High-voltage directly-hung cascade energy storage unit

Abstract

The invention relates to the field of high-voltage energy storage, in particular to a high-voltage direct-hanging type cascade energy storage unit which comprises a bottom plate. A supporting block is fixedly connected to the center of the upper end of the bottom plate, a bearing frame is fixedly connected to the upper end of the supporting block, and a heat preservation box is fixedly connected to the upper end of the bearing frame. Wind power generated by starting an air return mechanism can flow out through a ventilation groove and the interior of a bearing frame and then flow out through a space formed between a first sealing block and a second sealing block after the first sealing block moves, the part of air can flow out through an air outlet body and an air blocking assembly, and rapid exhaust of the air in the heat preservation box is achieved; when ventilation in the bearing frame is not needed, the first sealing block is moved to the side wall of the second sealing block, and the front end and the rear end of the bearing frame can be blocked, so that the heat preservation effect in the heat preservation box can be improved, and the device can have good performance in the high-temperature and cold environment; hot air can be input into the heat preservation box by starting the air return mechanism, and dryness in the heat preservation box can be kept.

Description

Technical Field

[0001] The present invention belongs to the field of high-voltage energy storage, and in particular relates to a high-voltage direct-hanging cascade energy storage unit. Background Art

[0002] With the adjustment of the global energy structure and the rapid development of renewable energy, the importance of energy storage technology has become increasingly prominent. Traditional energy storage methods have problems such as low efficiency, high cost, and slow response speed, which can hardly meet the needs of modern power systems. Therefore, the research and development of new efficient, reliable and economical energy storage technologies has become a hot topic in the industry. High-voltage direct-mounted cascade energy storage units came into being in this context.

[0003] At present, the existing high-voltage direct-mounted cascade energy storage unit is directly connected to the high-voltage grid through the energy storage inverter, eliminating the transformer link required in the traditional energy storage system. This design not only simplifies the system structure, but also improves the efficiency of energy conversion and storage. The core component of the energy storage unit is the H-Cell energy storage unit. The H-Cell can convert the DC power of multiple battery packs into AC power through a single-phase PCS, and use a series connection to achieve high-voltage output, ultimately achieving an effect that matches the grid voltage. However, the high-voltage direct-mounted cascade energy storage unit in the prior art is difficult to effectively resist high temperature and severe cold environments when used outdoors, and it is difficult to improve the heat dissipation and insulation effect inside the energy storage unit. In addition, in humid weather, it is difficult to pass hot air near the energy storage unit to keep it dry, which needs further improvement.

[0004] Therefore, a high-voltage direct-mounted cascade energy storage unit is proposed. The high-voltage direct-mounted cascade energy storage unit in the prior art can effectively resist high temperature and severe cold environments when used outdoors, can improve the heat dissipation and insulation effects inside the energy storage unit, and in humid weather, hot air can be introduced near the energy storage unit to keep it dry. Summary of the invention

[0005] In order to overcome the problems that the high-voltage direct-mounted cascade energy storage unit in the prior art is difficult to effectively resist high temperature and severe cold environments when used outdoors, it is difficult to improve the heat dissipation and insulation effects inside the energy storage unit, and it is difficult to introduce hot air near the energy storage unit to keep it dry in humid weather, therefore, a high-voltage direct-mounted cascade energy storage unit is proposed.

[0006] The technical solution of the present invention is: a high-voltage direct-hanging cascade energy storage unit, comprising a bottom plate; a support block is fixedly connected to the center of the upper end of the bottom plate, a bearing frame is fixedly connected to the upper end of the support block, a heat preservation box is fixedly connected to the upper end of the bearing frame, a top plate is fixedly connected to the upper end of the heat preservation box, an air outlet is fixedly connected to the front and rear ends of the bearing frame, a wind shield assembly is arranged at one end of the air outlet away from the bearing frame, a return air mechanism for returning air is arranged at the left and right ends of the heat preservation box, and a uniformly distributed ventilation slot is opened through the upper end of the bearing frame; A sealing mechanism is provided on the bearing frame, which includes a fixed body, a double-thread screw, a threaded sleeve, a moving block, a first sealing block, a fixed seat, a motor and a second sealing block; a fixed body is fixedly connected to the left and right edges of the middle part of the upper end of the bearing frame, and the front and rear ends of the fixed body are rotatably installed with double-thread screws, the threads of the outer wall of the double-thread screw located on both sides of the center are opposite to each other, and the outer wall of the double-thread screw is movably installed with two threaded sleeves respectively adapted to the two threads, and the side wall of the threaded sleeve is fixedly connected to the moving block, and the front and rear edges of the bottom of the inner wall of the bearing frame are fixedly connected with the second sealing block, and the second sealing block is in an inverted T shape, and the ends of the two moving blocks corresponding to the left and right directions that are close to each other are fixedly connected with the first sealing block, and the two first sealing blocks and the second sealing blocks corresponding to the left and right directions together constitute a rectangular structure, and the upper ends of the first sealing block and the moving block are both fitted on the upper end surface of the inner wall of the bearing frame, and two fixed seats are fixedly connected to the rear edge of the upper end of the bearing frame, and the inner wall of the fixed seat is fixedly connected with the motor, and the front end of the output shaft of the motor is fixedly connected to the rear end of the double-thread screw.

[0007] Preferably, during use, when it is necessary to ventilate the inside of the load-bearing frame, the motor is turned on to rotate the double-thread screw, and the threaded sleeve will move closer to or farther away from each other along the side wall of the double-thread screw, which will cause the two moving blocks to move closer to or farther away from each other, and finally the first sealing block will move out from the side wall of the second sealing block, and a space for air outlet will be formed between the first sealing block and the second sealing block. Then, the wind force generated by turning on the return air mechanism can pass through the ventilation slot and the inside of the load-bearing frame, and then flow out through the space formed between the first sealing block after the first sealing block moves and the second sealing block. This part of the air will flow out through the air outlet body and the wind shield assembly, so as to realize the rapid discharge of the air in the insulation box. When it is not necessary When ventilation is carried out inside the bearing frame, the first sealing block is moved to the side wall of the second sealing block, so that the front and rear ends of the bearing frame can be sealed, thereby improving the insulation effect in the insulation box, and the device can perform better in both high temperature and cold environments. In addition, opening the return air mechanism can input hot air into the insulation box to keep the insulation box dry, which solves the problem that the high-pressure direct-hanging cascade energy storage unit in the prior art is difficult to effectively resist high temperature and severe cold environments when used outdoors, and it is difficult to improve the heat dissipation and insulation effects inside the energy storage unit, and in humid weather, it is difficult to introduce hot air near the energy storage unit to keep it dry.

[0008] Preferably, the upper and lower ends of the moving block fit with the upper and lower ends of the inner wall of the carrying frame, and the ends of two corresponding moving blocks in the left and right directions that are away from each other fit with the left and right ends of the inner wall of the carrying frame respectively.

[0009] Preferably, the return air mechanism includes a return air bend pipe, a return air straight pipe, a first slot body and a second slot body; one end of the return air bend pipe is fixedly connected to both ends of the left and right sides of the thermal insulation box, the return air bend pipe is U-shaped and its opening faces the center of the thermal insulation box, a second slot body is penetrated through the upper end of the top plate, a return air straight pipe is fixedly connected to the upper end of the top plate, the inner wall of the lower end of the return air straight pipe is flush with the inner wall of the second slot body, the other ends of the two return air bend pipes cross and penetrate each other at the upper ends of the return air straight pipes, the interiors of the return air bend pipe and the return air straight pipe are penetrated with each other, a first slot body is penetrated through both ends of the left and right sides of the thermal insulation box, the inner wall of the first slot body is flush with the inner wall of the return air bend pipe, an axial flow fan is fixedly connected to the inner wall of the lower half of the return air bend pipe close to the thermal insulation box, and the air outlet end of the axial flow fan faces the end away from the thermal insulation box.

[0010] Preferably, a fixing ring is fixedly connected to the inner wall of the return air elbow, a fixing block is fixedly connected to the inner wall of the fixing ring, and an electric heating rod is fixedly connected to the center of the upper end of the fixing block in a penetrating manner.

[0011] Preferably, a first supporting plate is fixedly connected to the bottom surface of the inner wall of the insulation box, a single-phase energy storage inverter module is arranged above the first supporting plate, the lower end of the single-phase energy storage inverter module is fixedly connected to a first heat sink that is evenly distributed, the lower end of the first heat sink is fixedly connected to the upper end of the first supporting plate, and the upper end of the single-phase energy storage inverter module is fixedly connected to a second heat sink that is evenly distributed.

[0012] Preferably, two connecting blocks are fixed to the left and right ends of the inner wall of the insulation box, a heat conduction plate is fixed to the end of the connecting block close to the center of the insulation box, an air heating rod is fixed to the upper end of the heat conduction plate, two heat conduction columns are fixed to the front and rear ends of the heat conduction plate, and an air heating block is fixed to the end of the heat conduction column away from the heat conduction plate.

[0013] Preferably, the four corner edges of the upper end of the first carrier plate are fixedly connected with upright blocks, the upper parts of the left and right ends of the upright blocks are fixedly connected with evenly distributed third heat sinks, the side walls of the upright blocks are fixedly connected with sleeve blocks, the inner walls of the sleeve blocks are fixedly connected with battery packs, the upright blocks and the sleeve blocks are made of heat-conducting materials, the upper end of the first carrier plate is fixedly connected with a carrier phase shift control module and a temperature and humidity sensor, Preferably, a plurality of bearing posts are fixedly connected to the upper end of the first bearing plate, the upper ends of the plurality of bearing posts are commonly fixedly connected to the second bearing plate, and the upper end of the second bearing plate is fixedly connected to the voltage protector.

[0014] Preferably, two ventilation bodies are fixedly connected to the front and rear ends of the thermal insulation box, a fixed cylinder is fixedly connected to the upper end of the ventilation body, a fourth groove body is penetrated through the end of the ventilation body close to the thermal insulation box, two third groove bodies are penetrated through the front and rear ends of the thermal insulation box, the inner wall of the third groove body is flush with the inner wall of the fourth groove body, the interior of the ventilation body is a hollow structure, and the interior of the ventilation body and the interior of the fixed cylinder are interconnected.

[0015] Preferably, a first air outlet slot is formed through both ends of the air outlet body, the interior of the first air outlet slot is communicated with the interior of the carrying frame, and the wind shield assembly includes a wind shield body, a second air outlet slot, a slot, a groove, a baffle and a handle; the wind shield body is fixedly connected to the end of the air outlet body away from the carrying frame, the lower end of the wind shield body is fixedly connected to the upper end of the bottom plate, the second air outlet slot is formed through the left end of the wind shield body, the interior of the second air outlet slot is communicated with the interior of the first air outlet slot, the slot is formed through the upper end of the wind shield body, a groove is formed on the bottom surface of the inner wall of the second air outlet slot, the groove and the slot correspond to each other in the vertical direction, a baffle is placed on the inner walls of the groove and the slot, and a handle is fixed to the upper end of the baffle.

[0016] The beneficial effects of the present invention are as follows: by turning on the motor to rotate the double-thread screw, the threaded sleeve will approach or move away from each other along the side wall of the double-thread screw, which will cause the two moving blocks to approach or move away from each other, and finally the first sealing block will move out from the side wall of the second sealing block, and a space for air outlet will be formed between the first sealing block and the second sealing block. Then, the wind force generated by turning on the return air mechanism can pass through the ventilation slot and the inside of the bearing frame, and then flow out through the space formed between the first sealing block after the first sealing block moves and the second sealing block. This part of the air will flow out through the air outlet body and the wind shield assembly, so as to realize the rapid discharge of the air in the insulation box. When there is no need for ventilation in the bearing frame, When the wind blows, the first sealing block moves to the side wall of the second sealing block, so that the front and rear ends of the supporting frame can be sealed, thereby improving the insulation effect in the insulation box, and the device can have better performance in both high temperature and cold environments. In addition, opening the return air mechanism can input hot air into the insulation box to keep the insulation box dry, which solves the problem that the high-pressure direct-hanging cascade energy storage unit in the prior art is difficult to effectively resist high temperature and severe cold environments when used outdoors, and it is difficult to improve the heat dissipation and insulation effect inside the energy storage unit, and in humid weather, it is difficult to pass hot air near the energy storage unit to keep it dry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a three-dimensional structural schematic diagram of a high-voltage direct-mounted cascade energy storage unit of the present invention; Figure 2 What is shown is a three-dimensional structural schematic diagram of a return air mechanism of a high-voltage direct-mounted cascade energy storage unit of the present invention; Figure 3Shown is a three-dimensional structural schematic diagram of a heat preservation box of a high-voltage direct-mounted cascade energy storage unit of the present invention; Figure 4 Shown is a three-dimensional structural schematic diagram of a first carrier plate of a high-voltage direct-mounted cascade energy storage unit of the present invention; Figure 5 Shown is a three-dimensional structural schematic diagram of a bearing frame of a high-voltage direct-mounted cascade energy storage unit of the present invention; Figure 6 Shown is a schematic diagram of a three-dimensional split structure of an air outlet body and a wind shield assembly of a high-voltage direct-mounted cascade energy storage unit of the present invention; Figure 7 Shown is a schematic diagram of the three-dimensional structure of a ventilation body of a high-voltage direct-mounted cascade energy storage unit of the present invention; Figure 8 Shown is a schematic diagram of the three-dimensional structure inside the insulation box of a high-voltage direct-mounted cascade energy storage unit of the present invention.

[0018] The marks in the attached drawings are: 1, bottom plate; 2, support block; 3, bearing frame; 301, fixed body; 302, double-thread screw; 303, threaded sleeve; 304, moving block; 305, first sealing block; 306, fixed seat; 307, motor; 308, second sealing block; 4, insulation box; 401, first bearing plate; 402, single-phase energy storage converter module; 403, first heat sink; 404, second heat sink; 405, connecting block; 406, heat conduction plate; 407, air heating rod; 408, heat conduction column; 409, air heating block; 5, top plate; 6, air outlet body; 601, first air outlet slot; 7, wind shield assembly; 701, wind shield body; 7 02. Second air outlet slot; 703. Slot; 704. Groove; 705. Baffle; 706. Handle; 8. Return air mechanism; 801. Return air elbow; 802. Return air straight pipe; 803. Fixing ring; 804. Fixing block; 805. Electric heating rod; 806. Axial flow fan; 807. First slot body; 808. Second slot body; 9. Ventilation slot; 10. Vertical block; 11. Third heat sink; 12. Sleeve block; 13. Battery pack; 14. Carrier phase shift control module; 15. Temperature and humidity sensor; 16. Support column; 17. Second support plate; 18. Voltage protector; 19. Ventilation body; 20. Fixing cylinder; 21. Third slot body; 22. Fourth slot body. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Example 1: Please refer to Figure 1-Figure 8A high-voltage direct-hanging cascade energy storage unit includes a bottom plate 1; a support block 2 is fixedly connected to the center of the upper end of the bottom plate 1, a bearing frame 3 is fixedly connected to the upper end of the support block 2, a heat preservation box 4 is fixedly connected to the upper end of the bearing frame 3, a top plate 5 is fixedly connected to the upper end of the heat preservation box 4, an air outlet 6 is fixedly connected to the front and rear ends of the bearing frame 3, a wind shield assembly 7 is arranged at one end of the air outlet 6 away from the bearing frame 3, a return air mechanism 8 for returning air is arranged at the left and right ends of the heat preservation box 4, and a ventilation slot 9 evenly distributed is opened through the upper end of the bearing frame 3; The bearing frame 3 is provided with a sealing mechanism, and the bearing frame 3 includes a fixed body 301, a double-thread screw 302, a threaded sleeve 303, a moving block 304, a first sealing block 305, a fixing seat 306, a motor 307 and a second sealing block 308; the fixed body 301 is fixedly connected to the left and right edges of the middle part of the upper end of the bearing frame 3, and the double-thread screw 302 is rotatably installed at the front and rear ends of the fixed body 301, and the threads of the outer wall of the double-thread screw 302 on both sides of the center are opposite to each other, and the outer wall of the double-thread screw 302 is movably installed with two threaded sleeves 303 respectively adapted to the two kinds of threaded threads, and the side wall of the threaded sleeve 303 is fixedly connected to the moving block 304, and the bearing The second sealing block 308 is fixedly connected to the front and rear edges of the bottom of the inner wall of the frame 3, and the second sealing block 308 is in an inverted T shape. The two corresponding movable blocks 304 in the left and right directions are fixedly connected to the first sealing block 305 at one end close to each other. The two first sealing blocks 305 and the second sealing blocks 308 corresponding to the left and right directions together form a rectangular structure. The upper ends of the first sealing block 305 and the movable block 304 are both attached to the upper end surface of the inner wall of the supporting frame 3. Two fixed seats 306 are fixedly connected to the rear edge of the upper end of the supporting frame 3. The inner wall of the fixed seat 306 is fixedly connected to the motor 307, and the front end of the output shaft of the motor 307 is fixedly connected to the rear end of the double-thread screw 302.

[0021] When in use, when it is necessary to ventilate the inside of the carrier frame 3, the motor 307 is turned on to rotate the double-thread screw 302, and the threaded sleeve 303 will move closer to or farther away from each other along the side wall of the double-thread screw 302, which will cause the two moving blocks 304 to move closer to or farther away from each other, and finally the first sealing block 305 will move out from the side wall of the second sealing block 308, and a space for air to escape will be formed between the first sealing block 305 and the second sealing block 308, and then the wind force generated by turning on the return air mechanism 8 can pass through the ventilation slot 9 and the inside of the carrier frame 3, and then through the first sealing block 305 moving and The space formed between the second sealing blocks 308 flows outward, and this part of air will flow outward through the air outlet body 6 and the wind shield assembly 7, thereby realizing the rapid discharge of the air in the insulation box 4. When there is no need for ventilation in the supporting frame 3, the first sealing block 305 is moved to the side wall of the second sealing block 308, so that the front and rear ends of the supporting frame 3 can be sealed, thereby improving the insulation effect in the insulation box 4, and the device can have better performance in both high temperature and cold environments. In addition, opening the return air mechanism 8 can input hot air into the insulation box 4, so as to keep the insulation box 4 dry.

[0022] See also Figure 1 and Figure 5 In this embodiment, the upper and lower ends of the moving block 304 are in contact with the upper and lower ends of the inner wall of the carrying frame 3, and the ends of the two moving blocks 304 corresponding to each other in the left and right directions are in contact with the left and right ends of the inner wall of the carrying frame 3 respectively. The two moving blocks 304, the two first sealing blocks 305 and the second sealing block 308 can form a rectangular structure, and the side walls of the rectangular structure are in contact with the inner wall of the carrying frame 3, so as to seal the front and rear ends of the carrying frame 3.

[0023] Example 2: Please refer to Figure 2On the basis of Example 1, the present application provides a technical solution: the return air mechanism 8 includes a return air bend 801, a return air straight duct 802, a first slot body 807 and a second slot body 808; one end of the return air bend 801 is fixedly connected to both ends of the left and right ends of the heat preservation box 4, the return air bend 801 is U-shaped and its opening faces the center of the heat preservation box 4, a second slot body 808 is penetrated through the upper end of the top plate 5, a return air straight duct 802 is fixedly connected to the upper end of the top plate 5, the inner wall of the lower end of the return air straight duct 802 is flush with the inner wall of the second slot body 808, the other ends of the two return air bends 801 intersect and penetrate each other at the upper end of the return air straight duct 802, and the return air bends 801 are connected to each other. The interiors of the tube 801 and the return air straight tube 802 are interconnected, and the left and right ends of the insulation box 4 are penetrated by a first slot body 807, the inner wall of the first slot body 807 is flush with the inner wall of the return air bend 801, and an axial flow fan 806 is fixedly connected to the inner wall of the lower half of the return air bend 801 close to the insulation box 4, and the air outlet end of the axial flow fan 806 faces the end away from the insulation box 4. When the air in the insulation box 4 needs to be pumped, the axial flow fan 806 can be turned on to draw the air in the insulation box 4 into the return air bend 801, and then injected into the interior of the insulation box 4 through the return air straight tube 802 and the second slot body 808, thereby realizing the circulation of air.

[0024] See also Figure 1 and Figure 2 In this embodiment, a fixing ring 803 is fixedly connected to the inner wall of the return air bend 801, a fixing block 804 is fixedly connected to the inner wall of the fixing ring 803, and an electric heating rod 805 is fixedly connected to the center of the upper end of the fixing block 804. When it is necessary to heat the air flowing through the return air bend 801, turning on the electric heating rod 805 can heat the air in the return air bend 801, so that the hot air can flow into the interior of the insulation box 4 to dry the interior of the insulation box 4.

[0025] See also Figure 1 and Figure 3 In this embodiment, a first bearing plate 401 is fixedly connected to the bottom surface of the inner wall of the thermal insulation box 4, a single-phase energy storage inverter module 402 is arranged above the first bearing plate 401, a first heat sink 403 with uniform distribution is fixedly connected to the lower end of the single-phase energy storage inverter module 402, the lower end of the first heat sink 403 is fixedly connected to the upper end of the first bearing plate 401, and a second heat sink 404 with uniform distribution is fixedly connected to the upper end of the single-phase energy storage inverter module 402. By arranging the first heat sink 403 and the second heat sink 404, the heat dissipation effect of the single-phase energy storage inverter module 402 can be improved.

[0026] See also Figure 1 and Figure 3In the present embodiment, two connecting blocks 405 are fixedly connected to the left and right ends of the inner wall of the insulated box 4, a heat conducting plate 406 is fixedly connected to one end of the connecting block 405 close to the center of the insulated box 4, an air heating rod 407 is fixedly connected to the upper end of the heat conducting plate 406, two heat conducting columns 408 are fixedly connected to the front and rear ends of the heat conducting plate 406, an air heating block 409 is fixedly connected to one end of the heat conducting column 408 away from the heat conducting plate 406, when it is necessary to heat the inside of the insulated box 4, the air heating rod 407 and the air heating block 409 are turned on, so that the inside of the insulated box 4 can be quickly heated, which is beneficial for the use of the device in cold environments.

[0027] See also Figure 1 and Figure 3 In this embodiment, a vertical block 10 is fixedly connected to the four corner edges of the upper end of the first carrier plate 401, and evenly distributed third heat sinks 11 are fixedly connected to the upper parts of the left and right ends of the vertical block 10, a sleeve block 12 is fixedly connected to the side wall of the vertical block 10, and a battery pack 13 is fixedly connected to the inner wall of the sleeve block 12. The vertical block 10 and the sleeve block 12 are both made of heat-conducting materials. A carrier phase shift control module 14 and a temperature and humidity sensor 15 are fixedly connected to the upper end of the first carrier plate 401, and the heat generated by the battery pack 13 during operation can be dissipated through the vertical block 10 and the third heat sink 11, thereby improving the heat dissipation effect on the battery pack 13.

[0028] See also Figure 1 and Figure 4 In this embodiment, a plurality of supporting columns 16 are fixedly connected to the upper end of the first supporting plate 401, and the upper ends of the plurality of supporting columns 16 are commonly fixedly connected to the second supporting plate 17, and the upper end of the second supporting plate 17 is fixedly connected to the voltage protector 18. By setting the voltage protector 18, the voltage can be protected.

[0029] Example 3: Please refer to Figure 1 , Figure 7 and Figure 8 On the basis of Example 1, the present application provides a technical solution: two ventilation bodies 19 are fixedly connected to the front and rear ends of the insulated box 4, a fixed cylinder 20 is fixedly connected to the upper end of the ventilation body 19, a fourth slot 22 is penetrated through the end of the ventilation body 19 close to the insulated box 4, two third slots 21 are penetrated through the front and rear ends of the insulated box 4, the inner wall of the third slot 21 is flush with the inner wall of the fourth slot 22, the interior of the ventilation body 19 is a hollow structure, the interior of the ventilation body 19 and the interior of the fixed cylinder 20 are interconnected, the wires in the insulated box 4 can be placed into the interior of the ventilation body 19 through the third slot 21 and the fourth slot 22, and then connected to the external power grid through the fixed cylinder 20.

[0030] Example 4: Please refer to Figure 6On the basis of Example 1, the present application provides a technical solution: first air outlet slots 601 are provided at both ends of the air outlet body 6, the interior of the first air outlet slot 601 is interconnected with the interior of the carrying frame 3, and the wind shielding assembly 7 includes a wind shielding body 701, a second air outlet slot 702, a slot 703, a groove 704, a baffle 705, and a handle 706; the end of the air outlet body 6 away from the carrying frame 3 is fixedly connected to the wind shielding body 701, the lower end of the wind shielding body 701 is fixedly connected to the upper end of the bottom plate 1, the left end of the wind shielding body 701 is provided with a second air outlet slot 702, the interior of the second air outlet slot 702 is interconnected with the interior of the first air outlet slot 601, and the upper end of the wind shielding body 701 is provided with a second air outlet slot 702. A slot 703 is penetrated, and a groove 704 is formed on the bottom surface of the inner wall of the second air outlet slot 702. The groove 704 and the slot 703 correspond to each other in the vertical direction. A baffle 705 is placed on the inner walls of the groove 704 and the slot 703. A handle 706 is fixed to the upper end of the baffle 705. The air flowing out of the supporting frame 3 will flow into the interior of the wind shield body 701 through the first air outlet slot 601. When the second air outlet slot 702 needs to be blocked, the baffle 705 is manually placed on the inner walls of the groove 704 and the slot 703 to block the second air outlet slot 702. Otherwise, the air flowing into the second air outlet slot 702 can be discharged outward.

[0031] Working principle: First, when ventilation is required inside the carrier frame 3, the motor 307 is turned on to rotate the double-thread screw 302, and the threaded sleeve 303 moves closer to or farther from each other along the side wall of the double-thread screw 302, which makes the two moving blocks 304 move closer to or farther from each other, and finally makes the first sealing block 305 move out from the side wall of the second sealing block 308, and a space for air to escape is formed between the first sealing block 305 and the second sealing block 308; Then, the wind force generated by turning on the return air mechanism 8 can pass through the ventilation slots 9 and the interior of the carrier frame 3. Specifically, turning on the axial flow fan 806 can draw the air in the thermal insulation box 4 into the return air elbow 801, and then inject it into the interior of the thermal insulation box 4 through the return air straight pipe 802 and the second slot 808, so as to realize the circulation of air. Due to the air flow in the heat preservation box 4, the air will flow outward through the space formed between the first sealing block 305 and the second sealing block 308 after the first sealing block 305 moves. This part of the air will flow outward through the air outlet body 6 and the wind shield assembly 7, so as to realize the rapid discharge of the air in the heat preservation box 4. Specifically, the air flowing out of the carrier frame 3 will flow into the inside of the wind shield body 701 through the first air outlet slot 601. When the second air outlet slot 702 needs to be blocked, the baffle 705 is manually placed on the inner wall of the groove 704 and the slot 703 to block the second air outlet slot 702. Otherwise, the air flowing into the second air outlet slot 702 can be discharged outward. When ventilation is not required in the carrying frame 3, the first sealing block 305 is moved to the side wall of the second sealing block 308, so that the front and rear ends of the carrying frame 3 can be sealed, thereby improving the heat preservation effect in the heat preservation box 4, so that the device can perform better in both high temperature and cold environments; In addition, when it is necessary to heat the air flowing through the return air elbow 801, the electric heating rod 805 can be turned on to heat the air in the return air elbow 801, so that the hot air can flow into the interior of the heat preservation box 4 to dry the interior of the heat preservation box 4; By providing the first heat sink 403 and the second heat sink 404, the heat dissipation effect of the single-phase energy storage converter module 402 can be improved; when the interior of the heat preservation box 4 needs to be heated, the air heating rod 407 and the air heating block 409 are turned on to quickly heat the interior of the heat preservation box 4, which is beneficial for the use of the device in a cold environment; By providing the third heat sink 11, the heat generated by the battery pack 13 during operation can be dissipated through the vertical block 10 and the third heat sink 11, thereby improving the heat dissipation effect of the battery pack 13. By providing the voltage protector 18, the voltage can be protected. The wires in the heat preservation box 4 can be placed into the interior of the ventilation body 19 through the third slot body 21 and the fourth slot body 22, and then connected to the external power grid through the fixing tube 20, which can improve the protection of the cables.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A high-voltage direct-mounted cascade energy storage unit, comprising a base plate (1); characterized in that: A support block (2) is fixedly connected to the center of the upper end of the bottom plate (1), a bearing frame (3) is fixedly connected to the upper end of the support block (2), a heat preservation box (4) is fixedly connected to the upper end of the heat preservation box (3), a top plate (5) is fixedly connected to the upper end of the heat preservation box (4), an air outlet body (6) is fixedly connected to the front and rear ends of the bearing frame (3), a wind shielding component (7) is arranged at one end of the air outlet body (6) away from the bearing frame (3), a return air mechanism (8) for returning air is arranged at the left and right ends of the heat preservation box (4), and evenly distributed ventilation slots (9) are opened through the upper end of the bearing frame (3); The bearing frame (3) is provided with a sealing mechanism, which comprises a fixed body (301), a double-thread screw (302), a threaded sleeve (303), a moving block (304), a first sealing block (305), a fixing seat (306), a motor (307) and a second sealing block (308); the fixed body (301) is fixedly connected to the left and right edges of the middle part of the upper end of the bearing frame (3); the double-thread screw (302) is rotatably installed at the front and rear ends of the fixed body (301); the threads of the outer wall of the double-thread screw (302) located on both sides of the center are opposite to each other; two threaded sleeves (303) respectively matched with the two threaded threads are movably installed on the outer wall of the double-thread screw (302); the moving block (304) is fixedly connected to the side wall of the threaded sleeve (303); A second sealing block (308) is fixedly connected to the front and rear edges of the bottom of the inner wall of the supporting frame (3), and the second sealing block (308) is in an inverted T shape. The two movable blocks (304) corresponding to each other in the left and right directions are fixedly connected to the first sealing block (305) at one end close to each other. The two first sealing blocks (305) and the second sealing block (308) corresponding to each other in the left and right directions together form a rectangular parallelepiped structure. The upper ends of the first sealing block (305) and the movable block (304) are both attached to the upper end surface of the inner wall of the supporting frame (3). Two fixed seats (306) are fixedly connected to the rear edge of the upper end of the supporting frame (3), and the inner wall of the fixed seat (306) is fixedly connected to a motor (307). The front end of the output shaft of the motor (307) is fixedly connected to the rear end of the double-thread screw (302).

2. A high-voltage direct-mounted cascade energy storage unit according to claim 1, characterized in that: The upper and lower ends of the moving block (304) fit with the upper and lower ends of the inner wall of the carrying frame (3), and the ends of two corresponding moving blocks (304) that are away from each other in the left and right directions fit with the left and right ends of the inner wall of the carrying frame (3) respectively.

3. A high-voltage direct-mounted cascade energy storage unit according to claim 1, characterized in that: The return air mechanism (8) comprises a return air bend (801), a return air straight pipe (802), a first trough (807) and a second trough (808); one end of the return air bend (801) is fixedly connected to both left and right ends of the heat preservation box (4); the return air bend (801) is U-shaped and its opening faces the center of the heat preservation box (4); the second trough (808) is penetrated through the upper end of the top plate (5); the return air straight pipe (802) is fixedly connected to the upper end of the top plate (5); the inner wall of the lower end of the return air straight pipe (802) is flush with the inner wall of the second trough (808); the two return air bends (801) are connected to the heat preservation box (4); The other end of the air bend pipe (801) intersects with and penetrates the upper end of the return air straight pipe (802); the interiors of the return air bend pipe (801) and the return air straight pipe (802) are mutually penetrated; a first slot body (807) is provided at both left and right ends of the thermal insulation box (4); the inner wall of the first slot body (807) is flush with the inner wall of the return air bend pipe (801); an axial flow fan (806) is fixedly connected to the inner wall of one end of the lower half of the return air bend pipe (801) close to the thermal insulation box (4); and the air outlet end of the axial flow fan (806) faces the end away from the thermal insulation box (4).

4. A high-voltage direct-mounted cascade energy storage unit according to claim 3, characterized in that: A fixing ring (803) is fixedly connected to the inner wall of the return air bend pipe (801), a fixing block (804) is fixedly connected to the inner wall of the fixing ring (803), and an electric heating rod (805) is fixedly connected in a penetrating manner to the center of the upper end of the fixing block (804).

5. A high-voltage direct-mounted cascade energy storage unit according to claim 1, characterized in that: A first bearing plate (401) is fixedly connected to the bottom surface of the inner wall of the heat preservation box (4), a single-phase energy storage converter module (402) is arranged above the first bearing plate (401), a first heat sink (403) distributed evenly is fixedly connected to the lower end of the single-phase energy storage converter module (402), the lower end of the first heat sink (403) is fixedly connected to the upper end of the first bearing plate (401), and a second heat sink (404) distributed evenly is fixedly connected to the upper end of the single-phase energy storage converter module (402).

6. A high-voltage direct-mounted cascade energy storage unit according to claim 5, characterized in that: Two connecting blocks (405) are fixedly connected to the left and right ends of the inner wall of the heat preservation box (4); a heat conducting plate (406) is fixedly connected to one end of the connecting block (405) close to the center of the heat preservation box (4); an air heating rod (407) is fixedly connected to the upper end of the heat conducting plate (406); two heat conducting columns (408) are fixedly connected to the front and rear ends of the heat conducting plate (406); and an air heating block (409) is fixedly connected to one end of the heat conducting column (408) away from the heat conducting plate (406).

7. A high-voltage direct-mounted cascade energy storage unit according to claim 5, characterized in that: A vertical block (10) is fixedly connected to the four corner edges of the upper end of the first carrier plate (401); evenly distributed third heat sinks (11) are fixedly connected to the upper portions of the left and right ends of the vertical block (10); a sleeve block (12) is fixedly connected to the side wall of the vertical block (10); a battery pack (13) is fixedly connected to the inner wall of the sleeve block (12); the vertical block (10) and the sleeve block (12) are both made of heat-conducting material; and a carrier phase shift control module (14) and a temperature and humidity sensor (15) are fixedly connected to the upper end of the first carrier plate (401).

8. A high-voltage direct-mounted cascade energy storage unit according to claim 5, characterized in that: The upper end of the first bearing plate (401) is fixedly connected to a plurality of bearing columns (16), the upper ends of the plurality of bearing columns (16) are commonly fixedly connected to a second bearing plate (17), and the upper end of the second bearing plate (17) is fixedly connected to a voltage protector (18).

9. A high-voltage direct-mounted cascade energy storage unit according to claim 1, characterized in that: Two ventilation bodies (19) are fixedly connected to both front and rear ends of the heat preservation box (4); a fixed cylinder (20) is fixedly connected to the upper end of the ventilation body (19); a fourth groove body (22) is penetrated through one end of the ventilation body (19) close to the heat preservation box (4); two third groove bodies (21) are penetrated through both front and rear ends of the heat preservation box (4); the inner wall of the third groove body (21) is flush with the inner wall of the fourth groove body (22); the interior of the ventilation body (19) is a hollow structure; the interior of the ventilation body (19) and the interior of the fixed cylinder (20) are interconnected.

10. A high-voltage direct-mounted cascade energy storage unit according to claim 1, characterized in that: The first air outlet slots (601) are formed through both ends of the air outlet body (6); the interior of the first air outlet slot (601) and the interior of the supporting frame (3) are interconnected; the wind shielding assembly (7) comprises a wind shielding body (701), a second air outlet slot (702), a slot (703), a groove (704), a baffle (705), and a handle (706); the wind shielding body (701) is fixedly connected to one end of the air outlet body (6) away from the supporting frame (3); the lower end of the wind shielding body (701) is fixedly connected to the upper end of the bottom plate (1); ... A second air outlet slot (702) is provided through the left end, the interior of the second air outlet slot (702) and the interior of the first air outlet slot (601) are interconnected, a slot (703) is provided through the upper end of the wind shield (701), a groove (704) is provided on the bottom surface of the inner wall of the second air outlet slot (702), the groove (704) and the slot (703) correspond to each other in the vertical direction, a baffle (705) is placed on the inner walls of the groove (704) and the slot (703), and a handle (706) is fixed to the upper end of the baffle (705).

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