HU0700673A2 - Method and/or circuit arrangement for fast and deep rechmarging of batteries having adherent or blott electrolyte - Google Patents

Method and/or circuit arrangement for fast and deep rechmarging of batteries having adherent or blott electrolyte Download PDF

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Publication number
HU0700673A2
HU0700673A2 HU0700673A HU0700673A HU0700673A2 HU 0700673 A2 HU0700673 A2 HU 0700673A2 HU 0700673 A HU0700673 A HU 0700673A HU 0700673 A HU0700673 A HU 0700673A HU 0700673 A2 HU0700673 A2 HU 0700673A2
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Hungary
Prior art keywords
battery
charge
charging
pulse
signal
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Application number
HU0700673A
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Hungarian (hu)
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HU0700673D0 (en
Inventor
Tamas Balazs
Original Assignee
Tamas Balazs
Kincses Janos
Horvath Jozsef
Szentivanyi Janos Dr
Mohos Tamas
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Application filed by Tamas Balazs, Kincses Janos, Horvath Jozsef, Szentivanyi Janos Dr, Mohos Tamas filed Critical Tamas Balazs
Priority to HU0700673A priority Critical patent/HU0700673A2/en
Publication of HU0700673D0 publication Critical patent/HU0700673D0/en
Publication of HU0700673A2 publication Critical patent/HU0700673A2/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04Regulation of charging current or voltage
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging

Abstract

The inventive process and connection layout are designed for charging, especially deep- and fast-charging of batteries having adherent or soaked electrolyte on the basis of the Wronski effect. In the process according to the invention, charging of a preliminary tested battery is accomplished by a superposed alternating current that has a magnitude ranging from at least 2.5C to at most 4C. The resonance frequency of the battery is determined through a digital frequency response analysis by applying a white noise current pulse. The waveform of the superposed ac pulses is generated by a Power Factor Control circuitry that charges the resonant circuit of the battery through a power pulse modulator. The core feature of the connection layout according to the invention is that when charging is in progress, the control unit of the main circuitry sets the value of the resonance frequency fo of the battery to be charged with the accuracy of ±2% at every moment, wherein said resonance frequency is defined by a digital frequency response analysing circuitry.

Description

COPIES

Procedure and switching arrangement is bound or upset

CHARGING BATTERIES WITH ELECTRONIC BATTERIES

The present invention relates to a method of charging rechargeable or charged electrolytic batteries, to a method for filling up to a maximum capacity by means of depth and rapid charge, and to a switching arrangement for carrying out the process.

Some of the known solutions are based on monitoring of DC voltage and current (hereinafter referred to as DC voltage and current) as well as temperature limits. Such a solution for recharging batteries is disclosed, for example, in Patent No. 223.696B.

More advanced methods use DC pulse charging to monitor similar limits. Such a solution is described for charging batteries, for example, patent No. 225.573B. Accordingly, when charging the battery, a first charge stage comprising at least one current pulse sequence is used, wherein the frequency of the current pulses is substantially equal to the resonant frequency of the battery to be charged. After the first charge stage, a resting period is carried out into which a discharge section is inserted. After the first relaxation period, a continuous flow stream is followed, followed by a second relaxation section into which a discharge section is again inserted. This cycle is repeated to charge the battery. The resonance frequency is defined as the maximum of the amplitude of the amplitude of the charge current pulse sequence. The peak current current applied to the current pulses is in the 1C-7C charging current range, where "C" is the unit of the current amperage (Ah) of the current battery.

The charging process described in patent 225.573B is based on the fact that the battery charge resonance frequency can be used to multiply the normal charge current without increasing heat generation and damage to the battery, and at the same time to induce intensive internal molecular motion on the battery electrodes that accelerates the charge. chemical transformation and therefore battery charging.

• · ·

As a result of our investigations we concluded that the mentioned molecular motion is not observed and instead the proton exchange takes place, on the other hand - as far as the chemical transformation is concerned - it only refers to the so-called. As a result of the Wronski effect, chemical reduction occurs on the electrodes, i.e. the oxides, acid or alkali anhydrides are returned to the electrolyte compound and thus the weapons are cleared.

A further disadvantage of the solution described in Patent No. 225,573B is that it attempts to determine the resonance frequency and the fill factor of the pulse rectangle experimentally, which is relatively inaccurate. Our tests show that the half-width width of the resonance frequency and the quality factor should be determined with the utmost precision, preferably with a precision of ± 2%, in order for the proton exchange quick charge to be generated and the battery not damaged.

Patent No. 225,573B mentions the rapid charging of Li-ion batteries as a particular advantage. With this procedure, this type of battery cannot be charged due to lithium depletion, so the proton exchange can not be created. It is also to be noted here that chemical transformation does not accelerate the charging of the battery, as rapid charge can only occur due to proton exchange and not to molecular drift.

It is an object of the present invention to provide a method and apparatus that can utilize renewable energy in the form of an exceptionally good electrical energy. Specifically, it is an object of the present invention to provide a safe solution for charging rechargeable or electrolyte batteries and, in parallel, to overcome the disadvantages of the above discussed solution.

The charging method and circuit arrangement of the present invention is based on the discovery that each battery has a unique, characteristic resonance frequency. This can be easily seen, for example, by virtue of its inductance (Ι_β) and the amount of charge (Q = lxt = CxU -> C = lxt / U) of the virtual C v capacity of any battery - due to its geometric arrangement. This inductance and virtual capacity is a vibrating circuit that is copper ···· ···· · · · · · · · J • «· · · · ·

-3circuit can also be perceived as a battery replacement image, as shown in Figure 5.

The resonance frequency of the substitute oscillating circuit can be determined despite the fact that we are facing a very bad Q-factor (quality factor) vibration circuit. If we charge the battery with this battery at this resonance frequency, then theoretically, it converts electricity into zero energy during zero time. However, this conversion time is not zero because of the losses in reality, but is always finite.

The replacement image shows that the battery has serial and parallel self-discharge resistors. Since we are charging supercharged alternating current, displacement should be taken into account, which is highly frequency-dependent and reduces the efficiency of charging at higher frequencies.

The above phenomenon was recognized by ZS Wronski in 1999. The point is that if the charge current exceeds 2.5C, but not greater than 4C, then a proton exchange will occur. Furthermore, in this range, there is no molecular drift known in the DC charge, which causes oxidation and warming. The battery damaging heating does not occur in the case of proton exchange triggered by alternating current charging (hereinafter: AC charge). In addition, we have shown that a proton-exchange rapid charge (ie the Wronski effect) does not occur during 2.5C, while molecular drift is restored above 4C, which can result in a fire and explosion hazard.

As mentioned above, a relatively common battery of 10 Ah and 12 Vos has an apparent capacity of 3000 F, approx. For a 500Hz resonance frequency, U inductance is 1.33 nH. It follows that the resonance frequency of such a battery cannot be determined by conventional resonance measurement methods. Accordingly, in the method of the present invention, the Digital Frequency Response Analysis (DFRA) is used to determine the resonance frequency of the battery to be charged. The DFRA method is a method known per se, details of which can be found, for example, for KS Champlin and K. Bertness authors in INTELEC 2000

-4th of the conference publication 348-355. pages of its publication.

It is also known that during the charging of the battery, the value of the resonance frequency in question is constantly changing, so that it must be continuously monitored to know this frequency with sufficient accuracy.

The objective of carrying out a process for fast and deep charging of batteries containing bound or charged electrolyte to full capacity is achieved by developing a method according to claim 1. The process according to the invention is a preferred example. Versions 2-9. Claims 1 to 3. The object of creating an electronic circuit for performing the filling process of the present invention is achieved by developing a circuit arrangement according to claim 10.

More particularly, the present invention relates to a charging method and a switching arrangement in which the discharged battery is subjected to a pre-pulse energy test to determine the organization of the first charge energy package and the cycle time of the charge depending on the battery charge. This preliminary test to determine whether the pH of the battery electrolyte corresponds to that of the standard, i.e., the value considered as acid density ranges from 1.10 kg / l to 1.28 kg / l. If it is less than the current value, the expected vitality of the battery, i.e. its charge status, is expected to be unsatisfactory or very low. As a result, the maximum number of charge cycles is expected to be low.

In this state, the depth filling step used in the present invention, which modulates the soft charge DC current at the same time as a triangular signal of varying width, and utilizes a mold discharge, can significantly improve. Further, this test also indicates whether the battery can be charged with DC and / or superimposed AC or analog PWM RAMP. Here and hereinafter, the term "PWM RAMP" refers to a triangle in which the slope of both the ascending and the downward edges can be suitably varied, optionally independently.

• · · • · ι

-5The output of a DC current generator is switched on and off via an analog modulator circuit into the rechargeable battery. The time period of the on / off signal is the same as the period frequency length provided by the DFRA circuit, while the pulse fill factor depends on the pulse width defined by the respective half-width width of the Power Factor Control (PFC) described below and the length of the RAMP signal.

The size of the energy package calculated by the control computer depends on the integration of the charge current value. The charging arm can be at least 2.5C and at most 3.5-4C.

In our studies, we have come to the conclusion that after a maximum of eight charge cycles, relying on DFRA always requires a new data correction. The energy value of these pulse packets is summed up by the control processor and then compared to the expected energy storage value of the battery. The test is done by connecting a ohmic load to the battery. The discharge current, equivalent to the respective C value, causes the battery to terminate at idle, the processor measures this voltage value. If the controller finds the measured value low, the battery charge will continue. Then, based on a repeated test cycle, the processor checks whether the terminal voltage has not risen further.

At the end of the process, the processor informs the user that the charged battery life will no longer be 100%. Note that such an event does not occur with new batteries.

The invention will now be described in detail with reference to the accompanying drawing, where

Fig. 1 is a schematic illustration of a battery with a bound or charged electrolyte and some steps in the charging process of said battery; the

Figure 2 shows the time course (timing) of the discharging step of said battery charging process; the • · · • · ·

I

Fig. 5-3 shows a preferred version of the current pulse sequence used in the charge charge step of the battery charge process of said battery as a function of elapsed time; the

Figure 4 illustrates the cycle time used in the quick charge step of the battery charging process; the

Figure 5 is a schematic diagram of a replacement battery for charging a battery of the present invention; and the

Figure 6 is an example of an electronic circuit used to perform the charging process of the present invention. block diagram of the embodiment of FIG.

Figure 1 schematically illustrates a battery test and charging process in the form of a block diagram. Figure 1 shows that the filling process of the present invention is carried out in a number of consecutive steps (or states), where the transition between the individual states depends on whether the specified measured parameters of the battery being charged meet the requirements described in detail below. fixed relationships.

The charging process according to the invention takes place through the following states: a state [A] considered as a starting or basic state, a state [B] for performing the discharge test of the battery to be recharged, a state [C] for organizing the charge of the deep charge, state of charge [D] state, [E] state including determination of battery self-frequency (or resonance frequency) by digital frequency response function analysis (DFRA), state [F] for performing battery quick charge; maintenance [G] status, and so-called fast maintenance [H] state and so-called. slow maintenance [I] state. In the following, the operations to be performed in the listed states are described in detail.

Examining the [A] state that U k i> U min relationship is satisfied (here and hereinafter, the U k of the voltage is the voltage measured at the load state, while the U m j n voltage value represents the deep discharge voltage value, where U k terminal voltage drops below this latter voltage value and can only be restored to the detriment of the reduction of the nominal battery Ah value). If yes, then Figure 1 moves to the [B] state on Figure 1, where the battery is illustrated in Figure 2, preferably six, each one.

J • ·

An output signal of (a) with a pulse of 1C filled with 1C amplitude of 1t with a width of -7t = 100 msec is discharged.

Subsequently, the U repeatedly checked out voltage. If the Uki <Umin correlation is met, Figure 1 returns to the [Aj state on 13 counts. If U out> U there min context, Figure 1 is the graph edge 2 [C state to arrange the depth charge. If the depth charge in the [C] state is small in proportion to time, Figure 1 returns to the [Aj (base) state on the 12th gradient. Deep charge is considered to be proportional to the time when the so-called. The difference between the terminal voltage measured at U k U absorption maximum voltage (preferably 14.4 V), and the 1C discharge up to 2.4 volts.

If U out> U min, in Figure 3 the first graph edge of the state [D], wherein in Figure 3 is carried out preparatory charging soft illustrated shaped signal (b) output signals. Here, the pulse charge and the DC charge are alternately applied by inserting shorter DC sections until the DC charge phase is completely eliminated and the pulse charge becomes continuous per period T.

In the [D] state, the gradient of the voltage U k j is measured. If this is increasing - which means that the battery being charged has passed through the initial transient phase (the so-called "drunkenness curve"), Figure 1 on 4 grids will move to the [Ej state.

The [Ej discharged state is preferably a maximum of 10 MHz bandwidth (i.e., at least h = 0.1 msec), and amplitudes 0,1C WIN fehérzajú stream "sounding" the battery virtual resonant circuit, and adjusting the resonance frequency f 0 knowledge of the response function. On the other hand, we obtain information on the quality factor (Q-factor) and half-width of the battery vibration circuit. Based on this half-width width, we set the data needed for servicing the Efficiency Circuit at the output (c) of [Ej Status]. The [Ej state definition of the resonance frequency f 0 is performed by DfrA. After the determination of the resonance frequency f 0, in Figure 5 the first graph edge state [F].

The output of the state [F] (d) preferably eight times, of between eight and up to 3,5cm and 4C, a peak current, and frequency f 0 PFC successively

-8rendelkező töltőimpulzusból and one was prepared consisting of 2 = waveform kisütőimpulzusból 1C amplitude 0.1 msec, in accordance with Figure 4, which is carried out on the completed battery charging intended. Then we examine the Volt, tension again. If U k i <U max , we return to the [E] state on the 6 lines shown in Figure 1. Fast charge cycle used in the state [F] are repeated until the U out> U max relationship is not satisfied, which occur in Figure 1 7 graph edge of the [G] mode, wherein (e) output indicate fast charging sound and by visual complete.

If the self-discharge voltage drop is high, from the [G] state to Figure 1 in the 8th state of rapid maintenance [H], while the self-discharge voltage drop is low, from the [G] state to Figure 1 in the 9th gradient to the slow maintenance [I] state we go on. These two last states are maintained for up to 30 minutes.

FIG. 6 is a schematic block diagram of a preferred exemplary embodiment of an electronic circuitry 100 for performing an electronic circuitry according to the present invention. This circuit arrangement includes an AC (AC) switched switching power supply 101, a switching DC (DC) current generator 102, a power pulse modulator 103, a charging current sensor unit 104, a level control system 104a for a charge current phase, a discharge circuitry 106, a battery charger 107, and a battery charger 107. reference processor, multiprocessor controller 108 central unit, 109 efficiency improvement circuit (PFC), digital frequency response 110 analyzer, programmed frequency generator (synthesizer) 111, status indicator 112 and EPROM control 112a, and intelligent function display 113 and associated light emitting diode (LED) 114 connected thereto a display or a voice control and end position signal 113a and a speaker 113b connected to the latter. As shown in FIG. 6, the battery 105 having a positive electrode 105a and a negative electrode 105b is intended to be electrically connected to the switching arrangement 100. The listed components / units are connected to each other through appropriate outputs and inputs not shown in the drawing by means of black connections (black arrows) and (preferably, l / O data bus (s)) data communication links (thick empty arrows).

ι

Hereinafter, the role and operation of the main parts of the circuit arrangement 100 according to the invention will be described in more detail.

In the main circuit of the switching arrangement 100, the switching power generator DC 102 is powered by a switching power supply unit 101 coupled to the AC network via an electrical connection 121 interconnecting them. The output of the current generator 102 is connected to the power pulse modulator 103 via an electrical link 122. The output of the modulator 103 is connected to the charging current sensor 104 by means of an electrical connection 123. The output of the charge current sensor 104 is connected to the positive electrode 105a of the battery 105 via an electrical link 124. The negative electrode 105b of the battery 105 is connected to the negative and / or ground point of the circuit 100. The positive electrode 105a of the battery 105 is connected to the discharge circuit 106 via an electrical connection 125, which is also connected to the negative and / or ground point via an electrical connection 129.

The main circuit described above is controlled by the central control unit 108 via a data bus 130 l / O. More specifically, the central unit 108 controls the switching DC 102 current generator, the power pulse modulator 103, and the efficiency enhancement circuit 109, which outputs through the electrical link 127 to the power boost input of the power pulse 103 modulator via the 130 l / O bus. Through the same 130 l / O data bus, the central control unit 108 detects the magnitude of the charge current amplitude at the transmitter output of the charging current sensor unit 104. The 130 l / O data bus considered also reads EPROM 112a and is also connected to the digital frequency response 110 analyzer. The digital frequency response 110 analyzer controls the programmed frequency generator 111 for the period of the next charge pulse packet. The digital frequency response 110 analyzer input detects the vibration circuit on line 124 of battery 105 via line 126. The discharge circuit control input 106 is also connected to the data bus 130 l / O, and the traffic of the 130 l / O bus is controlled by the reference processor 107 of the battery charger. The status of the 130 l / O data bus is displayed on the display 114, the end position of the function display 113 is connected via circuit 128 to the circuitry 113a and signals via the speaker 113b.

• · · ·

- 10The invention is particularly suitable for battery applications where the re-availability of energy does not sustain long-term energy loss. Examples of such applications include uninterruptible power supplies, mobile phones, electric vehicles, emergency power supplies, battery operated power tools, various safety equipment and transport equipment, and various voltage inverters.

A further advantageous feature of the present invention is that the supercharged AC charge lasts approx. Increases 2.5-3 times by reducing the oxides and sulphates on the electrode10 while charging the battery. As a result, fewer batteries will be needed, which can significantly reduce the heavy metal load on the environment: lead acid in acid batteries, while nickel and cadmium in alkaline batteries are heavily polluting the environment.

«· · • · ·

Claims (10)

  1. PATIENT INDIVIDUAL POINTS
    1. A method for charging a battery of a battery with a tied or charged electrolyte at a battery resonance frequency (f 0 ), characterized in that a battery discharge signal (105) with a white noise (WIN) is connected and a battery (105) response signal for digital frequency response analysis. (DFRA) is subjected to an instantaneous resonance frequency (fo) characteristic of a battery (105), and a second charge signal consisting of a superimposed AC pulse sequence at the same frequency as the resonant frequency (f 0 ) thus obtained and a single discharge pulse to the positive electrode (105a) of the battery (105). where a first charge signal is attached to the positive electrode (105a) of the battery (105) prior to switching the second charge signal to the battery (105), the first charging signal being initially pulses and equal to the DC charge time Prepared as GU structured phases, and then gradually reducing the DC charging time length of only finally formed by filling phase pulses signal.
  2. Method according to claim 1, characterized in that the pulses used in the pulse section of the second charge signal are produced in the form of triangular signals ("RAMP signals") with variable slope up and down edges.
  3. The method according to claim 2, characterized in that the slope of the up and down edges is adjusted using an efficiency improving circuit (109).
  4. 4. Referring to 1-3. A method according to any one of claims 1 to 3, characterized in that the length of the phase of the second charge signal formed by the DC charge is gradually reduced in equal steps.
  5. 5. Method according to one of claims 1 to 3, characterized in that the white noise (WIN) current discharge signal is provided with a pulse of 0.1C amplitude and a bandwidth of up to 10 MHz and a ti = 1 msec.
  6. 6. A method according to any one of the preceding claims, characterized in that the pulse sequence of the second charge signal comprises eight peak current pulses between 3.5C and 4C.
  7. 7. A method according to any one of claims 1 to 4, characterized in that the discharge pulse of the second charge signal is t 2 = 1 msec and the amplitude of 1C is · · · · · · · ·
    It is a 12 pulse used to determine the charge of the rechargeable battery (105).
  8. 8. Referring to Figures 1-7. A method according to any one of claims 1 to 3, characterized in that the second charging signal is applied eight times in succession between the second charging signals and the white (WIN) current discharge battery (105).
  9. Method according to claim 8, characterized in that the connection of the first and second charge marks is repeated until the maximum charge of the battery (105) is reached.
  10. 10. A switching arrangement (100) for recharging and recharging a battery (105) having a bound or charged electrolyte, comprising: a switching power supply (101) coupled to an AC network, a switching direct current generator (102), a power pulse modulator (103), a charge current sensor; a unit (104), a discharge circuit (106) and a control circuit, wherein
    - output of power supply unit (101) to DC current generator (102), output of current generator (102) to power pulse modulator (103), output of modulator (103) to charging current sensor unit (104), output of charging current sensor unit (104) to rechargeable battery (105) is connected to the positive electrode (105a) and to the discharge circuit (106) via electrical connections (121, 122, 123, 124, 125), and wherein
    - the control circuit has a battery charger reference processor (107), a central control unit (108), an efficiency improvement circuit (109) and a digital frequency response analyzer (110), and an I / O data port (130) providing a data communication connection
    - the control central unit (108) is connected to the DC current generator (102), the power pulse modulator (103) and the efficiency circuit (109) via the l / O data bus (130), and
    - output of the efficiency improvement circuit (109) via an electrical connection (127) with the efficiency enhancer input of the modulator (103), and via the I / O data bus (130) to the transmitter output of the charging current sensor unit (104) and the digital frequency response analyzer (110) is connected and * ···
    -13r
    - the digital frequency response analyzer (110) is connected to the line (124) of the battery (105) via line (126), and
    - the control input of the discharge circuit (106) is coupled to the I / O data bus (130), and
    - the battery charger reference processor (107) communicates with the central control unit (108) via the l / O data bus (130).
    I
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HU0700673A 2007-11-08 2007-11-08 Method and/or circuit arrangement for fast and deep rechmarging of batteries having adherent or blott electrolyte HU0700673A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HU0700673A HU0700673A2 (en) 2007-11-08 2007-11-08 Method and/or circuit arrangement for fast and deep rechmarging of batteries having adherent or blott electrolyte

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
HU0700673A HU0700673A2 (en) 2007-11-08 2007-11-08 Method and/or circuit arrangement for fast and deep rechmarging of batteries having adherent or blott electrolyte
AT08847965T AT527739T (en) 2007-11-08 2008-11-10 Process and connection layout for the recharging of batteries with hardened or sweeped electrolytics
PCT/HU2008/000131 WO2009060248A2 (en) 2007-11-08 2008-11-10 Process amd connection layout for recharching batteries having adherent or soaked electrolyte
EP20080847965 EP2220743B1 (en) 2007-11-08 2008-11-10 Process amd connection layout for recharching batteries having adherent or soaked electrolyte

Publications (2)

Publication Number Publication Date
HU0700673D0 HU0700673D0 (en) 2007-12-28
HU0700673A2 true HU0700673A2 (en) 2009-05-28

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI1008178A2 (en) 2009-02-09 2016-03-01 Xtreme Power Inc "battery discharge"
WO2019140401A1 (en) * 2018-01-12 2019-07-18 Iontra LLC Apparatus, system and method for dendrite and roughness suppression in electrochemical structures

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811371A1 (en) * 1988-04-05 1989-10-19 Habra Elektronik A method for loading and simultaneous checking the condition of a nickel-cadmium accumulator
US5587924A (en) * 1995-03-31 1996-12-24 Compaq Computer Corporation Automatic system for handling batteries
HU223696B1 (en) * 1999-07-15 2004-12-28 András Fazakas Circuit arrangement and method for charging batteries
CN1531770B (en) * 2001-05-28 2011-02-02 第十充电电子技术费杰斯托斯凯斯克勒米公司 Method and apparatus for charging rechargeable battery with non-liquid electrolyte

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AT527739T (en) 2011-10-15
WO2009060248A2 (en) 2009-05-14
EP2220743A2 (en) 2010-08-25
EP2220743B1 (en) 2011-10-05
HU0700673D0 (en) 2007-12-28
WO2009060248A3 (en) 2009-06-25

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