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Method for recognising a critical battery condition after a reset of a battery monitoring device

A battery status, battery monitoring technology, applied in battery circuit devices, circuit devices, secondary batteries, etc., can solve problems such as distortion

Active Publication Date: 2013-04-24
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the determination can be severely distorted by various polarization effects, for example when the battery is strongly discharged before resetting or in the case of using an external starting device

Method used

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  • Method for recognising a critical battery condition after a reset of a battery monitoring device
  • Method for recognising a critical battery condition after a reset of a battery monitoring device

Examples

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Embodiment Construction

[0021] FIG. 1 schematically shows a preferred embodiment 100 of a battery monitoring device according to the invention within an energy supply system 10 of a motor vehicle. The battery monitoring device 100 is connected between the negative pole of the starter battery 11 and the battery cable 12 of the motor vehicle.

[0022] The battery monitoring device 100 includes a measuring section 110 that measures a series of parameters of the battery 11 . Furthermore, battery monitoring device 100 also includes a computing unit 120 for evaluating the measured variables and for determining the state of the battery. The calculation unit 120 has a nonvolatile memory 121 for recording data representing critical battery states and the like. Battery monitoring device 100 is connected to other components of the vehicle, in particular to a control unit, via a connection 13 , in particular a bus connection.

[0023] A preferred embodiment of the invention is shown in the form of a state mach...

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Abstract

The invention relates to a method for recognising a critical battery condition after a reset (200) of a battery monitoring device (100), wherein a data item indicating the critical battery condition is stored (221) in a non-volatile memory (121) when a critical battery condition is recognised (220) by the battery monitoring device (100), and after the reset (200) of the battery monitoring device (100) a critical battery condition is recognised (211, 220) if the data item indicating the critical battery condition is stored in the non-volatile memory (121).

Description

technical field [0001] The invention relates to a method for detecting a critical battery state after a reset of a battery monitoring device. Background technique [0002] In modern motor vehicles, devices or systems for monitoring the starter battery are increasingly used. An exemplary method for monitoring a starter battery is known from DE 101 06 508 A1. [0003] The present inventors provide a battery monitoring device under the name "Electronic Battery Sensor (EBS)". The electronic battery sensor is equipped with integrated evaluation electronics and detects various battery variables such as voltage, current and temperature, from which a number of variables describing the state of the starter battery are determined by means of software algorithms. [0004] The energy management systems (EEM) of modern vehicles use this information in a targeted manner in order, for example, to maintain the charge of the battery at least to such an extent that the vehicle can also be s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCY02E60/12H01M10/425G01R31/3606H01M10/4257G01R31/3693G01R31/3647G01R31/382Y02E60/10H01M10/48G01R31/367G01R19/16542B60R16/033
Inventor J.基茨勒J.莫茨
Owner ROBERT BOSCH GMBH
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