Charging management circuit, wireless charging system, electronic equipment and charging method

Abstract

According to the charging management circuit, the wireless charging system, the electronic equipment and the charging method provided by the invention, the two bridge arms and the DCDC converter are arranged, and the two bridge arms and the DCDC converter work cooperatively to realize conversion from alternating current to direct current, so that the two bridge arms and the DCDC converter do not work independently but influence each other; and the charging management circuit belongs to a single-stage circuit scheme, so that the energy loss during charging can be reduced, and the charging efficiency can be improved. And on the other hand, the charging management circuit in the embodiment of the invention can charge the battery by adopting fewer devices, the energy loss during charging can also be reduced, and the charging efficiency of the battery is improved. According to the charging management circuit, the first bridge arm is not directly connected with the grounding end but is connected to the grounding end through the first switch, and similarly, the second bridge arm is connected to the grounding end through the second switch, so that the partial voltage of the first bridge arm and the second bridge arm can be reduced, the voltage resistance of the charging management circuit is improved, and the reliability of the charging management circuit is improved.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and in particular to charging management circuits, wireless charging systems, electronic devices, and charging methods. Background Technology

[0002] As the charging power of electronic products continues to increase, wired and wireless charging solutions are taking up increasingly larger areas of the board, leading to limited board space and tight component placement. In high-power wireless charging scenarios, due to the use of multi-stage cascaded circuits, each stage operates completely independently. Therefore, high-voltage, large capacitors need to be added at the outputs of the rectifier bridge and the linear regulator for filtering, resulting in a bulky wireless charging solution with low efficiency, high losses, and impacting fast charging speeds. Therefore, improving charging efficiency has become a pressing issue. Summary of the Invention

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

[0004] In a first aspect, embodiments of this application provide a charging management circuit, including: a power receiver, a first bridge arm, a second bridge arm, a DC-DC converter, and a controller; the DC-DC converter includes: a first switch, a second switch, and a processing unit; the power receiver is connected to the midpoint of the first bridge arm and also to the midpoint of the second bridge arm, and the power receiver is used to: output an AC signal to the midpoint of the first and second bridge arms in response to wireless power transmission; the first terminal of the first switch is connected to the first transmission terminal of the processing unit, the second terminal of the first switch is connected to the ground terminal, and the control terminal of the first switch is connected to the controller; the first terminal of the second switch is connected to the second transmission terminal of the processing unit, the second terminal of the second switch is connected to the ground terminal, and the control terminal of the second switch is connected to the controller; The bridge arm is also connected to the first transmission terminal, the third transmission terminal of the processing unit, and the controller, respectively. The second bridge arm is also connected to the second transmission terminal, the fourth transmission terminal of the processing unit, and the controller, respectively. The first, second, third, and fourth transmission terminals are all different. The controller is used to: control the first bridge arm, the second bridge arm, the first switch, and the second switch in response to the positive half-cycle signal of the AC signal, and output the positive half-cycle signal to the processing unit; and control the first bridge arm, the second bridge arm, the first switch, and the second switch in response to the negative half-cycle signal of the AC signal, and convert the negative half-cycle signal into a positive signal and output it to the processing unit. The output terminal of the processing unit is used to connect to the battery. The processing unit is used to: charge the battery in response to the positive half-cycle signal; and charge the battery in response to the positive signal.

[0005] Thus, the processing unit can charge the battery based on the positive half-cycle signal in cooperation with the two bridge arms, the first switch, and the second switch, and can also charge the battery based on the negative half-cycle signal in cooperation with the two bridge arms, the first switch, and the second switch. Therefore, through the coordinated operation of the processing unit, the two bridge arms, the first switch, and the second switch, the battery can be charged based on the AC signal. When the two bridge arms and the DC-DC converter work together, the AC to DC conversion can be achieved. Therefore, the two bridge arms and the DC-DC converter do not work independently but influence each other. Thus, the whole consisting of the two bridge arms and the DC-DC converter can be regarded as a single stage. Therefore, the charging management circuit in this embodiment belongs to a single-stage circuit scheme. The loss generated when charging the battery is a single-stage loss. Compared with the multi-stage loss in the multi-stage cascaded circuit scheme, it can effectively reduce the energy loss during charging and improve the charging efficiency.

[0006] On the other hand, when charging a battery wirelessly, existing technologies require the rectifier, filter capacitor, linear regulator, overvoltage protector, and DC-DC converter to all be working to achieve battery charging. However, in this embodiment, only the DC-DC converter and two bridge arms are needed to work together to charge the battery. Since the rectifier, linear regulator, and overvoltage protector each include multiple components, and the total number of components in the rectifier, linear regulator, and overvoltage protector is necessarily greater than the total number of components in the two bridge arms (i.e., the bridge arm switches mentioned later), assuming that the DC-DC converter in the prior art has the same structure as the DC-DC converter in this embodiment, then this embodiment uses fewer components to achieve charging, thereby reducing energy loss during charging and improving battery charging efficiency.

[0007] Furthermore, since the first bridge arm is not directly connected to the ground terminal but is connected to the ground terminal through the first switch, and similarly the second bridge arm is connected to the ground terminal through the second switch, the voltage drop between the first bridge arm and the second bridge arm can be reduced, thereby improving the withstand voltage performance of the charging management circuit and thus improving the reliability of the charging management circuit.

[0008] Optionally, the DC-DC converter further includes a first switching unit and a second switching unit. The DC-DC converter also includes a wired power input terminal. The first switching unit is connected to a third transmission terminal, the wired power input terminal, and a controller, respectively. The second switching unit is connected to a fourth transmission terminal, the wired power input terminal, and the controller, respectively. The wired power input terminal, the first transmission terminal, the second transmission terminal, the third transmission terminal, and the fourth transmission terminal are all different. The controller is further configured to: in response to meeting wireless charging conditions, control the first switching unit to disconnect the wired power input terminal from the third transmission terminal, and control the second switching unit to disconnect the wired power input terminal from the fourth transmission terminal. Thus, the first and second switching units can control whether the power input from the wired power input terminal is transmitted to the processing unit. Therefore, when charging the battery wirelessly, both the first and second switching units can be disconnected to prevent interference from the power input from the wired power input terminal during wireless charging, thereby improving the reliability and safety of wireless charging. Furthermore, when charging the battery wirelessly, the first and second switching units are in a normally off mode. Therefore, the first and second switching units do not need to be turned on during wireless charging, unlike in the prior art where both units still need to be turned on. Thus, this embodiment of the application can further reduce the number of activated devices when charging the battery wirelessly, thereby further reducing charging losses and improving charging efficiency. It should be understood that the first switching unit mentioned in this paragraph is a different structure from the first switch mentioned above; they are not the same, only their names are similar. Similarly, the second switching unit mentioned in this paragraph is a different structure from the second switch mentioned above; they are not the same, only their names are similar.

[0009] 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal, and the second electrode 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 electrode of the third bridge arm switch is connected to the controller. The first electrode of the third bridge arm switch is connected to the negative electrode of the power receiver and the second electrode of the fourth bridge arm switch, respectively. The second pole of the switch is connected to the fourth transmission terminal; the control pole of the fourth bridge arm switch is connected to the controller, the first pole of the fourth bridge arm switch is connected to the second transmission terminal, and the second pole of the fourth bridge arm switch is also connected to the negative terminal of the power receiver; the controller is used to: 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 half-cycle signal; and control the first bridge arm and the second bridge arm to switch between a first mode and a third mode in response to a positive signal; 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, 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 controlling the conduction state of each bridge arm switch, the switching between the first and second bridge arms in different modes can be controlled. This, in conjunction with the first and second switches, transmits the positive half-cycle signal in the AC signal to the processing unit, and converts the negative half-cycle signal into a positive signal and transmits it to the processing unit. This allows the processing unit to process the received signal and charge the battery, thereby enabling the coordinated operation of each bridge arm, the first switch, the second switch, and the processing unit to improve the battery charging efficiency.

[0010] Optionally, the processing unit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor; the control electrode of the third switch is connected to the controller, and the first electrode of the third switch is connected to the second electrode of the fourth switch, the first electrode of the fifth switch, and the first electrode of the second capacitor, respectively; the second electrode of the third switch is connected to the first electrode of the first switch and the second electrode of the first capacitor, respectively; the control electrode of the fourth switch is connected to the controller, and the first electrode of the fourth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor, respectively; the second electrode of the fourth switch is also connected to the first electrode of the second capacitor; the control electrode of the fifth switch is connected to the controller, and the first electrode of the fifth switch is also connected to the first electrode of the second capacitor, respectively; the second electrode of the fifth switch is connected to the battery, the first electrode of the sixth switch, the second electrode of the ninth switch, and the first electrode of the tenth switch, respectively; the control electrode of the sixth switch is connected to the controller, and the first electrode of the sixth switch is also connected to the battery; the second electrode of the sixth switch is connected to the second electrode of the second capacitor and the first electrode of the seventh switch, respectively. The control electrode of the seventh switch is connected to the controller, and the first electrode of the seventh switch is also connected to the second electrode of the second capacitor. The second electrode of the seventh switch is connected to the ground terminal. The control electrode of the eighth switch is connected to the controller, and the first electrode of the eighth switch is connected to the first electrode of the first capacitor and the second electrode of the first bridge arm switch. The second electrode of the eighth switch is connected to the first electrode of the fourth capacitor, the first electrode of the ninth switch, and the first electrode of the twelfth switch. The control electrode of the ninth switch is connected to the controller, and the first electrode of the ninth switch is also connected to the first electrode of the fourth capacitor. The second electrode of the ninth switch is also connected to the battery. The control electrode of the tenth switch is connected to the controller, and the first electrode of the tenth switch is also connected to the battery. The second electrode of the tenth switch is connected to the second electrode of the fourth capacitor and the first electrode of the eleventh switch. The control electrode of the eleventh switch is connected to the controller, and the first electrode of the eleventh switch is also connected to the second electrode of the fourth capacitor. The second electrode of the eleventh switch is connected to the ground terminal. The control electrode of the twelfth switch is connected to the controller, and the first electrode of the twelfth switch is also connected to the first electrode of the fourth capacitor. The second electrode of the twelfth switch is connected to the second electrode of the third capacitor and the first electrode of the second switch.

[0011] At this time, the controller is also used to: control the first switch, the second switch, and the processing unit to switch between the first state, the second state, the third state, and the fourth state in response to a positive half-cycle signal; and control the first switch, the second switch, and the processing unit to switch between the first state, the fifth state, the sixth state, and the seventh state in response to a positive signal; wherein, the first state includes: the state in which the first switch, the second switch, the fourth switch, the sixth switch, the eighth switch, and the tenth switch are all turned on; the second state includes: the state in which the second switch, the third switch, the fifth switch, the seventh switch, the ninth switch, and the eleventh switch are all turned on; and the third state includes: the state in which the first switch, the second switch, the fifth switch, the seventh switch, the eighth switch, and the tenth switch are all turned on. The fourth state includes: the second, third, fourth, sixth, ninth, and eleventh switches are all on; the fifth state includes: the first, fifth, seventh, ninth, eleventh, and twelfth switches are all on; the sixth state includes: the first, second, fourth, sixth, ninth, and eleventh switches are all on; the seventh state includes: the first, fifth, seventh, eighth, tenth, and twelfth switches are all on; the first mode includes: the first state, the second state, and the fifth state; the second mode includes: the second state, the third state, and the fourth state; the third mode includes: the fifth state, the sixth state, and the seventh state. Thus, by switching between different states by the processing unit, the battery can be charged based on the positive half-cycle signal and the negative half-cycle signal.

[0012] Optionally, the processing unit includes a first circuit and a second circuit. The first circuit is connected to the first terminal of the first switch, the second terminal of the first bridge arm switch, the first terminal of the second bridge arm switch, and the battery, respectively. The first circuit is used to charge the battery in response to a positive half-cycle signal. The second circuit is connected to the first terminal of the second switch, the second terminal of the third bridge arm switch, the first terminal of the fourth bridge arm switch, and the battery, respectively. The second circuit is used to charge the battery in response to a positive signal. Therefore, the processing unit in this embodiment can be regarded as a circuit structure with a two-phase structure, where one phase acts as the first circuit to process the positive half-cycle signal alone, and the other phase acts as the second circuit to process the negative half-cycle signal alone. This allows for alternating charging of the battery based on the positive and negative half-cycle signals, reducing current ripple during charging and improving charging efficiency.

[0013] Optionally, the first circuit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, a first capacitor, a second capacitor, and a third capacitor; the control electrode of the third switch is connected to the controller, the first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor, and the second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch; the control electrode of the fourth switch is connected to the controller, the first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor, and the second electrode of the fourth switch is connected to the first electrode of the third capacitor and the first electrode of the eighth switch; the control electrode of the fifth switch is connected to the controller, the first electrode of the fifth switch is also connected to the first electrode of the second capacitor, and the second electrode of the fifth switch is connected to the battery, the first electrode of the sixth switch, and the tenth switch; The first pole of switch 9 and the second pole of switch 8 are connected; the control pole of switch 6 is connected to the controller, the first pole of switch 6 is also connected to the battery, the second pole of switch 6 is connected to the second pole of capacitor 2 and the first pole of switch 7 respectively; the control pole of switch 7 is connected to the controller, the first pole of switch 7 is also connected to the second pole of capacitor 2, and the second pole of switch 7 is connected to ground; the control pole of switch 8 is connected to the controller, the first pole of switch 8 is also connected to the first pole of capacitor 3, and the second pole of switch 8 is also connected to the battery; the control pole of switch 9 is connected to the controller, the first pole of switch 9 is also connected to the battery, the second pole of switch 9 is connected to the second pole of capacitor 3 and the first pole of switch 10 respectively; the control pole of switch 10 is connected to the controller, the first pole of switch 10 is also connected to the second pole of capacitor 3, and the second pole of switch 10 is connected to ground.

[0014] At this time, the controller is also used to: control the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state in response to the positive half-cycle signal; wherein, 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 ninth switch are all turned on; the second state includes: the state in which the second switch, the third switch, the fifth switch, the seventh switch, the eighth switch, and the tenth switch are all turned on; the third state includes: the state in which the second switch, the third switch, the sixth switch, the eighth switch, and the tenth switch are all turned on; the first mode includes: the first state and the second state; the second mode includes: the first state, the second state, and the third state. In this way, by switching the first circuit in different states, the battery can be charged based on the positive half-cycle signal.

[0015] Optionally, the second circuit includes: 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 electrode of the eleventh switch is connected to the controller, the first electrode of the eleventh switch is connected to the first electrode of the thirteenth switch and the first electrode of the fifth capacitor, and the second electrode of the eleventh switch is connected to the first electrode of the second switch, the second electrode of the fourth capacitor, and the first electrode of the fourth bridge arm switch; the control electrode of the twelfth switch is connected to the controller, the first electrode of the twelfth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the fourth capacitor, and the second electrode of the twelfth switch is connected to the first electrode of the sixth capacitor and the first electrode of the sixteenth switch; the control electrode of the thirteenth switch is connected to the controller, the first electrode of the thirteenth switch is also connected to the first electrode of the fifth capacitor, and the second electrode of the thirteenth switch is connected to the battery, the first electrode of the fourteenth switch, and the first electrode of the sixteenth switch; The first pole of switch 17 and the second pole of switch 16 are connected; the control pole of switch 14 is connected to the controller, the first pole of switch 14 is also connected to the battery, the second pole of switch 14 is connected to the second pole of capacitor 5 and the first pole of switch 15 respectively; the control pole of switch 15 is connected to the controller, the first pole of switch 15 is also connected to the second pole of capacitor 5, and the second pole of switch 15 is connected to the ground terminal; the control pole of switch 16 is connected to the controller, the first pole of switch 16 is also connected to the first pole of capacitor 6, and the second pole of switch 16 is also connected to the battery; the control pole of switch 17 is connected to the controller, the first pole of switch 17 is also connected to the battery, the second pole of switch 17 is connected to the second pole of capacitor 6 and the first pole of switch 18 respectively; the control pole of switch 18 is connected to the controller, the first pole of switch 18 is also connected to the second pole of capacitor 6, and the second pole of switch 18 is connected to the ground terminal.

[0016] At this time, the controller is also used to: control the first switch, the second switch, and the second circuit to switch between the fourth state, the fifth state, and the sixth state in response to a positive signal; wherein the fourth state includes: the first switch, the second switch, the twelfth switch, the thirteenth switch, the fifteenth switch, and the seventeenth switch are all turned on; the fifth state includes: the first switch, the eleventh switch, the thirteenth switch, the fifteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the sixth state includes: the first switch, the eleventh switch, the fourteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the first mode includes: the fourth state and the fifth state; the third mode includes: the fourth state, the fifth state, and the sixth state. Thus, by switching between different states through the second circuit, the battery can be charged based on the negative half-cycle signal.

[0017] Optionally, the first circuit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor; the control electrode of the third switch is connected to the controller, the first electrode of the third switch is connected to the second electrode of the fifth switch, the first electrode of the sixth switch, and the battery, and the second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch; the control electrode of the fourth switch is connected to the controller, the first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor, and the second electrode of the fourth switch is connected to the first electrode of the second capacitor and the first electrode of the fifth switch; the control electrode of the fifth switch is connected to the controller, the first electrode of the fifth switch is also connected to the first electrode of the second capacitor, and the second electrode of the fifth switch is also connected to the battery; the control electrode of the sixth switch is connected to the controller, the first electrode of the sixth switch is also connected to the battery, and the second electrode of the sixth switch is connected to the second electrode of the second capacitor and the first electrode of the seventh switch; the control electrode of the seventh switch is connected to the controller, the first electrode of the seventh switch is also connected to the second electrode of the second capacitor, and the second electrode of the seventh switch is connected to the ground terminal.

[0018] At this time, the controller is also used to: control the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state in response to the positive half-cycle signal; wherein, the first state includes: the first switch, the second switch, the fifth switch, and the seventh switch are all on; the second state includes: the second switch, the third switch, the fifth switch, and the seventh switch are all on; the third state includes: the first switch, the second switch, the fourth switch, and the sixth switch are all on; the first mode includes: the first state and the second state; the second mode includes: the second state and the third state. Thus, by switching the first circuit between different states, the battery can be charged based on the positive half-cycle signal.

[0019] Optionally, the second circuit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor; the control electrode of the eighth switch is connected to the controller, the first electrode of the eighth switch is connected to the second electrode of the tenth switch, the first electrode of the eleventh switch, and the battery, and the second electrode of the eighth switch is connected to the first electrode of the second switch, the second electrode of the third capacitor, and the first electrode of the fourth bridge arm switch; the control electrode of the ninth switch is connected to the controller, the first electrode of the ninth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor, and the second electrode of the ninth switch is connected to the first electrode of the fourth capacitor and the first electrode of the tenth switch; the control electrode of the tenth switch is connected to the controller, the first electrode of the tenth switch is also connected to the first electrode of the fourth capacitor, and the second electrode of the tenth switch is also connected to the battery; the control electrode of the eleventh switch is connected to the controller, the first electrode of the eleventh switch is also connected to the battery, and the second electrode of the eleventh switch is connected to the second electrode of the fourth capacitor and the first electrode of the twelfth switch; the control electrode of the twelfth switch is connected to the controller, the first electrode of the twelfth switch is also connected to the second electrode of the fourth capacitor, and the second electrode of the twelfth switch is connected to the ground terminal.

[0020] At this time, the controller is also used to: respond to a positive signal and control the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; wherein the fourth state includes: the first switch, the second switch, the tenth switch, and the twelfth switch are all on; the fifth state includes: the first switch, the eighth switch, the tenth switch, and the twelfth switch are all on; the sixth state includes: the first switch, the second switch, the ninth switch, and the eleventh switch are all on; the first mode includes: the fourth state and the fifth state; the third mode includes: the fifth state and the sixth state. Thus, by switching between different states through the second circuit, the battery can be charged based on the negative half-cycle signal.

[0021] Optionally, the first circuit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor; the control electrode of the third switch is connected to the controller, the first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor, and the second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch; the control electrode of the fourth switch is connected to the controller, the first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor, and the second electrode of the fourth switch is connected to the battery, the second circuit, the second electrode of the fifth switch, and the first electrode of the sixth switch; the control electrode of the fifth switch is connected to the controller, the first electrode of the fifth switch is also connected to the first electrode of the second capacitor, and the second electrode of the fifth switch is also connected to the battery; the control electrode of the sixth switch is connected to the controller, the first electrode of the sixth switch is also connected to the battery, and the second electrode of the sixth switch is connected to the second electrode of the second capacitor and the first electrode of the seventh switch; the control electrode of the seventh switch is connected to the controller, the first electrode of the seventh switch is also connected to the second electrode of the second capacitor, and the second electrode of the seventh switch is connected to the ground terminal.

[0022] At this time, the controller is also used to: control the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state in response to the positive half-cycle signal; wherein, the first state includes: the first switch, the second switch, the fourth switch, the fifth switch, and the seventh switch are all turned on; the second state includes: the second switch, the third switch, the fifth switch, and the seventh switch are all turned on; the third state includes: the second switch, the third switch, and the sixth 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. Thus, by switching the first circuit between different states, the battery can be charged based on the positive half-cycle signal.

[0023] Optionally, the second circuit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor; the control electrode of the eighth switch is connected to the controller, the first electrode of the eighth switch is connected to the first electrode of the tenth switch and the first electrode of the fourth capacitor, and the second electrode of the eighth switch is connected to the first electrode of the second switch, the second electrode of the third capacitor, and the first electrode of the fourth bridge arm switch; the control electrode of the ninth switch is connected to the controller, the first electrode of the ninth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor, and the second electrode of the ninth switch is connected to the battery, the second electrode of the tenth switch, the first electrode of the eleventh switch, and the first circuit; the control electrode of the tenth switch is connected to the controller, the first electrode of the tenth switch is also connected to the first electrode of the fourth capacitor, and the second electrode of the tenth switch is also connected to the battery; the control electrode of the eleventh switch is connected to the controller, the first electrode of the eleventh switch is also connected to the battery, and the second electrode of the eleventh switch is connected to the second electrode of the fourth capacitor and the first electrode of the twelfth switch; the control electrode of the twelfth switch is connected to the controller, the first electrode of the twelfth switch is also connected to the second electrode of the fourth capacitor, and the second electrode of the twelfth switch is connected to the ground terminal.

[0024] At this time, the controller is also used to: respond to a positive signal and control the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; wherein, the fourth state includes: the first switch, the second switch, the ninth switch, the tenth switch, and the twelfth switch are all on; the fifth state includes: the first switch, the eighth switch, the tenth switch, and the twelfth switch are all on; the sixth state includes: the first switch, the eighth switch, and the eleventh switch are all on; the first mode includes: the fourth state; the third mode includes: the fourth state, the fifth state, and the sixth state. Thus, by switching between different states through the second circuit, the battery can be charged based on the negative half-cycle signal.

[0025] Secondly, embodiments of this application also provide a wireless charging system, which may include: a charging device and at least one receiving device, the receiving device including: a battery, and a charging management circuit as described in the first aspect and any embodiment of the first aspect; the charging device is used to: provide electromagnetic waves to the charging management circuit; the charging management circuit is used to: charge the battery in response to the electromagnetic waves, thereby improving the charging efficiency of the wireless charging system for the battery.

[0026] It should be understood that since the principle by which this wireless charging system solves the problem is similar to that of the aforementioned charging management circuit, the implementation and technical effects of this wireless charging system can be found in the implementation and technical effects of the aforementioned charging management circuit, and the repetitions will not be repeated.

[0027] Thirdly, embodiments of this application also provide an electronic device that may include: a charging management circuit as described in the first aspect and any of the embodiments in the first aspect, and a battery, wherein the charging management circuit is connected to the battery, thereby improving the charging efficiency of the electronic device.

[0028] It should be understood that since the principle by which this electronic device solves the problem is similar to that of the aforementioned charging management circuit, the implementation and technical effects of this electronic device can be found in the implementation and technical effects of the aforementioned charging management circuit, and the repetitions will not be repeated.

[0029] Fourthly, embodiments of this application also provide a charging method for charging using a charging management circuit as described in the first aspect and any of the embodiments described in the first aspect. The charging method may include: a power receiver outputting an AC signal to the midpoint of a first bridge arm and a second bridge arm in response to wireless power transmission; a controller controlling the first bridge arm, the second bridge arm, the first switch, and the second switch in response to a positive half-cycle signal of the AC signal, outputting the positive half-cycle signal to a processing unit, so that the processing unit charges the battery in response to the positive half-cycle signal; and the controller controlling the first bridge arm, the second bridge arm, the first switch, and the second switch in response to a negative half-cycle signal of the AC signal, converting the negative half-cycle signal into a positive signal and outputting it to the processing unit, so that the processing unit responds to... A positive signal is used to charge the battery. The power receiver is connected to the midpoint of the first bridge arm and also to the midpoint of the second bridge arm. The first terminal of the first switch is connected to the first transmission terminal of the processing unit, the second terminal of the first switch is connected to the ground terminal, and the control terminal of the first switch is connected to the controller. The first terminal of the second switch is connected to the second transmission terminal of the processing unit, the second terminal of the second switch is connected to the ground terminal, and the control terminal of the second switch is connected to the controller. The first bridge arm is also connected to the first transmission terminal, the third transmission terminal of the processing unit, and the controller, respectively. The second bridge arm is also connected to the second transmission terminal, the fourth transmission terminal of the processing unit, and the controller, respectively. The first, second, third, and fourth transmission terminals are all different. The output terminal of the processing unit is used to connect to the battery. Therefore, the charging management circuit provided in this embodiment uses fewer components to achieve charging, thereby reducing energy loss during charging and improving battery charging efficiency.

[0030] Optionally, in response to a positive half-cycle signal of an AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to output the positive half-cycle signal to the processing unit includes: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the processing unit to switch between a first state, a second state, a third state, and a fourth state; wherein 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch respectively, and the second electrode of the first bridge arm switch... The first pole of the second bridge arm switch is connected to the third transmission terminal; 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 first transmission terminal, and the second pole of the second bridge arm switch is also connected to the positive terminal of the power receiver; the second bridge arm includes: a third bridge arm switch and a fourth bridge arm switch, the control pole of the third bridge arm switch is connected to the controller, the first pole of the third bridge arm switch is connected to the negative terminal of the power receiver and the second pole of the fourth bridge arm switch respectively, and the second pole of the third bridge arm switch is connected to the fourth transmission terminal; the control pole of the fourth bridge arm switch is connected to the controller, the first pole of the fourth bridge arm switch is connected to the second transmission terminal, and the second pole of the fourth bridge arm switch is also connected to the negative terminal of the power receiver; the first mode includes: the second bridge arm switch The second mode includes a mode where both the first and fourth bridge arm switches are on. The processing unit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor. The control electrode of the third switch is connected to the controller, and the first electrode of the third switch is connected to the second electrode of the fourth switch, the first electrode of the fifth switch, and the first electrode of the second capacitor. The second electrode of the third switch is connected to the first electrode of the first switch and the second electrode of the first capacitor. The control electrode of the fourth switch is connected to the controller, and the first electrode of the fourth switch is connected to the second electrode of the fourth switch, the first electrode of the fifth switch, and the first electrode of the second capacitor. The second pole of the three-arm switch is connected to the first pole of the third capacitor; the second pole of the fourth switch is also connected to the first pole of the second capacitor; the control pole of the fifth switch is connected to the controller; the first pole of the fifth switch is also connected to the first pole of the second capacitor; the second pole of the fifth switch is connected to the battery, the first pole of the sixth switch, the second pole of the ninth switch, and the first pole of the tenth switch; the control pole of the sixth switch is connected to the controller; the first pole of the sixth switch is also connected to the battery; the second pole of the sixth switch is connected to the second pole of the second capacitor and the first pole of the seventh switch; the control pole of the seventh switch is connected to the controller; the first pole of the seventh switch is also connected to the second pole of the second capacitor; the second pole of the seventh switch is connected to the ground terminal.The control electrode of the eighth switch is connected to the controller. The first electrode of the eighth switch is connected to the first electrode of the first capacitor and the second electrode of the first bridge arm switch. The second electrode of the eighth switch is connected to the first electrode of the fourth capacitor, the first electrode of the ninth switch, and the first electrode of the twelfth switch. The control electrode of the ninth switch is connected to the controller. The first electrode of the ninth switch is also connected to the first electrode of the fourth capacitor, and the second electrode of the ninth switch is also connected to the battery. The control electrode of the tenth switch is connected to the controller. The first electrode of the tenth switch is also connected to the battery. The second electrode of the tenth switch is connected to the second electrode of the fourth capacitor and the first electrode of the eleventh switch. The control electrode of the eleventh switch is connected to the controller. The first electrode of the eleventh switch is also connected to the second electrode of the fourth capacitor, and the second electrode of the eleventh switch is connected to the ground terminal. The control electrode of the twelfth switch is connected to the controller. The connection is as follows: the first terminal of the twelfth switch is also connected to the first terminal of the fourth capacitor, and the second terminal of the twelfth switch is connected to the second terminal of the third capacitor and the first terminal of the second switch. The first state includes: the first, second, fourth, sixth, eighth, and tenth switches are all on; the second state includes: the second, third, fifth, seventh, ninth, and eleventh switches are all on; the third state includes: the first, second, fifth, seventh, eighth, and tenth switches are all on; the fourth state includes: the second, third, fourth, sixth, ninth, and eleventh switches are all on; the first mode includes: the first state and the second state; the second mode includes: the second state, the third state, and the fourth state. Thus, through the coordinated operation of the two bridge arms, the first switch, the second switch, and the processing unit, the battery can be charged based on the positive half-cycle signal.

[0031] Optionally, in response to the negative half-cycle signal of the AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to convert the negative half-cycle signal into a positive signal and output it to the processing unit includes: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the processing unit to switch between a first state, a fifth state, a sixth state, and a seventh state; wherein, the third mode includes: a mode in which both the second bridge arm switch and the third bridge arm switch are turned on; the fourth state includes: a state in which the second switch, the third switch, the fourth switch, the sixth switch, the ninth switch, and the eleventh switch are all turned on; the fifth state includes: a state in which the first switch, the fifth switch, the seventh switch, the ninth switch, the eleventh switch, and the twelfth switch are all turned on; the sixth state includes: a state in which the first switch, the second switch, the fourth switch, the sixth switch, the ninth switch, and the eleventh switch are all turned on; the seventh state includes: a state in which the first switch, the fifth switch, the seventh switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on; the first mode also includes the fifth state, and the third mode includes: the fifth state, the sixth state, and the seventh state. In this way, through the coordinated operation of the two bridge arms, the first switch, the second switch, and the processing unit, the battery can be charged based on the negative half-cycle signal.

[0032] Optionally, in response to a positive half-cycle signal of an AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to output the positive half-cycle signal to the processing unit includes: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state; wherein 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch respectively, and the second electrode of the first bridge arm switch is connected to the third transmission terminal; the control electrode of the second bridge arm switch... The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal, and the second electrode of the second bridge arm switch is also connected to the positive terminal 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 connected to the negative terminal of the power receiver and the second electrode of the fourth bridge arm switch, respectively. The second electrode of the third bridge arm switch is connected to the fourth transmission terminal. 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 second transmission terminal, and the second electrode of the fourth bridge arm switch is also connected to the negative terminal of the power receiver. The first mode includes a mode where both the second and fourth bridge arm switches are on. The second mode includes a mode where both the first and fourth bridge arm switches are on. The processing unit includes a first circuit, comprising: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, a first capacitor, a second capacitor, and a third capacitor. The control electrode of the third switch is connected to the controller. The first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor. The second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller. The first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor. The second electrode of the fourth switch is connected to the first electrode of the third capacitor and the first electrode of the eighth switch. The fifth switch is connected to the controller; the first terminal of the fifth switch is also connected to the first terminal of the second capacitor; the second terminal of the fifth switch is connected to the battery, the first terminal of the sixth switch, the first terminal of the ninth switch, and the second terminal of the eighth switch; the sixth switch is connected to the controller; the first terminal of the sixth switch is also connected to the battery; the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch; the seventh switch is connected to the controller; the first terminal of the seventh switch is also connected to the second terminal of the second capacitor; the second terminal of the seventh switch is connected to the ground terminal; the eighth switch is connected to the controller; the first terminal of the eighth switch is also connected to the first terminal of the third capacitor; the second terminal of the eighth switch is also connected to the battery.The control electrode of the ninth switch is connected to the controller, and the first electrode of the ninth switch is also connected to the battery. The second electrode of the ninth switch is connected to the second electrode of the third capacitor and the first electrode of the tenth switch. The control electrode of the tenth switch is connected to the controller, and the first electrode of the tenth switch is also connected to the second electrode of the third capacitor. The second electrode of the tenth switch is connected to the ground terminal. The first state includes: the first, second, fourth, fifth, seventh, and ninth switches are all on. The second state includes: the second, third, fifth, seventh, eighth, and tenth switches are all on. The third state includes: the second, third, sixth, eighth, and tenth switches are all on. The first mode includes: the first state and the second state. The second mode includes: the first state, the second state, and the third state. Thus, through the coordinated operation of the two bridge arms, the first switch, the second switch, and the processing unit, the battery can be charged based on the positive half-cycle signal.

[0033] Optionally, in response to the negative half-cycle signal of the AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to convert the negative half-cycle signal into a positive signal and output it to the processing unit includes: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; wherein 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch respectively, and the second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller, the first electrode of the second bridge arm switch is connected to the first transmission terminal, and the second electrode of the second bridge arm switch is also connected to the positive terminal 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 connected to the negative terminal of the power receiver and the second electrode of the fourth bridge arm switch, and the second electrode of the third bridge arm switch is connected to the fourth transmission terminal. 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 second transmission terminal, and the second electrode of the fourth bridge arm switch is also connected to the negative terminal of the power receiver. The first mode includes a mode where both the second and fourth bridge arm switches are on, and a third mode... Includes: a mode where both the second and third bridge arm switches are on; the processing unit includes a second circuit, which includes: 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 electrode of the eleventh switch is connected to the controller, the first electrode of the eleventh switch is connected to the first electrode of the thirteenth switch and the first electrode of the fifth capacitor, and the second electrode of the eleventh switch is connected to the first electrode of the second switch, the second electrode of the fourth capacitor, and the first electrode of the fourth bridge arm switch; the control electrode of the twelfth switch is connected to the controller, and the first electrode of the twelfth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the fourth capacitor. One pole is connected; the second pole of the twelfth switch is connected to the first pole of the sixth capacitor and the first pole of the sixteenth switch, respectively; the control pole of the thirteenth switch is connected to the controller; the first pole of the thirteenth switch is also connected to the first pole of the fifth capacitor; the second pole of the thirteenth switch is connected to the battery, the first pole of the fourteenth switch, the first pole of the seventeenth switch, and the second pole of the sixteenth switch, respectively; the control pole of the fourteenth switch is connected to the controller; the first pole of the fourteenth switch is also connected to the battery; the second pole of the fourteenth switch is connected to the second pole of the fifth capacitor and the first pole of the fifteenth switch, respectively; the control pole of the fifteenth switch is connected to the controller; the first pole of the fifteenth switch is also connected to the second pole of the fifth capacitor; the second pole of the fifteenth switch is connected to the ground terminal.The control electrode of the sixteenth switch is connected to the controller, the first electrode of the sixteenth switch is also connected to the first electrode of the sixth capacitor, and the second electrode of the sixteenth switch is also connected to the battery. The control electrode of the seventeenth switch is connected to the controller, the first electrode of the seventeenth switch is also connected to the battery, and the second electrode of the seventeenth switch is connected to the second electrode of the sixth capacitor and the first electrode of the eighteenth switch. The control electrode of the eighteenth switch is connected to the controller, the first electrode of the eighteenth switch is also connected to the second electrode of the sixth capacitor, and the second electrode of the eighteenth switch is connected to the ground terminal. The fourth state includes: the first, second, twelfth, thirteenth, fifteenth, and seventeenth switches are all on. The fifth state includes: the first, eleventh, thirteenth, fifteenth, sixteenth, and eighteenth switches are all on. The sixth state includes: the first, eleventh, fourteenth, sixteenth, and eighteenth switches are all on. The first mode includes: the fourth and fifth states. The third mode includes: the fourth, fifth, and sixth states. Thus, through the coordinated operation of the two bridge arms, the first switch, the second switch, and the processing unit, the battery can be charged based on the negative half-cycle signal.

[0034] Optionally, in response to a positive half-cycle signal of an AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to output the positive half-cycle signal to the processing unit includes: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state; wherein 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch respectively, and the second electrode of the first bridge arm switch is connected to the third transmission terminal; the control electrode of the second bridge arm switch... The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal, and the second electrode of the second bridge arm switch is also connected to the positive terminal 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 connected to the negative terminal of the power receiver and the second electrode of the fourth bridge arm switch, respectively. The second electrode of the third bridge arm switch is connected to the fourth transmission terminal. 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 second transmission terminal, and the second electrode of the fourth bridge arm switch is also connected to the negative terminal of the power receiver. The first mode includes a mode where both the second and fourth bridge arm switches are on. The second mode includes a mode where both the first and fourth bridge arm switches are on. The system operates in a mode where all switches are on. The processing unit includes a first circuit comprising: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor. The control electrode of the third switch is connected to the controller. The first electrode of the third switch is connected to the second electrode of the fifth switch, the first electrode of the sixth switch, and the battery. The second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller. The first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor. The second electrode of the fourth switch is connected to the first electrode of the second capacitor and the first electrode of the fifth switch. The control electrode of the fifth switch is connected to the controller. The first terminal of the fifth switch is also connected to the first 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 also connected to the battery, and the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch respectively; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the second terminal of the second capacitor, and the second terminal of the seventh switch is connected to the ground terminal; the first state includes: the state in which the first switch, second switch, fifth switch, and seventh switch are all on; the second state includes: the state in which the second switch, third switch, fifth switch, and seventh switch are all on; the third state includes: the state in which the first switch, second switch, fourth switch, and sixth switch are all on;The first mode includes: a first state and a second state; the second mode includes: a second state and a third state. Thus, through the coordinated operation of the two bridge arms, the first switch, the second switch, and the processing unit, the battery can be charged based on the positive half-cycle signal.

[0035] Optionally, in response to the negative half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to convert the negative half-cycle signal into a positive signal and output it to the processing unit. This includes: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state. 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller, the first electrode of the second bridge arm switch is connected to the first transmission terminal, and the second electrode of the second bridge arm switch is also connected to the positive terminal 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 connected to the negative terminal of the power receiver and the second electrode of the fourth bridge arm switch respectively, and the second electrode of the third bridge arm switch is connected to the fourth transmission terminal; 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 second transmission terminal, and the second electrode of the fourth bridge arm switch is also connected to the negative terminal of the power receiver; the first mode includes: a mode in which both the second and fourth bridge arm switches are on, and the third mode includes The second and third bridge arm switches are both conducting. The processing unit includes a second circuit, which includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor. The control electrode of the eighth switch is connected to the controller. The first electrode of the eighth switch is connected to the second electrode of the tenth switch, the first electrode of the eleventh switch, and the battery. The second electrode of the eighth switch is connected to the first electrode of the second switch, the second electrode of the third capacitor, and the first electrode of the fourth bridge arm switch. The control electrode of the ninth switch is connected to the controller. The first electrode of the ninth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor. The second electrode of the ninth switch is connected to the first electrode of the fourth capacitor and the first electrode of the tenth switch. One pole connection; the control pole of the tenth switch is connected to the controller, the first pole of the tenth switch is also connected to the first pole of the fourth capacitor, and the second pole of the tenth switch is also connected to the battery; the control pole of the eleventh switch is connected to the controller, the first pole of the eleventh switch is also connected to the battery, and the second pole of the eleventh switch is connected to the second pole of the fourth capacitor and the first pole of the twelfth switch respectively; the control pole of the twelfth switch is connected to the controller, the first pole of the twelfth switch is also connected to the second pole of the fourth capacitor, and the second pole of the twelfth switch is connected to the ground terminal; the fourth state includes: the state in which the first switch, the second switch, the tenth switch, and the twelfth switch are all turned on; the fifth state includes: the state in which the first switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on;The sixth state includes a state where the first, second, ninth, and eleventh switches are all on; the first mode includes the fourth and fifth states; the third mode includes the fifth and sixth states. Thus, through the coordinated operation of the two bridge arms, the first and second switches, and the processing unit, the battery can be charged based on the negative half-cycle signal.

[0036] Optionally, in response to a positive half-cycle signal of an AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to output the positive half-cycle signal to the processing unit includes: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state; wherein 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch respectively, and the second electrode of the first bridge arm switch is connected to the third transmission terminal; the control electrode of the second bridge arm switch... The second bridge arm switch is connected to the controller. Its first pole is connected to the first transmission terminal, and its second pole is also connected to the positive terminal of the power receiver. The second bridge arm includes a third bridge arm switch and a fourth bridge arm switch. The control pole of the third bridge arm switch is connected to the controller. Its first pole is connected to the negative terminal of the power receiver and the second pole of the fourth bridge arm switch, respectively. The second pole of the third bridge arm switch is connected to the fourth transmission terminal. The control pole of the fourth bridge arm switch is connected to the controller. Its first pole is connected to the second transmission terminal, and its second pole is also connected to the negative terminal of the power receiver. The first mode includes a mode where both the second and fourth bridge arm switches are on. The second mode includes a mode where both the first and fourth bridge arm switches are on. The circuit operates in the following mode: the processing unit includes a first circuit, which comprises a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor. The control electrode of the third switch is connected to the controller; the first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor; the second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller; the first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor; the second electrode of the fourth switch is connected to the battery, the second circuit, the second electrode of the fifth switch, and the first electrode of the sixth switch. The control electrode of the fifth switch is connected to the controller. The first terminal of the fifth switch is also connected to the first 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 also connected to the battery, and the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch respectively; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the second terminal of the second capacitor, and the second terminal of the seventh switch is connected to the ground terminal; the first state includes: the state in which the first, second, fourth, fifth, and seventh switches are all turned on; the second state includes: the state in which the second, third, fifth, and seventh switches are all turned on; the third state includes: the state in which the second, third, and sixth switches are all turned on;The first mode includes a first state; the second mode includes a first state, a second state, and a third state. Thus, through the coordinated operation of the two bridge arms, the first switch, the second switch, and the processing unit, the battery can be charged based on the positive half-cycle signal.

[0037] Optionally, in response to the negative half-cycle signal of the AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to convert the negative half-cycle signal into a positive signal and output it to the processing unit includes: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; wherein 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch respectively, and the second electrode of the first bridge arm switch is connected to the third transmission terminal; the second bridge arm... The control electrode of the first bridge arm switch is connected to the controller, the first electrode of the second bridge arm switch is connected to the first transmission terminal, and the second electrode of the second bridge arm switch is also connected to the positive terminal 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 connected to the negative terminal of the power receiver and the second electrode of the fourth bridge arm switch respectively, and the second electrode of the third bridge arm switch is connected to the fourth transmission terminal; 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 second transmission terminal, and the second electrode of the fourth bridge arm switch is also connected to the negative terminal of the power receiver; the first mode includes: a mode in which both the second and fourth bridge arm switches are on, and the third mode includes: the second bridge arm... The processing unit includes a second circuit, comprising: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor. The control electrode of the eighth switch is connected to the controller; the first electrode of the eighth switch is connected to the first electrode of the tenth switch and the first electrode of the fourth capacitor; the second electrode of the eighth switch is connected to the first electrode of the second switch, the second electrode of the third capacitor, and the first electrode of the fourth bridge arm switch. The control electrode of the ninth switch is connected to the controller; the first electrode of the ninth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor; the second electrode of the ninth switch is connected to the battery, the second electrode of the tenth switch, the first electrode of the eleventh switch, and the first circuit. The control electrode of the tenth switch is connected to the controller, the first electrode of the tenth switch is also connected to the first electrode of the fourth capacitor, and the second electrode of the tenth switch is also connected to the battery; the control electrode of the eleventh switch is connected to the controller, the first electrode of the eleventh switch is also connected to the battery, and the second electrode of the eleventh switch is connected to the second electrode of the fourth capacitor and the first electrode of the twelfth switch respectively; the control electrode of the twelfth switch is connected to the controller, the first electrode of the twelfth switch is also connected to the second electrode of the fourth capacitor, and the second electrode of the twelfth switch is connected to the ground terminal; the fourth state includes: the state in which the first, second, ninth, tenth, and twelfth switches are all turned on; the fifth state includes: the state in which the first, eighth, tenth, and twelfth switches are all turned on;The sixth state includes a state where the first, eighth, and eleventh switches are all on; the first mode includes the fourth state; the third mode includes the fourth, fifth, and sixth states. Thus, through the coordinated operation of the two bridge arms, the first switch, the second switch, and the processing unit, the battery can be charged based on the negative half-cycle signal.

[0038] It should be understood that since the principle of this charging method in solving the problem is similar to that of the aforementioned charging management circuit, the implementation and technical effects of this charging method can be found in the implementation and technical effects of the aforementioned charging management circuit, and the repetition will not be repeated. Attached Figure Description

[0039] Figure 1 This is a schematic diagram illustrating an application scenario of the wireless charging system provided in the embodiments of this application;

[0040] Figure 2 This is a schematic diagram of the structure of the wireless charging system provided in the embodiments of this application;

[0041] Figure 3 This is a schematic diagram of a charging management circuit provided in an embodiment of this application;

[0042] Figure 4 This is a schematic diagram of another charging management circuit provided in an embodiment of this application;

[0043] Figure 5 for Figure 4 A schematic diagram illustrating the working principle of the structure shown;

[0044] Figure 6 This is a schematic diagram of another charging management circuit provided in an embodiment of this application;

[0045] Figure 7 for Figure 6 A schematic diagram illustrating the working principle of the structure shown;

[0046] Figure 8 This is a schematic diagram of another charging management circuit provided in an embodiment of this application;

[0047] Figure 9 for Figure 8 A schematic diagram illustrating the working principle of the structure shown;

[0048] Figure 10 This is a schematic diagram of another charging management circuit provided in an embodiment of this application;

[0049] Figure 11 for Figure 10 A schematic diagram illustrating the working principle of the structure shown;

[0050] Figure 12This is a schematic diagram of another charging management circuit provided in an embodiment of this application. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0052] It should be noted that the same reference numerals in the accompanying drawings of this application denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms expressing position and direction described in this application are illustrative based on the accompanying drawings, but may be modified as needed, and all such modifications are included within the scope of protection of this application. The accompanying drawings of this application are for illustrating relative positional relationships only and do not represent actual scale.

[0053] To facilitate understanding of the technical solutions provided in the embodiments of this application, the application scenarios will be explained first below.

[0054] The technical solution provided in this application can be applied to a wireless charging system. Compared with wired charging, wireless charging has advantages such as portability and ease of operation. Figure 1 An example of an application scenario for a wireless charging system is shown, with reference to Figure 1 As shown, when the receiving device approaches the charging device, the coil in the receiving device and the coil in the charging device undergo electromagnetic induction, and energy (or electrical energy, or wireless charging signal) is transferred from the charging device to the receiving device. The receiving device can include electronic devices, power banks, and other types of receiving devices. Electronic devices can be, but are not limited to, mobile phones, tablets, smart wearable devices, etc.; the charging device can be, but is not limited to, wireless chargers, wireless power banks, etc. It should be understood that a wireless power bank, which falls under the category of charging devices, can wirelessly charge the receiving device, so this type of wireless power bank can be considered a device that provides electrical energy; while a power bank, similar to a receiving device, can be charged by the charging device wirelessly, so this type of power bank can be considered a device that receives electrical energy. Of course, the same power bank can be classified as both a charging device providing electrical energy and a receiving device receiving electrical energy; it simply plays a different role in different application scenarios.

[0055] Figure 2 An exemplary schematic diagram of a wireless charging system is shown, with reference to... Figure 2As shown, the charging device may include an inverter and a transmitting coil, and the receiving device may include a charging management circuit and a battery. The charging management circuit may include a receiving coil, a rectifier, a linear regulator, an overvoltage protector, and a DC-DC converter, arranged in cascades. The inverter's input is connected to a DC power supply, converting the DC power output into AC power, which is then transmitted to the receiving coil via the transmitting coil. The receiving coil receives the AC power transmitted from the transmitting coil, converts it back to DC power via a rectifier, and then processes it sequentially through the linear regulator, overvoltage protector, and DC-DC converter before outputting it to the battery, thus charging the battery. It should be understood that... Figure 2 The charging device in this example is a wireless charger. Therefore, when charging a device, the charging device needs to be connected to a DC power source. If the wireless charging device is a wireless power bank, then it does not need to be connected to a DC power source when charging a device. The transmitting coil and receiving coil constitute an LC resonator. The transmitting coil can be considered as the power transmitter in the LC resonator, and the receiving coil can be considered as the power receiver in the LC resonator.

[0056] As the charging power of electronic products continues to increase, wired and wireless charging solutions are taking up larger and larger areas of the board, leading to limited board space and tight component placement. In high-power wireless charging scenarios, multi-level cascaded circuit solutions (such as...) are often employed. Figure 2 The cascaded structure shown (receiving coil, rectifier, linear regulator, overvoltage protector, and DC-DC converter) operates completely independently at each stage. Therefore, high-voltage capacitors are needed at the outputs of both the rectifier bridge and the linear regulator for filtering, resulting in a bulky wireless charging solution. Furthermore, the high losses and low charging efficiency due to the multi-stage circuitry affect fast charging speeds. It should be understood that, taking the rectifier as an example, the rectifier is not affected by the linear regulator, overvoltage protector, or DC-DC converter when processing the input signal. The rectifier does not require the participation of these components for signal processing, so it can operate independently and can be considered a single circuit. Similarly, the linear regulator, overvoltage protector, and DC-DC converter can all be considered independent circuits. The cascaded structure of these independent circuits can be called a multi-stage circuit, and each independent circuit can be considered a single stage.

[0057] To address the aforementioned issues, this application provides a charging management circuit. By configuring two bridge arms and establishing their connection to a DC-DC converter, the two bridge arms and the DC-DC converter work together to achieve AC-to-DC conversion. Therefore, the two bridge arms and the DC-DC converter do not operate independently but rather influence each other. The entire circuit consisting of the two bridge arms and the DC-DC converter can be considered a single stage. Thus, the charging management circuit in this application is a single-stage circuit scheme, and the losses generated during battery charging are single-stage losses. Compared to the multi-stage losses in multi-stage cascaded circuit schemes, this effectively reduces energy loss during charging and improves charging efficiency. Furthermore, compared to existing multi-stage cascaded circuit schemes, the charging management circuit in this application uses fewer components to charge the battery. From this perspective, it also reduces energy loss during charging and improves battery charging efficiency. Furthermore, the first bridge arm is not directly connected to the ground terminal but is connected to the ground terminal through the first switch. Similarly, the second bridge arm is connected to the ground terminal through the second switch. This reduces the voltage drop between the first and second bridge arms, thereby improving the withstand voltage performance of the charging management circuit and thus improving the reliability of the charging management circuit.

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the accompanying drawings are only used to illustrate the relative positional relationships or connection relationships between the components. Some components are drawn in an exaggerated manner for ease of understanding. The shapes and sizes of the components in the drawings do not reflect the actual proportional relationships.

[0059] Figure 3 An exemplary schematic diagram of a charging management circuit provided in an embodiment of this application is shown below. Figure 3 As shown, the charging management circuit may include: a power receiver ( Figure 3 (represented by AC in Chinese), first bridge arm, second bridge arm, DC-DC converter and controller, Figure 3 The controller is not shown in the diagram, so Figure 3 The connection relationships between each bridge arm and the controller are not shown in the diagram. The power receiver is connected to the midpoint of the first bridge arm (i.e., node P11) and the midpoint of the second bridge arm (i.e., node P12), respectively. The power receiver is used to output AC signals to the midpoints of the first and second bridge arms in response to the wireless transmission of electrical energy, that is, in response to the electrical energy wirelessly transmitted through the LC resonator. It should be understood that both the first and second bridge arms are bridge arms, and a bridge arm typically includes two bridge arm switches. The connection node between the two bridge arm switches can be regarded as the midpoint of the bridge arm.

[0060] The DC-DC converter may include: a first switch M1, a second switch M2, and a processing unit; the first terminal of the first switch M1 is connected to the first transmission terminal P1 of the processing unit, the second terminal of the first switch M1 is connected to the ground terminal GND, and the control terminal of the first switch M1 is connected to the controller; the first terminal of the second switch M2 is connected to the second transmission terminal P2 of the processing unit, the second terminal of the second switch M2 is connected to the ground terminal GND, and the control terminal of the second switch M2 is connected to the controller; the first bridge arm is also connected to the first transmission terminal P1, the third transmission terminal P3 of the processing unit, and the controller, respectively; the second bridge arm is also connected to the second transmission terminal P2, the fourth transmission terminal P4 of the processing unit, and the controller, respectively; the first transmission terminal P1 and the second transmission terminal P2 are connected to the first transmission terminal P1, the third transmission terminal P3 of the processing unit, and the controller, respectively. 2. Since the third transmission terminal P3 and the fourth transmission terminal P4 are different, two ends of the first bridge arm and two ends of the second bridge arm are respectively connected to different transmission terminals of the processing unit. Based on this, the controller is used to: control the first bridge arm, the second bridge arm, the first switch M1, and the second switch M2 in response to the positive half-cycle signal of the AC signal, and output the positive half-cycle signal to the processing unit; and control the first bridge arm, the second bridge arm, the first switch M1, and the second switch M2 in response to the negative half-cycle signal of the AC signal, and convert the negative half-cycle signal into a positive signal and output it to the processing unit. The output terminal of the processing unit is used to connect to the battery, and the processing unit is used to: charge the battery in response to the positive half-cycle signal; and charge the battery in response to the positive signal.

[0061] In other words, the AC signal includes a positive half-cycle signal and a negative half-cycle signal. The two bridge arms, the first switch M1 and the second switch M2 can transmit the positive half-cycle signal in the AC signal to the processing unit so that the processing unit can charge the battery based on the positive half-cycle signal. The two bridge arms, the first switch M1 and the second switch M2 can also convert the negative half-cycle signal in the AC signal to obtain the corresponding positive signal, and transmit the positive signal to the processing unit so that the processing unit can charge the battery based on the positive signal. In other words, the processing unit can charge the battery based on the positive half-cycle signal under the action of the two bridge arms, the first switch M1, and the second switch M2, and can also charge the battery based on the negative half-cycle signal under the action of the two bridge arms, the first switch M1, and the second switch M2. Therefore, through the coordinated operation of the processing unit, the two bridge arms, the first switch M1, and the second switch M2, the battery can be charged based on the AC signal, so that the DC-DC converter and the two bridge arms can play the role of AC to DC conversion. Therefore, the whole consisting of the two bridge arms and the DC-DC converter can be regarded as a single stage. Thus, the charging management circuit in this embodiment belongs to a single-stage circuit scheme. The loss generated when charging the battery is a single-stage loss. Compared with the multi-stage loss in the multi-stage circuit cascade scheme, it can effectively reduce the energy loss during charging and improve the charging efficiency.

[0062] On the other hand, when charging a battery wirelessly, existing technologies require the rectifier, filter capacitor, linear regulator, overvoltage protector, and DC-DC converter to all be working to achieve battery charging. However, in this embodiment, only the DC-DC converter and two bridge arms are needed to work together to charge the battery. Since the rectifier, linear regulator, and overvoltage protector each include multiple components, and the total number of components in the rectifier, linear regulator, and overvoltage protector is necessarily greater than the total number of components in the two bridge arms (i.e., the bridge arm switches mentioned later), assuming that the DC-DC converter in the prior art has the same structure as the DC-DC converter in this embodiment, then this embodiment uses fewer components to achieve charging, thereby reducing energy loss during charging and improving battery charging efficiency.

[0063] Furthermore, since the first bridge arm is not directly connected to the ground terminal GND but is connected to the ground terminal GND through the first switch M1, and similarly the second bridge arm is connected to the ground terminal GND through the second switch M2, the voltage drop between the first bridge arm and the second bridge arm can be reduced, thereby improving the withstand voltage performance of the charging management circuit and thus improving the reliability of the charging management circuit.

[0064] Among them, the positive terminal of the power receiver (i.e. Figure 3 The end shown in the diagram (+) is connected to the midpoint of the first bridge arm (i.e., node P11), and the negative terminal of the power receiver (i.e., Figure 3 Connect the end shown in the middle to the midpoint of the second bridge arm (i.e., node P12), as shown in the diagram. Figure 3 As shown in the diagram; alternatively, the positive terminal of the power receiver is connected to the midpoint of the second bridge arm (i.e., node P12), and the negative terminal of the power receiver is connected to the midpoint of the first bridge arm (i.e., node P11), but no diagram is provided. This article uses the example of the power receiver's positive terminal being connected to the midpoint of the first bridge arm (i.e., node P11) and the power receiver's negative terminal being connected to the midpoint of the second bridge arm (i.e., node P12) for illustration.

[0065] Reference 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 electrode of the first bridge arm switch Q1 is connected to the positive electrode of the power receiver (i.e., node P11) and the second electrode of the second bridge arm switch Q2. The second electrode of the first bridge arm switch Q1 is connected to the third transmission terminal P3 of the processing unit. The control electrode of the second bridge arm switch Q2 is connected to the controller. The first electrode of the second bridge arm switch Q2 is connected to the first transmission terminal P1 of the processing unit. The second electrode 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 electrode of the third bridge arm switch Q3 is connected to the negative electrode of the power receiver (i.e., node P12) and the second electrode of the fourth bridge arm switch Q4. The second electrode of the third bridge arm switch Q3 is connected to the fourth transmission terminal P4 of the processing unit. The control electrode of the fourth bridge arm switch Q4 is connected to the controller. The first electrode of the fourth bridge arm switch Q4 is connected to the second transmission terminal P2 of the processing unit. The second electrode of the fourth bridge arm switch Q4 is also connected to the negative electrode of the power receiver.

[0066] Reference Figure 4 As shown, the processing unit includes: 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 tenth switch M10, an eleventh switch M11, a twelfth switch M12, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4; the control terminal of the third switch M3 is connected to the controller, and the first terminal of the third switch M3 is connected to the second terminals of the fourth switch M4, the fifth switch M5, and the second capacitor C2, respectively; the second terminal of the third switch M3 is connected to the first terminal of the first switch M1 and the second terminal of the first capacitor C1, respectively; the control terminal of the fourth switch M4 is connected to the controller, and the first terminal of the fourth switch M4 is connected to the second terminal of the third bridge arm switch and the first terminal of the third capacitor C3, respectively; 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, and the first terminal of the fifth switch M5 is also connected to the first terminal of the second capacitor C2, respectively; the second terminal of the fifth switch M5 is connected to the battery (…). Figure 4(Not shown in the diagram) The first pole of the sixth switch M6, the second pole of the ninth switch M9, and the first pole of the tenth switch M10 are connected; the control pole of the sixth switch M6 is connected to the controller, the first pole of the sixth switch M6 is also connected to the battery, and the second pole of the sixth switch M6 is connected to the second pole of the second capacitor C2 and the first pole of the seventh switch M7; the control pole of the seventh switch M7 is connected to the controller, the first pole of the seventh switch M7 is also connected to the second pole of the second capacitor C2, and the second pole of the seventh switch M7 is connected to the ground terminal GND; the control pole of the eighth switch M8 is connected to the controller, the first pole of the eighth switch M8 is connected to the first pole of the first capacitor C1 and the second pole of the first bridge arm switch, and the second pole of the eighth switch M8 is connected to the first pole of the fourth capacitor C4, the first pole of the ninth switch M9, and the first pole of the twelfth switch M12; the ninth switch... The control terminal of switch M9 is connected to the controller. The first terminal of switch M9 is also connected to the first terminal of capacitor C4, and the second terminal of switch M9 is also connected to the battery. The control terminal of switch M10 is connected to the controller. The first terminal of switch M10 is also connected to the battery, and the second terminal of switch M10 is connected to the second terminal of capacitor C4 and the first terminal of switch M11. The control terminal of switch M11 is connected to the controller. The first terminal of switch M11 is also connected to the second terminal of capacitor C4, and the second terminal of switch M11 is connected to ground terminal GND. The control terminal of switch M12 is connected to the controller. The first terminal of switch M12 is also connected to the first terminal of capacitor C4, and the second terminal of switch M12 is connected to the second terminal of capacitor C3 and the first terminal of switch M2.

[0067] It should be understood that in this article, each switch and each bridge arm switch can be, but is not limited to, switching devices with control terminals such as field-effect transistors and bipolar transistors. The specific design can be tailored to actual needs and is not specifically limited here. Taking a field-effect transistor as an example, the control terminal serves as the gate, the first terminal as the source, and the second terminal as the drain.

[0068] based on Figure 4 The structure shown illustrates that the specific operation of the charging management circuit may include:

[0069] For positive half-cycle AC signals: the controller switches the processing unit between the first, second, third, and fourth states by controlling various switches. Furthermore, the controller controls the switches of each bridge arm, causing two bridge arms to operate sequentially in the first, second, and third modes, thus switching between the first and second modes. The first mode includes the first and second states; the second mode includes the second, third, and fourth states.

[0070] In the first state (mode 1) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fourth switch M4, the sixth switch M6, the eighth switch M8, and the tenth switch M10 are on, and all other switches in the processing unit are off. At this time, combined with... Figure 5 In Mode 1, resistor R0 represents the battery. Capacitors C1, C2, C3, and C4, along with resistor R0, are disconnected from the power receiver (represented by AC). Capacitor C1 discharges into resistor R0. Capacitors C2 and C3 are connected in series and then in parallel with resistor R0, so Vb = Vc2 + Vc3. Also, capacitors C1 and C4 are connected in series and then in parallel with resistor R0, so Vb = Vc1 + Vc4. Based on this, we can derive Vc2 = Vc4 (Equation 1) and Vc1 = Vc3 (Equation 2). It is worth noting that when Mode 1 first appears in the processing unit, capacitor C1 has no stored energy, so Vb is approximately 0V. However, as the processing unit cycles through different modes, when Mode 1 appears later, capacitor C1 has stored energy, allowing it to charge resistor R0, at which point Vb = Vc2 + Vc3.

[0071] In the second state (mode 2) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fifth switch M5, the seventh switch M7, the ninth switch M9, and the eleventh switch M11 are on, and all other switches in the processing unit are off. At this time, combined with... Figure 5 In mode 2 as shown, the second capacitor C2, the fourth capacitor C4, the resistor R0, and the power receiver (denoted by AC) are connected in parallel, so V AC =Vc2=Vc4=Vb.

[0072] In the third state (mode 3) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fifth switch M5, the seventh switch M7, the eighth switch M8, and the tenth switch M10 are on, and all other switches in the processing unit are off. At this time, combined with... Figure 5 In mode 3, the second capacitor C2 and resistor R0 are connected in parallel and then in series with the fourth capacitor C4 to form a whole. This whole is then connected in parallel with the first capacitor C1 and the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1, Vc1 = Vc4 + Vb (i.e., relation 3), Vc2 = Vb (i.e., relation 4), combining the above relations 1 to 4, we can obtain VAC =2Vb.

[0073] In the second state (mode 4) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fifth switch M5, the seventh switch M7, the ninth switch M9, and the eleventh switch M11 are all on, and all other switches in the processing unit are off. At this time, combined with... Figure 5 In mode 4, the second capacitor C2, the fourth capacitor C4, and the resistor R0 are connected in parallel and then in series with the first capacitor C1 to form a whole. This whole is then connected in parallel with the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1 + Vc2, Vc2 = Vc4 = Vb (i.e., relation 5), combining relations 1 to 5, we can derive V AC =3Vb.

[0074] In the fourth state (mode 5) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fourth switch M4, the sixth switch M6, the ninth switch M9, and the eleventh switch M11 are all on, and all other switches in the processing unit are off. At this time, combined with... Figure 5 In mode 5, the fourth capacitor C4 and resistor R0 are connected in parallel and then in series with the second capacitor C2 to form a first unit. This first unit is connected in parallel with the third capacitor C3 and then in series with the first capacitor C1 to form a second unit. This second unit is then connected in parallel with the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1 + Vc2 + Vb, combined with relations 1 to 5, we can derive V AC =4Vb.

[0075] In modes 1 to 5, since the power receiver, represented by AC, receives a positive half-cycle signal during this period, by grounding the negative terminal of the power receiver, under the action of the two bridge arms, the first switch M1, and the second switch M2, the signal transmitted to each capacitor and the resistor R0 used to represent the battery can be a positive half-cycle signal, thereby charging the battery based on the positive half-cycle signal.

[0076] Therefore, in mode 1, the charging voltage Vb supplied to the battery is approximately the sum of the voltages of the second capacitor C2 and the third capacitor C3; in mode 2, the charging voltage Vb supplied to the battery is approximately the positive half-cycle signal of the AC signal; in mode 3, the charging voltage Vb supplied to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; in mode 4, the charging voltage Vb supplied to the battery is approximately 1 / 3 of the positive half-cycle signal of the AC signal; and in mode 5, the charging voltage Vb supplied to the battery is approximately 1 / 4 of the positive half-cycle signal of the AC signal.

[0077] Combination Figure 5 As shown, in response to a positive half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the processing unit operates sequentially in modes 1, 2, 3, 4, 5, 4, 3, 2, and 1. Specifically, during the process of the signal increasing from 0 to its maximum value in the positive half-cycle signal, the entire system operates sequentially in modes 1, 2, 3, 4, and 5; conversely, during the process of the signal decreasing from its maximum value to 0, the entire system operates sequentially in modes 5, 4, 3, 2, and 1. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0078] For the negative half-cycle of the AC signal: the controller controls various switches to switch the processing unit between the first, fifth, sixth, and seventh states. Furthermore, the controller controls various bridge arm switches to make two bridge arms operate sequentially in the first mode, the third mode, and the first mode, thus switching between the first and third modes. The first mode includes the first and fifth states, and the third mode includes the fifth, sixth, and seventh states.

[0079] In the first state (mode 6) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off. The first switch M1, the second switch M2, the fourth switch M4, the sixth switch M6, the eighth switch M8, and the tenth switch M10 are all on, while all other switches in the processing unit are off. At this time, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 5 The connection relationship is shown in mode 6.

[0080] In the fifth state (mode 7) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the fifth switch M5, the seventh switch M7, the ninth switch M9, the eleventh switch M11, and the twelfth switch M12 are on, while all other switches in the processing unit are off; at this time, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 5 The connection relationship is shown in mode 7.

[0081] In the sixth state (mode 8) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off; the first switch M1, the second switch M2, the fourth switch M4, the sixth switch M6, the ninth switch M9, and the eleventh switch M11 are all on, while the other switches in the processing unit are off; at this time, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 5 The connection relationship is shown in mode 8.

[0082] In the fifth state (mode 9) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off; the first switch M1, the fifth switch M5, the seventh switch M7, the ninth switch M9, the eleventh switch M11, and the twelfth switch M12 are all on, while the other switches in the processing unit are off; at this time, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 5 The connection relationship is shown in mode 9.

[0083] In the seventh state (mode 10) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off; the first switch M1, the fifth switch M5, the seventh switch M7, the eighth switch M8, the tenth switch M10, and the twelfth switch M12 are on, while all other switches in the processing unit are off; at this time, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 5 The connection relationship shown in mode 10.

[0084] In modes 6 to 10, since the power receiver (represented by AC) receives a negative half-cycle signal during this period, by grounding the positive terminal of the power receiver, and with the action of the two bridge arms, the first switch M1, and the second switch M2, the negative half-cycle signal can be converted into a corresponding positive signal. This results in positive signals being transmitted to the capacitors and the resistor R0 representing the battery, thus enabling battery charging based on the positive signal. Furthermore, combined with the processes described in modes 1 to 5, the coordinated operation of the two bridge arms, the first switch M1, and the second switch M2 can convert the AC signal received by the power receiver into a DC signal before transmitting it to the processing unit, thereby achieving AC-to-DC conversion.

[0085] Similarly, based on the fact that the processing unit operates in a similar manner to that in a positive half-cycle signal, in mode 6, the charging voltage Vb supplied to the battery is approximately the sum of the voltages of the first capacitor C1 and the fourth capacitor C4; in mode 7, the charging voltage Vb supplied 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 supplied 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 supplied to the battery is approximately 1 / 3 of the positive signal corresponding to the negative half-cycle signal in the AC signal; and in mode 10, the charging voltage Vb supplied to the battery is approximately 1 / 4 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0086] Based on this, combined Figure 5 As shown, in response to the positive signal corresponding to the negative half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the processing unit operates sequentially in modes 6, 7, 8, 9, 10, 9, 8, 7, and 6. Specifically, during the process of increasing the signal value from 0 to its maximum value in the positive signal, the entire system consists of the two bridge arms, the first switch M1, the second switch M2, and the processing unit operating sequentially in modes 6, 7, 8, 9, and 10; conversely, during the process of decreasing the signal value from its maximum value to 0, the entire system consists of the two bridge arms, the first switch M1, the second switch M2, and the processing unit operating sequentially in modes 10, 9, 8, 7, and 6. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0087] In summary, based on the above description of the processing procedures for positive and negative half-cycle signals, in V AC When Vb = 4Vb, it can be converted to Vb = 1 / 4V. ACThis achieves a charging voltage Vb supplied to the battery that is 1 / 4 of the input AC signal voltage. Furthermore, there are five modes in the positive half-cycle signal and five modes in the negative half-cycle signal. This makes the charging curve formed by the charging voltage supplied to the battery closer to the sine wave curve of the AC signal, thereby further improving charging efficiency. In addition, in this embodiment, the same processing unit is used to process the positive and negative half-cycle signals respectively, realizing circuit structure reuse. This not only simplifies the structure of the processing unit and reduces its manufacturing cost, but also reduces the footprint of the wireless circuit receiving circuit, achieving miniaturization.

[0088] It should be understood that in the structure described above, the controller involved can be the same controller, that is, one controller controls each bridge arm; or, in the structure described above, the controller involved can be different controllers, that is, multiple controllers control each bridge arm. The specific design can be tailored to actual needs and is not specifically limited here. The specific structure of the controller can be any device well-known to those skilled in the art capable of implementing control functions, such as, but not limited to, microcontrollers, FPGAs (Field Programmable Gate Arrays), central processing units, etc., and is not limited here.

[0089] Figure 6 An exemplary schematic diagram of a charging management circuit provided in an embodiment of this application is shown below. Figure 6 As shown, the charging management circuit in this embodiment is similar to that in the previous embodiments. Figure 4 The charging management circuits shown are basically similar in structure, differing only in the structure of the processing unit. For example, refer to... Figure 6 As shown, the processing unit includes: a first circuit and a second circuit, wherein the first circuit is connected to the first terminal of the first switch M1, the second terminal of the first bridge arm switch Q1, the first terminal of the second bridge arm switch Q2, and the battery ( Figure 6 (Not shown in the diagram) The first circuit is used to charge the battery in response to a positive half-cycle signal. The second circuit is connected to the first terminal of the second switch M2, the second terminal of the third bridge arm switch Q3, the first terminal of the fourth bridge arm switch Q4, and the battery. The second circuit is used to charge the battery in response to a positive signal. Therefore, the processing unit in this embodiment can be regarded as a circuit structure with a dual-phase structure, where one phase acts as the first circuit to process the positive half-cycle signal alone, and the other phase acts as the second circuit to process the negative half-cycle signal alone. This allows for alternating charging of the battery based on the positive and negative half-cycle signals, reducing current ripple during charging and improving charging efficiency.

[0090] The first circuit includes: 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 tenth switch M10, a first capacitor C1, a second capacitor C2, and a 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 connected to the first terminal of the fifth switch M5 and the first terminal of the second capacitor C2. The second terminal of the third switch M3 is connected to the first terminal of the first switch M1, the second terminal of the first capacitor C1, and the first terminal of the second bridge arm switch Q2. The control terminal of the fourth switch M4 is connected to the controller. The first terminal of the fourth switch M4 is connected to the second terminal of the first bridge arm switch Q1 and the first terminal of the first capacitor C1. The second terminal of the fourth switch M4 is connected to the first terminal of the third capacitor C3 and the first terminal of the eighth switch M8. The control terminal of the fifth switch M5 is connected to the controller. The first terminal of the fifth switch M5 is also connected to the first terminal of the second capacitor C2. The second terminal of the fifth switch M5 is connected to the battery and the first terminal of the sixth switch M6. The first pole of the ninth switch M9 is connected to the second pole of the eighth switch M8; the control pole of the sixth switch M6 is connected to the controller, the first pole of the sixth switch M6 is also connected to the battery, and the second pole of the sixth switch M6 is connected to the second pole of the second capacitor C2 and the first pole of the seventh switch M7; the control pole of the seventh switch M7 is connected to the controller, the first pole of the seventh switch M7 is also connected to the second pole of the second capacitor C2, and the second pole of the seventh switch M7 is connected to the ground terminal GND; the control pole of the eighth switch M8 is connected to the controller, the first pole of the eighth switch M8 is also connected to the first pole of the third capacitor C3, and the second pole of the eighth switch M8 is also connected to the battery; the control pole of the ninth switch M9 is connected to the controller, the first pole of the ninth switch M9 is also connected to the battery, and the second pole of the ninth switch M9 is connected to the second pole of the third capacitor C3 and the first pole of the tenth switch M10; the control pole of the tenth switch M10 is connected to the controller, the first pole of the tenth switch M10 is also connected to the second pole of the third capacitor C3, and the second pole of the tenth switch M10 is connected to the ground terminal GND.

[0091] The second circuit includes: eleventh switch M11, twelfth switch M12, thirteenth switch M13, fourteenth switch M14, fifteenth switch M15, sixteenth switch M16, seventeenth switch M17, eighteenth switch M18, fourth capacitor C4, fifth capacitor C5, and sixth capacitor C6; 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 first terminal of the thirteenth switch M13 and the first terminal of the fifth capacitor C5, and the second terminal of the eleventh switch M11 is connected to the first terminal of the second switch M2 and the first terminal of the fourth capacitor C4. The first terminal of the second-phase switch and the fourth bridge arm switch Q4 are connected; the control terminal of the twelfth switch M12 is connected to the controller, and the first terminal of the twelfth switch M12 is connected to the second terminal of the third bridge arm switch Q3 and the first terminal of the fourth capacitor C4, respectively. The second terminal of the twelfth switch M12 is connected to the first terminal of the sixth capacitor C6 and the first terminal of the sixteenth switch M16, respectively. The control terminal of the thirteenth switch M13 is connected to the controller, and the first terminal of the thirteenth switch M13 is also connected to the first terminal of the fifth capacitor C5. The second terminal of the thirteenth switch M13 is connected to the battery and the first terminal of the fourteenth switch M14, respectively. The first terminal of the seventeenth switch M17 and the second terminal of the sixteenth switch M16 are connected; 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 battery, and the second terminal of the fourteenth switch M14 is connected to the second terminal of the fifth capacitor C5 and the first terminal of the fifteenth switch M15; the control terminal of the fifteenth switch M15 is connected to the controller, the first terminal of the fifteenth switch M15 is also connected to the second terminal of the fifth capacitor C5, and the second terminal of the fifteenth switch M15 is connected to the ground terminal GND; the control terminal of the sixteenth switch M16 is connected to the controller. Then, the first terminal of the sixteenth switch M16 is also connected to the first terminal of the sixth capacitor C6, and the second terminal of the sixteenth switch M16 is also connected to the battery; the control terminal of the seventeenth switch M17 is connected to the controller, the first terminal of the seventeenth switch M17 is also connected to the battery, and the second terminal of the seventeenth switch M17 is connected to the second terminal of the sixth capacitor C6 and the first terminal of the eighteenth switch M18 respectively; the control terminal of the eighteenth switch M18 is connected to the controller, the first terminal of the eighteenth switch M18 is also connected to the second terminal of the sixth capacitor C6, and the second terminal of the eighteenth switch M18 is connected to the ground terminal GND.

[0092] based on Figure 6 The structure shown illustrates that the specific operation of the charging management circuit may include:

[0093] For positive half-cycle AC signals: the controller switches the first circuit between the first, second, and third states by controlling various switches. Furthermore, the controller controls the switches of each bridge arm, causing the two bridge arms to operate sequentially in the first, second, and third modes, thus switching between the first and second modes. The first mode includes the first and second states; the second mode includes the first, second, and third states.

[0094] In the first state (mode 1) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fourth switch M4, the fifth switch M5, the seventh switch M7, and the ninth switch M9 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 7 In Mode 1, resistor R0 represents the battery. First capacitor C1, second capacitor C2, third capacitor C3, and resistor R0 (representing the battery) are all disconnected from the power receiver (represented by AC). First capacitor C1 discharges into resistor R0, and second capacitor C2 is connected in parallel with resistor R0. Therefore, Vb = Vc². It is worth noting that when Mode 1 first appears in the first circuit, first capacitor C1 has no stored energy, so Vb is approximately 0V. However, as the circuit cycles through different modes, when Mode 1 appears later, first capacitor C1 has stored energy, so it can charge resistor R0, at which point Vb = Vc².

[0095] In the second state (mode 2) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fifth switch M5, the seventh switch M7, the eighth switch M8, and the tenth switch M10 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 7 In mode 2 as shown, the second capacitor C2, the third capacitor C3, the resistor R0, and the power receiver (denoted by AC) are connected in parallel, so V AC =Vc2=Vc3=Vb (i.e., relation 1).

[0096] In the first state (mode 3) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fourth switch M4, the fifth switch M5, the seventh switch M7, and the ninth switch M9 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 7In mode 3, the second capacitor C2 and resistor R0 are connected in parallel and then in series with the third capacitor C3 to form a whole. This whole is then connected in parallel with the first capacitor C1 and the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1, Vc1 = Vc3 + Vb (i.e., relation 2), Vc2 = Vb (i.e., relation 3), combining the above relations 1 to 3, we can obtain V AC =2Vb.

[0097] In the second state (mode 4) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fifth switch M5, the seventh switch M7, the eighth switch M8, and the tenth switch M10 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 7 In mode 4, 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. This whole is then connected in parallel with the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1 + Vc2, combining relations 1 to 3, we can obtain V AC =3Vb.

[0098] In the third state (mode 5) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the sixth switch M6, the eighth switch M8, and the tenth switch M10 are all on, and all other switches in the first circuit are off. At this time, combined with... Figure 7 In mode 5 shown, the third capacitor C3 and resistor R0 are connected in parallel, then connected in series with the first capacitor C1 and the second capacitor C2 to form a whole. This whole is then connected in parallel with the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1 + Vc2 + Vb, combining relations 1 to 4, we can derive V AC =4Vb.

[0099] In modes 1 to 5, since the power receiver, represented by AC, receives a positive half-cycle signal during this period, by grounding the negative terminal of the power receiver, under the action of the two bridge arms, the first switch M1, and the second switch M2, the signal transmitted to each capacitor and the resistor R0 used to represent the battery can be a positive half-cycle signal, thereby charging the battery based on the positive half-cycle signal.

[0100] Therefore, in mode 1, the charging voltage Vb supplied to the battery is approximately the voltage of the second capacitor C2; in mode 2, the charging voltage Vb supplied to the battery is approximately the positive half-cycle signal of the AC signal; in mode 3, the charging voltage Vb supplied to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; in mode 4, the charging voltage Vb supplied to the battery is approximately 1 / 3 of the positive half-cycle signal of the AC signal; and in mode 5, the charging voltage Vb supplied to the battery is approximately 1 / 4 of the positive half-cycle signal of the AC signal.

[0101] Combination Figure 7 As shown, in response to a positive half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the first circuit operates sequentially in modes 1, 2, 3, 4, 5, 4, 3, 2, and 1. Specifically, during the process of the signal increasing from 0 to its maximum value in the positive half-cycle signal, the entire system operates sequentially in modes 1, 2, 3, 4, and 5; conversely, during the process of the signal decreasing from its maximum value to 0, the entire system operates sequentially in modes 5, 4, 3, 2, and 1. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0102] For the negative half-cycle of the AC signal: the controller switches the second circuit between the fourth, fifth, and sixth states by controlling various switches. Furthermore, the controller controls the switches of each bridge arm, causing the two bridge arms to operate sequentially in the first mode, the third mode, and the first mode, thus switching between the first and third modes. The first mode includes the fourth and fifth states, and the third mode includes the fourth, fifth, and sixth states.

[0103] In the fourth state (mode 6) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off. The first switch M1, the second switch M2, the twelfth switch M12, the thirteenth switch M13, the fifteenth switch M15, and the seventeenth switch M17 are all on, and all other switches in the second circuit are off. At this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 7 The connection relationship is shown in mode 6.

[0104] In the fifth state (mode 7) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off. The first switch M1, the eleventh switch M11, the thirteenth switch M13, the fifteenth switch M15, the sixteenth switch M16, and the eighteenth switch M18 are all on, while all other switches in the second circuit are off. At this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 7 The connection relationship is shown in mode 7.

[0105] In the fourth state (mode 8) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off. The first switch M1, the second switch M2, the twelfth switch M12, the thirteenth switch M13, the fifteenth switch M15, and the seventeenth switch M17 are all on, while the other switches in the second circuit are off. At this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 7 The connection relationship is shown in mode 8.

[0106] In the fifth state (mode 9) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off. The first switch M1, the eleventh switch M11, the thirteenth switch M13, the fifteenth switch M15, the sixteenth switch M16, and the eighteenth switch M18 are all on, while the other switches in the second circuit are off. At this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 7 The connection relationship is shown in mode 9.

[0107] In the sixth state (mode 10) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off. The first switch M1, the eleventh switch M11, the fourteenth switch M14, the sixteenth switch M16, and the eighteenth switch M18 are all on, while the other switches in the second circuit are off. At this time, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 7 The connection relationship shown in mode 10.

[0108] In modes 6 to 10, since the power receiver (represented by AC) receives a negative half-cycle signal during this period, by grounding the positive terminal of the power receiver, and with the action of the two bridge arms, the first switch M1, and the second switch M2, the negative half-cycle signal can be converted into a corresponding positive signal. This results in positive signals being transmitted to the capacitors and the resistor R0 representing the battery, thus enabling battery charging based on the positive signal. Furthermore, combined with the processes described in modes 1 to 5, the coordinated operation of the two bridge arms, the first switch M1, and the second switch M2 can convert the AC signal received by the power receiver into a DC signal before transmitting it to the processing unit, thereby achieving AC-to-DC conversion.

[0109] Similarly, for the second circuit, based on the fact that the working process is similar to that of the first circuit, in mode 6, the charging voltage Vb supplied to the battery is approximately the voltage of the fifth capacitor C5; in mode 7, the charging voltage Vb supplied 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 supplied 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 supplied to the battery is approximately 1 / 3 of the positive signal corresponding to the negative half-cycle signal in the AC signal; and in mode 10, the charging voltage Vb supplied to the battery is approximately 1 / 4 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0110] Based on this, combined Figure 7 As shown, in response to the positive signal corresponding to the negative half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the second circuit operates sequentially in modes 6, 7, 8, 9, 10, 9, 8, 7, and 6. Specifically, during the process of increasing the signal value from 0 to its maximum value in the positive signal, the entire system operates sequentially in modes 6, 7, 8, 9, and 10; conversely, during the process of decreasing the signal value from its maximum value to 0, the entire system operates sequentially in modes 10, 9, 8, 7, and 6. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0111] It should be understood that the structure of the charging management circuit in this embodiment is the same as that in the aforementioned embodiments. Figure 4 The similarities in the charging management circuit structure shown can be found in the relevant descriptions in the foregoing embodiments; repeated details will not be repeated here.

[0112] Figure 8An exemplary schematic diagram of a charging management circuit provided in an embodiment of this application is shown below. Figure 8 As shown, the charging management circuit in this embodiment is similar to that in the previous embodiments. Figure 6 The charging management circuits shown are basically similar in structure, except that the structures of the first and second circuits are different. For example, refer to... Figure 8 As shown, the first circuit includes: a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, a seventh switch M7, a first capacitor C1, and a second capacitor C2; the control terminal of the third switch M3 is connected to the controller, and the first terminal of the third switch M3 is connected to the second terminal of the fifth switch M5, the first terminal of the sixth switch M6, and the battery (…). Figure 8 (Not shown in the diagram) The connections are as follows: the second terminal of the third switch M3 is connected to the first terminal of the first switch M1, the second terminal of the first capacitor C1, and the first terminal of the second bridge arm switch Q2; the control terminal of the fourth switch M4 is connected to the controller, and the first terminal of the fourth switch M4 is connected to the second terminal of the first bridge arm switch Q1 and the first terminal of the first capacitor C1; the second terminal of the fourth switch M4 is connected to the first terminal of the second capacitor C2 and the first terminal of the fifth switch M5; the control terminal of the fifth switch M5 is connected to the controller, and the first terminal of the fifth switch M5 is also connected to the first terminal of the second capacitor C2 and the second terminal of the fifth switch M5 is also connected to the battery; the control terminal of the sixth switch M6 is connected to the controller, and the first terminal of the sixth switch M6 is also connected to the battery; the second terminal of the sixth switch M6 is connected to the second terminal of the second capacitor C2 and the first terminal of the seventh switch M7; the control terminal of the seventh switch M7 is connected to the controller, and the first terminal of the seventh switch M7 is also connected to the second terminal of the second capacitor C2 and the second terminal of the seventh switch M7 is connected to the ground terminal GND.

[0113] The second circuit includes: 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; the control terminal of the eighth switch M8 is connected to the controller, and the first terminal of the eighth switch M8 is connected to the second terminal of the tenth switch M10, the first terminal of the eleventh switch M11, and the battery; the second terminal of the eighth switch M8 is connected to the first terminal of the second switch M2, the second terminal of the third capacitor C3, and the first terminal of the fourth bridge arm switch Q4; the control terminal of the ninth switch M9 is connected to the controller, and the first terminal of the ninth switch M9 is connected to the second terminal of the third bridge arm switch Q3 and the first terminal of the third capacitor C3; the second terminal of the ninth switch M9... The first terminal of the fourth capacitor C4 and the first terminal of the tenth switch M10 are connected respectively. The control terminal of the tenth switch M10 is connected to the controller, and the first terminal of the tenth switch M10 is also connected to the first terminal of the fourth capacitor C4. The second terminal of the tenth switch M10 is also connected to the battery. The control terminal of the eleventh switch M11 is connected to the controller, and the first terminal of the eleventh switch M11 is also connected to the battery. The second terminal of the eleventh switch M11 is connected to the second terminal of the fourth capacitor C4 and the first terminal of the twelfth switch M12. The control terminal of the twelfth switch M12 is connected to the controller, and the first terminal of the twelfth switch M12 is also connected to the second terminal of the fourth capacitor C4. The second terminal of the twelfth switch M12 is connected to the ground terminal GND.

[0114] based on Figure 8 The structure shown illustrates that the specific operation of the charging management circuit may include:

[0115] For positive half-cycle AC signals: the controller switches the first circuit between the first, second, and third states by controlling various switches. Furthermore, the controller controls the switches of each bridge arm, causing the two bridge arms to operate sequentially in the first, second, and third modes, thus switching between the first and second modes. The first mode includes the first and second states; the second mode includes the second and third states.

[0116] In the first state (mode 1) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fifth switch M5, and the seventh switch M7 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 9In Mode 1, resistor R0 represents the battery. The first capacitor C1, the second capacitor C2, and resistor R0 (representing the battery) are all disconnected from the power receiver (represented by AC). The first capacitor C1 discharges into resistor R0, and the second capacitor C2 is connected in parallel with resistor R0. Therefore, Vb = Vc². It is worth noting that when Mode 1 first appears in the first circuit, Vb is approximately 0V because the first capacitor C1 has no stored energy. However, as the circuit cycles through different modes, when Mode 1 appears later, the first capacitor C1 has stored energy, allowing it to charge resistor R0. In this case, Vb = Vc².

[0117] In the second state (mode 2) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fifth switch M5, and the seventh switch M7 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 9 In mode 2 as shown, the second capacitor C2, resistor R0, and power receiver (denoted by AC) are connected in parallel, so V AC =Vc2=Vb (i.e., relation 1).

[0118] In the third state (mode 3) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fourth switch M4, and the sixth switch M6 are all on, and all other switches in the first circuit are off. At this time, combined with... Figure 9 In mode 3, the second capacitor C2 and resistor R0 are connected in series, and then in parallel with the first capacitor C1 and the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1, Vc1 = Vc2 + Vb (i.e., relation 2), combining relation 1 and relation 2 above, we can derive V AC =2Vb.

[0119] In the second state (mode 4) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fifth switch M5, and the seventh switch M7 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 9 In mode 4, the second capacitor C2 and resistor R0 are connected in parallel and then in series with the first capacitor C1 to form a whole. This whole is then connected in parallel with the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1 + Vc2, combining relation 1 and relation 2, we can obtain V AC =3Vb.

[0120] In modes 1 to 4, since the power receiver, represented by AC, receives a positive half-cycle signal during this period, by grounding the negative terminal of the power receiver, under the action of the two bridge arms, the first switch M1, and the second switch M2, the signal transmitted to each capacitor and the resistor R0 used to represent the battery can be a positive half-cycle signal, thereby charging the battery based on the positive half-cycle signal.

[0121] Therefore, in mode 1, the charging voltage Vb supplied to the battery is approximately the voltage of the second capacitor C2; in mode 2, the charging voltage Vb supplied to the battery is approximately the positive half-cycle signal of the AC signal; in mode 3, the charging voltage Vb supplied to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; and in mode 4, the charging voltage Vb supplied to the battery is approximately 1 / 3 of the positive half-cycle signal of the AC signal.

[0122] Combination Figure 9 As shown, in response to a positive half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the first circuit operates sequentially in modes 1, 2, 3, 4, 3, 2, and 1. Specifically, during the process of the signal increasing from 0 to its maximum value in the positive half-cycle signal, the entire system operates sequentially in modes 1, 2, 3, and 4; conversely, during the process of the signal decreasing from its maximum value to 0, the entire system operates sequentially in modes 4, 3, 2, and 1. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0123] For the negative half-cycle of the AC signal: the controller controls various switches to switch the second circuit between the fourth, fifth, and sixth states. Furthermore, the controller controls various bridge arm switches to make the two bridge arms operate sequentially in the first mode, the third mode, and the first mode, thus switching between the first and third modes. The first mode includes the fourth and fifth states, and the third mode includes the fifth and sixth states.

[0124] In the fourth state (mode 5) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the tenth switch M10, and the twelfth switch M12 are on, and all other switches in the second circuit are off. At this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 9 The connection relationship is shown in mode 5.

[0125] In the fifth state (mode 6) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the eighth switch M8, the tenth switch M10, and the twelfth switch M12 are on, and all other switches in the second circuit are off; at this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 9 The connection relationship is shown in mode 6.

[0126] In the sixth state (mode 7) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off; the first switch M1, the second switch M2, the ninth switch M9, and the eleventh switch M11 are all on, and all other switches in the second circuit are off; at this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 9 The connection relationship is shown in mode 7.

[0127] In the fifth state (mode 8) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off; the first switch M1, the eighth switch M8, the tenth switch M10, and the twelfth switch M12 are on, and all other switches in the second circuit are off; at this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 9 The connection relationship is shown in mode 8.

[0128] In modes 5 to 8, since the power receiver (represented by AC) receives a negative half-cycle signal during this period, by grounding the positive terminal of the power receiver, and with the action of the two bridge arms, the first switch M1, and the second switch M2, the negative half-cycle signal can be converted into a corresponding positive signal. This results in positive signals being transmitted to the capacitors and the resistor R0 representing the battery, thus enabling battery charging based on the positive signal. Furthermore, combined with the processes described in modes 1 to 4, the coordinated operation of the two bridge arms, the first switch M1, and the second switch M2 can convert the AC signal received by the power receiver into a DC signal before transmitting it to the processing unit, thereby achieving AC-to-DC conversion.

[0129] Similarly, for the second circuit, based on the fact that the working process is similar to that of the first circuit, in mode 5, the charging voltage Vb supplied to the battery is approximately the voltage of the fourth capacitor C4; in mode 6, the charging voltage Vb supplied 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 supplied to the battery is approximately 1 / 2 of the positive signal corresponding to the negative half-cycle signal in the AC signal; and in mode 8, the charging voltage Vb supplied to the battery is approximately 1 / 3 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0130] Based on this, combined Figure 9 As shown, in response to the positive signal corresponding to the negative half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the second circuit operates sequentially in modes 5, 6, 7, 8, 7, 6, and 5. Specifically, during the process of increasing the signal value from 0 to its maximum value in the positive signal, the entire system consists of the two bridge arms, the first switch M1, the second switch M2, and the second circuit operating sequentially in modes 5, 6, 7, and 8; conversely, during the process of decreasing the signal value from its maximum value to 0, the entire system consists of the two bridge arms, the first switch M1, the second switch M2, and the second circuit operating sequentially in modes 8, 7, 6, and 5. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0131] In summary, there are four modes in the positive half-cycle signal and four modes in the negative half-cycle signal. This allows the charging curve formed by the charging voltage supplied to the battery to approximate the sine wave curve of the AC signal, thereby further improving charging efficiency.

[0132] It should be understood that the structure of the charging management circuit in this embodiment is the same as that in the aforementioned embodiments. Figure 6 The similarities in the charging management circuit structure shown can be found in the relevant descriptions in the foregoing embodiments; repeated details will not be repeated here.

[0133] Figure 10 An exemplary schematic diagram of a charging management circuit provided in an embodiment of this application is shown below. Figure 10 As shown, the charging management circuit in this embodiment is similar to that in the previous embodiments. Figure 6 The charging management circuits shown are basically similar in structure, except that the structures of the first and second circuits are different. For example, refer to... Figure 10As shown, the first circuit includes: a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, a seventh switch M7, a first capacitor C1, and a 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 connected to the first terminal of the fifth switch M5 and the first terminal of the second capacitor C2, and the second terminal of the third switch M3 is connected to the first terminal of the first switch M1, the second terminal of the first capacitor C1, and the first terminal of the second bridge arm switch Q2; the control terminal of the fourth switch M4 is connected to the controller, the first terminal of the fourth switch M4 is connected to the second terminal of the first bridge arm switch Q1 and the first terminal of the first capacitor C1, and the second terminal of the fourth switch M4 is connected to the battery ( Figure 10 (Not shown in the diagram) The second circuit, the second terminal of the fifth switch M5, and the first terminal of the sixth switch M6 are connected; the control terminal of the fifth switch M5 is connected to the controller, the first terminal of the fifth switch M5 is also connected to the first terminal of the second capacitor C2, and the second terminal of the fifth switch M5 is also 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 also connected to the battery, the second terminal of the sixth switch M6 is connected to the second terminal of the second capacitor C2 and the first terminal of the seventh switch M7 respectively; 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 second terminal of the second capacitor C2, and the second terminal of the seventh switch M7 is connected to the ground terminal GND.

[0134] The second circuit includes: 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. 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 first terminal of the tenth switch M10 and the first terminal of the fourth capacitor C4. The second terminal of the eighth switch M8 is connected to the first terminal of the second switch M2, the second terminal of the third capacitor C3, and the first terminal of the fourth bridge arm switch Q4. 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 second terminal of the third bridge arm switch Q3 and the first terminal of the third capacitor C3. The second terminal of the ninth switch M9 is connected to the battery, the second terminal of the tenth switch M10, and the eleventh switch M12. The first terminal of switch M11, the second terminal of the fourth switch M4, the second terminal of the fifth switch M5, and the first terminal of the sixth switch M6 are connected; the control terminal of the tenth switch M10 is connected to the controller, the first terminal of the tenth switch M10 is also connected to the first terminal of the fourth capacitor C4, and the second terminal of the tenth switch M10 is also connected to the battery; 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 battery, and the second terminal of the eleventh switch M11 is connected to the second terminal of the fourth capacitor C4 and the first terminal of the twelfth switch M12; the control terminal of the twelfth switch M12 is connected to the controller, the first terminal of the twelfth switch M12 is also connected to the second terminal of the fourth capacitor C4, and the second terminal of the twelfth switch M12 is connected to the ground terminal GND.

[0135] based on Figure 10 The structure shown illustrates that the specific operation of the charging management circuit may include:

[0136] For positive half-cycle AC signals: the controller switches the first circuit between the first, second, and third states by controlling various switches. Furthermore, the controller controls the switches of each bridge arm, causing the two bridge arms to operate sequentially in the first, second, and third modes, thus switching between the first and second modes. The first mode includes the first state; the second mode includes the first, second, and third states.

[0137] In the first state (mode 1) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fourth switch M4, the fifth switch M5, and the seventh switch M7 are all on, and all other switches in the first circuit are off. At this time, combined with... Figure 11In Mode 1, resistor R0 represents the battery. The first capacitor C1, the second capacitor C2, and resistor R0 (representing the battery) are all disconnected from the power receiver (represented by AC). The first capacitor C1 discharges into resistor R0, and the second capacitor C2 is connected in parallel with resistor R0. Therefore, Vb = Vc². It is worth noting that when Mode 1 first appears in the first circuit, Vb is approximately 0V because the first capacitor C1 has no stored energy. However, as the circuit cycles through different modes, when Mode 1 appears later, the first capacitor C1 has stored energy, allowing it to charge resistor R0. In this case, Vb = Vc².

[0138] In the first state (mode 2) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the fourth switch M4, the fifth switch M5, and the seventh switch M7 are all on, and all other switches in the first circuit are off. At this time, combined with... Figure 11 In mode 2 as shown, the first capacitor C1, the second capacitor C2, the resistor R0, and the power receiver (denoted by AC) are connected in parallel, so V AC =Vc2=Vc1=Vb (i.e., relation 1).

[0139] In the second state (mode 3) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, the fifth switch M5, and the seventh switch M7 are on, and all other switches in the first circuit are off. At this time, combined with... Figure 11 In mode 3 as shown, the second capacitor C2 and resistor R0 are connected in parallel and then in series with the first capacitor C1 to form a whole. This whole is then connected in parallel with the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1 + Vc2, Vc2 = Vb (i.e., relation 2), combining relation 1 and relation 2 above, we can derive V AC =2Vb.

[0140] In the third state (mode 4) of the second mode, both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are on, while both the second bridge arm switch Q2 and the third bridge arm switch Q3 are off; the second switch M2, the third switch M3, and the sixth switch M6 are all on, and all other switches in the first circuit are off. At this time, combined with... Figure 11 In mode 4, the first capacitor C1, the second capacitor C2, and the resistor R0 are connected in series to form a whole. This whole is then connected in parallel with the power receiver represented by AC. Therefore, V can be obtained. AC =Vc1 + Vc2 + Vb, combining relation 1 and relation 2, we can obtain V AC =3Vb.

[0141] In modes 1 to 4, since the power receiver, represented by AC, receives a positive half-cycle signal during this period, by grounding the negative terminal of the power receiver, under the action of the two bridge arms, the first switch M1, and the second switch M2, the signal transmitted to each capacitor and the resistor R0 used to represent the battery can be a positive half-cycle signal, thereby charging the battery based on the positive half-cycle signal.

[0142] Therefore, in mode 1, the charging voltage Vb supplied to the battery is approximately the voltage of the second capacitor C2; in mode 2, the charging voltage Vb supplied to the battery is approximately the positive half-cycle signal of the AC signal; in mode 3, the charging voltage Vb supplied to the battery is approximately 1 / 2 of the positive half-cycle signal of the AC signal; and in mode 4, the charging voltage Vb supplied to the battery is approximately 1 / 3 of the positive half-cycle signal of the AC signal.

[0143] Combination Figure 11 As shown, in response to a positive half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the first circuit operates sequentially in modes 1, 2, 3, 4, 3, 2, and 1. Specifically, during the process of the signal increasing from 0 to its maximum value in the positive half-cycle signal, the entire system operates sequentially in modes 1, 2, 3, and 4; conversely, during the process of the signal decreasing from its maximum value to 0, the entire system operates sequentially in modes 4, 3, 2, and 1. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0144] For the negative half-cycle of the AC signal: the controller switches the second circuit between the fourth, fifth, and sixth states by controlling various switches. Furthermore, the controller controls the switches of each bridge arm, causing the two bridge arms to operate sequentially in the first mode, the third mode, and the first mode, thus switching between the first and third modes. The first mode includes the fourth state, and the third mode includes the fourth, fifth, and sixth states.

[0145] In the fourth state (mode 5) of the first mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off. The first switch M1, the second switch M2, the ninth switch M9, the tenth switch M10, and the twelfth switch M12 are all on, and all other switches in the second circuit are off. At this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 11The connection relationship is shown in mode 5.

[0146] In the fourth state (mode 6) of the third mode, both the second bridge arm switch Q2 and the fourth bridge arm switch Q4 are on, while both the first bridge arm switch Q1 and the third bridge arm switch Q3 are off; the first switch M1, the second switch M2, the ninth switch M9, the tenth switch M10, and the twelfth switch M12 are all on, while the other switches in the second circuit are off; at this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 11 The connection relationship is shown in mode 6.

[0147] In the fifth state (mode 7) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off; the first switch M1, the eighth switch M8, the tenth switch M10, and the twelfth switch M12 are on, and all other switches in the second circuit are off; at this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 11 The connection relationship is shown in mode 7.

[0148] In the sixth state (mode 8) of the third mode, both the second bridge arm switch Q2 and the third bridge arm switch Q3 are on, while both the first bridge arm switch Q1 and the fourth bridge arm switch Q4 are off; the first switch M1, the eighth switch M8, and the eleventh switch M11 are on, and all other switches in the second circuit are off; at this time, the third capacitor C3, the fourth capacitor C4, the resistor R0 representing the battery, and the power receiver represented by AC exhibit... Figure 11 The connection relationship is shown in mode 8.

[0149] In modes 5 to 8, since the power receiver (represented by AC) receives a negative half-cycle signal during this period, by grounding the positive terminal of the power receiver, and with the action of the two bridge arms, the first switch M1, and the second switch M2, the negative half-cycle signal can be converted into a corresponding positive signal. This results in positive signals being transmitted to the capacitors and the resistor R0 representing the battery, thus enabling battery charging based on the positive signal. Furthermore, combined with the processes described in modes 1 to 4, the coordinated operation of the two bridge arms, the first switch M1, and the second switch M2 can convert the AC signal received by the power receiver into a DC signal before transmitting it to the processing unit, thereby achieving AC-to-DC conversion.

[0150] Similarly, for the second circuit, based on the fact that the working process is similar to that of the first circuit, in mode 5, the charging voltage Vb supplied to the battery is approximately the voltage of the fourth capacitor C4; in mode 6, the charging voltage Vb supplied 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 supplied to the battery is approximately 1 / 2 of the positive signal corresponding to the negative half-cycle signal in the AC signal; and in mode 8, the charging voltage Vb supplied to the battery is approximately 1 / 3 of the positive signal corresponding to the negative half-cycle signal in the AC signal.

[0151] Based on this, combined Figure 11 As shown, in response to the positive signal corresponding to the negative half-cycle signal, the entire system consisting of the two bridge arms, the first switch M1, the second switch M2, and the second circuit operates sequentially in modes 5, 6, 7, 8, 7, 6, and 5. Specifically, during the process of increasing the signal value from 0 to its maximum value in the positive signal, the entire system consists of the two bridge arms, the first switch M1, the second switch M2, and the second circuit operating sequentially in modes 5, 6, 7, and 8; conversely, during the process of decreasing the signal value from its maximum value to 0, the entire system consists of the two bridge arms, the first switch M1, the second switch M2, and the second circuit operating sequentially in modes 8, 7, 6, and 5. Furthermore, the switching timing between modes can be designed according to actual needs and is not specifically limited here.

[0152] It should be understood that the structure of the charging management circuit in this embodiment is the same as that in the aforementioned embodiments. Figure 6 The similarities in the charging management circuit structure shown can be found in the relevant descriptions in the foregoing embodiments; repeated details will not be repeated here.

[0153] Figure 12 An exemplary schematic diagram of a charging management circuit provided in an embodiment of this application is shown below. Figure 12 As shown, the charging management circuit in this embodiment is similar to that in the previous embodiments. Figure 3 The charging management circuits shown are basically similar in structure, except that the DC-DC converter also includes a first switching unit and a second switching unit. For example, refer to... Figure 12 As shown, the DC-DC converter may also include a first switching unit and a second switching unit. The DC-DC converter also includes a wired power input terminal P0. The first switching unit is connected to the third transmission terminal P3 of the processing unit, the wired power input terminal P0, and the controller, respectively. The second switching unit is connected to the fourth transmission terminal P4 of the processing unit, the wired power input terminal P0, and the controller, respectively. Figure 12 The controller is not shown in the diagram, so Figure 12The connection relationship between each switching unit and the controller is not shown. The wired power input terminal P0, the first transmission terminal P1, the second transmission terminal P2, the third transmission terminal P3, and the fourth transmission terminal P4 are all different. In this case, the controller is also used to: in response to meeting the wireless charging conditions, control the first switching unit to disconnect the wired power input terminal P0 from the third transmission terminal P3 of the processing unit, and control the second switching unit to disconnect the wired power input terminal P0 from the fourth transmission terminal P4 of the processing unit.

[0154] In other words, the third transmission terminal P3 can be considered as a node between the first switching unit and the processing unit, and the fourth transmission terminal P4 can be considered as a node between the second switching unit and the processing unit. Therefore, the third transmission terminal P3 and the fourth transmission terminal P4 can be regarded as two intermediate taps of the DC-DC converter. The first bridge arm and the second bridge arm are respectively connected to different intermediate taps of the DC-DC converter, thereby enabling the two bridge arms and the DC-DC converter to work together, reducing the losses generated during charging and improving charging efficiency. Furthermore, the first switching unit and the second switching unit can control whether the power input from the wired power input terminal P0 is transmitted to the processing unit. Thus, when charging the battery wirelessly, both the first switching unit and the second switching unit can be controlled to be disconnected to avoid interference from the power input from the wired power input terminal P0 during wireless charging, thereby improving the reliability and safety of wireless charging.

[0155] It is worth noting that when charging the battery wirelessly, the first and second switching units are in a normally off mode. Therefore, the first and second switching units do not need to be turned on when charging wirelessly, unlike in the prior art where the first and second switching units still need to be turned on when charging wirelessly. Therefore, the embodiments of this application can further reduce the number of devices that need to be turned on when charging the battery wirelessly, thereby further reducing the losses generated during charging and further improving the charging efficiency.

[0156] The wireless charging conditions that need to be met may include any of the following: detecting that the distance between the device including the charging management circuit and the wireless charging device is less than a preset distance; receiving an input wireless charging command. It should be understood that the preset distance can be the maximum distance at which the charging management circuit and the wireless charging device can form an LC resonator; the wireless charging command can be a command generated when the user confirms wireless charging.

[0157] For example, the first switching unit may include a first control switch T1, the control electrode of which is connected to the controller, the first electrode of which is connected to the wired power input terminal P0, and the second electrode of which is connected to the first bridge arm and the third transmission terminal P3 of the processing unit, respectively. The second switching unit may include a second control switch T2, the control electrode of which is connected to the controller, the first electrode of which is connected to the wired power input terminal P0, and the second electrode of which is connected to the second bridge arm and the fourth transmission terminal P4 of the processing unit, respectively. In this way, the controller can control whether the first and second electrodes of the first control switch T1 are connected, thereby controlling whether the wired power input terminal P0 is connected to the third transmission terminal P3 of the processing unit. Similarly, the controller can control whether the first and second electrodes of the second control switch T2 are connected, thereby controlling whether the wired power input terminal P0 is connected to the fourth transmission terminal P4 of the processing unit, thereby realizing the controller's control over the first and second switching units. It should be understood that the control switch can be, but is not limited to, switching devices with a control terminal such as field-effect transistors (FETs) and bipolar transistors (BJTs). The specific design can be tailored to actual needs and is not specifically limited here. Taking a field-effect transistor as an example, the control terminal serves as the gate, the first terminal as the source, and the second terminal as the drain.

[0158] Continue to refer to Figure 12 As shown, the charging management circuit may further include an overvoltage protector, which is connected to both the wired power input terminal P0 and the charging interface. The overvoltage protector is used to: disconnect the connection between the wired power input terminal P0 and the charging interface in response to a DC signal transmitted through the charging interface exceeding a preset value; and connect the wired power input terminal P0 and the charging interface in response to a DC signal transmitted through the charging interface not exceeding the preset value. At this time, the controller is also used to: control the first switching unit to connect the wired power input terminal P0 to the third transmission terminal P3 of the processing unit in response to meeting the wired charging conditions, so that the processing unit charges the battery according to the DC signal; or control the second switching unit to connect the wired power input terminal P0 to the fourth transmission terminal P4 of the processing unit in response to meeting the wired charging conditions, so that the processing unit charges the battery according to the DC signal. The wired charging conditions may include any of the following: detecting that the charging interface is connected to a wired charger, or receiving an input wired charging command; it should be understood that the wired charging command may be a command generated when the user confirms wireless charging.

[0159] In other words, the charging management circuit can process energy not only during wireless charging to enable wireless charging of the battery, but also during wired charging to enable wired charging of the battery. This expands the functionality of the charging management circuit, allowing it to charge the battery via wired charging even when wireless charging malfunctions, thus improving charging reliability. Furthermore, by using two bridge arms and a DC-DC converter, it can process energy during both wireless and wired charging, achieving a fusion of wireless and wired charging, simplifying the circuit structure, and reducing manufacturing costs.

[0160] It should be understood that the structure of the charging management circuit in this embodiment is the same as that in the aforementioned embodiments. Figure 3 The similarities in the charging management circuit structure shown can be found in the relevant descriptions in the foregoing embodiments; repeated details will not be repeated here.

[0161] It should also be understood that when the charging management circuit does not need to integrate wireless charging and wired charging, the DC-DC converter may not include the first and second switching units, as in the aforementioned embodiments. Figure 3 As shown, this simplifies the structure of the charging management circuit and further reduces the area occupied by the charging management circuit.

[0162] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A charging management circuit, characterized in that, include: The system includes a power receiver, a first bridge arm, a second bridge arm, a DC-DC converter, and a controller; the DC-DC converter includes a first switch, a second switch, and a processing unit. The power receiver is connected to the midpoint of the first bridge arm and also to the midpoint of the second bridge arm. The power receiver is used to: output an AC signal to the midpoint of the first bridge arm and the second bridge arm in response to wireless power transmission. The first pole of the first switch is connected to the first transmission terminal of the processing unit, the second pole of the first switch is connected to the ground terminal, and the control pole of the first switch is connected to the controller. The first pole of the second switch is connected to the second transmission terminal of the processing unit, the second pole of the second switch is connected to the ground terminal, and the control pole of the second switch is connected to the controller. The first bridge arm is also connected to the first transmission terminal, the third transmission terminal of the processing unit, and the controller, respectively. The second bridge arm is also connected to the second transmission terminal, the fourth transmission terminal of the processing unit, and the controller, respectively. The first transmission terminal, the second transmission terminal, the third transmission terminal, and the fourth transmission terminal are all different. The controller is configured to: respond to a positive half-cycle signal of the AC signal, control the first bridge arm, the second bridge arm, the first switch, and the second switch to output the positive half-cycle signal to the processing unit; and respond to a negative half-cycle signal of the AC signal, control the first bridge arm, the second bridge arm, the first switch, and the second switch to convert the negative half-cycle signal into a positive signal and output it to the processing unit. The output terminal of the processing unit is used to connect to the battery, and the processing unit is used to: charge the battery in response to the positive half-cycle signal; and charge the battery in response to the positive signal.

2. The charging management circuit as described in claim 1, characterized in that, The DC-DC converter further includes a first switching unit and a second switching unit, and also includes a wired power input terminal. The first switching unit is connected to the third transmission terminal, the wired power input terminal, and the controller, respectively. The second switching unit is connected to the fourth transmission terminal, the wired power input terminal, and the controller, respectively. The wired power input terminal, the first transmission terminal, the second transmission terminal, the third transmission terminal, and the fourth transmission terminal are all different. The controller is further configured to: in response to meeting the wireless charging conditions, control the first switching unit to disconnect the wired power input terminal from the third transmission terminal, and control the second switching unit to disconnect the wired power input terminal from the fourth transmission terminal.

3. The charging management circuit as described in 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 electrode of the first bridge arm switch is connected to the controller. The first electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 electrode of the third bridge arm switch is connected to the controller. The first electrode of the third bridge arm switch is 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 fourth transmission terminal. 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 second transmission 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: 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 half-cycle signal; and control the first bridge arm and the second bridge arm to switch between a first mode and a third mode in response to the positive signal. 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.

4. The charging management circuit as described in claim 3, characterized in that, The processing unit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor; The control electrode of the third switch is connected to the controller, the first electrode of the third switch is connected to the second electrode of the fourth switch, the first electrode of the fifth switch, and the first electrode of the second capacitor, respectively, and the second electrode of the third switch is connected to the first electrode of the first switch and the second electrode of the first capacitor, respectively. The control electrode of the fourth switch is connected to the controller, the first electrode of the fourth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor, and the second electrode of the fourth switch is also connected to the first electrode of the second capacitor. The control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is also connected to the first terminal of the second capacitor, and the second terminal of the fifth switch is connected to the battery, the first terminal of the sixth switch, the second terminal of the ninth switch, and the first terminal of the tenth switch, respectively. The control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is also connected to the battery, and the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch, respectively. The control electrode of the seventh switch is connected to the controller, the first electrode of the seventh switch is also connected to the second electrode of the second capacitor, and the second electrode of the seventh switch is connected to the ground terminal; The control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is connected to the first terminal of the first capacitor and the second terminal of the first bridge arm switch, and the second terminal of the eighth switch is connected to the first terminal of the fourth capacitor, the first terminal of the ninth switch and the first terminal of the twelfth switch. The control electrode of the ninth switch is connected to the controller, the first electrode of the ninth switch is also connected to the first electrode of the fourth capacitor, and the second electrode of the ninth switch is also connected to the battery. The control electrode of the tenth switch is connected to the controller, the first electrode of the tenth switch is also connected to the battery, and the second electrode of the tenth switch is connected to the second electrode of the fourth capacitor and the first electrode of the eleventh switch respectively. The control electrode of the eleventh switch is connected to the controller, the first electrode of the eleventh switch is also connected to the second electrode of the fourth capacitor, and the second electrode of the eleventh switch is connected to the ground terminal. The control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is also connected to the first terminal of the fourth capacitor, and the second terminal of the twelfth switch is connected to the second terminal of the third capacitor and the first terminal of the second switch, respectively.

5. The charging management circuit as described in claim 4, characterized in that, The controller is further configured to: control the first switch, the second switch, and the 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; and control the first switch, the second switch, and the processing unit to switch between a first state, a fifth state, a sixth state, and a seventh state in response to the positive signal. The first state includes a state in which the first switch, the second switch, the fourth switch, the sixth switch, the eighth switch, and the tenth switch are all turned on. The second state includes a state in which the second switch, the third switch, the fifth switch, the seventh switch, the ninth switch, and the eleventh switch are all turned on; The third state includes a state in which the first switch, the second switch, the fifth switch, the seventh switch, the eighth switch, and the tenth switch are all turned on. The fourth state includes a state in which the second switch, the third switch, the fourth switch, the sixth switch, the ninth switch, and the eleventh switch are all turned on. The fifth state includes a state in which the first switch, the fifth switch, the seventh switch, the ninth switch, the eleventh switch, and the twelfth switch are all turned on; The sixth state includes a state in which the first switch, the second switch, the fourth switch, the sixth switch, the ninth switch, and the eleventh switch are all turned on. The seventh state includes a state in which the first switch, the fifth switch, the seventh switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on; The first mode includes: the first state, the second state, and the fifth state; the second mode includes: the second state, the third state, and the fourth state; the third mode includes: the fifth state, the sixth state, and the seventh state.

6. The charging management circuit as described in claim 3, characterized in that, The processing unit includes a first circuit and a second circuit. The first circuit is connected to the first terminal of the first switch, the second terminal of the first bridge arm switch, the first terminal of the second bridge arm switch, and the battery. The first circuit is used to charge the battery in response to the positive half-cycle signal. The second circuit is connected to the first terminal of the second switch, the second terminal of the third bridge arm switch, the first terminal of the fourth bridge arm switch, and the battery, respectively. The second circuit is used to charge the battery in response to the positive signal.

7. The charging management circuit as described in claim 6, characterized in that, The first circuit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, a first capacitor, a second capacitor, and a third capacitor; The control electrode of the third switch is connected to the controller, the first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor, and the second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller, the first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor, and the second electrode of the fourth switch is connected to the first electrode of the third capacitor and the first electrode of the eighth switch. The control electrode of the fifth switch is connected to the controller, the first electrode of the fifth switch is also connected to the first electrode of the second capacitor, and the second electrode of the fifth switch is connected to the battery, the first electrode of the sixth switch, the first electrode of the ninth switch, and the second electrode of the eighth switch, respectively. The control terminal of the sixth switch is connected to the controller, the first terminal of the sixth switch is also connected to the battery, and the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch, respectively. The control electrode of the seventh switch is connected to the controller, the first electrode of the seventh switch is also connected to the second electrode of the second capacitor, and the second electrode of the seventh switch is connected to the ground terminal; The control terminal of the eighth switch is connected to the controller, the first terminal of the eighth switch is also connected to the first terminal of the third capacitor, and the second terminal of the eighth switch is also connected to the battery. The control electrode of the ninth switch is connected to the controller, the first electrode of the ninth switch is also connected to the battery, and the second electrode of the ninth switch is connected to the second electrode of the third capacitor and the first electrode of the tenth switch, respectively. The control electrode of the tenth switch is connected to the controller, the first electrode of the tenth switch is also connected to the second electrode of the third capacitor, and the second electrode of the tenth switch is connected to the ground terminal.

8. The charging management circuit as described in claim 7, characterized in that, The controller is also configured to: control the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state in response to the positive half-cycle signal; 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 ninth switch are all turned on. The second state includes a state in which the second switch, the third switch, the fifth switch, the seventh switch, the eighth switch, and the tenth switch are all turned on; The third state includes a state in which the second switch, the third switch, the sixth switch, the eighth switch, and the tenth switch are all turned on. The first mode includes: the first state and the second state; the second mode includes: the first state, the second state, and the third state.

9. The charging management circuit as described in any one of claims 6-8, characterized in that, The second circuit includes: 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 electrode of the eleventh switch is connected to the controller, the first electrode of the eleventh switch is connected to the first electrode of the thirteenth switch and the first electrode of the fifth capacitor, and the second electrode of the eleventh switch is connected to the first electrode of the second switch, the second electrode of the fourth capacitor and the first electrode of the fourth bridge arm switch. The control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is connected to the second terminal of the third bridge arm switch and the first terminal of the fourth capacitor, and the second terminal of the twelfth switch is connected to the first terminal of the sixth capacitor and the first terminal of the sixteenth switch. 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, and the second terminal of the thirteenth switch is connected to the battery, the first terminal of the fourteenth switch, the first terminal of the seventeenth switch, and the second terminal of the sixteenth switch, respectively. The control terminal of the fourteenth switch is connected to the controller, the first terminal of the fourteenth switch is also connected to the battery, and the second terminal of the fourteenth switch is connected to the second terminal of the fifth capacitor and the first terminal of the fifteenth switch, respectively. The control terminal of the fifteenth switch is connected to the controller, the first terminal of the fifteenth switch is also connected to the second terminal of the fifth capacitor, and the second terminal of the fifteenth switch is connected to the ground terminal; 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, and 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 also connected to the battery, and the second terminal of the seventeenth switch is connected to the second terminal of the sixth capacitor and the first terminal of the eighteenth switch, respectively. 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, and the second terminal of the eighteenth switch is connected to the ground terminal.

10. The charging management circuit as described in claim 9, characterized in that, The controller is also configured to: in response to the positive signal, control the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; The fourth state includes a state in which the first switch, the second 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 first switch, the eleventh 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 first switch, the eleventh switch, the fourteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; The first mode includes: the fourth state and the fifth state; the third mode includes: the fourth state, the fifth state, and the sixth state.

11. The charging management circuit as described in claim 6, characterized in that, The first circuit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor; The control electrode of the third switch is connected to the controller, the first electrode of the third switch is connected to the second electrode of the fifth switch, the first electrode of the sixth switch, and the battery, and the second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller, the first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor, and the second electrode of the fourth switch is connected to the first electrode of the second capacitor and the first electrode of the fifth switch. The control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is also connected to the first 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 also connected to the battery, and the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch, respectively. The control electrode of the seventh switch is connected to the controller, the first electrode of the seventh switch is also connected to the second electrode of the second capacitor, and the second electrode of the seventh switch is connected to the grounding terminal.

12. The charging management circuit as described in claim 11, characterized in that, The controller is also configured to: control the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state in response to the positive half-cycle signal; The first state includes a state in which the first switch, the second switch, the fifth switch, and the seventh switch are all turned on. The second state includes a state where the second switch, the third switch, the fifth switch, and the seventh switch are all turned on; The third state includes a state in which the first switch, the second switch, the fourth switch, and the sixth switch are all turned on; The first mode includes: the first state and the second state; the second mode includes: the second state and the third state.

13. The charging management circuit as described in any one of claims 6, 11, and 12, characterized in that, The second circuit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor; The control electrode of the eighth switch is connected to the controller, the first electrode of the eighth switch is connected to the second electrode of the tenth switch, the first electrode of the eleventh switch, and the battery, and the second electrode of the eighth switch is connected to the first electrode of the second switch, the second electrode of the third capacitor, and the first electrode of the fourth bridge arm switch. The control electrode of the ninth switch is connected to the controller, the first electrode of the ninth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor, and the second electrode of the ninth switch is connected to the first electrode of the fourth capacitor and the first electrode of the tenth switch. The control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is also connected to the first terminal of the fourth capacitor, and the second terminal of the tenth switch is also connected to the battery. The control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is also connected to the battery, and the second terminal of the eleventh switch is connected to the second terminal of the fourth capacitor and the first terminal of the twelfth switch respectively. The control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is also connected to the second terminal of the fourth capacitor, and the second terminal of the twelfth switch is connected to the ground terminal.

14. The charging management circuit as described in claim 13, characterized in that, The controller is also configured to: in response to the positive signal, control the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; The fourth state includes a state in which the first switch, the second switch, the tenth switch, and the twelfth switch are all turned on. The fifth state includes a state in which the first switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on; The sixth state includes a state in which the first switch, the second switch, the ninth switch, and the eleventh switch are all turned on; The first mode includes: the fourth state and the fifth state; the third mode includes: the fifth state and the sixth state.

15. The charging management circuit as described in claim 6, characterized in that, The first circuit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor; The control electrode of the third switch is connected to the controller, the first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor, and the second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller, the first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor, and the second electrode of the fourth switch is connected to the battery, the second circuit, the second electrode of the fifth switch and the first electrode of the sixth switch. The control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is also connected to the first 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 also connected to the battery, and the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch, respectively. The control electrode of the seventh switch is connected to the controller, the first electrode of the seventh switch is also connected to the second electrode of the second capacitor, and the second electrode of the seventh switch is connected to the grounding terminal.

16. The charging management circuit as described in claim 15, characterized in that, The controller is also configured to: control the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state in response to the positive half-cycle signal; The first state includes a state in which the first switch, the second switch, the fourth switch, the fifth switch, and the seventh switch are all turned on. The second state includes a state where the second switch, the third switch, the fifth switch, and the seventh switch are all turned on; The third state includes a state in which the second switch, the third switch, and the sixth 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.

17. The charging management circuit as described in any one of claims 6, 15, and 16, characterized in that, The second circuit includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor; The control electrode of the eighth switch is connected to the controller, the first electrode of the eighth switch is connected to the first electrode of the tenth switch and the first electrode of the fourth capacitor, and the second electrode of the eighth switch is connected to the first electrode of the second switch, the second electrode of the third capacitor and the first electrode of the fourth bridge arm switch. The control electrode of the ninth switch is connected to the controller, the first electrode of the ninth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor, and the second electrode of the ninth switch is connected to the battery, the second electrode of the tenth switch, the first electrode of the eleventh switch and the first circuit. The control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is also connected to the first terminal of the fourth capacitor, and the second terminal of the tenth switch is also connected to the battery. The control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is also connected to the battery, and the second terminal of the eleventh switch is connected to the second terminal of the fourth capacitor and the first terminal of the twelfth switch respectively. The control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is also connected to the second terminal of the fourth capacitor, and the second terminal of the twelfth switch is connected to the ground terminal.

18. The charging management circuit as described in claim 17, characterized in that, The controller is also configured to: in response to the positive signal, control the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; The fourth state includes a state in which the first switch, the second switch, the ninth switch, the tenth switch, and the twelfth switch are all turned on. The fifth state includes a state in which the first switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on; The sixth state includes a state in which the first switch, the eighth switch, and the eleventh switch are all turned on; The first mode includes the fourth state; the third mode includes the fourth state, the fifth state, and the sixth state.

19. A wireless charging system, characterized in that, include: A charging device and at least one power receiving device, the power receiving device comprising: a battery, and a charging management circuit as described in any one of claims 1-18; The charging device is used to: provide electromagnetic waves to the charging management circuit; The charging management circuit is used to charge the battery in response to the electromagnetic wave.

20. An electronic device, characterized in that, include: The charging management circuit and the battery as described in any one of claims 1-18, wherein the charging management circuit is connected to the battery.

21. A charging method, characterized in that, The charging method includes: The power receiver responds to the wireless transmission of electrical energy by outputting an AC signal to the midpoint between the first and second arms. In response to the positive half-cycle signal of the AC signal, the controller controls the first bridge arm, the second bridge arm, the first switch, and the second switch to output the positive half-cycle signal to the processing unit, so that the processing unit charges the battery in response to the positive half-cycle signal. The controller responds to the negative half-cycle signal of the AC signal, controls the first bridge arm, the second bridge arm, the first switch, and the second switch to convert the negative half-cycle signal into a positive signal and output it to the processing unit, so that the processing unit charges the battery in response to the positive signal. The power receiver is connected to the midpoint of the first bridge arm and also to the midpoint of the second bridge arm. The first pole of the first switch is connected to the first transmission terminal of the processing unit, the second pole of the first switch is connected to the ground terminal, and the control pole of the first switch is connected to the controller. The first pole of the second switch is connected to the second transmission terminal of the processing unit, the second pole of the second switch is connected to the ground terminal, and the control pole of the second switch is connected to the controller. The first bridge arm is also connected to the first transmission terminal, the third transmission terminal of the processing unit, and the controller, respectively. The second bridge arm is also connected to the second transmission terminal, the fourth transmission terminal of the processing unit, and the controller, respectively. The first, second, third, and fourth transmission terminals are all different. The output terminal of the processing unit is used to connect to the battery.

22. The charging method as described in claim 21, characterized in that, In response to a positive half-cycle signal of the AC signal, controlling the first bridge arm, the second bridge arm, the first switch, and the second switch to output the positive half-cycle signal to the processing unit includes: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the processing unit to switch between a first state, a second state, a third state, and a fourth state. 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 third 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 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 fourth transmission terminal; 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 second transmission terminal; the second electrode 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 processing unit includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor; the control electrode of the third switch is connected to the controller, and the first electrode of the third switch is connected to the second electrode of the fourth switch, the first electrode of the fifth switch, and the first electrode of the second capacitor, respectively; the second electrode of the third switch is connected to the first electrode of the first switch and the second electrode of the first capacitor, respectively; the control electrode of the fourth switch is connected to the controller, and the first electrode of the fourth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor, respectively; the second electrode of the fourth switch is also connected to the first electrode of the second capacitor; the control electrode of the fifth switch is connected to the controller, and the first electrode of the fifth switch is also connected to the first electrode of the second capacitor, respectively; the second electrode of the fifth switch is connected to the battery, the first electrode of the sixth switch, the second electrode of the ninth switch, and the first electrode of the tenth switch, respectively; the control electrode of the sixth switch is connected to the controller, and the first electrode of the sixth switch is also connected to the battery; the second electrode of the sixth switch is connected to the second electrode of the second capacitor and the first electrode of the seventh switch, respectively; the control electrode of the seventh switch... The first terminal of the seventh switch is connected to the controller, and the first terminal of the seventh switch is also connected to the second terminal of the second capacitor. The second terminal of the seventh switch is connected to the ground terminal. The control terminal of the eighth switch is connected to the controller, and the first terminal of the eighth switch is connected to the first terminal of the first capacitor and the second terminal of the first bridge arm switch. The second terminal of the eighth switch is connected to the first terminal of the fourth capacitor, the first terminal of the ninth switch, and the first terminal of the twelfth switch. The control terminal of the ninth switch is connected to the controller, and the first terminal of the ninth switch is also connected to the first terminal of the fourth capacitor. The second terminal of the ninth switch is also connected to the battery. 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 connected to the second terminal of the fourth capacitor and the first terminal of the eleventh switch, respectively. The control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is also connected to the second terminal of the fourth capacitor, and the second terminal of the eleventh switch is connected to the ground terminal. The control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is also connected to the first terminal of the fourth capacitor, and the second terminal of the twelfth switch is connected to the second terminal of the third capacitor and the first terminal of the second switch, respectively. The first state includes: the state in which the first switch, the second switch, the fourth switch, the sixth switch, the eighth switch, and the tenth switch are all turned on; the second state includes: the state in which the second switch, the third switch, the fifth switch, the seventh switch, the ninth switch, and the eleventh switch are all turned on; the third state includes: the state in which the first switch, the second switch, the fifth switch, the seventh switch, the eighth switch, and the tenth switch are all turned on; the fourth state includes: the state in which the second switch, the third switch, the fourth switch, the sixth switch, the ninth switch, and the eleventh switch are all turned on. The first mode includes: the first state and the second state; the second mode includes: the second state, the third state, and the fourth state.

23. The charging method as described in claim 22, characterized in that, In response to the negative half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to convert the negative half-cycle signal into a positive signal and output it to the processing unit, including: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the processing unit to switch between a first state, a fifth state, a sixth state, and a seventh state. The third mode includes a mode where both the second bridge arm switch and the third bridge arm switch are turned on; the fourth state includes a state where the second switch, the third switch, the fourth switch, the sixth switch, the ninth switch, and the eleventh switch are all turned on; the fifth state includes a state where the first switch, the fifth switch, the seventh switch, the ninth switch, the eleventh switch, and the twelfth switch are all turned on; the sixth state includes a state where the first switch, the second switch, the fourth switch, the sixth switch, the ninth switch, and the eleventh switch are all turned on; the seventh state includes a state where the first switch, the fifth switch, the seventh switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on. The first mode also includes the fifth state, and the third mode includes the fifth state, the sixth state, and the seventh state.

24. The charging method as described in claim 21, characterized in that, In response to the positive half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to output the positive half-cycle signal to the processing unit, including: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state. 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 third 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 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 fourth transmission terminal; 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 second transmission terminal; the second electrode 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 processing unit includes the first circuit, which includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, a first capacitor, a second capacitor, and a third capacitor. The control electrode of the third switch is connected to the controller. The first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor. The second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller. The first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor. The second electrode of the fourth switch is connected to the first electrode of the third capacitor and the first electrode of the eighth switch. The control electrode of the fifth switch is connected to the controller. The first electrode of the fifth switch is also connected to the first electrode of the second capacitor. The second electrode of the fifth switch is connected to the battery, the first electrode of the sixth switch, and the tenth switch. The first pole of the switch and the second pole of the eighth switch are connected; the control pole of the sixth switch is connected to the controller, the first pole of the sixth switch is also connected to the battery, and the second pole of the sixth switch is connected to the second pole of the second capacitor and the first pole of the seventh switch; the control pole of the seventh switch is connected to the controller, the first pole of the seventh switch is also connected to the second pole of the second capacitor, and the second pole of the seventh switch is connected to the ground terminal; the control pole of the eighth switch is connected to the controller, the first pole of the eighth switch is also connected to the first pole of the third capacitor, and the second pole of the eighth switch is also connected to the battery; the control pole of the ninth switch is connected to the controller, the first pole of the ninth switch is also connected to the battery, and the second pole of the ninth switch is connected to the second pole of the third capacitor and the first pole of the tenth switch; the control pole of the tenth switch is connected to the controller, the first pole of the tenth switch is also connected to the second pole of the third capacitor, and the second pole of the tenth switch is connected to the ground terminal; 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 ninth switch are all turned on; the second state includes: the state in which the second switch, the third switch, the fifth switch, the seventh switch, the eighth switch, and the tenth switch are all turned on; the third state includes: the state in which the second switch, the third switch, the sixth switch, the eighth switch, and the tenth switch are all turned on. The first mode includes: the first state and the second state; the second mode includes: the first state, the second state, and the third state.

25. The charging method as described in claim 21 or 24, characterized in that, In response to the negative half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to convert the negative half-cycle signal into a positive signal and output it to the processing unit, including: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 third 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 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 fourth transmission terminal; 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 second transmission terminal; the second electrode 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 third mode includes a mode in which both the second bridge arm switch and the third bridge arm switch are turned on. The processing unit includes the second circuit, which includes: 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 electrode of the eleventh switch is connected to the controller. The first electrode of the eleventh switch is connected to the first electrode of the thirteenth switch and the first electrode of the fifth capacitor. The second electrode of the eleventh switch is connected to the first electrode of the second switch, the second electrode of the fourth capacitor, and the first electrode of the fourth bridge arm switch. The control electrode of the twelfth switch is connected to the controller. The first electrode of the twelfth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the fourth capacitor. The second electrode of the twelfth switch is connected to the first electrode of the sixth capacitor and the first electrode of the sixteenth switch. The control electrode of the thirteenth switch is connected to the controller. The first electrode of the thirteenth switch is also connected to the first electrode of the fifth capacitor. The second electrode of the thirteenth switch is connected to the battery, the first electrode of the fourteenth switch, and the tenth capacitor. The first pole of the seventh switch and the second pole of the sixteenth switch are connected; the control pole of the fourteenth switch is connected to the controller, the first pole of the fourteenth switch is also connected to the battery, and the second pole of the fourteenth switch is connected to the second pole of the fifth capacitor and the first pole of the fifteenth switch; the control pole of the fifteenth switch is connected to the controller, the first pole of the fifteenth switch is also connected to the second pole of the fifth capacitor, and the second pole of the fifteenth switch is connected to the ground terminal; the control pole of the sixteenth switch is connected to the controller, the first pole of the sixteenth switch is also connected to the first pole of the sixth capacitor, and the second pole of the sixteenth switch is also connected to the battery; the control pole of the seventeenth switch is connected to the controller, the first pole of the seventeenth switch is also connected to the battery, and the second pole of the seventeenth switch is connected to the second pole of the sixth capacitor and the first pole of the eighteenth switch; the control pole of the eighteenth switch is connected to the controller, the first pole of the eighteenth switch is also connected to the second pole of the sixth capacitor, and the second pole of the eighteenth switch is connected to the ground terminal; The fourth state includes a state where the first switch, the second switch, the twelfth switch, the thirteenth switch, the fifteenth switch, and the seventeenth switch are all turned on; the fifth state includes a state where the first switch, the eleventh switch, the thirteenth switch, the fifteenth switch, the sixteenth switch, and the eighteenth switch are all turned on; the sixth state includes a state where the first switch, the eleventh switch, the fourteenth switch, the sixteenth switch, and the eighteenth switch are all turned on. The first mode includes: the fourth state and the fifth state; the third mode includes: the fourth state, the fifth state, and the sixth state.

26. The charging method as described in claim 21, characterized in that, In response to the positive half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to output the positive half-cycle signal to the processing unit, including: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state. 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 third 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 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 fourth transmission terminal; 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 second transmission terminal; the second electrode 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 processing unit includes the first circuit, which includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor. The control electrode of the third switch is connected to the controller. The first electrode of the third switch is connected to the second electrode of the fifth switch, the first electrode of the sixth switch, and the battery. The second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch. The control electrode of the fourth switch is connected to the controller. The first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor. The second terminal of the switch is connected to the first terminal of the second capacitor and the first terminal of the fifth switch, respectively; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is also connected to the first 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 also connected to the battery, the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch, respectively; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the second terminal of the second capacitor, and the second terminal of the seventh switch is connected to the ground terminal; The first state includes: the state in which the first switch, the second switch, the fifth switch, and the seventh switch are all turned on; the second state includes: the state in which the second switch, the third switch, the fifth switch, and the seventh switch are all turned on; the third state includes: the state in which the first switch, the second switch, the fourth switch, and the sixth switch are all turned on. The first mode includes: the first state and the second state; the second mode includes: the second state and the third state.

27. The charging method as described in claim 21 or 26, characterized in that, In response to the negative half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to convert the negative half-cycle signal into a positive signal and output it to the processing unit, including: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 third 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 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 fourth transmission terminal; 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 second transmission terminal; the second electrode 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 third mode includes a mode in which both the second bridge arm switch and the third bridge arm switch are turned on. The processing unit includes the second circuit, which includes: an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a third capacitor, and a fourth capacitor. The control electrode of the eighth switch is connected to the controller. The first electrode of the eighth switch is connected to the second electrode of the tenth switch, the first electrode of the eleventh switch, and the battery. The second electrode of the eighth switch is connected to the first electrode of the second switch, the second electrode of the third capacitor, and the first electrode of the fourth bridge arm switch. The control electrode of the ninth switch is connected to the controller. The first electrode of the ninth switch is connected to the second electrode of the third bridge arm switch and the first electrode of the third capacitor. The second terminal is connected to the first terminal of the fourth capacitor and the first terminal of the tenth switch, respectively; the control terminal of the tenth switch is connected to the controller, the first terminal of the tenth switch is also connected to the first terminal of the fourth capacitor, and the second terminal of the tenth switch is also connected to the battery; the control terminal of the eleventh switch is connected to the controller, the first terminal of the eleventh switch is also connected to the battery, and the second terminal of the eleventh switch is connected to the second terminal of the fourth capacitor and the first terminal of the twelfth switch, respectively; the control terminal of the twelfth switch is connected to the controller, the first terminal of the twelfth switch is also connected to the second terminal of the fourth capacitor, and the second terminal of the twelfth switch is connected to the ground terminal; The fourth state includes a state where the first switch, the second switch, the tenth switch, and the twelfth switch are all turned on; the fifth state includes a state where the first switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on; the sixth state includes a state where the first switch, the second switch, the ninth switch, and the eleventh switch are all turned on. The first mode includes: the fourth state and the fifth state; the third mode includes: the fifth state and the sixth state.

28. The charging method as described in claim 21, characterized in that, In response to the positive half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to output the positive half-cycle signal to the processing unit, including: in response to the positive half-cycle signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a second mode; and in response to the positive half-cycle signal, controlling the first switch, the second switch, and the first circuit to switch between a first state, a second state, and a third state. 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 third 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 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 fourth transmission terminal; 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 second transmission terminal; the second electrode 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 processing unit includes the first circuit, which includes: a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a first capacitor, and a second capacitor. The control electrode of the third switch is connected to the controller. The first electrode of the third switch is connected to the first electrode of the fifth switch and the first electrode of the second capacitor, respectively. The second electrode of the third switch is connected to the first electrode of the first switch, the second electrode of the first capacitor, and the first electrode of the second bridge arm switch, respectively. The control electrode of the fourth switch is connected to the controller. The first electrode of the fourth switch is connected to the second electrode of the first bridge arm switch and the first electrode of the first capacitor, respectively. The second electrode of the fourth switch is connected to... The battery, the second circuit, the second terminal of the fifth switch, and the first terminal of the sixth switch are connected; the control terminal of the fifth switch is connected to the controller, the first terminal of the fifth switch is also connected to the first 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 also connected to the battery, and the second terminal of the sixth switch is connected to the second terminal of the second capacitor and the first terminal of the seventh switch; the control terminal of the seventh switch is connected to the controller, the first terminal of the seventh switch is also connected to the second terminal of the second capacitor, and the second terminal of the seventh switch is connected to the ground terminal; The first state includes: the state in which the first switch, the second switch, the fourth switch, the fifth switch, and the seventh switch are all turned on; the second state includes: the state in which the second switch, the third switch, the fifth switch, and the seventh switch are all turned on; the third state includes: the state in which the second switch, the third switch, and the sixth 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.

29. The charging method as described in claim 21 or 28, characterized in that, In response to the negative half-cycle signal of the AC signal, the first bridge arm, the second bridge arm, the first switch, and the second switch are controlled to convert the negative half-cycle signal into a positive signal and output it to the processing unit, including: in response to the positive signal, controlling the first bridge arm and the second bridge arm to switch between a first mode and a third mode; and in response to the positive signal, controlling the first switch, the second switch, and the second circuit to switch between a fourth state, a fifth state, and a sixth state; 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 electrode of the first bridge arm switch is connected to the positive electrode of the power receiver and the second electrode of the second bridge arm switch, respectively. The second electrode of the first bridge arm switch is connected to the third transmission terminal. The control electrode of the second bridge arm switch is connected to the controller. The first electrode of the second bridge arm switch is connected to the first transmission terminal. The second electrode 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 third 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 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 fourth transmission terminal; 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 second transmission terminal; the second electrode 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 third mode includes a mode in which both the second bridge arm switch and the third bridge arm switch are turned on. The processing unit includes the second circuit, which includes: 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 eighth switch is connected to the controller. The first terminal of the eighth switch is connected to the first terminal of the tenth switch and the first terminal of the fourth capacitor. The second terminal of the eighth switch is connected to the first terminal of the second switch, the second terminal of the third capacitor, and the first terminal of the fourth bridge arm switch. The control terminal of the ninth switch is connected to the controller. The first terminal of the ninth switch is connected to the second terminal of the third bridge arm switch and the first terminal of the third capacitor. The second terminal of the ninth switch is connected to the capacitor. The battery, the second pole of the tenth switch, the first pole of the eleventh switch, and the first circuit are connected; the control pole of the tenth switch is connected to the controller, the first pole of the tenth switch is also connected to the first pole of the fourth capacitor, and the second pole of the tenth switch is also connected to the battery; the control pole of the eleventh switch is connected to the controller, the first pole of the eleventh switch is also connected to the battery, and the second pole of the eleventh switch is connected to the second pole of the fourth capacitor and the first pole of the twelfth switch respectively; the control pole of the twelfth switch is connected to the controller, the first pole of the twelfth switch is also connected to the second pole of the fourth capacitor, and the second pole of the twelfth switch is connected to the ground terminal; The fourth state includes a state where the first switch, the second switch, the ninth switch, the tenth switch, and the twelfth switch are all turned on; the fifth state includes a state where the first switch, the eighth switch, the tenth switch, and the twelfth switch are all turned on; the sixth state includes a state where the first switch, the eighth switch, and the eleventh switch are all turned on. The first mode includes the fourth state; the third mode includes the fourth state, the fifth state, and the sixth state.

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