High-safety light storage and charging energy system

Abstract

The utility model belongs to the technical field of light storage and charging systems, and particularly relates to a high-safety light storage and charging energy system which comprises a plurality of underground storage mechanisms arranged underground and a solar charging system fixedly connected to the ground. The interior of the underground closed space is fixedly connected with an energy storage battery electrically connected with the solar charging system, the solar charging system comprises a battery panel mounting frame fixedly connected to the ground, the battery panel mounting frame is fixedly connected with a plurality of photovoltaic battery panels, and the photovoltaic battery panels are electrically connected with the energy storage battery; the high-safety light storage and charging energy system further comprises an overground fire-fighting water pipe, and a plurality of fire-fighting branch pipes are fixedly connected to the overground fire-fighting water pipe. According to the utility model, when a single energy storage battery stops running due to thermal runaway of the battery cell, the normal work of other energy storage batteries is not influenced, so that the overall service functions of the energy storage power station and the optical storage and charging system are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of light storage and charging systems, and in particular relates to a high-safety light storage and charging energy system. Background Art

[0002] Solar energy is an inexhaustible green energy source. However, because solar energy is greatly affected by weather and is intermittent, it is often paired with energy storage batteries.

[0003] The solar-storage-charging system acts as a grid energy regulation hub. The electricity collected by the charging station's photovoltaic panels is efficiently converted to DC power, improving energy conversion efficiency by approximately 5% compared to traditional charging stations that rely on AC / DC conversion modules. It also stores excess energy. "When electric vehicles are charging in clusters, this system effectively mitigates the impact of high-power concentrated charging loads on the grid, allowing drivers to enjoy a more stable charging experience." Therefore, it holds broad market potential.

[0004] For example, Chinese patent application number CN213167796U discloses a solar-powered storage and charging device, which includes an AC-DC conversion circuit connected to the power grid on the AC side, a DC bus connected to the AC-DC conversion circuit, a first DC-DC conversion circuit, a second DC-DC conversion circuit, and a third DC-DC conversion circuit connected to the DC bus, a solar panel connected to the first DC-DC conversion circuit, a storage battery connected to the second DC-DC conversion circuit, and an electric vehicle charging gun connected to the third DC-DC conversion circuit. The solar-powered storage and charging device has the dual characteristics of power generation and power consumption. When the power grid is insufficient or faulty, it supplies power to the local power grid. When the power supply is sufficient, it stores solar energy and grid power in the battery. When the electric vehicle needs to be charged, it rationally matches the energy of solar energy, storage energy, and grid power to meet the charging needs of the electric vehicle.

[0005] However, the safety of energy storage batteries still needs to be improved, especially fire accidents caused by thermal runaway of a single battery cell. Once a fire accident occurs, it will threaten the entire energy storage power station and the surrounding environment. In order to reduce the impact of thermal runaway of a single battery cell on the energy storage power station, we propose a high-safety solar storage and charging energy system. Utility Model Content

[0006] The purpose of this utility model is to provide a high-safety photovoltaic energy storage and charging system, which can ensure that when a single energy storage battery stops operating due to thermal runaway of the battery cell, it will not affect the normal operation of other energy storage batteries, thereby ensuring the overall service function of the energy storage power station and the photovoltaic energy storage and charging system.

[0007] The technical solutions adopted by this utility model are as follows:

[0008] A high-safety solar energy storage and charging system includes multiple underground storage mechanisms arranged underground and a solar charging system fixedly connected to the ground. An underground enclosed space is arranged inside the underground building, and an energy storage battery electrically connected to the solar charging system is fixedly connected inside the underground enclosed space.

[0009] In some embodiments, the solar charging system includes a panel mounting rack fixedly connected to the ground, a plurality of photovoltaic panels fixedly connected to the panel mounting rack, and the photovoltaic panels are electrically connected to the energy storage battery.

[0010] In some embodiments, the high-safety solar energy storage and charging system further includes a temperature control system, which includes an air conditioner.

[0011] In some embodiments, there is one air conditioner, and the temperature control system further includes a cooling water inlet pipe and a cooling water outlet pipe. One end of the cooling water inlet pipe and the cooling water outlet pipe are connected to form a connection portion opposite to the air conditioner. A plurality of cooling branches are fixedly connected to the cooling water inlet pipe, and the plurality of cooling branches extend to the interior of a plurality of underground enclosed spaces and contact the energy storage batteries respectively. The plurality of cooling branches are connected to the cooling water outlet pipe at one end away from the cooling water inlet pipe.

[0012] In some embodiments, the high-safety solar energy storage and charging system also includes an above-ground fire water pipe, to which a plurality of fire branches are fixedly connected. The plurality of fire branches extend to the interior of a plurality of underground enclosed spaces respectively, and the water outlet ends of the plurality of fire branches are fixedly connected with fire-fighting temperature-sensing glass balls.

[0013] In some embodiments, the set activation temperature of the fire-fighting temperature-sensitive glass ball is 68°C.

[0014] The technical effects achieved by this utility model are:

[0015] Since each energy storage battery of the high-safety photovoltaic energy storage and charging system of the utility model is located separately inside an independent underground enclosed space, it can ensure that when a single energy storage battery stops operating due to thermal runaway of the battery cell, it will not affect the normal operation of other energy storage batteries, thereby ensuring the overall service function of the energy storage power station and the photovoltaic energy storage and charging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0018] 1. Photovoltaic panels; 2. Energy storage batteries; 3. Charging vehicles; 4. Underground confined spaces; 5. Above-ground firefighting water pipes; 6. Cooling water inlet pipes; 7. Cooling water outlet pipes; 8. Firefighting temperature-sensing glass bulbs; 9. Solar panel mounting brackets; 10. Air conditioners; 11. Cooling branch pipes; 12. Firefighting branch pipes. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0020] like Figure 1 As shown, the high-safety solar energy storage and charging system includes multiple underground storage mechanisms arranged underground and a solar charging system fixedly connected to the ground. The underground storage mechanism can be an underground building constructed underground, or a storage cabinet buried underground or other equipment capable of storing energy storage batteries 2 underground;

[0021] The underground building of this technical solution is provided with an underground enclosed space 4. An energy storage battery 2 electrically connected to a solar charging system is fixedly connected to the underground enclosed space 4. The energy storage battery 2 is electrically connected to the charging system for charging a charging vehicle 3. At this time, when the solar charging system converts light energy into electrical energy and stores it in the energy storage battery 2, the energy storage battery 2 then supplies power to the charging system to charge the charging vehicle 3.

[0022] During the charging process, since each energy storage battery 2 is located separately inside an independent underground enclosed space 4, it can be ensured that when a single energy storage battery 2 stops operating due to thermal runaway of the battery cell, it will not affect the normal operation of other energy storage batteries 2, thereby ensuring the overall service function of the energy storage power station and the solar storage and charging system.

[0023] At the same time, the underground enclosed space 4 can be filled with inert gas to effectively reduce the risk of fire and improve safety.

[0024] Among them, such as Figure 1 As shown, the solar charging system includes a panel mounting frame 9 fixedly connected to the ground, and a plurality of photovoltaic panels 1 are fixedly connected to the panel mounting frame 9. The photovoltaic panels 1 are electrically connected to the energy storage battery 2. The photovoltaic panels 1 can convert solar energy into electrical energy and store it inside the energy storage battery 2.

[0025] like Figure 1 As shown, in order to provide the energy storage battery 2 with a suitable operating temperature, the high-safety solar energy storage and charging system further includes a temperature control system, which includes an air conditioner 10;

[0026] The number of the air conditioner 10 may be one, and the ambient temperature inside the plurality of underground enclosed spaces 4 may be controlled by the air conditioner 10;

[0027] The number of air conditioners 10 can also be multiple, the same as the number of underground confined spaces 4. Multiple air conditioners 10 are respectively installed inside multiple underground confined spaces 4 to independently control the ambient temperature inside the underground confined spaces 4.

[0028] To better control the temperature of the energy storage batteries 2 within multiple underground confined spaces 4 using a single air conditioner 10, this technical solution incorporates a further improvement to the temperature control system: the air conditioner automatically activates both heating and cooling functions for the energy storage batteries. In winter, when the energy storage battery temperature drops too low, the air conditioner's heating function activates, allowing hot water to flow into the battery to heat it. In summer, when the battery temperature rises too high, the air conditioner's cooling function activates, allowing cold water to flow into the battery to cool it down. Take battery cooling as an example: the temperature control system includes a cooling water inlet pipe 6 and a cooling water outlet pipe 7. One end of the cooling water inlet pipe 6 and the cooling water outlet pipe 7 are connected to form a connection part opposite to the air conditioner 10, that is, a pipe body connected to the cooling water inlet pipe 6 and the cooling water outlet pipe 7. The air conditioner 10 is used to cool and cool the water inside the connection part, so that cold water enters the interior of the cooling water inlet pipe 6. A plurality of cooling branches 11 are fixedly connected to the cooling water inlet pipe 6. The plurality of cooling branches 11 extend to the interior of a plurality of underground enclosed spaces 4 and contact the energy storage battery 2. When the cold water in the cooling branch 11 flows through the energy storage battery 2, it will exchange heat with the energy storage battery 2 to cool the energy storage battery 2. The plurality of cooling branches 11 are connected to the cooling outlet pipe 7 at one end away from the cooling water inlet pipe 6, and then flow to the connection part again through the cooling outlet pipe 7 to receive the cooling treatment of the air conditioner 10.

[0029] like Figure 1 As shown, in order to further improve the safety of the system, the high-safety solar energy storage and charging system can also include an above-ground fire water pipe 5. The water inlet end of the above-ground fire water pipe 5 can be connected to a fire water pump or a municipal fire water pipe. A plurality of fire branch pipes 12 are fixedly connected to the above-ground fire water pipe 5. The number of fire branch pipes 12 is the same as the number of underground confined spaces 4. The plurality of fire branch pipes 12 extend to the interior of the plurality of underground confined spaces 4 respectively, and the water outlet ends of the plurality of fire branch pipes 12 are fixedly connected to an automatic water outlet head located at the top of the energy storage battery 2. In normal use, the automatic water outlet head seals the water outlet end of the fire branch pipe 12. When the internal temperature of the energy storage battery 2 is too high due to thermal runaway of a single or local cell or other electrical faults, the automatic water outlet head automatically opens, so that the fire water inside the fire branch pipe 12 is discharged into the interior of the underground confined space 4, submerging the energy storage battery 2, cooling the thermal runaway cell and isolating it from the air, so that the thermal runaway is effectively controlled, thereby achieving the purpose of battery fire extinguishing and ensuring the safety of cells other than the thermal runaway cell.

[0030] The automatic water outlet can be opened electrically or automatically by utilizing the material properties. That is, the automatic water outlet can be any one of a solenoid valve and a fire-fighting temperature-sensitive glass ball 8. The automatic water outlet in this technical solution is preferably a fire-fighting temperature-sensitive glass ball 8. When the temperature around the fire-fighting temperature-sensitive glass ball 8 reaches the set starting temperature, the fire-fighting temperature-sensitive glass ball 8 automatically explodes, allowing the fire-fighting water inside the fire-fighting branch pipe 12 to be discharged.

[0031] Moreover, the set starting temperature of the fire-fighting temperature-sensitive glass ball 8 can be 68° C. or 93° C., and 68° C. is preferably set in this technical solution.

[0032] The working principle of this utility model is:

[0033] When the solar charging system converts light energy into electrical energy and stores it in the energy storage battery 2, the energy storage battery 2 then supplies power to the charging system to charge the charging car 3;

[0034] During the charging process, if the internal temperature of the energy storage battery 2 is too high due to thermal runaway of a single or local cell or other electrical faults, the automatic water outlet will automatically open, allowing the fire water inside the fire branch pipe 12 to be discharged into the underground confined space 4, flooding the energy storage battery 2, cooling the thermal runaway cell and isolating it from the air, so that the thermal runaway is effectively controlled, thereby achieving the purpose of battery fire extinguishing and ensuring the safety of cells other than the thermal runaway cell;

[0035] And because each energy storage battery 2 is located separately inside an independent underground enclosed space 4, it can be ensured that when a single energy storage battery 2 stops operating due to thermal runaway of the battery cell, it will not affect the normal operation of other energy storage batteries 2, thereby ensuring the overall service function of the energy storage power station and the solar storage and charging system.

[0036] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. High-safety solar energy storage and charging system, characterized by: The invention comprises a plurality of underground storage mechanisms arranged underground and a solar charging system fixedly connected to the ground. An underground enclosed space (4) is arranged inside the underground building. An energy storage battery (2) electrically connected to the solar charging system is fixedly connected inside the underground enclosed space (4).

2. The high-safety solar energy storage and charging system according to claim 1 is characterized in that: The solar charging system comprises a solar panel mounting frame (9) fixedly connected to the ground, a plurality of photovoltaic panels (1) fixedly connected to the solar panel mounting frame (9), and the photovoltaic panels (1) and the energy storage battery (2) are electrically connected.

3. The high-safety solar energy storage and charging system according to claim 1 is characterized in that: The high-safety solar energy storage and charging system further comprises a temperature control system, and the temperature control system comprises an air conditioner (10).

4. The high-safety solar energy storage and charging system according to claim 3 is characterized in that: The number of the air conditioner (10) is one, and the temperature control system further comprises a cooling water inlet pipe (6) and a cooling water outlet pipe (7), one end of the cooling water inlet pipe (6) and the cooling water outlet pipe (7) are connected to form a connection portion opposite to the air conditioner (10), a plurality of cooling branch pipes (11) are fixedly connected to the cooling water inlet pipe (6), and the plurality of cooling branch pipes (11) respectively extend to the interior of a plurality of underground enclosed spaces (4) and contact the energy storage battery (2), and the plurality of cooling branch pipes (11) are connected to the cooling water outlet pipe (7) at one end away from the cooling water inlet pipe (6).

5. The high-safety solar energy storage and charging system according to claim 1 is characterized in that: The high-safety solar energy storage and charging system further comprises an above-ground fire water pipe (5), wherein a plurality of fire branch pipes (12) are fixedly connected to the above-ground fire water pipe (5), and the plurality of fire branch pipes (12) respectively extend to the interior of a plurality of underground enclosed spaces (4), and the water outlet ends of the plurality of fire branch pipes (12) are all fixedly connected to fire temperature-sensing glass balls (8).

6. The high-safety solar energy storage and charging system according to claim 5 is characterized in that: The set starting temperature of the fire-fighting temperature-sensitive glass ball (8) is 68°C.

7. The high-safety solar energy storage and charging system according to claim 1 is characterized in that: The underground enclosed space (4) is filled with inert gas.

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