CN106371018B - Power cell of vehicle method for diagnosing faults and equipment based on battery terminal voltage estimation - Google Patents
Power cell of vehicle method for diagnosing faults and equipment based on battery terminal voltage estimation Download PDFInfo
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- CN106371018B CN106371018B CN201510429152.8A CN201510429152A CN106371018B CN 106371018 B CN106371018 B CN 106371018B CN 201510429152 A CN201510429152 A CN 201510429152A CN 106371018 B CN106371018 B CN 106371018B
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Abstract
The invention proposes a kind of power cell of vehicle method for diagnosing faults and equipment, the described method includes: acquiring signal associated with the current operating parameters of target power battery by sensor, and the estimated value of the current operating parameters of the target power battery is calculated based on the signal therewith；The current working status of the target power battery is assessed based on the actual value of the current operating parameters of the estimated value and other sensor the target power battery collected；Fault handling operation is triggered when the current working status for determining the target power battery is abnormal.Power cell of vehicle method for diagnosing faults disclosed in this invention and equipment are capable of the current working status of accurate evaluation power battery and cost is relatively low.
Description
Technical field
The present invention relates to power cell of vehicle method for diagnosing faults and equipment, more particularly, to based on battery terminal voltage
The power cell of vehicle method for diagnosing faults and equipment of estimation.
Background technique
Currently, becoming increasingly popular with electric car and hybrid vehicle, (as the power battery in vehicle
Vehicle provides the power source of active force or auxiliary power) real-time fault diagnosis become more and more important.For example, in vehicle
The normal work of power battery needs current operating parameters (such as the electricity that works by battery management system based on power battery
Pressure, operating current or operating temperature) accurate estimated driving force battery current state, and the current operating parameters of power battery rely on
The data transmitted from corresponding sensor, therefore, the degree of reliability of sensor signal directly affects power battery state
Accurate estimation.
In existing technical solution, in order to ensure the reliability of sensor signal, multisensor redundancy cloth is generallyd use
The mode set, for example, using the same group of signal of sensor measurement of two or more, to measure mutually testing for result
Card.
However, there are the following problems for above-mentioned existing technical solution: due to needing for same group of signal using two or
The more sensors of person, therefore higher cost.
Accordingly, there exist following demands: providing the current working status for capableing of accurate evaluation power battery and cost is relatively low
Power cell of vehicle method for diagnosing faults and equipment.
Summary of the invention
In order to solve the problems existing in the prior art scheme, the invention proposes being capable of accurate evaluation power battery
Current working status and lower-cost power cell of vehicle method for diagnosing faults and equipment.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of power cell of vehicle failure diagnosis apparatus, the power cell of vehicle failure diagnosis apparatus include:
Parameter estimator, the parameter estimator receiving sensor work at present collected with target power battery are joined
The associated signals of number, and calculate based on the signal estimated value of the current operating parameters of the target power battery；
Assessment of failure device, the assessment of failure device is based on the estimated value and the other sensor mesh collected
The actual value of the current operating parameters of power battery is marked to assess the current working status of the target power battery, and when true
Troubleshooting is sent to fault processing unit when the current working status of the fixed target power battery is abnormal to instruct to touch
Send out fault handling operation；
Fault processing unit, the fault processing unit are held after receiving the troubleshooting instruction from assessment of failure device
The row fault handling operation.
In scheme disclosed above, it is preferable that described associated with the current operating parameters of target power battery
The value of the current working current of target power battery described in signal designation.
In scheme disclosed above, it is preferable that the current operating parameters of the target power battery are the targets
Power battery works as front voltage.
In scheme disclosed above, it is preferable that the parameter estimator by using Kalman filtering algorithm and
Battery equivalent circuit model corresponding with the target power battery is joined to calculate the work at present of the target power battery
Several estimated values.
In scheme disclosed above, it is preferable that the assessment of failure device assesses the target power as follows
The current working status of battery: the current operating parameters of the target power battery are repeatedly calculated with predetermined time interval
Deviation between the actual value of the current operating parameters of estimated value and the target power battery；If in the continuous of pre-determined number
It is more than scheduled second threshold that calculated deviation, which is greater than the number of scheduled first threshold, during computing repeatedly, it is determined that institute
The current working status for stating target power battery is abnormal and sends troubleshooting instruction to the fault processing unit.
The purpose of the present invention is also achieved through the following technical solutions:
A kind of power cell of vehicle method for diagnosing faults comprising the following steps:
(A1) signal associated with the current operating parameters of target power battery is acquired by sensor, and be based on therewith
The signal calculates the estimated value of the current operating parameters of the target power battery；
(A2) work at present based on the estimated value and other sensor the target power battery collected
The actual value of parameter assesses the current working status of the target power battery；
(A3) fault handling operation is triggered when the current working status for determining the target power battery is abnormal.
Power cell of vehicle method for diagnosing faults disclosed in this invention and equipment have the advantages that due to without using
Redundant sensor, thus can either accurate evaluation power battery current working status and cost is relatively low.
Detailed description of the invention
In conjunction with attached drawing, technical characteristic of the invention and advantage will be more fully understood by those skilled in the art, in which:
Fig. 1 is the schematic diagram of the power cell of vehicle failure diagnosis apparatus of embodiment according to the present invention；
Fig. 2 is the flow chart of the power cell of vehicle method for diagnosing faults of embodiment according to the present invention.
Specific embodiment
Fig. 1 is the schematic diagram of the power cell of vehicle failure diagnosis apparatus of embodiment according to the present invention.Such as Fig. 1
Shown, power cell of vehicle failure diagnosis apparatus disclosed in this invention includes parameter estimator 1, assessment of failure device 2 and event
Hinder processing unit 3.1 receiving sensor of parameter estimator is collected related to the current operating parameters of target power battery
The signal of connection, and calculate based on the signal estimated value of the current operating parameters of the target power battery.The assessment of failure
The reality of current operating parameters of the device 2 based on the estimated value and other sensor the target power battery collected
Value assesses the current working status of the target power battery, and when the work at present shape for determining the target power battery
Troubleshooting instruction is sent to trigger fault handling operation to fault processing unit 3 when state is abnormal.The troubleshooting list
Member 3 executes the fault handling operation after receiving the troubleshooting instruction from assessment of failure device 2.
Preferably, in power cell of vehicle failure diagnosis apparatus disclosed in this invention, described and target power battery
The associated signal designation of current operating parameters described in target power battery current working current value.
Preferably, in power cell of vehicle failure diagnosis apparatus disclosed in this invention, the target power battery
Current operating parameters are that the target power battery works as front voltage.
Preferably, in power cell of vehicle failure diagnosis apparatus disclosed in this invention, the parameter estimator 1 passes through
The mesh is calculated using Kalman filtering algorithm and battery equivalent circuit model corresponding with the target power battery
Mark the estimated value of the current operating parameters of power battery.
Preferably, in power cell of vehicle failure diagnosis apparatus disclosed in this invention, the assessment of failure device 2 is with such as
Under type assesses the current working status of the target power battery: it is dynamic that the target is repeatedly calculated with predetermined time interval
It is inclined between the actual value of the current operating parameters of the estimated value of the current operating parameters of power battery and the target power battery
Difference；If the calculated deviation in calculating process of continuously repeating in pre-determined number is greater than the number of scheduled first threshold and is more than
Scheduled second threshold (such as thering is Kx calculated result to be located at except zone of reasonableness in calculating at Ky times), it is determined that the mesh
The current working status of mark power battery be abnormal (such as voltage and or current sampled data occur abnormal) and to described therefore
Hinder processing unit 3 and sends troubleshooting instruction.
Therefore power cell of vehicle failure diagnosis apparatus disclosed in this invention has the advantages that due to being not necessarily to
Using redundant sensor, thus can either accurate evaluation power battery current working status and cost is relatively low.
Fig. 2 is the flow chart of the power cell of vehicle method for diagnosing faults of embodiment according to the present invention.As shown in Fig. 2,
It is dynamic by sensor acquisition and target that power cell of vehicle method for diagnosing faults disclosed in this invention comprises the steps of (A1)
The associated signal of the current operating parameters of power battery, and the current work of the target power battery is calculated based on the signal therewith
Make the estimated value of parameter；(A2) working as based on the estimated value and the other sensor target power battery collected
The actual value of preceding running parameter assesses the current working status of the target power battery；(A3) when determining the target power
Fault handling operation is triggered when the current working status of battery is abnormal.
Preferably, in power cell of vehicle method for diagnosing faults disclosed in this invention, described and target power battery
The associated signal designation of current operating parameters described in target power battery current working current value.
Preferably, in power cell of vehicle method for diagnosing faults disclosed in this invention, the target power battery
Current operating parameters are that the target power battery works as front voltage.
Preferably, in power cell of vehicle method for diagnosing faults disclosed in this invention, the step (A1) is further
It include: to be counted by using Kalman filtering algorithm and battery equivalent circuit model corresponding with the target power battery
Calculate the estimated value of the current operating parameters of the target power battery.
Preferably, in power cell of vehicle method for diagnosing faults disclosed in this invention, as follows described in assessment
The current working status of target power battery: the current work of the target power battery is repeatedly calculated with predetermined time interval
Make the deviation between the estimated value of parameter and the actual value of the current operating parameters of the target power battery；If at predetermined time
Several calculated deviations in calculating process that continuously repeat are greater than the number of scheduled first threshold more than scheduled second threshold
(such as thering is Kx calculated result to be located at except zone of reasonableness in calculating at Ky times), it is determined that the target power battery is worked as
Preceding working condition is abnormal (such as exception occurs in voltage and or current sampled data) and triggers fault handling operation.
Therefore power cell of vehicle method for diagnosing faults disclosed in this invention has the advantages that due to being not necessarily to
Using redundant sensor, thus can either accurate evaluation power battery current working status and cost is relatively low.
Although the present invention is described by above-mentioned preferred embodiment, way of realization is not limited to
Above-mentioned embodiment.It will be appreciated that in the case where not departing from spirit and scope of the present invention, those skilled in the art can be with
Different change and modification are made to the present invention.
Claims (4)
1. a kind of power cell of vehicle failure diagnosis apparatus, the power cell of vehicle failure diagnosis apparatus include:
Parameter estimator, the parameter estimator, which receives the first sensor work at present collected with target power battery, joins
The associated signals of number, and calculate based on the signal estimated value of the current operating parameters of the target power battery；
Assessment of failure device, the assessment of failure device are based on the estimated value and the second sensor target power collected
The actual value of the current operating parameters of battery assesses the current working status of the target power battery, and described in determine
Troubleshooting instruction is sent to trigger failure to fault processing unit when the current working status of target power battery is abnormal
Processing operation；
Fault processing unit, the fault processing unit execute institute after receiving the troubleshooting instruction from assessment of failure device
State fault handling operation；
Wherein, target power battery described in the signal designation associated with the current operating parameters of target power battery is worked as
The value of preceding operating current, the current operating parameters of the target power battery are that the target power battery works as front voltage.
2. power cell of vehicle failure diagnosis apparatus according to claim 1, which is characterized in that the parameter estimator is logical
It crosses using Kalman filtering algorithm and battery equivalent circuit model corresponding with the target power battery described in calculating
The estimated value of the current operating parameters of target power battery.
3. power cell of vehicle failure diagnosis apparatus according to claim 1, which is characterized in that the assessment of failure device with
The current working status of target power battery as described under type assessment: the target is repeatedly calculated with predetermined time interval
Between the actual value of the current operating parameters of the estimated value of the current operating parameters of power battery and the target power battery
Deviation；If pre-determined number continuously repeat calculated deviation in calculating process be greater than scheduled first threshold number it is super
Cross scheduled second threshold, it is determined that the current working status of the target power battery is abnormal and to the troubleshooting
Unit sends troubleshooting instruction.
4. a kind of power cell of vehicle method for diagnosing faults comprising the following steps:
(A1) signal associated with the current operating parameters of target power battery is acquired by first sensor, and be based on therewith
The signal calculates the estimated value of the current operating parameters of the target power battery；
(A2) current operating parameters based on the estimated value and second sensor the target power battery collected
Actual value assesses the current working status of the target power battery；
(A3) fault handling operation is triggered when the current working status for determining the target power battery is abnormal；
Wherein, target power battery described in the signal designation associated with the current operating parameters of target power battery is worked as
The value of preceding operating current, the current operating parameters of the target power battery are that the target power battery works as front voltage.
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| CN106842053A (en) * | 2017-02-08 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | Battery detection method and device |
| CN108732500B (en) * | 2017-04-18 | 2019-11-15 | 华为技术有限公司 | The estimation method and device of cell health state |
| CN108957349A (en) * | 2018-08-17 | 2018-12-07 | 北京航空航天大学 | A kind of lithium ion battery failure detection method and system |
| CN110610557A (en) * | 2019-09-11 | 2019-12-24 | 东软睿驰汽车技术（沈阳）有限公司 | Data sampling method and device |
| CN112660144B (en) * | 2020-12-04 | 2022-06-24 | 上汽通用五菱汽车股份有限公司 | Yaw rate filtering method, control terminal, vehicle and storage medium |
| CN113884884B (en) * | 2021-10-21 | 2022-07-26 | 山东大学 | Power battery pack fault diagnosis method and system based on correlation |
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| KR100969567B1 (en) * | 2008-07-04 | 2010-07-12 | 포항공과대학교 산학협력단 | Method and apparatus for detecting abnormal battery consumption of mobile devices |
| JP4835757B2 (en) * | 2010-01-08 | 2011-12-14 | 横河電機株式会社 | Battery characteristic evaluation device |
| JP5691592B2 (en) * | 2010-02-18 | 2015-04-01 | 日産自動車株式会社 | Battery state estimation device |
| JP5278508B2 (en) * | 2011-07-25 | 2013-09-04 | 横河電機株式会社 | Battery degradation determination apparatus and method |
| JP6026120B2 (en) * | 2012-03-19 | 2016-11-16 | 株式会社東芝 | Secondary battery internal resistance calculation device and internal resistance calculation method thereof, secondary battery abnormality detection device and abnormality detection method thereof, secondary battery degradation estimation device and degradation estimation method thereof |
| CN104656026B (en) * | 2014-11-13 | 2017-10-27 | 科力远混合动力技术有限公司 | A kind of hybrid power automobile battery overcharges diagnostic method and system |
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