Charging control method, charging circuit, charging equipment and storage medium

Abstract

The invention relates to a charging control method, a charging circuit, charging equipment and a storage medium. The controller determines a charging voltage of at least one charging device connected to the plurality of output ports. And determining the optimal output voltage of the rectification circuit based on the charging voltage of the at least one charging device, and adjusting the output voltage of the rectification circuit to the optimal output voltage. Therefore, the output efficiency of the step-down circuit is improved, and heat generated by the step-down circuit is reduced. If the optimal output voltage is the maximum charging voltage value in the charging voltages of the at least one charging device, determining a first step-down circuit connected in series with an output port connected with a target charging device of which the charging voltage is the maximum charging voltage, and controlling a first switching circuit connected in parallel with the first step-down circuit to be in an on state, therefore, the output efficiency of the step-down circuit is further improved, and the heat generated by the step-down circuit is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of computer technologies, and particularly to a charging control method, a charging circuit, a charging device, and a storage medium. Background Art

[0002] With the rapid iteration of technological products, people have more and more demands for electronic products. Common ones include smart phones, tablet computers, smart wearables, etc. If each electronic product is equipped with a charger, it will not only occupy space resources but also cause waste of resources.

[0003] To save resources, some multi-port chargers have emerged on the market. A charger can contain multiple output ports. When multiple devices need to be charged simultaneously, the charger needs to use a buck circuit to meet the charging requirements of different devices at different voltages. For example, a laptop computer needs 20V voltage for charging, and a smart phone needs 5V voltage for charging.

[0004] Since different charging devices require different charging voltages, in the actual charging process, the difference between the charging voltages required by different devices and the input voltage of the buck circuit may be very large. The greater the difference between the input voltage and the output voltage of the buck circuit, the lower the output efficiency, resulting in more heat generated by the buck circuit. As a result, the shell temperature and device temperature of the charger become higher, affecting the user experience. Summary of the Invention

[0005] The present disclosure provides a charging control method, a charging circuit, a charging device, and a storage medium to solve the deficiencies in the related art.

[0006] According to the first aspect of the embodiments of the present disclosure, a charging control method is proposed, including:

[0007] Determine the charging voltage of at least one charging device connected to multiple output ports; wherein, the output ports are used to supply power to the connected charging devices based on the charging voltage.

[0008] Based on the charging voltage of the at least one charging device, determine the optimal output voltage of the rectification circuit, and adjust the output voltage of the rectification circuit to the optimal output voltage.

[0009] If the optimal output voltage is the maximum charging voltage value among the charging voltages of the at least one charging device, determine the first buck circuit connected in series with the output port to which the target charging device with the maximum charging voltage is connected, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

[0010] Optionally, the method further includes:

[0011] If only one of the multiple output ports is connected to a charging device, determine the charging voltage of the charging device connected to the current output port;

[0012] Adjust the output voltage of the rectifier circuit to the charging voltage of the charging device connected to the current output port;

[0013] Determine the first buck circuit connected in series with the current output port, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

[0014] Optionally, the determining the optimal output voltage of the rectifier circuit based on the charging voltages of the at least one charging device includes:

[0015] Calculate the first overall efficiency that the charging circuit can achieve when the output voltage of the rectifier circuit is the maximum charging voltage value among the charging voltages of the at least one charging device;

[0016] Calculate the second overall efficiency that the charging circuit can achieve when the output voltage of the rectifier circuit is a preset output voltage value; wherein, the preset output voltage value is the output voltage of the rectifier circuit corresponding to different charging voltages pre - saved;

[0017] If the first overall efficiency is greater than the second overall efficiency, determine the maximum charging voltage value as the optimal output voltage of the rectifier circuit;

[0018] If the first overall efficiency is not greater than the second overall efficiency, determine the preset output voltage value as the optimal output voltage of the rectifier circuit.

[0019] Optionally, the method further includes:

[0020] If the optimal output voltage of the rectifier circuit is the preset output voltage value, control the first switch circuit connected in parallel with the first buck circuit to be in the off state to turn on the first buck circuit.

[0021] Optionally, the method further includes:

[0022] Determine the actual power required by at least one charging device connected to multiple output ports;

[0023] If the actual power is greater than the rated power of the first buck circuit, determine the second buck circuit for auxiliary power supply to the target charging device;

[0024] Supply power to the target charging device based on the charging voltage of the target charging device by the first buck circuit and the second buck circuit.

[0025] Optionally, the second buck circuit configured to assist in power supply to the target charging device includes:

[0026] Determine the number of second buck circuits for assisting in power supply to the target charging device according to the difference between the actual power and the rated power;

[0027] Select, from the output ports among the plurality of output ports that are not connected to a charging device, the second buck circuits for assisting in power supply corresponding to the number;

[0028] Control the second switch circuits corresponding to the number in series between the output port to which the target charging device is connected and other output ports to be in an on state, so as to form a path between the output port to which the target charging device is connected and other output ports.

[0029] According to a second aspect of the embodiments of the present disclosure, a charging circuit is provided, including:

[0030] A plurality of output ports for supplying power to the connected charging device based on a charging voltage; wherein, a second switch circuit is connected in series between any two of the plurality of output ports;

[0031] A plurality of buck circuits connected in parallel, each of the plurality of buck circuits being connected in series with one of the plurality of output ports respectively, for providing the charging voltage after step-down processing of the input voltage for the corresponding output port; wherein, a first switch circuit is connected in parallel with each of the plurality of buck circuits;

[0032] A rectifier circuit connected in series with the plurality of buck circuits, for providing an input voltage for the plurality of buck circuits based on an output voltage;

[0033] A controller connected in series with the plurality of output ports, the plurality of buck circuits, the rectifier circuit, the plurality of first switch circuits, and the plurality of second switch circuits respectively, for controlling the output voltage of the rectifier circuit, the switch states of the first switch circuits, and the switch states of the plurality of second switch circuits.

[0034] Optionally, the rectifier circuit includes: a synchronous rectifier circuit.

[0035] According to a third aspect of the embodiments of the present disclosure, a charging control device is provided, the device including:

[0036] A determination module for determining the charging voltage of at least one charging device connected to a plurality of output ports; wherein, the output port is used to supply power to the connected charging device based on the charging voltage;

[0037] An adjustment module, configured to determine an optimal output voltage of a rectification circuit based on a charging voltage of the at least one charging device, and adjust the output voltage of the rectification circuit to the optimal output voltage;

[0038] A control module, configured to, if the optimal output voltage is the maximum charging voltage value among the charging voltages of the at least one charging device, determine a first buck circuit connected in series with an output port to which a target charging device with the charging voltage being the maximum charging voltage is connected, and control a first switch circuit connected in parallel with the first buck circuit to be in an on state, so as to turn off the first buck circuit.

[0039] Optionally, the controller maintains a correspondence between a set output voltage of the rectification circuit and a combination of charging voltages; the combination of charging voltages is a combination constructed by charging voltages of each charging device among the at least one charging device; the power supply module includes:

[0040] A calculation module, configured to calculate a first overall efficiency that the charging circuit can achieve when determining the output voltage of the rectification circuit as the maximum charging voltage among the at least one charging device;

[0041] A query module, configured to query the correspondence between the set output voltage of the rectification circuit and the combination of charging voltages, determine the set output voltage of the rectification circuit based on the charging voltages of the at least one charging device, and calculate a second overall efficiency that the charging circuit can achieve when determining the output voltage of the rectification circuit as the set output voltage of the rectification circuit;

[0042] An adjustment module, configured to, if it is determined that the first overall efficiency is greater than the second overall efficiency, adjust the output voltage of the rectification circuit to the maximum charging voltage; if it is determined that the first overall efficiency is not greater than the second overall efficiency, determine the set output voltage of the rectification circuit as the optimal output voltage of the rectification circuit.

[0043] Optionally, the device further includes:

[0044] A determination module, configured to, if only one output port among a plurality of output ports is connected with a charging device, determine the charging voltage of the charging device connected to the current output port;

[0045] An adjustment module, configured to adjust the output voltage of the rectification circuit to the charging voltage of the charging device connected to the current output port;

[0046] A control module, configured to determine a first buck circuit connected in series with the current output port, and control a first switch circuit connected in parallel with the first buck circuit to be in an on state, so as to turn off the first buck circuit.

[0047] Optionally, the adjustment module includes:

[0048] A first calculation module, configured to calculate a first overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is the maximum charging voltage value among the charging voltages of the at least one charging device;

[0049] A second calculation module, configured to calculate a second overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is a preset output voltage value; wherein, the preset output voltage value is the output voltage of the rectification circuit corresponding to different charging voltages pre-stored;

[0050] A first determination module, configured to determine the maximum charging voltage value as the optimal output voltage of the rectification circuit if the first overall efficiency is greater than the second overall efficiency;

[0051] A second determination module, configured to determine the preset output voltage value as the optimal output voltage of the rectification circuit if the first overall efficiency is not greater than the second overall efficiency.

[0052] Optionally, the device further includes:

[0053] An enabling module, configured to control a first switch circuit connected in parallel with the first buck circuit to be in a closed state to turn on the first buck circuit if the optimal output voltage of the rectification circuit is the preset output voltage value.

[0054] Optionally, the device further includes:

[0055] A determination module, configured to determine the actual power required by at least one charging device connected to a plurality of output ports;

[0056] An auxiliary power supply module, configured to determine a second buck circuit for auxiliary power supply to the target charging device if the actual power is greater than the rated power of the first buck circuit;

[0057] A power supply module, configured to supply power to the target charging device based on the charging voltage of the target charging device by the first buck circuit and the second buck circuit.

[0058] Optionally, the auxiliary power supply module includes:

[0059] A determination module, configured to determine the number of second buck circuits for auxiliary power supply to the target charging device according to the difference between the actual power and the rated power;

[0060] A selection module, configured to select second buck circuits for auxiliary power supply corresponding to the number from the output ports among the plurality of output ports that are not connected to charging devices.

[0061] A control module, configured to control a second switch circuit corresponding to the quantity and connected in series between an output port accessed by the target charging device and other output ports to be in an on state, so as to form a path between the output port accessed by the target charging device and other output ports.

[0062] According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic device, including:

[0063] A memory and a processor;

[0064] The processor is configured to read and execute instructions in the memory to implement the above charging control method.

[0065] According to a fifth aspect of the embodiments of the present disclosure, there is provided an electronic device including the above charging circuit.

[0066] According to a sixth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is configured to implement the above charging control method.

[0067] The technical solutions provided by the embodiments of the present disclosure may at least include the following beneficial effects:

[0068] According to the embodiments of the present disclosure, the controller determines the charging voltages of at least one charging device accessed by multiple output ports. Based on the charging voltages of the at least one charging device, the optimal output voltage of the rectification circuit is determined, and the output voltage of the rectification circuit is adjusted to the optimal output voltage. Thus, the output efficiency of the buck circuit is improved, and the heat generated by the buck circuit is reduced. If the optimal output voltage is the maximum charging voltage value among the charging voltages of the at least one charging device, a first buck circuit connected in series with the output port accessed by the target charging device with the charging voltage being the maximum charging voltage is determined, and a first switch circuit connected in parallel with the first buck circuit is controlled to be in an on state to turn off the first buck circuit, further improving the output efficiency of the buck circuit and reducing the heat generated by the buck circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0070] Figure 1 FIG. is a schematic diagram of a charging circuit shown according to the embodiments of the present disclosure.

[0071] Figure 2It is a schematic flowchart of a charging control method shown according to an embodiment of the present disclosure.

[0072] Figure 3 It is based on Figure 2 Another schematic flowchart of a charging control method shown based on the illustrated embodiment.

[0073] Figure 4 It is based on Figure 2 Another schematic flowchart of a charging control method shown based on the illustrated embodiment.

[0074] Figure 5 It is based on Figure 2 Another schematic diagram of a charging control method shown based on the illustrated embodiment.

[0075] Figure 6 It is based on Figure 2 Another schematic flowchart of a charging control method shown based on the illustrated embodiment.

[0076] Figure 7 It is based on Figure 2 Another schematic flowchart of a charging control method shown based on the illustrated embodiment.

[0077] Figure 8 It is another schematic diagram of a charging circuit shown according to an embodiment of the present disclosure.

[0078] Figure 9 It is a schematic block diagram of a charging control device shown according to an embodiment of the present disclosure.

[0079] Figure 10 It is based on Figure 9 Another schematic block diagram of a charging control device shown based on the illustrated embodiment.

[0080] Figure 11 It is based on Figure 9 Another schematic block diagram of a charging control device shown based on the illustrated embodiment.

[0081] Figure 12 It is based on Figure 9 Another schematic block diagram of a charging control device shown based on the illustrated embodiment.

[0082] Figure 13 It is based on Figure 9 Another schematic block diagram of a charging control device shown based on the illustrated embodiment.

[0083] Figure 14 It is based on Figure 9 Another schematic block diagram of a charging control device shown based on the illustrated embodiment.

[0084] Figure 15 is a schematic block diagram of a charging control device shown according to an embodiment of the present disclosure. Detailed implementation manners

[0085] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0086] Since the charging voltages required by different charging devices are different, during the actual charging process, the difference between the charging voltages required by different devices and the input voltage of the buck circuit may be very large. And the greater the difference between the input voltage and the output voltage of the buck circuit, the lower the output efficiency, resulting in more heat generated by the buck circuit. Thus, the temperature of the charger's outer shell and components becomes higher, affecting the user experience.

[0087] Please refer to Figure 1 , Figure 1 is a schematic diagram of a charging circuit shown according to an embodiment of the present disclosure.

[0088] As Figure 1 shown, the charging circuit includes: a plurality of output ports, a plurality of buck circuits, a rectification circuit, a plurality of first switch circuits, a plurality of second switch circuits, and a controller.

[0089] The plurality of output ports are used to supply power to the connected charging devices based on the charging voltage. Among them, a second switch circuit is connected in series between any two of the plurality of output ports.

[0090] The plurality of buck circuits connected in parallel, and the plurality of buck circuits are respectively connected in series with the plurality of output ports one by one, and are used to provide the charging voltage after bucking the input voltage for the corresponding output port. Among them, a first switch circuit is connected in parallel with each of the plurality of buck circuits.

[0091] The rectification circuit is connected in series with the plurality of buck circuits and is used to provide the input voltage for the plurality of buck circuits based on the output voltage.

[0092] In the rectification circuit, the primary winding of the transformer is connected to one end of the rectifier, the other end of the primary winding of the transformer is connected to the drain of the first MOS transistor, the PWM controller is connected to the gate of the first MOS transistor, and the source of the first MOS transistor is grounded. The secondary winding of the transformer is connected to the capacitor.

[0093] A controller, which is connected in series with a plurality of output ports, a plurality of buck circuits, a rectifier circuit, a plurality of first switch circuits, and a plurality of second switch circuits respectively, is configured to control the output voltage of the rectifier circuit, the switching states of the first switch circuits, and the switching states of the plurality of second switch circuits.

[0094] For example, Output Port 1 and Output Port 2 are connected in series through Second Switch Circuit 1, Output Port 2 and Output Port 3 are connected in series through Second Switch Circuit 2, and Output Port 3 and Output Port 4 are connected in series through Second Switch Circuit 3. Among them, if there are N output ports, there can be N - 1 second switch circuits. Of course, if a second switch circuit is connected in series between any two of the N output ports, there can be N / 2 second switch circuits.

[0095] Take Figure 1 as an example. Hereinafter, a charging control method provided by the present disclosure will be introduced through specific embodiments in combination with specific application scenarios.

[0096] In the embodiments of the present disclosure, the charging devices involved may specifically include but are not limited to mobile phones, tablet computers, wearable devices, Internet of Things devices, etc.

[0097] Please refer to Figure 2 , Figure 2 which is a schematic flowchart of a charging control method shown according to an embodiment of the present disclosure. As Figure 2 shown, the charging control method may include the following steps:

[0098] In step 202, determine the charging voltage of at least one charging device connected to a plurality of output ports; wherein, the output ports are configured to supply power to the connected charging devices based on the charging voltage.

[0099] In a possible implementation, the controller determines the charging voltage of at least one charging device connected to a plurality of output ports. Among them, the output ports are configured to supply power to the connected charging devices based on the charging voltage.

[0100] Among them, the controller communicates with at least one charging device connected to the output ports to determine the charging protocols supported by the at least one charging device. The controller may determine the charging voltage of the at least one charging device according to the charging protocols supported by the at least one charging device.

[0101] When the controller cannot communicate with one of the at least one charging device, the controller may determine the charging voltage of the charging device as the default voltage.

[0102] In step 204, based on the charging voltages of the at least one charging device, determine the optimal output voltage of the rectifier circuit, and adjust the output voltage of the rectifier circuit to the optimal output voltage.

[0103] In practical applications, the charging voltages required by different charging devices are different. A multi-port charger needs to meet the charging voltages of different charging devices, resulting in a relatively high fixed output voltage of the rectifier circuit in the multi-port charger. The lower the charging voltage of the charging device connected to the multi-port charger, the lower the output efficiency of the buck circuit corresponding to the charging device. As a result, the overall efficiency of the multi-port charger is relatively low.

[0104] In a possible implementation, based on the charging voltages of the at least one charging device, determine the optimal output voltage of the rectifier circuit, and adjust the output voltage of the rectifier circuit to the optimal output voltage.

[0105] As can be seen from the above embodiments, the optimal output voltage of the rectifier circuit can be adjusted to the maximum charging voltage of the charging device, avoiding the problem of too large a gap between the output voltage of the rectifier circuit and the charging voltage of the charging device, and improving the output efficiency of the buck circuit corresponding to the at least one charging device.

[0106] In step 206, if the optimal output voltage is the maximum charging voltage value among the charging voltages of the at least one charging device, determine the first buck circuit connected in series with the output port to which the target charging device with the maximum charging voltage is connected, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

[0107] In practical applications, the buck circuit consumes a certain amount of electrical energy, resulting in the output voltage being less than the input voltage. When the output voltage of the rectifier circuit is adjusted to the maximum charging voltage, the voltage output by the buck circuit connected in series with the output port to which the charging device with the maximum charging voltage is connected will be less than the maximum charging voltage, reducing the charging efficiency of the charging device with the maximum charging voltage.

[0108] In a possible implementation, if the optimal output voltage is the maximum charging voltage value among the charging voltages of the at least one charging device, determine the first buck circuit connected in series with the output port to which the target charging device with the maximum charging voltage is connected, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

[0109] Therefore, the controller can form a path between the output port to which the target charging device with the charging voltage being the maximum charging voltage is connected and the rectifying circuit, so that the rectifying circuit outputs the maximum charging voltage to the output port to which the target charging device with the charging voltage being the maximum charging voltage is connected, and supplies power to the target charging device with the charging voltage being the maximum charging voltage. Thus, the problem that the voltage output by the first buck circuit connected in series with the output port to which the target charging device with the charging voltage being the maximum charging voltage is connected is less than the maximum charging voltage is avoided, and the charging efficiency for the charging device with the maximum charging voltage is also improved.

[0110] It should be noted that when there are multiple charging devices with the charging voltage being the maximum charging voltage among at least one charging device connected to the output port, the controller can determine the first buck circuit connected in series with the output ports to which the multiple charging devices with the charging voltage being the maximum charging voltage are connected, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

[0111] Please refer to Figure 3 , Figure 3 is a schematic flowchart of another charging control method shown based on the embodiments shown in Figure 2 . As shown in Figure 3 , the method may further include:

[0112] In step 302, if only one output port among multiple output ports is connected to a charging device, determine the charging voltage of the charging device connected to the current output port.

[0113] In step 304, adjust the output voltage of the rectifying circuit to the charging voltage of the charging device connected to the current output port.

[0114] In step 306, determine the first buck circuit connected in series with the current output port, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

[0115] In a possible implementation, if only one output port among multiple output ports is connected to a charging device, determine the charging voltage of the charging device connected to the current output port.

[0116] Then, adjust the output voltage of the rectifying circuit to the charging voltage of the charging device connected to the current output port.

[0117] Next, determine the first buck circuit connected in series with the current output port, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

[0118] As can be seen from the above embodiments, adjusting the output voltage of the rectifier circuit to the charging voltage of the charging device connected to the current output port avoids the problem of too large a gap between the output voltage of the rectifier circuit and the charging voltage of the charging device connected to the current output port. Moreover, controlling the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit further improves the charging efficiency of the charging device connected to the current output port.

[0119] In practical applications, the overall efficiency of the charging circuit consists of two parts: the output efficiency of the rectifier circuit and the output efficiency of the buck circuit. During the process of adjusting the output voltage of the rectifier circuit, the lower the output voltage of the rectifier circuit, the lower the output efficiency of the rectifier circuit. And the smaller the difference between the output voltage of the rectifier circuit and the output voltage of the buck circuit, the higher the output efficiency of the buck circuit. That is to say, when the output efficiency of the buck circuit is the highest, the overall efficiency of the charging circuit is not necessarily the highest.

[0120] Please refer to Figure 4 , Figure 4 is a schematic flowchart of another charging control method shown based on the Figure 2 illustrated embodiments. As shown in Figure 4 , the method may include:

[0121] In step 402, calculate the first overall efficiency that the charging circuit can achieve when the output voltage of the rectifier circuit is the maximum charging voltage value among the charging voltages of the at least one charging device.

[0122] In a possible implementation, calculate the first overall efficiency that the charging circuit can achieve when the output voltage of the rectifier circuit is the maximum charging voltage value among the charging voltages of the at least one charging device.

[0123] Among them, when the output voltage of the rectifier circuit is determined to be the maximum charging voltage value among the at least one charging device, the controller can obtain the output power of the power grid system and the input power of the at least one charging device. Then, based on the output power of the power grid system and the input power of the at least one charging device, calculate the first overall efficiency that the charging circuit can achieve.

[0124] In step 404, calculate the second overall efficiency that the charging circuit can achieve when the output voltage of the rectifier circuit is a preset output voltage value. Wherein, the preset output voltage value is the output voltage of the rectifier circuit corresponding to different charging voltages pre - saved.

[0125] In a possible implementation, when the output voltage of the rectification circuit is the preset output voltage value, calculate the second overall efficiency that the charging circuit can achieve. The preset output voltage value is the output voltage of the rectification circuit corresponding to different charging voltages pre-stored.

[0126] Specifically, the controller maintains the correspondence between the preset output voltage value and the charging voltage combination. The charging voltage combination is a combination constructed from the charging voltages of each charging device in at least one charging device. Query the correspondence between the preset output voltage value and the charging voltage combination, determine the preset output voltage value of the rectification circuit based on the charging voltages of at least one charging device, and calculate the second overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is determined as the preset output voltage value.

[0127] For example, when the controller determines that the charging voltage of charging device A connected to the output port is 20V, the charging voltage of charging device B is 15V, and the charging voltage of charging device C is 11V, determine the charging voltage combination (20V, 15V, 11V). Then, query the correspondence between the preset output voltage value and the charging voltage combination in the controller. Next, based on the charging voltage combination (20V, 15V, 11V), determine that the preset output voltage value of the rectification circuit is 22V.

[0128] It should be noted that the correspondence between the preset output voltage value of the rectification circuit and the charging voltage combination can be obtained by technicians through actual tests.

[0129] In step 406, if the first overall efficiency is greater than the second overall efficiency, determine the maximum charging voltage value as the optimal output voltage of the rectification circuit.

[0130] In a possible implementation, if the first overall efficiency is greater than the second overall efficiency, determine the maximum charging voltage value as the optimal output voltage of the rectification circuit.

[0131] In a possible implementation, output the maximum charging voltage to the first buck circuits connected in series to the output ports to which at least one other charging device other than the charging device with the charging voltage of the maximum charging voltage value is connected. The buck circuits perform buck processing based on the maximum charging voltage and supply power to the at least one other charging device connected based on the charging voltage obtained after bucking.

[0132] For example, when the controller determines that the charging voltage of charging device A connected to the output port is 20V, the charging voltage of charging device B is 15V, and the charging voltage of charging device C is 11V, if the first overall efficiency is greater than the second overall efficiency, it is determined that the output voltage of the rectification circuit is 20V, and the first switching circuit 1 is controlled to be in the on state to form a path between output port 1 and the rectification circuit, so that the rectification circuit outputs 20V to output port 1 to supply power to the charging device with 20V. 20V is output to buck circuit 2, and buck circuit 2 performs a buck process based on 20V and supplies power to the connected charging device B based on the 15V obtained after bucking. And 20V is output to buck circuit 3, and buck circuit 3 performs a buck process based on 20V and supplies power to the connected charging device C based on the 11V obtained after bucking.

[0133] As can be seen from the above embodiments, the buck circuit performs a buck process based on the maximum charging voltage and supplies power to at least one other connected charging device based on the charging voltage obtained after bucking. Thus, the charging circuit can charge multiple charging devices simultaneously.

[0134] In step 408, if the first overall efficiency is not greater than the second overall efficiency, then it is determined that the preset output voltage value is the optimal output voltage of the rectification circuit.

[0135] In a possible implementation, if the first overall efficiency is not greater than the second overall efficiency, then it is determined that the preset output voltage value is the optimal output voltage of the rectification circuit.

[0136] For example, the controller can calculate the first overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is the maximum charging voltage value among the charging voltages of at least one charging device.

[0137] Secondly, the controller can calculate the second overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is the preset output voltage value.

[0138] If the first overall efficiency is greater than the second overall efficiency, then it is determined that the maximum charging voltage value is the optimal output voltage of the rectification circuit. The first buck circuit connected in series with the output port to which the target charging device with the charging voltage being the maximum charging voltage is connected is determined, and the first switching circuit connected in parallel with the first buck circuit is controlled to be in the on state to turn off the first buck circuit.

[0139] If the first overall efficiency is not greater than the second overall efficiency, then it is determined that the preset output voltage value is the optimal output voltage of the rectification circuit.

[0140] As can be seen from the above embodiments, by calculating the first overall efficiency and the second overall efficiency, the charging voltage value with the highest overall efficiency is determined from the maximum charging voltage value and the preset output voltage value, and used as the optimal output voltage of the rectification circuit, thereby improving the overall efficiency of the charging circuit.

[0141] Please refer to Figure 5 , Figure 5 which is Figure 2 a schematic diagram of another charging control method shown based on the embodiments illustrated. As Figure 5 shown, the method may further include:

[0142] In step 502, if the optimal output voltage of the rectification circuit is the preset output voltage value, control the first switch circuit in parallel with the first buck circuit to be in the off state to turn on the first buck circuit.

[0143] In a possible implementation, if the optimal output voltage of the rectification circuit is the preset output voltage value, control the first switch circuit in parallel with the first buck circuit to be in the off state to turn on the first buck circuit. The rectification circuit provides an input voltage to the first buck circuits respectively connected in series with at least one output port to which at least one charging device is connected based on the preset output voltage value of the rectification circuit. The first buck circuits perform buck processing on the input voltage and supply power to the at least one connected charging device based on the charging voltage obtained after bucking.

[0144] For example, when the controller determines that the charging voltage of charging device A connected to the output port is 20V, the charging voltage of charging device B is 15V, and the charging voltage of charging device C is 11V, the charging voltage combination (20V, 15V, 11V) is determined. Then, the correspondence between the preset output voltage value and the charging voltage combination is queried in the controller. Next, based on the charging voltage combination (20V, 15V, 11V), the preset output voltage value of the rectification circuit is determined to be 22V. If the first overall efficiency is not greater than the second overall efficiency, it is determined that the output voltage of the rectification circuit is 22V, and the first switch circuit 1 in parallel with buck circuit 1 and the first switch circuit 2 in parallel with buck circuit 2 are controlled to be in the off state, so that the rectification circuit provides 22V to buck circuit 1, buck circuit 2, and buck circuit 3 based on 22V. Buck circuit 1, buck circuit 2, and buck circuit 3 perform buck processing on 22V, and supply power to connected charging device A based on the 20V obtained after bucking, supply power to connected charging device B based on the 15V obtained after bucking, and supply power to connected charging device C based on the 11V obtained after bucking.

[0145] As can be seen from the above embodiments, by calculating the first overall efficiency and the second overall efficiency, the charging voltage value with the highest overall efficiency is determined from the maximum charging voltage value and the preset output voltage value, and used as the optimal output voltage of the rectifier circuit, and the switching state of the first switching circuit is controlled accordingly, thereby improving the overall efficiency of the charging circuit.

[0146] Please refer to Figure 6 , Figure 6 which is Figure 2 a schematic flowchart of another charging control method shown based on the embodiments shown. As Figure 6 shown, the method may further include:

[0147] In step 602, determine the actual power required by at least one charging device connected to multiple output ports.

[0148] In a possible implementation, determine the actual power required by at least one charging device connected to multiple output ports.

[0149] Among them, communication is carried out between the controller and at least one charging device connected to the output port to determine the charging protocol supported by at least one charging device. The controller can determine the charging voltage and charging current of at least one charging device according to the charging protocol supported by at least one charging device. Then, according to the charging voltage and charging current required by the target charging device, determine the power required by the target charging device.

[0150] When communication cannot be carried out between the controller and one of the at least one charging device, the controller can determine the charging voltage of the charging device as the default voltage and the charging current as the default current. According to the default voltage and the default current, determine the default power required by the target charging device.

[0151] In step 604, if the actual power is greater than the rated power of the first buck circuit, determine the second buck circuit for auxiliary power supply to the target charging device.

[0152] In step 606, the target charging device is powered by the first buck circuit and the second buck circuit based on the charging voltage of the target charging device.

[0153] In practical applications, the larger the rated power of the buck circuit, the larger the capacitance and inductance in the buck circuit. In order to ensure that each output port in the multi-port charger can supply power to high-power charging devices, the capacitance and inductance in the buck circuit corresponding to each output port will be very large, resulting in a larger volume of the charger, which is not conducive to carrying. Moreover, the cost of the larger capacitance and inductance is relatively high.

[0154] In a possible implementation, if the actual power is greater than the rated power of the first buck circuit, a second buck circuit for auxiliary power supply to the target charging device is determined.

[0155] Then, the first buck circuit and the second buck circuit supply power to the target charging device based on the charging voltage of the target charging device.

[0156] As can be seen from the above embodiments, when a high-power charging device is connected to the output port, the first buck circuit and the second buck circuit supply power to the target charging device based on the charging voltage of the target charging device. Thus, on the basis of meeting the power supply to the high-power charging device, the volume of the capacitor and inductor in each buck circuit can be reduced, and then the volume of the charging circuit can be reduced, which is convenient for users to carry and also reduces the manufacturing cost.

[0157] Moreover, when multiple buck circuits supply power to a high-power charging device and are evenly distributed, the generated heat will be dispersed and will not concentrate at a certain point, which is convenient for heat dissipation.

[0158] Please refer to Figure 7 , Figure 7 which is Figure 2 a schematic flowchart of another charging control method shown on the basis of the embodiments shown. As Figure 7 shown, the method may further include:

[0159] In step 702, according to the difference between the actual power and the rated power, determine the number of second buck circuits for auxiliary power supply to the target charging device.

[0160] In step 704, select the second buck circuits for auxiliary power supply corresponding to the number from the output ports among the multiple output ports that are not connected to a charging device.

[0161] In step 706, control the second switch circuits corresponding to the number in series between the output port to which the target charging device is connected and other output ports to be in an on state, and form a path between the output port to which the target charging device is connected and other output ports.

[0162] In a possible implementation, according to the difference between the actual power and the rated power, determine the number of second buck circuits for auxiliary power supply to the target charging device.

[0163] Then, select the second buck circuits for auxiliary power supply corresponding to the number from the output ports among the multiple output ports that are not connected to a charging device.

[0164] Finally, control the second switch circuits connected in series between the output port to which the target charging device is connected and other output ports to be in the on state, so as to form a path between the output port to which the target charging device is connected and other output ports. The first buck circuit connected in series with the output port to which the target charging device is connected and the second buck circuits connected in series with the corresponding number of other output ports supply power to the target charging device based on the charging voltage of the target charging device.

[0165] For example, it is determined that the power required by charging device A is 20W, the power required by charging device B is 60W, and the rated power of the buck circuit is 20W.

[0166] If it is determined that the power required by charging device B is greater than the rated power of the buck circuit, according to the difference between the power required by charging device B and the rated power of the buck circuit, determine that the number of second buck circuits for auxiliary power supply to charging device B is 2, and select two second buck circuits for auxiliary power supply from other output ports except output port 1 and output port 2. Control the second switch circuit 2 connected in series between the output port to which charging device B is connected and output port 3 to be in the on state, and control the second switch circuit 3 connected in series between output port 3 and output port 4 to be in the on state, so as to form a path between output port 2, output port 3, and output port 4 to which charging device B is connected. The buck circuit 3 and the buck circuit 4 supply power to charging device B based on the charging voltage.

[0167] It can be seen from the above embodiments that when a high-power charging device is connected to the output port, the second switch circuits connected in series between the output ports can be controlled. The first buck circuit connected in series with the output port to which the high-power charging device is connected and the second buck circuits connected in series with other output ports supply power to the high-power charging device based on the charging voltage of the high-power charging device. Thus, on the basis of meeting the power supply to the high-power charging device, the volume of the capacitor and inductor in each buck circuit can be reduced, and then the volume of the charging circuit can be reduced, which is convenient for users to carry and also reduces the manufacturing cost.

[0168] Moreover, when multiple buck circuits supply power to a high-power charging device and are evenly distributed, the generated heat will be dispersed and will not concentrate at a certain point, which is convenient for heat dissipation.

[0169] In the embodiments of the present disclosure, taking Figure 1 as an example, when the controller determines that the charging voltage of charging device A connected to output port 1 is 20V and the charging voltage of charging device B connected to output port 2 is 10V, determine the charging voltage combination (20V, 10V). Then, query the correspondence between the preset output voltage value and the charging voltage combination in the controller. Next, based on the charging voltage combination (20V, 10V), determine that the preset output voltage value is 22V.

[0170] The controller can calculate the first overall efficiency that the charging circuit can achieve when the output voltage of the rectifier circuit is 20V, and calculate the second overall efficiency that the charging circuit can achieve when the output voltage of the rectifier circuit is 22V.

[0171] If the first overall efficiency is greater than the second overall efficiency, it is determined that the output voltage of the rectifier circuit is 20V, and the first switch circuit 1 is controlled to be in the on state, forming a path between the output port 1 and the rectifier circuit, so that the rectifier circuit outputs 20V to the output port 1, supplies power to the 20V charging device, and outputs 20V to the buck circuit 2. The buck circuit performs buck processing based on 20V and supplies power to the connected charging device B based on the 10V obtained after bucking.

[0172] If the first overall efficiency is not greater than the second overall efficiency, it is determined that the output voltage of the rectifier circuit is 22V, and the first switch circuit 1 connected in parallel with the buck circuit 1 and the first switch circuit 2 connected in parallel with the buck circuit 2 are controlled to be in the off state, so that the rectifier circuit supplies 22V to the buck circuit 1 and the buck circuit 2 based on 22V. The buck circuit 1 and the buck circuit 2 perform buck processing on 22V, and supply power to the connected charging device A based on the 20V obtained after bucking, and supply power to the connected charging device B based on the 10V obtained after bucking.

[0173] Next, it is determined that the power required by the charging device A is 20W, the power required by the charging device B is 60W, and the rated power of the buck circuit is 20W.

[0174] If it is determined that the power required by the charging device B is greater than the rated power of the buck circuit, according to the difference between the power required by the charging device B and the rated power of the buck circuit, the number of the second buck circuits for auxiliary power supply to the charging device B is determined to be 2, and two second buck circuits for auxiliary power supply are selected from other output ports other than the output port 1 and the output port 2. The second switch circuit 2 connected in series between the output port where the charging device B is connected and the output port 3 is controlled to be in the on state, and the second switch circuit 3 connected in series between the output port 3 and the output port 4 is controlled to be in the on state, forming a path between the output port 2, the output port 3, and the output port 4 where the charging device B is connected. The buck circuit 3 and the buck circuit 4 supply power to the charging device B based on 10V.

[0175] In the embodiment of the present disclosure, the rectifier circuit includes: a synchronous rectifier circuit.

[0176] Please refer to Figure 8 , Figure 8 which is a schematic diagram of another charging circuit shown according to the embodiment of the present disclosure.

[0177] As Figure 8As shown in the figure, the charging circuit includes: a plurality of output ports, a plurality of buck circuits, a rectification circuit, a plurality of first switch circuits, a plurality of second switch circuits, and a controller.

[0178] A plurality of output ports for powering the connected charging devices based on the charging voltage. Among them, a second switch circuit is connected in series between any two of the plurality of output ports.

[0179] A plurality of buck circuits connected in parallel, each of the plurality of buck circuits being connected in series with one of the plurality of output ports respectively, for providing a charging voltage after bucking the input voltage for the corresponding output port. Among them, a first switch circuit is connected in parallel with each of the plurality of buck circuits.

[0180] A synchronous rectification circuit connected in series with the plurality of buck circuits, for providing an input voltage for the plurality of buck circuits based on the output voltage.

[0181] In the synchronous rectification circuit, the primary winding of the transformer is connected to one end of the rectifier, the other end of the primary winding of the transformer is connected to the drain of the first MOS transistor, the PWM controller is connected to the gate of the first MOS transistor, and the source of the first MOS transistor is grounded.

[0182] One end of the secondary winding of the transformer is connected to the drain of the second MOS transistor, the other end of the secondary winding of the transformer is connected to the capacitor, the SR controller is connected to the gate of the second MOS transistor, and the capacitor is connected to the source of the second MOS transistor.

[0183] The controller is connected in series with the plurality of output ports, the plurality of buck circuits, the rectification circuit, the plurality of first switch circuits, and the plurality of second switch circuits respectively, for controlling the output voltage of the rectification circuit, the switching state of the first switch circuit, and the switching state of the plurality of second switch circuits.

[0184] Corresponding to the embodiments of the foregoing charging control method, the present disclosure also provides embodiments of a charging control device.

[0185] Please refer to Figure 9 , Figure 9 which is a schematic block diagram of a charging control device shown according to an embodiment of the present disclosure. As Figure 9 shown, the device may include:

[0186] A determination module 902 for determining the charging voltage of at least one charging device connected to the plurality of output ports; wherein, the output port is used to power the connected charging device based on the charging voltage;

[0187] An adjustment module 904 for determining the optimal output voltage of the rectification circuit based on the charging voltage of the at least one charging device, and adjusting the output voltage of the rectification circuit to the optimal output voltage;

[0188] A control module 906, configured to, if the optimal output voltage is the maximum charging voltage value among the charging voltages of the at least one charging device, determine a first buck circuit connected in series with the output port to which the target charging device with the charging voltage being the maximum charging voltage is connected, and control a first switch circuit connected in parallel with the first buck circuit to be in an on state, so as to turn off the first buck circuit.

[0189] Please refer to Figure 10 , Figure 10 which is Figure 9 a schematic block diagram of another charging control device shown based on the embodiment shown. As Figure 10 shown, the device may further include:

[0190] A determination module 1002, configured to, if only one output port among a plurality of output ports is connected to a charging device, determine the charging voltage of the charging device connected to the current output port;

[0191] An adjustment module 1004, configured to adjust the output voltage of the rectification circuit to the charging voltage of the charging device connected to the current output port;

[0192] A control module 1006, configured to determine a first buck circuit connected in series with the current output port, and control a first switch circuit connected in parallel with the first buck circuit to be in an on state, so as to turn off the first buck circuit.

[0193] Please refer to Figure 11 , Figure 11 which is Figure 9 a schematic block diagram of another charging control device shown based on the embodiment shown. As Figure 11 shown, the adjustment module includes:

[0194] A first calculation module 1102, configured to calculate a first overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is the maximum charging voltage value among the charging voltages of the at least one charging device;

[0195] A second calculation module 1104, configured to calculate a second overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is a preset output voltage value; wherein, the preset output voltage value is the output voltage of the rectification circuit corresponding to different charging voltages and stored in advance;

[0196] A first determination module 1106, configured to, if the first overall efficiency is greater than the second overall efficiency, determine the maximum charging voltage value as the optimal output voltage of the rectification circuit;

[0197] A second determination module 1108, configured to determine the preset output voltage value as the optimal output voltage of the rectification circuit if the first overall efficiency is not greater than the second overall efficiency.

[0198] Please refer to Figure 12 , Figure 12 which is Figure 9 a schematic block diagram of another charging control device shown based on the embodiment shown. As Figure 12 shown, the device may further include:

[0199] An enabling module 1202, configured to control a first switch circuit connected in parallel with the first buck circuit to be in a closed state to turn on the first buck circuit if the optimal output voltage of the rectification circuit is the preset output voltage value.

[0200] Please refer to Figure 13 , Figure 13 which is Figure 9 a schematic block diagram of another charging control device shown based on the embodiment shown. As Figure 13 shown, the device further includes:

[0201] A determination module 1302, configured to determine the actual power required by at least one charging device connected to a plurality of output ports;

[0202] An auxiliary power supply module 1304, configured to determine a second buck circuit for auxiliary power supply to the target charging device if the actual power is greater than the rated power of the first buck circuit;

[0203] A power supply module 1306, configured to supply power to the target charging device based on the charging voltage of the target charging device by the first buck circuit and the second buck circuit.

[0204] Please refer to Figure 14 , Figure 14 which is Figure 9 a schematic block diagram of another charging control device shown based on the embodiment shown. As Figure 14 shown, the auxiliary power supply module includes:

[0205] A determination module 1402, configured to determine the number of second buck circuits for auxiliary power supply to the target charging device according to the difference between the actual power and the rated power;

[0206] A selection module 1404, configured to select second buck circuits for auxiliary power supply corresponding to the number from the output ports among the plurality of output ports that are not connected to charging devices.

[0207] A control module 1406 is configured to control a second switch circuit corresponding to the quantity and connected in series between an output port accessed by the target charging device and other output ports to be in an on state, so as to form a path between the output port accessed by the target charging device and other output ports.

[0208] Regarding the device in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments of the related methods, and will not be elaborated herein.

[0209] For the device embodiments, since they basically correspond to the method embodiments, reference may be made to the partial descriptions of the method embodiments for the relevant parts. The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed to multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present disclosure. A person of ordinary skill in the art can understand and implement it without creative effort.

[0210] Correspondingly, the present disclosure further provides an electronic device, including:

[0211] A memory and a processor;

[0212] The processor is configured to read and execute instructions in the memory to implement the above charging control method.

[0213] Correspondingly, the present disclosure further provides an electronic device including the above charging circuit.

[0214] Correspondingly, the present disclosure further provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the above charging control method is implemented.

[0215] As Figure 15 shown, Figure 15 is a schematic block diagram of a charging control device 1500 according to an embodiment of the present disclosure. For example, the device 1500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0216] Referring to Figure 15 , the device 1500 may include one or more of the following components: a processing component 1502, a memory 1504, a power supply component 1506, a multimedia component 1508, an audio component 1510, an input / output (I / O) interface 1512, a sensor component 1514, and a communication component 1516.

[0217] The processing component 1502 generally controls the overall operation of the device 1500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1502 may include one or more processors 1520 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 1502 may include one or more modules to facilitate the interaction between the processing component 1502 and other components. For example, the processing component 1502 may include a multimedia module to facilitate the interaction between the multimedia component 1508 and the processing component 1502.

[0218] The memory 1504 is configured to store various types of data to support the operation of the device 1500. Examples of such data include instructions for any application or method operating on the device 1500, contact data, phone book data, messages, pictures, videos, etc. The memory 1504 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0219] The power component 1506 provides power to various components of the device 1500. The power component 1506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 1500.

[0220] The multimedia component 1508 includes a screen that provides an output interface between the device 1500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may not only sense the boundaries of the touch or swipe actions, but also detect the duration and pressure associated with the touch or swipe operations. In some embodiments, the multimedia component 1508 includes a front camera and / or a rear camera. When the device 1500 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each of the front camera and the rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0221] The audio component 1510 is configured to output and / or input audio signals. For example, the audio component 1510 includes a microphone (MIC) that is configured to receive external audio signals when the device 1500 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 1504 or transmitted via the communication component 1516. In some embodiments, the audio component 1510 further includes a speaker for outputting audio signals.

[0222] The I / O interface 1512 provides an interface between the processing component 1502 and peripheral interface modules, and the peripheral interface modules may be a keyboard, a click wheel, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a power button, and a lock button.

[0223] The sensor component 1514 includes one or more sensors for providing an assessment of various aspects of the state of the device 1500. For example, the sensor component 1514 can detect the on / off state of the device 1500, the relative positioning of components, such as the display and keypad of the device 1500. The sensor component 1514 can also detect a change in the position of the device 1500 or a component of the device 1500, the presence or absence of user contact with the device 1500, the orientation or acceleration / deceleration of the device 1500, and a change in the temperature of the device 1500. The sensor component 1514 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 1514 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 1514 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0224] The communication component 1516 is configured to facilitate communication between the device 1500 and other devices in a wired or wireless manner. The device 1500 can access a wireless network based on communication standards, such as WiFi, 2G or 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 1516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1516 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0225] In an exemplary embodiment, the apparatus 1500 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the method described in any of the above embodiments.

[0226] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as the memory 1504 including instructions, and the above instructions can be executed by the processor 1520 of the apparatus 1500 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0227] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the disclosure herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and embodiments are to be considered as exemplary only, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0228] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

[0229] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms "comprising", "including" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0230] The methods and apparatuses provided by the embodiments of the present disclosure have been described in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the present disclosure. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present disclosure; at the same time, for those of ordinary skill in the art, according to the idea of the present disclosure, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present disclosure.

Claims

1. A charging control method, characterized in that, Including: Determine the charging voltage of at least one charging device connected to multiple output ports; wherein, the output ports are used to supply power to the connected charging devices based on the charging voltage; Determine the optimal output voltage of the rectification circuit based on the charging voltage of the at least one charging device, and adjust the output voltage of the rectification circuit to the optimal output voltage; If the optimal output voltage is the maximum charging voltage value among the charging voltages of the at least one charging device, determine the first buck circuit connected in series with the output port to which the target charging device with the charging voltage being the maximum charging voltage is connected, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

2. The method according to claim 1, characterized in that, The method further includes: If only one output port among the multiple output ports is connected to a charging device, determine the charging voltage of the charging device connected to the current output port; Adjust the output voltage of the rectification circuit to the charging voltage of the charging device connected to the current output port; Determine the first buck circuit connected in series with the current output port, and control the first switch circuit connected in parallel with the first buck circuit to be in the on state to turn off the first buck circuit.

3. The method according to claim 1, characterized in that The determining the optimal output voltage of the rectification circuit based on the charging voltage of the at least one charging device includes: Calculate the first overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is the maximum charging voltage value among the charging voltages of the at least one charging device; Calculate the second overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is a preset output voltage value; wherein, the preset output voltage value is the output voltage of the rectification circuit corresponding to different charging voltages pre - saved; If the first overall efficiency is greater than the second overall efficiency, determine the maximum charging voltage value as the optimal output voltage of the rectification circuit; If the first overall efficiency is not greater than the second overall efficiency, determine the preset output voltage value as the optimal output voltage of the rectification circuit.

4. The method according to claim 3, characterized in that The method further includes: If the optimal output voltage of the rectification circuit is the preset output voltage value, control the first switch circuit connected in parallel with the first buck circuit to be in the off state to turn on the first buck circuit.

5. The method according to claim 1, wherein The method further includes: Determine the actual power required by at least one charging device connected to multiple output ports; If the actual power is greater than the rated power of the first buck circuit, determine the second buck circuit for auxiliary power supply to the target charging device; The first buck circuit and the second buck circuit supply power to the target charging device based on the charging voltage of the target charging device.

6. The method according to claim 5, characterized in that, The determining the second buck circuit for auxiliary power supply to the target charging device includes: Determine the number of second buck circuits for auxiliary power supply to the target charging device according to the difference between the actual power and the rated power; Select the second buck circuits for auxiliary power supply corresponding to the number from the output ports among the multiple output ports that are not connected to charging devices; The second switch circuit corresponding to the quantity in series between the output port to which the target charging device is connected and other output ports is turned on, and a path is formed between the output port to which the target charging device is connected and other output ports.

7. A charging circuit, characterized in that, Comprising: A plurality of output ports for supplying power to the connected charging devices based on the charging voltage; wherein, a second switch circuit is connected in series between any two of the plurality of output ports; A plurality of step-down circuits connected in parallel, each of the plurality of step-down circuits being connected in series with one of the plurality of output ports respectively, for providing the charging voltage after step-down processing of the input voltage for the corresponding output port; wherein, a first switch circuit is connected in parallel with each of the plurality of step-down circuits; A rectification circuit connected in series with the plurality of step-down circuits, for providing the input voltage for the plurality of step-down circuits based on the output voltage; A controller connected in series with the plurality of output ports, the plurality of step-down circuits, the rectification circuit, the plurality of first switch circuits, and the plurality of second switch circuits respectively, for controlling the output voltage of the rectification circuit, the switch state of the first switch circuit, and the switch state of the plurality of second switch circuits.

8. The charging circuit according to claim 7, wherein The rectification circuit includes: a synchronous rectification circuit.

9. A charging control device, characterized in that, The device includes: A determination module for determining the charging voltage of at least one charging device connected to a plurality of output ports; wherein, the output port is used for supplying power to the connected charging device based on the charging voltage; An adjustment module for determining the optimal output voltage of the rectification circuit based on the charging voltage of the at least one charging device, and adjusting the output voltage of the rectification circuit to the optimal output voltage; A control module for determining the first step-down circuit connected in series with the output port to which the target charging device with the charging voltage being the maximum charging voltage value among the charging voltages of the at least one charging device is connected, and controlling the first switch circuit connected in parallel with the first step-down circuit to be turned on to turn off the first step-down circuit.

10. The device according to claim 9, characterized in that, The device further includes: A determination module for determining the charging voltage of the charging device connected to the current output port if only one output port among the plurality of output ports is connected to a charging device; An adjustment module for adjusting the output voltage of the rectification circuit to the charging voltage of the charging device connected to the current output port; A control module for determining the first step-down circuit connected in series with the current output port, and controlling the first switch circuit connected in parallel with the first step-down circuit to be turned on to turn off the first step-down circuit.

11. The device according to claim 9, characterized in that, The adjustment module includes: A first calculation module for calculating the first overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is the maximum charging voltage value among the charging voltages of the at least one charging device; A second calculation module for calculating the second overall efficiency that the charging circuit can achieve when the output voltage of the rectification circuit is a preset output voltage value; wherein, the preset output voltage value is the output voltage of the rectification circuit corresponding to different charging voltages saved in advance; A first determination module, configured to determine that the optimal output voltage of the rectification circuit is the maximum charging voltage value if the first overall machine efficiency is greater than the second overall machine efficiency; A second determination module, configured to determine that the optimal output voltage of the rectification circuit is the preset output voltage value if the first overall machine efficiency is not greater than the second overall machine efficiency.

12. The device according to claim 11, wherein The device further includes: An enabling module, configured to control a first switch circuit connected in parallel with the first buck circuit to be in a closed state to turn on the first buck circuit if the optimal output voltage of the rectification circuit is the preset output voltage value.

13. The device according to claim 9, wherein The device further includes: A determination module, configured to determine the actual power required by at least one charging device connected to a plurality of output ports; An auxiliary power supply module, configured to determine a second buck circuit for auxiliary power supply to the target charging device if the actual power is greater than the rated power of the first buck circuit; A power supply module, configured to supply power to the target charging device based on the charging voltage of the target charging device by the first buck circuit and the second buck circuit.

14. The device according to claim 13, characterized in that, The auxiliary power supply module includes: A determination module, configured to determine the number of second buck circuits for auxiliary power supply to the target charging device according to the difference between the actual power and the rated power; A selection module, configured to select second buck circuits for auxiliary power supply corresponding to the number from the output ports among the plurality of output ports that are not connected to charging devices; A control module, configured to control second switch circuits corresponding to the number connected in series between the output port to which the target charging device is connected and other output ports to be in an open state to form a path between the output port to which the target charging device is connected and other output ports.

15. An electronic device, characterized in that, It includes: A memory and a processor; The processor is configured to read and execute instructions in the memory to implement the charging control method according to any one of claims 1 to 6.

16. An electronic device, characterized in that, It includes a charging circuit according to claim 7 or 8.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer program, when executed by the processor, implements the method according to any one of claims 1 to 6.

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