Charger

Abstract

The utility model discloses a charger, which comprises a liquid cooling machine and a host machine, the liquid cooling machine and the host machine are respectively arranged in an upper cavity and a lower cavity, the liquid cooling machine comprises a liquid cooling machine water tank, liquid cooling machine radiating fins, a fan and a liquid cooling machine water outlet pipe, and a water inlet of the liquid cooling machine water tank is connected with water outlets of the liquid cooling machine radiating fins through a pipeline. A water outlet of the liquid cooling machine water tank is connected with a first end of a liquid cooling machine water outlet pipe, the liquid cooling machine water outlet pipe extends into the periphery of the AC / DC power conversion unit in the host through a through hole formed in the partition plate, a second end of the liquid cooling machine water outlet pipe is a liquid cooling machine water inlet pipe, and the liquid cooling machine water inlet pipe is connected with water inlets of the liquid cooling machine cooling fins. Heat exchange in the operation process of the cabinet is effectively reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of charger structure design technology, and specifically relates to a charger. Background Technology

[0002] With the development of electric vehicles, charging stations have also experienced explosive growth. Nationwide, the construction and installation of charging stations are being encouraged and supported to meet the charging needs of electric vehicles. When purchasing charging stations, factors such as charging speed, appearance design, component layout, footprint, price, and ease of use directly impact their market share.

[0003] Existing chargers use air-cooling technology for heat dissipation. This works by placing dustproof cotton at the air inlet to prevent external moisture from entering the cabinet, ensuring safe operation of the equipment. Multiple fans are installed at the rear door of the cabinet. These fans use strong suction to guide air entering from the front door out of the cabinet, creating a continuous airflow for heat dissipation. However, this cooling method generates significant noise during fan operation. Furthermore, when multiple fans operate simultaneously, this noise amplifies, further increasing the overall noise level and impacting the surrounding environment. Summary of the Invention

[0004] This invention provides a charger that effectively reduces the noise generated during heat dissipation in the cabinet during operation.

[0005] To achieve the above objectives, the present invention provides a charger comprising a liquid cooler and a main unit, wherein the liquid cooler and the main unit are respectively located in an upper cavity and a lower cavity, the upper cavity and the lower cavity being separated by a partition. The liquid cooler includes liquid cooler heat dissipation fins, a fan, and a liquid cooler water outlet pipe. The water inlet of the liquid cooler heat dissipation fins is connected to the first end of the liquid cooler water inlet pipe, and the water outlet is connected to the first end of the liquid cooler water outlet pipe. The second end of the liquid cooler water outlet pipe passes through the partition and is connected to the first end of the liquid cooling pipe in the AC / DC power conversion unit. The second end of the liquid cooling pipe is connected to the second end of the liquid cooler water inlet pipe.

[0006] Furthermore, a liquid chiller water tank is provided between the liquid chiller water inlet pipe and the liquid chiller heat dissipation fins, and both the liquid chiller water inlet pipe and the liquid chiller heat dissipation fins are connected to the liquid chiller water tank.

[0007] Furthermore, the liquid cooler water tank, liquid cooler heat dissipation fins, and fan are arranged sequentially from back to front.

[0008] Furthermore, the host includes an AC / DC power conversion unit, a distribution unit contactor, a contactor connecting copper busbar, an output cable, an input cable, a molded case circuit breaker, and an AC contactor. The AC / DC power conversion unit is located in the upper space of the lower cavity. The distribution unit contactor, the contactor connecting copper busbar, and the output cable are arranged sequentially from top to bottom on the lower left side of the lower cavity, while the AC contactor, the molded case circuit breaker, and the input cable are arranged sequentially from top to bottom on the lower right side of the lower cavity.

[0009] Furthermore, a module DC output terminal block is provided on the upper rear side of the AC / DC power conversion unit, and a module AC input terminal block is provided on the lower rear side.

[0010] Furthermore, the lower cavity is rotatably equipped with a left front door for the charging host and a right front door for the charging cabinet at its front end, and a left rear door for the charging host and a right rear door for the charging host cabinet at its rear end.

[0011] Furthermore, a 12V power supply, a central control box assembly, a fan control board, and a CMU control board are installed on the inner side wall of the left front door of the charging host.

[0012] Furthermore, the side wall of the upper cavity is provided with heat dissipation holes.

[0013] Furthermore, an emergency stop button is installed on the right side of the charging cabinet.

[0014] Furthermore, a cabinet sealing plate is installed at the bottom of the charging cabinet.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0016] This utility model proposes a structure for a liquid-cooled charger. The liquid cooler is installed outside the cabinet and uses a large fan to avoid the noise superposition caused by multiple fans running at the same time, which can reduce noise. Furthermore, the fan speed can be controlled according to the real-time power of the host, resulting in energy saving and low noise.

[0017] By separating the liquid chiller and main unit into upper and lower compartments, the electrical components and electrical parts inside the cabinet are distributed in different areas, improving the dust and water resistance rating. The heat dissipation system and power modules are isolated into two compartments, effectively reducing heat exchange during cabinet operation, fully utilizing the heat dissipation performance of the liquid chiller, and extending the service life of the components. This assembly method places the input cables in the lower part of the cabinet, which not only facilitates wiring for users but also ensures a neat layout of components, which is conducive to heat dissipation. This component layout scheme not only meets the user's operational convenience but also effectively improves assembly efficiency, thereby enhancing the overall user experience.

[0018] Furthermore, the AC / DC power conversion unit is located in the upper space of the lower cavity, close to the liquid cooler, which reduces the thermal resistance in the process of heat transfer from the power conversion unit to the liquid cooler and improves heat dissipation efficiency. Attached Figure Description

[0019] Figure 1 This is a front view of a charger;

[0020] Figure 2 This is a schematic diagram of the right side of a charger;

[0021] Figure 3 This is a schematic diagram of the liquid cooler structure of a charger;

[0022] Figure 4 A schematic diagram of the front opening of a charger;

[0023] Figure 5 A schematic diagram of the interior of a charger with a rear-opening door;

[0024] Figure 6 The diagram on the right shows a layout scheme for a charger.

[0025] Figure 7 The left side shows a schematic diagram of a charger layout scheme.

[0026] 1. Liquid chiller; 2. Front left door of charging unit; 3. Front door of liquid chiller; 4. Front right door of charging unit; 5. Sealing plate; 6. Emergency stop button; 7. Liquid chiller water tank; 8. Liquid chiller heat dissipation fins; 9. Fan; 10. Liquid chiller water outlet pipe; 11. Liquid chiller water inlet pipe; 12. AC / DC power conversion unit; 13. Distribution unit contactor; 14. Contactor connecting copper busbar; 15. Output cable; 16. Input cable; 17. Molded case circuit breaker; 18. AC contactor; 19. Module DC output terminal block; 20. Module AC input terminal block; 21. Internal turbulence fan; 22. 1P+N with leakage protection switch; 23. Liquid chiller control contactor; 24. 12V power supply; 25. Central control box assembly; 26. Fan control board; 27. CMU control board; 28. Liquid cooler terminal block; 29. ​​Grounding copper busbar; 30. Lightning protection circuit breaker; 31. Lightning protection controller; 32. Power distribution unit control board. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0029] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or may be interposed with another element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or may be interposed with another element. The terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., used herein to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] This invention proposes a structure for a liquid-cooled charger that satisfies both ease of use and improved assembly efficiency, effectively reducing the cost of the charging cabinet. Without compromising the performance of the charging cabinet, the cost is reduced by rationally arranging components, decreasing the number of components, and optimizing the structural design.

[0032] Example 1

[0033] Reference Figure 1 , Figure 2 and Figure 3A charger includes a cabinet with a partition dividing its interior into an upper and lower space. An emergency stop button 6 is located on the right side panel of the cabinet. A liquid cooler front door 3 is installed at the front of the upper space, forming an upper cavity. The liquid cooler front door 3 has ventilation holes. The lower space has a left front door 2 for the charging host and a right front door 3 for the charger cabinet, which are rotatably installed at the front and a left rear door for the charging host and a right rear door for the charger cabinet, which are rotatably installed at the rear, forming a lower cavity. A partition at the bottom of the cabinet has several through holes.

[0034] Reference Figure 3 and Figure 4 The upper cavity houses a liquid chiller 1, which includes a liquid chiller water tank 7, liquid chiller heat dissipation fins 8, a fan 9, and a liquid chiller outlet pipe 10. The liquid chiller water tank 7, liquid chiller heat dissipation fins 8, and fan 9 are arranged sequentially from back to front. The liquid chiller water tank 7 supplies water to the entire system. The inlet of the liquid chiller heat dissipation fins 8 is connected to the first end of the liquid chiller inlet pipe 11, and the outlet is connected to the first end of the liquid chiller outlet pipe 10. The second end of the liquid chiller outlet pipe 10 passes through a partition and connects to the first end of the liquid cooling pipe in the AC / DC power conversion unit 12. The second end of the liquid cooling pipe is connected to the second end of the liquid chiller inlet pipe 11. The liquid chiller water tank 7 is positioned between the liquid chiller inlet pipe 11 and the liquid chiller heat dissipation fins 8, and both the liquid chiller inlet pipe 11 and the liquid chiller heat dissipation fins 8 are connected to the liquid chiller water tank 7.

[0035] Reference Figures 4 to 7 The lower cavity houses the main unit, which includes an AC / DC power conversion unit 12, a distribution unit contactor 13, a contactor connecting copper busbar 14, output cables 15, input cables 16, a molded case circuit breaker 17, an AC contactor 18, a module DC output terminal block 19, a module AC input terminal block 20, an internal turbulence fan 21, a 1p+n residual current circuit breaker 22, a liquid chiller control contactor 23, a 12V power supply 24, a central control box assembly 25, a fan control board 26, a CMU control board 27, a liquid chiller terminal block 28, a grounding copper busbar 29, a surge protector 30, a surge protector controller 31, and a power distribution unit control board 32. The molded case circuit breaker 17 is a three-pole circuit breaker.

[0036] Reference Figure 4 and Figure 5 The AC / DC power conversion unit 12 is located in the upper part of the lower cavity. The distribution unit contactor 13, contactor connecting copper busbar 14, and output cable 15 are arranged sequentially from top to bottom on the lower left side of the lower cavity. The AC contactor 18, molded case circuit breaker 17, and input cable 16 are arranged sequentially from top to bottom on the lower right side of the lower cavity. The module DC output terminal block 19 is arranged above the rear side of the AC / DC power conversion unit 12, and the module AC input terminal block 20 is arranged below the rear side.

[0037] Reference Figure 6 and Figure 7 , Figure 6 A diagram illustrating the process of removing the right side panel of the cabinet and opening the front right door 4 and rear left door of the charging unit. Figure 7 This diagram illustrates how to remove the left side panel of the cabinet and open the left rear door and left front door 4 of the charging unit.

[0038] The internal turbulence fan 21 is located in front of the AC / DC power conversion unit 12 at its lower part. The 1P+N leakage protection switch 22 is located on the right side panel of the cabinet. The liquid chiller control contactor 23 is located in front of the 1P+N leakage protection switch 22. A 12V power supply 24 and the central control box assembly 25 are installed on the inner wall of the left front door 2. The fan control board 26 is located directly below the 12V power supply 24. The CMU control board 27 is located directly below the central control box assembly 25. The liquid chiller terminal block 28 is located behind the right side panel of the cabinet. The grounding copper busbar 29 is located to the right of the output cable 15. The surge protector 30 and surge protector controller 31 are both located in front of the right side panel of the cabinet. The surge protector controller 31 is located above the surge protector 30. The power distribution unit control board 32 is located to the left of the distribution unit contactor 13. Another 12V power supply 24 is located above the power distribution unit control board 32.

[0039] One end of the input cable 16 is connected to the power distribution network to draw power from the power distribution network, and the other end is connected to the first end of the molded case circuit breaker 17 through a copper busbar. The second end of the molded case circuit breaker 17 is connected to the first end of the module AC input terminal block 20 through the AC contact 18. The second end of the module AC input terminal block 20 is connected to the first end of the AC / DC power conversion unit 12. The second end of the AC / DC power conversion unit 12 is connected to the first end of the module DC output terminal block 19. The second end of the module DC output terminal block 19 is connected to the first end of the contactor connecting copper busbar 14 through the distribution unit contactor 13. The second end of the contactor connecting copper busbar 14 is connected to the first end of the output cable 15. The second end of the output cable 15 is connected to the charging gun.

[0040] One end of the 1p+n residual current circuit breaker 22 is connected to the downstream stage of the molded case circuit breaker 17, and the other end is connected to the first terminal of the 12V power supply 24 and the liquid chiller control contactor 23. The 12V power supply 24 is a transformer used to convert 220V voltage to 12V voltage. The 12V power supply 24 is used to power the central control box assembly 25, the fan control board 26, the CMU control board 27, and the power distribution unit control board 32. The first terminal of the liquid chiller terminal block 28 is connected to the 12V power supply 24, and the second terminal is connected to several control lines of the liquid chiller.

[0041] One end of the grounding copper busbar 29 is connected to the ground wire, and the other end is grounded.

[0042] The surge protector 30 and surge protector controller 31 form a circuit with the neutral busbar, which is located between the input cable 16 and the molded case circuit breaker 17. This charging cabinet has a high power output of 800kW and can simultaneously support 10 terminals, enough to charge 20 vehicles at the same time. Without affecting the performance of the charging cabinet, the cost of the cabinet is reduced through reasonable component layout. Liquid cooler 1 is responsible for heat dissipation of the entire system.

[0043] Cabinet sealing plate 5: Secure it with screws after wiring is completed to keep the charger clean;

[0044] Emergency stop switch 6 cuts off power in case of emergency; controls the molded case circuit breaker 17 to disconnect, thus cutting off power to the entire cabinet.

[0045] The liquid cooler has a water tank (7) to ensure sufficient coolant volume.

[0046] The heat dissipation fins 8 increase the heat dissipation area of ​​the coolant, ensuring that sufficient heat is removed during the rotation of the fan 9.

[0047] The outlet pipe 10 of the liquid chiller provides cooling water to the AC / DC power conversion unit 12;

[0048] AC / DC power conversion unit 12 generates heat during operation, which raises the temperature of the cooling water. The heated water enters the liquid chiller 1 through the liquid chiller inlet 11 and is cooled by the heat dissipation fins 8 and the fan 9.

[0049] The power distribution unit contactor 13 is connected to the copper busbar 14 for combination, and its opening and closing are controlled by the power distribution unit control board 32 to achieve the purpose of power distribution.

[0050] Output cable 15 connects to the charging gun and is used to connect to external electrical equipment.

[0051] Input cable 16 is connected to molded case circuit breaker 17 to control the on / off state of the entire system circuit.

[0052] The AC contactor 18 remotely controls the on / off state of the circuit via the central control box assembly 25; the AC power input from the contactor 18 via the module AC input terminal block 20 is converted by the AC / DC power conversion unit 12 and then sent to the distribution unit contactor 13 via the module DC output terminal block 19.

[0053] The 1p+n control cabinet with leakage protection switch 22 controls the switching of low-voltage lines and (12V) power supply 24; one end of the low-voltage line is connected to the 12V power supply 24, and the other end is connected to the terminal block 21.

[0054] The liquid cooler control contactor 23 is used to control the circuit switching of the fan 9.

[0055] 12V power supply 24 is used to provide 12V power to the secondary equipment in the cabinet.

[0056] The central control box assembly 25 is used to control the circuit on / off strategy of the entire cabinet.

[0057] The fan control board 26 is used to control the internal turbulence fan 21.

[0058] CMU control board 27 is used to control power distribution unit control board 32. Power distribution unit control board 32 is connected to 12V power supply 24, which then supplies power to the power distribution unit control board.

[0059] The liquid chiller terminal block 28 provides 12V power to external devices (such as the control lines of the liquid chiller).

[0060] The grounding copper busbar 29 is used for grounding the cabinet.

[0061] Fan 9 is connected to industrial high-voltage electricity (mains power) from in front of molded case circuit breaker 17, to surge protection circuit breaker 30, and then to surge protection controller 31. It then connects to the N pole of the external wiring to control the on / off state of molded case circuit breaker 17.

[0062] Example 2

[0063] The only difference between this embodiment and Embodiment 1 is that in this embodiment, a cabinet sealing plate 5 is installed at the bottom of the cabinet.

[0064] The term “constituting of” in describing a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novel features of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments that are substantially composed of these elements, components, parts, or steps.

[0065] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of "a" or "an" to describe an element, component, part, or step does not imply the exclusion of other elements, components, parts, or steps.

[0066] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

Claims

1. A charger, characterized in that, The system includes a liquid chiller (1) and a main unit, which are located in an upper cavity and a lower cavity, respectively. The upper cavity and the lower cavity are separated by a partition. The liquid chiller (1) includes a liquid chiller heat dissipation fin (8), a fan (9), and a liquid chiller water outlet pipe (10). The inlet of the liquid chiller heat dissipation fin (8) is connected to the first end of the liquid chiller water inlet pipe (11), and the outlet is connected to the first end of the liquid chiller water outlet pipe (10). The second end of the liquid chiller water outlet pipe (10) passes through the partition and is connected to the first end of the liquid cooling pipe in the AC / DC power conversion unit (12). The second end of the liquid cooling pipe is connected to the second end of the liquid chiller water inlet pipe (11).

2. The charger according to claim 1, characterized in that, A liquid chiller water tank (7) is provided between the liquid chiller water inlet pipe (11) and the liquid chiller heat dissipation fins (8), and both the liquid chiller water inlet pipe (11) and the liquid chiller heat dissipation fins (8) are connected to the liquid chiller water tank (7).

3. A charger according to claim 2, characterized in that, The liquid cooler water tank (7), liquid cooler heat dissipation fins (8) and fan (9) are arranged sequentially from back to front.

4. A charger according to claim 1, characterized in that, The host includes an AC / DC power conversion unit (12), a distribution unit contactor (13), a contactor connecting copper busbar (14), an output cable (15), an input cable (16), a molded case circuit breaker (17), and an AC contactor (18). The AC / DC power conversion unit (12) is located in the upper space of the lower cavity. The distribution unit contactor (13), the contactor connecting copper busbar (14), and the output cable (15) are arranged sequentially from top to bottom on the lower left side of the lower cavity, while the AC contactor (18), the molded case circuit breaker (17), and the input cable (16) are arranged sequentially from top to bottom on the lower right side of the lower cavity.

5. A charger according to claim 1, characterized in that, The AC / DC power conversion unit (12) has a module DC output terminal block (19) on the upper rear side and a module AC input terminal block (20) on the lower rear side.

6. A charger according to claim 1, characterized in that, The lower cavity is rotatably mounted with a left front door (2) for the charging host and a right front door (4) for the charging cabinet at the front end, and rotatably mounted with a left rear door for the charging host and a right rear door for the charging host cabinet at the rear end.

7. A charger according to claim 6, characterized in that, The charging host has a 12V power supply (24), a central control box assembly (25), a fan control board (26) and a CMU control board (27) installed on the inner wall of the left front door (2).

8. A charger according to claim 1, characterized in that, The upper cavity has heat dissipation holes on its side wall.

9. A charger according to claim 1, characterized in that, An emergency stop button (6) is provided on the right side of the charger cabinet.

10. A charger according to claim 1, characterized in that, A cabinet sealing plate (5) is installed at the bottom of the charger cabinet.

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