CN106374599B - A kind of intelligent charger for electric bicycle - Google Patents
A kind of intelligent charger for electric bicycle Download PDFInfo
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- CN106374599B CN106374599B CN201610815044.9A CN201610815044A CN106374599B CN 106374599 B CN106374599 B CN 106374599B CN 201610815044 A CN201610815044 A CN 201610815044A CN 106374599 B CN106374599 B CN 106374599B
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- 238000007600 charging Methods 0.000 claims abstract description 78
- 238000001914 filtration Methods 0.000 claims abstract description 71
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 40
- 239000004065 semiconductor Substances 0.000 claims description 63
- 239000003990 capacitor Substances 0.000 claims description 49
- 238000005070 sampling Methods 0.000 claims description 34
- 238000004804 winding Methods 0.000 claims description 32
- 230000005611 electricity Effects 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000006837 decompression Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- H02J7/0026—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H02J7/0072—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H02J2007/10—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of intelligent charger for electric bicycle, including lightning-protection module, EMI filter module, prime rectification filtering module, power conversion module, the first rear class rectification filtering module, output module, MCU control module, PWM control module, constant pressure and flow detection module.Lightning-protection module, EMI filter module, prime rectification filtering module, power conversion module, the first rear class rectification filtering module, output module are sequentially connected.First rear class rectification filtering module is connected by constant pressure and flow detection module with PWM control module.The output end of output module is connected by constant pressure and flow detection module with PWM control module.PWM control module is connected with power conversion module.MCU control module is connected by circulation with output module.The charged state of the MCU control module detection battery of the intelligent charger for electric bicycle, and in accumulator super-charge or when can not charge, the charge switch for controlling output module disconnects, and realizes effective management to battery charging, improves the service life of battery.
Description
Technical field
The present invention relates to power technique fields more particularly to a kind of intelligent charger for electric bicycle.
Background technique
Existing intelligent charger for electric bicycle will continue to hold for a long time after battery of electric vehicle is fully charged without charging protection function is crossed
Continuous charging, leads to electromobile battery overcharge, service life is affected；In addition, electromobile battery is not charging or is filling
Do not enter electricity when, charger can not identify.
Summary of the invention
In view of the deficiencies of the prior art, the invention proposes a kind of intelligent charger for electric bicycle, electric motor intelligent chargings
The MCU control module of device controls the conducting and cut-off of the charge switch of output module, solves according to the charged state of battery
Existing intelligent charger for electric bicycle because without distinguish battery charged state caused by accumulator super-charge or can not fill electricity problem,
Improve the service life of battery.
To achieve the goals above, technical solution of the present invention is as follows:
A kind of intelligent charger for electric bicycle, including lightning-protection module, EMI filter module, prime rectification filtering module, power turn
It changes the mold block, the first rear class rectification filtering module, output module, MCU control module, PWM control module, constant pressure and flow and detects mould
Block, the second rear class rectification filtering module.Lightning-protection module, EMI filter module, prime rectification filtering module, power conversion module,
One rear class rectification filtering module, output module are sequentially connected.First rear class rectification filtering module passes through constant pressure and flow detection module
It is connected with PWM control module.The output end of output module is connected by constant pressure and flow detection module with PWM control module.
PWM control module is connected with power conversion module.MCU control module is connected by circulation with output module.Power conversion module is simultaneously
And it is connected with the second rear class rectification filtering module；Second rear class rectification filtering module respectively with MCU control module, constant pressure and flow
Detection module is connected.
Further, constant pressure and flow detection module include voltage sampling unit, voltage regulation unit, current sampling unit,
Electric current comparing unit, constant pressure and flow signal output unit.Second rear class rectification filtering module and constant pressure and flow signal output unit
It is connected.First rear class rectification filtering module is connected with voltage sampling unit；Voltage sampling unit passes through voltage regulation unit
It is connected with constant pressure and flow signal output unit.The output end of output module is connected with current sampling unit；Current sample list
Member is connected through overcurrent comparing unit with constant pressure and flow signal output unit.Constant pressure and flow signal output unit and PWM are controlled
Module is connected.
Further, MCU control module includes MCU chip U1, resistance R36, R46, R47, R48.The feedback of MCU chip U1
Pin is connected by resistance R47 with the cathode output end of output module；And the feedback pin of MCU chip U1 passes through resistance
R48 ground connection；The signal output pin of MCU chip U1 is connected by resistance R46 with output module；The charging electricity of MCU chip U1
Stream detection pin is connected by resistance R36 with the input terminal of constant pressure and flow detection module.
Further, output module includes p-type metal-oxide-semiconductor Q2, N-type metal-oxide-semiconductor Q3, voltage-stabiliser tube ZD1, resistance R30, R40, R41.
The cathode output end of first rear class rectification filtering module is connected with the drain electrode of p-type metal-oxide-semiconductor Q2；The source electrode of p-type metal-oxide-semiconductor Q2 is defeated
Module cathode output end out.Voltage-stabiliser tube ZD1 is connected in parallel between the grid and drain electrode of p-type metal-oxide-semiconductor Q2；Resistance R30 and voltage-stabiliser tube ZD1
It is in parallel.The grid of p-type metal-oxide-semiconductor Q2 is connected by resistance R41 with the source electrode of N-type metal-oxide-semiconductor Q3.The drain electrode of N-type metal-oxide-semiconductor Q3 with
The cathode output end of first rear class rectification filtering module is connected；The drain electrode of N-type metal-oxide-semiconductor Q3 is output module cathode output end.
The cathode output end and process resistance R40 of first rear class rectification filtering module are connected with the grid of N-type metal-oxide-semiconductor Q3；N-type
The grid of metal-oxide-semiconductor Q3 and it is connected with MCU control module.
Further, power conversion module includes transformer T1, resistance R8, R10, R11, capacitor C3, diode D1.Resistance
R8 connects between the armature winding of transformer T1 by diode D1；Resistance R11 passes through capacitor C3 connection resistance R8 and diode
The common node of D1；Resistance R10 and resistance R11 are parallel with one another.The first secondary windings of transformer T1 and the rectification of the first rear class are filtered
Wave module is connected；The second subprime winding of transformer T1 is connected with MCU control module.
Further, PWM control module include PWM chip U3, N-type metal-oxide-semiconductor Q1, diode D2, D3, resistance R18, R12,
R13, R14, R15, R16, R17, R18, R3, R5, capacitor C5, C6, C7, photodiode IC2.The output pin of PWM chip U3
It is connected by resistance R18 with the grid of N-type metal-oxide-semiconductor Q1；The grid of N-type metal-oxide-semiconductor Q1 is connected by resistance R3；Transformer T1
The negative input of armature winding be connected with the source electrode of N-type metal-oxide-semiconductor Q1；The drain electrode of N-type metal-oxide-semiconductor Q1 connects by resistance R5
Ground；Diode D3 is in parallel with resistance R18.The biasing winding of transformer T1 successively passes through resistance R12, diode D2 and PWM core
The power pins of piece U3 are connected；The over-current detection pin of PWM chip U3 is connected by resistance R17 with the drain electrode of N-type metal-oxide-semiconductor Q1
It connects；The over-current detection pin and process capacitor C6 of PWM chip U3 is grounded.
Further, constant pressure and flow detection module includes transport and placing device IC4, controllable source of stable pressure IC3, IC5, diode D7, hair
Optical diode U3A, resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R32, resistance R34, resistance R37,
Resistance R38, resistance R39, capacitor C12, C13, C15, C16.The inverting input terminal of transport and placing device IC4 is by resistance R32 and output mould
The cathode output end of block is connected；The normal phase input end of transport and placing device IC4 successively passes through the anode of resistance R37, R38 and output module
Output end is connected.The cathode of controllable source of stable pressure IC5 and the common node that resistance R37 Yu resistance R38 are separately connected with reference to pole；Electricity
It hinders the common node of R37 and resistance R38 and is grounded by capacitor C16.The plus earth of controllable source of stable pressure IC5；Capacitor C14 is simultaneously
It is associated between the inverting input terminal and normal phase input end of transport and placing device IC4；The inverting input terminal of transport and placing device IC4 successively passes through capacitor
C15, resistance R34 are connected with the output end of transport and placing device IC4；The normal phase input end of transport and placing device IC4 is grounded by resistance R39；The
Two rear class rectification filtering modules successively pass through resistance R23, R22, controllable source of stable pressure IC3 ground connection；The reference pole of controllable source of stable pressure IC3
It is connected by resistance R24 with the cathode of diode D5, and is grounded by resistance R26；The cathode of controllable source of stable pressure IC3 passes through
Diode D7 is connected with the output end of transport and placing device IC4, and is successively grounded by capacitor C12, resistance R25, C13；Luminous two
Pole pipe U3A is in parallel with resistance R22, and light emitting diode U3A provides optical signal for PWM control module.
A kind of intelligent charger for electric bicycle, including lightning-protection module, EMI filter module, prime rectification filtering module, power turn
It changes the mold block, the first rear class rectification filtering module, output module, MCU control module, PWM control module, constant pressure and flow and detects mould
Block, the second rear class rectification filtering module.
Lightning-protection module, EMI filter module, prime rectification filtering module, power conversion module, the first rear class rectifying and wave-filtering mould
Block, output module are sequentially connected.The charging current information that PWM control module is fed back according to constant pressure and flow detection module, first passes through
Control power conversion module makes battery carry out constant-current charge.During constant-current charge, the voltage of battery rises；Work as electric power storage
When the voltage in pond rises to predetermined value, PWM control module adjustment power conversion module makes battery carry out constant-voltage charge；Constant pressure
In charging process, charging current is gradually reduced；The charging current that MCU control module detection exports output module detects；
When charging current is less than predetermined value, MCU control module controls output module and disconnects, and battery charging terminates.
Further, constant pressure and flow detection module include voltage sampling unit, voltage regulation unit, current sampling unit,
Electric current comparing unit, constant pressure and flow signal output unit.Second rear class rectification filtering module is constant pressure and flow signal output unit
Working power is provided.When constant-current charge, current sampling unit samples the charging current of the output of output module；Electric current ratio
Charge current sample signal is compared with reference signal compared with unit, acquires battery charging current error signal；Electric current comparing unit
The constant pressure and constant flow control signals of constant pressure and flow signal output unit output are adjusted according to battery charging current error signal；PWM controls mould
Root tuber controls the output of power conversion module according to the duty ratio of constant pressure and constant flow control signals adjusted adjustment PWM, so that defeated
The charging current of module output maintains constant current state out.When constant-voltage charge, voltage sampling unit rectifies first rear class
The charging voltage of filter module output is sampled；The charging voltage size that voltage regulation unit is sampled according to voltage sampling unit
Adjust the constant pressure and constant flow control signals of constant pressure and flow signal output unit output；PWM control module is controlled according to constant pressure and flow to be believed
Number size adjust pulse duty factor, thus control power conversion module energy output so that output module output charging
Voltage maintains pressure constant state.
Beneficial effects of the present invention:
(1) charged state of the MCU control module detection battery of the intelligent charger for electric bicycle, and in battery mistake
When filling or can not charge, the charge switch for controlling output module is disconnected, and is realized effective management to battery charging, is improved storage
The service life of battery.
(2) intelligent charger for electric bicycle detects the big of charging current and charging voltage by constant pressure and flow detection module
Small, PWM control module controls power conversion module according to the size of charging current and charging voltage, so that the electric motor intelligent fills
Electric appliance realizes constant-current constant-voltage charging, avoids battery charging excessive.
Detailed description of the invention
Fig. 1 is logic block-diagram of the invention.
Fig. 2 is the logic block-diagram of constant pressure and flow detection module 9 in Fig. 1.
Fig. 3 is circuit diagram of the invention.
Wherein, the appended drawing reference of Fig. 1-Fig. 3 are as follows: lightning-protection module 1, EMI filter module 2, prime rectification filtering module 3, function
Rate conversion module 4, the first rear class rectification filtering module 5, output module 6, MCU control module 7, PWM control module 8, constant pressure and constant
Flow detection module 9, voltage sampling unit 91, voltage regulation unit 92, current sampling unit 93, electric current comparing unit 94, constant pressure
Constant current signal output unit 95.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.
A kind of intelligent charger for electric bicycle, including lightning-protection module 1, EMI filter module 2, prime rectification filtering module 3, function
Rate conversion module 4, the first rear class rectification filtering module 5, output module 6, MCU control module 7, PWM control module 8, constant pressure and constant
Flow detection module 9, the second rear class rectification filtering module 10.
Lightning-protection module 1, EMI filter module 2, prime rectification filtering module 3, power conversion module 4, the rectification filter of the first rear class
Wave module 5, output module 6 are sequentially connected；First rear class rectification filtering module 5 is controlled by constant pressure and flow detection module 9 and PWM
Module 8 is connected；The output end of output module 6 is connected by constant pressure and flow detection module 9 with PWM control module 8；Prime is whole
Stream filter module 3 is connected with PWM control module 8；PWM control module 8 is connected with power conversion module 4；MCU control module
7 are connected by circulation with output module 6；Power conversion module 4 and it is connected with the second rear class rectification filtering module 10；Second rear class
Rectification filtering module 10 is connected with MCU control module 7, constant pressure and flow detection module 9 respectively.
Alternating current 220V is inputted from the input terminal of lightning-protection module 1.When alternating current because lightning stroke or other factors generate high pulse voltage
When, it will damage the charger.The effect of lightning-protection module 1 is exactly to be generated on release circuit because of indirect lightning strike in the shortest time
A large amount of pulse energies to safety line on, to protect charger.Then EMI filter module 2 inhibits lightning-protection module 1 to export city
Electromagnetic interference in electricity；In addition, EMI filter module 2 can also prevent charger from generating battery interference to power grid.EMI filters mould
The higher direct current of voltage of output smoothing after the rectification of electric main prime rectification filtering module 3 that block 2 exports, filtering.Function
Rate conversion module 4 converts high voltage direct current to the low-voltage DC suitable for output module 6.Second rear class rectification filtering module 10
Respectively MCU control module 7, constant pressure and flow detection module 9 provide operating voltage.Prime rectification filtering module 3 is that PWM controls mould
Block 8 provides over-current detection and compensates enabling signal.
When charging starts, PWM control module 8 controls the output of power conversion module 4, so that battery carries out constant current and fills
Electricity.Constant pressure and flow detection module 9 samples the output electric current of output module 6, and constant pressure and flow detection module 9 is by sample rate current
It is converted to voltage signal, and the voltage signal after conversion is compared with reference voltage, acquires current error signal, then will be accidentally
Difference signal feeds back to PWM control module 8.PWM control module 8 adjusts the duty ratio of PWM according to current error signal to control function
The output of rate conversion module 4, so that the electric current that output module 5 exports maintains constant current state.
During constant-current charge, the voltage of battery can be gradually increasing, when the voltage of battery rises to some value,
PWM control module 8 controls the output of power conversion module 4, so that battery carries out constant-voltage charge.When constant-voltage charge, constant pressure and constant
Stream detection module 9 sample and compare sampled voltage to the voltage after 5 rectifying and wave-filtering of the first rear class rectification filtering module
Compared with.Then voltage comparison result is sent to PWM control module 8；When the voltage of the first rear class rectification filtering module 5 output rises
Or when decline, PWM control module 8 controls the output of power conversion module 4 by adjusting the duty ratio of PWM, so that after first
Grade 5 output voltage of rectification filtering module maintains pressure constant state.
When constant-voltage charge, MCU control module 7 samples the charging current of battery, and MCU control module 7 will charge
Current sampling data is compared with charging current threshold value, when MCU control module 7 determines charging current less than charging current threshold value
When, MCU control module 7 controls output module 6 and is closed, and battery stops charging.
Lightning-protection module 1 includes fuse F1, varistor MOV1.Fuse F1 connects on the negative input of the charger；Pressure
Quick resistance MOV1 connects between the electrode input end and negative input of the charger.
EMI filter module 2 includes mutual inductor TL1, TL2, TL3, capacitor CX1, CX2, resistance R1, R2, R1A, R2A.Mutually
Sense coil TL1, TL2, TL3 are sequentially connected；Resistance R1, R2 are serially connected；Resistance R1A, R2A are serially connected；Resistance after series connection
R1, R2 and series connection after resistance R1A, R2A connect between the cathode output end and cathode output end of mutual inductor TL1；Capacitor
CX1 connects between the cathode output end and cathode output end of mutual inductor TL1.Capacitor CX2 connects in the positive defeated of mutual inductor TL2
Between outlet and cathode output end.
Prime rectification filtering module 3 includes rectifier bridge stack DB1, capacitor C1, C2, C4.The anode input of rectifier bridge stack DB1
End, the cathode output end of mutual inductor TL3, cathode output end are connected negative input respectively；Capacitor C1, C2, C4 connect respectively
Between the cathode output end and cathode output end of rectifier bridge stack DB1；The cathode output end of rectifier bridge stack DB1 is grounded.
Power conversion module 4 includes transformer T1, resistance R8, R10, R11, capacitor C3, diode D1.Resistance R8 passes through two
Pole pipe D1 connects between the armature winding of transformer T1；Resistance R11 is public by capacitor C3 connection resistance R8's and diode D1
Node；Resistance R10 and resistance R11 are parallel with one another.Specifically, resistance R8 is connected with the cathode of diode D1.Transformer T1 packet
Containing the first secondary windings, second subprime winding.First secondary windings, second subprime winding are altogether.
First rear class rectification filtering module 5 includes diode D5, resistance R20, R21, capacitor C8, C9, C10, mutual inductor
L1.The first secondary windings cathode output end of transformer T1 is connected by diode D5 with the electrode input end of mutual inductor L1
It connects；The first secondary windings of the negative input connection transformer T1 of mutual inductor L1, second subprime winding common ground.Diode
Cathode difference capacitor C9, C10 ground connection of D5.The anode of diode D5 successively passes through resistance R20, capacitor C8 is connected to cathode；Electricity
Resistance R21 and resistance R20 is in parallel.
Second rear class rectification filtering module 10 includes diode D6, capacitor C11.The second subprime winding of transformer T1 is just
Pole output end is connected with the anode of diode D6；The cathode of diode D6 is grounded by capacitor C11；The cathode of diode D6 point
It is not connected with the power input of CU control module 7, constant pressure and flow detection module 9.
Output module 6 includes p-type metal-oxide-semiconductor Q2, N-type metal-oxide-semiconductor Q3, voltage-stabiliser tube ZD1, resistance R30, R40, R41.Mutual inductor
The cathode output end of L1 is connected with the drain electrode of p-type metal-oxide-semiconductor Q2；The source electrode of p-type metal-oxide-semiconductor Q2 is 6 cathode output end of output module.
Voltage-stabiliser tube ZD1 is connected in parallel between the grid and drain electrode of p-type metal-oxide-semiconductor Q2；Resistance R30 is in parallel with voltage-stabiliser tube ZD1.P-type metal-oxide-semiconductor Q2
Grid be connected with the source electrode of N-type metal-oxide-semiconductor Q3 by resistance R41.The drain electrode of N-type metal-oxide-semiconductor Q3 and the cathode of mutual inductor L1
Output end is connected.The drain electrode (i.e. the cathode output end of mutual inductor L1) of N-type metal-oxide-semiconductor Q3 is 6 cathode output end of output module.
The cathode output end and process resistance R40 of mutual inductor L1 is connected with the grid of N-type metal-oxide-semiconductor Q3.The anode of output module 6
Output end is the cathode output end of the charger, and the cathode output end of output module 6 is the cathode output end of the charger.
MCU control module 7 include MCU chip U1, Light-emitting diode LED 1, LED2, decompression chip U2, resistance R33, R36,
R44, R45, R46, R47, R48, capacitor C17, C18, C19, C20.
The feedback pin of MCU chip U1 is connected by resistance R47 with the cathode output end of output module 6；And MCU core
The feedback pin of piece U1 passes through resistance R48, capacitor C20 ground connection respectively.The signal output pin of MCU chip U1 passes through resistance R46
It is connected with the grid of the N-type metal-oxide-semiconductor Q3 of output module 6.The first light emitting control pin of MCU chip U1 successively passes through resistance
R44, Light-emitting diode LED 2 are grounded.The second light emitting control pin of MCU chip U1 successively passes through resistance R45, light emitting diode
LED1 ground connection.
The charging current detection pin of MCU chip U1 is connected by resistance R36 with the cathode output end of output module 6,
The 5th pin and process capacitor C18 of MCU chip U1 is grounded.
The cathode of diode D6 is connected by resistance R33, decompression chip U2 with the power pins of MCU chip U1.MCU core
The power pins of piece U1 and respectively by capacitor C17, C19 be grounded.
PWM control module 8 include PWM chip U3, N-type metal-oxide-semiconductor Q1, diode D2, D3, resistance R18, R12, R13, R14,
R15, R16, R17, R18, R3, R5, capacitor C5, C6, C7, photodiode IC2.
Preferably, the model OB2269 of PWM chip U3.The output pin (GATE) of PWM chip U3 by resistance R18 with
The grid of N-type metal-oxide-semiconductor Q1 is connected；The grid of N-type metal-oxide-semiconductor Q1 is connected by resistance R3；The armature winding of transformer T1
Negative input is connected with the source electrode of N-type metal-oxide-semiconductor Q1；The drain electrode of N-type metal-oxide-semiconductor Q1 is grounded by resistance R5；Diode D3 with
Resistance R18 is in parallel.
The biasing winding of transformer T1 successively passes through the power pins (VDD) of resistance R12, diode D2 Yu PWM chip U3
It is connected.The over-current detection pin (SENSE) of PWM chip U3 is connected by resistance R17 with the drain electrode of N-type metal-oxide-semiconductor Q1；PWM
The over-current detection pin (SENSE) and process capacitor C6 of chip U3 is grounded.
The output end of prime rectification filtering module 3 successively passes through the starting pin of resistance R13, R14, R15 and PWM chip U3
(VIN) it is connected, to start overcurrent protection (OCP) compensation function of PWM chip U3.So that PWM chip U3 has preferably
OCP compensation characteristic, when the output voltage of prime rectification filtering module 3 changes, the starting pin (VIN) of PWM chip U3
Electric current can also change, PWM chip U3 realizes compensation automatically by detecting the changing value of the electric current, so that PWM chip
U3 OCP curve in wider input voltage range is relatively flat, achievees the purpose that constant power output.Resistance R13, R14, R15
Resistance value adjustable OCP compensation performance, which is also influenced by PWM chip U3 output PWM frequency.When generation overfill
The phenomenon that repaying can increase the resistance value of resistance R13, R14, R15 to reduce compensation ability.
The feedback signal pin (FB) of PWM chip U3 is grounded by photodiode IC2, and is grounded by capacitor C5.
Concussion resistance connection pin (RI) of PWM chip U3 is grounded by resistance R16.
Constant pressure and flow detection module 9 includes voltage sampling unit 91, voltage regulation unit 92, current sampling unit 93, electricity
Flow comparing unit 94, constant pressure and flow signal output unit 95.Second rear class rectification filtering module 10 is exported with constant pressure and flow signal
Unit 95 is connected.First rear class rectification filtering module 5 is connected with voltage sampling unit 91；Voltage sampling unit 91 is by electricity
Pressure adjusts unit 92 and is connected with constant pressure and flow signal output unit 95.The output end and current sampling unit 93 of output module 6
It is connected；Current sampling unit 93 is connected through overcurrent comparing unit 94 with constant pressure and flow signal output unit 95.Constant pressure and constant
Stream signal output unit 95 is connected with PWM control module 8.
When charging starts, battery is in low-pressure state, and PWM control module 8 controls the output of power conversion module 4, makes
It obtains battery and carries out constant-current charge.Second rear class rectification filtering module 10 is that constant pressure and flow signal output unit 95 provides work electricity
Source.When constant-current charge, current sampling unit 93 samples the charging current of the output of output module 6, electric current comparing unit
94 are compared charge current sample signal with reference signal, acquire battery charging current error signal；Electric current comparing unit 94
The constant pressure and constant flow control signals exported according to battery charging current error signal adjustment constant pressure and flow signal output unit 95；PWM controls mould
Block 8 adjusts the duty ratio of PWM according to constant pressure and constant flow control signals adjusted to control the output of power conversion module 4, so that
The charging current that output module 5 exports maintains constant current state.
During constant-current charge, the voltage of battery can be gradually increasing, when the voltage of battery rises to some value,
PWM control module 8 adjusts the output of power conversion module 4, so that battery carries out constant-voltage charge.When constant-voltage charge, voltage is adopted
The charging voltage that sample unit 91 exports the first rear class rectification filtering module 5 samples, and voltage regulation unit 92 is according to voltage
The constant pressure and flow that the size for the charging voltage sampled signal that sampling unit 91 exports exports constant pressure and flow signal output unit 95
Control signal is adjusted；Charging voltage sampled signal is fed back to PWM control module 8 by constant pressure and flow signal output unit 95；
PWM control module 8 adjusts the duty ratio of PWM according to charging voltage sampled signal to control the output of power conversion module 4, so that
5 output voltage of output module maintains pressure constant state.
More specifically, voltage sampling unit 91 includes resistance R24, R26.Voltage regulation unit 92 includes controllable source of stable pressure
IC3, capacitor C12, C13, resistance R25.Current sampling unit 93 includes resistance R32.Electric current comparing unit 94 includes transport and placing device
IC4, controllable source of stable pressure IC5, diode D7, resistance R34, resistance R37, resistance R38, resistance R39, capacitor C14, C15, C16.
Constant pressure and flow signal output unit 95 includes light emitting diode U3A, resistance R22, R23.The model of controllable source of stable pressure IC3, IC5
TL431。
The inverting input terminal of transport and placing device IC4 is connected by resistance R32 with the cathode output end of output module 6；Transport and placing device
The normal phase input end of IC4 successively passes through resistance R37, R38 and is connected with the cathode output end of output module 6.Controllable source of stable pressure IC5
Cathode and be separately connected the common node of resistance R37 Yu resistance R38 with reference to pole；The common node of resistance R37 and resistance R38 is simultaneously
And it is grounded by capacitor C16.The plus earth of controllable source of stable pressure IC5.Capacitor C14 is connected in parallel on the inverting input terminal of transport and placing device IC4
Between normal phase input end.The inverting input terminal of transport and placing device IC4 successively passes through the defeated of capacitor C15, resistance R34 and transport and placing device IC4
Outlet is connected.The normal phase input end of transport and placing device IC4 is grounded by resistance R39.The cathode of diode D6 successively passes through resistance
R23, R22, controllable source of stable pressure IC3 ground connection.The cathode phase of resistance R24 and diode D5 is passed through in the reference pole of controllable source of stable pressure IC3
Connection, and be grounded by resistance R26.The cathode of controllable source of stable pressure IC3 passes through the output end phase of diode D7 and transport and placing device IC4
Connection, and be successively grounded by capacitor C12, resistance R25, C13.Light emitting diode U3A is in parallel with resistance R22, and luminous two
Pole pipe U3A provides optical signal for photodiode IC2.
The operation principle of the present invention is that:
When charger input current is excessive, fuse F1 disconnection prevents charger to be burned.Mutual inductor TL1, TL2,
TL3, capacitor CX1, CX2 carry out multistage decaying to differential mode conducted EMI noise, eliminate the influence of EMI noise.220V electric main warp
Become pulse direct current after over commutation bridge heap DB1 rectification, pulse direct current becomes after the pressure stabilizing of capacitor C1, C2, C4 and filtering
At smooth direct current.
The output end of PWM chip U3 provides pulse signal for the grid of N-type metal-oxide-semiconductor Q1, controls the conducting of N-type metal-oxide-semiconductor Q1
With cut-off；When the grid of N-type metal-oxide-semiconductor Q1 receives high level, N-type metal-oxide-semiconductor Q1 conducting, the armature winding of transformer begins with electricity
Stream passes through, so that the secondary windings of transformer starts storage energy；When the grid of N-type metal-oxide-semiconductor Q1 receives low level, N-type MOS
Pipe Q1 cut-off, the armature winding no current of transformer T1 pass through；At this point, the first secondary windings starts to discharge.The of transformer T1
With the Same Name of Ends of armature winding on the contrary, when being connected when the armature winding of transformer T1, the first secondary windings starts one secondary windings
Charging；When the cut-off of the armature winding of transformer T1, the first secondary windings starts to discharge by diode D5.Capacitor C9, C10 couple
The impulse wave of diode D5 output is filtered and pressure stabilizing, makes to be able to maintain more stable voltage when diode D5 power on/off, mutually
On the one hand sense coil L1 further filters the impulse wave of diode D5 output, one side filtering circuit generates humorous
Wave keeps the stabilization of output voltage.
Similarly, transformer T1 second subprime winding output energy successively pass through diode D6, capacitor C11 rectification,
It is that MCU chip U1 and light emitting diode U3A powers after filtering.
Because of the non-ideal device of transformer T1, there are leakage inductances, and can also have stray inductance in actual track；Work as N
When type metal-oxide-semiconductor Q1 is disconnected, the energy in leakage inductance and stray inductance can generate very high due to voltage spikes in the drain electrode of N-type metal-oxide-semiconductor Q1,
So as to cause the damage of device.Capacitor C3, resistance R8, diode D1 form RCD absorbing circuit, and capacitor C3 is used to keep in leakage inductance energy
Amount, resistance R8 dissipate it.
MCU chip U1 is sampled by charging voltage of the resistance R47 to battery, then by charging voltage sampled value with
Charging voltage threshold value compares；When determining battery and being reversely connected or do not connect, MCU chip U1 controls P by N-type metal-oxide-semiconductor Q3
Type metal-oxide-semiconductor Q2 cut-off, battery stop charging.MCU chip U1 detects the charging current of battery, resistance R46 by resistance R46
Charging current is converted to voltage signal, MCU chip U1 compares voltage signal after conversion and charging current threshold value, battery
In constant-voltage charge, charging current can be gradually reduced, when MCU chip U1 determines charging current less than charging current threshold value,
Then illustrate that battery fills with electricity, the signal output pin of MCU chip U1 exports low level, controls P by N-type metal-oxide-semiconductor Q3
Type metal-oxide-semiconductor Q2 cut-off, battery stop charging.It is MCU chip that decompression chip U2, which carries out decompression to the voltage that diode D6 is exported,
U1 provides working power.When battery charging, MCU chip U1 controls Light-emitting diode LED 1 and glistens.When battery is fully charged
When, MCU chip U1 controls Light-emitting diode LED 2 and shines.
PWM chip U3 receives the charge information of light emitting diode U3A feedback by photodiode IC2；PWM chip U3 root
According to charge information, the size of the duty ratio of its PWM is adjusted, to the voltage of transformer T1 output be adjusted, so that electric power storage
Pond is first pre-charged with low current constant current；When rising to certain value to battery voltage, PWM chip U3 regulates and controls N-type MOS
Pipe Q1 provides the electric current of battery constant-current charge；When the voltage of battery reaches close to when saturation, PWM chip U3 regulates and controls N
Type metal-oxide-semiconductor Q1, battery start to carry out constant-voltage charge with an overcharged voltage, until battery charging terminates.
When charging starts, battery is in low-pressure state, and PWM chip U3 controls the output of transformer T1, so that battery
Carry out constant-current charge.When constant-current charge, the charging current that resistance R32 exports 6 cathode output end of output module is sampled, and
Voltage is converted by charge current sample signal.The voltage is sent to the non-inverting input terminal of transport and placing device IC4 by R32；Resistance R37,
The bleeder circuit of R39 composition obtains reference voltage from the cathode output end of output module 6, and reference voltage is sent to transport and placing device
The inverting input terminal of IC4.Transport and placing device IC4 says that charge current sample signal is compared with reference voltage, exports an error letter
Number, feedback arrives controllable source of stable pressure IC3, so as to adjust the brightness of light emitting diode U3A.PWM chip U3 passes through photodiode
IC2 receives the charging current information of light emitting diode U3A feedback；The duty ratio for adjusting PWM, makes charging current be maintained at constant current shape
State.
During constant-current charge, the voltage of battery can be gradually increasing, when the voltage of battery rises to some value,
PWM chip U3 controls the output of transformer T1, so that battery carries out constant-voltage charge.Resistance R24, R26 rectify the first rear class
The charging voltage that filter module 9 exports is sampled, and feeds back to feedback to controllable source of stable pressure IC3.When charging voltage rise or
When reduction, the voltage value of controllable source of stable pressure IC3 adjusts therewith, so as to adjust the brightness of light emitting diode U3A.PWM chip
U3 receives the charging voltage information of light emitting diode U3A feedback by photodiode IC2, and then adjusts the duty ratio of PWM, makes
Charging voltage is maintained at pressure constant state.
What has been described above is only a preferred embodiment of the present invention, and present invention is not limited to the above embodiments.It is appreciated that this
Other improvements and changes that field technical staff directly exports or associates without departing from the basic idea of the present invention
It is considered as being included within protection scope of the present invention.
Claims (6)
1. a kind of intelligent charger for electric bicycle, it is characterised in that:
Including lightning-protection module, EMI filter module, prime rectification filtering module, power conversion module, the first rear class rectifying and wave-filtering mould
Block, output module, MCU control module, PWM control module, constant pressure and flow detection module, the second rear class rectification filtering module；
The lightning-protection module, EMI filter module, prime rectification filtering module, power conversion module, the first rear class rectifying and wave-filtering mould
Block, output module are sequentially connected；
The first rear class rectification filtering module is connected by constant pressure and flow detection module with PWM control module；
The constant pressure and flow detection module includes transport and placing device IC4, controllable source of stable pressure IC3, IC5, diode D7, light emitting diode
U3A, resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R32, resistance R34, resistance R37, resistance R38,
Resistance R39, capacitor C12, C13, C15, C16；
The inverting input terminal of transport and placing device IC4 is connected by resistance R32 with the cathode output end of the output module；Transport and placing device
The normal phase input end of IC4 successively passes through resistance R37, R38 and is connected with the cathode output end of the output module；
The cathode of controllable source of stable pressure IC5 and the common node that resistance R37 Yu resistance R38 are separately connected with reference to pole；Resistance R37 and electricity
It hinders the common node of R38 and is grounded by capacitor C16；
The plus earth of controllable source of stable pressure IC5；Capacitor C14 be connected in parallel on transport and placing device IC4 inverting input terminal and normal phase input end it
Between；The inverting input terminal of transport and placing device IC4 successively passes through capacitor C15, resistance R34 is connected with the output end of transport and placing device IC4；Amplifier
The normal phase input end of device IC4 is grounded by resistance R39；The second rear class rectification filtering module successively pass through resistance R23, R22,
Controllable source of stable pressure IC3 ground connection；The reference pole of controllable source of stable pressure IC3 passes through the two of resistance R24 and the first rear class rectification filtering module
The cathode of pole pipe D5 is connected, and is grounded by resistance R26；The cathode of controllable source of stable pressure IC3 passes through diode D7 and amplifier
The output end of device IC4 is connected, and is successively grounded by capacitor C12, resistance R25, C13；Light emitting diode U3A and resistance
R22 is in parallel, and light emitting diode U3A provides optical signal for the PWM control module；
The output module is connected by constant pressure and flow detection module with PWM control module；
The PWM control module is connected with power conversion module；
The MCU control module is connected by circulation with output module；
The MCU control module includes MCU chip U1, resistance R36, R46, R47, R48；
The feedback pin of MCU chip U1 is connected by resistance R47 with the cathode output end of output module；And MCU chip U1
Feedback pin by resistance R48 be grounded；
The signal output pin of MCU chip U1 is connected by resistance R46 with output module；
The charging current detection pin of MCU chip U1 is connected by resistance R36 with the input terminal of constant pressure and flow detection module；
The output module includes p-type metal-oxide-semiconductor Q2, N-type metal-oxide-semiconductor Q3, voltage-stabiliser tube ZD1, resistance R30, R40, R41；
The cathode output end of the first rear class rectification filtering module is connected with the drain electrode of p-type metal-oxide-semiconductor Q2；P-type metal-oxide-semiconductor Q2's
Source electrode is output module cathode output end；
Voltage-stabiliser tube ZD1 is connected in parallel between the grid and drain electrode of p-type metal-oxide-semiconductor Q2；Resistance R30 is in parallel with voltage-stabiliser tube ZD1；
The grid of p-type metal-oxide-semiconductor Q2 is connected by resistance R41 with the source electrode of N-type metal-oxide-semiconductor Q3；
The drain electrode of N-type metal-oxide-semiconductor Q3 is connected with the cathode output end of the first rear class rectification filtering module；N-type metal-oxide-semiconductor Q3's
Drain electrode is output module cathode output end；
The cathode output end and process resistance R40 of the first rear class rectification filtering module are connected with the grid of N-type metal-oxide-semiconductor Q3
It connects；The grid of N-type metal-oxide-semiconductor Q3 and it is connected with MCU control module；The power conversion module and with the second rear class rectify
Filter module is connected；The second rear class rectification filtering module is connected with MCU control module, constant pressure and flow detection module respectively
It connects.
2. intelligent charger for electric bicycle according to claim 1, it is characterised in that:
The constant pressure and flow detection module is more single comprising voltage sampling unit, voltage regulation unit, current sampling unit, electric current
Member, constant pressure and flow signal output unit；
The second rear class rectification filtering module is connected with constant pressure and flow signal output unit；
The first rear class rectification filtering module is connected with voltage sampling unit；The voltage sampling unit is adjusted through overvoltage
Unit is connected with constant pressure and flow signal output unit；
The output end of the output module is connected with current sampling unit；The current sampling unit is through overcurrent comparing unit
It is connected with constant pressure and flow signal output unit；
The constant pressure and flow signal output unit is connected with the PWM control module.
3. intelligent charger for electric bicycle according to claim 1, it is characterised in that:
The power conversion module includes transformer T1, resistance R8, R10, R11, capacitor C3, diode D1；
Resistance R8 connects between the armature winding of transformer T1 by diode D1；Resistance R11 passes through capacitor C3 connection resistance R8
With the common node of diode D1；Resistance R10 and resistance R11 are parallel with one another；
The first secondary windings of transformer T1 is connected with the first rear class rectification filtering module；The second subprime of transformer T1
Winding is connected with MCU control module.
4. the intelligent charger for electric bicycle according to claim 3, it is characterised in that:
The PWM control module include PWM chip U3, N-type metal-oxide-semiconductor Q1, diode D2, D3, resistance R12, R13, R14, R15,
R16, R17, R18, R3, R5, capacitor C5, C6, C7, photodiode IC2；
The output pin of PWM chip U3 is connected by resistance R18 with the grid of N-type metal-oxide-semiconductor Q1；The grid of N-type metal-oxide-semiconductor Q1 passes through
Resistance R3 is crossed to be connected to the ground；The negative input of the armature winding of transformer T1 is connected with the source electrode of N-type metal-oxide-semiconductor Q1；N
The drain electrode of type metal-oxide-semiconductor Q1 is grounded by resistance R5；Diode D3 is in parallel with resistance R18；
The biasing winding of transformer T1 successively passes through resistance R12, diode D2 is connected with the power pins of PWM chip U3；PWM
The over-current detection pin of chip U3 is connected by resistance R17 with the drain electrode of N-type metal-oxide-semiconductor Q1；The over-current detection of PWM chip U3 is drawn
Foot and process capacitor C6 ground connection.
5. intelligent charger for electric bicycle according to claim 1, it is characterised in that:
The charging current information that PWM control module is fed back according to constant pressure and flow detection module, first passes through control power conversion module
So that battery carries out constant-current charge；During constant-current charge, the voltage of battery rises；
When the voltage of battery rises to predetermined value, it is permanent that PWM control module adjustment power conversion module carries out battery
Pressure charging；During constant-voltage charge, PWM control module adjusts function according to the charging voltage information that constant pressure and flow detection module is fed back
Rate conversion module, so that battery maintains constant-voltage charge；
During constant-voltage charge, charging current is gradually reduced；The charging current that MCU control module detection exports output module into
Row detection；When charging current is less than predetermined value, MCU control module controls output module and disconnects, and battery charging terminates.
6. intelligent charger for electric bicycle according to claim 1, it is characterised in that:
The constant pressure and flow detection module is more single comprising voltage sampling unit, voltage regulation unit, current sampling unit, electric current
Member, constant pressure and flow signal output unit；
The second rear class rectification filtering module provides working power for constant pressure and flow signal output unit；
When constant-current charge, the current sampling unit samples the charging current of the output of output module；Electric current is more single
Charge current sample signal is compared by member with reference signal, acquires battery charging current error signal；Electric current comparing unit according to
Battery charging current error signal adjusts the constant pressure and constant flow control signals of constant pressure and flow signal output unit output；PWM control module root
The output of power conversion module is controlled according to the duty ratio of constant pressure and constant flow control signals adjusted adjustment PWM, so that output mould
The charging current of block output maintains constant current state；
When constant-voltage charge, the charging voltage that the voltage sampling unit exports the first rear class rectification filtering module is adopted
Sample；The voltage regulation unit is according to the big minor adjustment constant pressure and flow signal output unit of charging voltage that voltage sampling unit samples
The constant pressure and constant flow control signals of output；The PWM control module adjusts pulse duration according to the size of constant pressure and constant flow control signals
Than so that the energy output of power conversion module is controlled, so that the charging voltage of output module output maintains pressure constant state.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107093921B (en) * | 2017-03-23 | 2024-04-05 | 新昌县百德电子有限公司 | Intelligent charger with power failure detection function |
| CN107150607A (en) * | 2017-06-08 | 2017-09-12 | 合肥凯利科技投资有限公司 | A kind of intelligent charger |
| CN107104495A (en) * | 2017-07-05 | 2017-08-29 | 保力新能源科技(东莞)有限公司 | Charger |
| CN108790871B (en) * | 2018-05-30 | 2024-04-12 | 深圳市鑫悦购网络科技有限公司 | Charging equipment for electric vehicle |
| CN109599925A (en) * | 2019-01-24 | 2019-04-09 | 沈建良 | Novel storage battery intelligent charger |
| CN109795372B (en) * | 2019-01-30 | 2021-09-03 | 温州大学 | Intelligent charging protection device for electric vehicle |
| CN109831006B (en) * | 2019-03-04 | 2022-06-14 | 四川阿泰因机器人智能装备有限公司 | Self-adjusting charging control circuit |
| CN110365076B (en) * | 2019-07-10 | 2024-04-16 | 东莞启益电器机械有限公司 | Charging circuit capable of intelligently detecting maximum output charging current of charger |
| CN113765164A (en) * | 2020-06-01 | 2021-12-07 | 凯轮威新能源科技有限公司 | AC-DC converter |
| CN112153776B (en) * | 2020-09-18 | 2023-03-17 | 宜昌江景光电有限公司 | Driving power supply circuit for wirelessly controlling LED and LED lamp |
| CN112803562B (en) * | 2021-01-29 | 2024-04-26 | 泉州市贝瓦电子技术有限公司 | Power supply charging device capable of regulating voltage and current in wide range |
| CN113890161A (en) * | 2021-09-29 | 2022-01-04 | 深圳市明鑫电源技术有限公司 | Charging circuit and charger |
| CN115663949A (en) * | 2022-10-22 | 2023-01-31 | 深圳市麦迪瑞科技有限公司 | Regulation and control circuit for outputting instant surge current |
| CN116247784A (en) * | 2023-03-01 | 2023-06-09 | 深圳市物亦物科技有限公司 | Intelligent charging circuit and charging device |
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