CN109596994B - Method for testing discharge storage capacity of battery with aqueous electrolyte system - Google Patents
Method for testing discharge storage capacity of battery with aqueous electrolyte system Download PDFInfo
- Publication number
- CN109596994B CN109596994B CN201811430402.XA CN201811430402A CN109596994B CN 109596994 B CN109596994 B CN 109596994B CN 201811430402 A CN201811430402 A CN 201811430402A CN 109596994 B CN109596994 B CN 109596994B
- Authority
- CN
- China
- Prior art keywords
- battery
- voltage
- electrode
- discharge
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Secondary Cells (AREA)
Abstract
The invention provides a method for testing the discharge storage capacity of a battery with an aqueous electrolyte system, which comprises the steps of taking the battery after activation and placing the battery in the batteryThe method comprises the steps of opening the top, placing a calomel electrode into a battery, injecting electrolyte, connecting the calomel electrode with a positive electrode and a negative electrode of the battery respectively, carrying out constant current discharge on the battery by adopting a certain discharge current I until the voltage of the negative electrode is 0-0.5V, recording the battery voltage, the voltage of the positive electrode and the voltage of the negative electrode in the discharge process of the battery at regular intervals, drawing a change curve of the voltages of the battery, the positive electrode and the negative electrode along with time in the same graph by taking the recording time as an X axis and the voltage as a vertical coordinate, finding out the time t1 corresponding to the initial point of the time change curve of the voltage of the positive electrode, finding out the time t2 corresponding to the intersection point of the time change curve of the voltage of the negative electrode and the time change curve of the voltage of the battery in the graph, and finally obtaining the dischargeStorage. The method is simple to operate and high in data accuracy.
Description
Technical Field
The invention relates to a method for testing the discharge storage capacity of a battery with an aqueous electrolyte system.
Background
The aqueous electrolyte system battery comprises nickel-hydrogen, nickel-cadmium, nickel-zinc and other batteries, the capacity of a negative electrode is slightly excessive in the battery design process, the part of the redundant positive electrode capacity of the negative electrode consists of two parts, namely discharge storage capacity and charge storage capacity, and the battery capacity is determined by the positive electrode; the discharge storage capacity is irreversible capacity generated in the battery charging process, and the charge storage capacity is designed as a negative electrode capacity-designed positive electrode capacity-discharge storage capacity; wherein the discharge reserve capacity is related to the low temperature power characteristics of the battery, the greater the discharge reserve capacity, the better the power characteristics of the battery at low temperature; the less the charge storage capacity is, the risk of overcharge exists in the charge-discharge cycle process of the battery, a large amount of hydrogen is generated, the internal pressure of the battery is larger, and the risk of leakage exists. The discharge storage capacity is in relatively large relation with the anode formula, the shelf life and temperature of the assembled battery, the formation scheme and the like, and the charge storage capacity is also related with the discharge storage capacity. Therefore, more and more technicians verify the feasibility of the design scheme through the discharge storage capacity, and how to measure the discharge storage capacity is an urgent issue to be solved.
Disclosure of Invention
The invention aims to provide a method for testing the discharge storage capacity of a battery with an aqueous electrolyte system, which is simple to operate and has higher data accuracy.
The invention is realized by the following scheme:
a method for testing the discharge storage capacity of a battery with an aqueous electrolyte system comprises the steps of opening the top of the activated battery, inserting a liquid connection part of a calomel electrode into the battery, injecting electrolyte into the battery until the liquid connection part of the calomel electrode is immersed by the electrolyte, respectively connecting the calomel electrode with a positive electrode and a negative electrode of the battery, then carrying out constant current discharge on the battery by adopting a certain discharge current I until the voltage of the negative electrode is 0-0.5V, recording the battery voltage, the positive electrode end voltage and the negative electrode end voltage in the discharge process of the battery at regular intervals, drawing the change curves of the voltages of the battery, the positive electrode end and the negative electrode end along with time in the same graph by taking the recorded time as an X axis and the voltage as a vertical coordinate, finding out the time t1 corresponding to the starting point of the time change curve of the voltage of the positive electrode as a straight line in the graph, finding out the time t2 corresponding to the intersection point of the time change curve of the negative electrode voltage and the time, finally according to formula CStorageThe discharge storage capacity C was calculated as I × (t 2-t 1)Storage. In the invention, the battery after activation is subjected to formation charging and discharging after being aged at a certain temperature and time after being assembled.
Further, the discharge current I is 0.2-1C.
Further, the interval time of the battery voltage, the positive terminal voltage and the negative terminal voltage in the discharging process of the battery is recorded to be 0.1-5 s.
Generally, the battery voltage, the positive terminal voltage and the negative terminal voltage are collected by a voltage collector. The calomel electrode is used as a reference electrode, the voltage of the positive electrode terminal is the voltage of the positive electrode relative to the calomel electrode, and the voltage of the negative electrode terminal is the voltage of the negative electrode relative to the calomel electrode. The voltage acquisition instrument is respectively connected with the positive and negative electrode ends of the battery, the two ends of the battery positive electrode and the calomel electrode which are connected, and the two ends of the battery negative electrode and the calomel electrode which are connected.
The method for testing the discharge storage capacity of the battery with the aqueous electrolyte system is simple to operate and high in data accuracy, the discharge storage capacity obtained through testing is used as a measuring and calculating basis of the charge storage capacity, then the low-temperature output characteristic of the battery can be deduced according to the discharge storage capacity, the cycle life of the battery can be deduced according to the charge storage capacity, the discharge storage capacity obtained through measuring and calculating can verify the design effect of various design schemes more accurately, an instructive data basis is provided for technical staff to determine or modify the design schemes, and the research and development period can be shortened.
Drawings
Fig. 1 is a graph showing the change in voltage with time of the battery, the positive terminal and the negative terminal in example 1.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the description of the examples.
Example 1
A method for testing the discharge storage capacity of a battery with an aqueous electrolyte system comprises the steps of taking the activated battery, opening the top of the battery, inserting a liquid joint part of a calomel electrode into the battery, injecting electrolyte into the battery until the liquid joint part of the calomel electrode is immersed by the electrolyte, respectively connecting the calomel electrode with a positive electrode and a negative electrode of the battery, then carrying out constant current discharge on the battery by adopting a discharge current I of 0.2-1C until the voltage of the negative electrode end is 0-0.5V, recording the battery voltage, the voltage of the positive electrode end and the voltage of the negative electrode end in the discharge process of the battery every 0.1-5 s, collecting the battery voltage, the voltage of the positive electrode end and the voltage of the negative electrode end by a voltage collector, drawing the change curves of the voltages of the battery, the positive electrode end and the negative electrode end along with time in the same figure by taking the recording,finding out the time t1 corresponding to the starting point of the time variation curve of the positive terminal voltage which is a gentle straight line, finding out the time t2 corresponding to the intersection point of the time variation curve of the negative terminal voltage and the time variation curve of the battery voltage, and finally obtaining the time t2 according to the formula CStorageThe discharge storage capacity C was calculated as I × (t 2-t 1)Storage。
For example, the battery is a nickel-hydrogen D-type battery which is manufactured and activated according to a certain design process, after a calomel electrode is placed and connected as required, constant current discharge is carried out on the battery by adopting a discharge current I of 0.2C until the voltage of a negative end is 0V, the battery voltage, the voltage of a positive end and the voltage of the negative end in the battery discharge process are recorded every 1s, time change curves of the battery voltage, the voltage of the positive end and the voltage of the negative end are drawn, as shown in figure 1, wherein- "represents the time change curve of the battery voltage," - - "represents the time change curve of the voltage of the positive end," … … "represents the time change curve of the voltage of the negative end, t1 is found out from figure 1 as 608s, t2 is 8514s, and the data are substituted into a formula CStorageThe discharge storage capacity C was calculated as I × (t 2-t 1)StorageIt was 2.64 Ah.
Claims (4)
1. A method for testing the discharge storage capacity of a battery with an aqueous electrolyte system is characterized by comprising the following steps: taking the activated battery, opening the top of the battery, inserting the liquid connection part of the calomel electrode into the battery, injecting electrolyte into the battery until the electrolyte submerges the liquid connection part of the calomel electrode, respectively connecting the calomel electrode with the positive electrode of the battery and the negative electrode of the battery, then adopting a certain discharge current I to carry out constant current discharge on the battery until the voltage of the negative electrode is 0-0.5V, recording the voltage of the battery, the voltage of the positive electrode and the voltage of the negative electrode in the discharge process of the battery at regular intervals, drawing the change curves of the voltage of the battery, the positive electrode and the negative electrode along with time in the same graph by taking the recorded time as an X axis and the voltage as a vertical coordinate, finding out the time t1 corresponding to the initial point of the time change curve of the voltage of the positive electrode which is in a gentle straight line in the graph, finding out the time t2 corresponding to the intersection point of the time change curve of the voltage of the, finally according to formula CStorageThe discharge storage capacity C was calculated as I × (t 2-t 1)Storage(ii) a The voltage of the positive terminal is the voltage of the positive electrode of the battery relative to the calomel electrode, and the voltage of the negative terminal is the voltage of the negative electrode of the battery relative to the calomel electrode.
2. The method for testing the discharge storage capacity of an aqueous electrolyte system battery according to claim 1, wherein: the discharge current I is 0.2-1C.
3. The method for testing the discharge storage capacity of an aqueous electrolyte system battery according to claim 1, wherein: and the interval time of the battery voltage, the positive terminal voltage and the negative terminal voltage in the discharging process of the battery is recorded to be 0.1-5 s.
4. The method for testing the discharge storage capacity of an aqueous electrolyte system battery according to any one of claims 1 to 3, wherein: and the battery voltage, the positive terminal voltage and the negative terminal voltage are all collected by a voltage collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811430402.XA CN109596994B (en) | 2018-11-28 | 2018-11-28 | Method for testing discharge storage capacity of battery with aqueous electrolyte system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811430402.XA CN109596994B (en) | 2018-11-28 | 2018-11-28 | Method for testing discharge storage capacity of battery with aqueous electrolyte system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109596994A CN109596994A (en) | 2019-04-09 |
| CN109596994B true CN109596994B (en) | 2020-10-13 |
Family
ID=65960587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811430402.XA Active CN109596994B (en) | 2018-11-28 | 2018-11-28 | Method for testing discharge storage capacity of battery with aqueous electrolyte system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109596994B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113253121B (en) * | 2021-07-07 | 2021-09-17 | 江苏和晖电动工具有限公司 | Battery monitoring method, monitoring system and electric tool |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08146105A (en) * | 1994-11-25 | 1996-06-07 | Yazaki Corp | Computing method for discharge characteristics of battery and measuring device for remaining capacity of battery |
| JP4010288B2 (en) * | 2003-07-29 | 2007-11-21 | ソニー株式会社 | Secondary battery remaining capacity calculation method and battery pack |
| CN1858613B (en) * | 2005-05-08 | 2010-08-11 | 王宏栋 | Detecting method and device for lithium ion cell material |
| CN101101323B (en) * | 2007-07-23 | 2010-09-08 | 周汉文 | Quick detection method for lithium battery capacity with maximum limit charge voltage 4.2V |
| JP2011208966A (en) * | 2010-03-29 | 2011-10-20 | Nec Corp | Remaining life estimation device, computer program thereof, and data processing method |
| CN103283083A (en) * | 2011-03-16 | 2013-09-04 | 松下电器产业株式会社 | Method for charging and discharging lithium secondary battery, and system for charging and discharging lithium secondary battery |
| CN102830361B (en) * | 2012-08-24 | 2015-01-28 | 海能达通信股份有限公司 | Battery capacity quick detection method and battery capacity quick detection system |
| CN103399274B (en) * | 2013-07-09 | 2015-12-02 | 超威电源有限公司 | A kind of method of testing of capacity of accumulator monolithic pole plate |
| JP6672743B2 (en) * | 2015-11-26 | 2020-03-25 | 住友電気工業株式会社 | Full charge capacity calculation device, computer program, and full charge capacity calculation method |
| CN106291386B (en) * | 2016-09-20 | 2019-06-11 | 深圳市鑫彩翼科技有限公司 | A kind of method of quick detection rechargeable battery capacity |
| CN106842059A (en) * | 2017-03-07 | 2017-06-13 | 河海大学常州校区 | Lithium battery both positive and negative polarity electrochemical properties on-line monitoring method based on three electrode measurements |
| CN108072845B (en) * | 2017-12-20 | 2019-12-24 | 上海理工大学 | Lithium battery capacity estimation method based on incomplete charging voltage curve |
| CN108630980A (en) * | 2018-05-09 | 2018-10-09 | 合肥国轩高科动力能源有限公司 | A kind of three electrode soft-package battery of lithium ion and its test method |
-
2018
- 2018-11-28 CN CN201811430402.XA patent/CN109596994B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109596994A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104502859B (en) | The detection of battery charge amount and cell health state, diagnostic method | |
| CN107991623B (en) | Battery ampere-hour integral SOC estimation method considering temperature and aging degree | |
| CN107658511B (en) | Power lithium battery combination method and dynamic lithium battery method for group matching | |
| CN104391252B (en) | Automobile lead-acid battery health state detection method | |
| CN109546248A (en) | A kind of optimization method of lithium ion battery charging strategy | |
| CN105759213A (en) | Method for measuring storage battery residual capacity SOC | |
| CN103257323A (en) | Method for estimating lithium ion battery remaining available capacity | |
| CN103728563A (en) | Method for measuring and calculating health status of batteries | |
| CN106249170B (en) | A kind of electrokinetic cell system power rating estimation method and device | |
| CN111463513B (en) | Method and device for estimating full charge capacity of lithium battery | |
| CN106199437A (en) | Electromobile battery dump energy monitoring method and monitoring system thereof | |
| CN103314303A (en) | Method for ascertaining the open circuit voltage of a battery, battery with a module for ascertaining the open circuit voltage and a motor vehicle having a corresponding battery | |
| CN109975715B (en) | Method for obtaining residual electric quantity of lithium ion battery module of electric vehicle | |
| CN105572601A (en) | Judgment method for the reason of lithium battery performance degradation | |
| CN105738821B (en) | The accurate method for calculating battery coulombic efficiency under different temperatures | |
| CN108732499A (en) | A kind of method and system of detection cycle life of lithium ion battery | |
| CN103529394A (en) | Capacity detection device and method of energy storage system | |
| CN101388562B (en) | Fast charging method | |
| CN112649750A (en) | Method for testing available capacity and capacity retention rate of battery module | |
| CN109596994B (en) | Method for testing discharge storage capacity of battery with aqueous electrolyte system | |
| CN111883865A (en) | Low-temperature charging method for lithium ion battery | |
| JP2014068467A (en) | Charge control device | |
| CN104810897A (en) | Quick charging simulation method | |
| CN109669138B (en) | Method for accurately measuring residual capacity of power lead storage battery pack | |
| CN107356880B (en) | Battery electric quantity detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210722 Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province Patentee after: NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS Address before: 410205 No. 348, west slope, Tongzi high tech Development Zone, Hunan, Changsha Patentee before: HUNAN COPOWER EV BATTERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |