WO2014078915A1 - Method and appliance for increasing energy efficiency in the production and operation of lead-acid cells and batteries - Google Patents

Method and appliance for increasing energy efficiency in the production and operation of lead-acid cells and batteries Download PDF

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Publication number
WO2014078915A1
WO2014078915A1 PCT/BG2013/000012 BG2013000012W WO2014078915A1 WO 2014078915 A1 WO2014078915 A1 WO 2014078915A1 BG 2013000012 W BG2013000012 W BG 2013000012W WO 2014078915 A1 WO2014078915 A1 WO 2014078915A1
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WIPO (PCT)
Prior art keywords
batteries
lead
cells
magnetic field
charging
Prior art date
Application number
PCT/BG2013/000012
Other languages
French (fr)
Inventor
Urii Petrov MARKOV
Original Assignee
Markov Urii Petrov
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Markov Urii Petrov filed Critical Markov Urii Petrov
Priority to EP13724154.3A priority Critical patent/EP2923408A1/en
Publication of WO2014078915A1 publication Critical patent/WO2014078915A1/en

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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
    • H01M10/06—Lead-acid accumulators
    • H01M10/12—Construction or manufacture
    • 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
    • H01M10/128—Processes for forming or storing electrodes in the battery container
    • 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
    • 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

Definitions

  • the invention relates to method and appliance for increasing the electrical and operational paiameters of lead-acid cells and batteries and will find application in the industry.
  • the lead-acid batteries belong to some of the first secondary current sources. Generally speaking, according to their design the lead-acid batteries are starter batteries, traction batteries and stationary batteries. The useful life of the different lead-acid battery types, depending on their modification, varies from 500 to 1800 cycles.
  • the lead-acid batteries have several disadvantages, which more or less limit their use, such as:
  • lead-acid batteries Due to these reasons, as well as in consequence of the large-scale development of the energy, transportation, communication and ' information technologies, several high operational requirements are imposed on the lead-acid batteries, i.e. the demand of lead-acid batteries with improved operational features is increased significantly. In turn, it necessitates the production and the operation of these secondary electric power sources to be put on a new technological level.
  • the invention is aimed at creating method and appliance for impact on the electromagnetic processes, mnning during the production and the operation of lead-acid batteries and cells, whereby a qualitatively new product with improved electrical and operational parameters is obtained.
  • the invention task is solved by the proposed method, together with an appliance for implementation of this method, subjects of the present invention.
  • the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the last 2 - 4 hours of the process of formation and / or charging.
  • the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the first 1/2 or 1/3 of the time period, necessary for formation and / or charging.
  • the appliance for implementation of the method, subject of the present invention includes a control module with software, comprising mutually connected modulating device, a source of modulated magnetic field, a generator or a synthesizer of sinusoidal modulating signal, a digital analogue converter (DAC) and an amplifier, whereby the source of modulated magnetic field includes at least one solenoid with or without magnetic core.
  • a control module with software comprising mutually connected modulating device, a source of modulated magnetic field, a generator or a synthesizer of sinusoidal modulating signal, a digital analogue converter (DAC) and an amplifier, whereby the source of modulated magnetic field includes at least one solenoid with or without magnetic core.
  • the proposed method and appliance according to the present invention provide conditions for accelerated and efficient running of the electrochemical and crystallization processes upon formation, charge and discharge of the lead-acid batteries and cells, whereby their electrical and operational parameters are improved.
  • Figure 1 represents an exemplary embodiment of the appliance, which implements the method for impact by means of low energy modulated magnetic field during a definite stage of production, or upon lead-acid cells and batteries charging and discharging;
  • Figure 2 Diagram, representing the useful life test data upon cycling of two experimental 2V/4,5 Ah lead-acid batteries with and without applying impact by means of low energy modulated magnetic field (MMF), only once during the initial recharge, after formation of these experimental lead-acid cells.
  • MMF low energy modulated magnetic field
  • the appliance for creation of low energy modulated magnetic field for impact on the electrochemical and crystallization processes, running during the production and operation of lead-acid cells and batteries includes a control module with software 1, comprising mutually connected modulating device 2, a source of modulated magnetic field 3, a generator or a synthesizer of sinusoidal modulating signal 4, a digital analogue converter (DAC) 5 and an amplifier 6.
  • the source of modulated magnetic field 3 may include one or more solenoids with core(s).
  • the function of the control module 1 is to create a time-controlled modulating sinusoidal signal with preset specific parameters in a frequency range from ⁇ 10 Hz to l 20 Hz, depending on the type, the purpose and the size of the lead-acid battery (batteries) or the lead-acid cell(s). According to the type, the size and the weight of the cell(s) or the battery (batteries), which the impact is applied on, the modulating signal can be amplified by an amplifier 6.
  • the method of increasing the energy efficiency upon production and operation of lead-acid cells and batteries is specified therein, that within a definite timeframe in the process of formation and / or upon charging of cells and batteries, they are affected by means of modulated low energy . magnetic field, created through the described appliance in a frequency range from l '10 Hz to l 20 Hz.
  • the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the last 2 - 4 hours of the process of formation and / or charging.
  • the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the first 1/2 or 1/3 of the time period, necessary for formation and / or charging.
  • both batteries are connected to cycling modules and become subject to cycling by charge current 0,23 A and charge voltage limitation up to 13,8 V, while the batteries are recharged by capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle.
  • the discharge is performed in 10 hours discharging mode with 0,23 A per cell current or up to the end discharging voltage 10,2 V.
  • an end discharging capacity of 1,48 Ah is read for the battery, which has been recharged without an impact by means of low energy modulated magnetic field.
  • a discharging capacity of 2,2 Ah is read for the battery, which has been affected by means of low energy modulated magnetic field.
  • the other lead-acid cell indicated as a control cell, which has not been affected by means of modulated magnetic field, is also recharged by charge current 0,5 A and a charge voltage limitation up to 2,5 V within 10 hours.
  • both cells are connected to cycling modules and become subject to cycling test by charge current 0,5 A and a charge voltage limitation up to 2,5 V, while the cells are recharged by capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle.
  • the useful life tests are performed in two stages:
  • the first stage comprises 10 cycles in 10 hour discharging mode by current 0,5 A until reaching the end discharging voltage 1,7 V and a following charge by charge current 0,5 A and a charge voltage limitation up to 2,5 V, while the cells are recharged by capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle.
  • the second test stage is performed in 20 hour discharging mode by current 0,25 A until reaching the end discharging voltage 1,7 V and a following charge by charge current 0,5 A and a charge voltage limitation up to 2,5 V, while the cells are recharged by "capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle.

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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)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to method and appliance for increasing the electrical and operational parameters of lead-acid cells and batteries and will find application in the industry. Method for increasing energy efficiency in the production and the operation of lead-acid cells and batteries, whereby the lead-acid cells and batteries with non-formed plates are poured on with electrolyte and become subject to formation and charging, characterized in that during a definite timeframe in the formation process of the positive and the negative plates and / or upon charging the cells and the batteries, they are affected by means of modulated low energy magnetic field in a frequency range from -10 Hz to 120 Hz.

Description

Method and appliance for increasing" energy efficiency in the production and operation of lead-acid cells and batteries
Field of the Invention
The invention relates to method and appliance for increasing the electrical and operational paiameters of lead-acid cells and batteries and will find application in the industry.
Background and Prior Art
The lead-acid batteries belong to some of the first secondary current sources. Generally speaking, according to their design the lead-acid batteries are starter batteries, traction batteries and stationary batteries. The useful life of the different lead-acid battery types, depending on their modification, varies from 500 to 1800 cycles.
The aggregate reactions, running during charging and discharging the lead-acid battery, are inveitible and are represented by the general chemical equation:
Pb02 + Pb + 2H2SO4 = 2PbSO4 + 2H20
The up to date lead-acid batteries have following advantages, which determine their large-scale use in different fields of the modern industry and the household:
- comparatively low price of production;
- reliable production and maintenance technology;
- low self-discharge;
- admissible high current discharge;
- put in mass production since dozens of years;
- totally recyclable;
- etc.
Beside these advantages, the lead-acid batteries have several disadvantages, which more or less limit their use, such as:
- impossibility to be stored for a long time period in a discharged condition, due to the sharp decrease of their electrical characteristics and the possibility to reach full unfitness.
- low specific energy;
- limited number of cycles up to the full discharge; - increase of the charging period after cycling by more heavy currents;
- etc.
Due to these reasons, as well as in consequence of the large-scale development of the energy, transportation, communication and ' information technologies, several high operational requirements are imposed on the lead-acid batteries, i.e. the demand of lead-acid batteries with improved operational features is increased significantly. In turn, it necessitates the production and the operation of these secondary electric power sources to be put on a new technological level.
One of the ways to improve the electrical parameters and to increase the efficiency of operation of these batteries is the application of an external physical impact on the processes, running during the lead-acid battery charging and discharging. Generally, the patent documents and publications with regard to the application of physical impacts, such like various sound, electromagnetic and mechanic impacts, concern the qualification of ready-made lead-acid batteries and lead-acid cells after their production. According to US 6,520,018 ultrasonic waves are used to qualify the whole assembly of the battery right after its production. There are several patent documents, such like US 7,592,094, which also relates to the application of ultrasonic waves, but during the lead-acid batteries' operation, whereby the elimination of the active mass degradation in the lead-acid battery plates is aimed, in order to improve the charge and discharge efficiency during their cycling. In accordance with JP 11- 312533 ultrasonic waves are applied during the process of forming lead- acid battery plates for a timeframe of about 5 minutes approximately, at definite time intervals, in order to eliminate the gases, absorbed on the positive and negative plate surfaces in the lead-acid batteries. The Bulgarian patent document No. 66146 discloses the application of ultrasonic waves during formation and charging of lead-acid batteries and cells, whereby the formation period is reduced and active mass structures, ensuring longer useful life of the batteries, are provided.
Disclosure of the Invention
The invention is aimed at creating method and appliance for impact on the electromagnetic processes, mnning during the production and the operation of lead-acid batteries and cells, whereby a qualitatively new product with improved electrical and operational parameters is obtained. The invention task is solved by the proposed method, together with an appliance for implementation of this method, subjects of the present invention.
According to the proposed method to improve energy efficiency in the production and operation of lead-acid cells and batteries, in a limited timeframe during the process of formation and / or charging cells and batteries, they are impacted by means of modulated low energy magnetic field in a frequency range from 10Ηζ to l20Hz.
In accordance with one embodiment of the method, the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the last 2 - 4 hours of the process of formation and / or charging.
In accordance with another embodiment of the method, the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the first 1/2 or 1/3 of the time period, necessary for formation and / or charging.
The appliance for implementation of the method, subject of the present invention, includes a control module with software, comprising mutually connected modulating device, a source of modulated magnetic field, a generator or a synthesizer of sinusoidal modulating signal, a digital analogue converter (DAC) and an amplifier, whereby the source of modulated magnetic field includes at least one solenoid with or without magnetic core.
The proposed method and appliance according to the present invention provide conditions for accelerated and efficient running of the electrochemical and crystallization processes upon formation, charge and discharge of the lead-acid batteries and cells, whereby their electrical and operational parameters are improved.
The advantages of the method and the appliance are as follows:
- increase of the lead-acid batteries / cells capacity by more than 20 %;
- shortening of the battery charging time and reduction of the energy, necessary to charge the lead-acid batteries or cells by more than 60 %;
- change in the morphology of lead and lead dioxide materials, building respectively the negative and the positive plates of the lead-acid batteries and cells; - providing conditions for more complete and efficient running of lead- acid batteries and cells charging and discharging reactions under low temperatures.
Explanation of the Enclosed Figures
The method and the appliance for improving the energy efficiency during the production and the operation of lead-acid cells and batteries is illustrated and explained, but not limited, by the enclosed figures, whereby:
Figure 1 represents an exemplary embodiment of the appliance, which implements the method for impact by means of low energy modulated magnetic field during a definite stage of production, or upon lead-acid cells and batteries charging and discharging;
Figure 2: Diagram, representing the useful life test data upon cycling of two experimental 2V/4,5 Ah lead-acid batteries with and without applying impact by means of low energy modulated magnetic field (MMF), only once during the initial recharge, after formation of these experimental lead-acid cells.
Exemplary Embodiment of the Invention
In accordance with the enclosed figure 1, the appliance for creation of low energy modulated magnetic field for impact on the electrochemical and crystallization processes, running during the production and operation of lead-acid cells and batteries, includes a control module with software 1, comprising mutually connected modulating device 2, a source of modulated magnetic field 3, a generator or a synthesizer of sinusoidal modulating signal 4, a digital analogue converter (DAC) 5 and an amplifier 6. The source of modulated magnetic field 3 may include one or more solenoids with core(s).
The function of the control module 1 is to create a time-controlled modulating sinusoidal signal with preset specific parameters in a frequency range from Γ10 Hz to l20 Hz, depending on the type, the purpose and the size of the lead-acid battery (batteries) or the lead-acid cell(s). According to the type, the size and the weight of the cell(s) or the battery (batteries), which the impact is applied on, the modulating signal can be amplified by an amplifier 6. The method of increasing the energy efficiency upon production and operation of lead-acid cells and batteries is specified therein, that within a definite timeframe in the process of formation and / or upon charging of cells and batteries, they are affected by means of modulated low energy . magnetic field, created through the described appliance in a frequency range from l'10 Hz to l20 Hz.
According to one embodiment of the aforementioned method, the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the last 2 - 4 hours of the process of formation and / or charging.
In accordance with another embodiment of the same method, the impact on the cells and batteries by means of modulated low energy magnetic field is effected within the first 1/2 or 1/3 of the time period, necessary for formation and / or charging.
The proposed method and appliance, subject of the present invention, are explained, but not limited, by the following examples:
Example 1
There are used 12V/2,3Ah valve regulated lead-acid batteries with glass wool separators. Both batteries are assembled with formed positive and negative plates and poured on with electrolyte, without recharging. Thereafter the batteries are plugged into a charging device for recharging within 4 hours by charge current 0,23 A and a limited charging voltage up to 2,3 V. One of the batteries is put in the appliance for generating a low energy modulated magnetic field. The impact by means of modulated magnetic field continues within the whole time period of 4 hours for battery recharging. After completing this procedure both batteries are connected to cycling modules and become subject to cycling by charge current 0,23 A and charge voltage limitation up to 13,8 V, while the batteries are recharged by capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle. The discharge is performed in 10 hours discharging mode with 0,23 A per cell current or up to the end discharging voltage 10,2 V. In this cycling mode after the first discharging cycle, an end discharging capacity of 1,48 Ah is read for the battery, which has been recharged without an impact by means of low energy modulated magnetic field. After the first discharging cycle, a discharging capacity of 2,2 Ah is read for the battery, which has been affected by means of low energy modulated magnetic field. The cycling of both batteries continues within 10 cycles in the above test mode, while it is read, that the battery, which has not been affected, reaches 2,0 Ah end discharging capacity after the 5th cycle and this capacity is kept up to the 10th cycle. The battery, which has been affected by means of modulated magnetic field, keeps a capacity of 2,3 A during the whole test period of 10 cycles. Furthermore it is read, that the duration of battery' charging for the battery, which has been recharged without an impact application, is 28 hours and 39 minutes after the 5th cycle, while the battery, which has been affected by means of modulated magnetic field during the initial recharging, is charged after the 5th cycles within 15 hours and 37 minutes.
Example 2
There are prepared 2V/4,5Ah lead-acid cells with 2 positive and 3 negative plates, previously formed, as well as with an AGM glass wool separator. These cells are poured on with H2SO4 having a concentration 1,28 g/cm3. Thereafter both cells are plugged into a charging device for recharging within 4 hours by charge current 0,5 A and a limited charging voltage up to 2,55 V. One of both cells is put in the appliance for generating a low energy modulated magnetic field. The impact by means of low energy modulated magnetic field is effected only once, after assembling the cell with the previously formed positive and negative plates, only within the first 4 hours of its recharging. Thereafter the recharging continues under the same conditions for additional 6 hours. The other lead-acid cell, indicated as a control cell, which has not been affected by means of modulated magnetic field, is also recharged by charge current 0,5 A and a charge voltage limitation up to 2,5 V within 10 hours. After completing the recharging, both cells are connected to cycling modules and become subject to cycling test by charge current 0,5 A and a charge voltage limitation up to 2,5 V, while the cells are recharged by capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle. The useful life tests are performed in two stages:
The first stage comprises 10 cycles in 10 hour discharging mode by current 0,5 A until reaching the end discharging voltage 1,7 V and a following charge by charge current 0,5 A and a charge voltage limitation up to 2,5 V, while the cells are recharged by capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle.
The second test stage is performed in 20 hour discharging mode by current 0,25 A until reaching the end discharging voltage 1,7 V and a following charge by charge current 0,5 A and a charge voltage limitation up to 2,5 V, while the cells are recharged by "capacity, 5 % higher than the discharging capacity, indicated during the foregoing cycle.
In this test (figure 2) the cell, which has not been affected by means of low energy modulated magnetic field, reaches 70 % of its capacity after the 80th cycle, which capacity value of 3,08 Ah is considered as the end of the cell useful life. At the same time the cell, which an external impact by means of low energy modulated magnetic field has been implied on, has not reached yet after the 120th cycle a capacity reduction up to 70 %, while after the 120th cycle a discharge capacity of 4,14 Ah for this cell is read, which represent 92 % of the nominal capacity of the experimental lead-acid cell.
Quoted Patent Documents:
- US 6,520,018
- US 7,592,094
- JP 11-312533
- BG 66146

Claims

Claims
1. Method for increasing energy efficiency in the production and the
operation of lead-acid cells and batteries, whereby the lead-acid cells and
batteries with non-formed plates are poured on with electrolyte and
become subject to formation and charging, characterized in that during
a definite timeframe in the formation process of the positive and the
negative plates and / or upon charging the cells and the batteries, they are
affected by means of modulated low energy magnetic field in a frequency
range from Γ10Ηζ to l20Hz.
;i I
2. Method in accordance with claim 1, characterized in that the impact
on the cells and batteries by means of modulated low energy magnetic
field is effected within the last 2 - 4 hours in the process of formation and
/ or charging.
3. Method according to claim 1, characterized in that the impact on the
cells and batteries by means of modulated low energy magnetic field is
effected within the first 1/2 or 1/3 of the time period, necessary for
formation and / or charging.
4. Appliance for creation of low energy modulated magnetic field,
characterized in that it includes a control module with software (1),
comprising mutually connected modulating device (2), a source of
modulated magnetic field (3), a generator or a synthesizer of modulating
sinusoidal signal (4), a digital analogue converter (DAC) (5) and an
amplifier (6), whereby the source of modulated magnetic field (3)
includes at least one solenoid with or without magnetic core. .
PCT/BG2013/000012 2012-11-22 2013-04-02 Method and appliance for increasing energy efficiency in the production and operation of lead-acid cells and batteries WO2014078915A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13724154.3A EP2923408A1 (en) 2012-11-22 2013-04-02 Method and appliance for increasing energy efficiency in the production and operation of lead-acid cells and batteries

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG111349 2012-11-22
BG111349A BG66668B1 (en) 2012-11-22 2012-11-22 Method and device for increasing the energy efficiency in the production and exploitation of lead cells and batteries

Publications (1)

Publication Number Publication Date
WO2014078915A1 true WO2014078915A1 (en) 2014-05-30

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BG (1) BG66668B1 (en)
WO (1) WO2014078915A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016127229A1 (en) * 2015-02-10 2016-08-18 Markov Urii Petrov Method for preparation of positive and negative pastes for lead-acid battery cells and batteries under the influence of a modulated low-energy magnetic field

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107681204B (en) * 2017-09-01 2019-12-06 超威电源有限公司 formation process of battery prepared by using recovered lead powder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11312533A (en) 1998-04-28 1999-11-09 Shin Kobe Electric Mach Co Ltd Manufacture of sealed lead-acid battery
US6520018B1 (en) 2000-11-17 2003-02-18 Enertec Mexico, S.R.L. De C.V. Ultrasonic inspection method for lead-acid battery terminal posts
WO2004070857A2 (en) * 2003-02-03 2004-08-19 Kelly Shawn P Method and related device for improving efficiency and preventing degradation of said energy storage device
BG66146B1 (en) 2007-12-15 2011-07-29 Веселин НАЙДЕНОВ Method for rapid formation and charging of lead-acid batteries

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11312533A (en) 1998-04-28 1999-11-09 Shin Kobe Electric Mach Co Ltd Manufacture of sealed lead-acid battery
US6520018B1 (en) 2000-11-17 2003-02-18 Enertec Mexico, S.R.L. De C.V. Ultrasonic inspection method for lead-acid battery terminal posts
WO2004070857A2 (en) * 2003-02-03 2004-08-19 Kelly Shawn P Method and related device for improving efficiency and preventing degradation of said energy storage device
US7592094B2 (en) 2003-02-03 2009-09-22 Kelly Shawn P Device, system and method for improving efficiency and preventing degradation of energy storage devices
BG66146B1 (en) 2007-12-15 2011-07-29 Веселин НАЙДЕНОВ Method for rapid formation and charging of lead-acid batteries

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016127229A1 (en) * 2015-02-10 2016-08-18 Markov Urii Petrov Method for preparation of positive and negative pastes for lead-acid battery cells and batteries under the influence of a modulated low-energy magnetic field

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EP2923408A1 (en) 2015-09-30
BG66668B1 (en) 2018-05-15
BG111349A (en) 2014-05-30

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