TWI810663B - Multi-output power distribution control device - Google Patents

Abstract

A multi-output power distribution control device, inductively generating a first direct current through a first secondary side unit of a power converter coupled to the primary side unit, and inductively generating a first direct current through a second secondary side unit coupled to the primary side unit a second direct current. And the first direct current is received by a first switch unit, and the second direct current is received by a second switch unit. Finally, a control unit receives a charging control signal sent by a power receiving device through an output port, and controls one of the first switching unit or the second switching unit to conduct according to the charging control signal, and controls the other to be non-conducting , so that the output port outputs the first direct current or the second direct current. Since the present invention only has one set of power converters, multiple sets of power converters are not required, and the space required by a whole set of power converters can be saved, so the space application efficiency can be improved and the application of wide voltage adjustment can be complied with.

Description

Multi-output power distribution control device

The invention relates to a power distribution control device, especially a multi-output power distribution control device.

With the widespread popularity of electronic products, the charging methods of electronic products are becoming more and more diverse. Different electronic products have different charging powers. Therefore, for electronic products with different charging powers, it is necessary to prepare chargers with various output powers. It is inconvenient for users. For example, in the charging specification released by the USB IF, there is an output voltage specification of 5 volts (V)-48V, and a maximum output power specification of 240 watts (W).

Therefore, in order to be able to provide a wide range of voltage adjustment and meet the demand for high power of 240W, the existing charger must require multiple sets of switching architectures for integrated output. In this way, the space utilization rate will decrease, and for portable chargers, the size of the device will become larger and cannot be used as a portable charger. For example, please refer to FIG. 6 , in order to realize the function of high power and multi-voltage output, the existing charger adopts multiple sets of isolated DC/DC converter modules 300 and 400 connected in parallel. Usually one group is responsible for low voltage requirements, and the other group is responsible for high voltage requirements.

When the charger receives AC power through the input port 100, the AC power is converted into DC power by the rectifier unit 200, and then input to the primary side units of the DC/DC converter modules 300, 400, and then the DC/DC The secondary side units of the DC converter modules 300 and 400 output the converted DC power to the high power output port 500 and the normal power output port 600 respectively. The high power output port The 500 is used to output the charging power required by the high voltage to charge the electronic products that need to be charged, and the general power output port 600 is used to output the charging power required by the low voltage to charge the electronic products that need to be charged.

However, this architecture requires multiple sets of isolated DC/DC converter modules, which limits the space utilization efficiency of the charger, making the charger bulky and inconvenient to carry. Therefore, the existing charger still needs further improvement.

In view of the above problems, the present invention provides a multi-output power distribution control device, which can output a variety of different output powers through a single output port, and does not need to install multiple sets of DC/DC converter modules, which can effectively improve space utilization efficiency. question.

The multi-output power distribution control device includes: an input port, the power supply is connected to a power supply to receive an alternating current; a rectifier unit is electrically connected to the input port, receives the alternating current, and converts the alternating current into a direct current; a power supply The converter includes: a primary side unit electrically connected to the rectifier unit to receive the direct current; a first secondary side unit coupled to the primary side unit to generate a first direct current by induction; a second secondary side unit A side unit, coupled to the primary side unit, to induce a second direct current; a first switch unit, electrically connected to the first secondary side unit, to receive the first direct current; a second switch unit, electrically connected to the second The secondary side unit receives the second direct current; an output port is electrically connected to the first switch unit and the second switch unit, and the power supply is connected to a power receiving device; a control unit is electrically connected to the output port, the first a switch unit, the second switch unit, the first secondary side unit, the second secondary side unit, and the primary side unit; Wherein the control unit receives a charge control signal transmitted by the power receiving device through the output port; wherein when the charge control signal is a high-voltage charge signal, the control unit controls the first switch unit to conduct and controls the second switch unit not conducting, so that the output port outputs the first direct current, and the control unit controls the primary side unit according to the first direct current and the high-voltage charging signal; wherein when the charging control signal is a low-voltage charging signal, the control unit controls The second switch unit is turned on, and the first switch unit is controlled not to be turned on, so that the output port outputs the second direct current, and the control unit controls the primary side unit according to the second direct current and the low-voltage charging signal.

Since the present invention has only one set of power converters, and uses two switch units to switch the DC power to be output. Connect multiple sets of output direct current to the output port respectively through two switch units, and the control unit receives the charging control signal sent by the power receiving device connected to the output port to judge the current power to be output, thereby adjusting the The first switch unit and the second switch unit are turned on and off to output direct current corresponding to the output power to the output port to charge the power receiving device. Therefore, the multi-output power distribution control device provided by the present invention does not need multiple sets of power converters, and can save the space required by a whole set of power converters, so it can improve the efficiency of space application and can meet the requirements of wide voltage adjustment range. The application can greatly improve the utilization rate of space, so as to achieve the scope of optimal design.

10: input port

20: rectifier unit

30: Power converter

31: Primary side unit

311: primary side coil

312: primary side switch

32: The first secondary side unit

321: The first secondary side module

3211: first coil

322: The first synchronous rectification control module

3221: The first synchronous rectification controller

33: The second secondary side unit

331: The second two two side module

3311: second coil

332: The second synchronous rectification control module

3321: The second synchronous rectification controller

40: The first switch unit

41: First switch

42: The first DC/DC converter

43: The third switch module

50: Second switch unit

51: second switch

52: Second DC/DC converter

53: The fourth switch

60: output port

70: Control unit

71: Circuit control module

711: Charge controller

712: control circuit

72: Power conversion control module

80: Anti-electromagnetic interference module

91: Power Factor Correction Circuit

92: Power Factor Correction Controller

100: input port

200: rectifier unit

300: DC/DC converter module

400: DC/DC converter module

500: High power output port

600: General power output port

FIG. 1 is a schematic diagram of the system architecture of the multi-output power distribution control device of the present invention.

FIG. 2 is a schematic diagram of another system architecture of the multi-output power distribution control device of the present invention.

FIG. 3 is a schematic diagram of the circuit structure of the multi-output power distribution control device of the present invention.

FIG. 4 is a schematic diagram of another system architecture of the multi-output power distribution control device of the present invention.

FIG. 5 is a schematic diagram of the system architecture of another embodiment of the multi-output power allocation control device of the present invention.

FIG. 6 is a schematic diagram of a system architecture of an existing charger.

Please refer to Fig. 1, the multi-output power distribution control device of the present invention comprises an input port 10, a rectifier unit 20, a power converter 30, a first switch unit 40, a second switch unit 50, an output port 60 and a control unit 70.

The input port 10 is connected to a power supply for receiving an AC power. The rectifying unit 20 is electrically connected to the input port 10 to receive the AC power and convert the AC power into a DC power.

The power converter 30 includes a primary side unit 31 , a first secondary side unit 32 and a second secondary side unit 33 . The primary side unit 31 is electrically connected to the rectifying unit 20 to receive the DC power. The first secondary side unit 32 is coupled to the primary side unit 31 to inductively generate a first direct current. The second secondary side unit 33 is coupled to the primary side unit 31 for inductively generating a second direct current.

The first switch unit 40 is electrically connected to the first secondary side unit 32 to receive the first direct current. The second switch unit 50 is electrically connected to the second secondary side unit 33 to receive the second direct current.

The output port 60 is electrically connected to the first switch unit 40 and the second switch unit 50 , and the power supply is connected to a power receiving device. The control unit 70 is electrically connected to the output port 60 , the first switch unit 40 , the second switch unit 50 , the first secondary side unit 32 , the second secondary side unit 33 and the primary side unit 31 .

The control unit 70 receives a charging control signal transmitted by the power receiving device through the output port 60 . And when the charging control signal is a high-voltage charging signal, the control unit 70 controls the first switch unit 40 to be turned on, and controls the second switch unit 50 to be turned off, so that the output port 60 outputs the first direct current, and the The control unit 70 controls the primary side unit 31 according to the first direct current and the high voltage charging signal. And when the charging control signal is a low-voltage charging signal, the control unit 70 controls the second switch unit 50 to be turned on, and controls the first switch unit 40 to be turned off, so that the output port 60 outputs the second direct current. current, and the control unit 70 controls the primary side unit 31 according to the second direct current and the low-voltage charging signal.

Since the present invention only has one set of power converters 30 , and uses two switch units to switch the output DC power, that is, the first switch unit 40 and the second switch unit 50 . By outputting the first direct current or the second direct current to the output port 60 respectively through the first switch unit 40 and the second switch unit 50 , and the control unit 70 transmits according to the power receiving device connected to the output port 60 The charging control signal judges the power to be output at present, thereby adjusting the opening and closing of the first switch unit 40 and the second switch unit 50, and controlling the corresponding output power of DC output to the output port 60, thereby providing the power receiving device Charge. Therefore, the multi-output power distribution control device provided by the present invention does not need multiple sets of power converters, and can save the space required by a whole set of power converters, so it can improve the efficiency of space application and can meet the requirements of wide voltage adjustment range. The application can greatly improve the utilization rate of space, so as to achieve the scope of optimal design.

For example, when the control unit 70 judges that the power receiving device needs a high-power power source for charging according to the charging control signal, the control unit 70 controls the first switch unit 40 to turn on and output the first high-voltage direct current, for example 48 volts (V) of direct current, and a current of 5 amps (A) to charge the receiving device with a high power of 240 watts (W). And when the control unit 70 judges that the receiving device needs a low-power power supply for charging according to the charging control signal, the control unit 70 controls the second switch unit 50 to turn on, and outputs the second direct current of low voltage, such as a 5V direct current. , and charge the receiving device with a current of 3A and a low power of 15W.

2 and 3, the multi-output power distribution control device further includes an anti-electromagnetic interference unit 80, the anti-electromagnetic interference unit 90 is electrically connected between the input port 10 and the rectifier unit 20, and The AC power is output to the rectifying unit 20 after passing through the anti-electromagnetic interference unit 80 . With the arrangement of the anti-electromagnetic interference unit 80, the electromagnetic interference noise in the alternating current can be reduced. in this In the embodiment, the rectification unit 20 is a bridge rectifier, and the anti-electromagnetic interference unit 80 is a common mode inductor.

Further, the first switch unit 40 is a first metal oxide semiconductor field effect transistor (MOSFET), and a source and a drain of the first MOSFET are electrically connected to the first secondary side unit 32 and the output port 60 , and a gate of the first MOSFET is electrically connected to the control unit 70 .

And the second switching unit 50 is a second MOSFET, and a source and a drain of the second MOSFET are electrically connected between the second secondary side unit 33 and the output port 60, and the second MOSFET One of the gates is electrically connected to the control unit 70 .

In this way, the control unit 70 can control whether the first switch unit 40 and the second switch unit 50 are turned on or not by controlling the gate voltages of the first MOSFET and the second MOSFET.

The first secondary side unit 32 includes a secondary side module 321 and a first synchronous rectifier control (Synchronous Rectifier control) module 322 . The second secondary side unit 33 includes a second secondary side module 331 and a second synchronous rectification control module 332 .

The first secondary-side module 321 includes a first coil 3211 , and the first coil 3211 is coupled to the primary-side unit 31 for inductively generating the first direct current. The first synchronous rectification control module 322 is electrically connected to the first secondary side module 321 and the first switch unit 40 to receive the first direct current and output the synchronously rectified first direct current to the first switch Unit 40.

The second secondary-side module 331 includes a second coil 3311 , and the second coil 3311 is coupled to the primary-side unit 31 for inductively generating the second direct current. The second synchronous rectification control module 332 is electrically connected to the second secondary side module 331 and the second switch unit 50 to receive the second DC power and output the synchronously rectified second DC power to the second switch Unit 50. In this embodiment, the first synchronous rectification control module 322 includes a first synchronous rectification controller 3221, and the second synchronous rectification controller 3221 The step rectification control module 332 includes a second synchronous rectification controller 3321 . The models of the first synchronous rectification controller 3221 and the second synchronous rectification controller 3321 are both MP3608GJ-Z.

In addition, the primary side unit 31 includes a primary side coil 311 and a primary side switch 312 .

The primary coil 311 is coupled to the first coil 3211 of the first secondary module 321 of the first secondary unit 32 and the second secondary module 331 of the second secondary unit 33 The second coil 3311.

After the primary side switch 312 is connected in series with the primary side coil 311, it is connected between a positive output terminal and a negative output terminal of the rectifier unit 20, and a control terminal of the primary side switch 312 is connected to the control unit 70 .

Further, the control unit 70 includes a circuit control module 71 and a power conversion control module 72 .

The circuit control module 71 is electrically connected to the output port 60, the gate of the first MOSFET of the first switch unit 40, the gate of the second MOSFET of the second switch unit 50, the first secondary side unit 32 and the second secondary side unit 33 . The circuit control module 71 receives the charging control signal transmitted by the power receiving device through the output port 60 . And when the charging control signal is the high voltage charging signal, the circuit control module 71 controls the first switch unit 40 to be turned on, and controls the second switch unit 50 to be turned off, so that the output port 60 outputs the first direct current. When the charging control signal is the low-voltage charging signal, the circuit control module 71 controls the second switch unit 50 to be turned on, and controls the first switch unit 40 to be turned off, so that the output port 60 outputs the second direct current.

The power conversion control module 72 is coupled to the circuit control module 71 and electrically connected to a control terminal of the primary side switch 312 of the primary side unit 31, and the power conversion control module 72 generates according to the circuit control module 71 The primary side unit 31 is controlled by a feedback control signal. When the first switch unit 40 is turned on, the circuit control module 71 generates the loop according to the first direct current and the high-voltage charging signal. grant control signal. And when the second switch unit 50 is turned on, the circuit control module 71 generates the feedback control signal according to the second direct current and the low-voltage charging signal. In this embodiment, the model of the circuit control module 71 is WT6633F, and the model of the power conversion control module 72 is NCP12601.

Please refer to FIG. 4 , the circuit control module 71 includes a charge controller 711 and a control circuit 712 .

The charge controller 711 is electrically connected to the output port 60 , the first switch unit 40 and the second switch unit 50 . The charging controller 711 receives the charging control signal transmitted by the power receiving device through the output port 60 . When the charging control signal is the high voltage charging signal, the charging controller 711 controls the first switch unit 40 to be turned on, and controls the second switch unit 50 to be turned off, so that the output port 60 outputs the first direct current. When the charging control signal is the low-voltage charging signal, the charging controller 711 controls the second switch unit 50 to be turned on, and controls the first switch unit 40 to be turned off, so that the output port 60 outputs the second direct current.

The control circuit 712 is electrically connected to the first secondary side unit 32 , the second secondary side unit 33 and the charging controller 711 , and coupled to the power conversion control module 72 . When the first switch unit 40 is turned on, the control circuit 712 generates the feedback control signal according to the first direct current and the high voltage charging signal. When the second switch unit 50 is turned on, the control circuit 712 generates the feedback control signal according to the second direct current and the low-voltage charging signal.

In this embodiment, the charging controller 711 is a USB power supply controller (USB PD controller), and the control circuit 712 is optically coupled to the power conversion control module 72 . The control circuit 712 and the power conversion control module 72 control the primary side unit 31 in a conventional DC/DC converter feedback control mode, which will not be repeated here.

The multi-output power distribution control device further includes a power factor correction circuit 91 and a power factor correction controller 92 .

The power factor correction circuit 91 is electrically connected between the rectification unit 20 and the primary side unit 31 , receives the DC power, and outputs the corrected DC power to the primary side unit 31 . The power factor correction controller 92 is electrically connected to the power factor correction circuit 91 , receives the corrected direct current, and controls the power factor correction circuit 91 according to the corrected direct current feedback.

Please refer to FIG. 5, in another embodiment of the present invention, the first switch unit 40 includes a first switch 41, a first direct current/direct current (DC/DC) converter 42 and a three-switch Module 43.

The first switch 41 is electrically connected between the first secondary side unit 32 and the output port 60 to receive the first direct current, and is electrically connected to the control unit 70 . The first DC/DC converter 42 is electrically connected to the first secondary side unit 32 to receive the first DC power and convert it into a third DC power. The third switch 43 is electrically connected between the first DC/DC converter and the output port 60 to receive the third direct current, and is electrically connected to the control unit 70 .

The second switch unit 50 includes a second switch 51 , a second DC/DC converter 52 and a four-switch 53 .

The second switch 51 is electrically connected between the second secondary side unit 33 and the output port 60 to receive the second direct current, and is electrically connected to the control unit 70 . The second DC/DC converter is electrically connected to the second secondary side unit 33 to receive the second direct current and convert it into a fourth direct current. The fourth switch 43 is electrically connected between the second DC/DC converter 52 and the output port 60 to receive the fourth direct current, and is electrically connected to the control unit 70 .

When the charging control signal is the high-voltage charging signal, the control unit 70 controls the first switch 41 to be turned on, and controls the second switch 51, the third switch 43 and the fourth switch 43 to be off, so that the output port 60 outputs the first direct current.

When the charging control signal is a high-voltage charging signal, the control unit 70 controls the third switch 43 to be turned on, and controls the first switch 41, the second switch 51 and the fourth switch 53 to be off, so that the output port 60 outputs the third direct current.

When the charging control signal is the low-voltage charging signal, the control unit 70 controls the second switch 51 to be turned on, and controls the first switch 41, the third switch 43 and the fourth switch 53 to be off, so that the output port 60 outputs the second direct current.

When the charging control signal is a low-voltage charging signal, the control unit 70 controls the fourth switch 53 to be turned on, and controls the first switch 41, the second switch 51 and the third switch 43 to be off, so that the output port 60 outputs the fourth direct current.

Further, the first switch 41 is the first MOSFET, and a source and a drain of the first MOSFET are electrically connected between the first secondary side unit 32 and the output port 60, and the first MOSFET A gate of a MOSFET is electrically connected to the control unit 70 .

The third switch 43 is a third MOSFET, and a source and a drain of the third MOSFET are electrically connected between the first DC/DC converter 42 and the output port 60, and the third MOSFET A gate is electrically connected to the control unit 70 .

The second switch 51 is the second MOSFET, and a source and a drain of the second MOSFET are electrically connected between the second secondary side unit 33 and the output port 60, and one of the second MOSFET The gate is electrically connected to the control unit 70 .

The fourth switch 53 is a fourth MOSFET, and a source and a drain of the fourth MOSFET are electrically connected between the second DC/DC converter 52 and the output port 60, and the fourth MOSFET A gate is electrically connected to the control unit 70 .

In this implementation, since the output port 60 can receive the first to the fourth direct currents with more different voltages, and the control unit 70 controls the first to the fourth direct currents respectively according to the received charging control signal. Four switches 41, 43, 51, 53, thereby allowing the output port 60 to output more types of power voltage to charge the receiving device. For example, the first direct current is a power supply with a voltage of 48V, a current of 5A, and an output power of 240W. The second direct current is a power supply with a voltage of 20V, a current of 5A, and an output power of 100W. The third direct current is a power supply with a voltage of 36V, a current of 5A, and an output power of 180W. The fourth direct current is a power supply with a voltage of 5V, a current of 3A, and an output power of 15W.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this professional technology Personnel, without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solution of the present invention.

10: input port 20: rectifier unit 30: Power converter 31: Primary side unit 32: The first secondary side unit 33: The second secondary side unit 40: The first switch unit 50: Second switch unit 60: output port 70: Control unit

Claims (10)

A multi-output power distribution control device, comprising: an input port, the power supply is connected to a power supply to receive an alternating current; a rectifier unit is electrically connected to the input port, receives the alternating current, and converts the alternating current into a direct current; The power converter includes: a primary side unit electrically connected to the rectification unit to receive the direct current; a first secondary side unit coupled to the primary side unit to generate a first direct current by induction; a second two The secondary side unit is coupled to the primary side unit to induce a second direct current; a first switch unit is electrically connected to the first secondary side unit and receives the first direct current; a second switch unit is electrically connected to the first Secondary side unit, receiving the second direct current; an output port, electrically connected to the first switch unit and the second switch unit, and the power supply is connected to a power receiving device; a control unit, electrically connected to the output port, the second switch unit A switch unit, the second switch unit, the first secondary side unit, the second secondary side unit, and the primary side unit; wherein the control unit receives a charging control signal transmitted by the power receiving device through the output port; Wherein when the charging control signal is a high-voltage charging signal, the control unit controls the first switch unit to conduct, and controls the second switch unit to not conduct, so that the output port outputs the first direct current, and the control unit according to the The first direct current and the high-voltage charging signal control the primary side unit; wherein when the charging control signal is a low-voltage charging signal, the control unit controls the second switch unit to be turned on, and controls the first switch unit to be off, so that the The output port outputs the second direct current, and the control unit controls the primary side unit according to the second direct current and the low-voltage charging signal. The multi-output power distribution control device as described in claim 1 further includes: an anti-electromagnetic interference unit electrically connected between the input port and the rectifier unit, and the alternating current passes through the anti-electromagnetic interference unit and is output to the rectifier unit. The multi-output power distribution control device as described in Claim 1, wherein the first switch unit is a first metal oxide semiconductor field effect transistor (MOSFET), and a source and a drain of the first MOSFET Electrically connected between the first secondary side unit and the output port, and a gate of the first MOSFET is electrically connected to the control unit; wherein the second switching unit is a second MOSFET, and the second MOSFET A source and a drain are electrically connected between the second secondary side unit and the output port, and a gate of the second MOSFET is electrically connected to the control unit. The multi-output power distribution control device as described in claim 1, wherein the first secondary side unit includes: a first secondary side module, including a first coil, and the first coil and the primary side unit coupling to generate the first direct current by induction; a first synchronous rectification control module electrically connected to the first secondary side module and the first switch unit to receive the first direct current and output the synchronously rectified The first direct current is supplied to the first switch unit; wherein the second secondary side unit includes: a second secondary side module including a second coil, and the second coil is coupled to the primary side unit, so as to generating the second direct current by induction; A second synchronous rectification control module electrically connected to the second secondary side module and the second switch unit to receive the second DC power and output the synchronously rectified second DC power to the second switch unit. The multi-output power distribution control device as described in claim 1, wherein the primary side unit includes: a primary side coil, coupled to the first secondary side unit and the second secondary side unit; a primary side The switch is connected in series with the primary side coil and connected between a positive output terminal and a negative output terminal of the rectification unit, and a control terminal of the primary side switch is connected to the control unit. The multi-output power distribution control device as described in claim 1, wherein the control unit includes: a circuit control module electrically connected to the output port, the first switch unit, the second switch unit, the first two The secondary side unit and the second secondary side unit; wherein the circuit control module receives the charging control signal sent by the power receiving device through the output port; wherein when the charging control signal is the high voltage charging signal, the circuit control module control the first switch unit to conduct, and control the second switch unit not to conduct, so that the output port outputs the first direct current; wherein when the charging control signal is the low-voltage charging signal, the circuit control module controls the second The second switch unit is turned on, and the first switch unit is controlled not to be turned on, so that the output port outputs the second direct current; a power conversion control module is coupled to the circuit control module, and is electrically connected to the primary side unit, and the power supply The conversion control module controls the primary side unit according to a feedback control signal generated by the circuit control module; wherein when the first switch unit is turned on, the circuit control module generates the A feedback control signal; when the second switch unit is turned on, the circuit control module generates the feedback control signal according to the second direct current and the low-voltage charging signal. The multi-output power distribution control device as described in claim 6, wherein the circuit control module includes: a charging controller electrically connected to the output port, the first switching unit and the second switching unit; wherein the charging The controller receives the charging control signal transmitted by the power receiving device through the output port; wherein when the charging control signal is the high-voltage charging signal, the charging controller controls the first switch unit to be turned on, and controls the second switch unit not to conduction, so that the output port outputs the first direct current; wherein when the charging control signal is the low-voltage charging signal, the charging controller controls the second switch unit to be conductive, and controls the first switch unit to be non-conductive, so that the output The port outputs the second direct current; a control circuit electrically connects the first secondary side unit, the second secondary side unit and the charge controller, and couples the power conversion control module; wherein when the first switch unit When turned on, the control circuit generates the feedback control signal according to the first direct current and the high-voltage charging signal; wherein when the second switch unit is turned on, the control circuit generates the feedback according to the second direct current and the low-voltage charging signal control signal. The multi-output power distribution control device as described in Claim 1 further includes: a power factor correction circuit, electrically connected between the rectification unit and the primary side unit, and receiving the direct current, and outputting the corrected direct current to the primary side unit; a power factor correction controller electrically connected to the power factor correction circuit, receiving the corrected direct current, and controlling the power factor correction circuit according to the corrected direct current feedback. The multi-output power distribution control device as described in claim 1, wherein the first switch unit includes: a first switch electrically connected between the first secondary side unit and the output port to receive the second a direct current electrically connected to the control unit; A first DC/DC converter electrically connected to the first secondary side unit to receive the first DC power and convert it into a third DC power; a third switch electrically connected to the first DC/DC converter Between the device and the output port, to receive the third direct current, and electrically connected to the control unit; wherein the second switch unit includes: a second switch, electrically connected between the second secondary side unit and the output between ports to receive the second direct current and electrically connect to the control unit; a second DC/DC converter electrically connected to the second secondary side unit to receive the second direct current and convert it into a fourth Direct current; a fourth switch, electrically connected between the second DC/DC converter and the output port, to receive the fourth direct current, and electrically connected to the control unit; wherein when the charging control signal is the high voltage charging signal, the control unit controls the first switch to be turned on, and controls the second switch, the third switch, and the fourth switch to be off, so that the output port outputs the first direct current; wherein when the charging control signal is once When the high-voltage charging signal is used, the control unit controls the third switch to be turned on, and controls the first switch, the second switch, and the fourth switch to be turned off, so that the output port outputs the third direct current; wherein when the charging control signal When the low-voltage charging signal is received, the control unit controls the second switch to be turned on, and controls the first switch, the third switch, and the fourth switch to be off, so that the output port outputs the second direct current; wherein when the charging When the control signal is a low-voltage charging signal, the control unit controls the fourth switch to be turned on, and controls the first switch, the second switch and the third switch to be off, so that the output port outputs the fourth direct current. The multi-output power distribution control device as described in claim 9, wherein the first switch is a first MOSFET, and a source and a drain of the first MOSFET are electrically connected to the first secondary side unit and between the output ports, and a gate of the first MOSFET is electrically connected to the control unit; wherein the third switch is a third MOSFET, and a source and a drain of the third MOSFET are electrically connected to the control unit Between the first DC/DC converter and the output port, and the gate of the third MOSFET is electrically connected to the control unit; wherein the second switch is a second MOSFET, and a source of the second MOSFET A pole and a drain are electrically connected between the second secondary side unit and the output port, and a gate of the second MOSFET is electrically connected to the control unit; wherein the fourth switch is a fourth MOSFET, and A source and a drain of the fourth MOSFET are electrically connected between the second DC/DC converter and the output port, and a gate of the fourth MOSFET is electrically connected to the control unit.

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