Control method of integrated charging device, integrated charging device and vehicle

一种充电装置、控制方法的技术，应用在电子领域，能够解决损坏功率器件等问题

Pending Publication Date: 2022-03-01
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the above-mentioned control method, the probability of misjudgment is relatively high. When misjudgment occurs, abnormal current will be generated at the zero-crossing point of the power grid, and the power device will be damaged in severe cases.

Method used

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Embodiment Construction

[0067] The application 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 related application, not to limit the application. It should also be noted that, for the convenience of description, only the parts related to the application are shown in the drawings.

[0068] It should be noted that the terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is just a way of distinguishing object sub-descriptions of the same attribute in the embodiments of the present application. In addition, the embodiments in the present application and the features in the embodim...

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PUM

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Abstract

The invention discloses a control method of an integrated charging device, the integrated charging device and a vehicle. The method comprises the following steps: acquiring a first voltage sampling signal value, a voltage sampling reference signal value and a first voltage amplitude corresponding to the first voltage sampling signal value of a power grid; when the first voltage sampling signal value is larger than or equal to the voltage sampling reference signal value and the first voltage amplitude is smaller than the first voltage threshold value, the power frequency lower tube is controlled to be closed, and the power frequency upper tube is kept closed; acquiring a second voltage sampling signal value of the power grid and a second voltage amplitude corresponding to the second voltage sampling signal value; and when the second voltage sampling signal value is smaller than the voltage sampling reference signal value and the second voltage amplitude value is smaller than the second voltage threshold value, the power frequency lower tube is kept closed, and the power frequency upper tube is controlled to be conducted. According to the method, the generation of zero-crossing abnormal current when the positive direction of the power grid is converted into the negative direction of the power grid is eliminated.

Description

technical field [0001] The present application generally relates to the field of electronic technology, and specifically relates to a control method of an integrated charging device, an integrated charging device and a vehicle. Background technique [0002] With the advancement of technology, the electric vehicle DC (Direct Current, DC power supply) converter and OBC (onboard charger, on-board charger) are integrated in one circuit, and the isolated charging device usually uses the previous stage PFC (PowerFactor Correction, power factor correction ) constant voltage, the isolated charging method of the subsequent LLC (Logical Link Control, Logical Link Control) resonant circuit. [0003] In the prior art, the control method of the isolated charging device is: judge the direction of the power grid by judging the positive or negative of the sampled value, and then control the switching mode of the power frequency tube and the high frequency tube. [0004] However, in the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42H02M3/335B60L53/00
CPCH02M1/4233H02M1/4241H02M3/33569B60L53/00Y02T10/70Y02T10/7072Y02T90/14
Inventor 刘伟冬王超王兴辉
Owner BYD CO LTD
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