A photovoltaic energy storage battery stack overheat protection device

Abstract

The present invention relates to the field of photovoltaic technology, and in particular to an overheating protection device for a photovoltaic energy storage battery stack, including an energy storage battery cabinet, a battery, an energy storage inverter, etc.; a cabinet door is rotatably connected to the front side of the energy storage battery cabinet; a plurality of batteries are installed inside the energy storage battery cabinet; an energy storage inverter is arranged inside the energy storage battery cabinet; and the energy storage inverter is connected to the plurality of batteries. The present invention replaces the metal shell of the energy storage battery cabinet with silicone rubber to expose it to the marine environment, thereby avoiding corrosion of the metal shell and improving the safety performance of the energy storage battery cabinet. At the same time, a self-priming pump is used to circulate seawater in the first airbag, thereby realizing cooling of the interior of the energy storage battery cabinet. Compared with conventional cooling methods, the cost of using seawater as a cooling source is relatively low. At the same time, seawater has a high heat capacity and can absorb a large amount of heat, thereby effectively improving the cooling effect of the energy storage battery cabinet.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to an overheating protection device for a battery stack for photovoltaic energy storage. Background Art

[0002] At present, the offshore photovoltaic power generation needs to be increased. The main development at present is the floating offshore photovoltaic technology, that is, placing a floating platform at a designated location on the ocean. The floating platform can move within a certain range, and various photovoltaic power generation equipment is installed on the floating platform at the same time. The photovoltaic panels on the floating platform are used to generate electricity. It is necessary to install an energy storage battery cabinet on the floating platform to store a part of the electric energy to ensure the normal power supply of various photovoltaic power generation equipment. However, due to the high concentration of salt spray and high air humidity at sea, the metal of the energy storage battery cabinet shell is exposed to the marine environment for a long time and is prone to corrosion. In addition, the battery stack in the energy storage battery cabinet will generate a lot of heat during the charging and discharging process. However, the heat dissipation of the existing energy storage battery cabinet is usually to use a cooling fan to dissipate the heat inside the energy storage cabinet. Due to the limited power of the cooling fan, when the battery discharge power is too large, its heat dissipation efficiency is limited, which can easily cause the battery to overheat, thereby affecting the battery life. Summary of the invention

[0003] In order to overcome the problem that the metal shell of the energy storage battery cabinet is prone to corrosion due to the high salt fog concentration and high air humidity at sea, in addition, the batteries in the energy storage battery cabinet will generate a large amount of heat during the charging and discharging process, and the existing cooling fans have limited heat dissipation efficiency, especially when the battery discharge power is too large, which easily leads to battery overheating, thereby affecting the service life of the battery, the present invention provides a battery stack overheating protection device for photovoltaic energy storage.

[0004] Technical solution: A photovoltaic energy storage battery stack overheating protection device, including an energy storage battery cabinet, a battery, an energy storage inverter, a fan and a filter; the front side of the energy storage battery cabinet is rotatably connected with a cabinet door; a plurality of batteries are installed on the inside of the energy storage battery cabinet; an energy storage inverter is arranged on the inside of the energy storage battery cabinet; the energy storage inverter is connected to a plurality of batteries; a through hole is opened on the cabinet door; a fan is installed on the through hole of the cabinet door; a filter is fixedly connected to the through hole of the cabinet door; the filter is located in front of the fan; it also includes a first air bag, a first connecting compartment, a second connecting compartment, a self-priming pump, an electrically controlled three-way valve, a water pipe and an overheating protection system; a plurality of first air bags for cooling the energy storage battery cabinet are wrapped on the outside of the energy storage battery cabinet; a first connecting compartment is fixedly connected to the lower side of the energy storage battery cabinet; a first air bag ... wrapped around the outer side of the energy storage battery cabinet; a first air bag is fixedly connected to the lower side of the energy storage battery cabinet; a first air bag is fixedly connected to the lower side of the energy storage battery cabinet; a first air bag is fixedly connected to the lower side of the energy storage battery cabinet; a first air bag is fixedly connected to the lower side of the energy storage battery cabinet; a first air bag is wrapped around the outer side of A first cavity is arranged inside a connecting compartment; the first cavity is connected to the interior of all the first airbags; a second connecting compartment is fixedly connected to the upper side of the energy storage battery cabinet; a second cavity is arranged in the second connecting compartment, and the second cavity is also connected to the interior of all the first airbags; a drain outlet is opened on the front side of the second connecting compartment, and an electric-controlled valve is arranged at the drain outlet; a self-priming pump is fixedly connected to the first connecting compartment; the water outlet of the self-priming pump is connected to the first cavity; the water inlet of the self-priming pump is connected to an electric-controlled three-way valve; a water pipe is connected to the electric-controlled three-way valve; the rear side of the energy storage battery cabinet and the front side of the cabinet door are wrapped with silicone rubber to prevent the metal shell of the energy storage battery cabinet from being corroded, and the first airbag is also made of silicone rubber material; the battery is connected to an anti-overheating system for targeted heat dissipation of the battery.

[0005] In addition, it is particularly preferred that the overheating prevention system includes a heat spreader, a heat pipe, a first water inlet pipe and a first water outlet pipe; a plurality of heat spreaders are fixedly connected in the energy storage battery cabinet, each battery is located between two corresponding heat spreaders, and the upper and lower sides of the battery are in contact with the corresponding heat spreader; a heat pipe for targeted heat dissipation of the battery is fixedly connected to each heat spreader; the left ends of all the heat pipes are commonly connected to the first water inlet pipe; the first water inlet pipe is connected to the first cavity; the right ends of all the heat pipes are commonly connected to the first water outlet pipe; the first water outlet pipe is connected to the second cavity.

[0006] Furthermore, it is particularly preferred that the heat dissipation pipe is configured to be S-shaped.

[0007] Furthermore, it is particularly preferred that the heat dissipation pipe is configured to be made of silicone rubber material.

[0008] In addition, it is particularly preferred that a sealing system is also included; the sealing system includes a rectangular bracket, a baffle, a second airbag, a second water inlet pipe and a second water outlet pipe; a rectangular bracket is arranged on the through hole of the cabinet door, and the interior of the rectangular bracket is arranged to be hollow; the rectangular bracket is located between the fan and the filter; the interior of the rectangular bracket is connected to the interior of the first airbag through the second water inlet pipe; a one-way valve is arranged on the second water inlet pipe; the interior of the rectangular bracket is connected to the interior of the first airbag through the second water outlet pipe; the second water inlet pipe and the second water outlet pipe both pass through the energy storage battery cabinet; a second airbag is fixedly connected to the rear side of the rectangular bracket, and the interior of the second airbag is connected to the interior of the rectangular bracket; the direction of inflation of the second airbag is arranged to expand toward the filter side; a number of baffles are rotatably connected to the through hole of the cabinet door through a torsion spring to prevent seawater from entering the interior of the energy storage battery cabinet; a number of baffles are located between the filter and the rectangular bracket; a protrusion is arranged on the upper side of each baffle; a groove is arranged on the lower side of each baffle.

[0009] Furthermore, it is particularly preferred that the baffle is arranged in an inclined shape with a lower front and a higher rear.

[0010] In addition, it is particularly preferred that a sealing ring is further included; the sealing ring is fixedly connected to the contact surface between the energy storage battery cabinet and the cabinet door.

[0011] In addition, it is particularly preferred that an air intake pipe is further included; the electric-controlled three-way valve is connected to the air intake pipe; and a one-way valve is arranged on the air intake pipe.

[0012] In addition, it is particularly preferred that a connecting pipe is further included; a plurality of connecting pipes are connected to the rectangular bracket; the connecting pipes are configured to be made of rubber material, and the connecting pipes are located between two adjacent baffles.

[0013] In addition, it is particularly preferred that a GPS positioning device is installed in the energy storage battery cabinet.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] Silicone rubber is used to replace the metal shell of the energy storage battery cabinet to expose it to the marine environment, thereby avoiding corrosion of the metal shell and improving the safety performance of the energy storage battery cabinet. At the same time, the seawater is circulated in the first airbag through a self-priming pump to achieve cooling inside the energy storage battery cabinet. Compared with conventional cooling methods, the cost of using seawater as a cooling source is relatively low. At the same time, seawater has a high heat capacity and can absorb a large amount of heat, thereby effectively improving the cooling effect of the energy storage battery cabinet;

[0016] Compared with conventional heat dissipation devices, the first airbag and the heat dissipation tube can be self-cleaned by adjusting the working power of the self-priming pump to repeatedly expand and contract the first airbag and the heat dissipation tube, thereby ensuring the cooling effect of seawater on the energy storage battery cabinet. In addition, since the energy storage battery cabinet is in a marine environment, the maintenance cost of the energy storage battery cabinet is high. Therefore, by cooling the energy storage battery cabinet and realizing self-cleaning at the same time, the workload of manual maintenance of the energy storage battery cabinet is reduced, and the maintenance cost of the energy storage battery cabinet in the later stage is reduced.

[0017] A sealing plate is formed on the through hole on the cabinet door through all the baffles to prevent the external seawater from entering the energy storage battery cabinet through the through hole, thereby preventing the internal equipment of the energy storage battery cabinet from rusting and short circuit, and improving the safety and reliability of the energy storage battery cabinet under extreme weather conditions;

[0018] The buoyancy of the energy storage battery cabinet in the sea is increased by inflating the first airbag, so that the energy storage battery cabinet floats on the sea surface, reducing the water pressure on the energy storage battery cabinet, and avoiding the situation where the energy storage battery cabinet sinks to the seabed and causes seawater to penetrate into the interior. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the overheating protection device for a photovoltaic energy storage battery stack of the present invention;

[0020] Figure 2 This is a diagram of the cabinet door of the present invention in an unfolded state;

[0021] Figure 3 It is a combined cross-sectional view of the first airbag, the first connecting chamber and the second connecting chamber of the present invention;

[0022] Figure 4 For the present invention Figure 3 A in the enlarged view;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the overheating prevention system of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the heat dissipation pipe, the first water inlet pipe and the first water outlet pipe combined according to the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the sealing system of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the rectangular bracket, the connecting pipe and the baffle assembly of the present invention;

[0027] Fig. 9 For the present invention Figure 8 The enlarged view of point B in the figure;

[0028] Fig.10This is a diagram of the sealing state of the baffle of the present invention.

[0029] In the figure: 1-energy storage battery cabinet, 1001-cabinet door, 2-battery, 3-energy storage inverter, 4-first airbag, 5-first connecting compartment, 5001-first cavity, 6-second connecting compartment, 6001-second cavity, 6002-drain outlet, 7-self-priming pump, 8-electrically controlled three-way valve, 9-water pipe, 10-fan, 11-filter, 201-heat sink, 202-heat pipe, 203-first water inlet pipe, 204-first water outlet pipe, 301-rectangular bracket, 302-baffle, 30201-bump, 30202-groove, 303-second airbag, 304-second water inlet pipe, 305-second water outlet pipe, 401-sealing ring, 402-inlet pipe, 403-connecting pipe. DETAILED DESCRIPTION

[0030] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0031] Example 1

[0032] like Figure 1-Figure 6 As shown, a photovoltaic energy storage battery stack overheat protection device includes an energy storage battery cabinet 1, a battery 2, an energy storage converter 3, a fan 10 and a filter 11; the front side of the energy storage battery cabinet 1 is rotatably connected to a cabinet door 1001; the shells of the energy storage battery cabinet 1 and the cabinet door 1001 are both made of metal materials; three batteries 2 are installed on the inner side of the energy storage battery cabinet 1; an energy storage converter 3 is arranged on the inner side of the energy storage battery cabinet 1; the energy storage converter 3 is connected to the three batteries 2; a through hole is opened on the cabinet door 1001; a fan 10 is installed on the through hole of the cabinet door 1001; a filter 11 is fixedly connected to the through hole of the cabinet door 1001; the filter 11 is located in front of the fan 10;

[0033] It also includes a first airbag 4, a first connecting compartment 5, a second connecting compartment 6, a self-priming pump 7, an electrically controlled three-way valve 8, a water pipe 9 and an overheating prevention system; the outside of the energy storage battery cabinet 1 is wrapped with six left-right symmetrical first airbags 4; the first connecting compartment 5 is fixedly connected to the middle of the lower side of the energy storage battery cabinet 1; a first cavity 5001 is arranged inside the first connecting compartment 5; the first cavity 5001 is connected to the inside of all the first airbags 4; the second connecting compartment 6 is fixedly connected to the middle of the upper side of the energy storage battery cabinet 1; the second cavity 6001 is arranged in the second connecting compartment 6, and the second cavity 6001 is also connected with the interior of all the first airbags 4; a drain outlet 6002 is opened on the front side of the second connecting compartment 6, and an electric-controlled valve is arranged at the drain outlet 6002; a self-priming pump 7 is fixedly connected in the first connecting compartment 5; the water outlet of the self-priming pump 7 is connected with the first cavity 5001; the water inlet of the self-priming pump 7 is connected with an electric-controlled three-way valve 8; the electric-controlled three-way valve 8 is connected with a water pipe 9; the rear side of the energy storage battery cabinet 1 and the front side of the cabinet door 1001 are wrapped with silicone rubber, and the first airbag 4 is also made of silicone rubber material; the battery 2 is connected with an overheating protection system.

[0034] The overheating prevention system includes a soaking plate 201, a heat dissipation pipe 202, a first water inlet pipe 203 and a first water outlet pipe 204; six soaking plates 201 are fixedly connected in the energy storage battery cabinet 1, each battery 2 is located between two corresponding soaking plates 201, and the upper and lower sides of the battery 2 are in contact with the corresponding soaking plates 201; a heat dissipation pipe 202 is fixedly connected to each soaking plate 201; the left ends of all the heat dissipation pipes 202 are commonly connected to the first water inlet pipe 203; the first water inlet pipe 203 is connected to the first cavity 5001; the right ends of all the heat dissipation pipes 202 are commonly connected to the first water outlet pipe 204; the first water outlet pipe 204 is connected to the second cavity 6001.

[0035] Furthermore, in order to prolong the time that the seawater flows in the pipe and improve the heat dissipation effect of the seawater on the battery 2, the shape of the heat dissipation pipe 202 is set to be S-shaped.

[0036] Furthermore, in order to remove impurities attached to the inner wall of the heat dissipation pipe 202 and ensure the cooling effect of seawater on the energy storage battery cabinet 1, the heat dissipation pipe 202 is configured to be made of silicone rubber material.

[0037] The silicone rubber material used in the first airbag 4 and the silicone rubber material used in the heat dissipation pipe 202 are both modified silicone rubber materials to which some thermally conductive fillers such as metal oxides, carbon powder and metal powder are added. The modified silicone rubber material to which thermally conductive fillers are added has good thermal conductivity. In addition, by controlling the content of the added thermally conductive fillers, the modified silicone rubber material can maintain a certain flexibility and elasticity while ensuring that the modified silicone rubber material has good thermal conductivity.

[0038] The photovoltaic energy storage battery cabinet 1 of the offshore floating platform is described in detail below:

[0039] First, the energy storage battery cabinet 1 is fixed on the offshore floating platform, and the water pipe 9 is connected to the external water pumping pipe connected to the seawater, and the drain outlet 6002 is connected to the external water supply pipe connected to the seawater, and the external power supply cable is connected to the energy storage inverter 3, and the photovoltaic panels on the floating platform are used to generate electricity. At the same time, a part of the electric energy is transmitted to the energy storage inverter 3 through the power supply cable, and then the electric energy is converted by the energy storage inverter 3 and stored in the battery 2 to ensure the stability of electricity consumption of various photovoltaic power generation equipment. In this process, the battery 2 and the energy storage inverter 3 will generate more heat when working, so that the internal temperature of the energy storage battery cabinet 1 increases, and the fan 10 on the control cabinet door 1001 starts to work, and the fan is turned on from the front to the back. 10 rotates clockwise, so that the air in the energy storage battery cabinet 1 is discharged to the outside, and then the heat in the energy storage battery cabinet 1 is taken away, so as to achieve the cooling of the energy storage battery cabinet 1. At the same time, the filter 11 intercepts impurities such as salt particles and dust in the outside air to prevent salt particles and dust from entering the internal equipment of the energy storage battery cabinet 1 through the through holes on the cabinet door 1001. However, due to the limited power of the fan 10, the heat dissipation effect of the energy storage battery cabinet 1 is not good. At the same time, since the metal shell of the energy storage battery cabinet 1 is exposed to the marine environment for a long time, its shell is in contact with seawater and salt mist for a long time, so that a salt layer is attached to the surface of the shell, which accelerates the corrosion of the metal shell. For this reason, the energy storage battery cabinet 1 and the cabinet door 100 are jointly protected by the first airbag 4 and the silicone rubber material. 1 is wrapped with a metal shell. Compared with the metal shell of the energy storage battery cabinet 1, silicone rubber has good corrosion resistance and aging resistance. Therefore, the metal shell of the energy storage battery cabinet 1 is exposed to the marine environment by replacing the metal shell of the energy storage battery cabinet 1 with silicone rubber, thereby avoiding corrosion of the metal shell and improving the safety performance of the energy storage battery cabinet 1. On this basis, the electric-controlled three-way valve 8 is controlled to connect the water pipe 9 with the water inlet of the self-priming pump 7, and then the self-priming pump 7 is controlled to start working, so that seawater enters the external water pumping pipe, and then enters the self-priming pump 7 through the water pipe 9. The seawater is pumped into the first cavity 5001 of the first connecting compartment 5 by the self-priming pump 7. As the water pump continues to transport seawater into the first cavity 5001, the seawater in the first cavity 5001 flows into the first airbags 4 on the left and right sides. Until the interior of the first airbag 4 is filled, the seawater enters the second cavity 6001 of the second connecting compartment 6, and the electrically controlled valve in the drain port 6002 is controlled to open, so that the seawater flows through the drain port 6002 to the external water supply pipe, and finally flows back to the ocean. In this way, the seawater circulates in the first airbag 4. Since the first airbag 4 is in contact with the metal shell of the energy storage battery cabinet 1, the heat on the metal shell of the energy storage battery cabinet 1 is taken away when the seawater flows, thereby cooling the interior of the energy storage battery cabinet 1 and improving the heat dissipation effect. Compared with conventional cooling methods, the cost of using seawater as a cooling source is relatively low. At the same time, seawater has a high heat capacity and can absorb a large amount of heat, thereby effectively improving the cooling effect of the energy storage battery cabinet 1.

[0040] Furthermore, when the discharge power of the battery 2 is too large, the battery 2 is prone to overheating, thereby reducing the service life of the battery 2. For this reason, when the self-priming pump 7 pumps seawater into the first cavity 5001, a portion of the seawater in the first cavity 5001 enters the heat dissipation pipe 202 through the first water inlet pipe 203, and then flows into the second cavity 6001 through the first water outlet pipe 204, so that the seawater flows in the heat dissipation pipe 202. At the same time, the heat generated by the battery 2 during operation is evenly transferred to the heat dissipation pipe 202 through the heat spreader 201, so that the heat at the heat dissipation pipe 202 is taken away by the seawater, thereby achieving cooling of the battery 2, avoiding overheating of the battery 2 during operation, and extending the service life of the battery 2. On this basis, by setting the shape of the heat dissipation pipe 202 to an S shape, the time for the seawater to flow in the pipe is extended, and at the same time, the contact area between the heat dissipation pipe 202 and the heat spreader 201 is increased, thereby improving the heat dissipation effect of the seawater on the battery 2.

[0041] When seawater is in contact with the first airbag 4 and the heat dissipation tube 202 for a long time, microorganisms and impurities such as salt in the seawater adhere to the inner walls of the first airbag 4 and the heat dissipation tube 202, affecting the heat transfer, thereby affecting the cooling effect of seawater on the energy storage battery cabinet 1. For this reason, the pumping power of the self-priming pump 7 is controlled to increase, thereby increasing the water pressure in the first cavity 5001, thereby increasing the water pressure in the first airbag 4 and the heat dissipation tube 202. Since the first airbag 4 and the heat dissipation tube 202 are made of silicone rubber material with telescopic properties, the first airbag 4 and the heat dissipation tube 202 expand, and then the pumping power of the self-priming pump 7 is controlled to decrease, thereby reducing the water pressure in the first airbag 4 and the heat dissipation tube 202, and the first airbag 4 and the heat dissipation tube 202 shrink and return to their original state. In this way, The first airbag 4 and the heat dissipation tube 202 expand and contract repeatedly, so that the microorganisms and impurities such as salt attached to the first airbag 4 and the heat dissipation tube 202 are gradually separated from the inner wall, and then the impurities are discharged from the drain port 6002 along with the seawater. Compared with the conventional heat dissipation device, it is only necessary to adjust the working power of the self-priming pump 7 to make the first airbag 4 and the heat dissipation tube 202 expand and contract repeatedly, so as to complete the self-cleaning of the inner wall of the first airbag 4 and the heat dissipation tube 202, thereby ensuring the cooling effect of seawater on the energy storage battery cabinet 1. In addition, since the energy storage battery cabinet 1 is in a marine environment, the maintenance cost of the energy storage battery cabinet 1 is high. Therefore, by cooling the energy storage battery cabinet 1 and realizing self-cleaning at the same time, the workload of manual maintenance of the energy storage battery cabinet 1 is reduced, and the maintenance cost of the energy storage battery cabinet 1 in the later stage is reduced.

[0042] Example 2

[0043] On the basis of Example 1, Figure 7-10As shown, it also includes a sealing system; the sealing system includes a rectangular bracket 301, a baffle 302, a second air bag 303, a second water inlet pipe 304 and a second water outlet pipe 305; a rectangular bracket 301 is provided on the through hole of the cabinet door 1001, and the interior of the rectangular bracket 301 is set to be hollow; the rectangular bracket 301 is located between the fan 10 and the filter 11; the interior of the rectangular bracket 301 is connected to the interior of the first air bag 4 by the second water inlet pipe 304; a one-way valve is provided on the second water inlet pipe 304; the interior of the rectangular bracket 301 is connected to the interior of the first air bag 4 by the second water outlet pipe 305; the second water outlet pipe 305 There is also a one-way valve on it; the second water inlet pipe 304 and the second water outlet pipe 305 both pass through the energy storage battery cabinet 1; the second airbag 303 is fixedly connected to the rear side of the rectangular bracket 301, and the interior of the second airbag 303 is connected to the interior of the rectangular bracket 301; the direction of inflation of the second airbag 303 is set to expand toward the filter screen 11 side; six baffles 302 are rotatably connected to the through hole of the cabinet door 1001 through a torsion spring; the six baffles 302 are all located between the filter screen 11 and the rectangular bracket 301; a protrusion 30201 is provided on the upper side of each baffle 302; and a groove 30202 is provided on the lower side of each baffle 302.

[0044] Furthermore, in order to prevent seawater from penetrating into the energy storage battery cabinet 1, the baffle 302 is set to be inclined with the front lower and the back higher.

[0045] On the basis of Example 1, when severe weather such as typhoons and tidal surges occur at sea, the floating platform keeps shaking on the sea surface, and seawater can easily invade the interior of the energy storage battery cabinet 1 through the through holes on the cabinet door 1001, thereby causing corrosion to the internal equipment of the energy storage battery cabinet 1. In more serious cases, it may cause a short circuit or even burn out of the equipment. Therefore, when a typhoon or other weather occurs at sea, the baffle 302 is in an open state, and the one-way valve on the second water outlet pipe 305 is first controlled to be closed, and the working power of the self-priming pump 7 is controlled to increase, thereby increasing the water pressure in the first airbag 4, allowing more seawater to enter the rectangular bracket 301 and the second airbag 303, so that the second airbag 303 is inflated, and because the inflation direction of the second airbag 303 is set to The second airbag 303 expands toward the filter screen 11, thereby pushing the rectangular bracket 301 and the connecting pipe 403 to move forward, so that the left and right edges of the rectangular bracket 301 are respectively fitted with the left and right edges of the baffle 302. As the rectangular bracket 301 continues to move forward, the baffle 302 is pressed forward by the rectangular bracket 301, and the baffle 302 rotates clockwise as viewed from the front to the right. At the same time, the torsion spring between the baffle 302 and the cabinet door 1001 is compressed until the baffle 302 rotates to a vertical state. At this time, the two adjacent baffles 302 fit each other, that is, the protrusion 30201 on the lower baffle 302 fits with the groove 30202 on the upper baffle 302. The baffle plate 302 on the upper side is fitted with the upper edge of the through hole on the cabinet door 1001, and the baffle plate 302 on the lower side is fitted with the lower edge of the through hole on the cabinet door 1001, so that all the baffle plates 302 form a sealing plate on the through hole on the cabinet door 1001, thereby preventing the external seawater from entering the energy storage battery cabinet 1 through the through hole, and at the same time controlling the fan 10 to stop rotating, so as to avoid rust and short circuit of the internal equipment of the energy storage battery cabinet 1, and improve the safety and reliability of the energy storage battery cabinet 1 under extreme weather conditions. After the typhoon weather, the valve of the second water outlet pipe 305 is controlled to open, and at the same time the working power of the self-priming pump 7 is reduced, thereby reducing the water pressure in the second air bag 303, and the second air bag 303 contracts, thereby driving the rectangular bracket 301 to move backward. The baffle 302 moves to separate the rectangular bracket 301 from the baffle 302, and then under the action of the torsion spring between the baffle 302 and the cabinet door 1001, the baffle 302 rotates counterclockwise to reset, and in this process, seawater remains on the baffle 302 close to the filter screen 11. When the baffle 302 is reset, the seawater remaining on the baffle 302 easily flows to the side close to the rectangular bracket 301, and then the seawater easily penetrates into the energy storage battery cabinet 1 through the fan 10. To this end, the baffle 302 is set to an inclined shape with a low front and a high back, so that the seawater remaining on the baffle 302 flows downward along the surface of the baffle 302, so that the remaining seawater moves in the direction close to the filter screen 11, thereby preventing seawater from penetrating into the energy storage battery cabinet 1. Further,Since the filter 11 filters salt particles, dust and other impurities in the outside air for a long time, more impurities are accumulated on the outside of the filter 11, which easily causes the filter 11 to be blocked, affecting the air intake of the through hole on the cabinet door 1001, thereby reducing the heat dissipation of the energy storage battery cabinet 1. To this end, the second airbag 303 is inflated regularly, so that the rectangular bracket 301 presses the baffle 302 forward, and the baffle 302 drives the groove 30202 to rotate synchronously clockwise from left to right, so that the groove 30202 squeezes the filter 11. When the baffle 302 is in a vertical state, the groove 30202 is separated from the filter 11, and then the second airbag 303 is reset and contracted again, so that the baffle 302 is reset and rotated, and the groove 30202 squeezes the filter 11 again, and so on, the filter 11 is continuously squeezed by the groove 30202, so that the filter 11 is continuously vibrated, and then the impurities attached to the outside of the filter 11 are shaken off by vibration, so that the filter 11 is self-cleaned, and the filter 11 is prevented from being blocked and the heat dissipation effect of the fan 10 is reduced.

[0046] Example 3

[0047] On the basis of Example 1 and Example 2, Figure 2 , Figure 4 , Figure 8 and Fig.10 As shown, a sealing ring 401 is also included; the sealing ring 401 is fixedly connected to the contact surface between the energy storage battery cabinet 1 and the cabinet door 1001.

[0048] It also includes an air intake pipe 402 ; the electric-controlled three-way valve 8 is connected to the air intake pipe 402 ; and a one-way valve is provided on the air intake pipe 402 .

[0049] It also includes a connecting pipe 403 ; six connecting pipes 403 are connected to the rectangular bracket 301 ; the connecting pipe 403 is configured to be made of rubber material, and the connecting pipe 403 is located between two adjacent baffles 302 .

[0050] Furthermore, in order to facilitate finding the location of the energy storage battery cabinet 1 , a GPS positioning device is installed in the energy storage battery cabinet 1 .

[0051] When the weather is too bad, such as a typhoon, strong winds may cause the structures such as the bracket fixing the energy storage battery cabinet 1 to deform or detach, so that there is a possibility that the energy storage battery cabinet 1 falls into the sea. However, the equipment in the energy storage battery cabinet 1 is expensive, and falling into the sea will cause huge losses. Therefore, when it is known through the weather forecast that there is extreme weather in the sea area where the energy storage battery cabinet 1 is located, and when the extreme weather comes, the self-priming pump 7 is first controlled to start pumping out the water in the first cavity 5001, so that the water in the first cavity 5001 flows back to the ocean through the water pipe 9, so that the water in the first airbag 4, the heat dissipation pipe 202, the rectangular bracket 301, the connecting pipe 403 and the second airbag 303 are discharged, and then the air intake pipe 402 is opened through the electrically controlled three-way valve 8. It is connected with the water inlet of the self-priming pump 7, and at the same time controls the electric control valve in the drain port 6002 to be closed, and then controls the self-priming pump 7 to start working, so that the outside air enters the self-priming pump 7 through the one-way valve in the air inlet pipe 402, and then the air enters the first cavity 5001, so that the first airbag 4 and the heat dissipation pipe 202 are inflated. At the same time, part of the air in the first airbag 4 enters the rectangular bracket 301 through the second water inlet pipe 304. As the air pressure in the first airbag 4 continues to increase, the air pressure in the rectangular bracket 301 and the second airbag 303 increases, so that the second airbag 303 is inflated, driving the rectangular bracket 301 and the connecting pipe 403 to move forward, thereby squeezing all the baffles 302 forward through the rectangular bracket 301, so that all The baffle 302 forms a sealing plate. At this time, the self-priming pump 7 stops working, and the one-way valve in the air inlet pipe 402 blocks the air in the first cavity 5001 from flowing out of the air inlet pipe 402. When the fixing bracket of the energy storage battery cabinet 1 falls off due to bad weather, causing the energy storage battery cabinet 1 to fall into the sea, the sealing plate formed by the baffle 302 blocks the external seawater from entering the energy storage battery cabinet 1, ensuring that the equipment in the energy storage battery cabinet 1 is not damaged. At the same time, the buoyancy of the energy storage battery cabinet 1 in the sea is increased by the inflated first airbag 4, so that the energy storage battery cabinet 1 floats on the sea surface, reducing the water pressure on the energy storage battery cabinet 1, and avoiding the situation where the energy storage battery cabinet 1 sinks to the bottom of the sea and causes seawater to penetrate the interior. After the bad weather, The position of the energy storage battery cabinet 1 is located by the GPS positioning device in the energy storage battery cabinet 1, and because the energy storage battery cabinet 1 floats on the sea, it is convenient to salvage it manually, avoiding the loss caused by the energy storage battery cabinet 1 falling into the sea and being damaged, thereby greatly improving the safety performance of the energy storage battery cabinet 1. On this basis, a sealing ring 401 is fixed on the contact surface between the energy storage battery cabinet 1 and the cabinet door 1001, thereby improving the sealing between the energy storage battery cabinet 1 and the cabinet door 1001, and preventing seawater from entering the interior of the energy storage battery cabinet 1 from the gap between the energy storage battery cabinet 1 and the cabinet door 1001. Furthermore, by setting the connecting pipe 403 to adopt rubber material, when the second airbag 303 is inflated, the connecting pipe 403 is also inflated synchronously.Thus, the two adjacent connecting tubes 403 are pressed against each other, the connecting tube 403 located at the uppermost side expands to fit the upper edge of the rectangular bracket 301, and the connecting tube 403 located at the lowermost side expands to fit the lower edge of the rectangular bracket 301. Moreover, when the rectangular bracket 301 squeezes the baffle 302 to a vertical state, the connecting tube 403 expands and also fits closely to the connection between the two adjacent baffles 302, thereby applying pressure to the connection between the two adjacent baffles 302 through the connecting tube 403, improving the sealing of the connection between the two adjacent baffles 302, and at the same time, a protective barrier is formed by the expansion of the adjacent connecting tubes 403. When the baffle 302 is accidentally broken, the protective barrier formed by the connecting tube 403 prevents seawater from entering the interior of the energy storage battery cabinet 1, further improving the reliability of the energy storage battery cabinet 1.

[0052] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A photovoltaic energy storage battery stack overheat protection device, comprising an energy storage battery cabinet (1); a cabinet door (1001) is rotatably connected to the front side of the energy storage battery cabinet (1); a plurality of batteries (2) are installed inside the energy storage battery cabinet (1); an energy storage converter (3) is arranged inside the energy storage battery cabinet (1); the energy storage converter (3) is connected to the plurality of batteries (2); a through hole is opened on the cabinet door (1001); a fan (10) is installed on the through hole of the cabinet door (1001); a filter screen (11) is fixedly connected to the through hole of the cabinet door (1001); the filter screen (11) is located in front of the fan (10); the characteristic is that: The energy storage battery cabinet (1) also includes a first air bag (4); the outer side of the energy storage battery cabinet (1) is wrapped with a plurality of first air bags (4) for cooling the energy storage battery cabinet (1); a first connection compartment (5) is fixedly connected to the lower side of the energy storage battery cabinet (1); a first cavity (5001) is arranged inside the first connection compartment (5); the first cavity (5001) is communicated with the interior of all the first air bags (4); a second connection compartment (6) is fixedly connected to the upper side of the energy storage battery cabinet (1); a second cavity (6001) is arranged inside the second connection compartment (6), and the second cavity (6001) is also communicated with the interior of all the first air bags (4); the front side of the second connection compartment (6) is provided with a A water outlet (6002) is provided at the water outlet (6002); a self-priming pump (7) is fixedly connected in the first connection compartment (5); a water outlet of the self-priming pump (7) is in communication with the first cavity (5001); a water inlet of the self-priming pump (7) is in communication with an electrically controlled three-way valve (8); a water pipe (9) is in communication with the electrically controlled three-way valve (8); the rear side of the energy storage battery cabinet (1) and the front side of the cabinet door (1001) are both wrapped with silicone rubber to prevent the metal shell of the energy storage battery cabinet (1) from being corroded, and the first airbag (4) is also made of silicone rubber material; an overheating prevention system for targeted heat dissipation of the battery (2) is connected to the battery (2); The cabinet door (1001) also includes a sealing system; the sealing system includes a rectangular bracket (301); the rectangular bracket (301) is arranged on the through hole of the cabinet door (1001); the interior of the rectangular bracket (301) is arranged to be hollow; the rectangular bracket (301) is located between the fan (10) and the filter (11); the interior of the rectangular bracket (301) and the interior of the first airbag (4) are connected to a second water inlet pipe (304); a one-way valve is arranged on the second water inlet pipe (304); the interior of the rectangular bracket (301) and the interior of the first airbag (4) are connected to a second water outlet pipe (305); the second water outlet pipe (305) also has a one-way valve; both the second water inlet pipe (304) and the second water outlet pipe (305) are connected to each other. The rectangular bracket (301) penetrates the energy storage battery cabinet (1); a second airbag (303) is fixedly connected to the rear side of the rectangular bracket (301), and the interior of the second airbag (303) is communicated with the interior of the rectangular bracket (301); the second airbag (303) is inflated in a direction that expands toward the filter screen (11); a plurality of baffles (302) are rotatably connected to the through hole of the cabinet door (1001) via a torsion spring to prevent seawater from entering the interior of the energy storage battery cabinet (1); the plurality of baffles (302) are located between the filter screen (11) and the rectangular bracket (301); a convex block (30201) is provided on the upper side of each baffle (302); and a groove (30202) is provided on the lower side of each baffle (302); After the second airbag (303) is inflated, the left and right edges of the rectangular bracket (301) are respectively fitted with the left and right edges of the baffle (302). As the rectangular bracket (301) continues to move, the baffle (302) is forced to rotate to a vertical state. At this time, two adjacent baffles (302) are fitted with each other, so that all the baffles (302) form a sealing plate on the through hole on the cabinet door (1001).

2. A photovoltaic energy storage battery stack overheat protection device according to claim 1, characterized in that: The overheating prevention system comprises a soaking plate (201); a plurality of soaking plates (201) are fixedly connected in the energy storage battery cabinet (1); each battery (2) is located between two corresponding soaking plates (201), and the upper side and the lower side of the battery (2) are in contact with the corresponding soaking plate (201); each soaking plate (201) is fixedly connected with a heat dissipation pipe (202) for performing targeted heat dissipation on the battery (2); the left ends of all the heat dissipation pipes (202) are commonly connected to a first water inlet pipe (203); the first water inlet pipe (203) is connected to a first cavity (5001); the right ends of all the heat dissipation pipes (202) are commonly connected to a first water outlet pipe (204); the first water outlet pipe (204) is connected to a second cavity (6001).

3. A photovoltaic energy storage battery stack overheat protection device according to claim 2, characterized in that: The shape of the heat dissipation pipe (202) is set to be S-shaped.

4. A photovoltaic energy storage battery stack overheat protection device according to claim 3, characterized in that: The heat dissipation pipe (202) is configured to be made of silicone rubber material.

5. A photovoltaic energy storage battery stack overheat protection device according to claim 1, characterized in that: The baffle (302) is arranged in an inclined shape with a lower front and a higher rear.

6. A photovoltaic energy storage battery stack overheat protection device according to claim 5, characterized in that: It also includes a sealing ring (401); the sealing ring (401) is fixedly connected to the contact surface between the energy storage battery cabinet (1) and the cabinet door (1001).

7. A photovoltaic energy storage battery stack overheat protection device according to claim 1, characterized in that: It also includes an air intake pipe (402); the electric-controlled three-way valve (8) is connected to the air intake pipe (402); and a one-way valve is provided on the air intake pipe (402).

8. A photovoltaic energy storage battery stack overheat protection device according to claim 1, characterized in that: It also includes a connecting pipe (403); a plurality of connecting pipes (403) are connected to the rectangular bracket (301); the connecting pipes (403) are configured to be made of rubber material, and the connecting pipes (403) are located between two adjacent baffles (302).

9. A photovoltaic energy storage battery stack overheat protection device according to claim 6, characterized in that: A GPS positioning device is installed in the energy storage battery cabinet (1).

Images