Direct-current quick charge converter for new energy automobile

Abstract

A new energy automobile direct current fast charging converter safe and convenient to use is characterized in that a high-voltage input end and a low-voltage input end are arranged on the bottom face of a base, the high-voltage input end is located on the front side of the base, a first high-voltage switching column and a second high-voltage switching column are arranged in the high-voltage input end, and the low-voltage input end is located on the rear side of the base; a first control switching column, a second control switching column and a first end of a grounding binding post are arranged in the low-voltage input end; the shell is installed on the base, an output end is arranged on the top face of the shell and located on the rear side of the shell, and a first high-voltage binding post, a second high-voltage binding post, a first control binding post, a second control binding post and a second end of the grounding binding post are arranged in the output end. The product is waterproof and moisture-proof due to ultrasonic welding sealing, so that the insulating capacity is improved; a thermal overcurrent self-recovery relay module is adopted, so that a thermal overcurrent protection function is realized, and the product is safer; a red copper silver-plated binding post is adopted to reduce large current impedance and prevent heating.

Description

Technical Field

[0001] The utility model relates to a direct current fast charging converter for new energy vehicles. 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 common charging methods for existing new energy vehicles are charging piles and portable chargers. Charging with charging piles needs to be done at designated locations, while charging with portable chargers can be done at any location. Regardless of the method, a dedicated charging gun is required for charging. Since the voltage and current of new energy vehicles are relatively large, in order to better charge the car, the safety and convenience of the charging gun are issues that need to be addressed. Summary of the invention

[0004] The purpose of the utility model is to improve the safety and ease of use of a DC fast charging converter for new energy vehicles.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new energy vehicle DC fast charging converter, comprising: a base, the bottom surface of the base is provided with a high-voltage input terminal and a low-voltage input terminal, the high-voltage input terminal is located on the front side of the base, and the high-voltage input terminal is provided with a first high-voltage adapter column and a second high-voltage adapter column, the low-voltage input terminal is located on the rear side of the base, and the low-voltage input terminal is provided with a first control adapter column, a second control adapter column and a first end of a grounding terminal; a shell installed on the base, the top surface of the shell is provided with an output terminal, the output terminal is located on the rear side of the shell, and the output terminal is provided with a first high-voltage terminal, a second high-voltage terminal, a first control terminal, a second control terminal and The second end of the grounding terminal; a first connecting aluminum plate and a second connecting aluminum plate are arranged between the base and the shell, and positioning plates are arranged on the outside of the first connecting aluminum plate and the second connecting aluminum plate so that the second connecting aluminum plate is spaced and partially staggered and stacked on top of the first connecting aluminum plate. The lower end of the first high-voltage terminal extends downward and is connected to the rear end of the first connecting aluminum plate, and the lower end of the second high-voltage terminal extends downward and is connected to the rear end of the second connecting aluminum plate. The upper end of the first high-voltage adapter column extends upward and is connected to the front end of the first connecting aluminum plate, and the upper end of the second high-voltage adapter column extends upward and is connected to the front end of the second connecting aluminum plate. A control module is installed on the base, and the control module is located below the first connecting aluminum plate.

[0006] Preferably, openings are provided at corresponding positions of the first connecting aluminum plate and the second connecting aluminum plate, the control module has a first connecting hole and a second connecting hole, the lower end of the first control terminal is inserted into the first connecting hole through the opening, and the lower end of the second control terminal is inserted into the second connecting hole through the opening, the control module has a third connecting hole and a fourth connecting hole, the upper end of the first control adapter column is inserted into the third connecting hole, and the upper end of the second control terminal is inserted into the fourth connecting hole.

[0007] Preferably, the upper end of the first control adapter column passes through the third connection hole and is connected with a buckle, and the upper end of the second control terminal passes through the fourth connection hole and is connected with a buckle.

[0008] Preferably, the top ends of the first high-voltage terminal and the second high-voltage terminal are respectively formed of a clamp-like structure by milling a copper silver-plated column, and the outer parts of the clamp-like structures of the first high-voltage terminal and the second high-voltage terminal are provided with a clamping ring.

[0009] Preferably, a core column is arranged inside the clamp-like structure of the first high-voltage terminal and the second high-voltage terminal, and an insulating terminal cap is installed at the end of the core column of the clamp-like structure of the first high-voltage terminal and the second high-voltage terminal.

[0010] Preferably, the diameters of the first high-voltage adapter column and the second high-voltage adapter column are larger than the diameters of the first control adapter column, the second control adapter column and the grounding terminal, and the diameters of the first high-voltage terminal and the second high-voltage terminal are larger than the diameters of the first control terminal, the second control terminal and the grounding terminal.

[0011] Preferably, the first high-voltage adapter post, the second high-voltage adapter post, the first control adapter post, the second control adapter post, the grounding terminal, the first high-voltage terminal, the second high-voltage terminal, the first control terminal, and the second control terminal are respectively sleeved with rubber rings, and a rubber sleeve is sleeved between the first end and the second end of the grounding terminal.

[0012] Preferably, the control module includes a thermal overcurrent self-resetting relay, and heat transfer cotton is arranged between the control module and the first connecting aluminum plate.

[0013] Preferably, a push rod and a spring are provided between the base and the shell, and the push rod elastically extends out of the top surface of the shell.

[0014] Preferably, a sealing ring is provided at the edge of the base, and the base and the shell are connected by a self-locking connecting rod and then sealed by ultrasonic welding.

[0015] Due to the adoption of the above technical solution, the DC fast charging converter for new energy vehicles of the utility model has the following advantages:

[0016] 1. Ultrasonic welding seal makes it waterproof and moisture-proof and improves insulation ability;

[0017] 2. The thermal overcurrent self-resetting relay module is used, which has the function of thermal overcurrent protection, making the product safer;

[0018] 3. Use silver-plated copper terminals to reduce high current impedance and prevent heating;

[0019] 4. The terminal adopts milling groove to contact with the electric vehicle charging socket in a clip-like manner to reduce contact resistance and prevent overheating;

[0020] 5. The product is assembled by self-locking (connecting rod), which improves the ability to resist falling and breaking;

[0021] 6. The overall plastic material uses flame retardant, high pressure resistant and other engineering plastics to improve the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1A perspective view of a DC fast charging converter for new energy vehicles according to the utility model;

[0023] Attached Figure 2 A bottom view of a DC fast charging converter for new energy vehicles according to the utility model;

[0024] Attached Figure 3 It is a three-dimensional disassembled diagram of a DC fast charging converter for new energy vehicles according to the utility model. Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Attached Figure 1 is a three-dimensional diagram of a DC fast charging converter for new energy vehicles according to the utility model, attached Figure 2 This is a bottom view of the DC fast charging converter for new energy vehicles according to the utility model, Figure 3The figure is a three-dimensional disassembled diagram of a DC fast-charging converter for new energy vehicles according to the utility model. This is a US standard and Tesla DC fast-charging converter, with a current of up to 200A and a voltage of 500V. It includes a base 1 and a shell 2 mounted on the base 1. The overall plastic material is flame-retardant, high-voltage resistant and other engineering plastics to meet the US UL standard to improve the safety factor. A sealing ring 18 is provided on the edge of the base 1. The base 1 and the shell 2 are connected by a self-locking connecting rod 19. The overall assembly is sealed by ultrasonic welding. The product is assembled by self-locking (connecting rod), which improves the ability to fall and break. The ultrasonic welding seal makes it waterproof and moisture-proof and improves the insulation ability; a top rod 6 and a spring 7 are provided between the base 1 and the shell 2. The top rod 6 elastically extends out of the top surface of the shell 2. A sealing ring 8 is provided around the installation position of the top rod 6 to ensure the sealing of the internal circuit.

[0029] The bottom surface of the base 1 is provided with a high-voltage input terminal 11 and a low-voltage input terminal 12. The high-voltage input terminal 11 is located at the front side of the base 1. The high-voltage input terminal 11 is provided with a first high-voltage transfer column 13 and a second high-voltage transfer column 14. The low-voltage input terminal 12 is located at the rear side of the base 1. The low-voltage input terminal 12 is provided with a first end of a first control transfer column 15, a second control transfer column 16 and a grounding terminal 17. The diameters of the first high-voltage transfer column 13 and the second high-voltage transfer column 14 are larger than the diameters of the first control transfer column 15, the second control transfer column 16 and the grounding terminal 17. The first high-voltage transfer column 13, the second high-voltage transfer column 14, the first control transfer column 15, the second control transfer column 16 and the grounding terminal 17 are respectively sleeved with rubber rings 4.

[0030] The top surface of the housing 2 is provided with an output terminal 21, which is located at the rear side of the housing 2. The output terminal 21 is provided with a first high-voltage terminal 22, a second high-voltage terminal 23, a first control terminal 24, a second control terminal 25 and the second end of the grounding terminal 17; the diameters of the first high-voltage terminal 22 and the second high-voltage terminal 23 are larger than the diameters of the first control terminal 24, the second control terminal 25 and the grounding terminal 17. A rubber ring 4 is sleeved on the first high-voltage terminal 22, the second high-voltage terminal 23, the first control terminal 24 and the second control terminal 25, respectively, and a rubber sleeve 5 is sleeved between the first end and the second end of the grounding terminal 17. The tops of the first high-voltage terminal 22 and the second high-voltage terminal 23 are respectively formed into a clip-like structure by milling grooves with red copper silver-plated columns. The red copper silver-plated terminal is used to reduce the impedance of large current and prevent heating. The terminal is milled in a way that the terminal contacts the electric vehicle charging socket in a clip-like manner to reduce the contact resistance and prevent overheating. The clamping structure of the first high-voltage terminal 22 and the second high-voltage terminal 23 is provided with a clamping ring 26 on the outside, and the clamping structure of the first high-voltage terminal 22 and the second high-voltage terminal 23 is provided with a core 27 on the inside. The ends of the core 27 of the clamping structure of the first high-voltage terminal 22 and the second high-voltage terminal 23 are provided with insulating terminal caps 28.

[0031] A first connecting aluminum plate 31 and a second connecting aluminum plate 32 are arranged between the base 1 and the housing 2. Positioning pieces 33 are arranged outside the first connecting aluminum plate 31 and the second connecting aluminum plate 32 so that the second connecting aluminum plate 32 is stacked on the top of the first connecting aluminum plate 31 in an interval and partially staggered manner. The first connecting aluminum plate 31 and the second connecting aluminum plate 32 are fixed on the base 1 from top to bottom by screws 10. The lower end of the first high-voltage terminal 22 extends downward to connect to the rear end of the first connecting aluminum plate 31, the lower end of the second high-voltage terminal 23 extends downward to connect to the rear end of the second connecting aluminum plate 32, the upper end of the first high-voltage transfer column 13 extends upward to connect to the front end of the first connecting aluminum plate 31, the upper end of the second high-voltage transfer column 14 extends upward to connect to the front end of the second connecting aluminum plate 32, and corresponding positions of the first connecting aluminum plate 31 and the second connecting aluminum plate 32 are provided with openings 34.

[0032] The control module 35 is installed on the base 1 by screws 9. The control module 35 adopts a thermal overcurrent self-resetting relay and has a thermal overcurrent protection function, making the product safer. The control module 35 is located below the first connecting aluminum plate 31, and a heat transfer cotton 36 is arranged between the control module 35 and the first connecting aluminum plate 31. The control module 35 has a first connecting hole 351 and a second connecting hole 352. The lower end of the first control terminal 24 passes through the opening 34 and is inserted into the first connecting hole 351. The lower end of the second control terminal 25 passes through the opening 34 and is inserted into the second connecting hole 352. The control module 35 has a third connecting hole 353 and a fourth connecting hole 354. The upper end of the first control adapter column 15 passes through the third connecting hole 353 and is connected to the buckle 37. The upper end of the second control terminal 16 passes through the fourth connecting hole 354 and is connected to the buckle 37.

[0033] 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 DC fast charging converter for new energy vehicles, characterized in that: include: A base (1), wherein a high-voltage input terminal (11) and a low-voltage input terminal (12) are disposed on the bottom surface of the base (1), wherein the high-voltage input terminal (11) is located at the front side of the base (1), wherein a first high-voltage transfer column (13) and a second high-voltage transfer column (14) are disposed inside the high-voltage input terminal (11), and wherein a first control transfer column (15), a second control transfer column (16) and a first end of a grounding terminal (17) are disposed inside the low-voltage input terminal (12); A housing (2) mounted on the base (1), the top surface of the housing (2) being provided with an output terminal (21), the output terminal (21) being located at the rear side of the housing (2), the output terminal (21) being provided with a first high-voltage terminal (22), a second high-voltage terminal (23), a first control terminal (24), a second control terminal (25) and a second end of a ground terminal (17); A first connecting aluminum plate (31) and a second connecting aluminum plate (32) are arranged between the base (1) and the housing (2); positioning plates (33) are arranged outside the first connecting aluminum plate (31) and the second connecting aluminum plate (32) so that the second connecting aluminum plate (32) is stacked on top of the first connecting aluminum plate (31) in an interval and partially staggered manner; the lower end of the first high-voltage terminal (22) extends downward to connect to the rear end of the first connecting aluminum plate (31); the lower end of the second high-voltage terminal (23) extends downward to connect to the rear end of the second connecting aluminum plate (32); the upper end of the first high-voltage adapter column (13) extends upward to connect to the front end of the first connecting aluminum plate (31); the upper end of the second high-voltage adapter column (14) extends upward to connect to the front end of the second connecting aluminum plate (32); a control module (35) is installed on the base (1); the control module (35) is located below the first connecting aluminum plate (31).

2. The new energy vehicle DC fast charging converter according to claim 1 is characterized in that: The first connecting aluminum plate (31) and the second connecting aluminum plate (32) are provided with openings (34) at corresponding positions. The control module (35) has a first connecting hole (351) and a second connecting hole (352). The lower end of the first control terminal (24) passes through the opening (34) and is inserted into the first connecting hole (351). The lower end of the second control terminal (25) passes through the opening (34) and is inserted into the second connecting hole (352). The control module (35) has a third connecting hole (353) and a fourth connecting hole (354). The upper end of the first control adapter column (15) is inserted into the third connecting hole (353), and the upper end of the second control adapter column (16) is inserted into the fourth connecting hole (354).

3. The new energy vehicle DC fast charging converter according to claim 2 is characterized in that: The upper end of the first control adapter column (15) passes through the third connection hole (353) and is connected to the buckle (37), and the upper end of the second control adapter column (16) passes through the fourth connection hole (354) and is connected to the buckle (37).

4. The new energy vehicle DC fast charging converter according to claim 1, characterized in that: The top ends of the first high-voltage terminal (22) and the second high-voltage terminal (23) are respectively formed of silver-plated copper columns through milling grooves to form a clamp-like structure, and the outsides of the clamp-like structures of the first high-voltage terminal (22) and the second high-voltage terminal (23) are provided with a clamping ring (26).

5. The new energy vehicle DC fast charging converter according to claim 4 is characterized in that: A core column (27) is arranged inside the clamp-like structure of the first high-voltage terminal (22) and the second high-voltage terminal (23), and an insulating terminal cap (28) is installed at the end of the core column (27) of the clamp-like structure of the first high-voltage terminal (22) and the second high-voltage terminal (23).

6. The new energy vehicle DC fast charging converter according to claim 1, characterized in that: The diameters of the first high-voltage adapter post (13) and the second high-voltage adapter post (14) are larger than the diameters of the first control adapter post (15), the second control adapter post (16) and the grounding terminal (17); the diameters of the first high-voltage terminal (22) and the second high-voltage terminal (23) are larger than the diameters of the first control terminal (24), the second control terminal (25) and the grounding terminal (17).

7. The new energy vehicle DC fast charging converter according to claim 1, characterized in that: The first high-voltage transfer post (13), the second high-voltage transfer post (14), the first control transfer post (15), the second control transfer post (16), the grounding terminal (17), the first high-voltage terminal (22), the second high-voltage terminal (23), the first control terminal (24), and the second control terminal (25) are respectively sleeved with rubber rings (4), and a rubber sleeve (5) is sleeved between the first end and the second end of the grounding terminal (17).

8. The new energy vehicle DC fast charging converter according to claim 1, characterized in that: The control module (35) comprises a thermal overcurrent self-resetting relay, and heat transfer cotton (36) is arranged between the control module (35) and the first connecting aluminum plate (31).

9. The new energy vehicle DC fast charging converter according to claim 1, characterized in that: A push rod (6) and a spring (7) are provided between the base (1) and the outer shell (2), and the push rod (6) elastically extends out of the top surface of the outer shell (2).

10. The new energy vehicle DC fast charging converter according to claim 1, characterized in that: A sealing ring (18) is provided on the edge of the base (1), and the base (1) and the housing (2) are connected via a self-locking connecting rod (19) and then sealed by ultrasonic welding.

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