Control method, apparatus, device, vehicle and storage medium for dc-dc converter
A technology of DC-DC and control methods, applied in the direction of conversion equipment, vehicle components, transportation and packaging without intermediate conversion to AC, can solve the problem of low energy transmission efficiency, achieve the goal of improving energy transmission efficiency and reducing time Effect
Active Publication Date: 2022-07-01
UNITED AUTOMOTIVE ELECTRONICS SYST
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Problems solved by technology
[0006] The present application provides a control method of a DC-DC converter, which can solve the problem of low energy transmission efficiency of the control method of the DC-DC converter provided in the related art
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[0055] The technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0056] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a ...
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The present application discloses a control method, device, device, vehicle and storage medium for a DC-DC converter. The method includes: constructing an asynchronous boost circuit pair by controlling a high-voltage isolation switch and a low-voltage isolation switch in the DC-DC converter. The high-voltage side capacitor is charged, and when the voltage of the high-voltage side capacitor reaches the first target voltage, the high-voltage isolation switch is closed; in the DC-DC converter, an asynchronous rectification buck circuit is constructed by controlling the high-voltage isolation switch and the low-voltage isolation switch. The high-voltage side capacitor is charged, and when the voltages of the low-voltage side capacitor and the high-voltage side capacitor reach the second target voltage, the low-voltage isolation switch is closed. In this application, an asynchronous boost circuit is constructed to charge the high-voltage side capacitor to the first target voltage, and then an asynchronous buck circuit is constructed to charge the high-voltage side capacitor to the second target voltage, thereby closing the low-voltage isolation switch. It is almost fully charged, so it takes less time to close the low-voltage disconnector, which improves the energy transfer efficiency.
Description
technical field [0001] The present application relates to the technical field of vehicle control, and in particular to a control method, device, device, vehicle and storage medium for a direct current (direct current, DC-DC) converter applied to an electric vehicle. Background technique [0002] New energy vehicles refer to the use of unconventional vehicle fuels as the power source (or the use of conventional vehicle fuels, the use of new vehicle power units), and the integration of advanced technologies in vehicle power control and driving. Vehicles with new technologies and new structures, including hybrid electric vehicles (HEV), battery electric vehicles (BEV), fuel cell electric vehicles (FCEV), etc. [0003] In new energy vehicles, the DC-DC converter is used to connect the power generation system and the on-board electrical system, so that the energy output by the power generation system can be transmitted from the high-voltage side to the low-voltage side in the for...
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IPC IPC(8): H02M3/18B60R16/03
CPCH02M3/18B60R16/03
Inventor 韩炜黄昊陈磊敏黄俊崔永生王友阳
Owner UNITED AUTOMOTIVE ELECTRONICS SYST