A car charging pile energy storage power supply

Abstract

This invention belongs to the field of energy storage power technology, specifically relating to an energy storage power supply for an electric vehicle charging pile. It includes a base plate with a first circulation pipe and a second circulation pipe for coolant circulation installed at both ends; an end panel; a sealing shell integrally sealed with the end panel and the base plate; a power core disposed within a sealed space enclosed by the base plate, end panel, and sealing shell; and circulation pipes, one end of which is connected to the first circulation pipe, and the other end to the second circulation pipe for coolant circulation. The circulation pipes are bent into a rectangular zigzag structure, forming alternating open concave spaces. This invention can reduce the impact of external shocks on the energy storage power supply core of the electric vehicle charging pile, ensuring transportation safety. Simultaneously, it isolates the energy storage power supply from its spontaneous combustion environment in the event of an impact or volume expansion, reducing the probability of spontaneous combustion and the occurrence of dangerous events such as spontaneous combustion and explosion.

Description

Technical Field

[0001] This invention belongs to the field of energy storage power technology, and specifically relates to an energy storage power supply for car charging piles. Background Technology

[0002] With the gradual development of new energy vehicles, car charging stations are becoming increasingly common. Although the current availability of charging stations can basically meet the demand, their charging range is still limited. In some areas, charging stations are unevenly distributed, making it difficult to replenish the vehicle's power in time when the battery is depleted or the charging is forgotten. In such cases, car charging station energy storage power supplies are needed. These power supplies can pre-store electrical energy and transport it to any location where it is needed when required, thus replenishing the vehicle's power and meeting the customer's needs in emergency situations.

[0003] Traditional charging stations are fixed in place and generally do not experience problems unless exposed to severe weather or external damage. However, the energy storage power supply for car charging stations is frequently transported by vehicles, significantly increasing the risk of accidents. Especially in severe weather or on rough roads, the energy storage power supply, housed in an energy storage cabinet, is highly susceptible to spontaneous combustion, explosion, or other hazards due to external impacts or traffic accidents. Therefore, a safer energy storage power supply for car charging stations is needed. Summary of the Invention

[0004] The purpose of this invention is to provide an energy storage power supply for car charging piles that can reduce the impact of external shocks on the core of the energy storage power supply, ensuring transportation safety. At the same time, it can isolate the spontaneous combustion environment of the energy storage power supply when it is impacted or expands in volume, reducing the probability of spontaneous combustion and the occurrence of dangerous events such as spontaneous combustion and explosion.

[0005] The specific technical solution adopted by this invention is as follows:

[0006] An energy storage power source for a car charging station includes:

[0007] The base plate has a first circulation pipe and a second circulation pipe installed at its two ends for coolant circulation. One end of the first circulation pipe is equipped with a liquid inlet, and the other end is equipped with a liquid outlet.

[0008] End panel;

[0009] The sealed housing is integrally sealed with the end panel and the base plate;

[0010] The power supply core is disposed within the sealed space enclosed by the base plate, the end plate, and the sealed housing;

[0011] A circulation pipe is laid between the power core and the base plate to cool the power core. One end of the circulation pipe is connected to the first circulation pipe and the other end is connected to the second circulation pipe for the circulation of coolant. The circulation pipe is bent into a rectangular tortuous structure and forms an alternating open concave space.

[0012] A conical suction cup is integrally formed in the concave space of the circulation tube with its opening facing the power core, and is attached to the power core to fix it. A buffer spring is fixedly embedded in the concave space of the circulation tube with its opening facing the base plate to support the power core.

[0013] As a preferred embodiment, the circulation tube is made of elastic rubber, and the conical suction cup is hollow inside and connected to the inside of the circulation tube so that the coolant can flow into it and come into contact with the power core for energy exchange.

[0014] As a preferred embodiment, the conical suction cup is encased with a metal guide plate for heat conduction. The bottom of the metal guide plate protrudes from the bottom of the conical suction cup and extends into the hollow space of the circulation tube. The protruding end of the metal guide plate is provided with a cutting edge to push the metal guide plate to cut the circulation tube when the power core expands or is squeezed beyond a predetermined limit, thereby reducing the probability of coolant leakage and spontaneous combustion.

[0015] As a preferred embodiment, it also includes an L-shaped partition, which is movably embedded between the end panel and the power core. Shock absorbers are fixedly installed on both sides of the L-shaped partition and between the end panel. A vertical section is provided at the end of the circulation tube near the second circulation end tube to be embedded between the power core and the side of the sealing housing for end cooling and buffering. The bottom of the L-shaped partition has an integrally formed flow port that communicates with the first circulation end tube. The end of the circulation tube near the first circulation end tube is connected to the flow port.

[0016] As a preferred embodiment, the vertical section of the circulation tube is also bent into a rectangular tortuous structure, forming an alternating open concave space, within which the concave space is integrally formed with the conical suction cup or the buffer spring is fixedly embedded.

[0017] As a preferred embodiment, the top surface of the L-shaped partition is provided with a limiting groove, the top wall of the sealing shell is fixedly welded with a limiting post, which is slidably embedded in the limiting groove to limit the sliding position of the L-shaped partition, and the top surface of the power supply core is fixedly installed with a positioning post, which is slidably embedded in the limiting groove to limit the position of the power supply core.

[0018] As a preferred embodiment, the end panel is mounted on one end of the base plate near the first circulating end tube, and a power connection terminal for connecting the power supply device is mounted on its outer side. A power connection cell that is plugged into and electrically connected to the power supply core is fixedly mounted on the L-shaped partition. The power connection terminal and the power connection cell are electrically connected by a wire so that when the power supply core expands or is squeezed beyond a predetermined limit, the L-shaped partition is pushed to displace and disconnect the electrical connection between the power connection cell and the power supply core.

[0019] As a preferred embodiment, it also includes an elastic airbag, which is embedded between the L-shaped partition and the end panel to form a buffer zone. The elastic airbag is filled with inert gas, nitrogen, or carbon dioxide, and a pressure safety valve is installed at its bottom. When the power core expands or is compressed beyond a predetermined limit, the L-shaped partition is pushed to compress the elastic airbag, and the filling gas is released from the pressure safety valve into the sealed space to isolate oxygen and reduce the probability of spontaneous combustion of the power core.

[0020] As a preferred embodiment, the L-shaped partition has a mounting through hole at the bottom, the outlet of the pressure safety valve is embedded in the mounting through hole to release filling gas toward the power core, the elastic airbag has an integrally formed through hole for installing the power terminal, and the elastic airbag has an integrally formed mounting notch on the side for installing the shock absorber.

[0021] As a preferred embodiment, the base plate, the end panel, the sealing shell, and the L-shaped partition are made of aluminum alloy, stainless steel, glass fiber reinforced plastic, refractory ceramic, or aluminum-plastic film material. The inner walls of the base plate, the end panel, the sealing shell, and the L-shaped partition are all fitted with a flame-retardant layer and filled with flame-retardant gas.

[0022] The technical effects achieved by this invention are as follows:

[0023] This invention utilizes a circulating tube bent into a rectangular, zigzag structure. Conical suction cups and buffer springs are respectively installed within the alternating open concave spaces formed by this tube. This not only provides support and fixation but also buffers the impact force when the device is subjected to external shocks, reducing the direct impact on the power core and improving safety during transportation. Simultaneously, the conical suction cups embed metal guide plates, which improve energy exchange efficiency. Furthermore, when the power core expands or is compressed beyond a predetermined limit, the cutting edge pushes the metal guide plate to cut the circulating tube, causing coolant leakage. This significantly reduces the heat of the power core, greatly lowering the probability of spontaneous combustion and improving the device's transport safety.

[0024] This invention, through the combination of an L-shaped partition and an elastic airbag, allows the L-shaped partition to be pushed and displaced when the power core expands or is compressed beyond a predetermined limit. This disconnects the electrical connection between the connected cell and the power core, isolating the abnormal power core to prevent it from affecting the entire energy storage device. This ensures that the energy storage device, equipped with this power source, will not be affected by damage to a single power source, thus preventing the entire device from being compromised. Simultaneously, compressing the elastic airbag releases the filling gas to isolate oxygen, ensuring that even if the power core suffers spontaneous combustion damage, there is no ignition medium, further reducing the probability of spontaneous combustion and preventing events such as spontaneous combustion or explosion. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 This is a side sectional view of an embodiment of the present invention;

[0027] Figure 3 This is an exploded view of an embodiment of the present invention;

[0028] Figure 4 This is an exploded view from another perspective of an embodiment of the present invention;

[0029] Figure 5 This is a partial three-dimensional structural schematic diagram in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the combined structure of the base plate, end plate, circulation pipe and L-shaped partition in an embodiment of the present invention;

[0031] Figure 7 This is the present invention. Figure 6 A magnified view of part A in the middle;

[0032] Figure 8 This is the present invention. Figure 6 Side sectional view;

[0033] Figure 9 This is the present invention. Figure 8 A magnified view of part B in the middle;

[0034] Figure 10 This is a schematic diagram of the combined structure of the L-shaped partition and the power supply core in an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the combined structure of the L-shaped partition and the sealing shell in an embodiment of the present invention;

[0036] Figure 12 This is a schematic diagram of the combined structure of the base plate, end plate, power core, circulation tube and L-shaped partition in an embodiment of the present invention;

[0037] Figure 13 This is a schematic diagram of the assembly structure according to an embodiment of the present invention;

[0038] Figure 14 This is a schematic diagram of the container loading structure according to an embodiment of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 1. Base plate;

[0041] 11. First circulation end pipe; 12. Liquid inlet; 13. Liquid outlet; 14. Second circulation end pipe;

[0042] 2. End panel;

[0043] 21. Electrical terminals;

[0044] 3. Sealed housing;

[0045] 31. Limiting post;

[0046] 4. Power supply core;

[0047] 41. Positioning post;

[0048] 5. Circulation pipe;

[0049] 51. Conical suction cup; 52. Buffer spring; 53. Metal guide plate;

[0050] 6. L-shaped partition;

[0051] 61. Limiting slide; 62. Power-connecting battery cell; 63. Flow port; 64. Shock absorber; 65. Mounting through hole;

[0052] 7. Elastic airbags;

[0053] 71. Through hole; 72. Pressure safety valve; 73. Mounting notch;

[0054] 8. Energy storage cabinet;

[0055] 81. Water-cooled equipment; 82. Air-cooled equipment; 83. Main liquid supply pipe; 84. Main liquid return pipe; 85. Branch liquid supply pipe; 86. Branch liquid return pipe. Detailed Implementation

[0056] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0057] like Figures 1-14As shown, an energy storage power supply for a car charging pile includes a base plate 1, an end panel 2 installed at one end of the base plate 1, a sealed housing 3 that is sealed and connected to the end panel 2 and the base plate 1, and a power core 4 installed in the sealed space enclosed by the three. The base plate 1, the end panel 2 and the end panel 2 form an explosion-proof housing to protect the power core 4.

[0058] The base plate 1 has a first circulation pipe 11 and a second circulation pipe 14 installed at both ends for coolant circulation. A circulation pipe 5 for cooling the power supply core 4 is laid between the first circulation pipe 11 and the second circulation pipe 14 and is connected to both. The first circulation pipe 11 is divided into two interconnected spaces. One end of the first circulation pipe 11 is equipped with an inlet pipe 12 connected to one of the spaces, and the other end is equipped with an outlet pipe 13 connected to the other space. At the same time, half of the circulation pipe 5 near the inlet pipe 12 is connected to it for supplying coolant, which is then transported to the second circulation pipe 14 and then flows to the other half of the circulation pipe 5. This half of the circulation pipe 5 is connected to the outlet pipe 13 at the other end of the first circulation pipe 11 to output coolant. The circulation pipe 5 attached to the bottom surface of the power supply core 4 is used to cool it, preventing overheating during use and ensuring the safety of the operating environment temperature.

[0059] See attached document Figures 5-7 The circulation tube 5 is laid between the power core 4 and the base plate 1. Within this space, the circulation tube 5 is bent into a rectangular zigzag structure, forming an alternating open concave space. A conical suction cup 51 is integrally formed in the concave space on the circulation tube 5 with its opening facing the power core 4. It is adsorbed onto the bottom surface of the power core 4 for adsorption and fixation. A buffer spring 52 is fixedly embedded in the concave space on the circulation tube 5 with its opening facing the base plate 1 to press the circulation tube 5 against the bottom surface of the power core 4, supporting it and exchanging energy with it. The heat on its surface is absorbed and carried away by the coolant, thereby achieving the purpose of cooling.

[0060] Furthermore, the circulation tube 5 is made of elastic rubber, and the conical suction cup 51 is hollow inside, connecting with the inside of the circulation tube 5 so that the coolant can flow into it and contact the power core 4 for energy exchange. This increases the contact area between the circulation tube 5 and the power core 4, improving energy exchange efficiency and achieving rapid cooling. At the same time, utilizing the structure and material properties of the conical suction cup 51, the circulation tube 5, and the buffer spring 52, when the energy storage power supply is subjected to external impact, the buffer spring 52 can be compressed, and the conical suction cup 51 and the circulation tube 5 can be compressed, causing deformation to absorb the impact energy. This elastic structure buffers the impact force, reducing the impact on the power core 4 itself, thus ensuring the transportation safety and stability of the energy storage power supply.

[0061] See attached document Figures 8-9 The conical suction cup 51 contains a metal guide plate 53, the bottom of which protrudes from the bottom of the conical suction cup 51 and extends into the hollow space of the circulation pipe 5, contacting the coolant. Utilizing the high thermal conductivity of metal, the heat exchange efficiency between the metal guide plate 53 and the power supply core 4 is improved. Simultaneously, the protruding end of the metal guide plate 53 has a cutting edge. When the power supply core 4 expands or is compressed beyond a predetermined limit, the resulting expansion or compression force pushes the conical suction cup 51 into the circulation pipe 5, causing it to indent. Simultaneously, the cutting edge of the metal guide plate 53 also gradually... As the pusher approaches the inner wall of the circulation pipe 5, until the pushing force exceeds the limit, the power core 4 is already in an abnormal state under this expansion or compression state and cannot work normally. It may spontaneously combust at any time, or even cause an explosion. At this time, the cutting edge of the metal guide plate 53 will cut the inner wall of the circulation pipe 5, causing the pipe to rupture and leak the coolant out, thus preventing the power core 4 from spontaneously combusting under this expansion or compression state, or extinguishing it or reducing its spontaneous combustion rate in the event of spontaneous combustion, thereby reducing the probability of spontaneous combustion and ensuring the safety of the power core 4 under abnormal state.

[0062] In this embodiment, the metal guide plate 53 can be made of copper alloy or aluminum alloy with high thermal conductivity; of course, other existing metal alloys with high thermal conductivity can also be used.

[0063] In some other embodiments, a buffer spring 52 or a conical suction cup 51 can be embedded simultaneously in the alternating open concave space formed by bending the circulation tube 5. It is not necessary to use the alternating structure of the conical suction cup 51 and the buffer spring 52 to support the power core 4. The choice can be made according to the specific usage requirements.

[0064] See attached document Figures 2-4The end panel 2 is installed on the base plate 1 near the end of the first circulation end tube 11, and a buffer space is reserved between it and the power core 4. An L-shaped partition 6 is movably embedded in the buffer space. Shock absorbers 64 are fixedly installed between the two sides of the L-shaped partition 6 and the end panel 2. A vertical section is provided at the end of the circulation tube 5 near the second circulation end tube 14. The vertical section is embedded between the side of the power core 4 and the sealing shell 3, and is also bent into a rectangular zigzag structure, forming an alternating open concave space. A buffer spring 52 is fixedly embedded in the concave space, so that it contacts the power core 4 for end cooling. At the same time, the shock absorber 64 and the buffer spring 52 cooperate to buffer lateral vibration or impact, thereby protecting the side of the power core 4 and improving its protective performance.

[0065] In this embodiment, four sets of shock absorbers 64 are provided and installed at the four corners of the L-shaped partition 6 to provide stable support for it. When the partition moves relative to the end panel 2, the support force at the four corners is more balanced and the movement is more stable.

[0066] Of course, in some other embodiments, a conical suction cup 51 can be integrally formed in the concave space of the vertical section of the circulation tube 5. Utilizing its structural and material properties, it can cooperate with the shock absorber 64 to also play a protective role on the side of the power core 4.

[0067] It should be noted that, referring to the appendix Figures 6-7 The bottom of the L-shaped partition 6 is integrally formed with a flow port 63 that communicates with the first circulation end tube 11. The end of the circulation tube 5 near the first circulation end tube 11 is connected to the flow port 63, so that it is connected to the first circulation end tube 11. At the same time, when the L-shaped partition 6 is squeezed and slides in the buffer space, it will simultaneously pull the circulation tube 5 to extend, thereby transmitting the lateral impact force to the bottom buffer structure through the circulation tube 5. This links the side buffer structure and the bottom buffer structure of the power core 4 to form a buffer unit. Regardless of whether the side or top of the power core 4 is impacted, the set protective structure (i.e., the cutting structure in the conical suction cup 51) will be activated, thereby providing more comprehensive protection for the power core 4 and preventing the protective structure from failing to trigger when an impact occurs.

[0068] Further, refer to the appendix. Figures 10-12To limit the sliding path of the L-shaped partition 6, a limiting groove 61 is provided on the top surface of the L-shaped partition 6. At the same time, a limiting post 31 is fixedly welded to the top wall of the sealing housing 3. By sliding it into the limiting groove 61, the L-shaped partition 6 can only slide along the limiting groove 61. Meanwhile, a positioning post 41 is fixedly installed on the top surface of the power core 4 and is slidably embedded into the limiting groove 61 to limit the position of the power core 4 and the L-shaped partition 6. This ensures that when the L-shaped partition 6 moves, the power core 4 remains in a fixed position and does not move with it.

[0069] In this embodiment, five sets of limiting slide grooves 61 are provided. The limiting post 31 is embedded in the three sets of limiting slide grooves 61 on both sides and in the center to limit the L-shaped partition 6 to slide stably. At the same time, the positioning post 41 is embedded in the other two sets of limiting slide grooves 61 to limit the relative position between the power core 4 and the L-shaped partition 6.

[0070] Please refer to the appendix again. Figures 3-4 In order to disconnect the power supply connection of the power core 4 in case of abnormality and ensure the safety of the energy storage device, the end panel 2 is equipped with a power terminal 21 for connecting the device to be powered on its outer side, and a power connection core 62 that is plugged into and electrically connected to the power core 4 is fixedly installed on the L-shaped partition 6. By electrically connecting the power terminal 21 and the power connection core 62 through a wire and reserving a buffer movement space, when the power core 4 expands or is squeezed beyond a predetermined limit, the expansion force or squeezing force will push the L-shaped partition 6 to move until it reaches the limit and disconnects the electrical connection between the power connection core 62 and the power core 4, so that the power core 4 at that position is disconnected from the power supply, thereby ensuring the safety of the entire power supply device and avoiding damage to the device to be powered by abnormal power supply.

[0071] See attached document Figures 2-5 An elastic airbag 7 is embedded between the L-shaped partition 6 and the end panel 2 to form a buffer zone. The elastic airbag 7 is filled with carbon dioxide, and a pressure safety valve 72 is installed at its bottom. When the power core 4 expands or is squeezed beyond a predetermined limit, it will push the L-shaped partition 6 to squeeze the elastic airbag 7, causing its internal pressure to gradually increase until it reaches the upper limit of the pressure safety valve 72 threshold. This indicates that the power core 4 is in an abnormal state and cannot work normally. It may spontaneously combust at any time, or even explode. At this time, carbon dioxide is released from the pressure safety valve 72 into the surrounding space of the power core 4 to isolate oxygen. Thus, there is no combustion medium when the power core 4 spontaneously combusts, thereby avoiding or delaying the occurrence of spontaneous combustion, reducing the probability of spontaneous combustion of the power core 4, and improving the safety performance of the power core 4 in abnormal states.

[0072] Of course, in other embodiments, the elastic airbag 7 may be filled with an inert gas or a gas such as nitrogen to isolate oxygen.

[0073] To cooperate with other components, the bottom of the L-shaped partition 6 has a mounting through hole 65. By embedding the air outlet of the pressure safety valve 72 into the mounting through hole 65, it can pass through the L-shaped partition 6 and release filling gas toward the power core 4. At the same time, the elastic airbag 7 has an integrally formed through hole 71 for installing the power terminal 21, and the side of the elastic airbag 7 has an integrally formed mounting notch 73 for installing the shock absorber 64, so as to avoid mutual obstruction of movement.

[0074] In this embodiment, the base plate 1, end plate 2, sealing housing 3, and L-shaped partition 6 are made of stainless steel.

[0075] Of course, in other embodiments, the base plate 1, end plate 2, sealing shell 3, and L-shaped partition 6 can be made of aluminum alloy, glass fiber reinforced plastic, fire-resistant ceramic, or aluminum-plastic film material. At the same time, the inner walls of the base plate 1, end plate 2, sealing shell 3, and L-shaped partition 6 can be fitted with a flame-retardant layer, and the flame-retardant layer is filled with flame-retardant gas (consistent with the gas filling the elastic airbag 7). In the event of spontaneous combustion or explosion, the fire can be contained in time, improving the overall fire resistance of the energy storage power supply. At the same time, if an adjacent energy storage power supply spontaneously combusts, it will not endanger the surrounding energy storage power supplies.

[0076] See attached document Figures 13-14 This invention provides an energy storage device in which the energy storage power supply of this embodiment is installed. The device mainly includes an energy storage cabinet 8. The energy storage power supply of this embodiment is installed vertically and parallel on one side of the energy storage cabinet 8. At the same time, a water cooling device 81 and an air cooling device 82 are installed on the other side of the energy storage cabinet 8 to cool the cabinet and the energy storage power supply. The inlet and outlet of the water cooling device 81 are connected to a vertically parallel main supply pipe 83 and a main return pipe 84. The main supply pipe 83 and the main return pipe 84 are matched with the energy storage power supply and are respectively connected to a main supply pipe 85 and a main return pipe 86. By connecting the main supply pipe 85 to the inlet pipe 12 and the main return pipe 86 to the outlet pipe 13, a complete water cooling circuit is formed to water cool the energy storage power supply. At the same time, each main supply pipe 85 and the main return pipe 86 is equipped with a separate solenoid valve to disconnect the supply path when the energy storage power supply is abnormal, so as to ensure the normal circulation of coolant in the energy storage cabinet 8.

[0077] The working principle of this invention is as follows: Under normal conditions, the water cooling device 81 outputs coolant, which passes through the main supply pipe 83, the supply branch pipe 85, the first circulation end pipe 11, and the flow port 63, and enters one half of the circulation pipe 5 for coolant supply. It is then transported to the second circulation end pipe 14 and then flows to the other half of the circulation pipe 5. This half of the circulation pipe 5 is connected to the outlet pipe 13 at the other end of the first circulation end pipe 11 through the flow port 63 of the other part, outputting the coolant. The coolant then flows back to the water cooling device 81 through the return branch pipe 86 and the return main pipe 84, forming a cooling circuit. The circulation pipe 5 attached to the bottom surface of the power core 4 is used to cool it, preventing overheating during use and ensuring the safety of the operating environment temperature. At the same time, the circulation pipe 5, the conical suction cup 51, and the buffer spring 52 cooperate to form a buffer structure at the bottom of the power core 4 for protection. Meanwhile, the L-shaped baffle 6, the elastic airbag 7, and the vertical section of the circulation pipe 5 form a buffer protection on the side of the power core 4.

[0078] When the power core 4 expands or is squeezed to an abnormal state, the resulting expansion or squeezing force will push the conical suction cup 51 into the circulation tube 5 to indent it. Simultaneously, the cutting edge of the metal guide plate 53 will gradually approach the inner wall of the circulation tube 5 until the pushing force exceeds the limit value. At this time, the cutting edge of the metal guide plate 53 will cut the inner wall of the circulation tube 5, causing the pipe to rupture and leak the coolant out, thus preventing the power core 4 from spontaneously combusting under the expansion or squeezing state, or extinguishing it or reducing its spontaneous combustion rate in the event of spontaneous combustion.

[0079] Secondly, when the power core 4 expands or is compressed beyond a predetermined limit, it will push the L-shaped partition 6 to compress the elastic airbag 7, causing its internal pressure to gradually increase until it reaches the upper limit of the pressure safety valve 72. At this time, carbon dioxide is released from the pressure safety valve 72 into the surrounding space of the power core 4, isolating oxygen. Thus, there is no combustion medium when the power core 4 spontaneously combusts, thereby avoiding or delaying the occurrence of spontaneous combustion, reducing the probability of spontaneous combustion of the power core 4, and improving the safety performance of the power core 4 under abnormal conditions.

[0080] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. An energy storage power supply for an automobile charging station, characterized in that, include: The base plate (1) has a first circulation end pipe (11) and a second circulation end pipe (14) for coolant circulation installed at its two ends respectively. One end of the first circulation end pipe (11) is equipped with a liquid inlet (12) and the other end is equipped with a liquid outlet (13). End panel (2); The sealed housing (3) is sealed and connected to the end panel (2) and the base plate (1) in an integral manner; The power core (4) is disposed within the sealed space enclosed by the base plate (1), the end plate (2) and the sealed housing (3); A circulation pipe (5) is laid between the power core (4) and the base plate (1) to cool the power core (4). One end of the circulation pipe (5) is connected to the first circulation end pipe (11), and the other end is connected to the second circulation end pipe (14) for the circulation of coolant. The circulation pipe (5) is bent into a rectangular tortuous structure and forms a concave space with alternating openings. Among them, a conical suction cup (51) is integrally formed in the concave space of the circulation tube (5) facing the power core (4), and is attached to the power core (4) to fix it. A buffer spring (52) is fixedly embedded in the concave space of the circulation tube (5) facing the base plate (1) to support the power core (4). The circulation tube (5) is made of elastic rubber material. The conical suction cup (51) is hollow inside and connected to the inside of the circulation tube (5) so that the coolant can flow into it and come into contact with the power core (4) to exchange energy. The conical suction cup (51) contains a metal guide plate (53) for heat conduction. The bottom of the metal guide plate (53) protrudes from the bottom of the conical suction cup (51) and extends into the hollow space of the circulation pipe (5). The protruding end of the metal guide plate (53) is provided with a cutting edge so that when the power core (4) expands or is squeezed beyond a predetermined limit, the metal guide plate (53) is pushed to cut the circulation pipe (5) to reduce the probability of spontaneous combustion and coolant leakage.

2. The energy storage power supply for a car charging pile according to claim 1, characterized in that: It also includes an L-shaped partition (6), which is movably embedded between the end panel (2) and the power core (4). Shock absorbers (64) are fixedly installed on both sides of the L-shaped partition (6) and between the end panel (2). The circulation pipe (5) has a vertical section at one end near the second circulation end pipe (14) to be embedded between the power core (4) and the side of the sealing shell (3) for end cooling and buffering. The bottom of the L-shaped partition (6) is integrally formed with a flow port (63) that communicates with the first circulation end pipe (11). The end of the circulation pipe (5) near the first circulation end pipe (11) is connected to the flow port (63).

3. The energy storage power supply for a car charging pile according to claim 2, characterized in that: The vertical section of the circulation tube (5) is also bent into a rectangular tortuous structure and forms a concave space with alternating openings. The conical suction cup (51) is integrally formed in the concave space or the buffer spring (52) is fixedly embedded therein.

4. The energy storage power supply for a car charging pile according to claim 2, characterized in that: The L-shaped partition (6) has a limiting groove (61) on its top surface. The top wall of the sealing shell (3) is fixedly welded with a limiting post (31) and slides into the limiting groove (61) to limit the sliding position of the L-shaped partition (6). The top surface of the power core (4) is fixedly installed with a positioning post (41) and slides into the limiting groove (61) to limit the position of the power core (4).

5. The energy storage power supply for a car charging pile according to claim 2, characterized in that: The end panel (2) is installed on one end of the base plate (1) near the first circulation end tube (11), and a power terminal (21) for connecting the power supply device is installed on its outer side. A power connection core (62) that is plugged into the power core (4) and electrically connected is fixedly installed on the L-shaped partition (6). The power terminal (21) and the power connection core (62) are electrically connected by a wire so that when the power core (4) expands or is squeezed beyond a predetermined limit, the L-shaped partition (6) is pushed to displace and disconnect the electrical connection between the power connection core (62) and the power core (4).

6. The energy storage power supply for a car charging pile according to claim 5, characterized in that: It also includes an elastic airbag (7), which is embedded between the L-shaped partition (6) and the end panel (2) to form a buffer zone. The elastic airbag (7) is filled with inert gas, nitrogen or carbon dioxide, and a pressure safety valve (72) is installed at its bottom. When the power core (4) expands or is squeezed beyond a predetermined limit, the L-shaped partition (6) is pushed to squeeze the elastic airbag (7), and the filling gas is released from the pressure safety valve (72) into the sealed space to isolate oxygen and reduce the probability of spontaneous combustion of the power core (4).

7. The energy storage power supply for a car charging pile according to claim 6, characterized in that: The L-shaped partition (6) has an installation through hole (65) at the bottom. The outlet of the pressure safety valve (72) is embedded in the installation through hole (65) to release filling gas toward the power core (4). The elastic airbag (7) has an integrally formed through hole (71) for installing the power terminal (21). The elastic airbag (7) has an integrally formed installation notch (73) on the side for installing the shock absorber (64).

8. The energy storage power supply for a car charging pile according to claim 2, characterized in that: The base plate (1), the end panel (2), the sealing shell (3) and the L-shaped partition (6) are made of aluminum alloy, stainless steel, glass fiber reinforced plastic, fire-resistant ceramic or aluminum-plastic film material. The inner walls of the base plate (1), the end panel (2), the sealing shell (3) and the L-shaped partition (6) are all fitted with flame-retardant layers and filled with flame-retardant gas.

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