KR102320875B1 - series-parallel resonance device by use of phase control for wirelessly receiving power - Google Patents

Abstract

The present invention is a technique for adjusting a current amount delivered to a load by controlling a phase of a PWM waveform corresponding to a secondary side alternating current. The present invention relates to a technique which phase-shifts the PWM waveform of a fixed duty ratio in a state in which the duty ratio of the PWM waveform is fixed in adjusting the current amount through PWM waveform control for a secondary side alternating current waveform that supplies the secondary side alternating current to the load, thereby adjusting the current amount delivered to the load through the secondary side alternating current waveform. According to the present invention, a phase control member for controlling a current output voltage of an output terminal is installed to automatically enable phase control of a control signal according to a change of a present output voltage of the output terminal.

Description

Phase control-based series-parallel resonance device for wireless power reception {series-parallel resonance device by use of phase control for wirelessly receiving power}

The present invention relates to a technique for adjusting the amount of current delivered to a load by controlling the phase of a PWM waveform corresponding to a secondary-side alternating current.

More specifically, the present invention provides PWM of the fixed duty ratio in a state where the duty ratio of the PWM waveform is fixed in adjusting the current amount through PWM waveform control for the secondary AC waveform that supplies the secondary AC to the load. It relates to a technology that adjusts the amount of current delivered to the load through the secondary AC waveform as a result of phase shifting the waveform.

[FIG. 1] is an exemplary diagram mathematically modeling a plurality of resonance types in a general secondary-side AC. Referring to [FIG. 1], a wireless receiving coupler member (eg, a coil member), which is a secondary-side receiving end in the field of wireless power transmission, resonates while connected to various patterns of circuitry.

For example, a series resonance type as in (a) of [Fig. 1], a parallel resonance type as in (b) of [Fig. 1], a series-parallel resonance type as in (c) of [Fig. 1], LCCL resonance type as in (d) is mentioned.

Here, the series-parallel resonance type as shown in (c) of [Fig. 1] compensates for the shortcomings of the series resonance type as shown in Fig. 1(a) and the parallel resonance type as shown in Fig. 1(b). It is prepared by taking advantage of each.

And, (c) of Fig. 1 of LCCL resonance types such as (d) in [1] in the (c) and Fig. 1 by adding a series capacitor (C _S) for the same series-parallel resonance type and In the same series-parallel resonance type, it can cope with an increase in inductance.

At this time, as a method of controlling the operation of the LCCL resonance in the LCCL resonance type as shown in (d) of FIG. 1, the duty ratio of PWM was controlled.

Hereinafter, a detailed look at the process of controlling the duty ratio of PWM in the LCCL resonance type as shown in (d) of FIG. 1 is as follows.

First, [Fig. 2] is an exemplary diagram showing an alternating current flow in a state in which the first switching transistor and the second switching transistor are switched on in the LCCL resonance type circuit network corresponding to (d) of [Fig. 1], [Fig. 3] ] is an exemplary diagram showing an AC flow in a state in which the first switching transistor is switched off and the second switching transistor is switched on in [FIG. 2], and [FIG. 4] is when the AC flow of the opposite phase occurs in [FIG. It is an exemplary view showing an alternating current flow in a state in which the first switching transistor and the second switching transistor are switched on, respectively, [Fig. 5] is a state in which the second switching transistor is switched off and the first switching transistor is switched on in [Fig. 4] It means an example diagram showing the flow of alternating current.

In [Fig. 2] and [Fig. 4], as both the first switching transistor 23 and the second switching transistor 24 are switched on, the current is not supplied to the load, [Fig. 3] and [Fig. 5] shows a state in which current is supplied to the load as the first switching transistor 23 and the second switching transistor 24 are respectively switched off/on and switched on/off.

That is, as in [Fig. 2] to [Fig. 5], when the secondary side AC flows in the circuit network of the secondary side receiving end, it is necessary to adjust the amount of current delivered to the load as in [Fig. 3] and [Fig. 5]. To this end, we will look at it in detail through [Fig. 6] to [Fig. 8] below.

[FIG. 6] is an exemplary diagram showing a state in which a square wave of positive/minus pulses is phase-locked with respect to the secondary AC waveform (C1) of opposite phases according to [FIG. 2] to [FIG. 5], [FIG. 7] ] is to increase or decrease the amount of current delivered to the load in [FIG. 3] and [FIG. It is an exemplary view, and [Fig. 8] is transmitted to the load on [Fig. 3] and [Fig. 5] as the phase of the square wave formed in the secondary AC waveform (C1) on [Fig. 6] changes due to drift. It is an example diagram that the amount of current is changed.

First, in the region where the positive pulse square wave of FIG. 6 is switched off, the first switching transistor 23 is switched off as in FIG. 3 , and the positive pulse square wave of FIG. 6 is switched off. The shaded part, which is a common part of the and secondary AC waveform C1, represents the amount of current delivered to the load.

At this time, in the region where the negative pulse square wave of FIG. 6 is switched off, the second switching transistor 24 is switched off as in FIG. 5 , and the negative pulse square wave of FIG. 6 is switched off. The shaded part, which is a common part of the and secondary AC waveform C1, represents the amount of current delivered to the load.

And, in the region where the positive pulse square wave of [FIG. 7] (a) is switched off, the first switching transistor 23 is switched off as in [FIG. 3], and the positive pulse of [FIG. 7] (a) is switched off. The area where the square wave is switched off and the shaded part, which is a common part of the secondary AC waveform C1, indicate the amount of current delivered to the load.

At this time, in the region where the negative pulse square wave of [Fig. 7] (a) is switched off, the second switching transistor 24 is switched off as in [Fig. 5], and the negative pulse of [Fig. 7] (a) is switched off. The area where the square wave is switched off and the shaded part, which is a common part of the secondary AC waveform C1, indicate the amount of current delivered to the load.

That is, when it is necessary to adjust the amount of current in the process of transmitting the amount of current corresponding to the shaded part in [Figure 7] (a), the duty ratio of the PWM square wave as shown in [Figure 7] (b) in the prior art. By adjusting (eg increasing), you can adjust (eg decrease) the amount of current delivered to the load as a result.

However, as in [Fig. 8], if the pulse square wave naturally drifts to the right from the slanted region, the amount of current for load transmission corresponding to the shaded part is changed (eg, disappears), and as a result, the amount of current delivered to the load There is a problem in that the control of the

Since the secondary side AC is induced wirelessly by the primary side AC, the primary side frequency and the secondary side frequency must be synchronized. Since it is impossible in reality to synchronize each frequency completely accurately, the pulse square wave naturally drifts without accurate phase synchronization. There is a problem that cannot be avoided.

For example, even if there is a slight difference between the frequency of 10 kHz and the frequency of 10.1 kHz, since drift naturally occurs over time, as a result, there is a problem of phase shift as shown in FIG. 8 .

Accordingly, the above problems of the prior art are solved by fixing the duty ratio of the control signal for switching on/off the switching transistor and adjusting the amount of secondary-side AC current delivered to the load according to the method of controlling the phase of the control signal. A technology that can be implemented is required.

The present invention has been proposed in view of the above, and an object of the present invention is to control the amount of secondary-side AC current delivered to the load as a result by adjusting the phase of the control signal of a fixed duty ratio for switching on/off a switching transistor. An object of the present invention is to provide a serial-parallel resonator device for wireless power reception based on phase control to adjust.

In order to achieve the above object, the serial/parallel resonance device for wireless power reception based on phase control according to the present invention generates power induced from a magnetic field by an external primary-side current and provides a secondary-side AC by generating a wireless receiving coupler member ( 110); a diode rectifier 120 extending from both ends of the wireless receiving coupler member and connected in parallel between an output terminal connected to an external load and a wireless receiving coupler member to rectify secondary-side alternating current; a resonant member 130 connected in parallel or series-parallel between the wireless receiving coupler member and the diode rectifier to resonate with the secondary AC; a transistor control member 140 for controlling switching on/off by providing a control signal having a fixed duty ratio to one or more switching transistors provided in the diode rectifier so that the movement direction of the secondary-side AC is adjusted; and a phase control member 150 that adjusts the amount of current output to the output terminal as the phase of the control signal is controlled in response to the pulse of the secondary-side AC.

In addition, the diode rectifier 120 includes a first diode 121 connected to a wire connecting one end of the resonant member and the output terminal and forwardly rectifying a current flow from the resonant member to one end of the output terminal; a second diode 122 connected in parallel to the connecting wire a connecting the first diode and one end of the output terminal, connected to the wire extending to the other end of the output terminal, and for rectifying the current flow from the other end of the output terminal in the direction of the connecting wire a; The resonance member and the first diode are connected to the conductive wire extending from the connecting wire b to the other end of the output terminal, and the current flow from the other end of the output terminal in the direction of the connecting wire b is rectified in the forward direction, and the current flows from the connecting wire b to the other end of the output terminal. a first switching transistor 123 for switching on and off to rectify in the reverse direction; It is connected between the connecting conductor c and the connecting conductor a connecting the other end of the output terminal and the first switching transistor to the conducting wire that runs in parallel with the connecting conductor c and the connecting conductor a. and a second switching transistor 124 for rectifying and switching on and off the current flow from the connecting wire a to the connecting wire c in a reverse direction.

At this time, the conductive wire connecting the second switching transistor and the second diode may be interconnected to have an equipotential potential with the other end of the wireless receiving coupler member, and the transistor control member 140 is individually fixed to the first switching transistor and the second switching transistor. It may be configured to control switching on/off by providing a control signal of a duty ratio.

In addition, the resonance member 130, a series resonance capacitor 131 resonating in series with one end of the wireless reception coupler member corresponding to between the wireless reception coupler member and the diode rectifier; a resonant inductor 132 resonating with the series resonant capacitor while being connected to a wire connecting the series resonant capacitor and the diode rectifier; A parallel resonant capacitor 133 resonating with the series resonant capacitor and the resonant inductor in a state of being connected between the wire connecting the series resonant capacitor and the resonant inductor and the wire connecting the other end of the wireless receiving coupler member and the diode rectifier; may be provided.

Meanwhile, the present invention may further include a low-pass filter member 160 for low-pass filtering the current passing through the diode rectifier while being connected between the diode rectifier and the output terminal.

In this case, the low-pass filter 160 may include a filter capacitor mounted on a wire connecting the connecting wire a and one end of the output end and the conducting wire connecting the other end of the diode rectifier and the other end of the output end.

The present invention adjusts a phase for a control signal of a fixed duty ratio that switches on/off for one or more switching transistors provided in an LCCL resonance network by providing a transistor control member and a phase control member, resulting in a secondary side transmitted to a load It shows the advantage of being able to accurately adjust the amount of current of alternating current.

In addition, as the present invention includes a phase control member (eg, PI controller) for controlling the current output voltage of the output terminal, it is possible to automatically control the phase of the control signal according to the change of the current output voltage of the output terminal. indicates.

In addition, the present invention also shows an advantage that it is not necessary to adjust the phase synchronization of a separate frequency as in the prior art in order to adjust the phase of the control signal of the fixed duty ratio. However, in order to adjust the phase in the present invention, the phase synchronization of the frequency is not excluded.

[Figure 1] is an exemplary diagram mathematically modeling a plurality of resonance types in a general secondary-side AC;
[FIG. 2] is an exemplary diagram showing an AC flow in a state in which the first switching transistor and the second switching transistor are respectively switched on in the LCCL resonance type circuit network corresponding to (d) of [FIG. 1];
[FIG. 3] is an exemplary view showing an alternating current flow in a state in which the first switching transistor is switched off and the second switching transistor is switched on in [FIG. 2];
[FIG. 4] is an exemplary diagram showing an AC flow in a state in which the first switching transistor and the second switching transistor are switched on, respectively, when an AC flow of opposite phase occurs in [FIG. 2];
[FIG. 5] is an exemplary diagram showing an alternating current flow in a state in which the second switching transistor is switched off and the first switching transistor is switched on in FIG. 4;
[FIG. 6] is an exemplary diagram showing a state in which a square wave of positive / negative pulses is phase-locked with respect to the secondary side AC waveform (C1) of opposite phases according to [FIG. 2] to [FIG. 5],
[Figure 7] increases the amount of current delivered to the load on [Figures 3] and [Figure 5] through adjustment to reduce or increase the duty ratio of the square wave with respect to the secondary AC waveform (C1) in [Figure 6]. Examples of reducing or reducing
[Fig. 8] shows that the amount of current delivered to the load on [Fig. 3] and [Fig. 5] changes as the phase of the square wave formed in the secondary AC waveform (C1) on [Fig. 6] changes due to drift. example diagram,
9 is a serial-parallel resonance device for wireless power reception based on phase control according to the present invention, in which a first switching transistor and a second switching transistor in the LCCL resonance type circuit network corresponding to (d) of FIG. 1 are An example diagram showing an alternating current flow in each switched-on state,
[FIG. 10] is an exemplary view showing an alternating current flow in a state in which the first switching transistor is switched off and the second switching transistor is switched on in [FIG. 9];
[FIG. 11] is an exemplary diagram showing an AC flow in a state in which the first switching transistor and the second switching transistor are switched on, respectively, when an AC flow of opposite phase occurs in [FIG. 9];
[FIG. 12] is an exemplary diagram showing an alternating current flow in a state in which the second switching transistor is switched off and the first switching transistor is switched on in FIG. 11;
[FIG. 13] is an exemplary diagram showing a state in which a square wave of positive/minus pulses is implemented in response to the secondary side AC waveform C2 of opposite phases according to FIGS. 9 to 12;
[FIG. 14] is an exemplary view of increasing the amount of current delivered to the load in [FIG. ,
[FIG. 15] is an exemplary view of increasing the amount of current delivered to the load in [FIG. am.

Hereinafter, the present invention will be described in detail with reference to the drawings.

[FIG. 9] is a series-parallel resonance device for wireless power reception based on phase control according to the present invention, in which a first switching transistor and a second switching transistor in the LCCL resonance type circuit network corresponding to (d) of [FIG. 1] are It is an exemplary view showing the alternating current flow in each switched-on state, [Fig. 10] is an exemplary view showing the alternating current flow in a state in which the first switching transistor is switched off and the second switching transistor is switched on in [Fig. 9], [Fig. 11] is an exemplary view showing an AC flow in a state in which the first switching transistor and the second switching transistor are switched on, respectively, when an AC flow of opposite phase occurs in [FIG. 9], and [FIG. 12] is the second in FIG. It is an exemplary view showing an alternating current flow in a state in which the second switching transistor is switched off and the first switching transistor is switched on.

First, if the secondary side AC flow indicated by the 'dotted arrow' in [Fig. 9] and [Fig. 10] corresponds to the positive pulse phase, the secondary side indicated by the 'dotted line arrow' in [Fig. 11] and [Fig. 12] The alternating current corresponds to the negative pulse phase as the opposite phase of [FIG. 9] and [FIG. 10].

On the other hand, the state of [FIG. 9] is 2 as shown by the 'dotted arrow' in [FIG. 9] by switching on both the first switching transistor 123 and the second switching transistor 124 under the control of the transistor control member 140. It indicates a state in which a secondary AC is formed and no current flows to the 'load' of the output stage.

The state of [FIG. 10] is 2 as shown by the 'dotted arrow' in [FIG. 10] by switching off the first switching transistor 123 and switching on the second switching transistor 124 under the control of the transistor control member 140 It represents a state in which a secondary AC is formed and current flows through the 'load' of the output stage.

The state of [FIG. 11] is the secondary-side AC as shown in the 'dotted arrow' of [FIG. 11] by switching on both the first switching transistor 123 and the second switching transistor 124 under the control of the transistor control member 140. is formed to indicate a state in which current does not flow to the 'load' of the output stage.

The state of [Fig. 12] is 2 as shown in the 'dotted arrow' of [Fig. 12] by switching on the first switching transistor 123 and switching off the second switching transistor 124 under the control of the transistor control member 140. It represents a state in which a secondary AC is formed and current flows through the 'load' of the output stage.

As such, as the first switching transistor 123 and the second switching transistor 124 are individually switched on/off as shown in FIGS. 9 to 12, the flow of current transferred to the 'load' of the output terminal is controlled. can be controlled

Here, a key feature of the present invention is to exclude the conventional method of adjusting the duty ratio of PWM with respect to a control signal for individually switching on/off the first switching transistor 123 and the second switching transistor 124, and By adopting the method of adjusting (moving) the phase of the control signal, the result is that the amount of current delivered to the 'load' of the output stage is precisely adjusted.

The serial-parallel resonator device for wireless power reception based on phase control according to the present invention according to the present invention so that the secondary-side AC flow as shown in [Fig. 9] to [Fig. 12] can be transmitted to the 'load' in an asynchronous manner, The coupler member 110 , the diode rectifier 120 , the resonance member 130 , the transistor control member 140 , the phase control member 150 , and the low-pass filter member 160 may be included.

The wireless receiving coupler member 110 provides secondary-side alternating current by generating power induced from a magnetic field by an external primary-side current.

The diode rectifier 120 is connected in parallel between the wireless receiving coupler member 110 and the output terminal respectively extending from both ends of the wireless receiving coupler member 110 and connected to an external 'load' to rectify the secondary side alternating current.

To this end, the diode rectifier 120 is preferably a first diode 121 , a second diode 122 , a first switching transistor 123 , and a second switching transistor as in FIGS. 9 to 12 . (124) may be provided.

The first diode 121 is connected to a conducting wire connecting one end of the resonance member 130 and the output terminal as shown in FIGS. 9 to 12 .

Here, the first diode 121 may forwardly rectify the current flow from the resonance member 130 in the direction of one end of the output terminal in the state in which it is disposed as shown in FIGS. 9 to 12 .

The second diode 122 may be connected in parallel to the connecting wire a connecting the first diode 121 and one end of the output terminal as shown in FIGS. 9 to 12 and connected to the conductive wire extending to the other end of the output terminal.

Here, the second diode 122 may forwardly rectify the current flow from the other end of the output terminal in the direction of the connection wire a in the state of being disposed as in FIGS. 9 to 12 .

On the other hand, the first switching transistor 123 is connected to a wire extending from the connecting wire b connecting the resonance member 130 and the first diode 121 to the other end of the output terminal as shown in FIGS. 9 to 12 .

And, the first switching transistor 123 can forward rectify the current flow from the other end of the output terminal in the direction of the connection wire b to the other end of the output terminal from the connection wire b as in [Fig. 9] to [Fig. 12]. Switch on/off to reverse rectify the current flow.

On the other hand, the second switching transistor 124 is connected with the connecting line c between the connecting line c and the connecting line a connecting the other end of the output terminal and the first switching transistor 123 as shown in FIGS. 9 to 12 . It is connected to a conductor running parallel to conductor a.

In addition, the second switching transistor 124 can forward rectify the current flow from the connecting wire c to the connecting line a as shown in Figs. 9 to 12, and from the connecting line a to the connecting line c. Switch on/off to reverse rectify the current flow.

At this time, the conductive wire connecting the second switching transistor 124 and the second diode 122 is connected to the other end of the wireless receiving coupler member 110 as shown in FIGS. 9 to 12 , and thus the wireless receiving coupler member. (110) may be equipotential with the other end.

The resonant member 130 may be connected in parallel or series-parallel between the wireless receiving coupler member 110 and the diode rectifier 120 to resonate with the secondary AC.

To this end, the resonance member 130 may preferably include a series resonance capacitor 131 , a resonance inductor 132 , and a parallel resonance capacitor 133 as shown in FIGS. 9 to 12 .

The series resonance capacitor 131 is connected in series with one end of the wireless receiving coupler member 110 corresponding to between the wireless receiving coupler member 110 and the diode rectifier 120 as in [Fig. 9] to [Fig. 12]. It resonates in cooperation with the wireless receiving coupler member 110 .

The resonant inductor 132 is connected to a wire connecting the series resonant capacitor 131 and the diode rectifier 120 as shown in FIGS. 9 to 12, and the wireless receiving coupler member 110 and the series resonant capacitor 131 resonates with

The parallel resonant capacitor 133 is a conductive wire connecting the series resonant capacitor 131 and the resonant inductor 132 and the other end of the wireless receiving coupler member 110 and the diode rectifier 120 as shown in FIGS. 9 to 12 . It resonates with the series resonant capacitor 131 and the resonant inductor 132 in a state of being connected between the conductors connecting them.

The transistor control material 140 has a fixed duty ratio with respect to one or more switching transistors 123 and 124 provided in the diode rectifier 120 so that the movement direction of the secondary-side AC is adjusted as shown in FIGS. 9 to 12 . Switching on/off is controlled by providing a control signal of

That is, the transistor control material 140 has a fixed duty ratio with respect to the first switching transistor 123 and the second switching transistor 124 provided in the diode rectifier 120 as shown in FIGS. 9 to 12 . By individually providing control signals, switching on/off is controlled.

The phase control member 150 adjusts the amount of current output to the output terminal by controlling the phase of the control signal in response to the pulse of the secondary-side AC as shown in FIGS. 9 to 12 .

Here, the transistor control material 140 and the phase control material 150 are separated to explain the sequence of each operation, for example, by adopting a single module such as 'PI controller', the transistor control material 140 and the phase control material A function that 150 is responsible for may be implemented.

The transistor control material 140 and the phase control material 150 will be looked at again through [Fig. 13] to [Fig. 15] below.

The low-pass filter member 160 low-pass filters the current passing through the diode rectifier 120 in a state connected between the diode rectifier 120 and the output terminal as shown in FIGS. 9 to 12, and preferably a filter A capacitor may be provided.

Here, the filter capacitor is to be mounted on the wire connecting the connecting wire a and one end of the output end and the conducting wire connecting the other end of the diode rectifier 120 and the other end of the output end to each other as in [Fig. 9] to [Fig. 12]. can

As such, when the serial-parallel resonance device for wireless power reception based on phase control according to the present invention is configured as shown in FIGS. 9 to 12, the first and second switching transistors 123 and 124 are individually switched It is possible to adjust the phase of the control signal of a fixed duty ratio that is turned on and off, and accordingly, it is possible to accurately adjust the amount of secondary AC current delivered to the 'load'.

That is, in order to precisely adjust the amount of current delivered to the 'load' of the output stage, a control signal of a fixed duty ratio for individually switching on/off the first and second switching transistors 123 and 124 is applied with the transistor control member 140 in phase. How to implement through the control member 150 will be looked at through [Fig. 13] to [Fig. 15].

[FIG. 13] is an exemplary view showing a state in which a square wave of positive/minus pulses is implemented in response to the secondary side AC waveform C2 of opposite phase according to FIGS. 9 to 12, and [FIG. 14] ] is an exemplary diagram of increasing the amount of current delivered to the 'load' in [FIG. , [FIG. 15] increases the amount of current delivered to the 'load' on [FIG. It is an example of doing

First, the region in which the positive pulse square wave is OFF in [FIG. 13] to [FIG. 15] represents the condition in which the secondary-side AC flow corresponding to [FIG. 10] is formed and the current flows to the 'load'.

And, the region in which the negative pulse square wave is OFF in [FIG. 13] to [FIG. 15] represents a condition in which secondary-side AC flow corresponding to [FIG. 12] is formed and current flows to the 'load'.

On the other hand, the region in which the positive pulse square wave is ON in [FIG. 13] to [FIG. 15] represents a condition in which the secondary side AC flow corresponding to [FIG. 9] is formed and no current flows to the 'load' .

And, the region in which the negative pulse square wave is ON in [FIG. 13] to [FIG. 15] represents a condition in which the secondary side AC flow corresponding to [FIG. 11] is formed and no current flows to the 'load' .

As a result, as in [Fig. 14] and [Fig. 15], 2 as in [Fig. When the phase of the positive/minus pulse square wave is controlled based on the secondary AC waveform (C2), the area in which the positive/minus pulse square wave is OFF and the shaded part that is a common part of the secondary AC waveform (C2) As much current flows through the 'load' of the output stage.

Here, the secondary AC waveform C2 in [FIG. 13] to [FIG. 15] is wirelessly transmitted from the primary side and cannot be adjusted, but the plus/minus pulse square wave adjusts the duty ratio of PWM or adjusts the duty ratio It can be adjusted by controlling the phase of the fixed duty ratio without

Since the present invention excludes the natural drift phenomenon that occurs when the PWM duty ratio of the pulsed square wave is adjusted, only the phase control that shifts the phase of the pulsed square wave of the fixed duty ratio as in [Figs. It is possible to adjust the amount of current flowing through the 'load'.

At this time, the switching on/off of the positive/minus pulse square wave in FIGS. 13 to 15 for the first and second switching transistors 123 and 124 may be configured such that the transistor control unit 140 is responsible for it. and the phase control for shifting the phase of the plus/minus pulse square wave as shown in FIGS. 14 and 15 may be configured such that the phase control member 150 is responsible.

10: absence of a wireless receiving coupler
20: diode rectifier
21: first diode
22: second diode
23: first switching transistor
24: second switching transistor
30: absence of resonance
31: series resonant capacitor
32: resonant inductor
33: parallel resonant capacitor
60: low-pass filter member
C1, C2: Secondary AC waveform
110: wireless receiving coupler member
120: diode rectifier
121: first diode
122: second diode
123: first switching transistor
124: second switching transistor
130: absence of resonance
131 series resonant capacitor
132: resonant inductor
133: parallel resonant capacitor
140: transistor control material
150: phase control material
160: low-pass filter member

Claims (4)

a wireless receiving coupler member 110 for providing secondary-side alternating current by generating power induced from a magnetic field by an external primary-side current;
a diode rectifier 120 extending from both ends of the wireless receiving coupler member and connected in parallel between an output terminal connected to an external load and the wireless receiving coupler member to rectify the secondary AC;
a resonant member 130 connected in parallel or series-parallel between the wireless receiving coupler member 110 and the diode rectifier 120 to resonate with the secondary AC;
A transistor control member 140 for controlling switching on/off by providing a square wave control signal having a fixed duty ratio to one or more switching transistors 123 and 124 provided in the diode rectifier 120 so that the movement direction of the secondary-side AC is adjusted. );
As the phase of the square wave control signal of the fixed duty ratio with respect to the pulse of the secondary AC is moved and controlled, the on-off section of the square wave control signal of the fixed duty ratio and the pulse of the secondary AC overlap by the relative relationship. a phase control member 150 for increasing or decreasing the amount of current output to the output terminal by changing an area in which a secondary AC flow to the output terminal is formed;
A serial-parallel resonator device for wireless power reception based on phase control comprising a.
The method according to claim 1,
The diode rectifier 120,
a first diode 121 connected to a wire connecting one end of the resonant member and the output terminal and forwardly rectifying a current flow from the resonance member to one end of the output terminal;
A second second that is connected in parallel to the connecting wire a connecting the first diode and the one end of the output terminal and is connected to the wire extending to the other end of the output terminal and forwardly rectifies the flow of current from the other end of the output terminal in the direction of the connecting wire a diode 122;
The resonance member and the first diode are connected to a wire extending from the connecting wire b connecting the first diode to the other end of the output terminal, and a current flow from the other end of the output terminal in the direction of the connecting wire b is rectified in a forward direction, and from the connecting wire b to the output terminal a first switching transistor 123 for switching on/off the current flow in the other end direction to be rectified in the reverse direction;
The other end of the output terminal and the first switching transistor are connected between the connecting wire c and the connecting wire a, and connected to a line running in parallel with the connecting wire c and the connecting wire a, in the direction of the connecting wire a from the connecting wire c a second switching transistor 124 for rectifying a current flow in a forward direction and switching on and off to rectify a current flow from the connection wire a to the connection wire c in a reverse direction;
to provide
A wire connecting the second switching transistor 124 and the second diode 122 is interconnected so as to have an equipotential potential with the other end of the wireless receiving coupler member 110,
The transistor control member 140 individually provides a square wave control signal of the fixed duty ratio to the first switching transistor 123 and the second switching transistor 124 to control switching on/off. Serial-parallel resonator for control-based wireless power reception.
3. The method according to claim 2,
The resonance member 130 is
a series resonant capacitor 131 connected in series with one end of the radio receiving coupler member corresponding between the radio receiving coupler member and the diode rectifier and resonating;
a resonant inductor 132 resonating with the series resonant capacitor while being connected to a wire connecting the series resonant capacitor and the diode rectifier;
a parallel resonant capacitor 133 resonating with the series resonant capacitor and the resonant inductor while being connected between a wire connecting the series resonant capacitor and the resonant inductor and a wire connecting the other end of the wireless receiving coupler member and the diode rectifier;
A serial-parallel resonance device for wireless power reception based on phase control, characterized in that it comprises a.
4. The method according to claim 3,
a low-pass filter member 160 for low-pass filtering the current passing through the diode rectifier while being connected between the diode rectifier and the output terminal;
Consists of further comprising,
The low-pass filter member 160,
a filter capacitor mounted on a conductive wire connecting the connecting wire a and one end of the output terminal and the conductive wire connecting the other end of the diode rectifier and the other end of the output terminal;
A serial-parallel resonance device for wireless power reception based on phase control, characterized in that it comprises a.

Images