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Power supply control method and device for 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 cost increase, large energy consumption, large power supply margin, etc., to reduce costs, solve power loss, The effect of reducing fuel consumption

Active Publication Date: 2022-01-18
DFSK MOTOR LTD CHONGQING BRANCH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Power supply control method and device for hybrid electric vehicle
  • Power supply control method and device for hybrid electric vehicle
  • Power supply control method and device for 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 present application relates to a power supply control method and device for a hybrid electric vehicle. The method includes: obtaining the working state information of the low-voltage load; determining the total power consumption of the low-voltage load according to the working state information; The module is controlled to adjust the output power of the DC module. The solution of this application can adjust the output power of the DC module according to the actual power consumption, thereby ensuring the dynamic balance of the total input and output power of the overall low-voltage electrical system of the car; keeping the output power of the DC module at a reasonable level and avoiding excessive power Or the problems caused by the small size can reduce fuel consumption, reduce costs, and solve the problem of power loss at the same time.

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 Patents(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