Charger

Abstract

The utility model discloses a charger, and belongs to the field of charger structure design. Comprising a liquid cooling module and a charging module, the liquid cooling module is arranged at the top of the charging module, and the interior of the charging module is divided into an upper half part and a lower half part; an AC / DC power conversion unit and a comprehensive power distribution and control module are arranged in the upper half part and the lower half part respectively, the AC / DC power conversion unit is connected with the liquid cooling module, and the comprehensive power distribution and control module is electrically connected with the AC / DC power conversion unit; a metal partition plate is arranged between the upper half part and the lower half part, and a plurality of sets of alternating current input line waterproof lock heads and direct current output line waterproof lock heads are arranged on the metal partition plate. According to the cabinet, the technical problems of liquid cooling heat dissipation and safety isolation in the charger are solved through the design of compartment arrangement, external liquid cooling modules, metal partition plates and waterproof lock heads, particularly, the waterproof lock heads effectively prevent the risk of electrical short circuit caused by leakage of cooling liquid, and meanwhile efficient heat dissipation is ensured.

Description

Technical Field

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

[0002] With the development of electric vehicles, charging stations have also experienced explosive growth to meet the charging needs of electric vehicles. In the selection process of charging stations, key factors such as charging efficiency, appearance, internal component configuration, space occupation, cost, and ease of operation all have a direct and significant impact on their selectivity.

[0003] In existing technologies, chargers are typically designed as a single integrated cabinet, containing liquid cooling components, charging components, and related parts. These components are often tightly packed together inside the cabinet without clear compartments or isolation measures. When the liquid cooling components exchange heat with the power conversion units in the charging components, there is a possibility of water leakage. Furthermore, if the coolant in the liquid cooling components leaks, it can easily cause electrical short circuits, resulting in serious consequences such as equipment damage or even fire. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a charger that solves the technical problems of liquid cooling heat dissipation and safety isolation in the charger by means of compartment arrangement, external liquid cooling module, metal partition and waterproof lock design. In particular, the waterproof lock effectively prevents the risk of electrical short circuit caused by coolant leakage, while ensuring efficient heat dissipation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a charger, including a liquid cooling module and a charging module arranged in separate compartments; the liquid cooling module is located on top of the charging module, and the interior of the charging module is divided into an upper part and a lower part;

[0007] The upper and lower halves are respectively equipped with an AC / DC power conversion unit and an integrated power distribution and control module. The AC / DC power conversion unit is connected to the liquid cooling module, and the integrated power distribution and control module is electrically connected to the AC / DC power conversion unit.

[0008] A metal partition is provided between the upper and lower parts, and several sets of waterproof lock heads for AC input lines and DC output lines are provided on the metal partition.

[0009] In one embodiment, the cable is led out from the integrated power distribution and control module, connected to the AC / DC power conversion unit via the AC input line waterproof lock head, converted to DC, and then connected to the integrated power distribution and control module via the DC output line waterproof lock head.

[0010] In one embodiment, the AC / DC power conversion unit consists of multiple modules, and the AC input line waterproof lock head and the DC output line waterproof lock head are longitudinally arranged between the multiple modules and on both sides.

[0011] In one embodiment, the liquid cooling module includes liquid cooler heat dissipation fins, a liquid cooler water outlet pipe, and a liquid cooler water inlet pipe;

[0012] The inlet of the heat dissipation fins of the liquid chiller is connected to one end of the liquid chiller's water inlet pipe, and the outlet of the heat dissipation fins of the liquid chiller is connected to one end of the liquid chiller's water outlet pipe.

[0013] In one embodiment, a liquid cooler water tank is provided between the liquid cooler water inlet pipe and the heat dissipation fins.

[0014] In one embodiment, the liquid cooling module further includes several sets of fans and a front door of the liquid cooler. A heat dissipation mesh is provided on the front door of the liquid cooler. The fans are located behind the heat dissipation mesh and are positioned directly opposite the heat dissipation fins of the liquid cooler. The charger adopts a front-in, rear-out airflow configuration.

[0015] In one embodiment, the other port of the liquid chiller outlet pipe is connected to one port of the liquid cooling pipe in the AC / DC power conversion unit; the other port of the liquid chiller inlet pipe is connected to the other port of the liquid cooling pipe in the AC / DC power conversion unit.

[0016] In one embodiment, the upper part further includes a module DC output terminal block and a module AC input terminal block disposed on the back of the AC / DC power conversion unit, the module DC output terminal block and the module AC input terminal block being electrically connected to the AC / DC power conversion unit.

[0017] In one embodiment, the integrated power distribution and control module includes a first part and a second part arranged adjacent to each other. The first part includes a distribution unit contactor, a contactor connecting copper busbar and an output cable arranged from top to bottom. The second part includes an AC contactor, a molded case circuit breaker and an input cable arranged from top to bottom.

[0018] In one embodiment, the charging module has a double-opening front door and a rear door consisting of four door panels on its outer side. Two longitudinally arranged internal turbulence fans are provided inside one side door panel of the front door, two transversely arranged internal turbulence fans are provided inside the other side door panel of the front door, and two longitudinally arranged internal turbulence fans are provided inside one side door panel of the rear door.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This utility model provides a charger that uses liquid cooling for heat dissipation. The compartmentalized design allows the liquid cooling module and the charging module to be distributed in different spatial areas. The liquid cooling module is located on the outside of the charging module cabinet and is responsible for efficiently dissipating heat from the AC / DC power conversion unit in the charging module. A metal partition is set between the AC / DC power conversion unit and the integrated power distribution and control module. Waterproof lock heads for the AC input line and DC output line are installed on the partition to effectively prevent water damage. This waterproofing treatment further avoids the risk of coolant leakage from the liquid cooling module.

[0021] The use of heat sink fins and fans further increases the heat dissipation area, ensuring stable system operation under high loads. Attached Figure Description

[0022] Figure 1 This is a front view of the layout scheme of a charger according to the present invention;

[0023] Figure 2 This is a schematic diagram on the right side of a layout scheme for a charger according to the present invention;

[0024] Figure 3 This is a schematic diagram of the liquid cooler structure of a charger according to the present invention;

[0025] Figure 4 This is a schematic diagram of the front opening of a charger according to the present invention;

[0026] Figure 5 This is a schematic diagram of the layout of a charger according to the present invention, showing the interior of the rear door.

[0027] Figure 6 This is a schematic diagram of the interior of the right side wall of a charger layout scheme according to the present invention;

[0028] Figure 7 This is a schematic diagram of the interior of the left side wall of a charger layout scheme according to this utility model;

[0029] Figure 8 This is a cross-sectional view of the upper and lower parts of a charger according to the present invention;

[0030] Figure 9 This is a top view of a waterproof charger structure according to the present invention.

[0031] Wherein: 1-Liquid chiller; 2-Front left door of charging cabinet; 3-Front door of liquid chiller; 4-Front right door of charging cabinet; 5-Sealing plate; 6-Emergency stop switch; 7-Liquid chiller water tank; 8-Liquid chiller heat dissipation fins; 9-Fan; 10-Liquid chiller outlet pipe; 11-Liquid chiller 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-Molded case circuit breaker; 20-DC output terminal block; 21-Module AC input terminal block; 22-Internal turbulence fan; 23-1p+n with leakage protection switch; 24-Liquid chiller control contactor; 25-12V power supply; 26-Central control box assembly; 27-Fan control board; 28-CMU control board; 29-Liquid chiller terminal block; 30-Grounding copper busbar; 31-Surge protection circuit breaker; 32-Surge protection controller; 33-Power distribution unit control board; 34-Waterproof lock head for AC input line; 35-Waterproof lock head for DC output line. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings:

[0035] See Figures 1-9This utility model provides a charger that separates the liquid cooling module and the charging module into two compartments. The liquid cooling module is externally mounted above the charging module, and the internal structure of the charging module is divided into an upper and lower section. This internal layout of the charging cabinet, employing a two-compartment design, isolates the heat dissipation system and power modules into two separate chambers, effectively reducing heat exchange during cabinet operation and improving the lifespan of the components.

[0036] The upper part includes an AC / DC power conversion unit 12, and the lower part includes an integrated power distribution and control module. The AC / DC power conversion unit 12 is connected to a liquid cooling module to achieve efficient thermal energy management. The integrated power distribution and control module is electrically connected to the AC / DC power conversion unit 12.

[0037] To enhance the waterproof performance of the equipment, a waterproof structure is installed between the upper and lower parts. This waterproof structure includes a metal partition and multiple sets of AC input line waterproof lock heads and DC output line waterproof lock heads installed on the metal partition, which are used to ensure the waterproof sealing of the AC input line and DC output line during the connection process.

[0038] In the aforementioned charger, the cable is led out from the integrated power distribution and control module and connected to the AC / DC power conversion unit 12 through the AC input line waterproof lock head 33 for AC to DC conversion. Subsequently, the converted DC power cable is reconnected to the integrated power distribution and control module through the DC output line waterproof lock head 34.

[0039] In the aforementioned charger, the AC / DC power conversion unit 12 is composed of multiple modules, with the AC input line waterproof lock head 33 and the DC output line waterproof lock head 34 arranged vertically between the multiple modules and on both sides.

[0040] like Figure 4 , Figure 8 as well as Figure 9 The AC / DC power conversion unit 12 consists of 20 modules, grouped into four sets of five, and is equipped with four sets of waterproof lock heads 33 for AC input lines and 34 for DC output lines. 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.

[0041] like Figure 3 , Figure 6 as well as Figure 7 As shown, the liquid cooling module consists of liquid cooler heat dissipation fins 8, a liquid cooler outlet pipe 10, and a liquid cooler inlet pipe 11. The inlet end of the liquid cooler heat dissipation fins 8 is connected to one end of the liquid cooler inlet pipe 11, while the outlet end is connected to one end of the liquid cooler outlet pipe 10. A liquid cooler water tank 7 is provided between the liquid cooler inlet pipe 11 and the liquid cooler heat dissipation fins 8 to store coolant.

[0042] In addition, the liquid cooling module is equipped with multiple fans 9 and a front door 3 for the liquid cooler. The front door 3 has a heat dissipation mesh plate, and the fans 9 are mounted on the back of the mesh plate, with their airflow directly directed at the heat dissipation fins 8 of the liquid cooler to promote effective heat dissipation. The charger of this invention is designed with a front-to-back airflow ventilation mode to optimize heat dissipation. The liquid cooler 1 is installed outside the cabinet and uses a large fan, which reduces noise and allows the fan speed to be controlled according to the actual power of the host, resulting in energy saving and low noise.

[0043] In terms of specific connections, the other end of the liquid cooler outlet pipe 10 is connected to one end of the liquid cooling pipe inside the AC / DC power conversion unit 12, while the other end of the liquid cooler inlet pipe 11 is connected to the other end of the liquid cooling pipe inside the AC / DC power conversion unit 12, thereby forming a complete coolant circulation loop.

[0044] See Figure 5 In the upper part of the structure, the back of the AC / DC power conversion unit 12 is provided with a module DC output terminal block 19 and a module AC input terminal block 20, which are electrically connected to the AC / DC power conversion unit 12.

[0045] The integrated power distribution and control module mainly consists of two closely spaced parts. The first part, from top to bottom, includes a distribution unit contactor 13, a contactor connecting copper busbar 14, and an output cable 15. The second part, correspondingly arranged from top to bottom, includes an AC contactor 18, a molded case circuit breaker 17, and an input cable 16.

[0046] like Figure 1 , Figure 2 , Figure 6 as well as Figure 7 As shown, the charging module's exterior includes a double-opening front door and a rear door composed of four door panels. Inside one side of the front door panel, two longitudinally arranged internal deflector fans 21 are installed; while inside the other side of the front door panel, two transversely arranged internal deflector fans 21 are arranged. Similarly, inside one side of the rear door panel, two longitudinally arranged internal deflector fans 21 are also provided.

[0047] This invention provides an optimized structural layout for a liquid-cooled charger. This layout, through reasonable component configuration and quantity reduction, effectively lowers the manufacturing cost of the charging cabinet without sacrificing its performance. Simultaneously, the compartmentalized design of the liquid cooler 1 and the main unit not only achieves separate arrangement of electrical components and electrical parts within the cabinet but also improves dust and water resistance, fully utilizes the heat dissipation efficiency of the liquid cooler 1, and reduces noise levels. Furthermore, this layout facilitates wiring operations for users, and the component arrangement is both aesthetically pleasing and conducive to heat dissipation. In particular, this invention provides specialized waterproofing treatment for the module-AC / DC power conversion unit 12 and the AC input and DC output sections below it, effectively avoiding the risks associated with coolant leakage.

[0048] The charger layout proposed above satisfies both ease of use and assembly efficiency. It also adopts liquid cooling to improve the utilization rate of the charger's components, reduce noise, and enhance dust and water resistance.

[0049] Example

[0050] See Figure 1 This embodiment provides a charger, which includes a liquid-cooled module and a charging module arranged in separate compartments. The charging module is divided into an upper part and a lower part, and includes an AC / DC power conversion unit 12 and an integrated power distribution and control module arranged vertically. The liquid-cooled module is located on the top of the charging module. A cabinet is installed outside the charging module. The cabinet includes a left and right double-opening front door and a rear door composed of four doors, namely the left front door 2, the right front door 4, the left rear door, and the right rear door. A sealing plate 5 is provided at the bottom of the cabinet. See also Figure 2 An emergency stop switch 6 is installed on the outer wall of the cabinet, specifically on the right side wall.

[0051] See Figure 3 The liquid cooling module includes a liquid cooler 1, which includes a liquid cooler water tank 7, liquid cooler heat dissipation fins 8, a fan 9, a liquid cooler water outlet pipe 10, and a liquid cooler water inlet pipe 11. A front door 3 is located at the front of the liquid cooler 1, and a heat dissipation mesh is provided on the front door 3. See details... Figure 3 In the liquid cooling module, the liquid cooler water tank 7 is located at the rear, followed by the liquid cooler heat dissipation fins 8, and the fan 9 is at the front. The liquid cooler water tank 7 is responsible for providing water to the entire system. The water inlet of the liquid cooler heat dissipation fins 8 is connected to one end of the liquid cooler inlet pipe 11, while its outlet is connected to one end of the liquid cooler outlet pipe 10. The other end of the liquid cooler outlet pipe 10 penetrates the partition and is connected to one end of the liquid cooling pipe in the AC / DC power conversion unit 12. The other end of this liquid cooling pipe is then connected to the other end of the liquid cooler inlet pipe 11, forming a circulation.

[0052] During this process, the liquid cooler water tank 7 is connected to the liquid cooler water inlet pipe 11 and the liquid cooler heat dissipation fins 8.

[0053] See Figure 4 The AC / DC power conversion unit 12 is connected to the liquid cooling module, and the integrated power distribution and control module is electrically connected to the AC / DC power conversion unit 12.

[0054] See Figure 5 The module DC output terminal block 19 and the module AC input terminal block 20 are located on the back of the AC / DC power conversion unit 12 and are electrically connected to the AC / DC power conversion unit 12.

[0055] See Figure 4 as well as Figure 9 A metal partition is provided between the upper and lower parts, and four sets of AC input line waterproof lock heads 33 and DC output line waterproof lock heads 34 are provided on the metal partition.

[0056] See Figure 4 , Figure 5 , Figure 6 as well as Figure 7 The integrated power distribution and control module includes 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, an AC contactor 18, 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. Among them, the molded case circuit breaker 17 is a three-pole circuit breaker.

[0057] See Figure 4 The distribution unit contactor 13, contactor connecting copper busbar 14 and output cable 15 are arranged in order from top to bottom. The AC contactor 18, molded case circuit breaker 17 and input cable 16 are arranged in order from top to bottom. The distribution unit contactor 13, contactor connecting copper busbar 14 and output cable 15 are located on the left and are arranged close to the AC contactor 18, molded case circuit breaker 17 and input cable 16 located on the right.

[0058] See Figure 6 The inner wall of the left front door 2 of the charging cabinet is equipped with a 12V power supply 24, a central control box assembly 25, a fan control board 26, a CMU control board 27, and two longitudinally arranged internal turbulence fans 21.

[0059] The central control box assembly 25, a set of 12V power supplies 24, a CMU control board 27, and a fan control board 26 are arranged in a grid pattern from left to right and top to bottom on the inner wall of the left front door 2 of the charging cabinet. The central control box assembly 25 is located above the CMU control board 27, and the set of 12V power supplies 24 is located above the fan control board 26. An internal turbulence fan 21 is installed between the central control box assembly 25 and the 12V power supply 24, and another internal turbulence fan 21 is installed above the first internal turbulence fan 21.

[0060] In the layout of the charging cabinet, the 1p+n circuit breaker with leakage protection 22 and the liquid cooler control contactor 23 are installed on the right side wall of the cabinet. The liquid cooler control contactor 23 is located in front of the 1p+n circuit breaker with leakage protection 22 and close to the left front door 2 of the charging cabinet.

[0061] The liquid cooler terminal block 28 is located on the right side wall of the cabinet, near the front door of the charging cabinet, and the grounding copper busbar 29 is located behind the liquid cooler terminal block 28, near the rear door of the charging cabinet.

[0062] The surge protector circuit breaker 30 and surge protector controller 31 are located on the right side wall of the cabinet, near the rear door of the charging cabinet, with the surge protector controller 31 located above the surge protector circuit breaker 30.

[0063] The right rear door of the charging cabinet is equipped with two sets of internal turbulence fans 21 that are symmetrical to the two sets of internal turbulence fans 21 on the left front door 2 of the charging cabinet.

[0064] See Figure 7 Two sets of horizontally arranged internal turbulence fans 21 are installed on the lower middle part of the right front door 4 of the charging cabinet. The power distribution unit control board 32 is located to the left of the distribution unit contactor 13, and another 12V power supply 24 is located above the power distribution unit control board 32.

[0065] This embodiment provides a charger cabinet with a high power of 800KW, capable of simultaneously supporting 10 terminals and charging 20 vehicles. The cabinet's cost is reduced through a rational layout of components without compromising its performance.

[0066] This DC charger adopts a compartmentalized layout design, with the liquid cooling module externally positioned above the charging module. A liquid cooler 1 is located on top, dedicated to providing heat dissipation for the entire charging cabinet. A cabinet sealing plate 5 is installed at the bottom of the cabinet to ensure its airtightness and stability. In an emergency, the emergency stop switch 6 can quickly cut off the power; the molded case circuit breaker 17 trips, achieving a safe power cut-off for the entire cabinet.

[0067] The liquid cooling module is externally mounted above the charging module, using a front-to-back airflow design to optimize heat dissipation.

[0068] The upper part of the charging module is the AC / DC power conversion unit area, which is divided into four groups, with five modules in each group, for a total of 20 modules. The modules are connected to the external AC input power through AC switches and contactors, ensuring the safe and reliable operation of the system.

[0069] Regarding the liquid cooling module, the liquid cooler tank 7 stores coolant to ensure the normal operation of the liquid cooling module. The liquid cooler heat dissipation fins 8 increase the heat dissipation area of ​​the coolant, and together with the rotation of the fan 9, effectively remove heat. The liquid cooler outlet pipe 10 delivers cooling water to the AC / DC power conversion unit 12 for heat dissipation, while the water that has increased in temperature returns to the liquid cooler 1 through the liquid cooler inlet pipe 11 for cooling circulation, and is cooled by the liquid cooler heat dissipation fins 8 and the fan 9.

[0070] AC / DC power conversion unit 12 is responsible for converting alternating current (AC) to direct current (DC). The distribution unit contactor 13 is connected to copper busbar 14 via a contactor connection, and its opening and closing are controlled by the power distribution unit control board 32 to achieve flexible power distribution. Output cable 15 is connected to the charging gun to provide power to external electrical equipment.

[0071] Input cable 16 connects to molded case circuit breaker 17 to control the on / off state of the entire system circuit. AC contactor 18 remotely controls the on / off state of the circuit via central control box assembly 25. The AC power input to module AC input terminal block 20 is converted by AC / DC power conversion unit 12 and output to distribution unit contactor 13 via module DC output terminal block 19, ultimately connecting to external equipment.

[0072] In addition, the 1P+N residual current circuit breaker 22 controls the switching of the low-voltage line and the 12V power supply 24 inside the cabinet. 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 to provide power to the secondary equipment inside the cabinet. Internal turbulence fans 21, arranged longitudinally and laterally, are installed inside the front and rear door panels, respectively, and their operation is controlled by the fan control board 26 to further enhance the heat dissipation effect of the cabinet.

[0073] The liquid chiller control contactor 23 is used to control the circuit switching of fan 9. The 12V power supply 24 provides a stable 12V power supply to the secondary equipment within the cabinet. The central control box assembly 25 is responsible for controlling the circuit switching strategy of the entire cabinet. The CMU control board 27 is used to control the power distribution unit control board 32. The power distribution unit control board 32 is connected to the 12V power supply 24, which then supplies power to the power distribution unit control board.

[0074] The liquid chiller terminal block 28 provides 12V power to external devices (such as the control lines of the liquid chiller). The grounding copper busbar 29 is used for the grounding protection of the cabinet. The fan 9 is connected to the industrial high-voltage power (mains power) in front of the molded case circuit breaker 17, to the surge protector 30, and then to the surge protector controller 31, which then connects to the N pole of the external wiring to control the on / off state of the molded case circuit breaker 17.

[0075] Specifically, in the above-mentioned components, 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 one end of the molded case circuit breaker 17 through a copper busbar. The other end of the molded case circuit breaker 17 is connected to one end of the module AC input terminal block 20 through an AC contactor 18. The other end of the module AC input terminal block 20 is connected to one end of the AC / DC power conversion unit 12. The other end of the AC / DC power conversion unit 12 is connected to one end of the module DC output terminal block 19. The other end of the module DC output terminal block 19 is connected to one end of the contactor connecting copper busbar 14 through a distribution unit contactor 13. The two ends of the contactor connecting copper busbar 14 are connected to one end of the output cable 15, and the other end of the output cable 15 is connected to the charging gun.

[0076] 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. One end of the liquid chiller terminal block 28 is connected to the 12V power supply 24, and the other two ends are connected to several control lines of the liquid chiller.

[0077] One end of the grounding copper busbar 29 is connected to the ground wire, and the other end is grounded.

[0078] The surge protection circuit breaker 30, surge protection controller 31 and neutral bus form a circuit, with the neutral bus located between the input cable 16 and the molded case circuit breaker 17.

[0079] In terms of waterproof design, the charger adopts a compartmentalized waterproof method and a waterproof structure between the AC / DC power conversion unit 12 and the integrated power distribution and control module, which are set up at the top and bottom. The upper and lower layers are isolated by a whole metal partition. The AC input line is connected to the AC / DC power conversion unit 12 through the waterproof lock head 33 to convert it into DC. Then the cable from the DC output terminal block 19 of the module is connected to the distribution unit contactor 13 through the DC output line waterproof lock head 34 to connect to the outside.

[0080] The waterproof lock head is waterproof. If water leaks or seeps into the upper liquid cooling module, it will be isolated by a metal partition and flow from the edge to the bottom of the cabinet, preventing direct contact with the DC output and AC input conductors and thus ensuring the safe operation of the host.

[0081] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A charger, characterized in that, It includes a liquid cooling module and a charging module arranged in separate compartments; the liquid cooling module is located on top of the charging module, and the interior of the charging module is divided into an upper part and a lower part; The upper and lower halves are respectively provided with an AC / DC power conversion unit (12) and an integrated power distribution and control module. The AC / DC power conversion unit (12) is connected to the liquid cooling module, and the integrated power distribution and control module is electrically connected to the AC / DC power conversion unit (12). A metal partition is provided between the upper part and the lower part, and a number of sets of AC input line waterproof lock heads (33) and DC output line waterproof lock heads (34) are provided on the metal partition.

2. The charger according to claim 1, characterized in that, The cable is led out from the integrated power distribution and control module, connected to the AC / DC power conversion unit (12) through the AC input line waterproof lock head (33), converted to DC, and then connected to the integrated power distribution and control module through the DC output line waterproof lock head (34).

3. The charger according to claim 1, characterized in that, The AC / DC power conversion unit (12) is composed of multiple modules, and the AC input line waterproof lock head (33) and DC output line waterproof lock head (34) are longitudinally arranged between the multiple modules and on both sides.

4. The charger according to claim 1, characterized in that, The liquid cooling module includes liquid cooler heat dissipation fins (8), liquid cooler water outlet pipe (10), and liquid cooler water inlet pipe (11). The inlet of the heat dissipation fins (8) of the liquid chiller is connected to one end of the water inlet pipe (11) of the liquid chiller, and the outlet of the heat dissipation fins (8) of the liquid chiller is connected to one end of the water outlet pipe (10) of the liquid chiller.

5. The charger according to claim 4, characterized in that, A water tank (7) for the liquid chiller is provided between the water inlet pipe (11) and the heat dissipation fins (8).

6. The charger according to claim 4, characterized in that, The liquid cooling module also includes several sets of fans (9) and a front door (3) of the liquid cooler. A heat dissipation mesh is provided on the front door (3) of the liquid cooler. The fans (9) are located behind the heat dissipation mesh and are positioned directly opposite the heat dissipation fins (8) of the liquid cooler. The charger adopts a forward airflow and rear airflow method.

7. The charger according to claim 4, characterized in that, The other port of the liquid chiller outlet pipe (10) is connected to one port of the liquid cooling pipe in the AC / DC power conversion unit (12); the other port of the liquid chiller inlet pipe (11) is connected to the other port of the liquid cooling pipe in the AC / DC power conversion unit (12).

8. The charger according to claim 1, characterized in that, The upper part also includes a module DC output terminal block (19) and a module AC input terminal block (20) disposed on the back of the AC / DC power conversion unit (12), which are electrically connected to the AC / DC power conversion unit (12).

9. The charger according to claim 1, characterized in that, The integrated power distribution and control module includes a first part and a second part arranged adjacent to each other. The first part includes a distribution unit contactor (13), a contactor connecting copper busbar (14) and an output cable (15) arranged from top to bottom. The second part includes an AC contactor (18), a molded case circuit breaker (17) and an input cable (16) arranged from top to bottom.

10. The charger according to claim 1, characterized in that, The charging module has a double-opening front door and a rear door consisting of four door panels on the outside. Two vertically arranged internal turbulence fans (21) are installed inside one side of the front door panel, and two horizontally arranged internal turbulence fans (21) are installed inside the other side of the front door panel. Two vertically arranged internal turbulence fans (21) are installed inside one side of the rear door panel.

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