WO1994027352A1 - Apparatus for charging chemical sources of electrical energy by means of modulated alternating current - Google Patents

Apparatus for charging chemical sources of electrical energy by means of modulated alternating current Download PDF

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Publication number
WO1994027352A1
WO1994027352A1 PCT/SI1994/000008 SI9400008W WO9427352A1 WO 1994027352 A1 WO1994027352 A1 WO 1994027352A1 SI 9400008 W SI9400008 W SI 9400008W WO 9427352 A1 WO9427352 A1 WO 9427352A1
Authority
WO
WIPO (PCT)
Prior art keywords
charging
electrical energy
chemical
current
chemical sources
Prior art date
Application number
PCT/SI1994/000008
Other languages
French (fr)
Inventor
Goran MILUTINOVIC^´
Niko Bajt
Original Assignee
Dr.Nemo, D.O.O.
Ivena, D.O.O.
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 Dr.Nemo, D.O.O., Ivena, D.O.O. filed Critical Dr.Nemo, D.O.O.
Priority to AU68114/94A priority Critical patent/AU6811494A/en
Publication of WO1994027352A1 publication Critical patent/WO1994027352A1/en

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Classifications

    • 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
    • H02J7/00711—Regulation of charging or discharging current or voltage with introduction of pulses during the charging process

Abstract

The present invention relates to an apparatus for charging chemical sources of electrical energy by means of modulated alternating current which enables extremely rapid charging secondary chemical sources of electrical energy-accumulators or recharging primary chemical sources of electrical energy-batteries on the operating temperature of a chemical source. The present invention for charging chemical sources of electrical energy by means of alternating current is based on the application of specifically modulated alternating charging current for every type of a reversible chemical source.

Description

APPARATUS FOR CHARGING CHEMICAL SOURCES OF
ELECTRICAL ENERGY BY MEANS OF MODULATED
ALTERNATING CURRENT
The present invention relates to an apparatus for charging chemical sources of electrical energy by means of modulated alternating current which enables an extremely short time of charging secondary chemical sources of electrical energy - accumulators, or recharging primary chemical sources of electrical energy - batteries. The apparatus according to the invention enables minuating electromotorical power, internal resisters and temperature of chemical sources. The invention belongs to the class H 02J 7/02 of the International Patent Classification. The invention of an apparatus for charging secondary chemical sources of electrical energy, which will considerably reduce the time needed for charging the chemical source itself, solves an important technical problem. The reduction in the charging time by rapidly charging chemical sources presents a complex problem, especially for its side effects such as sudden increase of voltage and temperature or excessive gassing that causes rising pressure in closed chemical sources. All these side effects reduce the real capacity as well as the service life of the battery. The chemical source is rapidly destroyed.
Chemical sources of electrical energy store the energy potentially by the help of chemical energy. All known methods and devices for charging and recharging chemical sources of electrical energy are based on restoring their initial state. Secondary sources of electrical energy are reversible which means that chemical processes opposite to those of discharging take place when transferring the current in the opposite way to that they produce. The restoration of the initial state is accompanied by alteration of internal resistance and electromotorical power. During the process the internal resistance of the chemical source itself will decrease when charging while the electromotorical power will increase.
The existent devices for charging reversible chemical sources of electrical energy are based on charging the sources by means of direct current. While charging the battery, the direction of the current the apparatus for charging produces, is opposite to that the chemical source of electrical energy provides. During the process of charging low internal resistance of the chemical source of electrical energy can cause excessive heating of the chemical link, which presents the main difficulty considering the velocity of charging the chemical source. The overheating of the chemical source makes charging with higher voltage impossible.
Various links and apparatuses are available for rapid charging of chemical sources; they solve the problem of overheating of the source while charging in different ways. There are several apparatuses which enable charging chemical sources by using constant current until the charging voltage is reached, then the battery is completely charged by reducing the current manually or automatically.
There are other devices which charge chemical sources by reducing the initial charging current in proportion to the present formation of the chemical source until the charging voltage is obtained.
Further on, we know devices which charge a chemical source by using constant direct current of definite power as far as the charging voltage, then we proceed with constant voltage together with minimal charging current.
Compound devices could be found that enable measuring different parameters of a chemical source during the process of charging as well as the regulation of charging current and voltage. Such devices solve the above mentioned problem by charging a chemical source with the help of direct current in the form of impulses. Special electronic links regulate the periods between the impulses and the power of direct current in proportion to present temperature of the chemical source itself while charging and to the state of formation of the source.
Such devices enable better monitoring and thus considerably reduce the time needed to fully recharge a chemical source, but they demand specific electronic links which make the device itself much more expensive and unsuitable for selling by retail.
None of the above described devices is an appropriate solution to the technical problem of extremely rapid charging of a chemical source.
The present invention for charging chemical sources of electrical energy by means of modulated altemating current is based on application of specifically modulated alternating charging current for every type of a reversible chemical source.
Figure 1 is a diagram of the output form of modulated current of the preferred embodiment of the present invention.
The present invention comprises a source of altemating current with a minimum frequency 10"2 Hz and with the power appropriate to the power of a chemical source that should be charged. The output current is modulated in proportion to the type and capacity of a chemical source that should be charged. The average value of the positive area of the alternating component of charging current and the average value of the negative area are in the proportion from 2:1 to 10:1, which depends on the capacity of a chemical source and the desired velocity of charging. The average value of the positive area of the altemating component of charging current and the average value of the negative area as well as their relation remain unaltered during one charging cycle. The present invention for charging chemical sources of electrical energy by means of modulated alternating current enables extremely high charging current and consequently very short charging time. The efficiency is high without having any harmful effects on the source of the electrical energy.

Claims

CLAIM
We claim:
An apparatus for charging chemical sources of electrical energy by means of modulated altemating current,
specified by the fact of comprising a source of altemating current with a minimum frequency 10 Hz, which is modulated in proportion to the type and the capacity of a chemical source that should be charged in the way that the average value of the positive area of alternating component of charging current and the average value of the negative area are in the proportion from 2:1 to 10:1 and remain unaltered during the charging cycle.
PCT/SI1994/000008 1993-05-19 1994-05-19 Apparatus for charging chemical sources of electrical energy by means of modulated alternating current WO1994027352A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU68114/94A AU6811494A (en) 1993-05-19 1994-05-19 Apparatus for charging chemical sources of electrical energy by means of modulated alternating current

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI9300264A SI9300264A (en) 1993-05-19 1993-05-19 Device for charging chemical sources of electric energy by modulated alternating current
SIP-9300264 1993-05-19

Publications (1)

Publication Number Publication Date
WO1994027352A1 true WO1994027352A1 (en) 1994-11-24

Family

ID=20431180

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SI1994/000008 WO1994027352A1 (en) 1993-05-19 1994-05-19 Apparatus for charging chemical sources of electrical energy by means of modulated alternating current

Country Status (3)

Country Link
AU (1) AU6811494A (en)
SI (1) SI9300264A (en)
WO (1) WO1994027352A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998031088A2 (en) * 1997-01-07 1998-07-16 Ion Control Solutions L.L.C. Improved method and apparatus for rapidly charging and reconditioning a battery
DE102018114223A1 (en) 2018-06-14 2019-12-19 Volkswagen Aktiengesellschaft loader

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808487A (en) * 1971-05-12 1974-04-30 Co Generale D Electricite Method of charging a storage battery and of detecting the termination of charging
WO1981001488A1 (en) * 1979-11-21 1981-05-28 Bele Invent Ab Apparatus for recharging of batteries by means of pulsating current
US4829225A (en) * 1985-10-23 1989-05-09 Electronic Power Devices, Corp. Rapid battery charger, discharger and conditioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808487A (en) * 1971-05-12 1974-04-30 Co Generale D Electricite Method of charging a storage battery and of detecting the termination of charging
WO1981001488A1 (en) * 1979-11-21 1981-05-28 Bele Invent Ab Apparatus for recharging of batteries by means of pulsating current
US4829225A (en) * 1985-10-23 1989-05-09 Electronic Power Devices, Corp. Rapid battery charger, discharger and conditioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998031088A2 (en) * 1997-01-07 1998-07-16 Ion Control Solutions L.L.C. Improved method and apparatus for rapidly charging and reconditioning a battery
WO1998031088A3 (en) * 1997-01-07 1998-11-12 Ion Control Solutions Llc Improved method and apparatus for rapidly charging and reconditioning a battery
US5998968A (en) * 1997-01-07 1999-12-07 Ion Control Solutions, Llc Method and apparatus for rapidly charging and reconditioning a battery
DE102018114223A1 (en) 2018-06-14 2019-12-19 Volkswagen Aktiengesellschaft loader

Also Published As

Publication number Publication date
AU6811494A (en) 1994-12-12
SI9300264A (en) 1994-12-31

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