Direct current charging socket for new energy automobile

Abstract

The utility model discloses a new energy automobile direct current charging socket with a socket body and wire harness decoupling (rapid separation) structure, which comprises a socket shell and a PCBA (Printed Circuit Board Assembly) assembly, the socket shell is provided with an access end for a charging gun to access, and the socket shell is provided with a main conductive piece; the main conductive part is electrically connected with the charging gun after the charging gun is connected to the access end, the main conductive part comprises a PE contact pin, a DC contact pin and a low-voltage contact pin, and the low-voltage contact pin is elastically and electrically connected with the PCBA assembly; the wire harness terminal shell is provided with an auxiliary conductive piece, the auxiliary conductive piece comprises a wire harness terminal, and the wire harness terminal is electrically connected with a power supply wire harness; the wire harness terminal shell is detachably connected to the tail end of the socket shell, and after connection, the tail end of a DC pin is inserted into a receiving hole in the front end of the wire harness terminal, and electric connection is realized after wall surface contact; the utility model relates to the technical field of charging piles.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and more specifically to a DC charging socket for new energy vehicles. Background Art

[0002] The charging socket is an on-board charging interface for electric vehicles that can charge the car battery. Usually, the charging socket body and the wiring harness cannot be quickly separated. This type of socket is assembled in series during production (that is, the socket and the wiring harness terminal and the electrical components carried by each are assembled into an integrated fixed structure);

[0003] During after-sales replacement, the socket and the wiring harness need to be replaced as a whole. It is impossible to quickly replace a single socket or wiring harness, which is costly and inconvenient to disassemble and assemble. Utility Model Content

[0004] In view of the shortcomings and defects of the prior art, a new energy vehicle DC charging socket with a socket body and a wiring harness decoupling (quick separation) structure is provided.

[0005] A new energy vehicle DC charging socket, comprising:

[0006] A socket shell, wherein the socket shell is provided with an access terminal for the charging gun to be connected, and the socket shell is provided with a main conductive part and a PCBA assembly, wherein the main conductive part is electrically connected to the charging gun after the charging gun is connected to the access terminal, wherein the main conductive part includes a PE pin, a DC pin, and a low-voltage pin, wherein the low-voltage pin is electrically connected to the PCBA assembly by elasticity;

[0007] A wiring harness terminal housing, wherein a secondary conductive member is disposed on the wiring harness terminal housing, wherein the secondary conductive member includes a wiring harness terminal, and the wiring harness terminal is electrically connected to a power supply wiring harness;

[0008] The wiring harness terminal housing is detachably connected to the rear end of the socket housing. After connection, the receiving hole at the front end of the wiring harness terminal is used for the rear end of the DC pin to be inserted, and the wall surface is contacted to achieve electrical connection.

[0009] After disconnection, the tail end of the DC pin is moved out of the receiving hole, and the wall is disengaged to disconnect the electrical connection.

[0010] After adopting the above structure, the DC charging socket of a new energy vehicle of the utility model has the following advantages compared with the prior art: the main conductive part is integrated on the socket terminal shell as a DC socket body assembly;

[0011] The PCBA assembly is provided with a wiring port, and external electrical components are detachably connected to the wiring port via pins.

[0012] The wiring harness terminal and the wiring harness are integrated and arranged on the wiring harness terminal housing as a DC wiring harness terminal assembly;

[0013] The wiring harness terminal housing is detachably connected to the rear end of the socket terminal housing. After the connection is completed, the receiving hole at the front end of the wiring harness terminal is used for the rear end of the DC pin to be inserted, and the wall surface is contacted to achieve electrical connection;

[0014] After disconnection, the tail end of the DC pin is moved out of the receiving hole and the wall is disengaged to disconnect the electrical connection.

[0015] After the above improvements, the DC socket body assembly and the DC harness terminal assembly can be disassembled or replaced, and have the characteristics of simple disassembly and assembly.

[0016] The effects of this application are:

[0017] 1. The DC socket body assembly and the DC harness terminal assembly can be modularized. For different vehicle models, only the DC socket body assembly or the DC harness terminal assembly needs to be replaced, which has the characteristics of simple structure and low cost.

[0018] 2. The DC socket body assembly and DC harness terminal assembly can be produced in parallel, which is conducive to automation and large-scale mass production.

[0019] 3. The two modules of the DC socket body assembly and the DC harness terminal assembly can be quickly replaced (some charging pile DC harness terminal assemblies are plugged into the charging pile body, so the DC harness terminal assembly can also be replaced separately), which is convenient for disassembly and assembly and after-sales.

[0020] As an improvement of the present utility model, the wiring harness terminal housing is provided with a accommodating hole penetrating from front to back, a card edge extending forward is provided at the front end opening of the accommodating hole, the wiring harness terminal body is placed in the accommodating hole, and the front end of the wiring harness terminal extends from the front end opening of the accommodating hole, a card slot for the card edge to be engaged is provided on the peripheral side of the wiring harness terminal, and the whole is inserted into the step hole to form a CPA structure to prevent the card edge from detaching from the card slot.

[0021] As an improvement of the present invention, the power supply harness is inserted from the rear end of the accommodating hole and is connected to the rear end of the harness terminal by welding or crimping.

[0022] As an improvement of the present invention, a first sealing member is provided between the inner wall surface of the rear end of the accommodating hole and the peripheral side of the power supply harness.

[0023] As an improvement of the utility model, a detachable pin stopper is provided at the rear end of the socket housing, and the pin stopper is located between the socket housing and the wiring harness terminal housing;

[0024] The pin stopper is provided with a stepped hole;

[0025] The tail end of the DC pin is inserted into the inner side from the front end of the step hole;

[0026] The front end of the wiring harness terminal housing extends into the inner side of the rear end of the step hole.

[0027] As an improvement of the present utility model, the front end of the DC pin is inserted into the assembly hole on the socket shell, and the rear end of the DC pin is provided with an annular flange;

[0028] The end surface of the pin stopper is arranged to abut against the end surface of the flange tail.

[0029] As an improvement of the present invention, a second seal for sealing the gap is provided between the inner side of the front end of the step hole and the peripheral surface of the pin, and a third seal for sealing the gap is provided between the inner side of the rear end of the step hole and the peripheral surface of the wiring harness terminal housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model.

[0032] Figure 3 It is a half-section structural schematic diagram of the utility model, in which the pin limiter is hidden.

[0033] Figure 4 The utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0034] Figure 5 It is a schematic structural diagram of the parts of the utility model in an exploded state.

[0035] Figure 6 It is a structural schematic diagram of the pin limiting member of the utility model.

[0036] As shown in the figure: 1. Socket housing; 1.1. Access end; 1.2. Assembly hole; 2. PCBA assembly; 3. PE pin; 4. DC pin; 4.1. Annular flange; 5. Low-voltage pin; 6. Wiring harness terminal housing; 6.1. Accommodating hole; 6.2. Card edge; 7. Wiring harness terminal; 7.1. Receiving hole; 7.2. Card slot; 8. Power supply harness; 9. First seal; 10. Pin limiter; 10.1. Step hole; 11. Second seal; 12. Third seal. DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] See also Figure 1-6 As shown, a new energy vehicle DC charging socket includes:

[0039] The socket housing 1 is provided with an access terminal 1.1 for accessing the charging gun, and the socket housing 1 is provided with a main conductive part and a PCBA assembly 2. The main conductive part is electrically connected to the charging gun after the charging gun is connected to the access terminal 1.1, wherein the main conductive part includes a PE pin 3, a DC pin 4, and a low-voltage pin 5, wherein the low-voltage pin 5 is electrically connected to the PCBA assembly 2 by elasticity;

[0040] A wiring harness terminal housing 6, on which a secondary conductive member is disposed, the secondary conductive member includes a wiring harness terminal 7, and the wiring harness terminal 7 is electrically connected to a power supply wiring harness 8;

[0041] The wiring harness terminal housing 6 is detachably connected to the rear end of the socket housing 1. After the connection, the receiving hole 7.1 at the front end of the wiring harness terminal 7 is used for the rear end of the DC pin 4 to be inserted, and the wall surface contacts to achieve electrical connection.

[0042] After disconnection, the tail end of the DC pin 4 is moved out of the receiving hole 7.1, and the wall is disengaged to disconnect the electrical connection.

[0043] After adopting the above structure, the DC charging socket of a new energy vehicle of the utility model has the following advantages compared with the prior art: the main conductive part is integrated on the socket terminal shell as a DC socket body assembly;

[0044] The PCBA assembly 2 is provided with a wiring port, and the external electrical components are detachably connected to the wiring port via pins.

[0045] The harness terminal 7 and the harness are integrated and arranged on the harness terminal housing 6 as a DC harness terminal 7 assembly;

[0046] Among them, the wiring harness terminal housing 6 is detachably connected to the tail end of the socket terminal housing. After the connection is completed, the receiving hole 7.1 at the front end of the wiring harness terminal 7 is used for the tail end of the DC pin 4 to be inserted, and the wall surface is contacted to achieve electrical connection.

[0047] After the above improvements, the DC socket body assembly and the DC harness terminal 7 assembly can be disassembled or replaced, and the assembly and disassembly are simple.

[0048] The effects of this application are:

[0049] 1. The DC socket body assembly and the DC harness terminal 7 assembly can be modularized. For different vehicle models, only the DC socket body assembly or the DC harness terminal 7 assembly needs to be replaced, which has the characteristics of simple structure and low cost.

[0050] 2. The DC socket body assembly and the DC harness terminal 7 assembly can be produced in parallel, which is conducive to automation and large-scale mass production.

[0051] 3. The two modules of the DC socket body assembly and the DC harness terminal 7 assembly can be quickly replaced (some charging pile DC harness terminal 7 assemblies are plugged into the charging pile body, so the DC harness terminal 7 assembly can also be replaced separately), which is convenient for disassembly and assembly and after-sales.

[0052] See also Figure 2-4 As shown, the wiring harness terminal housing 6 is provided with a receiving hole 6.1 that passes through the front and back, and a card edge 6.2 that extends forward is provided at the front end opening of the receiving hole 6.1. The main body of the wiring harness terminal 7 is placed in the receiving hole 6.1, and the front end of the wiring harness terminal 7 extends out from the front end opening of the receiving hole 6.1. The peripheral side of the wiring harness terminal 7 is provided with a card slot 7.2 for the card edge 6.2 to be engaged, and the whole is inserted into the step hole 10.1 to form a CPA structure to prevent the card edge 6.2 from being separated from the card slot 7.2. After the above improvement, the main body of the wiring harness terminal 7 is a cylindrical structure. During assembly, the front end of the wiring harness terminal 7 is first inserted into the rear end of the receiving hole 6.1, and moved forward to pass through the front end of the receiving hole 6.1. The card edge 6.2 can be stably fitted in the card slot 7.2 to limit the forward and backward movement of the wiring harness terminal 7, so that its position is stable, the device operates reliably, and has a long service life.

[0053] Of course, the above-mentioned structural matching mode also enables the wiring harness terminal 7 to be removed and replaced, which has the characteristics of simple disassembly and assembly and convenient maintenance.

[0054] See also Figure 3 As shown, the power supply harness 8 is inserted from the tail end of the receiving hole 6.1 and connected to the tail end of the harness terminal 7 by welding or crimping. After the above improvement, it has the characteristics of reasonable structure layout, stable connection and reliable operation.

[0055] See also Figure 3 As shown, a first sealing member 9 is provided between the inner wall surface of the rear end of the receiving hole 6.1 and the peripheral side of the power supply harness 8. The first sealing member 9 may be an elastic sealing ring, which is used to seal the gap between the power supply harness 8 and the receiving hole 6.1, prevent water from entering from the rear end of the receiving hole 6.1, improve the waterproof performance of the device, and make the operation reliable and the service life long.

[0056] See also Figure 2-6 As shown, a detachable pin stopper 10 is provided at the rear end of the socket housing 1, and the pin stopper 10 is located between the socket housing 1 and the wiring harness terminal housing 6;

[0057] The pin stopper 10 is provided with a stepped hole 10.1;

[0058] The tail end of the DC pin 4 passes through the front end of the stepped hole 10.1 to the inside;

[0059] The front end of the wiring harness terminal housing 6 extends into the inner side of the rear end of the step hole 10.1.

[0060] The front end of the DC pin 4 is inserted into the assembly hole 1.2 on the socket housing 1, and the rear end of the DC pin 4 is provided with an annular flange;

[0061] The end surface of the pin stopper 10 is disposed against the end surface of the flange tail.

[0062] After the above improvement, the socket housing 1 can be provided with an assembly hole 1.2 corresponding to each pin component, and then the pin can be installed into the corresponding assembly hole 1.2, and the front end of the pin can be against the assembly hole 1.2 to limit the excessive forward movement of the pin, and the tail end of the pin leaks out to the outside of the step hole 10.1;

[0063] Furthermore, the pin stopper 10 is fixed to the rear end of the socket housing 1 through a threaded connector, and an end face is provided on the pin stopper 10 to abut against the rear end face of the flange on the DC pin 4, thereby firmly fixing the DC pin 4, making the device firmly connected, highly reliable, and having a long service life;

[0064] The wiring harness terminal housing 6 is also fixed to the rear end of the socket housing 1 by a threaded connector. After the connection is completed, the receiving hole 7.1 at the front end of the wiring harness terminal 7 can receive the rear end of the DC pin 4. After the wiring harness terminal housing 6 is connected to the socket housing 1, the connection between the wiring harness terminal 7 and the DC pin 4 can be completed synchronously. The structure has the characteristics of easy disassembly and assembly, simple maintenance, and stable connection.

[0065] See also Figure 2-6 As shown, a second seal 11 for sealing the gap is provided between the inner side of the front end of the step hole 10.1 and the peripheral surface of the pin, and a third seal 12 for sealing the gap is provided between the inner side of the rear end of the step hole 10.1 and the peripheral surface of the wiring harness terminal housing 6. The second seal 11 and the third seal 12 also use elastic sealing rings, wherein the second seal 11 forms a seal between the inner side of the front end of the step hole 10.1 and the peripheral side of the DC pin 4, and the third seal 12 forms a seal between the inner side of the rear end of the step hole 10.1 and the outer side of the wiring harness terminal housing 6, which can limit the entry of water from the front of the wiring harness terminal housing 6, and protect the connection between the rear end of the pin and the wiring harness terminal 7 in a closed environment, and has the characteristics of good waterproof performance, reliable use, and long service life.

[0066] In addition, in the present application, a matching space is provided at the rear end of the socket shell 1 for accommodating a pin limiter 10. The PCBA assembly 2 is also provided in the matching space and is located between the rear end of the socket shell 1 and the pin limiter 10. After the pin limiter 10 and the wiring harness terminal shell 6 are assembled, there is still a residual matching space between the pin limiter 10 and the end face of the rear end of the socket shell 1. Finally, a colloid is injected into the matching space to form a seal and fix the internal PCBA assembly 2, PE pin 3, DC pin 4, low voltage pin 5, and pin limiter 10 to prevent water from entering the matching space, thereby further improving the waterproof performance and ensuring reliable use and long service life.

[0067] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A new energy vehicle DC charging socket, characterized in that: include: A socket housing (1), wherein the socket housing (1) is provided with an access terminal (1.1) for accessing a charging gun, and the socket housing (1) is provided with a main conductive component and a PCBA assembly (2), wherein the main conductive component is electrically connected to the charging gun after the charging gun is connected to the access terminal (1.1), wherein the main conductive component comprises a PE plug pin (3), a DC plug pin (4), and a low-voltage plug pin (5), wherein the low-voltage plug pin (5) is electrically connected to the PCBA assembly (2) in an elastic manner; A wiring harness terminal housing (6), wherein the wiring harness terminal housing (6) is provided with a secondary conductive member, wherein the secondary conductive member comprises a wiring harness terminal (7), and the wiring harness terminal (7) is electrically connected to a power supply wiring harness (8); The wiring harness terminal housing (6) is detachably connected to the rear end of the socket housing (1). After connection, the receiving hole (7.1) at the front end of the wiring harness terminal (7) is used for the rear end of the DC plug pin (4) to be inserted, and the wall surfaces are in contact to achieve electrical connection. After disconnection, the tail end of the DC pin (4) is moved out of the receiving hole (7.1), and the wall surface is disengaged to disconnect the electrical connection.

2. A new energy vehicle DC charging socket according to claim 1, characterized in that: The wiring harness terminal housing (6) is provided with a receiving hole (6.1) penetrating from front to back, a card edge (6.2) extending in a forward direction is provided at the front end opening of the receiving hole (6.1), the wiring harness terminal (7) body is placed in the receiving hole (6.1), and the front end of the wiring harness terminal (7) extends out from the front end opening of the receiving hole (6.1), a card slot (7.2) for the card edge (6.2) to be engaged is provided on the peripheral side of the wiring harness terminal (7), and the wiring harness terminal (7) is integrally inserted into the step hole (10.1) to form a CPA structure to prevent the card edge (6.2) from being separated from the card slot (7.2).

3. A new energy vehicle DC charging socket according to claim 2, characterized in that: The power supply harness (8) passes through the rear end of the accommodating hole (6.1) and is connected to the rear end of the harness terminal (7) by welding or crimping.

4. A new energy vehicle DC charging socket according to claim 3, characterized in that: A first sealing member (9) is provided between the inner wall surface of the rear end of the accommodating hole (6.1) and the peripheral side of the power supply harness (8).

5. A new energy vehicle DC charging socket according to claim 1, characterized in that: A detachable pin stopper (10) is provided at the rear end of the socket housing (1), and the pin stopper (10) is located between the socket housing (1) and the wiring harness terminal housing (6); The pin stopper (10) is provided with a stepped hole (10.1); The tail end of the DC pin (4) is inserted into the inner side from the front end of the stepped hole (10.1); The front end of the wiring harness terminal housing (6) extends into the inner side of the rear end of the step hole (10.1).

6. A new energy vehicle DC charging socket according to claim 5, characterized in that: The front end of the DC plug pin (4) is inserted into the assembly hole (1.2) on the socket housing (1), and the rear end of the DC plug pin (4) is provided with an annular flange; The end surface of the pin stopper (10) is arranged to abut against the end surface of the flange tail.

7. A new energy vehicle DC charging socket according to claim 5, characterized in that: A second sealing member (11) for sealing the gap is provided between the inner side of the front end of the step hole (10.1) and the peripheral surface of the plug pin, and a third sealing member (12) for sealing the gap is provided between the inner side of the rear end of the step hole (10.1) and the peripheral surface of the wiring harness terminal housing (6).

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