CN115425462A

CN115425462A - Electric connection plug, electric connection device and electric automobile

Info

Publication number: CN115425462A
Application number: CN202210475110.8A
Authority: CN
Inventors: 张建平; 黄春华
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-12-02

Abstract

The invention discloses an electric connection plug, an electric connection device and an electric automobile, wherein the electric connection plug is arranged on the electric automobile and used for being plugged in an electric connection socket of an automobile end electric connector, the electric connection plug comprises a shell, a plug and a cable plugging port, the plug and the cable plugging port are arranged at two ends of the shell, the plug is used for being connected with a cable and plugged in the electric connection socket, the cable plugging port is used for plugging the cable, and the opening direction of the cable plugging port is consistent with the plugging direction of the plug. The cable need not to turn the adjustment direction in the electric connection plug outside, can realize the electric connection between rear-drive electric automobile's cable and the car end electric connector, through electric connection plug and electric connection socket to cable fixed connection, can prevent that the cable from rocking, has effectively avoided taking place electric connection not hard up phenomenon, has improved electric connection device's reliable and stable nature greatly.

Description

Electric connection plug, electric connection device and electric automobile

Technical Field

The invention relates to an electric connection plug, an electric connection device and an electric automobile.

Background

The electric automobile generally adopts a replaceable battery pack, and the battery pack can be taken down at any time for replacement or charging and then is installed on the automobile body after the replacement or charging is finished. In the existing electric automobile with a replaceable structure, a cable on the electric automobile is plugged in a socket of an automobile end electric connector through a plug, a corresponding installation position is arranged on an automobile body bracket of an automobile body, a battery pack is connected with the automobile end electric connector on the automobile body through the battery end electric connector after being placed in the installation position, and then the battery pack is fixed by using a locking device. In this process, the electrodes of the battery-end electrical connectors on the battery pack need to be in contact with the electrodes on the vehicle-end electrical connectors to ensure power output.

At present, the mounted position relatively fixed of car end electric connector, car end electric connector generally installs the front end at electric automobile, adopt forerunner's drive mode to electric automobile, the cable can pass through on plug disect insertion to the socket of car end electric connector, but adopt the drive mode of rear-guard to electric automobile, then the cable need buckle 180 degrees directions just can peg graft the plug on the socket of the car end electric connector of electric automobile front end, cable turning radius is big, it is not hard up easily to lead to the electricity to connect, correspondingly connect the cable on car end electric connector receive the cable pulling force great at the position of buckling and tie point, it is not hard up easily to cause the electricity to connect, cause the electricity to fail or burn out etc. unusually even, influence electricity connection reliability and life easily.

Disclosure of Invention

The invention aims to overcome the defects that in the prior art, the turning radius of a cable is large, electric connection is easy to loosen, even the electric connection is abnormal such as failure or burnout, and the stability and reliability of electric connection and the service life are easy to influence, and provides an electric connection plug, an electric connection device and an electric automobile.

The invention solves the technical problems through the following technical scheme:

an electric connection plug is arranged on an electric automobile and used for being plugged in an electric connection socket of an electric connector at the automobile end, the electric connection plug comprises a shell, a plug and a cable plugging port, the plug and the cable plugging port are arranged at two ends of the shell, the plug is used for being connected with a cable and plugged in the electric connection socket, the cable plugging port is used for plugging the cable, and the opening direction of the cable plugging port is consistent with the plugging direction of the plug.

In this scheme, adopt above-mentioned structural style, the opening direction of cable interface is unanimous with the grafting direction of bayonet joint, the one end of casing is connected with the cable through the cable interface, the bayonet joint of the other end of casing is pegged graft with the electric connection socket of car end electric connector mutually, through the casing, electric connection between socket and the cable is realized to bayonet joint and cable interface, the cable need not to turn the adjustment direction in the electric connection plug outside, can realize the electric connection between cable and the car end electric connector of back drive formula electric automobile, simultaneously through electric connection socket and electric connection socket to cable fixed connection, prevent that the cable from rocking, effectively avoided taking place electric connection not hard up phenomenon, electric connection device's stable and reliable has been improved greatly, electric connection device's life is prolonged.

Preferably, the plug is disposed in the housing for inserting the electrical connection socket.

In this scheme, adopt above-mentioned structural style, have the guard action through the casing, effectively avoid the electrical connection point between bayonet joint and the electric connection socket to expose outside, connect reliable and stable, improved electric connection device's safety and stability greatly.

Preferably, the housing includes a plug mounting portion and a cable mounting portion, the plug mounting portion and the cable mounting portion have the same extending direction, the plug mounting portion and the cable mounting portion are respectively provided with a plug cavity and a cable cavity therein, the cable interface is provided at the end of the cable mounting portion and communicated with the cable cavity, the plug is provided in the plug cavity, and the cable is inserted in the cable cavity.

In the scheme, the plug connector is arranged in the plug cavity by adopting the structural form, and the electric connection socket extends into the shell and is mutually plugged with the plug connector, so that the electric connection point between the plug connector and the electric connection socket is effectively prevented from being exposed outside; the cable is inserted into the cable cavity, so that the electric connection point between the plug connector and the cable is effectively prevented from being exposed outside, the connection is stable and reliable, and the safety and stability of the electric connection device are greatly improved. Meanwhile, the extension directions of the plug installation part and the cable installation part are consistent, the insertion direction of the cable inserted into the cable cavity is the same as the insertion direction of the electric connection socket inserted into the plug, the cable does not need to turn around and adjust and turn outside the electric connection plug, the installation and the connection are very convenient, the phenomenon of electric connection looseness is effectively avoided, and the electric connection is stable and reliable.

Preferably, the housing includes a first connecting portion, the first connecting portion is connected to the plug mounting portion and the cable mounting portion, a channel is provided in the first connecting portion, and the channel communicates with the cable cavity and the plug cavity.

In the scheme, by adopting the structural form, the electric connection between the plug connector and the cable can be conveniently realized through the channel, so that the 180-degree direction change of the connection direction is realized, the cable does not need to turn at the outer part of the electric connection plug to adjust the direction, and the problem of poor electric connection stability of the rear drive of the electric automobile is effectively solved; meanwhile, the shell is simple in overall structure and convenient to process and manufacture.

Preferably, the plug mounting part is provided with a first sealing ring for sealing connection with the electric connection socket;

and/or the cable installation part is provided with a second sealing ring which is used for being connected with the cable in a sealing way.

In this scheme, adopt above-mentioned structural style, realize sealed between casing and electric connection socket, the cable interface respectively through first sealing washer and second sealing washer, simultaneously, realize that the casing is connected socket, the floating electricity of cable interface is connected with the electric connection, further guarantees the stability of electric connection.

Preferably, the outer surface of the plug mounting part is provided with at least one first mounting lug connected with the electric connection socket;

and/or, the surface of cable installation department be equipped with at least one with electric automobile is connected second installation ear.

In this scheme, adopt above-mentioned structural style, the casing is connected with electric connection socket through first installation ear, has strengthened the joint strength between casing and the electric connection socket, has effectively avoided taking place to break away from the phenomenon between bayonet joint and the electric connection socket, has improved the safety and stability that electric connection plug and electric connection socket are connected.

In addition, the shell is connected with the electric automobile through the second mounting lug, so that the electric connection plug is fixed, the phenomenon of offset and dislocation of the electric connection plug is effectively avoided, and the stability and the reliability of the electric connection device are improved.

Preferably, an end cover is arranged at an end of the cable installation part, one end of the end cover is sleeved on the cable installation part, and the other end of the end cover is sleeved on the cable so as to fix the cable on the cable plugging port.

In this scheme, adopt above-mentioned structural style, connect reliable and stable between cable and the cable interface, and the erection joint is convenient.

Preferably, the electrical connection plug includes a cover plate, a first mounting opening is opened on a side of the housing away from the vehicle-end electrical connector, and the cover plate is connected to the housing and completely covers the first mounting opening.

In this scheme, adopt above-mentioned structural style, it is very convenient to realize electric connection plug installation connection through first installation mouth. Simultaneously, cover first installing port through the apron, realize the protection that covers to electric connection plug inner structure, improve electric connection device's reliable and stable nature.

Preferably, the electrical connection plug includes an insulating sleeve, the insulating sleeve is located in the housing, and the insulating sleeve covers the plug and at least a portion of the cable.

In this scheme, adopt above-mentioned structural style, insulating cover plays the guard action to plug connector, electric connection socket and cable, has good insulating, sealed effect to electric connection plug, electric connection socket and cable, can effectively solve the unstable problem of electricity connection, has improved electric connecting device's security greatly.

Preferably, the insulation sleeve comprises a sleeve body and an insulation sheet, the sleeve body is sleeved on the plug connector and at least part of the cable, a second mounting opening is formed in one side of the sleeve body facing the first mounting opening, and the insulation sheet is arranged in the shell through the first mounting opening and completely covers the second mounting opening.

In this scheme, adopt above-mentioned structural style, it is very convenient to realize electric connection plug installation connection through first installing port and second installing port. Meanwhile, the second mounting port is covered through the insulating sheet, so that the insulation protection of the plug connector and at least part of cables is realized, and the safety of the electric connection device is greatly improved.

Preferably, one end of the sleeve body, which is sleeved on the plug connector, is provided with a sleeve portion and a closing portion, the plug connector is located in the sleeve portion, and the closing portion is connected to the end portion of the sleeve portion.

Preferably, the inner diameter of the closing-in portion is smaller than the inner diameter of the sleeve portion, the closing-in portion abuts against the plug to limit the plug in the sleeve portion, and the electrical connection socket penetrates through the closing-in portion and is inserted into the plug.

In this scheme, adopt above-mentioned structural style, establish the change of internal diameter between portion and the binding off portion through the cover, binding off portion with the bayonet joint spacing locate the cover establish the portion in, effectively avoid the bayonet joint to take place skew dislocation phenomenon, at the in-process that bayonet joint and electric connection socket peg graft, binding off portion is used for guiding electric connection socket to get into the cover establish the portion in, has further improved the stability that bayonet joint and cable, electric connection socket are connected. Meanwhile, the insulating sleeve always performs an insulating protection effect with the plug connector, so that the safety of the electric connection device is greatly improved.

Preferably, one end of the sleeve body, which is sleeved on the plug connector, is provided with a contact pin, and the contact pin is arranged on the outer surface of the sleeve part and is used for being plugged with a jack of the electric connection socket.

In this scheme, adopt above-mentioned structural style, reach high-pressure interlocking effect through the contact pin, avoid hot plug, prevent to burn out and prevent the incident that the manual maloperation causes, the security is high.

Preferably, the outer diameter of the closing portion is smaller than the outer diameter of the sleeving portion, a plurality of guiding limiting portions are arranged between the sleeving portion and the closing portion, and the guiding limiting portions extend from the outer surface of the closing portion to the sleeving portion along an inclined direction.

In the scheme, by adopting the structure, the guide limiting part has a guide function, and the connecting hole for guiding the electric connection socket is sleeved on the sleeving part, so that the mutual accurate insertion of the plug connector and the electric connection socket is realized; meanwhile, the guide limiting part has a reinforcing effect, so that the connection strength between the closing part and the sleeving part is effectively enhanced, and the stability of the electric connection device is improved.

Preferably, the electrical connection plug further includes a flexible conductive member, and the flexible conductive member is disposed in the housing and is used for connecting the plug and the cable.

In the scheme, by adopting the structure, the electric connection plug is electrically connected with the cable and the electric connection socket through the flexible conductive piece, so that the direction of the cable does not need to be adjusted by turning; meanwhile, the flexible conductive piece can deform, floating electric connection between the flexible conductive piece and the cable and between the flexible conductive piece and the electric connection socket is achieved, electric connection failure is effectively avoided, and reliability and service life of the electric connection device during electric connection are greatly improved.

Preferably, the flexible conductive member includes a second connecting portion, a flexible portion and a third connecting portion, which are connected in sequence, the plug is connected to the second connecting portion, and the cable is connected to the third connecting portion.

In the scheme, by adopting the structure form, the flexible conductive piece is bent and deformed by the good flexibility of the flexible part; the second connecting part and the third connecting part are respectively connected with the plug connector and the cable, so that stable and reliable connection is realized.

Preferably, the second connecting part and the plug are in mutual compression joint, riveting or bolt connection;

and/or the third connecting part and the cable are mutually pressed, riveted or bolted.

In the scheme, the structure is adopted, so that a proper connection mode can be selected according to space, cost and the like for connection.

Preferably, the flexible portion is made of a flexible conductive material.

In this scheme, adopt above-mentioned structural style, flexible conductive piece is when using, and flexible portion elongatable or compression and radial torsion are adaptable flexible conductive piece and the relative displacement change of each angle such as axial, radial between bayonet joint and the cable junction, avoid leading to flexible conductive piece electricity connection performance deterioration because of relative displacement's change, have improved the stability that electric connecting device electricity is connected greatly.

An electrical connection device comprising an electrical connection receptacle and an electrical connection plug as described above.

In this scheme, adopt above-mentioned structural style, the opening direction of cable interface is unanimous with the grafting direction of bayonet joint, through the casing, electric connection between electric connection socket and the cable of car end electric connector is realized to bayonet joint and cable interface, the cable need not to turn the adjustment direction in the electric connection plug outside, can realize the electric connection between cable and the car end electric connector of back drive formula electric automobile, simultaneously through electric connection bayonet joint and electric connection socket to cable fixed connection, prevent that the cable from rocking, the electric connection looseness phenomenon has effectively been avoided taking place, electric connection device's stable reliability has been improved greatly, electric connection device's life is prolonged.

Preferably, the electrical connection socket is provided with at least one mounting hole connected with the electrical connection plug.

In this scheme, adopt above-mentioned structural style, electric connection plug passes through the mounting hole with the electric connection socket and is connected, has strengthened the joint strength between electric connection plug and the electric connection socket, has effectively avoided taking place the separation phenomenon between electric connection plug and the electric connection socket, has improved the safety and stability that electric connection plug and electric connection socket are electric.

An electric vehicle comprising an electrical connection device as described above.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows:

according to the electric connection plug, the electric connection device and the electric automobile, the cable socket at one end of the shell is connected with the cable, the plug at the other end of the shell is plugged with the electric connection socket of the automobile-end electric connector, the opening direction of the cable socket is consistent with the plugging direction of the plug, the electric connection socket and the cable are electrically connected through the shell, the plug and the cable socket, the cable does not need to turn to adjust the direction outside the electric connection plug, the electric connection between the cable of the rear-drive electric automobile and the automobile-end electric connector can be realized, meanwhile, the cable is fixedly connected through the electric connection plug and the electric connection socket, the cable is prevented from shaking, the electric connection loosening phenomenon is effectively avoided, and the stability and the reliability of the electric connection device are greatly improved.

Drawings

Fig. 1 is a partial structural schematic diagram of an electric vehicle according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an electrical connection device according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structural view of an electrical connection device according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an electrical connection plug according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a housing according to an embodiment of the invention.

Fig. 6 is another perspective structural diagram of the housing according to the embodiment of the invention.

Fig. 7 is a schematic structural view of a sleeve body according to an embodiment of the present invention.

Fig. 8 is another perspective structural diagram of the sleeve body according to the embodiment of the invention.

Fig. 9 is a schematic structural diagram of an insulating sheet according to an embodiment of the invention.

Description of reference numerals:

housing 1

Plug mounting part 11

Plug cavity 111

First seal ring 112

First mounting ear 113

Cable fitting part 12

Cable cavity 121

Second seal ring 122

Second mounting ear 123

Snap bumps 124

First connection portion 13

Channel 131

The first reinforcing bead 132

Second reinforcing bead 14

First mounting opening 15

Plug-in connector 2

Cable connector 3

Flexible conductive member 4

Second connecting part 41

Flexible portion 42

Third connecting portion 43

Cover plate 5

Third seal ring 51

Insulating sleeve 6

Sleeve body 61

Second mounting port 611

Sleeving part 612

Closing part 613

Pin 614

Guide stopper 615

First guide 616

Second guide part 617

End 618

Intermediate portion 619

Insulating sheet 62

Step 621

Pressing part 622

Dodging groove 623

Reinforcing bar 624

Shielding ring 7

End cap 8

Latch 81

Socket 82

Electrical connection plug 10

Electrical connection socket 20

Mounting hole 201

Cable 30

Detailed Description

The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.

The embodiment of the invention discloses an electric automobile which comprises an electric connecting device. As shown in fig. 1 to 9, the electrical connection device includes an electrical connection socket 20 and an electrical connection plug 10. The electric connection plug 10 is arranged on an electric automobile, the electric connection socket 20 is arranged on an automobile end electric connector of the electric automobile, and the electric connection plug 10 is used for being plugged on the electric connection socket 20, so that the electric connection between the electric connection socket 20 and the electric connection plug 10 is realized. Specifically, the electrical connection plug 10 is a high voltage plug for electrically connecting two high voltage components, one of the high voltage components is a vehicle end electrical connector, and the other high voltage component is an electrical device such as a generator of an electric vehicle. The vehicle-end electric connector comprises a high-voltage pole which is electrically connected with the electric connection plug 10 through an electric connection socket 20.

As shown in fig. 2, 3 and 6, the electrical connection plug 10 includes a housing 1, a plug 2 and a cable plug 3, the plug 2 and the cable plug 3 are disposed at two ends of the housing 1, the plug 2 is used for connecting with a cable 30 and plugging into the electrical connection socket 20, the cable plug 3 is used for plugging the cable 30, and an opening direction of the cable plug 3 is the same as a plugging direction of the plug 2. The opening direction of the cable socket 3 is a direction in which the cable socket 3 faces the cable 30 and approaches the cable 30, and the plugging direction of the plug 2 is a direction in which the plug 2 is plugged into the electrical connection socket 20 and approaches the electrical connection socket 20.

Specifically, casing 1's whole is the C type structure of buckling, 1 both ends of casing are located to bayonet joint 2 and cable interface 3, the opening direction through cable interface 3 is unanimous with bayonet joint 2's grafting direction, cable 30's one end is pegged graft in cable interface 3 and is connected with bayonet joint 2 electricity, cable 30's the other end outwards extends and its extending direction is unanimous with bayonet joint 2's grafting direction from cable interface 3, cable 30's the other end can extend to electric automobile's rear end, and be connected with consumer such as the generator of electric automobile rear end. Plug 2 removes in order to realize plug 2 pegs graft in electric connection socket 20 along the grafting direction, realize electric connection plug 10 and cable 30, the electricity is connected between electric connection socket 20, and cable 30 need not at the outside adjustment direction of turning of electric connection plug 10, can realize the electric connection between back drive formula electric automobile's cable and the car end electric connector, through electric connection plug 10 and electric connection socket 20 to cable 30 fixed connection simultaneously, prevent that cable 30 from rocking, the not hard up phenomenon of electric connection has effectively been avoided taking place, electric connection device's reliability and stability is greatly improved, electric connection device's life is prolonged.

In the present embodiment, the plug 2 is disposed in the housing 1 for inserting the power supply connection socket 20. The electric connection socket 20 extends into the casing 1 and is mutually inserted with the plug connector 2, the casing 1 has a protection effect, electric connection points between the plug connector 2 and the electric connection socket 20 are effectively prevented from being exposed outside, the connection is stable and reliable, and the safety and stability of the electric connection device are greatly improved.

As shown in fig. 3, the housing 1 includes a plug mounting portion 11 and a cable mounting portion 12, the extension directions of the plug mounting portion 11 and the cable mounting portion 12 are the same, a plug cavity 111 and a cable cavity 121 are respectively disposed in the plug mounting portion 11 and the cable mounting portion 12, the cable insertion port 3 is disposed at an end portion of the cable mounting portion 12 and communicated with the cable cavity 121, the plug 2 is disposed in the plug cavity 111, and the cable 30 is inserted into the cable cavity 121 through the cable insertion port 3. The plug 2 is arranged in the plug cavity 111, and the electric connection socket 20 extends into the shell 1 and is mutually plugged with the plug 2, so that the electric connection point between the plug 2 and the electric connection socket 20 is effectively prevented from being exposed; the cable 30 is inserted into the cable cavity 121, so that the electric connection point between the plug connector 2 and the cable 30 is effectively prevented from being exposed outside, the connection is stable and reliable, and the safety and stability of the electric connection device are greatly improved. Meanwhile, the extending directions of the plug installation part 11 and the cable installation part 12 are consistent, so that the extending directions of the plug installation part 11 and the cable installation part 12 are parallel to each other, the cable 30 is inserted in the cable cavity 121 and is inserted in the same inserting direction of the plug connector 2 with the electric connection socket 20, the cable 30 does not need to turn around and adjust and turn around outside the electric connection plug 10, the electric connection between the cable of the rear-drive electric automobile and the automobile end electric connector can be realized, the installation and the connection are very convenient, the electric connection looseness phenomenon is effectively avoided, and the electric connection is stable and reliable.

As shown in fig. 3 and 5, the housing 1 includes a first connecting portion 13, the first connecting portion 13 connects the plug mounting portion 11 and the cable mounting portion 12, a channel 131 is provided in the first connecting portion 13, the channel 131 communicates the cable cavity 121 and the plug cavity 111, and the electrical connection between the plug 2 and the cable 30 is facilitated through the channel 131. In this embodiment, the two ends of the first connecting portion 13 are respectively provided with the plug mounting portion 11 and the cable mounting portion 12 which are arranged in parallel, the extending direction of the first connecting portion 13 is perpendicular to the plug mounting portion 11 and the cable mounting portion 12, so that the overall cross-sectional shape of the housing 1 is a C-shape, thereby realizing the change of the connection direction between the plug 2 and the cable 30 by 180 degrees, the cable 30 does not need to turn to adjust the direction outside the electrical connection plug 10, and the problem of poor electrical connection stability of the rear drive of the electric vehicle is effectively solved; meanwhile, the shell 1 is simple in overall structure and convenient to process and manufacture.

The first connecting portion 13 has a first rib 132. The first reinforcing rib 132 is located in the channel 131, and the structural strength of the housing 1 can be effectively enhanced through the first reinforcing rib 132, so that the stability and reliability of the electric connection plug 10 are improved, and the service life of the electric connection plug 10 is prolonged.

In this embodiment, the plug mounting portion 11, the cable mounting portion 12 and the first connecting portion 13 are integrally formed, so that the overall structural strength of the housing 1 is high, and the electrical connection between the electrical connection plug 10 and the electrical connection socket 20 and the cable 30 is ensured to be stable and reliable. Of course, in other embodiments, the plug mounting portion 11, the cable mounting portion 12, and the first connecting portion 13 may be of a split structure.

As shown in fig. 3, electrical connector plug 10 further includes a flexible electrically conductive member 4, flexible electrically conductive member 4 being disposed within housing 1 and being adapted to connect plug 2 to cable 30. The flexible conductive member 4 passes through the channel 131, and two ends of the flexible conductive member 4 respectively extend into the plug cavity 111 and the cable cavity 121 and are respectively connected with the plug connector 2 and the cable 30 in the plug cavity 111 and the cable cavity 121, so that the cable 30, the flexible conductive member 4, the plug connector 2 and the electrical connection socket 20 are electrically connected. The electric connection plug 10 is electrically connected with the cable 30 and the electric connection socket 20 through the flexible conductive piece 4, so that the direction of the cable 30 does not need to be adjusted by turning in the shell 1; meanwhile, the flexible conductive piece 4 can deform and has a small turning radius, floating electrical connection between the flexible conductive piece 4 and the cable 30 and between the flexible conductive piece and the electrical connection socket 20 is achieved, electrical connection failure is effectively avoided, and reliability and service life of the electrical connection device during electrical connection are greatly improved.

The flexible conductive member 4 includes a second connection portion 41, a flexible portion 42 and a third connection portion 43 connected in sequence, the plug 2 is connected to the second connection portion 41, and the cable 30 is connected to the third connection portion 43. Flexible conductive piece 4 has good flexibility through flexible portion 42 to realize bending deformation of flexible conductive piece 4; the flexible conductive piece 4 is connected with the plug 2 and the cable 30 through the second connection portion 41 and the third connection portion 43, so that stable and reliable connection is realized.

The second connecting portion 41 and the plug 2 may be connected by pressing, riveting or bolting to each other to electrically connect the electrical connection plug 10 and the electrical connection socket 20, so that a suitable connection manner may be selected according to space, cost, etc. for connection. The third connecting portion 43 and the cable 30 may be pressed, riveted or bolted to each other to electrically connect the electrical connection plug 10 and the cable 30, so that an appropriate connecting manner may be selected according to space, cost, and the like.

The flexible portion 42 is made of a flexible conductive material. When the flexible conductive piece 4 is used, the flexible portion 42 can be stretched or compressed and twisted in the radial direction, so that the relative displacement change of all angles such as the axial direction and the radial direction between the connection of the flexible conductive piece 4 and the plug connector 2 and the cable 30 can be adapted, the electric connection performance of the flexible conductive piece 4 is prevented from being deteriorated due to the change of the relative displacement, and the electric connection stability of the electric connection device is greatly improved.

In the present embodiment, the flexible portion 42 is a braided metal conductive strip. Of course, in other embodiments, the flexible portion 42 may be an elastic conductive wire, the flexible portion 42 may also be a conductive spring, and the specific shape and structure of the flexible portion 42 may not be limited as long as the flexible portion 42 can be bent and deformed.

As shown in fig. 3, the plug mounting portion 11 has a first gasket 112 for sealing connection between the plug mounting portion 11 and the electrical connection socket 20. The electric connection socket 20 and the plug 2 are plugged with each other, the first sealing ring 112 is compressed between the plug mounting part 11 and the electric connection socket 20, sealing between the housing 1 and the electric connection socket 20 is realized through the first sealing ring 112, meanwhile, floating type electric connection between the housing 1 and the electric connection socket 20 can be realized through the first sealing ring 112, and stability of electric connection between the electric connection plug 10 and the electric connector socket 2 is further ensured.

The cable mounting portion 12 has a second sealing ring 122 for sealing connection between the cable insertion port 3 and the cable 30. The cable 30 is connected with the flexible conductive member 4, the second sealing ring 122 is compressed between the cable installation portion 12 and the cable 30, the second sealing ring 122 seals between the housing 1 and the cable 30, and meanwhile, the second sealing ring 122 can realize floating type electrical connection between the housing 1 and the cable 30, so that the stability of the electrical connection between the electrical connection plug 10 and the cable 30 is further ensured.

The outer surface of the plug mounting part 11 is provided with at least one first mounting lug 113 connected with the electric connection socket 20, the electric connection socket 20 is provided with at least one mounting hole 201 corresponding to the first mounting lug 113, the casing 1 is connected with the electric connection socket 20 through the first mounting lug 113 and the mounting hole 201, the connection strength between the casing 1 and the electric connection socket 20 is greatly enhanced, the separation phenomenon between the plug 2 and the electric connection socket 20 is effectively avoided, and the safety and stability of the electric connection between the electric connection plug 10 and the electric connection socket 20 are greatly improved.

The outer surface of the cable installation portion 12 is provided with at least one second installation ear 123 connected to the electric vehicle. The housing 1 is connected to the electric vehicle through the second mounting lug 123, so that the electrical connection plug 10 is fixed, the offset and dislocation of the electrical connection plug 10 is effectively avoided, and the stability and reliability of the electrical connection device are greatly improved. Specifically, the housing 1 is connected to a quick-change bracket on the electric vehicle through the second mounting lug 123.

The plug mounting portion 11 and the cable mounting portion 12 have second ribs 14 therebetween. Specifically, the second reinforcing rib 14 is connected to the plug mounting portion 11, the cable mounting portion 12 and the first connecting portion 13 and is integrally formed, so that the structural strength of the housing 1 can be effectively enhanced through the second reinforcing rib 14, the stability and reliability of the electrical connection plug 10 are improved, and the service life of the electrical connection plug 10 is prolonged.

As shown in fig. 3, 4 and 5, the electrical connection plug 10 includes a cover plate 5, a first mounting opening 15 is opened on a side of the housing 1 away from the vehicle-end electrical connector, and the cover plate 5 is connected to the housing 1 and completely covers the first mounting opening 15. In the installation and connection of the electrical connection plug 10, the cable 30 extends into the cable cavity 121, the third connection portion 43 of the flexible conductive member 4 is connected to the cable 30 through the first installation opening 15, the second connection portion 41 of the flexible conductive member 4 is connected to the plug 2, the flexible conductive member 4 is then inserted through the first installation opening 15 and disposed in the channel 131, and finally the cover 5 is connected to the housing 1 to completely cover the first installation opening 15. The installation and connection of the electric connection plug 10 through the first installation opening 15 are very convenient. Meanwhile, the first mounting port 15 is covered by the cover plate 5, so that the internal structure of the electric connection plug 10, such as the covering protection of the flexible conductive piece 4 and the plug connector 2, is realized, and the stability and reliability of the electric connection device are improved.

A third seal ring 51 is pressed between the housing 1 and the cover plate 5. The third sealing ring 51 is pressed between the casing 1 and the cover plate 5, so that the sealing performance between the casing 1 and the cover plate 5 is effectively enhanced, and the safety and reliability are greatly improved.

The electrical connector plug 10 includes an insulating sheath 6, the insulating sheath 6 is located in the housing 1, and the insulating sheath 6 covers the plug 2 and at least a portion of the cable 30. In this embodiment, as shown in fig. 3, the insulating sleeve 6 is located in the housing 1 and covers the flexible conductive member 4, the plug 2 and at least a part of the cable 30, the insulating sleeve 6 protects the flexible conductive member 4, the plug 2, the electrical connection socket 20 and the cable 30, and has good insulating and sealing effects on the electrical connection plug 10, the electrical connection socket 20 and the cable 30, so that the problem of unstable electrical connection can be effectively solved, and the safety of the electrical connection device is greatly improved.

As shown in fig. 3, 7, 8 and 9, the insulating sleeve 6 includes a sleeve body 61 and an insulating sheet 62, the sleeve body 61 is sleeved on the plug 2 and at least a portion of the cable 30, a second mounting opening 611 is opened on a side of the sleeve body 61 facing the first mounting opening 15, and the insulating sheet 62 is disposed in the housing 1 through the first mounting opening 15 and completely covers the second mounting opening 611.

Specifically, one side of the insulating sheet 62 facing the sleeve body 61 has a step portion 621, and the step portion 621 and the second mounting port 611 are mutually matched, clamped and connected, so that the sealing performance between the sleeve body 61 and the insulating sheet 62 is effectively enhanced. Of course, the connection between the sleeve body 61 and the insulating sheet 62 is not limited to snap connection, and other connection methods such as crimping and bonding may be used.

When the electrical connection plug 10 is installed and connected, the cable 30 extends into the sleeve body 61, the third connecting portion 43 of the flexible conductive member 4 is connected with the cable 30 through the first installation opening 15 and the second installation opening 611, the second connecting portion 41 of the flexible conductive member 4 is connected with the plug 2, then the flexible conductive member 4 passes through the first installation opening 15 and the second installation opening 611 and is arranged in the sleeve body 61, the insulating sheet 62 completely covers the second installation opening 611, and finally the cover plate 5 is connected with the housing 1 so as to completely cover the first installation opening 15. The electrical connection plug 10 can be conveniently mounted and connected through the first mounting hole 15 and the second mounting hole 611. Meanwhile, the second mounting port 611 is covered by the insulating sheet 62, so that the flexible conductive piece 4, the plug connector 2 and at least part of the cable 30 are insulated and protected, and the safety of the electric connection device is greatly improved.

As shown in fig. 7 and 8, the entire sleeve body 61 has a C-shaped bent structure, and the sleeve body 61 is to be disposed in the housing 1. The sleeve body 61 comprises a middle portion 619 and two end portions 618, the two end portions 618 are respectively connected to the two end portions 619, and the two end portions 618 are respectively inserted into the plug cavity 111 and the cable cavity 121 of the housing 1.

The sleeve body 61 is provided with the reinforcing ribs, the self structural strength of the sleeve body 61 can be effectively enhanced through the reinforcing ribs, and the stability is higher. The flexible part 42 is positioned in the middle part 619 and is flat, and the reinforcing rib is arranged in the middle part 619 and is used for pressing and abutting against the flexible conductive piece 4, so that the phenomenon that the flexible conductive piece 4 moves in the insulating sleeve 6 is effectively avoided, and the stability of electric connection is ensured; meanwhile, the space in the plug cavity 111 and the cable cavity 121 is not occupied, and the structure is more compact.

As shown in fig. 9, one side of the insulating sheet 62 facing the cable cavity 121 has a pressing portion 622 protruding outward, and the pressing portion 622 extends into the channel 131 and/or the cable cavity 121, so that the pressing portion 622 abuts against the flexible conductive member 4 located in the sleeve body 61, and the flexible conductive member 4 abuts against and is fixed, thereby effectively avoiding the flexible conductive member 4 from generating an offset and dislocation phenomenon in the insulating sleeve 6, and ensuring the stability of electrical connection. The pressing portion 622 is tightly abutted against the inner wall surface of the sleeve body 61, so that the connection stability between the sleeve body 61 and the insulation sheet 62 is further enhanced.

One side of insulating piece 62 towards plug cavity 111 has inside sunken groove 623 of dodging, and bayonet joint 2 and flexible conductive piece 4 interconnect and lie in insulating cover 6, can realize that the link position of bayonet joint 2 and flexible conductive piece 4 is in dodging groove 623 through the dodging space of dodging groove 623, has effectively avoided insulating piece 62 to take place the interference phenomenon. Of course, in other embodiments, the side of the insulation sheet 62 facing the sleeve body 61 is outwardly extended or inwardly recessed, and the insulation sheet may be designed accordingly according to the requirement of the internal space, and the specific structure may not be limited.

Have on the insulating piece 62 and strengthen a muscle 624, can effectively strengthen insulating piece 62's self structural strength through strengthening a muscle 624, stability is higher. The reinforcing bar 624 is pressed against the flexible conductive member 4, so that the flexible conductive member 4 is effectively prevented from moving in the insulating sleeve 6, and the stability of electrical connection is ensured.

As shown in fig. 3, 7 and 8, one end of the sleeve body 61, which is sleeved on the plug 2, has a sleeve portion 612 and a closing portion 613, the plug 2 is located in the sleeve portion 612, and the closing portion 613 is connected to an end of the sleeve portion 612. The inner diameter of the closing portion 613 is smaller than the inner diameter of the sleeve portion 612, so as to form a limiting surface at the end of the closing portion 613 connected to the sleeve portion 612, one end of the plug 2 abuts against the limiting surface to prevent the plug 2 from being separated from the sleeve portion 612, and the electrical connection socket 20 passes through the closing portion 613 and is inserted into the plug 2. The plug connector 2 is arranged in the sleeve setting part 612, the plug connector 2 is limited to be separated from the sleeve body 61 through the closing part 613, two ends of the plug connector 2 are respectively abutted against the closing part 613 and the insulating sheet 62, the phenomenon of offset and dislocation of the plug connector 2 is effectively avoided, and the stability of electric connection between the plug connector 2 and the flexible conductive piece 4 and the electric connection socket 20 is further improved. Meanwhile, the insulating sleeve 6 always performs an insulating protection function with the plug connector 2, and the safety of the electric connection device is greatly improved. Specifically, one end of the plug connector 2 abuts against the limiting surface of the closing-in portion 613, the other end of the plug connector 2 (i.e., the connecting end portion of the flexible conductive member 4) abuts against the avoiding groove 623 of the insulating sheet 62, the pressing portion 622 of the insulating sheet 62 abuts against the flexible conductive member 4, the plug connector 2 and the flexible conductive member 4 are abutted against and limited by the sleeve body 61 and the insulating sheet 62, the phenomenon that the plug connector 2 and the flexible conductive member 4 deviate and dislocate in the insulating sleeve 6 is effectively avoided, and the stability of electrical connection is guaranteed.

The sleeve body 61 is provided with a pin 614 at one end sleeved on the plug connector 2, and the pin 614 is disposed on the outer surface of the sleeve portion 612 and is used for being plugged into the jack of the electrical connection socket 20. When the electrical connector 10 and the electrical connector 20 are plugged into each other, the pins 614 are inserted into the holes of the electrical connector 20, and the pins 614 are connected with the low voltage signal.

By setting the length and position difference between the contact pin 614 and the high-voltage plug connector 2, when connection is realized, the plug connector 2 is connected first, then the contact pin 614 is connected, and the contact pin 614 is electrified after being conducted; when the plug is disconnected, the contact pin 614 is disconnected firstly, then the plug connector 2 is disconnected, the contact pin 614 plays a role in high-voltage interlocking, hot plugging of the electric connection plug 10 is avoided, safety accidents caused by burning and manual misoperation are prevented, and safety is high. On one hand, when a high-voltage system loop is disconnected or the integrity is damaged, a protective measure for safely disconnecting the high-voltage electricity is started; and on the other hand to confirm the integrity of the entire high voltage system. The integrity and continuity of the electrical connection of each high voltage system loop is tested by using the low voltage signal to inspect all components on the electric vehicle that are connected to the high voltage wiring harness. In the working process of a high-voltage system, if no high-voltage interlocking design exists, a high-voltage connection point is manually disconnected, the voltage of the whole loop is applied to two ends of the breakpoint at the moment of disconnection, the voltage breaks through air to discharge an arc between two devices, and even if the time is short, the energy is very high, and people and equipment around the breakpoint can be damaged.

One end of the sleeve body 61, which is sleeved on the plug connector 2, has a first guiding portion 616, and the first guiding portion 616 extends along the plugging direction of the plug connector 2 and is located on the outer surface of the sleeve portion 612. The first guiding portion 616 has a guiding function, so that the electrical connection plug 10 can play a guiding function in being plugged into the electrical connection socket 20, and accurate plugging of the plug 2 is ensured. Meanwhile, the first guide portion 616 plays a role in pre-guiding the insertion of the contact pin 614, so that the precise insertion of the contact pin 614 is ensured, and the insertion reliability is ensured. The first guiding portion 616 protrudes outward from the outer surface of the sleeve portion 612, so that the overall structural strength of the first guiding portion 616 is high, and the pins 614 are disposed in the first guiding portion 616 toward the end of the electrical connection socket 20.

The sleeve body 61 has a second guiding portion 617 at an end thereof sleeved on the plug 2, and the second guiding portion 617 extends along the plugging direction of the plug 2 and is located on the outer surface of the receiving portion 613. The second guiding portion 617 plays a pre-guiding role in the plugging of the pin 614, so that the precise plugging of the pin 614 is ensured, and the plugging reliability is ensured. The second guiding portion 617 extends outward from the outer surface of the sleeve portion 612 to form a guiding groove structure, and the pin 614 is disposed at the bottom of the guiding groove structure to ensure the reliability of the insertion.

In this embodiment, as shown in fig. 8, an outer diameter of the receiving portion 613 is smaller than an outer diameter of the sleeve portion 612, the second guiding portion 617 is connected to the first guiding portion 616, a guiding groove structure of the second guiding portion 617 extends to the first guiding portion 616, a groove bottom of the guiding groove structure is an end portion of the first guiding portion 616, and the pin 614 is disposed at the groove bottom of the guiding groove structure. A plurality of guiding limiting portions 615 are disposed between the sleeve portion 612 and the closing portion 613, and the guiding limiting portions 615 extend from the outer surface of the closing portion 613 to the sleeve portion 612 along an oblique direction. The guiding limiting parts 615 have a guiding function, the connecting holes of the electrical connection socket 20 are firstly sleeved on the closing part 613, and along with the movement of the electrical connection plug 10 along the plugging direction close to the electrical connection socket 20, the connecting holes of the electrical connection socket 20 are guided to be sleeved on the sleeving parts 612 through the guiding limiting parts 615, so that the plug connector 2 and the electrical connection socket 20 are accurately plugged with each other; meanwhile, the guiding limiting part 615 has a reinforcing effect, so that the connection strength between the closing part 613 and the sleeving part 612 is effectively enhanced, and the stability of the electric connection device is improved.

The inside of cable installation department 12 is provided with shielding ring 7, and shielding ring 7 and the inner wall butt of cable installation department 12, shielding ring 7 cover are established on cable 30 and are leaned on with insulating cover 6 laminating each other to carry out the cladding protection to cable 30. Specifically, the shield ring 7 is disposed at one end of the sleeve body 61 sleeved on the cable 30.

As shown in fig. 3 and 4, an end cover 8 is disposed at an end of the cable installation portion 12, one end of the end cover 8 is sleeved on the cable installation portion 12, and the other end of the end cover 8 is sleeved on the cable 30 to fix the cable 30 on the cable installation portion 12. The end cover 8 is sleeved on the cable 30 and connected with the shell 1, the shielding ring 7 is fixed in the cable cavity 121 through the end cover 8 to limit the shielding ring 7 and the cable 30 to be separated from the cable cavity 121, so that the cable 30 is fixed on the cable installation part 12, the connection is stable and reliable, and the installation and the connection are convenient.

The end cap 8 includes a fastening portion 81 and a sleeving portion 82 connected to each other, the fastening portion 81 is sleeved on the cable installation portion 12, and the sleeving portion 82 is sleeved on the cable 30. Specifically, the outer surface of the cable mounting portion 12 is provided with a snap bump 124, the snap portion 81 is provided with a snap groove, and the snap bump 124 is snap-connected in the snap groove. The buckling parts 81 are of a plurality of sheet structures, and the sheet structures are arranged at intervals, so that the sheet structures have elasticity and are convenient to mount and dismount. The sleeving part 82 is sleeved on the cable 30 and is in clearance fit with the cable 30, and the second sealing ring 122 is pressed between the end cover 8 and the cable installation part 12 and is tightly pressed against the outer surface of the cable 30, so that the cable 30 is pre-guided and limited, and the cable 30 is prevented from being bent at the end part of the cable installation part 12; meanwhile, the cable 30 has an outward pre-tightening force (a rebound force) to cooperate with the end cap 8, so as to prevent the buckling part 81 from falling off. A plurality of reinforcing parts are arranged between the sleeve-joint part 82 and the buckling part 81, the reinforcing parts extend to the buckling part 81 along the inclined direction from the outer surface of the sleeve-joint part 82, the connection strength between the sleeve-joint part 82 and the buckling part 81 is effectively enhanced, and the stability of the electric connection device is improved.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. An electric connection plug is arranged on an electric automobile and used for being plugged in an electric connection socket of an electric connector at the automobile end, and is characterized in that the electric connection plug comprises a shell, a plug and a cable plugging port, the plug and the cable plugging port are arranged at two ends of the shell, the plug is used for being connected with a cable and plugged in the electric connection socket, the cable plugging port is used for plugging the cable, and the opening direction of the cable plugging port is consistent with the plugging direction of the plug.

2. The electrical connection plug of claim 1, wherein the plug connector is disposed in the housing for insertion connection with the electrical connection receptacle.

3. The electrical connection plug of claim 2, wherein the housing includes a plug mounting portion and a cable mounting portion, the plug mounting portion and the cable mounting portion extend in the same direction, the plug mounting portion and the cable mounting portion are respectively provided therein with a plug cavity and a cable cavity, the cable plugging port is provided at an end portion of the cable mounting portion and communicates with the cable cavity, the plug is provided in the plug cavity, and the cable is plugged in the cable cavity.

4. The electrical connection plug of claim 3, wherein the housing includes a first connection portion connecting the plug mounting portion and the cable mounting portion, the first connection portion having a channel therein, the channel communicating the cable cavity and the plug cavity.

5. The electrical connection plug of claim 3, wherein the plug mounting portion has a first sealing ring for sealing engagement with the electrical connection socket;

6. The electrical connection plug of claim 3, wherein the plug mounting portion has an outer surface provided with at least one first mounting ear for connection to the electrical connection jack;

and/or the outer surface of the cable installation part is provided with at least one second installation lug connected with the electric automobile.

7. The electrical connection plug of claim 3, wherein an end cap is disposed at an end of the cable mounting portion, one end of the end cap is sleeved on the cable mounting portion, and the other end of the end cap is sleeved on the cable to fix the cable to the cable jack.

8. The electrical connection plug of claim 1, wherein the electrical connection plug comprises a cover plate, wherein a first mounting opening is formed in a side of the housing remote from the vehicle-end electrical connector, and wherein the cover plate is connected to the housing and completely covers the first mounting opening.

9. The electrical connection plug of claim 8, wherein the electrical connection plug comprises an insulating sleeve positioned within the housing and surrounding the plug and at least a portion of the cable.

10. The electrical connection plug of claim 9, wherein the insulating sleeve includes a sleeve body and an insulating sheet, the sleeve body is sleeved on the plug and at least a portion of the cable, a second mounting opening is opened on a side of the sleeve body facing the first mounting opening, and the insulating sheet is disposed in the housing through the first mounting opening and completely covers the second mounting opening.

11. The electrical connection plug of claim 10, wherein the sleeve body has a sleeve portion and a closing portion at an end thereof sleeved on the plug, the plug is located in the sleeve portion, and the closing portion is connected to an end of the sleeve portion.

12. The electrical connection plug of claim 11, wherein an inner diameter of the mouth-in portion is smaller than an inner diameter of the sleeve portion, the mouth-in portion abuts against the plug to retain the plug within the sleeve portion, and the electrical connection socket passes through the mouth-in portion and is inserted into the plug.

13. The electrical connection plug as claimed in claim 11, wherein the sleeve body has a pin at an end thereof sleeved on the plug, and the pin is disposed on an outer surface of the sleeve portion and is adapted to be inserted into the insertion hole of the electrical connection socket.

14. The electrical connection plug of claim 11, wherein an outer diameter of the receiving portion is smaller than an outer diameter of the engaging portion, and a plurality of guiding and limiting portions are disposed between the engaging portion and the receiving portion, and extend from an outer surface of the receiving portion to the engaging portion in an oblique direction.

15. The electrical connection plug of claim 1, further comprising a flexible electrically conductive member disposed within the housing for connecting the plug to the cable.

16. The electrical connection plug of claim 15, wherein the flexible conductive member includes a second connection portion, a flexible portion and a third connection portion connected in series, the plug is connected to the second connection portion, and the cable is connected to the third connection portion.

17. The electrical connection plug of claim 16, wherein the second connection portion and the plug are crimped, riveted, or bolted to each other;

and/or the third connecting part and the cable are mutually crimped, riveted or bolted.

18. The electrical connection plug of claim 16, wherein the flexible portion is made of a flexible conductive material.

19. An electrical connection device comprising an electrical connection receptacle and an electrical connection plug as claimed in any one of claims 1 to 18.

20. The electrical connection device of claim 19, wherein the electrical connection socket has at least one mounting hole therein for connection to the electrical connection plug.

21. An electric vehicle, characterized in that it comprises an electric connection device according to claim 19 or 20.