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Method for monitoring a power supply in a motor vehicle

An energy supply and motor vehicle technology, applied in electric vehicles, vehicle energy storage, testing electrical devices in transportation, etc., can solve the problem that direct solutions cannot be applied, and achieve the effect of improving statistical security and reducing the probability of failure

Pending Publication Date: 2021-02-26
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the described straightforward scheme for determining the individual line resistances cannot be applied

Method used

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  • Method for monitoring a power supply in a motor vehicle
  • Method for monitoring a power supply in a motor vehicle
  • Method for monitoring a power supply in a motor vehicle

Examples

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Embodiment Construction

[0021] The invention is shown schematically in the drawing on the basis of an embodiment and will be described in detail later with reference to the drawing.

[0022] By way of example, a battery pack or accumulator is described in this exemplary embodiment as a possible energy store. Alternatively, however, other energy accumulators suitable for the task setting, for example based on inductance or capacitance, fuel cells, capacitors, etc., can equally be used.

[0023] figure 1 A possible topology of an energy supply system consisting of a basic onboard electrical system 22 is shown, which supplies at least one basic electrical consumer 24 , which is shown as an example. Alternatively, an energy store or a battery pack with associated (battery pack) sensors and / or a starter, and / or a plurality of non-safety-relevant convenience consumers may also be provided in the basic vehicle electrical system 22 , which Convenience consumers can be protected or controlled by electrical ...

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PUM

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Abstract

The invention relates to a method for monitoring a power supply in a motor vehicle, wherein in a vehicle electrical sub-system (30, 40) at least one stored energy source (32) supplies a plurality of preferably safety-relevant consumers (36, 46) with power, wherein at least one measurement variable (Ubatt, Ibatt; Uv, Iv) of a stored energy source (32) and / or of at least one consumer (36, 46) is detected, wherein at least one wiring harness model (91) is provided, which represents the vehicle electrical sub-system (30, 40), and a parameter estimator (104) is provided, which estimates at least one characteristic variable (Rb12) of the wiring harness model (91) using the measurement variable (Ubatt, Ibatt; Uv, Iv).

Description

technical field [0001] The invention relates to a method for monitoring an energy supply in a motor vehicle, in particular a motor vehicle with automatic driving operation, according to the preambles of the independent claims. Background technique [0002] The vehicle electrical system has the task of supplying energy to electrical consumers. If the energy supply fails due to faults or aging in the onboard electrical system or onboard electrical system components in today's vehicles, important functions such as servo steering are lost. Since the steering capability of the vehicle is not impaired, but only sluggish, failure of the on-board electrical system is usually accepted in today's series-produced vehicles, since the driver is at his disposal as a backup force. In order to improve availability, a dual-channel on-board power grid structure is proposed, for example in WO 2015 / 135729 A1. The two-channel on-board electrical network structure is required to power systems f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/007Y02T10/70Y02T10/72G05D1/0061B60R16/033G07C5/0808G07C5/0816B60L2260/54Y02T10/84G05D1/81
Inventor Q-M·黎J·莫茨P·吕克尔F·贾莫洛维兹
Owner ROBERT BOSCH GMBH