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Method and motor vehicle for operating an on-board electrical system of a motor vehicle

A technology for on-board power grids and motor vehicles, applied in electric vehicles, electrical devices, transportation and packaging, etc., can solve problems such as unknown installation, and achieve the effect of safe operation

Active Publication Date: 2021-01-08
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, however, the personnel do not know whether other energy sources are installed in the motor vehicle in addition to the first energy source
A similar disadvantage is the complex vehicle electrical system in the case of accident-related rescues, where the rescuer usually wishes to have no voltage in the vehicle electrical system for his own safety and the safety of others

Method used

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  • Method and motor vehicle for operating an on-board electrical system of a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 A schematic diagram of a motor vehicle 1 is shown, which comprises an on-board electrical system 2 , a bus system 3 and a control device 4 designed to carry out the method according to the invention.

[0018] Onboard electrical system 2 includes a first onboard electrical subsystem 5 and a second onboard electrical subsystem 6 , which are connected to one another via a second energy source in the form of a DC transformer 7 . The first onboard electrical system 5 has an operating voltage of 12 V and comprises a first energy source in the form of a lead-acid battery 8 and a second energy source in the form of a lithium-ion battery 9 connected in parallel thereto. Furthermore, a generator 10 is provided in the first sub-vehicle electrical system 5 for generating current for charging the lead-acid battery 8 and the lithium-ion battery 9 and for supplying electrical consumers / loads 11 .

[0019] The first sub-vehicle electrical system 5 is connected via a DC transf...

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PUM

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Abstract

The invention relates to a method for operating an on-board electrical system (2) of a motor vehicle (1), the on-board electrical system (2) providing an operating voltage for at least one sub-vehicle electrical system (5, 6) of the on-board electrical system (2) Instead, there is a first energy source (8) and at least one second energy source (7, 9), wherein the conductive connection between the first energy source (8) and the on-board electrical system (2) is monitored for intentional interruption, when a In the event of a deliberate interruption of the electrically conductive connection, at least one second energy source (7, 9) of the onboard electrical system (2) is disconnected from the onboard electrical system and / or deactivated.

Description

technical field [0001] The invention relates to a method for operating an onboard electrical system of a motor vehicle, which has a first energy source and at least one second energy source for supplying at least one partial onboard electrical system with an operating voltage. The invention also relates to a motor vehicle. Background technique [0002] Modern motor vehicles sometimes have a significantly more complex on-board electrical system structure than in the past, when the on-board electrical system of the motor vehicle was usually supplied with a single energy source, typically a lead-acid battery arranged in the engine compartment. The vehicle electrical system can, for example, consist of a plurality of sub-vehicle electrical systems operating at different voltage potentials. In this case, the sub-vehicle electrical system can also have a plurality of energy sources of different types. The term energy source here includes all devices that can be used as current a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00B60L3/04B60R16/033
CPCB60L3/00B60L3/0069B60L3/04B60R16/033B60L3/0046
Inventor J·温克勒B·斯托克T·哈克纳
Owner AUDI AG
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