Far-end voltage sampling compensation charging pile

A voltage sampling and charging pile technology, which is applied in electric vehicle charging technology, charging stations, electric vehicles, etc., can solve problems such as inaccurate voltage sampling, low real voltage, and paying for losses, and achieve the effect of improving accuracy and overcoming voltage drop

CN114043893APending Publication Date: 2022-02-15FUJIAN NEBULA ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-02-15

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Abstract

The invention provides a far-end voltage sampling compensation charging pile in the technical field of charging piles. The far-end voltage sampling compensation charging pile comprises a charging cabinet and at least one charging gun, the charging cabinet comprises a power supply module, a charger controller, a voltage and current sampling module, a resistor R1, a switch K3 and a switch K4; one end of the power supply module is connected with the switch K3 and the switch K4, and the other end of the power supply module is connected with the voltage and current sampling module; the charging gun is connected with the charger controller, the voltage and current sampling module, the switch K3 and the switch K4; the resistor R1 is connected with the charger controller and the charging gun; and the charger controller is connected with the voltage and current sampling module, the switch K3 and the switch K4. The far-end voltage sampling compensation charging pile has the advantages that the voltage sampling precision is greatly improved, and the output voltage of the charging gun is compensated.
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Description

technical field

[0001] The invention relates to the technical field of charging piles, in particular to a remote voltage sampling compensation charging pile. Background technique

[0002] The DC charging pile is a special DC device used to directly connect the electric vehicle to the AC / DC grid (power supply) side, supply the DC power to the battery pack of the electric vehicle, and carry out energy for the electric vehicle under the management of the on-board BMS system. It is equipped with a control guide device to ensure the reliable connection between the DC charging column and the electric vehicle and the charging safety. At the same time, it integrates functional modules such as the human-computer interaction system, the charging management system, and the local and remote communication interfaces, so as to facilitate the charging of the DC charging pile. use and management.

[0003] The DC charging pile is generally composed of a charging cabinet, a charging cable, a...

Examples

Embodiment Construction

[0033] The general idea of ​​the technical solution in the embodiment of the application is as follows: by transferring the voltage sampling point from the positive and negative poles of the DCDC module to the terminal DC+ and terminal DC- of the charging gun to improve the voltage sampling accuracy; by setting the switch K1 and the switch K2 , switch Ka and switch Kb, when the switch K1 and the switch K2 are closed, the switch Ka and the switch Kb are also closed, because Ra>Rb, Rd>Rc, so that the voltage sampling of the DCDC module comes from the resistance Rb and the resistance Rc respectively, that is, the charging The terminal DC+ and terminal DC- of the gun, and then use the sampled voltage signal as feedback to adjust the output voltage, so as to realize the compensation of the output voltage of the charging gun.

[0034] Please refer to Figure 1 to Figure 7 As shown, a preferred embodiment of a remote voltage sampling and compensation charging pile in the present inve...