CN217099688U - Electric automobile charging and driving integrated topology device with single-phase/three-phase interface - Google Patents
Electric automobile charging and driving integrated topology device with single-phase/three-phase interface Download PDFInfo
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- CN217099688U CN217099688U CN202123325861.1U CN202123325861U CN217099688U CN 217099688 U CN217099688 U CN 217099688U CN 202123325861 U CN202123325861 U CN 202123325861U CN 217099688 U CN217099688 U CN 217099688U
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Abstract
The utility model discloses a single-phase/three-phase interface electric automobile charging and driving integrated topology device, which adopts a three-phase full-bridge converter I, a three-phase full-bridge converter II, a three-phase middle tap winding-opening motor and a change-over switch K1-K2; the change-over switch K1 is a triple switch, and the change-over switch K2 is a single-way switch; determining whether the charging mode is a single-phase charging mode or a three-phase charging mode by controlling the open/close state of the changeover switch K1; the change-over switch K2 is a charging interface of a single-phase/three-phase power grid; the utility model is an integrated bidirectional vehicle-mounted power converter, which can not only feed back the energy of the storage battery of the electric automobile to the electric network, but also complete the charging function of the storage battery; the charging system has single-phase and three-phase charging/discharging interfaces, realizes multiple charging of one machine, reduces the volume and cost of the charging machine, and enhances the compactness of the integrated system.
Description
Technical Field
The utility model relates to an on-vehicle integrated topology field that charges of electric automobile, concretely relates to single phase/three phase interface's electric automobile charges and drives integrated topology device.
Background
With the development of a future smart power grid, a large-scale electric automobile is connected to the power grid, so that the electric automobile has a V2G function. The vehicle-mounted bidirectional power converter becomes a key device, and not only can energy be fed back to a power grid, but also the power battery can be charged. The vehicle-mounted charger and the motor driving device are two indispensable electric devices of the electric automobile. Because the vehicle-mounted charger and the motor driving system both utilize the power electronic conversion technology, two systems with different functions can share the power electronic converter, so that the size and the weight can be reduced, and the cost can be reduced. Besides sharing the power electronic converter, other students utilize the motor winding to serve as the filter inductor of the charger, namely the motor is shared, the integrated charger realized by the scheme has no electric isolation function, the power grade is limited, and the extra filter inductor is added, so that the charging of a plurality of interfaces cannot be realized.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a single phase/three phase interface's electric automobile charges and drives integrated topological device, simple structure, and a tractor serves several purposes fills, can realize single-phase filling slowly, and the three-phase fills soon, but energy bidirectional flow moreover.
In order to achieve the above object, the present invention provides an electric vehicle charging and driving integrated topology device with single-phase/three-phase interface, including a three-phase full-bridge converter I, a three-phase full-bridge converter ii, a three-phase center-tapped winding motor, a switch K1, and a switch K2, wherein the switch K1 is a triple switch, the switch K2 is a single-way switch, the c-terminal of the switch K1 is connected to the positive terminal of a power battery power supply, and the 1-terminal of the switch K1 is connected to the positive terminal of a filter capacitor, the first input terminal of the three-phase full-bridge converter I, and the first input terminal of the three-phase full-bridge converter ii; the negative end of the filter capacitor is connected with the power battery power supply negative electrode, the second input end of the three-phase full-bridge converter I and the second input end of the three-phase full-bridge converter II; the output of three-phase full-bridge converter I, three-phase full-bridge converter II is connected with the open winding motor of three-phase center tap, BAT end, AC + end, the AC-end of the open winding motor of three-phase center tap link to each other with change over switch K2's three input respectively, change over switch K2's first output links to each other with change over switch K1's 2 ends, change over switch K2's second output, third output link to each other with the both ends of the single-phase electric wire netting interface that charges respectively, just change over switch K2's three output links to each other with the three port of three-phase electric wire netting interface that charges respectively.
Preferably, the three-phase full-bridge converter I includes a first bridge arm, a second bridge arm, and a third bridge arm that are arranged in parallel, each bridge arm is provided with 2 series-connected fully-controlled power switching devices, upper portions of the first bridge arm, the second bridge arm, and the third bridge arm are collected to form a first input end, and lower portions of the first bridge arm, the second bridge arm, and the third bridge arm are collected to form a second input end.
Preferably, a first output end of a three-phase full-bridge inverter I is formed in the middle of the first bridge arm, a second output end of the three-phase full-bridge inverter I is formed in the middle of the second bridge arm, a third output end of the three-phase full-bridge inverter I is formed in the middle of the third bridge arm, the first output end of the three-phase full-bridge inverter I is connected with the end a1 of the three-phase center-tapped open-winding motor, the second output end of the three-phase full-bridge inverter I is connected with the end B1 of the three-phase center-tapped open-winding motor, and the third output end of the three-phase full-bridge inverter I is connected with the end C1 of the three-phase center-tapped open-winding motor.
Preferably, the three-phase full-bridge converter ii includes a fourth bridge arm, a fifth bridge arm, and a sixth bridge arm that are arranged in parallel, each bridge arm is provided with 2 series-connected fully-controlled power switching devices, upper portions of the fourth bridge arm, the fifth bridge arm, and the sixth bridge arm are collected to form a first input end, and lower portions of the fourth bridge arm, the fifth bridge arm, and the sixth bridge arm are collected to form a second input end.
Preferably, a first output end of a three-phase full-bridge converter ii is formed in the middle of the fourth bridge arm, a second output end of the three-phase full-bridge converter ii is formed in the middle of the fifth bridge arm, a third output end of the three-phase full-bridge converter ii is formed in the middle of the sixth bridge arm, the first output end of the three-phase full-bridge converter ii is connected with the end a2 of the three-phase center-tapped open-winding motor, the second output end of the three-phase full-bridge converter ii is connected with the end B2 of the three-phase center-tapped open-winding motor, and the third output end of the three-phase full-bridge converter ii is connected with the end C2 of the three-phase center-tapped open-winding motor.
Has the advantages that:
compared with the prior art, the utility model discloses a three-phase full-bridge converter I, three-phase full-bridge converter II, three-phase take the open winding motor of center tap and change over switch K1 ~ K2 mode of combining together, through the switch-on, the off-state of control change over switch K1 ~ K2, realize single-phase/three-phase charging to and the switching of charge mode and drive mode; when the electric automobile is in a single-phase charging mode, the end c and the end 2 of the change-over switch K1 are connected and simultaneously connected with the first output end of the change-over switch K2, and the second output end and the third output end of the change-over switch K2 are respectively connected to a single-phase power grid charging interface; when the electric automobile is in a three-phase charging mode, the end c of the change-over switch K1 is connected with the end 1, and the three-phase power grid interface is connected with the three output ends of the change-over switch K2; when the electric vehicle is in the drive mode, the end c and the end 1 of the switch K1 are connected, and the switch K2 is in the off state.
The utility model has the advantages of as follows:
1. the energy of the integrated vehicle-mounted charger can flow in two directions.
2. One machine can charge more than one, and three-phase and single-phase charging interfaces can be used.
3. The integrated vehicle-mounted charger does not need to additionally increase power devices and passive devices, so that the hardware cost is reduced.
4. The three-phase open winding motor with taps can realize the function of a multi-phase winding motor.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
fig. 2 is a topology of the present invention in a drive mode;
fig. 3 is a topology diagram of the present invention in a single-phase charging mode;
fig. 4 is a topology of the present invention in a three-phase charging mode;
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides an electric vehicle charging and driving integrated topology device with a single-phase/three-phase interface, which includes a three-phase full-bridge converter I, a three-phase full-bridge converter ii, an open-winding motor with a three-phase center tap, and switches K1 and K2, where the switch K1 is a triple switch, and the switch K2 is a single-way switch; the three-phase full-bridge converter I consists of a first bridge arm, a second bridge arm and a third bridge arm; the three-phase full-bridge converter II consists of fourth to sixth bridge arms.
The c end of the change-over switch K1 is connected with the positive electrode of the power battery power supply, and the 1 end of the change-over switch K1 is connected with the positive end of the filter capacitor, the input end of the three-phase full-bridge converter I and the input end of the three-phase full-bridge converter II; the negative end of the filter capacitor is connected with the power battery power supply negative electrode, the second input end of the three-phase full-bridge converter I and the second input end of the three-phase full-bridge converter II;
the first output end to the third output end of the three-phase full-bridge converter I are respectively connected with the A1 end, the B1 end and the C1 end of the three-phase center-tapped open-winding motor;
the first output end to the third output end of the three-phase full-bridge converter II are respectively connected with the A2 end, the B2 end and the C2 end of the three-phase center-tapped open-winding motor;
the BAT end, the AC + end and the AC-end of the three-phase center-tapped open-winding motor are respectively connected with three input ends of a change-over switch K2;
a first output end of the change-over switch K2 is connected with the 2-end of the change-over switch K1, a second output end and a third output end of the change-over switch K2 are respectively connected with two ends of a single-phase power grid charging interface, and meanwhile, three output ends of the change-over switch K2 are respectively connected with three ports of a three-phase power grid charging interface;
when the electric automobile is in a single-phase charging mode, the end c and the end 2 of the change-over switch K1 are connected and simultaneously connected with the first output end of the change-over switch K2, and the second output end and the third output end of the change-over switch K2 are respectively connected to a single-phase power grid charging interface;
when the electric automobile is in a three-phase charging mode, the end c of the change-over switch K1 is connected with the end 1, and the three-phase power grid interface is connected with the three output ends of the change-over switch K2;
when the electric vehicle is in the drive mode, the end c and the end 1 of the switch K1 are connected, and the switch K2 is in the off state.
As shown in fig. 2, when the electric vehicle is in the driving mode, the end c and the end 1 of the switch K1 are connected, the switch K2 is in the off state, the power supply of the power battery is inverted into three-phase alternating current through the three-phase full-bridge converter I and the three-phase full-bridge converter I, and the output side of the power battery is connected to the three-phase open-winding motor.
As shown in fig. 3, when the electric vehicle is in the single-phase charging mode, the end c of the switch K1 is connected to the end 2, the end 2 of the switch K1 is connected to the first output end of the switch K2, and the second and third output ends of the switch K2 are respectively connected to the single-phase grid charging interface. One end of single-phase alternating current is connected to the midpoint AC + of the winding A, the A1 and A2 ends of the winding A are respectively connected to the output ends of the first bridge arm and the fourth bridge arm, the other end of the single-phase alternating current is connected to the midpoint AC-of the winding B, the B1 and B2 ends of the winding B are respectively connected to the output ends of the second bridge arm and the fifth bridge arm, the first input ends of the first bridge arm to the sixth bridge arm are connected, and the second input ends of the first bridge arm to the sixth bridge arm are connected; two ends of the capacitor are respectively connected with two ends of the first bridge arm to the sixth bridge arm; the output ends of the third and sixth bridge arms are respectively connected with the ends C1 and C2 of the winding C; the midpoint BAT of the winding C is connected with the positive end of the power battery; and the negative end of the power battery is connected with the second input ends of the first bridge arm to the sixth bridge arm.
As shown in fig. 4, when the electric vehicle is in the three-phase charging mode, the terminal c of the switch K1 is connected to the terminal 1, the three-phase grid interface is connected to the three output terminals of the switch K2, and the switch K2 is in a closed state. The first end of the three-phase alternating current is connected to the midpoint AC + of the winding A, and the A1 and A2 ends of the winding A are respectively connected to the output ends of the first bridge arm and the fourth bridge arm; the second end of the three-phase alternating current is connected to the midpoint AC of the winding B, and the ends B1 and B2 of the winding B are respectively connected to the output ends of the second bridge arm and the fifth bridge arm; a third end of the three-phase alternating current is connected to a midpoint BAT of the winding C, and ends B1 and B2 of the winding B are respectively connected to output ends of the second bridge arm and the fifth bridge arm; the first input ends of the first bridge arm, the second bridge arm and the sixth bridge arm are connected with the positive end of the power battery and one end of the capacitor; and second input ends of the first bridge arm, the second bridge arm, the third bridge arm and the fourth bridge arm are connected with the negative end of the power battery and the other end of the capacitor.
In the embodiment, a mode of combining a three-phase full-bridge converter I, a three-phase full-bridge converter II, a three-phase motor with an open winding and a tap, and change-over switches K1-K2 is adopted, and the on-off states of the change-over switches K1-K2 are controlled, so that the bidirectional flow of energy, and the switching of a charging mode and a driving mode are realized.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The electric automobile charging and driving integrated topology device with the single-phase/three-phase interface is characterized by comprising a three-phase full-bridge converter I, a three-phase full-bridge converter II, a three-phase center-tapped open-winding motor, a change-over switch K1 and a change-over switch K2, wherein the change-over switch K1 is a triple switch, the change-over switch K2 is a single-way switch, the c end of the change-over switch K1 is connected with the positive electrode of a power battery power supply, and the 1 end of the change-over switch K1 is connected with the positive end of a filter capacitor, the first input end of the three-phase full-bridge converter I and the first input end of the three-phase full-bridge converter II; the negative end of the filter capacitor is connected with the power battery power supply negative electrode, the second input end of the three-phase full-bridge converter I and the second input end of the three-phase full-bridge converter II; the output of three-phase full-bridge converter I, three-phase full-bridge converter II is connected with the open winding motor of three-phase center tap, BAT end, AC + end, the AC-end of the open winding motor of three-phase center tap link to each other with change over switch K2's three input respectively, change over switch K2's first output links to each other with change over switch K1's 2 ends, change over switch K2's second output, third output link to each other with the both ends of the single-phase electric wire netting interface that charges respectively, just change over switch K2's three output links to each other with the three port of three-phase electric wire netting interface that charges respectively.
2. The single-phase/three-phase interface electric vehicle charging and driving integrated topology device as claimed in claim 1, wherein the three-phase full-bridge converter I comprises a first bridge arm, a second bridge arm and a third bridge arm which are arranged in parallel, each bridge arm is provided with 2 series-connected fully-controlled power switch devices, upper portions of the first bridge arm, the second bridge arm and the third bridge arm are collected to form a first input end, and lower portions of the first bridge arm, the second bridge arm and the third bridge arm are collected to form a second input end.
3. The integrated topology device for charging and driving electric vehicle with single/three phase interface as claimed in claim 2, wherein a first output terminal of a three-phase full-bridge inverter I is formed in the middle of the first bridge arm, a second output terminal of a three-phase full-bridge inverter I is formed in the middle of the second bridge arm, a third output terminal of a three-phase full-bridge inverter I is formed in the middle of the third bridge arm, the first output terminal of the three-phase full-bridge inverter I is connected with a terminal a1 of the three-phase center-tapped open-winding motor, the second output terminal of the three-phase full-bridge inverter I is connected with a terminal B1 of the three-phase center-tapped open-winding motor, and the third output terminal of the three-phase full-bridge inverter I is connected with a terminal C1 of the three-phase center-tapped open-winding motor.
4. The single-phase/three-phase interface electric vehicle charging and driving integrated topology device as claimed in claim 1, wherein the three-phase full-bridge converter ii comprises a fourth bridge arm, a fifth bridge arm and a sixth bridge arm which are arranged in parallel, each bridge arm is provided with 2 series-connected fully-controlled power switching devices, upper parts of the fourth bridge arm, the fifth bridge arm and the sixth bridge arm are collected to form a first input end, and lower parts of the fourth bridge arm, the fifth bridge arm and the sixth bridge arm are collected to form a second input end.
5. The integrated topology device for charging and driving electric vehicle with single-phase/three-phase interface of claim 4, wherein a first output terminal of a three-phase full-bridge inverter II is formed in the middle of the fourth bridge arm, a second output terminal of a three-phase full-bridge inverter II is formed in the middle of the fifth bridge arm, a third output terminal of a three-phase full-bridge inverter II is formed in the middle of the sixth bridge arm, the first output terminal of the three-phase full-bridge inverter II is connected with the A2 terminal of the three-phase center-tapped open-winding motor, the second output terminal of the three-phase full-bridge inverter II is connected with the B2 terminal of the three-phase center-tapped open-winding motor, and the third output terminal of the three-phase full-bridge inverter II is connected with the C2 terminal of the three-phase center-tapped open-winding motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123325861.1U CN217099688U (en) | 2021-12-27 | 2021-12-27 | Electric automobile charging and driving integrated topology device with single-phase/three-phase interface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123325861.1U CN217099688U (en) | 2021-12-27 | 2021-12-27 | Electric automobile charging and driving integrated topology device with single-phase/three-phase interface |
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| CN217099688U true CN217099688U (en) | 2022-08-02 |
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| CN202123325861.1U Active CN217099688U (en) | 2021-12-27 | 2021-12-27 | Electric automobile charging and driving integrated topology device with single-phase/three-phase interface |
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