CN113922123A

CN113922123A - High-voltage connecting mechanism, electric energy transmission device and motor vehicle

Info

Publication number: CN113922123A
Application number: CN202111167061.3A
Authority: CN
Inventors: 王超; 刘川
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2021-10-01
Filing date: 2021-10-01
Publication date: 2022-01-11

Abstract

The invention provides a high-voltage connecting mechanism which comprises a male end connecting mechanism and a female end connecting mechanism, wherein the male end connecting mechanism comprises a first cable, a plug-in terminal, a male end shell and a male end shielding shell, wherein the male end shell is integrally formed with the first cable and the plug-in terminal; the female end connecting mechanism comprises an opposite plug terminal, a second cable, a female end shell which is integrally formed with the opposite plug terminal and the second cable, and a female end shielding shell which is arranged outside the female end shell; the male end connecting mechanism and the female end connecting mechanism are electrically connected with the plug terminals through the plug terminals, the male end shell is assembled and connected with the female end shell, and the male end shielding shell is assembled and connected with the female end shielding shell. Public end shielding shell and the integrative injection moulding of female end shielding shell, processing is simple, and the cost is lower a lot than shielding metal casing, through the grafting cooperation of public end shielding shell and female end shielding shell to and the electricity of cable shielding layer, can effectually shield the inside electromagnetic interference of high-pressure coupling mechanism, reduced other equipment electromagnetic interference.

Description

High-voltage connecting mechanism, electric energy transmission device and motor vehicle

Technical Field

The invention relates to the technical field of charging, in particular to a high-voltage connecting mechanism, an electric energy transmission device and a motor vehicle.

Background

A new energy battery of a new energy automobile supplements energy by using a charging system. Besides the charging seat, the charging system also comprises a high-voltage connecting mechanism connected with the battery system, the charging harness is the most important unit in the high-voltage system of the electric vehicle, the traditional charging harness adopts a copper wire as a charging cable, and the tail end of the copper wire is connected with a plug-in terminal and is electrically connected with the battery system. The high pressure coupling mechanism at present all is the assembly structure connector, has the structure complicacy, the assembly difficulty, and the high scheduling problem of connector cost, the copper product use amount of cable and terminal in addition, and connection processing is more complicated, also is that high pressure coupling mechanism cost remains high the reason.

In addition, in a general charging system, a temperature measuring structure is installed on a charging seat, and a charging harness connector is not provided, but the conduction current is the same, and when the temperature of the charging harness connector rises, the charging harness connector also needs to be monitored and the charging operation needs to be stopped in time so as to protect the safety of the charging harness and the battery system.

Furthermore, the high voltage cable and the data communication cable are used for conducting current and signals. In order to reduce the effect of electromagnetic interference, shielded cables are often used for high voltage cables and data communication cables. At both ends of the cable, the shielding layer of the shielded cable is connected to the shielding device and grounded. The shielded cable generally includes a core and a shield layer arranged in this order from the inside to the outside. To facilitate connection to a docked cable or powered device, the end of the cable is typically connected to a connector. The connectors are generally not shielded by shielding means, resulting in a high level of electromagnetic interference at the connector location. The metal cover is arranged inside or outside the connector, so that the shielding effect can be achieved. However, the metal cover is difficult to process and high in cost; the assembly of the metal cover and the connector is troublesome, and the assembly time is increased; and when the metal cover is in the connecting part, the metal cover is easy to generate short circuit with the guide core, so that the shielding layer is damaged and even the cable is burnt, and serious accidents occur.

Along with the market expansion of electric automobiles, a high-voltage connecting mechanism and an electric energy transmission device which have the advantages of simple structure and cost and can have shielding effect are urgently needed by a charging system.

Disclosure of Invention

The invention aims to provide a high-voltage connecting mechanism, wherein a male end shielding shell and a female end shielding shell are integrally injection-molded, the processing is simple, the cost is much lower than that of a shielding metal shell, and electromagnetic interference inside the high-voltage connecting mechanism can be effectively shielded through the insertion fit of the male end shielding shell and the female end shielding shell and the electric connection with a cable shielding net, so that the electromagnetic interference on other equipment is reduced.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a high-voltage connecting mechanism which comprises a male end connecting mechanism and a female end connecting mechanism, wherein the male end connecting mechanism comprises a first cable, a plug terminal, a male end shell and a male end shielding shell, wherein the male end shell is integrally formed with the first cable and the plug terminal; the female end connecting mechanism comprises a plug-in terminal, a second cable, a female end shell integrally formed with the plug-in terminal and the second cable, and a female end shielding shell arranged outside the female end shell; the male end connecting mechanism and the female end connecting mechanism are electrically connected with the plug-in terminal through the plug-in terminal, the male end shell is connected with the female end shell, and the male end shielding shell is connected with the female end shielding shell.

In a preferred embodiment, the first cable comprises a first shielding layer, and the male shielding shell is at least partially electrically connected with the first shielding layer; the second cable comprises a second shielding layer, and at least part of the female end shielding shell is electrically connected with at least part of the second shielding layer.

In a preferred embodiment, the male end shielding shell includes a first shielding device, the first cable includes a first shielding layer, the first shielding device is disposed on at least a part of the periphery of the first shielding layer, and the first shielding layer is electrically connected to the male end shielding shell through the first shielding device; female end shielding shell includes second shield assembly, the second cable includes the second shielding layer, the second shield assembly sets up the at least partial periphery of second shielding layer, the second shielding layer passes through the second shield assembly with female end shielding shell electric connection.

In a preferred embodiment, a first conductive elastic sheet is arranged on the inner surface of the male end shielding shell, the first cable comprises a first shielding layer, the first conductive elastic sheet is connected with the first shielding layer, and the first conductive elastic sheet exerts pressure on the first shielding layer; the inner surface of the female end shielding shell is provided with a second conductive elastic sheet, the second cable comprises a second shielding layer, the second conductive elastic sheet is connected with the second shielding layer, and the second conductive elastic sheet applies pressure to the second shielding layer.

In a preferred embodiment, the upper pressure applied to the first shielding layer by the first conductive elastic sheet ranges from 0.3N to 95N; the upper pressure range of the second conductive elastic sheet applied to the second shielding layer is 0.3N-95N.

In a preferred embodiment, the first cable comprises a first shielding layer, and the impedance between the male end shielding shell and the first shielding layer is less than 80m Ω; the second cable comprises a second shielding layer, and the impedance between the female-end shielding shell and the second shielding layer is less than 80m omega.

In a preferred embodiment, the transfer impedance of the male or female end shield shell is less than 100m Ω.

In a preferred embodiment, the plug terminal includes a first fixing portion and a plug portion, which are sequentially disposed, the first fixing portion is electrically connected to the conductive portion of the first cable, and the plug portion is sheet-shaped or has a first clamping groove.

In a preferred embodiment, the insertion part is in a sheet shape, and the insertion part at least partially protrudes out of the male end housing, or the male end housing has a first accommodating cavity, and the insertion part at least partially protrudes out of the bottom surface of the first accommodating cavity but does not exceed the male end housing.

In a preferred embodiment, the first clamping groove at least partially protrudes out of the outer wall of the male end housing, or the male end housing is provided with a first opening boss, and the insertion part is at least partially arranged in the first opening boss.

In a preferred embodiment, the male end shielding shell covers at least part of the male end housing, the male end shielding shell having an opening, the insertion part protruding from or within the opening.

In a preferred embodiment, the male end connection mechanism includes an interlocking connector that is at least partially integrally molded in the male end housing.

In a preferred embodiment, the mating terminal includes a second fixing portion and a mating portion, which are sequentially disposed, the second fixing portion is electrically connected to the conductive portion of the second cable, and the mating portion is sheet-shaped or has a second clamping groove; the plug terminal comprises a first fixing part and a plug part which are sequentially arranged, the plug part is electrically connected with the plug part, and the plug part is sheet-shaped or is provided with a first clamping groove.

In a preferred embodiment, a clamping band is sleeved on the outer periphery of the first clamping groove or the second clamping groove, and the clamping band is made of memory alloy.

In a preferred embodiment, the transformation temperature of the memory alloy is set within the range of 40 ℃ to 70 ℃, and the clamping band is in an expanded state in a state that the temperature of the clamping band is lower than the transformation temperature; and under the condition that the temperature of the clamp is higher than the transformation temperature, the clamp is in a clamping state.

In a preferred embodiment, a clamping hoop is sleeved on the periphery of the first clamping groove or the second clamping groove, the clamping hoop comprises a side wall and an elastic unit fixed on the side wall, and the elastic unit is in contact connection with the first clamping groove or the second clamping groove.

In a preferred embodiment, the force applied to the first clip groove or the second clip groove by the elastic unit ranges from 3N to 200N.

In a preferred embodiment, the elastic unit is an elastic rubber body, a spring or a metal elastic sheet.

In a preferred embodiment, the opposite insertion part is in a sheet shape, the opposite insertion part at least partially protrudes out of the female end shell, or the female end shell is provided with a second accommodating cavity, and the opposite insertion part at least partially protrudes out of the bottom surface of the second accommodating cavity but does not exceed the female end shell.

In a preferred embodiment, the opposite insertion part is provided with a second clamping groove, the second clamping groove at least partially protrudes out of the outer wall of the female end shell, or a second opening boss is arranged on the female end shell, and the opposite insertion part is at least partially arranged in the second opening boss.

In a preferred embodiment, the insertion part or the opposite insertion part is formed by stacking a plurality of terminal laminations, the insertion part is provided with a first clamping groove, and the first clamping groove is matched and oppositely inserted and connected with the sheet opposite insertion part; or the opposite insertion part is provided with a second clamping groove, and the second clamping groove is matched and oppositely inserted and connected with the sheet-shaped insertion part.

In a preferred embodiment, the terminal lamination includes a terminal fixing portion to which the first clip groove or the second clip groove is fixed.

In a preferred embodiment, two adjacent terminal fixing portions are connected together by crimping, welding, screwing, riveting or splicing.

In a preferred embodiment, the first clamping groove or the second clamping groove is connected with two adjacent terminal laminations in a contact mode.

In a preferred embodiment, a gap between two adjacent terminal laminations of the first clip groove or the second clip groove is less than 0.2 mm.

In a preferred embodiment, the female end connection mechanism has a high voltage interlock structure that is electrically connected to the interlock connector to form a circuit.

In a preferred embodiment, the male end connection and/or the female end connection has a sealing structure.

In a preferred embodiment, the sealing structure is over-molded on the male end connection mechanism and/or the female end connection mechanism.

In a preferred embodiment, the male connection mechanism and/or the female connection mechanism has at least one temperature measuring structure for measuring the temperature of the plug terminal and/or the counter-plug terminal.

In a preferred embodiment, the temperature measuring structure is attached to the plug terminal and/or the mating terminal for measuring the temperature of the plug terminal and/or the mating terminal.

In a preferred embodiment, the male end connection mechanism and the female end connection mechanism are connected by one or more of a sticking connection, a magnetic attraction connection, a bayonet connection, a plug connection, a latch connection, a bundling connection, a threaded connection, a rivet connection and a welding connection.

In a preferred embodiment, the male-end shielding shell or the female-end shielding shell is injection-molded with a male-end outer insulating shell or a female-end outer insulating shell at least partially on the periphery.

In a preferred embodiment, the mating force between the mating terminal and the mating terminal is between 3N and 150N.

In a preferred embodiment, the mating force between the mating terminal and the mating terminal is between 10N and 130N.

In a preferred embodiment, the contact resistance between the mating terminal and the jack terminal is less than 9m Ω.

In a preferred embodiment, the contact resistance between the mating terminal and the mating terminal is less than 1m Ω.

In a preferred embodiment, the number of times of inserting and pulling between the male end connecting mechanism and the female end connecting mechanism is more than or equal to 10 times.

In a preferred embodiment, the weight of the female end connection mechanism is less than or equal to 215 g.

In a preferred embodiment, the height of the female end connecting mechanism along the plugging direction is less than or equal to 276 mm.

In a preferred embodiment, the surface of the plug terminal and/or the mating terminal is provided at least partially with an electrically conductive corrosion protection layer.

In a preferred embodiment, the conductive portion of the first cable is of unitary construction with the jack terminal.

In a preferred embodiment, the conductive portion of the second cable is of unitary construction with the mating terminal.

The invention provides an electric energy transmission device, which comprises any one of the high-voltage connection mechanisms.

The invention provides a motor vehicle comprising a high-voltage connection according to any one of the preceding claims.

The invention has the characteristics and advantages that:

1. the high-voltage connecting mechanism is provided with the male end shielding shell and the female end shielding shell which are formed by injection molding, is simple to process, has lower cost than a shielding metal shell, can effectively shield electromagnetic interference inside the high-voltage connecting mechanism through the insertion fit of the male end shielding shell and the female end shielding shell and the electric connection with the cable shielding layer, and reduces the electromagnetic interference on other equipment.

2. The male end shielding shell and the female end shielding shell are connected with the cable shielding layer in various ways, so that the shielding shell and the shielding layer can be stably and effectively connected, and a better shielding effect is realized.

3. The terminal and the cable are integrally injection-molded in the male end shell and the female end shell, so that the work of inserting the terminal and the like is not needed, the processing procedures are reduced, the production cost is reduced, and the integrally injection-molded male end shell and the integrally injection-molded female end shell have simple structures, do not need high-precision injection molds, and have good insulation effect due to complete sealing.

4. The plug terminal can be in plug fit with the plug terminal, the plug part or the plug part is formed by stacking a plurality of terminal laminations, the front end of the flaky terminal can be plugged into the strip-shaped groove, the deformation and elasticity weakening problems caused by the over-thickness of the metal plate are reduced through the strip-shaped groove structure, a larger contact area is formed between the terminal and the strip-shaped groove structure, and the connection reliability and the connection conduction effect are guaranteed. The plug terminal and the plug terminal can ensure that the clamping structure is stable, reduce deformation and increase the strength of the plug connection structure.

5. The embedded high-voltage interlocking structure replaces the prior assembled high-voltage interlocking, is fixed in the connector in an integrated injection molding mode, does not need to be assembled, reduces the cost and completely meets the high-voltage interlocking effect.

6. The sealing structure of the connector does not need to be provided with an independent sealing ring, but adopts a secondary injection molding sealing structure to replace the traditional sealing ring, can be directly molded on the connector, and has better injection molding combination property and reduced cost.

7. Adopt temperature measurement mechanism, can monitor the inside terminal temperature of connector alone, avoid because the temperature sensor of other positions damages, and can't monitor the temperature of connector.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an assembly view of the high-voltage connection according to the present invention.

Fig. 2 is an assembly view of the female connection mechanism of the present invention.

Fig. 3 is a schematic structural diagram of the female terminal housing according to the present invention.

Fig. 4 is a schematic view of an assembly structure of a second cable and a mating terminal according to the present invention.

FIG. 5 is a schematic view of the male end connection mechanism of the present invention.

Fig. 6 is a schematic structural view of the male end shielding case of the present invention.

FIG. 7 is a schematic view of a male housing according to the present invention.

Fig. 8 is a schematic view of an assembly structure of the first cable and the jack terminal of the present invention.

Fig. 9 is a schematic view of the interlocking connector structure of the present invention.

Fig. 10 is a schematic view of a high-pressure interlock structure according to the present invention.

FIG. 11 is a schematic cross-sectional view of a male end connection mechanism or a female end connection mechanism of the present invention.

FIG. 12 is another cross-sectional view of the male or female connection mechanism of the present invention.

FIG. 13 is another cross-sectional view of the male or female connection mechanism of the present invention.

Fig. 14 is a schematic structural view of the plug terminal and the opposite plug terminal of the present invention.

FIG. 15 is a schematic view of the clip structure of the present invention.

FIG. 16 is a cross-sectional view of the male and female connection mechanisms of the present invention.

FIG. 17 is a cross-sectional view of another alternative assembly of the male and female connection mechanisms of the present invention.

Wherein:

10. a male end connection mechanism; 11. a first cable; 12. a plug-in terminal; 13. a male end housing; 14. a male-end shield shell; 121. a first fixed part; 122. a plug-in part; 1221. a first clamping groove; 15. an interlocking connector; 16. a male end outer insulating shell;

20. a female end connection mechanism; 21. a second cable; 22. a mating terminal; 23. a female end housing; 24. a female-end shield shell; 221. a second fixed part; 222. a plug-in part; 2221. a second clamping groove; 25. a high-voltage interlock structure; 26. a female end outer insulating shell;

31. a first shielding layer; 32. a first shielding device; 33. a first conductive elastic sheet; 34. a second shielding layer; 35. a second shielding device; 36. a second conductive elastic sheet;

40. a terminal fixing portion;

50. a clamping hoop; 51. a side wall; 52. an elastic unit;

60. a sealing structure;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A high-voltage connection mechanism comprises a male end connection mechanism 10 and a female end connection mechanism 20, wherein the male end connection mechanism 10 comprises a first cable 11, a plug terminal 12, a male end shell 13 integrally formed with the first cable 11 and the plug terminal 12, and a male end shielding shell 14 arranged outside the male end shell 13; the female terminal connection mechanism 20 includes a second cable 21, a mating terminal 22, a female terminal housing 23 integrally formed with the second cable 21 and the mating terminal 22, and a female terminal shield shell 15 disposed outside the female terminal housing 23; the male terminal connection mechanism 10 and the female terminal connection mechanism 20 are electrically connected to the mating terminal 22 through the mating terminal 12, the male terminal housing 13 is connected to the female terminal housing 23, and the male terminal shielding shell 14 is connected to the female terminal shielding shell 24, as shown in fig. 1 to 7.

The high-voltage connecting mechanism is provided with the male end shielding shell 10 and the female end shielding shell 20 which are formed by injection molding, the processing is simple, the cost is much lower than that of a shielding metal shell, and the electromagnetic interference inside the high-voltage connecting mechanism can be effectively shielded through the insertion fit of the male end shielding shell 10 and the female end shielding shell 20 and the electric connection with a cable shielding layer, so that the electromagnetic interference on other equipment is reduced.

In some embodiments, the plug terminal 12 or the opposite plug terminal 22 is made of a conductive metal material containing one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead, which has stable properties and good conductivity, and the preferred material is a material containing copper or a copper alloy or aluminum or an aluminum alloy.

In some embodiments, the conductive portion of the first cable 11 or the second cable 21 is made of one or more materials selected from aluminum, phosphorus, tin, copper, iron, manganese, chromium, titanium, and lithium, wherein the conductive portion of the cable is made of aluminum or aluminum alloy, which is one of the main means for energy saving and cost reduction in recent years. In the field of electrical connection, copper wires are used for conducting current, and copper has high conductivity and good ductility. However, as copper prices have increased, the material cost for using copper materials as the conductive wires has become higher. For this reason, alternatives to metallic copper are being sought to reduce costs. The content of metal aluminum in the earth crust is about 7.73%, the price is relatively low after the refining technology is optimized, the weight of the aluminum is lighter than that of copper, the conductivity is only inferior to that of the copper, and the aluminum can replace part of the copper in the field of electrical connection. Therefore, aluminum is a trend in the field of automotive electrical connection to replace copper.

In one embodiment, the first cable 11 includes a first shielding layer 31, and the male-end shielding shell 14 is at least partially electrically connected to the first shielding layer 31; the second cable 21 includes a second shielding layer 34, and the female-end shielding shell 24 is at least partially electrically connected to the second shielding layer 34, as shown in fig. 11.

In the high-voltage shielded connector, the first cable 11 and the first cable 21 need to transmit large current, large electromagnetic fields are generated around the cables when the current passes through, and in order to prevent the electromagnetic fields generated by the large current from performing electromagnetic interference on electric appliances in the surrounding environment and influencing the normal operation of other electric appliances, the first shielding layer 31 and the second shielding layer 34 are respectively arranged outside the conductive cores of the first cable 11 and the second cable 21, so that the electromagnetic fields generated after the first cable 11 and the second cable 21 are electrified are electromagnetically shielded.

Further, the first cable 11 includes a first shielding layer 31, and the male-end shielding shell 14 is at least partially electrically connected to the first shielding layer 31; the second cable 21 includes a second shielding layer 34, and the female-end shielding shell 24 is at least partially electrically connected to the second shielding layer 34, as shown in fig. 11-13.

The male end shielding shell 14 is at least partially electrically connected with the first shielding layer 31, and the female end shielding shell 24 is at least partially electrically connected with the second shielding layer 34 to form a closed electromagnetic shielding structure, so that the electromagnetic shielding effect can be optimized, and the closed electromagnetic shielding structure is formed, thereby effectively controlling the radiation of electromagnetic waves and achieving a good shielding effect.

In an embodiment, the male end shielding shell 14 includes a first shielding device 32, the first cable 11 includes a first shielding layer 31, the first shielding layer 31 is disposed at least partially on the periphery of the first shielding layer 31, and the first shielding layer 31 is electrically connected to the male end shielding shell 14 through the first shielding device 32; the female end shielding shell 24 includes a second shielding device 35, the second cable 21 includes a second shielding layer 34, the second shielding device 35 is disposed on at least a portion of the outer periphery of the second shielding layer 34, and the second shielding layer 34 is electrically connected to the female end shielding shell 24 through the second shielding device 35, as shown in fig. 12.

The first shielding layer 31 or the second shielding layer 34 may be a shielding net or a conductive foil, the first shielding layer 31 or the second shielding layer 34 is a flexible structure, and the male-end shielding shell 14 and the female-end shielding shell 24 are generally hard structures, when the two are in contact, due to deformation of the first shielding layer 31 or the second shielding layer 34, the male-end shielding shell 14 or the female-end shielding shell 24 and the first shielding layer 31 or the second shielding layer 34 are temporarily disconnected, so that impedance at a contact position is changed, a shielding effect of a connection structure between the first shielding layer 31 of the first cable 11 and the male-end shielding shell 14 or between the second shielding layer 34 of the second cable 21 and the female-end shielding shell 24 is unstable, and signal transmission is affected. Therefore, the first shielding layer 31 and the first shielding device 32, the second shielding device 35 and the second shielding layer 34 are required to be stably connected, and the first shielding layer 31 or the second shielding layer 35 is generally a rigid structure, so as to form a good electrical connection with the male shielding shell 14 or the female shielding shell 24, thereby achieving a stable shielding effect.

In one embodiment, the inner surface of the male end shielding shell 14 is provided with a first conductive elastic sheet 33, the first cable 11 includes a first shielding layer 31, the first conductive elastic sheet 33 is connected with the first shielding layer 31, and the first conductive elastic sheet 33 applies pressure to the first shielding layer 31; the inner surface of the female terminal shielding shell is provided with a second conductive elastic sheet 36, the second cable 24 comprises a second shielding layer 34, the second conductive elastic sheet 36 is connected with the second shielding layer 34, and the second conductive elastic sheet 36 applies pressure to the second shielding layer 34, as shown in fig. 13.

The male end shielding shell 14 is connected with the first shielding layer 31 through the first conductive elastic sheet 33, the female end shielding shell 24 is connected with the second shielding layer 34 through the second conductive elastic sheet 36, at least part of the first conductive elastic sheet 33 and the second conductive elastic sheet 36 has elasticity, and the part has an inward contraction trend so as to compress the first cable 11 or the second cable 21, so that the stability of the electrical connection between the male end shielding shell 14 and the first shielding layer 31 and between the female end shielding shell 24 and the second shielding layer 34 is ensured, on the other hand, the first cable 11 can be in contact connection with the first conductive elastic sheet 33 when being inserted into the male end shielding shell 14, the second cable 21 can be in contact connection with the second conductive elastic sheet 36 when being inserted into the female end shielding shell 24, and the assembling and processing man-hours are saved, as shown in fig. 11-13.

Further, the upper pressure applied by the first conductive elastic sheet 33 to the first shielding layer 31 ranges from 0.3N to 95N; the upper pressure applied by the second conductive dome 36 to the second shielding layer 34 ranges from 0.3N to 95N.

In order to verify the influence of the pressure applied by the first conductive elastic sheet 33 to the first shielding layer 31 on the contact resistance between the first conductive elastic sheet 33 and the first shielding layer 31, or the influence of the pressure applied by the second conductive elastic sheet 36 to the second shielding layer 34 on the contact resistance between the second conductive elastic sheet 36 and the second shielding layer 34, the inventor performed a pertinence test, taking the pressure applied by the first conductive elastic sheet 33 to the first shielding layer 31 as an example, the inventor selects the first conductive elastic sheet 33 and the first shielding layer 31 with the same shape and the same size, and designs the pressure between the first conductive elastic sheet 33 and the first shielding layer 31 as different pressures to observe the contact resistance between the first conductive elastic sheet 33 and the first shielding layer 31.

Table 1: the pressure of different electrically conductive shell fragments and shielding layer influences the contact resistance:

the contact resistance is detected by measuring the resistance at the contact position of the first conductive elastic sheet 33 and the first shielding layer 31 using a micro resistance measuring apparatus, and reading the value of the micro resistance measuring apparatus, in this embodiment, the contact resistance is less than 50 μ Ω, which is an ideal value.

As can be seen from table 1, when the pressure between the first conductive elastic sheet 33 and the first shielding layer 31 is less than 0.3N, the contact resistance between the two is higher than the ideal value due to too small bonding force, which is not satisfactory. When the pressure between the first conductive elastic sheet 33 and the first shielding layer 31 is greater than 95N, the contact resistance is not significantly reduced, the material selection and processing are more difficult, and the first shielding layer 31 is damaged by an excessive pressure. Therefore, the inventors set the upper pressure range of the first conductive dome 33 applied to the first shielding layer 31 to be 0.3N-95N; the upper pressure applied by the second conductive dome 36 to the second shielding layer 34 ranges from 0.3N to 95N.

In addition, the inventor finds that when the pressure between the first conductive elastic sheet 33 and the first shielding layer 31 is greater than 0.5N, the contact resistance between the first conductive elastic sheet 33 and the first shielding layer 31 is relatively good, the trend of reduction is fast, and the pressure between the first conductive elastic sheet 33 and the first shielding layer 31 is less than 50N, so that the conductive elastic sheet is convenient to manufacture, install and use and low in cost, and therefore, the inventor prefers that the upper pressure applied to the first shielding layer 31 by the first conductive elastic sheet 33 is in the range of 0.5N-50N; the upper pressure applied by the second conductive dome 36 to the second shielding layer 34 ranges from 0.5N to 50N.

In an embodiment, the first conductive elastic sheet 33 and the male shielding shell 14, and the second conductive elastic sheet 36 and the female shielding shell 24 are connected by welding, bonding, integral injection molding, embedding or clamping.

The welding mode, including laser welding, ultrasonic welding, resistance welding, pressure diffusion welding or mode such as brazing, adopt concentrated heat energy or pressure, make first electrically conductive shell fragment 33 and public end shielding shell 14 or second wire shell fragment 36 and female end shielding shell 24 internal surface contact position produce the melt connection, the welding mode is connected firmly, also can realize the connection of xenogenesis material, because the contact position fuses mutually, electrically conductive effect is better.

The bonding mode is to bond the first conductive elastic sheet 33 and the inner surface of the male end shielding shell 14 or the second conductive elastic sheet 36 and the inner surface of the female end shielding shell 24 together by using conductive adhesive, and in this mode, no equipment is needed, and the first conductive elastic sheet 33 and the inner surface of the male end shielding shell 14 or the inner surface of the second conductive elastic sheet 36 and the inner surface of the female end shielding shell 24 are fully and electrically connected through the conductive adhesive, so that the bonding mode has a good conductive effect, but the bonding strength is low, and the bonding mode is suitable for use environments with low requirements on the connection strength, and low melting points or low strengths of the inner surfaces of the conductive elastic sheet 33 and the male end shielding shell 14 or the female end shielding shell 24.

The integral injection molding mode is that the first conductive elastic sheet 33 or the second conductive elastic sheet 36 is placed into an injection mold, and when the connector is processed, the connector is directly and integrally injected on the inner surface of the male end shielding shell 14 or the inner surface of the female end shielding shell 24, so that the processing is simple and rapid, other assembly processes are not needed, and the assembly time is saved.

The embedding manner is to set a groove on the inner surface of the male end shielding shell 14 or the female end shielding shell 24, and then embed the first conductive elastic piece 33 or the second conductive elastic piece 36 into the groove, so that the first conductive elastic piece 33 or the second conductive elastic piece 36 is fixed on the inner surface of the male end shielding shell 14 or the female end shielding shell 24.

The clamping manner is to arrange a claw or a clamping groove on the inner surface of the male end shielding shell 14 or the female end shielding shell 24, arrange a corresponding clamping groove or claw on the first conductive elastic sheet 33 or the second conductive elastic sheet 36, and then assemble and connect the claw and the clamping groove, so that the first conductive elastic sheet 33 or the second conductive elastic sheet 36 is fixed on the inner surface of the male end shielding shell 14 or the female end shielding shell 24.

The male end shielding shell 14 and the female end shielding shell 24 of the invention are connected with the cable shielding net in various ways, so that the shielding shells and the shielding net can be stably and effectively connected, and a better shielding effect is realized.

In one embodiment, the first cable 11 includes a first shielding layer 31, and the impedance between the male end shielding shell 14 and the first shielding layer 31 is less than 80m Ω; the second cable 24 includes a second shield layer 34, and the impedance between the shell of the female end shield 24 and the second shield layer 34 is less than 80m Ω.

The impedance between the male shielding shell 14 and the first shielding layer 31 and the impedance between the female shielding 24 and the second shielding layer 34 are as small as possible, so that the current generated by the first shielding layer 31 and the second shielding layer 34 can flow back to the energy source or the grounding position without hindrance; the impedance between the male-end shielding shell 14 and the first shielding layer 31 and the impedance between the female-end shielding shell 24 and the second shielding layer 34 are relatively large, so that a relatively large current is generated between the male-end shielding shell 14 or the female-end shielding shell 24 and the first shielding layer 31, and a relatively large radiation is generated at the connection between the first cable 11 and the plug terminal 12 or at the connection between the second cable 21 and the plug terminal 22.

Taking the influence of the impedance value between the male-end shielding shell 14 and the first shielding layer 31 on the shielding effect of the male-end connecting mechanism 10 as an example, the inventor selects the first cable 11 and the plug-in terminal 12 with the same specification, selects the impedance between the different male-end shielding shells 14 and the first shielding layers 31, manufactures a series of sample pieces of the connecting structure of the male-end connecting mechanism 10, and seals the opening of the male-end shielding shell 14 with a metal shielding device, thereby ensuring that the whole male-end shielding shell 14 is in a completely shielding state. The shielding effect of the connection structure of the male shielding shell 14 and the first shielding layer 31 is tested, and the experimental results are shown in table 2 below, where in this embodiment, the shielding performance value greater than 40dB is an ideal value.

The shielding performance value test method comprises the following steps: the test instrument outputs a signal value (this value is a test value of 2) to the first cable 11, and a detection device is provided outside the male-end connection mechanism 10, and this detection device detects a signal value (this value is a test value of 1). Screening performance value 2-test value 1.

Table 2: influence of impedance between the male-end shield shell 14 and the first shield layer 31 on the shielding performance

As can be seen from table 2, when the impedance value between the male-end shielding shell 14 and the first shielding layer 31 is greater than 80m Ω, the shielding performance value of the male-end connecting mechanism 10 is less than 40dB, which does not meet the requirement of the ideal value, and when the impedance value between the male-end shielding shell 14 and the first shielding layer 31 is less than 80m Ω, the shielding performance values of the male-end connecting mechanism 10 all meet the requirement of the ideal value, and the trend is better and better, and similarly, the test effect of the female-end shielding shell 24 is the same as the test effect of the male-end shielding shell 14, therefore, the inventor sets that the first cable 11 includes the first shielding layer 31, and the impedance between the male-end shielding shell 14 and the first shielding layer 31 is less than 80m Ω; the second cable 24 includes a second shield layer 34, and the impedance between the shell of the female end shield 24 and the second shield layer 34 is less than 80m Ω.

In one embodiment, the transfer impedance of the male shielding shell 14 or the female shielding shell 24 is less than 100m Ω, the shielding material is usually used to characterize the shielding effect of the male shielding shell 14 or the female shielding shell 24, and the smaller the transfer impedance, the better the shielding effect. The transfer impedance of the male shielding shell 14 or the female shielding shell 24 Is defined as the ratio of the differential mode voltage U induced by the shielding body per unit length to the current Is passing through the surface of the shielding body, namely:

Z_T＝U/I_Sit can be understood that the transferred impedance of the male or

female shielding shell

14, 24 converts the male or

female shielding shell

14, 24 current into differential mode interference. The smaller the transfer impedance, the better, namely, the differential mode interference conversion is reduced, and the better shielding performance can be obtained.

In order to verify the influence of the male-end shielding shell 14 or the female-end shielding shell 24 with different transfer impedance values on the shielding effect of the high-voltage connecting mechanism connecting structure, the inventor selects the first cable 11 and the plug-in terminal 12 with the same specification, adopts the male-end shielding shell 14 with different transfer impedance values, manufactures a series of sample pieces of the connecting structure of the male-end connecting mechanism 10, seals the opening of the male-end shielding shell 14 by using a metal shielding device, and ensures that the whole male-end shielding shell 14 is in a complete shielding state. The shielding effect of the connection structure of the male shielding shell 14 and the first shielding layer 31 is tested, and the experimental results are shown in table 3 below, where in this embodiment, the shielding performance value greater than 40dB is an ideal value.

Table 3: effect of the transfer impedance of the male end shield shell 14 on the shielding performance

As can be seen from table 3 above, when the transfer impedance value of the male-end shielding shell 14 is greater than 100m Ω, the shielding performance value of the male-end connecting mechanism 10 is less than 40dB, which does not meet the requirement of the ideal value, and when the transfer impedance value of the male-end shielding shell 14 is less than 100m Ω, the shielding performance values of the male-end connecting mechanism 10 all meet the requirement of the ideal value, and the trend is better and better, and similarly, the test effect of the female-end shielding shell 24 is the same as the test effect of the male-end shielding shell 14, therefore, the inventor sets the transfer impedance of the male-end shielding shell 14 or the female-end shielding shell 24 to be less than 100m Ω.

In one embodiment, the material of the male end shield shell 14 or the female end shield shell 24 comprises one or more of a conductive ceramic, a carbon-containing conductor, a solid electrolyte, a mixed conductor, and a conductive polymer material.

To demonstrate the influence of different materials on the conductivity of the male shielding shell 14 or the female shielding shell 24, the inventor takes the male shielding shell 14 as an example, and manufactures a sample of the male shielding shell 14 with the same specification and size and different materials, and respectively tests the conductivity of the male shielding shell 14, and the experimental result is shown in table 4 below, in this embodiment, the conductivity of the male shielding shell 14 is greater than 99% as an ideal value.

Table 4: influence of different materials on the conductivity of the male-end shielding shell 14

As can be seen from table 4 above, the conductivity of the male shielding shell 14 made of the selected material is within the desired range, so the inventor sets the material of the male shielding shell 14 to be one or a combination of more of conductive ceramics, carbon-containing conductors, solid electrolytes, mixed conductors, and conductive polymer materials.

Further, the carbon-containing conductor contains one or more of graphite powder, carbon nanotube material and graphene material.

Further, the conductive polymer material is a polymer material containing metal particles, the material of the metal particles contains one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium and beryllium, and the material of the polymer material is polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene/hexafluoropropylene copolymer, ethylene/tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, poly terephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, silicone rubber, cross-linked polyolefin, ethylene propylene rubber, ethylene/vinyl acetate copolymer, chloroprene rubber, natural rubber, styrene butadiene rubber, nitrile rubber, butadiene rubber, isoprene rubber, ethylene propylene rubber, styrene butadiene rubber, butadiene styrene-acrylonitrile rubber, butadiene rubber, isoprene rubber, ethylene propylene rubber, butadiene rubber, styrene-acrylonitrile rubber, styrene-propylene rubber, styrene-butadiene rubber, styrene-acrylonitrile rubber, styrene-butadiene rubber, styrene-butadiene rubber, styrene-butadiene rubber, styrene-butadiene rubber, styrene-styrene rubber, styrene-butadiene rubber, styrene-butadiene rubber, styrene-butadiene rubber, styrene-butadiene rubber, styrene-butadiene rubber, styrene-butadiene rubber, and/styrene-butadiene rubber, styrene-butadiene rubber, styrene-styrene rubber, and/styrene rubber, styrene-butadiene rubber, and/styrene rubber, styrene-butadiene rubber, and/styrene-butadiene rubber, and/styrene-butadiene rubber, and, One or more of neoprene, butyl rubber, fluororubber, urethane rubber, polyacrylate rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, chlorinated polyethylene rubber, chlorosulfonated rubber, styrene butadiene rubber, hydrogenated nitrile rubber, polysulfide rubber, crosslinked polyethylene, polycarbonate, polysulfone, polyphenylene oxide, polyester, phenol resin, urea formaldehyde, styrene-acrylonitrile copolymer, polymethacrylate, polyoxymethylene resin.

The properties of the material are illustrated below.

Polyoxymethylene is a smooth, glossy, hard and dense material with a yellowish or white color that can be used for a long period at temperatures ranging from-40 ℃ to 100 ℃. Its wear resistance and self-lubricating property are superior to most engineering plastics, and it also has good oil-resisting and peroxide-resisting properties.

Polycarbonate is colorless and transparent, heat-resistant, impact-resistant and flame-retardant at BI level, and has good mechanical properties at common use temperature. Compared with polymethyl methacrylate with similar performance, the polycarbonate has good impact resistance, high refractive index and good processing performance, and has high-grade flame retardant performance without additives.

The polyamide has the advantages of no toxicity, light weight, excellent mechanical strength, better wear resistance and corrosion resistance, and can replace metals such as copper and the like to be applied to the manufacturing of bearings, gears, pump blades and other parts in the industries such as machinery, chemical engineering, instruments, automobiles and the like.

In one embodiment, the conductive polymer material is processed into the male-end shielding shell 14 or the female-end shielding shell 24 through one or more processes selected from an extrusion process, an injection molding process, a dipping process, a blow molding process, a foaming process, a spraying process, a printing process, and a 3D printing process.

The injection molding process is a process for manufacturing a semi-finished product with a certain shape by pressurizing, injecting, cooling, separating and the like molten raw materials.

The plastic dipping process is a process that after a workpiece is electrically heated, the workpiece reaches a certain temperature and is dipped into plastic dipping liquid, and the plastic dipping liquid is solidified on the workpiece.

The blow molding process is to extrude a tubular parison by an extruder, put the parison into a mold while the parison is hot, introduce compressed air into the mold for inflation so as to enable the parison to reach a mold cavity shape, and obtain a product after cooling and shaping. The advantages are that: it is suitable for various plastics, and can be used for producing large-scale products, and its production efficiency is high, parison temperature is uniform and equipment investment is less.

The foaming process is that a honeycomb or cellular structure is formed by adding and reacting a physical foaming agent or a chemical foaming agent in a foaming forming process or a foaming polymer material. The basic steps of foam molding are the formation of a bubble nucleus, the growth or enlargement of the bubble nucleus, and the stabilization of the bubble nucleus. At a given temperature and pressure, the solubility of the gas decreases so that saturation is reached, allowing excess gas to escape and form bubbles, thereby effecting nucleation.

The spray coating process is a coating method of dispersing a spray material into uniform and fine droplets by a spray gun or a disc atomizer with the aid of pressure or centrifugal force and applying the droplets to the surface of an object to be coated. It can be divided into air spraying, airless spraying, electrostatic spraying and various derivatives of the basic spray pattern described above.

The printing process refers to a mode of transferring ink or other viscous fluid materials to the surface of an object to be coated by using a printing plate, and comprises a screen printing mode, a relief printing mode, a flexographic printing mode, a gravure printing mode or a flat printing mode.

The 3D printing process is a kind of rapid prototyping technology, also called additive manufacturing, and is a technology for constructing an object by using an adhesive material such as powdered metal or plastic and the like and by printing layer by layer on the basis of a digital model file.

In one embodiment, the plug terminal 12 includes a first fixing portion 121 and a plug portion 122 sequentially disposed, the first fixing portion 121 is electrically connected to the conductive portion of the first cable 11, and the plug portion 122 is sheet-shaped or has a first clamping groove 1221, as shown in fig. 8 and 14. The first fixing portion 121 is electrically connected to a conductive portion of the first cable 11, and functions to conduct current. The mating portion 122 of the mating terminal 12 is connected to the mating terminal 22 by mating, thereby achieving electrical connection and current conduction between the connectors.

Specifically, the first fixing portion 121 and the conductive portion at the front end of the first cable 11 are connected by one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding, magnetic induction welding, screwing, clamping, splicing, and crimping.

The resistance welding method is a method of welding by applying a strong current to a contact point between an electrode and a workpiece to generate heat from a contact resistance, and the first fixing portion 121 and the first cable 11 are welded by resistance welding.

The friction welding method is a method of welding by plastically deforming a workpiece under pressure using heat generated by friction of a workpiece contact surface as a heat source, and the first fixing portion 121 and the first cable 11 are welded by friction welding.

The ultrasonic welding method is a method in which a high-frequency vibration wave is transmitted to the surfaces of two objects to be welded, and the surfaces of the two objects are rubbed against each other under pressure to fuse the molecular layers, and the first fixing portion 121 and the first cable 11 are ultrasonically welded.

The arc welding method is a method of connecting metals by converting electric energy into thermal energy and mechanical energy required for welding using an electric arc as a heat source and utilizing a physical phenomenon of air discharge, and the main methods include shielded metal arc welding, submerged arc welding, gas shielded welding, and the like.

The laser welding method is an efficient and precise welding method using a laser beam with high energy density as a heat source.

The electron beam welding mode is that accelerated and focused electron beams are used to bombard the welding surface in vacuum or non-vacuum to melt the workpiece to be welded for welding.

The pressure welding method is a method of applying pressure to a workpiece to bring the joining surfaces into close contact with each other to generate a certain plastic deformation, thereby completing welding.

Diffusion welding refers to a solid state welding method in which a workpiece is pressed at a high temperature without visible deformation and relative movement.

The magnetic induction welding mode is that two workpieces to be welded produce instantaneous high-speed collision under the action of strong pulse magnetic field, and the surface layer of the material makes the atoms of the two materials meet in the interatomic distance under the action of very high pressure wave, so that a stable metallurgical bonding is formed on the interface. Which is one type of solid state cold welding, the first fixing portion 121, which may or may not have similar properties, may be welded with the first cable 11.

The screw connection mode refers to a screw connection, and the connected piece is connected into a whole by a screw element (or a screw thread part of the connected piece) to form a detachable connection. The common threaded connecting parts include bolts, studs, screws, set screws and the like, and are mostly standard parts.

The clamping connection mode is that corresponding clamping jaws or clamping grooves are respectively arranged on the connecting end or the connecting surface, and the clamping jaws are assembled to be connected together. The clamping mode has the advantages of quick connection and detachability.

The splicing mode is that corresponding grooves and protrusions are respectively arranged on the connecting ends or the connecting surfaces, and the connecting ends or the connecting surfaces are assembled through the mutual joggling or splicing of the grooves and the protrusions so as to be connected together. The splicing mode has the advantages of stable connection and detachability.

The crimping mode is a production process that the connecting end and the connecting surface are assembled and then are punched into a whole by using a crimping machine. The crimping has an advantage of mass productivity, and a product of stable quality can be rapidly manufactured in a large quantity by using an automatic crimping machine.

Through the above connection manner, according to the actual usage environment, the first fixing portion 121 of the plug terminal 12 and the actual usage state of the first cable 11 can be selected to be a proper connection manner or a combination of connection manners, so as to achieve effective electrical connection.

In one embodiment, as shown in fig. 16 and 17, the plug portion 122 is a plate shape, and the plug portion 122 at least partially protrudes out of the male housing 13, or the male housing 13 has a first receiving cavity, and the plug portion 122 at least partially protrudes out of the bottom surface of the first receiving cavity but does not exceed the male housing 13. The insertion part 122 is at least partially protruded out of the male housing 13, and can be directly inserted into the insertion terminal 12 of the female housing 23, or can be disposed in the first accommodating cavity of the male housing 13, and the insertion terminal 12 of the female housing 23 extends into the first accommodating cavity and is inserted into the insertion part 122.

Further, as shown in fig. 16 and 17, the insertion part 122 has a first clamping groove 1221, the first clamping groove 1221 at least partially protrudes out of the outer wall of the male housing 13, or a first opening boss is disposed on the male housing 13, and the insertion part 122 is at least partially disposed in the first opening boss.

In the above embodiment, the mating part 122 is at least partially protruded from the male housing 13, and can be mated and connected with the mating terminal 12 provided in the first opening boss. Or the male housing 13 has a first receiving cavity, and the inserting portion 122 at least partially protrudes from the bottom surface of the first receiving cavity, but does not exceed the male housing 12, and can be connected with the inserting terminal 12 protruding from the outer wall of the female housing 23 by inserting.

Further, as shown in fig. 16 and 17, the male end shielding shell 14 covers at least a portion of the male end housing 13, the male end shielding shell 14 has an opening, and the insertion part 122 protrudes from or is in the opening. The plug part 122 in the male end housing 13 can be connected with the plug terminal 12 in a plug-in manner, and meanwhile, the male end shielding shell 14 can be connected with the female end shielding shell 24 in a plug-in manner, so that shielding electric connection is realized.

In one embodiment, as shown in fig. 9, the male end connection mechanism 10 includes an interlocking connector 15, the interlocking connector 15 being at least partially integrally molded into the male end housing 13. The high-voltage interlocking is a safety design method for monitoring the integrity of a high-voltage circuit by using a low-voltage signal, a specific high-voltage interlocking implementation form has different designs for different projects, and the high-voltage interlocking is used for monitoring the accidental disconnection of the high-voltage circuit, so that the damage to an automobile caused by sudden power loss is avoided. In the embodiment of the present invention, the high voltage interlock, one end of the interlock connector 15, is provided with two pairs of pins, and two U-shaped or V-shaped low voltage circuits electrically connected to the pins do not need to be installed, and can be directly molded in the male end housing 13 in an integral injection molding manner, and are connected to the high voltage interlock structure 25 in the female end connecting mechanism 20 in a matching manner, so as to form a low voltage monitoring circuit, as shown in fig. 16 and 17, when the charging harness connector in the embodiment is accidentally disconnected, the interlock connector 15 and the high voltage interlock structure 25 are also simultaneously disconnected, and the low voltage monitoring circuit can alarm the central control system, so that the vehicle can be controlled without damage due to sudden loss of power.

In one embodiment, as shown in fig. 4 and 14, the mating terminal 22 includes a second fixing portion 221 and a mating portion 222, which are sequentially disposed, the second fixing portion 221 is electrically connected to the conductive portion of the second cable 21, and the mating portion 222 is sheet-shaped or has a second clamping groove 2221; the mating terminal 12 includes a first fixing portion 121 and a mating portion 122 sequentially disposed, the mating portion 222 is electrically connected to the mating portion 122, and the mating portion 122 is sheet-shaped or has a first clamping groove 1221. The sheet-shaped mating part 222 is mated and plugged with the first clamping groove 1221 of the mating part 122, or the sheet-shaped mating part 122 is mated and plugged with the second clamping groove 2221 of the mating part 222, so that the electrical connection between the mating terminal 22 and the mating terminal 12 is realized, and the electrical connection between the first cable 11 and the second cable 21 is also realized, so that the current can be conducted safely and stably.

In one embodiment, the second fixing portion 221 and the conductive portion at the front end of the second cable 21 are connected by one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding, magnetic induction welding, screwing, snapping, splicing and crimping. This scheme is the same as the connection manner of the first fixing portion 121 and the first cable 11, and is not described again.

In one embodiment, as shown in fig. 14-15, the clamping band 50 is sleeved on the outer circumference of the first clamping groove 1221 or the second clamping groove 2221, and the clamping band 50 is made of memory alloy. A memory alloy is a memory smart metal whose microstructure has two relatively stable states, at high temperatures the alloy can be brought into any desired shape, at lower temperatures the alloy can be stretched, but if it is reheated it remembers its original shape and returns, the crystal structure of the memory alloy above and below its transformation temperature being different, but the temperature changes above and below the transformation temperature the memory alloy contracts or expands causing its morphology to change. In some embodiments, the memory alloy is a nickel titanium alloy.

In one embodiment, the transformation temperature of the memory alloy is set within the range of 40 ℃ to 70 ℃, and the clamp 50 is in an expanded state in a state where the temperature of the clamp 50 is lower than the transformation temperature; in a state where the temperature of the clip 50 is higher than the transformation temperature, the clip 50 is in a clamped state.

Generally, the metamorphosis temperature is selected to be between 40 ℃ and 70 ℃, because if the metamorphosis temperature is lower than 40 ℃, the ambient temperature of the plug terminal 12, the opposite plug terminal 22 and the clamp 50 can also reach approximately 40 ℃ under the condition of no conducting current, at this time, the clamp 50 is in a clamping state, the strip-shaped groove of the first clamp groove 1221 or the second clamp groove 2221 of the plug terminal 12 or the opposite plug terminal 22 becomes small, the plug terminal 12 cannot be inserted into the opposite plug terminal 22, and the plug structure of the plug terminal 12 and the opposite plug terminal 22 cannot be plugged, and thus the work cannot be performed.

At room temperature, the plug terminal 12 and the opposite plug terminal 22 start to conduct electricity after being oppositely plugged, and since the clamp 50 is in an expanded state just before being oppositely plugged, the contact area between the plug terminal 12 and the opposite plug terminal 22 is small, and the current is large, so that the plug terminal 12, the opposite plug terminal 22 and the clamp 50 start to heat up after being plugged, and if the metamorphic temperature is higher than 70 ℃, the temperature rise time of the clamp 50 is long, the plugging structure of the plug terminal 12 and the opposite plug terminal 22 is in a large current state for a long time, electrical aging is easily caused, and in serious cases, the plugging structure of the plug terminal 12 and the opposite plug terminal 22 is overloaded and damaged, and unnecessary loss is caused.

Therefore, in general, the transformation temperature of the memory alloy is set to be between 40 ℃ and 70 ℃.

The clamp 50 has a memory function, when the abnormal temperature is lower than the abnormal temperature, the strip-shaped grooves of the first clamping groove 1221 and the second clamping groove 2221 of the plug-in terminal 12 and the plug-in terminal 22 are usually in an expanded state, at the moment, the plug-in terminal 12 and the plug-in terminal 22 can be butted without insertion force, and the electric appliance can be conveniently butted and plugged by an operator easily. The plug terminal 12 and the opposite plug terminal 22 conduct current in work, the temperature of the plug terminal 12 and the opposite plug terminal 22 gradually rises due to the effect of the resistor, when the temperature rises to be higher than the abnormal temperature, the clamping hoop 50 can radially contract, the contact area and the contact force of the strip-shaped grooves of the first clamping groove 1221 and the second clamping groove 2221 of the plug terminal 12 and the opposite plug terminal 22 are increased through the rise of the temperature, the contact reliability is improved, the work is easier due to the fact that the requirement of the insertion force is omitted, and the work efficiency is improved.

In one embodiment, as shown in fig. 15, a clip 50 is sleeved around the first clip groove 1221 or the second clip groove 2221, the clip 50 includes a side wall 52 and an elastic unit 52 fixed on the side wall, and the elastic unit 52 is connected to the first clip groove 1221 or the second clip groove 2221 in a contact manner. The clamping hoop 50 applies pressure to the plug terminal 12 through the elastic unit 52 arranged on the side wall, so that the first clamping groove of the plug terminal 12 can clamp the opposite plug terminal 22, the contact area between the plug terminal 12 and the opposite plug terminal 22 is ensured, the contact resistance is reduced, and the conductivity is improved.

Further, the force applied to the outside of the first clip groove 1221 or the second clip groove 2221 by the elastic unit 52 ranges from 3N to 200N.

In order to verify the influence of the pressure applied by the elastic unit 52 to the first clamping groove 1221 or the second clamping groove 2221 on the contact resistance and the plugging/unplugging condition after the plugging/unplugging of the plug terminal 12 and the plug terminal 22, taking the example of sleeving the clamping hoop 50 on the plug terminal 12, the inventor selects the plug terminal 12 and the plug terminal 22 with the same size and specification, and selects the plug terminal 22 with the same eccentricity and the plug terminal 12 sleeved with the clamping hoop 50 to perform plugging/unplugging, and tests the contact resistance between the plugged terminals respectively, and in multiple plugging/unplugging experiments, the ratio of the successful plugging/unplugging of the plug terminal 12 is shown in table 5.

The contact resistance test method comprises the following steps: using the micro resistance meter, one end of the measuring end of the micro resistance meter is placed on the plug terminal 12, and the other end is placed on the opposite plug terminal 22, and the same position is placed for each measurement, and then the contact resistance reading on the micro resistance meter is read. In this example, a contact resistance of more than 1m Ω is not acceptable.

The method for testing the plug-in success rate comprises the following steps: the pressure value applied to the plug terminal 12 by each elastic unit 32 is compared with 100 plug terminals 22 with the same eccentricity, and the number of successful plugs is recorded and multiplied by 100% compared with the total number. In the present embodiment, the success rate of the pair insertion is less than 95%.

Table 5: effect of different pressures on contact resistance and on insertion success

As can be seen from table 5, when the pressure applied to the mating terminal 12 by the elastic unit 52 is less than 3N, although the mating success rate is acceptable, the contact resistance between the mating terminal 12 and the mating terminal 22 is greater than 1m Ω, and the contact resistance is too large; when the pressure applied to the jack terminal 12 by the elastic unit 52 is greater than 200N, the application requirement cannot be satisfied with a plug success rate of less than 95%, and therefore, the inventor set the pressure applied to the jack terminal 12 by the elastic unit 52 to be 3N to 200N.

In one embodiment, the elastic unit 52 is an elastic rubber body, a spring or a metal spring sheet. The elastic unit 52 may be an elastic rubber body, and ensures a pressure applied to the socket terminal 12 or the counterpart socket terminal 22 by means of an elastic force compressed by the elastic rubber body; the elastic unit 52 may be a compression spring, which is compressed by the compression spring to ensure the pressure applied to the plug terminal 12 and the opposite plug terminal 22; the elastic unit 52 may also be a metal elastic sheet, which is integrally formed with the clip 50, and may be a single-ended elastic sheet with one end fixed and one free end, or a double-ended elastic sheet with two ends fixed and a middle protrusion, which ensures a pressure applied to the plug terminal 12 or the opposite plug terminal 22 by the elastic force of the metal elastic sheet.

In one embodiment, as shown in fig. 16 and 17, the opposite insertion portion 222 is a plate shape, and the opposite insertion portion 222 at least partially protrudes out of the female housing 23, or the female housing 23 has a second receiving cavity, and the opposite insertion portion 222 at least partially protrudes out of the bottom surface of the second receiving cavity but does not exceed the female housing 23. The plug-in part 222 protruding out of the female end housing 23 can be connected with the plug-in part 122 recessed in the male end housing 13 in a plug-in manner to form a plug-in structure and realize electrical connection; the opposite plug part 222 can also be recessed in the female housing 23 to form a plug structure and realize electrical connection with the opposite plug connection of the plug part 122 protruding from the male housing 13.

In one embodiment, as shown in fig. 16 and 17, the opposite insertion part 222 is provided with a second clamping groove 2221, the second clamping groove 2221 at least partially protrudes out of the outer wall of the female end housing 23, or the female end housing 23 is provided with a second opening boss, and the opposite insertion part 222 is at least partially arranged in the second opening boss. The plug-in part 222 protruding out of the female end housing 23 can be connected with the plug-in part 122 recessed in the male end housing 13 in a plug-in manner to form a plug-in structure and realize electrical connection; the opposite plug part 222 can also be recessed in the second opening boss of the female housing 23 to form a plug structure and realize electrical connection with the opposite plug part 122 protruding from the male housing 13.

In one embodiment, as shown in fig. 16 and 17, the mating part 122 or the mating part 222 is formed by stacking a plurality of terminal laminations, the mating part 122 has a first clamping groove 1221, and the first clamping groove 1221 is mated and mated with the mating part 222; or the mating part 222 has a second clip groove 2221, and the second clip groove 2221 is mated with the mating part 122.

The mating terminal 22 can be mated with the mating terminal 12, the mating part 122 or the mating part 222 is stacked and distributed by a plurality of terminal laminations, the mating part 122 has a first clamping groove 1221, the first clamping groove 1221 is mated and connected with the mating part 222, or the mating part 222 has a second clamping groove 2221, and the second clamping groove 2221 is mated and connected with the mating part 122.

The front end of the sheet-shaped terminal can be inserted into the first clamping groove 1221 or the second clamping groove 2221, the problems of deformation and elasticity weakening caused by over-thickness of the metal plate are reduced through the structure of the first clamping groove 1221 or the second clamping groove 2221, a larger contact area is formed between the metal plate and the clamping groove, and the reliability and the electric conduction effect of connection are guaranteed. The opposite plug terminal 22 and the plug terminal 12 can ensure the stability of the clamping structure, reduce the deformation and increase the strength of the plug connection structure.

In one embodiment, the terminal laminations are stamped or cut or bent from sheet material. The terminal lamination is in a sheet shape and is distributed in a laminated manner, so that the inserting part 122 or the opposite inserting part 222 has high mechanical connection performance, and meanwhile, the conductive connection performance between the inserting part 122 or the opposite inserting part 222 is guaranteed. The processing mode of plate punching or cutting is simple, and the technology is mature, can be fast large batch processing terminal lamination, saves the processing cost, improves production efficiency.

In one embodiment, as shown in fig. 14, the terminal lamination includes a terminal fixing portion 40, and the first clamping groove 1221 or the second clamping groove 2221 is fixed to the terminal fixing portion 40. The multi-layered terminal laminates are stacked and coupled together by the terminal fixing portions 40 and fixedly coupled to the first fixing portions 121 and the second fixing portions 221.

In one embodiment, the two adjacent terminal fixing portions 40 are connected together by crimping, welding, screwing, riveting or splicing, which ensures the stability of the electrical connection.

Crimping is a production process in which adjacent terminal fixing portions 40 are assembled and then pressed together by a crimping machine. The crimping has an advantage of mass productivity, and a product of stable quality can be rapidly manufactured in a large quantity by using an automatic crimping machine.

The welding is performed by friction welding, resistance welding, ultrasonic welding, arc welding, pressure welding, laser welding, explosion welding, or the like, and the adjacent terminal fixing portions 40 are integrally welded by metal welding points, so that the connection is firm and the contact resistance is small.

The screw connection is such that the adjacent terminal fixing parts 40 have screw structures, respectively, and can be screwed to each other or connected together using separate studs and nuts. Threaded connection's advantage is detachability, can assemble repeatedly and dismantle, is applicable to the scene that needs often to dismantle.

The riveting is realized by adopting rivets to rivet the adjacent terminal fixing parts 40 together, and has the advantages of firm connection, simple processing method and easy operation.

The splicing manner is to set corresponding grooves and protrusions on the adjacent terminal fixing portions 40, and to assemble the terminal fixing portions by joggling or splicing the grooves and the protrusions to connect the terminal fixing portions together. The splicing mode has the advantages of stable connection and detachability.

The strip-shaped clamping grooves of two adjacent terminal laminations are in contact fit, and the terminal laminations can slide relatively to each other, so that the terminal laminations can keep the clamping force of the terminal laminations, and the characteristic of uneven surface of the plug-in terminal can be utilized, so that the connection stability is improved.

In one embodiment, the first clamping groove 1221 or the second clamping groove 2221 is connected in contact between two adjacent terminal laminations. The contact connection between the terminal lamination can ensure the current to circulate in the terminal lamination, increase the circulation sectional area, reduce the temperature rise when the plug terminal 22 and the plug terminal 12 are electrified, and prolong the service life of the plug terminal 22 and the plug terminal 12.

In one embodiment, the gap between two adjacent terminal laminations of the first clamping groove 1221 or the second clamping groove 2221 is less than 0.2 mm. A gap is formed between the two terminal laminations, so that air circulation exists between the terminal laminations, the temperature rise between the plug terminal 12 and the opposite plug terminal 22 can be reduced, the conductive anti-corrosion layer of the plug terminal 12 or the opposite plug terminal 22 is protected, the service life of the plug terminal 12 or the opposite plug terminal 22 is prolonged, and the plugging force between the plug terminal 12 and the opposite plug terminal 23 is ensured. When the gap is larger than 0.2mm, the heat dissipation function is not increased, but the plug terminal 12 or the opposite plug terminal 22 with the same contact area occupies a larger width, which wastes the use space.

In one embodiment, as shown in fig. 10, the female connection mechanism 20 has a high voltage interlock structure 25, and the high voltage interlock structure 25 is electrically connected to the interlock connector 15 to form a circuit. The high voltage interlock structure 25 and the interlock connector 15 can form a circuit when the male end connection mechanism 10 and the female end connection mechanism 20 are mated. The high-voltage interlocking is a safety design method for monitoring the integrity of a high-voltage circuit by using a low-voltage signal, and the high-voltage interlocking is used for monitoring the accidental disconnection of the high-voltage circuit so as to avoid the damage to an automobile caused by sudden loss of power. In the high-voltage interlock of the present embodiment, one end is the interlock connector 15, in order to have two pairs of pins, and two U-shaped or V-shaped low-voltage circuits electrically connected to the pins, and the other end is disposed in the female end connecting mechanism 20, and is connected to two plug terminals of the low-voltage circuit, and the plug terminal of the high-voltage interlock structure 25 is connected to the pair pins of the interlock connector 15 in a matching manner, so as to form a low-voltage monitoring circuit, as shown in fig. 16 and 17, when the charging harness connector in the present embodiment is accidentally disconnected, the interlock connector 15 and the high-voltage interlock structure 25 are also disconnected at the same time, and the low-voltage monitoring circuit will alarm the central control system, so as to control the vehicle not to be damaged due to sudden loss of power.

The embedded high-voltage interlocking structure replaces the prior assembled high-voltage interlocking, is fixed in the connector in an integrated injection molding mode, does not need to be assembled, reduces the cost and completely meets the high-voltage interlocking effect.

In one embodiment, as shown in fig. 16 and 17, the male end coupling mechanism 10 and/or the female end coupling mechanism 20 has a sealing structure 60. The sealing structure 60 can seal the plug terminal 12, part of the first cable 11, the plug terminal 22 and part of the second cable 21 into the high-voltage connecting mechanism, prevent external dust and water from damaging and corroding the internal conducting mechanism, and greatly prolong the service life of the high-voltage connecting mechanism.

Further, the seal structure 60 is over-molded on the male end connection mechanism 10 and/or the female end connection mechanism 20. The seal structure 60 enables the male end coupling mechanism 10 and/or the female end coupling mechanism 20 to be more tightly coupled.

The sealing structure 60 of the connector is not provided with an independent sealing ring, but adopts the secondary injection molding sealing structure 60 instead of the traditional sealing ring, can be directly molded on the connector, and has better injection molding combination property and reduced cost.

Further, the sealing structure 60 is made of rubber, soft glue or silica gel. The materials are selected for use, can be heated and melted by an injection molding machine and are molded in a corresponding injection mold, the processing is simple, the adhesion is firm, the service life of the sealing structure 60 can be greatly prolonged, in addition, the materials have good elasticity, can be extruded and deformed during the process of connector assembly, and realize good sealing performance in a filled gap, and the materials are water-resistant and oil-resistant, so that the sealing structure can be ensured to have longer service life and safe sealing performance.

Further, the maximum clearance of the sealing structure with the male end connection mechanism 10 and/or with the female end connection mechanism 20 is less than 520 nm.

In order to verify the influence of the size of the gap between each sealing structure and an adjacent device on the sealing grade, the inventor adopts a dry air method to test a sealing device, controls the difference of internal pressure and external pressure of a tested sample through vacuumizing or air pressurization, and reduces the difference of the internal pressure and the external pressure if leakage exists. The tightness can be detected by detecting a change in air pressure. The detection medium is dry air, is non-toxic and harmless, does not damage the detected product, and simultaneously has clean and tidy detection environment. Taking the example of setting up the seal structure on the male end connector for detection, the inventor completely seals other junctions after connecting male end connector 10 and female end connector 20, chooses the seal structure of different seal degrees for use, takes out the dry air part in the seal structure, makes the atmospheric pressure in the seal structure be less than outside atmospheric pressure, continuously detects the inside atmospheric pressure of seal structure, finds that the atmospheric pressure rises to be unqualified, and the test result is shown in table 8.

TABLE 6 Effect of maximum clearance of seal Structure from Male and/or female end connectors on air pressure changes

Maximum gap (nm)	530	520	500	450	400	350	300	280	260
										Whether the air pressure is changed	Is that	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not

As can be seen from table 6, when the maximum clearance between the seal and the male end connector 10 and/or the female end connector 20 exceeded 520nm, the gas pressure changed, meaning that gas entered the seal, and the test failed. The inventors chose that the maximum gap of the sealing structure with the male end connector 10 and/or the female end connector is not less than 520 nm.

In one embodiment, the male and/or

female connection mechanisms

10, 20 have at least one temperature measurement structure for measuring the temperature of the pin terminals 12 and/or the box terminals 22. The temperature measuring structure can have a certain distance with the plug-in terminal 12 or the plug-in terminal 22, the heat radiation through the plug-in terminal 12 or the plug-in terminal 22 is transmitted to the temperature measuring structure, then the temperature measuring structure measures the temperature of the plug-in terminal 12 or the plug-in terminal 22, or the temperature measuring structure comprises a conducting element, the conducting element is attached to the plug-in terminal 12 or the plug-in terminal 22, and the temperature of the plug-in terminal 12 or the plug-in terminal 22 is measured through the temperature transmitted by the conducting element. And transmitted to a control system for regulating the current passing through the pin terminals 12 or the mating pins 22, thereby adjusting the temperature of the male end connection mechanism 10 or the female end connection mechanism 20.

In one embodiment, the temperature measuring structure is attached to the plug terminal 12 and/or the mating terminal 22 for measuring the temperature of the plug terminal 12 and/or the mating terminal 22. The temperature measurement structure is a temperature sensor, is directly attached to the plug terminal 12 and/or the plug terminal 22, can directly obtain the actual temperature of the plug terminal 12 or the plug terminal 22, does not need to obtain the actual temperature of the plug terminal 12 and/or the plug terminal 22 through calculation, and is simple in structure and more accurate in temperature measurement.

The temperature sensor is an NTC temperature sensor or a PTC temperature sensor. The two temperature sensors have the advantages of small volume and capability of measuring gaps which cannot be measured by other thermometers; the use is convenient, and the resistance value can be randomly selected from 0.1-100 k omega; the cable connector is easy to process into a complex shape, can be produced in large batch, has good stability and strong overload capacity, and is suitable for a product with small requirement on volume and stable performance, such as an adapter.

Adopt temperature measurement mechanism, can monitor the inside terminal temperature of connector alone, avoid because the temperature sensor of other positions damages, and can't monitor the temperature of connector.

In one embodiment, the male connection mechanism 10 and the female connection mechanism 20 are connected by one or more of a paste connection, a magnetic attraction connection, a bayonet connection, a plug connection, a latch connection, a binding connection, a screw connection, a rivet connection, and a welding connection, and the specific implementation is as follows:

in a first possible technical solution, an adhesive structure may be adopted, for example, adhesive layers are respectively disposed on the surfaces to be spliced of the male end connection mechanism 10 and the female end connection mechanism 20, and the two are fixedly connected by adhesion.

In a second feasible technical solution, a magnetic attraction structure may be adopted, for example, a magnetic attraction member is arranged on the surface to be spliced of the male end connecting mechanism 10, and a magnetic attraction member is also arranged on the surface to be spliced of the female end connecting mechanism 20, so that the connection is convenient and fast.

In a third possible technical solution, a plug-in structure may be adopted, for example, a plug is disposed on the outer shell of the male-end shielding shell 14, and the outer shell surface of the female-end shielding shell 24 is fixedly connected after the plug is inserted into the slot, so that the male-end shielding shell 14 is fixedly connected with the female-end shielding shell 24, and the male-end connecting mechanism 10 is connected with the female-end connecting mechanism 20.

In a fourth possible technical solution, a clamping structure may be adopted, for example, a buckle is arranged on the male end shielding shell 14 of the male end connecting mechanism 10, the female end shielding shell 24 of the female end connecting mechanism 20 has a clamping groove, and the buckle is fixedly connected with the groove 31 after being assembled, so that the male end connecting mechanism 10 is fixedly connected with the female end connecting mechanism 20.

In a fifth possible technical solution, a bolt connection structure may be adopted, where the bolt connection structure includes a bolt and a nut, the bolt is fixed on the surface to be spliced of the male end connection mechanism 10, and the nut is arranged on the surface to be spliced of the female end connection mechanism 20 and can rotate; after the bolt and the nut are screwed and tightened, the surfaces to be spliced of the male end connecting mechanism 10 and the female end connecting mechanism 20 are fixedly connected. The bolt connection structure adopts a bolt and a nut with the minimum M3, and the torque when the bolt connection structure is tightened is minimum 0.2 N.m.

In a sixth possible technical solution, a riveting structure may be adopted, where the riveting structure includes a rivet and a fixing hole, the fixing hole is disposed on the surface to be spliced of the male end connection mechanism 10 and the female end connection mechanism 20, the rivet passes through the fixing hole, and deforms the end through which the rivet passes, so that the fixing hole is tightened, and the surface to be spliced of the male end connection mechanism 10 and the female end connection mechanism 20 is fixedly connected.

In a seventh possible technical solution, a welding structure may be adopted, for example, welding pieces are disposed on the surfaces to be spliced of the male end connection mechanism 10 and the female end connection mechanism 20, and the welding pieces are melted and connected together by using a welding machine, so that the surfaces to be spliced of the male end connection mechanism 10 and the female end connection mechanism 20 are fixedly connected. The welding machine includes a heat fusion welding machine and an ultrasonic welding machine.

In an eighth possible technical solution, a bundling structure may be adopted, where the bundling structure includes a bundling member, a groove is provided on the surface of the male end connecting mechanism 10 and the female end connecting mechanism 20, and the bundling member is used to bundle the surfaces to be spliced of the male end connecting mechanism 10 and the female end connecting mechanism 20 together at the groove position, so as to fixedly connect the splicing surfaces of the male end connecting mechanism 10 and the female end connecting mechanism 20. The strapping includes a strap, a pipe clamp, a hook lock, etc.

In a ninth feasible technical solution, a locking structure may be adopted, where the locking structure includes a locking element, the locking element is disposed at a position adjacent to or on a surface to be spliced of the male end connecting mechanism 10 and the female end connecting mechanism 20, and the splicing surface of the male end connecting mechanism 10 and the female end connecting mechanism 20 is fixedly connected through the locking element.

The above technical solution for connecting the male end connection mechanism 10 and the female end connection mechanism 20 may be that the positions of the male end connection mechanism 10 and the female end connection mechanism 20 may be interchanged.

Further, as shown in fig. 16 and 17, the male-end shield shell 14 or the female-end shield shell 24 is injection-molded with the male-end outer insulating shell 16 or the female-end outer insulating shell 26 at least partially on the outer periphery. By adopting the integral injection molding method, the male end outer insulating shell 16 or the female end outer insulating shell 26 can be directly molded on at least part of the periphery of the male end shielding shell 14 or the female end shielding shell 24, and the conductive part of the male end shielding shell 14 or the female end shielding shell 24 can be ensured not to be connected with other external conductors to cause short circuit.

In one embodiment, the mating force between the

mating terminals

12 and 22 is between 3N-150N.

Further, the mating force between the mating terminal 12 and the mating terminal 22 is between 10N and 130N.

In order to verify the contact resistance between the mating terminal 12 and the mating terminal 22 and the influence on the mating condition due to the mating force between the mating terminal 12 and the mating terminal 22, the inventor selected the mating terminal 12 and the mating terminal 22 having the same shape and size, and designed the mating force between the mating terminal 12 and the mating terminal 22 to be different mating forces, so as to observe the contact resistance between the mating terminal 12 and the mating terminal 22 and the condition after a plurality of mating.

The contact resistance is detected by measuring the resistance at the contact position between the mating terminal 12 and the mating terminal 22 using a micro resistance measuring device, and reading the value on the micro resistance measuring device as the contact resistance between the mating terminal 12 and the mating terminal 22, and in this embodiment, the contact resistance is less than 50 μ Ω, which is an ideal value.

The test mode of the opposite plugging condition of the plug terminal 12 and the opposite plugging terminal 22 is to perform 50 times of opposite plugging on the plug terminal 12 and the opposite plugging terminal 22, observe the times of dropping and incapability of plugging after plugging, wherein the dropping time requirement after plugging is less than 3 times, and the time requirement of incapability of plugging is less than 5 times.

Table 7, the effect of the mating force between the different plug terminals 12 and the mating plug terminal 22 on the contact resistance and the mating condition:

as can be seen from table 7 above, when the plugging force between the plug terminal 12 and the mating terminal 22 is smaller than 3N, the bonding force between the plug terminal 12 and the mating terminal 22 is too small, the contact resistance between the plug terminal 12 and the mating terminal 22 is higher than an ideal value, and the number of times of dropping after plugging exceeds 3 times, which is an unqualified state. When the mating force between the mating terminal 12 and the mating terminal 22 is larger than 150N, the number of times the mating terminal 12 and the mating terminal 22 cannot be plugged is larger than 5 times or more, and the mating force between the mating terminal 12 and the mating terminal 22 is set to 3N to 150N.

As can be seen from table 7 above, when the mating force between the mating terminal 12 and the mating terminal 22 is between 10N and 130N, the contact resistance value is within the ideal value range without falling after mating or failing to mate, and therefore, the inventors set that the mating force between the mating terminal 12 and the mating terminal 22 is preferably between 10N and 130N.

In one embodiment, the contact resistance between the receptacle terminal 12 and the mating terminal 22 is less than 9m Ω.

Preferably, the contact resistance between the mating terminal 12 and the mating terminal 22 is less than 1m Ω.

Generally, a large current needs to be conducted between the plug terminal 12 and the opposite plug terminal 22, if the contact resistance between the plug terminal 12 and the opposite plug terminal 22 is greater than 9m Ω, a large temperature rise occurs at the contact position, and the temperature is higher and higher along with the increase of time, the temperature between the plug terminal 12 and the opposite plug terminal 22 is too high, when the thermal expansion rates of the plug terminal 12 and the opposite plug terminal 22 are different, the mechanical deformation is asynchronous, so that internal stress is generated between the plug terminal 12 and the opposite plug terminal 22, and the deformation of the plug terminal 12 and the opposite plug terminal 22 is caused in severe cases, so that the function of electrical conduction cannot be realized. Secondly, the excessive temperature of the plug terminal 12 and the plug terminal 22 can be conducted to the insulation layers of the first cable 11 and the second cable 12, resulting in the melting of the corresponding insulation layers, failing to play the role of insulation protection, and causing the circuit short circuit to cause the damage of the connection structure, even the safety accidents such as burning, etc. in severe cases. Therefore, the inventors set the contact resistance between the jack terminal 12 and the counter jack terminal 22 to be less than 9m Ω.

In order to verify the influence of the contact resistance between the plug terminal 12 and the opposite plug terminal 22 on the temperature rise and conductivity of the connector, the inventor selects the same plug terminal 12 and the opposite plug terminal 22 with different contact resistances, tests the conductivity and the temperature rise of the opposite plug structure are carried out,

the conductivity test is to test the conductivity of the corresponding mating part after the mating terminal 12 is mated with the mating terminal 22 and the mating structure is powered on, and in this embodiment, the conductivity is greater than 99% as an ideal value.

The temperature rise test is to apply the same current to the plug structure, detect the temperatures of the plug terminal 12 and the opposite plug terminal 22 at the same position before applying the current and after stabilizing the temperature in a closed environment, and take the absolute value by taking the difference. In this example, a temperature rise greater than 50K is considered unacceptable.

Table 8, the effect of the contact resistance between the different plug terminals 12 and the counterpart plug terminal 22 on the conductivity and temperature rise:

as can be seen from table 8 above, when the contact resistance between the mating terminal 12 and the mating terminal 22 is greater than 9m Ω, the temperature rise of the plug structure exceeds 50K, and meanwhile, the electrical conductivity of the plug structure is less than 99%, which does not meet the standard requirement. Therefore, the inventors set the contact resistance between the jack terminal 12 and the counter jack terminal 22 to be less than 9m Ω.

Further, since the temperature rise of the plug structure is lower than 20K when the contact resistance between the plug terminal 12 and the counter plug terminal 22 is less than 1m Ω, the electrical conductivity of the plug structure between the plug terminal 12 and the counter plug terminal 22 is 99.9%, and the electrical conduction effect is better, the inventor preferably sets the contact resistance between the plug terminal 12 and the counter plug terminal 22 to be less than 1m Ω.

In one embodiment, the number of insertion and removal times between the male connection mechanism 10 and the female connection mechanism 20 is 10 or more times. When the connecting mechanism is assembled with the electric device, the male end connecting mechanism 10 and the female end connecting mechanism 20 need to be assembled together, and then maintenance and assembly disassembly are performed, and the male end connecting mechanism 10 and the female end connecting mechanism 20 need to be separated and then plugged, so that the plugging frequency between the male end connecting mechanism 10 and the female end connecting mechanism 20 cannot be less than 10 times, if the plugging frequency is less than 10 times, the male end connecting mechanism 10 or the female end connecting mechanism 20 is damaged and cannot play a role together with current in a certain disassembly and maintenance process, the whole connecting mechanism including a wiring harness needs to be completely replaced, the maintenance time is consumed, the maintenance cost is increased, and therefore, the design of the locking mechanism and the sealing mechanism is adopted no matter whether the materials of the male end connecting mechanism 10 and the female end connecting mechanism 20 are selected or the plugging mechanism, the locking mechanism and the plugging mechanism between the male end connecting mechanism 10 and the female end connecting mechanism 20 are adopted, at least 10 times of disassembly and assembly are needed to meet the use requirement of the connecting mechanism.

In one embodiment, the female coupling mechanism 20 weighs less than or equal to 215 g. As shown in fig. 1, the female end connecting mechanism 20 is located above the connecting mechanism and is fixedly inserted into the male end connecting mechanism 10, when the weight of the female end connecting mechanism 20 is too large, the gravity received by the female end connecting mechanism 20 is also large, and under the condition of vibration of the electric device, the whole connecting mechanism can vibrate along with the electric device, and due to the reason of inertia, the female end connecting mechanism 20 can be subjected to large vibration and can make abnormal sound, and the abnormal sound is not allowed in the using process of the electric device.

In order to verify the influence of the weight of the female-end connecting mechanism 20 on the abnormal sound of the connecting mechanism, the inventor adopted the same male-end connecting mechanism 10 and samples of the female-end connecting mechanism 20 with different weights, assembled and then installed the samples on a vibration test bench, and performed a vibration test to observe whether the abnormal sound of the female-end connecting mechanism 20 occurs during the vibration test, and the test results are shown in table 9.

TABLE 9 influence of weight of female end coupling mechanism 20 on abnormal noise of the coupling mechanism

Weight (g)	175	185	195	205	215	225	235	245	255
										Whether abnormal sound is present or not	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Is that	Is that	Is that	Is that

As can be seen from table 9, when the weight of the female-end connection mechanism 20 is greater than 215g, abnormal noise occurs in the female-end connection mechanism 20 during the vibration test, and the test is not satisfactory. The inventor chooses the female connection mechanism 20 to have a weight of 215g or less.

In one embodiment, the height of the female connection mechanism 20 in the insertion and extraction direction is 276mm or less. After the male end connection mechanism 10 and the female end connection mechanism 20 are assembled together, the male end connection mechanism and the female end connection mechanism need to be installed in an electric device, but in general, the reserved space of the electric device is small, and if the female end connection mechanism 20 is high, the male end connection mechanism and the female end connection mechanism cannot be installed in the electric device, and raw materials are wasted, so that the female end connection mechanism 20 needs to be lower than a certain height during design.

In order to verify the influence of the height of the female connecting mechanism 20 along the plugging direction on the installation condition of the connecting mechanism, the inventor adopted the same male connecting mechanism 10, assembled and installed samples of the female connecting mechanism 20 with different heights along the plugging direction on the electric device, and observed whether the female connecting mechanism 20 interferes with other parts of the electric device in the installation process, and the test results are shown in table 10.

TABLE 10 influence of height of female terminal connection 20 in inserting/extracting direction on connection installation

Height (mm)	236	246	256	266	276	286	296	306	316
										Whether or not to interfere	Whether or not	Whether or not	Whether or not	Whether or not	Whether or not	Is that	Is that	Is that	Is that

As can be seen from table 10, when the height of the female terminal connection mechanism 20 in the inserting and extracting direction is greater than 276mm, the female terminal connection mechanism cannot be mounted in a specified position of the electric device, and the test is not qualified. Therefore, the height of the female connecting mechanism 20 along the plugging direction is less than or equal to 276 mm.

In one embodiment, the receptacle terminal 12 and/or the mating terminal 22 are provided with an electrically conductive corrosion protection layer on at least a portion of their surface.

When the materials of the plug terminal 12 and the opposite plug terminal 22 are different, the electric conduction between the plug terminal 12 and the opposite plug terminal 22 can generate electrochemical corrosion due to potential difference, so that the service life of the plug terminal 12 and the opposite plug terminal 22 is shortened, in order to reduce the electrochemical corrosion, a conductive anti-corrosion layer can be arranged on at least part of the surface of the plug terminal 12 and/or the opposite plug terminal 22, and the conductive anti-corrosion material can use a metal material with the potential between the potential potentials of the materials of the plug terminal 12 and the opposite plug terminal 22, so that the plug terminal 12 and the opposite plug terminal 22 are isolated, the electrochemical corrosion is slowed down, and the service life of the plug terminal 12 and the opposite plug terminal 22 is prolonged.

In the connection of the plug terminal 12 and the opposite plug terminal 22, the conductive anti-corrosion layer can reduce the electrochemical reaction between the plug terminal 12 and the opposite plug terminal 22, and solve the technical problem that the flat belt 11 can be connected with other terminals or electric devices only through terminals made of other materials.

Further, the conductive anti-corrosion layer is attached to at least a portion of the surface of the mating terminal 22 and/or the mating terminal 12 by one or more of electroplating, chemical plating, magnetron sputtering, vacuum plating, pressure welding, diffusion welding, friction welding, resistance welding, ultrasonic welding, or laser welding.

The electroplating method is a process of plating a thin layer of other metals or alloys on the surface of some metals by utilizing the electrolysis principle.

The chemical plating method is a deposition process for generating metal through controllable oxidation-reduction reaction under the catalytic action of the metal.

The magnetron sputtering method is characterized in that electrons spirally run near the surface of a target by utilizing the interaction of a magnetic field and an electric field, so that the probability of generating ions by the electrons colliding with argon is increased. The generated ions collide with the target surface under the action of the electric field so as to sputter the target material.

The vacuum plating method is to deposit various metal and non-metal films on the surface of the plastic part by distillation or sputtering under vacuum condition.

Pressure welding is a method of applying pressure to a welding material to bring the joining surfaces into close contact with each other to cause a certain plastic deformation, thereby completing the welding.

The friction welding method is a method of welding by plastically deforming a workpiece under pressure using heat generated by friction of a contact surface of the workpiece as a heat source.

The resistance welding method is a method of welding by using a strong current to pass through a contact point between an electrode and a workpiece and generating heat by a contact resistance.

The ultrasonic welding method is a method in which high-frequency vibration waves are transmitted to the surfaces of two objects to be welded, and the surfaces of the two objects are rubbed against each other under pressure to form fusion between the molecular layers.

Diffusion welding refers to a solid state welding method in which a workpiece is pressed at a high temperature without visible deformation and relative movement. In various ways or in combination, the conductive anti-corrosion layer can be stably disposed on at least a portion of the surface of the receptacle terminal 12 and/or the receptacle terminal 22.

In one embodiment, the conductive corrosion protection layer has a thickness of 0.3 μm to 3000 μm.

In one embodiment, the conductive corrosion protection layer has a thickness of 2.5 μm to 1000 μm.

In order to test the influence of the thicknesses of different conductive anti-corrosion layers on the voltage drop, the inventor adopts the plug terminal 12 and the counter plug terminal 22 which are made of the same material and have the same structure, arranges the conductive anti-corrosion layers with different thicknesses on at least part of the surfaces of the plug terminal 12 and/or the counter plug terminal 22 respectively, and then tests the voltage drop after the plug terminal 12 and the counter plug terminal 22 are plugged. The results are shown in Table 11.

In the present embodiment, it is not acceptable that the voltage drop after the plug terminal 12 and the mating plug terminal 22 are plugged is larger than 4 mV.

Table 11, effect of different conductive corrosion protection layer thicknesses on voltage drop (mV):

as can be seen from the data in table 11 above, when the thickness of the conductive anticorrosive layer is greater than 3000 μm and less than 0.3 μm, the voltage drop of the plugging structure of the plug terminal 12 and the counterpart plug terminal 22 is greater than 4mV, which is not a desirable value, and therefore, the inventors selected the thickness of the conductive anticorrosive layer to be 0.3 μm to 3000 μm. Among them, when the thickness of the conductive corrosion prevention layer is in the range of 2.5 μm to 1000 μm, the voltage drop of the plug structure of the plug-in terminal 12 and the counter-plug terminal 22 is an optimum value, and therefore, it is preferable that the thickness of the conductive corrosion prevention layer is 2.5 μm to 1000 μm.

In one embodiment, the conductive anticorrosion layer is made of a material containing one or more of nickel, cadmium, manganese, zirconium, cobalt, tin, titanium, chromium, gold, silver, zinc, tin-lead alloy, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver, hard silver, and silver-gold-zirconium alloy.

Preferably, the potential of the material of the conductive anti-corrosion layer is between the potential of the materials of the male terminal 12 and the female terminal 22. This arrangement can reduce the electrochemical corrosion of the plug terminal 12 and the mating plug terminal 22 after mating.

In the following, the plug terminal 12 and the opposite plug terminal 22 are also taken as an example, the plug terminal 12 and the opposite plug terminal 22 are provided with conductive anti-corrosion layers, and in order to demonstrate the influence of different conductive anti-corrosion materials on the performances of the plug terminal 12 and the opposite plug terminal 22, the inventor uses the same specification and material and adopts the plug terminal 12 and the opposite plug terminal 22 of different conductive anti-corrosion materials to perform a series of corrosion resistance time tests, and the experimental results are shown in table 12.

The corrosion resistance time test in table 12 is to put the plug terminal 12 and the plug terminal 22 samples into a salt spray test box, spray salt spray to each position of the plug terminal 12 and the plug terminal 22, take out and clean every 20 hours to observe the surface corrosion condition, namely a period, and stop the test until the surface corrosion area of the plug terminal 12 and the plug terminal 22 samples is greater than 10% of the total area, and record the period number at that time. In this example, the number of cycles less than 80 was considered to be unacceptable.

Table 12: effect of different conductive anticorrosion layer materials on the corrosion resistance of the sample of the

terminals

12 and 22

As can be seen from table 12, when the material of the conductive anti-corrosion layer contains the commonly used metals of tin, nickel and zinc, the experimental results are inferior to those of other selected metals, and the experimental results of other selected metals exceed the standard value more and the performance is more stable. Therefore, the inventor selects the material of the conductive anti-corrosion layer to contain (or be) one or more of nickel, cadmium, manganese, zirconium, cobalt, tin titanium, chromium, gold, silver, zinc-tin-lead alloy, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver, hard silver and silver-gold-zirconium alloy. And more preferably, the material of the conductive anti-corrosion layer is selected to contain (or is) one or more of cadmium, manganese, zirconium, cobalt, titanium, chromium, gold, silver, tin-lead alloy, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver, hard silver and silver-gold-zirconium alloy.

In one embodiment, the conductive portion of the first cable 11 is integral with the jack terminal 12. The conductive part of the first cable 11 and the plug terminal 12 can be made of the same material, that is, the conductive part of the first cable 11 extends out and is molded into the plug terminal 12, so that the use of the plug terminal 12 can be saved, the material cost is reduced, the processing time is saved, and the front end of the conductive part of the first cable 11 can be molded into various shapes as required without considering the problem of assembly.

In one embodiment, the conductive portion of the second cable 21 is integrally configured with the mating terminal 22. The conductive part of the second cable 21 and the plug-in terminal 22 can be made of the same material, that is, the conductive part of the second cable 21 extends out and is molded into the plug-in terminal 22, so that the use of the plug-in terminal 22 can be saved, the material cost can be reduced, the processing time can be saved, and the front end of the conductive part of the second cable 21 can be molded into various shapes as required without considering the problem of assembly.

The invention also provides an electric energy transmission device which comprises the high-voltage connecting mechanism.

The invention also provides a motor vehicle which comprises the high-voltage connecting mechanism and the electric energy transmission device.

The high-voltage connecting mechanism is provided with the male end shielding shell and the female end shielding shell which are formed by injection molding, is simple to process, has lower cost than a shielding metal shell, and can effectively shield electromagnetic interference inside the high-voltage connecting mechanism and reduce electromagnetic interference on other equipment by the inserting matching of the male end shielding shell and the female end shielding shell and the electric connection with the cable shielding net.

The male end shielding shell and the female end shielding shell are connected with the cable shielding layer in various ways, so that the shielding shell and the shielding layer can be stably and effectively connected, and a better shielding effect is realized.

The terminal and the cable are integrally injection-molded in the male end shell and the female end shell, so that the work of inserting the terminal and the like is not needed, the processing procedures are reduced, the production cost is reduced, and the integrally injection-molded male end shell and the integrally injection-molded female end shell have simple structures, do not need high-precision injection molds, and have good insulation effect due to complete sealing.

The plug terminal can be in plug fit with the plug terminal, the plug part or the plug part is formed by stacking a plurality of terminal laminations, the front end of the flaky terminal can be plugged into the strip-shaped groove, the deformation and elasticity weakening problems caused by the over-thickness of the metal plate are reduced through the strip-shaped groove structure, a larger contact area is formed between the terminal and the strip-shaped groove structure, and the connection reliability and the connection conduction effect are guaranteed. The plug terminal and the plug terminal can ensure that the clamping structure is stable, reduce deformation and increase the strength of the plug connection structure.

The sealing structure of the connector does not need to be provided with an independent sealing ring, but adopts a secondary injection molding sealing structure to replace the traditional sealing ring, can be directly molded on the connector, and has better injection molding combination property and reduced cost.

The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims

1. A high-voltage connecting mechanism comprises a male end connecting mechanism and a female end connecting mechanism, and is characterized in that the male end connecting mechanism comprises a first cable, a plug terminal, a male end shell integrally formed with the first cable and the plug terminal, and a male end shielding shell arranged outside the male end shell; the female end connecting mechanism comprises a plug-in terminal, a second cable, a female end shell integrally formed with the plug-in terminal and the second cable, and a female end shielding shell arranged outside the female end shell; the male end connecting mechanism and the female end connecting mechanism are electrically connected with the plug-in terminal through the plug-in terminal, the male end shell is connected with the female end shell, and the male end shielding shell is connected with the female end shielding shell.

2. The high voltage connection of claim 1, wherein the first cable includes a first shield layer, the male end shield shell being at least partially electrically connected to the first shield layer; the second cable comprises a second shielding layer, and at least part of the female end shielding shell is electrically connected with at least part of the second shielding layer.

3. The high voltage connection of claim 1, wherein the male end shield shell comprises a first shield, the first cable comprises a first shield layer, the first shield is disposed at least partially around the first shield, and the first shield is electrically connected to the male end shield shell via the first shield; female end shielding shell includes second shield assembly, the second cable includes the second shielding layer, the second shield assembly sets up the at least partial periphery of second shielding layer, the second shielding layer passes through the second shield assembly with female end shielding shell electric connection.

4. The high voltage connection mechanism according to claim 1, wherein the inner surface of the male shield shell is provided with a first conductive spring, the first cable comprises a first shield layer, the first conductive spring is connected with the first shield layer, and the first conductive spring applies pressure to the first shield layer; the inner surface of the female end shielding shell is provided with a second conductive elastic sheet, the second cable comprises a second shielding layer, the second conductive elastic sheet is connected with the second shielding layer, and the second conductive elastic sheet applies pressure to the second shielding layer.

5. The high voltage connection mechanism according to claim 4, wherein the upper pressure applied by the first conductive dome to the first shielding layer is in a range of 0.3N-95N; the upper pressure range of the second conductive elastic sheet applied to the second shielding layer is 0.3N-95N.

6. The high voltage connection of claim 1, wherein the first cable comprises a first shield layer, an impedance between the male end shield shell and the first shield layer being less than 80m Ω; the second cable comprises a second shielding layer, and the impedance between the female-end shielding shell and the second shielding layer is less than 80m omega.

7. The high voltage connection according to claim 1, wherein the transfer impedance of the male end shield shell or the female end shield shell is less than 100m Ω.

8. The high voltage connection mechanism according to claim 1, wherein the plug terminal comprises a first fixing portion and a plug portion sequentially arranged, the first fixing portion is electrically connected with the conductive portion of the first cable, and the plug portion is sheet-shaped or has a first clamping groove.

9. The high pressure connection of claim 8, wherein the mating part is in the form of a tab that protrudes at least partially from the male end housing, or wherein the male end housing has a first receiving cavity, the mating part protruding at least partially from a bottom surface of the first receiving cavity but not beyond the male end housing.

10. The high-pressure coupling mechanism according to claim 8, wherein the first clip groove at least partially protrudes from an outer wall of the male end housing, or wherein the male end housing is provided with a first opening projection, and wherein the mating part is at least partially disposed within the first opening projection.

11. The high voltage connection of claim 8, wherein the male end shield housing covers at least a portion of the male end housing, the male end shield housing having an opening, the plug portion extending from or within the opening.

12. The high-voltage connection of claim 1, wherein the male end connection comprises an interlock connector that is at least partially integrally molded in the male end housing.

13. The high-voltage connection mechanism according to claim 1, wherein the mating terminal comprises a second fixing portion and a mating portion, which are sequentially arranged, the second fixing portion is electrically connected with the conductive portion of the second cable, and the mating portion is sheet-shaped or provided with a second clamping groove; the plug terminal comprises a first fixing part and a plug part which are sequentially arranged, the plug part is electrically connected with the plug part, and the plug part is sheet-shaped or is provided with a first clamping groove.

14. The high-pressure connecting mechanism according to claim 13, wherein a clamping band is sleeved around the first clamping groove or the second clamping groove, and the clamping band is made of memory alloy.

15. The high-pressure connection according to claim 14, wherein the transformation temperature of the memory alloy is set in the range of 40 ℃ to 70 ℃, and the clamp is in an expanded state in a state where the temperature of the clamp is lower than the transformation temperature; and under the condition that the temperature of the clamp is higher than the transformation temperature, the clamp is in a clamping state.

16. The high-pressure connecting mechanism according to claim 13, wherein a clip is disposed around the first clip groove or the second clip groove, the clip comprises a side wall and an elastic unit fixed on the side wall, and the elastic unit is in contact connection with the first clip groove or the second clip groove.

17. The high-pressure connection according to claim 16, wherein the force applied by the elastic unit to the first or second clip groove ranges from 3N to 200N.

18. The high-pressure connection according to claim 16, wherein the elastic unit is an elastic rubber body, a spring or a metal spring sheet.

19. The high-pressure coupling mechanism according to claim 13, wherein the mating portion is a plate shape and protrudes at least partially from the female housing, or the female housing has a second receiving cavity, and the mating portion protrudes at least partially from a bottom surface of the second receiving cavity but does not protrude beyond the female housing.

20. The high pressure connection of claim 13, wherein the mating portion is formed with a second clip groove that at least partially protrudes from an outer wall of the female housing or is formed with a second opening boss, and the mating portion is at least partially disposed within the second opening boss.

21. The high voltage connection of claim 13, wherein the mating part or the mating part is formed by stacking a plurality of terminal laminations, the mating part having a first clamping groove that mates with the mating part in a mating and mating manner; or the opposite insertion part is provided with a second clamping groove, and the second clamping groove is matched and oppositely inserted and connected with the sheet-shaped insertion part.

22. The high voltage connection of claim 21, wherein the terminal lamination includes a terminal retention portion, and the first clip groove or the second clip groove is secured to the terminal retention portion.

23. The high-voltage connection according to claim 22, wherein adjacent two of the terminal fixing parts are connected together by crimping, welding, screwing, riveting or splicing.

24. The high voltage connection according to claim 21, wherein the first clip groove or the second clip groove provides a contact connection between two adjacent terminal laminations.

25. The high voltage connection according to claim 21, wherein a gap between two adjacent terminal laminations of the first clip groove or the second clip groove is less than 0.2 mm.

26. The high voltage connection of claim 12, wherein the female end connection has a high voltage interlock that is electrically connected to the interlock connector to form a circuit.

27. The high pressure connection of claim 1, wherein the male end connection and/or the female end connection has a seal structure.

28. The high-pressure connection according to claim 27, wherein the sealing structure is over-molded on the male end connection and/or the female end connection.

29. The high-voltage connection according to claim 1, wherein the male connection and/or the female connection has at least one temperature measuring structure for measuring the temperature of the plug terminal and/or the counter-plug terminal.

30. The high voltage connection mechanism of claim 29, wherein the temperature measurement structure is attached to the plug terminal and/or the mating terminal for measuring the temperature of the plug terminal and/or the mating terminal.

31. The high-pressure connection according to claim 1, wherein the male connection and the female connection are connected by one or more of a paste connection, a magnetic attraction connection, a bayonet connection, a plug connection, a snap connection, a strapping connection, a screw connection, a rivet connection and a welding connection.

32. The high voltage connection according to claim 1, wherein the male end shield shell or the female end shield shell is injection molded over at least a portion of the outer circumference thereof with a male end outer insulation shell or a female end outer insulation shell.

33. The high voltage connection according to claim 1, wherein the mating force between the mating terminal and the mating terminal is between 3N and 150N.

34. The high voltage connection according to claim 1, wherein the mating force between the mating terminal and the mating terminal is between 10N and 130N.

35. The high voltage connection according to claim 1, wherein a contact resistance between the mating terminal and the jack terminal is less than 9m Ω.

36. The high voltage connection according to claim 1, wherein a contact resistance between the mating terminal and the jack terminal is less than 1m Ω.

37. The high-voltage connection according to claim 1, wherein the number of times of insertion and removal between the male connection and the female connection is 10 or more times.

38. The high-voltage connection according to claim 1, wherein the weight of the female end connection is 215g or less.

39. The high-voltage connection according to claim 1, wherein the height of the female connection in the plugging direction is less than or equal to 276 mm.

40. The high-voltage connection according to claim 1, characterized in that the plug terminal and/or the counter-plug terminal is provided with an electrically conductive corrosion protection layer on at least a part of the surface.

41. The high voltage connection of claim 1, wherein the conductive portion of the first cable is integral with the jack terminal.

42. The high-voltage connection according to claim 1, wherein the conductive portion of the second cable is of unitary construction with the mating terminal.

43. An electrical energy transmission device comprising a high voltage connection according to any one of claims 1 to 42.

44. A motor vehicle, characterized in that it comprises a high-voltage connection according to any one of claims 1-42.