CN108790928A - A kind of charging electric motor vehicles rifle using standard power supply base - Google Patents
A kind of charging electric motor vehicles rifle using standard power supply base Download PDFInfo
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- CN108790928A CN108790928A CN201810857598.4A CN201810857598A CN108790928A CN 108790928 A CN108790928 A CN 108790928A CN 201810857598 A CN201810857598 A CN 201810857598A CN 108790928 A CN108790928 A CN 108790928A
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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
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- 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
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Abstract
A kind of charging electric motor vehicles rifle using standard power supply base includes with cable connection for control protective unit on plug, cable and vehicle plug；It is characterized in that：It is described for plug be it is multiple；The multiple respective output of plug is detected through control protective unit on cable, if voltage is same or similar, i.e. parallel connection is access to vehicle plug.Even if charging gun power supply base used is the socket that standard GB/T 1002 and GB2099.1 provide rated current, specified charging current that can also be larger works, and easy to use and cost is relatively low.
Description
Technical field
The present invention relates to a kind of charging electric motor vehicles rifle using standard power supply base, IPC classification can belong to H01R
13/00 or/and H01R 27/00.
Background technology
The prior art uses standard GB/T 1002《Household and similar applications Single-phase plug Socket Type, basic parameter and
Size》And GB2099.1《Household and similar applications plugs and sockets first part：General Requirement》Defined power supply base it is electronic
Automobile charging gun, and cost easy to use compared to the charging pile of fixed setting is relatively low, but the rated current of power supply base is by mark
Quasi- regulation is not more than 16A, limits the specified charging current of charging gun and the charging time is made to be difficult to shorten.
In relation to term and common sense, in addition to this specification indicates, 20234.1 GB/T according to national standards《Electric car conduction
Chargeable connection device part 1 General Requirement》,GB/T 18487.1《Electric car conduction charging system part 1 is general to be wanted
It asks》, GB1002 and GB2099.1 and《Mechanical engineering manual》With《Motor engineering handbook》(write group, China Machine Press
Second edition in 1997).
Invention content
The technical problem to be solved by the present invention is to：It is proposed a kind of charging electric motor vehicles using standard power supply base
Rifle can have larger specified charging current, easy to use and cost relatively low.
The present invention solve the technical problem technical solution be：It is a kind of to be filled using for electric vehicle of standard power supply base
Electric rifle includes with cable connection for control protective unit on plug, cable and vehicle plug；It is characterized in that：
--- it is described for plug be it is multiple；
--- the multiple respective output of plug is detected through control protective unit on cable, if voltage is same or similar, i.e.,
Parallel connection is access to vehicle plug.
Wherein, it is identical that described " voltage is same or similar " refers to any moment instantaneous voltage value, or because of circuit differences or survey
The reasons such as amount error cause testing result different, but no more than the 5% of supply voltage amplitude.
The charging gun can be such that the specified total current of input increases with multitap by electricity, and the output of each plug is voltage is identical or phase
In parallel when close, the specified total current exported thereafter also increases.Therefore, even if power supply base used is 1002 He of standard GB/T
GB2099.1 provides the socket of rated current, and specified charging current that can also be larger works, and easy to use and cost is relatively low.
The modular design of the technical solution is：Control protective unit includes that the multiple plug respectively exports electricity on the cable
The detection circuit of pressure, the comparison circuit of these voltages and the comparison result control each to be switched on or switched off the multiple plug
It is switched from each control of output, and the output-parallel of each control switch, if these voltages are same or similar, each control switch
It connects, otherwise disconnects.
Further one of design is for it：Control protective unit further includes that the multiple plug respectively exports electricity on the cable
The detection circuit of stream, if these output current overcurrent, the switch disconnects；The design makes the control switch have overcurrent concurrently
Defencive function, thus save cost.
Its further design second is that：Control protective unit further includes being inserted into power to the multiple plug on the cable
The detection of outlet status and the control detected according to these, including：The number of power supply base is inserted into the detection of quantity according to each plug
Amount, the charge power or current signal being arranged based on respective numbers are sent out to charged vehicle, thus realize the charging control
System automation；Or/and each plug is inserted into the detection pulled away after power supply base, and after thering is plug to be inserted into power supply base
When being pulled away, each control switch disconnects, and gets shocked when can prevent human body from touching the hanging bolt of plug for pulling away socket.
Specific design containing above-mentioned design is that control protective unit includes on the cable；
--- multiple output relays, control respectively it is multiple for the respective output of plug, the control of these relays
The output-parallel of contact is access to vehicle plug；
--- MCU module, with plug-in and multiple I/O ports, including each detection mouth and each output relay of control
Each outlet of break-make；
--- multiple plug-in detection modules, input are respectively access to the output for plug, and output is respectively access to MCU module one
Whether plug-in detection mouth each is inserted into power supply base for checking for plug；
--- multiple over-current detection modules, input are access to each current sensor sampled in one for the output of plug,
Output be respectively access to one over-current detection mouth of MCU module, for check each output for plug whether overcurrent；
--- instantaneous voltage difference detection module is respectively access to the output for plug with multiple input, and output is access to
The phase-detection mouth of MCU module, for checking whether each output voltage for plug is identical；
--- electro-detection module is pulled out, with multiple input, is respectively access to the output for plug, output is access to MCU moulds
Whether block pulls out electro-detection mouth, for being pulled away after checking each insertion power supply base for plug；
MCU module is controlled the break-make of each output relay by the input and plug-in of each detection mouth.
The modular design specifically designed is：The multiple is 2, i.e.,：
--- 2 for plug --- first is for plug and second for plug；
--- 2 plug-in detection modules --- the first plug-in detection module and the second plug-in detection module；
--- 2 over-current detection modules --- the first over-current detection module and the second over-current detection module；
--- 2 output relays --- the first output relay and second output relay；
The plug-in of MCU module 1 includes the following steps：
S1：First plug-in detection module and the second plug-in detection module respectively to first for plug and second for plug
The two roads plug is detected, if only one plug insertion power supply base makes the plug electrification all the way, makes to be not inserted into for electric mortiser
That output relay all the way of seat keeps off-state, and the letter to charge with basic output power is sent out to charged vehicle
Number, and execute step S4；If two plugs are inserted into power supply base so that two road plugs charge, S2 is thened follow the steps；
S2：Instantaneous voltage difference detection module pair first for plug and second for plug output carry out instantaneous voltage it is poor
Detection, if two-way voltage is different, MCU module makes two output relays disconnect concurrent warning message, and then lasting detection should
Two-way voltage until two-way voltage is identical, then executes step S3；
S3：It is sent out to charged vehicle to improve the signal of output power charging, and is performed simultaneously step S4, S5；
S4：First over-current detection module and the second over-current detection module detect first for plug and second for electric mortiser respectively
The output current of head, if it is more than load current value that output current, which occurs, MCU module 1 makes two output relays disconnect, stops filling
Electricity；Otherwise, it repeats step S4 to continue to charge, until charging complete.
S5：Pull out electro-detection module at the same detection first for plug and second for plug state, if detecting arbitrary
Plug is pulled out all the way, and MCU module makes two output relays disconnect；Otherwise, step S5 is repeated, until charging complete.
Technical solutions and effects of the present invention will be further described in conjunction with attached drawing in a specific embodiment.
Description of the drawings
Fig. 1 is the 1st embodiment duplicate supply plug charging gun power supply system main assembly block schematic illustration of the invention.
Fig. 2 is the 1st embodiment duplicate supply plug charging gun of the invention and vehicle socket catenation principle schematic diagram.
Fig. 3 is the plug-in detection module principle schematic of various embodiments of the present invention charging gun.
Fig. 4 is the over-current detection module principle schematic diagram of various embodiments of the present invention charging gun.
Fig. 5 is the relay catenation principle schematic diagram of various embodiments of the present invention charging gun.
Fig. 6 is the instantaneous voltage difference detection module principle schematic of various embodiments of the present invention charging gun.
Fig. 7 is that various embodiments of the present invention charging gun pulls out electro-detection module principle schematic diagram.
Fig. 8 is the plug-in detection module circuit diagram of various embodiments of the present invention charging gun.
Fig. 9 is the over-current detection modular circuit schematic diagram of various embodiments of the present invention charging gun.
Figure 10 is the instantaneous voltage difference detection module circuit diagram of various embodiments of the present invention charging gun.
Figure 11 is that various embodiments of the present invention charging gun pulls out electro-detection modular circuit schematic diagram.
Figure 12 is the 1st embodiment duplicate supply plug charging gun power supply program control flow journey schematic diagram of the invention.
Figure 13 is the 2nd embodiment three of the invention for plug charging gun power supply system main assembly block schematic illustration.
Figure 14 is the 2nd embodiment three of the invention for plug charging gun power supply program control flow journey schematic diagram.
Specific implementation mode
The embodiment of the present invention is on a kind of basis of charging electric motor vehicles rifle using standard power supply base of the prior art
On improve, it using IPC code H01R13 or H01R27 and using charging gun is title in patent number that the structure inherited is visible
According to the file retrieved in library.
1st embodiment
1st embodiment duplicate supply plug charging gun power supply system main assembly frame of the invention is as shown in Figure 1, it is mainly wrapped
It includes：
A) first for plug 51 and second for plug 61, be according to rated voltage as defined in GB1002 and GB2099.1
250V and the two poles of the earth rated current 16A grounded plug are obtained mains supply for being inserted into standard power supply base, are access to and are filled with cable
Electric gun main body；
B) vehicle plug 2 is located at one end of charging gun main body for connecting vehicle socket；
C) control protective unit on cable is located in charging gun main body, including is modularly designed with each related functional circuits
One circuit board, these circuits include mainly；
--- the first output relay 54 and the second output relay 64 control first and are supplied for plug 51 and second respectively
The output of plug 61.The output-parallel of the contact of two relay controls is access to vehicle plug 2；
--- 1 (proposed model of MCU module：TMS32F28035), with plug-in and multiple I/O ports, including each inspection
Survey each I/O port of the break-make of mouth (the mainly ports AD) and the first output relay 54 of control and the second output relay 64；
--- the first plug-in detection module 52, input are access to the first output for plug 51, and output is access to MCU module
1 the first plug-in detection mouth, for checking whether first be inserted into power supply base for plug 51；
--- the second plug-in detection module 62, input are access to the second output for plug 61, and output is access to MCU module
1 the second plug-in detection mouth, for checking whether second be inserted into power supply base for plug 61；
--- the first over-current detection module 53, input are access to the Current Mutual Inductance sampled in first for the output of plug 51
Device, output are access to the first over-current detection mouth of MCU module 1, for check first for plug 51 output whether overcurrent；
--- the second over-current detection module 63, input are access to the Current Mutual Inductance sampled in second for the output of plug 61
Device, output are access to the second over-current detection mouth of MCU module 1, for check second for plug 61 output whether overcurrent；
--- instantaneous voltage difference detection module 3, secondly road input is access to first for plug 51 and second for electric mortiser respectively
First 61 output, output are access to the phase-detection mouth of MCU module 1, for inspection first for plug 51 and second for plug
Whether 61 output voltage is identical；
--- electro-detection module 4 is pulled out, secondly road input is access to first for plug 51 and second for plug 61 respectively
Output, what output was access to MCU module 1 pulls out electro-detection mouth, for checking that first is inserted into for plug 51 or the second for plug 61
Whether pulled away after power supply base.
MCU module 1 controls the first output relay 54 and second by the input of each detection mouth and plug-in and exports relay
The break-make of device 64 the result is that：
--- charging gun for 61 one of plug for plug 51 and second by first when being only inserted into power supply base so that
The exportable charging current corresponding with single plug rated current of vehicle plug 2；When the output, which does not meet user, to be needed, user
Two plug can be inserted into power supply base simultaneously, the output of two plug is independently in parallel, keeps vehicle plug 2 exportable
Charging current significantly improves.
Such as Fig. 2, the vehicle plug of charging gun is inserted into vehicle socket implementation charging gun and is connect with charging vehicle, except from two
For three poles of plug：1-L, 1-N, 2-L, 2-N are with the power supply of PE in 1., 2., 3. place is connected to the vehicle-mounted of charged vehicle and fills
Motor is provided outside power supply, further include communication signal CC, CP from MCU module 1 in 4., 5. place's connection, it is above-mentioned to supply according to being inserted into
The plug quantity of electrical socket exports vehicle plug 2 adjustment of charging current, i.e., by the communication by the vehicle of charged vehicle
Control device is realized.The communication of charging gun and charged vehicle is completed by CP signals.R1, S1, RC collectively constitute connection in Fig. 2
Confirm that circuit, D1, S2, R2, R3 are used for generating the CP signals under different conditions.GBT18487.1 according to national standards, charging gun
Vehicle plug be inserted into vehicle socket, that is, when being in half-connection or full connection status, the plug-in of MCU module make charging gun from
The ends CP continuously send pwm signal toward charged vehicle end, and the wherein duty ratio of pwm signal can be carried corresponding to charging gun
The maximum charging current or charge power of confession, MCU module 1 is through in the first plug-in detection module 52 or the second plug-in detection module 62
If detecting, only one plug is inserted into power supply base, that is, the duty ratio for adjusting the pwm signal at the ends CP is 21.67%, is filled
The charge power that the controller of vehicle of electric car is arranged for this response is 3KW (the specified charging current 13A of charging gun at this time)；If
Detect that two plugs are inserted into power supply base, then the duty ratio for adjusting the pwm signal at the ends CP is 43.33%, is arranged at this time
Charge power is 6KW (the specified charging current 26A of charging gun at this time).
Such as Fig. 3, the first plug-in detection module 52 and the second plug-in detection module 62 respectively to the voltage of corresponding plug L lines into
Row detection：If plug is not inserted into power supply base, the voltage on plug L lines is zero；When plug is inserted into power supply base, plug L lines
Charge, the voltage signal is rectified, divide and be isolated/follow circuit, then filtered circuit filtering clutter after be input to MCU moulds
The ports AD of block 1 are read out.Such as the physical circuit of the first plug-ins of Fig. 8 detection module 52：Diode D1 is to coming from the first power supply
The voltage signal rectification for the L lines that plug 51 exports；Resistance R1 and R2 composition bleeder circuit divides the voltage signal after rectification
Pressure；Operational amplifier U1 is the isolation circuit followed, and output is sent to the first plug-in inspection of MCU module 1 after capacitance C1 filtering
Mouth is surveyed to read.The physical circuit can also use existing IC on the market, such as the XC6126 of TOREX companies, refer to its product
Specification.The physical circuit of second plug-in detection module 62 is similar.
Such as Fig. 4, the first over-current detection module 53 and the second over-current detection module 63 are obtained using current transformer and pass through L lines
Current signal, voltage signal and signal are then converted by IV and amplified, the ports AD of MCU module 1 are input to after filtered
It is read out.Fig. 9 is the physical circuit of the first over-current detection module 53, wherein current transformer J1 measures first for plug
51 output L lines on by electric current；Resistance R3 is I/V converter part, and the electric current of current transformer J1 leading-out terminals 1,2 is believed
Number it is converted into voltage signal；Operational amplifier U2 and resistance R4, R5 collectively constitute positive scaling circuit, by the voltage signal
Amplification；The first over-current detection mouth that MCU module 1 is sent to by the filtered signals of capacitance C2 is read.The physical circuit can also
Using existing IC on the market, such as the STMC109 of Shenzhen Cong Chuan companies, its product description is referred to.Second over-current detection mould
The physical circuit of block 63 is similar.
As the specific connection of Fig. 5, each output relay are：First exports the first output relay 54 of series connection for plug 51
Contact be followed by toward vehicle plug, coil control terminal connects the transistor of 1 first I/O port of MCU module driving；Second for electric mortiser
The contact of first 61 output the second output relay 64 of series connection is followed by toward vehicle plug, and coil control terminal connects MCU module 1 second
The transistor of I/O port driving.When MCU module 1 these I/O ports output high level, the transistor turns driven, be controlled by after
The coil energized action of electric appliance, the contact closure of relay make the output for plug 51 or/and for plug 61 be inserted with vehicle
Head is connected；When exporting low level, transistor cutoff makes the output for plug 51 or/and for plug 61 and vehicle plug point
From.
Such as Fig. 6, the 1-L lines and second that the detection of instantaneous voltage difference detection module 3 first is exported for plug 51 are for plug
Voltage between the 2-L lines of 61 outputs, amplifies through differential amplifier circuit first, and the port that MCU module 1 is inputted after filtering is read
It takes：Two-way voltage it is identical (including it is close, both refer to that frequency is identical, and amplitude is same or similar with phase, i.e., any moment is instantaneously electric
The difference of pressure value is zero or no more than the 5% of supply voltage amplitude, similarly hereinafter) when, the output amplitude of differential amplifier circuit is in specified value
It is interior, minimum zero；When different, the output of differential amplifier circuit is more than specified value.Figure 10 is the tool of instantaneous voltage difference detection module 3
Body circuit, the voltage differential signal of the 2-L lines exported for plug 61 for the 1-L lines of the output of plug 51 and second from first,
After the differential amplifier circuit amplification of operational amplifier U3 and resistance R6, R7, R8, R9, R10 composition and capacitor C3 filtering, send
It is read out to 1 phase-detection mouth of MCU module.The physical circuit can also use existing IC on the market, such as ADI companies
AD8302 refers to its product description.
Such as Fig. 7, it is to make the first ground protection line 1-PE and second exported for plug 51 for electric mortiser to pull out electro-detection module 4
It is first 61 output ground protection line 2-PE respectively through a resistance connection systematically, detection 1-PE and 2-PE its just like A points to systematically
Resistance judge whether plug is pulled out：When two plugs are all inserted into power supply base, 1-PE and 2-PE pass through for electric mortiser
The ground wire PE of seat is joined together, and A points are Re1//Re2 to resistance value systematically；When any one plug is pulled out, 1-
PE is disconnected with 2-PE so that A points are Re1 to resistance value systematically, detect interruption of the signal transmission to MCU module 1 at this time
Mouthful, execute interruptive command, control of export all relays (refer to the first output relay 54 and the second output relay 64, under
It resets together), disconnects the output of two plugs toward the connection of vehicle plug.Figure 11 is the physical circuit for pulling out electro-detection module 4, figure
Middle Re indicate from 1-PE i.e. first for plug 51 ground protection line (A points in Fig. 7) to resistance systematically, Re and resistance
R11, R12, R13, R14 and operational amplifier U4 collectively constitute a comparator, using Vref as the datum of comparison circuit,
When Re is different resistance values, the signal of U4 outputs is also different；C4 is filter capacitor, it is filtered after signal be transmitted directly to
The electro-detection mouth that pulls out of MCU module 1 is read out.The physical circuit can also use other resistance measuring circuits for belonging to common sense.
The plug-in of MCU module 1 includes the following steps：
S1：First plug-in detection module 52 and the second plug-in detection module 62 are supplied for plug 51 and second first respectively
The two roads plug of plug 61 is detected, if only one plug insertion power supply base makes the plug electrification all the way, makes not insert
Enter power supply base that output relay all the way and keep off-state, adjust the ends CP pwm signal enable controller of vehicle with
Basic output power charging, and execute step S4；If two plugs are inserted into power supply base so that two-way plug charges, execute
Step S2；
S2：Instantaneous voltage difference detection module pair first carries out instantaneous electricity for plug 51 and second for the output of plug 61
Pressure differential detection, if two-way voltage is different, MCU module 1 makes all relays disconnect concurrent warning message, and then lasting detection should
Two-way voltage until two-way voltage is identical, then executes step S3；
S3：Adjusting the ends CP pwm signal enables controller of vehicle improve output power charging, and is performed simultaneously step S4, S5；
S4：First over-current detection module 53 and the second over-current detection module 63 detect first for plug 51 and second respectively
For the output current of plug 61, if it is more than load current value that output current, which occurs, MCU module 1 makes all relays disconnect, stops
Only charge；Otherwise, it repeats step S4 to continue to charge, until charging complete.
S5：The state of electro-detection module 4 while detection first for plug 51 and second for plug 61 is pulled out, if detecting
Arbitrarily plug is pulled out all the way, and MCU module 1 makes all relays disconnect；Otherwise, step S5 is repeated, until charging complete.
When specific execution above-mentioned steps, plug-in is carried out to the first output for plug 51 and second for plug 61 first
Detection, judges whether they are inserted into power supply base electrification：If only wherein plug charges testing result all the way, by basic output work
Rate (3KW) starts to charge up；It is charged if testing result is two-way plug, instantaneous voltage difference detection is carried out to two-way voltage, with
Judge whether two-way voltage is identical：If identical, then press and improve output power (6KW) and start to charge up；If difference, then institute is disconnected
There are relay, concurrent warning message then persistently to detect the two-way voltage, until voltage is identical, then it is 6KW to adjust output power
It starts to charge up.Hereafter, over-current detection is carried out to the output of two-way plug at any time and pulls out electro-detection.It is judged whether there is when over-current detection
Electric current is excessive：If the determination result is YES, so that all relays is disconnected, stop charging, flow terminates；If judging result is no, after
Continuous charging.It detects that any road plug is pulled out when if pulling out electro-detection, all relays is made to disconnect, stop charging, flow terminates；
If not detecting and pulling out electricity condition, continues charging and over-current detection is carried out to the output of two-way plug and pulls out electro-detection.The control
Process processed is referring to Figure 12.
2nd embodiment
2nd embodiment three of the invention is as shown in figure 13 for plug charging gun power supply system main assembly frame, is the 1st
On the basis of embodiment two-way power supply, increases the power supply of third road and its detect and control, mainly third is for plug 71, the
Three plug-in detection modules 72, third over-current detection module 73 and third output relay 74.Third plug-in detection module 72 and
Three over-current detection modules 73 are connected with MCU module 1, and third output relay 74 is respectively with third for plug 71, MCU module
1, vehicle plug 2 connects.The connection of charging gun and vehicle socket, based on Fig. 2, the output for only increasing third for plug passes through
Connection of the contact of third output relay 74 toward vehicle plug.
2nd embodiment charging gun in use, can first for plug 51, second for plug 61 and third for plug
Any of 71, two or 3 insertion power supply bases.At this point, the first plug-in detection module 52, the second plug-in detection module 62
Plug-in detection carried out to this three output for plug respectively with third plug-in detection module 72, the person that has been inserted into power supply base to
MCU module 1 sends detection signal, and the duty ratio of the pwm signal at the ends similar double plug charging gun adjustment CP changes charge power
The plug-in of method, MCU module so that, when only receiving a detection signal, adjustment charging gun is sent out to charged vehicle
It is 3KW that charge power, which is arranged, in signal；When receiving two detection signals, adjustment charge power is 6KW；Receive three detection letters
Number when, adjustment charge power be 9KW (the specified charging current 39A of charging gun at this time).
The realization principle of third plug-in detection module 72 is identical as the first plug-in detection module 51, can refer to Fig. 3, Fig. 8, uses
Whether plug in for plug 71 in detection third.The realization of third over-current detection module 73 and the first over-current detection module 53
Principle is identical, can refer to Fig. 4, Fig. 9, the electric current exported for plug 71 for detecting third whether overrate.Third is defeated
Connection and the working method for going out relay 74 are identical as the first output relay 54, can refer to Fig. 5, and third is exported for plug 71
L lines its contact of connecting be access to vehicle plug, control terminal is connected with MCU module 1, when MCU detects abnormality, makes institute
There is relay (referring to the first output relay 54, the second output relay 64 and third output relay 74, similarly hereinafter) disconnection, implements
Protection.
The instantaneous voltage difference detection module 3 of 2nd embodiment is increased on the basis of 1 embodiment, reference Fig. 6, Figure 10,
Respectively to first for plug 51, second for plug 61 and third for setting between 71 three of plug output two-by-two as schemed
Instantaneous voltage difference detection module shown in 6.MCU module 1 respectively according to the first plug-in detection module 52, the second plug-in module 62,
The signal that third plug-in detection module 72 detects judges that specifically which has been powered for plug, and starts above-mentioned instantaneous voltage difference inspection
It surveys.For example, when detecting that second, third has been charged for plug, then instantaneous voltage difference detection is carried out to the output of two plug,
If the two-way voltage is identical, connects the second output relay 64 and third output relay 74 charges to vehicle；If no
Together, then two relay will not be also turned on.
The electro-detection module 4 of pulling out of 2nd embodiment is increased on the basis of 1 embodiment, and with reference to Fig. 7, Figure 11.Example
Such as, similar figure is set for plug 71 with third for plug 61 for plug 71 or the second with third for plug 51 to first
Electro-detection module is pulled out shown in 7, and using the physical circuit of similar Figure 11.
The electro-detection module of pulling out of Fig. 7 is realized with porch triggering, i.e. with the change triggers MCU interruption of output level
Defencive function only can just carry out pulling out electro-detection when two plug all plug-ins.To pull out electro-detection in 2nd embodiment increases to
Three tunnels, when only any one plug plug-in without pulling out electro-detection, this is the 1st kind of situation.When arbitrary two plug plug-ins
When can carry out pulling out electro-detection, including 3 kinds of situations：First and second plugs plug, second and third plug plug, first and third
Plug is plugged.In addition, can also carry out pulling out electro-detection when three road plugs are all plugged.It can be summarized as 5 kinds of situations, needle in summary
To this 5 kinds of situations, the detection circuit of three similar Fig. 7 is set, three interruptions that output is connected respectively in MCU module 1 are touched
Send out mouth.This three alignment detection circuit has the two kinds of outputs of high level and low level, that is, shares 8 kinds of output combinations, and selection is wherein more closed
5 kinds of suitable output combinations indicate 5 kinds of above-mentioned situations, are unfolded to describe below for one such scheme, actual implementation is unlimited
In this programme.
Assuming that the down trigger mode of MCU is by the edging trigger that low transition is high level, subordinate list 1 shows three tunnels
The detection circuit output level under 5 kinds of different situations respectively.When carrying out pulling out electro-detection, when MCU module 1 detects this three tunnel
The arbitrary signal intensity having all the way from low transition for high level in output, can all trigger interruption, keep all relays disconnected
It opens.Specifically, when only any one plug is plugged power supply, system is in situation 1, and three tunnels output at this time is all high electricity
It is flat, when yet another or two plugs are plugged, other situations will be become from situation 1.As can be seen from the table, either from
1 saltus step of situation is any situation in addition, and not having low level becomes the output of high level；It is inserted when there is any two plug
When upper power supply, system is in one kind in situation 2, situation 3 or situation 4, will carry out pulling out electro-detection at this time.When any one is inserted
Head is pulled out, and will become situation 1.As can be seen from the table, no matter from any in these three situations situation 1 is jumped to, all
Have at least export all the way from low transition be high level.In addition, when three plugs are all plugged power supply, system is in feelings
Condition 5 can also carry out pulling out electro-detection, when any one plug is pulled out, will become one kind in situation 2, situation 3 or situation 4.
As can be seen from the table, no matter jumped to from situation 5 any in these three situations, can all have and at least export all the way from low electricity
Flat saltus step is high level.If extracting two plugs simultaneously, situation 1 will be jumped to from situation 5, equally at least exported all the way
From low transition to high level.
Subordinate list 1：5 kinds of situations of electro-detection are pulled out in 2nd embodiment
| Situation | Situation describes | 1 tunnel exports | 2 tunnels export | 3 tunnels export |
| 1 | Any one plug is plugged | High level | High level | High level |
| 2 | First, second plug is plugged | High level | Low level | High level |
| 3 | Second, third plug is plugged | High level | Low level | Low level |
| 4 | The first, third plug is plugged | Low level | High level | High level |
| 5 | Three plugs are all plugged | Low level | Low level | High level |
As above-mentioned, the control flow of the 2nd embodiment is shown in Figure 14, and the control flow compared to Figure 12 is increased near right branch
Road.Processing when tri- road plugs of branch Shi Dui charge implements the detection of instantaneous voltage difference to the output of three road plugs first, if
Arbitrary two road voltage differs, and all relays is made to disconnect；If three road voltages are identical, further increase charge power and opened for 9KW
Begin to charge, electro-detection, over-current detection and their control flow are pulled out in implementation.
There can be following design modification：
1, similar to from the 1st embodiment duplicate supply plug charging gun to the 2nd embodiment three for the circuit of plug charging gun
And the variation of control, 4 charging gun for plug or more for plug can be further designed, charging gun is further increased
Specified charging current.
2, for the rated current of plug may be individually 6A, 10A；It can also be used without the two poles of the earth plug of ground connection,
With easy to use.
3, for the cable connection of plug and charging gun main body, device coupler mode may be used, by national standard
GB17465.1《Household and similar applications device coupler part 1：General Requirement》.4, it is protection against electric shock, between the contact of relay
Gap and creepage distance need to meet the requirement for reinforcing insulation.To reduce requirement to relay and more reliable, former each circuit is by one
One contact of a relay carries out break-make control, can be changed to two relays each one by coil serial or parallel connection while energization
A contact series carry out break-make control.
5, except use MCU module with plug-in control in addition to, when circuit is fairly simple, can also relay logic circuit into
Row control.
6, the current measurement of over-current detection module can also use the other current sensors of such as Hall sensor.
7, the standard plug with creepage protection function respectively can be used for plug, it can safer and simplified reinforcement protection against electric shock
The board design of protection.
8, it is connected to charged vehicle transmission and the relevant charge power setting of plug quantity and is believed by vehicle plug, socket
Number, such as bluetooth wireless transmission method can also be changed to.
9, each voltage signal detection, such as instantaneous voltage difference detection module can also use Alternative Voltage Converter (to recommend
Model：MIK-DJU-450, output：0~2V).
Claims (6)
1. a kind of charging electric motor vehicles rifle using standard power supply base includes with cable connection for being controlled on plug, cable
Protective device processed and vehicle plug；It is characterized in that：
--- it is described for plug be it is multiple；
--- the multiple respective output of plug is detected through control protective unit on cable, if voltage is same or similar, i.e., in parallel
It is access to vehicle plug.
2. charging gun according to claim 1, it is characterised in that：Control protective unit includes the multiple plug on the cable
The respective detection circuit of output voltage, the comparison circuit of these voltages and the comparison result control described to be switched on or switched off
Each control switch that multiple plugs respectively export, and the output-parallel of each control switch, it is described if these voltages are same or similar
Each control switch connection, otherwise disconnects.
3. charging gun according to claim 2, it is characterised in that：Control protective unit further includes the multiple inserts on the cable
The detection circuit of the respective output current of head, if these output current overcurrent, the switch disconnects.
4. charging gun according to claim 2, it is characterised in that：Control protective unit further includes to the multiple on the cable
Plug is inserted into the detection of power supply base state and the control according to these detections, including：The detection of quantity is inserted into according to each plug
The quantity of power supply base sends out the charge power or current signal being arranged based on respective numbers to charged vehicle；Or/
With each plug is inserted into the detection pulled away after power supply base, and when being pulled away after having plug insertion power supply base, described
Each control switch disconnects.
5. according to charging gun described in claim 3 or claim 4, it is characterised in that：Control protective unit includes on the cable；
--- multiple output relays control multiple for the respective output of plug, the contact of these relays control respectively
Output-parallel be access to vehicle plug；
--- MCU module, with plug-in and multiple I/O ports, including each detection mouth and the break-make for controlling each output relay
It is each one outlet；
--- multiple plug-in detection modules, input are respectively access to the output for plug, and output is respectively access to one plug-in of MCU module
Whether detection mouth each is inserted into power supply base for checking for plug；
--- multiple over-current detection modules, input are access to each current sensor sampled in one for the output of plug, output
Respectively be access to one over-current detection mouth of MCU module, for check each output for plug whether overcurrent；
--- instantaneous voltage difference detection module is respectively access to the output for plug with multiple input, and output is access to MCU
The phase-detection mouth of module, for checking whether each output voltage for plug is identical；
--- electro-detection module is pulled out, with multiple input, is respectively access to the output for plug, output is access to MCU module
Electro-detection mouth is pulled out, for whether being pulled away after checking each insertion power supply base for plug；
MCU module is controlled the break-make of each output relay by the input and plug-in of each detection mouth.
6. charging gun according to claim 5, it is characterised in that：The multiple is 2, i.e.,：
--- 2 for plug --- first is for plug and second for plug；
--- 2 plug-in detection modules --- the first plug-in detection module and the second plug-in detection module；
--- 2 over-current detection modules --- the first over-current detection module and the second over-current detection module；
--- 2 output relays --- the first output relay and second output relay；
The plug-in of MCU module 1 includes the following steps：
S1：First plug-in detection module and the second plug-in detection module respectively to first for plug and second for plug this two
Road plug is detected, if only one plug is inserted into power supply base and makes this plug charges all the way, make to be not inserted into power supply base that
Output relay all the way keeps off-state, and the signal to charge with basic output power is sent out to charged vehicle, and
Execute step S4；If two plugs are inserted into power supply base so that two road plugs charge, S2 is thened follow the steps；
S2：Instantaneous voltage difference detection module pair first for plug and second for plug output carry out instantaneous voltage difference inspection
It surveys, if two-way voltage differs or close, MCU module makes two output relays disconnect concurrent warning messages, then continues
The two-way voltage is detected, until two-way voltage is same or similar, then executes step S3；
S3：It is sent out to charged vehicle to improve the signal of output power charging, and is performed simultaneously step S4, S5；
S4：First over-current detection module and the second over-current detection module detect first for plug and second for plug respectively
Output current, if it is more than load current value that output current, which occurs, MCU module 1 makes two output relays disconnect, and stops charging；
Otherwise, it repeats step S4 to continue to charge, until charging complete.
S5：Pull out electro-detection module at the same detection first for plug and second for plug state, if detect it is arbitrary all the way
Plug is pulled out, and MCU module makes two output relays disconnect；Otherwise, step S5 is repeated, until charging complete.
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| CN2018108474381 | 2018-07-27 | ||
| CN201810847438 | 2018-07-27 |
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| CN201810857598.4A Active CN108790928B (en) | 2018-07-27 | 2018-07-31 | Charging gun for electric automobile using standard power supply socket |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110297453A (en) * | 2019-07-17 | 2019-10-01 | 湖南联智桥隧技术有限公司 | Intelligent-induction controls socket and intelligent control method |
| CN111845392A (en) * | 2019-04-29 | 2020-10-30 | 台达电子企业管理（上海）有限公司 | Portable charging equipment and charging connector |
| CN113270915A (en) * | 2021-05-11 | 2021-08-17 | 中航光电科技股份有限公司 | Be suitable for domestic alternating-current charging device of IT electric wire netting |
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| CN209257895U (en) * | 2018-07-27 | 2019-08-16 | 汉宇集团股份有限公司 | A kind of charging electric motor vehicles rifle using standard power supply base |
| CN113135108B (en) * | 2020-07-30 | 2022-08-19 | 长城汽车股份有限公司 | Charging control method and system and vehicle |
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Also Published As
| Publication number | Publication date |
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| CN108790928B (en) | 2024-02-27 |
| CN209257895U (en) | 2019-08-16 |
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