A liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure

Abstract

The present invention belongs to the technical field of photovoltaic energy storage, and in particular to a liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure. Aiming at the problem of insufficient heat dissipation efficiency caused by tube-type liquid cooling in the prior art, the following solutions are proposed. It includes a box barrel, a bottom support plate and a top cover plate that are combined into a rectangular parallelepiped box structure. The box barrel is a vertical square tube structure, and the bottom support plate and the top cover plate are parallel to each other and seal the upper and lower ends of the box barrel. Multiple columns of equally spaced battery packs are fixed on the upper surface of the bottom support plate. Each column of the battery packs includes six storage batteries arranged in an array on the same plane. The present invention can absorb heat closely from the heat-generating storage batteries during use. With the continuously circulating cooling water inside, it can quickly absorb heat and take away the heat to ensure that heat accumulation will not occur. At the same time, the water-absorbing mesh cloth on the surface of the storage battery can adsorb the excess water droplets generated on the surface of the U-shaped flat water bag to avoid the formation of water droplet aggregation.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic energy storage, and in particular to a liquid-cooled heat dissipation photovoltaic energy storage battery pack packaging structure. Background Art

[0002] The heat dissipation design of the packaging structure of photovoltaic battery groups (solar panels) is very important, because high temperature will affect the efficiency and life of photovoltaic cells; photovoltaic cells will generate heat when working, especially under strong light; reasonable heat dissipation design can effectively reduce the battery temperature, thereby improving the efficiency and reliability of the photovoltaic system. In the use of photovoltaic energy storage batteries, excessive charging and discharging rates of energy storage batteries, excessively high ambient temperatures, and excessive charging and discharging operations will cause the temperature of the energy storage batteries to rise. Excessive temperature will accelerate the chemical reaction of the energy storage battery, resulting in increased battery loss, reduced capacity, shortened life, and may even cause serious problems such as short circuits and leakage.

[0003] After searching, it is found that the heat dissipation of battery packs in the prior art mostly adopts air cooling, but the heat dissipation effect is limited, especially in high temperature environment, it may not be able to effectively cool down; in some high-power photovoltaic systems, liquid cooling technology has also been introduced. The liquid cooling system takes away the heat generated by the photovoltaic battery pack through circulating liquid, and the cooling effect is very significant; however, the liquid cooling heat dissipation in the prior art only uses cooling pipes attached to the surface of the battery, and the effect is very weak, so we propose a more efficient liquid cooling heat dissipation mechanism. Summary of the invention

[0004] In view of the technical problem that the heat dissipation efficiency of the tubular liquid cooling in the prior art is not high enough, the present invention adopts the following technical solution:

[0005] A liquid-cooled and heat-dissipating photovoltaic energy storage battery pack packaging structure comprises a box barrel, a bottom support plate and a top cover plate which are combined into a rectangular box structure, wherein the box barrel is a vertical square tube structure, the bottom support plate and the top cover plate are parallel to each other and seal the upper and lower ends of the box barrel; a plurality of rows of battery packs with equal spacing are fixed on the upper surface of the bottom support plate, each row of the battery packs comprises six storage batteries distributed in an array on the same plane, and a U-shaped flat water bag is arranged between two adjacent battery packs, the two sides of the U-shaped flat water bag are in contact with the side surfaces of all storage batteries in the two connected rows of battery packs at the same time, and the U-shaped flat water bag is filled with circulating cooling water; a water-absorbing mesh is pasted on one side of the storage battery close to the U-shaped flat water bag.

[0006] A further configuration is that a rectangular hole one and a rectangular hole two are respectively opened on the front and rear sides of the box barrel; the front of the cabinet door is hinged in the rectangular hole one, and an exhaust fan and an observation window are respectively arranged in the middle of the front of the cabinet door; the back of the cabinet door is hinged in the rectangular hole two; the surface of the back of the cabinet door is provided with air holes; the plane where the U-shaped flat water bag is located is perpendicular to the plane where the front of the cabinet door is located.

[0007] Further settings are as follows. The battery pack includes a plurality of crossbeam support plates that are horizontally placed and parallel to each other. Anti-slip convex rails that are parallel to each other are provided at the edges near the two long sides of the upper surfaces of all the crossbeam support plates. A same vertical column is inserted between the middles of all the crossbeam support plates. A jack with the same cross-sectional shape as the vertical column is pre-opened on the crossbeam support plate, and then fixed by welding at the junction. A battery clip is fixedly clamped to the lower surface of each storage battery. The whole battery clip is in the shape of a U-shaped support plate with an upward opening. The battery clip is fixed to the surface of the storage battery by screws in cooperation with a 3M adhesive tape. A first sliding groove that forms a sliding fit with the anti-slip convex rail is opened on the lower surface of the battery clip. Buffer springs are fixed at the same height on the opposite sides of the vertical column, and the extending directions of the buffer springs are opposite to the storage batteries on the anti-slip convex rail. A magnet is fixed at one end of the buffer spring away from the vertical column, and an iron block that is adsorbed to the corresponding magnet is provided at one end of the top of the battery clip close to the magnet. The wiring terminals of the storage batteries at both ends of the same crossbeam support plate face the front of the cabinet door and the back of the cabinet door respectively. This not only makes the wiring operation convenient after installation, and only needs to open the front and back cabinet doors to carry out installation and maintenance, but also the wiring terminals of the storage batteries are located at the most open ends in the front and back of the device, and are not easily affected by the excess water droplets that may condense. Even if a small amount of water droplets are generated, they will be evaporated in the shortest time.

[0008] Further settings are as follows. The wiring sequence of the storage batteries in the same battery pack is: first, the storage batteries on the same side of the vertical column are connected in series from top to bottom, and finally the remaining positive and negative electrodes of the two storage batteries at the bottom are electrically connected. Such connection can ensure that the gaps between adjacent two battery packs are completely vacated, so as to facilitate the installation and heat dissipation of other devices, and quick isolation in special cases.

[0009] Further settings are as follows. The whole U-shaped flat water bag is in a U-shaped structure with an upward opening, and two vertical communicating pipes are respectively reserved at the top of the U-shaped flat water bag. Two through holes are respectively opened on the side of the box barrel near the top. A cooling water outlet pipe and a cold water inlet pipe are respectively inserted into the two through holes. The cold water inlet pipe is communicated with the tops of all the communicating pipes at the back row, and the cooling water outlet pipe is communicated with the tops of all the communicating pipes at the front row. The ends of the cooling water outlet pipe and the cold water inlet pipe away from the box barrel are provided with the same water cooling device. This can enable one water cooling device to drive multiple groups of this device for cooling at the same time, and different models of water cooling devices can be selected according to the total scale of the battery assembly.

[0010] Further settings are as follows. The tops of all the vertical columns are fixed with the same channel-shaped connecting plate rib with an upward opening, and both ends of the channel-shaped connecting plate rib are fixed to the inner walls near the top on the left and right sides of the box barrel by bolts. This improves the stability of the battery pack.

[0011] Further, there is a ventilation and heat dissipation mechanism provided between two adjacent battery packs. The ventilation and heat dissipation mechanism includes blowing pick rods that are parallel to each other and clamped on both sides of the U-shaped flat water bag. The two blowing pick rods are at different heights, which can ensure that the internal water channels are unobstructed and can flow normally. On the side of the two blowing pick rods away from the clamped U-shaped flat water bag, vertical sections are opened, and the vertical sections face the side of the storage battery; a plurality of blowing holes communicating with the inside of the blowing pick rods are opened on the vertical sections; at one end of the two blowing pick rods close to the first rectangular hole, they are connected to the same inclined three-way pipe, and connecting pipes one are inserted at the inlet pipes of the inclined three-way pipe; at the ends of all the connecting pipes one away from the inclined three-way pipe, the same horizontal air distribution pipe is fixed, and an air delivery hose is inserted at the end of the air distribution pipe; a blowing mechanism is fixed on the upper surface of the top cover plate near the front, and the blowing mechanism includes a barrel fixed on the upper surface of the top cover plate; a piston plate is hermetically slidably connected to the inner circumferential wall of the barrel, and two one-way air outlet valves and one-way air inlet valves that extend vertically into the box barrel are arranged at the bottom of the barrel. The other end of the air delivery hose is connected to the air outlet end of the one-way air outlet valve; the blowing pick rods are located between the U-shaped flat water bag and the water absorption mesh cloth. A plurality of ball grooves are opened on the side of the blowing pick rod away from the vertical section, and balls are embedded in the ball grooves.

[0012] Further, two coaxial shaft rod frames are fixed near the middle of the top end of the top cover plate, and a transmission rod is rotatably connected between the two shaft rod frames. Large winding pulleys are fixed at both ends of the transmission rod. A movable shaft is inserted near the circumference on the side of the large winding pulley closer to the front, and a first connecting rod is rotatably sleeved on the movable shaft. The other end of the first connecting rod is hinged in the middle of the piston plate; a reduction motor is fixed on the upper surface of the top cover plate near the middle, and a runner is fixed at the top end of the output shaft of the reduction motor. A second connecting rod is hinged near the circumference on the side of the runner away from the reduction motor; a rubbing small gear is key-connected to the middle of the transmission rod; and bearing frames that are symmetric to each other are respectively fixed on both sides of the rubbing small gear on the upper surface of the top cover plate. Coaxial sliding bearings are fixed at the top ends of the two bearing frames. The same anti-twist rack top rod is slidably connected between the two sliding bearings. The anti-twist rack top rod meshes with the rubbing small gear; and the other end of the second connecting rod is hinged at the end of the anti-twist rack top rod; it can provide a power source for the blowing mechanism. As long as the large winding pulley rotates, it can drive the blowing mechanism to operate, and then blow the air flow in the box barrel to the surface of the water absorption mesh cloth again to accelerate heat absorption.

[0013] A further setting is that reciprocating traction mechanisms are provided on both sides of the U-shaped flat water bag to slowly move all the blowing and picking rods up and down reciprocally, so as to blow and absorb heat from the sides of the storage batteries at different positions. The reciprocating traction mechanism includes traction ropes wound around the circumferential outer walls of two large winding rope wheels. The winding directions of the two traction ropes are the same. Both ends of all the blowing and picking rods are fixed with two parallel and symmetric mountain-shaped connecting plate seats, and suspension rope fixing protrusions for fixing the traction ropes are reserved in the middle of the two mountain-shaped connecting plate seats. Among them, the sub-air ducts are fixed on the surfaces of the front mountain-shaped connecting plate seats, and a plurality of air outlet holes for inserting the first connecting pipes are formed on the upper surfaces of the sub-air ducts. At both ends close to the lower surfaces of the mountain-shaped connecting plate seats, return springs are fixed, and the bottom ends of the return springs are fixed on the upper surface of the bottom support plate. It can dissipate heat from different positions of the storage battery at regular intervals during heat dissipation.

[0014] A further setting is that vertical sliding insertion holes with parallel hole center lines are formed at both ends close to the upper surfaces of the mountain-shaped connecting plate seats, and guiding sliding rods are slidably inserted into the sliding insertion holes. The bottom ends of the two guiding sliding rods at the same end of the blowing and picking rod are fixed with the same connecting plate strip, ensuring that the blowing and picking rod can move horizontally up and down.

[0015] The beneficial effects in the present invention are as follows:

[0016] 1. By providing a U-shaped flat water bag that contacts the storage batteries on both sides simultaneously, the heat-generating storage battery can be closely absorbed during use. With the continuously circulating cooling water inside, heat can be quickly absorbed and taken away, ensuring that heat accumulation will not occur. At the same time, the water-absorbing mesh cloth on the surface of the storage battery can adsorb the excess water droplets generated on the surface of the U-shaped flat water bag, avoiding the formation of water droplet accumulation.

[0017] 2. By arranging the storage batteries distributed in an array and adjacent to each other, and cooperating with the gaps therebetween, the air circulation can be accelerated by the exhaust fan during the cooling process, and the excess water droplets on the surface of the blank part of the U-shaped flat water bag can be evaporated in time to form heat absorption again, so as to improve the overall heat absorption effect inside.

[0018] 3. By providing the ventilation and heat dissipation mechanism, when absorbing heat from the surface of the storage battery, the U-shaped flat water bag and the water-absorbing mesh cloth attached together can be separated for ventilation at regular intervals, which can not only accelerate the evaporation and heat absorption of the excess moisture, but also prevent the heat accumulation caused by the obstruction of the local water circulation. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a liquid-cooled heat dissipation type photovoltaic energy storage battery pack encapsulation structure proposed by the present invention;

[0020] Figure 2This is a schematic diagram of a three-dimensional structure when viewed from above of a liquid-cooled photovoltaic energy storage battery pack packaging structure proposed by the present invention with the cabinet door removed;

[0021] Figure 3 This is a schematic diagram of the overall structure of a liquid-cooled photovoltaic energy storage battery pack packaging structure proposed by the present invention without the box barrel;

[0022] Figure 4 This is a schematic diagram of the structure of a box barrel in a liquid-cooled heat dissipation photovoltaic energy storage battery pack packaging structure proposed by the present invention;

[0023] Figure 5 A schematic diagram of the three-dimensional structure of a battery pack of a unit in a liquid-cooled and heat-dissipating photovoltaic energy storage battery pack packaging structure proposed by the present invention;

[0024] Figure 6 This is a side view of a liquid-cooled photovoltaic energy storage battery pack packaging structure proposed by the present invention with the box barrel removed;

[0025] Figure 7 This is a schematic diagram of the overall structure of a ventilation and heat dissipation mechanism of a liquid-cooled photovoltaic energy storage battery pack packaging structure proposed by the present invention;

[0026] Figure 8 This is a schematic diagram of the overall structure of a reciprocating traction mechanism in a liquid-cooled heat dissipation photovoltaic energy storage battery pack packaging structure proposed by the present invention;

[0027] Figure 9 It is a front view of a reciprocating traction mechanism in a liquid-cooled heat dissipation photovoltaic energy storage battery pack packaging structure proposed by the present invention;

[0028] Figure 10 A liquid-cooled photovoltaic energy storage battery pack packaging structure proposed by the present invention Figure 9 Schematic diagram of the cross-sectional structure along line BB.

[0029] In the figure: 1. Box barrel; 101. First rectangular hole; 102. Through hole; 2. Cooling water outlet pipe; 3. Cold water inlet pipe; 4. Runner; 5. Towing rope; 6. Large rope reel; 7. Reducing motor; 8. Bearing bracket; 9. Anti-twist rack ejector rod; 10. Transmission rod; 11. Shaft rod bracket; 12. Top cover plate; 13. Blowing mechanism; 131. Barrel body; 132. One-way air outlet valve; 14. Reset tension spring; 15. Guide slide bar; 1501. Connecting plate strip; 16. In front of the cabinet door; 17. Exhaust fan; 18. Battery pack; 181. Vertical column; 182. Cross beam support plate; 183. Battery card; 184. Storage battery; 185. Buffer spring; 186. Magnet; 187. Water absorption mesh cloth; 188. Groove-shaped connecting plate rib; 19. U-shaped flat water bag; 20. Bottom support plate; 21. Air distribution pipe; 2101. Air outlet jack; 22. Air delivery hose; 23. Blowing pick rod; 2301. Vertical section; 2302. Blowing hole; 24. Oblique three-way pipe; 25. Mountain-shaped connecting plate seat; 2501. Hanging rope fixing convex; 2502. Slide jack; 26. First connecting pipe. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] In this embodiment, referring to Figures 1 - 10 , a liquid-cooled heat-dissipating photovoltaic energy storage battery pack packaging structure includes a box barrel 1, a bottom support plate 20 and a top cover plate 12 that are combined into a cuboid box structure. The box barrel 1 is a vertical square tubular structure, and the bottom support plate 20 and the top cover plate 12 are parallel to each other and seal the upper and lower ends of the box barrel 1. Multiple columns of equally spaced battery packs 18 are fixed on the upper surface of the bottom support plate 20. Each column of battery packs 18 includes six storage batteries 184 arranged in an array on the same plane. And a U-shaped flat water bag 19 is arranged between adjacent two battery packs 18. Both sides of the U-shaped flat water bag 19 are in contact with the sides of all the storage batteries 184 in the two adjacent columns of battery packs 18 connected thereto, and the U-shaped flat water bag 19 is filled with circulating cooling water. A water absorption mesh cloth 187 is pasted on one side of the storage battery 184 close to the U-shaped flat water bag 19. By providing the U-shaped flat water bag 19 that is in contact with the storage batteries 184 on both sides at the same time, the heat-generating storage batteries 184 can be closely absorbed during use. With the continuously circulating cooling water inside, heat can be quickly absorbed and taken away at the same time to ensure that heat accumulation will not occur. At the same time, the water absorption mesh cloth 187 on the surface of the storage battery 184 can adsorb the excess water droplets generated on the surface of the U-shaped flat water bag 19 to avoid the formation of water droplet accumulation.

[0032] Referring to Figures 1 - 2 , Figure 4, rectangular hole one 101 and rectangular hole two are respectively opened on the front and rear sides of the box barrel 1; a front cabinet door 16 is hinged in rectangular hole one 101, and an air extraction fan 17 and an observation window are respectively arranged in the middle of the front cabinet door 16; a rear cabinet door is hinged in rectangular hole two; air holes are arranged on the surface of the rear cabinet door; the plane where the U-shaped flat water bag 19 is located is perpendicular to the plane where the front cabinet door 16 is located. By arranging two adjacent storage batteries 184 in an array distribution and the gaps therebetween, the air circulation can be accelerated through the air extraction fan 17 during the cooling process, and the excess water droplets on the surface of the blank part of the U-shaped flat water bag 19 can be evaporated in time to form heat absorption again, so as to improve the comprehensive heat absorption effect on the interior.

[0033] Refer to Figure 5 , the battery pack 18 includes a plurality of horizontally placed and parallel crossbeam support plates 182, and anti-slip convex rails parallel to each other are arranged on the upper surfaces of all the crossbeam support plates 182 near the edges of the two long sides; the same vertical column 181 is inserted between the middles of all the crossbeam support plates 182; jacks with the same cross-sectional shape as the vertical column 181 are pre-opened on the crossbeam support plates 182, and then welded and fixed at the joints; a battery card 183 is clamped and fixed on the lower surface of each storage battery 184. The battery card 183 is integrally in the shape of a U-shaped support plate with an upward opening. The battery card 183 is fixed to the surface of the storage battery 184 through screws and 3M adhesive tapes; a first sliding groove for sliding cooperation with the anti-slip convex rail is opened on the lower surface of the battery card 183; buffer springs 185 are fixed at the same height on the opposite sides of the vertical column 181, and the extending direction of the buffer springs 185 is directly opposite to the storage battery 184 on the anti-slip convex rail; a magnet 186 is fixed at one end of the buffer spring 185 away from the vertical column 181, and an iron block adsorbed to the corresponding magnet 186 is arranged at one end of the top of the battery card 183 close to the magnet 186; the connection terminals of the storage batteries 184 at both ends of the same crossbeam support plate 182 face the front cabinet door 16 and the rear cabinet door respectively; through the battery pack 18 arranged in this way, not only can the wiring operation after installation be made convenient, and installation and maintenance can be carried out only by opening the front and rear cabinet doors, but also the connection terminals of the storage batteries 184 are located at the most open ends in the front and rear of the device and are not easily affected by the excess water droplets that may condense. Even if a small amount of water droplets are generated, they will be evaporated in the shortest time.

[0034] Refer to Figures 3 - 4 , the wiring sequence of the storage batteries 184 in the same battery pack 18 is: first, the storage batteries 184 on the same side of the vertical column 181 are connected in series from top to bottom, and finally the remaining positive and negative polarities of the two storage batteries 184 at the bottom are electrically connected; such connection can ensure that the gaps between two adjacent battery packs 18 are completely empty, so as to facilitate the installation and heat dissipation of other equipment and quick isolation in special cases.

[0035] Refer to Figure 1 、Figure 4 , Figure 8 , the overall shape of the U-shaped flat water bag 19 is a U-shaped structure with an upward opening, and two vertical connecting pipes are respectively reserved at the top ends of the U-shaped flat water bag 19. Two through holes 102 are respectively opened on the side of the box barrel 1 near the top end. A cooling water outlet pipe 2 and a cold water inlet pipe 3 are respectively inserted into the two through holes 102. The cold water inlet pipe 3 is connected to the top ends of all the connecting pipes at the back row, and the cooling water outlet pipe 2 is connected to the top ends of all the connecting pipes at the front row. One end of the cooling water outlet pipe 2 and the cold water inlet pipe 3 away from the box barrel 1 is provided with the same water cooling device. By separately externally arranging the water cooling device, one water cooling device can drive multiple groups of this device for cooling at the same time, and different models of water cooling devices can be selected according to the total scale of the battery assembly.

[0036] Refer to Figure 6 , the top ends of all the vertical columns 181 are fixed with the same channel-shaped connecting plate rib 188 with an upward opening, and both ends of the channel-shaped connecting plate rib 188 are fixed on the inner walls of the left and right sides of the box barrel 1 near the top end through bolts, which improves the stability of the battery pack 18.

[0037] Refer to Figure 1 , Figures 7 - 8, a ventilation and heat dissipation mechanism is also provided between two adjacent battery packs 18. The ventilation and heat dissipation mechanism includes blowing and picking rods 23 that are parallel to each other and clamped on both sides of the U-shaped flat water bag 19. The two blowing and picking rods 23 are at different heights, which can ensure that the internal water channels are unobstructed and can flow normally. On the side of the two blowing and picking rods 23 away from the clamped U-shaped flat water bag 19, vertical sections 2301 are opened, and the vertical sections 2301 face the side of the storage battery 184; a plurality of blowing holes 2302 that communicate with the inside of the blowing and picking rods 23 are opened on the vertical sections 2301; at one end of the two blowing and picking rods 23 close to the rectangular hole one 101, the same inclined three-way pipe 24 is connected, and a connecting pipe one 26 is inserted at the inlet pipe of the inclined three-way pipe 24; at the end of all the connecting pipes one 26 away from the inclined three-way pipe 24, the same horizontal air distribution pipe 21 is fixed, and an air delivery hose 22 is inserted at the end of the air distribution pipe 21; a blowing mechanism 13 is fixed on the upper surface of the top cover plate 12 close to the front, and the blowing mechanism 13 includes a barrel body 131 fixed on the upper surface of the top cover plate 12; a piston plate is hermetically slidably connected to the circumferential inner wall of the barrel body 131, and two one-way air outlet valves 132 and one-way air inlet valves that extend vertically into the box barrel 1 are arranged at the bottom of the barrel body 131; the other end of the air delivery hose 22 is connected to the air outlet end of the one-way air outlet valve 132; the blowing and picking rods 23 are located between the U-shaped flat water bag 19 and the water absorption mesh cloth 187, and a plurality of ball grooves are opened on the side of the blowing and picking rods 23 away from the vertical section 2301, and balls are embedded in the ball grooves; by providing the ventilation and heat dissipation mechanism, when absorbing heat from the surface of the storage battery 184, the U-shaped flat water bag 19 and the water absorption mesh cloth 187 that are attached together can be separated and ventilated regularly, which can not only accelerate the evaporation and heat absorption of excess moisture, but also prevent the accumulation of heat caused by the obstruction of local water circulation.

[0038] Refer to Figure 1 , Figure 3 , Figure 6, two coaxial shaft rod holders 11 are fixed near the middle of the top end of the top cover plate 12, and the same transmission rod 10 is rotatably connected between the two shaft rod holders 11. Large winding drums 6 are fixed at both ends of the transmission rod 10. An activity shaft is inserted near the circumferential edge of the side surface of the large winding drum 6 closer to the front, and a first connecting rod is rotatably sleeved on the activity shaft. The other end of the first connecting rod is hinged in the middle of the piston plate; a reduction motor 7 is fixed near the middle of the upper surface of the top cover plate 12, and a runner 4 is fixed at the top end of the output shaft of the reduction motor 7. A second connecting rod is hinged near the circumferential edge of the side of the runner 4 away from the reduction motor 7; a rubbing pinion is key-connected to the middle of the transmission rod 10; and bearing brackets 8 that are symmetric to each other are respectively fixed on both sides of the rubbing pinion on the upper surface of the top cover plate 12. A coaxial sliding bearing is fixed at the top ends of the two bearing brackets 8, and the same anti-twist rack top rod 9 is slidably connected between the two sliding bearings. The anti-twist rack top rod 9 meshes with the rubbing pinion; and the other end of the second connecting rod is hinged to the end of the anti-twist rack top rod 9. By setting like this, a power source can be provided for the air blowing mechanism 13. As long as the large winding drum 6 rotates, the air blowing mechanism 13 can be driven to operate, and then the air flow in the box barrel 1 can be blown to the surface of the water absorption mesh cloth 187 again to accelerate heat absorption.

[0039] Refer to Figures 7 - 9 , reciprocating traction mechanisms are arranged on both sides of the U-shaped flat water bag 19 to realize slow reciprocating up and down movement of all the blowing pick rods 23, so as to blow and absorb heat from the sides of the storage batteries 184 at different positions. The reciprocating traction mechanism includes traction ropes 5 wound around the circumferential outer walls of the two large winding drums 6. The winding directions of the two traction ropes 5 are the same, and two parallel and symmetric mountain-shaped connecting plate seats 25 are fixed at both ends of all the blowing pick rods 23, and a hanging rope fixing convex 2501 for fixing the traction rope 5 is reserved in the middle of each of the two mountain-shaped connecting plate seats 25; among them, the branch air pipe 21 is fixed on the surface of the mountain-shaped connecting plate seat 25 on the front, and a plurality of air outlet jacks 2101 for inserting the connecting pipe 26 are opened on the upper surface of the branch air pipe 21; reset tension springs 14 are fixed near both ends of the lower surface of the mountain-shaped connecting plate seat 25, and the bottom ends of the reset tension springs 14 are fixed on the upper surface of the bottom support plate 20; by setting the reset tension springs 14 in cooperation with the wound traction ropes 5, the two mountain-shaped connecting plate seats 25 can be driven to move up and down cyclically during heat dissipation, so as to form timed heat dissipation for different positions of the storage battery 184.

[0040] Refer to Figures 7 - 10 , vertical sliding insertion holes 2502 with parallel hole center lines are opened near both ends of the upper surface of the mountain-shaped connecting plate seat 25, and guide sliding rods 15 are slidably inserted in the sliding insertion holes 2502. The bottom ends of the two guide sliding rods 15 located at the same end of the blowing pick rod 23 are fixed to the same connecting plate strip 1501; ensure that the blowing pick rod 23 can move horizontally up and down.

[0041] Working principle: When this device is in use, connect the cold water outlet of the water cooling device to the interface of the cold water inlet pipe 3, and connect the water return port to the interface of the cooling water outlet pipe 2, and then the cooling water circulation can be carried out; when it is observed that there are excess water droplets sliding off the surface of the internal U-shaped flat water bag 19, start the reduction motor 7. At this time, start the ventilation and heat dissipation mechanism and the reciprocating traction mechanism at the same time. The start of the reduction motor 7 drives the large winding pulley 6 to rotate. As long as the large winding pulley 6 rotates, it can drive the air blowing mechanism 13 to operate, and then generate an air flow delivered into the blowing pick rod 23. At the same time, through the reset tension spring 14 provided and the wound traction rope 5, during heat dissipation, drive the two mountain-shaped connecting plate seats 25 to move up and down cyclically, and cooperate with the ventilation and heat dissipation mechanism. When absorbing heat from the surface of the battery 184, the U-shaped flat water bag 19 and the water absorption mesh cloth 187 that are attached together can be separated and ventilated regularly, which can not only accelerate the evaporation and heat absorption of the excess water, but also prevent the heat accumulation caused by the local water circulation being blocked.

[0042] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A liquid-cooled photovoltaic energy storage battery pack packaging structure, comprising a box barrel (1), a bottom support plate (20) and a top cover plate (12) combined into a cuboid box body structure. The box barrel (1) is a vertical square tubular structure, and the bottom support plate (20) and the top cover plate (12) are parallel to each other and seal the upper and lower ends of the box barrel (1). A plurality of columns of battery packs (18) with equal spacing are fixed on the upper surface of the bottom support plate (20), and it is characterized in that, Each column of the battery pack (18) includes six storage batteries (184) distributed in an array on the same plane, and a U-shaped flat water bag (19) is arranged between adjacent battery packs (18). Both sides of the U-shaped flat water bag (19) are in contact with the sides of all the storage batteries (184) in the two adjacent columns of battery packs (18) at the same time, and the U-shaped flat water bag (19) is filled with circulating cooling water; a water-absorbing mesh cloth (187) is pasted on one side of each storage battery (184) close to the U-shaped flat water bag (19). An air ventilation and heat dissipation mechanism is also arranged between two adjacent battery packs (18). The air ventilation and heat dissipation mechanism includes blowing and picking rods (23) clamped on both sides of the U-shaped flat water bag (19) and parallel to each other. The two blowing and picking rods (23) are at different heights. Vertical cutting surfaces (2301) are formed on one side of the two blowing and picking rods (23) far away from the clamped U-shaped flat water bag (19), and the vertical cutting surfaces (2301) face the sides of the storage batteries (184); a plurality of blowing holes (2302) communicating with the inside of the blowing and picking rods (23) are formed on the vertical cutting surfaces (2301); one end of the two blowing and picking rods (23) close to the rectangular hole one (101) is communicated with the same inclined three-way pipe (24), and a first connecting pipe (26) is inserted at the inlet pipe of the inclined three-way pipe (24); the other ends of all the first connecting pipes (26) far away from the inclined three-way pipe (24) are fixed with the same horizontal air distribution pipe (21), and an air delivery hose (22) is inserted at the end of the air distribution pipe (21); a blowing mechanism (13) is fixed on the upper surface of the top cover plate (12) close to the front. The blowing mechanism (13) includes a barrel body (131) fixed on the upper surface of the top cover plate (12); a piston plate is hermetically slidably connected to the circumferential inner wall of the barrel body (131), and two one-way air outlet valves (132) and one-way air inlet valves vertically extending into the box barrel (1) are arranged at the bottom of the barrel body (131). The other end of the air delivery hose (22) is connected to the air outlet end of the one-way air outlet valve (132); the blowing and picking rods (23) are located between the U-shaped flat water bag (19) and the water-absorbing mesh cloth (187). A plurality of ball grooves are formed on one side of the blowing and picking rods (23) far away from the vertical cutting surfaces (2301), and balls are embedded in the ball grooves.

2. The liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 1, wherein, A rectangular hole one (101) and a rectangular hole two are respectively formed in the front and the rear side of the box barrel (1); a front cabinet door (16) is hinged in the rectangular hole one (101), and an air extraction fan (17) and an observation window are respectively arranged in the middle of the front cabinet door (16); a rear cabinet door is hinged in the rectangular hole two; air holes are formed on the surface of the rear cabinet door; the plane where the U-shaped flat water bag (19) is located is perpendicular to the plane where the front cabinet door (16) is located.

3. The liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 1, characterized in that, The battery pack (18) includes a plurality of horizontally placed and parallel crossbeam support plates (182), and anti - detachment convex rails parallel to each other are provided at the edges of the upper surfaces of all the crossbeam support plates (182) near the two long sides. A same vertical column (181) is inserted between the middles of all the crossbeam support plates (182); A battery clip (183) is clamped and fixed to the lower surface of each storage battery (184), and the whole battery clip (183) is in the shape of an upward - opening U - shaped support plate; A first sliding groove which forms a sliding fit with the anti - detachment convex rail is formed on the lower surface of the battery clip (183); Buffer springs (185) are fixed at the same height on the opposite sides of the vertical column (181), and the extending directions of the buffer springs (185) are opposite to the storage batteries (184) on the anti - detachment convex rails; A magnet (186) is fixed at one end of the buffer spring (185) away from the vertical column (181), and an iron block which is adsorbed to the corresponding magnet (186) is arranged at one end of the top of the battery clip (183) close to the magnet (186); The connection terminals of the storage batteries (184) at both ends of the same crossbeam support plate (182) face the front (16) and the back of the cabinet door respectively.

4. A liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 1, wherein, The connection sequence of the storage batteries (184) in the same battery pack (18) is: first, the storage batteries (184) on the same side of the vertical column (181) are connected in series from top to bottom, and finally, the remaining positive and negative electrodes of the two storage batteries (184) at the bottom are electrically connected.

5. The liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 1, wherein, The overall shape of the U - shaped flat water bag (19) is an upward - opening U - shaped structure, and two vertical connecting pipes are respectively reserved at the top of the U - shaped flat water bag (19). Two through holes (102) are respectively formed in the side surface of the box barrel (1) near the top. A cooling water outlet pipe (2) and a cold water inlet pipe (3) are respectively inserted into the two through holes (102). The cold water inlet pipe (3) is communicated with the tops of all the rear - row connecting pipes, and the cooling water outlet pipe (2) is communicated with the tops of all the front - row connecting pipes; One end of the cooling water outlet pipe (2) and the cold water inlet pipe (3) away from the box barrel (1) is provided with the same water - cooling device.

6. The liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 3, wherein, The tops of all the vertical columns (181) are fixed with a same upward - opening channel - shaped connecting plate rib (188), and both ends of the channel - shaped connecting plate rib (188) are fixed to the inner walls of the left and right sides of the box barrel (1) near the top through bolts.

7. The liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 1, characterized in that At the top of the top cover plate (12) near the middle, two coaxial shaft rod frames (11) are fixed, and the same transmission rod (10) is rotatably connected between the two shaft rod frames (11). At both ends of the transmission rod (10), large rope winding wheels (6) are fixed. Near the circumferential edge of the side of the large rope winding wheel (6) closer to the front, a movable shaft is inserted, and a first connecting rod is rotatably sleeved on the movable shaft. The other end of the first connecting rod is hinged to the middle of the piston plate; near the middle of the upper surface of the top cover plate (12), a reduction motor (7) is fixed, and at the top of the output shaft of the reduction motor (7), a runner (4) is fixed. At the circumferential edge of the side of the runner (4) away from the reduction motor (7), a second connecting rod is hinged; in the middle of the transmission rod (10), a rubbing small gear is key-connected; and on the upper surface of the top cover plate (12) on both sides of the rubbing small gear, symmetric bearing frames (8) are respectively fixed. At the top of the two bearing frames (8), a coaxial sliding bearing is fixed. Between the two sliding bearings, the same anti-twist rack ejector rod (9) is slidably connected. The anti-twist rack ejector rod (9) meshes with the rubbing small gear; and the other end of the second connecting rod is hinged to the end of the anti-twist rack ejector rod (9).

8. A liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 7, characterized in that, Reciprocating traction mechanisms are arranged on both sides of the U-shaped flat water bag (19). The reciprocating traction mechanisms include traction ropes (5) wound around the circumferential outer walls of the two large rope winding wheels (6). The winding directions of the two traction ropes (5) are the same. At both ends of all the blowing and picking rods (23), two parallel and symmetric mountain-shaped connecting plate seats (25) are fixed. And in the middle of the two mountain-shaped connecting plate seats (25), hanging rope fixing protrusions (2501) for fixing the traction ropes (5) are reserved; among them, the branch air pipe (21) is fixed on the surface of the mountain-shaped connecting plate seat (25) on the front side, and on the upper surface of the branch air pipe (21), a plurality of air outlet holes (2101) for inserting the first connecting pipe (26) are opened; near both ends of the lower surface of the mountain-shaped connecting plate seat (25), reset tension springs (14) are fixed, and the bottom ends of the reset tension springs (14) are fixed on the upper surface of the bottom support plate (20).

9. The liquid-cooled heat dissipation type photovoltaic energy storage battery pack packaging structure according to claim 8, characterized in that Vertically and with parallel center lines, sliding insertion holes (2502) are opened near both ends of the upper surface of the mountain-shaped connecting plate seat (25), and guide sliding rods (15) are slidably inserted into the sliding insertion holes (2502). At the bottom ends of the two guide sliding rods (15) at the same end of the blowing and picking rod (23), the same connecting plate strip (1501) is fixed.

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