TWI533584B - N-times voltage multiplier rectifier and control method thereof - Google Patents

Description

Multi-voltage rectifier circuit and control method thereof

The present invention relates to a rectifier circuit, and more particularly to a multiple voltage rectifier circuit.

Referring to FIG. 15 , a conventional voltage doubler rectifier circuit 200 has a transformer 210 , a first capacitor 220 , a second capacitor 230 , a third capacitor 240 , a fourth capacitor 250 , and a first diode . The body 260, the second diode 270, the third diode 280, and the fourth diode 290, the transformer 210 has a first output end 211 and a second output end 212. The first capacitor 220 The two ends of the second capacitor 230 are connected to the first output end 211 and the second node n2, and the two ends of the first diode 260 are connected at both ends. The first node n1 and the third node n3, the two ends of the second diode 270 are connected to the first node n1 and the fourth node n4, and the two ends of the third capacitor 240 are connected to the third node n3 and The fourth node n4, the two ends of the fourth diode 290 are connected to the fourth node n4 and the second node n2, and the two ends of the third diode 280 are connected to the second node n2 and a fifth node. N5, the fourth capacitor 250 has two ends connected to the fourth node n4 and the fifth node n5.

The circuit operation of the voltage doubler rectifier circuit 200 is such that when the transformer 210 operates in the positive half cycle, the current output by the first output terminal 211 of the transformer 210 passes through the two loops to the third capacitor 240 and the second capacitor, respectively. 230 stores energy, and when the transformer 210 operates in the negative half cycle, the current output by the second output terminal 212 of the transformer 210 stores the fourth capacitor 250 and the first capacitor 220 via two loops, respectively. The third capacitor 240 and the fourth capacitor 250 respectively store twice the voltage of the terminal voltage of the transformer 210, and generate four times the voltage between the third capacitor 240 and the fourth capacitor 250. The effect of quadruple voltage is achieved, but since the third capacitor 240 and the fourth capacitor 250 must withstand twice the voltage stress, if the voltage doubler rectifier circuit 200 is applied to a high-power circuit architecture, the architecture cost of the circuit It will be very impressive, and the voltage stress caused by the capacitor is large, which causes instability of the voltage doubler rectifier circuit 200. In addition, since the voltage doubler rectifier circuit 200 is hard-switched, the transformer 210 is operated in the positive half. Or negative half cycle, the resulting ripple current is very large, the power loss caused by the voltage doubler rectifier circuit 200 is increased.

The main purpose of the present invention is to store energy by a plurality of energy storage elements by means of switching of power switches, so that each energy storage element is pressure-reduced, thereby achieving the effect of double voltage, and reducing the load-bearing components. The stress, in the circuit of quadruple voltage, the voltage stress of each energy storage component of the present invention is one quarter of the target voltage, so that the energy storage component with a smaller capacity can be used, which can effectively reduce the structural cost of the circuit. And improve the stability of the circuit.

A multi-voltage rectifier circuit includes a first-stage circuit, a transformer, and a second-stage circuit, wherein the first-stage circuit is configured to provide an alternating signal, the transformer has a first side and a second side, the first The second stage circuit is electrically connected to the second side of the transformer, and the second stage circuit has a power switch group, a power component group and an energy storage component group. The power switch group has a first power switch, a second power switch, a third power switch and a fourth power switch. The power component group has a first power component, a second power component, and a third power component. a fourth power component, the energy storage component group has a first energy storage component, a second energy storage component, a third energy storage component, and a fourth energy storage component, the second side of the transformer, the first a power switch, the first power component, the first energy storage component, and the second power switch form a first charging circuit, the second side of the transformer, the first power switch, the second energy storage component, The second power component and the second The rate switch constitutes a second charging circuit, and the second side of the transformer, the third power switch, the fourth energy storage component, the fourth power component and the fourth power switch form a third charging circuit, the transformer The second side, the fourth power switch, the third power component, the third energy storage component and the third power switch form a fourth charging circuit, the first energy storage component and the second energy storage component The third energy storage component and the fourth energy storage component are connected in series.

In the present invention, the first energy storage component, the second energy storage component, the third energy storage component, and the fourth energy storage component are respectively charged by means of time division multiplexing, so that the first energy storage component The second energy storage component, the third energy storage component, and the fourth energy storage component can reach a voltage equalization, and the first energy storage component, the second energy storage component, the third energy storage component, and the The serial connection structure of the fourth energy storage component achieves a double voltage effect, which can greatly reduce the voltage stress required by each energy storage component, thereby reducing the structural cost of the circuit and improving the stability of the circuit.

Referring to FIG. 1 , a multi-voltage rectifier circuit 100 includes a first-stage circuit 110 , a transformer 120 , and a second-stage circuit 130 . The first-stage circuit 110 is configured to provide a first-stage circuit 110 . Preferably, an alternating-wave signal is provided. The transformer 120 is coupled to the first-stage circuit 110 and the second-stage circuit 130. The transformer 120 has a first side 121 and The first side 121 is electrically connected to the first stage circuit 110. The second stage circuit 130 is electrically connected to the second side 122 of the transformer 120. The transformer 120 is connected to the first side 121. The alternating square wave signal is received to generate an induced current on the second side 122, and the induced voltage is used to generate a voltage doubled voltage in the second stage circuit 130.

Referring to FIG. 1 , the first stage circuit 110 is a full bridge rectifier circuit. In other embodiments, any circuit capable of providing a periodically alternating square wave signal can be used as the first stage circuit 110 of the present invention. In this embodiment, the first stage circuit 110 has a power source S, a first switch 111, a second switch 112, a third switch 113, and a fourth switch 114. The power source S has a positive pole S1 and a The first side 121 of the transformer 120 has a first input end 121a and a second input end 121b. The two ends of the first switch 111 are respectively connected to the positive pole S1 and the first input end 121a. The two ends of the second switch 112 are respectively connected to the first input end 121a and the second negative end S2. The two ends of the third switch 113 are respectively connected to the positive pole S1 and the second input end 121b. The second input terminal 121b and the negative electrode S2, a controller C controls the first switch 111, the second switch 112, the third switch 113, and the fourth switch 114 to be turned on or off, so that the first stage Circuit 110 produces an alternating square wave signal.

Referring to FIG. 1 again, the second stage circuit 130 has a power switch group 140, a power component group 150 and an energy storage component group 160. The power switch group 140 has a first power switch 141 and a second power. The switch 142, a third power switch 143 and a fourth power switch 144, the power component group 150 has a first power component 151, a second power component 152, a third power component 153 and a fourth power component 154. The energy storage component group 160 has a first energy storage component 161, a second energy storage component 162, a third energy storage component 163, and a fourth energy storage component 164. In this embodiment, the first power component 151, the second power component 152, the third power component 153, and the fourth power component 154 are power diodes, and the first energy storage component 161, the second The energy storage component 162, the third energy storage component 163, and the fourth energy storage component 164 are capacitors.

Referring to FIG. 1 , the second side 122 of the transformer 120 has a first end 122 a and a second end 122 b . The two ends of the first power switch 141 are respectively connected to the first end 122 a and the first node N1 . The two ends of the second power switch 142 are respectively connected to the second end 122b and a second node N2. The two ends of the third power switch 143 are respectively connected to the first end 122a and the third node N3, and the two ends of the fourth power switch 144 are respectively connected to the second end 122b and a fourth node N4, the first power component The first node N1 and the fifth node N5 are respectively connected to the two ends of the 151, so as to prevent a current from flowing from the fifth node N5 to the first node N1, and the two ends of the second power component 152 are respectively connected to a sixth node. N6 and the first node N1, to prevent a current from flowing from the first node N1 to the sixth node N6, and the two ends of the third power component 153 are respectively connected to the fourth node N4 and the sixth node N6 to avoid A current flows from the sixth node N6 to the fourth node N4. The two ends of the fourth power component 154 are respectively connected to a seventh node N7 and the fourth node N4 to prevent a current from flowing to the fourth node N4. The seventh node N7, the two ends of the first energy storage component 161 are respectively connected to the fifth node N5 and the second node N2, and the two ends of the second energy storage component 162 are respectively connected to the second node N2 and the sixth Node N6, the two ends of the third energy storage component 163 are respectively connected to the sixth node N6 and the a three-node N3, the two ends of the fourth energy storage component 164 are respectively connected to the third node N3 and the seventh node N7, wherein the first energy storage component 161, the second energy storage component 162, and the third energy storage Element 163 and fourth energy storage element 164 are connected in series.

Referring to FIG. 1 , in the embodiment, the first power switch 141 and the second power switch 142 are turned on or off at the same time, and the third power switch 143 and the fourth power switch 144 are simultaneously turned on or off, and when When the first power switch 141 and the second power switch 142 are turned on, the third power switch 143 and the fourth power switch 144 are turned off, and when the third power switch 143 and the fourth power switch 144 are turned on, The first power switch 141 and the second power switch 142 are turned off. Therefore, referring to FIG. 3, when the first power switch 141 and the second power switch 142 are turned on and the third power switch 143 and the fourth power switch 144 are turned off, if the induced current of the transformer 120 is The first end 122a of the second side 122 flows out. Since the second power element 152 limits the inductive current from flowing from the first node N1 to the sixth node N6, the second side 122 of the transformer 120 The first power switch 141, the first power component 151, the first energy storage component 161, and the second power switch 142 constitute a first charging circuit L1. Referring to FIG. 5, if the induced current is from the second side The second end 122b of the transformer 120 flows out, because the first power element 151 restricts the inductive current from flowing to the first node N1 by the fifth node N5, so the second side 122 of the transformer 120, the first power The switch 141, the second energy storage component 162, the second power component 152, and the second power switch 142 constitute a second charging circuit L2. Referring to FIG. 7, when the third power switch 143 and the fourth power switch 144 are turned on, and the first power switch 141 and the second power switch 142 are turned off, if the induced current of the transformer 120 is the second The first end 122a of the side 122 flows out, and the third power element 153 restricts the inductive current from flowing from the sixth node N6 to the fourth node N4. Therefore, the second side 122 and the third side of the transformer 120 The power switch 143, the fourth energy storage component 164, the fourth power component 154, and the fourth power switch 144 form a third charging circuit L3. Referring to FIG. 9, if the induced current is from the second side 122 The second end 122b flows out, and the fourth power component 154 limits the inductive current from the fourth node N4 to the seventh node N7. Therefore, the second side 122 of the transformer 120 and the fourth power switch 144 The third power component 153, the third energy storage component 163, and the third power switch 143 constitute a fourth charging circuit L4. As can be seen from the above, by controlling the on and off of the first power switch 141, the second power switch 142, the third power switch 143, and the fourth power switch 144, and the difference in the direction of the induced current, the first When one of the charging circuit L1, the second charging circuit L2, the third charging circuit L3, and the fourth charging circuit L4 is turned on, the other three charging circuits are turned off.

Referring to FIGS. 2 and 11, the control method 10 of the multiplying voltage rectifying circuit of the present invention includes "turning on the first power switch and the second power switch 11", "turning on the first switch and the fourth switch 12", and "cutting off" First switch and fourth switch 13", "turn on second switch and third switch 14", "cut off second switch and third switch 15", "turn on third power switch and fourth power switch 16", "conducting The first switch and the fourth switch 17", "turn off the first switch and the fourth switch 18", "turn on the second switch and the third switch 19", and "cut off the second switch and the third switch 20".

Referring to FIGS. 2 and 11, the first power switch 141 and the second power switch 142 are turned on in the "on the first power switch and the second power switch 11", and the third power switch 143 and the fourth are turned off. The power switch 144, at this time, the first stage circuit 110 does not have any switches turned on, and no current flows through the first side 121 of the transformer side 120. Therefore, the second stage circuit 130 is also not generated. The current is induced, because the inrush current when the first-stage circuit 110 is turned on is quite large, and the generated large current is coupled to the second side 122 by the transformer 120, thereby causing power. The first power switch 141 and the second power switch 142 of the second-stage circuit 130 are turned on earlier than the first switch 111 and the fourth switch 114 of the first-stage circuit 110, so that the first When the primary circuit 110 is turned on, the second-stage circuit 130 can perform an energy storage operation immediately to avoid power loss.

Referring to Figures 2, 3 and 11, after the first power switch 141 and the second power switch 142 are turned on and an interval has elapsed, "turn on the first switch and the fourth switch 12", see Figure 3. The first switch 111 and the fourth switch 114 are turned on, wherein the power source S, the first switch 111, the first side 121 of the transformer 120, and the fourth switch 114 form a current loop, so that the first side An input current is generated by the second input terminal 121b to the first input end 121a via the current circuit, and an induced current generated by the second side 122 is flowed by the first end 122a to the first charging circuit L1. The second end 122b stores energy for the first energy storage element 161. At this time, the voltage of the first energy storage element 161 is equal to the voltage of the second side 122 of the transformer 120.

Then, referring to Figures 2, 4 and 11, the first switch 111 and the fourth switch 114 are turned off in the "cut off the first switch and the fourth switch 13", and after a lag time, the "on" is performed. The second switch and the third switch 14" change the direction of the induced current of the transformer 120, and the first switch 111 and the fourth switch 114 are blocked to pass a hysteresis time without directly turning on the second switch 112 and the The third switch 113 is configured to prevent the first switch 111 and the second switch 112 or the three switches 113 and the fourth switch 114 from being simultaneously turned on to short-circuit the first-stage circuit 110, thereby causing damage to the switch. At this time, the first charging circuit L1 is still turned on, and the voltage of the first energy storage element 161 gradually decreases.

Referring to Figures 2, 5 and 11, the second switch 112 and the third switch 113 are turned on in the "turning on the second switch and the third switch 14", wherein the power source S, the third switch 113, the transformer 120 The first side 121 and the second switch 112 form a current loop, such that the first side 121 generates an input current flowing from the first input end 121a to the second input end 121b via the current loop, and the second The side 122 generates an induced current flowing from the second end 122b to the first end 122a via the second charging circuit L2 to store the second energy storage element 162. At this time, the voltage of the second energy storage element 162 Will be equal to the voltage of the second side 122 of the transformer 120.

Next, please refer to Figures 2, 6 and 11 to turn off the second switch 112 and the third switch 113 in the "cut off the second switch and the third switch 15", please refer to Fig. 6, at this time, the second charging The loop L2 is still conducting, and the voltage of the second energy storage element 162 is gradually decreased.

Referring to FIGS. 2 and 11 , after the second switch 112 and the third switch 113 are turned off and after an interval of time, the third power switch and the fourth power switch 16 are turned on, and the first power switch 141 is turned off. The second power switch 142 is connected to the third power switch 143 and the fourth power switch 144. Then, refer to the figures 2, 7 and 11 to turn on the third power switch 143 and the fourth power switch 144. After an interval of time, the first switch 111 and the fourth switch 17 are turned on, and the first switch 111 and the fourth switch 114 are turned on, and the first switch 111 and the fourth switch are turned on after the interval is passed. The switch 114 can prevent the induced current of the second side 122 of the transformer 120 from being subjected to a surge interference, wherein the power source S, the first switch 111, the first side 121 of the transformer 120, and the fourth switch 114 form a a current loop that causes the first side 121 to generate an input current from the second input terminal 121b to the first input terminal 121a via the current loop, and the second side 122 generates an induced current from the first end 122a. The third charging circuit L3 flows to the first End 122b, the third energy storage element 163 to storage times, then the third energy storage element 163 equal to the voltage of the voltage transformer 120 of the second side 122.

Next, referring to Figures 2, 8 and 11, the first switch 111 and the fourth switch 114 are turned off in the "cut off first switch and fourth switch 18", please refer to Fig. 8, at this time, the third charge The loop L3 is still turned on, and the voltage of the third energy storage element 163 gradually decreases.

Referring to Figures 2, 9 and 11, after the first switch 111 and the fourth switch 114 are turned off and a hysteresis time has elapsed, "turn on the second switch and the third switch 19" to turn on the second switch 112 and The third switch 113, wherein the power source S, the third switch 113, the first side 121 of the transformer 120, and the second switch 112 form a current loop, so that the first side 121 generates an input current by the first An input terminal 121a flows to the second input end 121b via the current loop, and the second side 122 generates an induced current flowing from the second end 122b to the first end 122a via the fourth charging circuit L4. The fourth energy storage component 164 stores energy. At this time, the voltage of the fourth energy storage component 164 may be equal to the voltage of the second side 122 of the transformer 120.

Finally, please refer to Figures 2, 10 and 11 to turn off the second switch 112 and the third switch 113 in the "cut off the second switch and the third switch 20", please refer to FIG. 10, the fourth charging at this time. The loop L4 is still conducting, and the voltage of the fourth energy storage element 164 is gradually decreased.

According to the above-described control method 10 of the multiplying voltage rectifying circuit and the circuit operation of the multiplying voltage rectifying circuit 100, the present invention is characterized in that the first storage is separately performed by means of time division multiplexing (as shown in FIG. 11). The energy component 161, the second energy storage component 162, the third energy storage component 163, and the fourth energy storage component 164 are charged to make the first energy storage component 161, the second energy storage component 162, and the third The energy storage component 163 and the fourth energy storage component 164 can reach a voltage equalization, and the first energy storage component 161, the second energy storage component 162, the third energy storage component 163, and the fourth energy storage component 164. The series connection structure achieves the double voltage effect, which can greatly reduce the voltage stress required by each energy storage component, thereby reducing the structural cost of the circuit and improving the stability of the circuit.

In addition, referring to FIG. 2 and FIG. 12, in another control strategy of this embodiment, the operating frequency of the power switch group 140 of the second-stage circuit 130 can be reduced to perform energy storage of the energy storage device group 160. When the first stage circuit 110 provides the alternating signal at the same frequency (or at a different frequency) such that the second side 122 of the transformer 120 generates an alternating voltage, the power switch group 140 of the second stage circuit 130 The operation frequency can be reduced until the first stage circuit 110 completes two cycles, and then the power switch group 140 is switched. As shown in FIG. 12, when the circuit turns on the first power switch 141 and the second power switch 142, The first switch 111, the second switch 112, the third switch 113, and the fourth switch 114 of the first-stage circuit 110 are respectively turned on and off twice (causing the second side 122 of the transformer 120) After generating two cycles of alternating voltages, the first power switch 141 and the second power switch 142 are turned off and the third power switch 143 and the fourth power switch 144 are turned on. Such a control strategy can extend the The energy storage component group 160 of the second stage circuit 130 Charging time. Similarly, the control method 10 of the multi-voltage rectifier circuit of the present invention can further derivate more control strategies, so that the operation of the multi-voltage rectifier circuit 100 can be more widely used.

Referring to FIG. 13, a second embodiment of the present invention is different from the first embodiment in the first power component 151, the second power component 152, the third power component 153, and the like. The fourth power component 154 is a power switch, and the transformer 120 is limited by controlling the first power component 151, the second power component 152, the third power component 153, and the fourth power component 154 to be turned on or off. The flow of the induced current generated by the second side 122 is the same, so that the first charging circuit L1, the second charging circuit L2, the third charging circuit L3, and the fourth charging circuit L4 can be identically An energy storage component 161, the second energy storage component 162, the third energy storage component 163, and the fourth energy storage component 164 perform energy storage. In addition, since the first power component 151, the second power component 152, the third power component 153, and the fourth power component 154 are power switches, if the first energy storage component 161 and the second energy storage device When the electrical energy of the component 162, the third energy storage component 163, and the fourth energy storage component 164 is supplied to a rechargeable battery, the second-stage circuit 130 can control the first power when the rechargeable battery stores electrical energy. The element 151, the second power element 152, the third power element 153, and the fourth power element 154 are turned on or off to energize the first stage circuit 110 to become a bidirectional circuit.

Referring to FIG. 14 , an expansion structure of the first embodiment of the present invention is provided by adding the power switch in series to the power switch group 140 , the power component group 150 and the energy storage component group 160 respectively. The power component and the energy storage component, and in the same manner, the energy storage of each energy storage component in the above-mentioned time-division and multi-function manner can achieve the effect of multiple voltage.

The scope of the present invention is defined by the scope of the appended claims, and any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are within the scope of the present invention. .

10 Multi-voltage rectifier circuit control method 11 Turn on the first power switch and the second power switch 12 to turn on the first switch and the fourth switch 13 Turn off the first switch and the fourth switch 14 Turn on the second switch and the third switch 15 The second switch and the third switch 16 turn on the third power switch and the fourth power switch. 17 Turn on the first switch and the fourth switch. 18 Turn off the first switch and the fourth switch. 19 Turn on the second switch and the third switch. 20 Turn off the second switch and Third switch 100 multiple voltage rectifier circuit 110 first stage circuit 111 first switch 112 second switch 113 third switch 114 fourth switch 120 transformer 121 first side 121a first input 121b second input 122 second side 122a first end 122b second end 130 second stage circuit 140 power switch group 141 first power switch 142 second power switch 143 third power switch 144 fourth power switch 150 power component group 151 first power component 152 second power component 153 third power component 154 fourth power component 160 Component group 161 first energy storage component 162 second energy storage component 163 third energy storage component 164 fourth energy storage component 200 voltage doubler rectifier circuit 210 transformer 211 first input terminal 212 second input terminal 220 first capacitor 230 second Capacitor 240 Third capacitor 250 Fourth capacitor 260 First diode 270 Second diode 280 Third diode 290 Fourth diode L1 First charging circuit L2 Second charging circuit L3 Third charging circuit L4 Fourth charging circuit S Power supply S1 Positive S2 Negative C Controller N1 First node N2 Second node N3 Third node N4 Fourth node N5 Fifth node N6 Sixth node N7 seventh node n1 first node n2 second node The third node n3 n4 n5 fifth node, a fourth node

Figure 1 is a circuit diagram of a multiple voltage rectification circuit in accordance with a first embodiment of the present invention. Fig. 2 is a flow chart showing a control method of a multiple voltage rectification circuit according to a first embodiment of the present invention. Figure 3 is a schematic diagram showing the operation of the multi-voltage rectifier circuit in accordance with a first embodiment of the present invention. Figure 4 is a schematic diagram showing the operation of the multi-voltage rectifier circuit in accordance with a first embodiment of the present invention. Figure 5 is a schematic diagram showing the operation of the multi-voltage rectifier circuit in accordance with a first embodiment of the present invention. Figure 6 is a schematic diagram showing the operation of the multi-voltage rectifier circuit according to the first embodiment of the present invention. Figure 7 is a schematic diagram showing the operation of the multi-voltage rectifier circuit according to the first embodiment of the present invention. Figure 8 is a schematic diagram showing the operation of the multi-voltage rectifier circuit in accordance with a first embodiment of the present invention. Figure 9 is a schematic diagram showing the operation of the multi-voltage rectifier circuit according to the first embodiment of the present invention. Figure 10 is a schematic diagram showing the operation of the multi-voltage rectifier circuit in accordance with the first embodiment of the present invention. Figure 11 is a diagram showing the control strategy of the multi-voltage rectifier circuit in accordance with the first embodiment of the present invention. Figure 12: Control strategy of the multiple voltage rectification circuit in accordance with a first embodiment of the present invention. Figure 13 is a circuit diagram of a multiple voltage rectification circuit in accordance with a second embodiment of the present invention. Figure 14 is a schematic view showing the expanded structure of the multi-voltage rectifier circuit according to the first embodiment of the present invention. Figure 15: A conventional double voltage rectifier circuit.

100 multiple voltage rectifier circuit 110 first stage circuit 111 first switch 112 second switch 113 third switch 114 fourth switch 120 transformer 121 first side 121a first input end 121b second input end 122 second side 122a first End 122b second end 130 second stage circuit 140 power switch group 141 first power switch 142 second power switch 14 3 third power switch 144 fourth power switch 150 power component group 151 first power component 152 second power component 153 third power component 154 fourth power component 160 energy storage component group 161 first energy storage component 162 second energy storage Element 163 Third energy storage element 164 Fourth energy storage element S Power supply S1 Positive S2 Negative C Controller N1 First node N2 Second node N3 third node N4 fourth node N5 fifth node N6 sixth node N7 seventh node

Claims (9)

A multi-voltage rectifier circuit comprising: a first-stage circuit for providing an alternating signal; a transformer having a first side and a second side, wherein the first side is electrically connected to the first stage a circuit, the second side of the transformer has a first end and a second end; and a second stage circuit electrically connected to the second side of the transformer, the second stage circuit has a power switch group, a a power component group and an energy storage component group, the power switch group has a first power switch, a second power switch, a third power switch and a fourth power switch, the power component group has a first power component, a second power component, a third power component, and a fourth power component, the energy storage component group having a first energy storage component, a second energy storage component, a third energy storage component, and a fourth energy storage component The second side of the transformer, the first power switch, the first power component, the first energy storage component, and the second power switch form a first charging circuit, the second side of the transformer, the first a power switch, the second energy storage component, The second power component and the second power switch form a second charging circuit, and the second side of the transformer, the third power switch, the fourth energy storage component, the fourth power component, and the fourth power switch are configured a third charging circuit, the second side of the transformer, the fourth power switch, the third power component, the third energy storage component and the third power switch form a fourth charging circuit, the first energy storage The second power storage component, the third energy storage component, and the fourth energy storage component are connected in series, wherein two ends of the first power switch are respectively connected to the first end and a first node, and the second The two ends of the power switch are respectively connected to the second end and the second node, and the two ends of the third power switch are respectively connected to the first end and a third node, and the two ends of the fourth power switch are respectively connected to the first Two ends and one fourth node. The multiple voltage rectification circuit of claim 1, wherein the first power switch and the second power switch are simultaneously turned on or off, and the third power switch and the fourth power switch are simultaneously Turning on or off, and when the first power switch and the second power switch are turned on, the third power switch and the fourth power switch are turned off, and when the third power switch and the fourth power switch are turned on, The first power switch and the second power switch are turned off. For example, in the multi-voltage rectifier circuit described in claim 1, when one of the charging circuits is turned on, the other three charging circuits are turned off. The multi-voltage rectifier circuit of claim 1, wherein the first power component, the second power component, the third power component, and the fourth power component are power switches. The multi-voltage rectifier circuit of claim 1, wherein the first power component, the second power component, the third power component, and the fourth power component are power diodes. The multi-voltage rectifier circuit of claim 1, wherein the first power component is respectively connected to the first node and the fifth node to prevent a current from flowing from the fifth node to the first node. a node, the two ends of the second power component are respectively connected to a sixth node and the first node, so as to prevent a current from flowing from the first node to the sixth node, and the two ends of the third power component are respectively connected to the fourth node a node and the sixth node, to prevent a current from flowing from the sixth node to the fourth node, wherein the fourth power component is connected to a seventh node and the fourth node respectively to avoid a current from the fourth node The node flows to the seventh node. The multi-voltage rectifier circuit of claim 6, wherein the two ends of the first energy storage component are respectively connected to the fifth node and the second node, and the two ends of the second energy storage component are respectively connected to the The second node and the sixth node, the two ends of the third energy storage component are respectively connected to the sixth node and the third node, and the two ends of the fourth energy storage component are respectively connected to the third node and the seventh node . The multi-voltage rectifier circuit of claim 1, wherein the first-stage circuit is a full-bridge rectifier circuit, the first-stage circuit has a power source, a first switch, a second switch, and a a third switch and a fourth switch, the power source has a positive pole and a negative pole, the first side of the transformer has a first input end and a second input end, the first switch and the two ends are respectively connected to the positive pole and The first input end, the two ends of the second switch are respectively connected to the first input end and the negative pole, and the two ends of the third switch are respectively connected to the positive pole and the second input end, respectively Connecting the second input terminal and the negative electrode. A control method for using a multi-voltage rectifier circuit according to claim 8 , comprising: turning on the first power switch and the second power switch, and turning off the third power switch and the fourth power switch; Turning on the first switch and the fourth switch after turning on the first power switch and the second power switch, wherein the power source, the first switch, the first side of the transformer, and the fourth The switch forms a current loop, such that the first side generates an input current flowing from the second input terminal to the first input terminal, and the second side generates an induced current from the first end via the first Charging circuit flows to the second end to store energy to the first energy storage component; cut off the first switch and the fourth switch; and turns on after the first switch and the fourth switch are turned off and after a hysteresis time a second switch and the third switch, wherein the power source, the third switch, the first side of the transformer, and the second switch form a current loop, such that the first side generates an input current from the first input Via this a current loop flows to the second input end, and the second side generates an induced current flowing from the second end to the first end via the second charging loop to store energy to the second energy storage component; a switch and the third switch; turning off the first power switch after the second switch and the third switch are turned off and after an interval of time And the second power switch, and the third power switch and the fourth power switch are turned on; the first switch and the fourth switch are turned on after the third power switch and the fourth power switch are turned on and after an interval of time The first power source, the first switch, the first side of the transformer, and the fourth switch form a current loop, such that the first side generates an input current from the second input terminal to the first circuit via the current loop An input end, and the second side generates an induced current flowing from the first end to the second end via the third charging circuit to store energy to the third energy storage component; and the first switch and the fourth switch are cut off Turning on the second switch and the third switch after the first switch and the fourth switch are cut off, wherein the power source, the third switch, the first side of the transformer, and the second The switch forms a current loop, such that the first side generates an input current from the first input terminal to the second input end via the current loop, and the second side generates an induced current from the second end via the fourth Charging loop flow A first end, a fourth tank to the storage element; and the second switch is turned off and the third switch.