventilation openings are located near the bottom of the battery installation chamber, and the heat dissipation holes are located at the top, the airflow at the top of the cabinet is relatively smooth. This creates a chimney-like effect in the extraction of hot air from the battery installation chamber, which is beneficial for ventilation and heat dissipation.

[0009] Optionally, the battery support structure includes two opposing elongated folding plates, which are right-angled structures. The length direction of the elongated folding plates is consistent with the direction of the folding edge line and is perpendicular to the upper cabinet door; the folding angles of the two elongated folding plates are opposite.

[0010] By adopting the above technical solution, using two long strip-shaped folded plates as the battery support structure, the contact area between the battery support structure and the battery is smaller, which helps to reduce the impact of the battery support structure on the battery heat dissipation efficiency.

[0011] Optionally, the cabinet has a frame structure with vertical frame strips, and the elongated folding plate is fixedly installed on two adjacent vertical frame strips.

[0012] By adopting the above technical solution, the elongated folding plate is installed between two adjacent vertical frame bars, so that the vertical frame bars form a certain gap between the battery and the inner wall of the battery installation chamber, which is conducive to ensuring the heat dissipation efficiency of the battery.

[0013] Optionally, the angle of the elongated folded plate faces upward, and the elongated folded plate has a horizontal folded edge and a vertical folded edge. The upper surface of the horizontal folded edge serves as a support surface. The horizontal folded edge is provided with a plurality of hollow holes, and a support rib is integrally bent at the edge of the hollow holes on the horizontal folded edge. The support rib abuts against the vertical frame strip.

[0014] By adopting the above technical solution, the support ribs abut against the vertical frame bars, which increases the stability of the elongated folded plate. Furthermore, the support ribs can function as heat dissipation fins, which is beneficial for promoting heat dissipation of the elongated folded plate.

[0015] Optionally, the elongated folded plate is provided with two sheet metal support members, which are respectively connected to two vertical frame strips. The two sheet metal support members jointly support the elongated folded plate. The two sheet metal support members and the two support ribs of the elongated folded plate together form a horizontal limiting relationship for the elongated folded plate.

[0016] By adopting the above technical solution, the elongated folded plate is connected to two vertical frame strips via two sheet metal supports. The two sheet metal supports and the supporting ribs of the elongated folded plate form a horizontal limiting relationship, which helps to increase the stability of the elongated folded plate.

[0017] Optionally, the elongated folding plate is provided with a linkage limiting structure, which includes a front connecting rod and a rear connecting rod. The front connecting rod and the rear connecting rod are respectively hinged to the elongated folding plate. The front connecting rod is close to the upper cabinet door, and the rear connecting rod is away from the upper cabinet door. The front connecting rod and the rear connecting rod are hinged together by a hinged connecting rod to form a four-bar linkage mechanism. The hinge point between the front connecting rod and the elongated folding plate is lower than the hinge point between the rear connecting rod and the elongated folding plate. The front connecting rod can rotate to a position lower than the support surface of the battery support structure. The front connecting rod is detachably provided with a positioning pin, which is used to connect the elongated folding plate.

[0018] By adopting the above technical solution, when installing the battery onto the battery support structure, the front connecting rod of the linkage limiting structure is moved to a position lower than the support surface of the battery support structure. The battery is then placed on the support surface and gradually pushed into the depth of the battery mounting chamber along the surface of the battery support structure. This causes the battery to move the rear connecting rod of the linkage limiting structure, which in turn rotates the front connecting rod. A locating pin is then used to fix the front connecting rod, thus fixing the positions of both the front and rear connecting rods and limiting the battery position. The front connecting rod of the linkage limiting structure can rotate into place automatically after the battery installation is complete, making the battery positioning process faster.

[0019] Optionally, the rear end of the elongated folding plate is provided with a fixed limiting structure, which is located on the side of the rear connecting rod away from the front connecting rod, and the fixed limiting structure is used to limit the tilt angle of the rear connecting rod.

[0020] By adopting the above technical solution, the fixed limiting structure can limit the tilt angle of the rear connecting rod, so that the battery can be placed without manual judgment of whether it is in place, which is more convenient; moreover, the fixed limiting structure can enhance the limiting effect on the battery.

[0021] Optionally, an air supply device is installed on the side wall of the cabinet corresponding to the position of the ventilation opening; a belt mechanism is provided on the side of the cabinet near the ventilation opening, the belt mechanism includes a belt and two rollers for winding the belt, one of the two rollers is a drive roller, one of the two rollers is located at the top of the battery installation chamber, and the other is located at the bottom of the battery installation chamber; the belt is provided with long ventilation holes at equal intervals along the circumference direction.

[0022] By adopting the above technical solution, the air supply device can supply air to the battery installation room to improve ventilation efficiency; the belt separates the battery placement area and the ventilation opening on the battery installation room side. During the process of the air supply device supplying air to the battery installation room side, it needs to pass through the ventilation holes of the belt. The ventilation holes move with the movement of the belt, so that the airflow caused by the air supply device is more evenly distributed in the battery installation room, which is conducive to more sufficient heat dissipation in different areas of the battery installation room.

[0023] Optionally, the length direction of the long ventilation hole is inclined relative to the width direction of the belt, and the distribution interval of the long ventilation hole is smaller than the size of the long ventilation hole along the circumference of the belt.

[0024] By adopting the above technical solution, the length direction of the long ventilation hole is inclined relative to the width direction of the belt, so that the long ventilation holes on the two sides of the belt with opposite linear speeds intersect each other. In this case, as the belt runs, the long ventilation holes on both sides of the belt cross-cut the airflow, making the airflow of the air supply device in a continuous process of change. This helps to make the airflow delivered by the air supply device into the battery installation chamber more turbulent, which helps to make the ventilation and heat dissipation effect of the battery installation chamber more sufficient.

[0025] Optionally, the cabinet has a frame structure with vertical frame strips, and the two sides of the belt abut against two of the vertical frame strips respectively.

[0026] By adopting the above technical solution, the two sides of the belt abut against two vertical frame strips respectively, so that the two vertical frame strips can cover the gap between the belt and the battery installation chamber, thereby allowing the airflow of the air supply device to pass through the long ventilation hole of the belt as much as possible.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] When the installation environment around the energy storage cabinet is narrow, the space at the top of the energy storage cabinet can usually still maintain good airflow. Since the ventilation openings are located near the bottom of the battery installation chamber and the heat dissipation holes are located at the top of the battery installation chamber, the airflow at the top of the energy storage cabinet is relatively smooth. This allows the extraction of hot air from the battery installation chamber to produce an effect similar to a chimney, which is conducive to promoting ventilation and heat dissipation in the battery installation chamber.

[0029] The front connecting rod of the linkage limiting structure can rotate into place by itself after the battery is installed, making the battery limiting process faster;

[0030] The air supply device can supply air to the battery installation room. During the air supply process, the air needs to pass through the ventilation holes of the belt. The ventilation holes move with the movement of the belt, so that the airflow caused by the air supply device is more evenly distributed in the battery installation room, which is conducive to more sufficient heat dissipation in different areas of the battery installation room. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the energy storage cabinet in Example 1.

[0032] Figure 2 This is a schematic diagram of the battery installation chamber of the energy storage cabinet in Example 1.

[0033] Figure 3 This is a schematic diagram of the battery support structure in Example 1.

[0034] Figure 4 This is a schematic diagram of the battery support structure and linkage limiting structure in Example 2.

[0035] Figure 5 This is a schematic diagram of Embodiment 2 illustrating the linkage limiting structure.

[0036] Figure 6 This is a schematic diagram of the battery installation chamber of the energy storage cabinet in Example 3.

[0037] Figure 7 This is a schematic diagram of the belt mechanism and battery support structure in Example 3.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Cabinet body; 11. Battery installation chamber; 12. Electrical chamber; 13. Upper cabinet door; 14. Lower cabinet door; 15. Ventilation holes; 16. Explosion-proof window; 17. Ventilation opening; 18. Frame structure; 181. Vertical frame strip; 182. Horizontal frame strip; 183. Longitudinal frame strip; 2. Battery support structure; 21. Long strip folded plate; 211. Horizontal folded edge; 212. Vertical folded edge; 213. Hollow hole; 214. Support rib; 215. Fixed limiting structure; 216. Detachable limiting structure; 22. Sheet metal support component; 23. Bolt; 3. Linkage limiting structure; 31. Front connecting rod; 311. Insertion part; 32. Rear connecting rod; 33. Hinge connecting rod; 34. Positioning pin; 4. Air supply device; 5. Belt mechanism; 51. Roller; 52. Belt; 521. Long ventilation hole; 53. Motor. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail. Example 1

[0041] This application discloses an energy storage cabinet in its embodiments. (Refer to...) Figure 1 and Figure 2 The energy storage cabinet includes a cabinet body 1, which is a vertical structure. The inner side of the cabinet body 1 is divided into a battery installation chamber 11 and an electrical chamber 12. The battery installation chamber 11 is located above the electrical chamber 12. The cabinet body 1 is provided with an upper cabinet door 13 and a lower cabinet door 14. The upper cabinet door 13 corresponds to the battery installation chamber 11, and the lower cabinet door 14 corresponds to the electrical chamber 12. The lower cabinet door 14 and the side wall of the electrical chamber 12 away from the lower cabinet door 14 are provided with louvered structures for ventilation.

[0042] The battery chamber contains multiple sets of battery support structures 2, which are evenly spaced vertically, creating multiple battery assembly positions inside the battery mounting chamber 11. Several ventilation holes 15 are located at the top of both side walls of the battery mounting chamber 11, with the holes positioned above the battery installation height. An explosion-proof window 16 is installed on the top wall of the battery mounting chamber 11. A ventilation opening 17 is located on the side of the battery mounting chamber 11 away from the upper cabinet door 13, near the bottom of the battery mounting chamber 11. Insect screens are installed on the cabinet 1 corresponding to the locations of the ventilation openings 17 and ventilation holes 15.

[0043] Even in confined spaces around the energy storage cabinet, the top space of the cabinet can usually still maintain good airflow. Because the vent 17 is located near the bottom of the battery mounting chamber 11, and the heat dissipation holes 15 are located at the top of the battery mounting chamber 11, the airflow at the top of the energy storage cabinet is relatively smooth. This allows the extraction of hot air from the battery mounting chamber 11 to create a chimney-like effect, which is beneficial for ventilation and heat dissipation in the battery mounting chamber 11.

[0044] The space above the energy storage cabinet can be increased by using fans or blowers to speed up the airflow at the top of the energy storage cabinet, thereby enhancing the heat dissipation efficiency inside the upper cabinet 1.

[0045] Reference Figure 1 The main material of the cabinet 1 is sheet metal. The cabinet 1 has a frame structure 18, which serves as the main load-bearing structure of the energy storage cabinet. The sheet metal material of the cabinet 1 is installed on the frame structure 18. The frame strips of the frame structure 18 of the cabinet 1 are made of square tubing. In another embodiment, the frame strip material can be replaced with aluminum profiles or steel profiles. The frame strips of the frame structure 18 are divided into vertical frame strips 181, horizontal frame strips 182, and longitudinal frame strips 183 according to their extension direction. The horizontal frame strips 182 are parallel to the upper cabinet door 13 and the lower cabinet door 14, and the longitudinal frame strips 183 are perpendicular to the upper cabinet door 13 and the lower cabinet door 14.

[0046] Reference Figure 1 and Figure 3The battery support structure 2 includes two opposing elongated folded plates 21. The elongated folded plates 21 are right-angled structures, and their length direction is consistent with the direction of the fold line and parallel to the longitudinal frame strips 183 of the frame structure 18. The fold angles of the two elongated folded plates 21 face upward and are arranged opposite each other. The elongated folded plates 21 are fixedly installed on two adjacent vertical frame strips 181.

[0047] The elongated folded plate 21 has a horizontal folded edge 211 and a vertical folded edge 212. The upper surface of the horizontal folded edge 211 serves as a support surface. The horizontal folded edge 211 is provided with several hollow holes 213. The horizontal folded edge 211 is integrally bent at the edge of the hollow holes 213 and a support rib 214 is provided. The support rib 214 abuts against the vertical frame strip 181.

[0048] Reference Figure 3 The elongated folded plate 21 is provided with two sheet metal support members 22, which are respectively connected to two vertical frame strips 181. The two sheet metal support members 22 together support the elongated folded plate 21. The sheet metal support members 22 are connected to the vertical frame strips 181 by bolts 23. The bolts 23 pass through the sheet metal support members 22 and are threadedly connected to the vertical frame strips 181. In another embodiment, the bolts 23 can be replaced by bolt 23 nut assemblies. The nuts of the bolt 23 nut assemblies are welded and fixed to the inner side of the vertical frame strips 181, and the bolts 23 of the bolt 23 nut assemblies pass through both the sheet metal support members 22 and the vertical frame strips 181.

[0049] Two sheet metal support members 22 are located between two support ribs 214 of the elongated folded plate 21, so that the two sheet metal support members 22 and the two support ribs 214 of the elongated folded plate 21 together form a horizontal limiting relationship for the elongated folded plate 21. Alternatively, the two support ribs 214 of the elongated folded plate 21 can be located between the two sheet metal support members 22 to achieve the limiting function of the elongated folded plate 21.

[0050] The elongated folding plate 21 has a fixed limiting structure 215 at its rear end and a detachable limiting structure 216 at its front end. The rear end of the elongated folding plate 21 is the end furthest from the upper cabinet door 13. The detachable limiting structure 216 is a sheet metal part and is connected to the elongated folding plate 21 by screws. Example 2

[0051] The difference between this embodiment and embodiment 1 is that the detachable limiting structure 216 is not provided in this embodiment.

[0052] Reference Figure 4In this embodiment, the elongated folding plate 21 is provided with a linkage limiting structure 3. The linkage limiting structure 3 includes a front connecting rod 31 and a rear connecting rod 32. The front connecting rod 31 and the rear connecting rod 32 are respectively hinged to the elongated folding plate 21. The front connecting rod 31 is close to the upper cabinet door 13, and the rear connecting rod 32 is away from the upper cabinet door 13. The front connecting rod 31 and the rear connecting rod 32 are hinged together by a hinge connecting rod 33 to form a four-bar linkage mechanism. The hinge point between the front connecting rod 31 and the elongated folding plate 21 is lower than the hinge point between the rear connecting rod 32 and the elongated folding plate 21. The front connecting rod 31 can rotate to a position lower than the support surface of the battery support structure 2.

[0053] The upper end of the front connecting rod 31 is provided with a plug-in part 311, and a positioning pin 34 is plugged into the plug-in part 311. The positioning pin 34 is a flat-headed pin. The positioning pin 34 is used to plug into the horizontal folded edge 211 of the long strip folded plate 21. When the positioning pin 34 is plugged into the horizontal folded edge 211, it is set vertically.

[0054] In this embodiment, the fixed limiting structure 215 is located on the side of the rear connecting rod 32 away from the front connecting rod 31, and the fixed limiting structure 215 is used to limit the tilt angle of the rear connecting rod 32.

[0055] Reference Figure 4 and Figure 5 When installing the battery onto the battery support structure 2, the front connecting rod 31 of the linkage limiting structure 3 is moved to a position where its top is lower than the support surface of the battery support structure 2. The battery is then placed onto the support surface of the battery support structure 2, and subsequently pushed gradually along the surface of the battery support structure 2 into the depth of the battery mounting chamber 11. This causes the battery to move the rear connecting rod 32 of the linkage limiting structure 3, causing the front connecting rod 31 to rotate until the rear connecting rod 32 abuts against the fixed limiting structure 215. The positioning pin 34 then secures the front connecting rod 31, fixing the positions of the front and rear connecting rods 31 and thus limiting the battery position. The front connecting rod 31 of the linkage limiting structure 3 can rotate into place automatically after the battery installation is complete, making the battery positioning process faster.

[0056] To ensure the stability of the battery installation, the horizontal fold 211 is kept horizontal or tilted downward toward the fixed limiting structure 215, and the tilt angle between the horizontal fold 211 and the horizontal plane is kept between 0-3°. Example 3

[0057] Reference Figure 6 and Figure 7The difference between this embodiment and embodiment 1 is that, in this embodiment, the cabinet 1 is also provided with an air supply device 4 and a belt mechanism 5. The air supply device 4 is a cooling fan, and the air supply device 4 is installed at the position corresponding to the ventilation opening 17 of the cabinet 1. The air supply device 4 is installed on the outside of the cabinet 1. In another embodiment, the air supply device 4 can also be installed on the inside of the cabinet 1.

[0058] The belt mechanism 5 is installed inside the cabinet 1 on the side near the ventilation opening 17. The belt mechanism 5 includes a belt 52 and two rollers 51 for winding the belt 52. The two sides of the belt 52 abut against two vertical frame bars 181 respectively. One of the two rollers 51 is installed at the top of the battery mounting chamber 11, and the other is installed at the bottom of the battery mounting chamber 11. The roller 51 located at the bottom of the battery mounting chamber 11 is the drive roller. The drive roller is driven by a motor 53. The motor 53 is coaxially connected to the drive roller through a coupling. The motor 53 is installed on the outside of the cabinet 1.

[0059] In another embodiment, the motor 53 may also be installed in the battery mounting chamber 11 or the electrical chamber 12, and connected to the drive roller via a transmission structure such as a synchronous belt assembly or a gear pair. When the motor 53 is installed in the electrical chamber 12, a hole needs to be made in the sheet metal between the battery mounting chamber 11 and the electrical chamber 12 to avoid the transmission structure.

[0060] The belt 52 is provided with long ventilation holes 521 at equal intervals along its circumference; the length direction of the long ventilation holes 521 is inclined relative to the width direction of the belt 52, and the distribution interval of the long ventilation holes 521 is smaller than the size of the long ventilation holes 521 along the circumference of the belt 52.

[0061] The principle of this embodiment is as follows: the air supply device 4 delivers air into the battery mounting chamber 11 through the ventilation holes of the belt 52. The ventilation holes move with the belt 52, making the airflow distribution in the battery mounting chamber 11 more even. Moreover, since the length direction of the long ventilation holes 521 is relatively inclined to the width direction of the belt 52, the long ventilation holes 521 on the two sides of the belt 52 with opposite linear velocities present an intersecting shape. In this case, as the belt 52 moves, the long ventilation holes 521 on both sides of the belt 52 have a cross-cutting effect on the airflow, making the airflow delivered into the battery mounting chamber 11 by the air supply device 4 tend to be turbulent, which is conducive to making the ventilation and heat dissipation effect in the battery mounting chamber 11 more sufficient.

[0062] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An energy storage cabinet, characterized in that: The device includes a cabinet (1), which has a battery installation chamber (11) and an electrical cavity (12) separated vertically on its inner side. The battery installation chamber (11) is located above the electrical cavity (12). The cabinet (1) has an upper cabinet door (13) and a lower cabinet door (14). The upper cabinet door (13) corresponds to the battery installation chamber (11), and the lower cabinet door (14) corresponds to the electrical cavity (12). The battery installation chamber (11) has multiple sets of battery support structures (2) arranged vertically at equal intervals. The battery support structures (2) form multiple battery assembly positions inside the battery installation chamber (11). The top of the battery installation chamber (11) has heat dissipation holes (15), and the side of the battery installation chamber (11) away from the upper cabinet door (13) has a ventilation opening (17) near the bottom of the battery installation chamber (11). An air supply device (4) is installed on the side wall of the cabinet (1) at the position corresponding to the ventilation opening (17); a belt mechanism (5) is provided on the side of the cabinet (1) near the ventilation opening (17). The belt mechanism (5) includes a belt (52) and two rollers (51) for winding the belt (52). One of the two rollers (51) is a drive roller. One of the two rollers (51) is located at the top of the battery mounting chamber (11), and the other is located at the bottom of the battery mounting chamber (11); the belt (52) is provided with long ventilation holes (521) at equal intervals along the circumference direction. The length direction of the long ventilation hole (521) is inclined relative to the width direction of the belt (52), and the distribution interval of the long ventilation hole (521) is smaller than the size of the long ventilation hole (521) along the circumference of the belt (52).

2. The energy storage cabinet according to claim 1, characterized in that: The battery support structure (2) includes two opposing elongated folding plates (21). The elongated folding plates (21) are right-angled structures. The length direction of the elongated folding plates (21) is consistent with the direction of the folding line and is perpendicular to the upper cabinet door (13). The folding angles of the two elongated folding plates (21) are opposite.

3. The energy storage cabinet according to claim 2, characterized in that: The cabinet (1) has a frame structure (18), the frame structure (18) has vertical frame strips (181), and the long strip folding plate (21) is fixedly installed on two adjacent vertical frame strips (181).

4. The energy storage cabinet according to claim 3, characterized in that: The long strip folded plate (21) has its folded corners facing upwards. The long strip folded plate (21) has a horizontal folded edge (211) and a vertical folded edge (212). The upper surface of the horizontal folded edge (211) serves as a support surface. The horizontal folded edge (211) is provided with a plurality of hollow holes (213). The horizontal folded edge (211) is integrally bent at the edge of the hollow holes (213) and a support rib (214) is provided. The support rib (214) abuts against the vertical frame strip (181).

5. The energy storage cabinet according to claim 4, characterized in that: The elongated folded plate (21) is provided with two sheet metal support members (22), which are respectively connected to two vertical frame strips (181). The two sheet metal support members (22) jointly support the elongated folded plate (21). The two sheet metal support members (22) and the two support ribs (214) of the elongated folded plate (21) together form a horizontal limiting relationship for the elongated folded plate (21).

6. The energy storage cabinet according to claim 4, characterized in that: The elongated folding plate (21) is provided with a linkage limiting structure (3), which includes a front connecting rod (31) and a rear connecting rod (32). The front connecting rod (31) and the rear connecting rod (32) are respectively hinged to the elongated folding plate (21). The front connecting rod (31) is close to the upper cabinet door (13), and the rear connecting rod (32) is away from the upper cabinet door (13). The front connecting rod (31) and the rear connecting rod (32) are hinged together. A hinged link (33) is used to form a four-bar linkage; the hinge point between the front link (31) and the elongated folded plate (21) is lower than the hinge point between the rear link (32) and the elongated folded plate (21); the front link (31) can be rotated to a position lower than the support surface of the battery support structure (2); the front link (31) is detachably provided with a positioning pin (34), which is used to connect the elongated folded plate (21).

7. The energy storage cabinet according to claim 6, characterized in that: The rear end of the elongated folding plate (21) is provided with a fixed limiting structure (215). The fixed limiting structure (215) is located on the side of the rear connecting rod (32) away from the front connecting rod (31). The fixed limiting structure (215) is used to limit the tilt angle of the rear connecting rod (32).

8. The energy storage cabinet according to claim 1, characterized in that: The cabinet (1) has a frame structure (18), the frame structure (18) has vertical frame strips (181), and the two sides of the belt (52) respectively abut against the two vertical frame strips (181).

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