Wireless power receiving circuit, wireless charging system, electronic device, and charging method

Abstract

According to the wireless power receiving circuit, the wireless charging system, the electronic equipment and the charging method provided by the invention, the first bridge arm, the second bridge arm and the connection relationship between the two bridge arms and the DCDC converter are set, so that the two bridge arms and the DCDC converter are not in a cascade relationship, and the two bridge arms and the DCDC converter are matched for use when an alternating current signal is processed, so that the reliability of the wireless power receiving circuit is improved. The two bridge arms and the DCDC converter are mutually influenced instead of being independent of each other, so that the wireless power receiving circuit comprising the two bridge arms and the DCDC converter belongs to a single-stage circuit scheme, loss generated when a battery is charged is single-stage loss, and compared with multi-stage loss in a multi-stage circuit cascading scheme, the energy loss during charging can be effectively reduced; the charging efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of electronic technologies, and in particular, to a wireless power receiving circuit, a wireless charging system, an electronic device, and a charging method. Background Art

[0002] With the continuous increase in the charging power of electronic products, the board area occupied by wired and wireless charging solutions is getting larger and larger. Due to the limited space of the product board, the device layout is becoming tense. In high-power wireless charging scenarios, since a multi-stage circuit cascading scheme is adopted and each stage of the circuit operates completely independently, it is necessary to add high-voltage large capacitors at the output ends of both the rectifier bridge and the linear voltage regulator for filtering, resulting in a bloated area of the entire wireless charging solution, low wireless charging efficiency, large losses, and affecting the fast charging speed and user experience. Therefore, how to improve the charging efficiency has become an urgent problem to be solved. Summary of the Invention

[0003] This application provides a wireless power receiving circuit, a wireless charging system, an electronic device, and a charging method for improving the charging efficiency.

[0004] In a first aspect, an embodiment of this application provides a wireless power receiving circuit, which may include: a power receiver, a first bridge arm, a second bridge arm, a DCDC (Direct Current Direct Current) converter, and a controller; the DCDC converter includes a first processing unit and a second processing unit; the power receiver is connected to the midpoint of the bridge arm of the first bridge arm, and the power receiver is also connected to the midpoint of the bridge arm of the second bridge arm. The power receiver is configured to: in response to wireless power transmission, output an alternating current signal to the midpoints of the bridge arms of the first bridge arm and the second bridge arm; the first bridge arm is further connected to the first processing unit, the ground terminal, and the controller respectively, and the second bridge arm is further connected to the second processing unit, the ground terminal, and the controller respectively. The controller is configured to: in response to the positive half-cycle signal of the alternating current signal, control the first bridge arm and the second bridge arm to output the positive half-cycle signal to the first processing unit; in response to the negative half-cycle signal of the alternating current signal, control the first bridge arm and the second bridge arm to output the positive signal corresponding to the negative half-cycle signal to the second processing unit; the output end of the first processing unit is used to be connected to the battery, and the first processing unit is configured to: charge the battery in response to the positive half-cycle signal; the output end of the second processing unit is used to be connected to the battery, and the second processing unit is configured to: charge the battery in response to the positive signal.

[0005] Thus, the first processing unit can charge the battery based on the positive half-cycle signal under the action of the two bridge arms, and the second processing unit can also charge the battery based on the positive signal corresponding to the negative half-cycle signal under the action of the two bridge arms. Therefore, through the coordinated operation of the first processing unit, the second processing unit and the two bridge arms, the battery can be charged based on the AC signal, enabling the overall combination of the DCDC converter and the two bridge arms to function as an AC-DC converter. Moreover, the DCDC converter and the two bridge arms cooperate with each other during operation and are not independent of each other. Thus, the wireless power receiving circuit provided by the embodiments of the present application belongs to a single-stage circuit solution, and consequently, the losses during battery charging are single-stage losses. Compared with the multi-stage losses in the multi-stage circuit cascading solution, the energy losses during charging can be effectively reduced, and the charging efficiency of the battery can be improved.

[0006] Optionally, the DCDC converter may further include a first switch unit and a second switch unit. The DCDC converter further includes a wired power input terminal. The first switch unit is respectively connected to the first processing unit, the wired power input terminal, and the controller, and the second switch unit is respectively connected to the second processing unit, the wired power input terminal, and the controller. The controller is further configured to: in response to the AC signal, control the first switch unit to disconnect the wired power input terminal from the first processing unit, and control the second switch unit to disconnect the wired power input terminal from the second processing unit. The first bridge arm is further connected to the first switch unit, and the second bridge arm is further connected to the second switch unit. Thus, the first switch unit and the second switch unit can control whether the electric energy input from the wired power input terminal is transmitted to the first processing unit and the second processing unit. Furthermore, when charging the battery wirelessly, the first switch unit and the second switch unit can be controlled to be both disconnected, avoiding interference to the wireless charging caused by the electric energy input from the wired power input terminal, thereby improving the reliability and safety of the wireless charging.

[0007] Optionally, the first bridge arm includes: a first bridge arm switch and a second bridge arm switch. The control electrode of the first bridge arm switch is connected to the controller. The first pole of the first bridge arm switch is respectively connected to the positive electrode of the power receiver and the second pole of the second bridge arm switch. The second pole of the first bridge arm switch is connected to the first processing unit. The control electrode of the second bridge arm switch is connected to the controller. The first pole of the second bridge arm switch is connected to the ground terminal. The second pole of the second bridge arm switch is further connected to the positive electrode of the power receiver. The second bridge arm includes: a third bridge arm switch and a fourth bridge arm switch. The control electrode of the third bridge arm switch is connected to the controller. The first pole of the third bridge arm switch is respectively connected to the negative electrode of the power receiver and the second pole of the fourth bridge arm switch. The second pole of the third bridge arm switch is connected to the second processing unit. The control electrode of the fourth bridge arm switch is connected to the controller. The first pole of the fourth bridge arm switch is connected to the ground terminal. The second pole of the fourth bridge arm switch is further connected to the negative electrode of the power receiver. The controller is configured to: in response to a positive half-cycle signal, control the first bridge arm and the second bridge arm to switch between a first mode and a second mode; in response to a positive signal, control the first bridge arm and the second bridge arm to switch between the first mode and a third mode. Wherein, the first mode includes a mode in which both the second bridge arm switch and the fourth bridge arm switch are turned on. The second mode includes a mode in which both the first bridge arm switch and the fourth bridge arm switch are turned on. The third mode includes a mode in which both the second bridge arm switch and the third bridge arm switch are turned on. In this way, by the conduction states of the respective bridge arm switches, the first bridge arm and the second bridge arm can be controlled to switch between different modes, so that the positive half-cycle signal and the positive signal corresponding to the negative half-cycle signal in the AC signal are respectively transmitted to the first processing unit and the second processing unit, so as to facilitate the first processing unit and the second processing unit to process the received signals to charge the battery, thereby realizing the cooperative work of each bridge arm and each processing unit and improving the charging efficiency of the battery.

[0008] Optionally, the setting manners of the first processing unit and the second processing unit may include the following situations:

[0009] Case 1: The first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor, and the second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is connected to the ground terminal, and the second terminal of the second switch is also connected to the first terminal of the first capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the second terminal of the seventh switch and the first terminal of the third capacitor, and the second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first leg; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is respectively connected to the second terminal of the fifth switch, the battery, the first terminal of the seventh switch, and the second terminal of the eighth switch, and the second terminal of the fourth switch is also connected to the first terminal of the second capacitor; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the second terminal of the second capacitor, and the second terminal of the fifth switch is also connected to the battery; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is connected to the ground terminal, and the second terminal of the sixth switch is also connected to the second terminal of the second capacitor; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the battery, and the second terminal of the seventh switch is also connected to the first terminal of the third capacitor; the control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is respectively connected to the second terminal of the third capacitor and the second terminal of the ninth switch, and the second terminal of the eighth switch is also connected to the battery; the control terminal of the ninth switch is connected to the controller, the first terminal of the ninth switch is connected to the ground terminal, and the second terminal of the ninth switch is also connected to the second terminal of the third capacitor.

[0010] At this time, the controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch among the first state, the second state, and the third state; wherein, the first state includes: the state where the second switch, the third switch, the fourth switch, the sixth switch, and the eighth switch are all turned on, and the other switches in the first processing unit are all turned off; the second state includes: the state where the first switch, the fourth switch, the sixth switch, the seventh switch, and the ninth switch are all turned on, and the other switches in the first processing unit are all turned off; the third state includes: the state where the first switch, the fifth switch, the seventh switch, and the ninth switch are all turned on, and the other switches in the first processing unit are all turned off; the first mode includes the first state, and the second mode includes: the first state, the second state, and the third state. In this way, by switching the first processing unit among different states, the battery can be charged based on the positive half-cycle signal.

[0011] The second processing unit may include: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; wherein, the control end of the tenth switch is connected to the controller, the first end of the tenth switch is respectively connected to the second end of the eleventh switch and the first end of the fourth capacitor, and the second end of the tenth switch is respectively connected to the second end of the thirteenth switch and the first end of the fifth capacitor; the control end of the eleventh switch is connected to the controller, the first end of the eleventh switch is connected to the ground end, and the second end of the eleventh switch is further connected to the first end of the fourth capacitor; the control end of the twelfth switch is connected to the controller, the first end of the twelfth switch is respectively connected to the second end of the sixteenth switch and the first end of the sixth capacitor, and the second end of the twelfth switch is respectively connected to the second end of the fourth capacitor and the second bridge arm; the control end of the thirteenth switch is connected to the controller, the first end of the thirteenth switch is respectively connected to the second end of the fourteenth switch, the battery, the first end of the sixteenth switch, and the second end of the seventeenth switch, and the second end of the thirteenth switch is further connected to the first end of the fifth capacitor; the control end of the fourteenth switch is connected to the controller, the first end of the fourteenth switch is respectively connected to the second end of the fifteenth switch and the second end of the fifth capacitor, and the second end of the fourteenth switch is further connected to the battery; the control end of the fifteenth switch is connected to the controller, the first end of the fifteenth switch is connected to the ground end, and the second end of the fifteenth switch is further connected to the second end of the fifth capacitor; the control end of the sixteenth switch is connected to the controller, the first end of the sixteenth switch is further connected to the battery, and the second end of the sixteenth switch is further connected to the first end of the sixth capacitor; the control end of the seventeenth switch is connected to the controller, the first end of the seventeenth switch is respectively connected to the second end of the sixth capacitor and the second end of the eighteenth switch, and the second end of the seventeenth switch is further connected to the battery; the control end of the eighteenth switch is connected to the controller, the first end of the eighteenth switch is connected to the ground end, and the second end of the eighteenth switch is further connected to the second end of the sixth capacitor. In other words, the structure of the second processing unit is basically similar to that of the first processing unit, which can simplify the structural complexity of the DCDC converter, reduce the manufacturing difficulty of the wireless power receiving circuit, and reduce the manufacturing cost.

[0012] At this time, the controller is further configured to: in response to a positive signal, control the second processing unit to switch among a fourth state, a fifth state, and a sixth state; wherein, the fourth state includes a state in which the eleventh switch, the twelfth switch, the thirteenth switch, the fifteenth switch, and the seventeenth switch are all turned on, and other switches in the second processing unit are all turned off; the fifth state includes a state in which the tenth switch, the thirteenth switch, the fifteenth switch, the sixteenth switch, and the eighteenth switch are all turned on, and other switches in the second processing unit are all turned off; the sixth state includes a state in which the tenth switch, the fourteenth switch, the sixteenth switch, and the eighteenth switch are all turned on, and other switches in the second processing unit are all turned off; the first mode includes the fourth state, and the third mode includes the fourth state, the fifth state, and the sixth state. Thus, by switching the second processing unit among different states, the battery can be charged based on the positive signal.

[0013] Case 2: The first processing unit may include: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor, and a third capacitor; wherein, the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the third capacitor, and the second terminal of the first switch is respectively connected to the first arm and the first terminal of the first capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is respectively connected to the first terminal of the second capacitor and the second terminal of the third switch, and the second terminal of the second switch is further connected to the first terminal of the third capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the second terminal of the fourth switch, the second terminal of the sixth switch, and the battery, and the second terminal of the third switch is further connected to the first terminal of the second capacitor; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is respectively connected to the second terminal of the fifth switch, the second terminal of the first capacitor, and the second terminal of the second capacitor, and the second terminal of the fourth switch is further connected to the battery; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is connected to the ground terminal, and the second terminal of the fifth switch is further respectively connected to the second terminal of the first capacitor and the second terminal of the second capacitor; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is respectively connected to the second terminal of the seventh switch and the second terminal of the third capacitor, and the second terminal of the sixth switch is further connected to the battery; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is connected to the ground terminal, and the second terminal of the seventh switch is further connected to the second terminal of the third capacitor.

[0014] At this time, the controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch between a first state and a second state; wherein, the first state includes: a state in which the first switch, the third switch, the fifth switch, and the sixth switch are all turned on, and all other switches in the first processing unit are turned off; the second state includes: a state in which the second switch, the fourth switch, and the seventh switch are all turned on, and all other switches in the first processing unit are turned off; the first mode includes the first state, and the second mode includes: the first state and the second state. In this way, by switching the first processing unit between different states, the battery can be charged based on the positive half-cycle signal.

[0015] The second processing unit may include: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; wherein, the control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is respectively connected to the second terminal of the ninth switch and the first terminal of the sixth capacitor, and the second terminal of the eighth switch is respectively connected to the second bridge arm and the first terminal of the fourth capacitor; the control terminal of the ninth switch is connected to the controller, the first terminal of the ninth switch is respectively connected to the first terminal of the fifth capacitor and the second terminal of the tenth switch, and the second terminal of the ninth switch is further connected to the first terminal of the sixth capacitor; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is respectively connected to the second terminal of the eleventh switch, the second terminal of the thirteenth switch, and the battery, and the second terminal of the tenth switch is further connected to the first terminal of the fifth capacitor; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is respectively connected to the second terminal of the twelfth switch, the second terminal of the fourth capacitor, and the second terminal of the fifth capacitor, and the second terminal of the eleventh switch is further connected to the battery; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is connected to the ground terminal, and the second terminal of the twelfth switch is further respectively connected to the second terminal of the fourth capacitor and the second terminal of the fifth capacitor; the control terminal of the thirteenth switch is connected to the controller, the first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch and the second terminal of the sixth capacitor, and the second terminal of the thirteenth switch is further connected to the battery; the control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is connected to the ground terminal, and the second terminal of the fourteenth switch is further connected to the second terminal of the sixth capacitor.

[0016] At this time, the controller is further configured to: in response to the positive signal, control the second processing unit to switch between a third state and a fourth state; wherein, the third state includes: a state in which the eighth switch, the tenth switch, the twelfth switch, and the thirteenth switch are all turned on, and all other switches in the second processing unit are turned off; the fourth state includes: a state in which the ninth switch, the eleventh switch, and the fourteenth switch are all turned on, and all other switches in the second processing unit are turned off; the first mode includes the third state, and the third mode includes: the third state and the fourth state. In this way, by switching the second processing unit between different states, the battery can be charged based on the positive signal.

[0017] Case 3: The first processing unit may include: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor, and a third capacitor; wherein, the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor, and the second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is connected to the ground terminal, and the second terminal of the second switch is also respectively connected to the first terminal of the first capacitor and the second terminal of the second capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the first terminal of the fourth switch, the second terminal of the fifth switch, and the first terminal of the third capacitor, and the second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first bridge arm; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is also connected to the first terminal of the third capacitor, and the second terminal of the fourth switch is also connected to the first terminal of the second capacitor; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the battery, and the second terminal of the fifth switch is also connected to the first terminal of the third capacitor; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is respectively connected to the second terminal of the seventh switch and the second terminal of the third capacitor, and the second terminal of the sixth switch is also connected to the battery; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the ground terminal, and the second terminal of the seventh switch is also connected to the second terminal of the third capacitor.

[0018] At this time, the controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch between a first state and a second state; wherein, the first state includes a state in which the second switch, the third switch, the fourth switch, and the sixth switch are all turned on and other switches in the first processing unit are all turned off; the second state includes a state in which the first switch, the fifth switch, and the seventh switch are all turned on and other switches in the first processing unit are all turned off; the first mode includes the first state, and the second mode includes the first state and the second state. In this way, by switching the first processing unit between different states, the battery can be charged based on the positive half-cycle signal.

[0019] The second processing unit may include: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; wherein, the control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is respectively connected to the second terminal of the ninth switch and the first terminal of the fourth capacitor, and the second terminal of the eighth switch is respectively connected to the second terminal of the eleventh switch and the first terminal of the fifth capacitor; the control terminal of the ninth switch is connected to the controller, the first terminal of the ninth switch is connected to the ground terminal, and the second terminal of the ninth switch is also respectively connected to the first terminal of the fourth capacitor and the second terminal of the fifth capacitor; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is respectively connected to the first terminal of the eleventh switch, the second terminal of the twelfth switch, and the first terminal of the sixth capacitor, and the second terminal of the tenth switch is respectively connected to the second terminal of the fourth capacitor and the second bridge arm; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is also connected to the first terminal of the sixth capacitor, and the second terminal of the eleventh switch is also connected to the first terminal of the fifth capacitor; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is respectively connected to the second terminal of the thirteenth switch and the battery, and the second terminal of the twelfth switch is also connected to the first terminal of the sixth capacitor; the control terminal of the thirteenth switch is connected to the controller, the first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch and the second terminal of the sixth capacitor, and the second terminal of the thirteenth switch is also connected to the battery; the control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is also connected to the ground terminal, and the second terminal of the fourteenth switch is also connected to the second terminal of the sixth capacitor.

[0020] At this time, the controller is further configured to: in response to a positive signal, control the second processing unit to switch between a third state and a fourth state; wherein, the third state includes a state in which the ninth switch, the tenth switch, the eleventh switch, and the thirteenth switch are all turned on and other switches in the second processing unit are all turned off; the fourth state includes a state in which the eighth switch, the twelfth switch, and the fourteenth switch are all turned on and other switches in the second processing unit are all turned off; the first mode includes the third state, and the third mode includes the third state and the fourth state. Thus, by switching the second processing unit between different states, the battery can be charged based on the positive signal.

[0021] Case 4: The first processing unit may include: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; wherein, the control end of the first switch is connected to the controller, the first end of the first switch is respectively connected to the first end of the first capacitor and the first bridge arm, and the second end of the first switch is respectively connected to the second end of the fourth switch, the second end of the seventh switch, the second end of the ninth switch, and the battery; the control end of the second switch is connected to the controller, the first end of the second switch is connected to the ground end, and the second end of the second switch is respectively connected to the second end of the first capacitor and the second end of the third switch; the control end of the third switch is connected to the controller, the first end of the third switch is respectively connected to the first end of the fourth switch and the first end of the second capacitor, and the second end of the third switch is further connected to the second end of the first capacitor; the control end of the fourth switch is connected to the controller, the first end of the fourth switch is further connected to the first end of the second capacitor, and the second end of the fourth switch is further connected to the battery; the control end of the fifth switch is connected to the controller, the first end of the fifth switch is connected to the ground end, and the second end of the fifth switch is respectively connected to the second end of the second capacitor and the second end of the sixth switch; the control end of the sixth switch is connected to the controller, the first end of the sixth switch is respectively connected to the first end of the third capacitor and the first end of the seventh switch, and the second end of the sixth switch is further connected to the second end of the second capacitor; the control end of the seventh switch is connected to the controller, the first end of the seventh switch is further connected to the first end of the third capacitor, and the second end of the seventh switch is further connected to the battery; the control end of the eighth switch is connected to the controller, the first end of the eighth switch is connected to the ground end, and the second end of the eighth switch is respectively connected to the second end of the third capacitor and the first end of the ninth switch; the control end of the ninth switch is connected to the controller, the first end of the ninth switch is further connected to the second end of the third capacitor, and the second end of the ninth switch is further connected to the battery.

[0022] At this time, the controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch between a first state, a second state, a third state, and a fourth state; wherein, the first state includes a state in which the first switch, the second switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on, and the other switches in the first processing unit are all turned off; the second state includes a state in which the third switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on, and the other switches in the first processing unit are all turned off; the third state includes a state in which the third switch, the sixth switch, the seventh switch, and the eighth switch are all turned on, and the other switches in the first processing unit are all turned off; the fourth state includes a state in which the third switch, the sixth switch, and the ninth switch are all turned on, and the other switches in the first processing unit are all turned off. The first mode includes the first state, and the second mode includes: the first state, the second state, the third state, and the fourth state. In this way, by switching the first processing unit among different states, the battery can be charged based on the positive half-cycle signal.

[0023] The second processing unit may include: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; wherein, the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is respectively connected to the first terminal of the fourth capacitor and the second bridge arm, and the second terminal of the tenth switch is respectively connected to the second terminal of the thirteenth switch, the second terminal of the sixteenth switch, the second terminal of the eighteenth switch, and the battery; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is connected to the ground terminal, and the second terminal of the eleventh switch is respectively connected to the second terminal of the fourth capacitor and the second terminal of the twelfth switch; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is respectively connected to the first terminal of the thirteenth switch and the first terminal of the fifth capacitor, and the second terminal of the twelfth switch is further connected to the second terminal of the fourth capacitor; the control terminal of the thirteenth switch is connected to the controller, the first terminal of the thirteenth switch is further connected to the first terminal of the fifth capacitor, and the second terminal of the thirteenth switch is further connected to the battery; the control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is connected to the ground terminal, and the second terminal of the fourteenth switch is respectively connected to the second terminal of the fifth capacitor and the second terminal of the fifteenth switch; the control terminal of the fifteenth switch is connected to the controller, the first terminal of the fifteenth switch is respectively connected to the first terminal of the sixth capacitor and the first terminal of the sixteenth switch, and the second terminal of the fifteenth switch is further connected to the second terminal of the fifth capacitor; the control terminal of the sixteenth switch is connected to the controller, the first terminal of the sixteenth switch is further connected to the first terminal of the sixth capacitor, and the second terminal of the sixteenth switch is further connected to the battery; the control terminal of the seventeenth switch is connected to the controller, the first terminal of the seventeenth switch is connected to the ground terminal, and the second terminal of the seventeenth switch is respectively connected to the second terminal of the sixth capacitor and the first terminal of the eighteenth switch; the control terminal of the eighteenth switch is connected to the controller, the first terminal of the eighteenth switch is further connected to the second terminal of the sixth capacitor, and the second terminal of the eighteenth switch is further connected to the battery.

[0024] At this time, the controller is further configured to: in response to a positive signal, control the second processing unit to switch among a fifth state, a sixth state, a seventh state, and an eighth state; wherein, the fifth state includes a state in which the tenth switch, the eleventh switch, the thirteenth switch, the fourteenth switch, the sixteenth switch, and the seventeenth switch are all turned on, and other switches in the second processing unit are all turned off; the sixth state includes a state in which the twelfth switch, the thirteenth switch, the fourteenth switch, the sixteenth switch, and the seventeenth switch are all turned on, and other switches in the second processing unit are all turned off; the seventh state includes a state in which the twelfth switch, the fifteenth switch, the sixteenth switch, and the seventeenth switch are all turned on, and other switches in the second processing unit are all turned off; the eighth state includes a state in which the twelfth switch, the fifteenth switch, and the eighteenth switch are all turned on, and other switches in the second processing unit are all turned off. The first mode includes the fifth state, and the third mode includes the fifth state, the sixth state, the seventh state, and the eighth state. Thus, by switching the second processing unit among different states, the battery can be charged based on the positive signal.

[0025] Case 5: The first processing unit may include: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a first capacitor, and a second capacitor; wherein, the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor, and the second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is connected to the ground terminal, and the second terminal of the second switch is further connected to the first terminal of the first capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the first terminal of the fourth switch, the second terminal of the fifth switch, and the battery, and the second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first bridge arm; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is further connected to the battery, and the second terminal of the fourth switch is further connected to the first terminal of the second capacitor; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the second terminal of the second capacitor, and the second terminal of the fifth switch is further connected to the battery; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is connected to the ground terminal, and the second terminal of the sixth switch is further connected to the second terminal of the second capacitor.

[0026] At this time, the controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch among a first state, a second state, and a third state; wherein, the first state includes a state in which the second switch, the third switch, the fourth switch, and the sixth switch are all turned on, and the other switches in the first processing unit are all turned off; the second state includes a state in which the first switch, the fourth switch, and the sixth switch are all turned on, and the other switches in the first processing unit are all turned off; the third state includes a state in which the first switch and the fifth switch are all turned on, and the other switches in the first processing unit are all turned off. The first mode includes the first state, and the second mode includes the first state, the second state, and the third state. In this way, by switching the first processing unit among different states, the battery can be charged based on the positive half-cycle signal.

[0027] The second processing unit may include: a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor; wherein, the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is respectively connected to the second terminal of the eighth switch and the first terminal of the third capacitor, and the second terminal of the seventh switch is respectively connected to the second terminal of the tenth switch and the first terminal of the fourth capacitor; the control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is connected to the ground terminal, and the second terminal of the eighth switch is further connected to the first terminal of the third capacitor; the control terminal of the ninth switch is connected to the controller, the first terminal of the ninth switch is respectively connected to the first terminal of the tenth switch, the second terminal of the eleventh switch, and the battery, and the second terminal of the ninth switch is respectively connected to the second terminal of the third capacitor and the second bridge arm; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is further connected to the battery, and the second terminal of the tenth switch is further connected to the first terminal of the fourth capacitor; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is respectively connected to the second terminal of the twelfth switch and the second terminal of the fourth capacitor, and the second terminal of the eleventh switch is further connected to the battery; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is connected to the ground terminal, and the second terminal of the twelfth switch is further connected to the second terminal of the fourth capacitor.

[0028] At this time, the controller is further configured to: in response to the positive signal, control the second processing unit to switch among a fourth state, a fifth state, and a sixth state; wherein, the fourth state includes a state in which the eighth switch, the ninth switch, the tenth switch, and the twelfth switch are all turned on, and the other switches in the second processing unit are all turned off; the fifth state includes a state in which the seventh switch, the tenth switch, and the twelfth switch are all turned on, and the other switches in the second processing unit are all turned off; the sixth state includes a state in which the seventh switch and the eleventh switch are all turned on, and the other switches in the second processing unit are all turned off. The first mode includes the fourth state, and the third mode includes the fourth state, the fifth state, and the sixth state. In this way, by switching the second processing unit among different states, the battery can be charged based on the positive signal.

[0029] It should be understood that in the present application, each switch and each leg switch can be, but are not limited to, switching devices with control terminals such as field effect transistors and triodes, and can be specifically designed according to actual needs, and no specific limitation is made here. Among them, taking the switch and the leg switch as field effect transistors as an example, the control electrode serves as the gate, the first electrode serves as the source, and the second electrode serves as the drain.

[0030] In a second aspect, an embodiment of the present application further provides a wireless charging system, which may include: a charging device and at least one power receiving device. The power receiving device includes: a battery and a wireless power receiving circuit as described in the first aspect and any one of the embodiments in the first aspect. The charging device is configured to: provide electromagnetic waves to the wireless power receiving circuit; and the wireless power receiving circuit is configured to: charge the battery in response to the electromagnetic waves, thereby improving the charging efficiency of the wireless charging system for the battery.

[0031] It should be understood that since the principle of solving problems of this wireless charging system is similar to that of the aforementioned wireless power receiving circuit, the implementation and technical effects of this wireless charging system can refer to the implementation and technical effects of the aforementioned wireless power receiving circuit, and the repeated parts will not be described again.

[0032] In a third aspect, an embodiment of the present application further provides an electronic device, which may include: a wireless power receiving circuit as described in the first aspect and any one of the embodiments in the first aspect, and a battery. The wireless power receiving circuit is connected to the battery, thereby improving the charging efficiency of the electronic device.

[0033] It should be understood that since the principle of solving problems of this electronic device is similar to that of the aforementioned wireless power receiving circuit, the implementation and technical effects of this electronic device can refer to the implementation and technical effects of the aforementioned wireless power receiving circuit, and the repeated parts will not be described again.

[0034] Fourthly, an embodiment of the present application further provides a charging method, which is used to charge by using the wireless power receiving circuit described in any embodiment of the first aspect above. The charging method may include: the power receiver outputs an AC signal to the midpoint of each bridge arm among a plurality of bridge arms in response to wireless power transmission; the controller controls the plurality of bridge arms to output the positive half-cycle signal to the first processing unit in response to the positive half-cycle signal of the AC signal, so that the first processing unit charges the battery according to the positive half-cycle signal; the controller controls the plurality of bridge arms to output the positive signal corresponding to the negative half-cycle signal to the second processing unit in response to the negative half-cycle signal of the AC signal, so that the second processing unit charges the battery according to the positive signal. In this way, the first processing unit can charge the battery based on the positive half-cycle signal under the action of the plurality of bridge arms, and the second processing unit can also charge the battery based on the positive signal corresponding to the negative half-cycle signal under the action of the plurality of bridge arms. Therefore, through the cooperation of the first processing unit, the second processing unit and the plurality of bridge arms, the battery can be charged based on the AC signal, so that the overall composed of the DCDC converter and the plurality of bridge arms can play the role of AC-DC conversion, and the DCDC converter and the plurality of bridge arms cooperate with each other during operation and are not independent of each other. Thus, the wireless power receiving circuit provided by the embodiment of the present application belongs to a single-stage circuit solution, and further, the loss during battery charging belongs to single-stage loss. Compared with the multi-stage loss in the multi-stage circuit cascade solution, the energy loss during charging can be effectively reduced, and the charging efficiency of the battery can be improved.

[0035] Optionally, in response to the positive half-cycle signal of the alternating current signal, controlling multiple bridge arms to output the positive half-cycle signal to the first processing unit, including: in response to the positive half-cycle signal, controlling the multiple bridge arms to switch between a first mode and a second mode; in response to the negative half-cycle signal of the alternating current signal, controlling the multiple bridge arms to output the positive signal corresponding to the negative half-cycle signal to the second processing unit, including: in response to the positive signal, controlling the multiple bridge arms to switch between the first mode and a third mode; wherein, the multiple bridge arms include a first bridge arm and a second bridge arm, the first bridge arm includes: a first bridge arm switch and a second bridge arm switch, the control end of the first bridge arm switch is connected to the controller, the first end of the first bridge arm switch is respectively connected to the positive pole of the power receiver and the second end of the second bridge arm switch, the second end of the first bridge arm switch is connected to the first processing unit; the control end of the second bridge arm switch is connected to the controller, the first end of the second bridge arm switch is connected to the ground terminal, and the second end of the second bridge arm switch is further connected to the positive pole of the power receiver; the second bridge arm includes: a third bridge arm switch and a fourth bridge arm switch, the control end of the third bridge arm switch is connected to the controller, the first end of the third bridge arm switch is respectively connected to the negative pole of the power receiver and the second end of the fourth bridge arm switch, the second end of the third bridge arm switch is connected to the second processing unit; the control end of the fourth bridge arm switch is connected to the controller, the first end of the fourth bridge arm switch is connected to the ground terminal, and the second end of the fourth bridge arm switch is further connected to the negative pole of the power receiver; the first mode includes: a mode in which both the second bridge arm switch and the fourth bridge arm switch are turned on, the second mode includes: a mode in which both the first bridge arm switch and the fourth bridge arm switch are turned on, and the third mode includes: a mode in which both the second bridge arm switch and the third bridge arm switch are turned on. In this way, by the on-state of each bridge arm switch, the multiple bridge arms can be controlled to switch between different modes, so as to transmit the positive half-cycle signal in the alternating current signal and the positive signal corresponding to the negative half-cycle signal to the first processing unit and the second processing unit respectively, so that the first processing unit and the second processing unit can process the received signals to charge the battery, thereby realizing the cooperative work of each bridge arm and each processing unit and improving the charging efficiency of the battery.

[0036] Optionally, charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch among a first state, a second state, and a third state in response to the positive half-cycle signal; wherein, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; the control end of the first switch is connected to the controller, the first end of the first switch is respectively connected to the second end of the second switch and the first end of the first capacitor, and the second end of the first switch is respectively connected to the second end of the fourth switch and the first end of the second capacitor; the control end of the second switch is connected to the controller, the first end of the second switch is connected to the ground terminal, and the second end of the second switch is further connected to the first end of the first capacitor; the control end of the third switch is connected to the controller, the first end of the third switch is respectively connected to the second end of the seventh switch and the first end of the third capacitor, and the second end of the third switch is respectively connected to the second end of the first capacitor and a first bridge arm; the control end of the fourth switch is connected to the controller, the first end of the fourth switch is respectively connected to the second end of the fifth switch, the battery, the first end of the seventh switch, and the second end of the eighth switch, and the second end of the fourth switch is further connected to the first end of the second capacitor; the control end of the fifth switch is connected to the controller, the first end of the fifth switch is respectively connected to the second end of the sixth switch and the second end of the second capacitor, and the second end of the fifth switch is further connected to the battery; the control end of the sixth switch is connected to the controller, the first end of the sixth switch is connected to the ground terminal, and the second end of the sixth switch is further connected to the second end of the second capacitor; the control end of the seventh switch is connected to the controller, the first end of the seventh switch is further connected to the battery, and the second end of the seventh switch is further connected to the first end of the third capacitor; the control end of the eighth switch is connected to the controller, the first end of the eighth switch is respectively connected to the second end of the third capacitor and the second end of the ninth switch, and the second end of the eighth switch is further connected to the battery; the control end of the ninth switch is connected to the controller, the first end of the ninth switch is connected to the ground terminal, and the second end of the ninth switch is further connected to the second end of the third capacitor; the first state includes a state in which the second switch, the third switch, the fourth switch, the sixth switch, and the eighth switch are all turned on; the second state includes a state in which the first switch, the fourth switch, the sixth switch, the seventh switch, and the ninth switch are all turned on; the third state includes a state in which the first switch, the fifth switch, the seventh switch, and the ninth switch are all turned on; the first mode includes the first state, and the second mode includes the first state, the second state, and the third state. Thus, by switching the first processing unit among different states, the battery can be charged based on the positive half-cycle signal.

[0037] Optionally, charging the battery according to the positive signal includes: the controller controls the second processing unit to switch among a fourth state, a fifth state, and a sixth state in response to the positive signal; wherein, the second processing unit includes: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is respectively connected to the second terminal of the eleventh switch and the first terminal of the fourth capacitor, and the second terminal of the tenth switch is respectively connected to the second terminal of the thirteenth switch and the first terminal of the fifth capacitor; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is connected to the ground terminal, and the second terminal of the eleventh switch is further connected to the first terminal of the fourth capacitor; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is respectively connected to the second terminal of the sixteenth switch and the first terminal of the sixth capacitor, and the second terminal of the twelfth switch is respectively connected to the second terminal of the fourth capacitor and the second bridge arm; the control terminal of the thirteenth switch is connected to the controller, the first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch, the battery, the first terminal of the sixteenth switch, and the second terminal of the seventeenth switch, and the second terminal of the thirteenth switch is further connected to the first terminal of the fifth capacitor; the control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is respectively connected to the second terminal of the fifteenth switch and the second terminal of the fifth capacitor, and the second terminal of the fourteenth switch is further connected to the battery; the control terminal of the fifteenth switch is connected to the controller, the first terminal of the fifteenth switch is connected to the ground terminal, and the second terminal of the fifteenth switch is further connected to the second terminal of the fifth capacitor; the control terminal of the sixteenth switch is connected to the controller, the first terminal of the sixteenth switch is further connected to the battery, and the second terminal of the sixteenth switch is further connected to the first terminal of the sixth capacitor; the control terminal of the seventeenth switch is connected to the controller, the first terminal of the seventeenth switch is respectively connected to the second terminal of the sixth capacitor and the second terminal of the eighteenth switch, and the second terminal of the seventeenth switch is further connected to the battery; the control terminal of the eighteenth switch is connected to the controller, the first terminal of the eighteenth switch is connected to the ground terminal, and the second terminal of the eighteenth switch is further connected to the second terminal of the sixth capacitor; the fourth state includes a state in which the eleventh switch, the twelfth switch, the thirteenth switch, the fifteenth switch, and the seventeenth switch are all turned on; the fifth state includes a state in which the tenth switch, the thirteenth switch, the fifteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the sixth state includes a state in which the tenth switch, the fourteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the first mode includes the fourth state, and the third mode includes: the fourth state, the fifth state, and the sixth state. Thus, by switching the second processing unit among different states, the battery can be charged based on the positive signal.

[0038] Optionally, charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch between a first state and a second state in response to the positive half-cycle signal; wherein, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor and a third capacitor; the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the third capacitor, and the second terminal of the first switch is respectively connected to the first bridge arm and the first terminal of the first capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is respectively connected to the first terminal of the second capacitor and the second terminal of the third switch, and the second terminal of the second switch is further connected to the first terminal of the third capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the second terminal of the fourth switch, the second terminal of the sixth switch and the battery, and the second terminal of the third switch is further connected to the first terminal of the second capacitor; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is respectively connected to the second terminal of the fifth switch, the second terminal of the first capacitor and the second terminal of the second capacitor, and the second terminal of the fourth switch is further connected to the battery; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is connected to the ground terminal, and the second terminal of the fifth switch is further respectively connected to the second terminal of the first capacitor and the second terminal of the second capacitor; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is respectively connected to the second terminal of the seventh switch and the second terminal of the third capacitor, and the second terminal of the sixth switch is further connected to the battery; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is connected to the ground terminal, and the second terminal of the seventh switch is further connected to the second terminal of the third capacitor; the first state includes: a state in which the first switch, the third switch, the fifth switch and the sixth switch are all turned on; the second state includes: a state in which the second switch, the fourth switch and the seventh switch are all turned on; the first mode includes the first state, and the second mode includes: the first state and the second state. Thus, by switching the first processing unit between different states, the battery can be charged based on the positive half-cycle signal.

[0039] Optionally, charging the battery according to the positive signal includes: the controller controls the second processing unit to switch between a third state and a fourth state in response to the positive signal; wherein, the second processing unit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; the control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is respectively connected to the second terminal of the ninth switch and the first terminal of the sixth capacitor, and the second terminal of the eighth switch is respectively connected to the second bridge arm and the first terminal of the fourth capacitor; the control terminal of the ninth switch is connected to the controller, the first terminal of the ninth switch is respectively connected to the first terminal of the fifth capacitor and the second terminal of the tenth switch, and the second terminal of the ninth switch is further connected to the first terminal of the sixth capacitor; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is respectively connected to the second terminal of the eleventh switch, the second terminal of the thirteenth switch, and the battery, and the second terminal of the tenth switch is further connected to the first terminal of the fifth capacitor; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is respectively connected to the second terminal of the twelfth switch, the second terminal of the fourth capacitor, and the second terminal of the fifth capacitor, and the second terminal of the eleventh switch is further connected to the battery; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is connected to the ground terminal, and the second terminal of the twelfth switch is further respectively connected to the second terminal of the fourth capacitor and the second terminal of the fifth capacitor; the control terminal of the thirteenth switch is connected to the controller, the first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch and the second terminal of the sixth capacitor, and the second terminal of the thirteenth switch is further connected to the battery; the control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is connected to the ground terminal, and the second terminal of the fourteenth switch is further connected to the second terminal of the sixth capacitor; the third state includes a state where the eighth switch, the tenth switch, the twelfth switch, and the thirteenth switch are all turned on; the fourth state includes a state where the ninth switch, the eleventh switch, and the fourteenth switch are all turned on; the first mode includes the third state, and the third mode includes: the third state and the fourth state. Thus, by switching the second processing unit between different states, the battery can be charged based on the positive signal.

[0040] Optionally, charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch between a first state and a second state in response to the positive half-cycle signal; wherein, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor, and a third capacitor; the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor, and the second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is connected to the ground terminal, and the second terminal of the second switch is also respectively connected to the first terminal of the first capacitor and the second terminal of the second capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the first terminal of the fourth switch, the second terminal of the fifth switch, and the first terminal of the third capacitor, and the second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first leg; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is also connected to the first terminal of the third capacitor, and the second terminal of the fourth switch is also connected to the first terminal of the second capacitor; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the battery, and the second terminal of the fifth switch is also connected to the first terminal of the third capacitor; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is respectively connected to the second terminal of the seventh switch and the second terminal of the third capacitor, and the second terminal of the sixth switch is also connected to the battery; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the ground terminal, and the second terminal of the seventh switch is also connected to the second terminal of the third capacitor; the first state includes: a state in which the second switch, the third switch, the fourth switch, and the sixth switch are all turned on; the second state includes: a state in which the first switch, the fifth switch, and the seventh switch are all turned on; the first mode includes the first state, and the second mode includes: the first state and the second state. Thus, by switching the first processing unit between different states, the battery can be charged based on the positive half-cycle signal.

[0041] Optionally, charging the battery according to the positive signal includes: the controller controls the second processing unit to switch between a third state and a fourth state in response to the positive signal; wherein, the second processing unit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; the control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is respectively connected to the second terminal of the ninth switch and the first terminal of the fourth capacitor, and the second terminal of the eighth switch is respectively connected to the second terminal of the eleventh switch and the first terminal of the fifth capacitor; the control terminal of the ninth switch is connected to the controller, the first terminal of the ninth switch is connected to the ground terminal, and the second terminal of the ninth switch is also respectively connected to the first terminal of the fourth capacitor and the second terminal of the fifth capacitor; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is respectively connected to the first terminal of the eleventh switch, the second terminal of the twelfth switch, and the first terminal of the sixth capacitor, and the second terminal of the tenth switch is respectively connected to the second terminal of the fourth capacitor and the second bridge arm; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is also connected to the first terminal of the sixth capacitor, and the second terminal of the eleventh switch is also connected to the first terminal of the fifth capacitor; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is respectively connected to the second terminal of the thirteenth switch and the battery, and the second terminal of the twelfth switch is also connected to the first terminal of the sixth capacitor; the control terminal of the thirteenth switch is connected to the controller, the first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch and the second terminal of the sixth capacitor, and the second terminal of the thirteenth switch is also connected to the battery; the control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is also connected to the ground terminal, and the second terminal of the fourteenth switch is also connected to the second terminal of the sixth capacitor; the third state includes a state in which the ninth switch, the tenth switch, the eleventh switch, and the thirteenth switch are all turned on; the fourth state includes a state in which the eighth switch, the twelfth switch, and the fourteenth switch are all turned on; the first mode includes the third state, and the third mode includes: the third state and the fourth state. In this way, by switching the second processing unit between different states, the battery can be charged based on the positive signal.

[0042] Optionally, charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch between a first state, a second state, a third state, and a fourth state in response to the positive half-cycle signal; wherein, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; the control end of the first switch is connected to the controller, the first end of the first switch is respectively connected to the first end of the first capacitor and the first bridge arm, and the second end of the first switch is respectively connected to the second end of the fourth switch, the second end of the seventh switch, the second end of the ninth switch, and the battery; the control end of the second switch is connected to the controller, the first end of the second switch is connected to the ground end, and the second end of the second switch is respectively connected to the second end of the first capacitor and the second end of the third switch; the control end of the third switch is connected to the controller, the first end of the third switch is respectively connected to the first end of the fourth switch and the first end of the second capacitor, and the second end of the third switch is further connected to the second end of the first capacitor; the control end of the fourth switch is connected to the controller, the first end of the fourth switch is further connected to the first end of the second capacitor, and the second end of the fourth switch is further connected to the battery; the control end of the fifth switch is connected to the controller, the first end of the fifth switch is connected to the ground end, and the second end of the fifth switch is respectively connected to the second end of the second capacitor and the second end of the sixth switch; the control end of the sixth switch is connected to the controller, the first end of the sixth switch is respectively connected to the first end of the third capacitor and the first end of the seventh switch, and the second end of the sixth switch is further connected to the second end of the second capacitor; the control end of the seventh switch is connected to the controller, the first end of the seventh switch is further connected to the first end of the third capacitor, and the second end of the seventh switch is further connected to the battery; the control end of the eighth switch is connected to the controller, the first end of the eighth switch is connected to the ground end, and the second end of the eighth switch is respectively connected to the second end of the third capacitor and the first end of the ninth switch; the control end of the ninth switch is connected to the controller, the first end of the ninth switch is further connected to the second end of the third capacitor, and the second end of the ninth switch is further connected to the battery; the first state includes: a state where the first switch, the second switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on; the second state includes: a state where the third switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on; the third state includes: a state where the third switch, the sixth switch, the seventh switch, and the eighth switch are all turned on; the fourth state includes: a state where the third switch, the sixth switch, and the ninth switch are all turned on; the first mode includes the first state, and the second mode includes: the first state, the second state, the third state, and the fourth state. Thus, by switching the first processing unit in different states, the battery can be charged based on the positive half-cycle signal.

[0043] Optionally, charging the battery according to the positive signal includes: the controller controls the second processing unit to switch among the fifth state, the sixth state, the seventh state, and the eighth state in response to the positive signal; wherein, the second processing unit includes: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is respectively connected to the first terminal of the fourth capacitor and the second bridge arm, and the second terminal of the tenth switch is respectively connected to the second terminal of the thirteenth switch, the second terminal of the sixteenth switch, the second terminal of the eighteenth switch, and the battery; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is connected to the ground terminal, and the second terminal of the eleventh switch is respectively connected to the second terminal of the fourth capacitor and the second terminal of the twelfth switch; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is respectively connected to the first terminal of the thirteenth switch and the first terminal of the fifth capacitor, and the second terminal of the twelfth switch is further connected to the second terminal of the fourth capacitor; the control terminal of the thirteenth switch is connected to the controller, the first terminal of the thirteenth switch is further connected to the first terminal of the fifth capacitor, and the second terminal of the thirteenth switch is further connected to the battery; the control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is connected to the ground terminal, and the second terminal of the fourteenth switch is respectively connected to the second terminal of the fifth capacitor and the second terminal of the fifteenth switch; the control terminal of the fifteenth switch is connected to the controller, the first terminal of the fifteenth switch is respectively connected to the first terminal of the sixth capacitor and the first terminal of the sixteenth switch, and the second terminal of the fifteenth switch is further connected to the second terminal of the fifth capacitor; the control terminal of the sixteenth switch is connected to the controller, the first terminal of the sixteenth switch is further connected to the first terminal of the sixth capacitor, and the second terminal of the sixteenth switch is further connected to the battery; the control terminal of the seventeenth switch is connected to the controller, the first terminal of the seventeenth switch is connected to the ground terminal, and the second terminal of the seventeenth switch is respectively connected to the second terminal of the sixth capacitor and the first terminal of the eighteenth switch; the control terminal of the eighteenth switch is connected to the controller, the first terminal of the eighteenth switch is further connected to the second terminal of the sixth capacitor, and the second terminal of the eighteenth switch is further connected to the battery; the fifth state includes a state in which the tenth switch, the eleventh switch, the thirteenth switch, the fourteenth switch, the sixteenth switch, and the seventeenth switch are all turned on; the sixth state includes a state in which the twelfth switch, the thirteenth switch, the fourteenth switch, the sixteenth switch, and the seventeenth switch are all turned on; the seventh state includes a state in which the twelfth switch, the fifteenth switch, the sixteenth switch, and the seventeenth switch are all turned on; the eighth state includes a state in which the twelfth switch, the fifteenth switch, and the eighteenth switch are all turned on; the first mode includes the fifth state, and the third mode includes: the fifth state, the sixth state, the seventh state, and the eighth state. In this way, by switching the second processing unit among different states, the battery can be charged based on the positive signal.

[0044] Optionally, charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch among a first state, a second state, and a third state in response to the positive half-cycle signal; wherein, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a first capacitor, and a second capacitor; the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor, and the second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is connected to the ground terminal, and the second terminal of the second switch is further connected to the first terminal of the first capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the first terminal of the fourth switch, the second terminal of the fifth switch, and the battery, and the second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first bridge arm; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is further connected to the battery, and the second terminal of the fourth switch is further connected to the first terminal of the second capacitor; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the second terminal of the second capacitor, and the second terminal of the fifth switch is further connected to the battery; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is connected to the ground terminal, and the second terminal of the sixth switch is further connected to the second terminal of the second capacitor; the first state includes: a state in which the second switch, the third switch, the fourth switch, and the sixth switch are all turned on; the second state includes: a state in which the first switch, the fourth switch, and the sixth switch are all turned on; the third state includes: a state in which the first switch and the fifth switch are both turned on; the first mode includes the first state, and the second mode includes: the first state, the second state, and the third state. Thus, by switching the first processing unit among different states, the battery can be charged based on the positive half-cycle signal.

[0045] Optionally, charging the battery according to the positive signal includes: the controller controls the second processing unit to switch among a fourth state, a fifth state, and a sixth state in response to the positive signal; wherein, the second processing unit includes: a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is respectively connected to the second terminal of the eighth switch and the first terminal of the third capacitor, and the second terminal of the seventh switch is respectively connected to the second terminal of the tenth switch and the first terminal of the fourth capacitor; the control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is connected to the ground terminal, and the second terminal of the eighth switch is further connected to the first terminal of the third capacitor; the control terminal of the ninth switch is connected to the controller, the first terminal of the ninth switch is respectively connected to the first terminal of the tenth switch, the second terminal of the eleventh switch, and the battery, and the second terminal of the ninth switch is respectively connected to the second terminal of the third capacitor and the second bridge arm; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is further connected to the battery, and the second terminal of the tenth switch is further connected to the first terminal of the fourth capacitor; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is respectively connected to the second terminal of the twelfth switch and the second terminal of the fourth capacitor, and the second terminal of the eleventh switch is further connected to the battery; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is connected to the ground terminal, and the second terminal of the twelfth switch is further connected to the second terminal of the fourth capacitor; the fourth state includes a state where the eighth switch, the ninth switch, the tenth switch, and the twelfth switch are all turned on; the fifth state includes a state where the seventh switch, the tenth switch, and the twelfth switch are all turned on; the sixth state includes a state where the seventh switch and the eleventh switch are all turned on; the first mode includes the fourth state, and the third mode includes: the fourth state, the fifth state, and the sixth state. Thus, by switching the second processing unit among different states, the battery can be charged based on the positive signal.

[0046] It should be understood that since the principle of solving the problem of this charging method is similar to that of the aforementioned wireless power receiving circuit, the implementation and technical effects of this charging method can refer to the implementation and technical effects of the aforementioned wireless power receiving circuit, and the repeated parts will not be elaborated. Description of the Drawings

[0047] Figure 1 Schematic diagram of the application scenario of the wireless charging system provided by the embodiment of the present application;

[0048] Figure 2 Schematic diagram of the structure of the wireless charging system provided by the embodiment of the present application;

[0049] Figure 3 Schematic diagram of the structure of a wireless power receiving circuit provided by the embodiment of the present application;

[0050] Figure 4Schematic structural diagram of another wireless power receiving circuit provided by an embodiment of the present application;

[0051] Figure 5 For Figure 4 Schematic diagram of the working principle of the structure shown in;

[0052] Figure 6 Schematic structural diagram of yet another wireless power receiving circuit provided by an embodiment of the present application;

[0053] Figure 7 For Figure 6 Schematic diagram of the working principle of the structure shown in;

[0054] Figure 8 Schematic structural diagram of still another wireless power receiving circuit provided by an embodiment of the present application;

[0055] Figure 9 For Figure 8 Schematic diagram of the working principle of the structure shown in;

[0056] Figure 10 Schematic structural diagram of still another wireless power receiving circuit provided by an embodiment of the present application;

[0057] Figure 11 For Figure 10 Schematic diagram of the working principle of the structure shown in;

[0058] Figure 12 Schematic structural diagram of still another wireless power receiving circuit provided by an embodiment of the present application;

[0059] Figure 13 For Figure 12 Schematic diagram of the working principle of the structure shown in;

[0060] Figure 14 Schematic structural diagram of still another wireless power receiving circuit provided by an embodiment of the present application. Detailed implementation manners

[0061] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0062] It should be noted that the same reference numerals in the drawings of the present application represent the same or similar structures, and thus their repeated descriptions will be omitted. The words expressing positions and directions described in the present application are all illustrated by taking the drawings as examples, but can be changed according to needs, and all changes made are included in the protection scope of the present application. The drawings of the present application are only used to illustrate the relative positional relationship and do not represent the actual scale.

[0063] To facilitate the understanding of the technical solution provided by the embodiments of the present application, the following first describes its application scenario.

[0064] The technical solution provided by the embodiments of the present application can be applied to a wireless charging system. Compared with wired charging, wireless charging has the advantages of being easy to carry and simple to operate. Figure 1 An application scenario of a wireless charging system is exemplarily shown. Referring to Figure 1 as shown, after the power receiving device approaches the charging device, electromagnetic induction occurs between the coil in the power receiving device and the coil in the charging device, and energy (or electrical energy, or wireless charging signal) is transmitted from the charging device to the power receiving device. Among them, the electronic device may include the power receiving device, and the electronic device may include, but is not limited to, devices such as mobile phones, tablets, and smart wearable devices. The charging device may include, but is not limited to, a wireless charger, a wireless power bank, etc.

[0065] Figure 2 A specific structural schematic diagram of a wireless charging system is exemplarily shown. Referring to Figure 2 as shown, the charging device may include an inverter and a transmitting coil. The power receiving device may include: a receiving coil, a rectifier, a linear voltage regulator, an overvoltage protector, a DCDC converter, and a battery, which are cascaded in sequence. Among them, the input end of the inverter is connected to a DC power supply, and is used to convert the DC electrical energy output by the DC power supply into AC electrical energy and transmit it to the receiving coil through the transmitting coil. The receiving coil receives the AC electrical energy transmitted by the transmitting coil, converts it into DC electrical energy through the rectifier, and then outputs it to the battery after being processed by the linear voltage regulator, the overvoltage protector, and the DCDC converter in sequence, so as to charge the battery. It should be understood that Figure 2 the charging device in [[ ]] takes a wireless charger as an example. Therefore, when charging the power receiving device, the charging device needs to be connected to a DC power supply. If the wireless charging device is a wireless power bank, the charging device may not be connected to a DC power supply when charging the power receiving device. Among them, the transmitting coil and the receiving coil constitute an LC resonator. The transmitting coil can be regarded as a power transmitter in the LC resonator, and the receiving coil can be regarded as a power receiver in the LC resonator.

[0066] As the charging power of electronic products continues to increase, the board area occupied by wired and wireless charging solutions is getting larger and larger. The product board space is limited, resulting in a tight device layout. In high-power wireless charging scenarios, due to the adoption of a multi-stage circuit cascading scheme (such as Figure 2 the cascading structure of the receiving coil, rectifier, linear voltage regulator, overvoltage protector, and DCDC converter shown in [[ ]]), each stage of the circuit works completely independently. Therefore, high-voltage large capacitors need to be added at the output end of the rectifier bridge and the output end of the linear voltage regulator for filtering, resulting in a bloated area of the entire wireless charging solution and a low wireless charging efficiency, large losses, affecting the fast charging speed and user experience.

[0067] To solve the above problems, an embodiment of the present application provides a wireless charging solution. By setting two bridge arms and the connection relationship between the two bridge arms and the DCDC converter, it is ensured that the two bridge arms and the DCDC converter are not in a cascaded relationship. When processing the AC signal, they cooperate with each other, and they are not independent of each other but affect each other. Therefore, the wireless power receiving circuit including the two bridge arms and the DCDC converter belongs to a single-stage circuit solution, and the loss generated during battery charging is a single-stage loss. Compared with the multi-stage losses in the multi-stage circuit cascading solution, it can effectively reduce the energy loss during charging and improve the charging efficiency.

[0068] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. It should be understood that the drawings in this article are only used to illustrate the relative position relationship or connection relationship between components. Some components are drawn in an exaggerated manner for easy understanding, and the shapes and sizes of the components in the drawings do not reflect the actual proportional relationship.

[0069] Figure 3 An exemplary structural schematic diagram of a wireless power receiving circuit provided by an embodiment of the present application is shown. Referring to Figure 3 as shown, the wireless power receiving circuit may include: a power receiver, a first bridge arm, a second bridge arm, a DCDC converter, and a controller; the DCDC converter includes a first processing unit and a second processing unit; the power receiver is respectively connected to the midpoint of the bridge arm of the first bridge arm (i.e., node P1) and the midpoint of the bridge arm of the second bridge arm (i.e., node P2). The power receiver is configured to output an AC signal to the midpoints of the bridge arms of the first bridge arm and the second bridge arm in response to wireless power transmission, that is, in response to the electrical energy wirelessly transmitted through the LC resonator; the first bridge arm is further respectively connected to the first processing unit, the ground terminal GND, and the controller, and the second bridge arm is further respectively connected to the second processing unit, the ground terminal GND, and the controller. Figure 3 The controller is not shown in Figure 3 either, so

[0070] That is to say, the AC signal includes a positive half-cycle signal and a negative half-cycle signal. The two bridge arms can transmit the positive half-cycle signal in the AC signal to the first processing unit, so that the first processing unit charges the battery based on the positive half-cycle signal. In addition, the two bridge arms can also process the negative half-cycle signal in the AC signal to obtain a corresponding positive signal, and transmit the positive signal to the second processing unit, so that the second processing unit charges the battery based on the positive signal. In other words, the first processing unit can charge the battery based on the positive half-cycle signal under the action of the two bridge arms, and the second processing unit can also charge the battery based on the positive signal corresponding to the negative half-cycle signal under the action of the two bridge arms. Therefore, through the cooperation of the first processing unit, the second processing unit and the two bridge arms, the battery can be charged based on the AC signal, so that the overall composed of the DCDC converter and the two bridge arms can play the role of AC-DC conversion. Moreover, the DCDC converter and the two bridge arms cooperate with each other during operation and are not independent of each other. Therefore, the wireless power receiving circuit provided in the embodiment of the present application belongs to a single-stage circuit solution. Furthermore, the loss during battery charging belongs to single-stage loss. Compared with the multi-stage loss in the multi-stage circuit cascading solution, the energy loss during charging can be effectively reduced, and the charging efficiency of the battery can be improved.

[0071] Wherein, the positive pole of the power receiver (i.e., Figure 3 the end shown as + in Figure 3 is connected to the midpoint of the first bridge arm (i.e., node P1), and the negative pole of the power receiver (i.e., Figure 3 the end shown as - in

[0072] is connected to the midpoint of the second bridge arm (i.e., node P2), as shown in Figure 3 Figure 3 ; alternatively, the positive pole of the power receiver is connected to the midpoint of the second bridge arm (i.e., node P2), and the negative pole of the power receiver is connected to the midpoint of the first bridge arm (i.e., node P1), and no illustration is given. In this article, it is illustrated by taking the connection that the positive pole of the power receiver is connected to the midpoint of the first bridge arm (i.e., node P1) and the negative pole of the power receiver is connected to the midpoint of the second bridge arm (i.e., node P2) as an example.

[0072] Refer to Figure 3As shown, the first bridge arm may include: a first bridge arm switch Q1 and a second bridge arm switch Q2. The control electrode of the first bridge arm switch Q1 is connected to the controller. The first pole of the first bridge arm switch Q1 is respectively connected to the positive electrode of the power receiver (i.e., node P1) and the second pole of the second bridge arm switch Q2. The second pole of the first bridge arm switch Q1 is connected to the first processing unit. The control electrode of the second bridge arm switch Q2 is connected to the controller. The first pole of the second bridge arm switch Q2 is connected to the ground terminal GND. The second pole of the second bridge arm switch Q2 is also connected to the positive electrode of the power receiver. The second bridge arm may include: a third bridge arm switch Q3 and a fourth bridge arm switch Q4. The control electrode of the third bridge arm switch Q3 is connected to the controller. The first pole of the third bridge arm switch Q3 is respectively connected to the negative electrode of the power receiver (i.e., node P2) and the second pole of the fourth bridge arm switch Q4. The second pole of the third bridge arm switch Q3 is connected to the second processing unit. The control electrode of the fourth bridge arm switch Q4 is connected to the controller. The first pole of the fourth bridge arm switch Q4 is connected to the ground terminal GND. The second pole of the fourth bridge arm switch Q4 is also connected to the negative electrode of the power receiver.

[0073] Referring to Figure 4As shown, the first processing unit may include: a first switch M1, a second switch M2, a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, a seventh switch M7, an eighth switch M8, a ninth switch M9, a first capacitor C1, a second capacitor C2, and a third capacitor C3; wherein, the control terminal of the first switch M1 is connected to the controller, the first terminal of the first switch M1 is respectively connected to the second terminal of the second switch M2 and the first terminal of the first capacitor C1, and the second terminal of the first switch M1 is respectively connected to the second terminal of the fourth switch M4 and the first terminal of the second capacitor C2; the control terminal of the second switch M2 is connected to the controller, the first terminal of the second switch M2 is connected to the ground terminal GND, and the second terminal of the second switch M2 is further connected to the first terminal of the first capacitor C1; the control terminal of the third switch M3 is connected to the controller, the first terminal of the third switch M3 is respectively connected to the second terminal of the seventh switch M7 and the first terminal of the third capacitor C3, and the second terminal of the third switch M3 is respectively connected to the second terminal of the first capacitor C1 and the first arm; the control terminal of the fourth switch M4 is connected to the controller, the first terminal of the fourth switch M4 is respectively connected to the second terminal of the fifth switch M5, the battery, the first terminal of the seventh switch M7, and the second terminal of the eighth switch M8, and the second terminal of the fourth switch M4 is further connected to the first terminal of the second capacitor C2; the control terminal of the fifth switch M5 is connected to the controller, the first terminal of the fifth switch M5 is respectively connected to the second terminal of the sixth switch M6 and the second terminal of the second capacitor C2, and the second terminal of the fifth switch M5 is further connected to the battery; the control terminal of the sixth switch M6 is connected to the controller, the first terminal of the sixth switch M6 is connected to the ground terminal GND, and the second terminal of the sixth switch M6 is further connected to the second terminal of the second capacitor C2; the control terminal of the seventh switch M7 is connected to the controller, the first terminal of the seventh switch M7 is further connected to the battery, and the second terminal of the seventh switch M7 is further connected to the first terminal of the third capacitor C3; the control terminal of the eighth switch M8 is connected to the controller, the first terminal of the eighth switch M8 is respectively connected to the second terminal of the third capacitor C3 and the second terminal of the ninth switch M9, and the second terminal of the eighth switch M8 is further connected to the battery; the control terminal of the ninth switch M9 is connected to the controller, the first terminal of the ninth switch M9 is connected to the ground terminal GND, and the second terminal of the ninth switch M9 is further connected to the second terminal of the third capacitor C3.

[0074] Continue to refer to Figure 4As shown in the figure, the second processing unit may include: the tenth switch M10, the eleventh switch M11, the twelfth switch M12, the thirteenth switch M13, the fourteenth switch M14, the fifteenth switch M15, the sixteenth switch M16, the seventeenth switch M17, the eighteenth switch M18, the fourth capacitor C4, the fifth capacitor C5, and the sixth capacitor C6; wherein, the control terminal of the tenth switch M10 is connected to the controller, the first terminal of the tenth switch M10 is respectively connected to the second terminal of the eleventh switch M11 and the first terminal of the fourth capacitor C4, and the second terminal of the tenth switch M10 is respectively connected to the second terminal of the thirteenth switch M13 and the first terminal of the fifth capacitor C5; the control terminal of the eleventh switch M11 is connected to the controller, the first terminal of the eleventh switch M11 is connected to the ground terminal GND, and the second terminal of the eleventh switch M11 is also connected to the first terminal of the fourth capacitor C4; the control terminal of the twelfth switch M12 is connected to the controller, the first terminal of the twelfth switch M12 is respectively connected to the second terminal of the sixteenth switch M16 and the first terminal of the sixth capacitor C6, and the second terminal of the twelfth switch M12 is respectively connected to the second terminal of the fourth capacitor C4 and the second bridge arm; the control terminal of the thirteenth switch M13 is connected to the controller, the first terminal of the thirteenth switch M13 is respectively connected to the second terminal of the fourteenth switch M14, the battery, the first terminal of the sixteenth switch M16, and the second terminal of the seventeenth switch M17, and the second terminal of the thirteenth switch M13 is also connected to the first terminal of the fifth capacitor C5; the control terminal of the fourteenth switch M14 is connected to the controller, the first terminal of the fourteenth switch M14 is respectively connected to the second terminal of the fifteenth switch M15 and the second terminal of the fifth capacitor C5, and the second terminal of the fourteenth switch M14 is also connected to the battery; the control terminal of the fifteenth switch M15 is connected to the controller, the first terminal of the fifteenth switch M15 is connected to the ground terminal GND, and the second terminal of the fifteenth switch M15 is also connected to the second terminal of the fifth capacitor C5; the control terminal of the sixteenth switch M16 is connected to the controller, the first terminal of the sixteenth switch M16 is also connected to the battery, and the second terminal of the sixteenth switch M16 is also connected to the first terminal of the sixth capacitor C6; the control terminal of the seventeenth switch M17 is connected to the controller, the first terminal of the seventeenth switch M17 is respectively connected to the second terminal of the sixth capacitor C6 and the second terminal of the eighteenth switch M18, and the second terminal of the seventeenth switch M17 is also connected to the battery; the control terminal of the eighteenth switch M18 is connected to the controller, the first terminal of the eighteenth switch M18 is connected to the ground terminal GND, and the second terminal of the eighteenth switch M18 is also connected to the second terminal of the sixth capacitor C6. In other words, the structure of the second processing unit is basically similar to that of the first processing unit, which can simplify the structural complexity of the DCDC converter, reduce the manufacturing difficulty of the wireless power receiving circuit, and reduce the manufacturing cost.

[0075] It should be understood that in this text, each switch and each leg switch can be, but are not limited to, switching devices with control terminals such as field effect transistors and triodes, and can be specifically designed according to actual needs, and no specific limitation is made here. Among them, taking the switch and the leg switch as field effect transistors as an example, the control electrode is used as the gate, the first electrode is used as the source, and the second electrode is used as the drain.

[0076] Based on Figure 4 the structure shown in, the specific working process of the wireless power receiving circuit may include:

[0077] For the positive half-cycle signal of the AC signal: The controller controls each switch, so that the first processing unit works in the first state, the second state, the third state, the second state, and the first state in sequence, realizing the switching of the first processing unit between the first state, the second state, and the third state. And the controller controls each leg switch, so that the two legs work in the first mode, the second mode, and the first mode in sequence, realizing the switching of each leg between the first mode and the second mode. Among them, the first mode includes the first state, and the second mode includes the first state, the second state, and the third state.

[0078] In the first state (i.e., mode 1) of the first mode, the second leg switch Q2 and the fourth leg switch Q4 are both turned on, and the first leg switch Q1 and the third leg switch Q3 are both turned off; the second switch M2, the third switch M3, the fourth switch M4, the sixth switch M6, and the eighth switch M8 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 5 the shown mode 1, the resistor R0 is used to represent the battery, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the resistor R0 used to represent the battery are all disconnected from the power receiver represented by AC. The first capacitor C1 discharges to the resistor R0, and the second capacitor C2 is in parallel with the resistor R0, so Vb = Vc2. It should be noted that when the mode 1 first appears in the first processing unit, since the first capacitor C1 does not store electrical energy, Vb is about 0V at this time; but with the cyclic operation of each mode, when the mode 1 appears later, the first capacitor C1 already stores electrical energy, so the first capacitor C1 can charge the resistor R0, and at this time Vb = Vc2.

[0079] In the first state (i.e., mode 2) of the second mode, the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the second switch M2, the third switch M3, the fourth switch M4, the sixth switch M6, and the eighth switch M8 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 5In the shown Mode 2, the second capacitor C2 and the third capacitor C3 are connected in series and then in parallel with the first capacitor C1, and the first capacitor C1 is in parallel with the power receiver represented by AC, and the second capacitor C2 is in parallel with the resistor R0 representing the battery, so it can be obtained that V AC = Vc1, Vc1 = Vc2 + Vc3 (i.e., relationship 1), Vc2 = Vb (i.e., relationship 2).

[0080] In the second state (i.e., Mode 3) of the second mode, the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the first switch M1, the fourth switch M4, the sixth switch M6, the seventh switch M7, and the ninth switch M9 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combining Figure 5 the shown Mode 3, the second capacitor C2, the third capacitor C3, and the resistor R0 are connected in parallel and then in series with the first capacitor C1 to form a whole, and this whole is in parallel with the power receiver represented by AC, so it can be obtained that V AC = Vc1 + Vc2, Vc2 = Vc3 = Vb (i.e., relationship 3). Combining relationship 1, relationship 2, and relationship 3, it can be obtained that V AC = 3Vb.

[0081] In the third state (i.e., Mode 4) of the second mode, the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the first switch M1, the fifth switch M5, the seventh switch M7, and the ninth switch M9 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combining Figure 5 the shown Mode 4, the first capacitor C1, the second capacitor C2, and the third capacitor C3 are connected in series and then in parallel with the power receiver represented by AC, so it can be obtained that V AC = Vc1 + Vc2 + Vc3 (i.e., relationship 4). Combining relationship 1, relationship 2, relationship 3, and relationship 4, it can be obtained that V AC = 4Vb.

[0082] Therefore, in Mode 1, the charging voltage Vb provided to the battery is approximately the voltage of the second capacitor C2; in Mode 2, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; in Mode 3, the charging voltage Vb provided to the battery is approximately 1 / 3 of the positive half-cycle signal of the AC signal; in Mode 4, the charging voltage Vb provided to the battery is approximately 1 / 4 of the positive half-cycle signal of the AC signal.

[0083] Combining Figure 5As shown, in response to the positive half-cycle signal, the whole formed by the two bridge arms and the first processing unit works in modes 1, 2, 3, 4, 3, 2, 1 in sequence. Among them, in the process of the signal in the positive half-cycle signal increasing from 0 to the maximum value of the signal, the whole formed by the two bridge arms and the first processing unit works in modes 1, 2, 3, 4 in sequence; in the process of the signal in the positive half-cycle signal decreasing from the maximum value of the signal to 0, the whole formed by the two bridge arms and the first processing unit works in modes 4, 3, 2, 1 in sequence. And the switching timing between each mode can be designed according to actual needs and is not specifically limited here.

[0084] For the negative half-cycle signal of the AC signal: The controller controls each switch so that the second processing unit works in the fourth state, the fifth state, the sixth state, the fifth state, and the fourth state in sequence, realizing the switching of the second processing unit between the fourth state, the fifth state, and the sixth state. And the controller controls each bridge arm switch so that the two bridge arms work in the first mode, the third mode, and the first mode in sequence, realizing the switching of each bridge arm between the first mode and the third mode. Among them, the first mode includes the fourth state, and the third mode includes: the fourth state, the fifth state, and the sixth state.

[0085] In the fourth state (i.e., mode 5) of the first mode, the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are both turned on, and the first bridge arm switch Q1 and the third bridge arm switch Q3 are both turned off; the eleventh switch M11, the twelfth switch M12, the thirteenth switch M13, the fifteenth switch M15, and the seventeenth switch M17 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 5 connection relationship shown in mode 5 in

[0086] In the fourth state (i.e., mode 6) of the third mode, the second bridge arm switch Q2 and the third bridge arm switch Q3 are both turned on, and the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are both turned off; the eleventh switch M11, the twelfth switch M12, the thirteenth switch M13, the fifteenth switch M15, and the seventeenth switch M17 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 5 connection relationship shown in mode 6 in

[0087] In the fifth state of the third mode (i.e., mode 7), the second leg switch Q2 and the third leg switch Q3 are both turned on, and the first leg switch Q1 and the fourth leg switch Q4 are both turned off; the tenth switch M10, the thirteenth switch M13, the fifteenth switch M15, the sixteenth switch M16, and the eighteenth switch M18 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery exhibit Figure 5 the connection relationship shown in mode 7 in

[0088] In the sixth state of the third mode (i.e., mode 8), the second leg switch Q2 and the third leg switch Q3 are both turned on, and the first leg switch Q1 and the fourth leg switch Q4 are both turned off; the tenth switch M10, the fourteenth switch M14, the sixteenth switch M16, and the eighteenth switch M18 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery exhibit Figure 5 the connection relationship shown in mode 8 in

[0089] Similarly, for the second processing unit, on the basis that the working process is similar to that of the first processing unit, in mode 5, the charging voltage Vb provided to the battery is approximately the voltage of the fifth capacitor C5; in mode 6, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive signal corresponding to the negative half-cycle signal in the AC signal; in mode 7, the charging voltage Vb provided to the battery is approximately 1 / 3 of the positive signal corresponding to the negative half-cycle signal in the AC signal; in mode 8, the charging voltage Vb provided to the battery is approximately 1 / 4 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0090] Based on this, combined with Figure 5 as shown, in response to the positive signal corresponding to the negative half-cycle signal, the overall composed of the two legs and the second processing unit works in mode 5, mode 6, mode 7, mode 8, mode 7, mode 6, mode 5 in sequence. Among them, in the process of the signal in the positive signal increasing from 0 to the maximum value of the signal, the overall composed of the two legs and the second processing unit works in mode 5, mode 6, mode 7, mode 8 in sequence; in the process of the signal in the positive signal decreasing from the maximum value of the signal to 0, the overall composed of the two legs and the second processing unit works in mode 8, mode 7, mode 6, mode 5 in sequence. And the switching timing between each mode can be designed according to actual needs, and no specific limitation is made here.

[0091] In summary, based on the above working process, the first processing unit charges the battery based on the positive half-cycle signal, and the second processing unit charges the battery based on the positive signal corresponding to the negative half-cycle signal, and the battery charging based on the AC signal is realized cyclically. And the charging voltage provided to the battery in different modes may be different, but the difference is not significant, so that the battery can be charged under a relatively stable charging voltage. It should be understood that when charging the battery, the specific charging strategy can be designed according to the actual situation. The embodiments of the present application do not focus on the specific charging strategy as long as the battery can be charged.

[0092] Referring to Figure 3 As shown, since the node P1 is connected to the positive electrode of the power receiver and the node P2 is connected to the negative electrode of the power receiver, for the positive half-cycle signal, the potential of the node P1 is higher than that of the node P2. Therefore, when both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are turned on, the node P2 with a lower potential is connected to the ground terminal GND, and the node P1 with a higher potential is connected to the first processing unit. At this time, the signal transmitted to the first processing unit is a non-negative signal, so the positive half-cycle signal can be transmitted to the first processing unit to enable the first processing unit to charge the battery based on the positive half-cycle signal. For the negative half-cycle signal, the potential of the node P1 is lower than that of the node P2. Therefore, when both the third bridge arm switch Q3 and the second bridge arm switch Q2 are turned on, the node P1 with a lower potential is connected to the ground terminal GND, and the node P2 with a higher potential is connected to the second processing unit. At this time, the signal transmitted to the second processing unit is also a non-negative signal, that is, the signal transmitted to the second processing unit is a positive signal corresponding to the negative half-cycle signal, so that the second processing unit can charge the battery based on the positive signal.

[0093] It should be understood that in the above-described structure, the controllers involved can be the same controller, that is, two bridge arms and the DCDC converter are controlled by one controller; or, in the above-described structure, the controllers involved can also be different controllers, that is, two bridge arms and the DCDC converter are controlled by multiple controllers, which can be specifically designed according to actual needs and are not specifically limited herein. Among them, the specific structure of the controller can be any device known to those skilled in the art that can implement the control function, such as but not limited to a single-chip microcomputer, an FPGA (Field Programmable Gate Array), a central processing unit, etc., which are not limited herein.

[0094] Figure 6 Exemplarily shows a schematic structural diagram of a wireless power receiving circuit provided by an embodiment of the present application. Referring to Figure 6 As shown, the wireless power receiving circuit in this embodiment is the same as that in the foregoing embodiment Figure 4The structures of the wireless power receiving circuits shown are basically similar, except that the structures of the first processing unit and the second processing unit are different. Exemplarily, referring to Figure 6 as shown, the first processing unit may include: a first switch M1, a second switch M2, a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, a seventh switch M7, a first capacitor C1, a second capacitor C2, and a third capacitor C3; wherein, the control terminal of the first switch M1 is connected to the controller, the first terminal of the first switch M1 is respectively connected to the second terminal of the second switch M2 and the first terminal of the third capacitor C3, and the second terminal of the first switch M1 is respectively connected to the first bridge arm and the first terminal of the first capacitor C1; the control terminal of the second switch M2 is connected to the controller, the first terminal of the second switch M2 is respectively connected to the first terminal of the second capacitor C2 and the second terminal of the third switch M3, and the second terminal of the second switch M2 is further connected to the first terminal of the third capacitor C3; the control terminal of the third switch M3 is connected to the controller, the first terminal of the third switch M3 is respectively connected to the second terminal of the fourth switch M4, the second terminal of the sixth switch M6, and the battery, and the second terminal of the third switch M3 is further connected to the first terminal of the second capacitor C2; the control terminal of the fourth switch M4 is connected to the controller, the first terminal of the fourth switch M4 is respectively connected to the second terminal of the fifth switch M5, the second terminal of the first capacitor C1, and the second terminal of the second capacitor C2, and the second terminal of the fourth switch M4 is further connected to the battery; the control terminal of the fifth switch M5 is connected to the controller, the first terminal of the fifth switch M5 is connected to the ground terminal GND, and the second terminal of the fifth switch M5 is further respectively connected to the second terminal of the first capacitor C1 and the second terminal of the second capacitor C2; the control terminal of the sixth switch M6 is connected to the controller, the first terminal of the sixth switch M6 is respectively connected to the second terminal of the seventh switch M7 and the second terminal of the third capacitor C3, and the second terminal of the sixth switch M6 is further connected to the battery; the control terminal of the seventh switch M7 is connected to the controller, the first terminal of the seventh switch M7 is connected to the ground terminal GND, and the second terminal of the seventh switch M7 is further connected to the second terminal of the third capacitor C3.

[0095] The second processing unit may include: an eighth switch M8, a ninth switch M9, a tenth switch M10, an eleventh switch M11, a twelfth switch M12, a thirteenth switch M13, a fourteenth switch M14, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6; wherein, the control terminal of the eighth switch M8 is connected to the controller, the first terminal of the eighth switch M8 is respectively connected to the second terminal of the ninth switch M9 and the first terminal of the sixth capacitor C6, and the second terminal of the eighth switch M8 is respectively connected to the second bridge arm and the first terminal of the fourth capacitor C4; the control terminal of the ninth switch M9 is connected to the controller, the first terminal of the ninth switch M9 is respectively connected to the first terminal of the fifth capacitor C5 and the second terminal of the tenth switch M10, and the second terminal of the ninth switch M9 is further connected to the first terminal of the sixth capacitor C6; the control terminal of the tenth switch M10 is connected to the controller, the first terminal of the tenth switch M10 is respectively connected to the second terminal of the eleventh switch M11, the second terminal of the thirteenth switch M13, and the battery, and the second terminal of the tenth switch M10 is further connected to the first terminal of the fifth capacitor C5; the control terminal of the eleventh switch M11 is connected to the controller, the first terminal of the eleventh switch M11 is respectively connected to the second terminal of the twelfth switch M12, the second terminal of the fourth capacitor C4, and the second terminal of the fifth capacitor C5, and the second terminal of the eleventh switch M11 is further connected to the battery; the control terminal of the twelfth switch M12 is connected to the controller, the first terminal of the twelfth switch M12 is connected to the ground terminal GND, and the second terminal of the twelfth switch M12 is further respectively connected to the second terminal of the fourth capacitor C4 and the second terminal of the fifth capacitor C5; the control terminal of the thirteenth switch M13 is connected to the controller, the first terminal of the thirteenth switch M13 is respectively connected to the second terminal of the fourteenth switch M14 and the second terminal of the sixth capacitor C6, and the second terminal of the thirteenth switch M13 is further connected to the battery; the control terminal of the fourteenth switch M14 is connected to the controller, the first terminal of the fourteenth switch M14 is connected to the ground terminal GND, and the second terminal of the fourteenth switch M14 is further connected to the second terminal of the sixth capacitor C6.

[0096] Based on Figure 6 the structure shown in

[0097] For the positive half-cycle signal of the AC signal: The controller controls each switch, so that the first processing unit works in the first state, the second state, and the first state in sequence, realizing the switching of the first processing unit between the first state and the second state. And the controller controls each bridge arm switch, so that the two bridge arms work in the first mode, the second mode, and the first mode in sequence, realizing the switching of each bridge arm between the first mode and the second mode. Among them, the first mode includes the first state, and the second mode includes the first state and the second state.

[0098] In the first state of the first mode (i.e., mode 1), the second leg switch Q2 and the fourth leg switch Q4 are both turned on, and the first leg switch Q1 and the third leg switch Q3 are both turned off; the first switch M1, the third switch M3, the fifth switch M5, and the sixth switch M6 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 7 In mode 1 shown in, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the resistor R0 representing the battery are all disconnected from the power receiver represented by AC. The first capacitor C1 discharges to the resistor R0, and the second capacitor C2 is in parallel with the resistor R0, so Vb = Vc2.

[0099] In the first state of the second mode (i.e., mode 2), the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the first switch M1, the third switch M3, the fifth switch M5, and the sixth switch M6 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 7 In mode 2 shown in, the second capacitor C2 and the third capacitor C3 are connected in series and then in parallel with the first capacitor C1, and the first capacitor C1 is in parallel with the power receiver represented by AC, and the second capacitor C2 is in parallel with the resistor R0 representing the battery, so it can be obtained that: V AC = Vc1, Vc1 = Vc2 + Vc3 (i.e., relationship 1).

[0100] In the second state of the second mode (i.e., mode 3), the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the second switch M2, the fourth switch M4, and the seventh switch M7 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 7 In mode 3 shown in, the first capacitor C1 and the resistor R0 representing the battery are connected in series and then in parallel with the power receiver represented by AC, and the second capacitor C2 and the third capacitor C3 are connected in series and then in parallel with the resistor R0 representing the battery, so V AC = Vc1 + Vb (i.e., relationship 2), Vc2 + Vc3 = Vb (i.e., relationship 3). Further, by combining the above relationship 1, relationship 2, and relationship 3, it can be obtained that V AC = 2Vb.

[0101] Therefore, in mode 1, the charging voltage Vb provided to the battery is approximately the voltage of the second capacitor C2; in mode 2, the charging voltage Vb provided to the battery is approximately the positive half-cycle signal of the AC signal; in mode 3, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal.

[0102] Combined with Figure 7As shown, in response to the positive half-cycle signal, the whole formed by the two bridge arms and the first processing unit works in modes 1, 2, 3, 2, and 1 in sequence. Among them, in the process of the signal in the positive half-cycle signal increasing from 0 to the maximum value of the signal, the whole formed by the two bridge arms and the first processing unit works in modes 1 and 2 in sequence; in the process of the signal in the positive half-cycle signal decreasing from the maximum value to 0, the whole formed by the two bridge arms and the first processing unit works in modes 2 and 1 in sequence. And the switching timing between each mode can be designed according to actual needs and is not specifically limited here.

[0103] For the negative half-cycle signal of the AC signal: The controller controls each switch so that the second processing unit works in the third state and the fourth state in sequence, realizing the switching of the second processing unit between the third state and the fourth state. And the controller controls each bridge arm switch so that the two bridge arms work in the first mode, the third mode, and the first mode in sequence, realizing the switching of each bridge arm between the first mode and the third mode. Among them, the first mode includes the third state, and the third mode includes: the third state and the fourth state.

[0104] In the third state (i.e., mode 4) of the first mode, the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are both turned on, and the first bridge arm switch Q1 and the third bridge arm switch Q3 are both turned off; the eighth switch M8, the tenth switch M10, the twelfth switch M12, and the thirteenth switch M13 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 7 connection relationship shown in mode 4 in

[0105] In the third state (i.e., mode 5) of the third mode, the second bridge arm switch Q2 and the third bridge arm switch Q3 are both turned on, and the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are both turned off; the eighth switch M8, the tenth switch M10, the twelfth switch M12, and the thirteenth switch M13 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 7 connection relationship shown in mode 5 in

[0106] In the fourth state (i.e., mode 6) of the third mode, the second bridge arm switch Q2 and the third bridge arm switch Q3 are both turned on, and the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are both turned off; the ninth switch M9, the eleventh switch M11, and the fourteenth switch M14 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 7The connection relationship shown in Mode 6 in

[0107] Similarly, for the second processing unit, on the basis that its working process is similar to that of the first processing unit, at Mode 4, the charging voltage Vb supplied to the battery is approximately the voltage of the fifth capacitor C5; at Mode 5, the charging voltage Vb supplied to the battery is approximately the positive signal corresponding to the negative half-cycle signal in the AC signal; at Mode 6, the charging voltage Vb supplied to the battery is approximately 1 / 2 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0108] Based on this, in combination with Figure 7 As shown, in response to the positive signal corresponding to the negative half-cycle signal, the whole formed by the two bridge arms and the second processing unit works in Mode 4, Mode 5, Mode 6, Mode 5, and Mode 4 in sequence. Among them, in the process of the signal in the positive signal increasing from 0 to the maximum value of the signal, the whole formed by the two bridge arms and the second processing unit works in Mode 4, Mode 5, and Mode 6 in sequence; in the process of the signal in the positive signal decreasing from the maximum value of the signal to 0, the whole formed by the two bridge arms and the second processing unit works in Mode 6, Mode 5, and Mode 4 in sequence. And the switching timing between each mode can be designed according to actual needs and is not specifically limited here.

[0109] It should be understood that the similarities between the wireless power structure circuit structure in this embodiment and the Figure 4 wireless power receiving circuit structure shown in the foregoing embodiment can be referred to the relevant introduction in the foregoing embodiment, and the repeated parts will not be elaborated.

[0110] Figure 8 Exemplarily shows a schematic structural diagram of a wireless power receiving circuit provided by an embodiment of the present application. Referring to Figure 8 As shown, the wireless power receiving circuit in this embodiment is basically similar to the Figure 4 wireless power receiving circuit structure shown in the foregoing embodiment, the difference being that the structures of the first processing unit and the second processing unit are both different. Exemplarily, referring to Figure 8As shown, the first processing unit may include: a first switch M1, a second switch M2, a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, a seventh switch M7, a first capacitor C1, a second capacitor C2, and a third capacitor C3; wherein, the control terminal of the first switch M1 is connected to the controller, the first terminal of the first switch M1 is respectively connected to the second terminal of the second switch M2 and the first terminal of the first capacitor C1, and the second terminal of the first switch M1 is respectively connected to the second terminal of the fourth switch M4 and the first terminal of the second capacitor C2; the control terminal of the second switch M2 is connected to the controller, the first terminal of the second switch M2 is connected to the ground terminal GND, and the second terminal of the second switch M2 is also respectively connected to the first terminal of the first capacitor C1 and the second terminal of the second capacitor C2; the control terminal of the third switch M3 is connected to the controller, the first terminal of the third switch M3 is respectively connected to the first terminal of the fourth switch M4, the second terminal of the fifth switch M5, and the first terminal of the third capacitor C3, and the second terminal of the third switch M3 is respectively connected to the second terminal of the first capacitor C1 and the first bridge arm; the control terminal of the fourth switch M4 is connected to the controller, the first terminal of the fourth switch M4 is also connected to the first terminal of the third capacitor C3, and the second terminal of the fourth switch M4 is also connected to the first terminal of the second capacitor C2; the control terminal of the fifth switch M5 is connected to the controller, the first terminal of the fifth switch M5 is respectively connected to the second terminal of the sixth switch M6 and the battery, and the second terminal of the fifth switch M5 is also connected to the first terminal of the third capacitor C3; the control terminal of the sixth switch M6 is connected to the controller, the first terminal of the sixth switch M6 is respectively connected to the second terminal of the seventh switch M7 and the second terminal of the third capacitor C3, and the second terminal of the sixth switch M6 is also connected to the battery; the control terminal of the seventh switch M7 is connected to the controller, the first terminal of the seventh switch M7 is also connected to the ground terminal GND, and the second terminal of the seventh switch M7 is also connected to the second terminal of the third capacitor C3.

[0111] The second processing unit may include: an eighth switch M8, a ninth switch M9, a tenth switch M10, an eleventh switch M11, a twelfth switch M12, a thirteenth switch M13, a fourteenth switch M14, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6; wherein, the control terminal of the eighth switch M8 is connected to the controller, the first terminal of the eighth switch M8 is respectively connected to the second terminal of the ninth switch M9 and the first terminal of the fourth capacitor C4, and the second terminal of the eighth switch M8 is respectively connected to the second terminal of the eleventh switch M11 and the first terminal of the fifth capacitor C5; the control terminal of the ninth switch M9 is connected to the controller, the first terminal of the ninth switch M9 is connected to the ground terminal GND, and the second terminal of the ninth switch M9 is also respectively connected to the first terminal of the fourth capacitor C4 and the second terminal of the fifth capacitor C5; the control terminal of the tenth switch M10 is connected to the controller, the first terminal of the tenth switch M10 is respectively connected to the first terminal of the eleventh switch M11, the second terminal of the twelfth switch M12, and the first terminal of the sixth capacitor C6, and the second terminal of the tenth switch M10 is respectively connected to the second terminal of the fourth capacitor C4 and the second bridge arm; the control terminal of the eleventh switch M11 is connected to the controller, the first terminal of the eleventh switch M11 is also connected to the first terminal of the sixth capacitor C6, and the second terminal of the eleventh switch M11 is also connected to the first terminal of the fifth capacitor C5; the control terminal of the twelfth switch M12 is connected to the controller, the first terminal of the twelfth switch M12 is respectively connected to the second terminal of the thirteenth switch M13 and the battery, and the second terminal of the twelfth switch M12 is also connected to the first terminal of the sixth capacitor C6; the control terminal of the thirteenth switch M13 is connected to the controller, the first terminal of the thirteenth switch M13 is respectively connected to the second terminal of the fourteenth switch M14 and the second terminal of the sixth capacitor C6, and the second terminal of the thirteenth switch M13 is also connected to the battery; the control terminal of the fourteenth switch M14 is connected to the controller, the first terminal of the fourteenth switch M14 is also connected to the ground terminal GND, and the second terminal of the fourteenth switch M14 is also connected to the second terminal of the sixth capacitor C6.

[0112] Based on Figure 8 the structure shown in

[0113] For the positive half-cycle signal of the AC signal: the controller controls each switch, so that the first processing unit works in the first state, the second state, and the first state in sequence, realizing the switching of the first processing unit between the first state and the second state. And the controller controls each bridge arm switch, so that the two bridge arms work in the first mode, the second mode, and the first mode in sequence, realizing the switching of each bridge arm between the first mode and the second mode. Among them, the first mode includes the first state, and the second mode includes the first state and the second state.

[0114] In the first state of the first mode (i.e., mode 1), the second leg switch Q2 and the fourth leg switch Q4 are both turned on, and the first leg switch Q1 and the third leg switch Q3 are both turned off; the second switch M2, the third switch M3, the fourth switch M4, and the sixth switch M6 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 9 In the shown mode 1, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the resistor R0 representing the battery are all disconnected from the power receiver represented by AC. The first capacitor C1 discharges to the resistor R0, and the third capacitor C3 is in series with the resistor R0 and then in parallel with the first capacitor C1, so Vb = Vc1 - Vc3.

[0115] In the first state of the second mode (i.e., mode 2), the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the second switch M2, the third switch M3, the fourth switch M4, and the sixth switch M6 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 9 In the shown mode 2, the first capacitor C1 and the second capacitor C2 are in parallel and then in series with the third capacitor C3 and the resistor R0 representing the battery, and the first capacitor C1 is in parallel with the power receiver represented by AC, so it can be obtained that: V AC = Vc1 = Vc2, Vc2 = Vc3 + Vb (i.e., relation 1).

[0116] In the second state of the second mode (i.e., mode 3), the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the first switch M1, the fifth switch M5, and the seventh switch M7 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 9 In the shown mode 3, the first capacitor C1 and the second capacitor C2 are in series and then in parallel with the power receiver represented by AC, so V AC = Vc1 + Vc2 (i.e., relation 2). Also, since the third capacitor C3 is in parallel with the resistor R0 representing the battery, it can be obtained that Vc3 = Vb (i.e., relation 3). Further, by combining the above relation 1, relation 2, and relation 3, it can be obtained that V AC = 4Vb.

[0117] Therefore, in mode 1, the charging voltage Vb provided to the battery is approximately the voltage of the first capacitor C1 minus the voltage of the third capacitor C3; in mode 2, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; in mode 3, the charging voltage Vb provided to the battery is approximately 1 / 4 of the positive half-cycle signal of the AC signal.

[0118] Combined with Figure 9As shown, in response to the positive half-cycle signal, the whole formed by the two bridge arms and the first processing unit works in modes 1, 2, 3, 2, and 1 in sequence. Among them, in the process of the signal in the positive half-cycle signal increasing from 0 to the maximum value of the signal, the whole formed by the two bridge arms and the first processing unit works in modes 1 and 2 in sequence; in the process of the signal in the positive half-cycle signal decreasing from the maximum value to 0, the whole formed by the two bridge arms and the first processing unit works in modes 2 and 1 in sequence. And the switching timing between each mode can be designed according to actual needs, and no specific limitation is made here.

[0119] For the negative half-cycle signal of the AC signal: The controller controls each switch so that the second processing unit works in the third state and the fourth state in sequence, realizing the switching of the second processing unit between the third state and the fourth state. And the controller controls each bridge arm switch so that the two bridge arms work in the first mode, the third mode, and the first mode in sequence, realizing the switching of each bridge arm between the first mode and the third mode. Among them, the first mode includes the third state, and the third mode includes: the third state and the fourth state.

[0120] In the third state (i.e., mode 4) of the first mode, the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are both turned on, and the first bridge arm switch Q1 and the third bridge arm switch Q3 are both turned off; the ninth switch M9, the tenth switch M10, the eleventh switch M11, and the thirteenth switch M13 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 9 connection relationship shown in mode 4 in

[0121] In the third state (i.e., mode 5) of the third mode, the second bridge arm switch Q2 and the third bridge arm switch Q3 are both turned on, and the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are both turned off; the ninth switch M9, the tenth switch M10, the eleventh switch M11, and the thirteenth switch M13 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 9 connection relationship shown in mode 5 in

[0122] In the fourth state (i.e., mode 6) of the third mode, the second bridge arm switch Q2 and the third bridge arm switch Q3 are both turned on, and the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are both turned off; the eighth switch M8, the twelfth switch M12, and the fourteenth switch M14 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery present the Figure 9The connection relationship shown in Mode 6 in

[0123] Similarly, for the second processing unit, on the basis that the working process is similar to that of the first processing unit, at Mode 4, the charging voltage Vb provided to the battery is approximately the voltage of the fourth capacitor C4 minus the voltage of the sixth capacitor C6; at Mode 5, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive signal corresponding to the negative half-cycle signal in the AC signal; at Mode 6, the charging voltage Vb provided to the battery is approximately 1 / 4 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0124] Based on this, combined with Figure 9 As shown, in response to the positive signal corresponding to the negative half-cycle signal, the whole formed by the two bridge arms and the second processing unit works in Mode 4, Mode 5, Mode 6, Mode 5, and Mode 4 in sequence. Among them, in the process of the signal in the positive signal increasing from 0 to the maximum value of the signal, the whole formed by the two bridge arms and the second processing unit works in Mode 4, Mode 5, and Mode 6 in sequence; in the process of the signal in the positive signal decreasing from the maximum value of the signal to 0, the whole formed by the two bridge arms and the second processing unit works in Mode 6, Mode 5, and Mode 4 in sequence. And the switching timing between each mode can be designed according to actual needs and is not specifically limited here.

[0125] It should be understood that the similarities between the wireless power structure circuit structure in this embodiment and the Figure 4 shown wireless power receiving circuit structure in the foregoing embodiment can be referred to the relevant introduction in the foregoing embodiment, and the repeated parts will not be elaborated.

[0126] Figure 10 Exemplarily shows a schematic structural diagram of a wireless power receiving circuit provided by an embodiment of the present application. Referring to Figure 10 As shown, the wireless power receiving circuit in this embodiment is basically similar to the Figure 4 shown wireless power receiving circuit structure in the foregoing embodiment, except that the structures of the first processing unit and the second processing unit are different. Exemplarily, referring to Figure 10As shown in the figure, the first processing unit may include: a first switch M1, a second switch M2, a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, a seventh switch M7, an eighth switch M8, a ninth switch M9, a first capacitor C1, a second capacitor C2, and a third capacitor C3; wherein, the control terminal of the first switch M1 is connected to the controller, the first terminal of the first switch M1 is respectively connected to the first terminal of the first capacitor C1 and the first bridge arm, and the second terminal of the first switch M1 is respectively connected to the second terminal of the fourth switch M4, the second terminal of the seventh switch M7, the second terminal of the ninth switch M9, and the battery; the control terminal of the second switch M2 is connected to the controller, the first terminal of the second switch M2 is connected to the ground terminal GND, and the second terminal of the second switch M2 is respectively connected to the second terminal of the first capacitor C1 and the second terminal of the third switch M3; the control terminal of the third switch M3 is connected to the controller, the first terminal of the third switch M3 is respectively connected to the first terminal of the fourth switch M4 and the first terminal of the second capacitor C2, and the second terminal of the third switch M3 is further connected to the second terminal of the first capacitor C1; the control terminal of the fourth switch M4 is connected to the controller, the first terminal of the fourth switch M4 is further connected to the first terminal of the second capacitor C2, and the second terminal of the fourth switch M4 is further connected to the battery; the control terminal of the fifth switch M5 is connected to the controller, the first terminal of the fifth switch M5 is connected to the ground terminal GND, and the second terminal of the fifth switch M5 is respectively connected to the second terminal of the second capacitor C2 and the second terminal of the sixth switch M6; the control terminal of the sixth switch M6 is connected to the controller, the first terminal of the sixth switch M6 is respectively connected to the first terminal of the third capacitor C3 and the first terminal of the seventh switch M7, and the second terminal of the sixth switch M6 is further connected to the second terminal of the second capacitor C2; the control terminal of the seventh switch M7 is connected to the controller, the first terminal of the seventh switch M7 is further connected to the first terminal of the third capacitor C3, and the second terminal of the seventh switch M7 is further connected to the battery; the control terminal of the eighth switch M8 is connected to the controller, the first terminal of the eighth switch M8 is connected to the ground terminal GND, and the second terminal of the eighth switch M8 is respectively connected to the second terminal of the third capacitor C3 and the first terminal of the ninth switch M9; the control terminal of the ninth switch M9 is connected to the controller, the first terminal of the ninth switch M9 is further connected to the second terminal of the third capacitor C3, and the second terminal of the ninth switch M9 is further connected to the battery.

[0127] The second processing unit may include: a tenth switch M10, an eleventh switch M11, a twelfth switch M12, a thirteenth switch M13, a fourteenth switch M14, a fifteenth switch M15, a sixteenth switch M16, a seventeenth switch M17, an eighteenth switch M18, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6; wherein, the control end of the tenth switch M10 is connected to the controller, the first end of the tenth switch M10 is respectively connected to the first end of the fourth capacitor C4 and the second bridge arm, and the second end of the tenth switch M10 is respectively connected to the second end of the thirteenth switch M13, the second end of the sixteenth switch M16, the second end of the eighteenth switch M18, and the battery; the control end of the eleventh switch M11 is connected to the controller, the first end of the eleventh switch M11 is connected to the ground terminal GND, and the second end of the eleventh switch M11 is respectively connected to the second end of the fourth capacitor C4 and the second end of the twelfth switch M12; the control end of the twelfth switch M12 is connected to the controller, the first end of the twelfth switch M12 is respectively connected to the first end of the thirteenth switch M13 and the first end of the fifth capacitor C5, and the second end of the twelfth switch M12 is further connected to the second end of the fourth capacitor C4; the control end of the thirteenth switch M13 is connected to the controller, the first end of the thirteenth switch M13 is further connected to the first end of the fifth capacitor C5, and the second end of the thirteenth switch M13 is further connected to the battery; the control end of the fourteenth switch M14 is connected to the controller, the first end of the fourteenth switch M14 is connected to the ground terminal GND, and the second end of the fourteenth switch M14 is respectively connected to the second end of the fifth capacitor C5 and the second end of the fifteenth switch M15; the control end of the fifteenth switch M15 is connected to the controller, the first end of the fifteenth switch M15 is respectively connected to the first end of the sixth capacitor C6 and the first end of the sixteenth switch M16, and the second end of the fifteenth switch M15 is further connected to the second end of the fifth capacitor C5; the control end of the sixteenth switch M16 is connected to the controller, the first end of the sixteenth switch M16 is further connected to the first end of the sixth capacitor C6, and the second end of the sixteenth switch M16 is further connected to the battery; the control end of the seventeenth switch M17 is connected to the controller, the first end of the seventeenth switch M17 is connected to the ground terminal GND, and the second end of the seventeenth switch M17 is respectively connected to the second end of the sixth capacitor C6 and the first end of the eighteenth switch M18; the control end of the eighteenth switch M18 is connected to the controller, the first end of the eighteenth switch M18 is further connected to the second end of the sixth capacitor C6, and the second end of the eighteenth switch M18 is further connected to the battery.

[0128] Based on Figure 10 the structure shown in

[0129] For the positive half-cycle signal of the AC signal: The controller controls each switch so that the first processing unit operates in the first state, the second state, the third state, the fourth state, the third state, the second state, and the first state in sequence, realizing the switching of the first processing unit among the first state, the second state, the third state, and the fourth state. And the controller controls each arm switch so that the two arms operate in the first mode, the second mode, and the first mode in sequence, realizing the switching of each arm between the first mode and the second mode. Among them, the first mode includes the first state, and the second mode includes the first state, the second state, the third state, and the fourth state.

[0130] In the first state (i.e., mode 1) of the first mode, the second arm switch Q2 and the fourth arm switch Q4 are both turned on, and the first arm switch Q1 and the third arm switch Q3 are both turned off; the first switch M1, the second switch M2, the fourth switch M4, the fifth switch M5, the seventh switch M7, and the eighth switch M8 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 11 As shown in mode 1, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the resistor R0 representing the battery are all disconnected from the power receiver represented by AC, and the first capacitor C1, the second capacitor C2, the third capacitor C3, and the resistor R0 representing the battery are connected in parallel, so Vb = Vc2 = Vc1 = Vc3.

[0131] In the first state (i.e., mode 2) of the second mode, the first arm switch Q1 and the fourth arm switch Q4 are both turned on, and the second arm switch Q2 and the third arm switch Q3 are both turned off; the first switch M1, the second switch M2, the fourth switch M4, the fifth switch M5, the seventh switch M7, and the eighth switch M8 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 11 As shown in mode 2, the first capacitor C1, the second capacitor C2, the third capacitor C3, the resistor R0 representing the battery, and the power receiver represented by AC are all connected in parallel, so it can be obtained that V AC = Vc1 = Vc2 = Vc3 = Vb (i.e., relationship 1).

[0132] In the second state (i.e., mode 3) of the second mode, the first arm switch Q1 and the fourth arm switch Q4 are both turned on, and the second arm switch Q2 and the third arm switch Q3 are both turned off; the third switch M3, the fourth switch M4, the fifth switch M5, the seventh switch M7, and the eighth switch M8 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 11 As shown in mode 3, the first capacitor C1 and the second capacitor C2 are connected in series and then connected in parallel with the power receiver represented by AC, so it can be obtained that V AC = Vc1 + Vc2. Combining the above relationship 1, it can be obtained that V AC= 2Vb.

[0133] In the third state (i.e., mode 4) of the second mode, the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the third switch M3, the sixth switch M6, the seventh switch M7, and the eighth switch M8 are all turned on, and all other switches in the first processing unit are turned off. At this time, combined with Figure 11 the shown mode 4, the first capacitor C1, the second capacitor C2, and the third capacitor C3 are connected in series and then connected in parallel with the power receiver represented by AC. Therefore, it can be obtained that V AC = Vc1 + Vc2 + Vc3. Combining the above relationship 1, it can be obtained that V AC = 3Vb.

[0134] In the fourth state (i.e., mode 5) of the second mode, the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the third switch M3, the sixth switch M6, and the ninth switch M9 are all turned on, and all other switches in the first processing unit are turned off. At this time, combined with Figure 11 the shown mode 5, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the resistor R0 representing the battery are connected in series and then connected in parallel with the power receiver represented by AC. Therefore, it can be obtained that V AC = Vc1 + Vc2 + Vc3 + Vb. Combining the above relationship 1, it can be obtained that V AC = 4Vb.

[0135] Therefore, in mode 1, the charging voltage Vb provided to the battery is approximately the voltage of the first capacitor C1 or the second capacitor C2 or the third capacitor C3; in mode 2, the charging voltage Vb provided to the battery is approximately the positive half-cycle signal of the AC signal; in mode 3, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; in mode 4, the charging voltage Vb provided to the battery is approximately 1 / 3 of the positive half-cycle signal of the AC signal; in mode 5, the charging voltage Vb provided to the battery is approximately 1 / 4 of the positive half-cycle signal of the AC signal.

[0136] Combined with Figure 11As shown, in response to the positive half-cycle signal, the whole formed by the two bridge arms and the first processing unit works in modes 1, 2, 3, 4, 5, 4, 3, 2, 1 in sequence. Among them, in the process of the signal in the positive half-cycle signal increasing from 0 to the maximum value of the signal, the whole formed by the two bridge arms and the first processing unit works in modes 1, 2, 3, 4, 5 in sequence; in the process of the signal in the positive half-cycle signal decreasing from the maximum value of the signal to 0, the whole formed by the two bridge arms and the first processing unit works in modes 5, 4, 3, 2, 1 in sequence. And the switching timing between each mode can be designed according to actual needs, and no specific limitation is made here.

[0137] For the negative half-cycle signal of the AC signal: The controller controls each switch so that the second processing unit works in the fifth state, the sixth state, the seventh state, the eighth state, the seventh state, the sixth state, the fifth state in sequence, realizing the switching of the second processing unit between the fifth state, the sixth state, the seventh state, and the eighth state. And the controller controls each bridge arm switch so that the two bridge arms work in the first mode, the third mode, the first mode in sequence, realizing the switching of each bridge arm between the first mode and the third mode. Among them, the first mode includes the fifth state, and the third mode includes: the fifth state, the sixth state, the seventh state, the eighth state.

[0138] In the fifth state (i.e., mode 6) of the first mode, the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are both turned on, and the first bridge arm switch Q1 and the third bridge arm switch Q3 are both turned off; the tenth switch M10, the eleventh switch M11, the thirteenth switch M13, the fourteenth switch M14, the sixteenth switch M16, and the seventeenth switch M17 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 used to represent the battery present the Figure 11 connection relationship shown in mode 6 in

[0139] In the fifth state (i.e., mode 7) of the third mode, the second bridge arm switch Q2 and the third bridge arm switch Q3 are both turned on, and the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are both turned off; the tenth switch M10, the eleventh switch M11, the thirteenth switch M13, the fourteenth switch M14, the sixteenth switch M16, and the seventeenth switch M17 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 used to represent the battery present the Figure 11 connection relationship shown in mode 7 in

[0140] In the sixth state (i.e., mode 8) of the third mode, the second leg switch Q2 and the third leg switch Q3 are both turned on, and the first leg switch Q1 and the fourth leg switch Q4 are both turned off; the twelfth switch M12, the thirteenth switch M13, the fourteenth switch M14, the sixteenth switch M16, and the seventeenth switch M17 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery exhibit Figure 11 the connection relationship shown in mode 8 in

[0141] In the seventh state (i.e., mode 9) of the third mode, the second leg switch Q2 and the third leg switch Q3 are both turned on, and the first leg switch Q1 and the fourth leg switch Q4 are both turned off; the twelfth switch M12, the fifteenth switch M15, the sixteenth switch M16, and the seventeenth switch M17 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery exhibit Figure 11 the connection relationship shown in mode 9 in

[0142] In the eighth state (i.e., mode 10) of the third mode, the second leg switch Q2 and the third leg switch Q3 are both turned on, and the first leg switch Q1 and the fourth leg switch Q4 are both turned off; the twelfth switch M12, the fifteenth switch M15, and the eighteenth switch M18 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the resistor R0 representing the battery exhibit Figure 11 the connection relationship shown in mode 10 in

[0143] Similarly, for the second processing unit, on the basis that the working process is similar to that of the first processing unit, in mode 6, the charging voltage Vb provided to the battery is approximately the voltage of the fourth capacitor C4 or the fifth capacitor C5 or the sixth capacitor C6; in mode 7, the charging voltage Vb provided to the battery is approximately the positive signal corresponding to the negative half-cycle signal in the AC signal; in mode 8, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive signal corresponding to the negative half-cycle signal in the AC signal; in mode 9, the charging voltage Vb provided to the battery is approximately 1 / 3 of the positive signal corresponding to the negative half-cycle signal in the AC signal; in mode 10, the charging voltage Vb provided to the battery is approximately 1 / 4 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0144] Based on this, combined with Figure 11As shown, when responding to the positive signal corresponding to the negative half-cycle signal, the whole formed by the two bridge arms and the second processing unit works in modes 6, 7, 8, 9, 10, 9, 8, 7, 6 in sequence. Among them, during the process of the signal in the positive signal increasing from 0 to the maximum value of the signal, the whole formed by the two bridge arms and the second processing unit works in modes 6, 7, 8, 9, 10 in sequence; during the process of the signal in the positive signal decreasing from the maximum value of the signal to 0, the whole formed by the two bridge arms and the second processing unit works in modes 10, 9, 8, 7, 6 in sequence. Moreover, the switching timing between each mode can be designed according to actual needs, and no specific limitation is made here.

[0145] It should be understood that the similarities between the wireless power structure circuit in this embodiment and the Figure 4 wireless power receiving circuit structure shown in the foregoing embodiment can be referred to the relevant introduction in the foregoing embodiment, and the repeated parts will not be elaborated.

[0146] Figure 12 Exemplarily shows a schematic structural diagram of a wireless power receiving circuit provided by an embodiment of the present application. Referring to Figure 12 as shown, the wireless power receiving circuit in this embodiment is basically similar to the Figure 4 wireless power receiving circuit structure shown in the foregoing embodiment, except that the structures of the first processing unit and the second processing unit are different. Exemplarily, referring to Figure 12As shown, the first processing unit may include: a first switch M1, a second switch M2, a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, a first capacitor C1, and a second capacitor C2; wherein, the control end of the first switch M1 is connected to the controller, the first end of the first switch M1 is respectively connected to the second end of the second switch M2 and the first end of the first capacitor C1, and the second end of the first switch M1 is respectively connected to the second end of the fourth switch M4 and the first end of the second capacitor C2; the control end of the second switch M2 is connected to the controller, the first end of the second switch M2 is connected to the ground terminal GND, and the second end of the second switch M2 is further connected to the first end of the first capacitor C1; the control end of the third switch M3 is connected to the controller, the first end of the third switch M3 is respectively connected to the first end of the fourth switch M4, the second end of the fifth switch M5, and the battery, and the second end of the third switch M3 is respectively connected to the second end of the first capacitor C1 and the first bridge arm; the control end of the fourth switch M4 is connected to the controller, the first end of the fourth switch M4 is further connected to the battery, and the second end of the fourth switch M4 is further connected to the first end of the second capacitor C2; the control end of the fifth switch M5 is connected to the controller, the first end of the fifth switch M5 is respectively connected to the second end of the sixth switch M6 and the second end of the second capacitor C2, and the second end of the fifth switch M5 is further connected to the battery; the control end of the sixth switch M6 is connected to the controller, the first end of the sixth switch M6 is connected to the ground terminal GND, and the second end of the sixth switch M6 is further connected to the second end of the second capacitor C2.

[0147] The second processing unit may include: a seventh switch M7, an eighth switch M8, a ninth switch M9, a tenth switch M10, an eleventh switch M11, a twelfth switch M12, a third capacitor C3, and a fourth capacitor C4; wherein, the control terminal of the seventh switch M7 is connected to the controller, the first terminal of the seventh switch M7 is respectively connected to the second terminal of the eighth switch M8 and the first terminal of the third capacitor C3, and the second terminal of the seventh switch M7 is respectively connected to the second terminal of the tenth switch M10 and the first terminal of the fourth capacitor C4; the control terminal of the eighth switch M8 is connected to the controller, the first terminal of the eighth switch M8 is connected to the ground terminal GND, and the second terminal of the eighth switch M8 is further connected to the first terminal of the third capacitor C3; the control terminal of the ninth switch M9 is connected to the controller, the first terminal of the ninth switch M9 is respectively connected to the first terminal of the tenth switch M10, the second terminal of the eleventh switch M11, and the battery, and the second terminal of the ninth switch M9 is respectively connected to the second terminal of the third capacitor C3 and the second bridge arm; the control terminal of the tenth switch M10 is connected to the controller, the first terminal of the tenth switch M10 is further connected to the battery, and the second terminal of the tenth switch M10 is further connected to the first terminal of the fourth capacitor C4; the control terminal of the eleventh switch M11 is connected to the controller, the first terminal of the eleventh switch M11 is respectively connected to the second terminal of the twelfth switch M12 and the second terminal of the fourth capacitor C4, and the second terminal of the eleventh switch M11 is further connected to the battery; the control terminal of the twelfth switch M12 is connected to the controller, the first terminal of the twelfth switch M12 is connected to the ground terminal GND, and the second terminal of the twelfth switch M12 is further connected to the second terminal of the fourth capacitor C4.

[0148] Based on Figure 12 the structure shown in

[0149] For the positive half-cycle signal of the AC signal: the controller controls each switch so that the first processing unit works in the first state, the second state, the third state, the second state, and the first state in sequence, realizing the switching of the first processing unit between the first state, the second state, and the third state. And the controller controls each bridge arm switch so that the two bridge arms work in the first mode, the second mode, and the first mode in sequence, realizing the switching of each bridge arm between the first mode and the second mode. Among them, the first mode includes the first state, and the second mode includes the first state, the second state, and the third state.

[0150] In the first state (i.e., mode 1) of the first mode, the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are both turned on, and the first bridge arm switch Q1 and the third bridge arm switch Q3 are both turned off; the second switch M2, the third switch M3, the fourth switch M4, and the sixth switch M6 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 13In the shown Mode 1, the first capacitor C1, the second capacitor C2, and the third capacitor C3 are all disconnected from the power receiver represented by AC. The first capacitor C1, the second capacitor C2, and the resistor R0 representing the battery are in parallel, so Vb = Vc1 = Vc2.

[0151] In the first state of the second mode (i.e., Mode 2), the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the second switch M2, the third switch M3, the fourth switch M4, and the sixth switch M6 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 13 the shown Mode 2, the first capacitor C1, the second capacitor C2, the resistor R0 representing the battery, and the power receiver represented by AC are all in parallel, so it can be obtained that V AC = Vc1 = Vc2 = Vb (i.e., Relationship 1).

[0152] In the second state of the second mode (i.e., Mode 3), the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the first switch M1, the fourth switch M4, and the sixth switch M6 are all turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 13 the shown Mode 3, the first capacitor C1 and the second capacitor C2 are in series and then in parallel with the power receiver represented by AC, so it can be obtained that V AC = Vc1 + Vc2. Combining the above Relationship 1, it can be obtained that V AC = 2Vb.

[0153] In the third state of the second mode (i.e., Mode 4), the first leg switch Q1 and the fourth leg switch Q4 are both turned on, and the second leg switch Q2 and the third leg switch Q3 are both turned off; the first switch M1 and the fifth switch M5 are both turned on, and the other switches in the first processing unit are all turned off. At this time, combined with Figure 13 the shown Mode 4, the first capacitor C1, the second capacitor C2, and the resistor R0 representing the battery are in series and then in parallel with the power receiver represented by AC, so it can be obtained that V AC = Vc1 + Vc2 + Vb. Combining the above Relationship 1, it can be obtained that V AC = 3Vb.

[0154] Therefore, in Mode 1, the charging voltage Vb provided to the battery is approximately the voltage of the first capacitor C1 or the second capacitor C2; in Mode 2, the charging voltage Vb provided to the battery is approximately the positive half-cycle signal of the AC signal; in Mode 3, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; in Mode 4, the charging voltage Vb provided to the battery is approximately 1 / 3 of the positive half-cycle signal of the AC signal.

[0155] Combined Figure 13 As shown, in response to the positive half - cycle signal, the whole composed of two bridge arms and the first processing unit works in modes 1, 2, 3, 4, 3, 2, 1 in sequence. Among them, in the process of the signal in the positive half - cycle signal increasing from 0 to the maximum value of the signal, the whole composed of two bridge arms and the first processing unit works in modes 1, 2, 3, 4 in sequence; in the process of the signal in the positive half - cycle signal decreasing from the maximum value to 0, the whole composed of two bridge arms and the first processing unit works in modes 4, 3, 2, 1 in sequence. And the switching timing between each mode can be designed according to actual needs and is not specifically limited here.

[0156] For the negative half - cycle signal of the AC signal: The controller controls each switch so that the second processing unit works in the fourth state, the fifth state, the sixth state, the fifth state, the fourth state in sequence, realizing the switching of the second processing unit between the fourth state, the fifth state, and the sixth state. And the controller controls each bridge arm switch so that the two bridge arms work in the first mode, the third mode, the first mode in sequence, realizing the switching of each bridge arm between the first mode and the third mode. Among them, the first mode includes the fourth state, and the third mode includes: the fourth state, the fifth state, and the sixth state.

[0157] In the fourth state (i.e., mode 5) of the first mode, the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are both turned on, and the first bridge arm switch Q1 and the third bridge arm switch Q3 are both turned off; the eighth switch M8, the ninth switch M9, the tenth switch M10, and the twelfth switch M12 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the third capacitor C3, the fourth capacitor C4, and the resistor R0 representing the battery present the Figure 13 connection relationship shown in mode 5 in

[0158] In the fourth state (i.e., mode 6) of the third mode, the second bridge arm switch Q2 and the third bridge arm switch Q3 are both turned on, and the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are both turned off; the eighth switch M8, the ninth switch M9, the tenth switch M10, and the twelfth switch M12 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the third capacitor C3, the fourth capacitor C4, and the resistor R0 representing the battery present the Figure 13 connection relationship shown in mode 6 in

[0159] In the fifth state (i.e., mode 7) of the third mode, the second leg switch Q2 and the third leg switch Q3 are both turned on, and the first leg switch Q1 and the fourth leg switch Q4 are both turned off; the seventh switch M7, the tenth switch M10, and the twelfth switch M12 are all turned on, and the other switches in the second processing unit are all turned off; at this time, the third capacitor C3, the fourth capacitor C4, and the resistor R0 representing the battery exhibit Figure 13 the connection relationship shown in mode 7 in

[0160] In the sixth state (i.e., mode 8) of the third mode, the second leg switch Q2 and the third leg switch Q3 are both turned on, and the first leg switch Q1 and the fourth leg switch Q4 are both turned off; the seventh switch M7 and the eleventh switch M11 are both turned on, and the other switches in the second processing unit are all turned off; at this time, the third capacitor C3, the fourth capacitor C4, and the resistor R0 representing the battery exhibit Figure 13 the connection relationship shown in mode 8 in

[0161] Similarly, for the second processing unit, on the basis that the working process is similar to that of the first processing unit, in mode 5, the charging voltage Vb provided to the battery is approximately the voltage of the third capacitor C3 or the fourth capacitor C4; in mode 6, the charging voltage Vb provided to the battery is approximately the positive signal corresponding to the negative half-cycle signal in the AC signal; in mode 7, the charging voltage Vb provided to the battery is approximately 1 / 2 of the positive signal corresponding to the negative half-cycle signal in the AC signal; in mode 8, the charging voltage Vb provided to the battery is approximately 1 / 3 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0162] Based on this, combined with Figure 13 shown, in response to the positive signal corresponding to the negative half-cycle signal, the overall composed of two legs and the second processing unit works in mode 5, mode 6, mode 7, mode 8, mode 7, mode 6, mode 5 in sequence. Among them, in the process of the signal in the positive signal increasing from 0 to the maximum value of the signal, the overall composed of two legs and the second processing unit works in mode 5, mode 6, mode 7, mode 8 in sequence; in the process of the signal in the positive signal decreasing from the maximum value of the signal to 0, the overall composed of two legs and the second processing unit works in mode 8, mode 7, mode 6, mode 5 in sequence. And the switching timing between each mode can be designed according to actual needs and is not specifically limited here.

[0163] It should be understood that the similarities between the wireless power structure circuit in this embodiment and the Figure 4 wireless power receiving circuit structure shown in the foregoing embodiment can be referred to the relevant introduction in the foregoing embodiment, and the repeated parts will not be elaborated.

[0164] Figure 14An exemplary structural schematic diagram of a wireless power receiving circuit provided by an embodiment of the present application is shown. Refer to Figure 14 As shown, the wireless power receiving circuit in this embodiment is basically similar to the Figure 3 wireless power receiving circuit shown in the foregoing embodiment. The difference is that the DCDC converter further includes a first switch unit and a second switch unit. Exemplarily, refer to Figure 14 As shown, the DCDC converter may further include a first switch unit and a second switch unit. The DCDC converter further includes a wired power input terminal (i.e., node P0). The first switch unit is respectively connected to the first processing unit, the wired power input terminal, and the controller. The second switch unit is respectively connected to the second processing unit, the wired power input terminal, and the controller; Figure 14 The controller is not shown in Figure 14 , so

[0165] the connection relationship between each switch unit and the controller is not shown either. At this time, the controller is further configured to: in response to an AC signal, control the first switch unit to disconnect the wired power input terminal from the first processing unit, and control the second switch unit to disconnect the wired power input terminal from the second processing unit; the first arm is further connected to the first switch unit, and the second arm is further connected to the second switch unit. That is to say, node P3 can be regarded as the node between the first switch unit and the first processing unit, and node P4 can be regarded as the node between the second switch unit and the second processing unit. Therefore, node P3 and node P4 can be regarded as the center taps of the DCDC converter, node P0 can be regarded as the input terminal of the DCDC converter, and the first arm and the second arm are respectively connected to different center taps of the DCDC converter, so that the cooperation between the two arms and the DCDC converter can be realized, the loss generated during charging can be reduced, and the charging efficiency can be improved. Moreover, the first switch unit and the second switch unit can control whether the electric energy input from the wired power input terminal is transmitted to the first processing unit and the second processing unit. Furthermore, when charging the battery wirelessly, the first switch unit and the second switch unit can be controlled to be both disconnected, so as to avoid the interference caused by the electric energy input from the wired power input terminal during wireless charging, thereby improving the reliability and safety of wireless charging.

[0165] Among them, the first switch unit may include a first control switch T1. The control electrode of the first control switch T1 is connected to the controller. The first pole of the first control switch T1 is respectively connected to the first bridge arm and the first processing unit. The second pole of the first control switch T1 is connected to the wired power input terminal. The second switch unit may include a second control switch T2. The control electrode of the second control switch T2 is connected to the controller. The first pole of the second control switch T2 is respectively connected to the second bridge arm and the second processing unit. The second pole of the second control switch T2 is connected to the wired power input terminal. In this way, the controller can control whether the first pole and the second pole of the first control switch T1 are conducted, and further control whether the wired power input terminal and the first processing unit are conducted. Similarly, the controller can control whether the first pole and the second pole of the second control switch T2 are conducted, and further control whether the wired power input terminal and the second processing unit are conducted, so as to realize the control of the first switch unit and the second switch unit by the controller. It should be understood that the control switch may be, but is not limited to, a switching device with a control terminal such as a field effect transistor or a triode, and can be specifically designed according to actual needs, and is not specifically limited herein. Among them, taking the control switch as a field effect transistor as an example, the control electrode is used as the gate, the first pole is used as the source, and the second pole is used as the drain.

[0166] Continue to refer to Figure 14 As shown, the wireless power receiving circuit may further include an overvoltage protector. The overvoltage protector is respectively connected to the wired power input terminal and the charging interface. The overvoltage protector is configured to: in response to the DC signal transmitted through the charging interface being greater than a preset value, cut off the connection path between the wired power input terminal and the charging interface; in response to the DC signal transmitted through the charging interface not being greater than the preset value, conduct the wired power input terminal and the charging interface. At this time, the controller is further configured to: in response to the DC signal, control the first switch unit to conduct the wired power input terminal and the first processing unit, so that the first processing unit charges the battery according to the DC signal; or in response to the DC signal, control the second switch unit to conduct the wired power input terminal and the second processing unit, so that the second processing unit charges the battery according to the DC signal.

[0167] That is to say, the wireless power receiving circuit can not only process the electric energy during wireless charging to realize wireless charging of the battery, but also process the electric energy during wired charging to realize wired charging of the battery. This enables the wireless power receiving circuit to not only achieve wireless charging but also achieve wired charging, expanding the function of the wireless power receiving circuit and avoiding charging the battery through wired charging when wireless charging is abnormal, thereby improving the charging reliability. Moreover, through two bridge arms and a DCDC converter, it is possible to not only process the electric energy during wireless charging but also process the electric energy during wired charging, realizing the integration of wireless charging and wired charging, simplifying the circuit structure and reducing the manufacturing cost.

[0168] It should be understood that for the similarities between the wireless power structure circuit in this embodiment and the wireless power receiving circuit structure shown in the foregoing embodiment, reference may be made to the relevant descriptions in the foregoing embodiment, and repeated parts will not be elaborated. Figure 3 It should be understood that for the similarities between the wireless power structure circuit in this embodiment and the wireless power receiving circuit structure shown in the foregoing embodiment, reference may be made to the relevant descriptions in the foregoing embodiment, and repeated parts will not be elaborated.

[0169] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A wireless power receiving circuit, characterized in that, Comprising: A power receiver, a first bridge arm, a second bridge arm, a DCDC converter, and a controller; the DCDC converter includes a first processing unit and a second processing unit; The power receiver is connected to the midpoint of the first bridge arm, and the power receiver is also connected to the midpoint of the second bridge arm. The power receiver is configured to: in response to wireless power transmission, output an AC signal to the midpoints of the first bridge arm and the second bridge arm; The first bridge arm is also respectively connected to the first processing unit, the ground terminal, and the controller, and the second bridge arm is also respectively connected to the second processing unit, the ground terminal, and the controller. The controller is configured to: in response to the positive half-cycle signal of the AC signal, control the first bridge arm and the second bridge arm to output the positive half-cycle signal to the first processing unit; in response to the negative half-cycle signal of the AC signal, control the first bridge arm and the second bridge arm to output the positive signal corresponding to the negative half-cycle signal to the second processing unit; The output terminal of the first processing unit is used to be connected to a battery, and the first processing unit is configured to: charge the battery in response to the positive half-cycle signal; The output terminal of the second processing unit is used to be connected to the battery, and the second processing unit is configured to: charge the battery in response to the positive signal; 2. The wireless power receiving circuit according to claim 1, wherein The DCDC converter further includes a first switching unit and a second switching unit. The DCDC converter further includes a wired power input terminal. The first switching unit is respectively connected to the first processing unit, the wired power input terminal, and the controller, and the second switching unit is respectively connected to the second processing unit, the wired power input terminal, and the controller; The controller is further configured to: in response to the AC signal, control the first switching unit to disconnect the wired power input terminal from the first processing unit, and control the second switching unit to disconnect the wired power input terminal from the second processing unit; The first bridge arm is also connected to the first switching unit, and the second bridge arm is also connected to the second switching unit.

3. The wireless power receiving circuit according to claim 1 or 2, characterized in that, The first bridge arm includes: a first bridge arm switch and a second bridge arm switch. The control pole of the first bridge arm switch is connected to the controller. The first pole of the first bridge arm switch is respectively connected to the positive pole of the power receiver and the second pole of the second bridge arm switch. The second pole of the first bridge arm switch is connected to the first processing unit. The control pole of the second bridge arm switch is connected to the controller. The first pole of the second bridge arm switch is connected to the ground terminal, and the second pole of the second bridge arm switch is also connected to the positive pole of the power receiver; The second bridge arm includes: a third bridge arm switch and a fourth bridge arm switch. The control electrode of the third bridge arm switch is connected to the controller. The first electrode of the third bridge arm switch is respectively connected to the negative electrode of the power receiver and the second electrode of the fourth bridge arm switch. The second electrode of the third bridge arm switch is connected to the second processing unit. The control electrode of the fourth bridge arm switch is connected to the controller. The first electrode of the fourth bridge arm switch is connected to the ground terminal. The second electrode of the fourth bridge arm switch is also connected to the negative electrode of the power receiver; The controller is configured to: in response to the positive half-cycle signal, control the first bridge arm and the second bridge arm to switch between a first mode and a second mode; in response to the positive signal, control the first bridge arm and the second bridge arm to switch between the first mode and a third mode; Wherein, the first mode includes: a mode in which both the second bridge arm switch and the fourth bridge arm switch are turned on. The second mode includes: a mode in which both the first bridge arm switch and the fourth bridge arm switch are turned on. The third mode includes: a mode in which both the second bridge arm switch and the third bridge arm switch are turned on.

4. The wireless power receiving circuit according to claim 3, wherein, The first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; The control terminal of the first switch is connected to the controller. The first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor. The second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; The control terminal of the second switch is connected to the controller. The first terminal of the second switch is connected to the ground terminal. The second terminal of the second switch is also connected to the first terminal of the first capacitor; The control terminal of the third switch is connected to the controller. The first terminal of the third switch is respectively connected to the second terminal of the seventh switch and the first terminal of the third capacitor. The second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first bridge arm; The control terminal of the fourth switch is connected to the controller. The first terminal of the fourth switch is respectively connected to the second terminal of the fifth switch, the battery, the first terminal of the seventh switch, and the second terminal of the eighth switch. The second terminal of the fourth switch is also connected to the first terminal of the second capacitor; The control terminal of the fifth switch is connected to the controller. The first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the second terminal of the second capacitor. The second terminal of the fifth switch is also connected to the battery; The control terminal of the sixth switch is connected to the controller. The first terminal of the sixth switch is connected to the ground terminal. The second terminal of the sixth switch is also connected to the second terminal of the second capacitor; The control terminal of the seventh switch is connected to the controller. The first terminal of the seventh switch is also connected to the battery. The second terminal of the seventh switch is also connected to the first terminal of the third capacitor; The control terminal of the eighth switch is connected to the controller. The first terminal of the eighth switch is respectively connected to the second terminal of the third capacitor and the second terminal of the ninth switch. The second terminal of the eighth switch is also connected to the battery; The control terminal of the ninth switch is connected to the controller. The first terminal of the ninth switch is connected to the ground terminal. The second terminal of the ninth switch is also connected to the second terminal of the third capacitor.

5. The wireless power receiving circuit according to claim 4, wherein The controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch among a first state, a second state, and a third state; Wherein, the first state includes a state in which the second switch, the third switch, the fourth switch, the sixth switch, and the eighth switch are all turned on; the second state includes a state in which the first switch, the fourth switch, the sixth switch, the seventh switch, and the ninth switch are all turned on; the third state includes a state in which the first switch, the fifth switch, the seventh switch, and the ninth switch are all turned on; The first mode includes the first state, and the second mode includes the first state, the second state, and the third state.

6. The wireless power receiving circuit according to any one of claims 3 to 5, characterized in that The second processing unit includes: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; The control terminal of the tenth switch is connected to the controller. The first terminal of the tenth switch is respectively connected to the second terminal of the eleventh switch and the first terminal of the fourth capacitor. The second terminal of the tenth switch is respectively connected to the second terminal of the thirteenth switch and the first terminal of the fifth capacitor; The control terminal of the eleventh switch is connected to the controller. The first terminal of the eleventh switch is connected to the ground terminal. The second terminal of the eleventh switch is also connected to the first terminal of the fourth capacitor; The control terminal of the twelfth switch is connected to the controller. The first terminal of the twelfth switch is respectively connected to the second terminal of the sixteenth switch and the first terminal of the sixth capacitor. The second terminal of the twelfth switch is respectively connected to the second terminal of the fourth capacitor and the second bridge arm; The control terminal of the thirteenth switch is connected to the controller. The first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch, the battery, the first terminal of the sixteenth switch, and the second terminal of the seventeenth switch. The second terminal of the thirteenth switch is also connected to the first terminal of the fifth capacitor; The control terminal of the fourteenth switch is connected to the controller. The first terminal of the fourteenth switch is respectively connected to the second terminal of the fifteenth switch and the second terminal of the fifth capacitor. The second terminal of the fourteenth switch is also connected to the battery; The control terminal of the fifteenth switch is connected to the controller. The first terminal of the fifteenth switch is connected to the ground terminal. The second terminal of the fifteenth switch is also connected to the second terminal of the fifth capacitor; The control terminal of the sixteenth switch is connected to the controller. The first terminal of the sixteenth switch is also connected to the battery, and the second terminal of the sixteenth switch is also connected to the first terminal of the sixth capacitor; The control terminal of the seventeenth switch is connected to the controller. The first terminal of the seventeenth switch is respectively connected to the second terminal of the sixth capacitor and the second terminal of the eighteenth switch, and the second terminal of the seventeenth switch is also connected to the battery; The control terminal of the eighteenth switch is connected to the controller. The first terminal of the eighteenth switch is connected to the ground terminal, and the second terminal of the eighteenth switch is also connected to the second terminal of the sixth capacitor.

7. The wireless power receiving circuit according to claim 6, wherein The controller is further configured to: in response to the positive signal, control the second processing unit to switch among a fourth state, a fifth state, and a sixth state; Wherein, the fourth state includes: a state in which the eleventh switch, the twelfth switch, the thirteenth switch, the fifteenth switch, and the seventeenth switch are all turned on; the fifth state includes: a state in which the tenth switch, the thirteenth switch, the fifteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the sixth state includes: a state in which the tenth switch, the fourteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; The first mode includes the fourth state, and the third mode includes: the fourth state, the fifth state, and the sixth state.

8. The wireless power receiving circuit according to claim 3, wherein The first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor, and a third capacitor; The control terminal of the first switch is connected to the controller. The first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the third capacitor, and the second terminal of the first switch is respectively connected to the first leg and the first terminal of the first capacitor; The control terminal of the second switch is connected to the controller. The first terminal of the second switch is respectively connected to the first terminal of the second capacitor and the second terminal of the third switch, and the second terminal of the second switch is also connected to the first terminal of the third capacitor; The control terminal of the third switch is connected to the controller. The first terminal of the third switch is respectively connected to the second terminal of the fourth switch, the second terminal of the sixth switch, and the battery, and the second terminal of the third switch is also connected to the first terminal of the second capacitor; The control terminal of the fourth switch is connected to the controller. The first terminal of the fourth switch is respectively connected to the second terminal of the fifth switch, the second terminal of the first capacitor, and the second terminal of the second capacitor, and the second terminal of the fourth switch is also connected to the battery; The control terminal of the fifth switch is connected to the controller. The first terminal of the fifth switch is connected to the ground terminal, and the second terminal of the fifth switch is also respectively connected to the second terminal of the first capacitor and the second terminal of the second capacitor; The control terminal of the sixth switch is connected to the controller. The first terminal of the sixth switch is respectively connected to the second terminal of the seventh switch and the second terminal of the third capacitor. The second terminal of the sixth switch is also connected to the battery. The control terminal of the seventh switch is connected to the controller. The first terminal of the seventh switch is connected to the ground terminal. The second terminal of the seventh switch is also connected to the second terminal of the third capacitor.

9. The wireless power receiving circuit according to claim 8, wherein The controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch between a first state and a second state. Wherein, the first state includes: a state in which the first switch, the third switch, the fifth switch, and the sixth switch are all turned on; the second state includes: a state in which the second switch, the fourth switch, and the seventh switch are all turned on. The first mode includes the first state, and the second mode includes: the first state and the second state.

10. The wireless power receiving circuit according to claim 3, 8 or 9, characterized in that The second processing unit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor. The control terminal of the eighth switch is connected to the controller. The first terminal of the eighth switch is respectively connected to the second terminal of the ninth switch and the first terminal of the sixth capacitor. The second terminal of the eighth switch is respectively connected to the second bridge arm and the first terminal of the fourth capacitor. The control terminal of the ninth switch is connected to the controller. The first terminal of the ninth switch is respectively connected to the first terminal of the fifth capacitor and the second terminal of the tenth switch. The second terminal of the ninth switch is also connected to the first terminal of the sixth capacitor. The control terminal of the tenth switch is connected to the controller. The first terminal of the tenth switch is respectively connected to the second terminal of the eleventh switch, the second terminal of the thirteenth switch, and the battery. The second terminal of the tenth switch is also connected to the first terminal of the fifth capacitor. The control terminal of the eleventh switch is connected to the controller. The first terminal of the eleventh switch is respectively connected to the second terminal of the twelfth switch, the second terminal of the fourth capacitor, and the second terminal of the fifth capacitor. The second terminal of the eleventh switch is also connected to the battery. The control terminal of the twelfth switch is connected to the controller. The first terminal of the twelfth switch is connected to the ground terminal. The second terminal of the twelfth switch is also respectively connected to the second terminal of the fourth capacitor and the second terminal of the fifth capacitor. The control terminal of the thirteenth switch is connected to the controller. The first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch and the second terminal of the sixth capacitor. The second terminal of the thirteenth switch is also connected to the battery. The control terminal of the fourteenth switch is connected to the controller. The first terminal of the fourteenth switch is connected to the ground terminal. The second terminal of the fourteenth switch is also connected to the second terminal of the sixth capacitor.

11. The wireless power receiving circuit according to claim 10, wherein The controller is further configured to: in response to the positive signal, control the second processing unit to switch between a third state and a fourth state. Among them, the third state includes: the state where the eighth switch, the tenth switch, the twelfth switch, and the thirteenth switch are all turned on; the fourth state includes: the state where the ninth switch, the eleventh switch, and the fourteenth switch are all turned on. The first mode includes the third state, and the third mode includes: the third state and the fourth state.

12. The wireless power receiving circuit according to claim 3, wherein The first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor, and a third capacitor. The control end of the first switch is connected to the controller. The first end of the first switch is respectively connected to the second end of the second switch and the first end of the first capacitor. The second end of the first switch is respectively connected to the second end of the fourth switch and the first end of the second capacitor. The control end of the second switch is connected to the controller. The first end of the second switch is connected to the ground terminal. The second end of the second switch is also respectively connected to the first end of the first capacitor and the second end of the second capacitor. The control end of the third switch is connected to the controller. The first end of the third switch is respectively connected to the first end of the fourth switch, the second end of the fifth switch, and the first end of the third capacitor. The second end of the third switch is respectively connected to the second end of the first capacitor and the first bridge arm. The control end of the fourth switch is connected to the controller. The first end of the fourth switch is also connected to the first end of the third capacitor. The second end of the fourth switch is also connected to the first end of the second capacitor. The control end of the fifth switch is connected to the controller. The first end of the fifth switch is respectively connected to the second end of the sixth switch and the battery. The second end of the fifth switch is also connected to the first end of the third capacitor. The control end of the sixth switch is connected to the controller. The first end of the sixth switch is respectively connected to the second end of the seventh switch and the second end of the third capacitor. The second end of the sixth switch is also connected to the battery. The control end of the seventh switch is connected to the controller. The first end of the seventh switch is also connected to the ground terminal. The second end of the seventh switch is also connected to the second end of the third capacitor.

13. The wireless power receiving circuit according to claim 12, wherein The controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch between the first state and the second state. Among them, the first state includes: the state where the second switch, the third switch, the fourth switch, and the sixth switch are all turned on; the second state includes: the state where the first switch, the fifth switch, and the seventh switch are all turned on. The first mode includes the first state, and the second mode includes: the first state and the second state.

14. The wireless power receiving circuit according to claim 3, 11 or 12, characterized in that, The second processing unit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor. The control terminal of the eighth switch is connected to the controller. The first terminal of the eighth switch is respectively connected to the second terminal of the ninth switch and the first terminal of the fourth capacitor. The second terminal of the eighth switch is respectively connected to the second terminal of the eleventh switch and the first terminal of the fifth capacitor; The control terminal of the ninth switch is connected to the controller. The first terminal of the ninth switch is connected to the ground terminal. The second terminal of the ninth switch is also respectively connected to the first terminal of the fourth capacitor and the second terminal of the fifth capacitor; The control terminal of the tenth switch is connected to the controller. The first terminal of the tenth switch is respectively connected to the first terminal of the eleventh switch, the second terminal of the twelfth switch, and the first terminal of the sixth capacitor. The second terminal of the tenth switch is respectively connected to the second terminal of the fourth capacitor and the second bridge arm; The control terminal of the eleventh switch is connected to the controller. The first terminal of the eleventh switch is also connected to the first terminal of the sixth capacitor. The second terminal of the eleventh switch is also connected to the first terminal of the fifth capacitor; The control terminal of the twelfth switch is connected to the controller. The first terminal of the twelfth switch is respectively connected to the second terminal of the thirteenth switch and the battery. The second terminal of the twelfth switch is also connected to the first terminal of the sixth capacitor; The control terminal of the thirteenth switch is connected to the controller. The first terminal of the thirteenth switch is respectively connected to the second terminal of the fourteenth switch and the second terminal of the sixth capacitor. The second terminal of the thirteenth switch is also connected to the battery; The control terminal of the fourteenth switch is connected to the controller. The first terminal of the fourteenth switch is also connected to the ground terminal. The second terminal of the fourteenth switch is also connected to the second terminal of the sixth capacitor.

15. The wireless power receiving circuit according to claim 14, wherein The controller is further configured to: in response to the positive signal, control the second processing unit to switch between a third state and a fourth state; Wherein, the third state includes: a state in which the ninth switch, the tenth switch, the eleventh switch, and the thirteenth switch are all turned on; the fourth state includes: a state in which the eighth switch, the twelfth switch, and the fourteenth switch are all turned on; The first mode includes the third state, and the third mode includes: the third state and the fourth state.

16. The wireless power receiving circuit according to claim 3, wherein, The first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; The control terminal of the first switch is connected to the controller. The first terminal of the first switch is respectively connected to the first terminal of the first capacitor and the first bridge arm. The second terminal of the first switch is respectively connected to the second terminal of the fourth switch, the second terminal of the seventh switch, the second terminal of the ninth switch, and the battery; The control terminal of the second switch is connected to the controller. The first terminal of the second switch is connected to the ground terminal. The second terminal of the second switch is respectively connected to the second terminal of the first capacitor and the second terminal of the third switch; The control terminal of the third switch is connected to the controller. The first terminal of the third switch is respectively connected to the first terminal of the fourth switch and the first terminal of the second capacitor. The second terminal of the third switch is also connected to the second terminal of the first capacitor; The control terminal of the fourth switch is connected to the controller. The first terminal of the fourth switch is also connected to the first terminal of the second capacitor. The second terminal of the fourth switch is also connected to the battery; The control terminal of the fifth switch is connected to the controller. The first terminal of the fifth switch is connected to the ground terminal. The second terminal of the fifth switch is respectively connected to the second terminal of the second capacitor and the second terminal of the sixth switch; The control terminal of the sixth switch is connected to the controller. The first terminal of the sixth switch is respectively connected to the first terminal of the third capacitor and the first terminal of the seventh switch. The second terminal of the sixth switch is also connected to the second terminal of the second capacitor; The control terminal of the seventh switch is connected to the controller. The first terminal of the seventh switch is also connected to the first terminal of the third capacitor. The second terminal of the seventh switch is also connected to the battery; The control terminal of the eighth switch is connected to the controller. The first terminal of the eighth switch is connected to the ground terminal. The second terminal of the eighth switch is respectively connected to the second terminal of the third capacitor and the first terminal of the ninth switch; The control terminal of the ninth switch is connected to the controller. The first terminal of the ninth switch is also connected to the second terminal of the third capacitor. The second terminal of the ninth switch is also connected to the battery.

17. The wireless power receiving circuit according to claim 16, wherein The controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch among a first state, a second state, a third state, and a fourth state; Wherein, the first state includes a state in which the first switch, the second switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on; the second state includes a state in which the third switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on; the third state includes a state in which the third switch, the sixth switch, the seventh switch, and the eighth switch are all turned on; the fourth state includes a state in which the third switch, the sixth switch, and the ninth switch are all turned on; The first mode includes the first state, and the second mode includes: the first state, the second state, the third state, and the fourth state.

18. The wireless power receiving circuit according to claim 3, 16 or 17, characterized in that, The second processing unit includes: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; The control terminal of the tenth switch is connected to the controller. The first terminal of the tenth switch is respectively connected to the first terminal of the fourth capacitor and the second leg. The second terminal of the tenth switch is respectively connected to the second terminal of the thirteenth switch, the second terminal of the sixteenth switch, the second terminal of the eighteenth switch, and the battery; The control terminal of the eleventh switch is connected to the controller. The first terminal of the eleventh switch is connected to the ground terminal. The second terminal of the eleventh switch is respectively connected to the second terminal of the fourth capacitor and the second terminal of the twelfth switch; The control terminal of the twelfth switch is connected to the controller. The first terminal of the twelfth switch is respectively connected to the first terminal of the thirteenth switch and the first terminal of the fifth capacitor. The second terminal of the twelfth switch is also connected to the second terminal of the fourth capacitor; The control terminal of the thirteenth switch is connected to the controller. The first terminal of the thirteenth switch is also connected to the first terminal of the fifth capacitor. The second terminal of the thirteenth switch is also connected to the battery; The control terminal of the fourteenth switch is connected to the controller. The first terminal of the fourteenth switch is connected to the ground terminal. The second terminal of the fourteenth switch is respectively connected to the second terminal of the fifth capacitor and the second terminal of the fifteenth switch; The control terminal of the fifteenth switch is connected to the controller. The first terminal of the fifteenth switch is respectively connected to the first terminal of the sixth capacitor and the first terminal of the sixteenth switch. The second terminal of the fifteenth switch is also connected to the second terminal of the fifth capacitor; The control terminal of the sixteenth switch is connected to the controller. The first terminal of the sixteenth switch is also connected to the first terminal of the sixth capacitor. The second terminal of the sixteenth switch is also connected to the battery; The control terminal of the seventeenth switch is connected to the controller. The first terminal of the seventeenth switch is connected to the ground terminal. The second terminal of the seventeenth switch is respectively connected to the second terminal of the sixth capacitor and the first terminal of the eighteenth switch; The control terminal of the eighteenth switch is connected to the controller. The first terminal of the eighteenth switch is also connected to the second terminal of the sixth capacitor. The second terminal of the eighteenth switch is also connected to the battery.

19. The wireless power receiving circuit according to claim 18, wherein, The controller is further configured to: in response to the positive signal, control the second processing unit to switch among a fifth state, a sixth state, a seventh state, and an eighth state; Wherein, the fifth state includes a state in which the tenth switch, the eleventh switch, the thirteenth switch, the fourteenth switch, the sixteenth switch, and the seventeenth switch are all turned on; the sixth state includes a state in which the twelfth switch, the thirteenth switch, the fourteenth switch, the sixteenth switch, and the seventeenth switch are all turned on; the seventh state includes a state in which the twelfth switch, the fifteenth switch, the sixteenth switch, and the seventeenth switch are all turned on; the eighth state includes a state in which the twelfth switch, the fifteenth switch, and the eighteenth switch are all turned on; The first mode includes the fifth state. The third mode includes the fifth state, the sixth state, the seventh state, and the eighth state.

20. The wireless power receiving circuit according to claim 3, wherein The first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a first capacitor, and a second capacitor; The control terminal of the first switch is connected to the controller. The first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor. The second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor. The control terminal of the second switch is connected to the controller. The first terminal of the second switch is connected to the ground terminal. The second terminal of the second switch is also connected to the first terminal of the first capacitor. The control terminal of the third switch is connected to the controller. The first terminal of the third switch is respectively connected to the first terminal of the fourth switch, the second terminal of the fifth switch, and the battery. The second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first bridge arm. The control terminal of the fourth switch is connected to the controller. The first terminal of the fourth switch is also connected to the battery. The second terminal of the fourth switch is also connected to the first terminal of the second capacitor. The control terminal of the fifth switch is connected to the controller. The first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the second terminal of the second capacitor. The second terminal of the fifth switch is also connected to the battery. The control terminal of the sixth switch is connected to the controller. The first terminal of the sixth switch is connected to the ground terminal. The second terminal of the sixth switch is also connected to the second terminal of the second capacitor.

21. The wireless power receiving circuit according to claim 20, wherein The controller is further configured to: in response to the positive half-cycle signal, control the first processing unit to switch among a first state, a second state, and a third state. Wherein, the first state includes a state in which the second switch, the third switch, the fourth switch, and the sixth switch are all turned on; the second state includes a state in which the first switch, the fourth switch, and the sixth switch are all turned on; the third state includes a state in which the first switch and the fifth switch are all turned on. The first mode includes the first state. The second mode includes the first state, the second state, and the third state.

22. The wireless power receiving circuit according to claim 3, 20 or 21, characterized in that, The second processing unit includes: a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor. The control terminal of the seventh switch is connected to the controller. The first terminal of the seventh switch is respectively connected to the second terminal of the eighth switch and the first terminal of the third capacitor. The second terminal of the seventh switch is respectively connected to the second terminal of the tenth switch and the first terminal of the fourth capacitor. The control terminal of the eighth switch is connected to the controller. The first terminal of the eighth switch is connected to the ground terminal. The second terminal of the eighth switch is also connected to the first terminal of the third capacitor. The control terminal of the ninth switch is connected to the controller. The first terminal of the ninth switch is respectively connected to the first terminal of the tenth switch, the second terminal of the eleventh switch, and the battery. The second terminal of the ninth switch is respectively connected to the second terminal of the third capacitor and the second bridge arm. The control terminal of the tenth switch is connected to the controller. The first terminal of the tenth switch is also connected to the battery, and the second terminal of the tenth switch is also connected to the first terminal of the fourth capacitor. The control terminal of the eleventh switch is connected to the controller. The first terminal of the eleventh switch is respectively connected to the second terminal of the twelfth switch and the second terminal of the fourth capacitor, and the second terminal of the eleventh switch is also connected to the battery. The control terminal of the twelfth switch is connected to the controller. The first terminal of the twelfth switch is connected to the ground terminal, and the second terminal of the twelfth switch is also connected to the second terminal of the fourth capacitor.

23. The wireless power receiving circuit according to claim 22, wherein, The controller is further configured to: in response to the positive signal, control the second processing unit to switch among a fourth state, a fifth state, and a sixth state. Wherein, the fourth state includes a state in which the eighth switch, the ninth switch, the tenth switch, and the twelfth switch are all turned on; the fifth state includes a state in which the seventh switch, the tenth switch, and the twelfth switch are all turned on; the sixth state includes a state in which the seventh switch and the eleventh switch are all turned on. The first mode includes the fourth state, and the third mode includes the fourth state, the fifth state, and the sixth state.

24. A wireless charging system, characterized in that, Comprising: A charging device and at least one power receiving device, the power receiving device comprising: a battery and a wireless power receiving circuit according to any one of claims 1-23. The charging device is configured to: provide electromagnetic waves to the wireless power receiving circuit. The wireless power receiving circuit is configured to: charge the battery in response to the electromagnetic waves.

25. An electronic device, characterized in that, Comprising: A wireless power receiving circuit according to any one of claims 1-23 and a battery, the wireless power receiving circuit being connected to the battery.

26. A charging method, characterized in that, The charging method includes: The power receiver outputs an AC signal to the midpoint of each arm of the plurality of arms in response to wireless power transmission. The controller, in response to the positive half-cycle signal of the AC signal, controls the plurality of arms to output the positive half-cycle signal to the first processing unit, so that the first processing unit charges the battery according to the positive half-cycle signal. The controller, in response to the negative half-cycle signal of the AC signal, controls the plurality of arms to output a positive signal corresponding to the negative half-cycle signal to the second processing unit, so that the second processing unit charges the battery according to the positive signal.

27. The charging method according to claim 26, wherein Controlling the plurality of arms to output the positive half-cycle signal to the first processing unit in response to the positive half-cycle signal of the AC signal includes: in response to the positive half-cycle signal, controlling the plurality of arms to switch between a first mode and a second mode. Controlling the plurality of arms to output a positive signal corresponding to the negative half-cycle signal to the second processing unit in response to the negative half-cycle signal of the AC signal includes: in response to the positive signal, controlling the plurality of arms to switch between the first mode and the third mode. Among them, the multiple bridge arms include a first bridge arm and a second bridge arm. The first bridge arm includes: a first bridge arm switch and a second bridge arm switch. The control end of the first bridge arm switch is connected to the controller. The first end of the first bridge arm switch is respectively connected to the positive electrode of the power receiver and the second end of the second bridge arm switch. The second end of the first bridge arm switch is connected to the first processing unit. The control end of the second bridge arm switch is connected to the controller. The first end of the second bridge arm switch is connected to the ground terminal. The second end of the second bridge arm switch is also connected to the positive electrode of the power receiver. The second bridge arm includes: a third bridge arm switch and a fourth bridge arm switch. The control end of the third bridge arm switch is connected to the controller. The first end of the third bridge arm switch is respectively connected to the negative electrode of the power receiver and the second end of the fourth bridge arm switch. The second end of the third bridge arm switch is connected to the second processing unit. The control end of the fourth bridge arm switch is connected to the controller. The first end of the fourth bridge arm switch is connected to the ground terminal. The second end of the fourth bridge arm switch is also connected to the negative electrode of the power receiver. The first mode includes: a mode in which both the second bridge arm switch and the fourth bridge arm switch are turned on. The second mode includes: a mode in which both the first bridge arm switch and the fourth bridge arm switch are turned on. The third mode includes: a mode in which both the second bridge arm switch and the third bridge arm switch are turned on.

28. The charging method according to claim 27, wherein Charging the battery according to the positive half-cycle signal includes: the controller, in response to the positive half-cycle signal, controls the first processing unit to switch among a first state, a second state, and a third state; Among them, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; the control end of the first switch is connected to the controller, the first end of the first switch is respectively connected to the second end of the second switch and the first end of the first capacitor, and the second end of the first switch is respectively connected to the second end of the fourth switch and the first end of the second capacitor; the control end of the second switch is connected to the controller, the first end of the second switch is connected to the ground terminal, and the second end of the second switch is also connected to the first end of the first capacitor; the control end of the third switch is connected to the controller, the first end of the third switch is respectively connected to the second end of the seventh switch and the first end of the third capacitor, and the second end of the third switch is respectively connected to the second end of the first capacitor and the first bridge arm; the control end of the fourth switch is connected to the controller, the first end of the fourth switch is respectively connected to the second end of the fifth switch, the battery, the first end of the seventh switch, and the second end of the eighth switch, and the second end of the fourth switch is also connected to the first end of the second capacitor; the control end of the fifth switch is connected to the controller, the first end of the fifth switch is respectively connected to the second end of the sixth switch and the second end of the second capacitor, and the second end of the fifth switch is also connected to the battery; the control end of the sixth switch is connected to the controller, the first end of the sixth switch is connected to the ground terminal, and the second end of the sixth switch is also connected to the second end of the second capacitor; the control end of the seventh switch is connected to the controller, the first end of the seventh switch is also connected to the battery, and the second end of the seventh switch is also connected to the first end of the third capacitor; the control end of the eighth switch is connected to the controller, the first end of the eighth switch is respectively connected to the second end of the third capacitor and the second end of the ninth switch, and the second end of the eighth switch is also connected to the battery; the control end of the ninth switch is connected to the controller, the first end of the ninth switch is connected to the ground terminal, and the second end of the ninth switch is also connected to the second end of the third capacitor; the first state includes: the state where the second switch, the third switch, the fourth switch, the sixth switch, and the eighth switch are all turned on; the second state includes: the state where the first switch, the fourth switch, the sixth switch, the seventh switch, and the ninth switch are all turned on; the third state includes: the state where the first switch, the fifth switch, the seventh switch, and the ninth switch are all turned on; the first mode includes the first state, and the second mode includes: the first state, the second state, and the third state.

29. The charging method according to claim 27 or 28, characterized in that, Charging the battery according to the positive signal includes: in response to the positive signal, the controller controls the second processing unit to switch among a fourth state, a fifth state, and a sixth state; Among them, the second processing unit includes: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; the control end of the tenth switch is connected to the controller, the first end of the tenth switch is respectively connected to the second end of the eleventh switch and the first end of the fourth capacitor, and the second end of the tenth switch is respectively connected to the second end of the thirteenth switch and the first end of the fifth capacitor; the control end of the eleventh switch is connected to the controller, the first end of the eleventh switch is connected to the ground terminal, and the second end of the eleventh switch is further connected to the first end of the fourth capacitor; the control end of the twelfth switch is connected to the controller, the first end of the twelfth switch is respectively connected to the second end of the sixteenth switch and the first end of the sixth capacitor, and the second end of the twelfth switch is respectively connected to the second end of the fourth capacitor and the second bridge arm; the control end of the thirteenth switch is connected to the controller, the first end of the thirteenth switch is respectively connected to the second end of the fourteenth switch, the battery, the first end of the sixteenth switch, and the second end of the seventeenth switch, and the second end of the thirteenth switch is further connected to the first end of the fifth capacitor; the control end of the fourteenth switch is connected to the controller, the first end of the fourteenth switch is respectively connected to the second end of the fifteenth switch and the second end of the fifth capacitor, and the second end of the fourteenth switch is further connected to the battery; the control end of the fifteenth switch is connected to the controller, the first end of the fifteenth switch is connected to the ground terminal, and the second end of the fifteenth switch is further connected to the second end of the fifth capacitor; the control end of the sixteenth switch is connected to the controller, the first end of the sixteenth switch is further connected to the battery, and the second end of the sixteenth switch is further connected to the first end of the sixth capacitor; the control end of the seventeenth switch is connected to the controller, the first end of the seventeenth switch is respectively connected to the second end of the sixth capacitor and the second end of the eighteenth switch, and the second end of the seventeenth switch is further connected to the battery; the control end of the eighteenth switch is connected to the controller, the first end of the eighteenth switch is connected to the ground terminal, and the second end of the eighteenth switch is further connected to the second end of the sixth capacitor; the fourth state includes: a state in which the eleventh switch, the twelfth switch, the thirteenth switch, the fifteenth switch, and the seventeenth switch are all turned on; the fifth state includes: a state in which the tenth switch, the thirteenth switch, the fifteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the sixth state includes: a state in which the tenth switch, the fourteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the first mode includes the fourth state, and the third mode includes: the fourth state, the fifth state, and the sixth state.

30. The charging method according to claim 27, wherein Charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch between a first state and a second state in response to the positive half-cycle signal; Wherein, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor and a third capacitor; the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the third capacitor, and the second terminal of the first switch is respectively connected to the first bridge arm and the first terminal of the first capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is respectively connected to the first terminal of the second capacitor and the second terminal of the third switch, and the second terminal of the second switch is also connected to the first terminal of the third capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the second terminal of the fourth switch, the second terminal of the sixth switch and the battery, and the second terminal of the third switch is also connected to the first terminal of the second capacitor; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is respectively connected to the second terminal of the fifth switch, the second terminal of the first capacitor and the second terminal of the second capacitor, and the second terminal of the fourth switch is also connected to the battery; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is connected to the ground terminal, and the second terminal of the fifth switch is also respectively connected to the second terminal of the first capacitor and the second terminal of the second capacitor; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is respectively connected to the second terminal of the seventh switch and the second terminal of the third capacitor, and the second terminal of the sixth switch is also connected to the battery; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is connected to the ground terminal, and the second terminal of the seventh switch is also connected to the second terminal of the third capacitor; the first state includes: a state in which the first switch, the third switch, the fifth switch and the sixth switch are all turned on; the second state includes: a state in which the second switch, the fourth switch and the seventh switch are all turned on; the first mode includes the first state, and the second mode includes: the first state and the second state.

31. The charging method according to claim 27 or 30, characterized in that, Charging the battery according to the positive signal includes: the controller controls the second processing unit to switch between a third state and a fourth state in response to the positive signal; Among them, the second processing unit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; a control end of the eighth switch is connected to the controller, a first end of the eighth switch is respectively connected to a second end of the ninth switch and a first end of the sixth capacitor, and a second end of the eighth switch is respectively connected to the second bridge arm and a first end of the fourth capacitor; a control end of the ninth switch is connected to the controller, a first end of the ninth switch is respectively connected to a first end of the fifth capacitor and a second end of the tenth switch, and the second end of the ninth switch is further connected to the first end of the sixth capacitor; a control end of the tenth switch is connected to the controller, a first end of the tenth switch is respectively connected to a second end of the eleventh switch, a second end of the thirteenth switch, and the battery, and the second end of the tenth switch is further connected to the first end of the fifth capacitor; a control end of the eleventh switch is connected to the controller, a first end of the eleventh switch is respectively connected to a second end of the twelfth switch, a second end of the fourth capacitor, and a second end of the fifth capacitor, and the second end of the eleventh switch is further connected to the battery; a control end of the twelfth switch is connected to the controller, a first end of the twelfth switch is connected to the ground end, and the second end of the twelfth switch is further respectively connected to the second end of the fourth capacitor and the second end of the fifth capacitor; a control end of the thirteenth switch is connected to the controller, a first end of the thirteenth switch is respectively connected to a second end of the fourteenth switch and a second end of the sixth capacitor, and the second end of the thirteenth switch is further connected to the battery; a control end of the fourteenth switch is connected to the controller, a first end of the fourteenth switch is connected to the ground end, and the second end of the fourteenth switch is further connected to the second end of the sixth capacitor; the third state includes a state in which the eighth switch, the tenth switch, the twelfth switch, and the thirteenth switch are all turned on; the fourth state includes a state in which the ninth switch, the eleventh switch, and the fourteenth switch are all turned on; the first mode includes the third state, and the third mode includes: the third state and the fourth state.

32. The charging method according to claim 27, wherein Charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch between the first state and the second state in response to the positive half-cycle signal; Among them, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, a second capacitor, and a third capacitor; the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor, and the second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is connected to the ground terminal, and the second terminal of the second switch is also respectively connected to the first terminal of the first capacitor and the second terminal of the second capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the first terminal of the fourth switch, the second terminal of the fifth switch, and the first terminal of the third capacitor, and the second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first bridge arm; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is also connected to the first terminal of the third capacitor, and the second terminal of the fourth switch is also connected to the first terminal of the second capacitor; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the battery, and the second terminal of the fifth switch is also connected to the first terminal of the third capacitor; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is respectively connected to the second terminal of the seventh switch and the second terminal of the third capacitor, and the second terminal of the sixth switch is also connected to the battery; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the ground terminal, and the second terminal of the seventh switch is also connected to the second terminal of the third capacitor; the first state includes: the state where the second switch, the third switch, the fourth switch, and the sixth switch are all turned on; the second state includes: the state where the first switch, the fifth switch, and the seventh switch are all turned on; the first mode includes the first state, and the second mode includes: the first state and the second state.

33. The charging method according to claim 27 or 32, characterized in that, Charging the battery according to the positive signal includes: the controller controls the second processing unit to switch between a third state and a fourth state in response to the positive signal; Among them, the second processing unit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fourth capacitor, a fifth capacitor, and a sixth capacitor; a control end of the eighth switch is connected to the controller, a first end of the eighth switch is respectively connected to a second end of the ninth switch and a first end of the fourth capacitor, and a second end of the eighth switch is respectively connected to a second end of the eleventh switch and a first end of the fifth capacitor; a control end of the ninth switch is connected to the controller, a first end of the ninth switch is connected to the ground end, and the second end of the ninth switch is further respectively connected to the first end of the fourth capacitor and a second end of the fifth capacitor; a control end of the tenth switch is connected to the controller, a first end of the tenth switch is respectively connected to a first end of the eleventh switch, a second end of the twelfth switch, and a first end of the sixth capacitor, and a second end of the tenth switch is respectively connected to a second end of the fourth capacitor and a second bridge arm; a control end of the eleventh switch is connected to the controller, a first end of the eleventh switch is further connected to the first end of the sixth capacitor, and a second end of the eleventh switch is further connected to the first end of the fifth capacitor; a control end of the twelfth switch is connected to the controller, a first end of the twelfth switch is respectively connected to a second end of the thirteenth switch and the battery, and a second end of the twelfth switch is further connected to the first end of the sixth capacitor; a control end of the thirteenth switch is connected to the controller, a first end of the thirteenth switch is respectively connected to a second end of the fourteenth switch and a second end of the sixth capacitor, and a second end of the thirteenth switch is further connected to the battery; a control end of the fourteenth switch is connected to the controller, a first end of the fourteenth switch is further connected to the ground end, and a second end of the fourteenth switch is further connected to the second end of the sixth capacitor; the third state includes: a state in which the ninth switch, the tenth switch, the eleventh switch, and the thirteenth switch are all turned on; the fourth state includes: a state in which the eighth switch, the twelfth switch, and the fourteenth switch are all turned on; the first mode includes the third state, and the third mode includes: the third state and the fourth state.

34. The charging method according to claim 27, wherein, Charging the battery according to the positive half-cycle signal includes: the controller, in response to the positive half-cycle signal, controls the first processing unit to switch among the first state, the second state, the third state, and the fourth state; Among them, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a first capacitor, a second capacitor, and a third capacitor; the control end of the first switch is connected to the controller, the first end of the first switch is respectively connected to the first end of the first capacitor and the first bridge arm, and the second end of the first switch is respectively connected to the second end of the fourth switch, the second end of the seventh switch, the second end of the ninth switch, and the battery; the control end of the second switch is connected to the controller, the first end of the second switch is connected to the ground end, and the second end of the second switch is respectively connected to the second end of the first capacitor and the second end of the third switch; the control end of the third switch is connected to the controller, the first end of the third switch is respectively connected to the first end of the fourth switch and the first end of the second capacitor, and the second end of the third switch is also connected to the second end of the first capacitor; the control end of the fourth switch is connected to the controller, the first end of the fourth switch is also connected to the first end of the second capacitor, and the second end of the fourth switch is also connected to the battery; the control end of the fifth switch is connected to the controller, the first end of the fifth switch is connected to the ground end, and the second end of the fifth switch is respectively connected to the second end of the second capacitor and the second end of the sixth switch; the control end of the sixth switch is connected to the controller, the first end of the sixth switch is respectively connected to the first end of the third capacitor and the first end of the seventh switch, and the second end of the sixth switch is also connected to the second end of the second capacitor; the control end of the seventh switch is connected to the controller, the first end of the seventh switch is also connected to the first end of the third capacitor, and the second end of the seventh switch is also connected to the battery; the control end of the eighth switch is connected to the controller, the first end of the eighth switch is connected to the ground end, and the second end of the eighth switch is respectively connected to the second end of the third capacitor and the first end of the ninth switch; the control end of the ninth switch is connected to the controller, the first end of the ninth switch is also connected to the second end of the third capacitor, and the second end of the ninth switch is also connected to the battery; the first state includes: the state in which the first switch, the second switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on; the second state includes: the state in which the third switch, the fourth switch, the fifth switch, the seventh switch, and the eighth switch are all turned on; the third state includes: the state in which the third switch, the sixth switch, the seventh switch, and the eighth switch are all turned on; the fourth state includes: the state in which the third switch, the sixth switch, and the ninth switch are all turned on; the first mode includes the first state, and the second mode includes: the first state, the second state, the third state, and the fourth state.

35. The charging method according to claim 27 or 34, characterized in that, Charging the battery according to the positive signal includes: the controller controls the second processing unit to switch between a fifth state, a sixth state, a seventh state, and an eighth state in response to the positive signal; Among them, the second processing unit includes: a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a fourth capacitor, a fifth capacitor and a sixth capacitor; the control end of the tenth switch is connected to the controller, the first end of the tenth switch is respectively connected to the first end of the fourth capacitor and the second bridge arm, and the second end of the tenth switch is respectively connected to the second end of the thirteenth switch, the second end of the sixteenth switch, the second end of the eighteenth switch and the battery; the control end of the eleventh switch is connected to the controller, the first end of the eleventh switch is connected to the ground end, and the second end of the eleventh switch is respectively connected to the second end of the fourth capacitor and the second end of the twelfth switch; the control end of the twelfth switch is connected to the controller, the first end of the twelfth switch is respectively connected to the first end of the thirteenth switch and the first end of the fifth capacitor, and the second end of the twelfth switch is also connected to the second end of the fourth capacitor; the control end of the thirteenth switch is connected to the controller, the first end of the thirteenth switch is also connected to the first end of the fifth capacitor, and the second end of the thirteenth switch is also connected to the battery; the control end of the fourteenth switch is connected to the controller, the first end of the fourteenth switch is connected to the ground end, and the second end of the fourteenth switch is respectively connected to the second end of the fifth capacitor and the second end of the fifteenth switch; the control end of the fifteenth switch is connected to the controller, the first end of the fifteenth switch is respectively connected to the first end of the sixth capacitor and the first end of the sixteenth switch, and the second end of the fifteenth switch is also connected to the second end of the fifth capacitor; the control end of the sixteenth switch is connected to the controller, the first end of the sixteenth switch is also connected to the first end of the sixth capacitor, and the second end of the sixteenth switch is also connected to the battery; the control end of the seventeenth switch is connected to the controller, the first end of the seventeenth switch is connected to the ground end, and the second end of the seventeenth switch is respectively connected to the second end of the sixth capacitor and the first end of the eighteenth switch; the control end of the eighteenth switch is connected to the controller, the first end of the eighteenth switch is also connected to the second end of the sixth capacitor, and the second end of the eighteenth switch is also connected to the battery; the fifth state includes: the state in which the tenth switch, the eleventh switch, the thirteenth switch, the fourteenth switch, the sixteenth switch and the seventeenth switch are all turned on; the sixth state includes: the state in which the twelfth switch, the thirteenth switch, the fourteenth switch, the sixteenth switch and the seventeenth switch are all turned on; the seventh state includes: the state in which the twelfth switch, the fifteenth switch, the sixteenth switch and the seventeenth switch are all turned on; the eighth state includes: the state in which the twelfth switch, the fifteenth switch and the eighteenth switch are all turned on;The first mode includes the fifth state, and the third mode includes: the fifth state, the sixth state, the seventh state, and the eighth state.; 36. The charging method according to claim 27, wherein Charging the battery according to the positive half-cycle signal includes: the controller controls the first processing unit to switch between a first state, a second state, and a third state in response to the positive half-cycle signal; Wherein, the first processing unit includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a first capacitor, and a second capacitor; the control terminal of the first switch is connected to the controller, the first terminal of the first switch is respectively connected to the second terminal of the second switch and the first terminal of the first capacitor, and the second terminal of the first switch is respectively connected to the second terminal of the fourth switch and the first terminal of the second capacitor; the control terminal of the second switch is connected to the controller, the first terminal of the second switch is connected to the ground terminal, and the second terminal of the second switch is further connected to the first terminal of the first capacitor; the control terminal of the third switch is connected to the controller, the first terminal of the third switch is respectively connected to the first terminal of the fourth switch, the second terminal of the fifth switch, and the battery, and the second terminal of the third switch is respectively connected to the second terminal of the first capacitor and the first bridge arm; the control terminal of the fourth switch is connected to the controller, the first terminal of the fourth switch is further connected to the battery, and the second terminal of the fourth switch is further connected to the first terminal of the second capacitor; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is respectively connected to the second terminal of the sixth switch and the second terminal of the second capacitor, and the second terminal of the fifth switch is further connected to the battery; the control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is connected to the ground terminal, and the second terminal of the sixth switch is further connected to the second terminal of the second capacitor; the first state includes: a state in which the second switch, the third switch, the fourth switch, and the sixth switch are all turned on; the second state includes: a state in which the first switch, the fourth switch, and the sixth switch are all turned on; the third state includes: a state in which the first switch and the fifth switch are both turned on; the first mode includes the first state, and the second mode includes: the first state, the second state, and the third state.

37. The charging method according to claim 27 or 36, characterized in that, Charging the battery according to the positive signal includes: the controller controls the second processing unit to switch between a fourth state, a fifth state, and a sixth state in response to the positive signal; Among them, the second processing unit includes: a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor; the control end of the seventh switch is connected to the controller, the first end of the seventh switch is respectively connected to the second end of the eighth switch and the first end of the third capacitor, and the second end of the seventh switch is respectively connected to the second end of the tenth switch and the first end of the fourth capacitor; the control end of the eighth switch is connected to the controller, the first end of the eighth switch is connected to the ground terminal, and the second end of the eighth switch is also connected to the first end of the third capacitor; the control end of the ninth switch is connected to the controller, the first end of the ninth switch is respectively connected to the first end of the tenth switch, the second end of the eleventh switch, and the battery, and the second end of the ninth switch is respectively connected to the second end of the third capacitor and the second bridge arm; the control end of the tenth switch is connected to the controller, the first end of the tenth switch is also connected to the battery, and the second end of the tenth switch is also connected to the first end of the fourth capacitor; the control end of the eleventh switch is connected to the controller, the first end of the eleventh switch is respectively connected to the second end of the twelfth switch and the second end of the fourth capacitor, and the second end of the eleventh switch is also connected to the battery; the control end of the twelfth switch is connected to the controller, the first end of the twelfth switch is connected to the ground terminal, and the second end of the twelfth switch is also connected to the second end of the fourth capacitor; the fourth state includes: the state where the eighth switch, the ninth switch, the tenth switch, and the twelfth switch are all turned on; the fifth state includes: the state where the seventh switch, the tenth switch, and the twelfth switch are all turned on; the sixth state includes: the state where the seventh switch and the eleventh switch are all turned on; the first mode includes the fourth state, and the third mode includes: the fourth state, the fifth state, and the sixth state.

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