A control method, device, and equipment for a low-voltage power supply of an electric vehicle, and the vehicle

A low-voltage power supply, electric vehicle technology, applied in electric vehicles, current collectors, power management, etc., can solve problems such as low-voltage power supply instability, and achieve the effect of ensuring stability

Active Publication Date: 2020-09-18
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a control method, device, equipment, and vehicle for a low-voltage power supply of an electric vehicle, which solves the problem of unstable low-voltage power supply due to the increase in vehicle-mounted electrical equipment

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  • A control method, device, and equipment for a low-voltage power supply of an electric vehicle, and the vehicle
  • A control method, device, and equipment for a low-voltage power supply of an electric vehicle, and the vehicle
  • A control method, device, and equipment for a low-voltage power supply of an electric vehicle, and the vehicle

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Embodiment Construction

[0050]Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0051] Such as figure 1 As shown, an embodiment of the present invention provides a control method for a low-voltage power supply of an electric vehicle, including:

[0052] Step 11, obtaining the current remaining power of the low-voltage battery and the current working state of the DC conversion unit DC-DC connected to the low-voltage battery;

[0053] Step 12. According to the current remaining power of the low-voltage battery and the curren...

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Abstract

The invention discloses a control method and device of a low-voltage power supply of an electric vehicle, equipment and a vehicle. The method comprises the steps that the current remaining electricityamount of a low-voltage storage battery and the current working state of a direct current conversion unit DC-DC connected with the low-voltage storage battery are obtained; using state control is conducted on a low-voltage electrical appliance connected with the low-voltage storage battery and the DC-DC according to the current remaining electricity amount of the low-voltage storage battery and the current working state of the DC-DC. According to the method, the loading situation of an electrical system is monitored by detecting the remaining electricity amount of the low-voltage storage battery and the working state of the direct current conversion unit, low-voltage electric energy is reasonably distributed according to the actual demands of the whole vehicle, and hierarchical switchingcontrol is conducted on functions of electrical appliance components to ensure the stability of low-voltage power supplying.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a control method, device, equipment and vehicle for a low-voltage power supply of an electric vehicle. Background technique [0002] With the increase in the configuration functions of electric vehicles' electronic appliances, the increase in vehicle electrical equipment and power consumption has increased, and it has become more difficult to achieve a dynamic balance of vehicle power. Since the low-voltage charging system of electric vehicles passively adjusts the charging power according to the low-voltage load requirements of the vehicle, it is impossible to know the precise information of the battery, only to detect the battery voltage, and cannot realize precise intelligent control of battery charging. When the battery charging unit fails or the state of the battery is not good, excessive low-voltage power supply demand may accelerate the feeding of the low-voltage battery, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L1/00
CPCB60L1/00Y02T10/72
Inventor 王金龙易迪华张兆龙
Owner BEIJING ELECTRIC VEHICLE
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