CN110323811A - Onboard charger and its control method - Google Patents
Onboard charger and its control method Download PDFInfo
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- CN110323811A CN110323811A CN201810273420.5A CN201810273420A CN110323811A CN 110323811 A CN110323811 A CN 110323811A CN 201810273420 A CN201810273420 A CN 201810273420A CN 110323811 A CN110323811 A CN 110323811A
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- control switch
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000006698 induction Effects 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 description 33
- 238000010586 diagram Methods 0.000 description 6
- 230000009466 transformation Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- H02J7/022—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
Abstract
This disclosure relates to a kind of onboard charger and its control method, it include: controller, AC/DC convertor, two-way DC converter and the Unidirectional direct-current converter being connect respectively with the controller, the AC/DC convertor is connect by the first DC bus with the two-way DC converter, the two-way DC converter is connect by the second DC bus with on-board high-voltage battery, the Unidirectional direct-current converter is connected in parallel on first DC bus, which connect with vehicle-mounted A-battery.
Description
Technical field
This disclosure relates to onboard charger technical field, and in particular, to a kind of onboard charger and its control method.
Background technique
Onboard charger is an important component on vehicle, can be charging on-vehicle battery by onboard charger, lead to
Often, the charge power supply of on-vehicle battery is alternating current, and charging on-vehicle battery electric current is direct current, it is therefore desirable in charge power supply and
Increase AC/DC changeover switch between on-vehicle battery, for converting to alternating current and direct current.
In the prior art, AC/DC changeover switch is non-isolated, is turned although can be realized to alternating current and direct current
It changes, but alternating current and direct current cannot be isolated, so that alternating current circuit and DC circuit interfere with each other, it is steady to influence system
It is fixed.
Summary of the invention
Purpose of this disclosure is to provide a kind of onboard charger and its control methods.
To achieve the goals above, the disclosure provides a kind of onboard charger, comprising: controller, respectively with the control
AC/DC convertor, two-way DC converter and the Unidirectional direct-current converter of device connection, the AC/DC convertor pass through the
One DC bus is connect with the two-way DC converter, and the two-way DC converter passes through the second DC bus and vehicle-mounted height
Piezoelectric battery connection；The Unidirectional direct-current converter is connected in parallel on first DC bus, the Unidirectional direct-current converter and vehicle
Carry A-battery connection.
Optionally, the controller turn between alternating current and direct current for controlling the AC/DC convertor
Change, and control the two-way DC converter carry out first DC bus first voltage and second DC bus
Conversion between second voltage, and the control Unidirectional direct-current converter first voltage is converted to be used for it is described vehicle-mounted
The tertiary voltage of A-battery charging.
Optionally, the alternating current of input is converted to output for controlling the AC/DC convertor by the controller
Direct current simultaneously obtains the first voltage, and control the two-way DC converter first voltage of input is converted to it is defeated
The second voltage for on-board high-voltage battery charging out；The controller is also used in the on-board high-voltage electricity
After the charging complete of pond, first electricity that the second voltage of input is converted to output by the two-way DC converter is controlled
Pressure, and control the tertiary voltage that the first voltage of input is converted to output by the Unidirectional direct-current converter.
Optionally, the AC/DC convertor and load connect, the controller, for controlling the bidirectional, dc transformation
The second voltage of input is converted to the first voltage of output by device, and controls the AC/DC convertor for input
Direct current is converted to the alternating current for being the load supplying of output.
Optionally, the two-way DC converter includes isolated two-way DC converter.
Optionally, the Unidirectional direct-current converter includes isolated Unidirectional direct-current converter.
Optionally, the AC/DC convertor includes: the first two-way H bridge, and the first two-way H bridge includes that the first control is opened
Guan Guan, the second control switch pipe, third control switch pipe and the 4th control switch pipe, the first control switch pipe and described
There are first nodes between second control switch pipe, exist between the third control switch pipe and the 4th control switch pipe
Second node, there are third node, second controls between the first control switch pipe and the third control switch pipe
There are fourth node, the first node and the second nodes for connecting between switching tube and the 4th control switch pipe
AC power source or the load, the third node and the fourth node are described for connecting the two-way DC converter
Third node and the fourth node are also used to connect the Unidirectional direct-current converter.
Optionally, the two-way DC converter includes: the second two-way H bridge, first connect with the described second two-way H bridging
Transformer, and the two-way H bridge of third being connect with first transformer；The second two-way H bridge includes the 5th control switch
Pipe, the 6th control switch pipe, the 7th control switch pipe and the 8th control switch pipe, the 5th control switch pipe and described
There are the 5th nodes between six control switch pipes, and there are between the 7th control switch pipe and the 8th control switch pipe
Six nodes, there are the 7th node between the 5th control switch pipe and the 7th control switch pipe, the 6th control is opened
There are the 8th nodes between 8th control switch pipe described in Guan Guanhe, wherein the 7th node and the 8th node are used for
The AC/DC convertor is connected, the 7th node and the 8th node are also used to connect the Unidirectional direct-current converter,
5th node and the 6th node are used to connect one side of first transformer；The two-way H bridge of third includes the
Nine control switch pipes, the tenth control switch pipe, the 11st control switch pipe and the 12nd control switch pipe, the 9th control
There are the 9th node, the 11st control switch pipe and the 12nd controls between switching tube and the tenth control switch pipe
There are protelum points between switching tube processed, and there are the tenth between the 9th control switch pipe and the 11st control switch pipe
One node, there are the 12nd nodes between the tenth control switch pipe and the 12nd control switch pipe, wherein described
Nine nodes and protelum point are used to connect the another side of first transformer, the 11st node and the described 12nd
Node is for connecting the on-board high-voltage battery.
Optionally, the Unidirectional direct-current converter includes: the 4th two-way H bridge, second connect with the described 4th two-way H bridging
Transformer, and the control switch component being connect with second transformer；The 4th two-way H bridge includes that the 13rd control is opened
Guan Guan, the 14th control switch pipe, the 15th control switch pipe and the 16th control switch pipe, the 13rd control switch
There are the 13rd node, the 15th control switch pipe and the 16th controls between pipe and the 14th control switch pipe
There are the 14th nodes between switching tube processed, exist between the 13rd control switch pipe and the 15th control switch pipe
15th node, there are the 16th nodes between the 14th control switch pipe and the 16th control switch pipe, wherein
15th node and the 16th node are for connecting the AC/DC convertor, the 15th node and described the
16 nodes are also used to connect the two-way DC converter, the 13rd node and the 14th node for connecting institute
State one side of the second transformer；The another side of second transformer includes the first magnetic induction line and the second magnetic induction line, the control
Switch block includes the 17th control switch pipe, the 18th control switch pipe, wherein the anode connection institute of first magnetic induction line
One end of the 17th control switch pipe is stated, the cathode of first magnetic induction line is connect with the anode of second magnetic induction line, described
The cathode of second magnetic induction line connects one end of the 18th control switch pipe, the cathode of first magnetic induction line and described second
There are the 17th nodes between the anode of magnetic induction line, between the 17th control switch pipe and the 18th control switch pipe
There are the 18th node, the 17th node and the 18th node are for connecting the vehicle-mounted A-battery.
The disclosure also provides a kind of control method of onboard charger, and the onboard charger includes controller, respectively with
AC/DC convertor, two-way DC converter and the Unidirectional direct-current converter of the controller connection, the AC converter
Connect by the first DC bus with the two-way DC converter, the two-way DC converter by the second DC bus with
The connection of on-board high-voltage battery；The Unidirectional direct-current converter is connected in parallel on first DC bus, the Unidirectional direct-current transformation
Device is connect with vehicle-mounted A-battery, which comprises obtains control instruction by the controller；It is in the control instruction
When charging instruction, the direct current that the alternating current of input is converted to output by the AC/DC convertor is controlled by the controller
And first voltage is obtained, and control the two-way DC converter and be used for the vehicle for what the first voltage of input was converted to output
Carry the second voltage of high-tension battery charging；Wherein, the first voltage is the voltage on the first DC bus；Refer in the control
Enable is when discharging instruction, to control the two-way DC converter by the controller and be converted to the second voltage of input
Output the first voltage, and control the AC/DC convertor by the direct current of input be converted to output be used for for load
The alternating current of power supply.
Optionally, the method also includes: after for the on-board high-voltage battery charging complete, pass through the controller control
It makes the two-way DC converter and the second voltage of input is converted to the first voltage of output, and control the list
The first voltage of input is converted to the tertiary voltage of output to DC converter.
Through the above technical solutions, increasing two-way DC converter, AC/DC convertor is made to pass through two-way DC converter
It connect with on-board high-voltage battery, since two-way DC converter is isolating device, alternating current and direct current can be isolated,
It avoids alternating current circuit and DC circuit from interfering with each other, and spirit can be carried out to the voltage of DC side by the two-way DC converter
Control living, increases the anti-interference ability of system.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the onboard charger in the prior art illustrated according to one；
Fig. 2 is a kind of structural schematic diagram of onboard charger shown according to an exemplary embodiment；
Fig. 3 is a kind of circuit diagram of the onboard charger illustrated according to one；
Fig. 4 is a kind of flow chart of the control method of onboard charger shown according to an exemplary embodiment.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Before being illustrated to content of this disclosure, the application background of the disclosure is illustrated first.
Onboard charger is to be built-in with vehicle-mounted charge circuit, Fig. 1 for the important component of the charging on-vehicle battery on vehicle
It is the structural schematic diagram of the onboard charger in the prior art illustrated according to one, as shown in Figure 1, onboard charger master
It to include controller, AC/DC convertor, module of releasing, controller is connect with AC/DC convertor and module of releasing respectively.?
When needing to charge for on-board high-voltage battery, AC/DC convertor connects AC power source, using AC power source as on-board high-voltage battery
The power supply of charging, what it is due to AC power source output is alternating current, and the charging current of on-board high-voltage battery is direct current, because
This, needs to control the direct current that the alternating current of input is converted to output by AC/DC convertor by controller.But alternating current-direct current
Converter is non-isolating device, converts alternating current to direct current although can be realized, cannot be to alternating current and direct current
It is isolated, so that alternating current circuit and DC circuit interfere with each other, influences the stability of system.In addition, passing through the prior art
In onboard charger the voltage of DC side cannot be controlled so that the voltage narrow application range of DC side, exchanges side
The common-mode voltage that electronic device is born is high, leads to the poor anti jamming capability of system.
In addition, in order to carry out stability contorting to the voltage on DC bus, and electric current is filtered, usually straight
Flow series capacitance on bus.But after on-board high-voltage battery charging complete, since the quantity of electric charge of capacitor storage cannot be released immediately
It puts, prevent the voltage on DC bus is from reducing immediately, making circuit, there are security risks.
It is to be released by releasing module to the voltage on DC bus in the prior art, to realize to the electricity in capacitor
Lotus amount is discharged, and achievees the purpose that the voltage for reducing DC bus, which includes diode rectifier bridge and DC/DC
(Direct Current-Direct Current, DC-DC) converter.After on-board high-voltage battery charging complete, control
The direct current of input is converted to alternating current and exported by device control AC/DC convertor, whole to alternating current by diode rectifier bridge
After stream, direct current is exported, and DC/DC converter is controlled by controller, decompression processing is carried out to the direct current of input, output is full
The voltage of the vehicle-mounted A-battery charging of foot.In this way, by electric energy unloading that direct current bus bar is stored to storage in vehicle-mounted low tension
In pond, quickly to reduce the voltage of DC bus.But in the prior art, the mistake released in the voltage to DC bus
Cheng Zhong at least needs to carry out an AC-DC conversion, and energy conversion efficiency is low, meanwhile, the circuit structure for module of releasing is inadequate
Simplify, increases systematic difference cost.
Non-isolated control circuit is used to solve the prior art, alternating current and direct current cannot be isolated, so that
The problem of alternating current circuit and DC circuit interfere with each other, the disclosure provide a kind of onboard charger and its control method, increase double
To DC converter, it connect AC/DC convertor with on-board high-voltage battery by two-way DC converter, due to bidirectional, dc
Converter is isolating device, and alternating current and direct current can be isolated, and alternating current circuit and DC circuit is avoided to interfere with each other,
And by the two-way DC converter can the voltage to DC side flexibly controlled, increase the anti-interference ability of system.
Content of this disclosure is described in detail below by specific embodiment.
Fig. 2 is a kind of structural schematic diagram of onboard charger shown according to an exemplary embodiment, as shown in Fig. 2, should
Onboard charger includes controller, the AC/DC convertor that connect respectively with the controller, two-way DC converter and unidirectional
DC converter, the AC/DC convertor are connect by the first DC bus with the two-way DC converter, which becomes
Parallel operation is connect by the second DC bus with on-board high-voltage battery；The Unidirectional direct-current converter is connected in parallel on first DC bus
On, which connect with vehicle-mounted A-battery.
Wherein, controller for controlling the conversion between AC/DC convertor progress alternating current and direct current, and controls
The two-way DC converter carries out between the first voltage of first DC bus and the second voltage of second DC bus
Conversion, and control the Unidirectional direct-current converter and the first voltage is converted to the third electricity for being used for the vehicle-mounted A-battery charging
Pressure.
Wherein, which is used to power for the high-pressure system (such as 300~600V) of vehicle, the vehicle-mounted low tension
Pond is used to power for the low-pressure system (such as 12V) of vehicle.The two-way DC converter may include isolated two-way DC converter,
Such as isolated two-way full-bridge DC/DC converter, which may include isolated Unidirectional direct-current converter.
Fig. 3 is a kind of circuit diagram of the onboard charger illustrated according to one, as shown in Figure 3, wherein by the first control
The electricity that switch transistor T 1, the second control switch pipe T2, third control switch pipe T3 and the 4th control switch pipe T4 connection processed form
Road is AC/DC convertor, by controller control switch T1, T2, T3, T4 realize control AC/DC convertor to alternating current and
Direct current is converted, and is two-way straight by the circuit that 12 control switch pipe Q1~Q8 connection of the 5th control switch Guan Zhi forms
Current converter realizes control two-way DC converter to the by controller control switch Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
Conversion between the first voltage of one DC bus and the second voltage of the second DC bus, by the 13rd control switch Guan Zhi
18 control switch pipe S1~S6 connections composition circuit be Unidirectional direct-current converter, by controller control switch S1, S2,
S3, S4, S5, S6 realize that the first voltage of input is converted to the tertiary voltage of output by control Unidirectional direct-current converter.Wherein, scheme
Controller in 2 does not mark in Fig. 3.
It is described in detail below with reference to topological structure of the Fig. 3 to the circuit of the onboard charger.
The AC/DC convertor includes: the first two-way H bridge, as shown in figure 3, the first two-way H bridge includes that the first control is opened
Close pipe T1, the second control switch pipe T2, third control switch pipe T3 and the 4th control switch pipe T4, wherein first control
There are first node between switch transistor T 1 and the second control switch pipe T2, the control of third control switch pipe T3 and the 4th is opened
There are second nodes between the pipe T4 of pass, and there are third sections between the first control switch pipe T1 and third control switch pipe T3
Point, there are fourth node, the third nodes and the 4th between the second control switch pipe T2 and the 4th control switch pipe T4
Be parallel with the first DC bus between node, be in series with first capacitor C1 on first DC bus, the first node and this
Two nodes are for connecting AC power source or the load, for example, the second node can pass through the first inductance L1 and the AC power source
Or the anode of the load is connected, which can pass through the cathode phase of the second inductance L2 and the AC power source or the load
Even, resistance R is in parallel with the AC power source or the load after connecting with capacitor C；The third node and the fourth node are for connecting
The two-way DC converter, for example, the third node can be connect with the 7th node of the two-way DC converter, Section four
Point can be connect with the 8th node of the two-way DC converter, and the third node and the fourth node are also used to connect this unidirectionally
DC converter, for example, the third node can be connect with the 15th node of the Unidirectional direct-current converter, which can
To be connect with the 16th node of the Unidirectional direct-current converter.
The two-way DC converter includes: the second two-way H bridge, the first transformer connect with the second two-way H bridging, and
The two-way H bridge of the third being connect with first transformer.
As shown in figure 3, the second two-way H bridge includes the 5th control switch pipe Q1, the 6th control switch pipe Q2, the 7th control
Switching tube Q3 and the 8th control switch pipe Q4, wherein between the 5th control switch pipe Q1 and the 6th control switch pipe Q2
There are the 5th nodes, and there are the 6th node, the 5th controls between the 7th control switch pipe Q3 and the 8th control switch pipe Q4
There are the 7th node, the controls of the 6th control switch pipe Q2 and the 8th between switching tube Q1 processed and the 7th control switch pipe Q3
There are the 8th node, the 7th node and the 8th nodes between switching tube Q4 for connecting the AC/DC convertor, for example, should
7th node can be connect with the third node of the AC/DC convertor, and the 8th node can be with the of the AC/DC convertor
The connection of four nodes, the 7th node and the 8th node are also used to connect the Unidirectional direct-current converter, for example, the 7th node can
To connect with the 15th node of the Unidirectional direct-current converter, the 8th node can be with the 16th of the Unidirectional direct-current converter the
Node connection, the 5th node and the 6th node are used to connect one side of first transformer, wherein the 5th node with should
It is in series with the 5th inductance L5 between first transformer, the second capacitor C2 is in series between the 6th node and first transformer.
As shown in figure 3, the two-way H bridge of the third includes the 9th control switch pipe Q5, the tenth control switch pipe Q6, the 11st control
Switching tube Q7 processed and the 12nd control switch pipe Q8, wherein the 9th control switch pipe Q5 and the tenth control switch pipe Q6
Between there are the 9th nodes, there are protelum point between the 11st control switch pipe Q7 and the 12nd control switch pipe Q8,
There are the 11st node, the tenth control switch pipe Q6 between 9th control switch pipe Q5 and the 11st control switch pipe Q7
And the 12nd between control switch pipe Q8 there are the 12nd node, the 9th node and the protelum point for connect this first
The another side of transformer, wherein be in series with third capacitor C3, the 11st node between the protelum point and first transformer
With the 12nd node for connecting the on-board high-voltage battery, specifically, the 11st node is connected to the on-board high-voltage battery
Anode, the 12nd node is connected to the cathode of the on-board high-voltage battery, and in the parallel connection of the two sides of the on-board high-voltage battery
There is second DC bus, is in series with the 4th capacitor C4 on second DC bus.
The Unidirectional direct-current converter includes: the 4th two-way H bridge, the second transformer connect with the 4th two-way H bridging, and
The control switch component being connect with second transformer.
As shown in figure 3, the 4th two-way H bridge includes the 13rd control switch pipe S1, the 14th control switch pipe, the 15th
Control switch pipe S3 and the 16th control switch pipe S4, the 13rd control switch pipe S1 and the 14th control switch pipe S2
Between there are the 13rd nodes, there are the 14th sections between the 15th control switch pipe S3 and the 16th control switch pipe S4
Point, there are the 15th node, the 14th controls between the 13rd control switch pipe S1 and the 15th control switch pipe S3
There are the 16th nodes between switching tube S2 and the 16th control switch pipe S4, wherein the 15th node and the 16th
Node is for connecting the AC/DC convertor, for example, the 15th node can connect with the third node of the AC/DC convertor
It connects, the 16th node can be connect with the fourth node of the AC/DC convertor；15th node and the 16th node
It is also used to connect the two-way DC converter, for example, 15 node can connect with the 7th node of the two-way DC converter
It connects, the 16th node can be connect with the 8th node of the two-way DC converter；13rd node and the 14th section
One side for connecting second transformer is put, for example, leading between the 13rd node and the anode on the second transformer one side
It crosses concatenated third inductance L3 and the 5th capacitor C5 to be connected, the 14th node is connect with the cathode on the second transformer one side；
The another side of second transformer includes the first magnetic induction line and the second magnetic induction line, which includes that the 17th control is opened
Close pipe S5, the 18th control switch pipe S6, wherein the anode of first magnetic induction line connects the one of the 17th control switch pipe
End, the cathode of first magnetic induction line are connect with the anode of second magnetic induction line, and the cathode of second magnetic induction line connects the 18th
One end of control switch pipe, there are the 17th nodes between the cathode of first magnetic induction line and the anode of second magnetic induction line, should
There are the 18th node, the 17th nodes and the 18th between 17th control switch pipe and the 18th control switch pipe
Node is for connecting the vehicle-mounted A-battery, and specifically, the 17th node is connected to the cathode of the vehicle-mounted A-battery, this
The 4th inductance L4, also, the both ends of the vehicle-mounted A-battery are in series between 18 nodes and the anode of the vehicle-mounted A-battery
It is parallel with the 6th capacitor C6.
In the present embodiment, since two-way DC converter is isolating device, and AC/DC convertor passes through bidirectional, dc
Converter is connect with on-board high-voltage battery, can be isolated to alternating current and direct current, be avoided alternating current circuit and DC circuit
It interferes with each other.Meanwhile the first voltage that the two-way DC converter carries out first DC bus can be controlled by controller
Conversion between the second voltage of second DC bus makes it possible to voltage (such as first voltage, the second electricity to DC side
Pressure) flexibly controlled, to increase the scope of application of the voltage of DC side, enhance the anti-interference ability of system.
Illustratively, separately below by the way that controller control on-board high-voltage battery charges, DC bus is released and vehicle-mounted height
These three scenes of piezoelectricity tank discharge are illustrated content of this disclosure.
Scene one, control on-board high-voltage battery charging.
One kind is possible to be achieved in that, controller controls the AC/DC convertor and the alternating current of input is converted to output
Direct current and obtain the first voltage, and control the two-way DC converter and the first voltage of input be converted into output
The second voltage for on-board high-voltage battery charging.
Wherein, the use which is converted to the first voltage of input output is being controlled by controller
During the second voltage of on-board high-voltage battery charging, when first voltage is higher than second voltage, bidirectional, dc becomes
Parallel operation carries out decompression processing to the first voltage of input, exports second voltage；It is two-way straight when first voltage is lower than second voltage
Current converter carries out boosting processing to the first voltage of input, exports second voltage.
For example, it is assumed that the first voltage is 380V, second voltage 400V, i.e. first voltage are lower than second voltage, firstly,
After controller control AC/DC convertor is rectified the alternating current of input, the direct current of output is 380V, and is controlled two-way
DC converter carries out boosting processing to the 380V direct current of input, 400V direct current is exported, for filling to on-board high-voltage battery
Electricity.
It should be noted that in the present embodiment during controlling the charging of on-board high-voltage battery, if detecting vehicle-mounted low
Piezoelectric battery feed when, can by controller control Unidirectional direct-current converter by the first voltage of input be converted to output be used for
The tertiary voltage of vehicle-mounted A-battery charging.For example, the 380V direct current exported after AC/DC convertor is rectified passes through unidirectionally
Output 12V DC electricity after DC converter decompression, is used for vehicle-mounted A-battery for the 12V DC electricity and charges.
Scene two, control DC bus are released.
In the present embodiment, which includes the first DC bus and the second DC bus, meanwhile, for convenient for control
The process that first DC bus and the second DC bus are released is described in detail, it is now assumed that concatenated electricity on the first DC bus
Holding is first capacitor, and concatenated capacitor is the second capacitor on the second DC bus.
After on-board high-voltage battery charging complete, the first DC bus is controlled, one kind that the second DC bus is released
Possible to be achieved in that, which is also used to after the on-board high-voltage battery charging complete, controls bidirectional, dc transformation
The second voltage of input is converted to the first voltage of output by device, and control the Unidirectional direct-current converter by input this
One voltage is converted to the tertiary voltage of output.
Wherein, in the mistake for the first voltage that the second voltage of input is converted to output by two-way DC converter
Cheng Zhong, the electric energy that can be stored to the second capacitor are converted and are exported, and the electric energy of output is stored temporarily in first capacitor, with
Realization releases to the second DC bus, reduces second voltage.Simultaneously as controller control two-way DC converter output
Voltage is first voltage, consistent with the voltage of the first DC bus, is avoided in the electric energy unloading for storing the second capacitor
In one capacitor, make first capacitor store electric energy increase when, first voltage increase the problem of.Become by controlling the Unidirectional direct-current
It, can be to the electric energy of first capacitor storage during the first voltage of input is converted to the tertiary voltage of output by parallel operation
It is converted and is exported, the electric energy of output is used to charge to vehicle-mounted A-battery, the first DC bus is let out with realizing
It puts, reduces the purpose of first voltage.
Further, since the voltage of vehicle middle low-pressure system is far below the voltage of high-pressure system, i.e., tertiary voltage is far below the
Isolated Unidirectional direct-current buck converter may be selected in one voltage, therefore, the Unidirectional direct-current converter, controls the list by controller
To DC converter when the first voltage of input is reduced to the tertiary voltage that vehicle-mounted A-battery charges, moreover it is possible to high-tension circuit
It is isolated with lower-voltage circuit.
In conclusion controlling two-way DC converter and Unidirectional direct-current converter on the first bus the by controller
One capacitor storage electric energy and the second DC bus on the second capacitor storage the direct unloading of electric energy in vehicle-mounted A-battery,
It is released, and not had to by passing through multiple alternating current-direct current in the prior art to the first DC bus and the second DC bus with realizing
Direct current bus bar is stored into the electric energy unloading of storage in vehicle-mounted A-battery again after transformation, therefore, the disclosure can be rapidly
Release to the first DC bus and the second DC bus, and energy conversion efficiency is high, meanwhile, compared with the prior art in
It releases module, the one-way isolation transformer configuration in the disclosure for releasing is simple, and cost is relatively low.
Scene three: control on-board high-voltage battery discharge.
In the present embodiment, when AC/DC convertor and load connect, on-board high-voltage battery is equivalent to as load supplying
Power supply, for example, the on-board high-voltage battery can be used as the external power supply of onboard charger, it is being on vehicle by onboard charger
When charging on-vehicle battery, which provides electric energy for on-vehicle battery, at this point, onboard charger and and vehicle-mounted charge
The on-vehicle battery of device connection is equivalent to load.On-board high-voltage battery discharge is controlled, the load for AC/DC convertor connection supplies
A kind of achievable mode of electricity is the controller, converts the second voltage of input for controlling the two-way DC converter
For the first voltage of output, and controls the AC/DC convertor DC voltage of input is converted into output and be used to bear for this
Carry the alternating voltage of power supply.
Wherein, by controller control two-way DC converter by the second voltage of input be converted to output this
During one voltage, when second voltage is greater than first voltage, the second voltage of input drops in two-way DC converter
Pressure processing, exports first voltage；When second voltage is less than first voltage, two-way DC converter to the second voltage of input into
Row boosting processing, exports first voltage.
For example, it is assumed that the first voltage is 350V, i.e. load required voltage is 220V alternating current, and second voltage is
400V, second voltage are higher than first voltage, and controller control two-way DC converter is depressured the 400V direct current of input
Processing, exports the direct current of 350V, and controls AC/DC convertor for after input 350V DC inverter, exports the exchange of 220V
Electricity, for the power supply for load supplying.
It should be noted that in the present embodiment during controlling on-board high-voltage battery discharge, if vehicle-mounted A-battery
When feed, then can by controller control Unidirectional direct-current converter by the first voltage of input be converted to output be used for it is vehicle-mounted low
The tertiary voltage of piezoelectric battery charging.For example, passing through Unidirectional direct-current converter for the direct current of 350V on the first DC bus of input
After electricity is depressured, the direct current of 12V is exported, is charged for vehicle-mounted A-battery.
In addition, if being detected in the case that the onboard charger in the disclosure does not work in above-mentioned scene one and scene three
When being fed to vehicle-mounted A-battery, vehicle-mounted A-battery can be given to charge by following two mode, mode one: pass through controller control
The alternating current of input is converted to the direct current of output and obtains first voltage by AC/DC convertor processed, and controls Unidirectional direct-current change
The first voltage of input is converted to the tertiary voltage for being used for vehicle-mounted A-battery charging of output by parallel operation.Mode two: pass through control
The second voltage of input is converted to the first voltage of output by device control two-way DC converter processed, and controls Unidirectional direct-current transformation
The first voltage of input is converted to the tertiary voltage for being used for vehicle-mounted A-battery charging of output by device.
By foregoing circuit, increase two-way DC converter, AC/DC convertor is made to pass through two-way DC converter and vehicle
High-tension battery connection is carried, since two-way DC converter is isolating device, alternating current and direct current can be isolated, be avoided
Alternating current circuit and DC circuit interfere with each other, and by the two-way DC converter can the voltage to DC side flexibly controlled
System, increases the anti-interference ability of system.Meanwhile it will by controller control two-way DC converter and Unidirectional direct-current converter
The direct unloading of electric energy of capacitor storage on first bus and on the second DC bus does not have to logical in vehicle-mounted A-battery
It crosses and direct current bus bar is stored into the electric energy unloading of storage in vehicle-mounted low tension again after multiple ac-dc conversion in the prior art
In pond, therefore, the disclosure can rapidly release to the first DC bus and the second DC bus, and energy conversion efficiency
Height, meanwhile, compared with the prior art in module of releasing, the one-way isolation transformer configuration in the disclosure for releasing is simple,
Cost is relatively low.
Fig. 4 is a kind of flow chart of the control method of onboard charger shown according to an exemplary embodiment, such as Fig. 4 institute
To show, this method can be applied to above-mentioned onboard charger, this method comprises:
S401 obtains control instruction by the controller.
S402 controls the AC/DC convertor for input by the controller when the control instruction is charging instruction
Alternating current is converted to the direct current of output and obtains first voltage, and controls the two-way DC converter for the first voltage of input
Be converted to the second voltage for on-board high-voltage battery charging of output.
In this step, since two-way DC converter is isolating device, alternating current and direct current can be isolated,
Alternating current circuit and DC circuit is avoided to interfere with each other.Meanwhile two-way DC converter is controlled by controller and turns first voltage
Second voltage is changed to, it can be achieved that flexibly being controlled the second voltage on the second DC bus, it can be to the voltage of DC side
Carry out control, to increase the scope of application of the voltage of DC side, enhance the anti-interference ability of system.
Wherein, which may include isolated two-way DC converter, such as isolated two-way full-bridge DC/DC
Converter, the Unidirectional direct-current converter may include isolated Unidirectional direct-current converter.The on-board high-voltage battery is used for as vehicle
High-pressure system (such as 300~600V) power supply, the vehicle-mounted A-battery are used to power for the low-pressure system (such as 12V) of vehicle.
This is used for by what the first voltage of input was converted to output controlling the two-way DC converter by controller
On-board high-voltage battery charging the second voltage during, the first voltage be the first DC bus voltage, this second
When voltage is the voltage of on-board high-voltage battery charging, which is the voltage of the second DC bus.In first voltage height
When second voltage, two-way DC converter carries out decompression processing to the first voltage of input, exports second voltage；In the first electricity
It forces down when second voltage, two-way DC converter carries out boosting processing to the first voltage of input, exports second voltage.
For example, it is assumed that the first voltage is 380V, second voltage 400V, i.e. first voltage are lower than second voltage, firstly,
After controller control AC/DC convertor is rectified the alternating current of input, the direct current for exporting direct current is 380V, and is controlled
Two-way DC converter processed carries out boosting processing to the 380V direct current of input, exports 400V direct current, for on-board high-voltage
Battery charging.
It should be noted that in this step during the charging of on-board high-voltage battery, if vehicle-mounted A-battery is fed,
Unidirectional direct-current converter being controlled by controller, the first voltage of input is converted into being used for vehicle-mounted A-battery of output
The tertiary voltage of charging.For example, the 380V direct current exported after AC/DC convertor is rectified is dropped by Unidirectional direct-current converter
12V DC electricity is exported after pressure, which is used for vehicle-mounted A-battery and is charged.
In this step, it after on-board high-voltage battery charging complete, needs to control the first DC bus and the second direct current is female
Line is released, it is a kind of it is possible is achieved in that, by the controller control the two-way DC converter by input this
Two voltages are converted to the first voltage of output, and control the Unidirectional direct-current converter first voltage of input is converted to it is defeated
The tertiary voltage out.
Process to release convenient for the first DC bus of control and the second DC bus is described in detail, it is now assumed that first
Concatenated capacitor is first capacitor on DC bus, and concatenated capacitor is the second capacitor on the second DC bus.
Wherein, in the mistake for the first voltage that the second voltage of input is converted to output by two-way DC converter
Cheng Zhong, the electric energy that can be stored to the second capacitor are converted and are exported, and the electric energy of output is stored temporarily in first capacitor, with
Realization releases to the second DC bus, reduces second voltage.Simultaneously as controller control two-way DC converter output
Voltage is first voltage, consistent with the voltage of the first DC bus, is avoided in the electric energy unloading for storing the second capacitor
In one capacitor, make first capacitor store electric energy increase when, first voltage increase the problem of.Become by controlling the Unidirectional direct-current
It, can be to the electric energy of first capacitor storage during the first voltage of input is converted to the tertiary voltage of output by parallel operation
It is converted and is exported, the electric energy of output is used to charge to vehicle-mounted A-battery, the first DC bus is let out with realizing
It puts, reduces the purpose of first voltage.
Further, since the voltage of vehicle middle low-pressure system is far below the voltage of high-pressure system, i.e., tertiary voltage is far below the
Isolated Unidirectional direct-current buck converter may be selected in one voltage, therefore, the Unidirectional direct-current converter, controls the list by controller
To DC converter when the first voltage of input is reduced to the tertiary voltage that vehicle-mounted A-battery charges, moreover it is possible to high-tension circuit
It is isolated with lower-voltage circuit.
In conclusion the disclosure is to control two-way DC converter and Unidirectional direct-current converter by controller for first
The direct unloading of electric energy of the second capacitor storage is vehicle-mounted low on the electric energy and the second DC bus that first capacitor stores on bus
It in piezoelectric battery, is released, and not had to by passing through in the prior art to the first DC bus and the second DC bus with realizing
Direct current bus bar is stored into the electric energy unloading of storage in vehicle-mounted A-battery again after multiple ac-dc conversion, therefore, the disclosure
It can rapidly release to the first DC bus and the second DC bus, and energy conversion efficiency is high, meanwhile, compared to existing
There is the module of releasing in technology, the one-way isolation transformer configuration for being used to release in the disclosure is simple, and cost is relatively low.
S403, when the control instruction is electric discharge instruction, controlling the two-way DC converter by the controller will be inputted
The second voltage be converted to the first voltage of output, and control the AC/DC convertor direct current of input is converted to it is defeated
The alternating current for being load supplying out.
In the present embodiment, when AC/DC convertor and load connect, on-board high-voltage battery is equivalent to as load supplying
Power supply, for example, the on-board high-voltage battery can be used as the external power supply of onboard charger, it is being on vehicle by onboard charger
When charging on-vehicle battery, which provides electric energy for on-vehicle battery, at this point, onboard charger and and vehicle-mounted charge
The on-vehicle battery of device connection is equivalent to load, wherein the onboard charger of the built-in disclosure in the onboard charger.
Wherein, by controller control two-way DC converter by the second voltage of input be converted to output this
During one voltage, when second voltage is greater than first voltage, the second voltage of input drops in two-way DC converter
Pressure processing, exports first voltage；When second voltage is less than first voltage, two-way DC converter to the second voltage of input into
Row boosting processing, exports first voltage.
For example, it is assumed that the first voltage is 350V, i.e. load required voltage is 220V alternating current, and second voltage is
400V, second voltage are higher than first voltage, and controller control two-way DC converter is depressured the 400V direct current of input
Processing, exports the direct current of 350V, and controls AC/DC convertor for after input 350V DC inverter, exports the exchange of 220V
Electricity, for the power supply for load supplying.
It should be noted that in the present embodiment during controlling on-board high-voltage battery discharge, if vehicle-mounted A-battery
When feed, then can by controller control Unidirectional direct-current converter by the first voltage of input be converted to output be used for it is vehicle-mounted low
The tertiary voltage of piezoelectric battery charging.For example, passing through Unidirectional direct-current converter for the direct current of 350V on the first DC bus of input
After electricity is depressured, the direct current of 12V is exported, is charged for vehicle-mounted A-battery.
In addition, if the onboard charger in the disclosure does not work in the case of above-mentioned S402 and S403, it is vehicle-mounted detecting
It when A-battery is fed, can be charged by following two mode to vehicle-mounted A-battery, mode one: be handed over by controller control straight
The alternating current of input is converted to the direct current of output and obtains first voltage by current converter, and controlling Unidirectional direct-current converter will
The first voltage of input is converted to the tertiary voltage for the charging of vehicle-mounted A-battery of output.Mode two: pass through controller control
The second voltage of input is converted to the first voltage of output by two-way DC converter processed, and controlling Unidirectional direct-current converter will be defeated
The first voltage entered is converted to the tertiary voltage for the charging of vehicle-mounted A-battery of output.
By the above method, first voltage and second voltage are converted by controlling two-way DC converter, not only
Alternating current and direct current can be electrically isolated from, alternating current circuit and DC circuit is avoided to interfere with each other, and can be to the voltage of DC side
It is flexibly controlled, increases the anti-interference ability of system.In addition, controlling two-way DC converter and unidirectional straight by controller
Current converter by the first bus and the second direct current bus bar stores the direct unloading of electric energy of storage in vehicle-mounted A-battery,
And do not have to by the way that direct current bus bar is stored the electric energy unloading of storage in vehicle again after multiple ac-dc conversion in the prior art
It carries in A-battery, therefore, the disclosure, which realizes, rapidly releases to the first DC bus and the second DC bus, and energy
Measure high conversion efficiency, meanwhile, compared with the prior art in module of releasing, the one-way isolation converter in the disclosure for releasing
Structure is simple, and cost is relatively low.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (11)
1. a kind of onboard charger characterized by comprising controller, the ac-dc conversion being connect respectively with the controller
Device, two-way DC converter and Unidirectional direct-current converter, the AC/DC convertor pass through the first DC bus and described pair
It is connected to DC converter, the two-way DC converter is connect by the second DC bus with on-board high-voltage battery, the list
It is connected in parallel on first DC bus to DC converter, the Unidirectional direct-current converter is connect with vehicle-mounted A-battery.
2. onboard charger according to claim 1, which is characterized in that the controller, for controlling the alternating current-direct current
Converter carries out the conversion between alternating current and direct current, and controls the two-way DC converter and carry out the first direct current mother
Conversion between the first voltage of line and the second voltage of second DC bus, and the control Unidirectional direct-current converter
The first voltage is converted to the tertiary voltage for being used for the vehicle-mounted A-battery charging.
3. onboard charger according to claim 2, which is characterized in that the controller, for controlling the alternating current-direct current
The alternating current of input is converted to the direct current of output and obtains the first voltage by converter, and is controlled the bidirectional, dc and become
The first voltage of input is converted to the second voltage for being used for the on-board high-voltage battery charging of output by parallel operation；
The controller is also used to after the on-board high-voltage battery charging complete, and controlling the two-way DC converter will be defeated
The second voltage entered is converted to the first voltage of output, and controlling the Unidirectional direct-current converter will be described in input
First voltage is converted to the tertiary voltage of output.
4. onboard charger according to claim 3, which is characterized in that the AC/DC convertor and load connect, institute
State controller, for control the two-way DC converter by the second voltage of input be converted to output it is described first electricity
Pressure, and control the AC/DC convertor and the direct current of input is converted into being used for as the exchange of the load supplying of output
Electricity.
5. onboard charger according to any one of claims 1 to 4, which is characterized in that the two-way DC converter packet
Include isolated two-way DC converter.
6. onboard charger according to claim 1, which is characterized in that the Unidirectional direct-current converter includes isolated list
To DC converter.
7. onboard charger according to claim 1, which is characterized in that the AC/DC convertor includes: the first two-way H
Bridge, the first two-way H bridge include the first control switch pipe, the second control switch pipe, third control switch pipe and the 4th control
Switching tube processed, there are first node, the third controls between the first control switch pipe and the second control switch pipe
There are second node, the first control switch pipe and third controls to open between switching tube and the 4th control switch pipe
Close between pipe that there are third nodes, there are fourth node between the second control switch pipe and the 4th control switch pipe,
The first node and the second node are for connecting AC power source or the load, the third node and Section four described
For point for connecting the two-way DC converter, the third node and the fourth node are also used to connect the Unidirectional direct-current
Converter.
8. onboard charger according to claim 1, which is characterized in that the two-way DC converter includes: second pair
To H bridge, the first transformer connect with the described second two-way H bridging, and the two-way H of third being connect with first transformer
Bridge；
The second two-way H bridge includes the 5th control switch pipe, the 6th control switch pipe, the 7th control switch pipe and the 8th control
Switching tube processed, there are the 5th node, the 7th controls between the 5th control switch pipe and the 6th control switch pipe
There are the 6th node, the 5th control switch pipe and the 7th controls to open between switching tube and the 8th control switch pipe
Close between pipe that there are the 7th nodes, there are the 8th node between the 6th control switch pipe and the 8th control switch pipe,
Wherein, the 7th node and the 8th node be for connecting the AC/DC convertor, the 7th node and described the
Eight nodes are also used to connect the Unidirectional direct-current converter, the 5th node and the 6th node for connecting described first
One side of transformer；
The two-way H bridge of third includes the 9th control switch pipe, the tenth control switch pipe, the 11st control switch pipe and the tenth
Two control switch pipes, there are the 9th node between the 9th control switch pipe and the tenth control switch pipe, the described tenth
There are protelum point, the 9th control switch pipes and described between one control switch pipe and the 12nd control switch pipe
There are the 11st nodes between 11 control switch pipes, between the tenth control switch pipe and the 12nd control switch pipe
There are the 12nd nodes, wherein and the 9th node and protelum point are used to connect the another side of first transformer,
11st node and the 12nd node are for connecting the on-board high-voltage battery.
9. onboard charger according to claim 1, which is characterized in that the Unidirectional direct-current converter includes: the 4th pair
To H bridge, the second transformer connect with the described 4th two-way H bridging, and the control switch group being connect with second transformer
Part；
The 4th two-way H bridge include the 13rd control switch pipe, the 14th control switch pipe, the 15th control switch pipe and
16th control switch pipe, there are the 13rd sections between the 13rd control switch pipe and the 14th control switch pipe
Point, there are the 14th node, the 13rd controls between the 15th control switch pipe and the 16th control switch pipe
There are the 15th node, the 14th control switch pipes and described between switching tube processed and the 15th control switch pipe
There are the 16th nodes between 16 control switch pipes, wherein the 15th node and the 16th node are for connecting
The AC/DC convertor, the 15th node and the 16th node are also used to connect the two-way DC converter,
13rd node and the 14th node are used to connect one side of second transformer；
The another side of second transformer includes the first magnetic induction line and the second magnetic induction line, and the control switch component includes the tenth
Seven control switch pipes, the 18th control switch pipe, wherein the anode of first magnetic induction line connects the 17th control switch
One end of pipe, the cathode of first magnetic induction line are connect with the anode of second magnetic induction line, the cathode of second magnetic induction line
One end of the 18th control switch pipe is connected, between the cathode of first magnetic induction line and the anode of second magnetic induction line
There are the 17th node, there are the 18th node between the 17th control switch pipe and the 18th control switch pipe,
17th node and the 18th node are for connecting the vehicle-mounted A-battery.
10. a kind of control method of onboard charger, which is characterized in that the onboard charger includes controller, respectively with institute
AC/DC convertor, two-way DC converter and the Unidirectional direct-current converter of controller connection are stated, the AC converter is logical
It crosses the first DC bus to connect with the two-way DC converter, the two-way DC converter passes through the second DC bus and vehicle
Carry high-tension battery connection；The Unidirectional direct-current converter is connected in parallel on first DC bus, the Unidirectional direct-current converter
It is connect with vehicle-mounted A-battery, which comprises
Control instruction is obtained by the controller；
When the control instruction is charging instruction, the AC/DC convertor is controlled for the exchange of input by the controller
Electricity is converted to the direct current of output and obtains first voltage, and controls the two-way DC converter and turn the first voltage of input
It is changed to the second voltage for on-board high-voltage battery charging of output；Wherein, the first voltage is the first DC bus
On voltage；
When the control instruction is electric discharge instruction, institute of the two-way DC converter by input is controlled by the controller
It states second voltage and is converted to the first voltage of output, and control the AC/DC convertor and be converted to the direct current of input
The alternating current for being load supplying of output.
11. according to the method described in claim 10, it is characterized in that, the method also includes:
After for the on-board high-voltage battery charging complete, controlling the two-way DC converter by the controller will be inputted
The second voltage be converted to the first voltage of output, and control the Unidirectional direct-current converter for described the of input
One voltage is converted to the tertiary voltage of output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810273420.5A CN110323811A (en) | 2018-03-29 | 2018-03-29 | Onboard charger and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810273420.5A CN110323811A (en) | 2018-03-29 | 2018-03-29 | Onboard charger and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224419A (en) * | 2020-03-03 | 2020-06-02 | 阳光电源股份有限公司 | Energy storage inverter |
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| US20160172877A1 (en) * | 2014-12-16 | 2016-06-16 | Lingxiao Xue | Optimal Battery Current Waveform for Bidirectional PHEV Battery Charger |
| CN107662498A (en) * | 2016-07-28 | 2018-02-06 | 比亚迪股份有限公司 | Electric automobile, the multifunctional vehicle mounted charger of electric automobile and its control method |
| CN107696863A (en) * | 2016-08-08 | 2018-02-16 | 比亚迪股份有限公司 | EMS and its control method, the electric automobile of electric automobile |
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| CN103887875A (en) * | 2014-03-20 | 2014-06-25 | 浙江大学 | Power device |
| US20160172877A1 (en) * | 2014-12-16 | 2016-06-16 | Lingxiao Xue | Optimal Battery Current Waveform for Bidirectional PHEV Battery Charger |
| CN107662498A (en) * | 2016-07-28 | 2018-02-06 | 比亚迪股份有限公司 | Electric automobile, the multifunctional vehicle mounted charger of electric automobile and its control method |
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