CN112834937A - Method for detecting battery life through low-temperature discharge - Google Patents

Method for detecting battery life through low-temperature discharge Download PDF

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Publication number
CN112834937A
CN112834937A CN202110164748.5A CN202110164748A CN112834937A CN 112834937 A CN112834937 A CN 112834937A CN 202110164748 A CN202110164748 A CN 202110164748A CN 112834937 A CN112834937 A CN 112834937A
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CN
China
Prior art keywords
storage battery
battery
temperature
low
carried out
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Pending
Application number
CN202110164748.5A
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Chinese (zh)
Inventor
刘建楼
李亚辉
古利伟
李利通
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Fengfan Co Ltd
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Fengfan Co Ltd
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Priority to CN202110164748.5A priority Critical patent/CN112834937A/en
Publication of CN112834937A publication Critical patent/CN112834937A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/378Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392Determining battery ageing or deterioration, e.g. state of health

Abstract

A method for detecting the service life of a battery by low-temperature discharge is carried out according to the following steps: the detected storage battery is placed at the low temperature of-18 ℃ to-22 ℃ and 0.2C10A discharging for 2h and limiting current for 0.1C10A, constant voltage 2.3-2.4V/cell charging is carried out for 10h, and the cycle is 30 times; the detected storage battery is placed at 0.2 ℃ under the environment of minus 8 ℃ to minus 12 DEG C10A discharging for 2h and limiting current for 0.1C10A, constant voltage 2.3-2.4V/cell charging is carried out for 10h, and the cycle is 20 times; 0.1C of battery to be tested10Discharging A to 1.8V/cell to limit current to 0.1C10A, constant voltage 2.35V/cell charging is carried out for 24 h; detecting the capacity of the storage battery, and if the capacity is less than 80% of the rated capacity, ending the service life of the storage battery; if the rated capacity of the detected storage battery is more than 80%, repeating the steps a, b, c and d for six times to meet the requirement of six timesThe circulating storage battery is a qualified storage battery. The method ensures the reliability and the authenticity of the detection result of the battery, and the qualified lead-acid storage battery detected by the method has reliable service performance and stable operation in cold regions, and can meet the energy storage use requirement of the battery in high and cold environments.

Description

Method for detecting battery life through low-temperature discharge
Technical Field
The invention relates to a storage battery detection method, in particular to a method for detecting the service life of a storage battery through low-temperature discharge, belonging to the technical field of storage batteries.
Background
The fixed valve-controlled sealed lead-acid storage battery is applied to off-grid energy storage, has severe working environment conditions, and is quite partially used in occasions such as remote sentries, off-grid mobile base stations and the like. In winter, the storage battery can operate at very low temperature (0 ℃ to-20 ℃), which puts high requirements on the charge recovery capability of the battery in a low-temperature operation environment. The traditional valve-controlled sealed lead-acid storage battery has the problems of poor energy storage effect, short discharge time and short service life in cold winter, and can not meet the use requirements of users. The existing lead-acid storage battery service life detection method is carried out at normal temperature, so that the service condition of the storage battery in a low-temperature environment cannot be detected, and the detection result cannot reflect the actual performance of the storage battery in operation in a low-temperature state. In view of this, a method for detecting the battery life in a low-temperature environment needs to be designed to meet the use requirement of the lead-acid storage battery in a cold environment.
Disclosure of Invention
The invention aims to provide a method for detecting the service life of a battery by low-temperature discharge, which solves the problem that the operation environment of the storage battery is not matched with the detection condition, and the storage battery detected by the method can meet the performance requirement used under the low-temperature condition.
The problem of the invention is realized by the following technical scheme:
a method for detecting the service life of a battery by low-temperature discharge is carried out according to the following steps:
a. the detected storage battery is placed at the low temperature of-18 ℃ to-22 ℃ and 0.2C10A discharging for 2h and limiting current for 0.1C10A, constant voltage 2.3-2.4V/cell charging is carried out for 10h, and the cycle is 30 times;
b. the detected storage battery is placed at 0.2 ℃ under the environment of minus 8 ℃ to minus 12 DEG C10A discharging for 2h and limiting current for 0.1C10A, constant voltage 2.3-2.4V/cell charging is carried out for 10h, and the cycle is 20 times;
c. 0.1C of battery to be tested10Discharging A to 1.8V/cell to limit current to 0.1C10A, constant voltage 2.35V/cell charging is carried out for 24 h;
d. detecting the capacity of the storage battery, and if the capacity is less than 80% of the rated capacity, ending the service life of the storage battery;
and if the rated capacity of the detected storage battery is more than 80%, repeating the steps a, b, c and d for six times, wherein the storage battery meeting six cycles is a qualified storage battery.
In the method for detecting the service life of the battery by low-temperature discharge, after the step c, the detected storage battery is placed in a thermostatic chamber, and the step d is carried out after the temperature of the battery is raised to 25 +/-5 ℃.
In the method for detecting the service life of the battery by low-temperature discharge, the step a and the step b are carried out by placing the detected storage battery in a low-temperature box.
The invention relates to a detection method designed according to the special requirements of a fixed valve-regulated sealed lead-acid storage battery used in a cold environment. The method takes the cold temperature (-8 ℃ to-12 ℃) and the severe cold temperature (-18 ℃ to-22 ℃) of northern areas as the using environment, sets the detection steps and detects the low-temperature service life of the storage battery. The detection method is matched with the service conditions of the storage battery, can truly reflect the service life of the valve-controlled sealed lead-acid storage battery in a low-temperature environment, solves the contradiction that the existing detection method is not in accordance with the service requirements of the storage battery, and ensures the reliability and the authenticity of the detection result. The lead-acid storage battery qualified by the detection of the method has reliable service performance and stable operation in cold regions, can meet the requirement of energy storage of the battery in high and cold environments, and meets the requirement of users.
Detailed Description
The lower the working temperature of the lead-acid storage battery is, the more viscous the electrolyte is, the slower the ions move, the internal resistance is increased, and the charging and discharging capacities of the battery are reduced. The method is designed aiming at the use requirements of the fixed valve-controlled sealed lead-acid storage battery for off-grid energy storage in the cold area, and the low-temperature service life detection is carried out by selecting two temperature ranges of severe cold temperature of-18 ℃ to-22 ℃ and cold temperature of-8 ℃ to-12 ℃ in winter in most cold areas according to the actual operation environment in winter in the cold area and considering the discharge capacity of the battery in the low-temperature environment, wherein the temperature of-22 ℃ is the most extreme condition for normal operation of the battery. The test was carried out for batteries with a design capacity of 10hr (batteries for most off-grid energy storage applications) as follows: extracting a plurality of storage batteries from a batch of storage batteries as detected storage batteries; the first step is to place the detected accumulator in a low-temperature box, adjust the temperature to-18 ℃ to-22 ℃, and control the temperature to be 0.2 ℃ under the temperature condition10A discharging for 2h and limiting current for 0.1C10A constant voltage 2.3-2.4V/cell is charged for 10h, and the cycle is 30 times. In the second step, the detected storage battery is still arranged in a low-temperature box, the temperature is adjusted to be-8 ℃ to-12 ℃, and the temperature is controlled to be 0.2 ℃ under the temperature condition10A discharging for 2h and limiting current for 0.1C10A constant voltage 2.3-2.4V/cell is charged for 10h, and the cycle is 20 times. And thirdly, placing the detected storage battery in a thermostatic chamber with the temperature of 25 +/-5 ℃ to ensure that the temperature of the storage battery is raised to 25 +/-5 ℃. Fourth step 0.1C of battery to be tested10Discharging A to 1.8V/cell to limit current to 0.1C10A, constant voltage 2.35V/cell charging is carried out for 24 h; then detecting the capacity of the storage battery, and judging the end of the service life of the storage battery if the rated capacity of the detected storage battery is less than 80%; and if the rated capacity of the detected storage battery is larger than 80%, repeating the steps for the detected storage battery for six times, and judging the storage battery meeting six cycles as a qualified storage battery.
One specific example is given below:
randomly extracting a batch of storage batteries which have a rated capacity of 200Ah for 10hr and are fully charged (namely, a fully charged state); placing the storage battery in a low-temperature box at-20 ℃ at 0.2 DEG C10A discharging for 2h, limiting current for 0.1C10A constant voltage 2.3-2.4V/cell is charged for 10h, and the cycle is 30 times. Adjusting the temperature of the low-temperature box, and controlling the temperature of the storage battery to be 0.2 ℃ at-10 DEG C10A discharging for 2h and limiting current for 0.1C10A constant voltage 2.3-2.4V/cell is charged for 10h, and the cycle is 20 times. Taking out the storage battery from the low-temperature box, placing the storage battery into a thermostatic chamber, and detecting when the temperature of the storage battery is raised to 22 ℃, wherein the detection method comprises the following steps: 0.1C10Discharging A to 1.8V/cell to limit current to 0.1C10A constant voltage is 2.35V/cell, charging is carried out for 24h, and after charging is completed, the capacity of discharging according to the method is larger than 80% of the rated capacity.
The above process was performed six times in total, and the following table shows six battery test data.
Number of detections 1 2 3 4 5 6
10hr volume (Ah) 210.6 203.4 201.6 195 190 180
As can be seen from the above table, after 6 cycles of the tested battery, the capacity still remains 90% (180/200) of the rated capacity, which is greater than 80% of the standard requirement, indicating that the batch of batteries passes the test and is qualified, and can meet the user's requirement.
Years of actual operation show that the storage battery qualified by the method provided by the invention is used in cold regions, has stable running state and reliable performance, and can meet the requirement of energy storage of the battery in high and cold environments.

Claims (3)

1. A method for detecting the service life of a battery by low-temperature discharge is characterized by comprising the following steps:
a. the detected storage battery is placed at the low temperature of-18 ℃ to-22 ℃ and 0.2C10A discharging for 2h and limiting current for 0.1C10A, constant voltage 2.3-2.4V/cell charging is carried out for 10h, and the cycle is 30 times;
b. the detected storage battery is placed at 0.2 ℃ under the environment of minus 8 ℃ to minus 12 DEG C10A discharging for 2h and limiting current for 0.1C10A, constant voltage 2.3-2.4V/cell charging is carried out for 10h, and the cycle is 20 times;
c. 0.1C of battery to be tested10Discharging A to 1.8V/cell to limit current to 0.1C10A, constant voltage 2.35V/cell charging is carried out for 24 h;
d. detecting the capacity of the storage battery, and if the capacity is less than 80% of the rated capacity, ending the service life of the storage battery;
and if the rated capacity of the detected storage battery is more than 80%, repeating the steps a, b, c and d for six times, wherein the storage battery meeting six cycles is a qualified storage battery.
2. The method for detecting battery life through low-temperature discharge according to claim 1, wherein: and c, placing the detected storage battery in a thermostatic chamber after the step c, and performing the step d after the temperature of the battery is raised to 25 +/-5 ℃.
3. The method for detecting battery life through low-temperature discharge according to claim 2, wherein: and the step a and the step b are carried out by placing the detected storage battery in a low-temperature box.
CN202110164748.5A 2021-02-06 2021-02-06 Method for detecting battery life through low-temperature discharge Pending CN112834937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106885990A (en) * 2016-09-21 2017-06-23 蔚来汽车有限公司 Battery cycle life method of testing based on environment temperature
CN107167739A (en) * 2017-05-17 2017-09-15 力信(江苏)能源科技有限责任公司 A kind of electrokinetic cell life-span prediction method
CN110018424A (en) * 2018-01-05 2019-07-16 中国科学院上海硅酸盐研究所 The quickly method of detection cycle performance of battery
CN110308399A (en) * 2019-06-28 2019-10-08 国网天津市电力公司电力科学研究院 A kind of accelerated aging detection method suitable for substation's communication power supply lead-acid accumulator
CN111366863A (en) * 2020-03-13 2020-07-03 上海应用技术大学 Lithium ion battery service life acceleration pre-judging method based on low-temperature circulation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106885990A (en) * 2016-09-21 2017-06-23 蔚来汽车有限公司 Battery cycle life method of testing based on environment temperature
CN107167739A (en) * 2017-05-17 2017-09-15 力信(江苏)能源科技有限责任公司 A kind of electrokinetic cell life-span prediction method
CN110018424A (en) * 2018-01-05 2019-07-16 中国科学院上海硅酸盐研究所 The quickly method of detection cycle performance of battery
CN110308399A (en) * 2019-06-28 2019-10-08 国网天津市电力公司电力科学研究院 A kind of accelerated aging detection method suitable for substation's communication power supply lead-acid accumulator
CN111366863A (en) * 2020-03-13 2020-07-03 上海应用技术大学 Lithium ion battery service life acceleration pre-judging method based on low-temperature circulation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
安强新等: "阀控式铅酸蓄电池在内燃机车上的应用", 《电源技术》 *

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Application publication date: 20210525