Power supply control method and device of hybrid electric vehicle

A hybrid electric vehicle, power supply control technology, applied to hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of large power supply margin, large energy consumption, and increased cost, so as to reduce fuel consumption, solve power shortage, cost reduction effect

Active Publication Date: 2020-01-17
DFSK MOTOR LTD CHONGQING BRANCH CO
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AI Technical Summary

Problems solved by technology

If the low-voltage DC / DC power is selected too high, the power supply will be sufficient and the power supply margin will be large, but at the same time, the energy consumption will be large, the fuel consumption will be high, and the cost will increase; if the low-voltage DC / DC power is selected too small, the battery will supplement the power supply, DC / DC The output power consumption is small, but the battery discharge is large, resulting in serious power loss, and the vehicle cannot be started

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  • Power supply control method and device of hybrid electric vehicle
  • Power supply control method and device of hybrid electric vehicle
  • Power supply control method and device of hybrid electric vehicle

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Embodiment Construction

[0049] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of methods and apparatus consistent with aspects of the present application as recited in the appended claims.

[0050] In order to explain the technical solution of the present application more clearly, the principle of the vehicle power supply system of the plug-in range-extended electric vehicle is first explained in detail.

[0051] Such as figure 1 As shown, when the battery pack is fully charged, the battery pack drives the motor to work to provide the high-voltage power demand of the vehicle,...

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Abstract

The invention relates to a power supply control method and device of a hybrid electric vehicle. The method comprises the steps of obtaining the working state information of a low-voltage load; determining the total consumed power of the low-voltage load according to the working state information; and controlling a direct-current module according to the total consumed power so as to adjust the output power of the direct-current module. According to the scheme, the output power of the direct-current module can be adjusted according to the actually consumed power, so that the dynamic balance of the total input and output electric quantity of a low-voltage electrical system of the whole vehicle is ensured, the output power of the direct-current module is at a reasonable level, the problem caused by too large or too small power is avoided, the oil consumption can be reduced, the cost is reduced, and meanwhile the problem of power shortage is solved.

Description

technical field [0001] The present application relates to the technical field of low-voltage power supply for automobiles, in particular to a power supply control method and device for a hybrid electric vehicle. Background technique [0002] Since the Copenhagen Climate Conference in 2009, almost all automakers around the world have set their sights on electric vehicles, using pure electric vehicles as a carrier to explore effective ways to solve technical problems such as limited mileage, construction of personal charging facilities, and inconvenient maintenance. One solution is to develop plug-in extended-range electric vehicles and use on-board power generation technology to supplement electric energy for vehicles online. From the perspective of the power system structure, the plug-in range-extended electric vehicle belongs to the series plug-in hybrid electric vehicle. From this point of view, before breaking through the bottleneck of battery material technology, plug-i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W20/13
CPCB60W20/00B60W20/13
Inventor 周林牟红兵周沁含李文昊李诗怡李春红
Owner DFSK MOTOR LTD CHONGQING BRANCH CO
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