Megawatt super-power liquid cooling charging seat

Abstract

The invention provides a megawatt super-power liquid cooling charging seat, which comprises a charging seat main body and a liquid cooling assembly, two power terminals are installed in the charging seat main body, and a first power conversion terminal is connected with a cable; the liquid cooling assembly comprises a heat conduction box, a first liquid cooling pipe and a second liquid cooling pipe, the heat conduction box is in contact with the end face of the power terminal, the first liquid cooling pipe is in direct contact with a cable core of one cable, and the second liquid cooling pipe is in direct contact with a cable core of the other cable; the first liquid cooling pipe and the second liquid cooling pipe are communicated through the heat conduction box to form a circulation loop of cooling liquid. The heat conduction box is in direct contact with the end face of the power terminal, the liquid cooling pipes are directly attached to the wire core, the first liquid cooling pipe, the heat conduction box and the second liquid cooling pipe are communicated in sequence to form a closed cooling loop, cooling liquid can circulate continuously, and the stable cooling function is achieved. Therefore, the technical problem that heat generated in the high-current transmission process of the megawatt-level power charging base cannot be efficiently dissipated is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging base heat dissipation, and particularly to a megawatt ultra-high power liquid-cooled charging base. Background Art

[0002] With the development of new energy vehicles, especially electric heavy trucks, electric mining trucks, electric ships and electric aircraft, the demand for high-power fast charging systems is increasing day by day. Traditional charging technologies have exposed many technical bottlenecks when facing the demand for megawatt-level power transmission. In particular, the heat generated during high-current transmission cannot be efficiently dissipated, which has become a key factor restricting charging efficiency and safety.

[0003] In the prior art, currently, ultra-high power charging equipment mainly consists of a liquid-cooling system at the pile end, liquid-cooling cables and a liquid-cooling gun to achieve an increase in the charging current-carrying power. However, for the power reception of the load-side charging base, only by increasing the cross-sectional area of the conductor can ultra-high power conduction be achieved. Conventional solutions use large copper bars, large copper buses, multiple cables, etc. to achieve high-power conduction between the charging base and the battery disconnection unit or battery pack. When the cross-sectional area of the conductor is insufficient, charging heat will cause abnormal temperature rise. And the method of increasing the cross-sectional area of the conductor to reserve temperature rise heat capacity will indirectly increase the consumption of copper materials and the weight of the vehicle. The over-temperature heat during the charging process will accelerate the oxidation of the conductor, increase the resistance of the conductor, and thus reduce the charging efficiency and energy utilization rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a megawatt ultra-high power liquid-cooled charging base, which solves the technical problem that the heat generated during the high-current transmission of a megawatt-level power charging base in the prior art cannot be efficiently dissipated.

[0005] To achieve this purpose, the present invention adopts the following technical solutions: A megawatt ultra-high power liquid-cooled charging base includes a charging base main body and a liquid-cooling component. Two power terminals are installed in the charging base main body. Each power terminal is connected to a first power transfer terminal. The first power transfer terminal is connected to a cable. One end of the cable away from the first power transfer terminal is connected to a second power transfer terminal for connecting to a load device. Wherein, the liquid-cooling component includes a heat conduction box, a first liquid-cooling pipe and a second liquid-cooling pipe. The heat conduction box is in contact with the end face of the power terminal. The first liquid-cooling pipe is in direct contact with the core of one of the cables. The second liquid-cooling pipe is in direct contact with the core of the other cable. The first liquid-cooling pipe and the second liquid-cooling pipe are connected through the heat conduction box to form a circulation loop for the coolant.

[0006] Optionally, the heat conduction box includes a box body and a connecting pipe. The box body and the connecting pipe are formed by sintering, and the end of the connecting pipe extends out of the box body. A first adapter is connected between one end of the connecting pipe and the first liquid cooling pipe, and a second adapter is connected between the other end of the connecting pipe and the second liquid cooling pipe.

[0007] Optionally, a detection device for covering the first adapter and the second adapter is installed in the charging base body. The detection device is used to detect signals of the coolant leaking at the first adapter and the second adapter.

[0008] Optionally, the detection device includes a storage box. A detection component, a first water absorption member, and a second water absorption member are installed in the storage box in a layered manner. The first water absorption member and the second water absorption member are both used to cover the first adapter and the second adapter, and one ends of the first liquid cooling pipe and the second liquid cooling pipe are embedded in the storage box. The detection component includes a detection board. The first water absorption member is lapped with the detection board. The detection board is used to form a liquid leakage detection signal after contacting the leaking coolant. Two signal lead-out wires are installed on the detection board, and the signal lead-out wires are used to transmit the liquid leakage detection signal of the detection board.

[0009] Optionally, the detection board is a PCB printed board. The detection board includes a substrate, and a first detection layer and a second detection layer are provided at intervals on the substrate. The first detection layer and the second detection layer are conducted through the coolant leaking in the liquid-cooled charging base and generate a liquid leakage detection signal. The first detection layer is electrically connected to one of the signal lead-out wires, and the second detection layer is electrically connected to the other signal lead-out wire.

[0010] Optionally, the first detection layer includes a plurality of first detection strips arranged in parallel. One ends of the plurality of first detection strips are all connected to a first connection strip, and the first connection strip is electrically connected to one of the signal lead-out wires. The second detection layer includes a plurality of second detection strips arranged in parallel. One ends of the plurality of second detection strips are all connected to a second connection strip, and the second connection strip is electrically connected to the other signal lead-out wire. The first detection strips and the second detection strips are arranged at intervals alternately, and the first detection strips and the first connection strip are both arranged at intervals with the second detection strips and the second connection strip to form a serpentine groove.

[0011] Optionally, the storage box includes a first storage shell, a folding connecting rib, and a second storage shell that are connected in sequence. The detection board is installed in the first storage shell, and the second storage shell is press-connected to the second water-absorbing member; The first storage shell and the second storage shell are detachably connected. The first storage shell is provided with a storage border with an integrally formed structure, and the storage border fences the leakage liquid stored in the first storage shell.

[0012] Optionally, the detection device has bolt holes, and the heat conduction box is provided with through holes corresponding to the bolt holes; The main body of the charging base is threadedly connected with a first fixing bolt that sequentially passes through the bolt hole and the through hole.

[0013] Optionally, a plurality of first threaded holes are provided on the end surface of the power terminal, and the heat conduction box is provided with first fastening bolts that are threadedly connected to the first threaded holes; A second threaded hole is provided on the side surface of the power terminal, and the first power transfer terminal is provided with a second fastening bolt that is threadedly connected to the second threaded hole.

[0014] Optionally, a placement hole for placing a thermistor is provided on the side surface of the power terminal, and the placement hole is adjacent to the second threaded hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: A megawatt ultra-high-power liquid-cooled charging base provided by the present invention directly contacts the end surface of the power terminal through a heat conduction box to quickly absorb heat; the liquid-cooled tube is directly attached to the wire core to achieve rapid heat conduction and liquid heat dissipation at the heat source part, significantly improving the cooling efficiency and avoiding cable overheating, oxidation of the power terminal, and safety hazards. By sequentially connecting the first liquid-cooled tube, the heat conduction box, and the second liquid-cooled tube to form a closed cooling circuit, the coolant can circulate continuously without relying on the external environment to achieve a stable cooling function. Since the liquid-cooled tube is directly in contact with the wire core, the structure of the cable is compact and more space-saving. Therefore, the present invention solves the technical problem of inefficient heat dissipation of the megawatt-level power charging base during high-current transmission. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0018] Figure 1 It is a front view structural schematic diagram of a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 2 It is a side view structural schematic diagram of a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 3 It is one of the partial explosion structural schematic diagrams of a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 4 It is the second partial explosion structural schematic diagram of a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 5 It is a structural schematic diagram of the charging station main body in a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the heat conduction box in a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 7 It is an explosion structural schematic diagram of the heat conduction box in a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the power terminal in a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 9 It is a three-dimensional structural schematic diagram of the detection device in a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 10 It is an explosion structural schematic diagram of the detection device in a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 11 It is a structural schematic diagram of the detection component in a megawatt ultra-high power liquid-cooled charging station disclosed in an embodiment of the present invention; Figure 12 It is Figure 11 The enlarged structural schematic diagram at position A of; Figure 13 It is Figure 11 The enlarged structural schematic diagram at position B of; Figure 14Schematic diagram of the open state of a storage box in a megawatt ultra-high power liquid-cooled charging seat disclosed in an embodiment of the present invention.

[0019] Illustration description: 10. Charging seat main body; 11. Power terminal; 111. First threaded hole; 112. Second threaded hole; 113. Placing hole; 20. Liquid cooling component; 21. Heat conduction box; 211. Box body; 2111. Perforation; 212. Connecting pipe; 22. First liquid cooling pipe; 23. Second liquid cooling pipe; 24. First adapter; 25. Second adapter; 30. First power transfer terminal; 40. Cable; 41. Core; 50. Second power transfer terminal; 60. Detection device; 61. Storage box; 611. First storage shell; 6111. Storage perimeter; 6112. First through hole; 6113. Second through hole; 6114. Card hole; 612. Folding connecting rib; 613. Second storage shell; 6131. Elastic buckle; 614. Bolt hole; 62. Detection component; 621. Detection board; 6211. Substrate; 6212. First detection strip; 6213. First connection strip; 6214. Second detection strip; 6215. Second connection strip; 622. Signal lead-out wire; 63. First water-absorbing part; 64. Second water-absorbing part; 70. First fastening bolt; 80. Second fastening bolt; 90. First fixing bolt. Detailed implementation manners

[0020] To make the invention objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present at the same time.

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0023] An embodiment of the present invention provides a megawatt ultra-high power liquid-cooled charging seat, as Figures 1 to 14 shown, which includes a charging seat main body 10 and a liquid-cooling component 20. Two power terminals 11 are installed in the charging seat main body 10. Each power terminal 11 is connected to a first power transfer terminal 30. The first power transfer terminal 30 is connected to a cable 40. One end of the cable 40 far from the first power transfer terminal 30 is connected to a second power transfer terminal 50 for connecting to a load device; Among them, the liquid-cooling component 20 includes a heat conduction box 21, a first liquid-cooling pipe 22 and a second liquid-cooling pipe 23. The heat conduction box 21 is in contact with the end face of the power terminal 11. The first liquid-cooling pipe 22 is in direct contact with the core 41 of one of the cables 40. The second liquid-cooling pipe 23 is in direct contact with the core 41 of the other cable 40. The first liquid-cooling pipe 22 and the second liquid-cooling pipe 23 are connected through the heat conduction box 21 to form a circulation loop for the coolant. In this embodiment, the cores 41 of the cables 40 are fixed to the first power transfer terminal 30 and the second power transfer terminal 50 by ultrasonic welding or by crimping with copper tube terminals.

[0024] It should be noted that for a megawatt ultra-high power liquid-cooled charging seat provided by the present invention, the heat conduction box 21 is in direct contact with the end face of the power terminal 11 to quickly absorb heat; the liquid-cooling pipes are directly attached to the cores 41 to achieve rapid heat conduction and liquid heat dissipation at the heat source part, significantly improving the cooling efficiency and avoiding overheating of the cable, oxidation of the power terminal 11 and potential safety hazards. Through the sequential connection of the first liquid-cooling pipe 22, the heat conduction box 21 and the second liquid-cooling pipe 23, a closed cooling loop is formed, and the coolant can circulate continuously without relying on the external environment to achieve a stable cooling function. Since the liquid-cooling pipes are in direct contact with the cores 41, the structure of the cable 40 is compact and more space-saving. Therefore, the present invention solves the technical problem of inefficient heat dissipation of the heat generated during high-current transmission in a megawatt-level power charging seat.

[0025] As Figure 3 、 Figure 6 and Figure 7 shown, the heat conduction box 21 includes a box body 211 and a connecting pipe 212. The box body 211 and the connecting pipe 212 are formed by sintering. The end of the connecting pipe 212 extends out of the box body 211; A first adapter 24 is connected between one end of the connecting pipe 212 and the first liquid-cooling pipe 22, and a second adapter 25 is connected between the other end of the connecting pipe 212 and the second liquid-cooling pipe 23. Specifically, the connecting pipe 212 is a metal pipe, and the heat conduction box 21 is fired by sintering the connecting pipe 212 and ceramic powder.

[0026] It should be noted that by adopting the connecting pipe 212 and the ceramic powder sintering forming process, the heat conduction box 21 has the characteristics of both high mechanical strength and high thermal conductivity; the sintered structure has a dense and uniform crystal arrangement, effectively improving the heat transfer efficiency from the power terminal 11 to the coolant, enhancing the heat dissipation ability of the heat conduction box 21 under high-power working conditions, reducing the risk of local hot spots, and enhancing the overall stability. Both ends of the connecting pipe 212 are respectively connected to the first liquid cooling pipe 22 through the first adapter 24 and to the second liquid cooling pipe 23 through the second adapter 25, which not only ensures the coherence of the coolant passage but also provides convenience for later disassembly, maintenance, and module replacement. Since the end of the connecting pipe 212 extends out of the box body 211, it leaves space for the layout of the subsequent liquid cooling pipes and interface operations, reduces interference between structures, and facilitates embedding the heat conduction box 21 into a compact device or a complex wiring environment, improving the overall machine integration.

[0027] As Figures 1 to 4 shown, a detection device 60 for covering the first adapter 24 and the second adapter 25 is installed in the charging seat main body 10, and the detection device 60 is used to detect signals of the coolant leaking at the first adapter 24 and the second adapter 25.

[0028] It should be noted that the detection device 60 can continuously monitor whether coolant leakage occurs at the first adapter 24 and the second adapter 25 in real time. When the coolant leaks, the detection device 60 emits a signal for timely warning. Through early leakage detection, it is possible to prevent damage to the charging device caused by cooling system failures and ensure the stability and safety of the charging process.

[0029] As Figure 3 、 Figure 9 and Figure 10 shown, the detection device 60 includes a storage box 61. A detection component 62, a first water-absorbing member 63, and a second water-absorbing member 64 are installed in the storage box 61 in a layered distribution. Both the first water-absorbing member 63 and the second water-absorbing member 64 are used to cover the first adapter 24 and the second adapter 25, and one end of the first liquid cooling pipe 22 and the second liquid cooling pipe 23 is embedded in the storage box 61; The detection component 62 includes a detection board 621. The first water-absorbing member 63 overlaps with the detection board 621. The detection board 621 is used to form a liquid leakage detection signal after contacting the leaked coolant; two signal lead-out wires 622 are installed on the detection board 621, and the signal lead-out wires 622 are used to transmit the liquid leakage detection signal of the detection board 621.

[0030] It should be noted that the first water-absorbing member 63 and the second water-absorbing member 64 wrap the first adapter 24 and the second adapter 25. When coolant leaks in the charging base body 10, through the siphon effect of the first water-absorbing member 63 and the second water-absorbing member 64, the coolant is guided to the detection board 621, and through the transmission of the signal lead 622, the liquid leakage detection signal is transmitted to the upper control system to achieve leakage warning. Through the use and cooperation of the first water-absorbing member 63, the second water-absorbing member 64 and the storage box 61, multi-level protection is provided for the charging base, reducing the direct impact of coolant leakage on the system. At the same time, when leakage occurs, the leaked liquid can be wrapped and blocked in time to prevent diffusion, further enhancing the safety of the device.

[0031] As Figures 9 to 11 shown, the detection board 621 is a PCB printed board. The detection board 621 includes a substrate 6211. A first detection layer and a second detection layer are provided at intervals on the substrate 6211. The first detection layer and the second detection layer are conducted through the coolant leaking in the liquid-cooled charging base and generate a liquid leakage detection signal; The first detection layer is electrically connected to one of the signal leads 622, and the second detection layer is electrically connected to the other signal lead 622. In the specific implementation process, the first detection layer and the second detection layer are arranged in an interleaved manner.

[0032] It should be noted that through the interleaved arrangement of the first detection layer and the second detection layer, it can be conducted with the coolant leaking in the liquid-cooled charging base to form an electrical signal, which can monitor whether the coolant leaks in real time, greatly improving the accuracy and response speed of liquid leakage detection, ensuring that the system can detect coolant leakage in time, and avoiding system overheating or failure. The electrical connection between the signal lead 622 and the detection layer enables the liquid leakage detection signal to be efficiently transmitted to other monitoring systems or trigger safety warnings, ensuring the safety of the charging base and avoiding dangers such as electrical failures or fires caused by liquid leakage. The detection component 62 provides a modular function, which is convenient for later maintenance and replacement. Through different detection layer interval layouts, it can be flexibly adjusted to adapt to different application requirements, further improving the maintainability and adaptability of the system.

[0033] As Figures 11 to 13 shown, the first detection layer includes a plurality of first detection strips 6212 arranged in parallel. One ends of the plurality of first detection strips 6212 are all connected to the first connection strip 6213, and the first connection strip 6213 is electrically connected to one of the signal leads 622; The second detection layer includes a plurality of second detection strips 6214 arranged in parallel. One ends of the plurality of second detection strips 6214 are all connected to the second connection strip 6215, and the second connection strip 6215 is electrically connected to the other signal lead 622; The first detection strip 6212 and the second detection strip 6214 are arranged alternately at intervals. Both the first detection strip 6212 and the first connection strip 6213 are arranged at intervals from the second detection strip 6214 and the second connection strip 6215 to form a serpentine groove.

[0034] It should be noted that the first detection layer and the second detection layer conduct current through the leakage of the coolant and generate a liquid leakage detection signal. Since the first detection strip 6212 and the second detection strip 6214 are arranged alternately, forming a serpentine groove structure, the liquid leakage signal can be sensed on a larger surface area, improving the sensitivity and accuracy of the liquid leakage detection. The alternately arranged first detection strip 6212 and second detection strip 6214 form a serpentine groove, which not only optimizes the space utilization of the circuit design, but also improves the cooling efficiency of the liquid cooling system, helps the fluidity of the liquid, and further improves the heat dissipation and liquid leakage detection effects of the system.

[0035] As Figures 9 to 14 shown, the storage box 61 includes a first storage shell 611, a folding connecting rib 612, and a second storage shell 613 connected in sequence. The detection board 621 is installed in the first storage shell 611, and the second storage shell 613 is crimped with the second water-absorbing member 64; The first storage shell 611 and the second storage shell 613 are detachably connected. The first storage shell 611 is provided with a storage border 6111 of an integrally formed structure, and the storage border 6111 fences the leaked liquid stored in the first storage shell 611. Specifically, the first storage shell 611 is provided with a first through hole 6112 and a second through hole 6113. The first through hole 6112 is used for the lead pins of the substrate 6211 to pass through, and the second through hole 6113 is used for the signal lead-out wire 622 to pass through. Two card holes 6114 are formed on the first storage shell 611, and the second storage shell 613 is provided with a snap button 6131 that is snap-fitted with the card holes 6114.

[0036] It should be noted that the first storage case 611 is provided with an integrally formed storage border 6111. The storage border 6111 can effectively block the leakage liquid in the storage box 61, prevent the coolant from leaking to other parts, and protect other electrical components from the influence of the leakage liquid. Since the first storage case 611 and the second storage case 613 are detachably connected, it is convenient to disassemble them easily during maintenance or replacement, reducing the operation complexity, enabling users to clean, inspect or replace the detection device 60 conveniently, and improving the maintainability of the product. By providing the first through hole 6112 and the second through hole 6113 to respectively accommodate the connection pins of the substrate 6211 and the signal lead-out wire 622 to pass through, the convenience of electrical connection and the compactness of the layout are realized, effectively saving space, while ensuring the smooth passing of the signal lead-out wire 622 and the connection pins, and reducing potential electromagnetic interference. Through the cooperation of the card hole 6114 and the snap button 6131, the firm connection between the first storage case 611 and the second storage case 613 of the storage box 61 is ensured, avoiding loosening or falling off caused by vibration or external force, and improving the overall stability and anti-interference ability of the system.

[0037] As Figures 6 to 14 shown, the detection device 60 has bolt holes 614, and the heat conduction box 21 is provided with through holes 2111 corresponding to the bolt holes 614; the charging base body 10 is threadedly connected with a first fixing bolt 90 that sequentially passes through the bolt holes 614 and the through holes 2111. Specifically, bolt holes 614 are provided on both the first storage case 611 and the second storage case 613. In the specific implementation process, the charging base can achieve effective cooling in the high-power working state, and at the same time, the state of the coolant is monitored in real time through the detection device 60. Once leakage occurs, it can be detected in time and a warning signal is issued to avoid damage to the equipment caused by the failure of the cooling system.

[0038] It should be noted that by using the first fixing bolt 90 to fix the detection device 60 and the heat conduction box 21 on the charging base body 10, the connection between each component is ensured to be more stable, preventing the components from loosening due to vibration or other factors during use, and improving the reliability of the equipment and the stability of long-term use. Since the first fixing bolt 90 plays a fixing role, it not only enables the detection device 60 to closely cooperate with the heat conduction box 21 to ensure that problems such as possible coolant leakage can be accurately detected in the high-current working state, but also can prevent the detection device 60 from shifting or failing due to unstable structure during use.

[0039] As Figures 3 to 8 shown, a plurality of first threaded holes 111 are provided on the end face of the power terminal 11, and the heat conduction box 21 is provided with first fastening bolts 70 that are threadedly connected with the first threaded holes 111; Among them, a second threaded hole 112 is provided on the side surface of the power terminal 11, and a second fastening bolt 80 that is threadedly connected to the second threaded hole 112 is passed through the first power adapter terminal 30.

[0040] It should be noted that the heat conduction box 21 is firmly installed on the end surface of the power terminal 11 through the first fastening bolt 70. The end surface of the power terminal 11 can be in firm contact with the heat conduction box 21, ensuring effective heat conduction to the heat conduction box 21. This tight connection method helps the power terminal 11 dissipate heat quickly, thereby avoiding overheating phenomena generated during high-current transmission. The power terminal 11 and the first power adapter terminal 30 are firmly connected through the second fastening bolt 80, making the structure of the charging base more stable, further enhancing the reliability and safety of the system; not only improving the heat dissipation efficiency, but also reducing the risk of electrical failures or fires caused by loose connections.

[0041] As Figures 3 to 8 shown, a placement hole 113 for placing a thermistor is provided on the side surface of the power terminal 11, and the placement hole 113 is adjacent to the second threaded hole 112. By arranging the placement hole 113 and the threaded hole adjacent to each other, electromagnetic interference or heat interference between different components is avoided, achieving a reasonable space layout, which is beneficial to the good contact between the power terminal 11 and the sensor, ensuring the accuracy of data, and improving the overall stability and detection accuracy of the charging device.

[0042] It should be noted that the placement hole 113 is designed specifically for the thermistor and can monitor the temperature of the power terminal 11 in real time. The thermistor can provide feedback when the temperature is too high, triggering the overheat protection mechanism to prevent electrical failures or fire hazards caused by overheating, effectively ensuring the controllability of the temperature during the charging process and improving the safety of the charging device. Since the placement hole 113 is adjacent to the second threaded hole 112, the compact layout makes the entire structure of the charging base more efficient and space-saving. Temperature detection can be carried out in a limited space without the need for additional space or complex wiring, improving the space utilization rate of the charging base and ensuring the compactness and integration of the overall structure.

[0043] Working principle: When the charging base is working, the power terminal 11 generates heat under high current and long-term operation. Since the heat conduction box 21 is in direct contact with the end surface of the power terminal 11, the heat generated by the power terminal 11 is guided to the connecting pipe 212; the first liquid cooling pipe 22, the connecting pipe 212, and the second liquid cooling pipe 23 form a coolant circuit, quickly taking away the heat on the connecting pipe 212, achieving efficient heat dissipation; The first adapter 24 and the second adapter 25 are wrapped by the first water-absorbing member 63 and the second water-absorbing member 64. When coolant leaks at the first adapter 24 and the second adapter 25, the first water-absorbing member 63 and the second water-absorbing member 64 can siphon the coolant and guide the coolant to the detection board 621. The coolant contacts the first detection strip 6212 and the second detection strip 6214, thereby causing the detection board 621 to conduct and generating a liquid leakage detection signal. Then, through the signal transmission of the signal lead-out wire 622, the liquid leakage detection signal can be transmitted to the upper control system, realizing the detection and warning of coolant leakage.

[0044] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A megawatt ultra-high power liquid-cooled charging station, characterized in that: The device comprises a charging seat body (10) and a liquid cooling assembly (20), wherein two power terminals (11) are installed in the charging seat body (10), each of the power terminals (11) is connected to a first power transfer terminal (30), the first power transfer terminal (30) is connected to a cable (40), and the end of the cable (40) away from the first power transfer terminal (30) is connected to a second power transfer terminal (50) for connecting to a load device; The liquid cooling assembly (20) comprises a heat-conducting box (21), a first liquid cooling tube (22) and a second liquid cooling tube (23); the heat-conducting box (21) contacts the end surface of the power terminal (11); the first liquid cooling tube (22) directly contacts the wire core (41) of one of the cables (40); and the second liquid cooling tube (23) directly contacts the wire core (41) of another of the cables (40); the first liquid cooling tube (22) and the second liquid cooling tube (23) are connected via the heat-conducting box (21) to form a circulation loop for the cooling liquid.

2. The megawatt ultra-high power liquid-cooled charging station according to claim 1, characterized in that: The heat-conducting box (21) comprises a box body (211) and a connecting tube (212); the box body (211) and the connecting tube (212) are formed by sintering, and an end of the connecting tube (212) extends out of the box body (211); A first adapter (24) is connected between one end of the connecting tube (212) and the first liquid cooling tube (22), and a second adapter (25) is connected between the other end of the connecting tube (212) and the second liquid cooling tube (23).

3. The megawatt ultra-high power liquid-cooled charging station according to claim 2, characterized in that: A detection device (60) for covering the first adapter (24) and the second adapter (25) is installed in the charging seat body (10), and the detection device (60) is used to perform signal detection on coolant leakage at the first adapter (24) and the second adapter (25).

4. The megawatt ultra-high power liquid-cooled charging station according to claim 3 is characterized in that: The detection device (60) comprises a storage box (61), wherein a detection component (62), a first water absorbent member (63) and a second water absorbent member (64) distributed in layers are installed in the storage box (61), wherein the first water absorbent member (63) and the second water absorbent member (64) are both used to cover the first adapter (24) and the second adapter (25), and one end of the first liquid cooling tube (22) and the second liquid cooling tube (23) are embedded in the storage box (61); The detection assembly (62) comprises a detection plate (621), the first water absorbent member (63) being overlapped with the detection plate (621), the detection plate (621) being used to generate a liquid leakage detection signal after contacting leaked coolant; two signal lead wires (622) are mounted on the detection plate (621), the signal lead wires (622) being used to transmit the liquid leakage detection signal of the detection plate (621).

5. The megawatt ultra-high power liquid-cooled charging station according to claim 4, characterized in that: The detection board (621) is a PCB printed board, and the detection board (621) comprises a base plate (6211). A first detection layer and a second detection layer are provided in a gap on the base plate (6211). The first detection layer and the second detection layer are connected through the cooling liquid leaking from the liquid-cooled charging seat, and a leakage detection signal is generated. The first detection layer is electrically connected to one of the signal lead-out lines (622), and the second detection layer is electrically connected to another of the signal lead-out lines (622).

6. The megawatt ultra-high power liquid-cooled charging station according to claim 5, characterized in that: The first detection layer comprises a plurality of first detection strips (6212) arranged in parallel, one end of each of the plurality of first detection strips (6212) is connected to a first connection strip (6213), and the first connection strip (6213) is electrically connected to one of the signal lead-out wires (622); The second detection layer comprises a plurality of second detection strips (6214) arranged in parallel, one end of each of the plurality of second detection strips (6214) is connected to a second connection strip (6215), and the second connection strip (6215) is electrically connected to another signal lead-out line (622); The first detection strips (6212) and the second detection strips (6214) are alternately arranged with gaps, and the first detection strips (6212) and the first connecting strips (6213) are both arranged with gaps with the second detection strips (6214) and the second connecting strips (6215) to form a serpentine groove.

7. The megawatt ultra-high power liquid-cooled charging station according to claim 4, characterized in that: The storage box (61) comprises a first storage shell (611), a folding connecting rib (612), and a second storage shell (613) which are connected in sequence, the detection plate (621) is installed in the first storage shell (611), and the second storage shell (613) is crimped to the second water absorbing member (64); The first storage shell (611) is detachably connected to the second storage shell (613); the first storage shell (611) is provided with a storage edge (6111) of an integrally formed structure; the storage edge (6111) is used to enclose leaked liquid stored in the first storage shell (611).

8. The megawatt ultra-high power liquid-cooled charging station according to any one of claims 3 to 7, characterized in that: The detection device (60) has a bolt hole (614), and the heat conduction box (21) is provided with a through hole (2111) corresponding to the bolt hole (614); The charging seat body (10) is threadedly connected with a first fixing bolt (90) which passes through the bolt hole (614) and the through hole (2111) in sequence.

9. The megawatt ultra-high power liquid-cooled charging station according to any one of claims 1 to 7, characterized in that: A plurality of first threaded holes (111) are provided on the end surface of the power terminal (11), and a first fastening bolt (70) threadedly connected to the first threaded hole (111) is passed through the heat conduction box (21); A second threaded hole (112) is provided on the side surface of the power terminal (11), and a second fastening bolt (80) threadedly connected to the second threaded hole (112) is passed through the first power transfer terminal (30).

10. The megawatt ultra-high power liquid-cooled charging station according to claim 9, characterized in that: A placement hole (113) for placing a thermistor is provided on a side surface of the power terminal (11), and the placement hole (113) is arranged adjacent to the second threaded hole (112).

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