A photovoltaic power generation and energy storage battery protection mechanism

Abstract

This invention provides a protective mechanism for photovoltaic (PV) power generation and energy storage batteries, relating to the field of PV power generation technology. The protective mechanism includes a cooling storage chamber, and further includes: a ventilation mounting box fixedly mounted on the upper end of the cooling storage chamber; a limiting connection mechanism connected to the cooling storage chamber and located at the bottom of the ventilation mounting box; and a cooling mechanism including a positioning ring, ventilation columns, and a circulation system. The positioning ring is used to clamp and position the energy storage cells, and the ventilation columns are located at the upper and lower ends of the positioning ring. This PV power generation and energy storage battery protective mechanism, through the cooperation of the buffer spring pad of the limiting connection mechanism and the arc-shaped spring of the positioning ring, achieves dual buffering and shock absorption in both vertical and horizontal directions, effectively resisting vibration and impact during transportation and operation, preventing cell displacement and damage, improving cell operational stability, and solving the problem of cell vibration displacement easily causing damage.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, specifically to a protective mechanism for photovoltaic power generation energy storage batteries. Background Technology

[0002] Photovoltaic power generation, as an important form of clean and renewable energy, occupies a key position in the transformation of the energy structure, and energy storage batteries are the core components of photovoltaic power generation systems to achieve energy storage and stable output. Photovoltaic power generation systems are mostly installed outdoors, on rooftops, in deserts, and other environments. Energy storage batteries are constantly exposed to problems such as vibration and shock, sudden temperature changes, and high-temperature overload, which can easily lead to safety hazards such as cell displacement, thermal runaway, lifespan degradation, and even explosion.

[0003] Chinese patent CN222394993U discloses a protective mechanism for a photovoltaic power generation energy storage battery. The mechanism includes an energy storage battery with symmetrically formed slots. Each slot has a wire fixedly connected inside, and each wire has a conductive sheet fixedly connected to it. Each slot also has a protective component to protect the conductive sheet. The protective component includes symmetrically arranged side plates fixedly connected to the slots. One side plate has a fixed shaft fixedly connected to it, and a fixed gear is fixedly connected to the fixed shaft. The fixed gear meshes with a small gear, and a large gear is fixedly connected to the small gear. The large gear meshes with the teeth on the conductive sheet. By using the protective component, the conductive sheet can be stored away when the energy storage battery is not in use, facilitating placement or transportation of the battery. When the energy storage battery is in use, the conductive sheet extends out, facilitating the connection of external cables.

[0004] Existing photovoltaic energy storage battery protection mechanisms have many shortcomings: on the one hand, they only use simple shells for wrapping and lack targeted buffer and shock absorption structures. During transportation, installation and outdoor operation, vehicle bumps, wind vibrations and equipment operation vibrations can easily lead to poor cell contact and structural damage. On the other hand, temperature control systems are mostly passive heat dissipation or single air cooling, with low heat dissipation efficiency. They cannot cope with the rapid temperature rise during high-power charging and discharging of the cells and lack high-temperature limit protection mechanisms. Therefore, a photovoltaic energy storage battery protection mechanism is proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a protective mechanism for photovoltaic power generation and energy storage batteries, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic power generation energy storage battery protection mechanism, comprising a cooling storage chamber, and further comprising: A ventilation mounting box is fixedly installed at the upper end of the cooling storage chamber; A limiting connection mechanism is connected to the cooling storage chamber and is located at the bottom of the inner side of the ventilation mounting box; The cooling mechanism includes a positioning ring, a ventilation column, and a circulation system. The positioning ring is used to clamp and position the energy storage cell. The ventilation column is located at both ends of the positioning ring. The circulation system is used to circulate and transport coolant. The end of the ventilation column away from the positioning ring is fixedly connected to the circulation system. A temperature sensing system, wherein the temperature sensing system is fixedly connected to and penetrates the limiting connection mechanism; A cell protection ring is installed at the upper end of the circulation system and is connected to the temperature sensing system through a pipe.

[0007] Preferably, the circulation system includes circulation pipes and heat dissipation components; The circulation pipeline runs through the ventilation mounting box. The inlet end of the circulation pipeline is connected to an inlet pipe. Both the inlet and outlet ends of the circulation pipeline are located on one side of the ventilation mounting box and connected to the inside of the cooling storage chamber. The heat dissipation components are located on the surface of the circulation pipeline.

[0008] Preferably, the heat dissipation component includes heat dissipation fins and a heat dissipation fan. The heat dissipation fins are disposed on the outside of the bend in the circulation pipeline, and the heat dissipation fan is disposed on the end face of the heat dissipation fins.

[0009] Preferably, the temperature sensing system includes an infusion cylinder, a temperature sensing column, and a blocking mechanism. The lower end of the infusion cylinder is connected to a limiting connection mechanism, and the upper side of the infusion cylinder is provided with a through hole that is connected to the battery cell protection ring. The temperature sensing column is located at the upper end of the infusion cylinder, and a blocking mechanism is provided inside the temperature sensing column. The lower end of the blocking mechanism is in sliding contact with the inner wall of the infusion cylinder, and mercury is infused into the inner cavity of the temperature sensing column.

[0010] Preferably, the upper end of the blocking mechanism is a telescopic slide rod, which is located inside the temperature sensing column. A sealing plug is provided on the sliding end surface of the telescopic slide rod, and the sealing plug slides in contact with the inner wall of the temperature sensing column. A blocking disc is fixedly connected to the free end of the telescopic slide rod, and a through hole is provided on the end face of the blocking disc. The outer side slides in contact with the inner wall of the infusion cylinder.

[0011] Preferably, the battery cell protective ring is circular in shape with an internal cavity. The outer circumferential surface of the battery cell protective ring is connected to the adjacent filling cylinder, and the inner circumferential surface is provided with an overflow hole.

[0012] Preferably, the outer side of the positioning ring is a circular ring, and an arc-shaped spring piece is arranged on the inner circumferential surface of the circular ring. The upper end of the spring piece is fixedly connected to the inner wall of the circular ring, and the lower end is slidably connected to the groove of the inner wall of the circular ring.

[0013] Preferably, the limiting connection mechanism is a flat plate, with a cell groove on the upper surface and a buffer spring pad on the inner side of the cell groove. The surface of the limiting connection mechanism has a hole connecting the filling cylinder and the cooling storage chamber, and the lower surface of the limiting connection mechanism has a connecting groove.

[0014] Preferably, the ventilation mounting box is provided with heat dissipation plates on both sides, a filter plate is provided on the surface of the heat dissipation plate, a ventilation fan blade is provided on the inner side of the filter plate, and a sealing end cap is provided at the top of the ventilation mounting box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This photovoltaic power generation and energy storage battery protection mechanism, through the cooperation of the buffer spring pad of the limiting connection mechanism and the arc-shaped spring of the positioning ring, achieves dual buffering and shock absorption in both vertical and horizontal directions, effectively resisting vibration and impact during transportation and operation, preventing cell displacement and damage, improving the stability of cell operation, and solving the problem that cell vibration displacement is prone to cause damage.

[0016] 2. This photovoltaic power generation and energy storage battery protection mechanism, through the circulation pipeline of the circulation system, heat dissipation fins and heat dissipation fan, combined with the air-cooling structure of ventilation column and ventilation fan blades, forms a dual temperature control mode of liquid cooling and air cooling, which quickly removes the heat of the battery cell charging and discharging, greatly improves the temperature control efficiency, is suitable for high power operation scenarios, and solves the problem that the heat dissipation efficiency of the single heat dissipation method of the battery cell cannot be efficiently utilized.

[0017] 3. The photovoltaic power generation and energy storage battery protection mechanism, through the mercury thermal expansion triggering mechanism of the temperature sensing system, combined with the overflow structure of the cell protection ring, automatically releases insulating coolant when the cell reaches its extreme high temperature, realizing uncontrolled emergency forced cooling, effectively preventing thermal runaway and deflagration of the cell, and improving the safety performance of the photovoltaic power generation and energy storage system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the heat sink structure of the present invention; Figure 3 This is a schematic diagram of the limiting connection mechanism of the present invention; Figure 4 This is a schematic diagram of the circulation pipeline structure of the present invention; Figure 5 This is a schematic diagram of the ventilation fan blade structure of the present invention; Figure 6 This is a schematic diagram of the temperature sensing system of the present invention; Figure 7 This is a schematic diagram of the positioning ring structure of the present invention; Figure 8 This is a schematic diagram of the filling cylinder structure of the present invention; Figure 9 This is a schematic diagram of the blocking disk structure of the present invention.

[0019] In the diagram: 1. Cooling storage chamber; 2. Ventilation mounting box; 21. Heat sink; 22. Filter plate; 23. Ventilation fan blade; 24. Sealing end cap; 3. Limiting connection mechanism; 31. Battery cell slot; 32. Buffer spring pad; 33. Connecting groove; 4. Cooling mechanism; 41. Positioning ring; 42. Ventilation column; 43. Circulation system; 431. Circulation pipeline; 4311. Input pipe; 432. Heat dissipation component; 4321. Heat dissipation fins; 4322. Heat dissipation fan; 5. Temperature sensing system; 51. Infusion cylinder; 52. Temperature sensing column; 53. Blocking mechanism; 531. Telescopic slide bar; 532. Sealing slide plug; 533. Blocking disc; 6. Battery cell protective ring. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0022] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0024] like Figure 1-9 As shown, a photovoltaic power generation energy storage battery protection mechanism includes a cooling storage chamber 1, and further includes: a ventilation mounting box 2, a limiting connection mechanism 3, a cooling mechanism 4, a temperature sensing system 5, and a cell protection ring 6; The ventilation mounting box 2 is fixedly installed on the upper end of the cooling storage chamber 1. The limiting connection mechanism 3 is connected to the cooling storage chamber 1 and is located at the bottom of the inner side of the ventilation mounting box 2. The cooling mechanism 4 includes a positioning ring 41, a ventilation column 42, and a circulation system 43. The positioning ring 41 is used to clamp and position the energy storage cell. The ventilation column 42 is located at the upper and lower ends of the positioning ring 41. The circulation system 43 is used to circulate and transport coolant. The end of the ventilation column 42 away from the positioning ring 41 is fixedly connected to the circulation system 43. The temperature sensing system 5 is fixedly connected to and connected to the limiting connection mechanism 3. The cell protection ring 6 is located on the upper end of the circulation system 43 and is connected to the temperature sensing system 5 through a pipe.

[0025] In this embodiment, the cooling storage chamber 1 stores insulating coolant to provide a cooling medium for the entire mechanism. It also serves as a bottom support structure to ensure overall installation stability. A booster pump is installed inside to allow the insulating coolant to overflow in a timely manner. A control unit is installed at the top of the cooling storage chamber 1. The control unit is used to control the start and stop of the motor and pump of the device. The control unit has a built-in temperature monitoring component to monitor the temperature of the battery cells.

[0026] In an optional embodiment, the circulation system 43 includes a circulation pipe 431 and a heat dissipation assembly 432; The circulation pipe 431 passes through the ventilation mounting box 2. The input end of the circulation pipe 431 is connected to the input pipe 4311. Both the input and output ends of the circulation pipe 431 are located on one side of the ventilation mounting box 2 and connected to the inside of the cooling storage chamber 1. The heat dissipation component 432 is located on the surface of the circulation pipe 431.

[0027] In this embodiment, the circulation pipe 431 is made of aluminum alloy with excellent thermal conductivity and is arranged close to the outer wall of the battery cell to maximize the absorption of heat from the battery cell. The input pipe 4311 is connected to the pump body to provide power for the circulation of coolant.

[0028] In an optional embodiment, the heat dissipation assembly 432 includes heat dissipation fins 4321 and a heat dissipation fan 4322. The heat dissipation fins 4321 are disposed on the outside of the bend in the circulation pipe 431, and the heat dissipation fan 4322 is disposed on the end face of the heat dissipation fins 4321.

[0029] In this embodiment, the heat dissipation fins 4321 are arranged in an array so that the heat inside the circulation pipe 431 can be quickly dissipated, and the cooling fan 4322 can accelerate the heat dissipation effect of the heat dissipation fins 4321.

[0030] In an optional embodiment, the temperature sensing system 5 includes an infusion cylinder 51, a temperature sensing column 52, and a blocking mechanism 53. The lower end of the infusion cylinder 51 is connected to the limiting connection mechanism 3, and the upper side of the infusion cylinder 51 is provided with a through hole and connected to the battery cell protection ring 6. The temperature sensing column 52 is provided at the upper end of the infusion cylinder 51, and the blocking mechanism 53 is provided inside the temperature sensing column 52. The lower end of the blocking mechanism 53 is in sliding contact with the inner wall of the infusion cylinder 51, and mercury is infused into the inner cavity of the temperature sensing column 52.

[0031] In this embodiment, the amount of mercury filling inside the temperature sensing column 52 is set according to the cell's safe temperature threshold. When the temperature is too high, an expansion action is triggered to achieve automatic sensing without electrical control.

[0032] In an optional embodiment, the upper end of the blocking mechanism 53 is a telescopic slide rod 531, which is disposed inside the temperature sensing column 52. A sealing plug 532 is provided on the sliding end surface of the telescopic slide rod 531, and the sealing plug 532 slides in contact with the inner wall of the temperature sensing column 52. A blocking disk 533 is fixedly connected to the free end of the telescopic slide rod 531. A through hole is provided on the end face of the blocking disk 533, and the outer side slides in contact with the inner wall of the infusion cylinder 51.

[0033] In this embodiment, the sealing plug 532 ensures the sealing of the inner cavity of the temperature sensing column 52. After the blocking disk 533 moves down, the filling cylinder 51 is connected to the battery cell protection ring 6, and the cooling medium flows quickly.

[0034] In an optional embodiment, the battery cell protection ring 6 is circular in shape with an internal cavity. The outer circumferential surface of the battery cell protection ring 6 is in communication with the adjacent filling cylinder 51, and the inner circumferential surface is provided with an overflow hole.

[0035] In this embodiment, the overflow holes are distributed in a ring array, so that the insulating coolant is evenly sprayed on the surface of the cell, thereby achieving cooling of the bath liquid and preventing cell explosion.

[0036] In an optional embodiment, the outer side of the positioning ring 41 is a circular ring, and an array of arc-shaped spring pieces are arranged on the inner circumferential surface of the circular ring. The upper end of the spring piece is fixedly connected to the inner wall of the circular ring, and the lower end is slidably connected to the groove of the inner wall of the circular ring.

[0037] In this embodiment, the spring is made of a metal elastic material, which can be adapted to cylindrical energy storage cells, and the clamping force is moderate and does not damage the cell shell.

[0038] In an optional embodiment, the limiting connection mechanism 3 is generally flat, with a battery cell groove 31 on the upper surface of the limiting connection mechanism 3, a buffer spring pad 32 on the inner side of the battery cell groove 31, a hole connecting the filling cylinder 51 and the cooling storage chamber 1 on the surface of the limiting connection mechanism 3, and a connecting groove 33 on the lower surface of the limiting connection mechanism 3.

[0039] In this embodiment, by providing a buffer spring pad 32 inside the cell slot 31, vertical vibration during equipment operation can be effectively absorbed, and the connecting slot 33 has built-in insulated terminals for convenient cell circuit connection.

[0040] In an optional embodiment, heat dissipation plates 21 are provided on both sides of the ventilation mounting box 2, a filter plate 22 is provided on the surface of the heat dissipation plate 21, a ventilation fan blade 23 is provided on the inner side of the filter plate 22, and a sealing end cap 24 is provided at the upper end of the ventilation mounting box 2.

[0041] In this embodiment, the filter plate 22 is a detachable HEPA filter, which effectively filters impurities such as dust and insects, and the heat dissipation plate 21 is made of hollow aluminum alloy plate to improve the overall ventilation efficiency.

[0042] In use, the battery cell is first placed inside the battery cell slot 31 of the limiting connection mechanism 3 through the cooling mechanism 4. The sealing end cover 24 presses down on the battery cell and is fixed to the ventilation mounting box 2 with bolts. When the sealing end cover 24 presses down on the battery cell, the bottom of the battery cell completes the circuit connection through the insulated terminal on the inside of the connecting slot 33. When the equipment is subjected to vertical impact, the buffer spring pad 32 at the bottom of the battery cell undergoes elastic deformation to absorb the vertical vibration energy and play a buffer protection role for the battery cell. When subjected to horizontal vibration impact, the arc-shaped spring piece on the inside of the positioning ring 41 slides along the slide groove and offsets the horizontal impact force through elastic deformation, so that the battery cell will not hit the surrounding inner wall in the vibration impact and ensure the integrity of the battery cell structure. Under normal operating conditions, the photovoltaic power generation system supplies power to the ventilation fan blades 23. The control unit drives the motor to rotate the ventilation fan blades 23. Outside air enters the ventilation installation box 2 after being filtered by the filter plate 22. The airflow quickly flows through the ventilation column 42, carrying away the heat generated on the surface of the battery cell during normal operation, achieving basic air cooling. When the battery cell reaches high temperatures during high-power charging and discharging, the control unit activates the pump inside the cooling storage chamber 1, causing the insulating coolant inside the cooling storage chamber 1 to enter the circulation pipe 431 from the input pipe 4311. The circulation pipe 431 is in contact with the outer wall of the battery cell, rapidly absorbing the high temperature on the surface of the battery cell. The heated coolant is then forced to cool down by the heat dissipation fins 4321 and the cooling fan 4322 during circulation. The liquid flows back to the cooling storage chamber 1, forming a circulating liquid coolant that rapidly reduces the cell temperature. When the cell experiences extreme high temperature due to a fault, the temperature sensing column 52 is subjected to high-temperature radiation, causing the inner metallic mercury to expand rapidly. This pushes the telescopic slide rod 531 and the sealing slide plug 532 downwards, which in turn moves the blocking disc 533 downwards, exposing the connection hole between the filling cylinder 51 and the cell protection ring 6. The insulating coolant in the cooling storage chamber 1 enters the cavity of the cell protection ring 6 through the filling cylinder 51 and then flows out evenly from the overflow hole on the inner circumferential surface, fully covering the cell surface. This achieves powerful emergency cooling, rapidly suppresses the rise in cell temperature, and prevents thermal runaway and deflagration. Thus, it achieves the dual effect of vibration protection and multi-level temperature control protection for photovoltaic power generation energy storage batteries.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0044] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic power generation energy storage battery protection mechanism, comprising a cooling storage chamber (1), characterized in that: Also includes: Ventilation mounting box (2), which is fixedly installed at the upper end of the cooling storage chamber (1); Limiting connection mechanism (3), the limiting connection mechanism (3) is connected to the cooling storage chamber (1), and the limiting connection mechanism (3) is set at the bottom of the inner side of the ventilation installation box (2); Cooling mechanism (4), the cooling mechanism (4) includes a positioning ring (41), a ventilation column (42) and a circulation system (43). The positioning ring (41) is used to clamp and position the energy storage cell. The ventilation column (42) is set at the upper and lower ends of the positioning ring (41). The circulation system (43) is used to circulate and transport coolant. The end of the ventilation column (42) away from the positioning ring (41) is fixedly connected to the circulation system (43). Temperature sensing system (5), wherein the temperature sensing system (5) is fixedly connected to and penetrates the limiting connection mechanism (3); The battery cell protection ring (6) is located at the upper end of the circulation system (43) and is connected to the temperature sensing system (5) through a pipe.

2. The photovoltaic power generation energy storage battery protection mechanism according to claim 1, characterized in that: The circulation system (43) includes circulation pipes (431) and heat dissipation components (432). The circulation pipe (431) passes through the ventilation mounting box (2). The input end of the circulation pipe (431) is connected to the input pipe (4311). The input and output ends of the circulation pipe (431) are both located on one side of the ventilation mounting box (2) and connected to the inside of the cooling storage chamber (1). The heat dissipation component (432) is located on the surface of the circulation pipe (431).

3. The photovoltaic power generation energy storage battery protection mechanism according to claim 2, characterized in that: The heat dissipation component (432) includes heat dissipation fins (4321) and heat dissipation fan (4322). The heat dissipation fins (4321) are located on the outside of the bend of the circulation pipe (431), and the heat dissipation fan (4322) is provided on the end face of the heat dissipation fins (4321).

4. The photovoltaic power generation energy storage battery protection mechanism according to claim 1, characterized in that: The temperature sensing system (5) includes an infusion cylinder (51), a temperature sensing column (52), and a blocking mechanism (53). The lower end of the infusion cylinder (51) is connected to the limiting connection mechanism (3). The upper side of the infusion cylinder (51) is provided with a through hole and is connected to the battery cell protection ring (6). The temperature sensing column (52) is located at the upper end of the infusion cylinder (51). The blocking mechanism (53) is provided inside the temperature sensing column (52). The lower end of the blocking mechanism (53) is in sliding contact with the inner wall of the infusion cylinder (51). Mercury is infused into the inner cavity of the temperature sensing column (52).

5. The photovoltaic power generation energy storage battery protection mechanism according to claim 4, characterized in that: The upper end of the blocking mechanism (53) is a telescopic slide rod (531), which is located inside the temperature sensing column (52). A sealing plug (532) is provided on the sliding end surface of the telescopic slide rod (531). The sealing plug (532) slides in contact with the inner wall of the temperature sensing column (52). A blocking disc (533) is fixedly connected to the free end of the telescopic slide rod (531). A through hole is provided on the end face of the blocking disc (533), and the outer side slides in contact with the inner wall of the infusion cylinder (51).

6. The photovoltaic power generation energy storage battery protection mechanism according to claim 5, characterized in that: The battery cell protective ring (6) is circular in shape with a cavity inside. The outer circumference of the battery cell protective ring (6) is connected to the adjacent filling cylinder (51), and the inner circumference is provided with an overflow hole.

7. The photovoltaic power generation energy storage battery protection mechanism according to claim 1, characterized in that: The outer side of the positioning ring (41) is a circular ring, and an arc-shaped spring is arranged on the inner circumferential surface of the circular ring. The upper end of the spring is fixedly connected to the inner wall of the circular ring, and the lower end is slidably connected to the groove of the inner wall of the circular ring.

8. The photovoltaic power generation energy storage battery protection mechanism according to claim 5, characterized in that: The limiting connection mechanism (3) is flat in shape. The upper surface of the limiting connection mechanism (3) is provided with a cell groove (31), and the inner side of the cell groove (31) is provided with a buffer spring pad (32). The surface of the limiting connection mechanism (3) is provided with a hole that connects the filling cylinder (51) and the cooling storage chamber (1). The lower surface of the limiting connection mechanism (3) is provided with a connecting groove (33).

9. The photovoltaic power generation energy storage battery protection mechanism according to claim 1, characterized in that: The ventilation installation box (2) is provided with heat dissipation plates (21) on both sides, a filter plate (22) is provided on the surface of the heat dissipation plate (21), a ventilation fan blade (23) is provided on the inner side of the filter plate (22), and a sealing end cap (24) is provided at the top of the ventilation installation box (2).

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