CN101672897B - Voltage monitoring and diagnosing device and method of fuel cell stack - Google Patents
Voltage monitoring and diagnosing device and method of fuel cell stack Download PDFInfo
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- CN101672897B CN101672897B CN2009100131810A CN200910013181A CN101672897B CN 101672897 B CN101672897 B CN 101672897B CN 2009100131810 A CN2009100131810 A CN 2009100131810A CN 200910013181 A CN200910013181 A CN 200910013181A CN 101672897 B CN101672897 B CN 101672897B
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Abstract
The invention relates to a voltage monitoring device of a fuel cell stack, comprising a connector assembly, a measuring wiring harness and a voltage measuring unit of the fuel cell stack, wherein the connector assembly is used for a 121-stitching machine; one end of the measuring wiring harness is respectively connected with an even number of polar plates or a three multiple number of polar plates, and the other end is connected with the voltage measuring unit of the fuel cell stack through the connector assembly used for the 121-stitching machine; and the voltage measuring unit of the fuel cell stack detects the voltage information of each measuring point, which is transmitted by the connector assembly used for the 121-stitching machine, and compares the average voltage of the fuel cell stack with the voltage information of the measuring point to determine whether the voltage of a cell positioned at the measuring point is normal. The voltage monitoring device realizes the voltage monitoring and diagnosing of a fuel cell used for a vehicle and has the advantages of low realization cost, simple structure, safety, reliability, and the like.
Description
Technical field
The invention belongs to fuel cell field, particularly the voltage monitor of on-vehicle fuel.
Background technology
Fuel cell car is normally monitored every batteries voltage of fuel cell pack the monitoring of fuel cell stack operation state at present.
To the monitoring of the fuel cell stack operation state of fuel cell car, there is following shortcoming in the prior art:
1) general fuel cell pack has joint cells up to a hundred to be composed in series, the method for a joint one inspection, and the voltage measurement line is very many, not only increases material and production cost, and too much slotted line can reduce the reliability of total system;
2) monitor at present fuel cell stack voltage patrol and examine with the fuel cell stack voltage measuring unit between usually adopt hyperchannel D type interconnecting devices to link to each other with winding displacement, the connector of this scheme is difficult to satisfy antidetonation and water proof and dust proof requirement.
Summary of the invention
To the objective of the invention is the shortcoming that exists in the prior art in order overcoming, a kind of fuel cell stack voltage monitoring device of fuel cell car to be provided, satisfy requirement the monitoring of vehicle fuel battery heap.Technical scheme of the present invention is: a kind of fuel cell stack voltage monitoring diagnosis device, comprise 121 sewing machine connectors, measure wire harness and fuel cell stack voltage measuring unit, an end that it is characterized in that described measurement wire harness is connected with the even number pole plate of fuel cell pack or 3 multiple pole plate respectively, constitute each measurement point of fuel cell pack, measuring the wire harness other end is connected with the fuel cell stack voltage measuring unit with connector by described 121 sewing machines, the fuel cell stack voltage measuring unit detects the information of voltage of 121 sewing machines with each next measurement point of connector transmission, and the information of voltage of comparison fuel cell pack average voltage and each measurement point, determine whether the voltage of measurement point battery is normal.
The monitoring, diagnosing method of a kind of fuel cell stack voltage monitoring device of the present invention, comprise of the detection of fuel cell stack voltage measuring unit to the information of voltage of each measurement point of fuel cell pack, the fuel cell stack voltage measuring unit compares judgement and abnormal alarm according to putting program to each measurement point voltage to the detection and the fuel cell stack voltage measuring unit of fuel cell pack total voltage, it is characterized in that described fuel cell stack voltage measuring unit to the initialize program that each measurement point voltage compares judgement is: according to detection joint number and the alarm voltage set, program is earlier that one inspection of two joints or one inspection of three joints are judged, moves two joint one inspection programs and three joints, one inspection program then respectively;
Two joints, one inspection program detects the voltage and the fuel cell pack total voltage of i batteries earlier, judge that then current measurement point is a batteries or two batteries, if judge it is a batteries, then institute being surveyed voltage directly compares with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning,, then return still three joints, one inspection determining program of two joints, one inspection if be not less than the setting alarm voltage; If judge it is two batteries, then 1/2 of surveys voltage is compared with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning, if be not less than the setting alarm voltage, then return two joints, one inspection or three and save one and examine determining program;
Three joints, one inspection program detects the voltage and the fuel cell pack total voltage of i batteries earlier, judge that then current measurement point is a batteries or two batteries or three batteries, if judge it is a batteries, then institute being surveyed voltage directly compares with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning,, then return still three joints, one inspection determining program of two joints, one inspection if be not less than the setting alarm voltage; If judge it is two batteries, then 1/2 of surveys voltage is compared with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning, if be not less than the setting alarm voltage, then return two joints, one inspection or three and save one and examine determining program; If judge it is three batteries, then 1/3 of surveys voltage is compared with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning, if be not less than the setting alarm voltage, then return two joints, one inspection or three and save one and examine determining program.
The present invention utilizes 121 sewing machines to adopt respectively to vehicle fuel battery heap two joints or three methods that economize on electricity is pressed and total voltage is monitored with connector, it is the multiple pole plate welding of the corresponding even number pole plate of wire harness one end and fuel cell pack or 3, the other end links to each other with the automobile-used 121 core connectors of fuel cell stack voltage measuring unit, fuel cell stack voltage measuring unit circulatory monitoring is also analyzed each two joint of fuel cell pack ((voltage range 0～3.6V) voltage and cell stack total voltage information is determined the running status of fuel cell pack for scope 0～2.4V) or three joints.
The present invention has following advantage:
1) adopts the automobile-used connector of 121 cores, satisfied that vehicle fuel battery heap more piece is measured and the harsh requirement of reliability;
2) adopt the measurement scheme of two joints or three joints to significantly reduce fuel cell pack, lowered the material cost and the processing charges of system, can improve the reliability of system simultaneously measuring the requirement of wire harness quantity;
3) adopt the measurement scheme of two joints or three joints, can reduce the measure dot number of fuel cell stack voltage measuring unit greatly, can significantly reduce the hardware complexity of voltage measurement unit, further improve the reliability of system and reduce the material and the processing cost of system;
4) method that adopts measuring voltage and average voltage to compare reaches a certain setting value if measuring voltage is lower than average voltage, thinks that then the fuel battery voltage of corresponding joint number of measurement is unusual, sends warning.Method is safe and reliable.
Description of drawings
The present invention has accompanying drawing 3 width of cloth, wherein,
Fig. 1 is the measuring principle figure of vehicle fuel battery heap two joints one inspection,
Fig. 2 is the measuring principle figure of vehicle fuel battery heap three joints one inspection.
Fig. 3 is a fuel cell stack voltage measuring unit initialize program FB(flow block).
In the accompanying drawing:
101: fuel cell pack
201: measure wire harness
The automobile-used connector of 301:121 core
401: the fuel cell stack voltage measuring unit
501: voltage sensor
Embodiment
The invention will be further described below in conjunction with embodiment that accompanying drawing provides.
Claims (2)
1. fuel cell stack voltage monitoring diagnosis device, comprise 121 sewing machine connectors, measure wire harness and fuel cell stack voltage measuring unit, the fuel cell stack voltage measuring unit is measured the information of voltage of fuel cell pack average voltage and each measurement point, an end that it is characterized in that described measurement wire harness is connected with the even number pole plate of fuel cell pack or 3 multiple pole plate respectively, constitute each measurement point of fuel cell pack, measuring the wire harness other end is connected with the fuel cell stack voltage measuring unit with connector by described 121 sewing machines, the fuel cell stack voltage measuring unit receives and handles through the information of voltage of 121 sewing machines with each next measurement point of connector transmission, determines whether the voltage of measurement point battery is normal.
2. the monitoring, diagnosing method of the described a kind of fuel cell stack voltage monitoring device of claim 1, comprise of the detection of fuel cell stack voltage measuring unit to the information of voltage of each measurement point of fuel cell pack, the fuel cell stack voltage measuring unit compares judgement and abnormal alarm according to initialize program to each measurement point voltage to the detection and the fuel cell stack voltage measuring unit of fuel cell pack total voltage, it is characterized in that described fuel cell stack voltage measuring unit to the initialize program that each measurement point voltage compares judgement is: according to detection joint number and the alarm voltage set, program is earlier that one inspection of two joints or one inspection of three joints are judged, moves two joint one inspection programs and three joints, one inspection program then respectively;
Two joints, one inspection program detects the voltage and the fuel cell pack total voltage of i batteries, i is current measurement point, judge that then current measurement point is a batteries or two batteries, if judge it is a batteries, then institute is surveyed voltage and directly compare,, then send warning if be lower than the setting alarm voltage with fuel cell pack single battery average voltage, if be not less than the setting alarm voltage, then return still three joints, one inspection determining program of two joints, one inspection; If judge it is two batteries, then 1/2 of surveys voltage is compared with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning, if be not less than the setting alarm voltage, then return two joints, one inspection or three and save one and examine determining program;
Three joints, one inspection program detects the voltage and the fuel cell pack total voltage of i batteries, i is current measurement point, judge that then current measurement point is a batteries or two batteries or three batteries, if judge it is a batteries, then institute is surveyed voltage and directly compare,, then send warning if be lower than the setting alarm voltage with fuel cell pack single battery average voltage, if be not less than the setting alarm voltage, then return still three joints, one inspection determining program of two joints, one inspection; If judge it is two batteries, then 1/2 of surveys voltage is compared with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning, if be not less than the setting alarm voltage, then return two joints, one inspection or three and save one and examine determining program; If judge it is three batteries, then 1/3 of surveys voltage is compared with fuel cell pack single battery average voltage, if be lower than the setting alarm voltage, then send warning, if be not less than the setting alarm voltage, then return two joints, one inspection or three and save one and examine determining program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100131810A CN101672897B (en) | 2009-08-14 | 2009-08-14 | Voltage monitoring and diagnosing device and method of fuel cell stack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100131810A CN101672897B (en) | 2009-08-14 | 2009-08-14 | Voltage monitoring and diagnosing device and method of fuel cell stack |
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| Publication Number | Publication Date |
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| CN101672897A CN101672897A (en) | 2010-03-17 |
| CN101672897B true CN101672897B (en) | 2011-10-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9017889B2 (en) * | 2011-06-28 | 2015-04-28 | GM Global Technology Operations LLC | Frame sequence for a cell voltage measurement system with a low probability of natural occurrence |
| CN107478946B (en) * | 2016-08-29 | 2020-09-18 | 宝沃汽车（中国）有限公司 | Diagnosis method and system for single voltage acquisition wiring harness of power battery and vehicle |
| CN109638320B (en) * | 2017-10-09 | 2021-09-24 | 上海汽车集团股份有限公司 | Single-cell failure control method and controller for vehicle fuel cell |
| CN109459706B (en) * | 2018-09-26 | 2021-08-13 | 漳州科华技术有限责任公司 | Battery detection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564011A (en) * | 2004-03-17 | 2005-01-12 | 清华大学 | Single chip voltage monitor for vehicle fuel cell stack |
| CN1746695A (en) * | 2005-10-21 | 2006-03-15 | 清华大学 | Fuel cell monolithic voltage monitor of vehicle |
| CN101191822A (en) * | 2006-12-02 | 2008-06-04 | 比亚迪股份有限公司 | Fuel cell voltage monitoring system and its method |
| CN201508407U (en) * | 2009-08-14 | 2010-06-16 | 新源动力股份有限公司 | Fuel cell stack voltage monitoring and diagnosing device |
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2009
- 2009-08-14 CN CN2009100131810A patent/CN101672897B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564011A (en) * | 2004-03-17 | 2005-01-12 | 清华大学 | Single chip voltage monitor for vehicle fuel cell stack |
| CN1746695A (en) * | 2005-10-21 | 2006-03-15 | 清华大学 | Fuel cell monolithic voltage monitor of vehicle |
| CN101191822A (en) * | 2006-12-02 | 2008-06-04 | 比亚迪股份有限公司 | Fuel cell voltage monitoring system and its method |
| CN201508407U (en) * | 2009-08-14 | 2010-06-16 | 新源动力股份有限公司 | Fuel cell stack voltage monitoring and diagnosing device |
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| CN101672897A (en) | 2010-03-17 |
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