Multi-mode wireless charging system based on double-side reconstruction

Abstract

The invention discloses a multi-mode wireless charging system based on double-side reconstruction, relates to the field of wireless charging, and aims to solve the problems of complex structure, large reactive circulation, high system loss and high cost of a wireless charging system adaptive to batteries of multiple specifications in the prior art. A switch is arranged between a high-frequency inverter and a transmitting compensation network, an MOS (Metal Oxide Semiconductor) tube is adopted at a rectifier at a receiving side, and switches are arranged at a receiving compensation network and the rectifier, so that double-side reconfiguration of the transmitting side and the receiving side is realized. Therefore, zero-phase-angle operation is achieved, low system loss is maintained, the change of working modes is achieved through the MOS tube and the action of the switch, the action is rapid, simple and convenient, no reactive circulation exists, and high electric energy transmission efficiency is maintained. The system is simple in structure, low in hardware cost, light in weight, small in occupied space and low in information processing requirement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless charging, in particular to a multi-mode wireless charging system based on double-sided reconstruction. BACKGROUND

[0002] As a widely used energy storage device in the field of wireless power transmission technology, lithium ion batteries usually adopt a charging method of constant current first and then constant voltage to prolong the charging life. In fact, different specifications of batteries also need different voltage levels for power supply, and the traditional charging equipment cannot realize charging for different battery loads. Therefore, it is of great significance to design a wireless power transmission system that can charge different specifications of batteries.

[0003] At present, in order to realize multi-specification output for lithium battery application in the wireless power transmission system, researchers have proposed various typical control methods, including phase shift modulation, frequency conversion control and DC-DC auxiliary control. Among them, the phase shift modulation technology controls the system output by adjusting the inverter output voltage. However, this method is difficult to realize zero phase angle operation under the condition of large load change, thereby increasing the system loss. The frequency conversion control makes the system realize different outputs by continuously adjusting the working frequency. However, this way will cause a large amount of reactive current, which greatly reduces the power transmission efficiency of the system. The DC-DC auxiliary control makes the system maintain stable voltage output under different load conditions by installing an additional DC-DC converter. However, due to the introduction of an additional DC-DC circuit, not only the system loss is increased, but also the hardware cost, weight and installation space are increased. In summary, although the above typical control schemes can realize multi-specification output, they need real-time and fast information processing, and face the problem of complex controller design. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the existing defects and provide a multi-mode wireless charging system based on double-sided reconstruction, which can effectively solve the problems in the background art.

[0005] In order to achieve the above purpose, the present application discloses a multi-mode wireless charging system based on double-sided reconstruction, which adopts the technical scheme of including a transmitting side and a receiving side, the transmitting side and the receiving side are mutually inductive, the transmitting side has a direct current input voltage source , a high-frequency inverter and a transmitting compensation network connected in sequence, the receiving side has a receiving compensation network and a rectification structure, the high-frequency inverter includes MOS tubes , MOS tubes , MOS tubes and MOS tubes , MOS tubes and MOS tubes are connected in series, MOS tubes and MOS tubes MOSFETs in series MOSFETs MOSFETs MOSFETs MOSFETs in parallel, characterized in that the high-frequency inverter is a reconfigurable inverter, and there is a switch between the transmission compensation network and the high-frequency inverter , and the transmission compensation network is connected with an inductor as a transmission coil ; there is a switch between the reception compensation network and the rectification structure on the reception side , and the reception compensation network is connected with an inductor as a reception coil , the rectification structure is a set of MOSFETs in series connected in parallel with a set of diodes in series, and the rectification structure is further connected in parallel with a filter capacitor and a load resistor . By using a reconfigurable inverter for the high-frequency inverter on the transmission side and a rectification structure formed by MOSFETs and diodes in series on the reception side, the rectification structure on the reception side can be reconfigured, thereby achieving the effect of bilateral reconfiguration. In combination with the switches in the transmission compensation network and the reception compensation network, multi-mode switching of the wireless charging system is realized, so that one set of wireless charging system can be used to adapt to batteries of various specifications.

[0006] As a preferred technical solution of the present application, the transmission compensation network comprises an inductor , the inductor is connected in series with a compensation capacitor , the inductor is connected in series with a compensation capacitor , the compensation capacitor is connected at a point away from the inductor between a MOSFET and a MOSFET , a switch is located between the compensation capacitor and the point , the compensation capacitor is connected at a point away from the inductor between a MOSFET and a MOSFET , the inductor and the compensation capacitor are connected in parallel, the inductor and the compensation capacitor are connected in parallel, and the inductor and the inductor are connected with a DC input voltage source . By controlling the opening and closing of the switch , the inductor and compensation capacitor , so as to reconstruct the transmitting side circuit.

[0007] As a preferred technical scheme of the present application, the MOS tube series of the rectifying structure is a series of MOS tubes and MOS tubes , and the diode series is a series of diodes and diodes .

[0008] As a preferred technical scheme of the present application, the receiving compensation network comprises an inductor , and the inductor is connected in series with a compensation capacitor , and the inductor is connected in series with a compensation capacitor , and the compensation capacitor is connected at a point away from one end of the inductor between the MOS tube and the MOS tube , and the compensation capacitor is connected at a point away from one end of the inductor between the diode and the diode , and a switch is located between the compensation capacitor and the point . By controlling the on-off of the MOS tube and the MOS tube in combination with the opening and closing of the switch , the receiving side circuit can be reconstructed.

[0009] As a preferred technical scheme of the present application, the capacitance of each compensation capacitor satisfies the following condition:

[0010]

[0011] wherein, is the mutual inductance between the inductor and the inductor , is the mutual inductance between the inductor and the inductor , is the mutual inductance between the inductor and the inductor , is the mutual inductance between the inductor and the inductor , For inductors and inductors Mutual intuition between them ω is the angular frequency.

[0012] As a preferred technical solution of the present invention, in the switch and switch All are disconnected, MOSFETs MOSFET MOSFET and MOSFET All are off, MOSFETs and MOSFET The anti-parallel diodes in the circuit form a half-bridge rectifier, and the MOSFETs... and MOSFET When the inverters operate alternately with a 50% duty cycle, forming a half-bridge inverter, the system's output current... and input impedance It is represented as:

[0013]

[0014] in, In the launch compensation network, Points and Pressure difference between points; In the transmission compensation network, the current flows through the capacitor and inductors The current value. From the above expression, we can see that the output current... With load resistance It is irrelevant; constant current output can be achieved at this time.

[0015] As a preferred technical solution of the present invention, in the switch Close, switch Disconnect, MOSFET MOSFET is turned on. MOSFET and MOSFET All are off, MOSFETs and MOSFET The anti-parallel diodes in the circuit form a half-bridge rectifier, and the MOSFETs... MOSFET When the inverters operate alternately with a 50% duty cycle, forming a half-bridge inverter, the system's first output voltage... and input impedance It is represented as:

[0016]

[0017] in, In the launch compensation network, Points and Pressure difference between points; In the transmission compensation network, the current flows through the capacitor and inductors The current value. From the above expression, it can be seen that the first output voltage... With load resistance It doesn't matter; constant voltage output can be achieved at this time.

[0018] As a preferred technical solution of the present invention, in the switch Disconnect, switch Closed, MOSFET MOSFET is turned on. MOSFET and MOSFET All are off, diodes and diodes Together they form a half-bridge rectifier, MOSFETs MOSFET When the inverters operate alternately with a 50% duty cycle, forming a half-bridge inverter, the system's second output voltage... and input impedance It is represented as:

[0019]

[0020] in, In the launch compensation network, Points and Pressure difference between points; In the transmission compensation network, the current flows through the capacitor and inductors The current value. Second output voltage. With load resistance It doesn't matter; constant voltage output can be achieved at this time.

[0021] Compared with existing technologies, the advantages of this invention are as follows: By setting a reconfigurable inverter on the transmitting side and a switch between the transmitting compensation network and the reconfigurable inverter, and setting a reconfigurable rectifier structure on the receiving side, with a switch between the rectifier structure and the receiving compensation network, dual-side reconfiguration on both the transmitting and receiving sides can be achieved. This allows a single wireless charging system to match various lithium batteries of different specifications. Furthermore, this invention can achieve zero-phase-angle operation, maintaining low system losses. The operating mode is changed quickly and easily through MOSFET switching and relay operation, eliminating reactive power circulation and maintaining high power transmission efficiency. The system has a simple structure, low hardware cost, light weight, small space occupation, and low information processing requirements. Attached Figure Description

[0022] Figure 1 This is a system architecture diagram of the dual-sided reconfigurable multi-mode wireless charging system of the present invention;

[0023] Figure 2 This is the circuit structure diagram of the system in constant current mode according to the present invention;

[0024] Figure 3 This is the equivalent circuit diagram of the system in constant current mode according to the present invention;

[0025] Figure 4 This is the switching timing diagram of the system in constant current mode according to the present invention;

[0026] Figure 5 This is the circuit structure diagram of the system corresponding to the first voltage mode of the present invention;

[0027] Figure 6 This is the equivalent circuit diagram of the system of the present invention in the first voltage mode;

[0028] Figure 7 This is the switching timing diagram of the system in the first voltage mode of the present invention;

[0029] Figure 8 This is a circuit diagram of the system corresponding to the second voltage mode of the present invention;

[0030] Figure 9 This is the equivalent circuit diagram of the system in the second voltage mode of the present invention;

[0031] Figure 10 This is the switching timing diagram of the system in the second voltage mode of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Figure 1 , Figure 2 , Figure 5 , Figure 8 The blue area represents the inverter, and the yellow area represents the rectifier (i.e., the rectification structure).

[0034] Example 1

[0035] like Figure 1The application discloses a kind of multi-mode wireless charging systems based on bilateral reconstruction, the technical scheme adopted is, including transmitting side and receiving side, transmitting side includes DC input voltage source , DC input voltage source is connected reconfigurable inverter, reconfigurable inverter includes MOS tube , MOS tube , MOS tube And MOS tube , MOS tube And MOS tube Series connection, MOS tube And MOS tube Series connection, MOS tube , MOS tube The series line of group and MOS tube , MOS tube Parallel connection.Reconfigurable inverter is connected with transmitting compensation network, transmitting compensation network is connected with inductor as transmitting coil , transmitting compensation network includes inductor , in which inductor Series connection has compensation capacitor , compensation capacitor The end of inductor Away from the connection switch After connecting in MOS tube And the point of MOS tube Between , inductor Series connection has compensation capacitor , compensation capacitor The end of inductor Away from the connection in MOS tube And the point of MOS tube Between , the end of inductor Away from compensation capacitor And the end of inductor Away from compensation capacitor Together in the negative pole of DC input voltage source Connection.Reconfigurable inverter AC output voltage is .

[0036] Receiving side includes receiving compensation network and rectification structure, wherein, rectification structure includes MOS tube , MOS tube , diode And diode , MOS tube And MOS tube Series, diode and diode Series, MOS transistor , MOS transistor Series line of MOS transistor and diode Series line of MOS transistor in parallel; receiving compensation network connected with inductor as receiving coil , receiving compensation network includes inductor , inductor Series compensation capacitor , compensation capacitor away from inductor is connected at the point between MOS transistor and MOS transistor , inductor is connected in series with compensation capacitor , compensation capacitor away from inductor is connected with switch is connected after diode and diode , inductor away from compensation capacitor is connected with inductor away from compensation capacitor is connected at the end of MOS transistor , MOS transistor Series line; AC input voltage of rectifying structure is ; rectifying structure is also connected in parallel with filter capacitor and load resistor away from receiving compensation network, load resistor forms DC output voltage of rectifying structure at load resistor .

[0037] Switch and switch are both relays.

[0038] Capacitance of compensation capacitor , compensation capacitor , compensation capacitor and compensation capacitor satisfies the following conditions:

[0039] (1)

[0040] wherein, is inductor and inductor Mutual intuition between them For inductors and inductors Mutual intuition between them For inductors and inductors Mutual intuition between them For inductors and inductors Mutual intuition between them For inductors and inductors Mutual intuition between them Angular frequency;

[0041] In the formula For inductors The self-perception value, For inductors The self-perception value, For inductors The self-perception value.

[0042] Working principle: such as Figures 2 to 4 As shown, when the switch and switch All are disconnected, MOSFETs MOSFET MOSFET and MOSFET All are off, MOSFETs and MOSFET The anti-parallel diodes in the circuit form a half-bridge rectifier, and the MOSFETs... and MOSFET When operating alternately with a 50% duty cycle to form a half-bridge inverter, the system is reconfigured into an SS two-coil structure.

[0043] according to Figure 3 Based on the equivalent circuit diagram and Kirchhoff's voltage law shown, the voltage relationship of the system can be expressed as:

[0044] (2)

[0045] in, and These represent the current flowing through the inductor. and inductors The current value, and They represent inductors and inductors The equivalent impedance of the circuit. Indicator and inductors The equivalent impedance corresponding to the mutual inductance between them is and The relevant equation can be expressed as:

[0046]

[0047] wherein, is a complex number satisfying .

[0048] In order to realize the constant current characteristic and zero phase angle operation of the wireless charging system, it is necessary to satisfy X2=X3=0. Based on the above condition, substitute into equation (2), we can get and The expression is:

[0049] (4)

[0050] The voltage value of the DC input voltage source is combined with the relationship formula of the root mean square value of the AC output voltage value of the inverter , , The root mean square value relationship formula of the DC output current value of the rectification structure and the battery load relationship expression , substitute equation (4) to get the output current and input impedance of the system:

[0051] (5)

[0052] From equation (5), it can be seen that and are independent, so the system can realize constant current output, and the input impedance is purely resistive, that is, the system can realize zero phase angle operation in constant current mode.

[0053] As shown in Figure 5 , Figure 6 , when the switch is closed, the switch is opened, the MOS tube is turned on, the MOS tube , the MOS tube and the MOS tube are all off, the anti-parallel diode in the MOS tube and the MOS tube together constitute a half-bridge rectifier, and the MOS tube , the MOS tube alternately operate with a duty cycle of 50%, and together constitute a half-bridge inverter. When the system is restructured as an S-S-S three-coil structure. ​

[0054] According to Figure 7 the equivalent circuit diagram and Kirchhoff's voltage law, the voltage relationship of the system can be expressed as:

[0055] (6)

[0056] wherein , and represent the current values flowing through the inductors , and , , and represent the equivalent impedances of the three resonance loops. In addition, , and represent the equivalent impedances of the corresponding mutual inductances, and the relevant equations can be expressed as:

[0057] (7)

[0058] From equation (7), and can be calculated as:

[0059] (8)

[0060] wherein A and B represent as follows:

[0061] (9)

[0062] Combining the relationship formula of the voltage value of the direct current input voltage source and the root mean square value of the alternating current output voltage value of the inverter and the relationship formula of the input voltage value of the rectifier structure and the root mean square value of the direct current output voltage value of the rectifier , substitute equation (9) to obtain:

[0063] (10)

[0064] In addition, from equation (9), the input impedance of the system can be obtained, and the equation is:

[0065] (11)

[0066] As can be seen from equation (10), when A is equal to zero, the numerator and denominator of are approximately equal, at this time, is independent of the time-varying load, that is:

[0067] (12)

[0068] When X1=X2=X3=0, formula (12) is not established, that is, the three resonance loops cannot be in the resonance state at the same time, when the second resonance loop and the third resonance loop are in the resonance state (X2=X3=0) and the first resonance loop is in the non-resonance state (X1=0), the above conditions can be met. At this time, X1 can be calculated as:

[0069] (13)

[0070] Therefore, the resonance condition of the system in the first constant voltage mode is:

[0071] (14)

[0072] Combined with the conditions in formula (13) and formula (14), formula (10) and formula (11) can be further expressed as:

[0073] (15)

[0074] From formula (15), it can be seen that is irrelevant to R B , therefore, the system can realize constant voltage output, and the input impedance is purely resistive, which shows that the system can realize zero phase angle operation in the first constant voltage mode.

[0075] According to the circuit structure diagram and the switch timing diagram shown in Figure 8 and Figure 9 , when the switch is turned off, the switch is turned on, the MOS tube is turned on, the MOS tube , the MOS tube and the MOS tube are all turned off, the diode and the diode jointly constitute a half-bridge rectifier, and the MOS tube , the MOS tube alternately operate with a duty cycle of 50%, jointly constitute a half-bridge inverter, the system is restructured into an S-S-S three-coil structure.

[0076] According to the equivalent circuit diagram and Kirchhoff's voltage law shown in Figure 10 , the loop voltage equation of the equivalent circuit of the system can be written as:

[0077] (16)

[0078] In the formula​ , and These represent the current flowing through the inductor. Inductors and inductors The current value, , and These represent the equivalent impedances of the three resonant circuits, respectively. , and Let represent the equivalent impedances of the corresponding mutual inductances, and the relevant equations can be expressed as:

[0079] (17)

[0080] From equation (17), we can obtain that and It can be calculated as follows:

[0081] (18)

[0082] Where A and B are represented as:

[0083] (19)

[0084] Combined with the voltage value of the DC input voltage source Relationship between the root mean square value of the inverter's AC output voltage and the value of the inverter's AC output voltage and the input voltage value of the rectifier structure With rectifier DC output voltage Root mean square relation Substituting into equation (18), we get:

[0085] (20)

[0086] Furthermore, the system's input impedance equation can be expressed by equation (18) as follows:

[0087] (twenty one)

[0088] From equation (20), it can be seen that when A equals zero, the numerator and denominator... We arranged to meet at this time. It is independent of time-varying loads, that is:

[0089] (twenty two)

[0090] Similar to the derivation process of the first constant voltage mode, when the second and third resonant circuits are in a resonant state (X2=X3=0), while the fourth resonant circuit is in a non-resonant state ( When X4 is in the above condition, the above conditions can be met. In this case, X4 can be calculated as:

[0091] (twenty three)

[0092] Therefore, combining equation (23), equations (20) and (21) can be further expressed as:

[0093] (twenty four)

[0094] From equation (24), we can see that and Regardless of the voltage, it can achieve constant voltage output and the input impedance is purely resistive, which indicates that the system can achieve zero-phase angle operation in the second constant voltage mode.

[0095] Comparative Example 1: Chinese Patent CN114678964A Variable Structure Multi-Winding Wireless Charging System and Method for Achieving Constant Voltage and Constant Current Charging;

[0096] Comparative Example 2: Chinese Patent CN119300198A A dual constant voltage output wireless LED driver without communication based on a reconfigurable rectifier;

[0097] Comparative Example 3: Chinese Patent CN119134685A A constant power output wireless charging system and method with reconfigurable secondary side;

[0098] Comparing Example 1 with Comparative Example 1, Example 1, through simple control of the reconfigurable inverter, reconfigurable rectifier and the working state of two relays, can selectively configure the system into one SS dual-coil structure and two SSS triple-coil structures to charge two different battery specifications. Moreover, the single current mode does not require frequent adjustment of the charging current, avoiding the control complexity and instability caused by real-time detection. In contrast, Comparative Example 1 only achieves charging of a single battery specification, which is limited. Furthermore, if its multiple charging currents are switched, current sudden changes will occur, affecting the battery's lifespan and increasing the risk of system failure.

[0099] Furthermore, the half-bridge structure reconfigured by the reconfigurable rectifiers on the transmitting and receiving sides in Example 1 can optimize efficiency based on its own structural characteristics, thereby further increasing the efficiency of the system throughout the charging process. In the first current mode and the first voltage mode of Comparative Example 1, the half-bridge inverter structure on the transmitting side and the full-bridge rectifier structure on the receiving side will cause the optimal efficiency point of the system to shift, resulting in a decrease in charging efficiency.

[0100] Further, the embodiment 1 adopts a three-coil structure combined with a special parameter design method, so that the system can eliminate the interference of cross coupling without a special magnetic coupler structure, and the system design is simplified. However, the two constant voltage modes in the comparative example 1 both have the influence of cross coupling, so that the system output inevitably deviates from the preset value.

[0101] The comparative example 2 can only configure the system as two S-S-S three-coil structures for LED lighting power supply, while the embodiment 1 can configure the system as one S-S double-coil structure and two S-S-S three-coil structures to realize charging of two different specifications of batteries, and through the reconfigured half-bridge structure of the transmitting side and the receiving side reconfigurable rectifier, the efficiency optimization can be realized according to the structure characteristics, so that the efficiency of the system is further improved in the whole charging process. The embodiment 1 can realize switching from one constant current mode to two constant voltage modes, while the comparative example 2 can only realize switching of two constant voltage modes.

[0102] The comparative example 3 selectively configures the circuit as an S-S double-coil structure and an S-LCC double-coil structure by controlling the working state of the alternating current switch S, realizes one constant current output and one constant voltage output, and can only charge one specification of battery, and since it only has a double-coil structure, it cannot realize selective configuration.

[0103] Therefore, the embodiment 1 has stronger versatility, functionality and practicability compared with the comparative example 1, and can realize switching from one constant current mode to two constant voltage modes and selective configuration compared with the comparative examples 2 and 3.

[0104] The circuit connection involved in the present application is a common means adopted by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, and belongs to the public knowledge.

[0105] The components not described in detail in the present application are prior art.

[0106] Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-mode wireless charging system based on dual-side reconfiguration, comprising a transmitting side and a receiving side, wherein the transmitting side and the receiving side are mutually inducted, and the transmitting side has DC input voltage sources connected in sequence. The high-frequency inverter includes a high-frequency inverter and a transmit compensation network. The receive side includes a receive compensation network and a rectifier structure. The high-frequency inverter includes MOSFETs. MOSFET MOSFET and MOSFET MOSFET and MOSFET Series connection, MOSFET and MOSFET Series connection, MOSFET MOSFET and MOSFET MOSFET Parallel connection, characterized by: The high-frequency inverter is a reconfigurable inverter, and there is a switch between the transmitter compensation network and the high-frequency inverter. The transmit compensation network is connected to an inductor that serves as the transmit coil. There is a switch between the receiver compensation network and the rectifier structure on the receiving side. The receiving compensation network is connected to an inductor that acts as a receiving coil. The rectifier structure consists of a series connection of MOSFETs and a series connection of diodes in parallel. A filter capacitor is also connected in parallel with the rectifier structure. and load resistance .

2. The multi-mode wireless charging system based on dual-sided reconfiguration according to claim 1, characterized in that: The transmission compensation network includes inductors. Inductor A compensation capacitor is connected in series. Inductor A compensation capacitor is connected in series. Compensation capacitor Keep away from inductors One end is connected to the MOSFET and MOSFET Between At the point of contact, the switch Located in the compensation capacitor and Between points; compensation capacitor Keep away from inductors One end is connected to the MOSFET and MOSFET of Point location; inductor Compensation capacitors With inductors Compensation capacitors Parallel connection; inductor and inductors Both are related to DC input voltage sources Connected.

3. The multi-mode wireless charging system based on dual-sided reconfiguration according to claim 2, characterized in that: The rectifier structure consists of a series group of MOS transistors connected in series. and MOSFET A diode series group consists of diodes connected in series. and diodes .

4. The multi-mode wireless charging system based on dual-sided reconfiguration according to claim 3, characterized in that: The receiving compensation network includes an inductor. Inductor A compensation capacitor is connected in series. Inductor A compensation capacitor is connected in series. Compensation capacitor Keep away from inductors One end is connected to the MOSFET and MOSFET Between Point location; compensation capacitor Keep away from inductors One end is connected to the diode and diodes Between Point location; switch Located in the compensation capacitor and Between points.

5. The multi-mode wireless charging system based on dual-sided reconfiguration according to claim 4, characterized in that: The capacitance values ​​of each compensation capacitor must meet the following conditions: ； in, For inductors and inductors Mutual intuition between them For inductors and inductors Mutual intuition between them For inductors and inductors Mutual intuition between them For inductors and inductors Mutual intuition between them For inductors and inductors Mutual intuition between them ω is the angular frequency.

6. The multi-mode wireless charging system based on dual-sided reconfiguration according to claim 5, characterized in that: In the switch and switch All are disconnected, MOSFETs MOSFET MOSFET and MOSFET All are off, MOSFETs and MOSFET The anti-parallel diodes in the circuit form a half-bridge rectifier, and the MOSFETs... and MOSFET When the inverters operate alternately with a 50% duty cycle, forming a half-bridge inverter, the system's output current... and input impedance It is represented as: ； in, The AC output voltage of the reconfigurable inverter; In the transmission compensation network, the current flows through the capacitor and inductors The current value.

7. The multi-mode wireless charging system based on dual-sided reconfiguration according to claim 5, characterized in that: In the switch Close, switch Disconnect, MOSFET MOSFET is turned on. MOSFET and MOSFET All are off, MOSFETs and MOSFET The anti-parallel diodes in the circuit form a half-bridge rectifier, and the MOSFETs... MOSFET When the inverters operate alternately with a 50% duty cycle, forming a half-bridge inverter, the system's first output voltage... and input impedance It is represented as: ； in, The AC output voltage of the reconfigurable inverter; In the transmission compensation network, the current flows through the capacitor and inductors The current value.

8. The multi-mode wireless charging system based on dual-sided reconfiguration according to claim 5, characterized in that: In the switch Disconnect, switch Closed, MOSFET MOSFET is turned on. MOSFET and MOSFET All are off, diodes and diodes Together they form a half-bridge rectifier, MOSFETs MOSFET When the inverters operate alternately with a 50% duty cycle, forming a half-bridge inverter, the system's second output voltage... and input impedance It is represented as: ； in, The AC output voltage of the reconfigurable inverter; In the transmission compensation network, the current flows through the capacitor and inductors The current value.

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