Energy storage power supply of automobile charging pile

Abstract

The invention belongs to the technical field of energy storage power supplies, and particularly relates to an automobile charging pile energy storage power supply which comprises a base plate, and a first circulation end pipe and a second circulation end pipe which are used for cooling liquid circulation are installed at the two ends of the base plate correspondingly. An end plate; the sealing shell is hermetically connected with the end panel and the base plate into a whole; the power supply core body is arranged in a sealed space wrapped by the base plate, the end panel and the sealed shell; one end of the circulating pipe is communicated with the first circulating end pipe, the other end of the circulating pipe is communicated with the second circulating end pipe, the circulating pipe is used for circulating flowing of cooling liquid, the circulating pipe is bent to be of a rectangular zigzag structure, and concave spaces with alternate openings are formed. The influence of external impact on the core body of the energy storage power supply of the automobile charging pile can be reduced, the transportation safety is ensured, the spontaneous combustion environment is isolated when the energy storage power supply of the automobile charging pile is impacted or the volume is expanded, the spontaneous combustion probability is reduced, and dangerous events such as spontaneous combustion and explosion are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage power supplies, and in particular relates to an energy storage power supply for a vehicle charging pile. Background Art

[0002] With the gradual development of new energy vehicles, car charging piles are becoming more and more popular. Although the popularity of charging piles at this stage can basically meet the needs, their charging range is still limited. In some areas, charging piles are unevenly distributed. When the vehicle runs out of power or forgets to charge, it is impossible to replenish the vehicle in time. At this time, the car charging pile energy storage power supply is needed. It can store electricity in advance and transport it to any required location by a carrier vehicle when needed to replenish the vehicle to meet the needs of customers in emergency situations.

[0003] Generally, charging piles are fixed and will not cause any problems unless they are damaged by bad weather or external forces. However, since the energy storage power supply for car charging piles often needs to be continuously transported on carrier vehicles, the probability of accidents increases dramatically, especially in some bad weather or rugged roads. The energy storage power supply for car charging piles is placed in the energy storage cabinet, which is prone to spontaneous combustion, explosion and other dangers due to external impact or traffic accident collision. Therefore, a car charging pile energy storage power supply with better safety performance is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a car charging pile energy storage power supply, which can reduce the impact of external impact on the core of the car charging pile energy storage power supply, ensure transportation safety, and at the same time isolate the spontaneous combustion environment of the car charging pile energy storage power supply when it collides or expands in volume, thereby reducing the probability of spontaneous combustion and reducing the occurrence of dangerous events such as spontaneous combustion and explosion.

[0005] The technical solution adopted by the present invention is as follows: An energy storage power supply for a car charging pile, comprising: A base plate, with a first circulation end pipe and a second circulation end pipe for cooling liquid circulation respectively installed at both ends, wherein the first circulation end pipe has a liquid inlet installed at one end and a liquid outlet installed at the other end; End panels; A sealing shell, sealed and connected to the end panel and the base plate; A power source core is disposed in a sealed space surrounded by the base plate, the end panel and the sealed housing; A circulation pipe is laid between the power core and the base plate for cooling the power core, one end of the circulation pipe is connected to the first circulation end pipe, and the other end is connected to the second circulation end pipe for circulating the coolant, and the circulation pipe is bent into a rectangular zigzag structure to form a concave space with alternating openings; Among them, a conical suction cup is integrally formed in the concave space of the circulation tube with an opening facing the power core, and is adsorbed on the power core to fix it. A buffer spring is fixedly embedded in the concave space of the circulation tube with an opening facing the base plate to support the power core.

[0006] As a preferred solution, the circulation tube is made of elastic rubber material, the conical suction cup is hollow inside and is connected to the inside of the circulation tube, so that the coolant flows into the inside and contacts the power core to exchange energy.

[0007] As a preferred embodiment, a metal guide plate is wrapped inside the conical suction cup for heat conduction, and the bottom of the metal guide plate protrudes from the bottom end of the conical suction cup and extends into the hollow space of the circulation pipe, and a cutting edge is provided on the extended protruding end of the metal guide plate to push the metal guide plate to cut the circulation pipe when the power core expands or is squeezed beyond a predetermined limit to reduce the possibility of spontaneous combustion by leaking coolant.

[0008] As a preferred solution, it also includes an L-shaped partition, which is movably embedded between the end panel and the power core, and shock absorbers are fixedly installed between the two sides of the L-shaped partition and the end panel. The circulation pipe is provided with a vertical section near one end of the second circulation end pipe so as to be embedded between the power core and the side of the sealed shell for end cooling and buffering. The bottom of the L-shaped partition is integrally formed with a flow port connected to the first circulation end pipe, and the circulation pipe is connected to the flow port near one end of the first circulation end pipe.

[0009] As a preferred solution, the vertical section of the circulation pipe is also bent into a rectangular zigzag structure to form a concave space with alternating openings, and the conical suction cup is integrally formed in the concave space or the buffer spring is fixedly embedded in the concave space.

[0010] As a preferred solution, a limiting groove is provided on the top surface of the L-shaped partition, a limiting column is fixedly welded on the top wall of the sealing shell, and is slidably embedded in the limiting groove to limit the sliding position of the L-shaped partition, and a positioning column is fixedly installed on the top surface of the power core, and is slidably embedded in the limiting groove to limit the position of the power core.

[0011] As a preferred solution, the end panel is installed on one end of the base plate close to the first circulation end tube, and a power terminal for connecting the equipment to be powered is installed on its outer side, and a power connection cell that is plugged into the power core for electrical connection is fixedly installed on the L-shaped partition, and the power terminal is electrically connected to the power connection cell through a wire, so that when the power core expands or is squeezed beyond a predetermined limit, the L-shaped partition is pushed to move to disconnect the electrical connection between the power connection cell and the power core.

[0012] 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 the bottom of the elastic airbag to push the L-shaped partition to squeeze the elastic airbag when the power core expands or is squeezed beyond a predetermined limit, 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.

[0013] As a preferred solution, a mounting hole is provided at the bottom of the L-shaped partition, and the outlet end of the pressure safety valve is embedded in the mounting hole to release the filling gas toward the power core. A through hole is integrally formed on the elastic airbag for installing the power terminal, and a mounting notch is integrally formed on the side of the elastic airbag for installing the shock absorber.

[0014] As a preferred solution, the base plate, the end panel, the sealed shell and the L-shaped partition are made of aluminum alloy, stainless steel, glass fiber reinforced plastic, refractory ceramics or aluminum-plastic film materials, and the inner walls of the base plate, the end panel, the sealed shell and the L-shaped partition are all adhered with a flame retardant layer and filled with flame-retardant gas.

[0015] The technical effects achieved by the present invention are: The present invention arranges a circulation tube, bends it into a rectangular zigzag structure, and arranges conical suction cups and buffer springs in the concave spaces with alternating openings formed by the circulation tube. Not only can the circulation tube be supported and fixed, but also when the device is impacted by the outside, the material and shape characteristics of the circulation tube can be used to buffer the impact force, thereby reducing the direct impact on the power core and improving the safety during transportation. At the same time, a metal guide plate is embedded in the conical suction cup. While improving the energy exchange efficiency, its cutting edge can push the metal guide plate to cut the circulation tube to leak coolant when the power core expands or is squeezed beyond a predetermined limit, thereby fully reducing the heat of the power core, greatly reducing the probability of its spontaneous combustion, and improving the transportation safety performance of the device.

[0016] The present invention arranges an L-shaped partition to cooperate with an elastic airbag. When the power core expands or is squeezed beyond a predetermined limit, the L-shaped partition can be pushed to move, thereby disconnecting the electrical connection between the powered battery and the power core, so as to isolate the abnormal power core to avoid affecting the entire energy storage device, so that the energy storage device loaded with the energy storage power supply will not affect the function of the entire device due to damage to the local energy storage power supply. At the same time, the elastic airbag is squeezed to release the filling gas to isolate oxygen, so that even if the power core is damaged by spontaneous combustion, there is no spontaneous combustion medium, thereby further reducing the probability of spontaneous combustion, thereby avoiding the occurrence of spontaneous combustion or explosion events. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 2 is a side cross-sectional view of an embodiment of the present invention; Figure 3 is an exploded view of an embodiment of the present invention; Figure 4 is an exploded view from another perspective of an embodiment of the present invention; Figure 5 It is a schematic diagram of a partial three-dimensional structure in an embodiment of the present invention; Figure 6 Schematic diagram of the combined structure of the base plate, the end plate, the circulation pipe and the L-shaped partition plate in the embodiment of the present invention; Figure 7 The present invention Figure 6 A magnified view of the part in the middle; Figure 8 The present invention Figure 6 A side cross-sectional view of Fig. 9 The present invention Figure 8 A magnified view of the part in middle B; Fig.10 Schematic diagram of the combined structure of the L-shaped partition and the power core in an embodiment of the present invention; Fig.11 Schematic diagram of the combined structure of the L-shaped partition and the sealing shell in an embodiment of the present invention; Fig.12 Schematic diagram of the combined structure of the base plate, the end plate, the power core, the circulation tube and the L-shaped partition in the embodiment of the present invention; Fig.13 is a schematic diagram of the assembly structure of an embodiment of the present invention; Fig.14 It is a schematic diagram of the cabinet loading structure of an embodiment of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Base plate; 11. First circulation end pipe; 12. Liquid inlet pipe port; 13. Liquid outlet pipe port; 14. Second circulation end pipe; 2. End panel; 21. Power terminal; 3. Sealed housing; 31. Limiting column; 4. Power core; 41. Positioning column; 5. Circulation pipe; 51. Conical suction cup; 52. Buffer spring; 53. Metal guide plate; 6. L-shaped partition; 61. Limiting slide groove; 62. Power-connecting battery cell; 63. Flow port; 64. Shock absorber; 65. Mounting through hole; 7. Elastic airbag; 71. Through hole; 72. Pressure safety valve; 73. Installation notch; 8. Energy storage cabinet; 81. Water cooling equipment; 82. Air cooling equipment; 83. Liquid supply main pipe; 84. Liquid return main pipe; 85. Liquid supply branch pipe; 86. Liquid return branch pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with 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 specific claims of the present invention.

[0020] like Figure 1-Figure 14 As shown, a car charging pile energy storage power supply includes a base plate 1, an end panel 2 installed at one end of the base plate 1, a sealed shell 3 sealed with the end panel 2 and the base plate 1, and a power core 4 installed in a sealed space surrounded by the three. The base plate 1, the end panel 2 and the end panel 2 form an explosion-proof shell to protect the power core 4.

[0021] Among them, the first circulation end tube 11 and the second circulation end tube 14 for cooling liquid circulation are respectively installed at both ends of the base plate 1, and a circulation tube 5 for cooling the power core 4 is laid between the first circulation end tube 11 and the second circulation end tube 14 and connected with the two. The interior of the first circulation end tube 11 is divided into two spaces that are connected to each other differently. Conversely, one end of the first circulation end tube 11 is equipped with a liquid inlet pipe port 12 connected with one of the spaces, and the other end is equipped with a liquid outlet pipe port 13 which is the same as the other space. At the same time, half of the laid circulation tube 5 close to the liquid inlet pipe port 12 is connected with it for supplying cooling liquid, and then transported to the second circulation end tube 14, and then circulated to the other half of the circulation tube 5. This half of the circulation tube 5 is connected with the liquid outlet pipe port 13 at the other end of the first circulation end tube 11 to output the cooling liquid, and then use the circulation tube 5 attached to the bottom surface of the power core 4 to cool it to avoid overheating during use to ensure the safety of the ambient temperature.

[0022] See attached Figure 5-Figure 7 The circulation pipe 5 is laid between the power core 4 and the base plate 1, and in the space the circulation pipe 5 is bent into a rectangular zigzag structure to form a concave space with alternating openings, and a conical suction cup 51 is integrally formed in the concave space with the opening on the circulation pipe 5 facing the power core 4, which is adsorbed to the bottom surface of the power core 4 to adsorb and fix the power core 4, and a buffer spring 52 is fixedly embedded in the concave space with the opening on the circulation pipe 5 facing the base plate 1 to press the circulation pipe 5 against the bottom surface of the power core 4, support it and exchange energy with it at the same time, absorb the heat on its surface, and take it away with the coolant, thereby achieving the purpose of cooling.

[0023] Furthermore, the circulation tube 5 is made of elastic rubber material, and the conical suction cup 51 is hollow inside, so that it is connected with the inside of the circulation tube 5, so that the coolant flows into the inside and contacts with the power core 4 for energy exchange, thereby increasing the contact area between the circulation tube 5 and the power core 4, and improving the energy exchange efficiency to achieve the purpose of rapid cooling. At the same time, by 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 impacted from the outside, the buffer spring 52 can be compressed, and the conical suction cup 51 and the circulation tube 5 can be compressed at the same time, so that they are deformed to absorb the impact energy, thereby utilizing this elastic structure to buffer the impact force and reduce the impact on the power core 4 itself, so as to ensure the transportation safety and stability of the energy storage power supply.

[0024] See attached Figure 8-Figure 9The conical suction cup 51 is wrapped with a metal guide plate 53, and the bottom of the metal guide plate 53 protrudes from the bottom end of the conical suction cup 51 and extends into the hollow space of the circulation pipe 5, and contacts with the coolant. The high thermal conductivity of metal can improve the heat exchange efficiency between the power core 4 and the metal guide plate 53. At the same time, the extended protruding end of the metal guide plate 53 is provided with a cutting edge. In this way, when the power core 4 expands or squeezes beyond a predetermined limit, the expansion force or squeezing force generated will push the conical suction cup 51 to be recessed into the circulation pipe 5, and the cutting edge of the metal guide plate 53 will also be gradually expanded. Gradually approach the inner wall of the circulation tube 5 until the pushing force exceeds the limit value. In this expanded or squeezed state, the power core 4 is already in an abnormal state and cannot work normally. It may spontaneously combust at any time and even cause an explosion. At this time, the cutting edge of the metal guide plate 53 will cut the inner wall of the circulation tube 5, causing the pipeline to rupture and leak the coolant, thereby avoiding the spontaneous combustion of the power core 4 in the expanded or squeezed state, or using the coolant to extinguish it or reduce its spontaneous combustion speed in the event of spontaneous combustion, thereby reducing the probability of spontaneous combustion and ensuring the safety of the power core 4 in an abnormal state.

[0025] In this embodiment, the metal guide plate 53 may be made of copper alloy or aluminum alloy with relatively high thermal conductivity; of course, other existing metal alloys with relatively high thermal conductivity may also be used.

[0026] In some other embodiments, the buffer spring 52 can be embedded in the alternating open concave space formed by the bending of the circulation tube 5, or the conical suction cup 51 can be integrally formed at the same time. 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, and the selection is made according to specific usage requirements.

[0027] See attached Figure 2-Figure 4 The end panel 2 is installed on one end of the base plate 1 close to the first circulation end tube 11, and a buffer space is reserved between the power core 4, and an L-shaped partition 6 is movably embedded in the buffer space. A shock absorber 64 is fixedly installed between the two sides of the L-shaped partition 6 and the end panel 2, and a vertical section is provided at one end of the circulation tube 5 close to the second circulation end tube 14. The vertical section is embedded between the power core 4 and the side of the sealed shell 3, and is also bent into a rectangular zigzag structure to form a concave space with alternating openings. A buffer spring 52 is fixedly embedded in the concave space to make it contact with the power core 4 for cooling the end. At the same time, the shock absorber 64 cooperates with the buffer spring 52 to buffer lateral vibration or impact, thereby protecting the side of the power core 4 and improving its protection performance.

[0028] In this embodiment, four groups of shock absorbers 64 are provided and respectively installed at the four corners of the L-shaped partition 6 to support it stably so that when it moves relative to the end panel 2, the supporting force at the four corners is more balanced and the movement is more stable.

[0029] 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. By utilizing its structure and material properties and cooperating with the shock absorber 64, it can also play a protective role on the side of the power core 4.

[0030] It should be noted that, refer to the attached Figure 6-Figure 7 A flow port 63 connected to the first circulation end tube 11 is integrally formed at the bottom of the L-shaped partition 6, and the end of the circulation tube 5 close to the first circulation end tube 11 is connected to the flow port 63 to make it 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 synchronously pull the circulation tube 5 to extend, thereby transmitting the lateral impact force through the circulation tube 5 to the buffer structure at the bottom, thereby linking the side buffer structure and the bottom buffer structure of the power core 4 to form a buffer as a whole. Regardless of whether the side or top ground of the power core 4 is impacted, the provided protective structure (i.e., the cutting structure in the conical suction cup 51) will be activated, thereby more comprehensively protecting the power core 4 and avoiding the situation where the protective structure is not triggered when an impact occurs.

[0031] For further information, see Attachment Figure 10-12 In order to 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, and a limiting column 31 is fixedly welded on the top wall of the sealing shell 3. By sliding it into the limiting groove 61, the L-shaped partition 6 can only slide along the limiting groove 61. At the same time, a positioning column 41 is fixedly installed on the top surface of the power core 4, and it is slidably embedded in the limiting groove 61 to limit the position of the power core 4 and the L-shaped partition 6, so that when the L-shaped partition 6 moves, the power core 4 remains in a fixed position and does not move with it.

[0032] In this embodiment, five groups of limiting grooves 61 are provided, wherein the limiting columns 31 are embedded in three groups of limiting grooves 61 on both sides and the center to limit the L-shaped partition 6 to slide stably, and at the same time, the positioning columns 41 are embedded in the other two groups of limiting grooves 61 to limit the relative position between the power core 4 and the L-shaped partition 6.

[0033] Again refer to the attached Figure 3-Figure 4In order to disconnect the power supply connection of the power core 4 under abnormal circumstances and ensure the safety of the energy storage device, the end panel 2 is equipped with a power terminal 21 for connecting the equipment to be powered on its outer side, and a power connection cell 62 that is plugged into the power core 4 and electrically connected is fixedly installed on the L-shaped partition 6. By electrically connecting the power terminal 21 and the power connection cell 62 through a wire and reserving a buffer movement space, when the power core 4 expands or squeezes beyond a predetermined limit, the expansion force or squeezing force will push the L-shaped partition 6 to move until the limit is reached to disconnect the electrical connection between the power connection cell 62 and the power core 4, so that the power supply of the power core 4 at this position is disconnected, so as to ensure the safety of the entire power supply device and avoid abnormal power supply causing damage to the equipment to be powered.

[0034] See attached Figure 2-Figure 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 threshold of the pressure safety valve 72. This indicates that the power core 4 in this state is in an abnormal state and cannot work normally. It may spontaneously combust at any time and even cause an explosion. 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, so that 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 an abnormal state.

[0035] 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.

[0036] In order to cooperate with other components, a mounting hole 65 is opened at the bottom of the L-shaped partition 6. By embedding the outlet end of the pressure safety valve 72 in the mounting hole 65, it can pass through the L-shaped partition 6 to release the filling gas toward the power core 4. At the same time, a through hole 71 is integrally formed on the elastic airbag 7 for installing the power terminal 21, and a mounting notch 73 is integrally formed on the side of the elastic airbag 7 for installing the shock absorber 64 to avoid movement obstruction between each other.

[0037] In this embodiment, the base plate 1, the end plate 2, the sealing shell 3 and the L-shaped partition plate 6 are made of stainless steel.

[0038] Of course, in some other embodiments, the base plate 1, the end panel 2, the sealed shell 3 and the L-shaped partition 6 can be made of aluminum alloy, glass fiber reinforced plastic, refractory ceramics or aluminum-plastic film materials. At the same time, the inner walls of the base plate 1, the end panel 2, the sealed shell 3 and the L-shaped partition 6 can be fitted with a flame retardant layer, and the flame retardant layer is filled with a flame retardant gas (consistent with the filling gas in the elastic airbag 7). Once spontaneous combustion or explosion occurs, the fire can be blocked in time to improve the overall fire resistance of the energy storage power supply. At the same time, when adjacent energy storage power supplies spontaneously combust, the surrounding energy storage power supplies will not be endangered.

[0039] See attached Figure 13-Figure 14 , an energy storage device is provided, in which the energy storage power supply in this embodiment is installed, which mainly includes an energy storage cabinet 8, the energy storage power supply in this embodiment is installed vertically and in parallel on one side of the energy storage cabinet 8, and a water cooling device 81 and an air cooling device 82 are installed on the other side of the energy storage cabinet 8 for cooling the cabinet and the energy storage power supply, the water inlet and outlet of the water cooling device 81 are connected with a vertically parallel liquid supply main pipe 83 and a liquid return main pipe 84, and the two are matched with the energy storage power supply and are respectively connected with a liquid supply branch pipe 85 and a liquid return branch pipe 86, by connecting the liquid supply branch pipe 85 with the liquid inlet pipe port 12, and connecting the liquid return branch pipe 86 with the liquid outlet pipe port 13, so as to form a complete water cooling circuit, and the energy storage power supply is water-cooled, and a separate solenoid valve is installed on each liquid supply branch pipe 85 and the liquid return branch pipe 86, so as to disconnect the liquid supply passage when the energy storage power supply is abnormal, so as to ensure the normal circulation of the cooling liquid in the energy storage cabinet 8.

[0040] The working principle of the present invention is as follows: under normal conditions, the water cooling device 81 outputs the cooling liquid, which passes through the liquid supply main pipe 83, the liquid supply branch pipe 85, the liquid supply branch pipe 85, the first circulation end pipe 11 and the flow port 63, enters half of the circulation pipe 5 for the supply of cooling liquid, and then is 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 with the liquid outlet 13 at the other end of the first circulation end pipe 11 through the flow port 63 of the other part, outputs the cooling liquid, and returns to the water cooling device 81 through the return liquid branch pipe 86 and the return liquid main pipe 84, forming a cooling loop to cool the power supply core 4 by using the circulation pipe 5 attached to the bottom surface of the power supply core 4 to avoid overheating during use, so as to ensure the safety of the use 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 supply core 4 to protect it. At the same time, the L-shaped partition 6, the elastic air bag 7 and the vertical section of the circulation pipe 5 form a buffer protection on the side of the power supply core 4.

[0041] When the power core 4 expands or is squeezed to an abnormal state, the generated expansion force or extrusion force will push the conical suction cup 51 to be recessed into the circulation tube 5, and the cutting edge of the synchronous 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 pipeline to rupture and leak the coolant, thereby preventing the power core 4 in the expanded or squeezed state from spontaneous combustion, or using coolant to extinguish it or reduce its spontaneous combustion speed in the event of spontaneous combustion.

[0042] Secondly, 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 the internal pressure to gradually increase until it reaches the upper threshold 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 the oxygen, so that there is no combustion medium when the power core 4 spontaneously ignites, 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.

[0043] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A car charging pile energy storage power supply, characterized in that: include: A base plate (1) having a first circulation end pipe (11) and a second circulation end pipe (14) for circulating a cooling liquid respectively mounted at both ends thereof, wherein the first circulation end pipe (11) has a liquid inlet pipe opening (12) mounted at one end thereof and a liquid outlet pipe opening (13) mounted at the other end thereof; End panels (2); A sealing shell (3) is integrally connected to the end panel (2) and the base plate (1) in a sealing manner; A power source core (4) is arranged in a 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) and is used 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 circulating the cooling liquid; the circulation pipe (5) is bent into a rectangular zigzag structure and forms a concave space with alternating openings; The concave space of the circulation tube (5) with its opening facing the power source core (4) is integrally formed with a conical suction cup (51) which is adsorbed on the power source core (4) to fix it, and the concave space of the circulation tube (5) with its opening facing the base plate (1) is fixedly embedded with a buffer spring (52) to support the power source core (4).

2. The vehicle charging pile energy storage power supply according to claim 1, characterized in that: The circulation tube (5) is made of elastic rubber material, and the conical suction cup (51) is hollow inside and communicates with the inside of the circulation tube (5) so that the coolant flows into the inside and contacts with the power source core (4) to exchange energy.

3. The vehicle charging pile energy storage power supply according to claim 2, characterized in that: A metal guide plate (53) is wrapped inside the conical suction cup (51) for heat conduction, the bottom of the metal guide plate (53) protrudes from the bottom end of the conical suction cup (51) and extends into the hollow space of the circulation tube (5), and a cutting edge is provided on the extended protruding end of the metal guide plate (53) so that when the power source core (4) expands or is squeezed beyond a predetermined limit, the metal guide plate (53) is pushed to cut the circulation tube (5) to reduce the leakage of coolant and the probability of spontaneous combustion.

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

5. The vehicle charging pile energy storage power supply according to claim 4, characterized in that: The vertical section of the circulation pipe (5) is also bent into a rectangular zigzag structure, and forms a concave space with alternating openings, in which the conical suction cup (51) is integrally formed or the buffer spring (52) is fixedly embedded.

6. The vehicle charging pile energy storage power supply according to claim 4, characterized in that: The top surface of the L-shaped partition (6) is provided with a limiting groove (61); the top wall of the sealed housing (3) is fixedly welded with a limiting column (31) which is slidably embedded in the limiting groove (61) to limit the sliding position of the L-shaped partition (6); the top surface of the power source core (4) is fixedly installed with a positioning column (41) which is slidably embedded in the limiting groove (61) to limit the position of the power source core (4).

7. The vehicle charging pile energy storage power supply according to claim 4, characterized in that: The end panel (2) is mounted on an end of the base plate (1) close to the first circulation end tube (11), and a power connection terminal (21) for connecting to the device to be powered is mounted on its outer side surface; a power connection cell (62) plugged into the power core (4) for electrical connection is fixedly mounted on the L-shaped partition (6); the power connection terminal (21) and the power connection cell (62) are electrically connected via 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 move and disconnect the electrical connection between the power connection cell (62) and the power core (4).

8. The vehicle charging pile energy storage power supply according to claim 7, characterized in that: It also includes an elastic airbag (7) 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 the bottom thereof, so that when the power source 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 source core (4).

9. The vehicle charging pile energy storage power supply according to claim 8, characterized in that: A mounting through hole (65) is provided at the bottom of the L-shaped partition (6); an outlet end of the pressure safety valve (72) is embedded in the mounting through hole (65) to release the filling gas toward the power core (4); a through hole (71) is integrally formed on the elastic airbag (7) for mounting the power terminal (21); and a mounting notch (73) is integrally formed on the side of the elastic airbag (7) for mounting the shock absorber (64).

10. The vehicle charging pile energy storage power supply according to claim 1, characterized in that: The base plate (1), the end panel (2), the sealed shell (3) and the L-shaped partition (6) are made of aluminum alloy, stainless steel, glass fiber reinforced plastic, refractory ceramics or aluminum-plastic film materials, and the inner walls of the base plate (1), the end panel (2), the sealed shell (3) and the L-shaped partition (6) are all adhered with a flame retardant layer and filled with flame retardant gas.

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