Safety protection system and method of energy storage power supply

Abstract

The safety protection system comprises a protection box, the inner side wall of the protection box is slidably connected with a rectangular box in a sealed mode, the inner side wall of the rectangular box is fixedly connected with a cylinder, the interior of the cylinder is slidably connected with a piston column in a sealed mode, and the inner wall of the cylinder is fixedly connected with a one-way communicating pipe in a penetrating mode. The inner wall of the bottom of the rectangular box is rotatably connected with a rotating shaft, the side wall of the rotating shaft is fixedly connected with a gear, the inner wall of the top of the rectangular box is slidably connected with a left rack and a right rack, and the inner wall of the bottom of the rectangular box is slidably connected with a front rack and a rear rack; and the rear rack is fixedly connected with the piston column. When the energy storage power supply generates a high-temperature abnormal condition in the using process, liquid carbon dioxide stored in the liquid storage tank can be rapidly sprayed out from the air spraying head to absorb a large amount of heat, fire extinguishing treatment can be conducted on an ignition point, and safety is improved.

Description

Technical Field

[0001] This invention relates to the field of energy storage power safety protection system technology, and in particular to energy storage power safety protection system and method. Background Technology

[0002] In recent years, driven by the significant expansion of new energy power generation in my country and the continuous decline in the cost of lead-acid and lithium batteries, the installed capacity of electrochemical energy storage in China has maintained a high-speed growth trend. With the gradual improvement of battery technology and the continuous reduction in costs, the application space for battery energy storage has opened up, and the energy storage battery market is poised for rapid development with enormous potential.

[0003] Currently, during the installation of energy storage power supplies, the transportation of large quantities of energy storage batteries often results in the energy storage power supplies being squeezed and collided with each other. Due to the lack of a good buffer mechanism, this poses a safety hazard to the appearance quality of the energy storage power supplies. Furthermore, after the energy storage power supplies are installed and put into use, if a short circuit or other situation occurs inside the energy storage power supply, causing abnormal high temperatures, a large amount of heat cannot be dissipated quickly. This can eventually lead to the outer casing of the energy storage power supply bulging, deforming, or even bursting, thereby posing a fire hazard.

[0004] Therefore, we propose a safety protection system and method for energy storage power sources. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a safety protection system and method for energy storage power supply.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A safety protection system for an energy storage power supply includes a protection box. A rectangular box is slidably connected to the inner wall of the protection box. A cylinder is fixedly connected to the inner wall of the rectangular box. A piston is slidably connected inside the cylinder. A one-way connecting pipe is fixedly connected through the inner wall of the cylinder. The other end of the one-way connecting pipe is fixedly connected through the bottom wall of the rectangular box. A rotating shaft is rotatably connected to the inner wall of the bottom of the rectangular box. A gear is fixedly connected to the side wall of the rotating shaft. A left rack and a right rack are slidably connected to the inner wall of the top of the rectangular box. A front rack and a rear rack are slidably connected to the inner wall of the bottom of the rectangular box. The rear rack is fixedly connected to the piston. Four sliding holes are provided on the top wall of the rectangular box.

[0008] The top walls of the left rack, right rack, front rack, and rear rack are all equipped with shock-absorbing mechanisms to buffer the energy storage power supply. The top wall of the protective box is rotatably connected to a cover plate, and the bottom wall of the cover plate is fixedly connected to multiple jet nozzles. The bottom inner wall of the protective box is fixedly connected to a liquid storage tank, which is fixedly connected to the multiple jet nozzles through an air supply pipe. An electronic valve is installed inside the air supply pipe, and the protective box is equipped with a trigger mechanism to open the electronic valve.

[0009] Furthermore, the shock absorption mechanism includes connecting rods fixedly connected to the top walls of the left rack, right rack, front rack, and rear rack. Each connecting rod passes through a corresponding sliding hole and is fixedly connected to a vertical plate. Multiple damping springs are fixedly connected to the side wall of the vertical plate. The other ends of the multiple damping springs are fixedly connected to a clamping plate. Multiple heat dissipation holes are provided on the inner wall of the clamping plate.

[0010] Furthermore, the triggering mechanism includes multiple heat-dissipating aluminum foils fixedly connected to the side wall of the clamping plate, a metal sheet fixedly connected to the top wall of the rectangular box, thermoplastic resin fixedly connected to the inner wall of the sliding hole, and heat-conducting strips fixedly connected to the side walls of the thermoplastic resin. The heat-conducting strips are fixedly connected to adjacent heat-dissipating aluminum foils and metal sheets.

[0011] Furthermore, the inner wall of the protective box is provided with four sliding cavities, and each sliding cavity is sealed and slidably connected to a sliding plate. A push rod is fixedly connected to the side wall of the sliding plate. The end of the push rod away from the sliding plate passes through the inner wall of the sliding cavity and the inner wall of the adjacent vertical plate in sequence, and is then fixedly connected to the side wall of the clamping plate.

[0012] Furthermore, a conductive sheet is fixedly connected to the side wall of the slide plate, and a conductive strip is fixedly connected to the inner wall of the slide cavity. The conductive sheet and the conductive strip are electrically connected through a timer and an electronic valve.

[0013] Furthermore, a one-way air inlet pipe and a one-way air outlet pipe are fixedly connected through the inner wall of the sliding cavity, and multiple air blowing heads are fixedly connected to the inner side wall of the protective box. The other end of the one-way air outlet pipe is fixedly connected to the multiple air blowing heads.

[0014] Furthermore, the left rack and right rack are respectively meshed with gears, and the front rack and rear rack are respectively meshed with gears.

[0015] Furthermore, the protective box has multiple ventilation holes on its side wall, and the liquid storage tank is filled with liquid carbon dioxide.

[0016] The method for using a safety protection system for energy storage power sources includes the following steps:

[0017] S1. Place the energy storage power supply on top of the rectangular box, with the bottom of the energy storage power supply in contact with the metal sheet, while multiple clamping plates clamp and cushion the energy storage power supply from all sides.

[0018] S2. When the energy storage power supply experiences an abnormal high temperature during use, the thermoplastic resin changes from a solid state to a softened state. When the energy storage power supply experiences an abnormal high temperature, the conductive sheet and the conductive strip come into contact with each other, and the electronic valve is opened for a period of time under the action of the timer.

[0019] S3. The liquid carbon dioxide inside the storage tank is rapidly ejected from the jet nozzle, absorbing a large amount of heat, and the energy storage power supply can extinguish the fire at the ignition point.

[0020] The present invention has the following advantages:

[0021] 1. Place the energy storage power supply on top of the rectangular box. Under the action of the energy storage power supply's own weight, the clamping plate abuts against the side wall of the energy storage power supply and, under the action of the damping spring, when the energy storage power supply encounters a collision during transportation, it will play a protective role under the buffering action of multiple damping springs.

[0022] 2. During the above process, when the clamping plate performs shock absorption and buffering, the clamping plate will also drive the sliding plate to slide back and forth in the sealed cavity through the push rod, thereby intermittently squeezing the gas inside the cavity to the air blowing head and blowing away the dust on the accessories of the energy storage power supply terminal, thereby improving the safety of the energy storage power supply during use.

[0023] 3. When the energy storage power supply experiences abnormal high temperatures during use, the conductive sheet and conductive strip come into contact with each other. Under the action of the timer, the electronic valve is opened for a period of time, and the liquid carbon dioxide stored inside the storage tank will be rapidly sprayed out from the nozzle. The liquid carbon dioxide will absorb a large amount of heat as it changes from liquid to gas, and it can also extinguish the fire at the ignition point, thus improving the safety performance of the energy storage power supply under abnormal high temperatures. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the internal structure of the protection box in the safety protection system of the energy storage power supply proposed in this invention;

[0025] Figure 2 This is a schematic diagram showing the connection relationship of the vertical plate, damping spring, thermoplastic resin, and clamping plate in the safety protection system of the energy storage power supply proposed in this invention.

[0026] Figure 3 This is a schematic diagram of the safety protection system for the energy storage power supply proposed in this invention;

[0027] Figure 4 This is a schematic diagram showing the positional relationship of structures such as heat dissipation holes and heat dissipation aluminum foil in the safety protection system of the energy storage power proposed in this invention.

[0028] Figure 5This is a schematic diagram of the external appearance of the safety protection system for the energy storage power supply proposed in this invention;

[0029] Figure 6 This is a schematic diagram showing the positional relationship of multiple racks and gears in the safety protection system of the energy storage power supply proposed in this invention.

[0030] In the diagram: 1. Protective box, 2. Rectangular box, 3. Rotating shaft, 4. One-way connecting pipe, 5. Cylinder, 6. Piston column, 7. Rear rack, 8. Front rack, 9. Right rack, 10. Left rack, 11. Sliding hole, 12. Connecting rod, 13. Vertical plate, 14. Damping spring, 15. Clamping plate, 16. Heat dissipation aluminum foil, 17. Metal sheet, 18. Thermoplastic resin, 19. Heat conduction strip, 20. Sliding cavity, 21. Slide plate, 22. One-way air outlet pipe, 23. Air blower, 24. Conductive sheet, 25. Conductive strip, 26. Liquid storage tank, 27. Air supply pipe, 28. Electronic valve, 29. Heat dissipation hole, 30. One-way air inlet pipe, 31. Cover plate, 32. Jet nozzle, 33. Ventilation hole, 34. Gear, 35. Push rod. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Reference Figures 1-6 The safety protection system of the energy storage power supply includes a protection box 1. A rectangular box 2 is slidably connected to the inner wall of the protection box 1. A cylinder 5 is fixedly connected to the inner wall of the rectangular box 2. A piston column 6 is slidably connected inside the cylinder 5. A one-way connecting pipe 4 is fixedly connected through the inner wall of the cylinder 5. The one-way connecting pipe 4 only allows the mineral oil inside the protection box 1 to be squeezed into the cylinder 5. The other end of the one-way connecting pipe 4 is fixedly connected through the bottom wall of the rectangular box 2. A rotating shaft 3 is rotatably connected to the inner wall of the bottom of the rectangular box 2. A gear 34 is fixedly connected to the side wall of the rotating shaft 3. A left rack 10 and a right rack 9 are slidably connected to the inner wall of the top of the rectangular box 2. A front rack 8 and a rear rack 7 are slidably connected to the inner wall of the bottom of the rectangular box 2. The front rack 8 and the rear rack 7 are offset from the left rack 10 and the right rack 9. The rear rack 7 is fixedly connected to the piston column 6. Four sliding holes 11 are opened on the top wall of the rectangular box 2. The inside of the protection box 1 is filled with mineral oil.

[0033] The top walls of the left rack 10, right rack 9, front rack 8 and rear rack 7 are all equipped with shock-absorbing mechanisms to buffer the energy storage power supply. The top wall of the protective box 1 is rotatably connected to a cover plate 31. Multiple jet nozzles 32 are fixedly connected to the bottom wall of the cover plate 31. A liquid storage tank 26 is fixedly connected to the bottom inner wall of the protective box 1. The liquid storage tank 26 is fixedly connected to the multiple jet nozzles 32 through an air supply pipe 27. An electronic valve 28 is installed inside the air supply pipe 27. The protective box 1 is equipped with a trigger mechanism to open the electronic valve 28.

[0034] The damping mechanism includes connecting rods 12 that are fixedly connected to the top walls of the left rack 10, right rack 9, front rack 8 and rear rack 7 respectively. Each connecting rod 12 passes through the corresponding sliding hole 11 and is fixedly connected to a vertical plate 13. Multiple damping springs 14 are fixedly connected to the side wall of the vertical plate 13. The other ends of the multiple damping springs 14 are fixedly connected to a clamping plate 15. Multiple heat dissipation holes 29 are opened on the inner wall of the clamping plate 15. The heat dissipation holes 29 are rectangular slots.

[0035] The triggering mechanism includes multiple heat dissipation aluminum foils 16 fixedly connected to the side wall of the clamping plate 15, a metal sheet 17 fixedly connected to the top wall of the rectangular box 2, thermoplastic resin 18 fixedly connected to the inner wall of the sliding hole 11, and heat conduction strips 19 fixedly connected to the side walls of the thermoplastic resin 18. The heat conduction strips 19 are made of metal and can be twisted and deformed. The heat conduction strips 19 are fixedly connected to the adjacent heat dissipation aluminum foils 16 and metal sheets 17. The heat conduction strips 19 have a cross-shaped structure.

[0036] The inner wall of the protective box 1 has four sliding cavities 20. Each sliding cavity 20 is sealed and slidably connected to a slide plate 21. A push rod 35 is fixedly connected to the side wall of the slide plate 21. The end of the push rod 35 away from the slide plate 21 passes through the inner wall of the sliding cavity 20 and the inner wall of the adjacent vertical plate 13 in sequence, and is then fixedly connected to the side wall of the clamping plate 15.

[0037] A conductive sheet 24 is fixedly connected to the side wall of the slide plate 21, and a conductive strip 25 is fixedly connected to the inner wall of the slide cavity 20. The conductive sheet 24 and the conductive strip 25 are electrically connected through a timer and an electronic valve 28.

[0038] A one-way air inlet pipe 30 and a one-way air outlet pipe 22 are fixedly connected through the inner wall of the sliding cavity 20. The one-way air inlet pipe 30 only allows external gas to be drawn into the sliding cavity 20, while the one-way air outlet pipe 22 only allows the gas inside the sliding cavity 20 to be squeezed out by the air blowing head 23. Multiple air blowing heads 23 are fixedly connected to the inner wall of the protective box 1, and the other end of the one-way air outlet pipe 22 is fixedly connected to the multiple air blowing heads 23.

[0039] Left rack 10 and right rack 9 are respectively meshed with gear 34, and front rack 8 and rear rack 7 are respectively meshed with gear 34.

[0040] The protective box 1 has multiple ventilation holes 33 on its side wall, and the liquid storage tank 26 is filled with liquid carbon dioxide.

[0041] The method for using a safety protection system for energy storage power sources includes the following steps:

[0042] S1. Place the energy storage power supply on top of the rectangular box 2, with the bottom of the energy storage power supply in contact with the metal sheet 17, while multiple clamping plates 15 clamp the energy storage power supply from all sides.

[0043] S2. When the energy storage power supply experiences an abnormal high temperature during use, the thermoplastic resin 18 changes from a solid state to a softened state. When the energy storage power supply experiences an abnormal high temperature, the conductive sheet 24 and the conductive strip 25 come into contact with each other, and the electronic valve 28 is opened for a period of time under the action of the timer.

[0044] S3. The liquid carbon dioxide inside the storage tank 26 is rapidly ejected from the jet nozzle 32, absorbing a large amount of heat and extinguishing the fire at the ignition point.

[0045] In this invention, the energy storage power supply is placed on top of the rectangular box 2, with its bottom in contact with the metal sheet 17. Due to the power supply's weight, it will cause the rectangular box 2 to slide vertically downwards for a distance. The protective box 1 is filled with mineral oil, which is then squeezed into the cylinder 5 through the one-way connecting pipe 4. The mineral oil then pushes the piston column 6 to slide vertically for a distance. During this sliding process, the piston column 6 pushes the rear rack 7, which is fixedly connected to it, to slide vertically for a distance. The rear rack 7 is meshed with the gear 34, causing the gear 34 to rotate at a certain angle. Since the front rack 8, left rack 10, and right rack 9 are all meshed with the gear 34, when the gear 34 rotates, the front rack 8, left rack 10, and right rack 9 will also move vertically for a distance. Each rack will then move the vertical plate 13 towards the energy storage power supply via the connecting rod 12.

[0046] When all four connecting rods 12 drive the vertical plates 13 fixedly connected to them to move, each vertical plate 13 will drive the clamping plate 15 to move a certain distance through multiple damping springs 14 fixedly connected to its side wall, so that the clamping plate 15 abuts against the side wall of the energy storage power supply and clamps it. Under the action of the damping springs 14, when the energy storage power supply encounters a collision during transportation, it will be protected by the buffering effect of multiple damping springs 14. When the clamping plate 15 is performing shock absorption and buffering, the clamping plate 15 will also drive the sliding plate 21 to slide back and forth in the sliding cavity 20 through the push rod 35. When the clamping plate 15 and the thermoplastic resin 18 abut against each other, it is the end of the stroke, and then intermittently squeezes the gas inside the sliding cavity 20 to the blowing head 23 and sprays it out, blowing away the dust on the terminal accessories of the energy storage power supply and improving the safety of the energy storage power supply during use.

[0047] The heat generated by the energy storage power supply will be dissipated through the ventilation holes 33. However, when the energy storage power supply experiences abnormally high temperatures during use, since the energy storage power supply is in contact with the heat dissipation aluminum foil 16 on all sides and the bottom of the energy storage power supply is in contact with the metal sheet 17, the heat dissipation aluminum foil 16 and the metal sheet 17 will transfer this heat to the thermoplastic resin 18 through the heat conduction strip 19. Thermoplastic resin 18 has the properties of softening when heated and hardening when cooled, and it does not undergo chemical reactions. No matter how many times heating and cooling are repeated, it can maintain this property. As the temperature of the heat conduction strip 19 continues to rise, the thermoplastic resin 18 will change from a solid state to a softened state, and thus the thermoplastic resin 18 will not affect the position of the clamping plate 15. When the energy storage power supply experiences abnormal high temperature, causing the outer casing to bulge, crack, or explode and catch fire, the deformation of the power supply's appearance will cause the corresponding clamping plate 15 to shift a certain distance, thereby causing the corresponding conductive sheet 24 and conductive strip 25 to come into contact. Under the action of the timer, the electronic valve 28 will be opened for a period of time. After the electronic valve 28 is opened, the liquid carbon dioxide stored inside the liquid storage tank 26 will be rapidly sprayed out from the jet nozzle 32. On the one hand, the liquid carbon dioxide will absorb a large amount of heat when it changes from liquid to gas. On the other hand, the sprayed carbon dioxide can extinguish the fire at the ignition point of the energy storage power supply, improving the safety performance of the energy storage power supply under abnormal high temperature conditions.

[0048] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A safety protection system for an energy storage power source, comprising a protection box (1), characterized in that, The inner wall of the protective box (1) is sealed and slidably connected to a rectangular box (2). The inner wall of the rectangular box (2) is fixedly connected to a cylinder (5). The cylinder (5) is sealed and slidably connected to a piston column (6). The inner wall of the cylinder (5) is fixedly connected to a one-way connecting pipe (4). The other end of the one-way connecting pipe (4) is fixedly connected to the bottom wall of the rectangular box (2). The bottom inner wall of the rectangular box (2) is rotatably connected to a rotating shaft (3). The side wall of the rotating shaft (3) is fixedly connected to a gear (34). The top inner wall of the rectangular box (2) is slidably connected to a left rack (10) and a right rack (9). The bottom inner wall of the rectangular box (2) is slidably connected to a front rack (8) and a rear rack (7). The rear rack (7) is fixedly connected to the piston column (6). The top wall of the rectangular box (2) has four sliding holes (11). The top walls of the left rack (10), right rack (9), front rack (8) and rear rack (7) are all provided with shock-absorbing mechanisms to buffer the energy storage power supply. The top wall of the protective box (1) is rotatably connected to a cover plate (31). The bottom wall of the cover plate (31) is fixedly connected to multiple jet nozzles (32). The bottom inner wall of the protective box (1) is fixedly connected to a liquid storage tank (26). The liquid storage tank (26) is fixedly connected to multiple jet nozzles (32) through an air supply pipe (27). An electronic valve (28) is installed inside the air supply pipe (27). The protective box (1) is provided with a triggering mechanism to open the electronic valve (28).

2. The safety protection system for energy storage power supply according to claim 1, characterized in that, The shock absorption mechanism includes connecting rods (12) fixedly connected to the top walls of the left rack (10), right rack (9), front rack (8) and rear rack (7). Each connecting rod (12) passes through a corresponding sliding hole (11) and is fixedly connected to a vertical plate (13). Multiple damping springs (14) are fixedly connected to the side wall of the vertical plate (13). The other ends of the multiple damping springs (14) are fixedly connected to a clamping plate (15). Multiple heat dissipation holes (29) are opened on the inner wall of the clamping plate (15).

3. The safety protection system for energy storage power supply according to claim 2, characterized in that, The triggering mechanism includes multiple heat dissipation aluminum foils (16) fixedly connected to the side wall of the clamping plate (15), a metal sheet (17) fixedly connected to the top wall of the rectangular box (2), a thermoplastic resin (18) fixedly connected to the inner wall of the sliding hole (11), and a heat-conducting strip (19) fixedly connected to the side wall of the thermoplastic resin (18). The heat-conducting strip (19) is fixedly connected to the adjacent heat dissipation aluminum foils (16) and metal sheets (17).

4. The safety protection system for energy storage power supply according to claim 3, characterized in that, The inner wall of the protective box (1) is provided with four sliding cavities (20). Each sliding cavity (20) is sealed and slidably connected to a sliding plate (21). A push rod (35) is fixedly connected to the side wall of the sliding plate (21). The end of the push rod (35) away from the sliding plate (21) passes through the inner wall of the sliding cavity (20) and the inner wall of the adjacent vertical plate (13) in sequence, and is then fixedly connected to the side wall of the clamping plate (15).

5. The safety protection system for energy storage power supply according to claim 4, characterized in that, A conductive sheet (24) is fixedly connected to the side wall of the slide plate (21), and a conductive strip (25) is fixedly connected to the inner wall of the slide cavity (20). The conductive sheet (24) and the conductive strip (25) are electrically connected through a timer and an electronic valve (28).

6. The safety protection system for energy storage power supply according to claim 5, characterized in that, The inner wall of the sliding cavity (20) is fixedly connected to a one-way air inlet pipe (30) and a one-way air outlet pipe (22). The inner wall of the protective box (1) is fixedly connected to multiple air blowing heads (23). The other end of the one-way air outlet pipe (22) is fixedly connected to the multiple air blowing heads (23).

7. The safety protection system for energy storage power supply according to claim 1, characterized in that, The left rack (10) and right rack (9) are respectively meshed with the gear (34), and the front rack (8) and rear rack (7) are respectively meshed with the gear (34).

8. The safety protection system for energy storage power supply according to claim 7, characterized in that, The protective box (1) has multiple ventilation holes (33) on its side wall, and the liquid storage tank (26) is filled with liquid carbon dioxide.

9. A method for using the safety protection system of the energy storage power supply as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Place the energy storage power supply on top of the rectangular box (2), with the bottom of the energy storage power supply in contact with the metal sheet (17), and multiple clamping plates (15) clamping and buffering the energy storage power supply from all sides. S2. When the energy storage power supply is in use and a high temperature abnormality occurs, the thermoplastic resin (18) changes from solid to soft state. When the energy storage power supply is in a high temperature abnormality, the conductive sheet (24) and the conductive strip (25) come into contact with each other, and the electronic valve (28) is opened for a period of time under the action of the timer. S3. The liquid carbon dioxide inside the storage tank (26) is rapidly ejected from the jet nozzle (32), absorbing a large amount of heat, and the energy storage power supply can extinguish the fire at the ignition point.

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