CN114204145A - Charging method for internal formation of battery for electric forklift - Google Patents
Charging method for internal formation of battery for electric forklift Download PDFInfo
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- CN114204145A CN114204145A CN202111339621.9A CN202111339621A CN114204145A CN 114204145 A CN114204145 A CN 114204145A CN 202111339621 A CN202111339621 A CN 202111339621A CN 114204145 A CN114204145 A CN 114204145A
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- 238000007600 charging Methods 0.000 title claims abstract description 86
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002253 acid Substances 0.000 claims abstract description 25
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 238000010277 constant-current charging Methods 0.000 claims abstract description 5
- 239000003792 electrolyte Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- HOWHQWFXSLOJEF-MGZLOUMQSA-N systemin Chemical compound NCCCC[C@H](N)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(O)=O)C(=O)OC(=O)[C@@H]1CCCN1C(=O)[C@H]1N(C(=O)[C@H](CC(O)=O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H]2N(CCC2)C(=O)[C@H]2N(CCC2)C(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](NC(=O)[C@H](C)N)C(C)C)CCC1 HOWHQWFXSLOJEF-MGZLOUMQSA-N 0.000 claims 1
- 108010050014 systemin Proteins 0.000 claims 1
- 238000004880 explosion Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 abstract description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 abstract description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 2
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 12
- 238000003466 welding Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- 229910052924 anglesite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- H01M10/446—Initial charging measures
-
- 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
-
- 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
Abstract
The invention belongs to the technical field of lead storage batteries, and particularly relates to a battery internal formation charging method for an electric forklift. Connecting the positive electrode of a charge-discharge machine with the negative electrode of a battery, connecting the negative electrode with the positive electrode of the battery, filling acid into the battery, soaking the battery, starting the charge-discharge machine to charge the battery, and stopping charging after the charging time is up; and disassembling a power line connecting the charge and discharge machine and the battery, connecting the anode of the charge and discharge machine with the anode of the battery, connecting the cathode of the charge and discharge machine with the cathode of the battery, starting the charge and discharge machine for charging, wherein a charging system adopts multi-stage constant current charging, and the internalization of the battery is completed after the charging is finished. The invention solves the product quality problems of battery heating, short circuit, explosion, shortened service life and the like caused by micro cracks at the rosin joint part of the battery of the electric forklift, and simultaneously greatly improves the charging efficiency and saves the charging electric quantity.
Description
Technical Field
The invention belongs to the technical field of lead storage batteries, and particularly relates to a battery internal formation charging method for an electric forklift.
Background
At present, the charging method for the internal formation of the battery of the electric fork-lift truck mainly comprises a constant-current formation system and a multi-stage current formation system, and the two types of formation systems adopt the following production modes: and (3) filling acid into the battery assembled by the green plates, respectively connecting the positive electrode and the negative electrode of the battery with the positive electrode and the negative electrode of the charge and discharge machine after the acid filling battery is soaked for a certain time, and starting the formation in the battery.
At the beginning of the formation, the corrosion layer on the surface of the grid consists of PbO and Pb (OH) which do not have electric conductivity2The battery has large resistance, and needs to be formed by charging with small current in the first stage, wherein the current is generally 0.01-0.05 Ce A, and the charging time is about 1-2 h. After the corrosion layer and the adjacent diachylon layer have been oxidized, the cell voltage no longer rises and starts to decrease after reaching a maximum value, while in the positive plate (PbO)2+PbSO4) Of zone and of negative plate (Pb + PbSO)4) The volume of the region increases, at which point the formation current begins to increase.
However, in the first stage of the formation system, if the lug and the bus bar are not completely integrated during the welding/cast-welding of the electrode group, i.e. the lead dioxide is generated on the positive electrode bus bar in the cold welding, in the use process of the battery, along with the mutual transformation process of the lead dioxide and the lead sulfate, the gap of the cold welding part is gradually increased until the bus bar is broken, so that the cold welding is a big issue for battery manufacturers, and the cold welding can cause the product quality problems of battery heating, short circuit, explosion, shortened service life and the like. The positive plate of electric fork-lift battery is mostly the tubular polar plate, and its board ear thickness is about 6.5 millimeters, and the problem of rosin joint appears very easily with the busbar when utmost point crowd welds/cast joint, consequently adopts traditional charging process, has accelerated the crack of rosin joint position.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: according to the defects in the prior art, the charging method for the internal formation of the battery of the electric forklift is provided, the product quality problems of battery heating, short circuit, explosion, service life shortening and the like caused by micro cracks of a virtual welding part during welding/cast welding due to the thick lug of the positive plate of the battery of the electric forklift are solved, meanwhile, the charging efficiency is greatly improved, and the charging electric quantity is saved.
The invention relates to a charging method for battery internal formation for an electric forklift, which comprises the following steps:
(1) when the battery starts to be connected with the charge-discharge machine, connecting the positive electrode of the charge-discharge machine with the negative electrode of the battery, connecting the negative electrode of the charge-discharge machine with the positive electrode of the battery, filling acid into the battery, soaking the battery, starting the charge-discharge machine to charge the battery, and stopping charging after the charging time is reached;
(2) and after the charging is stopped, a power line connecting the charge and discharge machine and the battery is disassembled, the anode of the charge and discharge machine is connected with the anode of the battery, the cathode of the charge and discharge machine is connected with the cathode of the battery, the charge and discharge machine is started to charge, the charging system adopts multi-stage constant current charging, and the formation in the battery is completed after the charging is finished.
As a preferable scheme, in the step (1), the batteries to be subjected to battery container formation are connected in series to form a circuit, then the anode of the first battery in the circuit is connected with the cathode of the charge-discharge machine, the cathode of the last battery is connected with the anode of the charge-discharge machine, and then the batteries are subjected to acid filling and soaking.
Preferably, in the step (1), the batteries connected in series are placed on an acid circulating system during acid filling, the acid circulating system is started, and the automatic injection density of the batteries is 1.050 to 1.090g/m3Soaking the electrolyte at the temperature of 30 ℃ for 1.5-2.5 h, and then starting a charge and discharge machine for charging.
As a preferable scheme, in the step (1), after the battery is filled with acid and soaked, a charging and discharging machine is started to charge the battery, the charging current is 0.15-0.2 Ce A (Ce is the rated capacity of the battery), the time is 25-35 min, and the charging is stopped after the charging time is reached. At the stage, the micro-crack (cold-joint) part at the joint of the anode plate lug and the busbar is filled with the generated small-particle lead, so that the connection effect is realized.
As a preferable scheme, in the step (2), after the battery stops charging, the power line connecting the charge-discharge machine and the battery is detached, then the positive electrode of the charge-discharge machine is connected with the positive electrode of the first battery in the circuit, and the negative electrode of the charge-discharge machine is connected with the negative electrode of the last battery in the circuit.
As a preferable scheme, in the step (2), the charging mechanism of the multi-stage constant current charging includes the following stages:
the first stage is as follows: charging the battery by adopting current of 0.1 Ce-0.2 Ce A for 2 h-1.5 h;
and a second stage: charging the battery by adopting current of 0.3 Ce-0.4 Ce A for 12 h-10 h;
and a third stage: charging the battery by adopting current of 0.2 Ce-0.3 Ce A for 4-3 h;
a fourth stage: standing for 0.4-0.5 h;
the fifth stage: charging the battery by adopting current of 0.2 Ce-0.3 Ce A for 2 h-1.5 h;
the sixth stage: charging the battery by adopting current of 0.1 Ce-0.2 Ce A for 4-2 h;
a seventh stage: the battery is charged by adopting current of 0.05 Ce-0.1 Ce A, and the charging time is 5 h-3 h.
Preferably, in the step (2), after the sixth stage of charging is finished, the electrolyte of the acid circulation system is replaced by the electrolyte with the density of 1.290-1.295 g/m3(30 ℃) and then the seventh stage of charging.
And finishing the formation in the battery after the charging in the seventh stage.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the charging method for the internal formation of the battery of the electric forklift, the formation time is shortened from 36-48.5 hours to 22-30 hours on the premise of ensuring the product quality, the charging efficiency is greatly improved, the charging quantity is also shortened from 8.4 Ce-9.6 Ce to 5.6 Ce-6.27 Ce, and 32% -34.7% of the charging quantity is saved;
(2) in the first charging stage, small-particle lead is generated at the part (cold joint) with poor combination of the plate lug and the busbar of the positive electrode group, so that the gap during the cold joint is filled, the combination strength of the plate lug and the busbar is improved, and the probability of the product quality problems of heating, short circuit, explosion, short service life and the like of the battery caused by the cold joint is reduced.
Detailed Description
Embodiments of the present invention are further described below.
Example 1
At 4PzS480T2For example, the battery formation method provided by the invention is used for forming the battery, and the steps are as follows:
placing a group of batteries connected in series on an acid circulation system, connecting the positive electrode of the first battery with the negative electrode of a charge-discharge machine, connecting the negative electrode of the last battery with the positive electrode of the charge-discharge machine, installing a battery connector after connection, starting the acid circulation system, and automatically injecting the batteries with the density of 1.050g/m3Soaking the electrolyte at 30 ℃ for 1.5h, and then starting a charge-discharge machine to charge, wherein the charging current is 72A, and the charging time is 30 min. At the stage, the micro-crack (cold-joint) part at the joint of the anode plate lug and the busbar is filled with the generated small-particle lead, so that the connection effect is realized.
When the battery stops charging, a power line connecting the charge and discharge machine and the battery is disassembled, then the anode of the charge and discharge machine is connected with the anode of the first battery in the circuit, and the cathode of the charge and discharge machine is connected with the cathode of the last battery in the circuit.
And when the connection of the positive electrode and the negative electrode is confirmed to be correct, starting the charge and discharge machine to operate the formation parameters in the table 1, and performing internalization on the battery.
TABLE 14 PzS480T2Formation parameters in battery
And after the formation is finished, taking down the battery connector, folding down the power line connected with the charge and discharge machine, cleaning the surface of the battery, and packaging the battery and then sending the packaged battery into a warehouse for delivery.
Comparative example 1
At 4PzS480T2For example, the battery is formed by a conventional battery container formation method, and the steps are as follows:
placing a group of batteries connected in series on an acid circulation system, connecting the positive electrode of the first battery with the positive electrode of a charge-discharge machine, connecting the negative electrode of the last battery with the negative electrode of the charge-discharge machine, installing a battery connector after connection, starting the acid circulation system, and automatically injecting the batteries with the density of 1.050g/m3Soaking the electrolyte at 30 ℃ for 2h, and then starting a charge-discharge machine to charge, wherein formation parameters are shown in table 2. At this stage, the microcrack (cold joint) at the junction of the anode plate lug and the bus bar is filled with the generated lead dioxide product, and the product gradually becomes larger along with the charging and discharging, so that the crack gradually becomes wider, the crack becomes wider, the lead dioxide particles gradually increase, and the crack breaks over time.
TABLE 24 PzS480T2Conventional battery formation parameters
And after the formation is finished, taking down the battery connector, folding down the power line connected with the charge and discharge machine, cleaning the surface of the battery, and packaging the battery and then sending the packaged battery into a warehouse for delivery.
Example 2
Taking a 5DB500 battery as an example, the battery formation method provided by the invention is used for forming the battery, and the steps are as follows:
placing 24 series-connected 5DB500 batteries on an acid circulation system, connecting the positive electrode of the first battery with the negative electrode of a charge-discharge machine, connecting the negative electrode of the last battery with the positive electrode of the charge-discharge machine, installing a battery connector after connection, starting the acid circulation system,the automatic injection density of the battery is 1.090g/m3Soaking the electrolyte at 30 ℃ for 2.5h, and then starting a charging and discharging machine to charge, wherein the charging current is 100A, and the charging time is 25 min. At the stage, micro-cracks (cold-joint) positions at the joint of the anode plate lugs and the bus bar are filled with the generated lead particles, so that the connection effect is realized.
When the battery stops charging, a power line connecting the charge and discharge machine and the battery is disassembled, then the anode of the charge and discharge machine is connected with the anode of the first battery in the circuit, and the cathode of the charge and discharge machine is connected with the cathode of the last battery in the circuit.
And after the connection of the positive electrode and the negative electrode is confirmed, starting the formation parameters in the charging and discharging machine operation table 3, and forming the battery.
TABLE 35 DB500 Battery internalization parameters
And after the formation is finished, taking down the battery connector, folding down the power line connected with the charge and discharge machine, cleaning the surface of the battery, and packaging the battery and then sending the packaged battery into a warehouse for delivery.
Comparative example 2
Taking a 5DB500 battery as an example, the battery is formed by adopting a conventional battery internal formation method, and the steps are as follows:
placing a group of batteries connected in series on an acid circulation system, connecting the anode of the first battery with the anode of a charge-discharge machine, connecting the cathode of the last battery with the cathode of the charge-discharge machine, installing a battery connector after connection, starting the acid circulation system, and automatically injecting the batteries with the density of 1.090g/m3Soaking the electrolyte at 30 ℃ for 2.5h, and then starting a charge-discharge machine to charge, wherein formation parameters are shown in Table 4. At this stage, the microcrack (cold joint) at the junction of the anode plate lug and the bus bar is filled with the generated lead dioxide product, and the product gradually becomes larger along with the charging and discharging, so that the crack gradually becomes wider, the crack becomes wider, the lead dioxide particles gradually increase, and the crack breaks over time.
TABLE 45 DB500 conventional internalization parameters for batteries
And after the formation is finished, taking down the battery connector, folding down the power line connected with the charge and discharge machine, cleaning the surface of the battery, and packaging the battery and then sending the packaged battery into a warehouse for delivery.
The cell internal formation methods of examples 1-2 and comparative examples 1-2 were compared, and the results are shown in table 5.
TABLE 5 results of comparison of the Battery Container formation method of the present invention and the conventional Battery Container formation method
Item | Example 1 | Comparative example 1 | Example 2 | Comparative example 2 |
Formation time, h | 29.5 | 36 | 27 | 48.5 |
Charging amount, Ce | 5.65 | 8.4 | 22 | 9.6 |
As can be seen from table 5, compared with the conventional method, the battery container formation method of the present invention greatly improves the charging efficiency and simultaneously saves the charging power. In addition, in the charging process, lead is generated at the part (cold joint) with poor bonding between the plate lug and the bus bar of the positive electrode group, so that the gap in the cold joint is filled, the bonding strength between the plate lug and the bus bar is improved, and the probability of the product quality problems of heating, short circuit, explosion, short service life and the like of the battery caused by the cold joint is reduced.
Claims (7)
1. A charging method for internal formation of an electric forklift is characterized in that: the method comprises the following steps:
(1) when the battery starts to be connected with the charge-discharge machine, connecting the positive electrode of the charge-discharge machine with the negative electrode of the battery, connecting the negative electrode of the charge-discharge machine with the positive electrode of the battery, filling acid into the battery, soaking the battery, starting the charge-discharge machine to charge the battery, and stopping charging after the charging time is reached;
(2) and after the charging is stopped, a power line connecting the charge and discharge machine and the battery is disassembled, the anode of the charge and discharge machine is connected with the anode of the battery, the cathode of the charge and discharge machine is connected with the cathode of the battery, the charge and discharge machine is started to charge, the charging system adopts multi-stage constant current charging, and the formation in the battery is completed after the charging is finished.
2. The method of charging an electric forklift battery according to claim 1, comprising: in the step (1), batteries which need to be subjected to battery internalization are connected in series to form a circuit, then the anode of the first battery in the circuit is connected with the cathode of a charge-discharge machine, the cathode of the last battery is connected with the anode of the charge-discharge machine, and then the batteries are subjected to acid filling and soaking.
3. The method of charging the battery for the electric forklift according to claim 2, comprising: when acid is filled, the batteries connected in series are placed in an acid circulation systemIn the system, an acid circulation system is started, and the density of the battery at the temperature of 30 ℃ is 1.050 to 1.090g/m by automatic injection3And (3) soaking the electrolyte for 1.5-2.5 h, and then starting a charge and discharge machine to charge.
4. The method of charging an electric forklift battery according to claim 1, comprising: in the step (1), after the battery is filled with acid and soaked, a charging and discharging machine is started to charge the battery, the charging current is 0.15 Ce-0.2 Ce ampere, the charging time is 25 min-35 min, the charging is stopped after the charging time is reached, and Ce is the rated capacity of the battery.
5. The method of charging an electric forklift battery according to claim 1, comprising: in the step (2), after the battery stops charging, a power line connecting the charge and discharge machine and the battery is disassembled, then the anode of the charge and discharge machine is connected with the anode of the first battery in the circuit, and the cathode of the charge and discharge machine is connected with the cathode of the last battery in the circuit.
6. The method of charging an electric forklift battery according to claim 1, comprising: in the step (2), the charging mechanism of the multi-stage constant current charging comprises the following stages, wherein Ce is the rated capacity of the battery:
the first stage is as follows: charging the battery by adopting current of 0.1 Ce-0.2 Ce A for 2 h-1.5 h;
and a second stage: charging the battery by adopting current of 0.3 Ce-0.4 Ce A for 12 h-10 h;
and a third stage: charging the battery by adopting current of 0.2 Ce-0.3 Ce A for 4-3 h;
a fourth stage: standing for 0.4-0.5 h;
the fifth stage: charging the battery by adopting current of 0.2 Ce-0.3 Ce A for 2 h-1.5 h;
the sixth stage: charging the battery by adopting current of 0.1 Ce-0.2 Ce A for 4-2 h;
a seventh stage: the battery is charged by adopting current of 0.05 Ce-0.1 Ce A, and the charging time is 5 h-3 h.
7. The method of charging an electric forklift according to claim 6, comprising: after the charging in the sixth stage is finished, the electrolyte of the acid circulating system is replaced by the electrolyte with the density of 1.290-1.295 g/m at the temperature of 30 DEG C3And then the seventh stage of charging is performed.
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JPH0260074A (en) * | 1988-08-25 | 1990-02-28 | Shin Kobe Electric Mach Co Ltd | Charging method for sealed lead-acid battery and charger |
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CN101459258A (en) * | 2009-01-06 | 2009-06-17 | 江苏优德电源科技有限公司 | Internal chemical synthetic reverse charging chemical process for lead acid battery |
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CN102244301A (en) * | 2011-05-26 | 2011-11-16 | 江苏永达电源股份有限公司 | Container formation process for lead acid storage battery |
CN107732338A (en) * | 2016-10-27 | 2018-02-23 | 杨春晓 | The method for improving or extending lead-acid accumulator or battery pack service life |
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2021
- 2021-11-12 CN CN202111339621.9A patent/CN114204145B/en active Active
Patent Citations (7)
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JPH0260074A (en) * | 1988-08-25 | 1990-02-28 | Shin Kobe Electric Mach Co Ltd | Charging method for sealed lead-acid battery and charger |
JPH0888025A (en) * | 1994-09-16 | 1996-04-02 | Matsushita Electric Ind Co Ltd | Charging/discharging device for battery-jar formation of lead-acid battery |
JP2006120574A (en) * | 2004-10-25 | 2006-05-11 | Furukawa Battery Co Ltd:The | Lead-acid battery |
CN101459258A (en) * | 2009-01-06 | 2009-06-17 | 江苏优德电源科技有限公司 | Internal chemical synthetic reverse charging chemical process for lead acid battery |
CN102157755A (en) * | 2011-03-12 | 2011-08-17 | 淄博火炬能源有限责任公司 | Processing method of tubular lead-acid battery |
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CN107732338A (en) * | 2016-10-27 | 2018-02-23 | 杨春晓 | The method for improving or extending lead-acid accumulator or battery pack service life |
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