CN216698922U

CN216698922U - High-voltage connecting device, electric energy transmission device and motor vehicle

Info

Publication number: CN216698922U
Application number: CN202122683225.XU
Authority: CN
Inventors: 王超; 王大禹
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-06-07
Anticipated expiration: 2031-11-04

Abstract

A high-voltage connecting device comprises a high-voltage socket mechanism and a high-voltage plug mechanism which is oppositely inserted into the high-voltage socket mechanism and connected with the high-voltage socket mechanism in a locking manner, wherein a first locking hook is arranged on the high-voltage socket mechanism, a primary locking device and a secondary locking device are arranged on the periphery of the high-voltage plug mechanism, one end of the secondary locking device comprises a first locking buckle and can be locked with the first locking hook in a matching manner, the other end of the secondary locking device comprises a second locking hook, and the primary locking device comprises a second locking buckle and is locked with the second locking hook in a matching manner; the second lock catch is separated from the second lock hook by moving the primary locking device, and the first lock catch is separated from the first lock hook by moving the secondary locking device, so that the high-voltage plug mechanism is separated from the high-voltage socket mechanism. The shielding shell provided by the utility model is simple to process, low in cost and capable of effectively shielding electromagnetic interference. And the locking device can not destroy the whole sealing performance of the shielding shell, and the shielding effect is ensured. The secondary locking device is arranged, so that electric arcs can not be generated when the high-voltage terminal is separated.

Description

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

Technical Field

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

Background

In the field of electrical technology, high-voltage cables and data communication cables are used for conducting current and signals. In order to reduce the influence of electromagnetic interference on the cable itself or the outside, shielding cables are generally 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. To facilitate connection to a docked cable or consumer, the end of the cable is typically connected to a connection device. The connection devices are generally not shielded by shielding means, resulting in a high level of electromagnetic interference at the location of the connection devices. The existing solution is to arrange a metal cover inside or outside the connecting device, which can achieve the shielding effect. However, the metal cover is difficult to process and high in cost; the assembly of the metal cover and the connecting device is also troublesome, and the assembly time is increased; and when the metal cover is arranged inside the connecting device, the metal cover is easy to generate short circuit with the guide core, so that the shielding layer is damaged, even the cable is burnt, and serious accidents occur.

The method can adopt conductive plastic materials to process the shell of the connecting device, not only can the shell be formed in one step, but also the processing and the installation of a metal cover are reduced, the processing working hour is reduced, and the production efficiency is improved.

Therefore, a high-voltage connection device and an electric energy transmission device which have simple structure, do not damage the shielding effect of the shielding shell and have a secondary locking function are urgently needed in the technical field of electric appliances.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-voltage connecting device, wherein a high-voltage socket mechanism and a high-voltage plug mechanism are provided with an integrally injection-molded shielding shell, 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 device can be effectively shielded through the insertion fit of the shielding shell and the electric connection with a cable shielding net, so that the electromagnetic interference on other equipment is reduced. And primary locking device and secondary locking device set up in the periphery of shielding shell, can not destroy shielding shell's whole leakproofness, guarantee the shielding effect. The primary locking device and the secondary locking device are arranged, so that the high-voltage interlocking mechanism of the high-voltage connecting device can be disconnected when the primary locking device is released, the high-voltage terminal is not disconnected, when the secondary locking device is released, the control system cuts off the power supply after receiving the disconnection information of the high-voltage interlocking mechanism, the high-voltage terminal is separated without electricity, and electric arcs generated when the high-voltage terminal is separated are avoided.

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

the utility model provides a high-voltage connecting device, which comprises a high-voltage socket mechanism and a high-voltage plug mechanism, wherein the high-voltage plug mechanism is oppositely inserted into and connected with the high-voltage socket mechanism in a locking manner, a first locking hook is arranged on the high-voltage socket mechanism, a primary locking device and a secondary locking device are arranged on the periphery of the high-voltage plug mechanism, one end of the secondary locking device comprises a first locking buckle and can be locked with the first locking hook in a matching manner, the other end of the secondary locking device comprises a second locking hook, and the primary locking device comprises a second locking buckle and is locked with the second locking hook in a matching manner; the secondary locking device is moved to separate the first lock catch from the first lock hook, so that the high-voltage plug mechanism is separated from the high-voltage socket mechanism.

In a preferred embodiment, the high-voltage socket mechanism comprises a convex male end protrusion, the high-voltage plug mechanism comprises a female end cavity, the male end protrusion and the female end cavity both comprise shielding shells, and after the male end protrusion and the female end cavity are connected in an opposite inserting mode, the shielding shells are contacted and electrically connected.

In a preferred embodiment, the high-voltage socket mechanism comprises a platform perpendicular to the plugging direction of the high-voltage plug mechanism, and the first locking hook is arranged on the platform.

In a preferred embodiment, the first lock hook comprises a cylinder and a hook, one end of the cylinder is arranged on the platform, the other end of the cylinder extends along the pulling direction of the high-voltage plug mechanism and is connected with the hook, and the hook protrudes out of the side surface of the cylinder and comprises a first contact surface perpendicular to the pulling direction of the high-voltage plug mechanism and a first guide surface forming a certain angle with the pulling direction of the high-voltage plug mechanism.

In a preferred embodiment, the first latch hook further includes a protection baffle, the protection baffle is cylindrical, plate-shaped, L-shaped, annular or U-shaped, one end of the protection baffle is disposed on the platform, the other end of the protection baffle extends along the pull-out direction of the high-voltage plug mechanism, and the height of the protection baffle is greater than or equal to the height of the hook.

In a preferred embodiment, the primary locking device comprises a fixing part, an elastic part, a locking part and a first pressing part which are sequentially arranged, one end of the fixing part is arranged on the outer side of the high-voltage plug mechanism, and the other end of the fixing part extends along a direction perpendicular to the plugging and unplugging direction of the high-voltage plug mechanism and is connected with one end of the elastic part; the elastic part, the locking part and the first pressing part are arranged along the plugging direction of the high-voltage plug mechanism, and the locking part is provided with the second lock catch.

In a preferred embodiment, a surface of the first pressing portion facing away from the high-voltage plug mechanism is a first pressing surface, and an area of the first pressing surface is not less than 5mm²。

In a preferred embodiment, the first pressing portion receives a first pressing force, so that the elastic portion deforms and drives the locking portion to move toward the high-voltage plug mechanism, and the first pressing force is not more than 135N.

In a preferred embodiment, the primary locking device further includes an anti-disengaging device, a clamping groove is formed in the outer side of the high-voltage plug mechanism, the anti-disengaging device can translate in the clamping groove along the plugging direction of the high-voltage plug mechanism, the anti-disengaging device includes a clamping hook, a blocking piece and a push-pull portion which are sequentially connected, the blocking piece can translate between the first pressing portion and the outer side of the high-voltage plug mechanism, and therefore the locking portion is blocked from moving towards the direction close to the high-voltage plug mechanism.

In a preferred embodiment, the secondary locking device further includes a second pressing portion between the first lock catch and the second lock hook, and a rotating portion disposed on the second pressing portion and close to the first lock catch, wherein the rotating portion protrudes from the second pressing portion.

In a preferred embodiment, the rotating portion is disposed toward the high-voltage plug mechanism and contacts with an outer side of the high-voltage plug mechanism, the second pressing portion receives a second pressing force, so that the secondary locking device rotates around a contact position of the rotating portion and the high-voltage plug mechanism to drive the first lock catch to move in a direction away from the high-voltage plug mechanism, and the second pressing force is less than or equal to 135N.

In a preferred embodiment, a surface of the second pressing portion facing away from the high-voltage plug mechanism is a second pressing surface, and an area of the second pressing surface is not less than 5mm²。

In a preferred embodiment, the second latch hook protrudes out of the secondary locking device, and includes a second contact surface perpendicular to the plugging direction of the high-voltage plug mechanism and a second guide surface forming a certain angle with the plugging direction of the high-voltage plug mechanism.

In a preferred embodiment, the outer side surface of the high-voltage plug mechanism is further provided with a lock catch fixing part, the lock catch fixing part is provided with a through hole along the plugging direction of the high-voltage plug mechanism, and the first lock catch penetrates through the through hole and can slide in the through hole.

In a preferred embodiment, a width of the second pressing portion along a direction perpendicular to a plugging direction of the high-voltage plug mechanism is greater than a width of the through hole.

In a preferred embodiment, one of the high voltage receptacle mechanism and the high voltage plug mechanism has an interlock connector, and the other has a high voltage interlock structure electrically connected to the interlock connector to form a circuit.

In a preferred embodiment, one of the high-voltage socket mechanism and the high-voltage plug mechanism has at least one high-voltage plug terminal, and the other one of the high-voltage socket mechanism and the high-voltage plug mechanism has at least one high-voltage plug terminal, and the high-voltage plug terminal are electrically connected to form a loop.

In a preferred embodiment, after the high-voltage socket mechanism and the high-voltage plug mechanism are inserted in place, the shortest distance between the latch fixing portion and the second pressing portion is greater than the length of the high-voltage interlocking structure overlapping with the interlocking connector, and less than the length of the high-voltage plug terminal overlapping with the high-voltage plug terminal.

In a preferred embodiment, after the second lock catch is disengaged from the second lock hook, the time until the first lock catch is disengaged from the first lock hook is greater than or equal to 0.5 s.

In a preferred embodiment, the number of times of insertion and removal between the high-voltage socket mechanism and the high-voltage plug mechanism is greater than or equal to 9 times.

In a preferred embodiment, the weight of the high-voltage plug mechanism is 305g or less.

In a preferred embodiment, the height of the high-voltage plug mechanism along the plugging direction is less than or equal to 208 mm.

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

The utility model also provides a motor vehicle comprising the high-voltage connecting device.

The utility model has the characteristics and advantages that:

1. the high-voltage connecting device is provided with the injection-molded shielding shell, is simple to process and has much lower cost than the shielding metal shell, and the electromagnetic interference inside the high-voltage connecting device can be effectively shielded by the insertion fit of the shielding shell and the electric connection with the cable shielding layer, so that the electromagnetic interference on other equipment is reduced.

2. The protective baffle is arranged on the high-voltage socket mechanism, so that the first locking hook can be protected from being damaged by external force, the capability of fixing the secondary locking device is lost, the high-voltage connecting device can be electrically disconnected, and electric shock casualties can be caused in serious cases.

3. The primary locking device is provided with the first pressing surface and the first pressing force, so that the primary locking device can be conveniently pressed by fingers of a person, the primary locking device can be unlocked easily, and the operation is convenient.

4. The secondary locking device is provided with the second pressing surface and the second pressing force, so that the secondary locking device can be conveniently pressed by fingers of a person, the secondary locking device can be unlocked easily, and the operation is convenient.

5. According to the high-voltage connecting device, the first locking hook and the second locking hook are both provided with the contact surface and the guide surface, so that when the high-voltage socket mechanism and the high-voltage plug mechanism are oppositely inserted, the first locking hook or the second locking hook can be lifted up and locked with the contact surface through the guide surface, and can only be pressed and contacted to be locked through the pressing part, the operation is convenient, and the safety and the reliability are realized.

6. The primary locking device also comprises an anti-falling device, so that the situation that the normal use is influenced because the high-voltage connecting device is suddenly powered off due to misoperation or unlocking under the action of external force of the primary locking device is prevented.

7. According to the utility model, by arranging the primary locking device and the secondary locking device, the high-voltage interlocking mechanism of the high-voltage connecting device can be disconnected when the primary locking device is released, the high-voltage terminal is not disconnected, when the secondary locking device is released, the control system cuts off the power supply after receiving the disconnection information of the high-voltage interlocking mechanism, the high-voltage terminal is separated without electricity, and the electric arc generated when the high-voltage terminal is separated is avoided.

8. According to the utility model, by setting the time interval between the unlocking of the primary locking device and the unlocking of the secondary locking device, the control system can be ensured to have enough time to cut off the high-voltage power supply, and the condition that the high-voltage connecting device is communicated with high voltage electricity when the locking of the secondary locking device is unlocked is prevented, so that casualties caused by personnel are avoided.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be 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 that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall explosion assembly of the high-pressure connector according to the present invention.

Fig. 2 is a schematic view of the explosion assembly of the high pressure connector housing of the present invention.

Fig. 3 is a schematic structural diagram of a high-voltage socket mechanism according to the present invention.

Fig. 4 is a schematic structural diagram of a high-voltage plug mechanism according to the present invention.

Fig. 5 is a schematic sectional view of the high-voltage plug mechanism according to the present invention.

Fig. 6 is a schematic structural view of the secondary locking device of the present invention.

Fig. 7 is another schematic structural diagram of the secondary locking device of the present invention.

Fig. 8 is a schematic structural diagram of the first and second latch hooks of the present invention.

Fig. 9 is a schematic structural view of the anti-separation device of the present invention.

Fig. 10 is a schematic sectional view showing the assembled high-voltage connection apparatus of the present invention.

Fig. 11 is a schematic view of the high voltage connection of the present invention in place.

Fig. 12 is a schematic cross-sectional view of the high-voltage connection device of the present invention in place.

Fig. 13 is a schematic structural view of the high-voltage connection device of the present invention with the lock opened once.

Fig. 14 is a cross-sectional view of the high-voltage connection device of the present invention with the lock unlocked once.

Fig. 15 is a schematic structural view of the secondary lock opening of the high-voltage connection device of the present invention.

Fig. 16 is a cross-sectional view of the secondary lock opening of the high voltage connector of the present invention.

Wherein:

1. a high voltage socket mechanism; 11. a first latch hook; 12. a protective baffle; 13. a platform; 14. the male end is raised; 111. a hook-shaped body; 112. a cylinder; 1111. a first guide surface; 1112. a first contact surface;

2. a high voltage plug mechanism; 21. a primary locking device; 211. a fixed part; 212. an elastic part; 213. a locking portion; 214. a second lock catch; 215. a first pressing part; 216. a first pressing surface; 22. a locking fastener fixing part; 221. a through hole; 23. a card slot; 24. a female end cavity;

3. a secondary locking device; 31. a first lock catch; 32. a second latch hook; 321. a second guide surface; 322. a second contact surface; 33. a second pressing part; 34. a second pressing surface; 35. a rotating part;

4. an anti-falling device; 41. a hook is clamped; 42. a push-pull section; 43. a blocking sheet;

5. a high voltage plug terminal; 6. a high-voltage plug-in terminal; 7. an interlocking connector; 8. a high-pressure interlock structure;

9. a shielding housing.

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 connecting device comprises a high-voltage socket mechanism 1 and a high-voltage plug mechanism 2 oppositely inserted and connected with the high-voltage socket mechanism 1 in a locking manner, wherein a first locking hook 11 is arranged on the high-voltage socket mechanism 1, a primary locking device 21 and a secondary locking device 3 are arranged on the periphery of the high-voltage plug mechanism 2, one end of the secondary locking device 3 comprises a first locking buckle 31 and can be matched and locked with the first locking hook 11, the other end of the secondary locking device 3 comprises a second locking hook 32, and the primary locking device 21 comprises a second locking buckle 214 and is matched and locked with the second locking hook 32; the secondary locking device 3 is moved to disengage the first latch 31 from the first latch hook 11, thereby disengaging the high voltage plug mechanism 2 from the high voltage socket mechanism 1, as shown in fig. 1 to 5. The high-voltage connecting device comprises high-voltage terminals which are mutually oppositely inserted, when the high-voltage socket mechanism 1 and the high-voltage socket mechanism 1 are accidentally separated or artificially separated, the high-voltage terminals are electrified, electric arcs are generated when the high-voltage terminals are separated, the high-voltage connecting device and a high-voltage circuit are damaged, and casualties can be caused in serious cases. If the high voltage power supply is disconnected every time the high voltage socket mechanism 1 is disconnected from the high voltage socket mechanism 1, a lot of time and manual operations are wasted.

According to the utility model, by arranging the primary locking device 21 and the secondary locking device 3, the high-voltage interlocking mechanism 8 of the high-voltage connecting device can be disconnected when the primary locking device 21 is released, the high-voltage terminal is not disconnected, when the secondary locking device 3 is released, the control system cuts off the power supply after receiving the information that the high-voltage interlocking mechanism 8 is disconnected, the high-voltage terminal is separated without electricity, and electric arcs generated when the high-voltage terminal is separated are avoided.

In one embodiment, the high voltage socket mechanism 1 includes a male end protrusion 14, the high voltage plug mechanism 2 includes a female end cavity 24, both the male end protrusion 14 and the female end cavity 24 include a cylindrical shielding shell 9, and after the male end protrusion 14 and the female end cavity 24 are connected in an opposite insertion manner, the respective shielding shells 9 are in contact and electrically connected, as shown in fig. 10.

The secondary locking mechanism of the existing connecting device is partially arranged inside a shell of the connecting device, so that the closure of the shell of the connecting device is damaged, electromagnetic interference can be radiated from the position of the secondary locking mechanism, and the normal work of other electrical appliances is interfered.

High-voltage socket mechanism 1 and high-voltage plug mechanism 2 set up integrative injection moulding's shielding shell 9, and processing is simple, and the cost is lower a lot than shielding metal casing, through shielding shell 9's grafting cooperation to and the electricity of cable shielding net, can effectually shield the inside electromagnetic interference of high-voltage connection device, reduced other equipment electromagnetic interference. And primary locking device 21 and secondary locking device 3 set up in the periphery of shield shell 9, can not destroy shield shell 9's whole leakproofness, guarantee the shielding effect.

In one embodiment, the high-voltage socket mechanism 1 includes a platform 13 perpendicular to the inserting and extracting direction of the high-voltage plug mechanism 2, and the first locking hook 11 is disposed on the platform 13, as shown in fig. 3.

The platform 13 is arranged on the high-voltage socket mechanism 1, and can be provided with the first latch hook 11, so that the first latch 31 of the secondary locking device 3 can be locked and matched with the first latch hook 11 after the high-voltage plug mechanism 2 is inserted, and the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 cannot be separated. Further, the platform 13 may be provided with an attachment mechanism, which can fix the high-voltage connection device in an attachment environment, and which enables a firm and stable operation.

In one embodiment, the first lock hook 11 includes a cylinder 112 and a hook 111, one end of the cylinder 112 is disposed on the platform 13, the other end extends along the direction of inserting the high voltage plug mechanism 2 and is connected to the hook 111, the hook 111 protrudes out of the side of the cylinder 112 and includes a first contact surface 1112 perpendicular to the direction of inserting and extracting the high voltage plug mechanism 2 and a first guide surface 1111 forming an angle with the direction of inserting and extracting the high voltage plug mechanism 2, as shown in fig. 2 and 5. The first latch 31 of the secondary locking device 3 is in locking fit with the first latch hook 11, the annular first latch 31 needs to be in locking connection with the hook-shaped first latch hook 11, one end of the cylinder 112 of the first latch hook 11 is connected with the platform 13, the other end of the cylinder is connected with the hook-shaped body 111, and the cylinder 112 needs to have certain elasticity, so that when the first latch 31 approaches, the cylinder is deformed to enable the hook-shaped body 111 to enter the latch ring of the first latch hook 31. The hook 111 has a first contact surface 1112 perpendicular to the insertion and extraction direction of the high voltage plug mechanism 2 and is adapted to be in contact engagement with the lock ring of the first lock 31, thereby preventing the lock ring of the first lock 31 from being disengaged from the first contact surface 1112. The hook 111 has a first guide surface 1111 which forms a certain angle with the insertion and extraction direction of the high-voltage plug mechanism 2, and can guide the lock ring of the first lock 31 to be gradually deformed so as to be sleeved on the hook 111.

As shown in fig. 8, the first latch hook 11 is provided with a first contact surface 1112 and a first guide surface 1111, so that when the high-voltage receptacle mechanism 1 and the high-voltage plug mechanism 2 are inserted into each other, the first latch 21 can be lifted up by the first guide surface 1111 and locked with the first contact surface 1112, and can only be locked by the pressing contact of the first pressing portion 215, which is convenient for operation, and is safe and reliable.

The distance from the first contact surface 1112 to the platform 13 is greater than the width of the locking ring of the first locking catch 21, so that the locking ring of the first locking catch 21 can be brought into a position between the first contact surface 1112 and the platform 13 and into contact with the side edge of the cylinder 112.

In an embodiment, the first latch hook 11 further includes a protection baffle 12, the protection baffle 12 is cylindrical, plate-shaped, L-shaped, ring-shaped or U-shaped, one end of the protection baffle 12 is disposed on the platform 13, and the other end extends along the direction of pulling out the high voltage plug mechanism 2, and the height of the protection baffle 12 is greater than or equal to the height of the hook 111.

If the first lock hook 11 is independently arranged on the platform 13 and is located outside the male end bulge 14, when the first lock hook is collided or extruded, the column 112 of the first lock hook 11 is broken or the hook body 111 is damaged, so that the purpose of locking and matching with the first lock catch 21 cannot be achieved. Because the locking of the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 needs the locking cooperation of the first lock hook 11 and the first lock catch 21 to guarantee, if the first lock hook 11 is damaged, the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 are easily loosened by external force, so that a high-voltage loop is interrupted, and the effect of electrical conduction cannot be realized. In addition, the separation of the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 can cause high-voltage electric arcs generated by high-voltage terminals, and can cause damage to high-voltage connecting devices and even casualties.

The protection baffle 12 is arranged on the high-voltage socket mechanism 1, and can protect the first locking hook 11 from being damaged by external force, so that the ability of fixing the second locking device 3 is lost, the high-voltage connecting device can be electrically separated, and electric shock casualties can be caused in severe cases.

The protective baffle 12 is cylindrical, plate-shaped, L-shaped, annular or U-shaped, can protect the first lock hook 11 in a single direction or in a surrounding manner, and has a certain gap with the first lock hook 11, so that the first lock catch 21 can smoothly enter and be locked and matched with the first lock hook 11.

In one embodiment, the primary locking device 21 includes a fixing portion 211, an elastic portion 212, a locking portion 213 and a first pressing portion 215, which are sequentially disposed, wherein one end of the fixing portion 211 is disposed outside the high-voltage plug mechanism 2, and the other end extends along a direction perpendicular to the insertion and extraction direction of the high-voltage plug mechanism 2 and is connected to one end of the elastic portion 212; the elastic portion 212, the locking portion 213, and the first pressing portion 215 are provided along the insertion and extraction direction of the high-voltage plug mechanism 2, and the locking portion 213 is provided with the second latch 214, as shown in fig. 4 and 5.

The primary locking device 21 is formed by injection molding with the high-voltage plug mechanism 2, wherein one end of the fixing portion 211 is integrated with the high-voltage plug mechanism 2, and the other end of the fixing portion 211 extends radially and is connected with the elastic portion 212. The fixing portion 211 and the elastic portion 212 are connected at 90 °, that is, arranged along the plugging and unplugging direction of the high-voltage plug mechanism 2, and the locking portion 213 is provided with a second latch 214 capable of being locked and connected with the second latch hook 32 included in the secondary locking device 3, thereby achieving the purpose of secondary locking. The fixing portion 211 and the elastic portion 212 have a certain elastic force, and can deform toward the high-voltage plug mechanism 2 under the condition that the first pressing portion 215 is stressed, so that the second latch 214 is disengaged from the second latch hook 32, and returns to the original position under the action of the elastic force of the first pressing portion 215, and meanwhile, when the high-voltage plug mechanism 2 is inserted, the fixing portion 211 and the elastic portion 212 deform under the action of the second latch 214 and the second latch hook 32 opposite to each other, and return to the original position after the second latch 214 and the second latch hook 32 are in place, so that the second latch 214 and the second latch hook 32 are locked.

In one embodiment, a surface of the first pressing portion 215 facing away from the high-voltage plug mechanism 2 is a first pressing surface 216, and an area of the first pressing surface 216 is not less than 5mm²As shown in fig. 5.

When the high-voltage connector needs to be unlocked once, the first pressing portion 215 needs to be manually pressed to disengage the second latch 214 from the second latch hook 32 and pull the high-voltage plug mechanism 2 to move in the pulling direction, so that the first pressing portion 215 needs to have a first pressing surface 216 capable of bearing the force of a human finger,the minimum area of the first pressing surface 216 is 5mm²For example, a plane 2mm wide and 2.5mm long, the first pressing portion 215 can be pressed down by a finger. The area of the first pressing surface 216 cannot be too large, and the first pressing surface 215 is easily bumped or pressed during use, so that the first pressing portion 215 is pressed, the second latch 214 is separated from the second latch hook 32, and unexpected interruption of a circuit system is caused. The area of the first pressing surface 216 can be designed according to the overall size of the high-voltage plug mechanism 2.

In order to verify the influence of the area size of the first pressing surface 216 on the pressing of the first pressing portion 215 by the operator, the inventor selects high-voltage connecting devices with the same structure and size, 13 groups of samples are provided for each group of 100 samples, the operator discontinuously presses the first pressing surface 216 and separates the second latch 214 from the second latch hook 32, and the success rate of one-time operation of the operator is recorded and recorded in table 1. In this embodiment, the success rate of one-time operation of the operator is less than 95%.

Table 1: the influence of the area of the first pressing surface 216 on the pressing of the first pressing portion 215 by the operator

As can be seen from the above table 1, when the operator continuously presses the first pressing surface 216 and disengages the second latch 214 from the second latch hook 32, the influence of fatigue of the operator is eliminated, and when the operator presses the primary locking device 21 with different areas of the first pressing surface 216, the area of the first pressing surface 216 is larger than 5mm²When the area of the first pressing surface 216 is equal to 5mm, the operation is successful²In the meantime, the operator has 3 errors, which is 97%, but within the qualified value range, when the area of the first pressing surface 216 is less than 5mm²At this time, since the area of the first pressing surface 216 is too small, the force applied by the fingers of the operator is difficult, and the success rate of one-time operation is reduced to be smaller than the acceptable value range. Therefore, the inventors set the area of the first pressing surface 216 to be equal to or larger than5mm²。

In one embodiment, the first pressing portion 215 receives a first pressing force, so that the elastic portion 212 is deformed to move the locking portion 213 toward the high-voltage plug mechanism 2, and the first pressing force is not more than 135N.

The fixing portion 211 and the elastic portion 212 have a certain elastic force, and can deform toward the high-voltage plug mechanism 2 when the first pressing portion 215 applies the first pressing force, so that the second latch 214 is disengaged from the second latch hook 32, and returns to the original position under the action of the elastic force of itself. The first pressing force is less than or equal to 135N, if the elastic forces of the fixing portion 211 and the elastic portion 212 are too large, so that a large first pressing force needs to be applied to deform the fixing portion 211 and the elastic portion 212, when the high-voltage connecting device needs to be unlocked once, an operator needs to use a large force to disengage the second latch 214 from the second latch hook 32, which is time-consuming and labor-consuming, and may cause certain damage to the fingers of the operator.

In order to verify the influence of the first pressing force on the pressing of the operator on the first pressing portion 215, the inventor selects high-voltage connecting devices with the same structure and size, and 13 sets of samples are provided by different elastic forces of the fixing portion 211 and the elastic portion 212, wherein each set of samples includes 100 samples, the operator discontinuously presses the first pressing portion 215 and separates the second latch 214 from the second latch hook 32, and the success rate of one-time operation of the operator is recorded and recorded in table 2. In this embodiment, the success rate of one-time operation of the operator is less than 95%.

Table 2: influence of the magnitude of the first pressing force on the pressing of the first pressing part 215 by the operator

As can be seen from the above table 2, when the operator continuously presses the first pressing portion 215 and disengages the second latch 214 from the second latch hook 32, the influence of fatigue of the operator is eliminated, when the operator presses the primary locking device 21 with different elastic forces, the operator can successfully operate when the first pressing force is less than 130N, and when the first pressing force is 135N, the operator has 4 errors, which is 96%, but within the acceptable value range, when the first pressing force exceeds 135N, the operator has difficulty in applying force to the fingers due to too large first pressing force, which results in a decrease in success rate of the primary operation, which is less than the acceptable value range. Therefore, the inventors set the first pressing force to 135N or less.

In an embodiment, the primary locking device 21 further includes an anti-separation device 4, a slot 23 is disposed outside the high-voltage plug mechanism 2, the anti-separation device 4 can translate in the slot 23 along the insertion and extraction direction of the high-voltage plug mechanism 2, the anti-separation device 4 includes a hook 41, a blocking piece 43 and a push-pull portion 42, the blocking piece 43 can translate between the first pressing portion 215 and the outside of the high-voltage plug mechanism 2, so as to block the locking portion 213 from moving toward the direction close to the high-voltage plug mechanism 2, as shown in fig. 9.

Although the primary locking device 21 limits the area of the first pressing surface 216 and the size of the first pressing force, and effectively controls the second lock catch 214 and the second lock hook 32 to be separated due to misoperation, for safety, the anti-separation device 4 is further required to be arranged, and in the working state of the high-voltage connecting device, the second lock catch 214 and the second lock hook 32 are limited in the locking state, and are not separated due to misoperation.

The anti-disengaging device 4 is provided with a hook 41, and comprises a hook head and two sliding rods, wherein the hook head and the sliding rods are arranged oppositely, one end of each sliding rod is connected with the hook head, the other end of each sliding rod is connected with the push-pull part 42, the sliding rods on the two sides can slide in the clamping groove 23 in the outer side of the high-voltage plug mechanism 2, and the anti-disengaging device 4 cannot be completely separated from the clamping groove 23 due to the limitation of the hook head and the clamping groove 23. The push-pull portion 42 has a protrusion to allow an operator to easily push and pull the retaining device 4 to the blocking position or the release position. Between the push-pull portion 42 and the hook 41, a blocking piece 43 is arranged, the thickness of the blocking piece 43 is smaller than the distance from the first pressing portion 215 to the housing of the high-voltage plug mechanism 2, after the push-pull portion 42 is pushed, the blocking piece 43 enters the blocking position, namely, between the first pressing portion 215 and the housing of the high-voltage plug mechanism 2, at this time, the first pressing portion 215 is pressed, and due to the blocking of the blocking piece 43, the first pressing portion 215 cannot move towards the direction of the high-voltage plug mechanism 2, and the second lock catch 214 cannot be separated from the second lock hook 32. When the high-voltage connection device needs to be opened, the push-pull portion 42 is first pulled to the disengagement position, that is, the blocking piece 43 is not between the first pressing portion 215 and the housing of the high-voltage plug mechanism 2, and at this time, the first pressing portion 215 is pressed, and the first pressing portion 215 can move toward the high-voltage plug mechanism 2, so that the second latch 214 is disengaged from the second latch hook 32.

The high-voltage connecting device is provided with the anti-falling device 4, so that the situation that the locking of the primary locking device 21 is released due to misoperation or external force action to cause sudden power failure of the high-voltage connecting device and influence on normal use is prevented.

In one embodiment, the secondary locking device 3 further includes a second pressing portion 33 between the first latch 31 and the second latch 32, and a rotating portion 35 disposed on the second pressing portion 33 near the first latch 31, wherein the rotating portion 35 protrudes from the second pressing portion 33, as shown in fig. 6 and 7.

The first lock catch 31 of the secondary locking device 3 is in locking fit with the first lock hook 11 of the high-voltage socket mechanism 1, and the second lock hook 32 of the secondary locking device 3 is in locking fit with the second lock catch 214 of the high-voltage plug mechanism 2. When the second shackle 214 is unlocked from the second latch hook 32, the anti-separation device 4 needs to be opened and the first pressing portion 215 needs to be pressed. When the first latch 31 and the first hook 11 are released, the second pressing portion 33 of the secondary locking device 3 needs to be pressed, and the first latch 31 on the other side of the rotating portion 35 is moved in a direction away from the high-voltage plug mechanism 2 by the lever principle by supporting the second pressing portion 33 on the side wall of the high-voltage plug mechanism 2 with the rotating portion 35 provided on the side of the first latch 31 as a fulcrum, so as to be disengaged from the first hook 11, and the high-voltage outlet mechanism 1 and the high-voltage plug mechanism 2 can be separated.

In one embodiment, the rotating portion 35 is disposed toward the high-voltage plug mechanism 2 and contacts with the outside of the high-voltage plug mechanism 2, and the second pressing portion 33 receives a second pressing force to rotate the secondary locking device 3 around the contact position of the rotating portion 35 and the high-voltage plug mechanism 2, so as to drive the first lock catch 31 to move away from the high-voltage plug mechanism 2, where the second pressing force is less than or equal to 135N, as shown in fig. 6 and 7.

The rotating portion 35 is disposed on the second pressing portion 33 side, faces the high-voltage plug mechanism 2, and contacts the outside of the high-voltage plug mechanism 2, the cross section of the rotating portion 35 is circular, elliptical, triangular, polygonal, or the like, and the rotating portion 35 generally contacts the outside of the high-voltage plug mechanism 2 in a circular arc shape, a triangular shape with a chamfer, or a straight edge shape, and can rotate around the contact point.

The distance between the point of application of the second pressing portion 33 and the rotating portion 35 is smaller than or equal to the distance between the rotating portion 35 and the first latch 31, so that the second pressing portion 33 can move a small distance to move the first latch 31 a large distance to disengage the first latch 31 from the first hook 11. Also, the force applied by the operator to the second pressing portion 33 cannot be too large, which causes difficulty in operation by the operator and a high error rate.

In order to verify the influence of the second pressing force on the pressing of the operator on the second pressing portion 33, the inventor selects the secondary locking device 3 with the same structure and size, 13 groups of samples are provided according to the second pressing force of different second pressing portions 33, each group includes 100 samples, the operator discontinuously presses the second pressing portions 33 respectively to separate the first locking catch 31 from the first locking hook 11, and the success rate of one-time operation of the operator is recorded and recorded in table 3. In this embodiment, the success rate of one-time operation of the operator is less than 95%.

Table 3: influence of the magnitude of the second pressing force on the pressing of the second pressing part 33 by the operator

As can be seen from table 3 above, when the operator continuously presses the second pressing portion 33 and disengages the first latch 31 from the first latch hook 11, the influence of fatigue of the operator is eliminated, when pressing the secondary locking device 3 with different second pressing forces, the operator can successfully operate when the second pressing force is less than 130N, and when the second pressing force is 135N, the operator has 3 errors, which is 97%, but in the acceptable value range, when the second pressing force exceeds 135N, the operator has difficulty in applying force by the fingers due to too large second pressing force, which results in a decrease in success rate of one operation, which is less than the acceptable value range. Therefore, the inventors set the second pressing force to 135N or less.

In one embodiment, a surface of the second pressing portion 33 facing away from the high-voltage plug mechanism 2 is a second pressing surface 34, and an area of the second pressing surface 34 is not less than 0.5cm²。

When the high-voltage connecting device needs to be unlocked for the second time, the second pressing part 33 needs to be manually pressed to separate the first lock catch 31 from the first lock hook 11 and pull the high-voltage plug mechanism 2 to move towards the pulling-out direction, so that the second pressing part 33 needs a second pressing surface 34 capable of bearing the force of a human finger, and the minimum area of the second pressing surface 34 is 5mm²For example, a plane 2mm wide by 2.5mm long, the second pressing surface 34 can be depressed with a finger. The area of the second pressing surface 34 cannot be too large, and the second pressing surface 33 is easily knocked or pressed in the using process to press the second pressing surface, so that the first latch 31 is separated from the first latch hook 11, and unexpected interruption of a circuit system is caused. The area of the second pressing surface 34 can be designed according to the overall size of the high-voltage plug mechanism 2.

In order to verify the influence of the area size of the second pressing surface 34 on the pressing of the second pressing part 33 by the operator, the inventor selects high-voltage connecting devices with the same structure and size, 13 groups of samples with different area sizes of the second pressing surface 34, and 100 samples in each group, the operator discontinuously presses the second pressing surface 34 and separates the first lock catch 31 from the first lock hook 11, and the success rate of one-time operation of the operator is recorded and recorded in table 4. In this embodiment, the success rate of one-time operation of the operator is less than 95%.

Table 4: influence of the area of the second pressing surface 34 on the pressing of the second pressing portion 33 by the operator

As can be seen from Table 4 aboveWhen the operator continuously presses the second pressing surface 34 to separate the first latch 31 from the first latch hook 11, the influence of the fatigue of the operator is eliminated, and when the operator presses the secondary locking device 3 with different areas of the second pressing surface 34, the area of the second pressing surface 34 is larger than 5mm²When the area of the second pressing surface 34 is equal to 5mm, the operation is successful²In the time of (1), the operator has 3 errors, which is 97%, but within the qualified value range, when the area of the second pressing surface 34 is less than 5mm²At this time, since the area of the second pressing surface 34 is too small, the force application by the fingers of the operator is difficult, and the success rate of one-time operation is reduced to be smaller than the acceptable value range. Therefore, the inventors set the area of the second pressing surface 34 to be 5mm or more²。

In one embodiment, the second latch hook 32 protrudes out of the secondary locking device 3 and includes a second contact surface 322 perpendicular to the inserting and pulling direction of the high-voltage plug mechanism 2 and a second guide surface 321 forming an angle with the inserting and pulling direction of the high-voltage plug mechanism 2, as shown in fig. 6 and 7.

The second latch hook 32 of the secondary locking device 3 is lockingly engaged with the second latch 214 of the primary locking device 21, and the second latch hook 32 has a second contact surface 322 perpendicular to the inserting and extracting direction of the high-voltage plug mechanism 2 and is contactingly engaged with the latch ring of the second latch 214, so as to prevent the latch ring of the second latch 214 from being disengaged from the second contact surface 322. The second locking hook 32 has a second guiding surface 321 that forms a certain angle with the plugging direction of the high-voltage plug mechanism 2, and can guide the lock ring of the second lock catch 214 to gradually deform, so as to be sleeved on the second locking hook 32.

As shown in fig. 8, the second latch hook 32 is provided with a second contact surface 322 and a second guide surface 321, so that when the high-voltage receptacle mechanism 1 and the high-voltage plug mechanism 2 are plugged, the second latch 214 can be lifted up and locked with the second contact surface 322 by the second guide surface 321, and can only be locked by the pressing contact of the second pressing portion 33, which is convenient for operation, safe and reliable.

In one embodiment, the outer side surface of the high voltage plug mechanism 2 is further provided with a latch fixing portion 22, the latch fixing portion 22 is provided with a through hole 221 along the inserting and pulling direction of the high voltage plug mechanism 2, and the first latch 31 passes through the through hole 221 and can slide in the through hole 221, as shown in fig. 5.

Because the secondary locking device 3 is an independent part, in order to enable the secondary locking device 3 to be installed on the high-voltage plug mechanism 2, the lock catch fixing part 22 is arranged on the outer side surface of the high-voltage plug mechanism 2, the lock catch fixing part 22 is provided with the through hole 221 along the plugging direction of the high-voltage plug mechanism 2, the cross section size of the through hole 221 is larger than that of the first lock catch 31, the first lock catch 31 can penetrate through the through hole 221 and can slide in the through hole 221, and therefore relative movement can be generated between the high-voltage plug mechanism 2 and the secondary locking device 3, and primary locking is convenient to perform.

In one embodiment, the width of the second pressing portion 33 along the direction perpendicular to the inserting and extracting direction of the high-voltage plug mechanism 2 is greater than the width of the through hole 221.

The section width of the second pressing portion 33 of the secondary locking device 3 is larger than the width of the through hole 221, so that the second pressing portion 33 can be clamped on one side of the through hole 221, when the first lock catch 31 is tightly locked with the first lock hook 11, when an operator opens the primary locking, that is, the second lock catch 214 is separated from the second lock hook 32, and the high-voltage plug mechanism 2 is moved towards the pulling direction, because the first lock catch 31 is tightly locked with the first lock hook 11, the secondary locking device 3 does not move along with the high-voltage plug mechanism 2, but slides in the through hole 221 until the second pressing portion 33 of the secondary locking device 3 is clamped on one side of the through hole 221, at this time, the high-voltage plug mechanism 2 cannot move towards the pulling direction due to the limitation of the secondary locking device 3, and the secondary locking is realized.

In one embodiment, one of the high voltage receptacle mechanism 1 and the high voltage plug mechanism 2 has an interlock connector 7, and the other has a high voltage interlock structure 8, and the high voltage interlock structure 8 is electrically connected to the interlock connector 7 to form a circuit, as shown in fig. 10.

The high-voltage interlocking mechanism is a safety design method for monitoring the integrity of a high-voltage loop by using a low-voltage signal, the realization form of the high-voltage interlocking mechanism is specific, different projects have different designs, and the high-voltage interlocking mechanism is used for monitoring the accidental disconnection of the high-voltage loop and avoiding the damage to an automobile caused by sudden loss of power. In the high-voltage interlocking mechanism in this embodiment, as shown in fig. 10, one end of the high-voltage interlocking mechanism is an interlocking connector 7, which is provided with two opposite pins, and two U-shaped or V-shaped low-voltage loops electrically connected to the pins are not required to be installed, and the two low-voltage loops can be directly molded in the high-voltage socket mechanism 1 and are in matching connection with the high-voltage interlocking structure 8 in the high-voltage plug mechanism 2 in an integral injection molding manner, so as to form a low-voltage monitoring loop.

In one embodiment, one of the high voltage socket mechanism 1 and the high voltage plug mechanism 2 has at least one high voltage plug terminal 5, and the other has at least one high voltage plug terminal 6, and the high voltage plug terminal 5 and the high voltage plug terminal 6 are electrically connected to form a loop, as shown in fig. 1.

The high-voltage connecting device is a part for communicating different wire harnesses or electric devices in a high-voltage loop, and has the function of frequent plugging and unplugging, in order to realize electrical conduction, a terminal of a cable can be connected with a high-voltage terminal, the structure commonly used at present is also a plug-in structure, one end of the plug-in terminal is a female end, the other end of the plug-in terminal is a male end, in the embodiment, the high-voltage socket mechanism 1 and one of the high-voltage plug mechanisms 2 is provided with a high-voltage plug-in terminal 5, the other one is provided with a high-voltage plug-in terminal 6, and the high-voltage plug-in terminal 5 is electrically connected with the high-voltage plug-in terminal 6 to form a loop.

In one embodiment, after the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 are inserted into place, the shortest distance between the latch fixing portion 22 and the second pressing portion 33 is greater than the length of the high-voltage interlocking structure 8 overlapping with the interlocking connector 7 and less than the length of the high-voltage plug terminal 5 overlapping with the high-voltage plug terminal 6.

As shown in fig. 11 and 12, the schematic diagram and the cross-sectional diagram are shown after the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 are oppositely inserted in place, at this time, the first lock catch 31 is in locking fit with the first lock hook 11, the second lock catch 214 is also in locking fit with the second lock hook 32, the high-voltage interlocking structure 8 is oppositely inserted in place with the interlocking connector 7, the high-voltage plug-in terminal 5 is oppositely inserted in place with the high-voltage plug-in terminal 6, at this time, the high-voltage plug-in terminal 5 and the high-voltage plug-in terminal 6 are electrified with high-voltage current, and the high-voltage connection device normally works.

As shown in fig. 13 and 14, which are schematic diagrams and sectional views of the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 that are locked and unlocked once, at this time, the push-pull portion 42 is pulled to the disengaged position, the second latch 214 is disengaged from the second latch hook 32, and the high-voltage plug mechanism 2 moves in the pulling direction, because the first latch 31 is in locking fit with the first latch hook 11, the secondary locking device 3 does not move along with the high-voltage plug mechanism 2, but slides in the through hole 221 until the second pressing portion 33 of the secondary locking device 3 is clamped at one side of the through hole 221, at this time, the high-voltage plug mechanism 2 cannot move in the pulling direction any more due to the restriction of the secondary locking device 3, and thus the secondary locking is realized.

In the high-voltage connecting device, since the distance that the high-voltage plug mechanism 2 moves is the shortest distance a between the latch fixing portion 22 and the second pressing portion 33, the inventor sets the distance to be greater than the length B of the high-voltage interlocking structure 8 and the interlocking connector 7 which are overlapped in an opposite insertion manner and smaller than the length C of the high-voltage plug terminal 5 and the high-voltage plug terminal 6 which are overlapped in an opposite insertion manner, when the high-voltage plug mechanism 2 moves by the distance a, the high-voltage interlocking structure 8 and the interlocking connector 7 can be separated due to a > B, and the high-voltage plug terminal 5 and the high-voltage plug terminal 6 are still in an opposite insertion manner, that is, the high-voltage current is not disconnected. Because the high-voltage interlocking structure 8 is separated from the interlocking connector 7, the low-voltage monitoring circuit can give an alarm to the central control system, so that the automobile is controlled to disconnect the high-voltage circuit, namely, the high-voltage current conducted in the high-voltage plug terminal 5 and the high-voltage plug terminal 6.

As shown in fig. 15 and fig. 16, which are schematic diagrams and sectional views of the secondary locking and unlocking of the high voltage socket mechanism 1 and the high voltage plug mechanism 2, at this time, the first lock 31 is disengaged from the first lock hook 11, and there is no locking mechanism between the high voltage socket mechanism 1 and the high voltage plug mechanism 2, so that the high voltage socket mechanism 1 and the high voltage plug mechanism 2 can be completely separated, and since the high voltage current conducted between the high voltage plug terminal 5 and the high voltage plug terminal 6 has been previously disconnected, the high voltage plug terminal 5 and the high voltage plug terminal 6 are separated at this time, and no arc is generated due to the high voltage current, so that the high voltage socket mechanism 1 and the high voltage plug mechanism 2 can be safely separated.

In the embodiment, by arranging the primary locking device 21 and the secondary locking device 3, the high-voltage interlocking mechanism of the high-voltage connecting device can be disconnected when the primary locking device 21 is released, the high-voltage terminal is not disconnected, when the secondary locking device 3 is released, the control system cuts off the power supply after receiving the information that the high-voltage interlocking mechanism is disconnected, the high-voltage terminal is separated without electricity, and the electric arc generated when the high-voltage terminal is separated is avoided.

In one embodiment, after the second locking catch 214 is disengaged from the second locking hook 32, the time until the first locking catch 31 is disengaged from the first locking hook 11 is greater than or equal to 0.5 s.

When the high-voltage interlocking mechanism of the high-voltage connecting device is disconnected, the low-voltage monitoring circuit gives an alarm to the central control system, so that the automobile is controlled to disconnect the high-voltage circuit, wherein the time in the middle is generally less than 0.1s, but for the sake of safety, after the second lock catch 214 is designed to be separated from the second lock hook 32, the time for separating the first lock catch 31 from the first lock hook 11 is more than or equal to 0.5s, so that when the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 are disconnected, the high-voltage terminal is not electrically separated, and an electric arc when the high-voltage terminal is separated is not generated. The implementation method is that after the second lock catch 214 is separated from the second lock hook 32, an operator needs to move a finger from the first pressing portion 215 to the second pressing portion 33, apply a force to press the finger so as to separate the first lock catch 31 from the first lock hook 11, and then move the high-voltage plug mechanism 2 in the pulling direction, and the time of the actions is greater than or equal to 0.5s by using an action analysis method and a large number of experimental tests, so that the safety when the high-voltage socket mechanism 1 is separated from the high-voltage plug mechanism 2 is ensured.

In one embodiment, the number of times of insertion and removal between the high-voltage outlet mechanism 1 and the high-voltage plug mechanism 2 is 9 or more.

When the high-voltage connecting device is assembled, the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 need to be assembled together, and then maintenance and assembly disassembly are performed, the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 need to be separated and then plugged, so that the plugging frequency between the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 cannot be less than 9 times, if the plugging frequency is less than 9 times, the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 are damaged and cannot play a role of connecting with current in the process of disassembling and maintenance for a certain time, the whole high-voltage connecting device including the wiring harness needs to be completely replaced, not only the maintenance time is consumed, but also the maintenance cost is increased, therefore, no matter the material selection of the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2, or the plugging mechanism, the locking mechanism and the design of the sealing mechanism are adopted, at least 9 times of disassembly and assembly are needed to meet the use requirement of the high-voltage connecting device.

In one embodiment, the weight of the high-voltage plug mechanism 2 is 305g or less.

Generally, the high-voltage socket mechanism 1 is fixed in a use environment, the high-voltage plug mechanism 2 is located above the high-voltage connecting device and is fixedly inserted into the high-voltage socket mechanism 1, when the weight of the high-voltage plug mechanism 2 is too large, the gravity borne by the high-voltage socket mechanism 1 is also large, the whole high-voltage connecting device can vibrate along with the electric device under the condition of vibration, due to the reason of inertia, the high-voltage plug mechanism 2 can bear large vibration and can make abnormal sound, and the abnormal sound is not allowed in the use process of the high-voltage connecting device.

In order to verify the influence of the weight of the high-voltage plug mechanism 2 on the abnormal sound of the high-voltage connecting device, the inventor adopts the same high-voltage socket mechanism 1 and samples of the high-voltage plug mechanism 2 with different weights, installs the samples on a vibration test bench after assembly, performs a vibration test, observes whether the abnormal sound of the high-voltage plug mechanism 2 occurs in the vibration test process, and shows the test result as shown in table 5.

TABLE 5 influence of the weight of the high-voltage plug mechanism 2 on the abnormal sound of the high-voltage connection device

Weight (g)	265	275	285	295	305	315	325	335	345
										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 5, when the weight of the high voltage plug mechanism 2 is greater than 305g, abnormal sound occurs in the high voltage plug mechanism 2 during the vibration test, and the test is failed. The inventors selected the high-voltage plug mechanism 2 to have a weight of 305g or less.

In one embodiment, the height of the high-voltage plug mechanism 2 in the plugging direction is less than or equal to 208 mm.

After the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 are assembled together, the high-voltage socket mechanism needs to be installed in an electricity utilization environment, but under general conditions, the space reserved in the electricity utilization environment is small, if the high-voltage plug mechanism 2 is high, firstly, the high-voltage socket mechanism cannot be installed in the electricity utilization environment, secondly, raw materials are wasted, and therefore the high-voltage plug mechanism 2 needs to be lower than a certain height in design.

In order to verify the influence of the height of the high-voltage plug mechanism 2 along the plugging direction on the installation condition of the high-voltage connecting device, the inventor adopts the same high-voltage socket mechanism 1, samples of the high-voltage plug mechanism 2 with different heights along the plugging direction are assembled and then installed on the electric device, and whether the high-voltage plug mechanism 2 interferes with other parts of the electric environment in the installation process is observed, and the test result is shown in table 6.

TABLE 6 influence of the height of the high-voltage plug mechanism 2 in the plugging direction on the installation of the connection mechanism

Height (mm)	168	178	188	198	208	218	228	238	248
										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 6, when the height of the high voltage plug mechanism 2 in the inserting and extracting direction is greater than 208mm, the high voltage plug mechanism cannot be mounted in the designated position of the high voltage connector, and the test is not qualified. Therefore, the inventors set the height of the high-voltage plug mechanism 2 in the inserting and extracting direction to 208mm or less.

The high-voltage connecting device is provided with the injection-molded shielding shell 9, is simple to process and has much lower cost than a shielding metal shell, and the electromagnetic interference inside the high-voltage connecting device can be effectively shielded and the electromagnetic interference to other equipment is reduced by the insertion fit of the shielding shell 9 and the electric connection with the cable shielding layer.

The high-voltage socket mechanism 1 is provided with the protective baffle 12, so that the first locking hook 11 can be protected from being damaged by external force, the capability of fixing the secondary locking device 3 is lost, the high-voltage connecting device can be electrically disconnected, and electric shock casualties can be caused in serious cases.

The primary locking device 21 of the present invention sets the size of the first pressing surface 216 and the size of the first pressing force, so that the primary locking device 21 can be pressed by the fingers of a person conveniently, and the primary locking device 21 can be unlocked without great effort, thereby facilitating the operation.

The secondary locking device 3 of the present invention sets the size of the second pressing surface 34 and the size of the second pressing force, so that the secondary locking device 3 can be pressed by the fingers of a person conveniently, and the secondary locking device 3 can be unlocked without much effort, thereby facilitating the operation.

According to the high-voltage connecting device, the first locking hook 11 and the second locking hook 32 are both provided with the contact surface and the guide surface, so that when the high-voltage socket mechanism 1 and the high-voltage plug mechanism 2 are oppositely inserted, the first locking hook 11 or the second locking hook 32 can be lifted up and locked with the contact surface through the guide surface, and can only be pressed and contacted to be locked through the pressing part, the operation is convenient, and the high-voltage connecting device is safe and reliable.

The primary locking device 21 of the utility model also comprises an anti-drop device 4, which prevents the primary locking device 21 from being unlocked due to misoperation or external force action, so that the high-voltage connecting device is suddenly powered off and normal use is influenced.

According to the utility model, by arranging the primary locking device 21 and the secondary locking device 3, the high-voltage interlocking mechanism of the high-voltage connecting device can be disconnected when the primary locking device 21 is released, the high-voltage terminal is not disconnected, when the secondary locking device 3 is released, the control system cuts off the power supply after receiving the information of disconnection of the high-voltage interlocking mechanism, the high-voltage terminal is separated without electricity, and the electric arc generated when the high-voltage terminal is separated is avoided.

According to the utility model, by setting the time interval between the unlocking of the primary locking device 21 and the unlocking of the secondary locking device 3, the control system can be ensured to have enough time to cut off the high-voltage power supply, the condition that the high-voltage connecting device is communicated with high voltage when the locking of the secondary locking device 3 is unlocked is prevented, and casualties caused by personnel are avoided.

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 without departing from the spirit and scope of the present invention based on the disclosure of the application document.

Claims

1. A high-voltage connecting device comprises a high-voltage socket mechanism and a high-voltage plug mechanism which is oppositely inserted into the high-voltage socket mechanism and connected with the high-voltage socket mechanism in a locking manner, and is characterized in that a first locking hook is arranged on the high-voltage socket mechanism, a primary locking device and a secondary locking device are arranged on the periphery of the high-voltage plug mechanism, one end of the secondary locking device comprises a first locking buckle and can be locked with the first locking hook in a matching manner, the other end of the secondary locking device comprises a second locking hook, and the primary locking device comprises a second locking buckle and is locked with the second locking hook in a matching manner; the secondary locking device is moved to separate the first lock catch from the first lock hook, so that the high-voltage plug mechanism is separated from the high-voltage socket mechanism.

2. The high voltage connection device of claim 1, wherein the high voltage socket mechanism comprises a male protrusion, the high voltage plug mechanism comprises a female cavity, the male protrusion and the female cavity both comprise shielding shells, and after the male protrusion and the female cavity are inserted into each other, the shielding shells contact and are electrically connected.

3. The high voltage connection device of claim 1, wherein the high voltage socket mechanism comprises a platform perpendicular to the plugging direction of the high voltage plug mechanism, and the first latch is disposed on the platform.

4. The high-voltage connection device according to claim 3, wherein the first locking hook comprises a cylinder and a hook, one end of the cylinder is arranged on the platform, the other end of the cylinder extends along the pulling direction of the high-voltage plug mechanism and is connected with the hook, and the hook protrudes out of the side surface of the cylinder and comprises a first contact surface perpendicular to the pulling direction of the high-voltage plug mechanism and a first guide surface forming a certain angle with the pulling direction of the high-voltage plug mechanism.

5. The high-voltage connection device according to claim 4, wherein the first latch further comprises a protective baffle, the protective baffle is cylindrical, plate-shaped, L-shaped, annular or U-shaped, one end of the protective baffle is arranged on the platform, the other end of the protective baffle extends along the pulling direction of the high-voltage plug mechanism, and the height of the protective baffle is greater than or equal to the height of the hook body.

6. The high-voltage connecting device as claimed in claim 1, wherein the primary locking device comprises a fixing portion, an elastic portion, a locking portion and a first pressing portion, the fixing portion is disposed on an outer side of the high-voltage plug mechanism, and the fixing portion extends in a direction perpendicular to a plugging direction of the high-voltage plug mechanism and is connected to one end of the elastic portion; the elastic part, the locking part and the first pressing part are arranged along the plugging direction of the high-voltage plug mechanism, and the locking part is provided with the second lock catch.

7. The high-voltage connecting device according to claim 6, wherein a surface of the first pressing portion facing away from the high-voltage plug mechanism is a first pressing surface, and an area of the first pressing surface is greater than or equal to 5mm²。

8. The high-voltage connection device according to claim 6, wherein the first pressing portion receives a first pressing force to deform the elastic portion and move the locking portion toward the high-voltage plug mechanism, and the first pressing force is not more than 135N.

9. The high-voltage connection device according to claim 6, wherein the primary locking device further comprises an anti-separation device, a slot is disposed on an outer side of the high-voltage plug mechanism, the anti-separation device can move horizontally in the slot along a plugging direction of the high-voltage plug mechanism, the anti-separation device comprises a hook, a blocking piece and a push-pull portion which are sequentially connected, the blocking piece can move horizontally between the first pressing portion and the outer side of the high-voltage plug mechanism, and therefore the locking portion is prevented from moving towards a direction close to the high-voltage plug mechanism.

10. The high-voltage connection device according to claim 1, wherein the secondary locking device further comprises a second pressing portion between the first latch and the second latch hook, and a rotating portion disposed on the second pressing portion on a side close to the first latch, the rotating portion protruding from the second pressing portion.

11. The high-voltage connection device according to claim 10, wherein the rotating portion is disposed toward the high-voltage plug mechanism and contacts with an outer side of the high-voltage plug mechanism, and the second pressing portion receives a second pressing force to rotate the secondary locking device around a contact position of the rotating portion and the high-voltage plug mechanism, so as to move the first latch away from the high-voltage plug mechanism, wherein the second pressing force is less than or equal to 135N.

12. The high-voltage connection device according to claim 10, wherein a surface of the second pressing portion facing away from the high-voltage plug mechanism is a second pressing surface, and an area of the second pressing surface is not less than 5mm²。

13. The high-voltage connection device as claimed in claim 1, wherein the second latch hook protrudes from the secondary locking device and includes a second contact surface perpendicular to the plugging direction of the high-voltage plug mechanism and a second guide surface forming an angle with the plugging direction of the high-voltage plug mechanism.

14. The high voltage connection device as claimed in claim 10, wherein the outer side of the high voltage plug mechanism is further provided with a locking fixing portion, the locking fixing portion is provided with a through hole along the plugging direction of the high voltage plug mechanism, and the first locking device passes through the through hole and can slide in the through hole.

15. The high-voltage connecting device according to claim 14, wherein the width of the second pressing portion along a direction perpendicular to the plugging direction of the high-voltage plug mechanism is greater than the width of the through hole.

16. The high voltage connection of claim 15, wherein one of the high voltage receptacle means and the high voltage plug means has an interlock connector and the other has a high voltage interlock structure, the high voltage interlock structure being electrically connected to the interlock connector to form a circuit.

17. The high voltage connection of claim 16, wherein one of said high voltage socket means and said high voltage plug means has at least one high voltage mating terminal and the other has at least one high voltage mating terminal, said high voltage mating terminal being electrically connected to said high voltage mating terminal to form a circuit.

18. The high voltage connection device of claim 17, wherein after the high voltage socket mechanism and the high voltage plug mechanism are inserted into place, the shortest distance between the locking fixing portion and the second pressing portion is greater than the length of the high voltage interlocking structure overlapping with the interlocking connector and less than the length of the high voltage plug terminal overlapping with the high voltage plug terminal.

19. The high-voltage connection device as claimed in claim 1, wherein the time from the disengagement of the second latch and the second latch hook to the disengagement of the first latch and the first latch hook is 0.5s or more.

20. The high voltage connection device according to claim 1, wherein the number of times of insertion and removal between the high voltage socket means and the high voltage plug means is 9 or more times.

21. The high voltage connection arrangement according to claim 1, wherein the weight of the high voltage plug means is 305g or less.

22. The high-voltage connection arrangement according to claim 1, characterized in that the height of the high-voltage plug means in the plugging direction is 208mm or less.

23. An electrical energy transmission device comprising a high voltage connection according to any one of claims 1 to 22.

24. A motor vehicle, characterized in that it comprises a high-voltage connection according to any one of claims 1-22.