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Method and device for determining fault of vehicle low-voltage electrical system

A low-voltage electrical and low-voltage battery technology is applied to computer storage media to determine the fault field of the vehicle's low-voltage electrical system, which can solve problems such as affecting battery life, inability to be perceived by users, and frequent charging of battery detection module detection errors.

Active Publication Date: 2019-06-28
NIO ANHUI HLDG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the deep discharge of the low-voltage battery will affect the battery life, thereby affecting the car experience and vehicle quality
[0003] Since the charging and discharging of the low-voltage battery is completed by the on-board module, the user cannot perceive
In addition, if the battery detection module detects a failure or the low-voltage battery is aging, it will frequently wake up the on-board DC-DC module to charge the battery, which will affect the mileage of the vehicle and even cause the vehicle to break down
Furthermore, the detection error of the battery detection module is too large will also cause frequent charging

Method used

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Embodiment Construction

[0032] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to only the embodiments set forth herein. The above-mentioned embodiments are given to make the disclosure of this document comprehensive and complete, so as to more fully convey the protection scope of the present invention to those skilled in the art.

[0033] In this specification, terms such as "comprising" and "comprising" mean that in addition to the units and steps that are directly and explicitly stated in the specification and claims, the technical solution of the present invention does not exclude Or the situation of other units and steps clearly stated.

[0034] Words such as "first" and "second" do not denote the order of elements in terms of time, space, size, etc. but are merely used to disting...

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Abstract

The invention relates to a method and device for determining a fault of a vehicle low-voltage electrical system and a computer storage medium enforcing the method, and belongs to vehicle electric energy management technologies. The vehicle low-voltage electrical system comprises a low-voltage battery, a battery detection module and a low-voltage electric energy management module, the battery detection module is configured to detect state information of the low-voltage battery, and the low-voltage electric energy management module is configured to control charging for the low-voltage battery bya vehicle-mounted DC-DC module on the basis of the state information or the power supply voltage of the low-voltage battery. The method comprises the following steps that historical data, including the frequency of charging operation and an event for triggering the charging operation, of charging operation for the low-voltage battery by the vehicle-mounted DC-DC module in a period is obtained, and whether the fault occurs as well as the fault type of the vehicle low-voltage electrical system are determined on the basis of the historical data.

Description

technical field [0001] The invention relates to automobile electric energy management technology, in particular to a method and device for determining a fault in a vehicle low-voltage electrical system and a computer storage medium for implementing the method. Background technique [0002] Low-voltage electrical appliances in electric vehicles are usually powered by on-board DC-DC modules. However, in some cases (for example, the vehicle is in sleep mode or locked), the on-board DC-DC module stops working. At this time, a low-voltage battery such as a 12V battery can be used to power the low-voltage electrical appliances in a working or standby state. Low-voltage electrical appliances in electric vehicles are usually powered by low-voltage batteries such as 12V batteries or on-board DC-DC modules. With the trend of electrification, intelligence and interconnection, the static power consumption of electric vehicles has increased significantly. Due to the large static power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/382
CPCY02T10/70
Inventor 付力涛梁超
Owner NIO ANHUI HLDG CO LTD
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