High-voltage connector

Abstract

The high-voltage connector comprises a main inner core, the main inner core is provided with a supporting plate, one end of the supporting plate is provided with a main limiting block, and the two sides of the main limiting block are each provided with a main containing groove I used for containing a main cable; the other end of the supporting plate is provided with a secondary limiting block, the two sides of the secondary limiting block are each provided with a branch containing groove I used for containing a branch cable, and the number of the branch containing grooves I is larger than that of the main containing grooves I; the two sides of the main inner core are also provided with positioning assemblies used for positioning the switching copper bars. The switching copper bars are connected with the aluminum cores of the main cable and the branch cables through ultrasonic welding. Auxiliary inner cores are arranged on the two sides of the main inner core, and the auxiliary inner cores and the main inner core are matched with each other to fix the main cable, the branch cables and the switching copper bars. The beneficial effects of the invention are mainly embodied in that the design is exquisite, the main inner core and the auxiliary inner core cooperate with each other to limit the main cable, the branch cable and the switching copper bar, and the assembly structure is stable and reliable, reasonable in layout and convenient for batch production.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile connectors, and in particular to a high-voltage connector. Background Art

[0002] As the range of electric vehicles continues to increase, the charge level of their batteries continues to rise. This also means that charging times are increasing. To improve user experience and shorten charging times, the charging power and current of electric vehicles are being increased.

[0003] Currently, copper conductors are commonly used in electric vehicle charging harnesses. However, large-diameter copper conductors lack cost and weight advantages. Consequently, the trend is toward replacing copper conductors with aluminum conductors. To accommodate these connectors, various manufacturers are developing connectors specifically for aluminum conductors.

[0004] For example, authorization announcement No. CN216413307U proposes a shielded wire splitter and a branching connector thereof, a shielded wire splitter comprising an input end and an output end, the input end being connected to at least one shielded cable, and the output end being connected to at least two shielded cables; the shielded wire splitter comprises a branching sheath and a shielding shell, the branching sheath being arranged inside the shielding shell; and a branching terminal being arranged inside the branching sheath, the shielded cable crimping harness terminal being insertable into the branching sheath and connected to the branching terminal; the branching connector comprising at least one shielded wire splitter, and the shielded wire splitter being assembled inside the sheath shell. It's widely known in the industry that copper busbars are commonly used for branch terminals, while aluminum cores are typically used for shielded cables. Direct contact between the aluminum core and the copper busbar in these splitters creates the following issues: 1. Electrochemical corrosion from direct contact between copper and aluminum; 2. The different thermal expansion coefficients of copper and aluminum make stress relaxation at the connection site more likely; and 3. The surface of the aluminum rod conductor is susceptible to oxidation, forming an oxide film that blocks contact between the copper and aluminum conductors, increasing connection resistance and connector temperature rise. This can lead to overheating and ablation of the connector, impacting the operation of the entire electric vehicle charging circuit. Furthermore, installing the shielded wire splitter directly within the sheath housing results in poor assembly stability and requires the addition of redundant positioning structures, resulting in a complex structure that is not conducive to mass production. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a high-voltage connector.

[0006] The purpose of the present invention is achieved through the following technical solutions: A high-voltage connector comprises a main inner core, the main inner core having a support plate, one end of the support plate having a main limit block, both sides of the main limit block are provided with a main accommodating groove I for accommodating a main cable; the other end of the support plate having a secondary limit block, both sides of the secondary limit block are provided with a sub-accommodating groove I for accommodating a branch cable, the number of the sub-accommodating grooves I being greater than the number of the main accommodating grooves I; both sides of the main inner core also have positioning components for positioning a transfer copper bus, the transfer copper bus is connected to the aluminum core of the main cable and the branch cable by ultrasonic welding; both sides of the main inner core are also provided with auxiliary inner cores, the auxiliary inner cores cooperate with the main inner core to fix the main cable, the branch cable and the transfer copper bus.

[0007] Preferably, the auxiliary inner core has at least a shell, and a main accommodating groove II is provided at one end of the shell, and the main accommodating groove II and the main accommodating groove I cooperate with each other to form a main accommodating groove adapted to the main cable; a sub-accommodating groove II is provided at the other end of the shell, and the sub-accommodating groove II and the sub-accommodating groove I cooperate with each other to form a sub-accommodating groove adapted to the sub-cable; the support plate is provided with upper and lower plug-in blocks, and the plug-in blocks are provided with plug-in slots, and the shell is provided with a plug-in board adapted to the plug-in slot, and the plug-in board can be plugged into the plug-in slot to limit the radial movement of the auxiliary inner core.

[0008] Preferably, the top and bottom surfaces of the main limit block and the secondary limit block are fixed with tongues, and the tongues on the top and bottom surfaces are arranged back to back. A limiting groove is provided on the shell, and the tongue extends into the limiting groove. A clamping block is fixed on the end side of the tongue, and the clamping block can abut against the shell to limit the axial movement of the auxiliary inner core.

[0009] Preferably, the positioning assembly at least includes a protrusion fixed on the support plate, a heat dissipation groove is provided on the protrusion, positioning pins are provided at both ends of the heat dissipation groove, and a through hole compatible with the positioning pin is provided on the adapter copper bus; a positioning block is fixed on the inner wall of the shell, and a positioning groove is provided on the positioning block for accommodating the aluminum core of the main cable and the branch cable, and positioning holes are provided on both sides of the positioning groove.

[0010] Preferably, a group of lightweight grooves are provided on the main limit block, the secondary limit block and the shell.

[0011] Preferably, the main inner core and the auxiliary inner core cooperate with each other to form an inner shell, and the outer surface of the inner shell is wrapped with a shielding assembly, and the shielding assembly includes at least a symmetrically arranged main shielding layer, and the main shielding layer has a main shielding plate that is tightly attached to the outer wall of the auxiliary inner core, and side shielding plates are bent inward on both sides of the main shielding plate, and the side shielding plates of adjacent main shielding layers abut against each other, and end shielding plates are bent inward at both ends of the main shielding plate, and the end shielding plates are tightly attached to the end sides of the auxiliary inner core, and shielding ridges I are bent on the end shielding plates, and the shielding ridges I at least partially extend and are placed in the main accommodating groove I and the accommodating groove I; a locking shielding plate is also provided between adjacent end shielding plates, and shielding ridges II are bent on both sides of the locking shielding plate, and the shielding ridges II at least partially extend and are placed in the main accommodating groove II and the sub-accommodating groove II.

[0012] Preferably, a group of card slots are opened on the main shielding plate and the side shielding plate, and buckles are built into the card slots. The buckles are integrally formed with the main shielding plate and the side shielding plate.

[0013] Preferably, it also includes an outer shell, which includes at least an integrally formed receiving end and a guide end, the receiving end is provided with a receiving groove for accommodating the auxiliary inner core and the main inner core, the guide end is provided with a guide groove, the guide groove is provided with a guide block fixed on the guide end, and the guide block is provided with a guide hole adapted to the main cable.

[0014] Preferably, the guide groove is equipped with a waterproof ring I that matches it. The waterproof ring I is sleeved on the main inner core, and one end thereof abuts against the guide block, and the other end abuts against the tail cap I. The tail cap I is provided with a locking plate I fixed thereon, and a locking groove I is provided on the locking plate I. A locking block I is also fixed on the guide end, and the locking block I can be placed in the locking groove I.

[0015] Preferably, the receiving groove is equipped with a waterproof ring II that is compatible with it. The waterproof ring II is sleeved on the distribution cable, and one end thereof abuts against the main inner core, and the other end abuts against the tail cap II. The tail cap II is provided with a locking plate II, and the locking plate II is provided with a locking groove II. A locking block II is also fixed on the receiving end, and the locking block II can be placed in the locking groove II.

[0016] The beneficial effects of the present invention are mainly reflected in: 1. The design is exquisite. The main inner core and the auxiliary inner core cooperate with each other to limit the main cable, branch cable and transfer copper busbar. The assembly structure is stable and reliable, with a reasonable layout, which is convenient for mass production. Specifically, the main accommodating slot II and the main accommodating slot I cooperate with each other to limit the main cable, and the branch accommodating slot II and the branch accommodating slot I cooperate with each other to limit the branch cable. After the plug-in board is plugged into the plug-in slot on the plug-in block, the block on the tongue is abutted against the shell to limit the main inner core and the auxiliary inner core to each other, and prevent the main inner core and the auxiliary inner core from moving or displacing. This connection method is simple and convenient, easy to disassemble, replace and repair, and greatly improves work efficiency. In addition, the positioning pin is inserted into the tube through-hole of the transfer copper busbar to realize radial positioning of the transfer copper busbar, and then inserted into the positioning hole to realize axial positioning of the transfer copper busbar. This positioning method is stable and reliable, does not require the addition of redundant positioning structures, and saves costs.

[0017] 2. Ultrasonic welding integrates the copper busbar and aluminum core, eliminating direct mechanical contact between the dissimilar conductors. This effectively reduces the microbattery effect formed between the dissimilar metals, inhibiting electrochemical corrosion, extending the connector's service life, and improving connection reliability. Ultrasonic welding also uses high-frequency vibrations to re-engage the surface molecules of the aluminum core and the copper busbar, forming a metallurgical bond. This creates a strong weld and enhances the mechanical properties of the weld, preventing the formation of brittle intermetallic compounds (such as Al2Cu and Al4Cu9) during fusion welding. The weld acts as a buffer for stress distribution, reducing the risk of fracture or fatigue damage, and thus enhancing the overall durability of the weld. Furthermore, the weld achieves atomically pure contact between the copper busbar and aluminum core, resulting in a near-zero resistivity. This reduces connection resistance, lowers connector temperature, and improves safety.

[0018] 3. The setting of the heat sink can accelerate the transfer of heat from the transfer copper bus to the air, reducing the working problems of the connector; in addition, the heat sink can also guide the directional flow of air to avoid hot air stagnation and improve the convection heat dissipation efficiency.

[0019] 4. The setting of the lightweight slot can greatly reduce the overall weight of the connector, achieve lightweight, and is conducive to reasonable layout. In addition, it also greatly reduces costs and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings: Figure 1 : A perspective view of a preferred embodiment of the present invention; Figure 2 : A cross-sectional view of a preferred embodiment of the present invention; Figure 3: A three-dimensional diagram of the main shielding layer in a preferred embodiment of the present invention; Figure 4 : A three-dimensional view of a locking shielding plate in a preferred embodiment of the present invention; Figure 5 : A perspective view of a preferred embodiment of the present invention, wherein the shield assembly, the housing, and components on the housing are removed; Figure 6 : A perspective view of a preferred embodiment of the present invention, wherein the shield assembly, the housing, the components on the housing, and the auxiliary inner core on one side are removed; Figure 7 : A three-dimensional diagram of the auxiliary inner core in a preferred embodiment of the present invention; Figure 8 : A three-dimensional diagram of the main inner core in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] like Figures 1 to 8 As shown, the present invention discloses a high-voltage connector, comprising a main inner core 1 and auxiliary inner cores 6 disposed on both sides thereof. In the present invention, the main inner core 1 has a support plate 11, one end of which has a main stopper 12, and both sides of the main stopper 12 are provided with a main receiving groove I 13 for accommodating a main cable 2. The auxiliary inner core 6 has a housing 61, one end of which is provided with a main receiving groove II 62. The main receiving groove II 62 and the main receiving groove I 13 cooperate with each other to form a main receiving groove adapted for the main cable 2, thereby securing the main cable 2. This fixing method is simple and convenient, greatly improving work efficiency.

[0025] The other end of the support plate 11 has a secondary limit block 14, and both sides of the secondary limit block 14 are provided with a sub-accommodating groove I 15 for accommodating the branch cable 3. The other end of the shell 61 is provided with a sub-accommodating groove II 63. The sub-accommodating groove II 63 and the sub-accommodating groove I 15 cooperate with each other to form a sub-accommodating groove adapted to the branch cable 3, thereby fixing the branch cable 3. This fixing method is simple and convenient, greatly improving work efficiency.

[0026] In addition, the number of the sub-accommodating grooves I 15 is greater than the number of the main accommodating grooves I 13. In this embodiment, the main inner core 1 is provided with two main accommodating grooves, one on each side of the support plate 11, and the auxiliary inner core 6 is provided with four sub-accommodating grooves, thereby achieving the goal of dividing two cores into four cores. Of course, other numbers of sub-cores are also possible and can be adjusted according to actual needs, all of which fall within the scope of protection of the present invention.

[0027] Another key design feature of the present invention is that both sides of the main inner core 1 are provided with positioning components 5 for positioning the transfer copper busbar 4. Specifically, the positioning components 5 include at least a bump 51 fixed to the support plate 11, and a heat dissipation slot 52 defined in the bump 51. The provision of the heat dissipation slot 52 accelerates the transfer of heat from the transfer copper busbar 4 to the air, reducing operational issues with the connector. Furthermore, the heat dissipation slot guides directional air flow, preventing hot air from stagnating and improving convective heat dissipation efficiency.

[0028] The heat dissipation slot 52 is provided with positioning pins 53 at both ends, and the transfer copper busbar 4 is provided with a through-hole 41 that matches the positioning pin 53. A positioning block 54 is fixedly provided on the inner wall of the housing 61, and the positioning block 54 is provided with a positioning groove 55 for accommodating the aluminum core of the main cable 2 and the branch cable 3. The positioning groove 55 is provided with positioning holes 56 on both sides of the positioning block 54. In the above, the positioning pin 53 is inserted into the pipe through-hole 41 of the transfer copper busbar 4 to achieve radial positioning of the transfer copper busbar 4, and then inserted into the positioning hole 56 to achieve axial positioning of the transfer copper busbar 4. This positioning method is stable and reliable, does not require the addition of redundant positioning structures, saves costs, and is beneficial to enterprise development.

[0029] Furthermore, the transfer copper busbar 4 is connected to the aluminum core of the main cable 2 and the branch cable 3 by ultrasonic welding. In the above, the transfer copper busbar 4 and the aluminum core are welded into one by ultrasonic wave, which avoids the mechanical direct contact between conductors of different materials, thereby effectively reducing the micro-battery effect formed between different metals, inhibiting the occurrence of electrochemical corrosion, extending the service life of the connector and improving the connection reliability. At the same time, ultrasonic welding uses high-frequency vibration to re-engage the surface molecules of the aluminum core and the transfer copper busbar 4 to form a metallurgical bond. The weld strength is high and the mechanical properties of the welded part are enhanced. Especially when subjected to external force impact or long-term dynamic load, the welded part can serve as a medium to better buffer the stress distribution, reduce the risk of fracture or fatigue damage, and thus enhance the overall durability of the welded part. In addition, the welded part of the transfer copper busbar 4 and the aluminum core achieves pure contact at the atomic level, and the resistivity of the welded part approaches zero, which reduces the connection resistance, reduces the temperature of the connector, and improves safety.

[0030] In the present invention, the support plate 11 is provided with a plug-in block 16 disposed in an upper and lower position, and the plug-in block 16 is provided with a plug-in slot 161. The housing 61 is provided with a plug-in plate 69 adapted to the plug-in slot 161. The plug-in plate 69 can be plugged into the plug-in slot 161 to limit the radial movement of the auxiliary inner core 6. The top and bottom surfaces of the primary limit block 12 and the secondary limit block 14 are both fixed with a tilting tongue 17. The tilting tongues 17 on the top and bottom surfaces are arranged opposite to each other. The housing 61 is provided with a limit slot 64. The tilting tongue 17 extends and is placed in the limit slot 64. The end side of the tilting tongue 17 is fixed with a clamping block 171. The clamping block 171 can abut against the housing 61 to limit the axial movement of the auxiliary inner core 6. In the above description, after the plug-in board 69 is plugged into the plug-in slot 161 on the plug-in block 16, the block 171 on the tongue 17 is brought into contact with the housing, thereby limiting the main inner core and the auxiliary inner core to each other, thereby preventing the main inner core and the auxiliary inner core from moving or displacing. In addition, this connection method is simple and convenient, facilitating disassembly, replacement, and maintenance, greatly improving work efficiency, and having a wide range of applicability.

[0031] A set of lightweight slots 10 are provided on the main limit block 12, the secondary limit block 14 and the shell 61. The provision of the lightweight slots 10 can significantly reduce the overall weight of the connector, achieve lightweighting, and facilitate reasonable layout. In addition, it also significantly reduces costs and saves energy.

[0032] The main inner core 1 and the auxiliary inner core 6 cooperate with each other to form an inner shell, and a shielding assembly 7 is wrapped on the outer surface of the inner shell. The shielding assembly 7 includes at least a symmetrically arranged main shielding layer 71, and the main shielding layer 71 has a main shielding plate 711 that is tightly attached to the outer wall of the auxiliary inner core 6. Side shielding plates 712 are bent inward on both sides of the main shielding plate 711. The side shielding plates 712 of adjacent main shielding layers 71 abut against each other. End shielding plates 713 are bent inward on both ends of the main shielding plate 711. The end shielding plate 713 is tightly attached to the end side of the auxiliary inner core 6 and has a bent shielding ridge I 714 formed thereon. This ridge I 714 extends at least partially into the main accommodating groove I 13 and the accommodating groove I 15. A locking shielding plate 72 is also provided between adjacent end shielding plates 713. Bent shielding ridges II 721 are formed on either side of this locking shielding plate 72. These ridges II 721 extend at least partially into the main accommodating groove II 62 and the sub-accommodating groove II 63. In the above, the main shielding layer 71 and the locking shielding plate 72 cooperate to completely encase the main inner core 1 and the auxiliary inner core 6, isolating them from external noise interference (such as radio signals and power supply fluctuations), preventing signal attenuation or distortion, ensuring high-speed communication stability, and improving accuracy.

[0033] Furthermore, the main shielding plate 711 and the side shielding plates 712 are provided with a set of slots 73, each of which houses a clip 74 integrally formed with the main shielding plate 711 and the side shielding plates 712. The clips 74 can be attached to the main and auxiliary inner cores, enabling quick disassembly without the need for welding or screws, simplifying the assembly process and significantly improving work efficiency.

[0034] In the present invention, the connector also includes a shell 8, which includes at least an integrally formed receiving end 81 and a guide end 82. The receiving end 81 is provided with a receiving groove 83 for accommodating the auxiliary inner core 6 and the main inner core 1, and the guide end 82 is provided with a guide groove 84. The guide groove 84 is provided with a guide block 85 fixed on the guide end 82, and the guide block 85 is provided with a guide hole 86 adapted to the main cable 2.

[0035] Furthermore, the guide groove 84 is equipped with a waterproof ring Ⅰ841 that is compatible with it. The waterproof ring Ⅰ841 is sleeved on the main inner core 1, and one end thereof abuts against the guide block 85, and the other end abuts against the tail cap Ⅰ842. The tail cap Ⅰ842 is provided with a locking plate Ⅰ843, and the locking plate Ⅰ843 is provided with a locking groove Ⅰ844. The guide end 82 is also provided with a locking block Ⅰ845, and the locking block Ⅰ845 can be placed in the locking groove Ⅰ844. The receiving groove 83 houses a matching waterproof ring II 831. Said waterproof ring II 831 is fitted over the branch cable 3, with one end abutting the main inner core 1 and the other end abutting the tail cap II 832. The tail cap II 832 is fixed with a locking plate II 833, which defines a locking groove II 834. A locking block II 835 is also fixed to the receiving end 81 and can be positioned within the locking groove II 834. The waterproof ring provides a seal that effectively prevents external contaminants such as moisture, dust, and oil from entering the housing, ensuring the connector's improved waterproof performance.

[0036] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0037] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high voltage connector comprising a main inner core (1), characterized in that: The main inner core (1) has a support plate (11), one end of the support plate (11) has a main limit block (12), both sides of the main limit block (12) are provided with a main receiving groove I (13) for receiving the main cable (2); the other end of the support plate (11) has a secondary limit block (14), both sides of the secondary limit block (14) are provided with a sub-receiving groove I (15) for receiving the sub-cable (3), and the number of the sub-receiving grooves I (15) is large. The number of the main accommodating slots I (13) is determined by the number of the main accommodating slots I (13); positioning components (5) for positioning the transfer copper busbar (4) are provided on both sides of the main inner core (1); the transfer copper busbar (4) is connected to the aluminum cores of the main cable (2) and the branch cable (3) by ultrasonic welding; auxiliary inner cores (6) are provided on both sides of the main inner core (1); the auxiliary inner cores (6) cooperate with the main inner core (1) to fix the main cable (2), the branch cable (3) and the transfer copper busbar (4).

2. The high voltage connector according to claim 1, wherein: The auxiliary inner core (6) at least comprises a shell (61), one end of the shell (61) is provided with a main accommodating groove II (62), the main accommodating groove II (62) and the main accommodating groove I (13) cooperate with each other to form a main accommodating groove adapted to the main cable (2); the other end of the shell (61) is provided with a sub-accommodating groove II (63), the sub-accommodating groove II (63) and the sub-accommodating groove I (15) cooperate with each other to form a sub-accommodating groove adapted to the sub-cable (3); the support plate (11) is provided with upper and lower plug-in blocks (16), the plug-in block (16) is provided with a plug-in groove (161), the shell (61) is provided with a plug-in board (69) adapted to the plug-in groove (161), the plug-in board (69) can be plugged into the plug-in groove (161) to limit the radial movement of the auxiliary inner core (6).

3. The high voltage connector according to claim 2, wherein: The top and bottom surfaces of the primary limiting block (12) and the secondary limiting block (14) are both fixedly provided with tongues (17), and the tongues (17) on the top and bottom surfaces are arranged opposite to each other. A limiting groove (64) is provided on the shell (61), and the tongue (17) extends into the limiting groove (64). A clamping block (171) is fixedly provided on the end side of the tongue (17), and the clamping block (171) can abut against the shell (61) to limit the axial movement of the auxiliary inner core (6).

4. The high voltage connector according to claim 3, characterized in that: The positioning assembly (5) at least comprises a protrusion (51) fixed on the support plate (11), a heat dissipation groove (52) is provided on the protrusion (51), positioning pins (53) are provided at both ends of the heat dissipation groove (52), and a through hole (41) adapted to the positioning pin (53) is provided on the transfer copper busbar (4); a positioning block (54) is fixed on the inner wall of the shell (61), a positioning groove (55) is provided on the positioning block (54) for accommodating the aluminum core of the main cable (2) and the branch cable (3), and positioning holes (56) provided on the positioning block (54) are provided on both sides of the positioning groove (55).

5. The high voltage connector according to claim 4, characterized in that: A set of lightweight grooves (10) are provided on the main limit block (12), the secondary limit block (14) and the housing (61).

6. The high voltage connector according to any one of claims 1 to 5, characterized in that: The main inner core (1) and the auxiliary inner core (6) cooperate with each other to form an inner shell, and a shielding assembly (7) is wrapped on the outer surface of the inner shell. The shielding assembly (7) at least includes a symmetrically arranged main shielding layer (71), and the main shielding layer (71) has a main shielding plate (711) that is tightly attached to the outer wall of the auxiliary inner core (6). Side shielding plates (712) are bent inward on both sides of the main shielding plate (711), and the side shielding plates (712) of adjacent main shielding layers (71) abut against each other. End shielding plates (713) are bent inward on both ends of the main shielding plate (711). The end face shielding plate (713) is tightly attached to the end side of the auxiliary inner core (6), and a shielding ridge I (714) is bent on the end face shielding plate (713), and the shielding ridge I (714) at least partially extends and is placed in the main accommodating groove I (13) and the accommodating groove I (15); a locking shielding plate (72) is also provided between adjacent end face shielding plates (713), and shielding ridges II (721) are bent on both sides of the locking shielding plate (72), and the shielding ridge II (721) at least partially extends and is placed in the main accommodating groove II (62) and the sub-accommodating groove II (63).

7. The high voltage connector according to claim 6, characterized in that: A group of card slots (73) are provided on the main shielding plate (711) and the side shielding plate (712), and a buckle (74) is built into the card slot (73). The buckle (74) is integrally formed with the main shielding plate (711) and the side shielding plate (712).

8. The high voltage connector according to claim 7, characterized in that: The invention also includes a shell (8), wherein the shell (8) includes at least an integrally formed receiving end (81) and a guide end (82), wherein a receiving groove (83) for accommodating the auxiliary inner core (6) and the main inner core (1) is provided in the receiving end (81), and a guide groove (84) is provided in the guide end (82), wherein a guide block (85) fixed on the guide end (82) is provided in the guide groove (84), and a guide hole (86) adapted to the main cable (2) is provided on the guide block (85).

9. The high voltage connector according to claim 8, characterized in that: The guide groove (84) is equipped with a waterproof ring I (841) adapted thereto. The waterproof ring I (841) is sleeved on the main inner core (1), and one end thereof abuts against the guide block (85), and the other end abuts against the tail cap I (842). A locking plate I (843) is fixed on the tail cap I (842), and a locking groove I (844) is provided on the locking plate I (843). A locking block I (845) is also fixed on the guide end (82), and the locking block I (845) can be placed in the locking groove I (844).

10. The high voltage connector according to claim 8, characterized in that: The receiving groove (83) is equipped with a waterproof ring II (831) adapted thereto. The waterproof ring II (831) is sleeved on the distribution cable (3), and one end thereof abuts against the main inner core (1), and the other end abuts against the tail cap II (832). The tail cap II (832) is provided with a locking plate II (833) fixed thereon, and a locking groove II (834) is provided on the locking plate II (833). A locking block II (835) is also fixedly provided on the receiving end (81), and the locking block II (835) can be placed in the locking groove II (834).

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