CN106199435A - A kind of electrokinetic cell performance estimating method - Google Patents
A kind of electrokinetic cell performance estimating method Download PDFInfo
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- CN106199435A CN106199435A CN201610473900.7A CN201610473900A CN106199435A CN 106199435 A CN106199435 A CN 106199435A CN 201610473900 A CN201610473900 A CN 201610473900A CN 106199435 A CN106199435 A CN 106199435A
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- lithium ion
- power storage
- ion power
- storage battery
- battery
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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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Abstract
The invention discloses a kind of electrokinetic cell performance estimating method, comprise the following steps: lithium ion power storage battery integral battery door bag is charged to 1.1 times of former rated voltage, lithium ion power storage battery integral battery door bag is discharged to 0.9 times of former rated voltage the most again；According to the data of battery management system record during test, discharge process is chosen multiple different dump energy point, reads the voltage of each lithium ion power storage battery series connection monomer；Reject voltage value and the intermediate voltage value deviation lithium ion power storage battery more than 3% to connect monomer, remaining lithium ion power storage battery connect monomer be qualified；Reject surface irregularity, have deformation, crackle and leakage lithium ion power storage battery series connection monomer；Reject internal resistance numerical value to connect with the middle internal resistance value deviation lithium ion power storage battery more than 20% monomer, remaining lithium ion power storage battery connect monomer be qualified.The present invention ensure that the accuracy of electrokinetic cell Performance Evaluation.
Description
Technical field
The present invention relates to new forms of energy dynamic lithium battery technical field, particularly a kind of electrokinetic cell performance estimating method.
Background technology
Lithium ion power storage battery, as a kind of environmental protection battery, has high-energy-density, high working voltage, high safety
The advantage such as performance and long life, therefore demonstrates excellent in terms of the new forms of energy energy storage such as portable electric appts, electric automobile
Prospect more.Electric automobile is higher for the performance requirement of lithium ion power storage battery, when lithium ion power storage battery uses one
After the section time causes capacity to decline, the power performance and continual mileage in order to make electric automobile disclosure satisfy that used in everyday wanting
Ask, need lithium ion power storage battery is replaced；And the lithium ion power storage battery changed from electric automobile, still
There is higher residual capacity, can apply in the device systems relatively low to battery performance requirements or occasion, to realize
The cascade utilization of lithium ion power storage battery.
Lithium ion power storage battery carrying out cascade utilization when, need to the lithium changed on electric automobile from
Sub-power accumulator carries out Performance Evaluation, thus carries out screening and guarantee that the lithium ion power storage battery filtered out can carry out step
Utilize.Lithium-ion-power cell carries out the key property parameter of Performance Evaluation and includes: the capacity of battery, internal resistance, charging and discharging curve,
Self discharges etc., judge the performance of battery and sort, and in this, as the groups of foundation of battery.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of electrokinetic cell performance estimating method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of electrokinetic cell performance estimating method, comprises the following steps:
Step one, the lithium ion power storage battery integral battery door bag changed on electric automobile is connected to industrial battery inspection
Survey discharge and recharge cashier's office in a shop；
Step 2, that lithium ion power storage battery integral battery door bag is charged to lithium ion power storage battery integral battery door bag is former specified
1.1 times of voltage, then keep 1.1 times of constant-voltage charges of the lithium ion power storage battery former rated voltage of integral battery door bag to charging
Electric current is decreased to the 5% of the lithium ion power storage battery former rated capacity of integral battery door bag, then stands lithium ion power storage battery whole
Body battery bag makes its temperature less than 30 DEG C；Lithium ion power storage battery integral battery door bag is discharged to lithium ion power the most again store
0.9 times of the former rated voltage of battery integral battery door bag；
The data of battery management system record when step 3, foundation test, choose multiple different dump energy in discharge process
Point, reads the voltage of each lithium ion power storage battery series connection monomer；
Step 4, the voltage number of each lithium ion power storage battery series connection monomer when different dump energy of combining step three
Value, the range of voltage values of major part lithium ion power storage battery series connection monomer is intermediate voltage value, rejects voltage value with middle
The magnitude of voltage deviation lithium ion power storage battery series connection monomer more than 3%, remaining lithium ion power storage battery series connection monomer is
Qualified；
Step 5, lithium ion power storage battery integral battery door bag is disassembled, then take out in step 4 test underproof lithium from
Sub-power accumulator series connection monomer, and reject surface irregularity, have the lithium ion power storage battery of deformation, crackle and leakage to connect
Monomer；
The internal resistance of remaining lithium ion power storage battery series connection monomer, major part lithium ion power after step 6, testing procedure five
The internal resistance value scope of accumulator series connection monomer be middle internal resistance value, rejects internal resistance numerical value and is more than 20% with middle internal resistance value deviation
Lithium ion power storage battery series connection monomer, it is qualified that remaining lithium ion power storage battery series connection monomer is；
Step 7, go out 10 lithium ions move at the lithium ion power storage battery of step 6 test passes random choose in monomer of connecting
Power accumulator series connection monomer, is placed on industrial battery discharge and recharge instrument and carries out a discharge and recharge, record each lithium ion power electric power storage
The capacity of pond series connection monomer, closes using the average size of above-mentioned 10 lithium ion power storage batteries series connection monomer as step 6 test
The capacity of the lithium ion power storage battery series connection monomer of lattice.
As the further improvement of technique scheme, in step 2, to lithium ion power storage battery integral battery door bag
The electric current of charging and discharging is 1/3rd of the lithium ion power storage battery former rated capacity of integral battery door bag；
In step 7, the electric current to lithium ion power storage battery Series Sheet bulk charging and electric discharge is that lithium ion power storage battery is whole
/ 3rd of the former rated capacity of body battery bag.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of electrokinetic cell performance estimating method provided by the present invention, carries out power current by modular performance estimating method
Pond Performance Evaluation, first carries out first voltage screening, then carries out outward appearance screening, carries out last sieve together finally by internal resistance measurement
Choosing such that it is able to ensure the accuracy of electrokinetic cell Performance Evaluation；In conjunction with inside battery Analysis of Structural Characteristics, fundamentally hold
The reason of battery performance decline, and then the safety and health status to battery be estimated, it is achieved the sorting to electrokinetic cell
Assessment.
Detailed description of the invention
Further describe the technology contents of the present invention below in conjunction with specific embodiments.
A kind of electrokinetic cell performance estimating method that the present embodiment is provided, comprises the following steps:
Step one, the lithium ion power storage battery integral battery door bag changed on electric automobile is connected to industrial battery inspection
Survey discharge and recharge cashier's office in a shop；
Step 2, that lithium ion power storage battery integral battery door bag is charged to lithium ion power storage battery integral battery door bag is former specified
1.1 times of voltage, then keep 1.1 times of constant-voltage charges of the lithium ion power storage battery former rated voltage of integral battery door bag to charging
Electric current is decreased to the 5% of the lithium ion power storage battery former rated capacity of integral battery door bag, then stands lithium ion power storage battery whole
Body battery bag makes its temperature less than 30 DEG C；Lithium ion power storage battery integral battery door bag is discharged to lithium ion power the most again store
0.9 times of the former rated voltage of battery integral battery door bag；Specifically, to lithium ion power storage battery integral battery door bag charging and discharging
Electric current is the lithium ion power storage battery former rated capacity of integral battery door bag 1/3rd；
The data of battery management system record when step 3, foundation test, choose multiple different dump energy in discharge process
Point, reads the voltage of each lithium ion power storage battery series connection monomer；
Step 4, the voltage number of each lithium ion power storage battery series connection monomer when different dump energy of combining step three
Value, the range of voltage values of major part lithium ion power storage battery series connection monomer is intermediate voltage value, rejects voltage value with middle
The magnitude of voltage deviation lithium ion power storage battery series connection monomer more than 3%, remaining lithium ion power storage battery series connection monomer is
Qualified；
Step 5, lithium ion power storage battery integral battery door bag is disassembled, then take out in step 4 test underproof lithium from
Sub-power accumulator series connection monomer, and reject surface irregularity, have the lithium ion power storage battery of deformation, crackle and leakage to connect
Monomer；
The internal resistance of remaining lithium ion power storage battery series connection monomer, major part lithium ion power after step 6, testing procedure five
The internal resistance value scope of accumulator series connection monomer be middle internal resistance value, rejects internal resistance numerical value and is more than 20% with middle internal resistance value deviation
Lithium ion power storage battery series connection monomer, it is qualified that remaining lithium ion power storage battery series connection monomer is；
Step 7, go out 10 lithium ions move at the lithium ion power storage battery of step 6 test passes random choose in monomer of connecting
Power accumulator series connection monomer, is placed on industrial battery discharge and recharge instrument and carries out a discharge and recharge, record each lithium ion power electric power storage
The capacity of pond series connection monomer, closes using the average size of above-mentioned 10 lithium ion power storage batteries series connection monomer as step 6 test
The capacity of the lithium ion power storage battery series connection monomer of lattice；Specifically, to lithium ion power storage battery Series Sheet bulk charging and putting
Electric current is the lithium ion power storage battery former rated capacity of integral battery door bag 1/3rd of electricity.
Preferably enforcement to the present invention is illustrated above, and certainly, the present invention can also use and above-mentioned enforcement
The form that mode is different, those of ordinary skill in the art are in the conversion of the equivalent made on the premise of spirit of the present invention
Or change accordingly, all should belong in protection scope of the present invention.
Claims (2)
1. an electrokinetic cell performance estimating method, it is characterised in that: comprise the following steps:
Step one, the lithium ion power storage battery integral battery door bag changed on electric automobile is connected to industrial battery inspection
Survey discharge and recharge cashier's office in a shop；
Step 2, that lithium ion power storage battery integral battery door bag is charged to lithium ion power storage battery integral battery door bag is former specified
1.1 times of voltage, then keep 1.1 times of constant-voltage charges of the lithium ion power storage battery former rated voltage of integral battery door bag to charging
Electric current is decreased to the 5% of the lithium ion power storage battery former rated capacity of integral battery door bag, then stands lithium ion power storage battery whole
Body battery bag makes its temperature less than 30 DEG C；Lithium ion power storage battery integral battery door bag is discharged to lithium ion power the most again store
0.9 times of the former rated voltage of battery integral battery door bag；
The data of battery management system record when step 3, foundation test, choose multiple different dump energy in discharge process
Point, reads the voltage of each lithium ion power storage battery series connection monomer；
Step 4, the voltage number of each lithium ion power storage battery series connection monomer when different dump energy of combining step three
Value, the range of voltage values of major part lithium ion power storage battery series connection monomer is intermediate voltage value, rejects voltage value with middle
The magnitude of voltage deviation lithium ion power storage battery series connection monomer more than 3%, remaining lithium ion power storage battery series connection monomer is
Qualified；
Step 5, lithium ion power storage battery integral battery door bag is disassembled, then take out in step 4 test underproof lithium from
Sub-power accumulator series connection monomer, and reject surface irregularity, have the lithium ion power storage battery of deformation, crackle and leakage to connect
Monomer；
The internal resistance of remaining lithium ion power storage battery series connection monomer, major part lithium ion power after step 6, testing procedure five
The internal resistance value scope of accumulator series connection monomer be middle internal resistance value, rejects internal resistance numerical value and is more than 20% with middle internal resistance value deviation
Lithium ion power storage battery series connection monomer, it is qualified that remaining lithium ion power storage battery series connection monomer is；
Step 7, go out 10 lithium ions move at the lithium ion power storage battery of step 6 test passes random choose in monomer of connecting
Power accumulator series connection monomer, is placed on industrial battery discharge and recharge instrument and carries out a discharge and recharge, record each lithium ion power electric power storage
The capacity of pond series connection monomer, closes using the average size of above-mentioned 10 lithium ion power storage batteries series connection monomer as step 6 test
The capacity of the lithium ion power storage battery series connection monomer of lattice.
A kind of electrokinetic cell performance estimating method the most according to claim 1, it is characterised in that: in step 2, to lithium
The electric current of ion power accumulator integral battery door bag charging and discharging is the former specified appearance of lithium ion power storage battery integral battery door bag
/ 3rd of amount；
In step 7, the electric current to lithium ion power storage battery Series Sheet bulk charging and electric discharge is that lithium ion power storage battery is whole
/ 3rd of the former rated capacity of body battery bag.
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| CN201610473900.7A CN106199435A (en) | 2016-06-27 | 2016-06-27 | A kind of electrokinetic cell performance estimating method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557469A (en) * | 2018-12-14 | 2019-04-02 | 广东电网有限责任公司 | Storage battery nuclear capacity data analysis method and device |
| CN110927604A (en) * | 2019-12-11 | 2020-03-27 | 内蒙古科技大学 | Method for detecting micro short circuit of battery under limit condition |
| CN113419185A (en) * | 2021-06-22 | 2021-09-21 | 盛德东南(福建)新能源科技有限公司 | Monomer capacity detection method and system for lithium ion power storage battery |
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| JP2001095160A (en) * | 1999-09-17 | 2001-04-06 | Matsushita Electric Ind Co Ltd | Method of detecting abnormal battery cell |
| CN101458310A (en) * | 2008-12-23 | 2009-06-17 | 天津力神电池股份有限公司 | Battery consistency evaluating method |
| CN102861726A (en) * | 2011-07-05 | 2013-01-09 | 广州丰江电池新技术股份有限公司 | Lithium secondary battery consistency screening method |
| CN103344921A (en) * | 2013-07-08 | 2013-10-09 | 华南师范大学 | Lithium-ion power battery health state evaluating system and method |
| CN103901350A (en) * | 2014-03-13 | 2014-07-02 | 奇瑞汽车股份有限公司 | Worn-out power battery secondary use screening method |
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2016
- 2016-06-27 CN CN201610473900.7A patent/CN106199435A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001095160A (en) * | 1999-09-17 | 2001-04-06 | Matsushita Electric Ind Co Ltd | Method of detecting abnormal battery cell |
| CN101458310A (en) * | 2008-12-23 | 2009-06-17 | 天津力神电池股份有限公司 | Battery consistency evaluating method |
| CN102861726A (en) * | 2011-07-05 | 2013-01-09 | 广州丰江电池新技术股份有限公司 | Lithium secondary battery consistency screening method |
| CN103344921A (en) * | 2013-07-08 | 2013-10-09 | 华南师范大学 | Lithium-ion power battery health state evaluating system and method |
| CN103901350A (en) * | 2014-03-13 | 2014-07-02 | 奇瑞汽车股份有限公司 | Worn-out power battery secondary use screening method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557469A (en) * | 2018-12-14 | 2019-04-02 | 广东电网有限责任公司 | Storage battery nuclear capacity data analysis method and device |
| CN109557469B (en) * | 2018-12-14 | 2020-10-13 | 广东电网有限责任公司 | Storage battery nuclear capacity data analysis method and device |
| CN110927604A (en) * | 2019-12-11 | 2020-03-27 | 内蒙古科技大学 | Method for detecting micro short circuit of battery under limit condition |
| CN113419185A (en) * | 2021-06-22 | 2021-09-21 | 盛德东南(福建)新能源科技有限公司 | Monomer capacity detection method and system for lithium ion power storage battery |
| CN113419185B (en) * | 2021-06-22 | 2024-02-02 | 盛德东南(福建)新能源科技有限公司 | Method and system for detecting monomer capacity of lithium ion power storage battery |
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