Bidirectional AC / DC converter

Abstract

The utility model designs a bidirectional AC / DC converter, aiming at a converter body (4), a water-cooling heat dissipation and air-cooling heat dissipation integrated structure is designed, when the converter body (4) is subjected to AC charging with small heat productivity in daily life, a fan (9) in an air-cooling unit (8) is started, air is sucked from a dustproof net (10), and the heat dissipation is realized. When the converter body (4) is subjected to direct current charging with severe heating, the water cooling unit (7) is synchronously started, and a circulating curved pipe (18) in the water cooling plate (5) is matched, so that the rapid flowing operation of water cooling heat dissipation liquid is realized; therefore, the water cooling plate (5) can quickly dissipate heat on the upper surface and the lower surface of the converter body (4) to enhance operation, and the practicability of equipment design is embodied.

Description

Technical Field

[0001] The utility model relates to a bidirectional AC-DC converter, belonging to the technical field of converter equipment. Background Art

[0002] In addition to the main circuit, a converter also needs a trigger circuit for controlling the on-off of power switch elements and a control circuit for realizing the control of power regulation. The trigger circuit of the converter includes two parts: a pulse generator and a pulse outputter. The former generates pulses with a certain frequency, width or phase according to the requirements of control signals, and the latter amplifies the level of this pulse into a driving signal suitable for the power switch elements in the converter.

[0003] The prior art, such as the patent document with the publication number of CN 217216373 U, discloses a bidirectional AC-DC converter device, including a converter body. The converter body is composed of a power transistor bridge arm, a relay switching switch, an inductor capacitor and a controller. One end of the converter body is an AC-DC common interface AC_L / DC+, AC_N / DC-, and the other end of the converter body is a DC bus interface BUS+, BUS-. For AC-DC conversion, when the power is small, only two bridge arms of the converter need to work. When the power is large, all three bridge arms of the converter are working. For DC-DC conversion, when the power is small, only one bridge arm of the converter needs to work. When the power is large, two bridge arms of the converter are working. During the whole operation process, interleaved parallel connection between bridge arms is realized through the logic control of the controller, so as to improve the power and charge-discharge speed, reduce the capacitor ripple current, improve the heat dissipation of power devices, thereby improving the efficiency and power density, and reducing the volume and cost.

[0004] However, in the actual process of this structure, only simple overall external heat dissipation operations can be carried out. However, when the bidirectional AC-DC converter performs charge-discharge operations with different powers, the heat generated inside the device is different, resulting in the inability of the heat dissipation device to perform low-power adaptive auxiliary heat dissipation operations. At the same time, the overall bidirectional AC-DC converter cannot perform quick disassembly and maintenance operations in daily life, which cannot meet the daily use requirements. Therefore, it is urgent to design a bidirectional AC-DC converter to solve the above problems. Summary of the Invention

[0005] The purpose of the utility model is to provide a bidirectional AC-DC converter, which solves the deficiencies of the existing structure mentioned in the above background art and realizes efficient heat dissipation.

[0006] The utility model adopts the following technical solutions to solve the above technical problems: The utility model designs a bidirectional AC-DC converter, which includes a converter body, a water-cooling unit, and two water-cooling plates. Among them, each water-cooling plate is internally provided with a circulating curved pipe, and a shunt pipe orifice composed of a water inlet and a water outlet is arranged on the side surface of each water-cooling plate. The two ends of the internal circulating curved pipe are respectively butted against the water inlet and the water outlet on the side surface of each water-cooling plate, forming a communication pipeline from the water inlet through the circulating curved pipe to the water outlet.

[0007] The two water-cooling plates are respectively arranged in contact with the upper and lower surfaces of the converter body. The output ends of the water-cooling unit are respectively butted against the water inlets in the shunt pipe orifices on each water-cooling plate, and the water outlets in the shunt pipe orifices on each water-cooling plate are respectively butted against the input ends of the water-cooling unit.

[0008] As a preferred technical solution of the utility model: It further includes a clamping frame and an air-cooling unit. A contact socket for connecting the internal circuit structure of the converter body is arranged on one side surface of the converter body, and the external connection of the internal circuit structure of the converter body is realized through the contact socket. The clamping frame is a semi-surrounding structure in a top view. A preset distance is formed between the inner surface and the outer surface of the clamping frame to form an internal cavity. The inner surface of the clamping frame surrounds and contacts the other side surfaces of the converter body except the side surface where the contact socket is arranged. Ventilation grilles are respectively arranged on the semi-surrounding top surface, semi-surrounding bottom surface, and inner wall of the clamping frame. The ventilation grilles at each position are communicated through the internal cavity. The output direction of the air-cooling unit points to the ventilation grilles arranged on the clamping frame, and based on the operation of the air-cooling unit, a flowing air current is formed in the internal cavity of the clamping frame.

[0009] As a preferred technical solution of the utility model: At least one wiring port that penetrates the inner and outer sides of the clamping frame and communicates with the inside of the converter body is arranged on the side surface of the clamping frame for connecting an external line to the internal circuit structure of the converter body.

[0010] As a preferred technical solution of the present utility model: it further includes a control unit, the control unit includes a first cube, a contact interface, and two water pipes built in the first cube. The contact interface is arranged through two opposite surfaces of the first cube. The surface of the first cube is provided with a water inlet, a water return port, and two partition circulation valves. Each partition circulation valve respectively includes an inlet and a return port that are isolated from each other. The water inlet on the surface of the first cube is sequentially connected to the inlets in each partition circulation valve through one of the water pipes inside. The water return port on the surface of the first cube is sequentially connected to the return ports in each partition circulation valve through the other water pipe inside. The contact interface on the surface of the first cube is connected to the contact socket on the side of the converter body, and the external connection of the internal circuit structure of the converter body is realized through the contact interface. The water inlet on the surface of the first cube is connected to the output end of the water cooling unit, the water return port on the surface of the first cube is connected to the input end of the water cooling unit, and each partition circulation valve on the surface of the first cube is respectively connected to the shunt pipe orifices on the sides of each water cooling plate in a one-to-one correspondence. Among them, the inlet in the partition circulation valve is connected to the water inlet in the connected shunt pipe orifice, and the return port in the partition circulation valve is connected to the water outlet in the connected shunt pipe orifice.

[0011] As a preferred technical solution of the present utility model: based on defining the end of the contact interface corresponding to one surface of the first cube where it is set as the access end, and defining the end of the contact interface corresponding to the other surface of the first cube where it is set as the external connection end; the water inlet and the water return port are arranged on the surface of the first cube where the access end of the contact interface is not set, and the two partition circulation valves are located on the surface of the first cube where the access end of the contact interface is set; based on the position settings of the two water cooling plates and the converter body, the shunt pipe orifices on the sides of each water cooling plate and the contact socket on the side of the converter body are located on the same side, and the access end of the contact interface on the first cube and each partition circulation valve are respectively directly connected to the contact socket on the side of the converter body and the shunt pipe orifices on the sides of each water cooling plate.

[0012] As a preferred technical solution of the present utility model: it further includes a pipe connection seat, and the output end and the input end of the water cooling unit are respectively connected to the water inlet and the water return port on the surface of the first cube in the control unit through the pipe connection seat.

[0013] As a preferred technical solution of the present utility model: it further includes a C-shaped clamping frame. The side view of the C-shaped clamping frame is a C-shaped structure including a top structure, a side structure, and a bottom structure connected in sequence. A cavity is respectively formed at a preset distance between the upper surface and the lower surface of the top structure and between the upper surface and the lower surface of the bottom structure; a window penetrating both of its two surfaces is provided on the side structure; based on the inner surface of the clamping frame surrounding and contacting other sides of the converter body except the side where the contact socket is set, the upper surface of the water cooling plate contacted by the upper surface of the converter body is flush with the semi-surrounding top surface of the clamping frame, and the lower surface of the water cooling plate contacted by the lower surface of the converter body is flush with the semi-surrounding bottom surface of the clamping frame.

[0014] Based on the overall structure composed of the converter body, the clamping frame, and two water-cooled plates, the overall structure is moved into the space between the top structure and the bottom structure of the C-shaped clamping frame with the surface where its contact socket is located facing the opening direction of the C-shaped clamping frame, and both the contact socket and the shunt pipe orifice pass through the windows on the side structure of the C-shaped clamping frame.

[0015] On the lower surface of the top structure of the C-shaped clamping frame, ventilation grilles communicating with its inner cavity are provided corresponding to the positions of the semi-surrounding top ventilation grilles of the clamping frame. On the upper surface of the bottom structure of the C-shaped clamping frame, ventilation grilles communicating with its inner cavity are provided corresponding to the positions of the semi-surrounding bottom ventilation grilles of the clamping frame. Ventilation grilles communicating with their inner cavities are respectively provided on the upper surface of the top structure and the lower surface of the bottom structure of the C-shaped clamping frame. The output direction of the air-cooling unit points to the ventilation grille on the upper surface of the top structure of the C-shaped clamping frame or to the ventilation grille on the lower surface of the bottom structure of the C-shaped clamping frame.

[0016] As a preferred technical solution of the present utility model: The shape and size of the overall structure composed of the clamping frame, the converter body, and two water-cooled plates are adapted to the space size between the top structure and the bottom structure of the C-shaped clamping frame.

[0017] As a preferred technical solution of the present utility model: The air-cooling unit includes a second cube with an internal cavity and at least one fan. Through holes communicating with the internal cavity are provided at the top of the second cube. The number of through holes is equal to the number of fans. Each fan is respectively arranged in each through hole. A dust-proof net communicating with the internal cavity is provided on the side of the second cube. The top of the air-cooling unit is butted against the lower surface of the bottom structure in the C-shaped clamping frame. Based on the operation of each fan, air enters through the dust-proof net and is output after passing through the internal cavity of the second cube, the cavity in the bottom structure of the C-shaped clamping frame, the internal cavity of the clamping frame, and the cavity in the top structure of the C-shaped clamping frame in sequence.

[0018] As a preferred technical solution of the present utility model: It further includes a mounting plate. The mounting plate is arranged on the outer side surface of the clamping frame opposite to the position of the contact socket. Based on defining the direction perpendicular to the distance between the top structure and the bottom structure in the C-shaped clamping frame as the reference direction, grooves are respectively provided on both sides of the mounting plate along the reference direction.

[0019] Compared with the prior art by adopting the above technical solutions, the bidirectional AC-DC converter of the present utility model has the following technical effects:

[0020] The utility model designs a bidirectional AC-DC converter. Through the provided mounting plate, clamping frame, wiring ports, converter body, water-cooling plate, water-cooling unit, air-cooling unit, fan, dust-proof net, connection pipe seat, ventilation grille, shunt pipe orifice and circulation curved pipe, a rapid heat dissipation operation adaptable to the converter body inside the clamping frame is carried out. That is, first, the external wiring is connected to the wiring ports at both ends of the clamping frame. Then, when the converter body performs AC charging with low heat generation during daily use, only the fan inside the air-cooling unit can be started to suck air from the dust-proof net, and then the heat dissipation air flow blows upward from bottom to top along the ventilation grille of the clamping frame to continuously dissipate heat from the side of the converter body. At the same time, when the converter body performs DC charging with severe heat generation, the water-cooling unit can be started synchronously. The heat dissipation liquid is injected from the control unit to the shunt pipe orifice of the water-cooling plate through the connection pipe seat and the partition circulation valve, and in cooperation with the circulation curved pipe inside the water-cooling plate, a rapid flow operation of the water-cooling heat dissipation liquid is realized, so that the water-cooling plate rapidly enhances heat dissipation at the upper and lower ends of the converter body, reflecting the practicability of the equipment design;

[0021] The utility model designs a bidirectional AC-DC converter to further improve the overall use effect of the equipment. During daily use, the two water-cooling plates stably dock with the upper and lower surfaces of the converter body for heat dissipation. The staff can perform a limit plugging operation by inserting the clamping frame on the back of the mounting plate into the inside of the C-shaped clamping frame. The contact socket on the back of the converter body can be adaptively docked with the contact interface of the control unit to efficiently transmit the working data at the converter body, realizing the adaptive adjustment of air cooling and water cooling. Subsequently, when a fault occurs inside the converter body, the separation, disassembly and maintenance operation between the converter body and the heat dissipation equipment can be carried out immediately, reflecting the comprehensiveness of the equipment design. Brief Description of the Drawings

[0022] Figure 1 is a three-dimensional schematic diagram of the structure of the utility model;

[0023] Figure 2 is a partial view schematic diagram of the structure of the mounting plate of the utility model;

[0024] Figure 3 is an overall schematic diagram of the structure of the air-cooling unit of the utility model;

[0025] Figure 4 is an overall schematic diagram of the structure of the control unit of the utility model.

[0026] Among them: 1. Mounting plate; 2. Snap-on frame; 3. Wiring port; 4. Converter body; 5. Water-cooled plate; 6. C-type snap-on frame; 7. Water-cooled unit; 8. Air-cooled unit; 9. Fan; 10. Dust screen; 11. Pipe connection socket; 12. Control unit; 13. Separation circulation valve; 14. Contact interface; 15. Contact socket; 16. Ventilation grille; 17. Diverter pipe port; 18. Circulation curved pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model designs a bidirectional AC / DC converter. In practical applications, such as Figure 1 and Figure 2 As shown, the specific design includes a converter body 4, a water cooling unit 7, and two water cooling plates 5, wherein each water cooling plate 5 is respectively provided with a built-in circulating curved pipe 18, and a shunt pipe opening 17 consisting of a water inlet and a water outlet is arranged on the side of each water cooling plate 5, and the water inlet and the water outlet on the side of each water cooling plate 5 are respectively connected to the two ends of the internal circulating curved pipe 18, forming a connecting pipeline from the water inlet through the circulating curved pipe 18 to the water outlet; the two water cooling plates 5 are respectively arranged to contact the upper and lower surfaces of the converter body 4, and the output end of the water cooling unit 7 is respectively connected to the water inlet in the shunt pipe opening 17 on each water cooling plate 5, and the water outlet in the shunt pipe opening 17 on each water cooling plate 5 is respectively connected to the input end of the water cooling unit 7.

[0029] The above is the water cooling solution proposed by the utility model for the converter body 4. In practical applications, an air cooling solution will be further proposed on this basis, that is, Figure 1 As shown, the specific design also includes a snap-on frame 2 and an air-cooling unit 8, one side of the converter body 4 is provided with a contact socket 15 connected to the internal circuit structure of the converter body 4, and the contact socket 15 realizes the external connection of the internal circuit structure of the converter body 4; the snap-on frame 2 is a semi-enclosed structure when viewed from above, and an internal cavity is formed between the inner surface and the outer surface of the snap-on frame 2 at a preset distance, and the inner surface of the snap-on frame 2 surrounds the other side surfaces of the contact converter body 4 except the side surface where the contact socket 15 is provided, and ventilation grilles 16 are respectively provided on the semi-enclosed top surface, the semi-enclosed bottom surface, and the inner wall of the snap-on frame 2, and the ventilation grilles 16 at various positions are connected through the internal cavity, and the output direction of the air-cooling unit 8 points to the ventilation grille 16 provided on the snap-on frame 2. Based on the operation of the air-cooling unit 8, a flowing airflow is formed in the internal cavity of the snap-on frame 2.

[0030] In the design and application of the above snap - fit frame 2, as Figure 1 shown, at least one wiring port 3 that penetrates the inner and outer sides of the snap - fit frame 2 and communicates with the inside of the converter body 4 is further designed on the side of the snap - fit frame 2 for external lines to be connected to the internal circuit structure of the converter body 4.

[0031] Regarding the connections between the input end and the output end of the water - cooled unit 7 and the shunt nozzles 17 on each water - cooled plate 5 respectively, and the external connection of the internal circuit structure of the converter body 4 realized by the contact socket 15 on the converter body 4 in the above design scheme, in actual application, a control unit 12 is introduced, as Figure 4 shown. Specifically, the designed control unit 12 includes a first cube, a contact interface 14, and two water pipes built into the first cube. The contact interface 14 is arranged through two opposite surfaces of the first cube. The surface of the first cube is provided with a water inlet, a water return port, and two partition circulation valves 13. Each partition circulation valve 13 respectively includes an inlet and a return port that are isolated from each other. The water inlet on the surface of the first cube is connected to the inlets in each partition circulation valve 13 in sequence through one of the water pipes inside. The water return port on the surface of the first cube is connected to the return ports in each partition circulation valve 13 in sequence through the other water pipe inside. The contact interface 14 on the surface of the first cube is connected to the contact socket 15 on the side of the converter body 4, and the external connection of the internal circuit structure of the converter body 4 is realized by the contact interface 14. In application, the data of the operation of the converter body 4 is efficiently transmitted. The water inlet on the surface of the first cube is connected to the output end of the water - cooled unit 7, the water return port on the surface of the first cube is connected to the input end of the water - cooled unit 7, and each partition circulation valve 13 on the surface of the first cube is respectively connected to the shunt nozzles 17 on the side of each water - cooled plate 5 in a one - to - one correspondence. Among them, the inlet in the partition circulation valve 13 is connected to the water inlet in the connected shunt nozzle 17, and the return port in the partition circulation valve 13 is connected to the water outlet in the connected shunt nozzle 17.

[0032] In the actual application of the above - introduced control unit 12, in order to improve the convenience of the connection between the control unit 12 and the shunt nozzles 17 on each water - cooled plate 5 and the contact socket 15 on the converter body 4 respectively, and the neatness of the connection layout, further optimization design is carried out, as Figure 2As shown in the figure, based on the definition that the end of the first cube corresponding to one surface of the contact interface 14 is the access end, and the end of the first cube corresponding to the other surface of the contact interface 14 is the external connection end; a water inlet and a water return port are arranged on the surface of the first cube where the access end of the contact interface 14 is not provided, and two partition circulation valves 13 are located on the surface of the first cube where the access end of the contact interface 14 is provided; based on the positions of the two water cooling plates 5 and the converter body 4, the flow splitting pipe orifices 17 on the side surfaces of each water cooling plate 5 and the contact socket 15 on the side surface of the converter body 4 are located on the same side. The access end of the contact interface 14 on the first cube and each partition circulation valve 13 are directly docked with the contact socket 15 on the side surface of the converter body 4 and the flow splitting pipe orifices 17 on the side surfaces of each water cooling plate 5 respectively.

[0033] Based on the above design implementation of the introduced control unit 12, as Figure 1 shown in the figure, a connection pipe seat 11 can be further designed and added. The output end and the input end of the water cooling unit 7 are respectively docked with the water inlet and the water return port on the surface of the first cube in the control unit 12 through the connection pipe seat 11.

[0034] The above technical solution integrates the converter body 4, the water cooling unit 7, the clamping frame 2, the air cooling unit 8, the control unit 12, and the two water cooling plates 5. In actual application, on the basis that the flow splitting pipe orifices 17 on the side surfaces of each water cooling plate 5 and the contact socket 15 on the side surface of the converter body 4 are located on the same side, the design of a C-shaped clamping frame 6 is further added. Specifically, the side view of the C-shaped clamping frame 6 is a C-shaped structure including a top layer structure, a side structure, and a bottom layer structure connected in sequence. A cavity is formed at a preset distance between the upper surface and the lower surface of the top layer structure and between the upper surface and the lower surface of the bottom layer structure respectively; a window penetrating both sides of the side structure is provided on the side structure; based on the inner surface of the clamping frame 2 surrounding and contacting other side surfaces of the converter body 4 except the side surface where the contact socket 15 is provided, the upper surface of the water cooling plate 5 contacted by the upper surface of the converter body 4 is flush with the semi-surrounding top surface of the clamping frame 2, and the lower surface of the water cooling plate 5 contacted by the lower surface of the converter body 4 is flush with the semi-surrounding bottom surface of the clamping frame 2.

[0035] Based on the overall structure formed by the converter body 4, the clamping frame 2, and the two water cooling plates 5, the overall structure is moved into the space between the top layer structure and the bottom layer structure of the C-shaped clamping frame 6 with the surface where the contact socket 15 is located facing the opening direction of the C-shaped clamping frame 6, and both the contact socket 15 and the flow splitting pipe orifice 17 pass through the window on the side structure of the C-shaped clamping frame 6.

[0036] A ventilation grille 16 connected to the inner cavity is arranged on the lower surface of the top structure of the C-type clip-on frame 6, corresponding to the position of the ventilation grille 16 on the top surface half-enclosed by the clip-on frame 2; a ventilation grille 16 connected to the inner cavity is arranged on the upper surface of the bottom structure of the C-type clip-on frame 6, corresponding to the position of the ventilation grille 16 on the bottom surface half-enclosed by the clip-on frame 2; ventilation grilles 16 connected to the inner cavity are arranged on the upper surface and the lower surface of the top structure and the lower surface of the bottom structure of the C-type clip-on frame 6 respectively; the output direction of the air cooling unit 8 points to the ventilation grille 16 on the upper surface of the top structure of the C-type clip-on frame 6, or to the ventilation grille 16 on the lower surface of the bottom structure of the C-type clip-on frame 6.

[0037] In further practical applications, the above-mentioned C-type clamping frame 6 can be further designed so that the shape and size of the overall structure composed of the clamping frame 2, the converter body 4, and the two water-cooling plates 5 are adapted to the space size between the top structure and the bottom structure in the C-type clamping frame 6, that is, the overall structure can realize the clamping plug-in operation relative to the C-type clamping frame 6, and when the overall structure is inserted into the C-type clamping frame 6, the C-type clamping frame 6 limits and fixes the positions of the clamping frame 2, the converter body 4, and the two water-cooling plates 5 to enhance the stability of the structure. After the overall structure is inserted into the C-type clip frame 6, the control unit 12 is quickly connected to the contact socket 15 on the side of the inverter body 4 and the shunt pipe openings 17 on the side of each water-cooling plate 5. Under the structure of the C-type clip frame 6, each inverter body 4 can be flexibly and conveniently replaced for application. Different inverter bodies 4 only need to form an overall structure with the clip frame 2 and two water-cooling plates 5, and can be quickly inserted into the C-type clip frame 6, and quickly docked with the control unit 12, thereby efficiently connecting to the water-cooling unit 7 and realizing external connection of the circuit structure.

[0038] With the C-type card bracket 6 design and application, the efficient application of the converter body 4 is further designed for the air-cooled unit 8, such as Figure 3 As shown, it specifically includes a second cube with a built-in cavity, and at least one fan 9. The top of the second cube is provided with various vias connected to the internal cavity, and the number of the vias is equal to the number of the fans 9. The fans 9 are respectively arranged in each via hole, and a dust net 10 connected to the internal cavity is provided on the side of the second cube.

[0039] In the actual application under the specific structural design of the air-cooled unit 8, the top of the air-cooled unit 8 is butted against the lower surface of the bottom structure in the C-shaped clamping frame 6. Based on the operation of each fan 9, air enters through the dust-proof net 10 and is output after passing through the inner cavity of the second cube, the cavity in the bottom structure of the C-shaped clamping frame 6, the inner cavity of the clamping frame 2, and the cavity in the top structure of the C-shaped clamping frame 6 in sequence. At the same time, the water-cooled unit 7 is placed on the upper surface of the top structure in the C-shaped clamping frame 6. In this way, the structural design of the C-shaped clamping frame 6 in combination with the air-cooled unit 8 and the water-cooled unit 7 truly realizes convenient operation in actual application. By replacing any converter body 4 and cooperating with the clamping frame 2 and two water-cooled plates 5 to form an integral structure, it can be quickly inserted into the C-shaped clamping frame 6 for application, achieving modular application.

[0040] In actual implementation and application, such as Figure 1 and Figure 2 shown, an installation plate 1 can be further designed and added. The installation plate 1 is arranged on the outer side surface of the clamping frame 2 opposite to the position of the contact socket 15. Based on the direction perpendicular to the distance between the top structure and the bottom structure in the C-shaped clamping frame 6 as the reference direction, grooves are respectively arranged on both sides of the installation plate 1 along the reference direction. That is, the grooves are used for the grasping of two fingers. In application, by grasping the grooves on both sides of the installation plate 1 with two fingers, the quick insertion and extraction of the converter body 4, the clamping frame 2, and two water-cooled plates 5 with respect to the C-shaped clamping frame 6 can be realized.

[0041] The above-designed bidirectional AC / DC converter is applied in practice. When in use, the user first connects the external wiring to the wiring ports 3 at both ends of the clip frame 2. Then, when the converter body 4 is performing daily AC charging with low heat generation, only the fan 9 inside the air cooling unit 8 can be started to suck air from the dustproof net 10. Then the heat dissipation airflow passes through the internal cavity of the second cube, the cavity in the bottom structure of the C-type clip frame 6, the internal cavity of the clip frame 2, and the cavity in the top structure of the C-type clip frame 6 in turn, and then is output from the side of the converter body 4 for continuous heat dissipation. At the same time, when the converter body 4 is performing DC charging with severe heat generation, the water cooling unit 7 can be started synchronously, and the water cooling unit 7 will use the connecting pipe seat 11 to transfer the heat dissipation liquid to the two water-cooled plates 5 through the two separation circulation valves 13 on the control unit 12. The injection operation is performed at the pipe mouth 17, and the circulation curved pipe 18 inside the water-cooled plate 5 is coordinated to realize the rapid flow operation of the water-cooled heat dissipation liquid, so that the water-cooled plate 5 can perform a rapid heat dissipation enhancement operation on the upper and lower surfaces of the inverter body 4. In the daily use process, the staff can use the mounting plate 1 to connect the clamping frame 2, the inverter body 4, and the overall structure composed of the two water-cooled plates 5 to the inside of the C-type clamping frame 6 to perform a limited plug-in operation. At the same time, the contact socket 15 on the back of the inverter body 4 can be adaptively connected to the contact interface 14 of the control unit 12, and the working data of the inverter body 4 can be efficiently transmitted to realize the adaptive adjustment of air cooling and water cooling. When a fault occurs inside the inverter body 4, the separation, disassembly and maintenance operation between the inverter body 4 and the heat dissipation device can be carried out as soon as possible.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bidirectional AC / DC converter, characterized in that: The invention comprises a converter body (4), a water cooling unit (7), and two water cooling plates (5), wherein each water cooling plate (5) has a built-in circulating curved pipe (18), and a side of each water cooling plate (5) is provided with a branch pipe opening (17) composed of a water inlet and a water outlet, and the water inlet and the water outlet on the side of each water cooling plate (5) are respectively connected to the two ends of the internal circulating curved pipe (18), so as to form a connecting pipe from the water inlet through the circulating curved pipe (18) to the water outlet; The two water cooling plates (5) are respectively arranged to contact the upper and lower surfaces of the converter body (4); the output end of the water cooling unit (7) is respectively connected to the water inlet in the flow dividing pipe opening (17) on each water cooling plate (5); and the water outlet in the flow dividing pipe opening (17) on each water cooling plate (5) is respectively connected to the input end of the water cooling unit (7); It also includes a snap-on frame (2) and an air-cooling unit (8); a contact socket (15) connected to the internal circuit structure of the converter body (4) is arranged on one side of the converter body (4); the contact socket (15) realizes the external connection of the internal circuit structure of the converter body (4); the snap-on frame (2) is a semi-enclosed structure in a top view; the inner surface and the outer surface of the snap-on frame (2) are spaced a preset distance apart to form an internal cavity; the inner surface of the snap-on frame (2) surrounds the other side surfaces of the converter body (4) except the side surface where the contact socket (15) is arranged; ventilation grilles (16) are respectively arranged on the semi-enclosed top surface, the semi-enclosed bottom surface, and the inner wall of the snap-on frame (2); the ventilation grilles (16) at various positions are connected via the internal cavity; the output direction of the air-cooling unit (8) points to the ventilation grilles (16) arranged on the snap-on frame (2); based on the operation of the air-cooling unit (8), a flowing airflow is formed in the internal cavity of the snap-on frame (2); At least one wiring port (3) is provided on the side of the clamping frame (2), which passes through the inside and outside of the frame and is connected to the inside of the converter body (4), and is used to connect an external line to the internal circuit structure of the converter body (4); The control unit (12) further comprises a control unit (12), the control unit (12) comprising a first cube, a contact interface (14), and two water pipes built into the first cube, the contact interface (14) being arranged on two opposite sides of the first cube, a water inlet, a water return port, and two partition circulation valves (13) being arranged on the surface of the first cube, each partition circulation valve (13) comprising an inlet and a return port isolated from each other, the water inlet on the surface of the first cube being connected in sequence to the inlet of each partition circulation valve (13) via one of the internal water pipes, and the water return port on the surface of the first cube being connected in sequence to the return port of each partition circulation valve (13) via another internal water pipe; the first cube The contact interface (14) on the surface is connected to the contact socket (15) on the side of the converter body (4), and the contact interface (14) realizes the external connection of the internal circuit structure of the converter body (4); the water inlet on the surface of the first cube is connected to the output end of the water cooling unit (7), and the water return port on the surface of the first cube is connected to the input end of the water cooling unit (7); each of the partition circulation valves (13) on the surface of the first cube is connected to the shunt pipe port (17) on the side of each water cooling plate (5) one by one, wherein the inlet in the partition circulation valve (13) is connected to the water inlet in the connected shunt pipe port (17), and the return port in the partition circulation valve (13) is connected to the water outlet in the connected shunt pipe port (17).

2. A bidirectional AC / DC converter according to claim 1, characterized in that: Based on defining the end of the contact interface (14) corresponding to one of the surfaces of the first cube on which it is provided as the access end, defining the end of the contact interface (14) corresponding to the other surface of the first cube on which it is provided as the external connection end; a water inlet and a water return port are provided on the surface provided on the access end of the non-contact interface (14) on the first cube, and two separation circulation valves (13) are located on the surface provided on the access end of the contact interface (14) on the first cube; based on the position setting of the two water cooling plates (5) and the converter body (4), the shunt pipe openings (17) on the side of each water cooling plate (5) and the contact sockets (15) on the side of the converter body (4) are located on the same side, and the access end of the contact interface (14) on the first cube and each separation circulation valve (13) are directly connected to the contact sockets (15) on the side of the converter body (4) and the shunt pipe openings (17) on the side of each water cooling plate (5), respectively.

3. A bidirectional AC / DC converter according to claim 1 or 2, characterized in that: It also includes a connecting socket (11), through which the output end and the input end of the water cooling unit (7) are respectively connected to the water inlet and the water return port on the surface of the first cube in the control unit (12) through the connecting socket (11).

4. A bidirectional AC / DC converter according to claim 2, characterized in that: It also includes a C-type clamping frame (6), which, when viewed from the side, is a C-shaped structure including a top structure, a side structure, and a bottom structure connected in sequence, wherein a cavity is formed between the upper surface and the lower surface of the top structure and between the upper surface and the lower surface of the bottom structure at a preset distance; a window is provided on the side structure that passes through both sides thereof; based on the inner surface of the clamping frame (2) surrounding the contact converter body (4) with respect to all other side surfaces except the side surface provided with the contact socket (15), the upper surface of the water cooling plate (5) contacted by the upper surface of the converter body (4) is flush with the semi-enclosed top surface of the clamping frame (2), and the lower surface of the water cooling plate (5) contacted by the lower surface of the converter body (4) is flush with the semi-enclosed bottom surface of the clamping frame (2); Based on the overall structure composed of the converter body (4), the clamping frame (2), and the two water-cooling plates (5), the overall structure is moved into between the top structure and the bottom structure of the C-type clamping frame (6) with the surface where the contact socket (15) is located facing the opening of the C-type clamping frame (6), and the contact socket (15) and the diversion pipe opening (17) pass through the windows on the middle side structure of the C-type clamping frame (6); A ventilation grille (16) communicating with the inner cavity is arranged at a position on the lower surface of the top structure of the C-type clamping frame (6) corresponding to the ventilation grille (16) on the semi-enclosed top surface of the clamping frame (2); a ventilation grille (16) communicating with the inner cavity is arranged at a position on the upper surface of the bottom structure of the C-type clamping frame (6) corresponding to the ventilation grille (16) on the semi-enclosed bottom surface of the clamping frame (2); ventilation grilles (16) communicating with the inner cavity are arranged on the upper surface and the lower surface of the bottom structure of the C-type clamping frame (6); and the output direction of the air cooling unit (8) points to the ventilation grille (16) on the upper surface of the top structure of the C-type clamping frame (6) or to the ventilation grille (16) on the lower surface of the bottom structure of the C-type clamping frame (6).

5. A bidirectional AC / DC converter according to claim 4, characterized in that: The shape and size of the overall structure formed by the clamping frame (2), the converter body (4), and the two water-cooling plates (5) are adapted to the spatial size between the top structure and the bottom structure in the C-shaped clamping frame (6).

6. A bidirectional AC / DC converter according to claim 4, characterized in that: The air-cooling unit (8) comprises a second cube with a built-in cavity, and at least one fan (9); the top of the second cube is provided with various through holes connected to the internal cavity, the number of the through holes is equal to the number of the fans (9), and the fans (9) are respectively arranged in the various through holes; the side of the second cube is provided with a dust screen (10) connected to the internal cavity; the top of the air-cooling unit (8) is connected to the lower surface of the bottom structure of the C-type clip frame (6), based on the operation of each fan (9), air is taken in through the dust screen (10), and is outputted after passing through the internal cavity of the second cube, the cavity of the bottom structure of the C-type clip frame (6), the internal cavity of the clip frame (2), and the cavity of the top structure of the C-type clip frame (6) in sequence.

7. A bidirectional AC / DC converter according to claim 4 or 5, characterized in that: It also includes a mounting plate (1), which is arranged on the outer side surface of the clamping frame (2) opposite to the contact socket (15), and based on the direction perpendicular to the distance between the top structure and the bottom structure in the C-shaped clamping frame (6) being defined as the reference direction, grooves are respectively arranged on both side edges of the mounting plate (1) along the reference direction.

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