CN219163738U

CN219163738U - Discharge gun assembly

Info

Publication number: CN219163738U
Application number: CN202223535244.9U
Authority: CN
Inventors: 王超
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-09
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a discharge gun assembly, including discharge plug, set up in at least one terminal in the discharge plug, with the cable of terminal electricity connection, and with the socket of cable electricity connection, the terminal is used for being connected with car end power supply unit electricity, the socket is used for being connected with outside electrical apparatus electricity, wherein, the terminal is stamping forming structure. According to the discharging gun assembly, when the discharging plug is connected with an interface (discharging vehicle socket) of a vehicle-end power supply device such as an alternating current vehicle-mounted discharging machine, the discharging process of the vehicle-end alternating current to a load can be realized, and the terminal is subjected to stamping forming, so that the terminal can be guaranteed to have good surface quality and accurate size, the utilization rate of formed raw materials is high, and the stamping die has long service life and low cost.

Description

Discharge gun assembly

Technical Field

The utility model relates to the technical field of automobile charging and discharging, in particular to a discharging gun assembly.

Background

The electric appliances on the market generally need to be connected to the power grid to supply power by the power grid, but once emergency situations such as power shortage, power outage and the like occur in the power grid, the electric appliances cannot be used.

As a movable distributed energy storage device, electric vehicles have considerable stored electric energy due to the large number. Therefore, the electric energy in the electric automobile in the idle state is effectively utilized, and the problem that the automobile discharges to the load is needed to be solved at present.

In addition, since the cable of the electric automobile has high voltage and large current, the current is conducted by using a wire with a large wire diameter, and the current charge and discharge gun terminals are formed by integrally machining a copper material. The charging system has the defects of high cost, long processing time, integral replacement only when a problem occurs, and adverse control on the cost of the charging system.

Disclosure of Invention

It is an object of the present utility model to provide a discharge gun assembly for achieving a direct discharge of a load from a vehicle end while reducing the manufacturing costs of the discharge gun assembly.

The utility model provides a discharge gun assembly, include discharge plug, set up in at least one terminal in the discharge plug, with at least one the cable of terminal electricity connection, and with the socket of cable electricity connection, the terminal is used for being connected with car end power supply unit electricity, the socket is used for being connected with outside electrical apparatus electricity, wherein, the terminal is stamping forming structure.

Preferably, the terminal comprises a contact part, a limiting part and a connecting part which are sequentially arranged, wherein the contact part is used for being electrically connected with the vehicle-end power supply device, the connecting part is used for being electrically connected with the cable, and the contact part, the limiting part and the connecting part are integrally formed by stamping.

Preferably, the contact portion is formed into a first cylindrical body, the connection portion is formed into a second cylindrical body, the maximum diameter of the second cylindrical body is larger than that of the first cylindrical body, and a step portion is formed at the connection portion of the first cylindrical body and the second cylindrical body.

Preferably, the limiting part comprises at least two annular ribs protruding radially from the outer surface of the first cylinder, and the annular ribs are arranged at intervals along the axial direction of the first cylinder.

Preferably, a sealing ring is arranged between adjacent annular ribs.

Preferably, a space is formed between the annular rib closest to the step portion and the step portion of the at least two annular ribs.

Preferably, the annular rib farthest from the step portion of the at least two annular ribs is for abutting with a butt end of the vehicle-end power supply device.

Preferably, the maximum diameter of the first cylinder is 1.8mm-8.5mm, and/or the maximum diameter of the second cylinder is 3.4mm-6.2mm.

Preferably, the wall thickness of the first cylinder is 0.235mm-0.512mm and/or the wall thickness of the second cylinder is 0.435mm-0.756mm.

Preferably, at least one of the terminals includes a charging terminal and a signal terminal, the charging terminal having a size larger than a size of the signal terminal.

According to the discharge gun assembly disclosed by the utility model, the following beneficial effects are brought:

1. when the discharging plug is connected with an interface (discharging vehicle socket) of a vehicle-end power supply device such as an alternating current vehicle-mounted discharging machine, the discharging process of the vehicle-end alternating current to the load can be realized by carrying out connection confirmation of an alternating current V2L charging and discharging connection device and judgment of rated current parameters through a discharging control guide circuit of an alternating current V2L mode disclosed by GBT 18487.4-2021.

2. The contact part, the limiting part and the connecting part of the terminal are integrally formed by stamping, so that the terminal does not need to be integrally machined, the machining time is saved, and the material is saved.

3. The terminal processed by the stamping mode has simple processing mode and low working time, and can keep the conductive property and the elastic property of the material.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a perspective exploded view of a discharge gun assembly according to a preferred embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a discharge plug in the discharge gun assembly;

fig. 3 is a perspective view of the terminal of fig. 1.

The figures are marked as follows:

1-a handle; 2-a first housing; 3-an elastic member; 4-butting a cavity; 5-a plug body; 6-terminal; 7-a fastener; 8-a stopper; 9-a second housing; 10-a cable; 11-a socket; 12-a micro switch; 13-a first arm; 14-arc arms; 15-a second arm; 16-sealing rings; 61-contact; 62-connecting part; 63-annular ribs; 64-step; 65-compartment; 601-a charging terminal; 602-signal terminals.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

As shown in fig. 1 and 2, there is provided a discharge gun assembly including a discharge plug, at least one terminal 6 provided in the discharge plug, a cable 10 electrically connected to the terminal 6, and a socket 11 electrically connected to the cable 10, the terminal 6 being for electrical connection with a vehicle-end power supply device, the socket 11 being for electrical connection with an external electric appliance, wherein the terminal 6 is of a press-formed structure.

Thus, when the discharging plug is connected with an interface (discharging vehicle socket) of a vehicle-end power supply device such as an alternating-current vehicle-mounted discharging machine, the discharging process of the vehicle-end alternating current to a load can be realized; meanwhile, the terminal processed by adopting the stamping mode has simple processing mode and low working time, can keep the conductive property and the elastic property of the material, and can also reduce the processing and manufacturing cost of the discharge gun assembly.

Specifically, as shown in fig. 3, at least one terminal 6 includes a charging terminal 601 and a signal terminal 602, and the size of the charging terminal 601 is larger than the size of the signal terminal 602.

More specifically, the charging terminal 601 may include: PE terminal, L terminal, N terminal. The signal terminals 602 may include a CC signal (connection confirm) terminal and a CP signal (control pilot function) terminal.

The CC signal is a connection confirmation signal during vehicle-mounted charging, and the type of the gun is determined by detecting a voltage condition of the CC signal, that is, whether the charging gun or the discharging gun is a charging gun or a discharging gun, and whether the charging gun or the discharging gun is already inserted. And the gun head in the CC signal is also provided with an RC resistor, the RC resistor reflects the capacity of the gun cable, the thicknesses of the cables are different from each other, and the maximum current which can be born by the cable needs to be judged at the same time.

The CP signal is collectively referred to as a control guidance function signal (control pilot function), which is mainly used for monitoring the function of interaction between an electric vehicle and an electric vehicle power supply device (charging pile)/external electric equipment (load). The CP signal is specifically a handshake signal between the car and the charging stake/external load, a communication mode using PWM modulation and amplitude alternation.

Next, a specific structure of the terminal 6 will be described in detail with reference to fig. 1 and 3. Since the charging terminal 601 and the signal terminal 602 each include the contact portion 61, the stopper portion, and the connecting portion 62, the naming of the contact portions and the like is not differentiated when describing the related structure.

As shown in fig. 3, the terminal includes a contact portion 61, a limit portion, and a connection portion 62, which are sequentially provided, the contact portion 61 is used for electrically connecting with a vehicle-end power supply device (for example, an ac vehicle-mounted discharge machine), the connection portion 62 is used for electrically connecting with a cable, and the contact portion 61, the limit portion, and the connection portion 62 are integrally press-molded.

As shown in fig. 3, the contact portion 61 is formed as a first cylindrical body, the connection portion 62 is formed as a second cylindrical body, and the maximum diameter of the second cylindrical body is larger than that of the first cylindrical body, and a step portion 64 is formed at the connection portion of the first cylindrical body and the second cylindrical body.

More specifically, in some embodiments, the maximum diameter of the first cylinder is 1.8mm-8.5mm, and/or the maximum diameter of the second cylinder is 3.4mm-6.2mm.

The terminals 6 herein may include a charging terminal 601 and a signal terminal 602 in particular. Thus, more specifically, it will be appreciated that in some embodiments, the maximum diameter of the first barrel of the charging terminal 601 may be 3.6mm-8.5mm. Preferably, in the present embodiment, the maximum diameter of the first cylindrical body of the charging terminal 601 is 3.96mm.

Similarly, in some embodiments, the maximum diameter of the second barrel of the charging terminal 601 may be 4.8mm-6.2mm. Preferably, in the present embodiment, the maximum diameter of the second cylindrical body of the charging terminal 601 is 5.95mm.

Similarly, in some embodiments, the maximum diameter of the first barrel of the signal terminal 602 may be 1.8mm-3.4mm. Preferably, in the present embodiment, the maximum diameter of the first cylindrical body of the signal terminal 602 is 2.48mm.

Similarly, in some embodiments, the maximum diameter of the second barrel of the signal terminal 602 may be 3.4mm-4.2mm. Preferably, in the present embodiment, the maximum diameter of the second cylindrical body of the signal terminal 602 is 3.57mm.

It will be appreciated that the dimensions of the cylinders of the charging terminals 601 and the signal terminals 602 may be set according to actual requirements (e.g., butt terminal dimensions), and the specific values of the dimensions are not limited herein.

In some embodiments, the wall thickness of the first cartridge is 0.235mm-0.512mm and/or the wall thickness of the second cartridge is 0.435mm-0.756mm. It will be appreciated that when the thickness is less than 0.235mm, the elasticity of the terminal is insufficient, and when the thickness is more than 0.756mm, the difficulty of deformation increases, and the processing is more difficult, which is not significant for practical production.

It will be appreciated that the dimensions of the wall thicknesses of the charging terminal 601 and the signal terminal 602 may be set according to actual requirements, and the specific values of the dimensions are not limited herein. In general, the wall thickness of the second cylindrical body may be set to be larger than that of the first cylindrical body.

With continued reference to fig. 3, the terminal 6 stopper includes at least two annular ribs 63 protruding radially from the outer surface of the first cylindrical body, the annular ribs 63 being disposed at intervals along the axial direction of the first cylindrical body.

More specifically, the seal ring 16 is provided between the adjacent annular ribs 63. Thus, when the terminal is positioned in the mating cavity, sealability can be ensured.

Wherein a space 65 is formed between the annular rib 63 closest to the step 64 and the step 64 of the at least two annular ribs 63. The terminals may be positioned into the mating cavity through the spacer cavity 65.

The annular rib 63 farthest from the step 64 of the at least two annular ribs 63 is for abutting with the abutting end of the vehicle-end power supply device. It will be appreciated that the length dimension from the mating end of the contact portion 61 of the terminal to the abutment surface of the annular rib 63 is dependent upon the depth of the terminal receptacle body in the mating end of the vehicle end power unit to ensure that the aperture edge of the receptacle body abuts the abutment surface of the annular rib 63 after the contact portion 61 of the terminal is inserted into the receptacle body. Thereby, the stability of the electrical connection between the terminals is ensured.

In some embodiments, as shown in fig. 3, the end of the connection portion 62 of the charging terminal 601 may have a truncated cone shape or a spherical shape according to actual needs. The diameter of the second cylindrical body of the signal terminal 602 may also be changed stepwise according to actual needs, so as to better ensure stability of signal transmission.

Referring back to fig. 1, as shown in fig. 1, the discharge plug includes a mating cavity 4, the ends of terminals 6 are positioned and mounted into the mating cavity 4, and the tail portions of the terminals are crimped or soldered to the cable 10. Therefore, the terminal 6 is arranged in the butt joint cavity 4, so that the terminal 6 can be prevented from being excessively exposed to the outside, and the terminal 6 is protected.

Further, the discharging plug further comprises a plug body 5, and the plug body 5 is coated with the butt-joint cavity 4, the plurality of terminals 6 and the cable 10 to be integrally injection molded into a single integral part.

Therefore, the tightness of the discharge gun assembly is ensured, and the weight of the discharge gun assembly is improved.

Further, the discharge gun assembly further comprises a first shell 2 and a second shell 9 which cover the plug body 5, and the first shell 2 is detachably connected with the second shell 9. Thereby facilitating assembly of the plug portions of the discharge gun assembly together.

Specifically, the first housing 2 and the second housing 9 may be detachably connected by the fastener 7. The fastener 7 may be a screw.

Further, the discharging gun assembly further comprises a dust cover and a handle 1, the dust cover is connected with the handle 1 through an elastic body, the handle 1 wraps the tail end of the cable 10 and is arranged between the first shell 2 and the second shell 9, and the dust cover detachably covers the butt joint cavity 4. Thereby, external impurities and the like can be prevented from entering the docking chamber 4.

Further, as shown in fig. 2, a stop member 8 and a micro switch 12 are further disposed between the first housing 2 and the second housing 9, the stop member 8 is connected with the discharge plug through at least one fixing pin, the micro switch is connected with an elastic sheet, one end of the stop member 8 is jacked up in the process that the docking end of the vehicle end power supply device is inserted into the docking cavity 4, and the other end of the stop member 8 moves downwards to drive the elastic sheet to trigger the micro switch.

Specifically, the stopper 8 includes a first arm 13 extending toward the abutting end of the vehicle end power supply device, an arc-shaped arm 14 extending from the tip end of the first arm 13, and a second arm 15 continuing from the tip end of the arc-shaped arm 14, the extending direction of the first arm 13 being different from the extending direction of the second arm 15.

Therefore, in the process of inserting the butt end into the butt cavity 4, the first arm 13 is jacked up, and the arc-shaped arm 14 can be driven to be pressed down and trigger the micro switch 12.

It will also be appreciated that during the insertion of the docking end into the docking cavity 4, the first arm 13 is lifted upwards, being the resilient tab of the curved arm 14 with the curved apex of the microswitch 12.

More specifically, the arc-shaped arm 14 is recessed toward the inner space of the plug body 5.

As shown in fig. 2, in the space formed by the first housing 2 and the second housing 9, the space formed by the recess of the arc-shaped arm 14 is provided with a fixing pin, and at the same time, the fixing pin is also provided below the first arm 13, whereby the stopper 8 can be fixed in a limited position.

Further, an elastic member 3 is further provided between the first housing 2 and the second housing 9, the elastic member 3 being configured to be compressed during insertion of the docking end into the docking cavity 4, and to resume deformation after insertion of the docking end into place to return the stopper 8 to an initial state. It will be appreciated that fig. 2 is an illustration of the stopper 8 in an initial state.

Therefore, in the process of inserting the butt end into the butt cavity 4, the first arm 13 is jacked up, so that the second arm 15 can more easily press the elastic piece 3 downwards, the elastic piece 3 is elastically deformed as much as possible, and the resetting of the stop piece 8 is further facilitated in the process of recovering the deformation of the elastic piece 3.

The installation process of the discharge gun assembly provided herein is as follows:

s1: the terminal 6 is connected with the cable 10, an insulating layer is removed from one end of the cable 10, and the terminal 6 is connected with the cable 10, and crimping, welding or a mode of crimping and welding combination can be used;

s2: the terminal 6 is installed, the terminal 6 is inserted into the corresponding hole of the butt joint cavity 4, and the terminal 6 can be clamped in the hole by using the back-off buckle on the terminal 6 to prevent falling off;

s3: connecting the micro switch 12 with the outside through a wire;

s4: placing the connected terminals 6, the cables 10 and the butting cavity 4 into corresponding moulds, and performing injection molding to form a plug body 5; injection molding is carried out by using PA66 plus 25 percent GF material, the mold temperature is between 60 and 95 ℃, the injection molding temperature is between 250 and 275 ℃, the injection molding pressure is between 120 and 200MPa, the back pressure is between 0.17 and 0.35MPa, the screw rotating speed is between 30 and 60rpm, the molding period is 65S, and the injection molding time is between 8 and 12S;

s5: cooling, namely cooling the plug body 5 formed by injection molding of S4 by more than 4H, and fully cooling the plug body;

s6: the positioning piece 8, the micro switch 12, the first shell 2, the second shell 9 and the elastic piece 3 are arranged, the positioning piece 8 is arranged at the corresponding positions in the two shells, the elastic piece 3 is arranged below the right end of the positioning piece 8 and is connected through a fixing pin, and meanwhile, the micro switch 12 can be triggered when the positioning piece 8 is pressed down;

s7: placing the injection molded plug body 5 into a mold for injection molding the wrapping layer, performing injection molding processing of the wrapping layer on the surface and the tail part (namely, forming a handle and a dust cover) of the plug body 5 by using TPU materials, wherein the mold temperature is between 30 and 60 ℃, the injection molding temperature is between 170 and 230 ℃, the injection molding pressure is between 50 and 110MPa, the back pressure is between 0.15 and 0.25MPa, the screw rotating speed is between 20 and 40rpm, the molding period is 43S, and the injection molding time is between 5 and 8S;

s8: the discharge plugs completed in S1-S7 are connected to the socket 11 through the cable 10.

The said method can raise the strength of the discharge plug greatly and has excellent waterproof and sealing performance.

According to the discharging gun assembly, when the discharging plug is connected with an interface (discharging vehicle socket) of a vehicle-end power supply device such as an alternating current vehicle-mounted discharging machine, connection confirmation and rated current parameter judgment of an alternating current V2L charging and discharging connecting device are carried out through a discharging control guide circuit of an alternating current V2L mode disclosed by GBT18487.4-2021, and then a discharging process of the vehicle-end alternating current to a load can be achieved.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. The utility model provides a discharge gun assembly which characterized in that, include discharge plug, set up in at least one terminal in the discharge plug, with at least one the cable of terminal electricity connection, and with the socket of cable electricity connection, the terminal is used for being connected with car end power supply unit electricity, the socket is used for being connected with outside electrical apparatus electricity, wherein, the terminal is stamping forming structure.

2. The discharge gun assembly of claim 1, wherein the terminal includes a contact portion, a limit portion, and a connection portion that are sequentially disposed, the contact portion being configured to be electrically connected to the vehicle-end power supply, the connection portion being configured to be electrically connected to the cable, the contact portion, the limit portion, and the connection portion being integrally stamped and formed.

3. The discharge gun assembly of claim 2 wherein the contact is formed as a first cylinder and the connection is formed as a second cylinder, the maximum diameter of the second cylinder being greater than the maximum diameter of the first cylinder, the connection of the first cylinder and the second cylinder forming a step.

4. The discharge gun assembly of claim 3 wherein the first cylinder has a maximum diameter of 1.8mm-8.5mm and/or the second cylinder has a maximum diameter of 3.4mm-6.2mm.

5. The discharge gun assembly of claim 3 wherein the wall thickness of the first barrel is 0.235mm-0.512mm and/or the wall thickness of the second barrel is 0.435mm-0.756mm.

6. The discharge gun assembly as recited in claim 3 wherein the spacing portion includes at least two annular ribs projecting radially from an outer surface of the first barrel, the annular ribs being spaced apart along an axis of the first barrel.

7. The discharge gun assembly of claim 6 wherein a seal ring is disposed between adjacent ones of the annular ribs.

8. The discharge gun assembly of claim 6 wherein a spacer space is formed between the annular rib of the at least two annular ribs closest to the step and the step.

9. The discharge gun assembly of claim 6 wherein the annular rib of the at least two annular ribs furthest from the step is for abutting a butt end of the vehicle end power supply.

10. The discharge gun assembly of claim 1 wherein at least one of the terminals includes a charging terminal and a signal terminal, the charging terminal having a size greater than a size of the signal terminal.