WO2005083830A1 - Method of removing lead sulfate film of lead acid battery electrode and pulse generator for removing lead sulfate film - Google Patents

Abstract

A method and device for removing a lead sulfate film. The method comprises a film decomposition step of repeatedly giving a first pulsed electric energy negative to battery charging and a second pulsed electric energy positive to battery charging. In a first sub-step, the first and second electric energy is given in the form of pulses at a repetition rate of 8 to 16 kHz, and the second electric energy is given with a delay time shorter than a quarter of the repetition interval after the first electric energy, or given continuously as negative electric energy. In a second sub-step, positive pulsed electric energy is continuously given. The first and second sub-steps are repeated alternately one or more times.

Description

 Specification

 Lead sulfate electrode removal method for lead battery electrode, lead sulfate film removal pulse generator

 The present invention relates to a rejuvenate method, a reconditioning method, a regenerating device, and a reconditioning device for a lead storage battery.

 Background art

 [0002] Lead sulfate (PbS04) film is generated on the electrodes in the electrolyte of a lead battery due to the sulfation phenomenon. This is a problem because it is non-conductive and degrades battery performance. There has been a demand for a method and an apparatus for removing a lead sulfate film. Therefore, there are many lead battery regeneration methods, reconditioning methods, rejuvenators, and reconditioners that apply pulsed electrical energy to the lead sulfate film from the external electrode of the battery to remove it. It has been proposed. Here, the term “regeneration” means that the battery that has become unusable due to the electrode having a high resistance can be reused, and the term “reconditioning” means that the internal resistance of the battery being used is reduced and a higher voltage is applied. This is to extend the service life so that power can be stored and the stored power can be taken in and out for a longer period of time.

[0003] Patent Document 1 regenerates a lead storage battery with a continuous pulse of approximately 8.333 kHz. This gives a positive energy pulse to the charge during charging. This is referred to herein as a "positive" energy norm. Patent Literature 2 induces a discharge in the form of a pulse immediately before the application of a charging voltage (Charge immediately after Discharge). _{0 In} this specification, a pulsed discharge is regarded as a “negative” energy pulse. Therefore, the norse discharge is called a negative energy pulse. More specifically, it is called “negative pulse for battery charging”. Even when the storage battery is discharged without an external energy source, it is also included in the category of “negative” with respect to the storage battery charging. The application of the negative energy is, specifically, to induce a discharge current by setting the load of the storage battery to low impedance.

[0004] Patent Document 3 gives a negative energy pulse immediately after the application of a charging voltage (Discharge immediately after Charge). ₀ Patent Document 4 discloses a 418 microsecond positive It induces an irregular energy pulse followed by an irregular waveform reaching the negative region. Patent Document 5 discloses that immediately after a negative energy pulse, a positive energy pulse larger than the negative energy is applied (Charge after Discharge), and the negative energy pulse is 0.1 C or more in terms of electric quantity. This defines a preferred value of the loose width of 0.0001 to 1 second.

 [0005] Furthermore, the same applicant as that of the present application has filed International Publication WO 2004/030137 A1 and International Publication WO

 2004/030138 A1 discloses a method and apparatus for continuously providing a negative energy pulse of 1 microsecond or less.

 [0006] Focusing on the frequency of a continuous pulse according to the known art, 8.333 kHz (Patent Document 1),

While 20 kHz (Patent Document 4) is preferred, it is described that higher frequencies of 500-700 kHz (Patent Document 6) and 700 kHz- 10,000 MHz (Patent Document 7) are also effective.

 [0007] By the way, regarding the charging process, it is known to change the pulse frequency during charging by a continuous pulse (for example, Patent Document 9 [0002]). Therefore, it is easily recalled that the pulse frequency is changed even in the film removing step. The reason is that the charging process and the film removal process do not need to be performed separately, and this is the power to remove the film during charging. Patent Documents 1-3 also refer to film removal during charging. Therefore, changing the pulse frequency in removing the film is considered to be known. As the frequency changing circuit, a known frequency modulation (FM) circuit or the like may be used.

 [0008] For example, Patent Document 8 [0006] states that "in order to efficiently decompose sulfur, the pulse waveform, wave height, duty ratio (current duration ratio at the maximum amplitude), and charging current value are optimized. It is necessary to set. " Therefore, it is considered that not only the frequency but also the pulse waveform and the pulse height are changed in the film removal.

 [0009] Taken together, continuous pulses have a film removal effect even in a wide range of kHz-MHz-GHz and in any frequency band. It is also known to change the pulse waveform, pulse height, etc. in the film removing step.

[0010] Now, as described above, the known film removal method has a wide variety of options and many choices. There is nothing decisive, though. In other words, one for every situation of lead sulfate coating (It is not possible to remove the film). The reason is that the properties and amount of the lead sulfate film vary depending on the physical conditions of the electrode and the surroundings of the electrode, and the usage conditions of the battery. That is, the design conditions (battery rating and manufacturer) such as the electrode material, electrolyte composition, and battery cell configuration in a lead battery, and the frequency of use, load history, use environment, and especially temperature history of the same battery change. These are all factors that cause a change in the film removing action. For example, rebuilding domestic batteries with U.S.-developed technology does not work even if re-adjustment is attempted, batteries that do not work well with a particular manufacturer's batteries even with good domestic technology, and batteries that are of the same manufacturer do not play well depending on the season, etc. It often happens.

 [0011] From the above viewpoint, the present inventor has found that it is effective for removing a lead sulfate film under specific conditions under a new pulse applying pattern force, and invented a method and an apparatus therefor. Although specific conditions cannot be defined quantitatively, we have found cases in which the conventional energy application pattern is effective for powerful batteries that cannot efficiently remove the film.

 [0012] Patent Document 1: Patent No. 3079212 "Lead storage battery regenerator Z trickle charger" Gregory, Iriami, et al.

 Patent Document 2: U.S. Pat.No. 5,998,968 `` Method and apparatus for rapidly charging and reconditioning a batteryj Ion Control Solutions, LLC

 Patent Document 3: U.S. Pat.No. 4,829,225 `` Rapid battery charger, discharger and reconditioner '' Electronic Power Devices, Corp.

 Patent Document 4: U.S. Pat.No. 5,525,892 `` Pulsed battery rejuvenator having variable trailing edge shaped pulsesj Pulse Charge Systems, Inc.

 Patent Document 5: Japanese Patent Application Laid-Open No. 2000-323188, "Activation method of lead storage battery", J.C. Service Co., Ltd., Toyo System Co., Ltd.

 Patent Document 6: U.S. Pat.No. 6,344,729 `` Method and apparatus for reconditioning and charging a batteryj Tachiang Technology Corp.

 Patent Document 7: U.S. Patent No. 6479966 `` Method and apparatus for reconditioning a batteryj Tacmang Technology Corp.

Patent Document 8: Japanese Patent Application Laid-Open No. 2001-118611, "Method of Regenerating Lead-Acid Battery by Electric Processing" Patent Document 9: Japanese Unexamined Patent Publication No. 6-30530, "Charging method and device for sealed lead-acid battery" Shin-Kobe Electric Co., Ltd.

 Disclosure of the invention

 Problems to be solved by the invention

[0013] The problem to be solved by the present invention is a non-conductive lead sulfate film formed on the electrode in the electrolyte of the lead-acid battery by a sulfation phenomenon, which cannot be effectively removed by the conventional energy applying pattern. It is to remove the force. A method for reconditioning and regenerating a lead battery and a reconditioning / reconditioning device are provided.

 Means for solving the problem

[0014] One method of the present invention (claim 1) is to provide a non-conductive lead sulfate (PbS04) film with a pulsed first electric energy that is negative for storage battery charging and positive for storage battery charging. A lead-free (PbS04) coating to decompose the protruding crystal part of the lead sulfate (PbS04) coating, and a charging process that gives positive electric energy to storage battery charging. In the method for removing the tin sulfate film, the first electric energy is given by a pulse having a repetition period of 8 kHz to 16 kHz, and the second electric energy is supplied for 10 minutes of the repetition time interval of the first electric energy pulse. -The above problem was solved by a method for removing the lead sulfate film, which is applied following the first electric energy pulse with the following time delay.

[0015] Here, the first electric energy is energy that reduces the energy charged to the storage battery in a pulsed manner or discharges the storage battery in a pulsed manner. The second type of electric energy is the one that increases the charging energy in a pulsed manner. By the way, these negative Z positive energies can be provided by adding Z subtraction to the energy of the charger. Specifically, a negative Z positive energy source may be connected as a parallel circuit to the output of the charger.

[0016] Since the negative Z positive energies are not contradictory and can be superposed (claim 2), the film decomposition step and the charging step may be performed simultaneously. In that case, the second electric energy is added to the charging energy of the charger, and the first electric energy is subtracted. Of course, the film decomposition process and the charging process are performed alternately May be. On the other hand, the absolute value of the pulse height of the first electric energy (Claim 3) is preferably not more than one-tenth of the absolute value of the pulse height of the second electric energy because the removal effect is high.

 FIG. 1 is an explanatory diagram of electric energy pulses in the lead sulfate film removing method of the present invention. Horizontal axis

 The (abbreviated in the figure) is time, and the vertical axis (abbreviated in the figure) is an energy relative coordinate whose upper part is positive. “P1” is the pulse height of the first electric energy, and “P2” is the pulse height of the second electric energy. Preferably, P1 is less than one tenth of P2. “Tl” is the repetition time interval of the first electric energy pulse. As described in claim 1, when the repetition period is from 8 kHz to 16 kHz, the removal effect is high and suitable, so this is 1/8000 to 16000 of 1 second. “T2” is a time delay of one-fourth or less of the repetition time interval of the first electric energy pulse. This is less than a quarter of the value from 1/8000 to 16000 of a second.

 [0018] In another method (claim 6) of the present invention, the problem can be solved as follows. It is considered that the application of a continuous pulse is effective in removing the lead sulfate film on the lead-acid battery electrode even if the frequency band is wide and frequency band of kHz—MHz—GHz. In addition, frequency, pulse waveform, pulse height, etc. It is also considered to be known to change in the film removing step. However, it has been proposed to combine the negative continuous pulse proposed by the same applicant in WO 2004/030137 A1 and WO 2004/030138 A1 with a known positive continuous pulse. ,. With this new energy application pattern, there is a possibility that the lead sulfate film that could not be removed conventionally can be removed.

[0019] That is, the present invention (Claim 6) discloses that a non-conductive lead sulfate (PbS04) film formed by a sulfation phenomenon on an electrode in an electrolyte of a lead-acid battery has a pulse-shaped electric current negative for battery charging. A film decomposition process that gives positive pulsed electrical energy to energy and battery charging to decompose the protruding crystal part of the lead sulfate (PbS04) film, and a charging process that gives positive electrical energy to battery charging In the method for removing a lead sulfate film comprising: a first sub-step of continuously applying negative pulsed electric energy and a second sub-step of continuously applying positive pulsed electric energy The first sub-step and the second sub-step alternate, at least Is a method for removing the lead sulfate film which is repeated one or more times.

 Here, the negative pulse-like electric energy refers to a pulse-like reduction of energy for charging the storage battery or a pulse-like discharge of the storage battery. Positive pulsed electrical energy is a pulsed increase in charge energy. However, these negative Z-positive energies can be provided by adding Z-subtraction to the energy of the charger. Specifically, a negative Z positive energy source should be connected in parallel with the output terminal of the charger.

 [0021] As described above, since the negative Z positive energy is not contradictory and can be superposed (claim 8), the film decomposition step and the charging step may be performed simultaneously. Of course, the film decomposition step and the charging step may be performed alternately.

 [0022] When film decomposition and charging are performed simultaneously, the charging energy of the charger is subtracted in a pulse form in the first sub-step, and the charging energy of the charger is added in a pulse form in the second sub-step. It is. Here, in the first sub-step, either the charging voltage may be reduced in a pulsed manner (voltage waveform is not shown) or the pulsed discharging may be performed by connecting a low impedance load in a pulsed manner.

 On the other hand, the pulse width of the first sub-step pulse (Claim 7) is shown in International Publication WO 2004/030137 A1 and International Publication WO 2004/030138 A1 of the same applicant as the present application. It is effective to continuously apply negative energy pulses of 1 microsecond or less.

[0024] Of course, the continuous pulse may remove the film even in the wide frequency band of kHz-MHz-GHz, and the deviation may occur in the frequency band. May be selectively adopted. Further, the frequency, pulse waveform, pulse height, etc. may be changed in the first and second sub-steps. However, these options cannot be uniquely determined. These nominations are based on the design conditions such as the electrodes of the target lead battery, the physical conditions around the electrodes, and the usage conditions of the battery, i.e., the electrode materials, electrolyte composition, and battery cell configuration in the lead battery (battery rating and manufacturing). Ideally, it should be determined based on the contractor) and the battery usage frequency, load history, usage environment, especially temperature history, but it is not realistic because all conditions cannot be grasped. [0025] Actually, data of the charging voltage and the internal resistance before and after the charging step and before and after the film removing step are collected, and when the charging voltage rise and the internal resistance drop are not large, different frequencies and pulse waveforms are used. In this situation, experience data of a suitable pattern is accumulated in a trial and error manner, such as changing to a pulse height pattern. The same applies to the duration of the first sub-step and the duration of the second sub-step of the present invention.

 [0026] That is, the duration of the first sub-step and the second sub-step is determined by determining the type of the lead-acid battery from which the lead sulfate film is to be removed, the usage history, and the measured internal resistance before the charging step. After the charge or film removal process, record the change in internal resistance and the voltage change before and after the process, and evaluate the quality of the set duration from these records. This evaluation data is accumulated and referred to in the next setting.

 As an additional matter, the charging step and the film decomposition step may be performed separately and alternately. That is, a non-conductive lead sulfate (PbS04) film formed on the electrodes in the electrolyte of the lead-acid battery by the sulfation phenomenon, a pulsed electric energy that is negative for battery charging and a battery-charging. The lead sulfate film consists of a film decomposition process that gives positive pulsed electrical energy to decompose the protruding crystal part of the lead sulfate (PbS04) film, and a charging process that gives positive electrical energy to battery charging The method of removing the film consists of a film decomposition process that continuously applies negative pulsed electric energy and the other film decomposition process that continuously applies positive pulsed electric energy. Even if the decomposition step and the charging step are performed alternately, and one of the film decomposition steps and the other is separated for each charging step, There.

FIG. 4 is an explanatory diagram of electric energy pulses in the lead sulfate film removing method of the present invention. The horizontal axis is time, and the vertical axis is energy relative coordinates applied to the electrodes in the electrolyte of the lead-acid battery, with the upper part being positive and the lower part being negative. “T” is a pulse time interval of negative pulse-like electric energy in the first sub-step, and is preferably 1 microsecond or less (claim 7), but is not limited thereto. “Tn” is a predetermined time during which negative pulse-like electric energy is continuously applied in the first sub-step, and “Τρ” is a predetermined time during which positive pulse-like electric energy is continuously applied in the second sub-step. It is. The invention's effect

 According to the present invention, a lead sulfate film of a strong lead-acid battery electrode that cannot be removed by the conventional energy application pattern is removed. For example, the regeneration and readjustment of a car battery rated at 12V by 50Ah of Nippon Battery, which could not be readjusted using the conventional energy application pattern, can be performed.

 BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 2 shows an embodiment of a configuration of an apparatus for implementing one method (claim 1) of the present invention. Fig. 2 is a circuit block diagram of the pulse voltage generator 1 of the present invention. “2” is an input terminal, and “3” is an output terminal. The lines in FIG. 2 do not necessarily indicate actual electrical wiring. Therefore, the circuit block arrangement in the figure may be different depending on the circuit configuration.

 This circuit is the lead sulfate film removing device of the present invention. That is, (Claim 4) an apparatus for removing a lead sulfate film, comprising at least a repetitive pulse voltage generating circuit, a circuit for adjusting a predetermined voltage ratio to the repetitive pulse voltage, and a predetermined repetition pulse time. A time delay circuit for setting a time delay, connected to the repetitive pulse voltage generating circuit, the voltage ratio adjusting circuit and the time delay circuit, and following the repetitive pulse voltage with a reverse potential of a predetermined voltage ratio and a predetermined time delay; A reverse-potential repetition pulse voltage generating circuit, which is capable of generating a repetition pulse of 8 kHz to 16 kHz and a reverse-potential repetition pulse that follows with a time delay of 1/4 or less of the repetition time interval. This is a noise voltage train generator configured to output continuously.

 With the voltage ratio adjusting circuit of FIG. 2 (claim 5), the voltage peak value of the repetitive pulse is less than one-tenth of the voltage peak value of the reverse potential repetition pulse when the voltage ratio is one-tenth or less. It is desirable that The circuit that generates a negative pulse for storage battery charging may be configured to create a pulse-like low impedance state when viewed from the output. Of course, it may be configured to apply a voltage opposite to the charging.

[0033] The output terminal "3" is connected to the external electrode of the lead battery to be regenerated and readjusted. The input terminal “2” may be connected to an external power supply or may be connected to a charger during charging. However, since the conditions of the internal circuit vary depending on the connection method (usage method), design the circuit appropriately. Is necessary. Also, the energy source of the pulse voltage train generator may be the lead battery energy to be regenerated and readjusted. In this case, the input / output terminal “4” may be connected to the external electrode of the target lead battery as shown in FIG. Also in this case, the conditions of the internal circuit of the circuit block change, so the circuit should be designed appropriately.

[0034] Fig. 5 shows another embodiment (claim 6) of the device configuration for carrying out the present invention. FIG. 5 is a circuit block diagram of the pulse generator for implementing the present invention. The lines in the figure do not necessarily indicate actual electrical wiring. Therefore, the arrangement of the circuit blocks in the drawing may be different depending on the circuit configuration. In Fig. 5, "11" is the circuit block of the pulse generator of the present invention, "12" is the input terminal, "13" is the output terminal, and "15" is the negative pulse-like first electrical energy for storage battery charging. The generation circuit, "16" is a pulsed second electric energy generation circuit that is positive for battery charging, "17" is a generation switching circuit between the first electric energy and the second electric energy, and "18" is This is a circuit for setting the duration of generation between the first electric energy and the second electric energy.

 [0035] The device for implementing the present invention (claim 9) includes at least a pulse-like first electric energy generation circuit "15" that is negative for storage battery charging and a pulse-shaped first electrical energy generation circuit that is positive for storage battery charging. A second electric energy generation circuit “16”, a generation switching circuit “17” between the first electric energy and the second electric energy, and a generation duration of the first electric energy and the second electric energy. Circuit 18 that outputs negative pulse-like electric energy continuously for a predetermined time (Tn) in the first sub-step, and outputs positive pulse-like electric energy in the second sub-step. This is a pulse generator configured to output energy continuously for a predetermined time (Τρ).

The output terminal “13” is connected to an external electrode of a lead battery to be regenerated and readjusted. The input terminal “12” may be connected to an external power supply, or may be connected to a charger during charging. However, it is necessary to design the circuit appropriately because the condition of the internal circuit changes depending on such connection method (usage method). Also, the energy source of the pulse voltage train generator may be the lead battery energy to be regenerated and readjusted. In this case, the input / output terminal “14” may be connected to the external electrode of the target lead battery as shown in FIG. Also in this case, the conditions of the internal circuit of the circuit block change, so the circuit should be designed appropriately. Example

 <Example 1>

 One method of the present invention (Claim 1) In the related pulse voltage train generator, a preferable voltage peak (pulse height of the second electric energy) is small (12V'50Ah class small capacity). It is 1.5-2V for a car battery and 7-8V for a relatively large (24V'400Ah class large capacity) electric forklift battery. Under these conditions, the vehicle of the present invention was mounted on a car or forklift for a period of about one week and charged in a trickle state. Observation of the state of the internal electrodes thereafter revealed that the formation of lead sulfate coating due to the sulfurphenyon phenomenon that had occurred conventionally was suppressed.

 <Example 2>

 Another method of the present invention (Claim 6) In the related pulse generator, the pulse height of the second electric energy is reduced by 1.5 for a small (12V'50Ah class small capacity) car battery. -2 V, a relatively large (24 V, 400 Ah class large capacity) electric forklift battery with 718 V, and the first electric energy with a pulse time width of 1 microsecond. For about one week. When the state of the internal electrodes was observed thereafter, it was found that the occurrence of a lead sulfate film due to the sulfation phenomenon, which had conventionally occurred, was suppressed.

 Brief Description of Drawings

 FIG. 1 is an explanatory view of electric energy in one method of the present invention (claim 1), ie, a lead sulfate film removing method 1 according to the present invention. The horizontal axis is time, and the vertical axis is energy relative coordinates with the upper part being positive.

 FIG. 2 is a circuit block diagram of a pulse voltage train (FIG. 1) generator (claim 5) for implementing one method of the present invention. The lines in the figure do not necessarily indicate actual electrical wiring. Therefore, the circuit block arrangement in the figure may be different depending on the circuit configuration.

 FIG. 3 is an explanatory diagram in a case where a pulse voltage train (FIG. 1) generating apparatus (claim 5) for implementing one method of the present invention uses lead battery energy to be regenerated and readjusted as an energy source.

[Fig. 4] Another method according to the present invention (Claim 6). FIG. 4 is an explanatory diagram of one pulse. The horizontal axis is time, and the vertical axis is energy relative coordinates where the upper part is positive and the lower part is negative.

 FIG. 5 is a circuit block diagram of a pulse voltage train (FIG. 4) generator (claim 9) for implementing another method of the present invention. The lines in the figure do not necessarily indicate actual electrical wiring. Therefore, the circuit block arrangement in the figure may be different depending on the circuit configuration.

FIG. 6 is an explanatory diagram in a case where a pulse voltage train (FIG. 4) generating apparatus (Claim 9) for implementing another method of the present invention uses a lead battery energy to be regenerated and readjusted as an energy source. . Explanation of symbols

1.Circuit block of the noise voltage train generator according to one method of the present invention

2 Input terminal

3 Output terminal

4 Input and output terminals

P1 First electrical energy pulse height

P2 Pulse height of the second electrical energy

tl The repetition time interval of the first electrical energy pulse (from 1/8000 to 1/1600 of a second)

t2 Time delay of 1/4 or less of the repetition time interval of the first electric energy noise

11 Another method of the present invention (Claim 6) Circuit block of pulse voltage train generator concerned

12 Input terminal

 13 Output terminal

 14 Input / output terminal

 15 Pulse-like first electrical energy generation circuit negative for battery charging

16 Pulsed second electrical energy generation circuit positive for battery charging

17 Generation switching circuit for first and second electric energy

 18 Circuit that sets the duration of generation of the first electrical energy and the second electrical energy

t Pulse time interval of negative pulse-like electric energy in the first sub-step Tn Where negative pulse-like electric energy is continuously applied in the first sub-step Fixed time

 Tp The time during which positive pulsed electrical energy is continuously applied in the second sub-step

 Circuit Block for the Negative-pulse Generation First negative-pulse electrical energy generation circuit for storage battery charging

 Circuit Block for the Positive-pulse Generation A pulse-like second electrical energy generation circuit that is active for storage battery charging

 Circuit Block for the Time-Delay Time delay circuit

 Regulating Circuit Voltage ratio adjustment circuit

time time

Claims

The scope of the claims

 [1] Sulfation formed on electrodes in electrolyte of lead-acid battery

 Non-conductive lead sulfate (PbS04) film

 Pulsed first electrical energy negative for battery charging

 Repeated application of positive pulsed second electrical energy to storage battery charging

 A film decomposition step for decomposing the protruding crystal parts of the lead sulfate (PbS04) film,

 Charging process that gives positive electric energy to storage battery charging

 The method for removing the lead sulfate film consisting of

 The first electric energy is given in pulses with a repetition period of 8 kHz to 16 kHz, and the second electric energy is given in the repetition time interval of the first electric energy pulse.

The first electrical energy pulse with a time delay of less than a quarter

 A method for removing a lead sulfate film that is provided following.

[2] Simultaneous film decomposition process and charging process, or

 The film decomposition process and the charging process are performed alternately

 The method for removing a lead sulfate film according to claim 1.

[3] The absolute value of the pulse height of the first electrical energy is

 Less than one tenth of the absolute value of the pulse height of the second electrical energy

 5. The method for removing a lead sulfate film according to claim 1.

[4] An apparatus for removing a lead sulfate film according to claim 1,

 at least,

 Repetitive pulse voltage generation circuit,

 A circuit for adjusting a predetermined voltage ratio to the repetitive pulse voltage,

 A time delay circuit for setting a predetermined time delay with respect to the repetition pulse time, connected to the repetition pulse voltage generation circuit, the voltage ratio adjustment circuit, and the time delay circuit

With a reverse potential of a predetermined voltage ratio and a predetermined time delay with respect to the repetitive pulse voltage Having a following reverse potential repetition pulse voltage generation circuit,

 By these circuits

 A pulse voltage train generating circuit configured to continuously output a repetition pulse of 8 kHz to 16 kHz and a reverse potential repetition pulse that follows with a time delay of one quarter or less of the repetition time interval.

5. The pulse voltage train generating device according to claim 4, wherein the predetermined voltage ratio is one-tenth or less and the voltage peak value of the repetition pulse is one-tenth or less of the voltage peak value of the reverse potential repetition pulse.

 [6] A non-conductive lead sulfate (PbS04) film formed on the electrodes in the electrolyte of the lead-acid battery by the sulfation phenomenon,

 Negative pulsed electrical energy for battery charging

 Giving positive pulsed electrical energy to storage battery charging

 A film decomposition step for decomposing the protruding crystal parts of the lead sulfate (PbS04) film,

 A method for removing a lead sulfate film, which comprises a charging step of giving positive electric energy to storage battery charging,

 The film decomposition process

 The method includes a first sub-step of continuously applying negative pulse-like electric energy and a second sub-step of continuously applying positive pulse-like electric energy, wherein the first sub-step and the second sub-step are alternately performed at least. How to remove lead sulphate film that is repeated one or more times

 [7] The method for removing a lead sulfate film according to claim 6, wherein a pulse time interval of the negative pulse-like electric energy in the first sub-step is 1 microsecond or less.

 [8] The film decomposition step and the charging step are performed simultaneously, or the film decomposition step and the charging step are performed alternately

 7. The method for removing a lead sulfate film according to claim 6.

[9] An apparatus for removing a lead sulfate film according to claim 6 or 7, wherein at least:

A pulse-like first electrical energy generating circuit that is negative for storage battery charging, A pulse-like second electric energy generating circuit that is positive for storage battery charging, a generation switching circuit that switches between the first electric energy and the second electric energy, And a circuit for setting the duration of occurrence.

In the first sub-step, negative pulse-like electric energy is continuously output for a predetermined time (Tn),

A pulse generator configured to continuously output positive noise electric energy for a predetermined time (Τρ) in the second sub-step.

[Figure 1]

 [Figure 2]

Repetition time delay circuit

 Pulse voltage

 Generation circuit Voltage ratio adjustment circuit Reverse polarity repetition pulse voltage generation circuit

Replacement form (Rule 26) 2/4

[Fig. 3]

Repetition time delay circuit

 Pulse voltage

 Generation circuit Voltage ratio adjustment circuit Reverse potential repetition '<< Loss voltage generation circuit

Replacement form (Rule 26)

 Picture

 [s 园]

8MC00 / S00Zdf / X3d 0C8C80 / S00Z OAV

 VIV