Alternating current charging pile and adapter

Abstract

The utility model relates to an AC charging pile and an adapter. The adapter comprises a shell and a first connector which is exposed outside the shell and is matched with a power supply socket, and further comprises a sampling signal interface, a maximum current selection circuit arranged in the shell, and a second connector matched with a charging pile plug. The maximum current selection circuit is connected with the charging pile through the sampling signal interface and used for outputting a voltage signal to the charging pile so that the charging pile can correspondingly adjust the maximum output current of the charging pile according to the voltage signal. The adapter of the utility model can provide a plurality of limit options of the maximum output current of the AC charging pile for a user, so that the user can select the limit options.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to an AC charging pile and an adapter. Background Art

[0002] In the field of electric vehicles, when using AC charging piles to charge electric vehicles, the relevant lines and equipment cannot meet the power supply current requirements of the AC charging piles. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an AC charging pile and an adapter.

[0004] The technical solution adopted by the utility model to solve the technical problem is: an AC charging pile adapter, comprising a shell and a first connector exposed outside the shell and matching with a power supply socket, the adapter also includes a sampling signal interface, a maximum current selection circuit arranged in the shell, and a second connector matching with a charging pile plug;

[0005] The maximum current selection circuit is connected to the charging pile through the sampling signal interface, and is used to output a voltage signal to the charging pile, so that the charging pile adjusts its maximum output current accordingly according to the voltage signal.

[0006] In the AC charging pile adapter described in the utility model, the maximum current selection circuit includes a voltage divider circuit, a first end of the voltage divider circuit is grounded, and a second end of the voltage divider circuit is connected to the sampling signal interface.

[0007] In the AC charging pile adapter described in the utility model, the voltage divider circuit includes at least two resistors and at least one switch, the first end of the resistor is grounded, and the second end of the resistor is connected to the switch to be connected to the sampling signal interface through the switch.

[0008] In the AC charging pile adapter described in the utility model, the voltage divider circuit includes a resistor R1, a resistor R2 and a shift switch, the first end of the resistor R1 and the first end of the resistor R2 are connected and grounded, and the second end of the resistor R1 and the second end of the resistor R2 are connected to the sampling signal interface via the shift switch;

[0009] When the shift switch is connected to the resistor R1, the voltage divider circuit outputs a first voltage signal;

[0010] When the shift switch is connected to the resistor R2, the voltage divider circuit outputs a second voltage signal.

[0011] In the AC charging pile adapter described in the utility model, the shift switch is a single-pole double-throw switch, the first end of the resistor R1 and the first end of the resistor R2 are connected and grounded, the second end of the resistor R1 and the second end of the resistor R2 are respectively connected to the normally closed contact and the normally open contact of the single-pole double-throw switch, and the output contact of the single-pole double-throw switch is connected to the sampling signal interface.

[0012] In the AC charging pile adapter described in the utility model, the voltage divider circuit includes at least three resistors and at least three switches, the first end of each resistor is connected to and grounded, and the second end of each resistor is connected to a switch to be connected to the sampling signal interface through the switch; each resistor determines a voltage signal.

[0013] In the AC charging pile adapter described in the utility model, the voltage signal includes at least two types, and the maximum current selection circuit can select one output; each type of the voltage signal corresponds to determining one type of the maximum output current; or

[0014] The sampling signal interface is a pin, which is used to connect through a socket matching the charging pile; or, the first connector is a pin; and the second connector is a socket.

[0015] In the AC charging pile adapter described in the utility model, the maximum current selection circuit is connected to the signal input end of the controller of the charging pile through the sampling signal interface, so that the controller adjusts the maximum output current of the charging pile according to the voltage signal.

[0016] In addition, the utility model also provides an AC charging pile, including a charging gun for connecting to a device to be charged to supply power thereto, the AC charging pile also including a plug and a controller; the plug is used to connect to the second connector of the AC charging pile adapter as described above;

[0017] The signal input end of the controller is used to connect to the sampling signal interface, and adjust the maximum output current of the charging pile according to the voltage signal.

[0018] In the AC charging pile described in the utility model, the sampling signal interface is a pin, and the AC charging pile is also provided with a jack matching the sampling signal interface, and the jack is connected to the signal input end of the controller.

[0019] The implementation of the AC charging pile and adapter of the utility model has the following beneficial effects: the adapter of the present application can provide users with multiple maximum output current limiting options of the AC charging pile for users to choose from, thereby meeting user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 This is a schematic diagram of the structure of an AC charging pile adapter according to an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 Circuit diagram of the voltage divider circuit;

[0023] Figure 3 It is a schematic diagram for explaining the interface of the adapter of some embodiments of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the AC charging pile adapter of some embodiments of the utility model;

[0025] Figure 5 is a circuit diagram of a voltage divider circuit of some embodiments of the utility model;

[0026] Figure 6 It is a front view (left) and a left view (right) of the AC charging pile adapter of some embodiments of the utility model. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0028] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is described as being "fixed to" another element, it may be directly on the other element, or one or more centered elements may exist therebetween. When an element is described as being "connected to" another element, it may be directly connected to the other element, or one or more centered elements may exist therebetween. When the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom" and the like are used to indicate an orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] It should be understood that although the words "first", "second" and the like may be used to limit components in the embodiments of the present utility model, this is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] In a preferred embodiment, reference Figure 1 The AC charging pile adapter 1 of this embodiment includes a housing and a first connector 10 exposed outside the housing and matching with the power supply socket. The adapter 1 of this embodiment also includes a sampling signal interface 13, a maximum current selection circuit 12 arranged in the housing, and a second connector 11 matching with the plug 21 of the charging pile 2. Optionally, the first connector 10 is a pin; the second connector 11 is a jack.

[0034] The maximum current selection circuit 12 is connected to the signal input terminal 22 of the charging pile 2 through the sampling signal interface 13, and is used to output a voltage signal to the charging pile 2, so that the charging pile 2 adjusts its maximum output current according to the voltage signal.

[0035] Alternatively, refer to Figure 4 The maximum current selection circuit 12 is connected to the signal input terminal 22 of the controller 23 of the charging pile 2 through the sampling signal interface 13, so that the controller 23 adjusts the maximum output current of the charging pile 2 according to the voltage signal output by the maximum current selection circuit 12.

[0036] Among them, the voltage signal includes at least two types, and the maximum current selection circuit 12 can select one output. Each voltage signal corresponds to a maximum output current. In other words, the maximum current selection circuit 12 can limit the maximum output current of the charging pile 2 by adjusting the voltage signal it outputs.

[0037] The adapter 1 of this embodiment is provided with a plurality of current limiting options through the maximum current selection circuit 12, which can limit the output current of the AC charging pile 2 before charging, further improving the safety and convenience of use for users, and also making the power grid and the charging pile 2 safer.

[0038] The working principle of the utility model is: through the physical switch (sliding switch or button switch, etc.) on the adapter 1 to adjust the voltage divider resistor on the maximum current selection circuit 12, so as to output a different signal to the charging pile end, thereby limiting the maximum output current of the charging pile 2.

[0039] In some embodiments, the maximum current selection circuit 12 includes a voltage divider circuit 121 , a first end of the voltage divider circuit 121 is grounded, and a second end of the voltage divider circuit 121 is connected to the sampling signal interface 13 .

[0040] Alternatively, the voltage divider circuit 121 includes at least two resistors and at least one switch, wherein the first end of the resistor is grounded and the second end of the resistor is connected to the switch to be connected to the sampling signal interface 13 through the switch, thereby determining the voltage signal output by the voltage divider circuit 121 .

[0041] In a specific embodiment, in combination Figure 2 and Figure 3 The voltage divider circuit 121 includes a resistor R1, a resistor R2 and a shift switch, the first end of the resistor R1 and the first end of the resistor R2 are connected to the ground, and the second end of the resistor R1 and the second end of the resistor R2 are connected to the sampling signal interface 13 via the shift switch.

[0042] When the shift switch is connected to the resistor R1 , the voltage divider circuit 121 outputs a first voltage signal.

[0043] When the shift switch is connected to the resistor R2 , the voltage divider circuit 121 outputs a second voltage signal.

[0044] That is to say, resistor R1, resistor R2 and switch K1 are internal components of adapter 1. Resistor R0, 3.3V working power supply and controller 23 are internal components of charging pile 2. Through the pins on adapter 1 and the power plug 21, the internal circuit of adapter 1 and the circuit of charging pile 2 are integrated into a whole, and then charging pile 2 performs voltage detection on the sampling points in the figure. When switch K1 on adapter 1 is connected to resistor R1, charging pile 2 determines that the maximum output current is Iout1. When switch K1 is connected to resistor R2, charging pile 2 determines that the maximum output current is Iout2. In this way, the maximum output current of charging pile 2 is controlled. The specific control current can be set according to actual conditions.

[0045] Exemplarily, in this embodiment, the first voltage signal is used to determine that the maximum output current of the charging pile 2 is 8A, and the second voltage signal is used to determine that the maximum output current of the charging pile 2 is 10A.

[0046] Specifically, the shift switch is a single-pole double-throw switch, the first end of the resistor R1 and the first end of the resistor R2 are connected and grounded, the second end of the resistor R1 and the second end of the resistor R2 are respectively connected to the normally closed contact and the normally open contact of the single-pole double-throw switch, and the output contact of the single-pole double-throw switch is connected to the sampling signal interface 13.

[0047] like Figure 3 As shown, it is an exemplary description of the interface between the adapter 1 and the charging pile 2. In this embodiment, two switches and resistors are added inside the adapter 1, and copper pins or other metals with electrical conductors and low impedance are used to connect to the 16A power line, and the maximum output current of the portable AC charging pile 2 is controlled by physically switching the gear. In the figure, interface E is a control signal pin, that is, the sampling signal interface 13 of the adapter 1, and interface D is a control signal socket, that is, a socket that matches the charging pile 2 and the sampling signal interface 13, and the socket is connected to the sampling signal interface 13 of the controller 23. In other words, the sampling signal interface 13 is connected to the matching socket on the charging pile 2, thereby communicating with the signal input end 22 of the controller 23, thereby transmitting the voltage signal to the controller 23. Interface A is the pin 16A of the charging pile 2, interface B is the pin 10A of the adapter 1, and interface C is the socket 16A of the adapter 1.

[0048] It can be understood that the single-pole double-throw switch is a single-pole double-throw relay. Figure 6 , are the front view and left view of the adapter 1 of this embodiment. For example, when the switch K1 is set to 8A, the switch K1 is connected to the resistor R1; when the switch K1 is set to 10A, the switch K1 is connected to the resistor R2. It should be noted that the size of the adapter 1 can be determined according to the specific needs of the customer, and the utility model does not specifically limit the size of the adapter 1.

[0049] In some embodiments, reference Figure 5 The voltage divider circuit 121 may include at least three resistors, each resistor Rn is connected in series with a switch Kn, and the resistors are connected in parallel. When the switch receives a turn-on trigger signal, the resistor connected in series with it forms a path with the sampling signal interface 13. Each resistor determines a voltage signal.

[0050] For example, when the user presses the switch K4, it means that the resistor R4 in the voltage divider circuit 121 is connected to the circuit and forms a path with the sampling signal interface 13, so that the voltage divider circuit 121 outputs a fourth voltage signal, and the controller 23 controls the charging pile 2 to output the corresponding maximum current according to the fourth voltage signal. Alternatively, the controller 23 may pre-store the corresponding relationship between the voltage signal and the maximum output current, and the maximum output current can be quickly determined by searching. Of course, the maximum output current can also be determined in real time based on a specific calculation conversion formula.

[0051] The adapter 1 of this embodiment is provided with a variety of current limiting options through the voltage divider circuit 121, which can limit the output current of the AC charging pile 2 before charging, further improving the user's safety and convenience, and also making the power grid and the charging pile 2 safer. Moreover, the adapter of this embodiment can also limit the power of the charging pile to adapt to the power supply end to achieve charging when the power supply end capacity is insufficient.

[0052] In another preferred embodiment of the present invention, reference Figures 1 to 5 The AC charging pile 2 of this embodiment includes a charging gun for connecting to a device to be charged to supply power to the device, and the AC charging pile 2 of this embodiment also includes a plug 21 and a controller 23. The plug 21 is used to connect to the second connector 11 of the AC charging pile adapter 1 of the above embodiment.

[0053] The signal input terminal 22 of the controller 23 is used to connect to the sampling signal interface 13, and adjust the maximum output current of the charging pile 2 according to the voltage signal output by the maximum current selection circuit 12. Among them, the voltage signal includes at least two types, and the maximum current selection circuit 12 can select one output. Each voltage signal corresponds to a maximum output current.

[0054] In some embodiments, Figure 2 and Figure 5 As shown, the sampling signal interface 13 is a pin, and the AC charging pile 2 is also provided with a jack matching the sampling signal interface 13, which is connected to the signal input terminal 22 of the controller 23 through electrical wiring, and is also connected to the resistor R0 through electrical wiring and connected to the working power supply through the resistor R0.

[0055] It should be noted that the sampling signal interface 13 can also be a jack, and correspondingly, the AC charging pile 2 is provided with pins matching the sampling signal interface 13, that is, the jack and pins here can be interchangeably arranged.

[0056] The adapter 1 of the present application is provided with a variety of current limiting options, which can limit the output current of the AC charging pile 2 before charging, further improving the safety and convenience of use for users, while also making the power grid and the charging pile 2 safer.

[0057] As an option, the adapter 1 of this embodiment, although used in other products, does not have the maximum output current limiting function because the internal circuit of the adapter 1 is not matched with other products (the control signal pins on the adapter 1 will not contact other products). However, the adapter 1 of this embodiment can still be used in the scenario where the 16A current needs to be converted to 10A current.

[0058] The controller of the utility model is used to provide computing and control capabilities to support the operation of the entire charging pile. It should be understood that in the embodiment of the present application, the controller can be a microcontroller unit (MCU), a central processing unit (CPU), and the controller can also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0059] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. An AC charging pile adapter, characterized in that: It includes a housing and a first connector exposed outside the housing and matching with a power supply socket, and the adapter also includes a sampling signal interface, a maximum current selection circuit arranged in the housing, and a second connector matching with a charging pile plug; The maximum current selection circuit is connected to the charging pile through the sampling signal interface, and is used to output a voltage signal to the charging pile, so that the charging pile adjusts its maximum output current accordingly according to the voltage signal.

2. The AC charging pile adapter according to claim 1, characterized in that: The maximum current selection circuit comprises a voltage divider circuit, a first end of the voltage divider circuit is grounded, and a second end of the voltage divider circuit is connected to the sampling signal interface.

3. The AC charging pile adapter according to claim 2, characterized in that: The voltage divider circuit includes at least two resistors and at least one switch. The first end of the resistor is grounded, and the second end of the resistor is connected to the switch to be connected to the sampling signal interface through the switch.

4. The AC charging pile adapter according to claim 3, characterized in that: The voltage divider circuit includes a resistor R1, a resistor R2 and a shift switch, wherein a first end of the resistor R1 and a first end of the resistor R2 are connected to each other and grounded, and a second end of the resistor R1 and a second end of the resistor R2 are connected to the sampling signal interface via the shift switch; When the shift switch is connected to the resistor R1, the voltage divider circuit outputs a first voltage signal; When the shift switch is connected to the resistor R2, the voltage divider circuit outputs a second voltage signal.

5. The AC charging pile adapter according to claim 4, characterized in that: The shift switch is a single-pole double-throw switch, the first end of the resistor R1 and the first end of the resistor R2 are connected and grounded, the second end of the resistor R1 and the second end of the resistor R2 are respectively connected to the normally closed contact and the normally open contact of the single-pole double-throw switch, and the output contact of the single-pole double-throw switch is connected to the sampling signal interface.

6. The AC charging pile adapter according to claim 3, characterized in that: The voltage divider circuit includes at least three resistors and at least three switches. The first end of each resistor is connected to the ground, and the second end of each resistor is connected to a switch to be connected to the sampling signal interface through the switch; each resistor determines a voltage signal.

7. The AC charging pile adapter according to claim 1, characterized in that: The voltage signals include at least two types, and the maximum current selection circuit can select one output; each type of the voltage signal corresponds to determining one type of the maximum output current; or The sampling signal interface is a pin, which is used to connect through a socket matching the charging pile; or, the first connector is a pin; and the second connector is a socket.

8. The AC charging pile adapter according to any one of claims 1 to 7, characterized in that: The maximum current selection circuit is connected to the signal input terminal of the controller of the charging pile through the sampling signal interface, so that the controller adjusts the maximum output current of the charging pile according to the voltage signal.

9. An AC charging pile, comprising a charging gun for connecting to a device to be charged to supply power to the device, characterized in that: The AC charging pile further comprises a plug and a controller; the plug is used to connect the second connector of the AC charging pile adapter according to any one of claims 1 to 8; The signal input end of the controller is used to connect to the sampling signal interface, and adjust the maximum output current of the charging pile according to the voltage signal.

10. The AC charging pile according to claim 9, characterized in that: The sampling signal interface is a pin, and the AC charging pile is also provided with a jack matching the sampling signal interface, and the jack is connected to the signal input end of the controller.

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