A fast-charging energy storage device

Abstract

The present invention discloses a fast-charging energy storage device, wherein the interior of the box is hollow and in the shape of a vertical column. The box is composed of a base, a shell and a top plate from bottom to top. The base, the shell and the top plate are all made of flame-retardant material. A plurality of movable seats are placed on the top of the base, and the movable seats can move horizontally along the top of the base. A vertical frame is fixed to the top of each movable seat, and a battery pack is placed in the frame. When the present invention is fast-charging, by manually pushing down the top plate, the large spur gear and the small spur gear can be rotated by using the guide rod, the drive groove and the sleeve, so that the shell and the frame can be diffused and moved, thereby increasing the gaps between the shells, between the shells and the frames, and between the frames, that is, increasing the ventilation space, so that the rotation of the electric fan can be used to achieve a good ventilation and heat dissipation effect, thereby improving the stability of fast charging.

Description

Technical Field

[0001] The present invention relates to an energy storage device, in particular to a fast-charging energy storage device. Background Art

[0002] An electric energy storage device is a device that can store electric energy and charge and discharge it when needed. During the charging process, existing electric energy storage devices can be divided into fast charging and slow charging according to the different charging speed requirements. Compared with slow charging, fast charging usually causes the battery pack to generate more heat during operation, so it is necessary to be equipped with a corresponding heat dissipation device. Among heat dissipation devices, air-cooled heat dissipation devices occupy less space than water-cooled heat dissipation devices, are less expensive, and are also safer. However, to ensure the effectiveness of air cooling, a certain amount of ventilation space must be reserved for the circulation of hot and cold air. The ventilation space of existing energy storage devices is often fixed, which makes the volume of the energy storage device always remain large. This does not meet the requirement for a small size in the non-charging state (for example, the battery pack of an electric bicycle is expected to be as small as possible when normally discharging, which can indirectly save the volume of the frame, reduce the overall weight of the vehicle, and improve the endurance. When charging, it is expected to be able to charge quickly, quickly restore the range, and facilitate riding). In addition, when a malfunction occurs, the existing energy storage device has a strong ignition effect on surrounding objects, which is not conducive to fire safety, highlighting the shortcomings of the existing technology. Summary of the Invention

[0003] The object of the present invention is to provide a fast-charging energy storage device to solve the above-mentioned technical problems.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A fast-charging energy storage device comprises a box body, a base, a shell, a top plate, a movable seat, a frame, a battery pack, a support plate, a controller, a charging and discharging socket, a driving mechanism, a heat dissipation device, and a fire extinguishing device. The box body is hollow inside and is in the shape of a vertical column. The box body is composed of a base, a shell and a top plate from bottom to top. The base, shell and top plate are all made of flame-retardant material. A plurality of movable seats are placed on the top of the base. The movable seats can move horizontally along the top of the base. A vertical frame is fixed to the top of each movable seat. A battery pack is placed in the frame. The number of the shells is the same as the number of the frames and is greater than or equal to three. The shells are arranged at equal angles to each other. A horizontal support plate is fixed in the middle of the inner wall of each shell. Each support plate is horizontally slidably connected to the frame. The top of the top plate A controller is fixed at the end, and the controller is electrically connected to each battery pack through surplus cables. The controller is electrically equipped with a charging and discharging socket. A driving mechanism is installed between the top plate and the base. The top plate can drive the frame and the shell to perform horizontal diffusion movement and horizontal convergence movement through the driving mechanism under manual operation. When the frame and the shell are driven by the driving mechanism to perform horizontal diffusion movement, the gaps between the shells, between the shells and the frame, and between the frames will increase. When the frame and the shell are driven by the driving mechanism to perform horizontal convergence movement, the gaps between the shells, between the shells and the frame, and between the frames will decrease. The driving mechanism includes a heat dissipation device and a fire extinguishing device. The heat dissipation device can perform ventilation and heat dissipation, and the fire extinguishing device can be automatically triggered to release the fire extinguishing agent.

[0006] Based on the above technical solution, a groove is provided at the bottom end of the base in the left and right directions, a flexible lifting strap is fixed to the groove, a handle is fixed on the left and right parts of the lifting strap, and an inward-concave buckle groove is provided on the left and right parts of the controller.

[0007] On the basis of the above technical solution, the top of the base is provided with multiple groups of guide grooves and multiple horizontal limit grooves. The number of groups of guide grooves and the number of limit grooves are the same as the number of movable seats. The guide grooves in each group are arranged at equal angles to each other in a circle. The two guide grooves form a group. The two guide grooves in each group of guide grooves are horizontal and parallel to each other. The bottom of the movable seat is rotatably connected with multiple balls. Each movable seat corresponds to each group of guide grooves and each limit groove up and down, and each ball rolls and rubs with the guide groove respectively. A vertical limit rod is fixed to the bottom end of each base, and each limit rod is gap-plugged with each limit groove.

[0008] The gear train is a gear that is fixed on the upper end of the gear train, and the gear train is a gear that is fixed on the upper end of the gear train, and the gear train is a gear that is fixed on the lower end of the gear train. The upper and lower ends of the cylindrical gear are coaxially fixed with limiting rings, and the upper part of the inner wall of each shell is respectively fixed with a horizontal tooth plate, and each tooth plate is respectively meshed with a large spur cylindrical gear, and each tooth plate is respectively located between the two limiting rings, and the bottom end of the limiting ring at the top of the large spur cylindrical gear is in contact with the top of at least one of the tooth plates, and the top end of the limiting ring at the bottom end of the large spur cylindrical gear is in contact with at least the bottom end of one of the tooth plates, and the circumferential part of the sleeve is penetrated by a spiral driving groove, and the driving groove is slidably connected to the guide rod, and a small spur cylindrical gear is coaxially fixed to the sleeve, and a horizontal rack is fixed on the upper part of each frame, and each rack is respectively meshed with a small spur cylindrical gear, and the large spur cylindrical gear and the small spur cylindrical gear are respectively penetrated by ventilation grooves.

[0009] On the basis of the above technical solution, the fire extinguishing device includes a heat-conducting cylinder, an upper support cylinder, a sealing piston, a limiting hole, a spring pin, a discharge port, and an automatic dry powder fire extinguisher. The top of the lower support cylinder is coaxially fixed with a vertical heat-conducting cylinder, and the top of the heat-conducting cylinder is coaxially fixed with a vertical upper support cylinder. The lower support cylinder, the heat-conducting cylinder and the upper support cylinder are all made of metal. The upper support cylinder is sealed and slidably connected with a vertical sealing piston. The sealing piston is fixed to the bottom end of the upper polishing rod. The side wall of the sealing piston is provided with a horizontal limiting hole. The upper part of the upper support cylinder is equipped with a horizontal spring pin, and the spring pin can be plugged into the limiting hole. The upper part of the upper support cylinder passes through There are multiple horizontal discharge ports, and the sealing piston can block and close the discharge ports. When the sealing piston blocks and closes the discharge ports, the spring pin is not plugged into the limiting hole. When the limiting pin is plugged into the limiting hole, the sealing piston cannot block and close the discharge ports. An automatic dry powder fire extinguisher is placed in the heat-conducting cylinder, and carbon dioxide gas is stored in the enclosed space between the heat-conducting cylinder, the upper support cylinder and the sealing piston. The automatic dry powder fire extinguisher is sealed with dry powder and compressed carbon dioxide gas. After the automatic dry powder fire extinguisher is heated to a certain temperature, it can automatically explode and release the dry powder and compressed carbon dioxide gas wrapped therein to fill the external space.

[0010] Based on the above technical solution, the heat dissipation device is an electric fan, which is fixed to the bottom of the support frame and is electrically connected to the controller.

[0011] On the basis of the above technical solution, when the top plate moves up and down under the action of external force, the driving groove and the guide rod can make the sleeve rotate forward and backward. When the sleeve rotates forward and backward, the large spur gear and the gear plate can make the shell move in an eccentric direction relative to the sleeve to diffuse and converge. When the sleeve rotates forward and backward, the small spur gear and the rack can make the frame move in an eccentric direction relative to the sleeve to diffuse and converge. The direction of the diffusion and convergence movement of the frame is consistent with the extension direction of the guide groove below it, and the direction of the diffusion and convergence movement of the shell forms an acute angle with the direction of the diffusion and convergence movement of the frame.

[0012] Compared with the prior art, the present invention has the following advantages: when performing fast charging, the present invention can manually push down the top plate, and utilize the guide rod, drive groove and sleeve to rotate the large spur gear and the small spur gear, so that the shell and the frame can be diffused and moved, thereby increasing the gaps between the shells, between the shells and the frames, and between the frames, that is, the ventilation space is increased, so that good ventilation and heat dissipation effects can be achieved by utilizing the rotation of the electric fan, thereby improving the stability of fast charging, and in the non-fast charging state, the frame and the shell can be brought together to reduce the ventilation space and meet the requirement for a small volume.

[0013] By providing a fire extinguishing device, the fire extinguishing agent can be released when the battery pack fails and burns, and the sealing piston and the upper support cylinder can be moved away from each other so that the fire extinguishing agent can be discharged from the discharge port, thereby covering the battery pack to a certain extent and reducing the ignition effect on surrounding unburned objects. The sealing piston and the upper support cylinder can be moved away from each other and the box body can be closed and sealed, thereby reducing the circulation of air inside and outside the box body, reducing the ignition effect on objects around the device, and improving fire safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axial side structure of the present invention.

[0015] Figure 2 Schematic diagram of the cooperation between the support plate and the frame of the present invention.

[0016] Figure 3 It is a schematic diagram of the cooperation between the movable seat and the base of the present invention.

[0017] Figure 4 It is a schematic diagram of the bottom structure of the movable seat of the present invention.

[0018] Figure 5It is a schematic diagram of the back structure of the sealing piston, sleeve and upper support cylinder of the present invention.

[0019] Figure 6 Schematic diagram of the matching between the sleeve and the guide rod of the present invention.

[0020] Figure 7 It is a front cross-sectional structural schematic diagram of the upper support tube, heat-conducting tube and lower support tube of the present invention.

[0021] Figure 8 It is a top view schematic diagram of the shell and frame of the present invention when they are dispersed and moved.

[0022] Figure 9 It is a top view schematic diagram of the frame of the present invention when it is dispersed and moved.

[0023] In the figure: 1, box body, 2, base, 3, shell, 4, top plate, 5, mobile seat, 6, frame, 7, battery pack, 8, support plate, 9, controller, 10, charging and discharging socket, 11, driving mechanism, 12, fire extinguishing device, 13, groove, 14, pull belt, 15, handle, 16, buckle groove, 17, guide groove, 18, limit groove, 19, ball bearing, 20, limit rod, 21, support frame, 22, lower light rod, 2 3. Lower support cylinder, 24. Upper polishing rod, 25. Guide rod, 26. Sleeve, 27. Large spur gear, 28. Limiting ring, 29. Tooth plate, 30. Drive groove, 31. Small spur gear, 32. Rack, 33. Ventilation groove, 34. Heat transfer cylinder, 35. Upper support cylinder, 36. Sealing piston, 37. Limiting hole, 38. Spring pin, 39. Discharge port, 40. Automatic dry powder fire extinguisher, 41. Electric fan. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1-9As shown, a fast-charging energy storage device includes a box body 1, a base 2, a shell 3, a top plate 4, a movable seat 5, a frame 6, a battery pack 7, a support plate 8, a controller 9, a charge and discharge socket 10, a drive mechanism 11, a heat dissipation device, and a fire extinguishing device 12. The box body 1 is hollow inside and is in the shape of a vertical column. The box body 1 is composed of a base 2, a shell 3 and a top plate 4 from bottom to top. The base 2, the shell 3 and the top plate 4 are all made of flame-retardant material. A plurality of movable seats 5 are placed on the top of the base 2. The movable seats 5 can be moved along The top of the base 2 is moved horizontally, and a vertical frame 6 is fixed to the top of each mobile seat 5. A battery pack 7 is placed in the frame 6. The number of the shells 3 and the number of the frames 6 are both four. The shells 3 are arranged at equal angles to each other. A horizontal support plate 8 is fixed to the middle of the inner wall of each shell 3. Each support plate 8 is horizontally slidably connected to the frame 6, thereby facilitating the horizontal movement of the shell 3. A controller 9 is fixed to the top of the top plate 4. The controller 9 is a known prior art, such as Single chip microcomputer, the controller 9 is electrically connected to each battery pack 7 through surplus cables, so that the frame 6 can still maintain the electrical connection between the battery pack 7 and the controller 9 when performing diffusion and gathering movements, the controller 9 is electrically installed with a charging and discharging socket 10, and a driving mechanism 11 is jointly installed between the top plate 4 and the base 2. The top plate 4 can drive the frame 6 and the shell 3 to perform horizontal diffusion movement and horizontal gathering movement through the driving mechanism 11 under manual operation. When the frame 6 and the shell 3 are driven by the driving mechanism 11 to perform horizontal diffusion movement, the gaps between the shells 3 and 3, between the shell 3 and the frame 6, and between the frame 6 and the frame 6 will increase. When the frame 6 and the shell 3 are driven by the driving mechanism 11 to perform horizontal gathering movement, the gaps between the shells 3 and 3, between the shell 3 and the frame 6, and between the frame 6 and the frame 6 will decrease. The driving mechanism 11 includes a heat dissipation device and a fire extinguishing device 12. The heat dissipation device can ventilate and dissipate heat, and the fire extinguishing device 12 can be automatically triggered to release the fire extinguishing agent.

[0026] The bottom end of the base 2 is provided with a groove 13 in the left and right directions, and a flexible lifting belt 14 is fixed to the groove 13. A handle 15 is fixed to the left and right parts of the lifting belt 14, so that the device can be moved by using the handle 15 and the lifting belt 14. The left and right parts of the controller 9 are provided with a concave buckle groove 16, so that the hand can be buckled with the buckle groove 16 to indirectly push and pull the top plate 4.

[0027] The top of the base 2 is provided with multiple groups of guide grooves 17 and multiple horizontal limit grooves 18. The number of groups of guide grooves 17 and the number of limit grooves 18 are the same as the number of movable seats 5. Each group of guide grooves 17 is arranged at equal angles to each other in a circle. Two guide grooves 17 form a group. The two guide grooves 17 in each group of guide grooves 17 are horizontally parallel to each other. A plurality of balls 19 are rotatably connected to the bottom of the movable seat 5. Each movable seat 5 corresponds to each group of guide grooves 17 and each limit groove 18 up and down, and each ball 19 rolls with the guide groove 17 respectively, thereby reducing the resistance of the movable seat 5 and the frame 6 during movement. A vertical limit rod 20 is fixed to the bottom end of each base 2, and each limit rod 20 is respectively inserted into each limit groove 18 with a gap, so that the limit groove 18 is used to limit the moving range of the limit rod 20, and then indirectly limit the moving range of the movable seat 5 to prevent the movable seat 5 from separating from the base 2.

[0028] The driving mechanism 11 includes a support frame 21, a lower polished rod 22, a lower support tube 23, an upper polished rod 24, a guide rod 25, a sleeve 26, a large spur gear 27, a limit ring 28, a tooth plate 29, a drive groove 30, a small spur gear 31, a rack 32, and a ventilation groove 33. A vertical support frame 21 is fixed to the middle of the base 2, a vertical lower polished rod 22 is fixed to the top of the support frame 21, and the lower polished rod 22 is connected to the vertical lower support tube 23 by sliding up and down. The fire extinguishing device 12 is installed in the lower support tube 23 top, the fire extinguishing device 12 is also equipped with a vertical upper polishing rod 24 on the top, the upper polishing rod 24 is fixed to the bottom of the top plate 4, the upper polishing rod 24 is radially fixed with a horizontal guide rod 25, the upper polishing rod 24 is inserted with a vertical sleeve 26 in the gap, the sleeve 26 can rotate and slide axially compared to the upper polishing rod 24, the upper part of the sleeve 26 is coaxially fixed with a large spur gear 27, the upper and lower ends of the large spur gear 27 are coaxially fixed with a limiting ring 28, and the upper inner wall of each of the shells 3 is respectively A horizontal tooth plate 29 is fixed, each of which is meshed with a large spur gear 27. Each of the tooth plates 29 is located between two limiting rings 28. The bottom end of the limiting ring 28 at the top of the large spur gear 27 is in contact with the top of at least one of the tooth plates 29. The top end of the limiting ring 28 at the bottom of the large spur gear 27 is in contact with the bottom end of at least one of the tooth plates 29, thereby ensuring the height stability of the large spur gear 27 and indirectly improving the large spur gear 27 and the tooth plate 29. To ensure the stability of meshing, a spiral driving groove 30 is passed through the circumference of the sleeve 26, and the driving groove 30 is slidably connected to the guide rod 25. A small spur gear 31 is coaxially fixed to the sleeve 26, and a horizontal rack 32 is fixed to the upper part of each frame 6. Each rack 32 is respectively meshed with each small spur gear 31, and the large spur gear 27 and the small spur gear 31 are respectively passed through by ventilation grooves 33 on the upper and lower parts. The ventilation grooves 33 facilitate the circulation of air and achieve good heat dissipation effect.

[0029] The fire extinguishing device 12 includes a heat-conducting cylinder 34, an upper support cylinder 35, a sealing piston 36, a limiting hole 37, a spring pin 38, an exhaust port 39, and an automatic dry powder fire extinguisher 40. The top of the lower support cylinder 23 is coaxially fixed with a vertical heat-conducting cylinder 34, and the top of the heat-conducting cylinder 34 is coaxially fixed and connected with a vertical upper support cylinder 35. The lower support cylinder 23, the heat-conducting cylinder 34 and the upper support cylinder 35 are all made of metal, which is convenient for heat conduction. The upper support cylinder 35 is sealed and slidably connected with a vertical sealing piston 36, which is fixed to the bottom end of the upper light rod 24. The side wall of the sealing piston 36 is provided with a horizontal limiting hole 37. A horizontal spring pin 38 is installed on the upper part of the upper support cylinder 35, and the spring pin 38 can be plugged into the limiting hole 37. The upper part of the upper support cylinder 35 is penetrated by a plurality of horizontal exhaust ports. Outlet 39, the sealing piston 36 can block and close the discharge outlet 39. When the sealing piston 36 blocks and closes the discharge outlet 39, the spring pin 38 is not plugged into the limiting hole 37. When the limiting pin is plugged into the limiting hole 37, the sealing piston 36 cannot block and close the discharge outlet 39. An automatic dry powder fire extinguisher 40 is placed in the heat-conducting tube 34. Carbon dioxide gas is stored in the enclosed space between the heat-conducting tube 34, the upper support tube 35 and the sealing piston 36. The automatic dry powder fire extinguisher 40 is sealed with dry powder and compressed carbon dioxide gas. After the automatic dry powder fire extinguisher 40 is heated to a certain temperature, it can automatically explode and release the dry powder and compressed carbon dioxide gas wrapped therein to fill the external space. The automatic dry powder fire extinguisher 40 is a known prior art, such as an automatic dry powder fire extinguishing ball.

[0030] The heat dissipation device is an electric fan 41 , which is fixed to the bottom of the support frame 21 and is electrically connected to the controller 9 .

[0031] When the top plate 4 moves up and down under the action of external force, the driving groove 30 and the guide rod 25 can make the sleeve 26 rotate forward and backward. When the sleeve 26 rotates forward and backward, the large spur gear 27 and the tooth plate 29 can make the shell 3 diffuse and converge in the eccentric direction compared with the sleeve 26. When the sleeve 26 rotates forward and backward, the small spur gear 31 and the rack 32 can make the frame 6 diffuse and converge in the eccentric direction compared with the sleeve 26. The direction of the diffusion and convergence movement of the frame 6 is consistent with the extension direction of the guide groove 17 below it, and the direction of the diffusion and convergence movement of the shell 3 is at an acute angle to the direction of the diffusion and convergence movement of the frame 6.

[0032] The working principle of the present invention is as follows: when in use, the battery pack 7 is charged and discharged through the charge and discharge socket 10. When discharging and slow charging are performed, the box body 1 is in a closed state, and the gaps between the shells 3 and 3, between the shells 3 and the frame 6, and between the frames 6 and 6 are very small, making the volume of the device smaller. Since the battery pack 7 generates less heat at this time, the electric fan 41 does not rotate.

[0033] When fast charging is required, the top plate 4 is pressed downwards. At this time, the upper polishing rod 24 moves downwards compared to the sleeve 26, and the lower support cylinder 23 will slide downwards along the lower polishing rod 22. The sealing piston 36 is blocked by the automatic dry powder fire extinguisher 40 and is almost stationary compared to the heat conducting cylinder 34. When the upper polishing rod 24 moves downwards, the sleeve 26 can be rotated forward through the guide rod 25 and the drive groove 30, thereby causing the large spur gear 27 and the small spur gear 31 to rotate forward, and then the tooth plate 29 and the rack 32 can be diffused and moved, thereby utilizing the gear The plate 29 enables each shell 3 to diffusely move relative to the sleeve 26, thereby utilizing the rack 32 to diffusely move the frame 6, that is, it can increase the gaps between the shells 3 and 3, between the shells 3 and the frame 6, and between the frames 6 and 6. Then the controller 9 will control the electric fan 41 to rotate, so that it can draw air to circulate in these gaps, thereby improving the heat dissipation effect. When it is necessary to release the fast charging effect, the shells 3 can be manually gathered and squeezed to restore the box body 1 to its closed state, and the frame 6 can be gathered and moved to reset.

[0034] During the fast charging process, when the battery pack 7 burns due to a malfunction, high temperature will be generated, which can be conducted to the lower support tube 23, the heat-conducting tube 34 and the upper support tube 35, and then the carbon dioxide sealed between the heat-conducting tube 34, the upper support tube 35 and the sealing piston 36 will expand due to the heat, thereby pushing the sealing piston 36 to slide upward along the upper support tube 35, and the automatic dry powder fire extinguisher 40 will explode due to heat, thereby releasing the compressed carbon dioxide therein, and then the sealing piston 36 will slide up along the upper support tube 35 until the limiting hole 37 is plugged into the spring pin 38. At this time, the dry powder will be discharged from the upper support tube 35 under the high pressure of the compressed carbon dioxide gas. The air is discharged from the outlet 39, thereby covering the battery pack 7 to a certain extent and reducing the ignition effect on the surrounding unburned objects. When the sealing piston 36 slides up along the upper support cylinder 35 until the limiting hole 37 is plugged into the spring pin 38, the sleeve 26 can be reversed with the cooperation of the driving groove 30 and the guide rod 25, so that the large spur gear 27, the tooth plate 29, the small spur gear 31 and the rack 32 are used to respectively move the shell 3 and the frame 6 together, and finally close the box body 1. At this time, the box body 1 is in a closed state, which reduces the circulation of air inside and outside, and can reduce the ignition effect on objects around the device, thereby improving fire safety.

[0035] During slow charging, when the battery pack 7 burns due to a malfunction, high temperature will be generated, which can be conducted to the lower support tube 23, the heat-conducting tube 34 and the upper support tube 35, and then the air sealed between the heat-conducting tube 34, the upper support tube 35 and the sealing piston 36 can be heated and expanded, thereby pushing the upper support tube 35 and the heat-conducting tube 34 to slide downward along the sealing piston 36, and can cause the automatic dry powder fire extinguisher 40 to explode due to heat, thereby releasing the compressed carbon dioxide gas therein, and then can jointly cause the sealing piston 36 to slide up along the upper support tube 35 until the limit hole 37 is plugged into the spring pin 38. At this time, the dry powder will be discharged from the exhaust port 39 under the high pressure of the compressed carbon dioxide gas, and can also cover the battery pack 7 to a certain extent, reducing the ignition effect on surrounding unburned objects.

[0036] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, based on the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A fast-charging energy storage device, comprising a box (1), a base (2), a shell (3), a top plate (4), a movable seat (5), a frame (6), a battery pack (7), a support plate (8), a controller (9), a charge and discharge socket (10), a drive mechanism (11), a heat dissipation device, and a fire extinguishing device (12), characterized in that: The box (1) is hollow inside and has a vertical columnar shape. The box (1) is composed of a base (2), a shell (3) and a top plate (4) from bottom to top. The base (2), shell (3) and top plate (4) are all made of flame-retardant material. A plurality of movable seats (5) are placed on the top of the base (2). The movable seats (5) can move horizontally along the top of the base (2). A vertical frame (6) is fixed on the top of each movable seat (5). A battery pack (7) is placed in the frame (6). The number of the shells (3) is the same as the number of the frames (6) and is greater than or equal to three. The shells (3) are arranged at equal angles to each other. A horizontal support plate (8) is fixed in the middle of the inner wall of each shell (3). Each support plate (8) is horizontally slidably connected to the frame (6). A controller (9) is fixed on the top of the top plate (4). The controller (9) is electrically connected to each battery pack (7) through a surplus cable. The controller (9) A charging and discharging socket (10) is electrically installed, and a driving mechanism (11) is installed between the top plate (4) and the base (2). The top plate (4) can drive the frame (6) and the shell (3) to perform horizontal diffusion movement and horizontal gathering movement through the driving mechanism (11) under human operation. When the frame (6) and the shell (3) are driven by the driving mechanism (11) to perform horizontal diffusion movement, the gaps between the shells (3) and the shells (3), between the shells (3) and the frame (6), and between the frames (6) and the frames (6) will increase. When the frame (6) and the shell (3) are driven by the driving mechanism (11) to perform horizontal gathering movement, the gaps between the shells (3) and the shells (3), between the shells (3) and the frame (6), and between the frames (6) and the frames (6) will decrease. The driving mechanism (11) includes a heat dissipation device and a fire extinguishing device (12). The heat dissipation device can perform ventilation and heat dissipation, and the fire extinguishing device (12) can be automatically triggered to release the fire extinguishing agent.

2. A fast-charging energy storage device according to claim 1, characterized in that: The bottom end of the base (2) is provided with a groove (13) in the left and right directions, and a flexible lifting belt (14) is fixed on the groove (13), and a handle (15) is fixed on the left and right parts of the lifting belt (14), and the left and right parts of the controller (9) are provided with a concave buckle groove (16).

3. A fast-charging energy storage device according to claim 1, characterized in that: The top of the base (2) is provided with a plurality of groups of guide grooves (17) and a plurality of horizontal limit grooves (18). The number of groups of guide grooves (17) and the number of limit grooves (18) are the same as the number of the movable seat (5). Each group of guide grooves (17) is arranged at equal angles to each other in a circle. Two guide grooves (17) form a group. The two guide grooves (17) in each group of guide grooves (17) are horizontally parallel to each other. The bottom of the movable seat (5) is rotatably connected with a plurality of balls (19). Each movable seat (5) corresponds to each group of guide grooves (17) and each limit groove (18) in an upper and lower position. Each ball (19) rolls and rubs with the guide groove (17). A vertical limit rod (20) is fixed to the bottom of each base (2). Each limit rod (20) is respectively plugged into each limit groove (18) with a gap.

4. A fast-charging energy storage device according to claim 1, characterized in that: The driving mechanism (11) comprises a support frame (21), a lower polishing rod (22), a lower support cylinder (23), an upper polishing rod (24), a guide rod (25), a sleeve (26), a large spur gear (27), a limit ring (28), a tooth plate (29), a driving groove (30), a small spur gear (31), a rack (32), and a ventilation groove (33). A vertical support frame (21) is fixed to the middle of the base (2), a vertical lower polishing rod (22) is fixed to the top of the support frame (21), and the lower polishing rod (22) is slidably connected to the upper and lower parts of the support frame (21). A vertical lower support tube (23), the fire extinguishing device (12) is installed on the top of the lower support tube (23), a vertical upper polishing rod (24) is also installed on the upper part of the fire extinguishing device (12), the upper polishing rod (24) is fixed to the bottom end of the top plate (4), a horizontal guide rod (25) is radially fixed to the upper polishing rod (24), a vertical sleeve (26) is inserted in the gap of the upper polishing rod (24), the sleeve (26) can rotate and slide axially compared to the upper polishing rod (24), and a large spur gear (26) is coaxially fixed on the upper part of the sleeve (26). 7), the upper and lower ends of the large spur gear (27) are coaxially fixed with a limiting ring (28), and the upper part of the inner wall of each housing (3) is fixed with a horizontal tooth plate (29), each tooth plate (29) is respectively engaged with the large spur gear (27), and each tooth plate (29) is respectively located between the two limiting rings (28), and the bottom end of the limiting ring (28) at the top of the large spur gear (27) is in contact with the top of at least one of the tooth plates (29), and the top end of the limiting ring (28) at the bottom end of the large spur gear (27) is at least The sleeve (26) is in contact with the bottom end of one of the tooth plates (29), and a spiral driving groove (30) is passed through the circumference of the sleeve (26). The driving groove (30) is slidably connected to the guide rod (25). A small spur gear (31) is coaxially fixed to the sleeve (26). A horizontal rack (32) is fixed to the upper part of each frame (6), and each rack (32) is respectively engaged with each small spur gear (31). The large spur gear (27) and the small spur gear (31) are respectively passed through by ventilation grooves (33) at the top and bottom.

5. A fast-charging energy storage device according to claim 4, characterized in that: The fire extinguishing device (12) includes a heat-conducting tube (34), an upper support tube (35), a sealing piston (36), a limiting hole (37), a spring pin (38), an exhaust port (39), and an automatic dry powder fire extinguisher (40). The top of the lower support tube (23) is coaxially fixed with a vertical heat-conducting tube (34). The top of the heat-conducting tube (34) is coaxially fixed with a vertical upper support tube (35). The lower support tube (23), the heat-conducting tube (34) and the upper support tube (35) are all made of metal. The upper support tube (35) is sealed and slidably connected to a vertical sealing piston (36). The sealing piston (36) is fixed to the bottom end of the upper polishing rod (24). A horizontal limiting hole (37) is opened on the side wall of the sealing piston (36). A horizontal spring pin (38) is installed on the upper part of the upper support tube (35). The spring pin (38) can be plugged into the limiting hole (37). The upper portion of the upper support tube (35) is penetrated by a plurality of horizontal discharge ports (39), and the sealing piston (36) can block and seal the discharge ports (39). When the sealing piston (36) blocks and seals the discharge ports (39), the spring pin (38) is not plugged into the limiting hole (37). When the limiting pin is plugged into the limiting hole (37), the sealing piston (36) cannot block and seal the discharge ports (39). An automatic dry powder fire extinguisher (40) is placed in the heat-conducting tube (34). Carbon dioxide gas is stored in the enclosed space between the heat-conducting tube (34), the upper support tube (35) and the sealing piston (36). The automatic dry powder fire extinguisher (40) is sealed with dry powder and compressed carbon dioxide gas. When the automatic dry powder fire extinguisher (40) is heated to a certain temperature, it can automatically explode and release the dry powder and compressed carbon dioxide gas enclosed therein to fill the external space.

6. A fast-charging energy storage device according to claim 5, characterized in that: The heat dissipation device is an electric fan (41), which is fixed to the bottom of the support frame (21) and is electrically connected to the controller (9).

7. A fast-charging energy storage device according to claim 6, characterized in that: When the top plate (4) moves up and down under the action of an external force, the driving groove (30) and the guide rod (25) can cause the sleeve (26) to rotate forward and backward. When the sleeve (26) rotates forward and backward, the large spur gear (27) and the tooth plate (29) can cause the shell (3) to diffuse and converge in an eccentric direction relative to the sleeve (26). When the sleeve (26) rotates forward and backward, the small spur gear (31) and the rack (32) can cause the frame (6) to diffuse and converge in an eccentric direction relative to the sleeve (26). The direction of the diffusion and convergence movement of the frame (6) is consistent with the extension direction of the guide groove (17) below it. The direction of the diffusion and convergence movement of the shell (3) forms an acute angle with the direction of the diffusion and convergence movement of the frame (6).

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