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A dual output port charging circuit and its control method

A charging circuit and control method technology, which is applied to battery circuit devices, charging stations, control devices, etc., can solve the problems of complicated setting and inconvenient regulation, and achieve the effects of convenient setting, simple structure and low cost.

Active Publication Date: 2019-05-17
SHENZHEN VMAX NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the voltage / current of these two ports is regulated separately, which has the defects of complex setting and inconvenient regulation

Method used

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  • A dual output port charging circuit and its control method
  • A dual output port charging circuit and its control method
  • A dual output port charging circuit and its control method

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The invention discloses a dual output port charging circuit, see figure 1 The hardware circuit diagram shown includes a primary conversion circuit, a first conversion circuit on a secondary side, a second conversion circuit on a secondary side, and a transformer T1 connecting these three circuits. The charging circuit can be used as a car charger, the primary side conversion circuit is connected to the front-stage PFC conversion circuit, the secondary side first conversion circuit charges the vehicle battery, and the secondary side second conversion circuit supplies power to other electri...

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Abstract

The invention discloses a charging circuit with dual output ports, which comprises a primary side conversion circuit, a secondary side first conversion circuit, a secondary side second conversion circuit, and a transformer connecting these three circuits; the output of the secondary side second conversion circuit is sampled The voltage and output current are compared and compensated with the reference value to finally control the on-off time of the switch in the primary side conversion circuit; the output current of the primary side conversion circuit is sampled, and the zero-crossing delay is calculated through zero detection, and then the secondary side is controlled. Second, the on-off time of the rectifier switch in the conversion circuit; the invention also discloses the control method of the charging circuit; compared with the prior art, the invention can flexibly control two direct currents by using a DSP (digital signal processor). The voltage of the output port is precisely adjusted and has strong anti-interference ability; at the same time, it has the advantages of simple structure, convenient setting, small size, low cost and light weight.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to an on-board charger circuit with dual output ports and a control method thereof. Background technique [0002] With the demand for energy saving and emission reduction, as well as the control of air pollution, new energy vehicles are gradually being promoted and used in the market, among which electric vehicles are the main force of new energy vehicles. The on-board charger of an electric vehicle is an important part of the electric vehicle. The on-board charger generally has two output ports, one is for charging the battery, and the other is for supplying power to the electrical equipment in the car. In the prior art, the voltage / current of the two ports are separately regulated, which has the disadvantages of complicated setting and inconvenient regulation. Therefore, the industry urgently needs to develop a charging circuit and its control method that can co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L53/20B60R16/03B60R16/033H02J7/00H02M3/335
CPCB60R16/03B60R16/033B60L53/60H02J7/00H02M3/33592H02J2207/20H02M3/156H02M3/33515H02M3/33561H02M3/33576H02M1/0058H02M1/007Y02B70/10Y02T10/70Y02T10/7072Y02T10/92Y02T90/12Y02T90/14B60L2240/52B60Y2200/91B60L53/24H02M3/335
Inventor 刘钧冯颖盈徐金柱敖华
Owner SHENZHEN VMAX NEW ENERGY CO LTD
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