CN107733039A - Detection means and method for the charger of automobile - Google Patents
Detection means and method for the charger of automobile Download PDFInfo
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- CN107733039A CN107733039A CN201711117194.3A CN201711117194A CN107733039A CN 107733039 A CN107733039 A CN 107733039A CN 201711117194 A CN201711117194 A CN 201711117194A CN 107733039 A CN107733039 A CN 107733039A
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- 238000001514 detection method Methods 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000205 computational method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- H02J7/0021—
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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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging 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
- 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
- B60L53/30—Constructional details of charging stations
-
- H02J7/0026—
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- H02J7/0027—
-
- H02J7/0077—
-
- 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
- H02J7/00304—Overcurrent protection
-
- 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
- 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
- Y02T90/12—Electric charging stations
-
- 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
Abstract
Embodiment of the present invention provides the detection means and method of a kind of charger for automobile, belongs to automotive field.The detection method includes：Detect the inserting state of the plug of charging gun and generate first detection signal and the second detection signal；The whether complete grafting of the plug of charging gun is judged according to first detection signal；Start processor in the case of the complete grafting of plug for judging charging gun；The voltage of the output end of processor control feedback unit regulation charging gun；Whether the output end of processor detection charging gun has the output of pulse width modulation pwm signal；In the case where not detecting pwm signal, start the DC charging pattern of automobile；In the case where detecting pwm signal, start the AC charging pattern of automobile：Processor judges the capacity of the cable of charging gun according to the second detection signal；Processor judges the power output of charging gun according to the dutycycle of pwm signal；Processor adjusts the charging current of the charger of automobile according to the capacity and power output of cable.
Description
Technical field
The present invention relates to automotive field, more particularly to a kind of detection means and method of the charger for automobile.
Background technology
With the increase year by year of fuel-engined vehicle recoverable amount, the environmental problem such as haze and climate warming increasingly aggravates, meanwhile, with
The increasingly reduction of global verified oil amount of storage, environmental pollution has faced dual as current auto industry with energy shortage
Problem.In the case, electric automobile by it is pollution-free, capacity usage ratio is high, low noise advantages, turn into various countries reply weather
Warm, environmental pollution, realize the optimal selection of Green Development.Meanwhile as new-energy automobile items technology is gradually ripe, use
Universalness, and embodied gradually compared to the economy with fuel vehicle, various countries issue and eliminate fuel vehicle timetable one after another, support new
Energy automobile develops.
Main power source of the electrokinetic cell as electric automobile, carry all or part of power output of electric automobile.
Its safety problem is always focus of concern, and charging safety is to ensure the important prerequisite of electrokinetic cell safe handling, therefore
Electrokinetic cell safe charging is most important to electric automobile safe operation.
At present, charging pile is all big voltage charging, if in charging, connection is broken down, and can not only damage battery, also
There can be great potential safety hazard.Therefore, it is necessary to charging gun connection is monitored and confirmed.By designing a kind of electric automobile
Charging gun connection observation circuit, it is possible to prevente effectively from the accidents such as personnel are got an electric shock, equipment is burnt occur, to electronic vapour when ensureing to charge
Car and the safety of user.
Existing alternating current-direct current charging safety monitoring scheme typically uses two independent circuits, and such a scheme versatility is not
Height, and two circuits are necessarily required to more components, add cost.Meanwhile newly issue《Electric car conduction charges
Use attachment means》DC charging car end interface safety prevention measure has further been refined, it is specified to add alternating current-direct current charging inlet
The species of value, clearly forbid unsafe charge mode application.In the case, it is existing to charge safety monitoring scheme shortcoming gradually
Fade in dew.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of detection means of charger for automobile, the detection
The charging circuit of the alternating current-direct current of automobile can be integrated into a circuit by device, so as to save the design of the charging circuit of automobile
Cost.
To achieve these goals, the one side of embodiment of the present invention provides a kind of detection of charger for automobile
Method, the detection method can include：
Detect the inserting state of the plug of charging gun and generate first detection signal and the second detection signal；
The whether complete grafting of the plug of charging gun is judged according to first detection signal；
Start processor in the case of the complete grafting of plug for judging charging gun；
The voltage of the output end of processor control feedback unit regulation charging gun；
Whether the output end of processor detection charging gun has the output of pulse width modulation pwm signal；
Processor starts the DC charging pattern of automobile in the case where not detecting pwm signal；
Processor starts the AC charging pattern of automobile in the case where detecting pwm signal；
After AC charging pattern is started：
Processor judges the capacity of the cable of charging gun according to the second detection signal；
Processor judges the power output of charging gun according to the dutycycle of pwm signal；
Processor according to the capacity of cable and power output sends signal to fill described in causing to the charger of the automobile
Motor adjusts the size of charging current.
To achieve these goals, on the other hand embodiments of the present invention also provide a kind of charger for automobile
Detection means, the device can include：Detection unit, the inserting state of plug of the detection unit for detecting the charging gun is simultaneously
First detection signal is generated, the first detection signal indicates the complete grafting of plug of charging gun；Voltage comparison unit, for connecing
Wake-up signal is sent in the case of receiving first detection signal；First gate-controlled switch, for receiving the situation of wake-up signal
Under, connect the power supply of processor；Feedback unit, for adjust charging gun output end voltage to notify the charging gun
The automobile can start to charge up；Processor, in the case where receiving wake-up signal：Control feedback unit defeated to adjust
Go out the voltage at end；Whether the output end of detection charging gun has pwm signal output；There are PWM letters in the output end for detecting charging gun
In the case of number output, start the AC charging pattern of automobile；There is no what pwm signal exported in the output end for detecting charging gun
In the case of, start the DC charging pattern of automobile.
Alternatively, the detection unit can include the first driving power and divider resistance, the first driving power and partial pressure electricity
One end connection of resistance, the plug of charging gun include detection resistance, the other end of divider resistance in the plug grafting of charging gun and
One end connection of detection resistance, the other end of detection resistance are grounded in the plug grafting of charging gun, the other end of divider resistance
For exporting first detection signal.
Alternatively, the voltage comparison unit can include the second driving power, voltage comparator, the second gate-controlled switch and the
Three driving powers；The inverting input of second driving power and voltage comparator connect, the normal phase input end of voltage comparator with
The other end connection of divider resistance, the output end of voltage comparator is connected with the second gate-controlled switch, for being connect when voltage comparator
The second gate-controlled switch is turned on when receiving first detection signal, to cause the 3rd driving power to export wake-up signal.
Alternatively, detection means may further include：Voltage conversion unit, the voltage conversion unit are used for by described in
First pwm signal of the output end of charging gun is converted into being suitable for the second pwm signal of the processor.
Alternatively, voltage conversion unit can include：Diode, the first FET, the first triode and the 4th driving
Power supply, the positive pole of diode are connected in the plug grafting of charging gun with charging gun, the grid and diode of the first FET
Negative pole connection, the source ground of the first FET, the drain electrode of the first FET is connected with the base stage of the first triode, the
The emitter stage of one triode is connected with the 4th driving power, and the colelctor electrode of the first triode is connected with the processor.
Alternatively, the other end of divider resistance can be also used for the detection letter of output second in the plug grafting of charging gun
Number, the other end of processor and divider resistance connection, it is further used for determining the cable of charging gun according to the second detection signal
Capacity.
Alternatively, the detection means may further include：Voltage follower, voltage follower are connected to processor and divided
Between the other end of piezoresistance, for separating interfering for voltage follower both end voltage.
Alternatively, the processor can be used for：The power output of charging gun is determined according to the second pwm signal；It is defeated according to this
The capacity for going out power and cable sends signal to cause the charger to adjust the big of charging current to the charger of the automobile
It is small.
Alternatively, feedback unit can include：5th driving power, the second triode and the second FET, the two or three
The base stage of pole pipe is connected with processor, and the emitter stage of the second triode is connected with the 5th driving power, the current collection of the second triode
Pole is connected with the grid of the second FET, the source ground of the second FET, the drain electrode of the second FET and diode
Negative pole connection.
The charging circuit of the alternating current-direct current of automobile can be integrated into an electricity by Pass through above-mentioned technical proposal, the detection means
Road, so as to save the design cost of the charging circuit of automobile.
The further feature and advantage of embodiment of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is that embodiment of the present invention is further understood for providing, and a part for constitution instruction, with
Following embodiment is used to explain embodiment of the present invention together, but does not form the limit to embodiment of the present invention
System.In the accompanying drawings：
Fig. 1 is the flow chart of the detection method of the charger for automobile according to an embodiment of the present invention；
Fig. 2 is the structured flowchart of detection unit according to an embodiment of the present invention；
Fig. 3 is the structural representation of the detection means of the charger for automobile according to an embodiment of the present invention；
Fig. 4 is the structural representation of the detection means of the charger for automobile according to an embodiment of the present invention；
Fig. 5 is the structural representation of the detection means of the charger for automobile according to an embodiment of the present invention；
Fig. 6 is the structural representation of the detection means of the charger for automobile according to an embodiment of the present invention；
And
Fig. 7 is the structural representation of the detection means of the charger for automobile according to an embodiment of the present invention.
Description of reference numerals
S1, the first driving power S2, the second driving power
S3, the 3rd driving power S4, the 4th driving power
S5, the 5th driving power 1, detection unit
2nd, voltage comparison unit 3, feedback unit
4th, processor M1, the first FET
M2, the second FET D1, diode
R0, the first divider resistance RC, detection resistance
R1, first resistor R2, second resistance
R3,3rd resistor R4, the 4th resistance
R5, the 5th resistance R6, the 6th resistance
R7, the 7th resistance R8, the 8th resistance
R9, the 9th resistance R10, the tenth resistance
R11, the 11st resistance R12, the 12nd resistance
VF, voltage follower U1, voltage comparator
K1, the first gate-controlled switch K2, the second gate-controlled switch
Embodiment
The embodiment of embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Embodiment described herein is merely to illustrate and explain the present invention embodiment, is not intended to limit the invention implementation
Mode.
Fig. 1 is the flow chart of the detection method of the charger for automobile according to an embodiment of the present invention.In Fig. 1
In, the detection method can include：
In step slo, detect the inserting state of the plug of charging gun and generate first detection signal and the second detection letter
Number.In this embodiment, can pre-set a detection circuit, the detection circuit includes a divider resistance and driving
One end connection of power supply, the driving power and divider resistance, the other end of the divider resistance is in the plug grafting, with being arranged on
One end connection of detection resistance on plug, the other end ground connection of the detection resistance.When the plug grafting, by detecting this point
The voltage of the other end of piezoresistance generates first detection signal and the second detection signal., should in the example of the present invention
First detection signal can be the voltage opposing plug grafting of the other end of the divider resistance before reduced value, this second detection
Signal can be the magnitude of voltage of the other end of the divider resistance.
In step S20, the whether complete grafting of the plug of the charging gun is judged according to first detection signal.In the embodiment party
In formula, the first detection signal can be the voltage of the other end of the divider resistance with respect to the reduced value before grafting.Judging
When the voltage of the other end of the divider resistance is reduced to predetermined magnitude of voltage, illustrate that the plug of the charging gun is inserted completely
Connect.
In step s 30, processor is started in the case where judging the plug complete grafting of the charging gun, the processing
The charger that device starts automobile carries out System self-test.
In step s 40, the charger of the automobile judges whether the automobile can start to charge up.It can start in the automobile
In the case of charging, the charger of the automobile sends feedback signal to processor.After the processor receives the feedback signal, lead to
Cross the voltage that the feedback unit being connected between the processor and the output end of charging gun adjusts the output end of the charging gun.This fills
After electric rifle detects that the voltage of output end reduces, judge that the automobile can start to charge up.
In step s 50, whether the output end for detecting the charging gun has pwm signal output.Processor detects the charging gun
Output end whether have pwm signal output.In this embodiment, the charging gun is if AC charging rifle, then the output
End has pwm signal output；If the charging gun is DC charging rifle, then the output end can then not have pwm signal to export.
In step S60, processor starts the DC charging of the charger in the case where not detecting pwm signal
Pattern.In this embodiment, processor does not detect that pwm signal exports, then illustrates the electricity of the output end of the charging gun
Source Type is dc source.So, the DC charging pattern of the charger should now be started.
In step S70, processor is in the case where detecting pwm signal.Start the AC charging pattern of the automobile.
In the embodiment, processor detects pwm signal, now, judges the power supply of the charging gun for AC power.So, handle
Device can for example start the AC charging pattern of the automobile by way of sending signal to vehicle control device, start to exchange
Charging.In another example of the present invention, the processor can also be vehicle control device, then the processor can be opened directly
The AC charging pattern of electrical automobile is to start AC charging.
In step S80, in the case where starting AC charging pattern, processor accounts for according to the pwm signal received
Sky compares to determine the power output of the charging gun.The computational methods that processor calculates the power output of the charging gun can be ability
Known to field technique personnel, here is omitted.
In step S90, the capacity of the cable of the charging gun is determined according to the second detection signal.The capacity can be the electricity
The maximum current that cable can pass through.In the example of the present invention, the judgment rule can be for example shown in table 1
Rule.
Table 1
The rule of correspondence shown in table 1 is to be only limitted to explain the technical side of the present invention according to corresponding national standard paper formulation
Case, the limitation to protection scope of the present invention is not formed..
In step s 11, processor is sent out according to the power output of the charging gun and the capacity of cable to the charger of automobile
The number of delivering letters with cause the charger regulation charging current size.In this embodiment, can be by by the power output
The maximum charging current for judging the charger is compared with the capacity of cable.The maximum charging current can be the power output and
Smaller value in capacity.Cable excessively stream (excessive by electric current) or the power output deficiency of charger can so be avoided the occurrence of
Situation.In addition, the regulation process and the detection process of pwm signal can be every certain during the automobile charges
Time cycle performs.Preferably, the time cycle can be 5 seconds.
Another aspect of the present invention also provides a kind of detection means of the charger for automobile.As shown in Fig. 2 the detection
Device can include detection unit 1, voltage comparison unit 2, the first gate-controlled switch K1, feedback unit 3 and processor 4.The detection
The inserting state for the plug that unit 1 can be used for detecting the charging gun simultaneously generates first detection signal, and the first detection signal refers to
Show the whether complete grafting of plug of the charging gun.Voltage comparison unit 2, which is used to send when receiving first detection signal, to be waken up
Signal.First gate-controlled switch K1 is connected on the power supply circuit of processor 4, for receiving wake-up signal by port A
When connect the power supply of the processor 4 so that the processor 4 starts.This avoid the processor 4 because being kept for the moment open
Dynamic state and the problem of cause power wastage.Feedback unit 3 is used for the voltage for adjusting the output end of the charging gun.The processor
4 are used in the case where receiving wake-up signal by port B：Feedback unit 3 is controlled to adjust the output end of charging gun (CP)
Voltage；Whether there is pwm signal output by the port D output ends for detecting the charging gun；Detecting the output of the charging gun
In the case that there is pwm signal output at end, start the AC charging pattern of the automobile；Do not have in the output end for detecting the charging gun
In the case that pwm signal exports, start the DC charging pattern of the automobile.
In an embodiment of the invention, as shown in figure 3, the detection unit 1 can include the first driving power S1
With divider resistance R0.The first driving power S1 connects with divider resistance R0 one end, and the plug of the charging gun can include inspection
Measuring resistance RC, when the plug of the charging gun does not have grafting, the divider resistance R0 other end and earth terminal are open circuits.Filled at this
During the plug grafting of electric rifle, the divider resistance R0 other end connects with detection resistance RC one end, detection resistance RC's
The other end is grounded.The divider resistance R0 other end (node between divider resistance R0 and detection resistance RC) be used to exporting this
One detection signal (i.e. the other end of divider resistance R0 is connected with voltage comparison unit 2).The first detection signal can be example
Such as voltage of the divider resistance R0 other end.When the plug of the charging gun does not have grafting, due to now divider resistance R0 and
It is to disconnect between earth terminal, then, the magnitude of voltage of the divider resistance R0 other end is first driving power S1 voltage
It is worth (in embodiments of the present invention, first driving power S1 magnitude of voltage can be+12V).When the plug of the charging gun
During grafting, now the divider resistance R0 other end connects with detection resistance RC one end, another termination of the detection resistance
Ground.So, now, the magnitude of voltage of the node between divider resistance R0 and detection resistance RC is reduced to predetermined magnitude of voltage, and this
One detection signal can be whether the node voltage value is reduced to predetermined magnitude of voltage (when the first detection signal indicates the node
When magnitude of voltage is not reduced to scheduled voltage, illustrating the plug of the charging gun does not have complete grafting).
In an embodiment of the invention, as shown in figure 4, the voltage comparison unit 2 can include the second driving
Power supply S2, voltage comparator U1, the second gate-controlled switch K2, the 3rd driving power S3, first resistor R1, second resistance R2, the 3rd
Resistance R3, the 4th resistance R4 and the 5th resistance R5.In this embodiment, second gate-controlled switch K2 can be triode.Should
Second driving power S2 is connected with first resistor R1 one end, and the first resistor R1 other end connects with second resistance R2 one end
Connect, second resistance R2 other end ground connection.Node between first resistor R1 and second resistance R2 and the voltage ratio compared with
Device U1 inverting input connection, between the voltage comparator U1 normal phase input end and divider resistance R0 and detection resistance RC
Node connection.Voltage comparator U1 output end is connected with 3rd resistor R3 one end, the 3rd resistor R3 other end
It is connected with the second gate-controlled switch K2 base stage, the 3rd resistor R3 other end also connects with second gate-controlled switch K2 emitter stage
Connect.Second gate-controlled switch K2 emitter stage is connected with the 3rd driving power S3, and second gate-controlled switch K2 colelctor electrode is used for
Wake-up signal is exported to the first gate-controlled switch K1 and processor 4 by port A and port B respectively.Second gate-controlled switch K2's
The one end of colelctor electrode also with the 5th resistance R5 is connected, the 5th resistance R5 other end ground connection.Voltage comparator U1 positive
Input is connected with the divider resistance R0 other end, when the predetermined voltage of the magnitude of voltage decreasing value of the divider resistance R0 other end
During value, voltage comparator U1 output low levels.Now, the second gate-controlled switch K2 is turned on, the second gate-controlled switch K2 colelctor electrode
Export high level (wake-up signal).
In an embodiment of the invention, the detection means can include voltage conversion unit, the voltage conversion list
Member can be used for being converted into the first pwm signal of charging gun to be suitable for the pwm signal of processor 4 second.At one of the present invention
In example, first pwm signal can be the pwm signal of the 12V from charging gun.Second pwm signal can be suitable for
The 5V of processor 4 pwm signal.As shown in figure 5, the voltage conversion unit can include diode D1, the first FET M1,
First triode Q1, the 4th driving power S4, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9 and the tenth
Resistance R10.Diode D1 positive pole in the plug grafting of charging gun and charging gun output end (CP) connect, the diode
D1 negative pole is connected with the 6th resistance R6 one end, the 6th resistance R6 other end ground connection.Diode D1 negative pole also with
7th resistance R7 one end connection, the 7th resistance R7 other end are connected with the first FET M1 grid.This first
Effect pipe M1 source ground, first FET M1 drain electrode are connected with the 8th resistance R8 one end, the 8th resistance R8
The other end be connected with the first triode Q1 base stage.First triode Q1 base stage is connected with the 9th resistance R9 one end,
The 9th resistance R9 other end is connected with the first triode Q1 emitter stage.First triode Q1 emitter stage is also with the 4th
Driving power S4 connections, the first triode Q1 colelctor electrode is connected with processor 4, for output pwm signal.First triode
The one end of Q1 colelctor electrode also with the tenth resistance R10 is connected, the tenth resistance R10 other end ground connection.
In this embodiment, as shown in fig. 6, the divider resistance R0 other end is also used in the plug grafting of charging gun
In exporting the second detection signal, second detection signal can be the magnitude of voltage of the divider resistance R0 other end.The processor 4
It is connected with the divider resistance R0 other end, is further used for receiving the second detection signal by port C, and according to the second detection believed
Number determine charging gun cable capacity.In this embodiment, processor 4 can obtain the partial pressure by the second detection signal
The magnitude of voltage of the resistance R0 other end, detection resistance RC resistance is calculated according to the magnitude of voltage, so as to further according to predetermined
The rule of correspondence judges the capacity of the cable of the charging gun.The rule of correspondence can be the rule of correspondence shown in table 1.It is preferred that
Ground, voltage follower VF can also be connected between the processor 4 and the divider resistance R0 other end, voltage follower VF with
11st resistance R11 one end connection, the 11st resistance R11 other end is connected with the 12nd resistance R12 one end, and this
12 resistance R12 other end ground connection.The processor 4 is connected with the 11st resistance R11 other end.Voltage follower VF
Interfering for the voltage positioned at voltage follower VF both ends can be separated, pass through the inspection of detection second so as to improve processor 4
Survey the accuracy that signal judges the capacity of cable.
In this embodiment, as shown in fig. 7, the feedback unit 3 can include：5th driving power S5, the two or three pole
Pipe Q2, the second FET M2, the 13rd resistance R13, the 14th resistance R14 and the 15th resistance R15.13rd resistance
R13 one end is connected with processor 4, the feedback signal for reception processing device 4.The 13rd resistance R13 other end and second
Triode Q2 base stage connection, second triode Q2 base stage are connected with the 14th resistance R14 one end, the 14th resistance
The R14 other end is connected with the second diode Q2 emitter stage, and second triode Q2 emitter stage is connected with the 5th power supply S5.
Second triode Q2 colelctor electrode is connected with the 15th resistance R15 one end, the 15th resistance R15 other end and second
Effect pipe M2 grid connection.Second FET M2 source ground, the second FET M2 drain electrode and 16 resistance
R16 one end connection, the 16th resistance R16 other end are connected with the 7th resistance R7 one end.When the processor 4 passes through end
When mouth one end from E to the 13rd resistance R13 send low level signal (feedback signal), the second triode Q2 and the second FET
M2 is connected so that the output end (CP) of charging gun is output to the first FET M1 voltage step-down, now, illustrates the automobile
Charger self-test is completed, and can be started to charge up.
In the complete grafting of the plug of charging gun, detection resistance RC one end is connected with the divider resistance R0 other end.This
When, the voltage step-down of the divider resistance R0 other end so that voltage comparator U1 exports low level to turn on the second gate-controlled switch
K2 so that the wake-up signal of second gate-controlled switch K2 colelctor electrode output high level.First gate-controlled switch K1 is connect by port A
After receiving the wake-up signal, the power supply of processor 4 is connected, processor 4 starts.Processor 4 receives this by port B and called out
After awake signal, start the carry out System self-test of the charger of automobile.After the completion of the charger self-test, send and feed back to processor 4
Signal.After the processor 4 receives feedback signal, low level signal is exported to the second triode Q2 base stage by port E.This
When the second triode Q2 and the second FET M2 connect so that the output end CP of the charging gun is output to the first FET M1
Voltage step-down, now, illustrate that the automobile can start to charge up.The charging gun detects voltage step-down, begins through the output
End output pwm signal simultaneously starts to charge up to automobile.Processor 4 detects pwm signal by port D.Do not detecting pwm signal
In the case of, processor 4 starts the DC charging pattern of automobile.In the case where detecting pwm signal, processor 4 starts vapour
The AC charging pattern of car.Under the AC charging pattern of automobile, the processor 4 receives the second detection signal, root by port C
The capacity of the cable of the charging gun is determined according to the judgment rule shown in table 1.Meanwhile the processor 4 also passes through pwm signal
Dutycycle calculates the power output of the charging gun.The power output of capacity and the charging gun that processor 4 combines the cable is come
To the automobile charger send signal with cause the charger adjust charging current, avoid cable excessively stream and charging gun it is defeated
The problem of going out underpower occurs.
Pass through above-mentioned technical proposal, this is used for the detection means of the charger of automobile and method can be by conventional truck
AC and DC charging circuit combines, and has saved design cost, improves operating efficiency.Simultaneously in charging gun to automobile
During charging, by comparing the capacity of cable and the power output of the charging gun, charging current is adjusted in real time, avoids security incident
Generation, improve the safety coefficient of the charger of automobile.
The optional embodiment of example of the present invention is described in detail above in association with accompanying drawing, still, embodiment of the present invention is not
The detail being limited in above-mentioned embodiment, can be to of the invention real in the range of the technology design of embodiment of the present invention
The technical scheme for applying mode carries out a variety of simple variants, and these simple variants belong to the protection domain of embodiment of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, embodiment of the present invention
Various combinations of possible ways are no longer separately illustrated.
It will be appreciated by those skilled in the art that realize that all or part of step in above-mentioned embodiment method is to lead to
Program is crossed to instruct the hardware of correlation to complete, the program storage is in the storage medium, including some instructions are causing
One (can be single-chip microcomputer, chip etc.) or processor (processor) perform each embodiment methods described of the application
All or part of step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
In addition, can also be combined between a variety of embodiments of embodiment of the present invention, as long as its
Without prejudice to the thought of embodiment of the present invention, it should equally be considered as embodiment of the present invention disclosure of that.
Claims (10)
1. the detection method of a kind of charger for automobile, it is characterised in that the detection method includes：
Detect the inserting state of the plug of the charging gun and generate first detection signal and the second detection signal；
The whether complete grafting of the plug of the charging gun is judged according to the first detection signal；
Start processor in the case of the complete grafting of plug for judging the charging gun；
Processor control feedback unit adjusts the voltage of the output end of the charging gun to notify vapour described in the charging gun
Car can start to charge up；
Whether the output end that the processor detects the charging gun has the output of pulse width modulation pwm signal；
The processor starts the DC charging pattern of the automobile in the case where not detecting the pwm signal；
The processor starts the AC charging pattern of the automobile in the case where detecting the pwm signal；
After the AC charging pattern is started：
The processor judges the capacity of the cable of the charging gun according to second detection signal；
The processor judges the power output of the charging gun according to the dutycycle of the pwm signal；
The processor signal sent to the charger of the automobile according to the capacity of the cable and the power output so that
Obtain the size of the charger regulation charging current.
2. the detection means of a kind of charger for automobile, it is characterised in that the detection means includes：
Detection unit, the detection unit are used for the inserting state for detecting the plug of the charging gun and generate the first detection letter
Number, the first detection signal indicates the complete grafting of plug of the charging gun；
Voltage comparison unit, for sending wake-up signal in the case where receiving the first detection signal；
First gate-controlled switch, in the case where receiving the wake-up signal, connecting the power supply of processor；
Feedback unit, for adjust the charging gun output end voltage to notify that automobile can start described in the charging gun
Charging；
The processor, in the case where receiving the wake-up signal：
The feedback unit is controlled to adjust the voltage of the output end；
Whether the output end for detecting the charging gun has pwm signal output；
In the case where the output end for detecting the charging gun has pwm signal output, start the AC charging mould of the automobile
Formula；
In the case where the output end for detecting the charging gun does not have pwm signal output, start the DC charging of the automobile
Pattern.
3. detection means according to claim 2, it is characterised in that the detection unit includes the first driving power and divided
Piezoresistance, first driving power connect with one end of the divider resistance, and the plug of the charging gun includes detection resistance,
The other end of the divider resistance is connected in the plug grafting of the charging gun with one end of the detection resistance, the detection
The other end of resistance is grounded in the plug grafting of the charging gun, and the other end of the divider resistance is described for exporting
First detection signal.
4. detection means according to claim 3, it is characterised in that the voltage comparison unit includes the second driving electricity
Source, voltage comparator, the second gate-controlled switch and the 3rd driving power；Second driving power is anti-with the voltage comparator
Phase input is connected, and the normal phase input end of the voltage comparator is connected with the other end of the divider resistance, the voltage ratio
Output end compared with device is connected with second gate-controlled switch, for receiving the first detection signal when the voltage comparator
When turn on second gate-controlled switch, to cause the 3rd driving power to export the wake-up signal.
5. detection means according to claim 4, it is characterised in that the detection means further comprises：Voltage conversion
Unit, the voltage conversion unit are used to be converted into being suitable for the place by the first pwm signal of the output end of the charging gun
Manage the second pwm signal of device.
6. detection means according to claim 5, it is characterised in that the voltage conversion unit includes：Diode, first
FET, the first triode and the 4th driving power, the positive pole of the diode in the plug grafting of the charging gun with
The charging gun connection, the grid of first FET are connected with the negative pole of the diode, first FET
Source ground, the drain electrode of first FET is connected with the base stage of first triode, first triode
Emitter stage is connected with the 4th driving power, and the colelctor electrode of first triode is connected with the processor.
7. detection means according to claim 6, it is characterised in that the other end of the divider resistance is in the charging gun
Plug grafting when be additionally operable to export the second detection signal, the processor is connected with the other end of the divider resistance, enters one
Walk the capacity of the cable for determining the charging gun according to second detection signal.
8. detection means according to claim 7, it is characterised in that further comprise：Voltage follower, the voltage with
It is connected to device between the other end of the processor and the divider resistance, for separating the voltage follower both end voltage
Interfere.
9. detection means according to claim 7, it is characterised in that the processor is used for：
The power output of the charging gun is determined according to second pwm signal；
Signal is sent to cause the charging to the charger of the automobile according to the capacity of the power output and the cable
Machine adjusts the size of charging current.
10. detection means according to claim 9, it is characterised in that the feedback unit includes：5th driving power,
Second triode and the second FET, the base stage of second triode are connected with the processor, second triode
Emitter stage be connected with the 5th driving power, the grid of the colelctor electrode of second triode and second FET
Connection, the source ground of second FET, the drain electrode of second FET are connected with the negative pole of the diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117194.3A CN107733039A (en) | 2017-11-13 | 2017-11-13 | Detection means and method for the charger of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117194.3A CN107733039A (en) | 2017-11-13 | 2017-11-13 | Detection means and method for the charger of automobile |
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| Publication Number | Publication Date |
|---|---|
| CN107733039A true CN107733039A (en) | 2018-02-23 |
Family
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| CN201711117194.3A Pending CN107733039A (en) | 2017-11-13 | 2017-11-13 | Detection means and method for the charger of automobile |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404215A (en) * | 2019-08-13 | 2020-07-10 | 美律电子(深圳)有限公司 | Charging device |
| CN111452640A (en) * | 2020-04-13 | 2020-07-28 | 北京和信瑞通电力技术股份有限公司 | Electrical charging gun homing detection circuit and method |
| CN111835050A (en) * | 2019-04-22 | 2020-10-27 | 北京小米移动软件有限公司 | Charging terminal, method and device |
-
2017
- 2017-11-13 CN CN201711117194.3A patent/CN107733039A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835050A (en) * | 2019-04-22 | 2020-10-27 | 北京小米移动软件有限公司 | Charging terminal, method and device |
| CN111404215A (en) * | 2019-08-13 | 2020-07-10 | 美律电子(深圳)有限公司 | Charging device |
| CN111452640A (en) * | 2020-04-13 | 2020-07-28 | 北京和信瑞通电力技术股份有限公司 | Electrical charging gun homing detection circuit and method |
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