KR20210084755A - Battery wired/wireless charging system using motor control system for vehicle and operation method thereof - Google Patents

Abstract

According to a preferred embodiment of the present invention, a wired or wireless battery charging system using a vehicle motor control system comprises: a first inverter unit configured to operate a first motor of a vehicle, and converting voltage of first power connected through a wire into battery charging voltage appropriate for charging of a vehicle battery according to a wired charging mode; and a second inverter unit configured to operate a second motor of the vehicle, and converting voltage of wirelessly connected second power into battery charging voltage appropriate for charging of the vehicle battery according to a wireless charging mode.

Description

Wired/wireless battery charging system using a vehicle motor control system and its operation method {BATTERY WIRED/WIRELESS CHARGING SYSTEM USING MOTOR CONTROL SYSTEM FOR VEHICLE AND OPERATION METHOD THEREOF}

The present invention relates to a battery charging system, for example, to a battery wired/wireless charging system using a motor control system for a vehicle and an operating method thereof.

Eco-friendly vehicles are equipped with an engine and a motor at the same time, such as HEV (Hybrid Electric vehicle), PHEV (Plug-in Hybrid Electric vehicle), and EV (Electric vehicle), and a high-voltage battery to operate the motor and internal electric system. .

Among the conventional eco-friendly vehicles, in the case of a plug-in hybrid vehicle (PHEV) or an electric vehicle (EV), a high voltage battery is charged through an external power source.

When a conventional eco-friendly vehicle charges a high voltage battery by wire, an external alternating current (AC) power charging system is connected to a vehicle-mounted wired charging system mounted inside the vehicle to perform charging.

The detailed operation of the vehicle-mounted wired charging system is as follows.

First, AC-DC energy conversion is performed using the PFC circuit inside the on-board charger for AC power delivered from an external commercial power system.

Second, according to the level of the battery voltage, the converted DC energy is boosted or stepped down using an internal DC-DC converter and transferred to the battery.

In the case of wireless charging of a high-voltage battery of a conventional eco-friendly vehicle, energy transmitted from a coil of an external wireless charging system is transferred through a vehicle-mounted wireless charging system mounted inside the vehicle to perform charging.

The detailed operation of the wireless charging system outside the vehicle is as follows.

First, AC-DC energy conversion is performed through the PFC system of the external wireless charging system for AC power delivered from an external commercial power system.

Second, the converted DC energy is converted into high-frequency AC energy through the power conversion device of the external wireless charging system.

Third, the converted high-frequency AC energy is transmitted through the TX Coil inside the power converter of the external wireless charging system.

The detailed operation of the in-vehicle wireless charging system is as follows.

First, the transmission energy transmitted from the transmission coil (TX Coil) inside the power converter of the external wireless charging system is received through the reception coil (RX Coil) of the wireless charging system inside the vehicle.

Second, the energy received through the RX Coil of the in-vehicle wireless charging system is converted into DC energy through the rectification system of the in-vehicle wireless charging system.

Third, the converted DC energy is boosted or stepped down through an internal DC-DC power converter according to the level of the battery voltage and delivered to the battery.

As described above, when an eco-friendly vehicle performs wired charging and wireless charging, each charging system must be mounted in the vehicle, and thus problems such as increase in system volume and weight, increase in material cost, and reduction in efficiency occur.

In addition, in the case of the conventional charging system, only a wired charging method can be used for wired charging, and only a wireless charging method can be used for wireless charging, so that the charging speed of the high voltage battery takes a long time.

Republic of Korea Patent Publication No. 10-1974507

Accordingly, the present invention has been devised in view of the above circumstances, and a battery wired and wireless charging system using a vehicle motor control system using a starter motor system for wired charging of a high voltage battery and a driving motor system for wireless charging of a high voltage battery, and its It aims to provide a method of operation of

In order to achieve the above object, a battery wired/wireless charging system using a motor control system for a vehicle according to a preferred embodiment of the present invention is configured to drive a first motor of the vehicle, and the voltage of the first power source connected by wire according to a wired charging mode a first inverter unit that converts the ? into a battery charging voltage suitable for charging the vehicle battery; and a second inverter unit configured to drive the second motor of the vehicle, and converting the voltage of the second power source connected wirelessly according to the wireless charging mode into a battery charging voltage suitable for charging the vehicle battery.

The method of claim 1, wherein the first inverter unit and the second inverter unit are capable of rapidly charging the vehicle battery by simultaneously operating according to a wired/wireless charging mode.

The first inverter unit may include a PFC system for converting the AC voltage of the first power source into a DC voltage, and a first DC-DC converter for converting the DC voltage converted by the PFC system into the battery charging voltage. have.

The PFC system includes a plurality of driving switches constituting an H-bridge circuit that converts the AC voltage of the first power source into a DC voltage through a switching operation, and the first power source and the plurality of the plurality of switches through a turn-on or turn-off operation It may include a plurality of connection switches for connecting the driving switches of , or connecting and disconnecting each phase of the first motor and the plurality of driving switches.

The plurality of driving switches may include a third driving switch connected between a positive voltage terminal of the battery and the first power source, and between a positive voltage terminal of the battery and a V phase of the first motor, and a negative voltage terminal of the battery. a fourth driving switch connected between a voltage terminal and the first power source and between a negative voltage terminal of the battery and a V phase of the first motor, between a positive voltage terminal of the battery and the first power source, and the battery a fifth driving switch connected between the positive voltage terminal of , and the W phase of the first motor, and between the negative voltage terminal of the battery and the first power source, and between the negative voltage terminal of the battery and W of the first motor A sixth driving switch connected between the phases may be included.

The plurality of connection switches may include a seventh connection switch connected between the first power supply and the third driving switch and between the first power supply and the fourth driving switch, the V phase of the first motor and the second driving switch. an eighth connection switch connected between three driving switches and between the V phase of the first motor and the fourth driving switch, between the W phase of the first motor and the fifth driving switch, and the first motor It may include a ninth connection switch connected between the W phase and the fifth driving switch, and a tenth connection switch connected between the neutral point of the first motor and a positive voltage terminal of the battery.

The first DC-DC converter includes a pair of driving switches constituting a pole circuit for converting the DC voltage converted by the PFC system into the battery charging voltage, between the positive voltage terminal of the battery and one end of the pole circuit Doedoe connected to, may include a sixth connection switch that is turned off according to the wired charging mode.

The pair of driving switches includes a first driving switch connected between a positive voltage terminal of the battery and a U-phase of the first motor, and a negative voltage terminal of the battery and a U-phase of the first motor connected between A second driving switch may be included.

The second inverter unit includes a diode rectification system for converting the AC voltage of the second power source into a DC voltage, and a second DC-DC converter for converting the DC voltage converted by the diode rectification system into the battery charging voltage. can do.

The diode rectification system includes a plurality of switching elements constituting an H-bridge circuit that converts an AC voltage of the second power source into a DC voltage through a switching operation, and the second power source and the second power source through a turn-on or turn-off operation It may include a plurality of connection switches that connect a plurality of switching elements or connect and disconnect each phase of the second motor and the plurality of switching elements.

The plurality of switching elements include a first switching element connected between a positive voltage terminal of the battery and the second power source, and between a positive voltage terminal of the battery and a W phase of the second motor, and a negative voltage terminal of the battery. a second switching element connected between a voltage terminal and the second power source and between a negative voltage terminal of the battery and a W phase of the second motor, between a positive voltage terminal of the battery and the second power source, and the battery A third switching element connected between the positive voltage terminal of , and the V phase of the second motor, and between the negative voltage terminal of the battery and the second power source, and between the negative voltage terminal of the battery and V of the second motor A fourth switching element connected between the phases may be included.

The plurality of connection switches may include a first connection switch connected between the second power source and the third switching element, and between the second power source and the fourth switching element, the V phase of the second motor and the second switching element. A third connection switch connected between three switching elements and between the V phase of the second motor and the fourth switching element, between the W phase of the second motor and the first switching element, and the second motor It may include a fourth connection switch connected between the W phase of and the first switching element, and a fifth connection switch connected between the neutral point of the second motor and a positive voltage terminal of the battery.

The second DC-DC converter includes a pair of switching elements constituting a pole circuit for converting the DC voltage converted by the diode rectification system into the battery charging voltage, and a positive voltage terminal of the battery and the pole circuit. Doedoe connected between one end, it may include a second connection switch that is turned off according to the wireless charging mode.

The pair of switching elements includes a fifth switching element connected between the positive voltage terminal of the battery and the U-phase of the second motor, and a fifth switching element connected between the negative voltage terminal of the battery and the U-phase of the second motor. A sixth switching element may be included.

In order to achieve the above object, the method of operating a battery wired/wireless charging system using a vehicle motor control system according to a preferred embodiment of the present invention uses a first inverter unit for driving a first motor of the vehicle when operating in a wired charging mode. a wired charging step of converting the voltage of the first power connected by wire to a battery charging voltage; and a wireless charging step of converting a voltage of a wirelessly connected second power source to a battery charging voltage using a second inverter unit for driving a second motor of the vehicle when operating in the wireless charging mode.

Wired/wireless charging that converts the voltage of the first power to a battery charging voltage and converts the voltage of the second power to a battery charging voltage using the first inverter unit and the second inverter unit simultaneously when operating in a wired/wireless charging mode may include steps.

According to a battery wired and wireless charging system using a vehicle motor control system and an operating method thereof according to a preferred embodiment of the present invention, a starting motor system is used for wired charging of a high voltage battery, and a driving motor system is used for wireless charging of a high voltage battery. Accordingly, since it is not necessary to additionally provide a battery charging system, there is an effect of reducing the volume of the system, reducing the weight, reducing the price, and increasing the charging efficiency.

In addition, there is an effect that wired charging, wireless charging, and simultaneous wired and wireless charging of the battery are possible using the starting motor system and the driving motor system.

In addition, there is an effect that the battery charging time is reduced according to the simultaneous wired and wireless charging.

1 is a circuit diagram of a battery wired/wireless charging system using a vehicle motor control system according to a preferred embodiment of the present invention.
2 is a first diagram illustrating a signal flow according to a PFC operation mode during wired charging.
3 is a second diagram illustrating a signal flow according to a PFC operation mode during wired charging.
4 is a third diagram illustrating a signal flow according to a PFC operation mode during wired charging.
5 is a fourth diagram illustrating a signal flow according to a PFC operation mode during wired charging.
6 is a first diagram illustrating a signal flow according to a power conversion operation mode during wired charging.
7 is a second diagram illustrating a signal flow according to a power conversion operation mode during wired charging.
8 is a first diagram illustrating a signal flow according to a rectifying operation mode during wireless charging.
9 is a second diagram illustrating a signal flow according to a rectifying operation mode during wireless charging.
10 is a first diagram illustrating a signal flow according to a step-down operation mode during wireless charging.
11 is a second diagram illustrating a signal flow according to a step-down operation mode during wireless charging.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, preferred embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited thereto and may be variously implemented by those skilled in the art without being limited thereto.

1 is a circuit diagram of a battery wired/wireless charging system using a vehicle motor control system according to a preferred embodiment of the present invention.

Referring to FIG. 1 , a battery wired/wireless charging system 10 using a motor control system for a vehicle according to a preferred embodiment of the present invention includes a first inverter unit 100 and a second inverter unit 200 .

The first inverter unit 100 may be configured to drive a first motor (hereinafter, referred to as a starter motor (HSG)) of the vehicle when the vehicle is started. The first inverter unit 100 may operate according to a wired charging mode during wired charging of the vehicle's battery BATT. The first inverter unit 100 may convert the voltage of the first power (hereinafter, referred to as the AC power unit 111 ) connected by wire into a battery charging voltage suitable for charging the vehicle battery BATT.

The second inverter unit 200 may be configured to drive a second motor (hereinafter, referred to as a driving motor (MOT)) of the vehicle when the vehicle is driven. The second inverter unit 200 may operate according to a wireless charging mode during wireless charging of the vehicle's battery BATT. The second inverter unit 200 may convert the voltage of the wirelessly connected second power source (hereinafter, the wireless receiving unit 211 ) into a battery charging voltage suitable for charging the vehicle battery.

The first inverter unit 100 may include a PFC system 110 and a first DC-DC converter 120 .

The PFC system 110 may be configured to improve the power factor of the AC voltage of the AC power supply unit 111 during wired charging and convert it into a DC voltage. Here, the AC power supply unit 111 may include an AC power source (AC) of a commercial power system and a first inductor (L1).

The PFC system 110 may include a plurality of driving switches Sb3, Sb4, Sb5, and Sb6 constituting the H-bridge circuit and a plurality of connection switches SW7, SW8, SW9, and SW10.

The plurality of driving switches Sb3, Sb4, Sb5, and Sb6 may include a third driving switch Sb3, a fourth driving switch Sb4, a fifth driving switch Sb5, and a sixth driving switch Sb6. have.

In an embodiment, the third driving switch Sb3 , the fourth driving switch Sb4 , the fifth driving switch Sb5 , and the sixth driving switch Sb6 may be a MOSFET device.

The third driving switch Sb3 may have a drain terminal connected to a positive voltage terminal of the battery BATT. The third driving switch (Sb3), the source terminal may be connected to each of the V-phase (V1) and the AC power source (AC) of the starting motor (HSG).

The fourth driving switch Sb4 may have a source terminal connected to a negative voltage terminal of the battery BATT. The fourth driving switch Sb4 may have a drain terminal connected to each of the V phase V1 and the AC power source AC of the starting motor HSG.

The fifth driving switch Sb5 may have a drain terminal connected to a positive voltage terminal of the battery BATT. The fifth driving switch Sb5 has a source terminal connected to each of the W-phase W1 and the first inductor L1 of the starting motor HSG.

The sixth driving switch Sb6 may have a drain terminal connected to a negative voltage terminal of the battery BATT. The sixth driving switch Sb6 has a source terminal connected to each of the W phase W1 and the first inductor L1 of the starting motor HSG.

The plurality of driving switches Sb3, Sb4, Sb5, and Sb6 may be used to convert the AC power AC into a DC voltage by performing a switching operation by a controller (not shown).

The plurality of connection switches SW7, SW8, SW9, SW10 may include a seventh connection switch SW7, an eighth connection switch SW8, a ninth connection switch SW9, and a tenth connection switch SW10. have.

The seventh connection switch SW7 may be provided for connection and disconnection of the AC power source (AC). The seventh connection switch SW7 may have one end connected to each of the third driving switch Sb3 and the fourth driving switch Sb4 , and the other end connected to the AC power source AC. The seventh connection switch SW7 may be turned on or turned off by the controller.

The eighth connection switch SW8 may have one end connected to each of the third driving switch Sb3 and the fourth driving switch Sb4 , and the other end connected to the V-phase V1 of the starting motor HSG.

The ninth connection switch SW9 may have one end connected to each of the fifth driving switch Sb5 and the sixth driving switch Sb6 and the other end connected to the W phase W1 of the starting motor HSG.

The tenth connection switch SW10 may have one end connected to the positive voltage terminal of the battery BATT and the other end connected to the neutral point NP1 of the starter motor HSG. Here, the neutral point NP1 represents a contact point where the U phase U1, the V phase V1, and the W phase W1 of the starting motor HSG meet.

A plurality of connection switches (SW7, SW8, SW9, SW10) are turned on or off by a control unit (not shown) and can be used to convert AC power (AC) into DC voltage. have.

The first DC-DC converter 120 may be configured to transform the current voltage converted by the PFC system 110 into a battery charging voltage suitable for charging the battery during wired charging.

The first DC-DC converter 120 may include a pair of driving switches Sb1 and Sb2, a sixth connection switch SW6, and a first capacitor C1 constituting a pole circuit to transform a DC voltage. can

The pair of driving switches Sb1 and Sb2 may include a first driving switch Sb1 and a second driving switch Sb2.

In an embodiment, the first driving switch Sb1 and the second driving switch Sb2 may be MOSFET devices.

The first driving switch Sb1 may have a drain terminal connected to a positive voltage terminal of the battery BATT. The first driving switch (Sb1), the source terminal may be connected to the U-phase (U1) of the starting motor (HSG).

The second driving switch Sb2 may have a source terminal connected to a negative voltage terminal of the battery BATT. The second driving switch Sb2 may have a drain terminal connected to the U-phase U1 of the starting motor HSG. The first driving switch Sb1 and the second driving switch Sb2 may be connected in series to each other to constitute a pole circuit.

The sixth connection switch SW6 has one end connected to each of the positive voltage terminal of the battery BATT and the neutral point NP1 of the starting motor HSG, and the other end of the first driving switch Sb1, the third driving switch ( Sb3) and the fifth driving switch Sb5, respectively. The sixth connection switch SW6 may be turned off by the controller according to a power conversion mode to be described later.

The first capacitor C1 may be connected in parallel to the battery BATT. The first capacitor C1 may store a DC voltage transformed by the switching operation of the first driving switch Sb1 and the second driving switch Sb2 . The first capacitor C1 may protect the battery BATT from overvoltage.

On the other hand, the PFC system 110 and the first DC-DC converter 120 drives the starter motor (HSG) when starting the vehicle through a combination of a plurality of drive switches Sb1, Sb2, Sb3, Sb4, Sb5, and Sb6. It is possible to implement a three-phase inverter topology for

The second inverter unit 200 may include a diode rectification system 210 and a second DC-DC converter 220 .

The diode rectification system 210 may be configured to convert the AC voltage of the wireless receiver 211 into a DC voltage during wireless charging. Here, the wireless receiver 211 may include a receiving coil Ls to which an AC voltage is applied from an external power source in a magnetic induction manner, a second inductor L2, and a second capacitor C2. The second inductor L2 and the second capacitor C2 may be connected in series to each other to form a resonance tank.

The diode rectification system 210 may include a plurality of switching elements Sa1 , Sa2 , Sa3 , and Sa4 constituting the H-bridge circuit and a plurality of connection switches SW1 , SW3 , SW4 , and SW5 .

The plurality of switching elements Sa1, Sa2, Sa3, and Sa4 may include a first switching element Sa1, a second switching element Sa2, a third switching element Sa3, and a fourth switching element Sa4. have.

In an embodiment, the first switching device Sa1 , the second switching device Sa2 , the third switching device Sa3 , and the fourth switching device Sa4 may be a MOSFET device.

The first switching element Sa1 may have a drain terminal connected to a positive voltage terminal of the battery BATT. The first switching element Sa1 may have a source terminal connected to each of the W phase W2 and the second capacitor C2 of the driving motor MOT.

The second switching element Sa2 may have a source terminal connected to a negative voltage terminal of the battery BATT. The second switching element Sa2 may have a drain terminal connected to each of the W phase W2 and the second capacitor C2 of the driving motor MOT.

The third switching element Sa3 may have a drain terminal connected to a positive voltage terminal of the battery BATT. The third switching element Sa3 may have a source terminal connected to each of the V-phase V2 and the receiving coil Ls of the driving motor MOT.

The fourth switching element Sa4 may have a source terminal connected to a negative voltage terminal of the battery BATT. The fourth switching element Sa4 may have a drain terminal connected to each of the V-phase V2 and the receiving coil Ls of the driving motor MOT.

The plurality of switching elements Sa1, Sa2, Sa3, and Sa4 may be used to convert the AC voltage of the wireless receiver 211 into a DC voltage by performing a switching operation by a controller (not shown).

The plurality of connection switches SW1, SW3, SW4, SW5 may include a first connection switch SW1, a third connection switch SW3, a fourth connection switch SW4, and a fifth connection switch SW5. have.

The first connection switch SW1 may be provided for connection and disconnection of the reception coil Ls. The first connection switch SW1 may have one end connected to the receiving coil Ls, and the other end connected to the third switching element Sa3 and the fourth switching element Sa4, respectively. The first connection switch SW1 may be turned on by the controller during wireless charging.

The third connection switch SW3 may have one end connected to the V-phase V2 of the driving motor MOT. The third connection switch SW3 may have the other end connected to each of the third switching element Sa3 and the fourth switching element Sa4.

The fourth connection switch SW4 may have one end connected to the W phase W2 of the driving motor MOT. The fourth connection switch SW4 may have the other end connected to each of the first switching element Sa1 and the second switching element Sa2 .

The fifth connection switch SW5 may have one end connected to the neutral point NP2 of the driving motor MOT and the other end connected to a positive voltage terminal of the battery BATT. Here, the neutral point NP2 represents a contact point where the U-phase U2, V-phase V2, and W-phase W2 of the driving motor HSG meet.

The plurality of connection switches SW1, SW3, SW4, SW5 are turned on or off by a control unit (not shown) to convert the AC voltage of the wireless receiver 211 into a DC voltage. can be used

The second DC-DC converter 220 may be configured to transform the current voltage converted by the diode rectification system 210 into a battery charging voltage suitable for charging the battery during wireless charging.

The second DC-DC converter 220 may include a pair of switching elements Sa5 and Sa6 , a second connection switch SW2 , and a third capacitor C3 .

The pair of switching elements Sa5 and Sa6 may include a fifth switching element Sa5 and a sixth switching element Sa6.

In one embodiment, the fifth switching element Sa5 and the sixth switching element Sa6 may be MOSFETs.

The fifth switching element Sa5 may have a drain terminal connected to a positive voltage terminal of the battery BATT. The fifth switching element Sa5 may have a source terminal connected to the U-phase U2 of the driving motor MOT.

The sixth switching element Sa6 may have a source terminal connected to a negative voltage terminal of the battery BATT. The sixth switching element Sa6 may have a drain terminal connected to the U-phase U2 of the driving motor MOT. The fifth switching element Sa5 and the sixth switching element Sa6 may be connected in series to each other to constitute a pole circuit.

The second connection switch SW2 has one end connected to each of the first switching element Sa1 , the third switching element Sa3 , and the fifth switching element Sa5 , and the other end of the positive voltage of the battery BATT It may be connected to each of the stage and the neutral point NP2 of the driving motor MOT. The second connection switch SW2 may be turned on or turned off by the controller to be used to transform the DC voltage.

The third capacitor C3 may be connected in parallel to the battery BATT. The third capacitor C3 may store a DC voltage transformed by the switching operation of the fifth and sixth switching elements Sa5 and Sa6 . The third capacitor C3 may protect the battery BATT from overvoltage.

On the other hand, the diode rectification system 210 and the second DC-DC converter 220 drives the driving motor (MOT) when driving the vehicle through a combination of a plurality of switching elements (Sa1, Sa2, Sa3, Sa4, Sa5, Sa6). It is possible to implement a three-phase inverter topology for

Hereinafter, a signal flow according to wired charging and wireless charging of the battery wired/wireless charging system 10 using a vehicle motor control system according to a preferred embodiment of the present invention will be described.

2 is a first diagram illustrating a signal flow according to a PFC operation mode during wired charging.

Referring to FIG. 2 , it can be seen that the battery wired/wireless charging system 10 operates in the PFC operation mode for wired charging of the battery BATT. At this time, the AC power supply unit 111 of the commercial power system may be in a positive state.

First, the seventh connection switch SW7 is turned on according to the first PFC operation mode.

The fourth driving switch Sb4 and the sixth driving switch Sb6 are turned on according to the first PFC operation mode.

The third driving switch Sb3 and the fifth driving switch Sb5 are turned off according to the first PFC operation mode.

At this time, the first signal flow according to the first PFC operation mode appears to sequentially pass through the first inductor L1 , the sixth driving switch Sb6 , the fourth driving switch Sb4 , and the seventh connection switch SW7 . .

3 is a second diagram illustrating a signal flow according to a PFC operation mode during wired charging.

Referring to FIG. 3 , when the AC power supply unit 111 of the commercial power system is in a positive state, a signal flow according to the second PFC operation mode may be confirmed.

The seventh connection switch SW7 continuously maintains the turned-on state.

The fourth driving switch Sb4 and the fifth driving switch Sb5 are turned on according to the second PFC operation mode.

The third driving switch Sb3 and the sixth driving switch Sb6 are turned off according to the second PFC operation mode.

At this time, the second signal flow according to the second PFC operation mode is the fourth driving switch (Sb4), the seventh connection switch (SW7), the AC power source (AC), the first inductor (L1), and the fifth driving switch (Sb5) appear to pass sequentially.

2 and 3, as the first signal flow and the second signal flow according to the first PFC operation mode and the second PFC operation mode are repeatedly performed, the reverse flow of the AC power source (AC) to the AC voltage is improved and the DC voltage is changed. A transformation can be made.

4 is a third diagram illustrating a signal flow according to a PFC operation mode during wired charging.

Referring to FIG. 4 , when the AC power unit 111 of the commercial power system is in a negative state, a signal flow according to the third PFC operation mode may be confirmed.

First, the seventh connection switch SW7 is turned on according to the third PFC operation mode.

The third driving switch Sb3 and the fifth driving switch Sb5 are turned on according to the third PFC operation mode.

The fourth driving switch Sb4 and the sixth driving switch Sb6 are turned off according to the third PFC operation mode.

At this time, the third signal flow according to the third PFC operation mode sequentially passes through the seventh connection switch SW7, the third driving switch Sb3, the fifth driving switch Sb5, and the first inductor L1. .

5 is a fourth diagram illustrating a signal flow according to a PFC operation mode during wired charging.

Referring to FIG. 5 , when the AC power unit 111 of the commercial power system is in a negative state, a signal flow according to the fourth PFC operation mode may be confirmed.

The seventh connection switch SW7 continuously maintains the turned-on state.

The third driving switch Sb3 and the sixth driving switch Sb6 are turned on according to the fourth PFC operation mode.

The fourth driving switch Sb4 and the fifth driving switch Sb5 are turned off according to the fourth PFC operation mode.

At this time, the fourth signal flow according to the fourth PFC operation mode is the sixth driving switch (Sb6), the first inductor (L1), the AC power source (AC), the seventh connection switch (SW7), and the third driving switch (Sb3) appear to pass sequentially.

4 and 5, as the third signal flow and the fourth signal flow according to the third PFC operation mode and the fourth PFC operation mode are repeatedly performed, the reverse flow of the AC power source (AC) to the AC voltage is improved and the DC voltage is changed. A transformation can be made.

6 is a first diagram illustrating a signal flow according to a power conversion operation mode during wired charging.

Referring to FIG. 6 , it can be confirmed that the battery wired/wireless charging system 10 operates in the first power conversion operation mode after the PFC operation mode during wired charging.

The tenth connection switch SW10 is turned on according to the first power conversion operation mode.

The sixth connection switch SW6 , the eighth connection switch SW8 , and the ninth connection switch SW9 operate to be turned off according to the first power conversion operation mode.

The first driving switch Sb1 is turned on according to the first power conversion operation mode.

The second driving switch Sb2 is turned off according to the first power conversion operation mode.

The first signal flow according to the first power conversion operation mode is the first drive switch (Sb1), the U-phase (U1) of the starter motor (HSG), the neutral point (NP1) of the starter motor (HSG), the tenth connection switch (SW10) ), and the battery BATT sequentially.

7 is a second diagram illustrating a signal flow according to a power conversion operation mode during wired charging.

Referring to FIG. 7 , it can be seen that the battery wired/wireless charging system 10 operates in the second power conversion operation mode after the PFC operation mode during wired charging.

The tenth connection switch SW10 is turned on according to the second power conversion operation mode.

The sixth connection switch SW6 , the eighth connection switch SW8 , and the ninth connection switch SW9 operate to be turned off according to the second power conversion operation mode.

The first driving switch Sb1 is turned off according to the second power conversion operation mode.

The second driving switch Sb2 is turned on according to the second power conversion operation mode.

The second signal flow according to the second power conversion operation mode is the second drive switch (Sb2), the U-phase (U1) of the starter motor (HSG), the neutral point (NP1) of the starter motor (HSG), the tenth connection switch (SW10) ), and the battery BATT sequentially.

6 and 7, as the first power conversion operation mode and the second power conversion operation mode are repeatedly performed, the DC voltage converted in the PFC operation mode may be appropriately stepped down to a battery charging voltage suitable for charging the battery BATT. have.

Through this, the battery BATT may be charged by wire, not through a separate wired charging system, but through the first inverter unit 100 driving the starter motor HSG.

8 is a first diagram illustrating a signal flow according to a rectifying operation mode during wireless charging.

Referring to FIG. 8 , it can be seen that the battery wired/wireless charging system 10 operates in the first rectifying operation mode for wireless charging of the battery BATT.

First, the first connection switch SW1 is turned on according to the first rectifying operation mode.

The first switching element Sa1 and the fourth switching element Sa4 are turned on according to the first rectifying operation mode.

The second switching element Sa2 and the third switching element Sa3 are turned off according to the first rectifying operation mode.

At this time, the first signal flow according to the first rectifying operation mode is the fourth switching element Sa4, the first connection switch SW1, the receiving coil Ls, the resonance tanks L2 and C2, and the first switching element Sa1 ) are displayed sequentially.

9 is a second diagram illustrating a signal flow according to a rectifying operation mode during wireless charging.

Referring to FIG. 9 , a signal flow according to the second rectification operation mode may be confirmed.

The first connection switch SW1 continuously maintains a turned-on state.

The first switching element Sa1 and the fourth switching element Sa4 are turned off according to the second rectifying operation mode.

The second switching element Sa2 and the third switching element Sa3 are turned on according to the second rectifying operation mode.

At this time, the second signal flow according to the second rectification operation mode is a second switching element (Sa2), a resonance tank (L2, C2), a receiving coil (Ls), a first connection switch (SW1), and a third switching element ( Sa3) appears sequentially.

8 and 9 , as the first signal flow and the second signal flow according to the first rectification operation mode and the second rectification operation mode are repeatedly performed, the AC voltage of the receiving coil Ls may be converted into a DC voltage. .

10 is a first diagram illustrating a signal flow according to a step-down operation mode during wireless charging.

Referring to FIG. 10 , it can be seen that the battery wired/wireless charging system 10 operates in the first step-down operation mode after the rectification operation mode during wireless charging.

The fifth connection switch SW5 is turned on according to the first step-down operation mode.

The second connection switch SW2 , the third connection switch SW3 , and the fourth connection switch SW4 are turned off according to the first step-down operation mode.

The fifth switching element Sa5 is turned on according to the first step-down operation mode.

The sixth switching element Sa6 is turned off according to the first step-down operation mode.

The first signal flow according to the first step-down operation mode is the fifth switching element Sa5, the U-phase U2 of the driving motor MOT, the neutral point NP2 of the driving motor MOT, and the fifth connection switch SW5 , and the battery BATT appear to pass sequentially.

11 is a second diagram illustrating a signal flow according to a step-down operation mode during wireless charging.

Referring to FIG. 11 , it can be seen that the battery wired/wireless charging system 10 operates in the second step-down operation mode after the rectification operation mode during wired charging.

The fifth connection switch SW5 is turned on according to the second step-down operation mode.

The second connection switch SW2 , the third connection switch SW3 , and the fourth connection switch SW4 are turned off according to the second step-down operation mode.

The fifth switching element Sa5 is turned off according to the second step-down operation mode.

The sixth switching element Sa6 is turned on according to the second step-down operation mode.

The second signal flow according to the second step-down operation mode is the sixth switching element (Sa6), the U-phase (U2) of the driving motor (MOT), the neutral point (NP2) of the driving motor (MOT), and the fifth connection switch (SW5) , and the battery BATT appear to pass sequentially.

10 and 11 , as the first step-down operation mode and the second step-down operation mode are repeatedly performed, the DC voltage converted in the rectification operation mode may be appropriately step-down to a battery charging voltage suitable for charging the battery BATT.

Through this, the battery BATT may be wirelessly charged through the second inverter unit 200 that drives the driving motor MOT rather than a separate wireless charging system.

On the other hand, the battery wired/wireless charging system 10 using the vehicle motor control system according to the preferred embodiment of the present invention simultaneously uses the first inverter unit 100 and the second inverter unit 200 to simultaneously charge the battery through wired and wireless charging. (BATT) can also be quickly charged. Signal flow according to wired and wireless simultaneous charging may be implemented through a combination of various operation modes of FIGS. 2 to 11 , and a detailed description thereof will be omitted.

12 is a flowchart of a method of operating a battery wired/wireless charging system using a vehicle motor control system according to a preferred embodiment of the present invention.

Referring to FIGS. 1 and 12 , in the method of operating the battery wired/wireless charging system using the vehicle motor control system, the first inverter unit 100 operates in the wired charging mode while the vehicle is parked (S1210).

The first inverter unit 100 converts the external power connected by wire into a DC voltage according to the PFC operation mode (S1220).

The first inverter unit 100 transforms the DC voltage into a battery charging voltage according to the power conversion operation mode (S1230).

The second inverter unit 200 operates in the wireless charging mode while the vehicle is parked (S1240).

The second inverter unit 200 converts the external power wirelessly connected to a DC voltage according to the rectifying operation mode (S1250).

The second inverter unit 200 transforms the DC voltage into a battery charging voltage according to the step-down operation mode ( S1260 ).

The first inverter unit 100 and the second inverter unit 200 operate in a wired/wireless charging mode while the vehicle is parked (S1270).

The first inverter unit 100 converts the external power connected by wire into a DC voltage according to the PFC operation mode, and the second inverter unit 200 converts the external power connected wirelessly into a DC voltage according to the rectification operation mode ( S1280).

The first inverter unit 100 transforms the DC voltage into a battery charging voltage according to the power conversion operation mode, and the second inverter unit 200 transforms the DC voltage into the battery charging voltage according to the step-down operation mode (S1290).

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions are possible within the range that does not depart from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are intended to explain, not to limit the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. .

Steps and/or operations according to the present invention may occur concurrently in different embodiments, either in a different order, or in parallel, or for different epochs, etc., as would be understood by one of ordinary skill in the art. can

Depending on the embodiment, some or all of the steps and/or operations run instructions, programs, interactive data structures, clients and/or servers stored in one or more non-transitory computer-readable media. At least some may be implemented or performed using one or more processors. The one or more non-transitory computer-readable media may be illustratively software, firmware, hardware, and/or any combination thereof. Further, the functionality of a “module” discussed herein may be implemented in software, firmware, hardware, and/or any combination thereof.

10: Battery wired and wireless charging system
100: first inverter unit
110: PFC system
Sb3, Sb4, Sb5, Sb6: 3rd, 4th, 5th, 6th drive switch
SW7, SW8, SW9, SW10: 7th, 8th, 9th, 10th connection switch
111: AC power supply unit
120: first DC-DC converter
Sb1, Sb2: first and second driving switches
SW6: 6th connection switch
C1: first capacitor
200: second inverter unit
210: diode rectification system
Sa1, Sa2, Sa3, Sa4: first, second, third, fourth switching element
SW1, SW2, SW3, SW4: 1st, 2nd, 3rd, 4th connection switch
211: wireless receiver
220: second DC-DC converter
Sa5, Sa6: fifth and sixth switching elements
SW2: second connection switch
C3: third capacitor

Claims (16)

a first inverter unit configured to drive a first motor of the vehicle, the first inverter unit converting the voltage of the first power connected by wire into a battery charging voltage suitable for charging the vehicle battery according to the wired charging mode; and
a second inverter unit configured to drive a second motor of the vehicle and converting a voltage of a second power source connected wirelessly according to a wireless charging mode into a battery charging voltage suitable for charging a vehicle battery;
A battery wired and wireless charging system using a vehicle motor control system comprising a. The method of claim 1,
The first inverter unit and the second inverter unit,
A wired/wireless battery charging system using a vehicle motor control system, characterized in that the vehicle battery is rapidly charged by simultaneously operating according to a wired/wireless charging mode. The method of claim 1,
The first inverter unit,
a PFC system for converting the AC voltage of the first power source into a DC voltage;
and a first DC-DC converter for converting the DC voltage converted by the PFC system into the battery charging voltage. 4. The method of claim 3,
The PFC system is
A plurality of driving switches constituting an H-bridge circuit that converts the AC voltage of the first power source into a DC voltage through a switching operation;
A plurality of connection switches for connecting the first power source and the plurality of driving switches through a turn-on or turn-off operation, or for connecting and disconnecting each phase of the first motor and the plurality of driving switches
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 5. The method of claim 4,
The plurality of drive switches,
a third driving switch connected between the positive voltage terminal of the battery and the first power source and between the positive voltage terminal of the battery and the V phase of the first motor;
a fourth driving switch connected between the negative voltage terminal of the battery and the first power source, and between the negative voltage terminal of the battery and the V phase of the first motor;
a fifth driving switch connected between the positive voltage terminal of the battery and the first power source, and between the positive voltage terminal of the battery and the W phase of the first motor; and
A sixth driving switch connected between the negative voltage terminal of the battery and the first power source, and between the negative voltage terminal of the battery and the W phase of the first motor
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 6. The method of claim 5,
The plurality of connection switches,
a seventh connection switch connected between the first power supply and the third driving switch and between the first power supply and the fourth driving switch;
an eighth connection switch connected between the V phase of the first motor and the third driving switch and between the V phase of the first motor and the fourth driving switch;
a ninth connection switch connected between the W-phase of the first motor and the fifth driving switch, and between the W-phase of the first motor and the fifth driving switch, and
A tenth connection switch connected between the neutral point of the first motor and the positive voltage terminal of the battery
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 4. The method of claim 3,
The first DC-DC converter,
A pair of driving switches constituting a pole circuit that transforms the DC voltage converted by the PFC system into the battery charging voltage, and
A sixth connection switch connected between the positive voltage terminal of the battery and one end of the pole circuit and turned off according to a wired charging mode
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 8. The method of claim 7,
The pair of drive switches,
a first driving switch connected between the positive voltage terminal of the battery and the U-phase of the first motor, and
a second driving switch connected between the negative voltage terminal of the battery and the U-phase of the first motor
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. The method of claim 1,
The second inverter unit,
a diode rectification system for converting the AC voltage of the second power source into a DC voltage;
A second DC-DC converter for converting the DC voltage converted by the diode rectification system into the battery charging voltage
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 10. The method of claim 9,
The diode rectification system is
A plurality of switching elements constituting an H-bridge circuit that converts the AC voltage of the second power source into a DC voltage through a switching operation;
A plurality of connection switches for connecting the second power source and the plurality of switching elements through a turn-on or turn-off operation, or for connecting and disconnecting each phase of the second motor and the plurality of switching elements
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 11. The method of claim 10,
The plurality of switching elements,
A first switching element connected between the positive voltage terminal of the battery and the second power source, and between the positive voltage terminal of the battery and the W phase of the second motor;
a second switching element connected between the negative voltage terminal of the battery and the second power source, and between the negative voltage terminal of the battery and the W phase of the second motor;
a third switching element connected between the positive voltage terminal of the battery and the second power source, and between the positive voltage terminal of the battery and the V phase of the second motor; and
A fourth switching element connected between the negative voltage terminal of the battery and the second power source, and between the negative voltage terminal of the battery and the V phase of the second motor
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 12. The method of claim 11,
The plurality of connection switches,
a first connection switch connected between the second power source and the third switching element and between the second power source and the fourth switching element;
a third connection switch connected between the V-phase of the second motor and the third switching element, and between the V-phase of the second motor and the fourth switching element;
a fourth connection switch connected between the W phase of the second motor and the first switching element, and between the W phase of the second motor and the first switching element, and
a fifth connection switch connected between the neutral point of the second motor and the positive voltage terminal of the battery
A battery wired and wireless charging system using a motor control system for a vehicle, characterized in that it comprises a. 10. The method of claim 9,
The second DC-DC converter,
a pair of switching elements constituting a pole circuit that transforms the DC voltage converted by the diode rectification system into the battery charging voltage; and
and a second connection switch connected between the positive voltage terminal of the battery and one end of the pole circuit, the second connection switch being turned off according to a wireless charging mode. 14. The method of claim 13,
The pair of switching elements,
a fifth switching element connected between the positive voltage terminal of the battery and the U-phase of the second motor; and
and a sixth switching element connected between the negative voltage terminal of the battery and the U-phase of the second motor. a wired charging step of converting a voltage of a first power connected by wire into a battery charging voltage using a first inverter unit for driving a first motor of the vehicle when operating in a wired charging mode; and
a wireless charging step of converting a voltage of a second power wirelessly connected to a battery charging voltage using a second inverter unit for driving a second motor of the vehicle when operating in a wireless charging mode;
Operating method of a battery wired and wireless charging system using a vehicle motor control system comprising a. 16. The method of claim 15,
Wired/wireless charging that converts the voltage of the first power to a battery charging voltage and converts the voltage of the second power to a battery charging voltage using the first inverter unit and the second inverter unit simultaneously when operating in a wired/wireless charging mode A method of operating a battery wired/wireless charging system using a vehicle motor control system, comprising the steps of:

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