CN109037808B - Lead-acid storage battery repairing device for household small-capacity electric vehicle - Google Patents
Lead-acid storage battery repairing device for household small-capacity electric vehicle Download PDFInfo
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- CN109037808B CN109037808B CN201811021564.8A CN201811021564A CN109037808B CN 109037808 B CN109037808 B CN 109037808B CN 201811021564 A CN201811021564 A CN 201811021564A CN 109037808 B CN109037808 B CN 109037808B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a household low-capacity electric vehicle lead-acid storage battery repairing device, which comprises a pulse waveform generating circuit for generating high-frequency resonance pulses for repairing a lead-acid storage battery, wherein the pulse waveform generating circuit is connected between a charger and the lead-acid storage battery and is provided with a first connector connected with the charger and a second connector connected with the lead-acid storage battery; the power supply circuit is used for converting the power supplies at two ends of the charger and the lead-acid storage battery into the power supply circuit for supplying power to the repairing device, and the output interface is used for superposing and outputting the resonant pulse current and the charging current output by the pulse waveform generating circuit to two ends of the lead-acid storage battery. The lead-acid storage battery repairing device for the household small-capacity electric vehicle adopts the output of a charger or the power supply of the lead-acid storage battery, and does not need external energy.
Description
Technical Field
The invention relates to the field of lead-acid battery repair, in particular to a household small-capacity electric vehicle lead-acid battery repair device.
Background
Along with the continuous rapid development of the economy and society, the technology of small-capacity electric vehicles such as electric bicycles gradually goes to mature and practical application, and besides energy conservation, economy and environmental protection, the small-capacity electric vehicles such as electric bicycles have the characteristics of labor and time saving of motor vehicles, meet the consumption characteristics and demands of current consumers, and have huge consumption groups after the development for a few years. The development has been the biggest electric bicycle production and consumption state worldwide in China, annual output and consumption account for more than 90% of the proportion of the total output and consumption in the world, and lead-acid storage batteries are used as main electric energy supply equipment of electric bicycles, so that the advantages of stable performance, low price, strong energy, safety, reliability and the like are achieved, and the development of the electric bicycle industry in China is realized.
In the charging and using process of the lead-acid battery of the electric vehicle, capacity reduction caused by the vulcanization problem is unavoidable, because lead sulfate generated in the discharging process can form coarse crystals which are extremely difficult to decompose and are attached to positive and negative polar plates, and the lead-acid battery cannot be reduced in a normal charging mode. Over time, there is an increasing formation of non-active lead sulphate crystals on the plates, eventually causing complete loss of activity of the plates, which is the greatest cause of ageing of the battery. Meanwhile, the premature capacity is reduced, so that on one hand, the use feeling of a user is poorer and poorer, unnecessary trouble is caused to the user, and on the other hand, the shorter service life also promotes the increase of the capacity of the battery industry, and excessive battery scrapping is caused, so that greater pressure is brought to environmental treatment.
Therefore, the method has the advantages that the method has great effect on repairing the capacity reduction caused by vulcanizing the storage battery of the electric vehicle, and prolonging the service life of the storage battery of the electric vehicle, for example, the method of adopting high-frequency current pulse resonance to solve the problem that the storage battery is aged due to sulfation of the lead-acid storage battery of the electric vehicle is a very popular lead-acid storage battery repairing method, and the effect is very obvious, but at present, the equipment for realizing the repairing method is generally repaired by adopting active equipment, and power supply is needed in the repairing process, so that the repairing process is inconvenient in some cases.
Disclosure of Invention
The invention aims to provide a household small-capacity electric vehicle lead-acid storage battery repairing device without an external power supply, and the repairing is directly carried out by adopting the electric energy of the storage battery in the repairing process of the lead-acid storage battery.
The technical scheme of the invention is as follows: a lead-acid storage battery repairing device of a household small-capacity electric vehicle comprises a pulse waveform generating circuit for generating high-frequency resonance pulses for repairing the lead-acid storage battery, a first connector connected with the charger and a second connector connected with the lead-acid storage battery, wherein the pulse waveform generating circuit is connected between the charger and the lead-acid storage battery; the power supply circuit is used for converting the power supplies at two ends of the charger and the lead-acid storage battery into the power supply circuit for supplying power to the repairing device, and the output interface is used for superposing and outputting the resonant pulse current and the charging current output by the pulse waveform generating circuit to two ends of the lead-acid storage battery.
The lead-acid storage battery repairing device for the household small-capacity electric vehicle adopts the output of a charger or the power supply of the lead-acid storage battery, and does not need external energy.
Further, in the above-mentioned domestic small-capacity electric vehicle lead-acid battery repairing device: the pulse waveform generating circuit comprises a singlechip for generating PWM signals, a switching tube Q1, an energy storage unit, a freewheel diode D1, a freewheel diode D25 and a current limiting resistor R3;
the PWM signal generated by the singlechip is connected with the grid electrode of the switching tube Q1, the drain electrode of the switching tube Q1 is connected with one end of a current-limiting resistor R3 through the energy storage unit, the other end of the current-limiting resistor R3 is connected with the anode of the lead-acid storage battery through a second connector (P2), the freewheeling diode D1 and the freewheeling diode D25 are connected between the drain electrode of the switching tube Q1 and the anode of the lead-acid storage battery, and the anodes of the freewheeling diode D1 and the freewheeling diode D25 are connected with the drain electrode of the switching tube Q1; the source of the switching tube Q1 is grounded.
Further, in the above-mentioned domestic small-capacity electric vehicle lead-acid battery repairing device: the energy storage unit comprises an energy storage inductor L1, an energy storage inductor L2, an energy storage inductor L6, an energy storage inductor L7, an energy storage capacitor C2 and an energy storage power supply C5; the energy storage inductor L1 is connected with the energy storage inductor L2 in series, and the energy storage inductor L6 is connected with the energy storage inductor L7 in series; the common end of the energy storage inductor L1 and the energy storage inductor L2 is connected with the common end of the energy storage inductor L6 and the energy storage inductor L7 and is connected with one end of the energy storage capacitor C2 and one end of the energy storage power supply C5, and the other ends of the energy storage capacitor C2 and the energy storage power supply C5 are grounded; the other ends of the energy storage inductor L2 and the energy storage inductor L7 are connected with the drain electrode of the switching tube Q1, and the other ends of the energy storage inductor L1 and the energy storage inductor L6 are connected with the anode of the lead-acid storage battery through the current limiting resistor R3.
Further, in the above-mentioned domestic small-capacity electric vehicle lead-acid battery repairing device: the pulse waveform generation circuit is characterized by further comprising a waveform shaping control circuit which enables the resonance pulse generated by the pulse waveform generation circuit to have a steep rising edge, wherein the waveform shaping control circuit comprises an amplifier which amplifies a PWM signal output by the singlechip and a six-Schmitt trigger, the output end of the amplifier is connected with the input end of the six-Schmitt trigger, and the output end of the six-Schmitt trigger is connected with the grid electrode of the switching tube Q1.
Further, in the above-mentioned domestic small-capacity electric vehicle lead-acid battery repairing device: the battery charger also comprises a voltage sampling detection circuit for detecting the output voltage of the charger, and the single machine generates a corresponding PWM signal according to the voltage detected by the voltage sampling detection circuit.
Further, in the above-mentioned domestic small-capacity electric vehicle lead-acid battery repairing device: the anti-reverse connection alarm protection circuit is arranged between the + -connection wire in the first connector (P1) connected with the charger and the second connector (P2) connected with the lead-acid storage battery, and comprises a reverse protection circuit and a reverse audible and visual alarm circuit;
the reverse protection circuit comprises a reverse protection diode D8 and a self-recovery fuse F1; the self-recovery fuse F1 is connected between the positive wiring in the second connector (P2) and other circuits to be repaired, the negative electrode of the reverse protection diode D8 is connected with the connection part of the self-recovery fuse F1 and the other circuits to be repaired, and the positive electrode is grounded;
the reverse audible and visual alarm circuit comprises a reverse input protection diode D23, a filter capacitor L8, a current limiting resistor R4 and an audible and visual circuit which are sequentially connected in series, wherein the anode of the reverse input protection diode D23 is connected with a wiring in a second joint (P2);
the acousto-optic circuit comprises a voltage stabilizing diode Z1, a filter capacitor C25, a filter capacitor C8, a buzzer BL1 and a light emitting diode D5 connected with a current limiting resistor R20 in series; the anode of the light-emitting diode D5 and the cathode of the zener diode Z1 are connected with the current-limiting resistor R4.
Further, in the above-mentioned domestic small-capacity electric vehicle lead-acid battery repairing device: the circuit is characterized by further comprising an output pulse suppression circuit, wherein the output pulse suppression circuit is arranged between a first connector (P1) connected with a charger and a second connector (P2) connected with a lead-acid storage battery, and comprises a filter inductor L4 and a filter capacitor C7, the filter inductor L4 is connected in series between the first connector (P1) and the positive wiring of the second connector (P2), and the filter capacitor C7 is connected in parallel at two ends of the first connector (P1) + -line. .
The invention will now be described in detail with reference to the drawings and to specific embodiments.
Drawings
FIG. 1 is a schematic block diagram of a healer according to embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of a prosthetic circuit according to embodiment 1 of the present invention.
Detailed Description
The embodiment provides a household small-sized electric vehicle storage battery repairing device, as shown in fig. 1, a circuit system is composed of a singlechip, a power supply circuit, a voltage sampling detection circuit, a voltage reference circuit, a waveform shaping control circuit, a pulse waveform generation circuit, an output pulse suppression circuit, an inverse connection alarm protection circuit and a voltage indication circuit, when the household small-sized electric vehicle storage battery repairing device is used by a user, the repairing device of the embodiment is connected in series between a charger and an electric vehicle lead-acid storage battery, the output end of the charger is connected with the input end of the repairing device to form a first connector P1, electric energy and charging current are provided for the repairing device through the first connector P1, the input end is processed by the power supply circuit and then is used for supplying power to an internal circuit of the repairing device, the singlechip outputs a proper PWM signal to the waveform shaping control circuit after being calculated according to the storage battery voltage measured by the voltage sampling detection circuit, the waveform shaping control circuit generates high-frequency resonance pulses and is connected with two poles of the lead-acid storage battery through a second connector P2 after being overlapped with the charging current output by the charger, repairing is performed on the lead-acid storage battery through the inverse connection alarm protection circuit, and the state of the input end of the electric vehicle storage battery is connected with the inverse connection alarm protection circuit.
Fig. 1 shows a circuit block diagram of a battery healer of a household small electric vehicle, wherein a first connector P1 connected with a charger is called an input end, a second connector P2 connected with a lead-acid battery is called an output end of the healer, an output pulse suppression circuit is connected to a power supply circuit and a voltage sampling detection circuit, the output pulse suppression circuit is also connected with the output end and a pulse waveform generation circuit, the power supply circuit is connected to a voltage reference circuit, a single chip microcomputer and a voltage indication circuit, the single chip microcomputer is connected with the voltage reference circuit, the voltage indication circuit, the voltage sampling detection circuit and a waveform shaping control circuit, the waveform shaping control circuit is connected to the pulse waveform generation circuit, the pulse waveform generation circuit is connected with the output end and the output pulse suppression circuit, and the reverse alarm circuit is connected to the output end.
The single-chip microcomputer comprises a single-chip microcomputer chip, a reset circuit and a program writing port, the single-chip microcomputer can be subjected to program downloading and upgrading through the program writing port, the power supply circuit supplies power to the single-chip microcomputer after being connected to the input end and is subjected to voltage reduction conversion to be a direct-current working voltage, the voltage sampling detection circuit is connected to the single-chip microcomputer to provide a voltage sampling signal for the single-chip microcomputer, the voltage reference circuit is connected to the single-chip microcomputer to provide a precision reference voltage for the single-chip microcomputer, the single-chip microcomputer generates a PWM signal and is connected to the waveform shaping control circuit, the waveform signal PWM output by the program control after the single-chip microcomputer is calculated is output to the waveform shaping control circuit, the single-chip microcomputer is further connected to the voltage indication circuit, and the voltage value range is displayed through the 10-bit pen-segment type LED nixie tube.
The voltage reference circuit is composed of a serial precise voltage stabilizing chip and a resistor capacitor, and provides precise reference voltage for the singlechip to compare the magnitude of input voltage. The voltage reference circuit is connected to an analog input pin of the singlechip.
The power supply circuit consists of a high-voltage step-down DC/DC conversion circuit and a common step-down DC/DC conversion circuit, wherein the high-voltage step-down DC/DC conversion circuit receives charging direct-current voltage which is filtered by the output pulse suppression circuit from an input end (an output end of a charger), and the charging direct-current voltage is subjected to step-down treatment and then is subjected to step-down voltage stabilizing conversion by the common step-down DC/DC conversion circuit again to output stable direct-current working voltage to each component circuit such as a singlechip and the like so as to supply power.
The voltage indication circuit consists of a display driving chip, a current limiting resistor and a pen-segment type LED nixie tube, wherein the pen-segment type LED nixie tube is an LED tube capable of displaying ten segments of electric levels, the display driving chip adopts a common multi-channel CMOS integrated circuit driving chip, and the current limiting resistor is connected between the LED nixie tube and the driving chip and provides proper current for LED driving display. The input port of the driving chip is connected with the display output port of the singlechip, and the singlechip controls and outputs the display voltage state.
As shown in fig. 1, the waveform input/output control part circuit comprises a voltage sampling detection circuit, a waveform shaping control circuit, a pulse waveform generation circuit, an output pulse suppression circuit, a reverse connection alarm protection circuit, a first connector P1 connected with a charger and a second connector P2 connected with a lead-acid storage battery.
The voltage sampling detection circuit comprises an input filter circuit and a voltage dividing circuit, wherein the input filter circuit comprises a rectifier diode D2 and a filter inductor L3 which are connected in series, the positive electrode of the rectifier diode D2 is connected with a self-recovery fuse F1 of the alarm protection circuit in a reverse connection mode, the negative electrode of the rectifier diode D2 is connected with the filter inductor L3, the other end of the filter inductor L3 is connected with a DC power input electrode, the DC power input electrode is connected to a single chip microcomputer voltage input pin B_VIN after being divided by the voltage dividing circuit, and the voltage dividing circuit comprises two voltage dividing resistors R31 and R25, a filter capacitor C1 and a transient suppression diode D4.
The waveform shaping control circuit consists of a triode amplifying circuit and a six-Schmitt trigger circuit, wherein the triode amplifying circuit consists of an NPN triode Q7 and three resistors R10, R11 and R14, the three resistors are respectively a base current limiting resistor R11, a base current limiting resistor R14 and a collector pull-up resistor R10, the base current limiting resistor R11 is connected with a PWM signal output end of a singlechip and a base electrode of the triode Q7, the base current limiting resistor R14 is connected with the base electrode and an emitter electrode of the triode Q7 in parallel, the collector pull-up resistor R10 is connected with a collector electrode of the triode Q7 and a 12V direct current power supply in positive, the collector electrode of the triode Q7 is used as an inverting output of the triode to be connected with an input of the six-Schmitt trigger U1, the six input and output channels of the Schmitt trigger are respectively connected in parallel to be used as a unit, the output of the Schmitt trigger is connected with a jumper resistor JP1, and the jumper resistor JP1 is connected to a grid electrode of a field effect tube in the pulse waveform generating circuit.
The pulse waveform generation circuit is composed of a MOS tube switching circuit and an inductance-capacitance energy storage flyback pulse circuit, wherein a grid electrode of the MOS tube Q1 is connected with a jumper resistor of the waveform shaping control circuit, the grid electrode and a source electrode are connected with a ground protection resistor in parallel, the source electrode is grounded with 2 current limiting protection resistors, the inductance-capacitance energy storage flyback pulse circuit is composed of four energy storage inductors, two filter capacitors, two freewheel diodes and a power current limiting resistor, the power current limiting resistor is connected with a self-recovery insurance of the reverse connection alarm protection circuit, 2 parallel energy storage inductors are connected below, 2 parallel energy storage inductors are connected with two parallel energy storage inductors in addition, a public end in the middle of the energy storage inductors is connected with two parallel filter capacitors to the ground, the energy storage inductor at the lower end is connected with a field effect tube drain electrode, and the field effect tube drain electrode is simultaneously connected with anodes of the two Schottky diodes.
The output waveform suppression circuit comprises a filter inductor and a filter capacitor, wherein the filter inductor is connected in series between the positive electrode of the input end and the positive electrode of the output end, the filter capacitor is connected in parallel at the positive electrode and the negative electrode of the input end, the input end is the input of the charger, and the output end is connected with the battery pack.
The reverse connection alarm protection circuit comprises a reverse protection circuit and a reverse acousto-optic alarm circuit, wherein the reverse protection circuit consists of a reverse protection diode and a self-recovery fuse, the self-recovery fuse is connected to the positive electrode of the battery input end, the negative electrode of the reverse protection diode is connected with the self-recovery fuse and the pulse waveform generation circuit, the positive electrode is grounded, the reverse acousto-optic alarm circuit comprises a reverse input protection diode, a filter capacitor, a current limiting resistor and an acousto-optic circuit which are sequentially connected in series by the ground, the acousto-optic circuit consists of a voltage stabilizing diode, two filter capacitors, a buzzer and a light emitting diode with a serial current limiting resistor, and one end of the LED is connected with the input positive electrode of the battery pack after the LED is connected in parallel. The reverse input of the reverse audible and visual alarm circuit protects the forward connection of the diode to ground.
When the electric vehicle battery pack repairing device is used by a user, the input end of the repairing device is in butt joint with the output end of the charger, the output end of the repairing device is connected with the charging port of the electric vehicle battery pack, the output end of the charger is connected with the input end of the repairing device to provide electric energy and charging current for the repairing device, the input end of the repairing device is processed by the power supply circuit to supply power for the internal circuit of the repairing device, after the internal circuit is supplied with power, the singlechip is started to initialize and then execute a built-in program, then a PWM pulse waveform control signal with an adjustable duty ratio is output to the waveform shaping control circuit after the voltage is calculated according to the voltage measured by the voltage sampling detection circuit, the waveform shaping control circuit shapes and processes the output waveform and then outputs the output waveform to the pulse waveform generating circuit, the pulse waveform generating circuit is controlled to generate high-frequency resonance pulse and output the high-frequency resonance pulse to the output end to the battery for repairing, the input end of the repairing device is provided with charging current after the output pulse suppressing circuit is output, and the voltage indicating circuit is controlled by the singlechip to output the voltage state, and the alarm protection circuit is reversely connected to provide audible and visual alarm information of the reversely connected to the battery.
As shown in fig. 2, in the present embodiment, the high-frequency resonant pulse signal generator and other control circuits for controlling the high-frequency resonant pulse signal to form a relatively steep rising edge are schematic diagrams of a waveform input/output control circuit, and the waveform input/output control circuit comprises a voltage sampling detection circuit, a waveform shaping control circuit, a pulse waveform generation circuit, an output pulse suppression circuit, a reverse connection alarm protection circuit and an input/output terminal.
The voltage sampling detection circuit comprises an input filter circuit and a voltage dividing circuit, wherein the input filter circuit comprises a rectifier diode D2 and a filter inductor L3 which are connected in series, the positive electrode of the rectifier diode D2 is connected with a self-recovery fuse F1 of the reverse connection alarm protection circuit, the negative electrode of the rectifier diode D2 is connected with the filter inductor L3, the other end of the filter inductor L3 is connected with a DC power supply endpoint, the voltage dividing resistors R31 and R25 and the like form the voltage dividing circuit, the DC power supply endpoint is connected to a single chip microcomputer voltage input pin after being divided by the voltage dividing circuit, the voltage dividing circuit comprises two voltage dividing resistors R31 and R25, a filter capacitor C1 and a transient suppression diode D4, and the voltage dividing circuit is used for converting high voltage input by a battery pack into low voltage identified by a single chip microcomputer AD port. The single chip microcomputer confirms the voltage of the lead-acid storage battery through identifying the voltage, indicates on the voltage indication circuit, and simultaneously generates a PWM signal suitable for repairing the resonance pulse of the lead-acid storage battery of the voltage according to the voltage to control the generation of the high-frequency resonance pulse signal.
The waveform shaping control circuit consists of a triode amplifying circuit and a six-Schmitt trigger circuit, wherein the triode controlling circuit consists of an NPN triode Q7 and three resistors, the three resistors are a base current limiting resistor R11, a base bias resistor R14 and a collector pull-up resistor R10 respectively, the base current limiting resistor R11 is connected with the output of a singlechip and the base, the base bias resistor R14 is connected with the base and the emitter of the triode Q7 in parallel, the collector pull-up resistor R10 is connected with the collector of the triode Q7 and the positive of a 12V direct current power supply, the collector of the triode Q7 is used as the inverting output of the triode and is connected with the input of the six-Schmitt trigger U1, the six input and output channels of the Schmitt trigger U1 are respectively connected in parallel to be used as a unit, the output of the Schmitt trigger U1 is connected with a jumper resistor JP1, the jumper resistor JP1 is connected to the grid electrode of the field effect tube Q11 in the pulse waveform generating circuit, and the triode amplifying circuit realizes the output waveform level conversion and amplification of the singlechip.
The pulse waveform generation circuit is composed of a MOS tube switching circuit and an inductance and capacitance energy storage flyback pulse circuit, wherein a grid electrode of the MOS tube Q1 is connected with a jumper resistor JP1 of the waveform shaping control circuit, the grid electrode and the source electrode are connected with a ground protection resistor R27 in parallel, the source electrode is connected with 2 current limiting protection resistors R1 and R9 in pair, the inductance and capacitance energy storage flyback pulse circuit is composed of four energy storage inductors L1, L6, L2 and L7, two filter capacitors C2 and C5, two freewheeling diodes D1 and D25 and a power current limiting resistor R3, the power current limiting resistor R3 is connected with a self-recovery fuse F1 of the inverse alarm protection circuit, the lower end of the inductance and L6 is connected with 2 parallel energy storage inductors L1 and L6 in parallel, the common end of the middle of the energy storage inductors is connected with two parallel filter capacitors C2 and C3 to the ground, the lower end of the energy storage inductors L2 and L7 are connected with the drain electrode of the field effect tube Q1, the drain electrode of the field effect tube Q1 is simultaneously connected with two parallel schottky diodes D1 and D25, the output of the impulse waveform is not completely controlled by a single chip microcomputer, and the pulse waveform generation circuit is formed by the BOOST circuit.
The output waveform suppression circuit comprises a filter inductor L4 and a filter capacitor C7, wherein the filter inductor L4 is connected in series between the positive electrode of the input end P1 and the positive electrode of the output end P2 of the repairing device, the filter capacitor C7 is connected in parallel with the positive electrode and the negative electrode of the input end P1, the input end P2 is the input of the charger, the output end P2 is connected with the battery pack, and the output waveform suppression circuit is used for forming a filter circuit to eliminate the influence of repairing waveform on the access of the charger.
The reverse connection alarm protection circuit comprises a reverse protection circuit and a reverse acousto-optic alarm circuit, wherein the reverse protection circuit consists of a reverse protection diode D8 and a self-recovery fuse F1, the self-recovery fuse F1 is connected to the positive side of a battery input end P1, the negative side of the reverse protection diode D8 is connected with the self-recovery fuse F1 and a pulse waveform generating circuit, the positive side is grounded, the reverse acousto-optic alarm circuit comprises a reverse input protection diode D23, a filter capacitor L8, a current limiting resistor R4 and an acousto-optic circuit which are sequentially connected in series by the ground, the acousto-optic circuit consists of a voltage stabilizing diode Z1, two filter capacitors C25 and C8, a buzzer BL1 and a light emitting diode D5 of a series current limiting resistor R20, and one end of the parallel connection is connected with the input positive side of the battery pack. The reverse input protection diode D23 of the reverse audible and visual alarm circuit is connected to the ground in the forward direction, the reverse connection alarm protection circuit plays a role after the reverse connection of the output end, if the battery is reversely connected, the reverse connection protection diode D8 is conducted, the current rise is large in a short time, the resistance value is quickly raised to infinity after the self-recovery insurance overcurrent, the later-stage circuit of the repairing device is disconnected, at the moment, the reverse input protection diode D23 is conducted, the current flows through the L8, the voltage and the current are provided for the audible and visual circuit after the R4 is used for limiting the current, the reverse alarm light-emitting diode D5 is conducted, the buzzer BL1 sounds, and the user is reminded of the error connection output through audible and visual alarm, and the connection needs to be replaced immediately.
The working process of the healer of the embodiment is as follows:
according to the lead-acid storage battery repairing device, an input end (a first connector P1) is connected to an output interface of an electric vehicle charger according to the requirements of a specification, the polarity and the reliability of connection are noted, after connection is completed, an output end (a second connector P2) of the repairing device is connected to a charging port of an electric vehicle battery pack, whether the polarity of connection is correct or not is noted, if polarity is wrong, an inverse connection alarm protection circuit can start protection and send out audible and visual alarm information to remind a user to change the polarity, after connection is completed, the charger of the user is connected to a mains supply socket to enter a charging state, and at the moment, charging direct-current electric energy is connected to the output end of the repairing device, namely the battery charging port, through an output pulse suppression circuit of the repairing device to charge the battery pack.
The direct current electric energy of the charger can enter the power supply circuit of the repairing device at the same time, an internal direct current power supply is formed after the voltage reduction conversion of the power supply circuit, electric energy is provided for an internal executive component, a single chip microcomputer circuit and the like, after the single chip microcomputer control circuit is electrified, a reset circuit firstly works to reset the single chip microcomputer, after the single chip microcomputer is reset, the internal FLASH memory is started to execute a pre-written program, firstly, the initialization operation is carried out on internal and external resources, after the initialization operation is completed, an analog input port of the single chip microcomputer always detects a voltage signal from a voltage sampling detection circuit, the voltage signal is calculated to be the actual battery pack voltage after the voltage signal is compared with a voltage reference circuit, and the battery pack voltage can be displayed through a voltage indication circuit and also serves as an input calculation parameter of pulse output of the single chip microcomputer.
The singlechip calculates the input voltage parameters and outputs PWM pulse of a fixed value to a waveform shaping control circuit, then the PWM pulse is subjected to waveform shaping and then is driven to be output to a field effect transistor Q1 of a pulse waveform generating circuit, the Q1 is conducted under the high level control of a pulse control waveform, energy storage inductors L1, L2, L6 and L7 enter an energy storage mode, a battery at an output end is positively discharged through a self-recovery fuse F1, at the moment, a charging pulse with a superimposed negative pulse is generated at the output end, the polarization phenomenon in the charging process of a charger is properly eliminated, the resistance of the battery is enhanced, the magnitude of the maximum negative pulse discharging current is limited by loop resistances such as current resistance R3, R1 and R9, inductance impedance and the like, the capacitance on filter capacitors C2 and C5 cannot be suddenly changed, the energy storage on L2 and L7 is accelerated, after the Q1 is controlled to enter an off state by a front stage, the current cannot be suddenly changed, reverse electromotive force is formed, the positive and reverse electromotive force is released to the battery at the output end of the self-recovery fuse F1 through a follow current diode D1 and D25 loop, the positive resonance frequency is generated, the frequency of the singlechip is controlled by the waveform, and the frequency of the waveform is controlled. The high-frequency resonance pulse of the positive plate of the storage battery has the characteristic of high-voltage and high-pulse current, can generate physical resonance with coarse lead sulfate crystals of the product of the storage battery, participate in complex electrochemical reaction inside the battery, gradually dissolve and reduce the coarse lead sulfate crystals, increase the micro electrochemical reaction area of the positive plate of the lead-acid storage battery, recover and increase the capacity of the storage battery, and prolong the service life of the storage battery.
Claims (7)
1. The utility model provides a domestic small capacity electric motor car lead acid battery restorer, includes the pulse waveform generation circuit that produces the high frequency resonance pulse of restoration lead acid battery, its characterized in that: a first connector (P1) connected with the charger and a second connector (P2) connected with the lead-acid storage battery are arranged between the charger and the lead-acid storage battery; the power supply circuit is used for converting the power supplies at two ends of the charger and the lead-acid storage battery into the power supply circuit for supplying power to the repairing device, and the output interface is used for superposing and outputting the resonant pulse current and the charging current output by the pulse waveform generating circuit to two ends of the lead-acid storage battery.
2. The home small-capacity electric vehicle lead-acid storage battery healer according to claim 1, wherein: the pulse waveform generating circuit comprises a singlechip for generating PWM signals, a switching tube Q1, an energy storage unit, a freewheel diode D1, a freewheel diode D25 and a current limiting resistor R3;
the PWM signal generated by the singlechip is connected with the grid electrode of the switching tube Q1, the drain electrode of the switching tube Q1 is connected with one end of a current-limiting resistor R3 through the energy storage unit, the other end of the current-limiting resistor R3 is connected with the anode of the lead-acid storage battery through a second connector (P2), the freewheeling diode D1 and the freewheeling diode D25 are connected between the drain electrode of the switching tube Q1 and the anode of the lead-acid storage battery, and the anodes of the freewheeling diode D1 and the freewheeling diode D25 are connected with the drain electrode of the switching tube Q1; the source of the switching tube Q1 is grounded.
3. The home small-capacity electric vehicle lead-acid storage battery healer according to claim 2, wherein: the energy storage unit comprises an energy storage inductor L1, an energy storage inductor L2, an energy storage inductor L6, an energy storage inductor L7, an energy storage capacitor C2 and an energy storage power supply C5; the energy storage inductor L1 is connected with the energy storage inductor L2 in series, and the energy storage inductor L6 is connected with the energy storage inductor L7 in series; the common end of the energy storage inductor L1 and the energy storage inductor L2 is connected with the common end of the energy storage inductor L6 and the energy storage inductor L7 and is connected with one end of the energy storage capacitor C2 and one end of the energy storage power supply C5, and the other ends of the energy storage capacitor C2 and the energy storage power supply C5 are grounded; the other ends of the energy storage inductor L2 and the energy storage inductor L7 are connected with the drain electrode of the switching tube Q1, and the other ends of the energy storage inductor L1 and the energy storage inductor L6 are connected with the anode of the lead-acid storage battery through the current limiting resistor R3.
4. The home small-capacity electric vehicle lead-acid storage battery healer according to claim 2, wherein: the pulse waveform generation circuit is characterized by further comprising a waveform shaping control circuit which enables the resonance pulse generated by the pulse waveform generation circuit to have a steep rising edge, wherein the waveform shaping control circuit comprises an amplifier which amplifies a PWM signal output by the singlechip and a six-Schmitt trigger, the output end of the amplifier is connected with the input end of the six-Schmitt trigger, and the output end of the six-Schmitt trigger is connected with the grid electrode of the switching tube Q1.
5. The home small-capacity electric vehicle lead-acid storage battery healer according to claim 2, wherein: the single chip microcomputer generates corresponding PWM signals according to the voltage detected by the voltage sampling detection circuit.
6. The home small-capacity electric vehicle lead-acid battery healer according to any one of claims 1 to 5, wherein: the anti-reverse connection alarm protection circuit is arranged between the + -connection wire in the first connector (P1) connected with the charger and the second connector (P2) connected with the lead-acid storage battery, and comprises a reverse protection circuit and a reverse audible and visual alarm circuit;
the reverse protection circuit comprises a reverse protection diode D8 and a self-recovery fuse F1; the self-recovery fuse F1 is connected between the positive wiring in the second connector (P2) and other circuits to be repaired, the negative electrode of the reverse protection diode D8 is connected with the connection part of the self-recovery fuse F1 and the other circuits to be repaired, and the positive electrode is grounded;
the reverse audible and visual alarm circuit comprises a reverse input protection diode D23, a filter capacitor L8, a current limiting resistor R4 and an audible and visual circuit which are sequentially connected in series, wherein the anode of the reverse input protection diode D23 is connected with a wiring in a second joint (P2);
the acousto-optic circuit comprises a voltage stabilizing diode Z1, a filter capacitor C25, a filter capacitor C8, a buzzer BL1 and a light emitting diode D5 connected with a current limiting resistor R20 in series; the anode of the light-emitting diode D5 and the cathode of the zener diode Z1 are connected with the current-limiting resistor R4.
7. The home small-capacity electric vehicle lead-acid storage battery healer according to claim 6, wherein: the circuit is characterized by further comprising an output pulse suppression circuit, wherein the output pulse suppression circuit is arranged between a first connector (P1) connected with a charger and a second connector (P2) connected with a lead-acid storage battery, and comprises a filter inductor L4 and a filter capacitor C7, the filter inductor L4 is connected in series between the first connector (P1) and the positive wiring of the second connector (P2), and the filter capacitor C7 is connected in parallel at two ends of the first connector (P1) + -line.
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| CN109449509A (en) * | 2018-10-18 | 2019-03-08 | 陈明 | A kind of lead-acid accumulator off-network restorative procedure and instrument for repairing |
| CN109378533A (en) * | 2018-10-18 | 2019-02-22 | 陈明 | A kind of high-capacity lead-acid storage battery instrument for repairing |
| CN110534824B (en) * | 2019-07-22 | 2022-10-21 | 大城绿川（深圳）科技有限公司 | RS485 communication lead-acid storage battery online intelligent maintenance system based on self-adaptive networking |
| CN110797934B (en) * | 2019-10-10 | 2022-06-10 | 华为数字能源技术有限公司 | Monitoring battery fuse circuit and power supply system |
| CN112701745A (en) * | 2020-12-09 | 2021-04-23 | 西安图为电气技术有限公司 | Lithium battery management system and control method thereof |
| CN115528324B (en) * | 2022-10-27 | 2023-04-21 | 北京洲海能环科技有限公司 | Method and device for suppressing ripple waves of online repair of storage battery pack |
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