CN106353689B - System and method for rapidly screening ex-service storage batteries - Google Patents
System and method for rapidly screening ex-service storage batteries Download PDFInfo
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- CN106353689B CN106353689B CN201610822039.0A CN201610822039A CN106353689B CN 106353689 B CN106353689 B CN 106353689B CN 201610822039 A CN201610822039 A CN 201610822039A CN 106353689 B CN106353689 B CN 106353689B
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- 238000012360 testing method Methods 0.000 claims description 112
- 238000001514 detection method Methods 0.000 abstract description 15
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- G—PHYSICS
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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Abstract
The invention provides a system and a method for rapidly screening retired storage batteries, wherein the system comprises: the system comprises a tester, a management platform, an intelligent client and a micro printer; the tester is communicated with the management platform and the intelligent client in a wireless communication mode, and the intelligent client is communicated with the management platform and the micro printer in a wireless communication mode. The invention can accurately, efficiently, conveniently and inexpensively eliminate the batteries which obviously do not have the echelon utilization value, greatly improves the field detection and screening efficiency of the storage batteries, reduces the cost and is suitable for the field detection application of large-scale echelon utilization of the storage batteries.
Description
Technical Field
The invention relates to a detection system for a retired storage battery, in particular to a system for rapidly screening the retired storage battery.
Background
Along with the rapid development of electric vehicles, the size of the storage battery for the electric vehicle is gradually enlarged, but due to the high performance requirement of the electric vehicle on the storage battery, when the performance of the storage battery is reduced to a certain degree (the capacity is attenuated to 70-80% of the rated capacity), the storage battery needs to be replaced in order to ensure the power performance, the driving range and the safety performance during the operation of the electric vehicle. The batteries retired from the electric automobile still have higher residual capacity, and the batteries are screened and regrouped, so that the batteries can be possibly applied to occasions with relatively good working conditions and relatively low requirements on the performance of the batteries, and the graded utilization of the retired batteries is realized.
After the storage battery is used on the electric automobile for a long time, the performance of the storage battery is obviously degraded, and some storage batteries possibly have no value of gradient utilization. Therefore, for a retired battery, it needs to be checked again to determine whether it has the possibility of being used in a ladder. For a storage battery with the possibility of gradient utilization, the single batteries are often not enough to be applied, and series-parallel combination is also needed. When the storage battery is recombined, the performance of the storage battery is required to be kept as consistent as possible. Therefore, the battery detection system is required to have a function of rearranging the detected batteries. The existing storage battery detection device mainly comprises: the device comprises a storage battery charging and discharging instrument, a storage battery open-circuit voltage tester, a fixed-frequency storage battery alternating current internal resistance tester and an alternating current impedance tester. The accumulator charging and discharging instrument usually performs 3 times of charging and discharging cycles on the accumulator by using the 1/3C multiplying power of the capacity of the accumulator, so that the test of one accumulator needs nearly one day, the efficiency is low, and the requirement of rapid detection on the detection site of the retired accumulator cannot be met; the storage battery open-circuit voltage tester only tests the voltage of the battery, does not correlate the open-circuit voltage with the charge state of the battery, and cannot reflect whether the battery has the condition of high self-discharge rate or internal micro short circuit, and the two batteries are likely to cause safety accidents in the use process of the battery and cannot judge whether the storage battery has the possibility of secondary utilization; the constant-frequency storage battery alternating-current internal resistance tester usually measures the internal resistance of a battery at 1000Hz, and because the electrochemical reaction in the battery is a continuous process, the alternating-current internal resistance of a certain frequency point can only reflect the electrochemical reaction process of a certain section in the battery, the internal resistance of the battery cannot be completely reflected, and the judgment on the value of whether the retired storage battery has gradient utilization is inaccurate; the alternating-current impedance tester scans the battery from high frequency to low frequency, one scanning process usually needs dozens of minutes, the requirement of quick detection on engineering application sites is not met, scanning equipment is expensive, the operation is complex, professional training is needed, and the detection cost is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the system and the method for rapidly screening the retired storage battery, which can accurately, efficiently, conveniently and inexpensively eliminate the batteries obviously without echelon utilization value, greatly improve the detection and screening efficiency of the storage battery and reduce the cost.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
a system for rapid screening of ex-service batteries, the system comprising: the system comprises a tester, a management platform, an intelligent client and a micro printer; the tester is communicated with the management platform and the intelligent client in a wireless communication mode, and the intelligent client is communicated with the management platform and the micro printer in a wireless communication mode.
Preferably, the tester is used for testing, screening and grading the batteries according to the sorting standard of the retired storage batteries, and uploading test data to the management platform; the management platform is used for storing and analyzing battery data, setting storage battery testing parameters and sorting standards and providing a battery matching scheme; the intelligent client is used for acquiring the test data of the tester and uploading the test data to the management platform to complete battery data query, statistics, parameter issuing operation and electronic tag scanning; the micro printer is used for printing an information label of a test battery, and comprises a sorting identifier, a battery number and battery parameters, and the information label has a pasting characteristic.
Preferably, the tester tests the open-circuit voltage and the alternating current internal resistance of the battery, and the internal resistance testing frequency is within the range of 0-100 Hz; the testing frequency and the storage battery sorting standard of the tester are issued by the management platform or set manually locally; the tester is provided with a storage unit, under the condition of no communication network, test data are stored in the storage unit, and are uploaded to the management platform when a communication network exists.
Preferably, the smart client is further configured to scan and read an electronic tag, a barcode or a two-dimensional code on the battery, associate the code of the battery with the test data, and write information into the electronic tag.
Preferably, the management platform stores data of all retired storage batteries within the management range of the management platform, wherein the data includes battery numbers, parameters, positions, sources, sorting categories, classification standards and grouping information, and the management platform analyzes, counts and generates reports on the battery data.
Preferably, the management platform screens, groups and schedules all batteries capable of being used in the echelon within the management range according to the requirement of the battery echelon utilization and the battery data transmitted by the tester.
Preferably, the method for rapidly screening the retired storage battery is characterized by comprising the following steps:
the tester tests the battery and reports the test result to the management platform;
sorting the batteries according to the test result;
and the management platform analyzes the test result, screens the batteries meeting the requirements and formulates a battery reassembling scheme.
Preferably, the step (1) comprises the following steps:
step 1-1, extracting a battery sample to be tested from batch retired storage batteries, testing the batteries, and obtaining a relation curve of battery internal resistance and battery residual capacity and a relation curve of open-circuit voltage and battery residual capacity under different testing frequencies;
step 1-2, analyzing the correlation curve, finding out a frequency point with strongest correlation between the internal resistance of the battery and the residual capacity of the battery, and taking the frequency point as the test frequency of the retired battery of the batch; finding out the corresponding internal resistance value of the battery, which enables the residual capacity to meet the echelon utilization requirement, under the frequency, and taking the internal resistance value as the internal resistance sorting standard of the batch of retired batteries; finding out a corresponding open-circuit voltage value which enables the residual capacity to meet the echelon utilization requirement as a voltage sorting standard of the batch of retired batteries;
step 1-3, inputting the testing frequency and the sorting standard of the batch of batteries to a management platform, and sending the testing frequency and the sorting standard to all testers participating in the batch of batteries in a broadcasting manner;
step 1-4, testing the batch of storage batteries by using a tester to obtain the internal resistance and open-circuit voltage of the storage batteries;
step 1-5, the internal resistance and open-circuit voltage of the storage battery are compared with the sorting standard by the tester, and if the internal resistance and the open-circuit voltage of the storage battery both meet the requirements, the battery is judged to be qualified; otherwise, judging the battery as unqualified;
and 1-6, the tester sends the battery test data and the sorting result to the intelligent client and the management platform.
Preferably, the step (2) comprises the steps of:
step 2-1, sequentially sticking electronic tags to the batteries to be tested;
step 2-2, after the battery test is finished, the tester sends the test data to the intelligent client;
step 2-3, the intelligent client automatically matches the test data with the battery uniform number generated by the management platform;
step 2-4, the intelligent client scans the electronic tags of the batteries in sequence and writes the serial numbers of the batteries and the test results into the electronic tags;
step 2-5, the intelligent client sends a printing command to the micro printer, the micro printer prints information labels according to the test result, and the labels are sequentially pasted on corresponding batteries;
and 2-6, the intelligent client sends the electronic tag number, the test data and the screening result of the battery to a management platform, and the management platform stores the data into a database.
Preferably, the step (3) comprises the following steps:
step 3-1, after the charging stations carry out field test on the battery, sending test data to a management platform, and storing and counting the data by the management platform;
3-2, preliminarily screening out batteries meeting the echelon utilization requirement by the management platform according to the requirement of battery echelon utilization and conditions including the station address, the model, the parameters and the service life of the storage battery;
3-3, further testing the preliminarily screened echelon utilization batteries, uploading test data to a management platform, and rejecting the problematic batteries by the management platform according to test results;
3-4, selecting batteries with similar parameters through the management platform to carry out regrouping to generate a grouping scheme;
and 3-5, issuing a battery matching scheme through the management platform, and sending the batteries to each battery echelon utilization user after the batteries are regrouped.
Compared with the prior art, the invention has the beneficial effects that:
the invention greatly improves the detection and screening efficiency of the storage battery and reduces the cost. The battery detection system can accurately, efficiently, conveniently and inexpensively eliminate batteries obviously without echelon utilization value, is suitable for field detection application of large-scale battery echelon utilization, and fills the blank of the large-scale battery echelon utilization field battery detection system.
Drawings
FIG. 1 is a schematic diagram of a system for rapidly screening ex-service storage batteries according to the present invention
FIG. 2 is a flow chart of a method for rapidly screening retired storage batteries according to the present invention
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the system for rapidly screening the retired battery according to the present invention includes: the tester, the management platform, the mobile phone client and the auxiliary equipment are provided with a micro printer.
(1) The tester comprises: the tester rapidly measures parameters such as voltage, internal resistance and the like of the storage battery on a storage battery storage site, and screens and grades the battery according to the sorting standard of the retired storage battery. The tester has the following characteristics:
1) the tester tests the open-circuit voltage and the alternating current internal resistance of the battery, and the internal resistance testing frequency is adjustable within the range of 0-100 Hz;
2) the test frequency and the sorting standard can be set by parameters issued by a management platform or can be set manually locally;
3) the tester is connected with the mobile phone client and the management platform through communication modes such as GPRS and Wifi, receives parameters sent by the management platform and uploads battery test data.
(2) A management platform: the management platform server stores the data of all the retired storage batteries in the management range of the management platform server, wherein the data comprises battery numbers, parameters, positions, sources, sorting categories, classification standards, grouping information and the like. And the management platform screens, groups and schedules all batteries which can be utilized in the echelon within the management range according to the requirement of battery echelon utilization and the battery data uploaded by the tester. Managers with authority can log in the platform through the Internet to manage the retired storage battery, and operations such as battery data query, statistics, battery grouping, report printing and the like are achieved.
(3) The mobile phone client side: the mobile phone client is connected with the management platform through communication modes such as GPRS and Wifi, and a battery uniform number generated by the management platform is obtained. Meanwhile, the wireless communication device is connected with the tester in a wireless communication mode, and can read the data of the tester and issue parameters; the battery testing and screening result can be printed into a stickable mark by being connected with the micro printer in a wireless communication mode; and the test result is written into the corresponding electronic tag by scanning the electronic tag on the battery so as to carry out the full-life management on the battery.
(5) A micro printer: the micro printer may print stickable labels. And the mobile phone client is connected with the mobile phone client in a wireless communication mode, and after the test of one group of batteries is finished, the mobile phone client sends a command of printing the classification label to the micro printer. Each label corresponds to a battery, information (optional) such as the ID number, the classification identification, the battery parameters and the like of the battery is printed on the label, and the label is pasted on the battery. The classification label is an obvious visual identification, so that an operator can conveniently and quickly identify the classification of the battery and carry out the next processing on the battery.
And (4) classification identification: batteries are classified into several categories after screening, for example: pass and fail, or class 1, class 2, class 3 … …. For the sake of distinction, the class identifier may be represented by color or number.
As shown in fig. 2, a method for rapidly screening retired storage batteries includes the following steps:
step 1, a tester tests a battery and reports a test result to a management platform;
the tester quickly measures parameters such as voltage, internal resistance and the like of the storage battery. In order to improve the accuracy and the rapidity of the diagnosis and the sorting of the batteries, the tester adopts variable frequency to measure the alternating internal resistance of the batteries for the following reasons:
generally, the smaller the remaining capacity of the battery, the larger the internal resistance of the battery, and the lower the open-circuit voltage. At present, most of battery detection devices adopt a fixed frequency of 1kHz to measure the alternating current internal resistance of a battery. According to a large number of theoretical researches and test results, the correlation between the residual capacity of the battery and the alternating current internal resistance of the battery is proved to be sensitive when the test frequency is in a low frequency range (about 0-100 Hz), so that the residual capacity of the retired storage battery cannot be accurately reflected by the internal resistance of the battery under the constant frequency test of 1 kHz. And because the most sensitive test frequency can be different for different types and batches of batteries, the test frequency is variable and adjustable, and the test frequency of the tester can be set to be the most sensitive frequency of the batch of batteries, so that the most accurate diagnosis result can be obtained.
The specific battery diagnosis method is as follows:
1) sampling test: and extracting a battery sample to be tested from the batch of retired storage batteries, and performing correlation test on the residual capacity, the test frequency, the internal resistance and the open-circuit voltage of the batteries to obtain a relation curve between the internal resistance and the residual capacity of the batteries and a relation curve between the open-circuit voltage and the residual capacity of the batteries under different test frequencies.
2) And (3) analysis: analyzing the correlation curve, and finding out a frequency point with the strongest correlation between the internal resistance of the battery and the residual capacity of the battery as the test frequency of the retired battery of the batch; finding out the corresponding internal resistance value of the battery, which enables the residual capacity to meet the echelon utilization requirement, under the frequency, and taking the internal resistance value as the internal resistance sorting standard of the batch of retired batteries; and finding out the corresponding open-circuit voltage value which enables the residual capacity to meet the echelon utilization requirement as the voltage sorting standard of the batch of retired batteries.
3) Issuing parameters: and inputting the test frequency and the sorting standard of the batch of batteries to a management platform, and sending the test frequency and the sorting standard to all testers participating in the batch of batteries in a broadcasting mode. Or a certain tester can be set through a mobile phone client or manually. The tester receives the setting command, adjusts the self-testing frequency, and sets the internal resistance and the voltage sorting standard.
4) And (3) testing: and testing the storage battery by using the tester by an operator to obtain the internal resistance and the open-circuit voltage of the storage battery.
5) And (3) diagnosis: the tester compares the internal resistance and the open-circuit voltage of the storage battery with the sorting standard, and if both of the internal resistance and the open-circuit voltage meet the requirements, the battery is judged to be qualified; otherwise, the battery is judged to be unqualified.
6) Uploading data: the tester sends the battery test data and the sorting result to the mobile phone client and the management platform through communication modes such as GPRS and wireless.
Step 2, sorting the batteries according to the test result;
the storage battery echelon utilization site has a large number of storage batteries which are stacked, and each battery must have a unique number for the convenience of distinguishing the storage batteries; after the battery test diagnosis, the battery needs to be classified. The management platform generates a group of battery numbers uniformly, sends the battery numbers to the mobile phone client and automatically matches the battery test data. By scanning the electronic tags, the mobile phone client writes the battery numbers and the test data into the electronic tags of each battery. The classification label is printed through the micro printer and is pasted on the storage battery to realize visual management.
The specific battery sorting method comprises the following steps:
1) and sequentially sticking electronic tags to a group of batteries to be tested. (if the electronic tag is already on the battery to be tested, this step is omitted)
2) After the battery group test is completed, the tester sends the test data to the mobile phone client.
3) And the mobile phone client automatically matches the test data with the unified serial number of the battery issued by the management platform.
4) And the mobile phone client sequentially scans the electronic tags of the group of batteries and writes the battery numbers and the test results into the electronic tags.
5) And the mobile phone client sends a printing command to the micro printer, and the micro printer prints the classified labels according to the test result and sequentially pastes the labels on the corresponding batteries.
6) The mobile phone client sends the electronic tag number, the test data and the screening result of the battery pack to the management platform, and the management platform stores the data into the database.
And 3, analyzing the test result by the management platform, screening the batteries meeting the requirements, and formulating a battery reassembling scheme.
The management platform receives field battery test data of different charging stations, analyzes the battery test data, sets storage battery screening and matching standards, screens out storage batteries meeting requirements, formulates a battery re-matching scheme, and performs unified scheduling on echelon utilization batteries of the stations.
The specific battery recombination method is as follows:
1) after each charging station carries out field test on the battery, the test data are sent to the management platform, and the management platform stores and counts the data.
2) And the management platform preliminarily screens out the batteries meeting the echelon utilization requirement according to the requirement of battery echelon utilization and conditions such as the station address, the model, the parameters, the service life and the like of the storage battery.
3) And further testing the preliminarily screened echelons by using the batteries, uploading the test data to the management platform, and rejecting the problematic batteries by the management platform according to the test result.
4) And selecting batteries with similar parameters through the management platform to carry out regrouping to generate a grouping scheme.
5) And issuing a battery matching scheme through the management platform, and sending the batteries to each battery echelon utilization user after the batteries are regrouped.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (7)
1. A method for rapidly screening ex-service storage batteries is characterized by comprising the following steps:
(1) the tester tests the battery and reports the test result to the management platform;
(2) sorting the batteries according to the test result;
(3) the management platform analyzes the test result, screens batteries meeting the requirements and formulates a battery reassembling scheme;
the step (1) comprises the following steps:
step 1-1, extracting a battery sample to be tested from batch retired storage batteries, testing the batteries, and obtaining a relation curve of battery internal resistance and battery residual capacity and a relation curve of open-circuit voltage and battery residual capacity under different testing frequencies;
step 1-2, analyzing the correlation curve, finding out a frequency point with strongest correlation between the internal resistance of the battery and the residual capacity of the battery, and taking the frequency point as the test frequency of the retired battery of the batch; finding out the corresponding internal resistance value of the battery, which enables the residual capacity to meet the echelon utilization requirement, under the frequency, and taking the internal resistance value as the internal resistance sorting standard of the batch of retired batteries; finding out a corresponding open-circuit voltage value which enables the residual capacity to meet the echelon utilization requirement as a voltage sorting standard of the batch of retired batteries;
step 1-3, inputting the testing frequency and the sorting standard of the batch of batteries to a management platform, and sending the testing frequency and the sorting standard to all testers participating in the batch of batteries in a broadcasting manner;
step 1-4, testing the batch of storage batteries by using a tester to obtain the internal resistance and open-circuit voltage of the storage batteries; step 1-5, the internal resistance and open-circuit voltage of the storage battery are compared with the sorting standard by the tester, and if the internal resistance and the open-circuit voltage of the storage battery both meet the requirements, the battery is judged to be qualified; otherwise, judging the battery as unqualified;
and 1-6, the tester sends the battery test data and the sorting result to the intelligent client and the management platform.
2. The method of claim 1, wherein the step (2) comprises the steps of:
step 2-1, sequentially sticking electronic tags to the batteries to be tested;
step 2-2, after the battery test is finished, the tester sends the test data to the intelligent client;
step 2-3, the intelligent client automatically matches the test data with the battery uniform number generated by the management platform;
step 2-4, the intelligent client scans the electronic tags of the batteries in sequence and writes the serial numbers of the batteries and the test results into the electronic tags;
step 2-5, the intelligent client sends a printing command to the micro printer, the micro printer prints information labels according to the test result, and the labels are sequentially pasted on corresponding batteries;
and 2-6, the intelligent client sends the electronic tag number, the test data and the screening result of the battery to a management platform, and the management platform stores the data into a database.
3. The method of claim 1, wherein the step (3) comprises the steps of:
step 3-1, after the charging stations carry out field test on the battery, sending test data to a management platform, and storing and counting the data by the management platform;
3-2, preliminarily screening out batteries meeting the echelon utilization requirement by the management platform according to the requirement of battery echelon utilization and conditions including the station address, the model, the parameters and the service life of the storage battery;
3-3, further testing the preliminarily screened echelon utilization batteries, uploading test data to a management platform, and rejecting the problematic batteries by the management platform according to test results;
3-4, selecting batteries with similar parameters through the management platform to carry out regrouping to generate a grouping scheme;
and 3-5, issuing a battery matching scheme through the management platform, and sending the batteries to each battery echelon utilization user after the batteries are regrouped.
4. System for the rapid screening of ex-service batteries, applied to the method for the rapid screening of ex-service batteries according to any one of claims 1 to 3, characterized in that it comprises: the system comprises a tester, a management platform, an intelligent client and a micro printer; the tester is communicated with the management platform and the intelligent client in a wireless communication mode, and the intelligent client is communicated with the management platform and the micro printer in a wireless communication mode; the tester is used for testing, screening and grading the batteries according to the sorting standard of the retired storage batteries, and uploading test data to the management platform; the management platform is used for storing and analyzing battery data, setting storage battery testing parameters and sorting standards and providing a battery matching scheme; the intelligent client is used for acquiring the test data of the tester and uploading the test data to the management platform to complete battery data query, statistics, parameter issuing operation and electronic tag scanning; the micro printer is used for printing an information label of a test battery, and comprises a sorting identifier, a battery number and battery parameters, and the information label has a characteristic of being capable of being pasted;
the tester tests the open-circuit voltage and the alternating current internal resistance of the battery, and the internal resistance testing frequency is within the range of 0-100 Hz; the testing frequency and the storage battery sorting standard of the tester are issued by the management platform or set manually locally; the tester is provided with a storage unit, under the condition of no communication network, test data are stored in the storage unit, and are uploaded to the management platform when a communication network exists.
5. The system of claim 4, wherein the smart client is further configured to scan and read an electronic tag, a bar code, or a two-dimensional code on the battery, associate the code of the battery with the test data, and write information to the electronic tag.
6. The system of claim 4, wherein the management platform stores data of all retired batteries within its management scope, including battery number, parameters, location, source, sorting category, classification standard, grouping information, and analyzes, counts, and generates reports on the battery data.
7. The system of claim 4, wherein the management platform screens, groups and schedules all the batteries available in the management range according to the requirements of the battery echelon utilization and the battery data transmitted by the tester.
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| CN102522794A (en) * | 2011-12-19 | 2012-06-27 | 惠州市恒晔科技有限公司 | Battery management system and method |
| CN102755966B (en) * | 2012-07-31 | 2014-04-09 | 河南省电力公司电力科学研究院 | Cascade utilization sorting evaluation method of power cell |
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