Control method for charging voltage set value of hybrid electric vehicle-mounted 12V power supply

A hybrid electric vehicle, voltage setting value technology, applied in hybrid electric vehicles, electric vehicle charging technology, electric vehicles, etc.

Inactive Publication Date: 2019-04-19
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although high-voltage batteries are installed on hybrid electric vehicles, low-voltage batteries are also required to supply power to various low-voltage power consumption units, especially when the high-voltage batteries are not yet online.

Method used

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  • Control method for charging voltage set value of hybrid electric vehicle-mounted 12V power supply
  • Control method for charging voltage set value of hybrid electric vehicle-mounted 12V power supply

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Embodiment Construction

[0017] like figure 1 and 2 As shown, the present invention provides a method for controlling the charging voltage setting value of a vehicle-mounted 12V power supply of a hybrid electric vehicle, which includes: providing: a high-voltage battery 1 that provides a high-voltage power supply to the motor 3 through an inverter 2, and the high-voltage battery 1 is also passed through The transformer 4 supplies power to the low-voltage battery 5 and the vehicle-mounted low-voltage power consumption unit 7; it also provides: a vehicle controller 9, a sensor 6 integrated on the low-voltage battery 5; The sensor 6 is connected to the communication, and according to the detection information of the sensor 6, the voltage setting value of the low-voltage side of the transformer 4 is calculated; when the voltage setting value is greater than the voltage of the low-voltage battery, the vehicle The controller 9 controls the transformer 4 to obtain electric energy from the side of the high-v...

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Abstract

The invention provides a control method for a charging voltage set value of a hybrid electric vehicle-mounted 12V power supply. A whole vehicle controller and a sensor which is integrated on a low-voltage battery are used in the method. The method comprises the steps of connecting the whole vehicle controller with the sensor by CAN communication, and calculating the voltage set value of a low voltage side of a transformer according to detecting information of the sensor; when the voltage set value is greater than the voltage of the low-voltage battery, controlling the transformer to acquire electric energy from a high-voltage battery side and charge the low-voltage battery by the whole vehicle controller through CAN communication; when the voltage set value is smaller than the voltage of the low-voltage battery, directly supplying power for a vehicle-mounted low-voltage power consumption unit by the low-pressure battery, acquiring the voltage set value and judging according to the voltage set value; and acquiring electric energy from the low-voltage battery or charging the low-voltage battery.

Description

technical field [0001] The invention relates to the technical field of hybrid vehicle engineering, in particular to a control method for a voltage setting value of a voltage converter between a high-voltage battery and a low-voltage battery. Background technique [0002] With the continuous improvement of environmental awareness and the continuous strengthening of national regulations, new energy technologies are actively applied to automotive technology. Pure electric vehicles can achieve zero fuel consumption and zero emissions, but they have always been limited by battery technology, so that the driving range of pure electric vehicles cannot be compared with traditional vehicles. Therefore, in order to alleviate customers' concerns about driving range, hybrid vehicles that combine internal combustion engines and electric motors have emerged as the times require. Although a high-voltage battery will be installed on a hybrid vehicle, a low-voltage battery is also required ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W10/26B60L1/00
CPCB60L1/00B60W10/26B60W20/00Y02T90/16
Inventor 毛小宇张彦辉庞艳红
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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