Alternating current charging converter for new energy automobile

Abstract

A new energy automobile alternating current charging converter comprises a main shell and a charging gun head installed at the lower end of the main shell, the upper end of the main shell is provided with an input end, the lower end of the charging gun head is provided with an output end, and a positioning rim and a control circuit board are arranged in the main shell. The positioning rim is provided with a first high-voltage switching column, a second high-voltage switching column, a first control switching column, a second control switching column, a grounding switching column, a first control switching column and a second control switching column, and the control circuit board is provided with a first connecting hole, a second connecting hole, a third connecting hole, a fourth connecting hole and a fifth connecting hole. The first control switching column and the second control switching column are connected through a first line, the first control switching column and the grounding switching column are provided with a voltage stabilizing diode Z and a diode D in series through a second line, and the grounding switching column and the second control switching column are provided with a first resistor R and a second resistor R in series through a third line. And the normally closed microswitch is connected in parallel with two ends of the first resistor R through a connecting line.

Description

Technical Field

[0001] The utility model relates to an AC charging converter for new energy vehicles. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as the power source, integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles. Most current new energy vehicles are pure electric. A pure electric vehicle is a vehicle that uses a single battery as the energy storage power source. It uses the battery as the energy storage power source, supplies electrical energy from the battery to the motor, drives the motor to operate, and thus propels the vehicle forward. Therefore, a socket is essential for the charging process of a pure electric vehicle, and the vehicle needs to be charged regularly.

[0003] The relatively common charging methods for existing new energy vehicles are charging with a charging pile and charging with a portable charger. Charging with a charging pile needs to be carried out at a designated place, while charging with a portable charger can be carried out at any location. In either case, a special charging gun is required for charging. ZL202321195835.8 discloses a charging gun adapter for electrical signal conversion between a charging gun and a charging gun socket. The charging gun adapter includes a housing and connection terminals. The two ends of the housing are respectively provided with a first port for connecting the charging gun and a second port for connecting the charging gun socket. The connection terminals include a first end and a second end. The first end and the second end are integrally formed, and a signal pin for transmitting a control signal protrudes from the front end of the first end. The first end and the signal pin are both arranged in the first port, and the second end is fixed in the second port.

[0004] This kind of charging gun adapter adopts an integrated design of connection terminals in terms of structure, and the low-voltage end and the high-voltage end are directly connected and are close to each other. Since the voltage and current during the charging of new energy vehicles are relatively large, especially during the operation of the user's plugging and unplugging, it is necessary to ensure a rapid and safe on-off during the charging process to ensure personal safety and prevent serious safety accidents. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem that the charging process of the charging gun converter for new energy vehicles must ensure a rapid and safe on-off during the charging operation.

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows: An AC charging converter for a new energy vehicle, comprising: a main housing, the upper end of the main housing has an input end, and the first end of the first high-voltage transfer column, the first end of the second high-voltage transfer column, the first end of the ground transfer column, the first control wiring column and the second control wiring column are arranged inside the input end. A micro handle is installed outside the main housing, and the micro handle is connected with a normally closed micro switch; a charging gun head, the charging gun head is installed at the lower end of the main housing, and the lower end of the charging gun head has an output end, and the second end of the first high-voltage transfer column, the second end of the second high-voltage transfer column, the second end of the ground transfer column, the first control wiring column and the second control wiring column are arranged inside the output end; a positioning wheel rim, the positioning wheel rim is arranged between the main housing and the charging gun head, and a plurality of positioning holes are arranged on the circumference of the positioning wheel rim. The first high-voltage transfer column, the second high-voltage transfer column, the first control transfer column, the second control transfer column, the ground transfer column, the first control wiring column, the second control wiring column and the normally closed micro switch are respectively installed in the corresponding positioning holes; a control circuit board, the control circuit board is arranged below the positioning wheel rim, and a first connection hole, a second connection hole, a third connection hole, a fourth connection hole and a fifth connection hole are arranged on the control circuit board. The lower end of the first control transfer column extends downward and is inserted into the first connection hole, the lower end of the second control transfer column extends downward and is inserted into the second connection hole, the upper end of the first control wiring column extends upward and is inserted into the third connection hole, the upper end of the second control wiring column extends upward and is inserted into the fourth connection hole, and the upper end of the ground transfer column extends upward and is inserted into the fifth connection hole. Among them, the first control transfer column and the first control wiring column are connected by a first line, a voltage stabilizing diode Z and a diode D are serially installed between the first control wiring column and the ground transfer column through a second line, a first resistor R1 and a second resistor R2 are serially installed between the ground transfer column and the second control wiring column through a third line, and the normally closed micro switch is connected in parallel to both ends of the first resistor R through a connecting wire.

[0007] Preferably, the control circuit board is semicircular, the control circuit board has a mounting hole, and a first screw passes through the mounting hole to fix the control circuit board to the lower surface of the positioning wheel rim and connect it to the outer shell base. The second ends of the first high-voltage transfer column and the second high-voltage transfer column respectively pass by the side of the control circuit board. The control circuit board has a positioning hole, and the lower surface of the positioning wheel rim has a positioning rod, and the positioning rod is inserted into the positioning hole.

[0008] Preferably, the first connection hole and the third connection hole are located on one side of the control circuit board, the second connection hole and the fourth connection hole are located on the other side of the control circuit board, and the fifth connection hole is located in the middle of the control circuit board.

[0009] Preferably, claw springs are respectively arranged in the first connection hole, the third connection hole and the fourth connection hole, and the first control connection terminal, the first control connection terminal and the second control connection terminal are respectively connected to the corresponding claw springs.

[0010] Preferably, a crown spring is arranged in the fifth connection hole, and the ground transfer post is connected to the crown spring.

[0011] Preferably, a micro-motion handle is rotatably installed on the outside of the main housing through a first pin. The micro-motion handle has a first hook facing the output end. The upper end of the micro-motion handle is supported by a first spring on the housing. A locking handle is rotatably installed on the outside of the main housing through a second pin. The locking handle has a second hook facing the input end. The lower end of the locking handle is supported by a second spring on the housing.

[0012] Preferably, a gun head lining is installed in the charging gun head. A gun head sealing ring is arranged between the charging gun head and the gun head lining. A sealing ring is arranged between the charging gun head and the main housing. The charging gun head and the main housing are fixed through a second screw.

[0013] Preferably, the second transfer ends of the first high-voltage transfer post, the second high-voltage transfer post and the ground transfer post are respectively formed into a clamp-like structure by milling grooves on a silver-plated copper column, and a snap ring is sleeved on the end of the clamp-like structure.

[0014] Preferably, the diameters of the first high-voltage transfer post, the second high-voltage transfer post and the ground transfer post are larger than the diameters of the first control transfer post, the second control transfer post, the first control connection terminal and the second control connection terminal.

[0015] Preferably, rubber rings are respectively sleeved on both ends of the first high-voltage transfer post, both ends of the second high-voltage transfer post, both ends of the ground transfer post, the first control transfer post, the second control transfer post, the first control connection terminal and the second control connection terminal.

[0016] Due to the adoption of the above technical solution, the AC charging converter for new energy vehicles of the present utility model has the following advantages: The first control transfer column and the first control connection column are connected through the first line. A 9V voltage stabilizing diode Z1 and a diode D1 are serially installed between the first control connection column and the ground transfer column through the second line. A first resistor R1 and a second resistor R2 are serially installed between the ground transfer column and the second control connection column through the third line. The normally closed microswitch is connected in parallel to both ends of the first resistor R1 through a connecting wire. When the micro handle is operated, if the charging pile detects that the resistance between PP and PE is the series value, the charging circuit is immediately disconnected, thus ensuring the safety during the process of unplugging the charging gun. Conversely, when the charging gun is inserted in place and the micro handle is released, R1 is short-circuited, and when the charging pile detects that the resistance between PP and PE is the second resistance value, the charging circuit is connected to ensure electrical safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG Figure 1 35 is a three-dimensional exploded view of the AC charging converter for new energy vehicles according to the present utility model;

[0018] FIG Figure 2 36 is a three-dimensional view of the AC charging converter for new energy vehicles according to the present utility model;

[0019] FIG Figure 3 37 is a three-dimensional view of the control circuit board of the AC charging converter for new energy vehicles according to the present utility model;

[0020] FIG Figure 4 38 is a circuit diagram of the control circuit board of the AC charging converter for new energy vehicles according to the present utility model;

[0021] FIG Figure 5 39 is a circuit schematic diagram of the control circuit board of the AC charging converter for new energy vehicles according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Hereinafter, the terms used in the specification will be briefly described, and the embodiments will be described in detail. All terms, including descriptive terms or technical terms, used herein should be construed as having the meanings understood by those of ordinary skill in the art. However, depending on the intention of those of ordinary skill in the art, precedent, or the emergence of new technologies, these terms may have different meanings.

[0023] In addition, some terms can be selected by the applicant, and in such cases, the meanings of the selected terms will be described in detail in the detailed description of the embodiments. Therefore, the terms used herein must be defined based on the meanings of the terms together with the descriptions throughout the specification. In addition, when a component "comprises" or "includes" an element, unless there is a specific description to the contrary, the component may also include other elements without excluding other elements. In the following description, terms such as "component" and "module" refer to units for processing at least one function or operation, where the units and modules can be implemented as hardware or software or by combining hardware and software.

[0024] Embodiments will now be described more fully with reference to the accompanying drawings. However, the embodiments can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the embodiments to those of ordinary skill in the art. In the following description, well-known functions or structures are not described in detail because they would obscure the embodiments with unnecessary detail, and throughout the specification, like reference numerals in the drawings denote the same or similar elements.

[0025] Attached Figure 1 is a three-dimensional exploded view of an AC charging converter for a new energy vehicle according to the present utility model. Attached Figure 2 is a three-dimensional view of an AC charging converter for a new energy vehicle according to the present utility model. The AC charging converter in this embodiment includes a main housing 1 and a charging gun head 2 installed at the lower end of the main housing 1. The product adopts a rubber coating technology to achieve the effects of sealing and anti-drop, and the overall material is a flame-retardant and high-voltage-resistant engineering plastic to achieve the safety level. A gun head lining 5 is installed inside the charging gun head 2, a gun head sealing ring 6 is provided between the charging gun head 2 and the gun head lining 5, a sealing ring 9 is provided between the charging gun head 2 and the main housing 1, and the charging gun head 2 and the main housing 1 are fixed by a second screw 10.

[0026] The upper end of the main housing 1 has an input end, in which the first ends of the first high-voltage transfer post 31, the second high-voltage transfer post 32, the ground transfer post 35, the first control transfer post 33 and the second control transfer post 34 are arranged. A micro-motion handle 7 is installed outside the main housing 1, and the micro-motion handle 7 is connected with a normally-closed micro-switch 73. The charging gun head 2 is installed at the lower end of the main housing 1. The lower end of the charging gun head 2 has an output end, in which the second ends of the first high-voltage transfer post 31, the second high-voltage transfer post 32, the ground transfer post 35, the first control connection post 38 and the second control connection post 39 are arranged. The positioning wheel rim 3 is arranged between the main housing 1 and the charging gun head 2. A plurality of positioning holes are arranged on the circumference of the positioning wheel rim 3. The first high-voltage transfer post 31, the second high-voltage transfer post 32, the first control transfer post 33, the second control transfer post 34, the ground transfer post 35, the first control connection post 38, the second control connection post 39 and the normally-closed micro-switch 73 are respectively installed in the corresponding positioning holes.

[0027] The micro-motion handle 7 is rotatably installed outside the main housing 1 through a first pin 71. The micro-motion handle 7 has a first hook 74 facing the output end. The upper end of the micro-motion handle 7 is supported by a first spring 72 on the housing 1. The lock handle 8 is rotatably installed outside the main housing 1 through a second pin 81. The lock handle 8 has a second hook 83 facing the input end. The lower end of the lock handle 8 is supported by a second spring 82 on the housing 1.

[0028] The second transfer ends of the first high-voltage transfer post 31, the second high-voltage transfer post 32 and the ground transfer post 35 are respectively formed into a clamp-like structure by milling grooves on a copper column plated with silver. A snap ring 36 is sleeved on the end of the clamp-like structure. The connection post interface is formed into a clamp-like contact by milling grooves to ensure good contact and prevent overheating caused by virtual contact. The converter conductor uses a copper cylinder to increase the service current and reduce the drawback of overheating caused by wires. The diameters of the first high-voltage transfer post 31, the second high-voltage transfer post 32 and the ground transfer post 35 are larger than those of the first control transfer post 33, the second control transfer post 34, the first control connection post 38 and the second control connection post 39. Rubber rings 37 are respectively sleeved on the two ends of the first high-voltage transfer post 31, the two ends of the second high-voltage transfer post 32, the two ends of the ground transfer post 35, the first control transfer post 33, the second control transfer post 34, the first control connection post 38 and the second control connection post 39.

[0029] Appendix Figure 3 is a three-dimensional view of the control circuit board of the AC charging converter for new energy vehicles according to the present utility model. Appendix Figure 4 is a circuit diagram of the control circuit board of the AC charging converter for new energy vehicles according to the present utility model. Appendix Figure 5This is the circuit schematic diagram of the control circuit board of the AC charging converter for new energy vehicles according to the present utility model. The control circuit board 4 is arranged below the positioning rim 3. The substrate material is a single-sided double-sided board made of FR-4, with a copper foil thickness of 35um and a board thickness of 1.6 ± 0.15mm. The surface treatment uses lead-free spray tin, the die-cutting method is ROUTE, the solder mask ink is lead-free green matte, the text ink is lead-free white, and the temperature resistance is 135°C.

[0030] The control circuit board 4 is semi-circular. On the control circuit board 4, there are a first connection hole 41, a second connection hole 42, a third connection hole 43, a fourth connection hole 44, and a fifth connection hole 45. The first connection hole 41 and the third connection hole 43 are located on one side of the control circuit board 4, the second connection hole 42 and the fourth connection hole 44 are located on the other side of the control circuit board 4, and the fifth connection hole 45 is located in the middle of the control circuit board 4. The lower end of the first control transfer post 33 extends downward and is inserted into the first connection hole 41, the lower end of the second control transfer post 34 extends downward and is inserted into the second connection hole 42, the upper end of the first control connection post 38 extends upward and is inserted into the third connection hole 43, the upper end of the second control connection post 39 extends upward and is inserted into the fourth connection hole 44, and the upper end of the ground transfer post 35 extends upward and is inserted into the fifth connection hole 45.

[0031] Claw springs 46 are respectively arranged in the first connection hole 41, the third connection hole 43, and the fourth connection hole 44. The first control transfer post 33, the first control connection post 38, and the second control connection post 39 are respectively connected to the corresponding claw springs 46. A crown spring 47 is arranged in the fifth connection hole 45, and the ground transfer post 35 is connected to the crown spring 47.

[0032] The control circuit board 4 has a mounting hole 48. The first screw 11 passes through the mounting hole 48 to fix the control circuit board 4 to the lower surface of the positioning rim 3 and is connected to the main housing 1. The second ends of the first high-voltage transfer post 31 and the second high-voltage transfer post 32 respectively pass by the control circuit board 4. The control circuit board 4 has a positioning hole 49, and the lower surface of the positioning rim 3 has a positioning rod 30, and the positioning rod 30 is inserted into the positioning hole 49.

[0033] The first control transfer post 33 and the first control terminal 38 are connected by a first line. A 9V zener diode Z1 and a diode D1 are serially installed between the first control terminal 38 and the ground transfer post 35 through a second line. A first resistor 330 ohms R1 and a second resistor 150 ohms R2 are serially installed between the ground transfer post 35 and the second control terminal 39 through a third line. The normally closed micro switch 73 is connected in parallel to both ends of the first resistor R1 through a connection wire 40. When the micro handle 7 is operated and the charging pile detects that the resistance between PP and PE is 480 ohms, the charging circuit is immediately disconnected, ensuring the safety during the process of unplugging the charging gun. On the contrary, when the charging gun is inserted in place and the micro handle 7 is released, R1 is short-circuited, and the charging pile detects that the resistance between PP and PE is 150 ohms, then the charging circuit is connected to ensure electrical safety.

[0034] It should be understood that the embodiments described herein are to be considered in a descriptive sense only and not for purposes of limitation. The description of features or aspects within each embodiment is generally to be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those of ordinary skill in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims.

Claims

1. An AC charging converter for new energy vehicles, characterized in that: Comprising: A main housing (1), the upper end of the main housing (1) has an input end, the first end of the first high-voltage transfer post (31), the first end of the second high-voltage transfer post (32), the first end of the ground transfer post (35), and the first control transfer post (33) and the second control transfer post (34) are arranged inside the input end. A micro handle (7) is installed outside the main housing (1), and the micro handle (7) is connected to a normally closed micro switch (73); A charging gun head (2), the charging gun head (2) is installed at the lower end of the main housing (1), the lower end of the charging gun head (2) has an output end, the second end of the first high-voltage transfer post (31), the second end of the second high-voltage transfer post (32), the second end of the ground transfer post (35), and the first control terminal (38) and the second control terminal (39) are arranged inside the output end; A positioning rim (3), the positioning rim (3) is arranged between the main housing (1) and the charging gun head (2), a plurality of positioning holes are arranged on the circumference of the positioning rim (3), and the first high-voltage transfer post (31), the second high-voltage transfer post (32), the first control transfer post (33), the second control transfer post (34), the ground transfer post (35), the first control terminal (38), the second control terminal (39), and the normally closed micro switch (73) are respectively installed in the corresponding positioning holes; A control circuit board (4), the control circuit board (4) is arranged below the positioning rim (3), the control circuit board (4) is provided with a first connection hole (41), a second connection hole (42), a third connection hole (43), a fourth connection hole (44), and a fifth connection hole (45). The lower end of the first control transfer post (33) extends downward and is inserted into the first connection hole (41), the lower end of the second control transfer post (34) extends downward and is inserted into the second connection hole (42), the upper end of the first control terminal (38) extends upward and is inserted into the third connection hole (43), the upper end of the second control terminal (39) extends upward and is inserted into the fourth connection hole (44), and the upper end of the ground transfer post (35) extends upward and is inserted into the fifth connection hole (45). Among them, the first control transfer post (33) and the first control terminal (38) are connected by a first line, a voltage stabilizing diode Z1 and a diode D1 are serially installed between the first control terminal (38) and the ground transfer post (35) through a second line, a first resistor R1 and a second resistor R2 are serially installed between the ground transfer post (35) and the second control terminal (39) through a third line, and the normally closed micro switch (73) is connected in parallel to both ends of the first resistor R1 through a connecting wire (40).

2. The AC charging converter for new energy vehicles according to claim 1, wherein: The described control circuit board (4) is semi-circular. The control circuit board (4) has mounting holes (48). The first screw (11) passes through the mounting holes (48) to fix the control circuit board (4) to the lower surface of the positioning rim (3) and connect it to the main housing (1). The second ends of the first high-voltage transfer posts (31) and the second high-voltage transfer posts (32) respectively pass by the side of the control circuit board (4). The control circuit board (4) has positioning holes (49). The lower surface of the positioning rim (3) has positioning rods (30). The positioning rods (30) are inserted into the positioning holes (49).

3. The AC charging converter for new energy vehicles according to claim 2, characterized in that: The described first connection hole (41) and the third connection hole (43) are located on one side of the control circuit board (4). The second connection hole (42) and the fourth connection hole (44) are located on the other side of the control circuit board (4). The fifth connection hole (45) is located in the middle of the control circuit board (4).

4. The AC charging converter for new energy vehicle according to claim 3, wherein: Claw springs (46) are respectively arranged in the first connection hole (41), the third connection hole (43), and the fourth connection hole (44). The first control transfer post (33), the first control terminal (38), and the second control terminal (39) are respectively connected to the corresponding claw springs (46).

5. The AC charging converter for new energy vehicles according to claim 3, characterized in that: A crown spring (47) is arranged in the fifth connection hole (45). The ground transfer post (35) is connected to the crown spring (47).

6. The AC charging converter for new energy vehicles according to claim 1, characterized in that: A micro handle (7) is rotatably mounted on the outside of the main housing (1) through a first pin (71). The micro handle (7) has a first hook (74) facing the output end. The upper end of the micro handle (7) is supported by a first spring (72) on the main housing (1). A lock handle (8) is rotatably mounted on the outside of the main housing (1) through a second pin (81). The lock handle (8) has a second hook (83) facing the input end. The lower end of the lock handle (8) is supported by a second spring (82) on the main housing (1).

7. The AC charging converter for new energy vehicles according to claim 1, wherein: A gun head lining (5) is installed in the charging gun head (2). A gun head sealing ring (6) is arranged between the charging gun head (2) and the gun head lining (5). A sealing ring (9) is arranged between the charging gun head (2) and the main housing (1). The charging gun head (2) and the main housing (1) are fixed through a second screw (10).

8. The AC charging converter for new energy vehicles according to claim 1, wherein: The second transfer ends of the first high-voltage transfer posts (31), the second high-voltage transfer posts (32), and the ground transfer posts (35) respectively form a clamp-like structure by milling grooves on copper-silver plated posts. A snap ring (36) is sleeved at the end of the clamp-like structure.

9. The AC charging converter for new energy vehicle according to claim 8, wherein: The diameters of the first high-voltage transfer posts (31), the second high-voltage transfer posts (32), and the ground transfer posts (35) are larger than the diameters of the first control transfer post (33), the second control transfer post (34), the first control terminal (38), and the second control terminal (39).

10. The AC charging converter for new energy vehicle according to claim 1, characterized in that: Rubber rings (37) are respectively sleeved on both ends of the first high-voltage adapter post (31), both ends of the second high-voltage adapter post (32), both ends of the ground adapter post (35), the first control adapter post (33), the second control adapter post (34), the first control terminal (38) and the second control terminal (39).

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