CN109327053A - A kind of non-on-board charger and its control method - Google Patents
A kind of non-on-board charger and its control method Download PDFInfo
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- CN109327053A CN109327053A CN201810833327.5A CN201810833327A CN109327053A CN 109327053 A CN109327053 A CN 109327053A CN 201810833327 A CN201810833327 A CN 201810833327A CN 109327053 A CN109327053 A CN 109327053A
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- relay
- input circuit
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- bms
- power supply
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000007600 charging Methods 0.000 claims description 75
- 230000005611 electricity Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 11
- 238000004891 communication Methods 0.000 description 8
- 230000004044 response Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H02J7/0026—
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- H02J7/022—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of non-on-board chargers, controller connect with the BMS of electric car to be charged respectively and is connect by interlock circuit with the switch of the output state of control power module, can identify the operational voltage level of BMS and generate the control signal for controlling power module output voltage grade voltage identical with operational voltage level, so as to realize BMS operational voltage level automatic identification and non-on-board charger accessory power supply automatic switchover；Meanwhile interlock circuit can also reach the purpose for preventing the output end of power module to be shorted according to the working condition of control signal coordinating switch.As it can be seen that switching or manually selecting accordingly corresponding accessory power supply without the manual closing or opening of user using this non-on-board charger, user's operation is not only simplified, but also it is possible to prevente effectively from the output end because of power module is shorted.In addition, there is effect as above the invention also discloses a kind of control method of non-on-board charger.
Description
Technical field
The present invention relates to new-energy automobile field, in particular to a kind of non-on-board charger and its control method.
Background technique
Electric car BMS is the important tie for connecting vehicle mounted dynamic battery and electric car, in December, 2015 charger
Industry new nation standard " GB/T 18487.1-2015 electric car conduction charging system part 1: General Requirement " carry out with
Before, electric car BMS working power disunity is broadly divided into DC12V and two kinds of DC24V.
Since the electric car BMS of two kinds of operational voltage levels is existed simultaneously, so, energy is needed inside non-on-board charger
Export the auxiliary source BMS of two kinds of different voltages grades.In the prior art, according to non-on-board charger 12V or 24V accessory power supply
Switching mode is classified, and two classes can be divided into.One kind is: need user according to self-demand manual closing it is corresponding switch with
Corresponding accessory power supply inside non-on-board charger is connected, when user needs the electronic vapour for being DC12V for BMS operational voltage level
When vehicle charges, then it is closed corresponding switch, connects the 12V accessory power supply inside non-on-board charger；When user needs for BMS work
When making the electric car charging that voltage class is DC24V, then it is closed corresponding switch, connects the 24V inside non-on-board charger
Accessory power supply, it is complicated for operation, influence user experience.Also, this kind of non-on-board chargers are not interlocked, if user grasps
It is improper to make, then is easy to generate failure because the output end of power module is shorted.It is another kind of to be: to need user according to self-demand
The accessory power supply needed by human-computer interaction interface selection, when user needs the electronic vapour for being DC12V for BMS operational voltage level
When vehicle charges, then 12V accessory power supply is selected to export；When user needs the electric car for being DC24V for BMS operational voltage level to fill
When electric, then 24V accessory power supply is selected to export, it is not smart enough to still need to user's manual operation, also, artificial selection is also easy to appear mistake
Accidentally, user experience is influenced.
Therefore, how to simplify the switching mode of non-on-board charger 12V and 24V accessory power supply to promote user experience is this
The current technical issues that need to address of field technical staff.
Summary of the invention
The object of the present invention is to provide a kind of non-on-board charger and its control methods, can simplify non-on-board charger
The switching mode of 12V and 24V accessory power supply is to promote user experience.
In order to solve the above technical problem, the present invention provides a kind of non-on-board charger, including non-on-board charger sheet
Body, further includes:
Power module；
It is connect with the power module, the switch of the output state for controlling power module；
It is connect with the BMS of electric car to be charged, the operational voltage level of the BMS and generates control signal for identification
Controller；
It is connected respectively with the controller and the switch, the work for the switch according to the control signal coordinating
Interlock circuit of the state to prevent the output end of the power module to be shorted；
Wherein, the control signal is for controlling the power module output voltage grade and the operational voltage level phase
Same voltage.
Preferably, the power module is specifically made of two-way 12V power supply；
Anode of first anode of the two-way 12V power supply as the power module；The first of the two-way 12V power supply
Second anode of cathode and the two-way 12V power supply is shorted, and is connect with the first end of first switch；The two-way 12V power supply
The second cathode and second switch first end connect；The second end of the first switch and the second end of the second switch connect
It connects, and the cathode as the power module；
Wherein, the switch includes the first switch and the second switch.
Preferably, the interlock circuit specifically includes the first relay and the second relay, and the switch specifically includes
Third relay and the 4th relay；
The first end of input circuit in first relay, the movable contact of first switch, institute in first relay
The movable contact for stating first switch in the first end of input circuit and second relay in the second relay accesses power supply electricity
Pressure；The second end of input circuit is connect with the first output end of the controller in first relay；First relay
The normally opened contact of first switch is connect with the movable contact of second switch in second relay in device, in second relay
The normally-closed contact of second switch is connect with the first end of input circuit in the third relay；It is inputted in second relay
The second end in circuit is connect with the first output end of the controller, in second relay normally opened contact of first switch with
The movable contact connection of second switch in first relay, in first relay normally-closed contact of second switch with it is described
The first end connection of input circuit in 4th relay, in the third relay second end of input circuit and the described 4th after
The second end of input circuit is grounded in electric appliance.
It preferably, further include first diode, the second diode, third diode and the 4th diode；
The cathode of the first diode is connect with the first end of input circuit in first relay, and the described 1st
The anode of pole pipe is connect with the second end of input circuit in first relay；The cathode of second diode and described the
The first end connection of input circuit, the anode of second diode and input circuit in second relay in two relays
Second end connection, the cathode of the third transistor is connect with the first end of input circuit in the third relay, described
The cathode of 4th triode is connect with the second end of input circuit in the 4th relay, the anode of the third transistor and
The anode of 4th triode is grounded.
Preferably, the power module is specifically made of 12V power supply and 24V power supply, and the interlock circuit specifically includes
Five relays and the 6th relay, and the switch specifically includes the 7th relay and the 8th relay；
The first end of input circuit in 5th relay, the first end of input circuit and institute in the 6th relay
It states the movable contact switched in the 6th relay and accesses supply voltage, the second end of input circuit and institute in the 5th relay
State the first output end connection of controller；It is switched in the movable contact and the 6th relay switched in 5th relay
Normally-closed contact connects, the first end of input circuit in the normally opened contact and the 7th relay switched in the 5th relay
Connection；The second end of input circuit is connect with the second output terminal of the controller in 6th relay；Described 6th after
The normally opened contact switched in electric appliance is connect with the first end of input circuit in the 8th relay, defeated in the 7th relay
The second end of input circuit is grounded in the second end of entry loop and the 8th relay.
It preferably, further include the 5th diode, the 6th diode, the 7th diode and the 8th diode；
The cathode of 5th diode is connect with the first end of input circuit in the 5th relay, and the described 5th 2
The second end connection of input circuit in 5th relay described in the anode of pole pipe；The cathode and the described 6th of 6th diode
The first end connection of input circuit in relay, the anode of the 6th diode and input circuit in the 6th relay
Second end connection；The cathode of 7th diode is connect with the first end of input circuit in the 7th relay；Described
The cathode of eight diodes is connect with the first end of input circuit in the 8th relay, the anode of the 7th diode and institute
The anode for stating the 8th diode is grounded.
In order to solve the above-mentioned technical problem, the present invention also provides a kind of non-on-board charger control method, comprising:
Whether detection charging gun connect with the charge port of electric car to be charged；
If it is, the operational voltage level of the BMS of the identification electric car to be charged；
When the operational voltage level is first voltage grade, voltage class and institute in the non-on-board charger are connected
The connection between the identical power supply of first voltage grade and the charging gun is stated, and keeps voltage etc. in the non-on-board charger
Grade and the connection between the identical power supply of second voltage grade and the charging gun disconnect；
When the operational voltage level is the second voltage grade, voltage class in the non-on-board charger is connected
Connection between power supply identical with the second voltage grade and the charging gun, and keep electric in the non-on-board charger
The connection between grade and the identical power supply of the first voltage grade and the charging gun is pressed to disconnect.
Preferably, the operational voltage level of the BMS of the identification electric car to be charged specifically includes:
Control voltage class is that the power supply of the first voltage grade is the electric car to be charged charging, and to described
BMS sends the first handshake message；
If receiving the second handshake message that the BMS is replied in the first preset time, it is determined that the work of the BMS
Voltage class is the first voltage grade；
If second handshake message can not be received in first preset time, it is determined that the work of the BMS
Voltage class is the second voltage grade.
Preferably, after the operating voltage of the determination BMS is the second voltage grade, further includes:
Control voltage class is that the power supply of the second voltage grade is the electric car to be charged charging, and to described
BMS sends third handshake message；
If receiving the 4th handshake message that the BMS is replied in the second preset time, enter the control voltage
Grade power supply identical with the operational voltage level is the step of electric car to be charged charges；
If the 4th handshake message can not be received in second preset time, stop being the electricity to be charged
Electrical automobile charging, and carry out fault alarm.
A kind of non-on-board charger provided by the invention, controller connect respectively and are led to the BMS of electric car to be charged
It crosses interlock circuit to connect with the switch for the output state for controlling power module, can identify the operational voltage level of BMS and generation
For controlling the control signal of power module output voltage grade voltage identical with operational voltage level, so as to realize
The automatic identification of the operational voltage level of BMS and the automatic switchover of non-on-board charger 12V and 24V accessory power supply；Meanwhile it interlocking
Circuit can also reach the purpose for preventing the output end of power module to be shorted according to the working condition of control signal coordinating switch.It can
See, using this non-on-board charger, in the charge port for connecting charging gun and electric car to be charged and then is not necessarily to user hand
Dynamic closing or opening switchs or manually selects accordingly corresponding accessory power supply, not only simplifies user's operation, can promote use
Family experience, but also it is possible to prevente effectively from the case where damaging non-on-board charger because of the output end of power module short circuit generation.
In addition, there is effect as above the present invention also provides a kind of control method of non-on-board charger.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings.
Fig. 1 is the principle that a kind of non-on-board charger provided in an embodiment of the present invention is an electric car charging to be charged
Figure；
Fig. 2 is the original that another non-on-board charger provided in an embodiment of the present invention is an electric car charging to be charged
Reason figure；
Fig. 3 is the principle that another non-on-board charger provided in an embodiment of the present invention is two automobile chargings to be charged
Figure；
Fig. 4 is a kind of flow chart of the control method of non-on-board charger provided in an embodiment of the present invention；
Fig. 5 is the flow chart of the control method of another non-on-board charger provided in an embodiment of the present invention；
Fig. 6 is the flow chart of the control method of another non-on-board charger provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art under the premise of not making the creative labor, it is obtained it is all its
His embodiment, belongs to the scope of the present invention.
The object of the present invention is to provide a kind of control method of non-on-board charger and non-on-board chargers, can simplify non-
The switching mode of Vehicular charger 12V and 24V accessory power supply is to promote user experience.
In order to make those skilled in the art better understand technical solution of the present invention, with reference to the accompanying drawing and it is embodied
The present invention is described in further detail for mode.
Fig. 1 is the principle that a kind of non-on-board charger provided in an embodiment of the present invention is an electric car charging to be charged
Scheme, in Fig. 1, L indicates that firewire, N indicate that zero curve, PE indicate ground wire.As shown in Figure 1, non-on-board charger provided in this embodiment
(do not show in figure) including non-on-board charger ontology, further includes:
Power module 11；
It is connect with power module 11, the switch 12 of the output state for controlling power module 11；
Connect with the BMS 13 of electric car to be charged, for identification the operational voltage level of BMS 13 and generate control letter
Number controller 14；
Connect respectively with controller 14 and switch 12, for according to control signal coordinating switch 12 working condition to prevent
The interlock circuit 15 that the output end of power module 11 is shorted；
Wherein, control signal is for controlling 11 output voltage grade of power module voltage identical with operational voltage level.
It should be noted that power module 11 may include a power supply or multiple power supplys.For example, power module 11 can be with
DC12V can be exported including one but also exports the power supply of DC24V；Power module 11, which also may include one, to be exported
The power supply of DC12V and one can only export the power supply of DC24V.
Switch 12 is connect with power module 11, for controlling the output state of power module 11, can specifically be divided into 2 groups,
Every 1 group connect including at least the power supply that can export DC12V in 12,1 group of switch 12 of a switch and power module 11 to control
Whether the DC12V output end of power supply connected to it is connected with charging gun connects, can in another 1 group of switch 12 and power module 11
Output DC24V power supply connection with control power supply connected to it DC24V output end whether with charging gun connect connect.Example
Such as, when power module 11 can export DC12V but also export DC24V power supply including one, 1 group of switch 12 is set to power supply
Between DC12V output end and charging gun, another 1 group of switch 12 is set between the DC24V output end of power supply and charging gun；Work as power supply
When module 11 can only export DC24V power supply including a power supply that can only export DC12V and one, 1 group of switch 12 is set to only
It can export between the output end and charging gun of the power supply of DC12V, another 1 group of switch 12 is set to the power supply that can only export DC24V
Between output end and charging gun.
Controller 14 is responsible for the division state with the BMS 13 of electric car to be charged communication and control switch 12；It is to be charged
The BMS 13 of electric car is responsible for all data of the battery pack of monitoring electric car to be charged and is communicated with controller 14；
Power module 11 and the cooperation of switch 12 realize output DC12V and export the switching of the accessory power supply of DC24V.
Interlock circuit 15 is connect with controller 14 and switch 12 respectively, for being opened according to the control signal coordinating of controller 14
The working condition of pass 12 can be prevented due to the output end of power module 11 is shorted with preventing the output end of power module 11 to be shorted
The case where burning out non-on-board charger internal circuit generation achievees the purpose that the reliability for enhancing non-on-board charger.Then correspond to
, the connection of controller 14 and switch 12 specifically: controller 14 is connect by interlock circuit 15 with switch 12.It is being embodied
In, interlock circuit 15 can be made of logic NAND gate, can also be made of relay hardware etc., the present invention does not limit this
It is fixed.It is, of course, understood that interlocking can be further increased on software, controller 14 is made to control power module 11 not
Low level is not exported simultaneously with output end, will not be powered simultaneously for BMS 13 with the different electrical power guaranteed in power module 11, into
One step ensures the safe and reliable of this system.
In practical applications, controller 14 can be known when detecting that charger is connect with the charge port of automobile to be charged
The operational voltage level of the BMS 13 of electric car not to be charged is generated further according to the operational voltage level recognized for controlling
The control signal of 11 output voltage grade of power module voltage identical with operational voltage level；Interlock circuit 15 receives control
After the control signal that device 14 is sent, coordinate the working condition of switch 12, by the on-off of different switches 12, guarantees power module
In the case that 11 output end is not shorted, so that 11 output voltage grade of power module voltage identical with operational voltage level.
Specifically, when operational voltage level is first voltage grade, by coordinating the working condition of each switch 12, off-board fill is connected
Connection in motor between voltage class and the identical power supply of first voltage grade and charging gun, and keep in non-on-board charger
Connection between voltage class and the identical power supply of second voltage grade and charging gun disconnects；When operational voltage level is the second electricity
When pressing grade, by coordinating the working condition of each switch 12, voltage class and second voltage grade in non-on-board charger are connected
Connection between identical power supply and charging gun, and keep voltage class in non-on-board charger identical with first voltage grade
Connection between power supply and charging gun disconnects.
In conclusion a kind of non-on-board charger provided in this embodiment, controller respectively with electric car to be charged
It BMS connection and is connect by interlock circuit with the switch of output state of control power module, can identify the operating voltage of BMS
Grade simultaneously generates control signal for controlling power module output voltage grade voltage identical with operational voltage level, thus
It can be realized the automatic identification of the operational voltage level of BMS and the automatic switchover of non-on-board charger 12V and 24V accessory power supply；
Meanwhile interlock circuit can also prevent the output end of power module to be shorted according to the working condition arrival of control signal coordinating switch
Purpose.As it can be seen that using this non-on-board charger, in the charge port for connecting charging gun and electric car to be charged and then
Corresponding accessory power supply is switched or is manually selected accordingly without the manual closing or opening of user, not only simplifies user's operation,
User experience can be promoted, but also it is possible to prevente effectively from damages non-on-board charger because the output end of power module is shorted
It happens.
As shown in Figure 1, in order to reduce the cost of off-board power supply machine and save its inner space, based on the above embodiment,
As a preferred embodiment, power module 11 is specifically made of two-way 12V power supply 110；
Anode of the first anode V1+ of two-way 12V power supply 110 as power module 11；The first of two-way 12V power supply 110
Second anode V2+ of cathode V1- and two-way 12V power supply 110 is shorted, and is connect with the first end of first switch K3-1；Two-way 12V
Second cathode V2- of power supply 110 is connect with the first end of second switch K4-1；The second end and second switch of first switch K3-1
The second end of K4-1 connects, and the cathode as power module 11；
Wherein, switch 12 includes first switch K3-1 and second switch K4-1.
In the present embodiment, the power supply using two-way 12V power supply 110 as power module 11, by by two-way 12V power supply
110 the first cathode V1- and the second anode V2+ of two-way 12V power supply 110 are shorted, and can be closed as first switch K3-1,
When second switch K4-1 is disconnected, power module 11 exports DC12V；When second switch K4-1 is closed, and first switch K3-1 is disconnected,
Power module 11 exports DC24V；Both cooperated the folding of different switches 12 that can realize non-on-board charger by a power supply
The switching of 12V and 24V accessory power supply reduces the number of power supply, therefore, can reduce off-board without using two power supplys
The cost of power supply machine and its inner space of saving.
Further it will be understood that power module 11 can both use doubleway output, can also be exported using single channel, this
Invention is not construed as limiting this.
As shown in Figure 1, in order to further enhance the reliability of non-on-board charger, based on the above embodiment, as one kind
Preferred embodiment, the case where specifically composition two-way 12V power supply 110 for power module 11, interlock circuit 15 is specifically wrapped
The first relay and the second relay are included, and switch 12 specifically includes third relay and the 4th relay；
The first end of input circuit K1-2 in first relay, the movable contact of first switch K1-11, in the first relay
The movable contact of first switch K2-11 accesses power supply electricity in the first end of input circuit K2-2 and the second relay in two relays
Pressure；The second end of input circuit K1-2 is connect with the first output end of controller 14 in first relay；In first relay
The normally opened contact of one switch K1-11 is connect with the movable contact of second switch K2-12 in the second relay, second in the second relay
The normally-closed contact of switch K2-12 is connect with the first end of input circuit K3-2 in third relay；It is inputted back in second relay
The second end of road K2-2 is connect with the first output end of controller 14, the normally opened contact of first switch K2-11 in the second relay
Connect with the movable contact of second switch K1-12 in the first relay, in the first relay the normally-closed contact of second switch K1-12 with
The first end connection of input circuit K4-2 in 4th relay, in third relay the second end of input circuit K3-2 and the 4th after
The second end of input circuit K4-2 is grounded in electric appliance.
It should be noted that in the present embodiment, K3-1 is the first switch in third relay, and the first end of K3-1 is the
The movable contact of first switch in three relays, the second end of K3-1 are the normally opened contact of first switch in third relay；K4-1
For the first switch in the 4th relay, the first end of K4-1 is the movable contact of first switch in the 4th relay, the of K4-1
Two ends are the normally opened contact of first switch in the 4th relay.The size of the supply voltage of the input circuit of cut-in relay is with energy
Subject to the conducting for enough guaranteeing relay.
Interlock circuit 15 is made of relay and is used as switch 12 can be to avoid due to electric signal interference using relay
Malfunction is generated, the reliability of non-on-board charger can be further enhanced.It is, of course, understood that being made of relay
It is only a kind of preferred embodiment that interlock circuit 15 and use relay, which are used as switch 12, rather than unique embodiment,
In practical applications, contactor, metal-oxide-semiconductor etc. can also be selected to constitute interlock circuit 15 and/or selection contactor, metal-oxide-semiconductor etc. to make
For switch 12, this is not limited by the present invention.
In a particular application, when the working power of BMS 13 is DC12V, the first output end output of master controller 14 is low
Level, second output terminal export high level, and the input circuit K1-2 of the first relay is powered, first switch in the first relay
K1-11 is connected with normally opened contact, and second switch K1-12 and normally-closed contact disconnect in the first relay, the input of the second relay
Circuit K2-2 is disconnected, and second switch K2-12 and normally-closed contact are connected in the second relay, and supply voltage passes through in the first relay
The normally-closed contact of second switch K2-12 in the normally opened contact of first switch K1-11, the second relay, to the defeated of third relay
Entry loop K3-2 power supply, and then switch K3-1 is connected with normally opened contact in third relay, the DC12V power supply in power module 11
The working power of DC12V is provided to BMS 13.If leading to the second output terminal of controller 14 at this time due to software fault etc.
Also become low level, the input circuit K2-2 of the second relay is charged, first switch K2-11 and normally opened contact in the second relay
It connecting, second switch K2-12 and normally-closed contact disconnect in the second relay, but due to second switch K1- in the first relay
12 disconnect with normally-closed contact, so the input circuit K4-2 of the 4th relay still can not be charged, and at the same time, due to second after
Second switch K2-12 and normally-closed contact disconnect in electric appliance, thus the input circuit K3-2 of third relay can not also obtain it is electric, because
This, the module that can cut off the power 11 is to the DC12V working power provided of BMS 13 or the power supply of DV24V, to not only ensure that
DC12V power supply and DC24V power supply in power module 11 will not provide the damage that working power causes BMS 13 to BMS 13 simultaneously
Bad failure also ensures that power module 11 will not provide the damage failure that inappropriate power supply causes BMS 13 to BMS 13,
Avoid the power supply of different output voltage grades output end link together caused by non-on-board charger burning fault.
In order to make those skilled in the art better understand technical solution provided by the invention, below with reference to using single electricity
The non-on-board charger of source module is described in detail for the process for motor automobile to be charged charging.
After non-on-board charger is connected to electric car charging interface by charging gun, controller 14 can detect link position
Whether intact, if not being reliably connected, directly prompt is reconnected.If being reliably connected, controller 14 can by logical process,
Low level, the first relay and the conducting of third relay, the first anode V1+ of power module 11 and the are exported in the first output end
One cathode V1- exports the power supply of DC12V by the contact of third relay, to provide to the BMS 13 of electric car to be charged
DC12V working power, and simultaneously by sending CHM handshake message to the BMS 13 of electric car to be charged.If default first
Time internal controller 14 receives the BHM handshake message that electric car volume BMS 13 to be charged is replied, then BMS 13 has been waken up,
The working power for proving BMS 13 is DC12V.If not receiving the BHM of the reply of BMS 13 in the first preset time internal controller 14
Handshake message, then for controller 14 by logical process, second output terminal exports low level, while the high electricity of the first output end output
Flat, the second relay and the conducting of the 4th relay, the first relay and the second relay disconnect, the first anode of power module 11
V1+ and the second cathode V2 is powered by the 4th relay to electric car BMS 13 to be charged, and simultaneously to electronic vapour to be charged
Vehicle BMS 13 sends CHM handshake message.If shaking hands report in the BHM that the second preset time internal controller 14 receives the reply of BMS 13
Text, then BMS 13 has been waken up at this time, it was demonstrated that the working power of BMS 13 is DC24V.If default second by above-mentioned steps
Time internal controller 14 does not receive the BHM handshake message of the reply of BMS 13 also, then proves non-on-board charger or to be charged
There are also other failures not to exclude for electric car, needs manually to be checked, and carries out fault alarm.
As shown in Figure 1, each relay damages relay because moment, inverse electromotive force was excessively high in coil blackout in order to prevent
Device coil (input circuit), based on the above embodiment, as a preferred embodiment, non-on-board charger further includes first
Diode D1, the second diode D2, third diode D3 and the 4th diode D4；
The cathode of first diode D1 is connect with the first end of input circuit K1-2 in the first relay, first diode D1
Anode connect with the second end of input circuit K1-2 in the first relay；In the cathode and the second relay of second diode D2
The first end of input circuit K2-2 connects, the second end of input circuit K2-2 in the anode and the second relay of the second diode D2
Connection, the cathode of third transistor D3 are connect with the first end of input circuit K3-2 in third relay, the 4th triode D4's
Cathode is connect with the second end of input circuit K4-2 in the 4th relay, the anode of third transistor D3 and the 4th triode D4's
Anode is grounded.
Diode has unilateral conduction can be effective by each diodes in parallel at the both ends of each relay input circuit
Prevent each relay in coil blackout, the generation because moment, inverse electromotive force was excessively high damages relay coil the case where.
Fig. 2 is the original that another non-on-board charger provided in an embodiment of the present invention is an electric car charging to be charged
Reason figure.As shown in Fig. 2, in order to further enhance the reliability of non-on-board charger, based on the above embodiment, as a kind of preferred
Embodiment, power module 11 is specifically made of 12V power supply 111 and 24V power supply 112, and interlock circuit 15 specifically includes the 5th
Relay and the 6th relay, and switch 12 specifically includes the 7th relay and the 8th relay；
The first end of input circuit K5-2 in 5th relay, in the 6th relay input circuit K6-2 first end and
The movable contact of switch K6-1 accesses supply voltage in six relays, the second end and control of input circuit K5-2 in the 5th relay
First output end of device 14 processed connects；In 5th relay the movable contact of switch K5-1 in the 6th relay switch K6-1 it is normal
Closed contact connects, and the first end of input circuit K7-2 connects in the normally opened contact and the 7th relay of switch K5-1 in the 5th relay
It connects；The second end of input circuit K6-2 is connect with the second output terminal of controller 14 in 6th relay；It is opened in 6th relay
The normally opened contact for closing K6-1 is connect with the first end of input circuit K8-2 in the 8th relay, input circuit in the 7th relay
The second end of input circuit K8-2 is grounded in the second end of K7-2 and the 8th relay.
In the present embodiment, K7-1 is the normal open switch in the 7th relay, and K8-1 is normally opened opening in the 8th relay
It closes；The size of the supply voltage of the input circuit of cut-in relay is subject to the conducting that can guarantee relay.
In a particular application, when the working power of BMS 13 is DC12V, the first output end of master controller exports low electricity
Flat, the input circuit K5-2 of the 5th relay is powered, and switch K5-1 is connected with normally opened contact in the 5th relay, and supply voltage is logical
Cross the normally-closed contact of switch K6-1 in the 6th relay, R1, in the 5th relay switch K5-1 normally opened contact to the 7th relay
The input circuit K7-2 of device powers, and then switch K7-1 is connected with normally opened contact in the 7th relay, in power module 11
DC12V power supply provides the working power of DC12V to BMS 13.If leading to controller 14 at this time due to software fault etc.
Second output terminal also becomes low level, the input circuit K6-2 electrification of the 6th relay, in the 6th relay switch K6-1 with it is normal
Contact connection is opened, is disconnected with normally-closed contact, and then the input circuit K8-2 electrification of the 8th relay, is switched in the 8th relay
K8-1 and normally opened contact are connected, and the DC24V power supply in power module 11 gives BMS 13 to provide 24V and controls power supply, but at this time by
It is disconnected in the 6th relay switch K6-1 and normally-closed contact, the control power supply of the input circuit K7-2 of the 7th relay can be cut off,
And then the 12V working power that the DC12V power supply in module 11 of cutting off the power is provided to BMS 13, to ensure that power module 11
In DC12V power supply and DC24V power supply will not provide working power to BMS 13 simultaneously and cause the damage failure of BMS 13, also keep away
Exempted from the power supply of different output voltage grades output end link together caused by non-on-board charger burning fault.
As shown in Fig. 2, each relay damages relay because moment, inverse electromotive force was excessively high in coil blackout in order to prevent
Device coil (input circuit), based on the above embodiment, as a preferred embodiment, non-on-board charger further includes the 5th
Diode D5, the 6th diode D6, the 7th diode D7 and the 8th diode D8；
The cathode of 5th diode D5 is connect with the first end of input circuit K5-2 in the 5th relay, the 5th diode D5
The 5th relay of anode in input circuit K5-2 second end connection；The cathode of 6th diode D6 with it is defeated in the 6th relay
The first end of entry loop K6-2 connects, and the second end of input circuit K6-2 connects in the anode and the 6th relay of the 6th diode D6
It connects；The cathode of 7th diode D7 is connect with the first end of input circuit K7-2 in the 7th relay；The yin of 8th diode D8
Pole is connect with the first end of input circuit K8-2 in the 8th relay, the anode of the 7th diode D7 and the sun of the 8th diode D8
Extremely it is grounded.
Diode has unilateral conduction can be effective by each diodes in parallel at the both ends of each relay input circuit
Prevent each relay in coil blackout, the generation because moment, inverse electromotive force was excessively high damages relay coil the case where.
In addition, it is necessary to explanation, section Example of the invention, for charging for an electric car to be charged into
Row be described in detail, the control method and non-on-board charger for not representing non-on-board charger provided by the invention be only applicable to for
The case where one electric car to be charged charging, it is only necessary to increase similar interlock circuit 15 and corresponding switch 12, it can be also
The case where suitable for charging for two, three, four and more electric cars to be charged.As shown in figure 3, Fig. 3 is the present invention
Another non-on-board charger that embodiment provides is the schematic diagram of two automobiles to be charged chargings, entire charging process with it is above-mentioned
Process for an electric car charging to be charged is similar, and the present invention repeats no more.
A kind of non-on-board charger provided by the invention is described in detail above, the present invention also provides a kind of bases
The control method of the non-on-board charger of the non-on-board charger provided by any of the above-described embodiment, due to the off-board charging
The embodiment of the control method part of machine mutually correlates with the embodiment of non-on-board charger part, so, non-on-board charger
Control method part embodiment can with reference to the description of the embodiment of non-on-board charger part, for identical part,
Hereafter repeat no more.
Fig. 4 is a kind of flow chart of the control method of non-on-board charger provided in an embodiment of the present invention.The present embodiment mentions
The control method of the non-on-board charger of confession, based on non-on-board charger provided by any of the above-described embodiment, as shown in figure 4,
The control method includes:
S40: whether detection charging gun connect with the charge port of electric car to be charged, if it is, S41 is entered step,
If it is not, then repeating this step.
S41: the operational voltage level of the BMS of electric car to be charged is identified.
S42: when operational voltage level is first voltage grade, voltage class and the first electricity in non-on-board charger are connected
The connection between the identical power supply of grade and charging gun is pressed, and keeps voltage class and second voltage grade in non-on-board charger
Connection between identical power supply and charging gun disconnects.
S43: when operational voltage level is second voltage grade, voltage class and the second electricity in non-on-board charger are connected
The connection between the identical power supply of grade and charging gun is pressed, and keeps voltage class and first voltage grade in non-on-board charger
Connection between identical power supply and charging gun disconnects.
After electric car to be charged is flame-out, the BMS of electric car to be charged is also electric under, supplies in no external power supply
When, the BMS of electric car to be charged can not work, and also just it is even more impossible to the controllers with non-on-board charger to be communicated,
Therefore, in step s 40, whether the charging gun for first detecting non-on-board charger connect with the charge port of electric car to be charged.
If the charge port of charging gun and electric car to be charged is successfully connected, step S41 can be carried out, identifies electronic vapour to be charged
The operational voltage level of the BMS of vehicle, and if charging gun is connect not successfully with the charge port of electric car to be charged, illustrate nothing
Electric car to be charged, which needs to charge, or the connection of charging gun and charge port is unreliable to be filled for electric car to be charged
Electricity repeats step S40.It is, of course, understood that in order to promote user experience, while repeating step S40,
Non-on-board charger can be made to prompt this state of " charging gun is not connected with charge port ", the present invention does not make this
It limits.
For step S41, main purpose is to identify the operational voltage level of BMS.Specifically, identification process
May is that control voltage class be the power supply of first voltage grade is first electric car to be charged charging, at the same attempt with wait fill
The BMS of electric automobile is communicated, if receiving the response message of BMS, illustrates that first voltage grade is the work of BMS
Voltage class determines that the operating voltage of BMS is first voltage grade；And if the response message of BMS can not be received,
Illustrate second voltage grade for the operational voltage level or non-on-board charger failure of BMS or electric car failure to be charged.
At this point, if the case where ignoring non-on-board charger failure and electric car failure to be charged, can directly determine the work of BMS
Voltage is second voltage grade.Certainly, in order to promote the reliability of non-on-board charger, can also control voltage class is second
The power supply of voltage class continues as electric car charging to be charged, while attempting to be communicated with the BMS of electric car to be charged,
If receiving the response message of BMS, illustrate that second voltage grade is the operational voltage level of BMS, determines the work electricity of BMS
Pressure is first voltage grade.Wherein, first voltage grade and second voltage grade be respectively DC12V (or DC24V) and
DC24V (or DC12V).The controller of non-on-board charger can be led to the BMS with charging electric automobile by CAN bus
Letter can also be communicated using other communication modes, and such as RS485, this is not limited by the present invention.
After determining the operational voltage level of BMS, step S42 or step S43 is executed, directly controlling voltage class is
The power supply of the operational voltage level of BMS is that band charging electric automobile is charged.Specifically, for step S42,
While connecting the connection in non-on-board charger between voltage class and the identical power supply of first voltage grade and charging gun, energy
Enough synchronous connections disconnected in non-on-board charger between voltage class and the identical power supply of second voltage grade and charging gun；It is right
For step S43, in connecting non-on-board charger voltage class power supply identical with second voltage grade and charging gun it
Between connection while, can synchronize disconnect non-on-board charger in voltage class power supply identical with first voltage grade with fill
Connection between electric rifle.By executing step S42 and step S43 for electric car to be charged charging, that is, joined mutually
Lock function, so that each power supply of power module can only have one to connect with charging gun and connect in non-on-board charger in synchronization
It connects, multiple power supplys can be effectively prevented and connect connection with charging gun simultaneously and the case where each power supply short circuit occur, it can be further
Promote the reliability of non-on-board charger.
As it can be seen that using the control method of non-on-board charger provided by the invention, when needing to fill for electric car to be charged
When electric, user by electric car to be charged it is flame-out after, direct filling the charging gun of off-board charging and electric car to be charged
Power port connects the automatic switchover that non-on-board charger 12V and 24V accessory power supply can be realized, and manually selects again without user non-
The accessory power supply of Vehicular charger, simplifies user's operation, can promote experience.Moreover, because being manually selected again without user
The accessory power supply of non-on-board charger, so will not occur making the defeated of the power module of non-on-board charger because of user misoperation again
The case where outlet is shorted and damages non-on-board charger.
Fig. 5 is the flow chart of the control method of another non-on-board charger provided in an embodiment of the present invention.Such as Fig. 5 institute
Show, in order to simplify BMS operational voltage level identification process, based on the above embodiment, as a preferred embodiment,
Step S41 is specifically included:
S50: control voltage class is that the power supply of first voltage grade is electric car charging to be charged, and is sent to BMS
First handshake message.
Wherein, the first handshake message refers to that the controller of non-on-board charger is held to what the BMS of electric car to be charged was sent
Hand message is specifically as follows CHM handshake message.
After the power supply that control voltage class is first voltage grade is electric car charging to be charged, if BMS
Operational voltage level is first voltage grade really, then is equivalent to BMS and has obtained suitable electric energy supply, at this point, controller is just
It can be communicated with BMS.Therefore, in step s 50, controller by BMS send the first handshake message attempt and BMS into
Row communication.
S51: if receiving the second handshake message of BMS reply in the first preset time, it is determined that the operating voltage of BMS
Grade is first voltage grade.
Wherein, the first preset time is preset, if can not receive the second of BMS reply in the first preset time
Handshake message, then it is assumed that even if continuing waiting for receiving, can not also receive the second handshake message of BMS reply；Second shakes hands report
Text is corresponding with the first handshake message, after referring to that the BMS of electric car to be charged receives the first handshake message, to Vehicular charger
The handshake message that controller is sent, when the first handshake message is specially CHM handshake message, the second handshake message is specifically as follows
BHM handshake message.
In specific implementation, first voltage grade is preferably DC12V, and second voltage grade is preferably DC24V.Certainly, may be used
With understanding, first voltage grade is preferably DC12V, and second voltage grade is preferably DC24V, is not to say that first voltage etc.
Grade is only DC12V, and second voltage grade is only DC24V, and in practical applications, first voltage grade may be DC24V,
Second voltage grade may be DC12V.However, it is noteworthy that first is default when first voltage grade is DC24V
Time should be shorter as far as possible, and the BMS for being DC12V to avoid operational voltage level is for a long time DC24V's by voltage class
The case where power voltage supply, occurs.
If receiving the second handshake message of BMS reply in the first preset time, illustrate controller and BMS success
Communication, BMS have obtained suitable supply voltage, i.e. the first voltage grade operational voltage level that is BMS.
S52: if the second handshake message can not be received in the first preset time, it is determined that the operational voltage level of BMS
For second voltage grade.
If the second handshake message of BMS reply can not be received in the first preset time, illustrate controller and BMS
Communication failure, BMS obtain that supply voltage is improper, i.e. the first voltage grade operational voltage level that is not BMS, then assert second
Voltage class is the operational voltage level of BMS.
In the present embodiment, it is electric car to be charged charging that controller, which only needs to control a kind of power supply, can be determined
The operational voltage level of BMS, identification process are more simple.
Fig. 6 is the flow chart of the control method of another non-on-board charger provided in an embodiment of the present invention.Such as Fig. 6 institute
Show, in order to promote the reliability of non-on-board charger, is based on second embodiment of the invention, embodiment party as one preferred
Formula, after executing the step S52, further includes:
S60: control voltage class is that the power supply of second voltage grade is electric car charging to be charged, and is sent to BMS
Third handshake message.
Wherein, third handshake message refers to that the controller of non-on-board charger is held to what the BMS of electric car to be charged was sent
Hand message is specifically as follows CHM handshake message.
After the power supply that control voltage class is second voltage grade is electric car charging to be charged, if BMS
Operational voltage level is second voltage grade really, then is equivalent to BMS and has obtained suitable electric energy supply, at this point, controller is just
It can be communicated with BMS.Therefore, in step S60, controller by BMS send third handshake message attempt and BMS into
Row communication.
S61: the 4th handshake message that BMS reply whether is received in the second preset time is judged, if when second is default
In receive the 4th handshake message of BMS reply, then S43 is entered step, if the can not be received in the second preset time
Four handshake message, then enter step S62.
Wherein, the second preset time is preset, can be identical as the first preset time, can also with first it is default when
Between it is different.If the 4th handshake message of BMS reply can not be received in the second preset time, then it is assumed that even if continuing waiting for
It receives, can not also receive the 4th handshake message of BMS reply；4th handshake message is corresponding with third handshake message, refers to wait fill
After the BMS of electric automobile receives third handshake message, the handshake message sent to the controller of Vehicular charger works as third
When handshake message is specially CHM handshake message, the 4th handshake message is specifically as follows BHM handshake message.
If receiving the 4th handshake message of BMS reply in the second preset time, illustrate controller and BMS success
Communication, BMS have obtained suitable supply voltage, that is, further determined that second voltage grade is the operational voltage level of BMS.
S62: stop charging for electric car to be charged, and carry out fault alarm.
If the 4th handshake message of BMS reply can not be received in the second preset time, illustrate controller and BMS
Communication failure, the supply voltage that BMS has been obtained is improper, i.e. there may be error, the second electricity for the conclusion that execution step S62 is obtained
Pressure grade may not be the operational voltage level of BMS, at this time, it may be possible to non-on-board charger failure or electric car to be charged event
Barrier.Therefore, in step S62, by stop be electric car to be charged charging can to avoid when second voltage grade really not
When being the operational voltage level of BMS the case where damage band charging electric automobile, and fault alarm is carried out simultaneously, may remind the user that
Fault condition can debug in time so as to user.
In the present embodiment, in the case where determining first voltage grade not is the operational voltage level of BMS, by into one
Step demonstrate,prove second voltage grade whether the operational voltage level for being BMS, be able to ascend the reliability of non-on-board charger, Jin Erti
Rise user experience.Also, the present embodiment can also prompt user malfunction situation, further promote user experience.
The control method and non-on-board charger of a kind of non-on-board charger provided by the present invention have been carried out in detail above
It is thin to introduce.Each embodiment is described in a progressive manner in specification, and each embodiment, which stresses, is and other implementations
The difference of example, the same or similar parts in each embodiment may refer to each other.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
It should also be noted that, in the present specification, such as first and second etc relational terms are used merely to one
A entity or operation are perhaps operated with another entity and are distinguished without necessarily requiring or implying these entities or behaviour
There are any actual relationship or orders between work.Moreover, the terms "include", "comprise" or its any variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of element not only includes that
A little elements, but also other elements including being not explicitly listed either further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (9)
1. a kind of non-on-board charger, including non-on-board charger ontology, which is characterized in that further include:
Power module；
It is connect with the power module, the switch of the output state for controlling the power module；
Connect with the BMS of electric car to be charged, for identification the operational voltage level of the BMS and generate control signal control
Device processed；
It is connected respectively with the controller and the switch, the working condition for the switch according to the control signal coordinating
With the interlock circuit for preventing the output end of the power module to be shorted；
Wherein, the control signal is identical with the operational voltage level for controlling the power module output voltage grade
Voltage.
2. non-on-board charger according to claim 1, which is characterized in that the power module is specifically by two-way 12V electricity
Source composition；
Anode of first anode of the two-way 12V power supply as the power module；First cathode of the two-way 12V power supply
It is shorted with the second anode of the two-way 12V power supply, and is connect with the first end of first switch；The of the two-way 12V power supply
The connection of the first end of two cathode and second switch；The second end of the first switch is connect with the second end of the second switch,
And the cathode as the power module；
Wherein, the switch includes the first switch and the second switch.
3. non-on-board charger according to claim 2, which is characterized in that the interlock circuit specifically includes the first relay
Device and the second relay, and the switch specifically includes third relay and the 4th relay；
The first end of input circuit in first relay, the movable contact of first switch, described in first relay
The movable contact of first switch accesses supply voltage in the first end of input circuit and second relay in two relays；Institute
The second end of input circuit in the first relay is stated to connect with the first output end of the controller；In first relay
The normally opened contact of one switch is connect with the movable contact of second switch in second relay, and second opens in second relay
The normally-closed contact of pass is connect with the first end of input circuit in the third relay；Input circuit in second relay
Second end is connect with the first output end of the controller, the normally opened contact of first switch and described the in second relay
The movable contact connection of second switch in one relay, in first relay normally-closed contact of second switch with the described 4th after
The first end of input circuit connects in electric appliance, in the third relay in the second end and the 4th relay of input circuit
The second end of input circuit is grounded.
4. non-on-board charger according to claim 3, which is characterized in that further include first diode, the second diode,
Third diode and the 4th diode；
The cathode of the first diode is connect with the first end of input circuit in first relay, the first diode
Anode connect with the second end of input circuit in first relay；The cathode of second diode with described second after
The first end connection of input circuit in electric appliance, the of input circuit in the anode of second diode and second relay
The connection of two ends, the cathode of the third transistor are connect with the first end of input circuit in the third relay, and the described 4th
The cathode of triode is connect with the second end of input circuit in the 4th relay, the anode of the third transistor and described
The anode of 4th triode is grounded.
5. non-on-board charger according to claim 1, which is characterized in that the power module specifically by 12V power supply and
24V power supply composition, the interlock circuit specifically includes the 5th relay and the 6th relay, and the switch specifically includes the 7th
Relay and the 8th relay；
The first end of input circuit in 5th relay, in the 6th relay input circuit first end and described
The movable contact switched in six relays accesses supply voltage, the second end of input circuit and the control in the 5th relay
First output end of device processed connects；It the movable contact switched in 5th relay and is switched in the 6th relay normally closed
Contact connects, and the first end of input circuit connects in the normally opened contact and the 7th relay switched in the 5th relay
It connects；The second end of input circuit is connect with the second output terminal of the controller in 6th relay；6th relay
The normally opened contact switched in device is connect with the first end of input circuit in the 8th relay, is inputted in the 7th relay
The second end of input circuit is grounded in the second end in circuit and the 8th relay.
6. non-on-board charger according to claim 5, which is characterized in that further include the 5th diode, the 6th diode,
7th diode and the 8th diode；
The cathode of 5th diode is connect with the first end of input circuit in the 5th relay, the 5th diode
Anode described in the 5th relay input circuit second end connection；The cathode of 6th diode and the 6th relay
The first end connection of input circuit, the anode of the 6th diode and second of input circuit in the 6th relay in device
End connection；The cathode of 7th diode is connect with the first end of input circuit in the 7th relay；Described 8th 2
The cathode of pole pipe is connect with the first end of input circuit in the 8th relay, the anode of the 7th diode and described
The anode of eight diodes is grounded.
7. a kind of control method of non-on-board charger characterized by comprising
Whether detection charging gun connect with the charge port of electric car to be charged；
If it is, the operational voltage level of the BMS of the identification electric car to be charged；
When the operational voltage level is first voltage grade, voltage class and described the are connected in the non-on-board charger
Connection between the identical power supply of one voltage class and the charging gun, and keep in the non-on-board charger voltage class with
Connection between the identical power supply of second voltage grade and the charging gun disconnects；
When the operational voltage level is the second voltage grade, voltage class and institute in the non-on-board charger are connected
The connection between the identical power supply of second voltage grade and the charging gun is stated, and keeps voltage etc. in the non-on-board charger
Grade and the connection between the identical power supply of the first voltage grade and the charging gun disconnect.
8. the control method of non-on-board charger according to claim 7, which is characterized in that the identification is described to be charged
The operational voltage level of the BMS of electric car specifically includes:
Control voltage class is that the power supply of the first voltage grade is the electric car to be charged charging, and to the BMS
Send the first handshake message；
If receiving the second handshake message that the BMS is replied in the first preset time, it is determined that the operating voltage of the BMS
Grade is the first voltage grade；
If second handshake message can not be received in first preset time, it is determined that the operating voltage of the BMS
Grade is the second voltage grade.
9. the control method of non-on-board charger according to claim 8, which is characterized in that in the determination BMS
Operating voltage be the second voltage grade after, further includes:
Control voltage class is that the power supply of the second voltage grade is the electric car to be charged charging, and to the BMS
Send third handshake message；
If receiving the 4th handshake message that the BMS is replied in the second preset time, enter the control voltage class
Power supply identical with the operational voltage level is the step of electric car to be charged charges；
If the 4th handshake message can not be received in second preset time, stop being the electronic vapour to be charged
Vehicle charging, and carry out fault alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833327.5A CN109327053A (en) | 2018-07-26 | 2018-07-26 | A kind of non-on-board charger and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833327.5A CN109327053A (en) | 2018-07-26 | 2018-07-26 | A kind of non-on-board charger and its control method |
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| Publication Number | Publication Date |
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| CN109327053A true CN109327053A (en) | 2019-02-12 |
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