Charging gun holder

Abstract

The present invention discloses a charging gun holder, which includes a shell and a PCB board; a wire hole is provided on the first side of the shell, which is used to pass a power transmission line; the PCB board includes a substrate, a three-phase seat and a relay assembly; the substrate is arranged in the shell, and the first side of the substrate is arranged opposite to the inner wall of the first side of the shell; the three-phase seat is located on a side of the substrate close to the first side, and is used to connect the charging gun; the relay assembly is arranged on the substrate, distributed on the periphery of the three-phase seat, and is electrically connected to the three-phase seat and the power transmission line passing through the wire hole, and is used to turn on or off the power transmission line and the three-phase seat, and the three-phase seat is directly welded to the substrate, and the relay assembly is arranged on the substrate, distributed on the periphery of the three-phase seat, and is arranged close to the three-phase seat, so that when the power transmission line passes through the wire hole and is electrically connected to the relay assembly, the power supply distance between the power transmission line and the relay assembly, and between the relay assembly and the three-phase seat is reduced, thereby reducing energy loss and cost.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a charging gun holder. Background Art

[0002] In the field of modern electrical equipment charging, three-phase charging, due to its high power transmission capabilities, is widely used in scenarios such as electric vehicle charging stations and industrial equipment charging. Traditional three-phase charging systems consist of a charging gun socket and a charging gun. The charging gun connects to the charging gun socket and the electric vehicle, drawing power from the charging gun socket to charge the electric vehicle.

[0003] However, the socket terminals on the existing charging gun holder are assembled on the housing of the charging gun holder and electrically connected to the control motherboard inside the charging gun holder through cables. This not only increases the number of parts of the charging gun holder, but also increases the difficulty of assembly and the probability of error. In addition, during long-term use, many connection points are prone to loosening, poor contact and other faults, affecting charging stability.

[0004] In addition, the additional cables and adapter plates require a certain amount of physical space, which is not conducive to achieving compact and miniaturized design in the charging gun holder that has strict requirements on space layout, and limits the portability of the device and the expansion of application scenarios. Summary of the Invention

[0005] An embodiment of the present invention provides a charging gun holder to solve the problems of poor stability and high cost of existing charging gun holders.

[0006] A charging gun holder, comprising a shell and a PCB board;

[0007] A wire hole is provided on the first side surface of the housing, and the wire hole is used to pass the power transmission line;

[0008] The PCB board includes a substrate, a three-phase seat and a relay assembly;

[0009] The substrate is disposed in the housing, and the first side edge of the substrate is disposed opposite to the inner wall of the first side surface of the housing;

[0010] The three-phase seat is located on a side of the substrate close to the first side and is used to connect a charging gun;

[0011] The relay assembly is arranged on the substrate, distributed around the three-phase seat, and electrically connected to the three-phase seat and the power transmission line passing through the wire hole, and is used to connect or disconnect the power transmission line and the three-phase seat.

[0012] Furthermore, the three-phase socket includes a socket body, socket terminals and welding pins;

[0013] The socket terminal is arranged on the front of the socket body, and the welding pin is arranged on the back of the socket body;

[0014] The socket terminal is electrically connected to the welding pin;

[0015] The welding pins are welded to the power supply pads on the substrate.

[0016] Further, the relay assembly includes a first power relay, a second power relay and a PME protection relay;

[0017] The first power relay is located between the three-phase seat and the second side of the substrate, and the first power relay is welded to the first pad, the second pad, and the third pad of the substrate; the first pad is used to electrically connect to the phase A line of the power transmission line, the second pad is used to electrically connect to the phase B line of the power transmission line, and the third pad is used to electrically connect to the three-phase seat;

[0018] The second power relay is located between the three-phase seat and the third side of the substrate, and the second power relay is welded to the fourth pad, the fifth pad, and the sixth pad of the substrate, the fourth pad being used to electrically connect to the C-phase line in the power transmission line, the fifth pad being used to electrically connect to the neutral line in the power transmission line, and the sixth pad being used to electrically connect to the three-phase seat;

[0019] The PME protection relay is located between the three-phase seat and the fourth side of the substrate. The PME protection relay is welded to the seventh and eighth pads of the substrate. The seventh pad is used to be electrically connected to the protective ground wire in the power transmission line, and the eighth pad is used to be electrically connected to the three-phase seat.

[0020] Furthermore, the PCB board includes a first terminal, a second terminal, a third terminal, a fourth terminal and a fifth terminal;

[0021] The first terminal and the second terminal are arranged close to the input end of the first power relay, the first terminal is used to connect to the first welding pad, and the second terminal is used to connect to the second welding pad;

[0022] The third terminal and the fourth terminal are arranged close to the input end of the second power relay, the third terminal is used to connect to the fourth welding pad, and the fourth terminal is used to connect to the fifth welding pad;

[0023] The fifth terminal is provided close to the input terminal of the PME protection relay and is used for connecting to the seventh welding pad.

[0024] Furthermore, a metal circuit is provided on the substrate; the first terminal and the first solder pad, the second terminal and the second solder pad, the third terminal and the fourth solder pad, the fourth terminal and the fifth solder pad, the fifth terminal and the seventh solder pad, and the three-phase seat and the third solder pad, the sixth solder pad and the eighth solder pad are all electrically connected through the metal circuit.

[0025] Furthermore, the substrate includes at least two conductive layers; each conductive layer is provided with a metal circuit; and the metal circuits between different conductive layers are electrically connected through metal vias between the conductive layers.

[0026] Furthermore, the conductive layer at the bottom layer of the substrate is also provided with a copper sheet electrically connected to the metal circuit.

[0027] Furthermore, the PCB board further includes a first mutual inductor, a second mutual inductor and a third mutual inductor;

[0028] The first mutual inductor is arranged opposite to the first terminal, and the A-phase line passes through the first mutual inductor and is electrically connected to the first terminal;

[0029] The second mutual inductor is arranged opposite to the second terminal, and the B-phase line passes through the second mutual inductor and is electrically connected to the second terminal;

[0030] The third mutual inductor is arranged opposite to the third terminal, and the C-phase line passes through the third mutual inductor and is electrically connected to the third terminal;

[0031] The distance between the first mutual inductor and the first terminal, the distance between the second mutual inductor and the second terminal, and / or the distance between the third mutual inductor and the third terminal are all greater than 10 mm.

[0032] Furthermore, the housing includes an upper housing and a lower housing;

[0033] The substrate is arranged on the lower shell, the upper shell is provided with a first opening, and the first opening is arranged opposite to the three-phase seat; the charging gun is electrically connected to the three-phase seat through the first opening.

[0034] Furthermore, the charging gun holder further includes a socket protection cover and a hinge assembly; the socket protection cover is rotatably connected to the upper housing via the hinge assembly, and the socket protection cover can cover the first opening in a closed position and expose the first opening in an open position;

[0035] A buffer layer is provided on the inner side of the socket protection cover, and the buffer layer is pressed against the edge of the first opening in the closed position.

[0036] An embodiment of the present invention provides a charging gun holder, which includes a shell and a PCB board; a wire hole is provided on the first side of the shell, which is used to pass the power transmission line; the PCB board includes a substrate, a three-phase seat and a relay assembly; the substrate is arranged in the shell, and the first side of the substrate is arranged opposite to the inner wall of the first side of the shell; the three-phase seat is located on the side of the substrate close to the first side, and is used to connect the charging gun; the relay assembly is arranged on the substrate, distributed on the periphery of the three-phase seat, and is electrically connected to the three-phase seat and the power transmission line passing through the wire hole, and is used to turn on or off the power transmission line and the three-phase seat, so that by directly welding the three-phase seat to the substrate, the relay assembly is arranged on the substrate, distributed on the periphery of the three-phase seat, and is arranged close to the three-phase seat, so that when the power transmission line passes through the wire hole and is electrically connected to the relay assembly, the power supply distance between the power transmission line and the relay assembly, and between the relay assembly and the three-phase seat is reduced, the current path is shortened, and energy loss and cost are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 This is a schematic diagram of a charging gun holder according to an embodiment of the present invention;

[0039] Figure 2 is another schematic diagram of a charging gun holder according to one embodiment of the present invention;

[0040] Figure 3 is another schematic diagram of a charging gun holder according to one embodiment of the present invention;

[0041] Figure 4 FIG. 4 is a schematic cross-sectional view of a substrate in one embodiment of the present invention.

[0042] In the figure: 1. Shell; 11. Wire hole; 12. First opening; 2. PCB board; 21. Base plate; 211. Metal line; 212. Metal via; 213. Copper sheet; 22. Three-phase socket; 221. Socket body; 222. Socket terminal; 23. Relay assembly; 231. First power relay; 232. Second power relay; 233. PME protection relay; 241. First terminal; 242. Second terminal; 243. Third terminal; 244. Fourth terminal; 245. Fifth terminal; 251. First mutual inductor; 252. Second mutual inductor; 253. Third mutual inductor; 3. Socket protection cover; 4. Hinge assembly. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] It should be understood that the present invention can be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the invention to those skilled in the art. In the drawings, the dimensions and relative dimensions of layers and regions may be exaggerated for clarity. Like reference numerals denote like elements throughout.

[0045] It should be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" another element or layer, it may be directly on, adjacent to, connected to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are merely used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Thus, a first element, component, region, layer, or part discussed below may be represented as a second element, component, region, layer, or part without departing from the teachings of the present invention.

[0046] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein for convenience of description to describe the relationship of one element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, the spatially relative terms are intended to include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, then the elements or features described as "under" or "beneath" or "beneath" the other elements will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both the upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0047] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. When used herein, the singular forms "a", "an", and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0048] In order to fully understand the present invention, detailed structures and steps will be provided in the following description to illustrate the technical solutions proposed by the present invention. Preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other implementations.

[0049] This embodiment provides a charging gun holder, such as Figure 1 As shown, it includes a shell 1 and a PCB board 2; a wire hole 11 is provided on the first side of the shell 1, and the wire hole 11 is used to pass the power transmission line; the PCB board 2 includes a substrate 21, a three-phase seat 22 and a relay assembly 23; the substrate 21 is arranged in the shell 1, and the first side of the substrate 21 is arranged opposite to the inner wall of the first side of the shell 1; the three-phase seat 22 is located on the side of the substrate 21 close to the first side, and is used to connect the charging gun; the relay assembly 23 is arranged on the substrate 21, distributed on the periphery of the three-phase seat 22, and is electrically connected to the three-phase seat 22 and the power transmission line passing through the wire hole 11, and is used to turn on or off the power transmission line and the three-phase seat 22.

[0050] The power transmission line includes a three-phase five-wire transmission line. Exemplarily, the power transmission line includes a phase A line, a phase B line, a phase C line, a neutral line, and a protective ground line.

[0051] As an example, the back of the housing 1 is provided with a mounting structure (not shown), which allows the charging gun holder to be mounted in a predetermined location via the mounting structure. The predetermined location may be a wall. It is understood that the mounting structure can utilize techniques known to those skilled in the art. The power transmission line connects to the mains power grid or a home photovoltaic system.

[0052] As an example, the substrate 21 is arranged in the shell 1, and the first side of the substrate 21 is arranged opposite to the inner wall of the first side of the shell 1. The three-phase seat 22 is located on the side of the substrate 21 close to the first side, and is used to connect the charging gun, so that the three-phase seat 22 is directly welded on the substrate 21, and at the same time the three-phase seat 22 is close to the first side of the substrate 21, so that the three-phase seat 22 and the relay assembly 23 outside the three-phase seat 22 are close to the first side and provided with a wire hole 11, so that when the power transmission line passes through the wire hole 11 and is electrically connected to the relay assembly 23, the power supply distance is reduced, the current path is shortened, and energy loss and cost are reduced.

[0053] As an example, the relay assembly 23 is arranged on the substrate 21, distributed around the three-phase seat 22, and arranged close to the three-phase seat 22. It is electrically connected to the three-phase seat 22 and the power transmission line passing through the wire hole 11, and is used to turn on or off the power transmission line and the three-phase seat 22, reducing the current path between the relay assembly 23 and the three-phase seat 22, and further reducing energy loss.

[0054] It can be understood that the PCB board 2 is also provided with a main control module, such as an MCU, which is used to collect charging information corresponding to the charging gun to control the relay component 23 to be turned on or off according to the charging information, thereby ensuring safety.

[0055] In this embodiment, the charging gun holder includes a shell 1 and a PCB board 2; a wire hole 11 is provided on the first side of the shell 1, and the wire hole 11 is used to pass the power transmission line; the PCB board 2 includes a substrate 21, a three-phase seat 22 and a relay assembly 23; the substrate 21 is arranged in the shell 1, and the first side of the substrate 21 is arranged opposite to the inner wall of the first side of the shell 1; the three-phase seat 22 is located on the side of the substrate 21 close to the first side, and is used to connect the charging gun; the relay assembly 23 is arranged on the substrate 21, distributed on the periphery of the three-phase seat 22, and is connected to the three-phase seat 22 and the wire hole 11. The power supply transmission line passing through the wire hole 11 is electrically connected and is used to turn on or off the power supply transmission line and the three-phase seat 22. By directly welding the three-phase seat 22 to the substrate 21, the relay assembly 23 is set on the substrate 21, distributed around the three-phase seat 22, and set close to the three-phase seat 22. When the power supply transmission line passes through the wire hole 11 and is electrically connected to the relay assembly 23, the power supply distance between the power supply transmission line and the relay assembly 23, and between the relay assembly 23 and the three-phase seat 22 is reduced, the current path is shortened, and energy loss and cost are reduced.

[0056] In one embodiment, if Figure 1 As described, the three-phase socket 22 includes a socket body 221, a socket terminal 222 and a welding pin (not shown in the figure); the socket terminal 222 is arranged on the front of the socket body 221, and the welding pin is arranged on the back of the socket body 221; the socket terminal 222 is electrically connected to the welding pin; and the welding pin is welded to the power supply pad on the substrate 21.

[0057] As an example, the socket terminals 222 include a Phase A terminal, a Phase B terminal, a Phase C terminal, a Neutral terminal, and a Protective Earth terminal. The Protective Earth terminal is located in the center of the socket body 221. The Phase A, Phase B, Phase C, and Neutral terminals are arranged in sequence around the Protective Earth terminal. It is understood that the Phase A, Phase B, Phase C, Neutral, and Protective Earth terminals are female terminals, and the charging gun is equipped with pins corresponding to these female terminals. When the charger is connected to the three-phase socket 22, the pins on the charging gun are connected to the Phase A, Phase B, Phase C, Neutral, and Protective Earth terminals, respectively.

[0058] In this embodiment, the socket terminal 222 is arranged on the front of the socket body 221, and the welding pin is arranged on the back of the socket body 221; the socket terminal 222 is electrically connected to the welding pin; and the welding pin is welded to the power supply pad on the substrate 21, thereby ensuring the firmness of the socket body 221 and the socket terminal 222 welded on the substrate 21.

[0059] In one embodiment, if Figure 1 As shown, the relay assembly 23 includes a first power relay 231, a second power relay 232 and a PME protection relay 233; the first power relay 231 is located between the three-phase seat 22 and the second side of the substrate 21, and the first power relay 231 is welded to the first pad, the second pad and the third pad of the substrate 21; the first pad is used to electrically connect to the A phase line of the power transmission line, the second pad is used to electrically connect to the B phase line of the power transmission line, and the third pad is used to electrically connect to the three-phase seat 22; the second power relay 232 is located on the third side of the three-phase seat 22 and the substrate 21 The second power relay 232 is welded to the fourth pad, the fifth pad and the sixth pad of the substrate 21, the fourth pad is used to be electrically connected to the C phase line in the power transmission line, the fifth pad is used to be electrically connected to the neutral line in the power transmission line, and the sixth pad is used to be electrically connected to the three-phase seat 22; the PME protection relay 233 is located between the three-phase seat 22 and the fourth side of the substrate 21, the PME protection relay 233 is welded to the seventh pad and the eighth pad of the substrate 21, the seventh pad is used to be electrically connected to the protective ground line in the power transmission line, and the eighth pad is used to be electrically connected to the three-phase seat 22.

[0060] As an example, the third pad includes an A-phase connecting pad and a B-phase connecting pad, and the first power relay 231 includes two groups of switches, the first group of switches connects the first pad and the A-phase connecting pad, and the A-phase connecting pad is used to connect the A-phase terminal in the three-phase seat 22, and the second group of switches connects the second pad and the B-phase connecting pad, and the B-phase connecting pad is used to connect the B-phase terminal in the three-phase seat 22.

[0061] As an example, the sixth pad includes a C-phase connection pad and a neutral line connection pad, and the second power relay 232 includes two groups of switches, the first group of switches connects the fourth pad and the C-phase connection pad, and the C-phase connection pad is used to connect the C-phase terminal in the three-phase seat 22, and the second group of switches connects the fifth pad and the neutral line connection pad, and the neutral line connection pad is used to connect the neutral line terminal in the three-phase seat 22.

[0062] As an example, the substrate 21 is rectangular and includes a first side, a second side, a third side and a fourth side. The first side is arranged opposite to the inner wall of the first side of the shell 1, the fourth side is away from the first side and is arranged opposite to the first side, and the second side and the third side are arranged opposite to each other.

[0063] In this embodiment, the first power relay 231 is located between the three-phase seat 22 and the second side of the substrate 21, the second power relay 232 is located between the three-phase seat 22 and the third side of the substrate 21, and the PME protection relay 233 is located between the three-phase seat 22 and the fourth side of the substrate 21. This reduces the current path from the first power relay 231, the second power relay 232, and the PME protection relay 233 to the three-phase seat 22, thereby reducing losses.

[0064] In one embodiment, the PCB board 2 includes a first terminal 241, a second terminal 242, a third terminal 243, a fourth terminal 244, and a fifth terminal 245; the first terminal 241 and the second terminal 242 are arranged near the input end of the first power relay 231, the first terminal 241 is used to connect to the first soldering pad, and the second terminal 242 is used to connect to the second soldering pad; the third terminal 243 and the fourth terminal 244 are arranged near the input end of the second power relay 232, the third terminal 243 is used to connect to the fourth soldering pad, and the fourth terminal 244 is used to connect to the fifth soldering pad; the fifth terminal 245 is arranged near the input end of the PME protection relay 233 and is used to connect to the seventh soldering pad.

[0065] As an example, when wiring the charging gun holder, the power transmission line is passed through the wire hole 11 of the shell 1, and the A phase line, B phase line, C phase line, neutral line and protective ground line in the power transmission line are respectively connected to the first terminal 241, the second terminal 242, the third terminal 243, the fourth terminal 244 and the fifth terminal 245, thereby establishing an electrical connection relationship with the first power relay 231, the second power relay 232 and the PME protection relay 233, and ensuring the firmness of the connection of the A phase line, B phase line, C phase line, neutral line and protective ground line.

[0066] For example, the A-phase line, the B-phase line, the C-phase line, the neutral line and the protective ground line can be pressed onto the first terminal 241 , the second terminal 242 , the third terminal 243 , the fourth terminal 244 and the fifth terminal 245 by screws.

[0067] In one embodiment, a metal circuit 211 is further provided on the substrate 21; the first terminal 241 and the first solder pad, the second terminal 242 and the second solder pad, the third terminal 243 and the fourth solder pad, the fourth terminal 244 and the fifth solder pad, the fifth terminal 245 and the seventh solder pad, and the three-phase seat 22 and the third solder pad, the sixth solder pad and the eighth solder pad are all electrically connected through the metal circuit 211.

[0068] As an example, the metal circuit 211 includes copper foil. In this embodiment, according to the designed circuit routing, the metal circuit 211 is processed on the substrate 21, connecting the first terminal 241 with the first solder pad, the second terminal 242 with the second solder pad, the third terminal 243 with the fourth solder pad, the fourth terminal with the fifth solder pad, the fifth terminal 245 with the seventh solder pad, and the three-phase socket 22 with the third solder pad, the sixth solder pad, and the eighth solder pad. Compared with the related art in which the socket terminal 222 is assembled on the housing 1 of the charging gun socket and electrically connected to the control motherboard inside the charging gun socket through a cable, the present application can reduce the power supply distance, shorten the current path, and thus reduce energy loss and cost.

[0069] In one embodiment, the substrate 21 includes at least two conductive layers, such as Figure 4 As shown, it includes layers L1 to L4; each conductive layer is provided with a metal circuit 211; the metal circuits 211 between different conductive layers are electrically connected through metal vias 212 between the conductive layers.

[0070] As an example, the substrate 21 includes at least two conductive layers; each conductive layer is provided with a metal circuit 211; the metal circuits 211 between different conductive layers are electrically connected through metal vias 212 between the conductive layers, thereby ensuring that when the three-phase seat 22 is set on the substrate 21, the metal circuits 211 on the substrate 21 can have a large current capacity to ensure safety.

[0071] In one embodiment, the bottommost conductive layer of the substrate 21 is further provided with a copper sheet 213 electrically connected to the metal circuit 211 .

[0072] As an example, the number and size of the copper sheets 213 can be set according to actual needs. Optionally, the thickness of the copper sheets 213 is preferably 1 mm.

[0073] As an example, the bottommost conductive layer of the substrate 21 is further provided with a copper sheet 213 electrically connected to the metal circuit 211, thereby increasing the heat dissipation area of ​​the metal circuit 211 and preventing the substrate 21 from overheating during charging.

[0074] In one embodiment, the PCB board 2 further includes a first mutual inductor 251, a second mutual inductor 252, and a third mutual inductor 253; the first mutual inductor 251 is arranged opposite to the first terminal 241, and the A phase line passes through the first mutual inductor 251 and is electrically connected to the first terminal 241; the second mutual inductor 252 is arranged opposite to the second terminal 242, and the B phase line passes through the second mutual inductor 252 and is electrically connected to the second terminal 242; the third mutual inductor 253 is arranged opposite to the third terminal 243, and the C phase line passes through the third mutual inductor 253 and is electrically connected to the third terminal 243; the distance between the first mutual inductor 251 and the first terminal 241, the distance between the second mutual inductor 252 and the second terminal 242, and / or the distance between the third mutual inductor 253 and the third terminal 243 are all greater than 10 mm.

[0075] As an example, a first transformer 251, a second transformer 252 and a third transformer 253; the first transformer 251 is arranged opposite to the first terminal 241, and the A phase line passes through the first transformer 251 and is electrically connected to the first terminal 241; the second transformer 252 is arranged opposite to the second terminal 242, and the B phase line passes through the second transformer 252 and is electrically connected to the second terminal 242; the third transformer 253 is arranged opposite to the third terminal 243, and the C phase line passes through the third transformer 253 and is electrically connected to the third terminal 243, so as to collect the charging current through the first transformer 251, the second transformer 252 and the third transformer 253.

[0076] As will be appreciated, the first transformer 251, the second transformer 252, and the third transformer 253 are also electrically connected to the main control module of the PCB board 2, feeding the charging current back to the main control module. This allows the main control module to control the relay assembly 23 based on the charging current to disconnect when the charging current is abnormal, thereby ensuring safety. In this embodiment, the distance between the first transformer 251 and the first terminal 241, the distance between the second transformer 252 and the second terminal 242, and / or the distance between the third transformer 253 and the third terminal 243 are all greater than 10 mm, ensuring sufficient wiring space for the first terminal 241, the second terminal 242, and the third terminal 243.

[0077] In one embodiment, if Figure 2 As shown, the housing 1 includes an upper housing and a lower housing; the substrate 21 is arranged on the lower housing, the upper housing is provided with a first opening 12, and the first opening 12 is arranged opposite to the three-phase seat 22; the charging gun passes through the first opening 12 and is electrically connected to the three-phase seat 22.

[0078] In this embodiment, the shell 1 includes an upper shell and a lower shell; the substrate 21 is arranged on the lower shell, and the upper shell is provided with a first opening 12, which is arranged opposite to the three-phase socket 22; the charging gun passes through the first opening 12 and is electrically connected to the three-phase socket 22 to ensure that the charging gun can be normally connected to the three-phase socket 22.

[0079] In one embodiment, if Figure 3 As shown, the charging gun holder also includes a socket protection cover 3 and a hinge assembly 4; the socket protection cover 3 is rotatably connected to the upper shell through the hinge assembly 4, and the socket protection cover 3 can cover the first opening 12 in the closed position and expose the first opening 12 in the open position; a buffer layer is provided on the inner side of the socket protection cover 3, and the buffer layer is pressed against the edge of the first opening 12 in the closed position.

[0080] As an example, when charging is needed, the socket protection cover 3 is rotated to the open position to expose the first opening 12 so that the charging gun passes through the first opening 12 and is electrically connected to the three-phase socket 22. When charging is completed, the socket protection cover 3 is rotated to the closed position to cover the first opening 12, thereby preventing foreign matter from entering the electrical connection area between the three-phase socket 22 and the substrate 21, preventing power line short circuit abnormalities, and improving safety.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A charging gun holder, characterized in that: Including housing and PCB board; A wire hole is provided on the first side surface of the housing, and the wire hole is used to pass the power transmission line; The PCB board includes a substrate, a three-phase seat and a relay assembly; The substrate is disposed in the housing, and the first side edge of the substrate is disposed opposite to the inner wall of the first side surface of the housing; The three-phase seat is located on a side of the substrate close to the first side and is used to connect a charging gun; The relay assembly is arranged on the substrate, distributed around the three-phase seat, and electrically connected to the three-phase seat and the power transmission line passing through the wire hole, and is used to connect or disconnect the power transmission line and the three-phase seat; The relay assembly includes a first power relay, a second power relay and a PME protection relay; The first power relay is located between the three-phase seat and the second side of the substrate, and the first power relay is welded to the first pad, the second pad, and the third pad of the substrate; the first pad is used to electrically connect to the phase A line of the power transmission line, the second pad is used to electrically connect to the phase B line of the power transmission line, and the third pad is used to electrically connect to the three-phase seat; The second power relay is located between the three-phase seat and the third side of the substrate, and the second power relay is welded to the fourth pad, the fifth pad, and the sixth pad of the substrate, the fourth pad being used to electrically connect to the C-phase line in the power transmission line, the fifth pad being used to electrically connect to the neutral line in the power transmission line, and the sixth pad being used to electrically connect to the three-phase seat; The PME protection relay is located between the three-phase seat and the fourth side of the substrate, and the PME protection relay is welded to the seventh and eighth pads of the substrate, the seventh pad is used to be electrically connected to the protective ground wire in the power transmission line, and the eighth pad is used to be electrically connected to the three-phase seat; The PCB board includes a first terminal, a second terminal, a third terminal, a fourth terminal and a fifth terminal; The first terminal and the second terminal are arranged close to the input end of the first power relay, the first terminal is used to connect to the first welding pad, and the second terminal is used to connect to the second welding pad; The third terminal and the fourth terminal are arranged close to the input end of the second power relay, the third terminal is used to connect to the fourth welding pad, and the fourth terminal is used to connect to the fifth welding pad; The fifth terminal is provided close to the input terminal of the PME protection relay and is used for connecting to the seventh welding pad.

2. The charging gun holder according to claim 1, characterized in that: The three-phase socket includes a socket body, socket terminals and welding pins; The socket terminal is arranged on the front of the socket body, and the welding pin is arranged on the back of the socket body; The socket terminal is electrically connected to the welding pin; The welding pins are welded to the power supply pads on the substrate.

3. The charging gun holder according to claim 1, characterized in that: A metal circuit is also provided on the substrate; the first terminal and the first soldering pad, the second terminal and the second soldering pad, the third terminal and the fourth soldering pad, the fourth terminal and the fifth soldering pad, the fifth terminal and the seventh soldering pad, and the three-phase seat and the third soldering pad, the sixth soldering pad and the eighth soldering pad are all electrically connected through the metal circuit.

4. The charging gun holder according to claim 3, characterized in that: The substrate comprises at least two conductive layers; each conductive layer is provided with a metal circuit; the metal circuits between different conductive layers are electrically connected through metal vias between the conductive layers.

5. The charging gun holder according to claim 4, characterized in that: The conductive layer at the bottom of the substrate is further provided with a copper sheet electrically connected to the metal circuit.

6. The charging gun holder according to claim 1, characterized in that: The PCB board also includes a first mutual inductor, a second mutual inductor and a third mutual inductor; The first mutual inductor is arranged opposite to the first terminal, and the A-phase line passes through the first mutual inductor and is electrically connected to the first terminal; The second mutual inductor is arranged opposite to the second terminal, and the B-phase line passes through the second mutual inductor and is electrically connected to the second terminal; The third mutual inductor is arranged opposite to the third terminal, and the C-phase line passes through the third mutual inductor and is electrically connected to the third terminal; The distance between the first mutual inductor and the first terminal, the distance between the second mutual inductor and the second terminal, and / or the distance between the third mutual inductor and the third terminal are all greater than 10 mm.

7. The charging gun holder according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing; The substrate is arranged on the lower shell, the upper shell is provided with a first opening, and the first opening is arranged opposite to the three-phase seat; the charging gun is electrically connected to the three-phase seat through the first opening.

8. The charging gun holder according to claim 7, characterized in that: The charging gun holder further includes a socket protection cover and a hinge assembly; the socket protection cover is rotatably connected to the upper housing via the hinge assembly, and the socket protection cover can cover the first opening in a closed position and expose the first opening in an open position; A buffer layer is provided on the inner side of the socket protection cover, and the buffer layer is pressed against the edge of the first opening in the closed position.

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