Multi-port output charging circuit and charger

Abstract

The utility model discloses a multi-port output charging circuit and a charger. The multi-port output charging circuit is suitable for a charger and comprises a power supply circuit; the output circuit comprises at least two output ports; the switching circuit is connected with the at least two output ports; the control circuit is connected with the switching circuit and is used for controlling the on-off of the switching circuit; wherein the power supply circuit is sequentially connected with the output circuit, the switching circuit and the control circuit; the switching circuit controls the electrical connection condition of the at least two output ports, and when the switching circuit controls the at least two output ports to be conducted and connected, the at least two output ports alternately work and alternately output electric energy; when the switching circuit controls the output ports to be disconnected, each of the at least two output ports can work independently and output electric energy independently. The size of the whole multi-port output charger is reduced.

Description

Technical Field

[0001] The embodiments disclosed in this application relate to the field of electronic technology, and more specifically, to a multi-port output charging circuit and a charger. Background Technology

[0002] With the increasing number of consumer electronics products, the demand for multi-port charging is growing. The size of multi-port chargers is affected by many factors such as output power, internal structure, and number of ports. For example, high power output and multi-port design usually require more internal space to accommodate more electronic components and heat dissipation systems. However, multi-port output and small size have become the development trend of chargers. Utility Model Content

[0003] According to embodiments of this application, this application proposes a multi-port output charging circuit and charger to solve the above-mentioned problems.

[0004] The first aspect of this application discloses a multi-port output charging circuit, applicable to a charger, comprising: a power supply circuit; an output circuit including at least two output ports; a switching circuit connected to the at least two output ports; and a control circuit connected to the switching circuit for controlling the on / off state of the switching circuit; wherein the power supply circuit is sequentially connected to the output circuit, the switching circuit, and the control circuit; the switching circuit controls the electrical connection of the at least two output ports; when the switching circuit controls the at least two output ports to be connected, the at least two output ports work alternately, outputting electrical energy in an alternating manner; when the switching circuit controls the output ports to be disconnected, each of the at least two output ports can work independently, outputting electrical energy independently.

[0005] In some embodiments, the output circuit includes a first output port, a second output port, and a third output port, and the switching circuit includes a first switching sub-circuit, a second switching sub-circuit, and a third switching sub-circuit; the first switching sub-circuit is connected to the first output port and the second output port, the second switching sub-circuit is connected to the second output port and the third output port, and the third switching sub-circuit is connected to the first output port and the third output port.

[0006] In some embodiments, the control circuit controls the first switch sub-circuit to be turned on, and the second switch sub-circuit and the third switch sub-circuit to be turned off, so that the first output port and the second output port are connected and work alternately to output electrical energy to an external circuit; the control circuit controls the second switch sub-circuit to be turned on, and the first switch sub-circuit and the third switch sub-circuit to be turned off, so that the second output port and the third output port are connected and work alternately to output electrical energy to an external circuit; the control circuit controls the third switch sub-circuit to be turned on, and the first switch sub-circuit and the second switch sub-circuit to be turned off, so that the first output port and the third output port are connected and work alternately to output electrical energy to an external circuit.

[0007] In some embodiments, the control circuit controls the second and third switch sub-circuits to be turned on, and the first switch sub-circuit to be turned off, such that the first output port is connected to the third output port, and the third output port is connected to the second output port, and the first, second, and third output ports operate alternately; the control circuit controls the first and third switch sub-circuits to be turned on, and the second switch sub-circuit to be turned off, such that the first output port is connected to the second output port, and the first output port is connected to the third output port, and the first, second, and third output ports operate alternately; the control circuit controls the first and second switch sub-circuits to be turned on, and the third switch sub-circuit to be turned off, such that the first output port is connected to the second output port, and the second output port is connected to the third output port, and the first, second, and third output ports operate alternately.

[0008] In some embodiments, the control circuit controls the first switch sub-circuit, the second switch sub-circuit, and the third switch sub-circuit to disconnect, and the first output port, the second output port, and the third output port operate independently.

[0009] In some embodiments, the first switching sub-circuit includes a first diode and a first transistor; the drain of the first transistor is connected to the cathode of the first diode and the first output port, the source of the first transistor is connected to the anode of the first diode and the second output port, and the gate of the first transistor is connected to the control circuit; the second switching sub-circuit includes a second diode and a second transistor; the drain of the second transistor is connected to the cathode of the second diode and the second output port, the source of the second transistor is connected to the anode of the second diode and the third output port, and the gate of the second transistor is connected to the control circuit; the third switching sub-circuit includes a third diode and a third transistor; the drain of the third transistor is connected to the cathode of the third diode and the first output port, the source of the third transistor is connected to the anode of the third diode and the first output port, and the gate of the third transistor is connected to the control circuit.

[0010] In some embodiments, the output circuit includes n output ports, where n is a positive integer greater than or equal to 2, and the switching circuit includes m switching sub-circuits, where m = n*(n-1) / 2, and each switching sub-circuit is directly electrically connected to two output ports.

[0011] In some embodiments, the output circuit includes at least two sub-output circuits, the number of which is the same as the number of output ports and they are connected in a one-to-one correspondence; the control circuit is also connected to the at least two sub-output circuits respectively, and controls the at least two sub-output circuits to receive AC / DC signals from the power supply circuit; or the multi-port output charging circuit further includes an auxiliary control circuit, which is connected to the at least two sub-output circuits respectively, and controls the at least two sub-output circuits to receive AC / DC signals from the power supply circuit.

[0012] In some embodiments, the sub-output circuit includes a switching component and an output component, wherein: the switching component includes a fourth diode and a fourth transistor; the drain of the fourth transistor is connected to the cathode of the fourth diode and the power supply circuit, the source of the fourth transistor is connected to the anode of the fourth diode and the output component, and the gate of the fourth transistor is connected to the control circuit or the auxiliary control circuit; the output component includes a fifth diode, an inductor, and a capacitor; wherein the anode of the fifth diode is connected to the cathode of the capacitor, the cathode of the fifth diode is connected to one end of the inductor, and the output port is located between the other end of the inductor and the anode of the capacitor.

[0013] The second aspect of this application discloses a charger, including the multi-port output charging circuit described in the first aspect, and at least one physical port connected to the multi-port output charging circuit.

[0014] The beneficial effects of this application are as follows: the power supply circuit is sequentially connected to the output circuit, the switching circuit, and the control circuit. The control circuit controls the on / off state of the switching circuit, and the switching circuit controls the electrical connection of at least two output ports. Specifically, when the switching circuit controls the at least two output ports to be connected, the at least two output ports work alternately, outputting power in an interleaved manner. When the switching circuit controls the output ports to be disconnected, each of the at least two output ports can work independently, outputting power independently. This achieves the interleaved operating mode of each DC-DC converter controlled according to the output port requirements, reducing the size of the switching devices, magnetic cores, and capacitors in each output DC-DC conversion section, thereby saving costs and reducing the overall charger size. Attached Figure Description

[0015] The present application will be further described below with reference to the accompanying drawings and embodiments. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a multi-port output charging circuit according to an embodiment of this application;

[0017] Figure 2 This is a partial structural schematic diagram of a multi-port output charging circuit according to an embodiment of this application;

[0018] Figure 3 This is a partial structural schematic diagram of a multi-port output charging circuit according to another embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the structure of a switch sub-circuit according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the structure of a multi-port output charging circuit according to an embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the structure of a multi-port output charging circuit according to another embodiment of this application;

[0022] Figure 7 This is a partial structural illustration of a multi-port output charging circuit according to another embodiment of this application;

[0023] Figure 8 This is a schematic diagram of the structure of a multi-port output charging circuit according to another embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the charger structure according to an embodiment of this application. Detailed Implementation

[0025] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following related objects are in an "or" relationship. Furthermore, "many" in this application means two or more. Moreover, the term "at least one" in this application means any combination of at least two of any one or more of a plurality of objects. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C. Furthermore, the terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0027] To enable those skilled in the art to better understand the technical solution of this application, the technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a multi-port output charging circuit according to an embodiment of this application. The multi-port output charging circuit 100 includes a power supply circuit 10, an output circuit 20, a switch circuit 30, and a control circuit 40, wherein the power supply circuit 10 is sequentially connected to the output circuit 20, the switch circuit 30, and the control circuit 40.

[0029] The power supply circuit 10 can be an AC-DC circuit used to convert alternating current (AC) to direct current (DC). The output circuit 20 is connected to the power supply circuit 10 and includes at least two sub-output circuits 210 and at least two output ports 201. The number of sub-output circuits 210 and output ports 201 are the same and correspond one-to-one; for example, n sub-output circuits 210 correspond to n output ports 201. The output circuit 20 can also be a DC-DC circuit that converts DC voltage into a fixed or adjustable DC voltage. Each output port 201 is designed with corresponding parameters according to minimum power requirements, such as 5W, 7.5W, etc. A switching circuit 30 is connected to at least two output ports 201, and a control circuit 40 is connected to at least two output ports 201 through the switching circuit 30 and controls the on / off state of the switching circuit 30.

[0030] The switching circuit 30 controls the electrical connection of at least two output ports 201. When the switching circuit 30 controls the connection between the at least two output ports 201, the sub-output circuits 210 corresponding to the at least two output ports 201 work alternately, and electrical energy is output from the at least two output ports 201 in an alternating manner. When the switching circuit 30 controls the connection between the output ports 201 to be disconnected, the sub-output circuits 210 corresponding to each output port 201 work independently, that is, electrical energy can be output independently by a single output port 201.

[0031] In this embodiment, the power supply circuit 10 is sequentially connected to the output circuit 20, the switching circuit 30, and the control circuit 40. The control circuit 40 controls the on / off state of the switching circuit 30, and the switching circuit 30 controls the electrical connection of at least two output ports 201. When the switching circuit 30 controls the at least two output ports 201 to be connected, the at least two output ports 201 work alternately and output power in an interleaved manner. When the switching circuit 30 controls the output ports 201 to be disconnected, each of the at least two output ports 201 can work independently and output power independently. This realizes the interleaved working mode of each DC-DC converter according to the output port requirements, reduces the size of the switching devices, magnetic cores, and capacitors in each output DC-DC conversion section, and thus saves costs and reduces the overall size of the charger.

[0032] In some embodiments, such as Figure 2 As shown, Figure 2 This is a partial structural schematic diagram of a multi-port output charging circuit according to an embodiment of this application. The output circuit 20 includes a first output port 201a and a second output port 201b, the switch circuit 30 includes a first switch sub-circuit 310, and the control circuit 40 is connected to the first output port 201a and the second output port 201b through the first switch sub-circuit 310.

[0033] Specifically, the control circuit 40 controls the first switching sub-circuit 310 to conduct, causing the first output port 201a and the second output port 201b to be connected and operate alternately, so as to output electrical energy to an external circuit connected to either the first output port 201a or the second output port 201b. For example, when using a single output port and outputting at a low power level (e.g., 0-500W), the first switching sub-circuit 310 is turned on, and the corresponding DC-DC circuits of the first output port 201a and the second output port 201b will form a two-phase interleaved operating mode. At this time, the output power of the first output port 201a / second output port 201b increases. For example, if the output power of the first output port 201a is 50W and the output power of the second output port 201b is 50W, the output power can be increased to 100W when the first output port 201a and the second output port 201b work alternately; or if the output power of the first output port 201a is 40W and the output power of the second output port 201b is 60W, the output power can be increased to 100W when the first output port 201a and the second output port 201b work alternately.

[0034] Alternatively, the control circuit 40 controls the first switch sub-circuit 310 to disconnect, so that the first output port 201a and the second output port 201b can work independently to output electrical energy, that is, the corresponding DC-DC circuits of the first output port 201a and the second output port 201b enter independent working mode.

[0035] In some embodiments, such as Figure 3 As shown, Figure 3 This is a partial structural schematic diagram of a multi-port output charging circuit according to another embodiment of this application. At least two output ports 201 include a first output port 201a, a second output port 201b, and a third output port 201c. The switching circuit 30 includes a first switching sub-circuit 310, a second switching sub-circuit 320, and a third switching sub-circuit 330.

[0036] Specifically, the first switch sub-circuit 310 connects the first output port 201a and the second output port 201b, meaning the control circuit 40 can connect to the first output port 201a and the second output port 201b through the first switch sub-circuit 310. The second switch sub-circuit 320 connects the second output port 201b and the third output port 201c, meaning the control circuit 40 can connect to the second output port 201b and the third output port 201c through the second switch sub-circuit 320. The third switch sub-circuit 330 connects the first output port 201a and the third output port 201c, meaning the control circuit 40 can connect to the first output port 201a and the third output port 201c through the third switch sub-circuit 330.

[0037] Furthermore, in some embodiments, the control circuit 40 controls the first switch sub-circuit 310 to be turned on, and the second switch sub-circuit 320 and the third switch sub-circuit 330 to be turned off, so that the first output port 201a and the second output port 201b are connected and operate alternately to output electrical energy to an external circuit connected to either the first output port 201a or the second output port 201b. That is, the DC-DC circuits corresponding to the first output port 201a and the second output port 201b will form a two-phase interleaved operating mode. Alternatively, the control circuit 40 controls the second switch sub-circuit 320 to be turned on, and the first switch sub-circuit 310 and the third switch sub-circuit 330 to be turned off, so that the second output port 201b and the third output port 201c are connected and operate alternately to output electrical energy to an external circuit connected to either the second output port 201b or the third output port 201c. That is, the DC-DC circuits corresponding to the second output port 201b and the third output port 201c will form a two-phase interleaved operating mode. Alternatively, the control circuit 40 controls the third switch sub-circuit 330 to be turned on, and the first switch sub-circuit 310 and the second switch sub-circuit 320 to be turned off, so that the first output port 201a and the third output port 201c are connected and work alternately to output electrical energy to an external circuit connected to either the first output port 201a or the third output port 201c. That is, the DC-DC circuits corresponding to the first output port 201a and the third output port 201c will form a two-phase interleaved working mode.

[0038] In some examples, for instance, when using a single output port and outputting at high power (e.g., greater than 500W), the control circuit 40 controls the second switch sub-circuit 320 and the third switch sub-circuit 330 to be turned on, while the first switch sub-circuit 310 is turned off. This causes the first output port 201a to be connected to the third output port 201c, and the second output port 201b to be connected to the third output port 201c. Consequently, the first output port 201a, the second output port 201b, and the third output port 201c operate alternately to output power, i.e., to output power to an external circuit connected to any one of the output ports 201a, 201b, and 201c. For example, the output power of the first output port 201a is 50W, the output power of the second output port 201b is 50W, and the output power of the third output port 201c is 50W. The second switch sub-circuit 320 and the third switch sub-circuit 330 are turned on, and the first switch sub-circuit 310 is turned off. At this time, the corresponding DC-DC circuits of the first output port 201a, the second output port 201b, and the third output port 201c will form a 3-phase interleaved working mode, and the corresponding output port power can be increased to 3 times the initial value, that is, 150W.

[0039] Similarly, the control circuit 40 controls the first switch sub-circuit 310 and the third switch sub-circuit 330 to be turned on, and the second switch sub-circuit 320 to be turned off, so that the first output port 201a is turned on and connected to the second output port 201b, and the first output port 201a is turned on and connected to the third output port 201c. Then, the first output port 201a, the second output port 201b, and the third output port 201c work alternately, outputting electrical energy to an external circuit connected to any one of the first output port 201a, the second output port 201b, and the third output port 201c. That is, when the first switch sub-circuit 310 and the third switch sub-circuit 330 are turned on, the corresponding DC-DC circuits of the first output port 201a, the second output port 201b, and the third output port 201c can form a three-phase interleaved working mode. Alternatively, the control circuit 40 controls the first switch sub-circuit 310 and the second switch sub-circuit 320 to be turned on, and the third switch sub-circuit 330 to be turned off, so that the first output port 201a is connected to the second output port 201b, the second output port 201b is connected to the third output port 201c, and then the first output port 201a, the second output port 201b and the third output port 201c work alternately, outputting electrical energy to an external circuit connected to any one of the first output port 201a, the second output port 201b and the third output port 201c. That is, when the first switch sub-circuit 310 and the second switch sub-circuit 320 are turned on, the corresponding DC-DC circuits of the first output port 201a, the second output port 201b and the third output port 201c can form a three-phase interleaved working mode.

[0040] In this embodiment, the control circuit 40 controls the switching on and off of the first switch sub-circuit 310, the second switch sub-circuit 320, and the third switch sub-circuit 330, so that the first output port 201a, the second output port 201b, and the third output port 201c work alternately. This realizes the control of the alternating working mode of each DC-DC according to the output port requirements, reduces the size of the switching devices, magnetic cores, and capacitors in each output DC-DC conversion section, thereby saving costs and reducing the overall size of the charger.

[0041] In some embodiments, the control circuit 40 can also control the first switch sub-circuit 310, the second switch sub-circuit 320, and the third switch sub-circuit 330 to disconnect, so that the first output port 201a, the second output port 201b, and the third output port 201c output independently. For example, when all port outputs are in use, the first switch sub-circuit 310, the second switch sub-circuit 320, and the third switch sub-circuit 330 are all disconnected. At this time, the corresponding DC-DC circuits of the first output port 201a, the second output port 201b, and the third output port 201c enter an independent working mode. In some embodiments, the output circuit 20 includes n output ports 201, where n is a positive integer greater than or equal to 2, and the switch circuit 30 includes m switch sub-circuits, where m = n*(n-1) / 2. Each switch sub-circuit is directly electrically connected to two output ports.

[0042] For example, when n=4 and m=6, the output ports include port 201a, port 201b, port 201c, and port 201d. The switch sub-circuit includes sub-circuit 310, sub-circuit 320, sub-circuit 330, sub-circuit 340, sub-circuit 350, and sub-circuit 360. Sub-circuit 310 can be electrically connected to port 201a and port 201b, sub-circuit 320 can be electrically connected to port 201b and port 201c, sub-circuit 330 can be electrically connected to port 201c and port 201d, sub-circuit 340 can be electrically connected to port 201a and port 201c, sub-circuit 350 can be electrically connected to port 201a and port 201d, and sub-circuit 360 can be electrically connected to port 201b and port 201d. Understandably, n≥2 and n is a positive integer, and the value of m can be calculated based on n so that each switch sub-circuit is directly electrically connected to the two output ports 201, thereby controlling the electrical connection of the two output ports 201 through one switch sub-circuit, so that the output circuits 210 corresponding to at least two output ports 201 can work alternately.

[0043] In some embodiments, the switching circuit includes diodes and transistors. The switching sub-circuit will be described using the first switching sub-circuit 310, the second switching sub-circuit 320, and the third switching sub-circuit 330 as examples. Figure 4 As shown, Figure 4This is a schematic diagram of a switching sub-circuit according to an embodiment of this application. The first switching sub-circuit 310 includes a first diode D1 and a first transistor M1, wherein the drain of the first transistor M1 is connected to the cathode of the first diode D1 and the first output port 201a, the source of the first transistor M1 is connected to the anode of the first diode D1 and the second output port 201b, and the gate of the first transistor M1 is connected to the control circuit 40. The second switching sub-circuit 320 includes a second diode D2 and a second transistor M2, wherein the drain of the second transistor M2 is connected to the cathode of the second diode D2 and the second output port 201b, the source of the second transistor M2 is connected to the anode of the second diode D2 and the third output port 201c, and the gate of the second transistor M2 is connected to the control circuit 40. The third switch sub-circuit 330 includes a third diode D3 and a third transistor M3, wherein the drain of the third transistor M3 is connected to the negative terminal of the third diode D3 and the first output port 201a, the source of the third transistor M3 is connected to the positive terminal of the third diode D3 and the third output port 201c, and the gate of the third transistor M3 is connected to the control circuit 40.

[0044] In some embodiments, such as Figure 5 As shown, Figure 5 This is a schematic diagram of a multi-port output charging circuit according to an embodiment of this application. The control circuit 40 is also connected to at least two sub-output circuits 210 respectively, and controls the at least two sub-output circuits 210 to receive AC signals / DC signals from the power supply circuit 10.

[0045] Alternatively, in some embodiments, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of a multi-port output charging circuit according to another embodiment of this application. The multi-port output charging circuit 100 may also include an auxiliary control circuit 50, which is connected to at least two sub-output circuits 210 respectively, and controls the at least two sub-output circuits 210 to receive AC signals / DC signals from the power supply circuit 10.

[0046] In some embodiments, such as Figure 7 As shown, Figure 7 This is a partial structural schematic diagram of a multi-port output charging circuit according to another embodiment of this application. The sub-output circuit 210 includes a switch component Q and an output component P. The auxiliary control circuit 50 controls the sub-output circuit 210 to receive AC / DC signals from the power supply circuit 10 by controlling the on / off state of the switch component Q. Here, the auxiliary control circuit 50 can also be a control circuit 40.

[0047] The switching component Q includes a fourth diode D4 and a fourth transistor M4. The drain of the fourth transistor M4 is connected to the negative terminal of the fourth diode D4 and the power supply circuit 10. The source of the fourth transistor M4 is connected to the positive terminal of the fourth diode D4 and the output component P. The gate of the fourth transistor M4 is connected to the auxiliary control circuit 50.

[0048] The output component P includes a fifth diode D5, an inductor L, and a capacitor C. The positive terminal of the fifth diode D5 is connected to the negative terminal of the capacitor C, and the negative terminal of the fifth diode D5 is connected to one end of the inductor L. The output port 201 is located between the other end of the inductor L and the positive terminal of the capacitor C.

[0049] To facilitate understanding, we will use a multi-port output charging circuit, including 3 output ports and 3 switching sub-circuits, as an example for illustration. Figure 8 As shown, Figure 8 This is a schematic diagram of a multi-port output charging circuit according to another embodiment of this application. Figure 8 In the multi-port output charging circuit 100, there are a first output port 201a, a second output port 201b and a third output port 201c, as well as a corresponding first switch sub-circuit Q6, a second switch sub-circuit Q7 and a third switch sub-circuit Q8, etc.

[0050] For example, when using a single output port and outputting at low power (e.g., 0-500W), the first switch sub-circuit Q6 is turned on, while the second switch sub-circuit Q7 and the third switch sub-circuit Q8 are turned off. The corresponding DC-DC circuits of the first output port 201a and the second output port 201b will form a 2-phase interleaved operating mode, increasing the power of the first output port 201a / second output port 201b. Alternatively, when using a single output port and outputting at high power (e.g., greater than 500W), the first switch sub-circuit Q6 is turned off, while the second switch sub-circuit Q7 and the third switch sub-circuit Q8 are turned on. In this case, the corresponding DC-DC circuits of the first output port 201a, the second output port 201b, and the third output port 201c will form a 3-phase interleaved operating mode, increasing the power of the corresponding output ports. In other words, by controlling the on / off state of the first switch sub-circuit Q6, the second switch sub-circuit Q7, and the third switch sub-circuit Q8, the output circuits corresponding to the first output port 201a, the second output port 201b, and the third output port 201c can be operated alternately.

[0051] like Figure 8 As shown, the multi-port output charging circuit 100 includes a power supply circuit 10, wherein the circuit 10 includes capacitors C4, C5, C6, and C7, switches Q4 and Q5, inductors L4 and L5, a control circuit (e.g., the aforementioned control circuit 40 / auxiliary control circuit 50), a synchronous rectifier chip, etc., so that the power supply circuit 10 generates an AC signal / DC signal.

[0052] Please see Figure 9 , Figure 9 This is a schematic diagram of the charger structure according to an embodiment of this application. The charger 200 includes a multi-port output charging circuit 100, enabling the charger 200 to achieve multi-port output while maintaining a small size. The charger 200 also includes at least one physical port 2100. The multi-port output charging circuit 100 can be connected to one physical port 2100, meaning that multiple output ports 201 of the multi-port output charging circuit 100 can be connected to one physical port 2100, achieving power output through one physical port 2100. Alternatively, the multi-port output charging circuit 100 can be connected to multiple physical ports 2100, meaning that multiple output ports 201 of the multi-port output charging circuit 100 are respectively connected to corresponding physical ports 2100, with the number of output ports 201 and physical ports 2100 being the same, thereby achieving power output through multiple physical ports 2100.

[0053] Those skilled in the art will understand that, in the above-described method of the specific implementation, the order in which each step is written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0054] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0055] In the several embodiments provided in this application, it should be understood that the disclosed methods and related devices can be implemented in other ways. For example, the related device implementations described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication disconnection shown or discussed may be indirect coupling or communication disconnection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0056] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0057] Those skilled in the art will readily recognize that numerous modifications and variations can be made to the apparatus and method while maintaining the teachings of this application. Therefore, the above disclosure should be considered limited only by the scope of the appended claims.

Claims

1. A multi-output charging circuit suitable for use in a charger, characterized by, The circuit comprises: a power supply circuit; an output circuit comprising at least two output ports; a switch circuit connecting the at least two output ports; a control circuit connected to the switch circuit for controlling the on-off of the switch circuit; wherein the power supply circuit is connected to the output circuit, the switch circuit and the control circuit in sequence; the switch circuit controls the electrical connection of the at least two output ports, when the switch circuit controls the on connection between the at least two output ports, the at least two output ports work alternately and output electric energy alternately; when the switch circuit controls the off connection between the output ports, each of the at least two output ports can work independently and output electric energy independently.

2. The circuit of claim 1, wherein, The output circuit comprises a first output port, a second output port and a third output port, and the switch circuit comprises a first switch sub-circuit, a second switch sub-circuit and a third switch sub-circuit; the first switch sub-circuit connects the first output port and the second output port, the second switch sub-circuit connects the second output port and the third output port, and the third switch sub-circuit connects the first output port and the third output port.

3. The circuit of claim 2, wherein: the control circuit controls the first switch sub-circuit to be on, and the second switch sub-circuit and the third switch sub-circuit to be off, so that the first output port and the second output port are connected and work alternately, and output electric energy to an external circuit; the control circuit controls the second switch sub-circuit to be on, and the first switch sub-circuit and the third switch sub-circuit to be off, so that the second output port and the third output port are connected and work alternately, and output electric energy to an external circuit; the control circuit controls the third switch sub-circuit to be on, and the first switch sub-circuit and the second switch sub-circuit to be off, so that the first output port and the third output port are connected and work alternately, and output electric energy to an external circuit.

4. The circuit of claim 2, wherein: the control circuit controls the second switch sub-circuit and the third switch sub-circuit to be on, and the first switch sub-circuit to be off, so that the first output port is connected to the third output port, the third output port is connected to the second output port, and the first output port, the second output port and the third output port work alternately; the control circuit controls the first switch sub-circuit and the third switch sub-circuit to be on, and the second switch sub-circuit to be off, so that the first output port is connected to the second output port, the first output port is connected to the third output port, and the first output port, the second output port and the third output port work alternately; The control circuit controls the first switch sub-circuit and the second switch sub-circuit to be turned on, and the third switch sub-circuit to be turned off, so that the first output port is connected to the second output port, the second output port is connected to the third output port, and the first output port, the second output port and the third output port work alternately.

5. The circuit of claim 2, wherein, The control circuit controls the first switch sub-circuit, the second switch sub-circuit and the third switch sub-circuit to be turned off, and the first output port, the second output port and the third output port to work independently.

6. The circuit of claim 2, wherein, The first switch sub-circuit comprises a first diode and a first transistor; The drain of the first transistor is connected to the negative electrode of the first diode and the first output port, the source of the first transistor is connected to the positive electrode of the first diode and the second output port, and the gate of the first transistor is connected to the control circuit; The second switch sub-circuit comprises a second diode and a second transistor; The drain of the second transistor is connected to the negative electrode of the second diode and the second output port, the source of the second transistor is connected to the positive electrode of the second diode and the third output port, and the gate of the second transistor is connected to the control circuit; The third switch sub-circuit comprises a third diode and a third transistor; The drain of the third transistor is connected to the negative electrode of the third diode and the first output port, the source of the third transistor is connected to the positive electrode of the third diode and the first output port, and the gate of the third transistor is connected to the control circuit.

7. The circuit of claim 1, wherein, The output circuit comprises n output ports, n is a positive integer greater than or equal to 2, and the switch circuit comprises m switch sub-circuits, m = n*(n-1) / 2, and each switch sub-circuit is directly connected to two output ports.

8. The circuit of claim 1, wherein The output circuit comprises at least two sub-output circuits, and the number of the sub-output circuits is the same as the number of the output ports and the sub-output circuits are connected one by one; The control circuit is further connected to the at least two sub-output circuits respectively, and controls the at least two sub-output circuits to receive the AC / DC signal from the power supply circuit; or The multi-port output charging circuit further comprises an auxiliary control circuit connected to the at least two sub-output circuits respectively, and controls the at least two sub-output circuits to receive the AC / DC signal from the power supply circuit.

9. The circuit of claim 8, wherein, The sub-output circuit comprises a switch assembly and an output assembly, wherein: The switch assembly comprises a fourth diode and a fourth transistor; The drain of the fourth transistor is connected to the negative electrode of the fourth diode and the power supply circuit, the source of the fourth transistor is connected to the positive electrode of the fourth diode and the output assembly, and the gate of the fourth transistor is connected to the control circuit or the auxiliary control circuit; The output assembly comprises a fifth diode, an inductor and a capacitor; The positive electrode of the fifth diode is connected to the negative electrode of the capacitor, the negative electrode of the fifth diode is connected to one end of the inductor, and the output port is located between the other end of the inductor and the positive electrode of the capacitor.

10. A charger characterized by comprising: The multi-output charging circuit as claimed in any one of claims 1-9, and at least one physical port connected to the multi-output charging circuit.

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