Mcs megawatt liquid cooling supercharging connector and liquid cooling system thereof

Abstract

The application relates to the technical field of high-power charging equipment, and discloses an MCS megawatt liquid cooling supercharging connector which comprises an MCS gun shell main body and a cable, a DC+ gun needle assembly and a DC-gun needle assembly are arranged in the MCS gun shell main body, two groups of DC+ liquid cooling cables and two groups of DC-liquid cooling cables are arranged in the cable, and each group of liquid cooling cables comprises a liquid cooling pipeline and a power line; cooling liquid channels are formed between the outer wall of the power line and the inner wall of the liquid cooling pipeline, the cooling liquid channel of one group of liquid cooling cables is connected with the cooling liquid channel of the other group of liquid cooling cables through an overflow flow channel; and a liquid cooling system comprises the MCS megawatt liquid cooling supercharging connector, a first heat exchanger, a second heat exchanger, a liquid storage tank, a first circulating pump and a second circulating pump, and constitutes a liquid cooling circulating loop. The MCS megawatt liquid cooling supercharging connector and the liquid cooling system have the advantages of high cooling efficiency and longer high-power charging maintenance time.

Description

Technical Field

[0001] This invention relates to the field of high-power charging equipment technology, specifically to an MCS megawatt liquid-cooled supercharger connector and its liquid cooling system. Background Technology

[0002] As the global climate change problem becomes increasingly severe, countries have set carbon neutrality goals, and energy transition has become a global consensus. As one of the main sources of carbon emissions, the electrification process of the transportation sector has attracted much attention. According to data from the International Energy Agency (IEA), global electric vehicle sales reached 14 million units in 2024, of which commercial vehicles accounted for about 15%. It is estimated that by 2030, global sales of electric commercial vehicles will exceed 3 million units.

[0003] Against this backdrop, the large-scale application of electric heavy trucks, buses and other large commercial vehicles has become an inevitable trend. However, traditional charging technologies are limited by power density and thermal management capabilities, making it difficult to meet the rapid energy replenishment needs of commercial vehicles. For example, an electric truck with a 600kWh battery would need more than 2 hours to be fully charged if a 350kW charging pile is used, which seriously restricts operational efficiency.

[0004] North America is a major birthplace of MCS charging gun technology. In 2018, CharIN (Charging Interface Initiative) launched the Commercial Vehicle Heavy-Duty Charging Working Group at its first CharIN North America conference, officially initiating the research and development of MCS (Megawatt Charging System). This initiative aims to provide standardized high-power charging solutions for heavy-duty vehicles such as electric trucks and buses. In 2021, CharIN released MCS connector version 3.2, supporting a maximum power of 3.75MW and compatible with the CCS protocol. In January 2023, CharIN officially launched the Megawatt Charging System (MCS) DC fast charging connector, marking the entry of MCS technology into the commercial application stage. This connector has a maximum design current of 3000A, a maximum voltage tolerance of 1250V, and can withstand a peak power of 3750kW, an order of magnitude higher than the 350-500kW of the CCS Combo connector. From a technical standpoint, the MCS charging gun achieves a maximum power output of 3.75 megawatts through high voltage, high current, and liquid cooling technology, fully charging large electric vehicles in 15-30 minutes, with a charging efficiency more than 10 times that of traditional charging systems.

[0005] Existing technology has the following drawbacks: At a normal temperature of 23℃, commercially available MCS liquid-cooled charging guns can only achieve a power output of 1350A / 1500V DC and 2.025MW for extended periods, and 1500A / 1500V DC and 2.250MW for short periods, but this can only be maintained for about 5 minutes. The extended current of 1350A / 1500V DC does not fully utilize the advantages of MCS high-power charging connectors. Most commercially available MCS liquid-cooled charging connectors use copper-clad liquid (liquid-cooled cable structure code II) to dissipate heat from the conductors through a cooling fluid flowing inside a heat pipe. This method is ineffective, as a large amount of heat inside the bare copper wires cannot be dissipated through the cooling fluid, resulting in high surface temperatures for the liquid-cooled cable and making it impossible to maintain high-power charging for extended periods. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an MCS megawatt liquid-cooled supercharger connector and its liquid cooling system with high cooling efficiency and longer high-power charging time.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An MCS megawatt liquid-cooled supercharger connector includes an MCS gun housing body and a cable. The MCS gun housing body is provided with a DC+ gun needle assembly and a DC- gun needle assembly. The cable is provided with two sets of DC+ liquid-cooled cables and two sets of DC- liquid-cooled cables. The two sets of DC+ liquid-cooled cables are connected in parallel to the DC+ gun needle assembly, and the two sets of DC- liquid-cooled cables are connected in parallel to the DC- gun needle assembly. The DC+ liquid-cooled cable and the DC- liquid-cooled cable have the same structure, both including a liquid-cooled pipe and a power line. The power line passes through the liquid-cooled pipe, and a coolant channel is formed between the outer wall of the power line and the inner wall of the liquid-cooled pipe. The DC+ needle assembly and the DC- needle assembly have the same structure and are both provided with flow channels. On the DC+ needle assembly, one set of coolant channels of the DC+ liquid-cooled cable is connected to the coolant channels of another set of DC+ liquid-cooled cables through the flow channels. On the DC-gun needle assembly, the coolant channels of one set of DC-liquid-cooled cables are connected to the coolant channels of another set of DC-liquid-cooled cables through a flow channel.

[0008] As a further improvement to the above technical solution: Both the DC+ needle assembly and the DC- needle assembly include a needle terminal, a first cable connection terminal and a second cable connection terminal. The first cable connection terminal has a first flow channel, the needle terminal has a second flow channel, and the second cable connection terminal has a third flow channel. The first flow channel, the second flow channel and the third flow channel are connected in sequence to form the flow channel.

[0009] The gun needle terminal includes a connecting block, a power gun needle, a gun needle positioning pin, and a positioning gun needle insulator. The second flow channel is located inside the connecting block. The first cable connection terminal and the second cable connection terminal are fixedly connected to one end of the connecting block. The power gun needle is fixedly connected to the other end of the connecting block. The gun needle positioning pin is fixedly connected inside the power gun needle. The positioning gun needle insulator is fixedly connected to the gun needle positioning pin.

[0010] One end of the connecting block is provided with a first connecting hole and a second connecting hole that communicate with the second flow channel. The first cable connecting terminal is threaded into the first connecting hole, and the second cable connecting terminal is threaded into the second connecting hole. The other end of the connecting block is provided with a third connecting hole. The power gun needle is threaded into the third connecting hole. The power gun needle is provided with a fourth connecting hole. The gun needle positioning needle is threaded into the fourth connecting hole. The positioning gun needle insulator is snapped onto the gun needle positioning needle.

[0011] The MCS gun housing also includes a PE port, a CE port, an ID port, a PHY1 port, and a PHY2 port. The cable also includes two sets of PE grounding cables, a CE signal wire, an ID signal wire, a PHY1 signal wire, and a PHY2 signal wire. The PE grounding cable is connected to the PE port, the CE signal wire is connected to the CE port, the ID signal wire is connected to the ID port, the PHY1 signal wire is connected to the PHY1 port, and the PHY2 signal wire is connected to the PHY2 port.

[0012] The PE grounding cable includes a PE wire insulation layer and a PE wire conductor, with the PE wire conductor passing through the PE wire insulation layer; the CE signal wire, the ID signal wire, the PHY1 signal wire, and the PHY2 signal wire are all passing through the first signal wire shielding layer.

[0013] The cable also contains an A+ auxiliary power conductor and an A- auxiliary power conductor that are connected to the main body of the MCS gun housing. The A+ auxiliary power conductor and the A- auxiliary power conductor are both run through the shielding layer of the auxiliary power line.

[0014] The cable also contains TP1+ signal wire, TP2+ signal wire, TP1- signal wire and TP2- signal wire connected to the main body of the MCS gun housing. The TP1+ signal wire, the TP2+ signal wire, the TP1- signal wire and the TP2- signal wire are all run through the second signal line shielding layer.

[0015] The main body of the MCS gun shell is a one-piece molded structure.

[0016] A liquid cooling system includes the aforementioned MCS megawatt liquid-cooled supercharge connector, a first heat exchanger, a second heat exchanger, a liquid storage tank, a first circulating pump, and a second circulating pump; On the DC+ gun needle assembly, a set of coolant channels of the DC+ liquid-cooled cable, the first heat exchanger, the liquid storage tank, the first circulating pump, another set of coolant channels of the DC+ liquid-cooled cable, and the flow channel inside the DC+ gun needle assembly are sequentially connected to form a DC+ liquid-cooled circulation loop. On the DC-gun needle assembly, a set of coolant channels of the DC-liquid-cooled cable, the second heat exchanger, the liquid storage tank, the second circulation pump, another set of coolant channels of the DC-liquid-cooled cable, and the flow channel inside the DC-gun needle assembly are sequentially connected to form a DC-liquid-cooled circulation loop.

[0017] Compared with the prior art, the advantages of the present invention are as follows: I. The MCS megawatt liquid-cooled supercharger connector of the present invention is provided with two sets of DC+ liquid-cooled cables and two sets of DC- liquid-cooled cables. The two sets of DC+ liquid-cooled cables are connected in parallel to the DC+ nozzle assembly, and the two sets of DC- liquid-cooled cables are connected in parallel to the DC- nozzle assembly. The ends of the DC+ and DC- liquid-cooled cables are connected to the charging pile. Current flows in from the ends of the liquid-cooled cables, passes through the power lines and the nozzle assembly to charge the vehicle. Both the DC+ and DC- nozzle assemblies are provided with flow channels. One set of DC+ liquid-cooled cables ( The coolant channel of the DC-liquid-cooled cable (or DC-liquid-cooled cable) is connected to the coolant channel of another DC+ liquid-cooled cable (or DC-liquid-cooled cable) through a flow channel. The liquid-cooled cable adopts a "liquid-copper-clad" structure in which the outer wall of the power line and the inner wall of the liquid-cooled pipe are spaced apart to form a coolant channel, replacing the "copper-clad liquid" structure in the existing technology. The power line is immersed in the coolant for cooling, which has high cooling efficiency and allows the charging current to be greatly increased. The charging power can be increased from only 5 minutes of 1500A / 1500V DC to more than 60 minutes. The high-power charging time is longer and the charging time is greatly shortened.

[0018] II. The liquid cooling system of the present invention includes an MCS megawatt liquid-cooled supercharger connector. During the circulating cooling process, the coolant is pumped by the first circulating pump (or the second circulating pump) to the coolant channel of a set of DC+ liquid-cooled cables (or DC-liquid-cooled cables) to perform convective heat exchange on the power lines. After passing through the flow channel of the DC+ needle assembly (or DC-needle assembly), it enters the coolant channel of another set of DC+ liquid-cooled cables (or DC-liquid-cooled cables) to perform convective heat exchange on the power lines. The high-temperature coolant after heat exchange is transported to the first heat exchanger (or the second heat exchanger) for cooling and then transported to the inside of the storage tank. The first circulating pump (or the second circulating pump) continues to pump the cooled coolant to the DC+ liquid-cooled cables (or DC-liquid-cooled cables) to form a liquid-cooled circulation loop, which makes the cooling efficiency of the coolant high, thereby improving the cooling efficiency of the power line 5 and ensuring that the high-power charging time of the MCS megawatt liquid-cooled supercharger connector is longer. Attached Figure Description

[0019] Figure 1 This is a side view of the MCS megawatt liquid-cooled supercharger connector.

[0020] Figure 2 This is a frontal view of the main body of the MCS gun casing.

[0021] Figure 3 This is a schematic diagram of the DC+ needle assembly and the DC- needle assembly.

[0022] Figure 4 This is a cross-sectional structural diagram of the DC+ gun needle assembly.

[0023] Figure 5 This is a cross-sectional structural diagram of the DC+ gun needle assembly in its disassembled state.

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the cable, A.

[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of a DC+ liquid-cooled cable.

[0026] Figure 8 This is a schematic diagram of the cross-sectional structure of the cable (B).

[0027] Figure 9 This is a schematic diagram of the cross-sectional structure of the PE grounding cable and the signal conductor.

[0028] Figure 10 This is a schematic diagram of the liquid cooling system connections.

[0029] Legend: 100. MCS gun housing body; 200. Cable; 300. DC + gun needle assembly; 400. DC - gun needle assembly; 500. DC + liquid cooling cable; 600. DC - liquid cooling cable; 1. Gun needle terminal; 101. Second flow channel; 102. Connecting block; 1021. First connecting hole; 1022. Second connecting hole; 1023. Third connecting hole; 103. Power gun needle; 1031. Fourth connecting hole; 104. Gun needle positioning pin; 105. Positioning gun needle insulator; 2. First cable connection terminal; 201. First flow channel; 3. Second cable connection terminal; 301. Third flow channel; 4. Liquid cooling pipe; 5. Power line; 6. Coolant channel; 7. PE port; 8. CE port; 9. ID port; 10. PHY1 port; 11. PHY2 port; 12. PE grounding cable; 201. PE wire insulation layer; 1202. PE wire conductor; 13. CE signal wire; 14. ID signal wire; 15. PHY1 signal wire; 16. PHY2 signal wire; 17. First signal wire shielding layer; 18. A+ auxiliary power supply wire; 19. A- auxiliary power supply wire; 20. Auxiliary power supply wire shielding layer; 21. TP1+ signal wire; 22. TP2+ signal wire; 23. TP1- signal wire; 24. TP2- signal wire; 25. Second signal wire shielding layer; 26. First heat exchanger; 27. Second heat exchanger; 28. Liquid storage tank; 29. ​​First circulation pump; 30. Second circulation pump. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0031] like Figures 1 to 9As shown, the MCS megawatt liquid-cooled supercharger connector of this embodiment includes an MCS gun housing body 100 and a cable 200. The MCS gun housing body 100 contains a DC+ gun needle assembly 300 and a DC- gun needle assembly 400. The cable 200 contains two sets of DC+ liquid-cooled cables 500 and two sets of DC- liquid-cooled cables 600. The two sets of DC+ liquid-cooled cables 500 are connected in parallel to the DC+ gun needle assembly 300, and the two sets of DC- liquid-cooled cables 600 are connected in parallel to the DC- gun needle assembly 400. The DC+ liquid-cooled cables 500 and DC- liquid-cooled cables 600 have the same structure, both including a liquid-cooled pipe 4 and a power line 5. The power line 5 is inserted into the liquid cooling pipe 4, and a coolant channel 6 is formed between the outer wall of the power line 5 and the inner wall of the liquid cooling pipe 4. The DC+ needle assembly 300 and the DC- needle assembly 400 have the same structure and are both provided with flow channels. On the DC+ needle assembly 300, the coolant channel 6 of one set of DC+ liquid cooling cables 500 is connected to the coolant channel 6 of another set of DC+ liquid cooling cables 500 through the flow channels. On the DC- needle assembly 400, the coolant channel 6 of one set of DC- liquid cooling cables 600 is connected to the coolant channel 6 of another set of DC- liquid cooling cables 600 through the flow channels. The MCS megawatt liquid-cooled supercharger connector is equipped with two sets of DC+ liquid-cooled cables 500 and two sets of DC- liquid-cooled cables 600. The two sets of DC+ liquid-cooled cables 500 are connected in parallel to the DC+ nozzle assembly 300, and the two sets of DC- liquid-cooled cables 600 are connected in parallel to the DC- nozzle assembly 400. The ends of the DC+ liquid-cooled cables 500 and DC- liquid-cooled cables 600 are connected to the charging pile. Current flows from the ends of the liquid-cooled cables, passes through the power line 5 and the nozzle assembly to charge the vehicle. Both the DC+ nozzle assembly 300 and the DC- nozzle assembly 400 have flow channels. The coolant channel 6 of the cold cable 500 (or DC-liquid-cooled cable 600) is connected to the coolant channel 6 of another set of DC+ liquid-cooled cables 500 (or DC-liquid-cooled cables 600) through a flow channel. The liquid-cooled cable adopts a "liquid-copper-clad" structure in which the outer wall of the power line 5 and the inner wall of the liquid-cooled pipe 4 are spaced apart to form a coolant channel 6, which replaces the "copper-clad liquid" structure in the prior art. The power line 5 is immersed in the coolant for cooling, which has high cooling efficiency and allows the charging current to be greatly increased. The charging power is increased from only being able to maintain 1500A / 1500V DC for 5 minutes to being maintained for more than 60 minutes. The high-power charging time is longer and the charging time is greatly shortened.

[0032] Preferably, both the DC+ needle assembly 300 and the DC- needle assembly 400 include a needle terminal 1, a first cable connection terminal 2, and a second cable connection terminal 3. The first cable connection terminal 2 is provided with a first flow channel 201, the needle terminal 1 is provided with a second flow channel 101, and the second cable connection terminal 3 is provided with a third flow channel 301. The first flow channel 201, the second flow channel 101, and the third flow channel 301 are sequentially connected to form a flow channel. In this embodiment, the DC+gun needle assembly 300 is used as an example. One set of DC+liquid-cooled cables 500 is connected to the first cable connection terminal 2, and another set of DC+liquid-cooled cables 500 is connected to the second cable connection terminal 3. The power lines 5 of the two sets of DC+liquid-cooled cables 500 are connected in parallel to the gun needle terminal 1. The coolant channel 6 of one set of DC+liquid-cooled cables 500 is connected to the second channel 101 in the gun needle terminal 1 through the first flow channel 201 in the first cable connection terminal 2. The coolant channel 6 of the other set of DC+liquid-cooled cables 500 is connected to the second flow channel 101 in the gun needle terminal 1 through the third flow channel 301 in the second cable connection terminal 3. This allows the coolant channel 6 of one set of DC-liquid-cooled cables 600 to be connected to the coolant channel 6 of the other set of DC-liquid-cooled cables 600. The DC-gun needle assembly 400 is similar and will not be described in detail here.

[0033] Preferably, the gun needle terminal 1 includes a connecting block 102, a power gun needle 103, a gun needle positioning pin 104, and a positioning gun needle insulator 105. The second flow channel 101 is located inside the connecting block 102. The first cable connection terminal 2 and the second cable connection terminal 3 are fixedly connected to one end of the connecting block 102. The power gun needle 103 is fixedly connected to the other end of the connecting block 102. The gun needle positioning pin 104 is fixedly connected inside the power gun needle 103. The positioning gun needle insulator 105 is fixedly connected to the gun needle positioning pin 104.

[0034] Preferably, one end of the connecting block 102 is provided with a first connecting hole 1021 and a second connecting hole 1022 communicating with the second flow channel 101. The first cable connecting terminal 2 is threaded into the first connecting hole 1021, and the second cable connecting terminal 3 is threaded into the second connecting hole 1022. The other end of the connecting block 102 is provided with a third connecting hole 1023. The power gun needle 103 is threaded into the third connecting hole 1023. The power gun needle 103 is provided with a fourth connecting hole 1031. The gun needle positioning needle 104 is threaded into the fourth connecting hole 1031, and the positioning gun needle insulator 105 is snapped onto the gun needle positioning needle 104. In this embodiment, the first cable connection terminal 2 and the second cable connection terminal 3 are threaded to one end of the connecting block 102, the power gun needle 103 is threaded to the other end of the connecting block 102, the gun needle positioning needle 104 is threaded to the inside of the power gun needle 103, and the positioning gun needle insulator 105 is snapped onto the gun needle positioning needle 104. The structure is simple, the installation and disassembly are convenient and quick, and the maintenance efficiency is high.

[0035] Preferably, the MCS gun housing body 100 is further provided with a PE port 7, a CE port 8, an ID port 9, a PHY1 port 10, and a PHY2 port 11; the cable 200 is further provided with two sets of PE grounding cables 12, CE signal wires 13, ID signal wires 14, PHY1 signal wires 15, and PHY2 signal wires 16; the PE grounding cable 12 is connected to the PE port 7, the CE signal wire 13 is connected to the CE port 8, the ID signal wire 14 is connected to the ID port 9, the PHY1 signal wire 15 is connected to the PHY1 port 10, and the PHY2 signal wire 16 is connected to the PHY2 port 11. In this embodiment, PE port 7, CE port 8, ID port 9, PHY1 port 10, and PHY2 port 11 are five key signal / safety interfaces of the MCS megawatt liquid-cooled supercharger connector. Among them, PE port 7 is mainly used for protective grounding, CE port 8 is mainly used for charging permission, state switching, and low-voltage auxiliary power control, ID port 9 is mainly used for insertion detection, detecting that the gun socket is fully inserted, and prohibiting high-voltage output when not inserted, PHY1 port 10 and PHY2 port 11 are mainly used for vehicle Ethernet communication, carrying charging communication, encryption, BMS real-time data, power scheduling, fault reporting, etc., which are necessary electrical structures for the normal and safe operation of the MCS megawatt liquid-cooled supercharger connector. They belong to the prior art, and their specific structure and working principle will not be described in detail here.

[0036] Preferably, the PE grounding cable 12 includes a PE wire insulation layer 1201 and a PE wire conductor 1202, with the PE wire conductor 1202 passing through the PE wire insulation layer 1201. The CE signal wire 13, ID signal wire 14, PHY1 signal wire 15, and PHY2 signal wire 16 are all passed through the first signal wire shielding layer 17. In this embodiment, two sets of separately cabled PE grounding cables 12 are provided in the cable 200. One set of PE wire conductors 1202 is cabled separately within one set of PE wire insulation layers 1201, while the CE signal wire 13, ID signal wire 14, PHY1 signal wire 15, and PHY2 signal wire 16 are cabled together within one set of the first signal wire shielding layer 17. This avoids the wire bundles in the cable 200 from being scattered and messy, resulting in a neat and aesthetically pleasing overall appearance and improving maintenance efficiency.

[0037] Preferably, the cable 200 also includes an A+ auxiliary power conductor 18 and an A- auxiliary power conductor 19, which are both run through the auxiliary power line shielding layer 20. In this embodiment, the A+ auxiliary power conductor 18 and the A- auxiliary power conductor 19 are mainly used to supply power to the low-voltage control system before and during vehicle charging. When the vehicle's low-voltage battery is depleted (due to prolonged parking) and the battery management system cannot be woken up, the A+ auxiliary power conductor 18 and the A- auxiliary power conductor 19 first provide 24V to forcibly wake up the vehicle's BMS, charging controller, etc. This is a necessary electrical structure for waking up the vehicle and driving safety and communication, and is existing technology. Its specific structure and working principle will not be described in detail here. The A+ auxiliary power conductor 18 and the A- auxiliary power conductor 19 are run through a set of auxiliary power line shielding layers 20 to form a cable, making the wiring harness neat and aesthetically pleasing.

[0038] Preferably, the cable 200 is further provided with TP1+ signal wire 21, TP2+ signal wire 22, TP1- signal wire 23 and TP2- signal wire 24, which are all run through the second signal line shielding layer 25. In this embodiment, TP1+ signal wire 21 and TP1- signal wire 23, TP2+ signal wire 22 and TP2- signal wire 24 are two pairs of temperature signal differential lines, mainly used for real-time detection of the nozzle / contact temperature. An NTC thermistor is respectively installed in the DC+ nozzle assembly 300 and the DC- nozzle assembly 400. TP1+ signal wire 21 and TP1- signal wire 23 are used to monitor the contact temperature of the DC+ nozzle assembly 300, and TP2+ signal wire 22 and TP2- signal wire 24 are used to monitor the contact temperature of the DC- nozzle assembly 400. This is a necessary electrical structure for realizing real-time temperature measurement, multi-level thermal protection, and linkage liquid cooling. It belongs to the prior art, and its specific structure and working principle will not be described in detail here. TP1+ signal wire 21, TP2+ signal wire 22, TP1- signal wire 23 and TP2- signal wire 24 are all run through a set of second signal line shielding layers 25 to form a cable, making the wire harness neat and beautiful.

[0039] Preferably, the MCS gun housing body 100 is a one-piece molded structure. In this embodiment, the MCS gun housing body 100 adopts a one-piece molded structure, which, compared with the split structure in the prior art, provides a better feel and better overall outdoor waterproof and dustproof performance, thus improving user comfort. Example 2

[0040] like Figure 10As shown, the liquid cooling system of this embodiment includes the aforementioned MCS megawatt liquid-cooled supercharge connector, first heat exchanger 26, second heat exchanger 27, liquid tank 28, first circulation pump 29, and second circulation pump 30. On the DC+ needle assembly 300, the coolant channel 6 of a set of DC+ liquid-cooled cables 500, the first heat exchanger 26, the liquid tank 28, the first circulation pump 29, the coolant channel 6 of another set of DC+ liquid-cooled cables 500, and the flow channel within the DC+ needle assembly 300 are sequentially connected to form a DC+ liquid-cooled circulation loop. On the DC-needle assembly 400, the coolant channel 6 of a set of DC-liquid-cooled cables 600, the second heat exchanger 27, the liquid tank 28, the second circulation pump 30, the coolant channel 6 of another set of DC-liquid-cooled cables 600, and the flow channel within the DC-needle assembly 400 are sequentially connected to form a DC-liquid-cooled circulation loop. The liquid cooling system includes an MCS megawatt liquid-cooled supercharger connector. During the circulating cooling process, the coolant is pumped by the first circulating pump 29 (or the second circulating pump 30) into the coolant channel 6 of a set of DC+ liquid-cooled cables 500 (or DC-liquid-cooled cables 600) to perform convective heat transfer on the power lines 5. After passing through the flow channel of the DC+ needle assembly 300 (or DC-needle assembly 400), it enters the coolant channel 6 of another set of DC+ liquid-cooled cables 500 (or DC-liquid-cooled cables 600) to perform convective heat transfer on the power lines 5. Line 5 undergoes convective heat exchange. The high-temperature coolant after heat exchange is transported to the first heat exchanger 26 (or the second heat exchanger 27) for cooling and then transported to the storage tank 28. The first circulation pump 29 (or the second circulation pump 30) continues to pump the cooled coolant to the DC+ liquid-cooled cable 500 (or the DC- liquid-cooled cable 600), forming a liquid-cooled circulation loop. This results in high cooling efficiency of the coolant, thereby improving the cooling efficiency of the power line 5 and ensuring a longer high-power charging time for the MCS megawatt liquid-cooled supercharger connector.

[0041] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the inventive concept should also be considered within the scope of protection of the present invention.

Claims

1. An MCS megawatt liquid-cooled supercharger connector, characterized in that, The device includes an MCS gun housing body (100) and a cable (200). The MCS gun housing body (100) is provided with a DC+ gun needle assembly (300) and a DC- gun needle assembly (400). The cable (200) is provided with two sets of DC+ liquid-cooled cables (500) and two sets of DC- liquid-cooled cables (600). The two sets of DC+ liquid-cooled cables (500) are connected in parallel to the DC+ gun needle assembly (300), and the two sets of DC- liquid-cooled cables (600) are connected in parallel to the DC- gun needle assembly (400). The DC+ liquid-cooled cable (500) and the DC-liquid-cooled cable (600) have the same structure, both including a liquid-cooled pipe (4) and a power line (5). The power line (5) is inserted into the liquid-cooled pipe (4), and a coolant channel (6) is formed between the outer wall of the power line (5) and the inner wall of the liquid-cooled pipe (4). The DC+ gun needle assembly (300) and the DC- gun needle assembly (400) have the same structure and are both provided with flow channels. On the DC+ gun needle assembly (300), the coolant channel (6) of one set of DC+ liquid-cooled cables (500) is connected to the coolant channel (6) of another set of DC+ liquid-cooled cables (500) through the flow channels. On the DC-gun needle assembly (400), the coolant channels (6) of one set of DC-liquid-cooled cables (600) are connected to the coolant channels (6) of another set of DC-liquid-cooled cables (600) through a flow channel.

2. The MCS megawatt liquid-cooled supercharger connector according to claim 1, characterized in that, Both the DC+ needle assembly (300) and the DC- needle assembly (400) include a needle terminal (1), a first cable connection terminal (2) and a second cable connection terminal (3). The first cable connection terminal (2) has a first flow channel (201), the needle terminal (1) has a second flow channel (101), and the second cable connection terminal (3) has a third flow channel (301). The first flow channel (201), the second flow channel (101) and the third flow channel (301) are connected in sequence to form the flow channel.

3. The MCS megawatt liquid-cooled supercharger connector according to claim 2, characterized in that, The gun needle terminal (1) includes a connecting block (102), a power gun needle (103), a gun needle positioning pin (104), and a positioning gun needle insulator (105). The second flow channel (101) is located inside the connecting block (102). The first cable connection terminal (2) and the second cable connection terminal (3) are fixedly connected to one end of the connecting block (102). The power gun needle (103) is fixedly connected to the other end of the connecting block (102). The gun needle positioning pin (104) is fixedly connected inside the power gun needle (103). The positioning gun needle insulator (105) is fixedly connected to the gun needle positioning pin (104).

4. The MCS megawatt liquid-cooled supercharger connector according to claim 3, characterized in that, One end of the connecting block (102) is provided with a first connecting hole (1021) and a second connecting hole (1022) communicating with the second flow channel (101). The first cable connecting terminal (2) is threaded into the first connecting hole (1021), and the second cable connecting terminal (3) is threaded into the second connecting hole (1022). The other end of the connecting block (102) is provided with a third connecting hole (1023). The power gun needle (103) is threaded into the third connecting hole (1023). The power gun needle (103) is provided with a fourth connecting hole (1031). The gun needle positioning needle (104) is threaded into the fourth connecting hole (1031). The positioning gun needle insulator (105) is snapped onto the gun needle positioning needle (104).

5. The MCS megawatt liquid-cooled supercharger connector according to claim 1, characterized in that, The MCS gun housing body (100) is also provided with a PE port (7), a CE port (8), an ID port (9), a PHY1 port (10) and a PHY2 port (11). The cable (200) is also equipped with two sets of PE grounding cables (12), CE signal wires (13), ID signal wires (14), PHY1 signal wires (15) and PHY2 signal wires (16). The PE grounding cable (12) is connected to the PE port (7), the CE signal wire (13) is connected to the CE port (8), the ID signal wire (14) is connected to the ID port (9), the PHY1 signal wire (15) is connected to the PHY1 port (10), and the PHY2 signal wire (16) is connected to the PHY2 port (11).

6. The MCS megawatt liquid-cooled supercharger connector according to claim 5, characterized in that, The PE grounding cable (12) includes a PE wire insulation layer (1201) and a PE wire conductor (1202), wherein the PE wire conductor (1202) is inserted inside the PE wire insulation layer (1201); The CE signal wire (13), the ID signal wire (14), the PHY1 signal wire (15), and the PHY2 signal wire (16) are all run through the first signal line shielding layer (17).

7. The MCS megawatt liquid-cooled supercharger connector according to claim 6, characterized in that, The cable (200) is also provided with an A+ auxiliary power wire (18) and an A- auxiliary power wire (19) that are connected to the main body (100) of the MCS gun housing. The A+ auxiliary power wire (18) and the A- auxiliary power wire (19) are together run through the auxiliary power line shielding layer (20).

8. The MCS megawatt liquid-cooled supercharger connector according to claim 7, characterized in that, The cable (200) is also provided with TP1+ signal wire (21), TP2+ signal wire (22), TP1- signal wire (23) and TP2- signal wire (24) connected to the main body (100) of the MCS gun housing. The TP1+ signal wire (21), TP2+ signal wire (22), TP1- signal wire (23) and TP2- signal wire (24) are all run through the second signal line shielding layer (25).

9. The MCS megawatt liquid-cooled supercharger connector according to claim 1, characterized in that, The MCS gun shell body (100) is a one-piece molded structure.

10. A liquid cooling system, characterized in that, The MCS megawatt liquid-cooled supercharge connector according to any one of claims 1 to 9, a first heat exchanger (26), a second heat exchanger (27), a liquid storage tank (28), a first circulation pump (29), and a second circulation pump (30). On the DC+ gun needle assembly (300), a set of coolant channels (6) of the DC+ liquid-cooled cable (500), the first heat exchanger (26), the liquid storage tank (28), the first circulation pump (29), another set of coolant channels (6) of the DC+ liquid-cooled cable (500), and the flow channel in the DC+ gun needle assembly (300) are connected in sequence to form a DC+ liquid-cooled circulation loop; On the DC-gun needle assembly (400), the coolant channel (6) of a set of DC-liquid-cooled cables (600), the second heat exchanger (27), the liquid storage tank (28), the second circulation pump (30), the coolant channel (6) of another set of DC-liquid-cooled cables (600), and the flow channel in the DC-gun needle assembly (400) are connected in sequence to form a DC-liquid-cooled circulation loop.

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