CN111653839B - Remote online desulphurization method for lead-acid battery - Google Patents
Remote online desulphurization method for lead-acid battery Download PDFInfo
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- CN111653839B CN111653839B CN202010481358.6A CN202010481358A CN111653839B CN 111653839 B CN111653839 B CN 111653839B CN 202010481358 A CN202010481358 A CN 202010481358A CN 111653839 B CN111653839 B CN 111653839B
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- 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
- H01M10/4242—Regeneration of electrolyte or reactants
-
- 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
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
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- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the technical field of lead-acid battery desulphurization, and particularly relates to a remote online desulphurization method for a lead-acid battery. The sulfur removal method is based on the existing battery remote service and intelligent management system, and comprises the following steps: the method comprises two stages of low-health-degree desulphurization and battery maintenance desulphurization of the battery; the two stages of sulfur removal are respectively designed with sulfur removal parameters which are set in the system; the method comprises the following specific steps: starting the battery to remove sulfur when the health degree of the battery is lower than a threshold value A or the battery has monomer lag; the charger carries out online desulphurization according to designed desulphurization parameters in the first time after the charging is finished; after the low-health-degree desulphurization is completed, the battery capacity is recovered, and then regular and quantitative battery desulphurization maintenance is carried out to inhibit the generation of battery vulcanization and consolidate the desulphurization effect; in addition, self-controlled sulfur removal is also included. The method has the advantages of simple flow, low cost, short time and good effect, and can effectively prolong the service life of the battery.
Description
Technical Field
The invention belongs to the technical field of lead-acid battery desulphurization, and particularly relates to a remote online desulphurization method for a lead-acid battery.
Background
The sulfur removal of the lead-acid battery is a very traditional method, namely, when the service time of the battery is sensed to be shorter and the service requirement cannot be met, the battery is pulled to a sulfur removal factory for sulfur removal, and the battery is pulled back after the sulfur removal is finished; that is, the problem of how to consolidate the solution after capacity recovery is not solved, and the sulfur removal parameters used by each sulfur removal plant are basically based on the Wa or Wsa charging curve. Thus, the traditional sulfur removal mode causes a serious problem that (1) the sulfur removal is carried out after the battery is extremely vulcanized, (2) the battery with serious vulcanization has poor sulfur removal effect, and (3) the effect cannot be maintained (strengthened) after the sulfur removal is finished.
How to give sulfur removal after the battery capacity has decayed to a threshold value (the maximum possibility of lead sulfate crystal reduction) is the key to solve the problem, and what parameters and what method are adopted, what method is adopted for maintenance (inhibition or delay of re-vulcanization) after the capacity is recovered after sulfur removal, whether convenience is brought or not and the like are all thought, and therefore, the invention provides a remote online sulfur removal method.
Disclosure of Invention
The invention aims to provide a convenient and long-term effective remote online sulfur removal method for a lead-acid battery.
At present, in the lead-acid battery industry, a battery remote service and intelligent management system is provided, the system comprises an evaluation system and a method related to the health degree of a battery, the method is based on the battery remote service and intelligent management system, and a lead-acid battery remote online sulfur removal method is further provided, and comprises the following steps: the method comprises two stages of low-health-degree desulphurization and maintainability desulphurization of the battery; the two stages of sulfur removal are respectively designed with sulfur removal parameters, see table 1 below, which are set in the system; the method comprises the following specific steps:
1. when the battery remote service and intelligent management system detects that the health degree of the battery is lower than a threshold value A (generally A is less than 70 percent) or the battery has a single body lagging, starting the battery to remove sulfur; here, the "cell lag" concept is that, in a battery pack in which several unit cells are connected in series, when a certain cell voltage is low, the cell is called "cell lag";
2. after the sulfur removal of the battery is started, the sulfur removal is carried out by a charger in the first time after the charging is finished, namely, the online sulfur removal is carried out; the invention carries out sulfur removal according to different designed sulfur removal parameters, and the sulfur removal parameters are shown in the following table 1. Sulfur removal at this stage, we call low battery health sulfur removal;
3. after the low-health-degree desulfurization is completed, the battery capacity is recovered, and the method also can be used for periodically and quantitatively carrying out the desulfurization maintenance on the battery so as to inhibit the vulcanization generation of the battery and consolidate the desulfurization effect. During this stage, the invention removes sulfur according to different sulfur removal parameters designed for different seasons to ensure effective maintenance of sulfur removal, the parameters for maintaining sulfur removal are shown in table 1. This stage of sulfur removal, we call battery maintenance sulfur removal;
TABLE 1 list of parameters for sulfur removal from batteries
Design description of battery sulfur removal parameters:
1. the sulfur removal parameters used are different when the battery is in different degrees of vulcanization, and the sulfur removal energy required for high (serious) degrees of vulcanization is higher, namely the sulfur removal parameters are also larger;
2. the sulfur removal is related to the ambient temperature, and generally, the higher the ambient temperature is, the less the maintenance frequency is, and the smaller the sulfur removal energy is; conversely, the lower the ambient temperature, the more frequent the maintenance, the greater the energy of sulfur removal. The environmental temperature is usually related to seasons, so the present invention divides the different environmental temperatures by four seasons, namely spring, summer, autumn and winter.
Experiments show that the battery sulfur removal parameter table designed by the method can meet the requirement of actual sulfur removal and has a very good sulfur removal effect.
In addition, the invention also comprises self-control sulfur removal, namely, manual remote intervention sulfur removal is carried out according to the specific condition of the battery.
In the invention, the self-control sulfur removal is usually carried out by professional (engineer) after the sulfur removal with low health degree is finished, and the sulfur removal parameter is usually 1.2-1.5C according to the effect analysis. A self-control sulfur removal page is arranged in a system menu, a professional selects a battery needing self-control sulfur removal according to the system monitoring condition, inputs sulfur removal parameters and issues a sulfur removal command, so that the system starts to execute self-control sulfur removal after the battery is charged for the time until a sulfur removal task is completed.
The method has the advantages that: the method has the advantages of simple flow, low cost, short time and good effect, and can effectively prolong the service life of the battery.
Detailed Description
The embodiment is that the Zibo tube type pregnant solution battery of a resultant forklift truck, manufactured by certain automobile body part Limited company in Shanghai city, has the number of 068#, the specification and model number of 480Ah-80V, and the equipment number: HDK80010002.
In the present invention, the battery health is defined conventionally as follows: the method is characterized in that after the charger finishes complete charging, namely the charger automatically stops charging, the battery is used, namely the battery discharges to reach the time of deep discharging, namely a charging and discharging cycle is set, and the actual accumulated discharging capacity is recorded as C a Converting it to a standard capacity C b Assuming the nominal rated capacity of the battery is C, the battery health ω is expressed as: ω = min ((C) b C + 20) × 100%, 100%); the current battery health is usually taken as the maximum value of 5 consecutive cycles. The actual discharge capacity C a Converted into standard discharge capacity C b The actual discharge capacity was converted into "the electrolyte was maintained at a reference temperature of 30 ℃ and a constant current, i.e., a current rate of 5 hours (denoted as I) 5 ) Discharge "current capacity.
The lead-acid battery remote online desulphurization method comprises the following specific steps:
(1) Installing equipment;
(2) The battery charges to accomplish full charge (the machine that charges of automatic shutdown), again through the battery use (discharge) to use equipment panel board pilot lamp suggestion need mend to charge and end (degree of depth discharge), if: at 2019-11-23;
(3) Starting charging (the battery health degree is 49.75%), entering low health degree (0.8C) for removing sulfur after the charger is finished, starting the forklift to use (discharge) when the sulfur removal is finished in 2019-11-24;
(4) Starting charging again (the battery health degree is 64.25%), simultaneously issuing a command of 'self-control sulfur removal' parameter 1.0C, entering self-control sulfur removal (1.0C) after the charger is finished, and starting the forklift to use (discharge) again when the battery is subjected to discharge (depth) from 2019-11-26 00;
(5) When the charging is completed by the charge/discharge cycle up to the 6 th cycle (every 6 charge/discharge cycles in this season), the maintenance charging is triggered to the parameter value assigned for completion.
Specific data are as follows
1. Historical cycle (desulfurize charge) data, see table 2.
Remarking:
(1) The battery had been used 1200 cycles (initial cycles) before the installation of the device;
(2) Cycle 2 is healthful (below threshold) sulfur removal;
(3) Cycle 3 is self-control sulfur removal;
(4) Cycle number 6 was maintenance sulfur removal.
2. And (3) sulphur removal instruction completion condition: see table 3.
3. Full charge and deep discharge data: see table 4.
4. Degree of health (below threshold) sulfur removal and maintenance sulfur removal:
(1) Low-health sulfur removal: judging that the first health degree (49.75%) is lower than the threshold value in (2019-11-23-28), and starting from 2019-11-24-26;
(2) Maintenance sulfur removal was performed at the 6 th cycle, and the assigned parameter was 0.2C. Such as: at 2019-11-29: 30:21 to 2019-11-29: 30:21 the completion of the maintenance sulphur removal (90.00 Ah).
5. Self-control sulfur removal:
at 2019-11-25 am 7:45 issues "self-control sulfur removal" parameters (1c, 480ah), and starts at 2019-11-25 at 56 to end at 2019-11-26 00.
6. The health degree of the battery:
(1) Cell health of 2019-11-23 cells before sulfur removal: namely, the health degree of the 1201 th cycle is: 49.75 percent;
(2) The system entered low health (49.75%) sulfur removal with a sulfur removal parameter of 0.8C, after which the new cell health after completion of the sulfur removal of 2019-11-25, i.e. the health of cycle 1202, was: 64.25 percent;
(3) Health degree after self-control desulfurization:
after the system performs self-control sulfur removal (parameter 1.0C), and the health degree of 019-11-27 06: 92.27 percent.
Comparison of the effects before and after sulfur removal: see table 6.
As can be seen from the above table, the remote intelligent online sulfur removal method has superior effect.
TABLE 2 data table of historical cycle times (equipment desulfur charging)
TABLE 3 Sulfur removal completion
TABLE 4 full charge and deep discharge data
TABLE 5, self-control of Sulfur removal parameters and Sulfur removal
TABLE 6 comparison of the effects before and after Sulfur removal
Claims (4)
1. A remote online sulfur removal method for a lead-acid battery is based on a battery remote service and an intelligent management system, and is characterized by comprising the following steps: the method comprises two stages of low-health-degree desulphurization and maintainability desulphurization of the battery; the two stages of sulfur removal are respectively designed with sulfur removal parameters which are set in the system as shown in the table below; the method comprises the following specific steps:
(1) When the battery remote service and intelligent management system detects that the health degree of the battery is lower than a threshold value A or the battery has a single body lagging, starting the battery to remove sulfur;
(2) After the battery is desulfurized and started, the charger carries out desulfurization in the first time after the charging is finished, namely, the online desulfurization is carried out; removing sulfur according to different designed sulfur removal parameters; the stage of sulfur removal is called as low-health-degree sulfur removal of the battery;
(3) After the low-health-degree desulphurization is completed, the battery capacity is recovered, and then regular and quantitative battery desulphurization maintenance is carried out to inhibit the generation of battery vulcanization and consolidate the desulphurization effect; in the stage, different sulphur removal parameters are designed according to different seasons to ensure effective maintenance of sulphur removal, and the stage is called as maintenance sulphur removal of the battery;
battery sulphur removal parameter table
The battery health is defined as follows: the method is characterized in that after the charger finishes complete charging, namely the charger automatically stops charging, the battery is used, namely the battery discharges to reach the time of deep discharging, namely a charging and discharging cycle is set, and the actual accumulated discharging capacity is recorded as C a Converting it to standard capacity C b Assuming the nominal rated capacity of the battery is C, the battery health ω is expressed as: ω = min ((C) b C + 20) × 100%, 100%); taking the maximum value of 5 continuous circulation times as the current battery health degree;
the "monomer lag" concept is as follows: in a battery pack formed by connecting a plurality of unit cells in series, when a certain cell voltage is low, the cell is said to be "behind the cell".
2. The method for remotely removing the sulfur from the lead-acid battery on line according to the claim 1, further comprising self-control sulfur removal, namely manual remote intervention sulfur removal according to the specific condition of the battery.
3. The remote online sulfur removal method for the lead-acid battery according to claim 2, wherein the self-control sulfur removal is performed by a professional, after the low-health sulfur removal is completed, the sulfur removal parameter is 1.2 to 1.5C according to the effect of the low-health sulfur removal: the system menu is provided with an 'automatic control sulfur removal' page, a professional selects a battery needing automatic control sulfur removal according to the system monitoring condition, inputs sulfur removal parameters and issues a sulfur removal command, and the system starts to execute automatic control sulfur removal after the battery is charged for the time until the sulfur removal task is completed.
4. The method for remote online sulfur removal from lead acid batteries according to claim 1, wherein the battery health threshold a is <70%.
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