New energy vehicle AC fast charging converter

Abstract

A new energy vehicle AC charging converter comprises: a main shell, the bottom surface of the main shell has an input end, the input end is provided with a first end of a first high-voltage adapter column, a first end of a second high-voltage adapter column, a first end of a grounding adapter column, and a first control adapter column and a second control adapter column; an outer shell cover installed on the main shell, the top surface of the outer shell cover has an output end, the output end is provided with a second end of the first high-voltage adapter column, a second end of the second high-voltage adapter column, a second end of the grounding adapter column, and a first control terminal and a second control terminal; a control circuit board is arranged between the main shell and the outer shell cover, the control circuit board is provided with a first connection hole, a second connection hole, a third connection hole and a fourth connection hole, the first control adapter column and the first control terminal are serially installed with a temperature control switch through a first circuit, and the second control adapter column and the second control terminal are connected through a second circuit.

Description

Technical Field

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

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as a power source, integrate advanced technologies in vehicle power control and drive, and have advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles. Most of the current new energy vehicles are pure electric. Pure electric vehicles are vehicles that use a single battery as a power source for energy storage. They use batteries as a power source for energy storage, and provide electricity to the motor through the battery to drive the motor to run, thereby driving the vehicle. Therefore, sockets are essential for the charging process of pure electric vehicles, and the vehicle needs to be charged regularly.

[0003] The commonly used charging methods for existing new energy vehicles are charging pile charging and portable charger charging. Charging with a charging pile needs to be done at a designated place, while charging with a portable charger can be done at any location. Regardless of the method, a dedicated charging gun is required for charging. ZL202321195835.8 discloses a charging gun adapter for converting electrical signals between a charging gun and a charging gun socket. The charging gun adapter includes a shell and a connecting terminal. The two ends of the shell are respectively provided with a first port for connecting the charging gun and a second port for connecting the charging gun socket. The connecting terminal includes 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 is convexly provided at the front end of the first end. The first end and the signal pin are both inserted into the first port, and the second end is fixed in the second port.

[0004] The structure of this charging gun adapter adopts an integrated connection terminal design. The low-voltage end and the high-voltage end are directly connected and close to each other. Since the voltage and current of charging new energy vehicles are relatively large, especially when the user is plugging and unplugging, the charging process must be quickly and safely connected and disconnected to ensure personal safety and prevent serious safety accidents. Summary of the invention

[0005] The utility model aims to solve the safety problem caused by the heat generated by the charging gun converter of the new energy vehicle during the charging process.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an AC charging converter for new energy vehicles, comprising: a main shell, the bottom surface of the main shell having an input end, the input end is provided with a first end of a first high-voltage adapter column, a first end of a second high-voltage adapter column, a first end of a grounding adapter column, and a first control adapter column and a second control adapter column; an outer shell cover installed on the main shell, the top surface of the outer shell cover having an output end, the output end is provided with a second end of a first high-voltage adapter column, a second end of a second high-voltage adapter column, a second end of a grounding adapter column, and a first control terminal and a second control terminal; a control circuit board arranged between the main shell and the outer shell cover, the control circuit board is provided with a first connection A connection hole, a second connection hole, a third connection hole and a fourth connection hole, the upper end of the first control adapter column extends upward and is inserted into the first connection hole, the lower end of the first control terminal extends downward and is inserted into the second connection hole, the upper end of the second control adapter column extends upward and is inserted into the third connection hole, the lower end of the second control terminal extends downward and is inserted into the fourth connection hole, wherein the first control adapter column and the first control terminal are installed in series with a temperature control switch through a first circuit, and the second control adapter column and the second control terminal are connected through a second circuit; the control circuit board separates the first high-voltage adapter column, the second high-voltage adapter column and the grounding adapter column from each other.

[0007] Preferably, the control circuit board has a Y-shaped structure.

[0008] Preferably, the first connecting hole and the second connecting hole are located on the first branch of the control circuit board, the third connecting hole and the fourth connecting hole are located on the second branch of the control circuit board, the third branch of the control circuit board has a mounting hole, and screws pass through the mounting hole to fix the control circuit board between the main shell and the outer shell cover.

[0009] Preferably, the first high-voltage transfer column, the second high-voltage transfer column, and the ground transfer column are respectively located between the branches of the control circuit board.

[0010] Preferably, claw springs are respectively provided in the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole, and the first control adapter column, the second control adapter column, the first control terminal column and the second control terminal column are correspondingly connected to the claw springs.

[0011] Preferably, the first end of the first high-voltage adapter column, the first end of the second high-voltage adapter column, the first end of the grounding adapter column, and the first control adapter column and the second control adapter column respectively have a milled groove clamp-like structure, and the center of the milled groove clamp-like structure of the first high-voltage adapter column and the second high-voltage adapter column has a core column.

[0012] Preferably, the diameters of the first high-voltage adapter column and the second high-voltage adapter column are larger than the diameters of the ground adapter column, the first control adapter column and the second control adapter column.

[0013] Preferably, there is an offset between the first end and the second end of the first high-voltage adapter column and the second high-voltage adapter column.

[0014] Preferably, rubber rings are respectively provided on both ends of the first high-voltage adapter column, both ends of the second high-voltage adapter column, both ends of the grounding adapter column, the first control adapter column, the second control adapter column, the first control terminal column, and the second control terminal column.

[0015] Preferably, the main shell and the outer shell cover are sealed by ultrasonic welding.

[0016] Due to the adoption of the above technical solution, the control circuit board of the utility model separates the first high-voltage transfer column, the second high-voltage transfer column, and the ground transfer column from each other to ensure insulation under high temperature conditions. On the other hand, a temperature control switch is designed between the control terminals, and the circuit design is relatively safe, ensuring the safety of charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 A three-dimensional exploded view of an AC charging converter for new energy vehicles according to the utility model;

[0018] Attached Figure 2 It is a three-dimensional diagram of the AC charging converter for new energy vehicles according to the utility model;

[0019] Attached Figure 3 A three-dimensional diagram of a control circuit board of an AC charging converter for a new energy vehicle according to the utility model;

[0020] Attached Figure 4 A schematic diagram of a control circuit board of an AC charging converter for a new energy vehicle according to the utility model;

[0021] Attached Figure 5 The utility model is a circuit diagram of an AC charging converter for new energy vehicles. Implementation

[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 interpreted as having meanings understood by those of ordinary skill in the art. However, these terms may have different meanings according to the intentions of those of ordinary skill in the art, precedents, or the emergence of new technologies.

[0023] In addition, some terms can be selected by the applicant, and in this case, the meaning of the selected terms will be described in detail in the detailed description of the embodiment. Therefore, the terms used herein must be defined based on the meaning of the terms together with the description in the entire specification. In addition, when a component "includes" or "contains" 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" indicate a unit for processing at least one function or operation, wherein the unit and module can be implemented as hardware or software or by combining hardware and software and implemented.

[0024] Embodiments will now be described more fully with reference to the accompanying drawings. However, embodiments may be implemented in many different forms and should not be construed as being 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 will obscure the embodiments with unnecessary details, and throughout the specification, the same reference numerals in the drawings represent the same or similar elements.

[0025] Attached Figure 1 Attached is a three-dimensional disassembled diagram of the AC charging converter for new energy vehicles according to the utility model; Figure 2 It is a stereoscopic diagram of an AC charging converter for new energy vehicles according to the utility model; an AC charging converter for new energy vehicles, comprising a main shell 1, an outer shell cover 2 installed on the main shell 1, and a control circuit board 10 arranged between the main shell 1 and the outer shell cover 2. The main shell 1 and the outer shell cover 2 are sealed by ultrasonic welding to achieve a sealing effect, and the plastic material is flame retardant and high pressure resistant to meet the US UL standard.

[0026] The bottom surface of the main shell 1 has an input end, in which the first end of the first high-voltage adapter column 3, the first end of the second high-voltage adapter column 4, the first end of the grounding adapter column 5, and the first control adapter column 6 and the second control adapter column 7 are arranged; the top surface of the outer shell cover 2 has an output end, in which the second end of the first high-voltage adapter column 3, the second end of the second high-voltage adapter column 4, the second end of the grounding adapter column 5, and the first control terminal 8 and the second control terminal 9 are arranged.

[0027] The first end of the first high-voltage transfer column 3, the first end of the second high-voltage transfer column 4, the first end of the grounding transfer column 5, the first control transfer column 6, and the second control transfer column 7 respectively have a milling groove clamp-like structure, the use current is above 40A, the withstand voltage is above 500V, the current is increased to reduce the contact resistance and generate heat, and the center of the milling groove clamp-like structure of the first high-voltage transfer column 3 and the second high-voltage transfer column 4 has a core column 19. The diameter of the first high-voltage transfer column 3 and the second high-voltage transfer column 4 is greater than the diameter of the grounding transfer column 5, the first control transfer column 6, and the second control transfer column 7. There is an offset between the first end and the second end of the first high-voltage transfer column 3 and the second high-voltage transfer column 4. Rubber rings 20 are respectively sleeved on the two ends of the first high-voltage transfer column 3, the two ends of the second high-voltage transfer column 4, the two ends of the grounding transfer column 5, the first control transfer column 6, the second control transfer column 7, the first control terminal 8, and the second control terminal 9.

[0028] Attached Figure 3 Attached is a three-dimensional diagram of the control circuit board of the AC charging converter of the new energy vehicle according to the utility model; Figure 4 Schematic diagram of the control circuit board of the AC charging converter for new energy vehicles according to the utility model; Figure 5 The circuit diagram of the AC charging converter for new energy vehicles according to the utility model is shown in FIG. The control circuit board 10 is in a Y-shaped structure, the base material is a single-layer double-sided board of FR-4, the copper foil thickness is 35um, the board thickness is 1.6±0.15mm, the surface treatment is lead-free tin spraying, the splitting 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.

[0029] A first connecting hole 11, a second connecting hole 12, a third connecting hole 13 and a fourth connecting hole 14 are provided on the control circuit board 10. Claw springs 18 are respectively provided in the first connecting hole 11, the second connecting hole 12, the third connecting hole 13 and the fourth connecting hole 14. The first control adapter column 6, the second control adapter column 7, the first control terminal 8 and the second control terminal 9 are correspondingly connected to the claw springs 18.

[0030] The upper end of the first control adapter post 6 extends upward and is inserted into the first connecting hole 11, the lower end of the first control terminal 8 extends downward and is inserted into the second connecting hole 12, the upper end of the second control adapter post 7 extends upward and is inserted into the third connecting hole 13, and the lower end of the second control terminal 9 extends downward and is inserted into the fourth connecting hole 14, wherein the first control adapter post 6 and the first control terminal 8 are connected in series with a temperature control switch 16 through a first line 15, and the second control adapter post 7 and the second control terminal 9 are connected through a second line 17. During use, if the charging temperature reaches the threshold temperature of the temperature control switch 16, the temperature control switch 16 will disconnect the connection between the first control adapter post 6 and the first control terminal 8, so that the control signal will be disconnected from the charging pile, and the charging process will stop automatically. When the temperature drops below the threshold temperature, the temperature control switch 16 resumes the connection state, and the charging process automatically resumes. The circuit design has high safety and ensures the safety of charging.

[0031] The first connection hole 11 and the second connection hole 12 are located at the first branch of the control circuit board 10, the third connection hole 13 and the fourth connection hole 14 are located at the second branch of the control circuit board 10, the third branch of the control circuit board 10 has a mounting hole 21, and the screw 22 passes through the mounting hole 21 to fix the control circuit board 10 between the main housing 1 and the housing cover 2. The first high-voltage adapter column 3, the second high-voltage adapter column 4, and the ground adapter column 5 are respectively located between the branches of the control circuit board 10.

[0032] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for the purpose of limitation. The description of features or aspects within each embodiment should generally 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, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope defined by the appended claims.

Claims

1. A new energy vehicle AC fast charging converter, characterized in that: include: A main housing (1), wherein the bottom surface of the main housing (1) has an input end, wherein the input end is provided with a first end of a first high-voltage transfer column (3), a first end of a second high-voltage transfer column (4), a first end of a ground transfer column (5), a first control transfer column (6), and a second control transfer column (7); An outer shell cover (2) mounted on the main shell (1), the top surface of the outer shell cover (2) having an output end, the output end being provided with a second end of a first high-voltage transfer column (3), a second end of a second high-voltage transfer column (4), a second end of a ground transfer column (5), a first control terminal (8), and a second control terminal (9); A control circuit board (10) is arranged between the main housing (1) and the outer shell cover (2), wherein the control circuit board (10) is provided with a first connection hole (11), a second connection hole (12), a third connection hole (13) and a fourth connection hole (14), wherein the upper end of the first control adapter post (6) extends upward and is inserted into the first connection hole (11), the lower end of the first control terminal post (8) extends downward and is inserted into the second connection hole (12), and the upper end of the second control adapter post (7) extends upward and inserted into the third connection hole (13); the lower end of the second control terminal (9) extends downward and is inserted into the fourth connection hole (14); wherein the first control adapter terminal (6) and the first control terminal (8) are connected in series with a temperature control switch (16) via a first circuit (15); the second control adapter terminal (7) and the second control terminal (9) are connected via a second circuit (17); and the control circuit board separates the first high-voltage adapter terminal, the second high-voltage adapter terminal, and the ground adapter terminal from each other.

2. The AC fast charging converter for new energy vehicles according to claim 1 is characterized in that: The control circuit board (10) has a Y-shaped structure.

3. The AC fast charging converter for new energy vehicles according to claim 2 is characterized in that: The first connection hole (11) and the second connection hole (12) are located on the first branch of the control circuit board (10), the third connection hole (13) and the fourth connection hole (14) are located on the second branch of the control circuit board (10), the third branch of the control circuit board (10) has a mounting hole (21), and a screw (22) passes through the mounting hole (21) to fix the control circuit board (10) between the main shell (1) and the outer shell cover (2).

4. The new energy vehicle AC fast charging converter according to claim 2 is characterized in that: The first high-voltage transfer column (3), the second high-voltage transfer column (4), and the ground transfer column (5) are respectively located between the branches of the control circuit board (10).

5. The AC fast charging converter for new energy vehicles according to claim 1 is characterized in that: The first connection hole (11), the second connection hole (12), the third connection hole (13), and the fourth connection hole (14) are respectively provided with claw springs (18); the first control adapter column (6), the second control adapter column (7), the first control terminal (8), and the second control terminal (9) are correspondingly connected to the claw springs (18).

6. The AC fast charging converter for new energy vehicles according to claim 1 is characterized in that: The first end of the first high-voltage transfer column (3), the first end of the second high-voltage transfer column (4), the first end of the ground transfer column (5), the first control transfer column (6), and the second control transfer column (7) respectively have a milled groove clamp-like structure, and the center of the milled groove clamp-like structure of the first high-voltage transfer column (3) and the second high-voltage transfer column (4) has a core column (19).

7. The AC fast charging converter for new energy vehicles according to claim 6 is characterized in that: The diameters of the first high-voltage adapter column (3) and the second high-voltage adapter column (4) are greater than the diameters of the ground adapter column (5), the first control adapter column (6) and the second control adapter column (7).

8. The AC fast charging converter for new energy vehicles according to claim 7 is characterized in that: There is an offset between the first end and the second end of the first high-voltage adapter column (3) and the second high-voltage adapter column (4).

9. The AC fast charging converter for new energy vehicles according to claim 1, characterized in that: Rubber rings (20) are respectively sleeved on the two ends of the first high-voltage transfer column (3), the two ends of the second high-voltage transfer column (4), the two ends of the ground transfer column (5), the first control transfer column (6), the second control transfer column (7), the first control terminal (8), and the second control terminal (9).

10. The AC fast charging converter for new energy vehicles according to claim 1, characterized in that: The main shell (1) and the outer shell cover (2) are sealed by ultrasonic welding.

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