Charging gun base

Abstract

The invention discloses a charging gun base. The charging gun base comprises a shell and a PCB. A wire passing hole is formed in the first side surface of the shell, and a power supply transmission line passes through the wire passing hole; the PCB comprises a substrate, a three-phase seat and a relay assembly; the substrate is arranged in the shell, and the first side edge of the substrate is opposite to the inner wall of the first side surface of the shell; the three-phase base is located on the side, close to the first side edge, of the substrate and used for being connected with a charging gun. The relay assemblies are arranged on the substrate, distributed on the periphery of the three-phase seat, electrically connected with the three-phase seat and the power supply transmission line penetrating through the wire passing hole and used for connecting or disconnecting the power supply transmission line and the three-phase seat, the three-phase seat is directly welded to the substrate, and the relay assemblies are arranged on the substrate, distributed on the periphery of the three-phase seat and arranged close to the three-phase seat. Therefore, when the power supply transmission line penetrates through the line passing hole to be electrically connected with the relay assembly, the power supply distance between the power supply transmission line and the relay assembly and the power supply distance between the relay assembly and the three-phase seat are reduced, and energy loss and cost are reduced.

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 charging modern electrical equipment, three-phase charging is widely used in scenarios such as electric vehicle charging piles and industrial equipment charging due to its high power transmission capability. The traditional three-phase charging system includes a charging gun holder and a charging gun. The charging gun connects the charging gun holder and the electric vehicle, and draws power from the charging gun holder to charge the electric vehicle.

[0003] However, the socket terminal on the existing charging gun holder is assembled on the housing of the charging gun holder and electrically connected to the control mainboard inside the charging gun holder through a cable, which 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, in long-term use, many connection points are prone to looseness, poor contact and other faults, affecting charging stability. In addition, the extra cables and adapter plates need to occupy 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

[0004] The embodiment of the present invention provides a charging gun holder to solve the problems of poor stability and high cost of the existing charging gun holder.

[0005] A charging gun holder, comprising a shell and a PCB board; A wire hole is provided on the first side 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 one side of the substrate close to the first side edge 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.

[0006] Furthermore, the three-phase socket comprises a socket body, socket terminals and welding pins; The socket terminal is arranged on the front side of the socket body, and the welding pin is arranged on the back side 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.

[0007] Further, 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 be electrically connected to the A phase line of the power transmission line, the second pad is used to be electrically connected to the B phase line of the power transmission line, and the third pad is used to be electrically connected 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 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; 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 pad and the eighth pad 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.

[0008] Further, 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 the first pad, and the second terminal is used to connect the second 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 the fourth pad, and the fourth terminal is used to connect the fifth pad; The fifth terminal is arranged close to the input terminal of the PME protection relay and is used for connecting the seventh welding pad.

[0009] Furthermore, 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.

[0010] 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.

[0011] Furthermore, the bottommost conductive layer of the substrate is also provided with a copper sheet electrically connected to the metal circuit.

[0012] Furthermore, 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 wiring terminal, and the B-phase line passes through the second mutual inductor and is electrically connected to the second wiring 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.

[0013] Further, the housing includes 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 passes through the first opening and is electrically connected to the three-phase seat.

[0014] Furthermore, the charging gun seat further comprises a socket protection cover and a hinge assembly; the socket protection cover is rotatably connected to the upper shell through 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.

[0015] An embodiment of the present invention provides a charging gun holder, which includes a shell and a PCB board; a first side surface of the shell is provided with a wire hole, 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 edge of the substrate is arranged opposite to the inner wall of the first side edge of the shell; the three-phase seat is located on a side of the substrate close to the first side edge, 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

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0017] Figure 1 is a schematic diagram of a charging gun holder in one embodiment of the present invention; Figure 2 is another schematic diagram of a charging gun holder in one embodiment of the present invention; Figure 3 is another schematic diagram of a charging gun holder in one embodiment of the present invention; Figure 4 FIG. 4 is a schematic cross-sectional view of a substrate in one embodiment of the present invention.

[0018] In the figure: 1. shell; 11. wire hole; 12. first opening; 2. PCB board; 21. substrate; 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

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0021] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, 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 only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0022] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0023] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" 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.

[0024] In order to fully understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0025] This embodiment provides a charging gun holder, such as Figure 1 As shown, it includes a shell 1 and a PCB board 2; a first side surface of the shell 1 is provided with a wire hole 11, 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 edge of the substrate 21 is arranged opposite to the inner wall of the first side edge of the shell 1; the three-phase seat 22 is located on the side of the substrate 21 close to the first side edge, 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.

[0026] The power transmission line includes a three-phase five-wire transmission line. Exemplarily, the power transmission line includes an A-phase line, a B-phase line, a C-phase line, a neutral line, and a protective ground line.

[0027] As an example, the back of the housing 1 is provided with a mounting structure (not shown in the figure), and the charging gun holder is installed at a preset position through the mounting structure. The preset position may be a wall. It is understandable that the mounting structure may adopt a technology known to those skilled in the art. The power transmission line is connected to the mains power grid or the home photovoltaic system.

[0028] 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.

[0029] 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, thereby reducing the current path between the relay assembly 23 and the three-phase seat 22 and further reducing energy loss.

[0030] It can be understood that a main control module, such as an MCU, is also provided on the PCB board 2 for collecting 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.

[0031] In this embodiment, the charging gun holder includes a shell 1 and a PCB board 2; a first side surface of the shell 1 is provided with a wire hole 11, 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 edge of the substrate 21 is arranged opposite to the inner wall of the first side edge of the shell 1; the three-phase seat 22 is located on the side of the substrate 21 close to the first side edge, 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 connected with the three-phase seat 22 and the wire hole 11. The power transmission line passing through the wire hole 11 is electrically connected and used to turn on or off the power transmission line and the three-phase seat 22, so that the three-phase seat 22 is directly welded to the substrate 21, and 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, 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 between the power transmission line and the relay assembly 23, and between the relay assembly 23 and the three-phase seat 22 is reduced, shortening the current path, thereby reducing energy loss and cost.

[0032] In one embodiment, if Figure 1 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 side of the socket body 221, and the welding pin is arranged on the back side 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.

[0033] As an example, the socket terminal 222 includes a phase A terminal, a phase B terminal, a phase C terminal, a neutral line terminal and a protective ground terminal; the protective ground terminal is located in the central area of ​​the socket body 221; the phase A terminal, the phase B terminal, the phase C terminal and the neutral line terminal are arranged around the protective ground terminal in sequence. It can be understood that the phase A terminal, the phase B terminal, the phase C terminal, the neutral line terminal and the protective ground terminal are female terminals, and the charging gun is provided with pins corresponding to the female terminals. When the charger is connected to the three-phase socket 22, the pins on the charging gun are respectively connected to the phase A terminal, the phase B terminal, the phase C terminal, the neutral line terminal and the protective ground terminal.

[0034] In this embodiment, the socket terminal 222 is arranged on the front side of the socket body 221, and the welding pin is arranged on the back side of the socket body 221; the socket terminal 222 is electrically connected to the welding pin; 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.

[0035] 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 in 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 between the three-phase seat 22 and the third side of 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.

[0036] As an example, the third pad includes an A-phase connecting pad and a B-phase connecting pad, 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, 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, the B-phase connecting pad is used to connect the B-phase terminal in the three-phase seat 22.

[0037] As an example, the sixth pad includes a C-phase connecting pad and a neutral line connecting pad, the second power relay 232 includes two groups of switches, the first group of switches connects the fourth pad and the C-phase connecting pad, the C-phase connecting 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 connecting pad, the neutral line connecting pad is used to connect the neutral line terminal in the three-phase seat 22.

[0038] 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 arranged opposite to the first side, and the second side and the third side are arranged opposite to each other.

[0039] 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, so that 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 is reduced, thereby reducing the loss.

[0040] 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 the first soldering pad, and the second terminal 242 is used to connect 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 the fourth soldering pad, and the fourth terminal 244 is used to connect 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 the seventh soldering pad.

[0041] As an example, when wiring the charging gun socket, 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, the B phase line, the C phase line, the neutral line and the protective ground line.

[0042] Exemplarily, 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.

[0043] In one embodiment, a metal circuit 211 is further provided on the substrate 21; the first terminal 241 and the first pad, the second terminal 242 and the second pad, the third terminal 243 and the fourth pad, the fourth terminal 244 and the fifth pad, the fifth terminal 245 and the seventh pad, and the three-phase seat 22 and the third pad, the sixth pad and the eighth pad are all electrically connected through the metal circuit 211.

[0044] 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 and the first pad, the second terminal 242 and the second pad, the third terminal 243 and the fourth pad, the fourth terminal and the fifth pad, the fifth terminal 245 and the seventh pad, and the three-phase seat 22 and the third pad, the sixth pad and the eighth pad, so that compared with the related art in which the socket terminal 222 is assembled on the housing 1 of the charging gun seat, and is electrically connected to the control mainboard inside the charging gun seat through the cable, the present application can reduce the power supply distance, shorten the current path, and thus reduce energy loss and cost.

[0045] 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.

[0046] 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 larger current carrying capacity to ensure safety.

[0047] 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 .

[0048] 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.

[0049] 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.

[0050] In one embodiment, the PCB board 2 also 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.

[0051] As an example, 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, so as to collect the charging current through the first mutual inductor 251, the second mutual inductor 252 and the third mutual inductor 253.

[0052] It can be understood that the first mutual inductor 251, the second mutual inductor 252 and the third mutual inductor 253 are also electrically connected to the main control module of the PCB board 2, and the charging current is fed back to the main control module, so that the main control module controls the relay assembly 23 to disconnect when the charging current is abnormal according to the charging current, thereby ensuring safety. In this embodiment, 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, so that the first terminal 241, the second terminal 242 and the third terminal 243 have sufficient wiring space.

[0053] 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 socket 22; the charging gun passes through the first opening 12 and is electrically connected to the three-phase socket 22.

[0054] 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, and the first opening 12 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.

[0055] 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.

[0056] 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 can pass through the first opening 12 and be 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.

[0057] 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 the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A charging gun holder, characterized in that: Including a housing and a PCB board; A wire hole is provided on the first side 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 one side of the substrate close to the first side edge 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.

2. The charging gun holder according to claim 1, characterized in that: The three-phase socket comprises a socket body, socket terminals and welding pins; The socket terminal is arranged on the front side of the socket body, and the welding pin is arranged on the back side 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: 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 be electrically connected to the A phase line of the power transmission line, the second pad is used to be electrically connected to the B phase line of the power transmission line, and the third pad is used to be electrically connected 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 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; 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 pad and the eighth pad 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.

4. The charging gun holder according to claim 3, characterized in that: 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 the first pad, and the second terminal is used to connect the second 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 the fourth pad, and the fourth terminal is used to connect the fifth pad; The fifth terminal is arranged close to the input terminal of the PME protection relay and is used for connecting the seventh welding pad.

5. The charging gun holder according to claim 4, characterized in that: A metal circuit is also provided on the substrate; the first terminal and the first pad, the second terminal and the second pad, the third terminal and the fourth pad, the fourth terminal and the fifth pad, the fifth terminal and the seventh pad, and the three-phase seat and the third pad, the sixth pad and the eighth pad are all electrically connected through the metal circuit.

6. The charging gun holder according to claim 5, 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.

7. The charging gun holder according to claim 6, characterized in that: The bottommost conductive layer of the substrate is also provided with a copper sheet electrically connected to the metal circuit.

8. The charging gun holder according to claim 4, 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 wiring terminal, and the B-phase line passes through the second mutual inductor and is electrically connected to the second wiring 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.

9. 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 passes through the first opening and is electrically connected to the three-phase seat.

10. The charging gun holder according to claim 9, characterized in that: The charging gun seat further includes a socket protection cover and a hinge assembly; the socket protection cover is rotatably connected to the upper shell through 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.

Images