CN206195391U - Circuit is maintained in lead acid battery charge -discharge - Google Patents
Circuit is maintained in lead acid battery charge -discharge Download PDFInfo
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- CN206195391U CN206195391U CN201621197955.1U CN201621197955U CN206195391U CN 206195391 U CN206195391 U CN 206195391U CN 201621197955 U CN201621197955 U CN 201621197955U CN 206195391 U CN206195391 U CN 206195391U
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Abstract
The utility model belongs to the technical field of lead acid battery charges and restores and specifically relates to circuit is maintained in lead acid battery charge -discharge, include: battery BT, its characterized in that: still include voltage stabilizing circuit, 555 multi resonant oscillation circuit, storage battery charging and discharge circuit, pulse restoration control circuit, waveform changing circuit, controlled switch, function switch etc. The utility model discloses but the initial charging current's of manual regulation battery size and frequency are avoided the too big and charge time overlength of the initial charging current of battery and are harmd the battery, can effectively reduce the probability that lead acid battery produced " thermal runaway " and " sulfation ", are favorable to prolonging the life of battery, still can eliminate or alleviate lead acid battery's sulfation, resume the use capacity of battery to a certain extent.
Description
Technical field
The utility model belongs to lead acid battery charge and recovery technique field, specially lead-acid accumulator charge and discharge maintenance
Circuit.
Background technology
In recent years, with the fast development of the industries such as auto industry, electric vehicle, photovoltaic generation, the demand of battery
Increasing, lead-acid accumulator has the advantages that low cost of manufacture, pollutes small, thus is widely used in a variety of applications.General plumbic acid
The battery designs life-span is 5~6 years.But in fact, because operation and maintenance is improper, lead-acid accumulator service life is often up to not
To design period.The principal element for influenceing lead-acid accumulator service life is the regular overcharge of battery or charge less electricity, is led
Lead-acid accumulator electrolyte inside dehydration is caused, and sulfation occurs, cause battery to decline using capacity, battery loses
Due power supply capacity.China is the production of lead-acid accumulator in the world and uses big country, extends the use of lead-acid accumulator
In the life-span, can not only reduce resource consumption and using spending, also help reduction treatment and scrap lead-acid accumulator to ecological environment
The harmful effect for causing.
Electric bicycle on the market typically uses lead-acid accumulator as electrical source of power at present, valve-control sealed using 12V
Lead-acid accumulator is composed in series as single battery and reaches required supply voltage.For example 48V battery of electric bicycle is by 4
12V lead-acid accumulators are in series.After battery of electric bicycle capacity declines, majority is that wherein one battery capacity decline is made
Into many batteries are while problematic probability is little.As long as being repaired to this battery that capacity declines, it becomes possible to recover electricity
The use of dynamic bicycle battery.Because professional capacity of lead acid battery obturator high cost, volume are big, family is not appropriate for
People buys and uses, so after battery is declined using capacity, most users still can directly buy new battery replacement whole
Used batteries.It also can be to be continuing with a period of time that the used batteries replaced in fact have a lot.If having low cost, small volume
The charge and discharge maintenance circuit inside original lead-acid accumulator can be arranged on, be to be capable of achieving to battery by simple rotating switch
" charging " and " reparation ", user is possible to attempt repairing the used batteries that capacity declines, to extend electric bike battery
Service life.The use of current electric bicycle is very universal, electric bicycle recoverable amount it is also very big.Therefore, this reality
There should be preferable market prospects with new.
Utility model content
The utility model is solution above mentioned problem of the prior art, there is provided lead-acid accumulator charge and discharge maintenance circuit,
The lead-acid accumulator charge and discharge maintenance circuit can manually adjust the size and frequency of battery initial charge current, it is to avoid because
Accumulator voltage is too low to cause initial charge current excessive and the charging interval is long and damage battery, while electric power storage can be reduced
The electrolysis and evaporation of pond electrolyte inside reclaimed water, and then generation and the caloric value of internal storage battery bubble are reduced, so as to reduce plumbic acid
Battery produces the probability of " thermal runaway " and " sulfation ", is conducive to extending the service life of battery, can also eliminate or subtract
The sulfation of light lead-acid accumulator, recovers the use capacity of battery to a certain extent.
To achieve these goals, the technical solution adopted in the utility model is as follows：
Lead-acid accumulator charge and discharge maintenance circuit, including battery BT, it is characterised in that：Also include mu balanced circuit, more than 555
Resonance oscillation circuit, first waveform change-over circuit, the second waveform changing circuit, the first controlled switch, the second controlled switch, the first work(
Can change-over switch, the second function switch；The low-voltage output of the mu balanced circuit is powered for 555 multi-resonant oscillating circuits, institute
State input of the 555 multi-resonant oscillating circuit output ends all the way with first waveform change-over circuit to be connected, the first waveform conversion electricity
The output end on road is connected with the control end of the second controlled switch, and second controlled switch is connected to battery BT two ends；It is described
Another road of 555 multi-resonant oscillating circuit output ends is connected with the input of the second function switch, second power and energy
The output end of switch is connected with the input of the second waveform changing circuit, the output end and first of second waveform changing circuit
The control end connection of controlled switch, first controlled switch is connected in the charge circuit that charger is constituted with battery BT；
The first waveform change-over circuit is the second electric capacity C2With the 5th resistance R5The differential circuit of composition, the second waveform conversion electricity
Road is the first electric capacity C1With the 6th resistance R6The differential circuit of composition, first controlled switch is N-channel FET Q1, institute
The second controlled switch is stated for P-channel field-effect transistor (PEFT) pipe Q2；First function switch and the second function switch are double-pole
Double control switch K, first function switch has e ends, d ends, three, f ends binding post, and second power and energy is opened
Close the disconnecting link of total a ends, b ends, three, c ends binding post, the disconnecting link of the first function switch and the second function switch
It is connected, is controlled by same handle.
Manually control double-pole double control switch K directly switches the first function switch, the second function switch,
Change the voltage input levels of lead-acid accumulator charge and discharge maintenance circuit by switching the first function switch, by switching the
Two function switch determine whether the second waveform changing circuit comes into operation, and first waveform change-over circuit, the second waveform turn
The pointed peaky pulse that circuit is responsible for being converted to Square wave pulses alternate positive and negative is changed, then by adjusting 555 multi-resonant oscillating circuits
Output pulse frequency, dutycycle control the first controlled switch, the time of the on or off of the second controlled switch and frequency, most
The purpose for charging or repairing capacity to battery BT with current value, discharge and recharge time and the frequency for matching is reached eventually.
Preferably, the mu balanced circuit is by the 9th resistance R9With voltage-regulator diode DZChuan Lian Group are into the 9th resistance R9One termination
In the positive output end of output circuit for charger, the 9th resistance R9Another termination voltage-regulator diode DZNegative electrode, the voltage-regulator diode
DZAnode be connected on the negative output terminal of output circuit for charger, voltage-regulator diode DZNegative electrode be low-voltage output UCC, it is more than 555
Resonance oscillation circuit is powered.
Mu balanced circuit provides operating voltage for the charge circuit in 555 timers and multi-resonant oscillating circuit.
Preferably, 555 multi-resonant oscillating circuit is by 555 timers, the 7th resistance R7, the 8th resistance R8, the first rectification two
Pole pipe D1, the second commutation diode D2, the first adjustable potentiometer RP1, the second adjustable potentiometer RP2, the 3rd electric capacity C3, the 4th electric capacity
C4Composition, the earth terminal ground connection of 555 timer, the 3rd electric capacity C of control end series connection3After be grounded, threshold value end with triggering input
It is attempted by the first adjustable potentiometer RP1Centre tap, first adjustable potentiometer RP1Centre tap connect the 4th electric capacity C4Afterwards
Ground connection, the first adjustable potentiometer RP1First fixation terminate at the first adjustable potentiometer RP1Centre tap and the 4th electricity
Hold C4Connection circuit, the first adjustable potentiometer RP1The second fixing end and the second adjustable potentiometer RP2Centre tap phase
Even；The second adjustable potentiometer RP2The first fixing end and the first commutation diode D1Anode be connected, first rectification
Diode D1The resistance R of negative electrode string the 8th8It is followed by the discharge end of 555 timers, the second adjustable potentiometer RP2The second fixing end
With the second commutation diode D2Negative electrode be connected, the second commutation diode D2Anode connect the discharge end of 555 timers, institute
State the 7th resistance R of discharge end series connection of 555 timers7It is followed by voltage-regulator diode DZNegative electrode be low-voltage output UCC。
555 timer multi-resonant oscillating circuits are made up of 555 timers and charge and discharge road, wherein charging circuit：Input voltage
UCC-R7-D2-RP2-RP1-C4, discharge circuit：C4-RP1-RP2-D1-R8- 555 timer discharge ends, by above-mentioned charging circuit, put
Circuit is the regulating networks for constituting 555 timer multi-resonant oscillating circuits, so by changing the second adjustable potentiometer RP2Resistance
I.e. adjustable 555 timers of value export the dutycycle of pulse, change the first adjustable potentiometer RP1Resistance be adjustable 555 timing
Device exports the frequency of pulse.
Preferably, the output end of 555 timer is connected the second electric capacity C all the way2It is followed by P-channel field-effect transistor (PEFT) pipe Q2Grid
Pole, the P-channel field-effect transistor (PEFT) pipe Q2Drain electrode connect the negative pole of battery BT, the positive pole of the battery BT is being connected on charger just
Output end, battery BT positive poles and P-channel field-effect transistor (PEFT) pipe Q2Source electrode between string have the 4th resistance R4, P-channel field-effect transistor (PEFT) pipe Q2Source
Pole is connected on the positive output end of charger, the 5th resistance R5It is connected to P-channel field-effect transistor (PEFT) pipe Q2Source electrode and grid, 555 timing
The normally closed switch of another road second function switch of string of device output end is followed by N-channel FET Q1Grid, described
The first electric capacity C of normal open switch series connection of two function switch1It is followed by N-channel FET Q1Grid, N-channel FET
Q1The resistance R of grid string the 6th6After be grounded, the N-channel FET Q1Source electrode connect the negative output terminal of output circuit for charger
After be grounded, N-channel FET Q1Drain electrode connect the negative pole of battery BT.
By switching the second function switch come the waveform changing circuit of switching second, by first waveform change-over circuit, the
Rectangular wave pulse signal is converted to two waveform changing circuits the pointed peaky pulse signal of alternate positive and negative, by the pinnacle of alternate positive and negative
Pulse signal drives N-channel FET Q1With P-channel field-effect transistor (PEFT) pipe Q2On or off such that it is able to control battery
The time of BT charge or discharge and frequency.
Preferably, the charging of output circuit for charger and battery BT compositions is input into after the rectified filtering of low frequency mains supply
In loop, the charger be provided with sample circuit, rectifier filter circuit, optical coupling voltage negative feedback circuit, power module,
High frequency transformer T1；The sample circuit is connected across the positive and negative output end of output circuit for charger, the feedback detection of sample circuit
Output end UfInput with optical coupling voltage negative feedback circuit is connected, the output end warp of the optical coupling voltage negative feedback circuit
Power module is connected to high frequency transformer, and high frequency transformer output end is connected to rectifier filter circuit, the sample circuit
Low-voltage output is connected with one end of the first function switch, and the other end of first function switch is connected to charging
The negative output terminal of device output circuit.
Due to high frequency transformer T1Output voltage waveforms do not directly reach the use requirement of battery BT, thus need through
Can just be charged a battery after the treatment of rectifier filter circuit rectifying and wave-filtering.After the first function switch of artificial switching,
The resistance value of sample circuit changes therewith, and then sample circuit feeds back the magnitude of voltage U of detection outputfAlso can change, this
Time, coupled voltages negative-feedback circuit was according to sampled signal values UfHigh frequency transformer T is controlled by power module1Input voltage,
So as to control high frequency transformer T1Output voltage U0, make battery BT charged or repaired capacity when required matching voltage
Value.
Preferably, the sample circuit is by first resistor R1, second resistance R2, 3rd resistor R3It is sequentially connected in series, wherein
First resistor R1The positive output end for freely terminating at charger, first resistor R1With second resistance R2Public termination optical coupling
The input of voltage negative feedback circuit, second resistance R2With 3rd resistor R3The function switch of common port string first it is normally opened
Switch is followed by the negative output terminal of charger, 3rd resistor R3The negative output terminal for freely terminating charger, the optical coupling voltage
The output end of negative-feedback circuit is connected to high frequency transformer T through power module1Primary side, the optical coupling voltage negative feedback circuit master
Want element for photoelectrical coupler, the power module is built-in with switching transistor.
Sample circuit is mainly as optical coupling voltage negative feedback circuit provides a sampled signal values, the optical coupling voltage
Negative-feedback circuit is primarily served from after sample circuit collection voltages feedback signal and adjusts high frequency transformer T according to sampled signal1
The effect of output voltage, the photoelectrical coupler is played high frequency transformer T1Primary side carries out the work of electrical isolation with sample circuit
With the power module controls high frequency transformer T by the break-make of built-in switch transistor1Input voltage so that can adjust
High frequency transformer T1Output voltage.
Preferably, the rectifier filter circuit is by the 3rd commutation diode D3With the 5th electric capacity C5It is sequentially connected in series,
Wherein the 3rd commutation diode D3Forward direction is serially connected with charger positive output circuit, the 5th electric capacity C5It is connected across output circuit for charger
Positive and negative output end.
The voltage waveform of high frequency transformer output provides the direct current of stabilization after rectifier filter circuit for sample circuit
Voltage, wherein the 3rd commutation diode D3Play one-way commutation effect, the 5th electric capacity C5Play a part of filtering.
In sum, after the utility model employs such scheme, have the advantages that：
(1), charge pulse duty cycle of the present utility model can be adjusted manually, match the average value of initial charge current
The lead acid battery charge of different capabilities, it is to avoid cause initial charge current excessive and damage during lead-acid accumulator brownout
The problem of battery, overcomes the shortcoming that existing charger only matches certain specified vol lead acid battery charge.
(2), the utility model is charged using positive negative pulse stuffing, can reduce the electrolysis and steaming of battery electrolyte inside reclaimed water
Hair, reduces generation and the caloric value of internal storage battery bubble, reduces lead-acid accumulator and produces " thermal runaway " and " sulfation "
Probability, is conducive to extending the service life of battery.Then use periodically high for the lead-acid accumulator of " sulfation "
Burst pulse carries out prosthetic charging, is then negative burst pulse electric discharge after burst pulse charging high, makes micro- charging of generation have little time to be formed
Gassing is also avoided that anode damage simultaneously, can thus smash big lead sulfate crystallization, eliminates or mitigate the sulfuric acid of lead-acid accumulator
Salinization, the lead-acid accumulator that can recover to be reduced by " sulfation " to a certain extent uses capacity.
（3）, the manually adjustable charging pulse frequency of the utility model, the regulation with charge pulse duty cycle of closing so that
The average value of initial charge current meets the requirement of battery charging, and charging pulse frequency can be fully charged rear automatic with battery
Reduce, reduce the average value of charging current, it is to avoid battery is damaged because of overcharge.
Brief description of the drawings
In order to illustrate more clearly of the utility model example or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing wanted needed for description of the prior art does and simply introduces, it is clear that drawings in the following description are only new this practicality
Some examples of type, to those skilled in the art, on the premise of creativeness is not paid, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the utility model lead-acid accumulator charge and discharge maintenance electrical block diagram.
Fig. 2 is the utility model lead-acid accumulator charge and discharge maintenance circuit schematic diagram.
Fig. 3 is positive negative pulse stuffing charge waveforms figure when the utility model does not connect battery.
Fig. 4 is that positive negative pulse stuffing when the utility model does not connect battery repairs charge waveforms figure.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model example, the technical scheme in the utility model embodiment is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole realities
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of the utility model protection.
With reference to Fig. 1, lead-acid accumulator charge and discharge maintenance circuit, including battery BT, it is characterised in that：Also include voltage stabilizing electricity
Road, 555 multi-resonant oscillating circuits, first waveform change-over circuit, the second waveform changing circuit, the first controlled switch, second controlled open
Pass, the first function switch, the second function switch；The low-voltage output of the mu balanced circuit is 555 multi-harmonic-oscillations electricity
Road powers, and input of the 555 multi-resonant oscillating circuit output end all the way with first waveform change-over circuit is connected, the first wave
The output end of shape change-over circuit is connected with the control end of the second controlled switch, and second controlled switch is connected to battery BT two
End；Another road of the 555 multi-resonant oscillating circuit output end is connected with the input of the second function switch, second work(
The output end of energy change-over switch is connected with the input of the second waveform changing circuit, the output end of second waveform changing circuit
Control end with the first controlled switch is connected, and first controlled switch is connected on charger and is returned with the charging of battery BT compositions
Lu Zhong；The first waveform change-over circuit is the second electric capacity C2With the 5th resistance R5The differential circuit of composition, second waveform turns
Circuit is changed for the first electric capacity C1With the 6th resistance R6The differential circuit of composition, first controlled switch is N-channel FET
Q1, second controlled switch is P-channel field-effect transistor (PEFT) pipe Q2；First function switch and the second function switch are
Double-pole double control switch K, first function switch has e ends, d ends, three, f ends binding post, and second function turns
Change switch total a ends, b ends, three, c ends binding post, the disconnecting link of the first function switch and the second function switch
Disconnecting link is connected, and is controlled by same handle.
With reference to Fig. 2, the mu balanced circuit is by the 9th resistance R9With voltage-regulator diode DZChuan Lian Group are into the 9th resistance R9One end
It is connected on the positive output end of output circuit for charger, the 9th resistance R9Another termination voltage-regulator diode DZNegative electrode, the pole of the voltage stabilizing two
Pipe DZAnode be connected on the negative output terminal of output circuit for charger, voltage-regulator diode DZNegative electrode be low-voltage output UCC, it is 555
Multi-resonant oscillating circuit is powered.555 multi-resonant oscillating circuit is by 555 timers, the 7th resistance R7, the 8th resistance R8, the first rectification
Diode D1, the second commutation diode D2, the first adjustable potentiometer RP1, the second adjustable potentiometer RP2, the 3rd electric capacity C3, the 4th electricity
Hold C4Composition, the earth terminal of 555 timer（Pin 1）Ground connection, control end（Pin 5）Connect the 3rd electric capacity C3After be grounded, threshold
Value end（Pin 6）With triggering input（Pin 2）It is attempted by the first adjustable potentiometer RP1Centre tap, first adjustable potential
Device RP1Centre tap connect the 4th electric capacity C4After be grounded, the first adjustable potentiometer RP1First fixation terminate at first can
Adjust potentiometer RP1Centre tap and the 4th electric capacity C4Connection circuit, the first adjustable potentiometer RP1The second fixing end with
Second adjustable potentiometer RP2Centre tap be connected；The second adjustable potentiometer RP2The first fixing end and the first rectification two
Pole pipe D1Anode be connected, the first commutation diode D1The resistance R of negative electrode string the 8th8It is followed by the discharge end of 555 timers
（Pin 7）, the second adjustable potentiometer RP2The second fixing end and the second commutation diode D2Negative electrode be connected, second rectification
Diode D2Anode connect the discharge end of 555 timers（Pin 7）, the discharge end of 555 timer（Pin 7）Connect the 7th
Resistance R7It is followed by voltage-regulator diode DZNegative electrode be low-voltage output UCC.The output end of 555 timer（Pin 3）Go here and there all the way
Join the second electric capacity C2It is followed by P-channel field-effect transistor (PEFT) pipe Q2Grid, the P-channel field-effect transistor (PEFT) pipe Q2Drain electrode connect the negative of battery BT
Pole, the positive pole of the battery BT is connected on the positive output end of charger, battery BT positive poles and P-channel field-effect transistor (PEFT) pipe Q2Source electrode
Between string have the 4th resistance R4, P-channel field-effect transistor (PEFT) pipe Q2Source electrode is connected on the positive output end of charger, the 5th resistance R5And connect
In P-channel field-effect transistor (PEFT) pipe Q2Source electrode and grid, 555 timer output ends（3）Another road go here and there second function switch
Normally closed switch is followed by N-channel FET Q1Grid, the normal open switch of second function switch connects the first electric capacity C1
It is followed by N-channel FET Q1Grid, N-channel FET Q1The resistance R of grid string the 6th6After be grounded, the N-channel
Effect pipe Q1Source electrode connect the negative output terminal of output circuit for charger after be grounded, N-channel FET Q1Drain electrode meet battery BT
Negative pole.It is input into after the rectified filtering of low frequency mains supply in the charge circuit that output circuit for charger is constituted with battery BT,
The charger is provided with sample circuit, rectifier filter circuit, optical coupling voltage negative feedback circuit, power module, high frequency and becomes
Depressor T1；The sample circuit is connected across the positive and negative output end of output circuit for charger, the feedback detection output of sample circuit
UfInput with optical coupling voltage negative feedback circuit is connected, and the output end of the optical coupling voltage negative feedback circuit is through power module
High frequency transformer is connected to, high frequency transformer output end is connected to rectifier filter circuit, and the low pressure of the sample circuit is defeated
Go out end to be connected with one end of the first function switch, the other end of first function switch is connected to charger output
The negative output terminal of circuit.The sample circuit is by first resistor R1, second resistance R2, 3rd resistor R3It is sequentially connected in series, wherein
First resistor R1The positive output end for freely terminating at charger, first resistor R1With second resistance R2Public termination optical coupling
The input of voltage negative feedback circuit, second resistance R2With 3rd resistor R3The function switch of common port string first it is normally opened
Switch is followed by the negative output terminal of charger, 3rd resistor R3The negative output terminal for freely terminating charger, the optical coupling
The output end of voltage negative feedback circuit is connected to high frequency transformer T through power module1Primary side, optical coupling negative voltage feedback electricity
Road main element is photoelectrical coupler, and the power module is built-in with switching transistor.The rectifier filter circuit is by the 3rd
Commutation diode D3With the 5th electric capacity C5It is sequentially connected in series, wherein the 3rd commutation diode D3It is just defeated that forward direction is serially connected with charger
Go out circuit, the 5th electric capacity C5It is connected across the positive and negative output end of output circuit for charger.
In the utility model embodiment, as shown in Fig. 2 the first adjustable potentiometer RP1With the second adjustable potentiometer
RP2Resistance be 50k Ω -100k Ω, the output end of 555 timers（Pin 3）Output frequency is 6-20kHz, and dutycycle is 10%-
95% rectangular wave pulse, the power module is STRG9656.When being charged to battery BT, then by the first function switch
F ends and d terminations are logical, the b ends of the second function switch and c terminations are logical, the at this moment VD U of chargeroAbout
15V, the low-voltage output U of mu balanced circuitCCTo the operating voltage input of 555 timers（Pin 8）, reset terminal（Pin 4）With
And charging circuit：Input voltage UCC-R7-D2-RP2-RP1-C4A high level voltage signal is provided, while 555 timers is defeated
Go out end (pin 3）Outwards output periodic rectangular pulse, because the c ends and b ends of the second function switch have been turned on, therefore is somebody's turn to do
Rectangular pulse signal direct drive N-channel FET Q1Periodically conducting and cut-off.In N-channel FET Q1During conducting
That is the charge circuit conducting of battery BT, DC voltage UoCharged to battery BT at the positive and negative end for being loaded into battery BT.In N
Channel field-effect pipe Q1During cut-off, battery BT two ends cannot get DC voltage Uo, at this moment battery BT two ends can only obtain amplitude
The periodic positive pulse voltages of about 14.2V, at the same time, the periodic rectangular pulse of 555 timers output turns through first waveform
After changing processing of circuit, P-channel field-effect transistor (PEFT) pipe Q is reached2Grid be alternate positive and negative pointed peaky pulse, negative pointed peaky pulse makes Q2Pipe is led
It is logical, the P-channel field-effect transistor (PEFT) pipe Q that now battery BT passes through conducting2With current-limiting resistance R4Electric discharge.When continuing due to negative pointed peaky pulse
Between it is very short, so P-channel field-effect transistor (PEFT) pipe Q2ON time is also very short, result in formation of the negative pulse of battery BT instantaneous discharges.
In P-channel field-effect transistor (PEFT) pipe Q2During transient switching, N-channel FET Q1Still in cut-off state, battery BT is not at this moment being met just
Negative pulse charging waveform as shown in figure 3, now 555 timers output positive pulse largest duty cycle, it can thus be appreciated that regulation 555 determine
When device output pulse duty factor adjust the second adjustable potentiometer RP2Resistance, it is possible to adjust the big of initial charge current
It is small.Because the negative pulse duration discharged is very short, and the positive pulse duration is much larger than the negative pulse duration, so electric power storage
Pond BT is on the whole to charge, it is achieved thereby that the positive negative pulse stuffing of battery charges.
In the utility model embodiment, as shown in Fig. 2 work as repairing the use that battery BT reduces by " sulfation "
During capacity, the f ends of the first function switch and e terminations are led to, a ends of the second function switch and c are terminated when leading to, now
Sample resistance R3It is shorted, the optical coupling negative voltage feedback of charger output weakens, so that VD UoImprove to about
28V, now 555 timer output ends (pin 3）The periodic rectangular pulse of output by the second waveform changing circuit treatment after,
Reach N-channel FET Q1Grid be alternate positive and negative pointed peaky pulse, positive pointed peaky pulse drives N-channel FET Q1Lead
It is logical, other time N-channel FET Q1Cut-off.Because the positive pointed peaky pulse duration is short, therefore N-channel FET Q1Lead
The logical time is also short, so that DC voltage UoThe two ends of battery BT can only be loaded into the short time, such battery BT two ends are with regard to only
The about narrow positive pulse of the amplitude of 25.6V can be obtained.At the same time, 555 timer output end（Pin 3）The periodicity square of output
After shape pulse is processed through first waveform change-over circuit, P-channel field-effect transistor (PEFT) pipe Q is reached2Grid be alternate positive and negative pointed peaky pulse,
Negative pointed peaky pulse makes P-channel field-effect transistor (PEFT) pipe Q2Conducting, the P-channel field-effect transistor (PEFT) pipe Q that now battery BT passes through conducting2With current limliting electricity
Resistance R4Electric discharge.Because the negative pointed peaky pulse duration is very short, so P-channel field-effect transistor (PEFT) pipe Q2ON time is also very short, thus shape
Into the negative pulse of battery BT instantaneous discharges.In P-channel field-effect transistor (PEFT) pipe Q2During transient switching, N-channel FET Q1Still in
It it is the pulse down-time period after cut-off state, negative pulse, as shown in figure 4, the positive pulse duty of 555 timers output in this case
Than maximum, its fine-tuning reduction of positive pulse dutycycle.
This positive negative pulse stuffing charges adjustable with the initial charge current size of capacity obturator, it is to avoid the storage battery being electrically charged
The problem for causing initial charge current excessive when pressing through low, to match the lead-acid accumulator of different rated capacities to initial charge electricity
The requirement of size is flowed, i.e., general requirement is charged with 0.1~0.3 times of electric current of size of battery rating, overcome existing
Have the shortcomings that charger only matches the lead acid battery charge of certain specified vol.In addition, by adjusting square wave oscillation circuit
Frequency is the first adjustable potentiometer R of regulationP1To adjust the frequency of charging pulse, coordinating the regulation of charge pulse duty cycle makes initially
The size of charging current meets the requirements, and charging pulse frequency can make charging current exist with the fully charged rear automatic reduction of battery
Average value in unit interval is reduced, it is to avoid battery overcharge, reduces the machine of battery " thermal runaway " and " sulfation "
Rate.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in utility model
Within protection domain.
Claims (7)
1. lead-acid accumulator charge and discharge maintenance circuit, including battery BT, it is characterised in that：Also include mu balanced circuit, 555 multi resonants
Oscillating circuit, first waveform change-over circuit, the second waveform changing circuit, the first controlled switch, the second controlled switch, the first function
Change-over switch, the second function switch；
The low-voltage output of the mu balanced circuit is powered for 555 multi-resonant oscillating circuits, the 555 multi-resonant oscillating circuit output end one
Road is connected with the input of first waveform change-over circuit, output end and second controlled switch of the first waveform change-over circuit
Control end is connected, and second controlled switch is connected to battery BT two ends；The 555 multi-resonant oscillating circuit output end it is another
Road is connected with the input of the second function switch, and output end and second waveform of second function switch change electricity
The input connection on road, the output end of second waveform changing circuit is connected with the control end of the first controlled switch, and described the
One controlled switch is connected in the charge circuit that charger is constituted with battery BT；
The first waveform change-over circuit is the second electric capacity C2With the 5th resistance R5The differential circuit of composition, second waveform turns
Circuit is changed for the first electric capacity C1With the 6th resistance R6The differential circuit of composition, first controlled switch is N-channel FET
Q1, second controlled switch is P-channel field-effect transistor (PEFT) pipe Q2；
First function switch and the second function switch are double-pole double control switch K, and first power and energy is opened
Total e ends, d ends, three, f ends binding post are closed, second function switch has a ends, b ends, three, c ends terminals
Son, the disconnecting link of the first function switch is connected with the disconnecting link of the second function switch, is controlled by same handle.
2. lead-acid accumulator charge and discharge maintenance circuit according to claim 1, it is characterised in that：The mu balanced circuit is by
Nine resistance R9With voltage-regulator diode DZIt is composed in series, the 9th resistance R9One end is connected on the positive output end of output circuit for charger, the 9th
Resistance R9Another termination voltage-regulator diode DZNegative electrode, the voltage-regulator diode DZAnode be connected on the negative of output circuit for charger
Output end, voltage-regulator diode DZNegative electrode be low-voltage output UCC, it is that 555 multi-resonant oscillating circuits are powered.
3. lead-acid accumulator charge and discharge maintenance circuit according to claim 1, it is characterised in that：555 multi-harmonic-oscillations
Circuit is by 555 timers, the 7th resistance R7, the 8th resistance R8, the first commutation diode D1, the second commutation diode D2, first can
Adjust potentiometer RP1, the second adjustable potentiometer RP2, the 3rd electric capacity C3, the 4th electric capacity C4Composition, the ground connection termination of 555 timer
Ground, the 3rd electric capacity C of control end series connection3After be grounded, threshold value end with triggering input be attempted by the first adjustable potentiometer RP1Centre
Tap, first adjustable potentiometer RP1Centre tap connect the 4th electric capacity C4After be grounded, the first adjustable potentiometer RP1's
First fixation terminates at the first adjustable potentiometer RP1Centre tap and the 4th electric capacity C4Connection circuit, first adjustable electric
Position device RP1The second fixing end and the second adjustable potentiometer RP2Centre tap be connected；The second adjustable potentiometer RP2
One fixing end and the first commutation diode D1Anode be connected, the first commutation diode D1The resistance R of negative electrode string the 8th8Afterwards
Connect the discharge end of 555 timers, the second adjustable potentiometer RP2The second fixing end and the second commutation diode D2Negative electrode be connected,
The second commutation diode D2Anode connect the discharge end of 555 timers, the electricity of discharge end series connection the 7th of 555 timer
Resistance R7It is followed by voltage-regulator diode DZNegative electrode be low-voltage output UCC。
4. lead-acid accumulator charge and discharge maintenance circuit according to claim 3, it is characterised in that：555 timer
Output end is connected the second electric capacity C all the way2It is followed by P-channel field-effect transistor (PEFT) pipe Q2Grid, the P-channel field-effect transistor (PEFT) pipe Q2Drain electrode connect
The negative pole of battery BT, the positive pole of the battery BT is connected on the positive output end of charger, battery BT positive poles and P-channel effect
Should pipe Q2Source electrode between string have the 4th resistance R4, P-channel field-effect transistor (PEFT) pipe Q2Source electrode is connected on the positive output end of charger, described
Five resistance R5It is connected to P-channel field-effect transistor (PEFT) pipe Q2Source electrode and grid, another road of 555 timer output ends is gone here and there the second function and is turned
The normally closed switch for changing switch is followed by N-channel FET Q1Grid, second function switch normal open switch series connection
First electric capacity C1It is followed by N-channel FET Q1Grid, N-channel FET Q1The resistance R of grid string the 6th6After be grounded, institute
State N-channel FET Q1Source electrode connect the negative output terminal of output circuit for charger after be grounded, N-channel FET Q1Drain electrode
Connect the negative pole of battery BT.
5. lead-acid accumulator charge and discharge maintenance circuit according to claim 1, it is characterised in that：Low frequency mains supply is through whole
It is input into after stream filtering in the charge circuit that output circuit for charger is constituted with battery BT, the charger is provided with sampling electricity
Road, rectifier filter circuit, optical coupling voltage negative feedback circuit, power module, high frequency transformer T1；The sample circuit bridging
In the positive and negative output end of output circuit for charger, the feedback detection output U of sample circuitfWith optical coupling negative voltage feedback electricity
The input connection on road, the output end of the optical coupling voltage negative feedback circuit is connected to high frequency transformer, high frequency through power module
Transformer output end is connected to rectifier filter circuit, the low-voltage output of the sample circuit and the first function switch
One end connection, the other end of first function switch is connected to the negative output terminal of output circuit for charger.
6. lead-acid accumulator charge and discharge maintenance circuit according to claim 5, it is characterised in that：The sample circuit is by
One resistance R1, second resistance R2, 3rd resistor R3It is sequentially connected in series, wherein first resistor R1Freely terminate at charger
Positive output end, first resistor R1With second resistance R2Public termination optical coupling voltage negative feedback circuit input, second resistance
R2With 3rd resistor R3The normal open switch of the function switch of common port string first be followed by the negative output terminal of charger, the 3rd electricity
Resistance R3The negative output terminal for freely terminating charger, the output end of the optical coupling voltage negative feedback circuit is connected to through power module
High frequency transformer T1Primary side, the optical coupling voltage negative feedback circuit main element be photoelectrical coupler, in the power module
It is equipped with switching transistor.
7. lead-acid accumulator charge and discharge maintenance circuit according to claim 5, it is characterised in that：The filtering high-frequency rectifier
Circuit is by the 3rd commutation diode D3With the 5th electric capacity C5It is sequentially connected in series, wherein the 3rd commutation diode D3Forward direction is serially connected with
Charger positive output circuit, the 5th electric capacity C5It is connected across the positive and negative output end of output circuit for charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197955.1U CN206195391U (en) | 2016-11-07 | 2016-11-07 | Circuit is maintained in lead acid battery charge -discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197955.1U CN206195391U (en) | 2016-11-07 | 2016-11-07 | Circuit is maintained in lead acid battery charge -discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195391U true CN206195391U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621197955.1U Expired - Fee Related CN206195391U (en) | 2016-11-07 | 2016-11-07 | Circuit is maintained in lead acid battery charge -discharge |
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| Country | Link |
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| CN (1) | CN206195391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147447A (en) * | 2021-03-17 | 2021-07-23 | 北京动力源科技股份有限公司 | Multifunctional vehicle-mounted charging circuit for electric automobile |
| CN109037808B (en) * | 2018-09-03 | 2023-06-20 | 大城绿川（深圳）科技有限公司 | Lead-acid storage battery repairing device for household small-capacity electric vehicle |
-
2016
- 2016-11-07 CN CN201621197955.1U patent/CN206195391U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037808B (en) * | 2018-09-03 | 2023-06-20 | 大城绿川（深圳）科技有限公司 | Lead-acid storage battery repairing device for household small-capacity electric vehicle |
| CN113147447A (en) * | 2021-03-17 | 2021-07-23 | 北京动力源科技股份有限公司 | Multifunctional vehicle-mounted charging circuit for electric automobile |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20181107 |