Power supply circuit of remote control emission board in charging gun

Abstract

The utility model relates to a power supply circuit for a remote control transmitting plate in a charging gun, which utilizes a bus of a charging cable to supply power to the remote control transmitting plate, thereby being capable of canceling the condition that a power supply cable is independently provided for the remote control transmitting plate from a charging pile, simplifying the structure of the charging cable, and reducing the cable diameter and the manufacturing cost of the charging cable.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transmission and distribution circuits, and in particular relates to a power supply circuit for a remote control transmitting board inside a charging gun. Background Art

[0002] Tesla and other car charging guns have a remote control transmitter board, which is used to control the opening of the car charging port. The power of the remote control transmitter board is provided by the charging pile through two separate wires. With the development of fast charging technology, the power is getting bigger and bigger, and the charging current is increasing sharply, which makes the charging gun wire thicker. Considering the safety requirements, the cable cost remains high. If the use of conductors can be reduced, the cost can be reduced and the cable diameter can be reduced. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to provide a power supply circuit for a remote control transmitting board inside a charging gun, so as to solve the technical problem that a traditional remote control transmitting board needs to be powered separately by a charging pile, resulting in high cable costs.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a remote control transmitting board power supply circuit inside the charging gun, characterized in that it includes a remote control transmitting board, the negative pole of the remote control transmitting board is connected to the neutral line of the charging cable, and the positive pole of the remote control transmitting board is connected to the live wire of the charging cable through a first resistor, a second resistor, a third resistor and a diode connected in series with each other, the positive pole of the diode is connected to the live wire, and the negative pole is connected to the first resistor, and the first resistor, the second resistor and the third resistor are connected in series in sequence.

[0005] As a preferred solution, a fourth resistor, a voltage stabilizing diode, a filter capacitor and an electrolytic capacitor are respectively connected in parallel to the positive and negative electrodes of the remote control transmitting board, the negative electrode of the voltage stabilizing diode is connected to the positive electrode of the remote control transmitting board, and the positive electrode of the electrolytic capacitor is connected to the positive electrode of the remote control transmitting board.

[0006] In order to solve the above technical problems, another technical solution adopted by the utility model is: the remote control transmitting board power supply circuit inside the charging gun includes a remote control transmitting board, the negative pole of the remote control transmitting board is connected to the neutral line of the charging cable, and the positive pole of the remote control transmitting board is connected to the live wire of the charging cable through a high-voltage DC-DC step-down chip.

[0007] As a preferred solution, the model of the DC-DC buck chip is VIPER12A.

[0008] The beneficial effects of the utility model are as follows: the utility model utilizes the busbar of the charging cable to power the remote control transmitting board, thereby eliminating the need to separately provide a power supply cable from the charging pile to the remote control transmitting board, simplifying the structure of the charging cable, and reducing the cable diameter and manufacturing cost of the charging cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0010] Figure 1 It is a specific circuit diagram of the utility model;

[0011] Figure 2 It is another specific circuit diagram of the utility model. DETAILED DESCRIPTION

[0012] The specific implementation scheme of the utility model is described in detail below in conjunction with the accompanying drawings. Example 1

[0013] like Figure 1 The power supply circuit of the remote control transmitting board inside the charging gun shown includes a remote control transmitting board, the negative pole of the remote control transmitting board is connected to the neutral line N- of the charging cable, and the positive pole of the remote control transmitting board is connected to the live line L+ of the charging cable through the first resistor R1, the second resistor R2, the third resistor R2 and a diode D1 connected in series with each other, the positive pole of the diode D1 is connected to the live line L+, and the negative pole is connected to the first resistor R1, and the first resistor R1, the second resistor R2 and the third resistor R3 are connected in series in sequence. The diode D1 ensures that the positive pole of the remote control transmitting board always inputs a positive voltage. The first resistor R1, the second resistor R2 and the third resistor R3 reduce the voltage so that the positive pole voltage of the remote control transmitting board meets its input requirements.

[0014] In order to eliminate the influence of the peak voltage on the input voltage of the remote control transmitting board, the present embodiment further connects a fourth resistor R4, a voltage stabilizing diode D2, a filter capacitor C2 and an electrolytic capacitor C1 in parallel to the positive and negative electrodes of the remote control transmitting board, respectively. The negative electrode of the voltage stabilizing diode D2 is connected to the positive electrode of the remote control transmitting board, and the positive electrode of the electrolytic capacitor C1 is connected to the positive electrode of the remote control transmitting board. When the positive electrode voltage of the remote control transmitting board is too high, the voltage stabilizing diode D2 is broken down, thereby forming a short circuit, thereby preventing the excessive voltage from damaging the remote control transmitting board. Example 2

[0015] like Figure 2 The remote control transmitting board power supply circuit inside the charging gun shown includes a remote control transmitting board, the negative pole of the remote control transmitting board is connected to the neutral line of the charging cable, and the positive pole of the remote control transmitting board is connected to the live line of the charging cable through the high-voltage DC-DC step-down chip U1.

[0016] The model of the DC-DC buck chip U1 is VIPER12A.

[0017] This embodiment uses a high-voltage DC-DC step-down chip U1 to reduce the voltage for use by the remote control transmitter board. Compared with the power supply circuit of the remote control transmitter board inside the charging gun described in Example 1, this embodiment has a higher output power and a stronger remote control signal.

[0018] The utility model utilizes the busbar of the charging cable to power the remote control transmitting board, thereby eliminating the need to separately provide a power supply cable from the charging pile to the remote control transmitting board, simplifying the structure of the charging cable, and reducing the cable diameter and manufacturing cost of the charging cable.

[0019] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. The power supply circuit of the remote control transmitting board inside the charging gun is characterized by: It includes a remote control transmitting board, the negative pole of the remote control transmitting board is connected to the neutral line of the charging cable, the positive pole of the remote control transmitting board is connected to the live line of the charging cable through a first resistor, a second resistor, a third resistor and a diode connected in series, the positive pole of the diode is connected to the live line, and the negative pole is connected to the first resistor, and the first resistor, the second resistor and the third resistor are connected in series in sequence.

2. The power supply circuit of the remote control transmitting board inside the charging gun according to claim 1, characterized in that: A fourth resistor, a voltage stabilizing diode, a filter capacitor and an electrolytic capacitor are respectively connected in parallel to the positive and negative electrodes of the remote control transmitting board. The negative electrode of the voltage stabilizing diode is connected to the positive electrode of the remote control transmitting board, and the positive electrode of the electrolytic capacitor is connected to the positive electrode of the remote control transmitting board.

3. The power supply circuit of the remote control transmitting board inside the charging gun is characterized by: It includes a remote control transmitting board, the negative pole of the remote control transmitting board is connected to the neutral line of the charging cable, and the positive pole of the remote control transmitting board is connected to the live line of the charging cable through a high-voltage DC-DC step-down chip.

4. The power supply circuit of the remote control transmitting board inside the charging gun according to claim 3, characterized in that: The model of the DC-DC buck chip is VIPER12A.

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