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Battery system monitoring method and device based on OBD-II

A battery system and battery monitoring technology, applied in measurement devices, secondary battery repair/maintenance, measurement of electricity, etc., can solve problems such as hidden safety hazards, lack of safety protection mechanisms, and complexity, and achieve accurate fault diagnosis.

Inactive Publication Date: 2010-07-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increasingly complex system structure and control algorithm, it lacks a security protection mechanism, so there are still certain security risks.

Method used

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  • Battery system monitoring method and device based on OBD-II
  • Battery system monitoring method and device based on OBD-II
  • Battery system monitoring method and device based on OBD-II

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The battery management system includes the following functional modules: data acquisition module (3), OBD-II fault diagnosis module (4), safety management module (5), thermal management module (6), communication module (8), SOC estimation module (7), interactive display module

[0039] (9).

[0040] The software part of the OBD-II fault diagnosis module is composed of a signal acquisition unit (10), a fault identification unit (11), a fault processing unit (12), and a standard communication interface unit.

[0041] The signal collection unit (10) collects all signals related to fault diagnosis of the battery monitoring system to provide basic information for system execution. Said signal includes but not limited to digital quantity, analog quantity and pulse quantity.

[0042] The fault identification unit (11) further includes four sub-units: a conditional filter unit (13), an abnormal confirmation unit (14), an anti-shake processing unit (15) and a fault confirmatio...

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PUM

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Abstract

The invention discloses battery system monitoring method and device based on OBD-II, which relate to the technical field of monitoring of batteries for vehicles. The method is characterized in that a data acquiring module, an OBD-II failure diagnosing module, a safety monitoring module, a heat monitoring module, a communication module, an SOC estimating module and an interactive display module are provided, wherein the OBD-II failure diagnosing module comprises a signal acquiring unit, a failure recognizing unit and a failure processing unit. The device comprises a data acquiring interface, a signal adjusting circuit, a microprocessor, a data memory and a program memory. Tests prove that the battery system monitoring method and device can construct and monitor all parameters of a battery system and carry out failure diagnosis, improves the safety of the system, is convenient for daily maintenance and failure repair and has an important function on the development of the current finished vehicle distributed control network.

Description

technical field [0001] The OBD-II-based battery system monitoring method and device relate to the technical field of vehicle battery monitoring, in particular to battery monitoring systems applied to hybrid vehicles and pure electric vehicles. Background technique [0002] Due to the increasingly prominent issues of energy and environment, electric vehicles including hybrid vehicles have been developed rapidly. As the power source of electric vehicles, power batteries are of vital importance in terms of performance and life. While people are working hard to develop battery technology, battery management technology has become an important means to improve battery performance and life. [0003] The current battery management system mainly includes the following functions: data acquisition, safety management, thermal management, SOC estimation, cell equalization, communication display, etc., which basically realizes the normal use of the battery, optimizes battery performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36H01M10/42
CPCY02E60/12Y02E60/10
Inventor 田光宇高明陈全世黄勇林成涛白鹏傅洪陈红旭
Owner TSINGHUA UNIV
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