A modular energy storage device for high voltage power system

Abstract

The present invention discloses a modular energy storage device for a high-voltage power system, which belongs to the technical field of power energy storage, and includes: a plurality of modular energy storage elements, which are used for energy storage in a high-voltage power system, and the plurality of modular energy storage elements are all arranged in an energy storage box, the inner wall of the energy storage box is connected with a limit frame for limiting the modular energy storage elements, and the side of the energy storage box is rotatably connected with a box door; six liquid storage boxes, which are respectively connected and fixed with the side of the box door and the five sides of the energy storage box, and the liquid storage box is provided with insulating oil for heat conduction, and two adjacent liquid storage boxes are connected through a plurality of retractable bellows, and the inner wall of the liquid storage box is installed with a protective linear motor with a protective function, and the moving part of the protective linear motor is connected with a scraper, and the side of the scraper is bonded with a rubber pad for resisting the box door or the energy storage box. The modular energy storage device of the high-voltage power system can not only perform multiple heat dissipation and cooling treatments, but also perform fire extinguishing.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric energy storage, and in particular to a modular energy storage device for a high-voltage electric power system. Background Art

[0002] Considering the cost, usage scenarios and safety, most of the existing energy storage devices use battery energy storage to store excess or spare electrical energy. In order to increase the voltage of the energy storage device, several batteries are generally connected in series. However, when multiple batteries are put together to work, a lot of heat will be generated. When working under load, high temperature will affect the safety of the battery. Traditional heat dissipation will design fans to blow air to dissipate heat, but the heat dissipation effect is average.

[0003] After searching, the Chinese patent document (authorization announcement number CN116995371B) is a modular energy storage device for a high-voltage power system, including a drawer box and a battery module. There are two battery modules, which are symmetrically installed side by side in the drawer box. A ventilation gap is left between the two battery modules. A cooling fan and a battery management module are arranged on the front side of the drawer box, and a vent is arranged on the back side of the drawer box. A box cover is arranged on the top of the drawer box, and charging piles are arranged on both sides of the drawer box corresponding to the cooling fan. The two charging piles are connected in series with the two battery modules. The battery module includes a frame, a battery unit and a radiator. The present invention can increase the voltage of the energy storage device by setting two battery modules in series. When one of the battery units fails or is removed, it does not affect the normal operation of other battery units. At the same time, the radiator can be used to keep the battery module in a normal working environment, effectively improving the safety of the use of the energy storage device. When working under load, high temperature will affect the safety of the battery. The fan blows air to dissipate heat, and the heat dissipation effect is general. Summary of the invention

[0004] The object of the present invention is to provide a modular energy storage device for a high voltage power system to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a modular energy storage device for a high-voltage power system, comprising:

[0006] Multiple modular energy storage elements are used for energy storage in a high-voltage power system. The multiple modular energy storage elements are all arranged in an energy storage box. The inner wall of the energy storage box is connected to a limit frame for limiting the modular energy storage elements. The side of the energy storage box is rotatably connected to a box door.

[0007] Six liquid storage boxes are respectively connected and fixed to the side of the box door and the five sides of the energy storage box. Insulating oil for heat conduction is arranged in the liquid storage box. Two adjacent liquid storage boxes are connected through a plurality of retractable bellows. A protective linear motor with a protective function is installed on the inner wall of the liquid storage box. The moving part of the protective linear motor is connected to a scraper. The side of the scraper is bonded with a rubber pad for contacting the box door or the energy storage box.

[0008] The upper liquid storage box is connected to a temporary liquid storage tank through an insulating block. Power pumps are installed on both vertical sides of the temporary liquid storage tank. The power pump is connected to one of the liquid storage boxes through a first connecting pipe, and the power pump is connected to the temporary liquid storage tank through a second connecting pipe. The temporary liquid storage tank is connected to another liquid storage box through a connecting auxiliary pipe. A semiconductor refrigeration plate is connected to the inner wall of the temporary liquid storage tank, and the working part and heat release part of the semiconductor refrigeration plate are both outside the temporary liquid storage tank.

[0009] As a preferred implementation scheme, the side of the energy storage box is connected to an insulation box via multiple insulation blocks, the insulation box is connected to the energy storage box via multiple air inlet pipes with valves, the energy storage box is connected and fixed to the box door via a lock, and the energy storage box, liquid storage box and box door are all made of heat-conducting materials.

[0010] As a preferred embodiment, a plurality of fans are embedded in the bottom end of the heat insulation box, and two transverse linear motors are installed at the bottom end of the heat insulation box.

[0011] As a preferred embodiment, the inner wall of the fan is connected with a dustproof net, and the moving parts of the two transverse linear motors are connected with a cleaning brush for cleaning the dustproof net.

[0012] As a preferred embodiment, a side of the energy storage box away from the air inlet pipe is connected to a plurality of air outlet pipes with valves.

[0013] As a preferred embodiment, the inner cavity of the energy storage box is provided with an electric fire extinguisher, the electric fire extinguisher is made of heat-resistant material, and the inner top wall of the energy storage box is connected with a plurality of fixing clips for fixing the electric fire extinguisher.

[0014] As a preferred embodiment, the inner top wall of the energy storage box is detachably connected to an air box, and the electric fire extinguisher is connected to the air box via a discharge pipe with a solenoid valve.

[0015] As a preferred embodiment, two vertical outer walls of the energy storage box are connected to discharge auxiliary pipes, one of which is equipped with a solenoid valve on its outer periphery, and the other discharge auxiliary pipe passes through the energy storage box and extends to the outside of the energy storage box, and an air-controlled valve is installed on its outer periphery.

[0016] As a preferred embodiment, a wire channel for passing the wires is opened on the side of the energy storage box, the inner wall of the wire channel is connected to a deformable rubber sleeve for wrapping the wires, and the outer periphery of the rubber sleeve is connected to a plurality of rubber clamps for fixing the rubber sleeve.

[0017] As a preferred implementation scheme, a plurality of temperature sensors are installed on the inner wall of the energy storage box, and a plurality of anti-slip pads made of rubber are bonded to the bottom end of the energy storage box.

[0018] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0019] The modular energy storage device of the high-voltage power system uses a fan to blow air, so that auxiliary external air enters the energy storage box from the air inlet pipe, takes away the hot air in the energy storage box, and exhausts air from the air outlet pipe to achieve heat dissipation. The insulating oil between the energy storage box and the liquid storage box can conduct heat. The design of the bellows can assist the insulating oil to flow, thereby performing double heat dissipation. The moving part of the protective linear motor is equipped with a scraper that moves back and forth, so that the rubber pad scrapes the box door or the energy storage box to improve the treatment effect of the insulating oil. The suction of the power pump can realize the flow of the insulating oil. If it is necessary to increase the cooling effect, the semiconductor refrigeration sheet can be turned on to cool the insulating oil, and the suction of the power pump can achieve triple heat dissipation.

[0020] In the modular energy storage device of the high-voltage power system, if a fire occurs, the solenoid valves of the discharge pipe and the discharge sub-pipe in the energy storage box are opened, and the electric fire extinguishing material is sprayed out. If the electric fire extinguisher is damaged by high temperature, the gas control valve of the discharge sub-pipe outside the energy storage box will be opened, and the fire extinguishing material in the electric fire extinguisher will be discharged to the outside, which will not affect the modular energy storage element;

[0021] The modular energy storage device of the high-voltage power system, the dust screen of the fan can filter the air to protect the fan, the horizontal linear motor drives the cleaning brush to move back and forth, and then cleans the dust screen to prevent the dust screen from being blocked and affecting the normal operation of the fan, the rubber sleeve can wrap the wire, and the fixing of the rubber clamp can improve the tightness between the rubber sleeve and the wire, reducing the possibility of air and dust entering the energy storage box;

[0022] The modular energy storage equipment of the high-voltage power system can not only perform multiple heat dissipation and cooling operations, but also extinguish fires. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 For the present invention Figure 1 A magnified view of the structure at center A;

[0025] Figure 3 It is a structural schematic diagram of the temporary liquid storage tank of the present invention;

[0026] Figure 4 is a cross-sectional view of a temporary liquid storage tank of the present invention;

[0027] Figure 5 This is a front view of the energy storage box of the present invention after removing the box door;

[0028] Figure 6 A cross-sectional view of the energy storage box and the modular energy storage element of the present invention;

[0029] Figure 7 is a cross-sectional view of the liquid storage box of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the liquid storage box of the present invention from another perspective;

[0031] Fig. 9 It is a schematic structural diagram of the heat insulation box of the present invention when viewed from above;

[0032] Fig.10 It is a top view of the electric fire extinguisher of the present invention.

[0033] Description of reference numerals:

[0034] In the figure:

[0035] 1. Modular energy storage element; 2. Energy storage box; 3. Limit frame; 4. Box door; 5. Liquid storage box; 6. Bellows; 7. Protective linear motor; 8. Scraper; 9. Rubber pad; 10. Temporary liquid storage tank; 11. Power pump; 12. First connecting pipe; 13. Second connecting pipe; 14. Connecting auxiliary pipe; 15. Semiconductor refrigeration plate; 16. Insulation box; 17. Inlet pipe; 18. Fan; 19. Horizontal linear motor; 20. Cleaning brush; 21. Exhaust pipe; 22. Electric fire extinguisher; 23. Fixing clamp; 24. Air box; 25. Discharge pipe; 26. Discharge auxiliary pipe; 27. Rubber sleeve; 28. Rubber clamp; 29. ​​Temperature sensor; 30. Anti-slip mat. DETAILED DESCRIPTION

[0036] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0037] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0038] This application is in a special usage situation. Each instrument and structure is specially treated to play a protective role, and is regularly replaced and repaired to ensure normal operation.

[0039] See also Figures 1 to 10, this embodiment includes:

[0040] A plurality of modular energy storage elements 1 are used for energy storage in a high-voltage power system. The plurality of modular energy storage elements 1 are all arranged in an energy storage box 2. A limiting frame 3 for limiting the modular energy storage elements 1 is connected to the inner wall of the energy storage box 2. An elastic foam pad is bonded to the outer periphery of the limiting frame 3 to protect the modular energy storage elements 1. A box door 4 is rotatably connected to the side of the energy storage box 2.

[0041] Six liquid storage boxes 5 are respectively connected and fixed to the side of the box door 4 and the five side surfaces of the energy storage box 2. The size of the liquid storage box 5 is selected according to actual needs. Insulating oil for heat conduction is arranged in the liquid storage box 5. Two adjacent liquid storage boxes 5 are connected through a plurality of retractable bellows 6. The number and size of the bellows 6 ensure that the opening of the box door 4 is not affected. A protective linear motor 7 with a protective function is installed on the inner wall of the liquid storage box 5. The moving part of the protective linear motor 7 is connected to a scraper 8. A rubber pad 9 for resisting the box door 4 or the energy storage box 2 is bonded to the side of the scraper 8. The protective linear motor 7 drives the scraper 8 to move back and forth, so that the rubber pad 9 scrapes the energy storage box 2 and the box door 4, thereby improving the thoroughness of the flow of the insulating oil;

[0042] The upper liquid storage box 5 is connected to a temporary liquid storage tank 10 through an insulating block. A power pump 11 is installed on both vertical sides of the temporary liquid storage tank 10. The power pump 11 is connected to one of the liquid storage boxes 5 through a first connecting pipe 12, and the power pump 11 is connected to the temporary liquid storage tank 10 through a second connecting pipe 13. The temporary liquid storage tank 10 is connected to another liquid storage box 5 through a connecting auxiliary pipe 14. The inner wall of the temporary liquid storage tank 10 is connected to a semiconductor refrigeration plate 15, and the working part and the heat release part of the semiconductor refrigeration plate 15 are both outside the temporary liquid storage tank 10. When the modular energy storage element 1 is working, the heat generated is heat-conducted with the insulating oil through the energy storage box 2 and the box door 4. The connecting design of the bellows 6 allows the insulating oil to flow when the power pump 11 is turned on, thereby improving the uniformity of the insulating oil. If the heat dissipation effect needs to be improved, the semiconductor refrigeration plate 15 is turned on for cooling and cooling.

[0043] The side of the energy storage box 2 is connected to an insulation box 16 through multiple insulation blocks. The insulation box 16 is connected to the energy storage box 2 through multiple air intake pipes 17 with valves. The energy storage box 2 is connected and fixed to the box door 4 through a lock. The energy storage box 2, the liquid storage box 5 and the box door 4 are all made of heat-conducting materials.

[0044] In order to ventilate and dissipate heat, a plurality of fans 18 are embedded in the bottom end of the heat insulation box 16. Two horizontal linear motors 19 are installed at the bottom end of the heat insulation box 16. The inner wall of the fan 18 is connected to a dust screen. The moving parts of the two horizontal linear motors 19 are connected to a cleaning brush 20 for cleaning the dust screen. The horizontal linear motor 19 drives the cleaning brush 20 to move back and forth, thereby cleaning the dust screen to avoid the dust screen being blocked and affecting the normal operation of the fan 18. The side of the energy storage box 2 away from the air inlet pipe 17 is connected to a plurality of air outlet pipes 21 with valves. The solenoid valves of the air inlet pipe 17 and the air outlet pipe 21 are opened, and the fan 18 blows air to assist air to enter the energy storage box 2 from the air inlet pipe 17 and exhaust from the air outlet pipe 21 to achieve ventilation and heat dissipation.

[0045] In order to extinguish a fire, an electric fire extinguisher 22 is provided in the inner cavity of the energy storage box 2. The electric fire extinguisher 22 is made of heat-resistant material. A plurality of fixing clips 23 for fixing the electric fire extinguisher 22 are connected to the inner top wall of the energy storage box 2. An air box 24 is detachably connected to the inner top wall of the energy storage box 2. The electric fire extinguisher 22 is connected to the air box 24 through a discharge pipe 25 with a solenoid valve. Two of the vertical outer walls of the energy storage box 2 are connected to discharge auxiliary pipes 26, one of which is provided with a solenoid valve on its outer periphery. A discharge sub-pipe 26 passes through the energy storage box 2 and extends to the outside of the energy storage box 2. An air-controlled valve is installed on the outer periphery of the discharge sub-pipe 26. If a fire occurs, the solenoid valves of the discharge pipe 25 and the discharge sub-pipe 26 in the energy storage box 2 are opened, and the electric fire extinguishing material is sprayed out. If the electric fire extinguisher 22 is damaged by high temperature, the air-controlled valve of the discharge sub-pipe 26 outside the energy storage box 2 will be opened, and the fire extinguishing material in the electric fire extinguisher 22 will be discharged to the outside without affecting the modular energy storage element 1.

[0046] In order to fix the wires, a wire placement channel for the wires to pass through is opened on the side of the energy storage box 2. The inner wall of the wire placement channel is connected with a deformable rubber sleeve 27 for wrapping the wires. The outer periphery of the rubber sleeve 27 is connected with multiple rubber clamps 28 for fixing the rubber sleeve 27. The modular energy storage element 1 is placed in the energy storage box 2 and is limited by the limit frame 3. Then the wires are connected and passed through the rubber sleeve 27. Then the rubber clamp 28 is tightened to clamp and fix the rubber sleeve 27 to ensure the stability of the wires.

[0047] A plurality of temperature sensors 29 are installed on the inner wall of the energy storage box 2 , and a plurality of anti-skid pads 30 made of rubber are bonded to the bottom end of the energy storage box 2 .

[0048] The semiconductor refrigeration sheet 15 includes a refrigeration part, a connection part, a display part and a heat release part. The heat release part can be as far away from the temporary liquid storage tank 10 as possible to reduce the impact on the refrigeration part.

[0049] The modular energy storage element 1, the protective linear motor 7, the power pump 11, the semiconductor refrigeration plate 15, the fan 18, the transverse linear motor 19, the electric fire extinguisher 22, the solenoid valve, and the temperature sensor 29 are all set as the prior art. The working principle, size and model are irrelevant to the function of the present application, so they are not described in detail. The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention no longer explains the control method and circuit connection in detail.

[0050] How it works

[0051] The modular energy storage device of the high-voltage power system places the modular energy storage element 1 in the energy storage box 2 and is limited by the limit frame 3, then connects the wires, passes the wires through the rubber sleeve 27, and then tightens the rubber clamp 28 to tighten and fix the rubber sleeve 27 to ensure the stability of the wires;

[0052] When the modular energy storage element 1 is working, the heat generated is transferred to the insulating oil through the energy storage box 2, the box door 4, and the bellows 6. The connecting design allows the insulating oil to flow when the power pump 11 is turned on, thereby improving the uniformity of the insulating oil. The protective linear motor 7 drives the scraper 8 to move back and forth, so that the rubber pad 9 scrapes the energy storage box 2 and the box door 4, thereby improving the thoroughness of the flow of the insulating oil. The solenoid valves of the air inlet pipe 17 and the air outlet pipe 21 are opened, and the fan 18 is used for blowing, so that auxiliary air enters the energy storage box 2 from the air inlet pipe 17 and is discharged from the air outlet pipe 21 to achieve ventilation and heat dissipation. If the heat dissipation effect needs to be improved, the semiconductor refrigeration plate 15 is turned on for cooling and cooling.

[0053] It should be noted that, in this document, relational terms such as one and two are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular energy storage device for a high voltage power system, characterized in that: include: A plurality of modular energy storage elements (1) are used for storing energy in a high-voltage power system, wherein the plurality of modular energy storage elements (1) are arranged in an energy storage box (2), the inner wall of the energy storage box (2) is connected to a limiting frame (3) for limiting the modular energy storage elements (1), and the side of the energy storage box (2) is rotatably connected to a box door (4); Six liquid storage boxes (5) are respectively connected and fixed to the side of the box door (4) and the five side surfaces of the energy storage box (2); insulating oil for heat conduction is arranged in the liquid storage boxes (5); two adjacent liquid storage boxes (5) are connected via a plurality of retractable bellows (6); a protective linear motor (7) with a protective function is installed on the inner wall of the liquid storage box (5); a moving part of the protective linear motor (7) is connected to a scraper (8); and a rubber pad (9) for contacting the box door (4) or the energy storage box (2) is bonded to the side of the scraper (8); The upper liquid storage box (5) is connected to a temporary liquid storage tank (10) via a heat insulation block. A power pump (11) is installed on both vertical side surfaces of the temporary liquid storage tank (10). The power pump (11) is connected to one of the liquid storage boxes (5) via a first connecting pipe (12). The power pump (11) is connected to the temporary liquid storage tank (10) via a second connecting pipe (13). The temporary liquid storage tank (10) is connected to the other liquid storage box (5) via a connecting auxiliary pipe (14). A semiconductor cooling plate (15) is connected to the inner wall of the temporary liquid storage tank (10), and the working part and the heat release part of the semiconductor cooling plate (15) are both located outside the temporary liquid storage tank (10).

2. A modular energy storage device for a high voltage power system according to claim 1, characterized in that: The side of the energy storage box (2) is connected to a heat insulation box (16) via a plurality of heat insulation blocks; the heat insulation box (16) is in communication with the energy storage box (2) via a plurality of air inlet pipes (17) with valves; the energy storage box (2) is connected and fixed to the box door (4) via a lock; and the energy storage box (2), the liquid storage box (5) and the box door (4) are all made of heat conductive material.

3. A modular energy storage device for a high voltage power system according to claim 2, characterized in that: A plurality of fans (18) are embedded in the bottom end of the heat insulation box (16), and two transverse linear motors (19) are installed at the bottom end of the heat insulation box (16).

4. The modular energy storage device of a high voltage power system according to claim 3, characterized in that: The inner wall of the fan (18) is connected to a dustproof net, and the moving parts of the two transverse linear motors (19) are connected to a cleaning brush (20) for cleaning the dustproof net.

5. The modular energy storage device of a high voltage power system according to claim 2, characterized in that: The side of the energy storage box (2) away from the air inlet pipe (17) is connected to a plurality of air outlet pipes (21) with valves.

6. The modular energy storage device of a high voltage power system according to claim 1, characterized in that: An electric fire extinguisher (22) is arranged in the inner cavity of the energy storage box (2), the electric fire extinguisher (22) is made of heat-resistant material, and a plurality of fixing clips (23) for fixing the electric fire extinguisher (22) are connected to the inner top wall of the energy storage box (2).

7. A modular energy storage device for a high voltage power system according to claim 6, characterized in that: An air box (24) is detachably connected to the inner top wall of the energy storage box (2), and the electric fire extinguisher (22) is connected to the air box (24) via a discharge pipe (25) with a solenoid valve.

8. The modular energy storage device of a high voltage power system according to claim 7, characterized in that: Two of the vertical outer walls of the energy storage box (2) are connected to discharge auxiliary pipes (26), one of which is provided with a solenoid valve installed on its outer periphery, and the other discharge auxiliary pipe (26) passes through the energy storage box (2) and extends to the outside of the energy storage box (2), and is provided with a gas-controlled valve installed on its outer periphery.

9. A modular energy storage device for a high voltage power system according to claim 8, characterized in that: A wire placement channel for the wire to pass through is provided on the side of the energy storage box (2); a deformable rubber sleeve (27) for wrapping the wire is connected to the inner wall of the wire placement channel; and a plurality of rubber clamps (28) for fixing the rubber sleeve (27) are connected to the outer periphery of the rubber sleeve (27).

10. A modular energy storage device for a high voltage power system according to claim 9, characterized in that: A plurality of temperature sensors (29) are installed on the inner wall of the energy storage box (2), and a plurality of anti-slip pads (30) made of rubber material are bonded to the bottom end of the energy storage box (2).

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