CN113746166A - Charging control method for zinc-silver storage battery used for multiple times - Google Patents

Charging control method for zinc-silver storage battery used for multiple times Download PDF

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Publication number
CN113746166A
CN113746166A CN202110995821.3A CN202110995821A CN113746166A CN 113746166 A CN113746166 A CN 113746166A CN 202110995821 A CN202110995821 A CN 202110995821A CN 113746166 A CN113746166 A CN 113746166A
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China
Prior art keywords
charging
current
monomer
battery
mode
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Pending
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CN202110995821.3A
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Chinese (zh)
Inventor
张艳莹
苏建辉
覃韬
胥涛
李萌
余波
吴辉
郑维海
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Guizhou Meiling Power Supply Co Ltd
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Guizhou Meiling Power Supply Co Ltd
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Priority to CN202110995821.3A priority Critical patent/CN113746166A/en
Publication of CN113746166A publication Critical patent/CN113746166A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The scheme discloses a charging control method for a zinc-silver storage battery used for multiple times in the technical field of storage battery charging, wherein different charging control processes are automatically entered for charging control of the battery according to the acquisition and judgment of charging equipment on the voltage of a monomer before charging, each distribution domain corresponds to one charging control process, and a mode 1 is taken as an example, and a constant current I is taken as an example1Charging is started until one monomer reaches 1.96V and the voltage of the rest monomers is not lower than 1.90V, and then a small current I is converted1Charge 2 until one cell reaches the set value V1The time current enters a descending order, namely, each charging plateau is taken as I1Step size of 10 gradually decreases the charging current, only one cell reaches the set value V in each charging plateau step1The current dropped to the next charging plateau is charged continuously, when the charging current is dropped to the charging cut-off current, another monomer reaches the set value V1The charging can be terminated.

Description

Charging control method for zinc-silver storage battery used for multiple times
Technical Field
The invention belongs to the technical field of storage battery charging, and particularly relates to a charging control method for a zinc-silver storage battery used for multiple times.
Background
With the continuous development of national defense equipment in China, particularly the rapid rise of equipment in the space field, a power supply system of environmental equipment in the space field needs to meet long-term service and be used for many times. How to meet the long-term power utilization requirement of equipment with high reliability and high safety is worth paying attention and attention.
The zinc-silver storage battery is used by key type equipment and a man-carrying engineering system in China all the time due to high stability, reliability and safety, and along with the change of the power consumption requirement of the system, the zinc-silver storage battery needs to realize sealed charging, the cycle life needs to be prolonged from original weeks to dozens of weeks, and the wet life needs to reach 2 years. According to the characteristics of the battery and the specific conditions of the battery in the storage and use processes, the battery is reasonably maintained and charged, and an effective charging control method is designed, so that the battery can be ensured to satisfactorily complete the power supply task of equipment.
The different unit cell capacity states of the zinc-silver storage battery are represented by 4 distribution domains of unit cell open-circuit voltage before charging, as shown in fig. 1, which are respectively: all monomers have 1.57V < U < 1.65V; all monomers U is more than 1.57V, and the existing U is more than or equal to 1.65V; all monomers U is less than 1.65V, and U is less than or equal to 1.57V; the monomer is less than or equal to 1.57V, and the U is more than or equal to 1.65V. The existing zinc-silver storage battery has a single charging control method, the battery needs to open an air plug in the charging process, and is only suitable for the state below half charge of the battery, the using requirement of the battery in multiple states of multiple cycles cannot be met, and the problem of passivation of the battery due to long-time use cannot be solved; when the battery is charged in an unknown state, the state of the battery can be misjudged; the battery can not be charged for many times in a sealed state; the monovalent silver high-voltage state cannot be erased. The zinc-silver storage battery can not meet the use requirement of new assembly, and the application field of the zinc-silver storage battery is restricted.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a charging control method for a zinc-silver storage battery used for multiple times.
According to the charging control method for the zinc-silver storage battery used for multiple times, the charging control method is characterized in that the charging control method is used for acquiring and judging the voltage of a monomer before charging according to charging and discharging equipment, different charging control processes are automatically entered for controlling the charging of the battery, and each distribution domain corresponds to one charging control process, and the charging control method specifically comprises the following steps:
control flow of mode 1: when all the monomer U values are: 1.57V < U < 1.65V, using this mode, i.e.: at a constant current I1Charging is started until one monomer reaches 1.96V and the voltage of the rest monomers is not lower than 1.90V, timing is started according to a set time T, and a small current I is converted after the time T is up1Charge 2 until one cell reaches the set value V1The time current enters a descending order, namely, each charging plateau is taken as I1Step size of 10 gradually decreases the charging current, only one cell reaches the set value V in each charging plateau step1The current dropped to the next charging plateau is charged continuously, when the charging current is dropped to the charging cut-off current, another monomer reaches the set value V1The charging can be finished;
control flow of mode 2: when all the monomer U values are: all monomers U > 1.57V and there is U.gtoreq.1.65V, using this model, i.e.: starting charging with a cutoff current, charging with a charging current per charging plateau at I110 is span-up to constant current I1Then with I1The/10 is that the span is reduced to the cut-off current, the monomer voltage is detected by polling in the current rising process, and when the monomer voltage is lower than the set value V1When the voltage is higher than the set value V, the current continues to rise1The current enters a descending order, the charging is continued in the descending order mode which is the same as the mode 1, and when the charging current is reduced to the charging cut-off current, one monomer reaches a set value V1The charging can be finished;
control flow of mode 3: when all monomers areThe U value is: all monomers U < 1.65V and U < 1.57V present, this mode being: firstly, a constant current value I is used1Charging the battery for 1-2 h, and then charging the battery at a constant current value I2Discharging the battery for a time according to the current charge capacity and I2Determining that the discharge capacity is 80% of the charge capacity, and the monomer voltage is lower than a set value V in the discharge process2When the discharge is stopped; then charging the battery, wherein the charging control flow is the same as the mode 1;
control flow of mode 4: when all the monomer U values are: if the monomer is less than or equal to 1.57V and the U is more than or equal to 1.65V, the monomer abnormality phenomenon of the battery pack is indicated, and the battery pack is prompted to be replaced.
Constant current I in the scheme1The value is typically 1/10 for the capacity of the battery capacity. V1The determination of (1) is only required to ensure that no excessive gas is generated in the battery when the battery capacity meets the use requirement. I is2Determining according to the load current of the battery in actual use; v2To discharge the battery capacity to the remaining 20%, T is determined by the number of cells in the battery pack and can be generally set as: number of monomers × 30 seconds.
The working principle and the beneficial technical effects of the scheme are as follows: the control flow of mode 1 solves the problem of reliable charging of the battery in a low-capacity state. The control flow of mode 2 solves the problem of charging a battery in any state. The control flow of the mode 3 solves the problem that the battery is stored for a long time and the internal passivation is generated, so that the charging capacity is low, and the voltage V is set1The reasonable selection solves the problem that the battery can not be sealed and charged for many times. Constant current I1The reasonable setting of the charging process and the time T solves the problem of misjudgment of the monovalent silver high-voltage wave.
Further, the constant current I11/10 for the capacity of the battery.
Further, the V1The determination of (1) is only required to ensure that no gas is generated in the battery when the battery capacity meets the use requirement.
Further, the V220% of the battery capacity.
Further, the time T is the number of monomers × 30 seconds.
Drawings
FIG. 1 shows 4 distribution domains of open-circuit voltage existing before charging of a single cell of a zinc-silver storage battery;
FIG. 2 is a flow chart of mode 1 charging control;
fig. 3 is a mode 2 charging control flow diagram.
Detailed Description
The following is further detailed by way of specific embodiments:
a charging control method for a zinc-silver storage battery used for multiple times is characterized in that according to the collection and judgment of single voltage before charging of charging and discharging equipment, different charging control processes are automatically entered to carry out charging control on the battery, the capacity states of the single batteries of the zinc-silver storage battery are different and are reflected that 4 distribution domains exist in the open-circuit voltage of the single batteries before charging, as shown in figure 1, each distribution domain corresponds to one charging control process, and the charging control method specifically comprises the following steps:
in the control flow of mode 1, when all the monomer U values are: 1.57V < U < 1.65V, using this mode, i.e.: as shown in fig. 2: at a constant current I1Charging is started until one monomer reaches 1.96V and the voltage of the rest monomers is not lower than 1.90V, timing is started according to a set time T, and a small current I is converted after the time T is up1Charge 2 until one cell reaches the set value V1The time current enters a descending order, namely, each charging plateau is taken as I1Step size of 10 gradually decreases the charging current, only one cell reaches the set value V in each charging plateau step1The current dropped to the next charging plateau is charged continuously, when the charging current is dropped to the charging cut-off current, another monomer reaches the set value V1The charging can be finished;
in the control flow of mode 2, when all the monomer U values are: 1 all monomers U > 1.57V and there is U.gtoreq.1.65V, in this mode, i.e.: as shown in fig. 3: starting charging with a cutoff current, charging with a charging current per charging plateau at I110 is span-up to constant current I1Then with I1The/10 is that the span is reduced to the cut-off current, the monomer voltage is detected by polling in the current rising process, and when the monomer voltage is detectedThe pressure is lower than a set value V1When the voltage is higher than the set value V, the current continues to rise1The current enters a descending order, the charging is continued in the descending order mode which is the same as the mode 1, and when the charging current is reduced to the charging cut-off current, one monomer reaches a set value V1The charging can be finished;
control flow of mode 3: when all the monomer U values are: all monomers U < 1.65V and U < 1.57V present, this mode being: firstly, a constant current value I is used1Charging the battery for 1-2 hours, preferably 1.5 hours, and then charging the battery at a constant current value I2Discharging the battery for a time according to the current charge capacity and I2Determining that the discharge capacity is 80% of the charge capacity, and the monomer voltage is lower than a set value V in the discharge process2When the discharge is stopped; then charging the battery, wherein the charging control flow is the same as the mode 1;
control flow of mode 4: when all the monomer U values are: if the monomer is less than or equal to 1.57V and the U is more than or equal to 1.65V, the monomer abnormality phenomenon of the battery pack is indicated, and the battery pack is prompted to be replaced.
In the charging process of any mode, the voltage of the single battery is larger than the protection value V1When the charging is stopped, the charging is stopped.
Wherein: constant current I1The value is typically 1/10 for the capacity of the battery capacity. V1The determination of (1) is only required to ensure that no excessive gas is generated in the battery when the battery capacity meets the use requirement. I is2Determining according to the load current of the battery in actual use; v2To discharge the battery capacity to the remaining 20%, T is determined by the number of cells in the battery pack and can be generally set as: number of monomers × 30 seconds.
The specific implementation process is as follows:
if a battery consists of 20 single cells and has the capacity of 25Ah, the actual load current is 4A, and I is1＝2.5A,I2＝4A,T＝10min。

Claims (6)

1. A charging control method for a zinc-silver storage battery used for multiple times is characterized by comprising the following steps: according to the monomer voltage collection judgement before charging of charging and discharging equipment, independently get into different charging control processes and carry out charging control to the battery, every kind of distribution domain corresponds a charging control process, specifically as follows:
control flow of mode 1: when all the monomer U values are: 1.57V < U < 1.65V, using this mode, i.e.: at a constant current I1Charging is started until one monomer reaches 1.96V and the voltage of the rest monomers is not lower than 1.90V, timing is started according to a set time T, and a small current I is converted after the time T is up1Charge 2 until one cell reaches the set value V1The time current enters a descending order, namely, each charging plateau is taken as I1Step size of 10 gradually decreases the charging current, only one cell reaches the set value V in each charging plateau step1The current dropped to the next charging plateau is charged continuously, when the charging current is dropped to the charging cut-off current, another monomer reaches the set value V1The charging can be finished;
control flow of mode 2: when all the monomer U values are: all monomers U > 1.57V and there is U.gtoreq.1.65V, using this model, i.e.: starting charging with a cutoff current, charging with a charging current per charging plateau at I110 is span-up to constant current I1Then with I1The/10 is that the span is reduced to the cut-off current, the monomer voltage is detected by polling in the current rising process, and when the monomer voltage is lower than the set value V1When the voltage is higher than the set value V, the current continues to rise1The current enters a descending order, the charging is continued in the descending order mode which is the same as the mode 1, and when the charging current is reduced to the charging cut-off current, one monomer reaches a set value V1The charging can be finished;
control flow of mode 3: when all the monomer U values are: all monomers U < 1.65V and U < 1.57V present, this mode being: firstly, a constant current value I is used1Charging the battery for 1-2 h, and then charging the battery at a constant current value I2Discharging the battery for a time according to the current charge capacity and I2Determining that the discharge capacity is 80% of the charge capacity, and the monomer voltage is lower than a set value V in the discharge process2When the discharge is stopped; then charging the batteryThe electric control flow is the same as the mode 1;
control flow of mode 4: when all the monomer U values are: if the monomer is less than or equal to 1.57V and the U is more than or equal to 1.65V, the monomer abnormality phenomenon of the battery pack is indicated, and the battery pack is prompted to be replaced.
2. The charging control method for the multi-cycle use of the zinc-silver storage battery according to claim 1, characterized in that: in the mode 1, the mode 2 and the mode 3, the cell voltage is larger than the protection value V during the charging process1When the charging is stopped, the charging is stopped.
3. The charging control method for a zinc-silver storage battery used for a plurality of times according to claim 1 or 2, characterized in that: the constant current I11/10 for the capacity of the battery.
4. The charging control method for a zinc-silver storage battery used for a plurality of times according to claim 1 or 2, characterized in that: the V is1The determination of (a) may be made so as to ensure that no gas is generated in the battery when the battery capacity meets the use requirement.
5. The charging control method for a zinc-silver storage battery used for a plurality of times according to claim 1 or 2, characterized in that: the V is220% of the battery capacity.
6. The charging control method for a zinc-silver storage battery used for a plurality of times according to claim 1 or 2, characterized in that: the time T is the number of monomers × 30 seconds.
CN202110995821.3A 2021-08-27 2021-08-27 Charging control method for zinc-silver storage battery used for multiple times Pending CN113746166A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115832480A (en) * 2022-11-28 2023-03-21 贵州梅岭电源有限公司 Charging control method for high-power zinc-silver storage battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115832480A (en) * 2022-11-28 2023-03-21 贵州梅岭电源有限公司 Charging control method for high-power zinc-silver storage battery

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