CN104821623B - Battery charger - Google Patents
Battery charger Download PDFInfo
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- CN104821623B CN104821623B CN201510217637.0A CN201510217637A CN104821623B CN 104821623 B CN104821623 B CN 104821623B CN 201510217637 A CN201510217637 A CN 201510217637A CN 104821623 B CN104821623 B CN 104821623B
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Abstract
The present invention provides a kind of battery charger, comprising: power module, detection circuit, micro-processor interface circuit, constant pressure and flow circuit and MOS drive circuit, wherein power module is used to carry out the work such as AC-DC conversion to alternating current；Detection circuit is detected for the charged state current to battery, and be will test result and be sent to micro-processor interface circuit；Micro-processor interface circuit controls signal for generation phase according to testing result, and stage control signal is sent to constant pressure and flow circuit；Constant pressure and flow circuit is used to stage control signal being converted to pwm control signal, is charged with controlling MOS drive circuit to battery；MOS drive circuit is used to pwm control signal being converted to driving signal, to drive the charging to the battery.The different charging stages may be implemented using battery charger provided by the invention and correspond to different charging currents, it is ensured that battery will not be overcharged, charge less；And battery can be repaired, to extend the service life of battery.
Description
Technical field
The present invention relates to electronic technology and accumulator charging technology field more particularly to a kind of battery charger.
Background technique
Studies have shown that the charging process of battery influences maximum to the life of storage battery, overcharge will lead to battery just
Plate active material loosely falls off softening, anode plate grid corrosion；Especially when battery seriously overshoots, it is also possible to heat occur
It is out of control equal and be quickly invalidated battery.But if undercharge, it will lead to and form coarse crystal on accumulator plate not
Easily reduction forms sulfation, thus by the service life of serious curtailment battery.
Therefore the service life of battery is heavily dependent on correct charging process, well known currently on the market to store
Battery charger includes: (1) constant current charger, refers to that electric current maintains steady state value in charging process, can using constant current charger
To realize charging rapidly, but easily cause overcharged.(2) constant voltage charger refers to during the charging process, charging voltage
It keeps constant, general control is in equal or generation hydrogen slightly below in battery voltage level, although such charger pole
Overcharge is generated less, still, is but easy to cause undercharge.(3) combination of two kinds of charging modes of constant current constant voltage, i.e. three stages
Tactful charger, first stage are constant-current charges, after battery voltage reaches second stage setting value, are filled into constant voltage and current limiting
Electric stage (i.e. second stage), after battery voltage reaches battery rated value, into phase III (floating charge stage), with micro-
Low current charges to battery.Such charger combines the advantage and disadvantage of constant-current constant-voltage charging, however with simple constant pressure
Charger is the same, there is the shortcomings that undercharge, and the aging in particular with battery is particularly acute.
Summary of the invention
The purpose of the present invention is to provide a kind of battery chargers, charge to solve battery in the prior art
Fill, charge less the problems such as.
The present invention provides a kind of battery chargers, comprising: power module, detection circuit, micro-processor interface circuit, constant pressure and constant
Current circuit and MOS drive circuit, wherein
The power module is used to carry out AC-DC conversion to alternating current, provides work for other each modules of the charger
Voltage and charging voltage and charging current of the offer to battery under the control of the micro-processor interface circuit；
The detection circuit is detected for the charged state current to the battery, and be will test result and be sent to
The micro-processor interface circuit；
The micro-processor interface circuit is used to receive the testing result that the detection circuit is sent, and raw according to the testing result
The constant pressure and flow circuit is sent at stage control signal, and by the stage control signal；
The constant pressure and flow circuit is used to receive the stage control signal that the micro-processor interface circuit is sent, and will be described
Stage control signal is converted to pwm control signal, is charged with controlling the MOS drive circuit to the battery；
The MOS drive circuit is used to the pwm control signal being converted to driving signal, to drive to the battery
Charging.
Further, the charger further includes short-circuit protection circuit, and the short-circuit protection circuit is used to work as the electric power storage
When short circuit occurs for electrolytic battery charger, charging is disconnected immediately.
Further, the charger further includes input/output module, and the input/output module is to be charged for inputting
The type information of battery is also used to export charging relevant information under the control of the micro-processor interface circuit.
Further, the charger further includes battery charge management module, and the battery charge management module is used
In the charging voltage and charging current for providing the power module under the control of the micro-processor interface circuit to the battery
It charges.
Further, the power module includes: DC-DC power source unit, AC-DC power supply unit and Auxiliary Power Units,
Wherein,
The AC-DC power supply unit is used to carry out AC-DC conversion to alternating current, and provides phase for the DC-DC power source unit
Close charging voltage and charging current；
The DC-DC power source unit under the control of the micro-processor interface circuit for providing controllable charging current and charging
Voltage, and it is converted into the charging current and charging voltage for meeting battery charging；
The Auxiliary Power Units are used to provide operating voltage to other each modules of the charger.
Further, the current charged state of the battery specifically includes: the current charging current of the battery is filled
Piezoelectric voltage, environment temperature and the current temperature of the battery.
Beneficial effect using aforementioned present invention technical solution is: can pass through input-output equipment flexible choice or input
The type and charging current of battery to be charged, to realize that the different charging stages correspond to different charging currents, it is ensured that will not
Battery is overcharged, charge less；Simultaneously may be implemented individually to repair battery, specifically, can to battery because
The case where causing battery to damage for super-charge super-discharge, sulphation etc. is repaired, to extend the service life of battery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the battery charger that the embodiment of the present invention one provides；
Fig. 2 is the structural schematic diagram of battery charger provided by Embodiment 2 of the present invention；
Fig. 3 is the structural schematic diagram of constant pressure and flow circuit in Fig. 1 Fig. 2 of the present invention；
Fig. 4 is the structural schematic diagram of micro-processor interface circuit in Fig. 1 Fig. 2 of the present invention；
Fig. 5 is the structural schematic diagram of short-circuit protection circuit in Fig. 2 of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
The embodiment of the present invention one discloses a kind of battery charger, and Fig. 1 is the battery that the embodiment of the present invention one provides
The structural schematic diagram of charger, as shown in Figure 1, the battery charger includes: power module 100, detection circuit 200, Wei Chu
Manage circuit 300, constant pressure and flow circuit 400 and MOS drive circuit 500, wherein the power module 100 is used to carry out alternating current
AC-DC conversion provides operating voltage and in the control of the micro-processor interface circuit 300 for other each modules of the charger
The lower charging voltage and charging current provided to battery；The detection circuit 200 is used for the charging current to the battery
State is detected, and be will test result and be sent to the micro-processor interface circuit 300；The micro-processor interface circuit 300 is for receiving institute
The testing result of the transmission of detection circuit 200 is stated, and signal is controlled according to the testing result generation phase, and the stage is controlled
Signal processed is sent to the constant pressure and flow circuit 400；The constant pressure and flow circuit 400 is for receiving the micro-processor interface circuit 300
The stage control signal sent, and the stage control signal is converted into pwm control signal, it is driven with controlling the MOS
Dynamic circuit 500 charges to the battery；The MOS drive circuit 500 is used to the pwm control signal being converted to drive
Dynamic signal, to drive the charging to the battery.
In embodiments of the present invention, the current charged state of battery can specifically include: the electric power storage charged
The current charging current in pond, charging voltage, environment temperature and the current temperature of the battery.Specifically, the present embodiment passes through
The charged state current to battery of detection circuit 200 detects, and using the specifying information of above-mentioned charged state as detection
As a result it is sent to micro-processor interface circuit 300, so that micro-processor interface circuit 300 can be selected according to the current charged state of the battery
Select the corresponding charging stage, realize and personalized charging is carried out to battery, and avoid battery is caused to overcharge, charge less situations such as
Generation.
Fig. 2 is the structural schematic diagram of battery charger provided by Embodiment 2 of the present invention, as shown in Fig. 2, in this implementation
In example, the battery charger can also include short-circuit protection circuit 600 other than including each module shown in FIG. 1,
In, which is used to disconnect charging immediately when short circuit occurs for battery charger.To prevent because of circuit
Damage and caused by associated loss, and reduce security risk to a certain extent.
Further, which can also include input/output module 700, the input/output module 700
For inputting the type information of battery to be charged, can be also used for exporting charging under the control of the micro-processor interface circuit 300
Relevant information.In the present embodiment, input/output module 700 can be realized using common display screen and keyboard, mouse etc., can also
To be realized using LCD display or LED display etc..Specifically, when needing to charge to battery, it can be by this
Input/output module 700 inputs or selects the type and charging current information of battery to be charged, so that micro process is electric
Road 300 can charge to the battery according to the type and current information of the battery of input, to meet the charging of individual character
Demand；In addition, micro-processor interface circuit 300 can also be shown charging relevant information by input/output module 700, to make
Obtaining user can be with more intuitive understanding charging process；Also, it can also be selected by input module 700 to electric power storage to be charged
Pond is repaired, so as to which to over-discharge, the battery that vulcanization etc. is damaged carries out associated restoration, to extend the use of battery
Service life.
Further, which can also include battery charge management module 800, wherein battery fills
Electric management module 800 is used for the charging voltage and charging current for providing power module 100 under the control of micro-processor interface circuit 300
It charges to the battery.
Further, in the above embodiment of the present invention, power module 100 can also include: AC-DC power supply unit 101,
DC-DC power source unit 102 and Auxiliary Power Units 103, wherein AC-DC power supply unit 101 is used to carry out alternating current-direct current to alternating current to turn
It changes, and provides related charging voltage and charging current for DC-DC power source unit 102；DC-DC power source unit 102 is used in Wei Chu
It manages and provides controllable charging current and charging voltage under the control of circuit 300, and be converted into and meet filling for battery charging
Electric current and charging voltage；Auxiliary Power Units 103 are used to provide operating voltage to other each modules of battery charger.
The working principle for illustrating battery charger provided by the invention below by way of a specific embodiment, in this hair
In bright embodiment, alternating current is converted to the voltage and current signal provided for DC-DC power source unit by AC-DC power supply unit, auxiliary
Power supply unit is each module for power supply of charger, and micro-processor interface circuit judges current accumulator status, and enters the related charging stage,
Charge rate setting is carried out to battery according to the current charging stage, meanwhile, micro-processor interface circuit can also be raw according to above-mentioned setting
It is sent in constant pressure and flow circuit at stage control signal, and by the stage control signal, so that constant pressure and flow circuit is by the rank
Section control signal is converted to corresponding pwm control signal, and sends the pwm control signal to MOS drive circuit, so that MOS drives
The pwm control signal is converted to driving signal by dynamic circuit, to drive MOS drive circuit by the voltage of DC-DC power source unit
Current signal is converted to controllable charging voltage or charging current, and the charging voltage or charging current pass through battery Charge Management
Module charges to battery.
During the charging process, detection circuit can detecte the current charging status information of battery, can specifically include storage
The current charging current of battery, charging voltage, environment temperature and the current temperature information of battery, and the charged state is believed
Breath is sent to micro-processor interface circuit, so that micro-processor interface circuit calculates the charging status information by respective algorithms, and makes
The charge control of next stage.Input/output module can show current status information, including battery voltage, charging electricity
The charging stage of stream, current battery types and charger.And works as battery to connect with charger, be ready for charging
When, it can be configured by type and charging current I of the input/output module to battery.When charger enters charging
After mode, charger carries out pulse charge to battery with the charge rate of 0.7*I, to realize tentatively repairing to battery
It is multiple；After the electricity of battery reaches the first preset value, then enter the trial charging stage, the stage is with the charge rate pair of 0.4*I
Battery charges, to avoid high current impact injury caused by over-discharge battery；When the electricity of battery reaches the
After two preset values, then end is filled in examination, enters constant-current charging phase at this time, which carries out battery using I as charging current fast
Speed charging, until battery voltage is increased to preset constant pressure setting value；Then charger enters constant voltage charging phase, which can
To carry out constant-voltage charge to battery, charging current constantly reduces, and after being reduced to preset current value, then enters analysis rank
Section；In the analysis phase, charger can be 2 minutes with break-off, then pass through micro-processor interface circuit to accumulator electric-quantity according to corresponding
Algorithm is calculated, and determines the state of current battery, if in good condition, is entered repairing phase, is carried out to current battery
Devulcanization makes it be restored to initialization process and (if state is not good, recharging is carried out to battery again, if state is still
It is so not good, then stop charging to the battery, and export the information of battery damage by input/output module)；Repair rank
Then enter the floating charge stage after the completion of section, the floating charge stage carries out low current charge to battery；Then enter dimension after the floating charge stage
The stage is held, electric quantity loss caused by the self discharge of battery long-time is supplemented by the maintenance stage, maintains accumulator electric-quantity full
Full state.During the charging process, if generating short-circuit protection signal because of short circuit caused by various factors, when short-circuit protection circuit is examined
Short-circuit protection signal is measured, then forbids constant pressure and flow circuit to issue pwm control signal, charging is finally stopped, to realize short circuit
Protection.
It can be to be charged by input-output equipment flexible choice or input using battery charger provided by the invention
Battery type and charging current, to realize that the different charging stages correspond to different charging currents, it is ensured that will not be to electric power storage
Pond overcharged, charge less；It may be implemented individually to repair battery simultaneously, specifically, can be to battery because overcharging
The case where over-discharge, sulphation etc. cause battery to damage is repaired, to extend the service life of battery.
Fig. 3 is the structural schematic diagram of constant pressure and flow circuit in Fig. 1 Fig. 2 of the present invention, as shown in figure 3, battery charger
Constant pressure and flow circuit includes constant pressure ring (voltage loop Amp) and constant current ring (current loop Amp), pwm signal hair
Raw device；Wherein constant pressure loop realizes the constant-voltage charge of battery, and constant pressure ring includes resistance R136, R140, R141, R145, R148,
R152, R133, R134, R135, R139, R151, R125, R151, R150, R147, R156, capacitor C87, C58, C73, diode
D13, D81, amplifier N4B, wherein resistance R45 mono- terminates battery voltage VOUTCL, another 6 foot of termination amplifier N4B, resistance
R152 mono- terminates 6 foot of amplifier N4B, and termination a GND, resistance R141 mono- terminates VOUTCL, another termination R140, resistance R140 mono-
R141, termination 6 foot of amplifier N4B are terminated, resistance R136 mono- terminates VOUTCL, termination 6 foot of amplifier N4B, resistance R148 mono-
Isobarically Control value VDEM, termination 5 foot of amplifier N4B are terminated, capacitor C87 mono- terminates 5 foot of amplifier N4B, a termination GND, resistance
R135 mono- terminates 6 foot of amplifier N4B, and termination a R134, resistance R134 mono- terminates R135, termination R133, resistance R133 mono- termination
R134, termination 7 foot of amplifier N4B, resistance R139 mono- terminate 6 foot of amplifier N4B, and a termination C58, capacitor C58 is in parallel with C73,
A wherein termination R139, another 7 foot of termination amplifier N4B, resistance R151 mono- terminate 7 foot of amplifier N4B, a termination GND, resistance
R147 mono- terminates 7 foot of amplifier N4B, termination 9 foot of amplifier N4C, and resistance R125 mono- terminates 1 foot of amplifier N4A, two poles of termination
Pipe D13 anode, resistance R156 mono- terminate R147, a terminating diode D81 anode, and diode D81 anode meets R156, and cathode connects
VCOUTCL, diode D13 anode meet R125, and cathode connects 6 foot of amplifier N4B.Constant current ring realizes the constant-current charge of battery, constant current
Ring includes resistance R157, R150, R143, R153, R106, R121, R132, R109, R105, capacitor C88, C21, C89, C17,
C20, C14, triode Q2, amplifier N4A, amplifier N4C, wherein resistance R157 mono- terminates reference voltage+5REF, a termination amplifier
10 foot of N4C, resistance R150 mono- terminate 10 foot of amplifier N4C, and one terminates C88, mono- terminating resistor R150 of capacitor C88, a termination
GND, capacitor C21 mono- terminate 9 foot of amplifier N4C, and a terminating resistor R143, resistance R143 mono- terminate C21, a termination amplifier N4C 8
Foot, resistance R153 mono- terminate 8 foot of amplifier N4C, and termination a C89, capacitor C89 mono- terminates R153, termination a GND, resistance R132 mono-
3 foot of amplifier N4A, termination 7 foot of amplifier N4B are terminated, resistance R121 mono- terminates 3 foot of amplifier amplifier N4A, a termination C17, electricity
Hold C17 mono- and terminate R121, termination a GND, resistance R106 mono- terminates current constant control voltage VDEM, termination 2 foot of amplifier N4A, electricity
Hold C20 mono- and terminate 2 foot of amplifier N4A, termination a R125, resistance R109 mono- terminates C14, termination 1 foot of amplifier N4A, capacitor C14
One termination R109, termination a GND, resistance R105 mono- terminates reference voltage+5REF, a termination triode Q2 collector, triode
Q2 collector meets R105, and base stage meets R109, and emitter meets GND.PWM signal generator believes Isobarically Control signal, current constant control
Number be changed into can driving power pipe pwm pulse signal, pwm pulse generator includes R146, R138, R137, R144, R155,
Capacitor C85, C20, C86, C22, C26, C83, C31, C30, power supply chip N5, diode D1, wherein diode D1 anode meets N51
Foot, cathode connect 8 foot of N4C, and resistance R146 mono- terminates reference voltage+5REF, a termination N51 foot, and capacitor C85 mono- terminates benchmark electricity
Pressure+5REF, a termination N51 foot, the termination of resistance R144 mono- R137, termination GND, resistance R137 mono- a termination N54 foot, a termination+
Mono- termination+5REF of 5REF, capacitor C31, a termination N54 foot, resistance R138 mono- terminate GND, a termination N56 foot, the one end capacitor C30
GND, a termination N56 foot are met, capacitor C86 mono- terminates N52 foot, and termination a GND, resistance R155 mono- terminates benchmark+5REF, a termination
N515 foot, mono- termination+15VS of capacitor C22, a termination N512 foot, capacitor C26 mono- terminate N52 foot, 3 feet, a termination GND；Micro- place
It manages device and issues Isobarically Control value to VDEM, current constant control value to IDEM, when battery voltage partial pressure value is less than Isobarically Control value electricity
When pressing VDEM, constant pressure ring does not work, and constant current ring works at this time, and constant current ring controls power supply chip N5 and issues PWM control pulse, should
Pwm pulse controls DC-DC MOS work by driving circuit, and AC-DC power supply signal is converted to the electricity for battery charging
Current voltage signal, the voltage and current signal is under battery charging circuit management, to battery with current constant control value IDEM electric current
It charges, until battery voltage partial pressure value reaches Isobarically Control value VDEM；When battery voltage partial pressure value reaches constant pressure control
When value VDEM processed, constant current ring does not work, the work of constant pressure ring, and constant pressure ring controls power supply chip N5 and issues PWM control pulse, the PWM
Pulse controls DC-DC MOS work by driving circuit, and AC-DC power supply signal is converted to the voltage electricity for battery charging
Signal is flowed, the voltage and current signal is under battery charging circuit management, to battery with Isobarically Control value VDEM to battery
Constant-voltage charge is carried out, keeps battery voltage constant, while charger charging current is constantly subtracted with battery optimum-curve for operation
It is small.By changing Isobarically Control value VDEM, current constant control value IDEM can change charger charging voltage, charging current,
To carry out the corresponding charging stage to battery to realize with this.
Fig. 4 is the structural schematic diagram of micro-processor interface circuit in Fig. 1 Fig. 2 of the present invention, as shown in figure 4, micro-processor interface circuit includes: to fill
Electric stage control circuit, key circuit, microprocessor controller PIC16F1826.Wherein charging stage control circuit is for controlling reality
Existing charger each charging stage, microprocessor pass through AD port processing charger information, charging voltage, charging current, radiator
Temperature, battery temp judge the battery charging stage by certain algorithm, and make and be suitble to battery reality at that time
The charging voltage and charging current of situation, charging stage control circuit include resistance R187, capacitor C101, resistance R188, electricity
Hold C102, wherein capacitor C101 mono- terminates constant pressure and flow circuit VDEM, another terminating resistor R187, mono- termination capacitor of resistance R187
C101, termination 9 foot of microprocessor, resistance R188 mono- terminate 16 foot of microprocessor, a termination capacitor C102, the one end capacitor C102
Connecting resistance R188, a termination constant pressure and flow circuit I DEM, microprocessor sending different duty pwm pulse, pwm pulse is by RC
Filtering generates control signal IDEM, VDEM；IDEM, VDEM are that can carry out constant pressure to battery by constant pressure and flow circuit conversion
The PWM of constant-current charge controls pulse, which is changed into the driving signal that can be driven to metal-oxide-semiconductor through overdrive circuit, most
Driving metal-oxide-semiconductor realizes the Charge Management to battery eventually.Key circuit realizes the setting to battery charge parameter, can be by pressing
Key changes battery types and battery charging current, while key can be realized to battery reparation, and key circuit includes,
Key S1A, S2A, S3A, S4A, resistance R205, R207, R210, R211, R190, capacitor C104, wherein resistance R211 mono- is terminated
R210, termination a S4A, resistance R210 mono- terminate S3A, and termination a R207, resistance R207 mono- terminates S2A, a termination R205, resistance
R205 mono- terminates S1A, and a termination+5VS, key S1A mono- terminate 2 foot of microprocessor, and a termination R205, key S2A mono- terminates micro-
2 foot of processor, termination a R207, key S3A mono- terminate 2 foot of microprocessor, and termination a R210, key S4A mono- terminates micro process
2 foot of device, one terminates R211, mono- termination+5VS of resistance R206, termination 2 foot of microprocessor, the termination microprocessor 2 of resistance R190 mono-
Foot, termination a GDN, capacitor C104 mono- terminate 2 foot of microprocessor, and a termination GND, when pressing S1A, S2A, S3A respectively, S4A is pressed
When key, microprocessor port collects different voltages value signal, and each key corresponds to relevant voltage value, when sampling corresponding voltage
When value, then detect that respective keys are pressed.Each key corresponds to corresponding function, after detecting by key pressing, micro process according to
Situation carried out association phase charging or battery repair function to battery at that time.Microprocessor PIC16F1826 passes through external
Boundary's information is acquired, and calculates current battery status by certain algorithm, issues correlation PWM letter according to current state
Number, association phase charging is carried out by controlling charger after stage control circuit conversion, or repair to battery.
Fig. 5 is the structural schematic diagram of short-circuit protection circuit in Fig. 2 of the present invention, as shown in figure 5, short-circuit protection circuit includes:
Mutual inductor T3, diode D30, D31, D32, D33, resistance R84, R174, R176, R160, R175, R169, capacitor C95, C91,
C90, C92, triode Q5, Q6, Q4.Wherein 1 foot of transformer primary, 2 feet are serially connected in DC-DC power source circuit acquisition electric current, and 3 feet connect
Diode D32 cathode, 4 feet connect diode D33 cathode, and diode D30 anode connects T33 foot, and cathode connects R176, diode D32 sun
Pole meets GNDS, and cathode connects T33 foot, and diode D31 anode connects T34 foot, and cathode meets R176, and diode D33 anode connects GNDS, cathode
Connect T34 foot, mono- terminating diode D31 cathode of resistance R84, a termination GNDS, mono- terminating diode D30 cathode of resistance R176, one
R174 is terminated, capacitor C95 mono- terminates GND, and termination a R174, resistance R174 mono- terminates R176, and one terminates triode Q6 emitter,
Triode Q6 emitter meets R174, and base stage meets C91, and collector meets R160, and capacitor C91 mono- terminates triode Q6 base stage, a termination
Triode Q5 base stage, triode Q5 base stage meet C91, and emitter meets R175, and collector connecting resistance R160, resistance R160 mono- termination+
15VS, a termination triode Q6 collector, mono- termination+15VS of capacitor C90, a termination triode Q5 collector, resistance R175 mono-
GND, a termination triode Q5 emitter are terminated, triode Q4 base stage meets R160, and emitter meets+15VS, and collector meets R169, electricity
It hinders R169 mono- and terminates GND, a termination triode Q4 collector, capacitor C92 mono- terminates GND, a terminating resistor R169.Mutual inductor T3
DC-DC power source circuital current is acquired by a rated transformation ratio, which is applied to resistance by diode D30, D31, D32, D33
R84 generates the voltage that is corresponding to it in resistance R84, which controls triode Q5, Q6 on-off by R176, R174, and then controls
Q4 on-off, final to control PWM_OFF level, when PWM_OFF level is low level, charger is worked normally, when PWM_OFF is
When high level, charger stops working, and short-circuit protection is had an effect.After short trouble occurs for charger, DC-DC power source circuit
Electric current increases, and increases in R84 voltage, after R84 voltage reaches certain value, opens triode Q4, Q5, and then open triode
Q4, PWM_OFF signal are changed into high level by original low level, complete charger short circuit protection.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of battery charger characterized by comprising power module, detection circuit, micro-processor interface circuit, constant pressure and flow
Circuit and field-effect tube MOS drive circuit, wherein
The power module is used to carry out AC-DC conversion to alternating current, provides operating voltage for other each modules of the charger
And charging voltage and charging current of the offer to battery under the control of the micro-processor interface circuit；
The detection circuit is detected for the charged state current to the battery, and will test result be sent to it is described
Micro-processor interface circuit；
The micro-processor interface circuit is used to receive the testing result that the detection circuit is sent, and generates rank according to the testing result
Section control signal, and the stage control signal is sent to the constant pressure and flow circuit；
The constant pressure and flow circuit is used to receive the stage control signal that the micro-processor interface circuit is sent, and by the stage
Control signal is converted to pwm control signal, is charged with controlling the MOS drive circuit to the battery, works as charger
Into after charge mode, charger carries out pulse charge to battery multiplied by I charge rate with 0.7, to realize to electric power storage
The preliminary reparation in pond then enters the trial charging stage, the stage is with 0.4 multiplied by I after the electricity of battery reaches the first preset value
Charge rate charge to battery, to avoid high current impact injury caused by over-discharge battery, work as battery
Electricity reach the second preset value after, then ends is filled in examination, and at this time into constant-current charging phase, the stage is using I as charging current pair
Battery carries out quick charge, until battery voltage is increased to preset constant pressure setting value；Then charger enters constant-voltage charge
Stage, the stage can carry out constant-voltage charge to battery, and charging current constantly reduces, after being reduced to preset current value,
Then enter the analysis phase, in the analysis phase, charger break-off 2 minutes, then by micro-processor interface circuit to the electricity of battery
Amount is calculated according to respective algorithms, determines the state of current battery, if in good condition, enters repairing phase, to current
Battery carries out devulcanization, it is made to be restored to initialization process, if state is not good, carries out secondary fill to battery again
Electricity stops charging to the battery, and export the letter of battery damage by input/output module if state is not still good
Breath；Then enter the floating charge stage after the completion of repairing phase, the floating charge stage carries out low current charge to battery；After the floating charge stage
Then enter the maintenance stage, electric quantity loss caused by the self discharge of battery long-time is supplemented by the maintenance stage, makes accumulator electric-quantity
Maintain full state；
The MOS drive circuit is used to the pwm control signal being converted to driving signal, is filled with driving to the battery
Electricity.
2. battery charger according to claim 1, which is characterized in that the charger further includes short-circuit protection electricity
Road, the short-circuit protection circuit are used to disconnect charging immediately when short circuit occurs for the battery charger.
3. battery charger according to claim 1, which is characterized in that the charger further includes input and output mould
Block, the input/output module are used to input the type information of battery to be charged, are also used to the control in the micro-processor interface circuit
The lower output charging relevant information of system.
4. described in any item battery chargers according to claim 1~3, which is characterized in that the charger further includes storing
Battery charging management module, the battery charge management module be used for by the power module the micro-processor interface circuit control
The lower charging voltage provided of system and charging current charge to the battery.
5. battery charger according to claim 1, which is characterized in that the power module includes: DC-DC power source list
Member, AC-DC power supply unit and Auxiliary Power Units, wherein
The AC-DC power supply unit is used to carry out AC-DC conversion to alternating current, and provides correlation for the DC-DC power source unit and fill
Piezoelectric voltage and charging current；
The DC-DC power source unit is used to provide controllable charging current and charging electricity under the control of the micro-processor interface circuit
Pressure, and it is converted into the charging current and charging voltage for meeting battery charging；
The Auxiliary Power Units are used to provide operating voltage to other each modules of the charger.
6. battery charger according to claim 1, which is characterized in that the current charged state of the battery is specific
It include: the current charging current of the battery, charging voltage, environment temperature and the current temperature of the battery.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105140581A (en) * | 2015-09-22 | 2015-12-09 | 北京阳光天成信息技术有限公司 | Storage battery acquisition and output equipment |
| CN105720659B (en) * | 2016-04-21 | 2019-07-09 | 福建工程学院 | Electric bicycle universal intelligent charger and its method based on ARM |
| CN106208230A (en) * | 2016-08-16 | 2016-12-07 | 深圳天邦达科技有限公司 | A kind of battery management system of band charging stage current-limiting function |
| CN106208252A (en) * | 2016-08-31 | 2016-12-07 | 苏州迈力电器有限公司 | The adjustable safety charger of positive and negative square wave |
| CN109004303B (en) * | 2018-09-30 | 2023-10-27 | 河南绿城智慧新能源有限公司 | Storage battery maintenance method and device based on service environment detection |
| CN110829537B (en) * | 2019-11-21 | 2023-05-12 | 四川长虹电源有限责任公司 | Aviation lithium battery pack charging management system |
| CN113394861A (en) * | 2021-07-09 | 2021-09-14 | 苏州迈力电器有限公司 | Llc intelligent charger based on dynamic adjustment |
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