Multi-port output control circuit, power supply circuit, and charging device

Abstract

A multi-port output control circuit, a power supply circuit, and a charging device that are more convenient for users to use are provided. The multi-port output control circuit includes N (N≧2) output control modules, M (1≦M

Description

Technical Field

[0001] This application relates to the field of charging devices, and specifically to a multi-port output control circuit, a power supply circuit, and a charging device.

Background Art

[0002] Currently, the number of smart devices that need to be charged in daily life is increasing. In addition to smart devices such as smartphones, handheld computers, and tablet computers, power tools, cordless vacuum cleaners, in-vehicle vacuum cleaners, etc. that support mainstream fast charging protocols all require fast charging. Therefore, a multi-port charging device has been developed based on the technology of conventional single-port charging equipment.

[0003] In related technologies, in order to rapidly charge an external device using a multi-port charging device, it is often necessary to connect to the corresponding fast charging port. However, due to the large number of ports on the multi-port charging device, it is difficult for users to find the corresponding fast charging port to charge the external device, which causes inconvenience to the users.

Summary of the Invention

[0004] Embodiments of this application provide a multi-port output control circuit, a power supply circuit, and a charging device. When the number of external devices that require charging by the user is at most the same as the number of transformer modules, there is no need to find the corresponding output port based on the user manual or label. When an external device is connected to any output port, the charging device can rapidly charge the external device, thereby improving the usability for the user.

[0005] The multi-port output control circuit according to the embodiment of the present application is applied to a power supply circuit and includes N (N≥2) output control modules, M (1≤M<N) transformer modules, and a controller. Each output control module includes an output port for connecting to an external device. Each transformer module is connected to at least two output control modules. The controller is connected to each output control module to control the on / off of the output control module. When at most M output ports are connected to an external device, the controller controls the output control module corresponding to the output port connected to the external device to be turned on, so that the transformer module can supply power to the external device in a fast charging mode through the output control module.

[0006] According to the above embodiment, when at most M external devices are simultaneously connected to M output ports, the charging device can rapidly charge each external device and improve the charging efficiency of each external device. When the number of external devices that require charging by the user is at most M, based on the user manual or label, there is no need to find the corresponding output port. When an external device is connected to any output port, the charging device can rapidly charge the external device, thereby improving the user convenience.

[0007] The power supply circuit according to the embodiment of the present application includes a rectification module, a multi-port output control circuit, and a protocol chip. The rectification module has an AC input terminal and a DC output terminal. The AC input terminal is connected to a commercial power supply, and the input terminal of the transformer module is connected to the DC output terminal of the rectification module. The protocol chip is connected to the transformer module and the output port.

[0008] The charging device according to the embodiment of the present application includes a housing, a circuit board, and a power supply circuit. The housing has a commercial power supply port. The circuit board is provided in the housing. The power supply circuit is provided on the circuit board. The AC input terminal of the rectification module is connected to the commercial power supply port, and the output port is provided on the housing and exposed. <​According to the multi-port output control circuit of the present invention, when at least M output ports are connected to external equipment, the controller controls the output control module corresponding to the output port connected to the external equipment to turn on, thereby enabling the transformer module to supply power to the external equipment in rapid charging mode via the output control module. As a result, when at least M external equipment is simultaneously connected to M output ports, the charging device can rapidly charge each external piece of equipment, improving the charging efficiency of each piece of equipment. Furthermore, when the number of external pieces of equipment that the user needs to charge is at most M, the user does not need to find the corresponding output port based on the instruction manual or label; the external equipment can be rapidly charged by the charging device simply by connecting it to any output port, thereby improving user convenience.

[0010] To more clearly describe the embodiments of the present application or the technical means in the prior art, the drawings necessary for describing the embodiments or the prior art will be briefly described below. However, it is clear that the drawings in the following description are only a few embodiments of the present application, and a person skilled in the art can obtain other drawings based on these drawings without any creative work. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic diagram of a charging device in one embodiment of the present invention. [Figure 2] This is a block diagram showing the structure of a power supply circuit in one embodiment of the present invention. [Figure 3] This is a schematic diagram of a multiport output control circuit in one embodiment of the present invention. [Figure 4] This is a schematic diagram of a multiport output control circuit in another embodiment of the present invention. [Modes for carrying out the invention]

[0012] To further clarify the purpose, technical means, and advantages of this application, the application will be described in more detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are merely interpretive and not limiting.

[0013] As shown in Figure 1, an embodiment of the present invention provides a charging device 1 including a housing 11, a circuit board 12, and a power supply circuit 2.

[0014] The housing 11 can support and protect the electronic components located within it. The material of the housing 11 may be plastic or metal. Specifically, the material of the housing 11 may be plastic to insulate it and reduce the risk of electric shock to the user. Since plastic is lightweight, the housing 11 is also lightweight, making the entire charging device 1 lightweight and easy for the user to carry and use. Specifically, the housing 11 can be integrally injection molded to increase its structural strength, thereby making the housing 11 less prone to breakage, protecting other components within the housing 11, reducing the probability of other components breaking, and extending the service life of the charging device 1.

[0015] The housing 11 further has a commercial power port (not shown) which is connected to a commercial power supply.

[0016] Since the power supply circuit 2 can be formed onto the circuit board 12 by an etching process, the manufacturing efficiency of the power supply circuit 2 can be improved, and furthermore, the manufacturing cost of the power supply circuit 2 can be reduced.

[0017] To ensure clarity, the charging device 1 may be a mobile battery and charger, and this application does not limit the specific form of the charging device 1.

[0018] As shown in Figure 2, the power supply circuit 2 may include a rectifier module 21, a multi-port output control circuit 3, and a protocol chip 22.

[0019] The rectifier module 21 has an AC input terminal and a DC output terminal. The AC input terminal of the rectifier module 21 may be connected to a commercial power port of the housing 11, and the DC output terminal of the rectifier module 21 is connected to the multi-port output control circuit 3.

[0020] Exemplary, the rectifier module 21 may include a rectifier circuit (not shown), a filter circuit (not shown), and a voltage stabilization circuit (not shown), the rectifier circuit rectifying an alternating current to a direct current, and the rectifier circuit includes, but is not limited to, a bridge rectifier circuit and a PWM (pulse width modulation) rectifier circuit. The filter circuit filters the pulsating DC current output from the rectifier circuit to smooth the waveform of the output DC current. The voltage stabilization circuit maintains a constant output voltage. The embodiments of this application do not limit the specific form of the rectifier module 21.

[0021] As shown in Figure 2, in one embodiment of the present invention, the multi-port output control circuit 3 includes an output control module 31, a transformer module 32, and a controller 33. The output control module 31 includes an output port 31A, which is used to connect to external equipment, is connected to the housing 11, and is exposed from the housing 11 to connect to the external equipment. The charging device 1 is connected to a commercial power supply and can supply power to external equipment via the output port 31A, which includes, but is not limited to, mobile phones, tablet computers, and smartwatches, and the output port 31A includes at least one of a USB-A port, a Micro USB port, a USB Type-C port, or a Lightning port.

[0022] The transformer module 32 boosts or buck-boosts the DC current output from the rectifier module 21, and then supplies power to the output control module 31 so that the output port 31A outputs the corresponding voltage. Specifically, the protocol chip 22 may be connected to the output port 31A and the transformer module 32. After the external device is connected to the corresponding output port 31A, the protocol chip 22 exchanges information including the remaining power of the external device and the rated charging power of the external device with the external device via the output port 31A. Then, the protocol chip 22 outputs the power parameter information corresponding to the external device to the transformer module 32, so that the transformer module 32 can output the charging power required by the external device, whereby the output power of the power supply circuit 2 can be matched with the external device. In other embodiments, the above process may be referred to as handshake communication between the charging device 1 and the external device.

[0023] Exemplarily, the fast charging protocols supported by the protocol chip 22 include at least one of the USB PD (Power Delivery) fast charging protocol, QC (Quick Charge) fast charging protocol, FCP (Fast Charge Protocol) protocol, SCP (Super Charge Protocol) protocol, and Mi Turbo Charge protocol. In other embodiments, the fast charging protocols supported by the protocol chip 22 may include other types and may be appropriately selected according to the application range of the product. The fast charging mode according to the present application is a charging mode in which the output port 31A matches the fast charging protocol.

[0024] As can be understood, in order to adapt to the above fast charging protocol and market needs, the output port 31A in the present application is taken as an example to be USB Type-C.

[0025] The controller 33 is connected to the output control module 31 and controls the output control module 31 to be turned on, so that the transformer module 32 can supply power to external equipment through the turned-on output control module 31.

[0026] In an embodiment of the present application, the multi-port output control circuit 3 may include N (N≥2) output control modules 31 and M (1≤M<N) transformer modules 32. Each output control module 31 includes an output port 31A. Each transformer module 32 is connected to at least two output control modules 31, and the controller 33 is connected to all of the N output control modules 31.

[0027] When at most M output ports 31A are connected to external equipment, the controller 33 controls the corresponding output control module 31 to be turned on, so that the transformer module 32 can supply power to the external equipment in a fast charging mode through the output control module 31. Thereby, when at most M external equipment are simultaneously connected to the M output ports 31A, the charging device 1 can fast charge each external equipment and improve the charging efficiency of each external equipment. And when the number of external equipment that requires charging by the user is at most M, the user does not need to find the corresponding output port 31A based on the user manual or label. When the external equipment is connected to any output port 31A, the charging device 1 can fast charge the external equipment, thereby improving the user's convenience of use.

[0028] And because M<N, the number of transformer modules 32 is less than the number of output control modules 31. The transformer modules 32 of the charging device 1 are fewer, and the space occupied by the transformer modules 32 in the housing 11 is small. Thereby, the overall volume of the charging device 1 is small, and it is easier to carry and use the charging device 1. And because the number of transformer modules 32 is small, the overall cost of the charging device 1 is reduced. <000**********4><000**********5>As shown in Figures 2 and 3, in a specific embodiment, each output control module 31 further includes a control subcircuit 311, which is connected to the output port 31A, the transformer module 32, and the controller 33. When the charging device 1 detects that the corresponding output port 31A is connected to external equipment, the controller 33 controls the predetermined control subcircuit 311 to turn on, thereby causing the transformer module 32 to supply power to the output port 31A via the control subcircuit 311 so that the output port 31A can supply power to the external equipment.

[0030] To make it easier to understand, the number of control subcircuits 311 in the output control module 31 may be one, two, three, etc., and each control subcircuit 311 may be connected to a different transformer module 32. Thus, each output port 31A can correspond to at least one transformer module 32, and if at least one transformer module 32 is not supplying power to the outside, the controller 33 controls the control subcircuit 311 corresponding to that transformer module 32 to turn on, so that the transformer module 32 can supply power to the output port 31A via the control subcircuit 311 to rapidly charge external equipment. This increases the probability that the output port 31A can rapidly charge external equipment, improving the user's charging experience and the charging efficiency of the external equipment.

[0031] In one embodiment, when N=2 and M=1, the multi-port output control circuit 3 may include two output control modules 31 and one transformer module 32, each output control module 31 may include one control subcircuit 311, both of which are connected to the transformer module 32, and when one output port 31A is connected to external equipment, the controller 33 controls the control subcircuit 311 corresponding to the output port 31A connected to the external equipment to turn on, thereby enabling the transformer module 32 to supply power to the external equipment in rapid charging mode via the output control module 31.

[0032] As shown in Figures 2 and 3, in another embodiment, when N=4 and M=2, the multi-port output control circuit 3 may include four output control modules 31 and two transformer modules 32, each output control module 31 including two control subcircuits 311, both of which are connected to the output port 31A and the controller 33, and each is also connected to the two transformer modules 32.

[0033] Specifically, any two of the four output ports 31A are designated as the first output port and the second output port, and when the first output port is connected to external equipment, the controller 33 controls the output control module 31 corresponding to the first output port to turn on, so that one of the transformer modules 32 supplies power to the first output port via the output control module 31 so that the first output port can supply power to the external equipment in rapid charging mode.

[0034] When the second output port is connected to external equipment, the controller 33 controls the output control module 31 corresponding to the second output port to turn on, so that the other transformer module 32 can supply power to the second output port via the output control module 31 so that the second output port can supply power to the external equipment in rapid charging mode. When at most two output ports 31A are connected to external equipment, the controller 33 controls the output control module 31 corresponding to the output port 31A connected to the external equipment to turn on, so that the transformer module 32 can supply power to the external equipment in rapid charging mode via the output control module 31.

[0035] As shown in Figures 2 and 4, in another embodiment, when N=4 and M=3, the multiport output control circuit 3 may include four output control modules 31 and three transformer modules 32, where the four output control modules 31 are a first output control module, a second output control module, a third output control module, and a fourth output control module (as shown in Figure 4, from top to bottom, the first output control module, the second output control module, the third output control module, and the fourth output control module, respectively), where the first and fourth output control modules each have one control subcircuit 311, and the second and third output control modules each have two control subcircuits 31 The system has three transformer modules 32, each consisting of a first transformer module, a second transformer module, and a third transformer module (as shown in Figure 4, from top to bottom, the first transformer module, the second transformer module, and the third transformer module, respectively). The first transformer module is connected to the control subcircuit 311 of the first output control module and one of the control subcircuits 311 of the second output control module. The second transformer module is connected to the other control subcircuit 311 of the second output control module and one of the control subcircuits 311 of the third output control module. The third transformer module is connected to the other control subcircuit 311 of the third output control module and the control subcircuit 311 of the fourth output control module.

[0036] As shown in Figures 2 and 4, exemplary, three ports are selected from the four output ports 31A from top to bottom, designated as the first output port, second output port, and third output port, respectively. When the first output port is connected to external equipment, the controller 33 controls the output control module 31 corresponding to the first output port to turn on, thereby allowing the first transformer module to supply power to the first output port via the output control module 31 so that the first output port can supply power to the external equipment in rapid charging mode.

[0037] When the second output port is connected to external equipment, the controller 33 controls the output control module 31 corresponding to the second output port to turn on, thereby enabling the second transformer module to supply power to the second output port via the output control module 31 so that the second output port can supply power to the external equipment in rapid charging mode.

[0038] When the third output port is connected to external equipment, the controller 33 controls the output control module 31 corresponding to the third output port to turn on, thereby enabling the third transformer module to supply power to the third output port via the output control module 31 so that the third output port can supply power to the external equipment in rapid charging mode.

[0039] By analogy, when at most three output ports 31A are connected to external equipment, the controller 33 controls the output control module 31 corresponding to the output port 31A connected to the external equipment to turn on, thereby enabling the transformer module 32 to supply power to the external equipment in rapid charging mode via the output control module 31.

[0040] To make it clear, in other embodiments, each transformer module 32 can be connected simultaneously with three or four output control modules 31, and different connection methods can be adapted by changing the control logic of the controller 33, and the embodiments of the present application do not specifically limit this.

[0041] As shown in Figures 2 to 4, in a specific embodiment, the control subcircuit 311 includes a first switch circuit 3111 and a second switch circuit 3112. The first switch circuit 3111 has its input terminal connected to the transformer module 32 and its output terminal connected to the input terminal of the output port 31A. The second switch circuit 3112 has its input terminal connected to the controlled terminal of the first switch circuit 3111, its output terminal connected to the ground terminal of the output port 31A, and its controlled terminal connected to the controller 33.

[0042] When the controller 33 detects that output port 31A is connected to external equipment, it sends an ON signal to the second switch circuit 3112 of the output control module 31 corresponding to output port 31A connected to the external equipment, thereby turning on the second switch circuit 3112 and the first switch circuit 3111, so that the transformer module 32 can supply power to output port 31A via the first switch circuit 3111 so that output port 31A can supply power to the external equipment in rapid charging mode.

[0043] As shown in Figures 2 to 4, in one embodiment, the first switch circuit 3111 includes a first switch element Q1, a second switch element Q2, a first resistor R1, a first diode D1, and a second diode D2, wherein the input terminal of the first switch element Q1 is connected to the input terminal of the first switch circuit 3111, the input terminal of the second switch element Q2 is connected to the output terminal of the first switch element Q1, and the output terminal of the second switch element Q2 is connected to the output terminal of the first switch circuit 3111, and the controlled terminal is the first switch The first resistor R1 is connected to the controlled terminal of the switch element Q1 and also to the controlled terminal of the first switch circuit 3111. The first diode D1 has its positive terminal connected to the input terminal of the first switch element Q1 and its negative terminal connected to the output terminal of the first switch element Q1. The second diode D2 has its positive terminal connected to the output terminal of the second switch element Q2 and its negative terminal connected to the input terminal of the second switch element Q2.

[0044] After the controller 33 controls the second switch circuit 3112 to turn on, the transformer module 32 and the ground terminal of the output port 31A are connected via the first diode D1, the first resistor R1, and the second switch circuit 3112, respectively. A voltage drop occurs across the first resistor R1, turning on the first switch element Q1 and the second switch element Q2. As a result, the output voltage of the transformer module 32 is supplied to the output port 31A via the first switch element Q1 and the second switch element Q2, so that the output port 31A can supply power to external equipment.

[0045] Furthermore, by providing the second diode D2, when the corresponding transformer module 32 supplies power to the other output port 31A, it is possible to prevent this output port 31A from becoming charged, thereby reducing the probability of electric shock to the user and ensuring user safety. This also reduces power loss in the transformer module 32, improves the utilization rate of electrical energy, and ensures that the other output port 31A can supply power to external equipment in rapid charging mode.

[0046] To ensure clarity, the first switching element Q1 and the second switching element Q2 may each include at least one of the following: a transistor (Bipolar Junction Transistor, BJT), a field-effect transistor (Metal-Oxide-Semiconductor, MOS), and an electromagnetic relay. The embodiments of this application do not limit the specific forms of the first switching element Q1 and the second switching element Q2.

[0047] For example, the first switching element Q1 and the second switching element Q2 may both be field-effect transistors, the first diode D1 may be a parasitic diode of the first switching element Q1, and the second diode D2 may be a parasitic diode of the second switching element Q2.

[0048] As shown in Figures 2 to 4, specifically, the first switching element Q1 includes a first PMOS transistor (P-Metal-Oxide-Semiconductor) and a first parasitic diode, the drain of the first PMOS transistor is connected to the input terminal of the first switching circuit 3111, the positive terminal of the first parasitic diode is connected to the drain of the first PMOS transistor and the negative terminal is connected to the source of the first PMOS transistor, and the second switching element Q2 includes a second PMOS transistor and a second parasitic diode The circuit includes an diode, the source of the second PMOS transistor is connected to the drain of the first PMOS transistor, the drain of the second PMOS transistor is connected to the output terminal of the first switch circuit 3111, the gate of the second PMOS transistor is connected to the gate of the first PMOS transistor, the positive terminal of the second parasitic diode is connected to the drain of the second PMOS transistor, the negative terminal of the second parasitic diode is connected to the source of the second PMOS transistor, and the first resistor R1 is connected to the source and gate of the first PMOS transistor.

[0049] After the controller 33 controls the second switch circuit 3112 to turn on, the transformer module 32 and the output port 31A are connected via the first parasitic diode, the first resistor R1, and the second switch circuit 3112, respectively. This causes a voltage drop across the first resistor R1, resulting in the source voltage of the first PMOS transistor being higher than the gate voltage, the source voltage of the second PMOS transistor being higher than the gate voltage, the source and drain of the first PMOS transistor being connected, and the source and drain of the second PMOS transistor being connected. This turns on the first switch circuit 3111, and the transformer module 32 can then supply power to the output port 31A via the first and second PMOS transistors.

[0050] To make it easier to understand, the first switching element Q1 may further include an NMOS transistor (N-Metal-Oxide-Semiconductor), and the second switching element Q2 may further include an NMOS transistor, but the explanation is omitted here.

[0051] As shown in Figures 2 to 4, in one embodiment, the second switch circuit 3112 includes a third switch element Q3 and a second resistor R2, wherein the input terminal of the third switch element Q3 is connected to the input terminal of the second switch circuit 3112, the output terminal is connected to the output terminal of the second switch circuit 3112, and the controlled terminal is connected to the controlled terminal of the second switch circuit 3112, and the second resistor R2 is connected to the output terminal and the controlled terminal of the third switch element Q3.

[0052] When the controller 33 detects that output port 31A is connected to external equipment, it sends an ON signal to the second switch circuit 3112 of the output control module 31 corresponding to output port 31A connected to the external equipment. This creates a voltage difference across the second resistor R2, turning on the third switch element Q3. Furthermore, the gates of the first and second PMOS transistors are connected to the ground terminal of output port 31A via the third switch element Q3. As a result, a voltage drop occurs across the first resistor R1, turning on the first and second PMOS transistors. The output voltage of the transformer module 32 is then supplied to output port 31A via the first and second PMOS transistors, enabling output port 31A to supply power to the external equipment.

[0053] To ensure clarity, the third switching element Q3 may include at least one of a transistor, a field-effect transistor, and an electromagnetic relay, and the embodiments of this application do not limit the specific form of the third switching element Q3.

[0054] For example, the third switching element Q3 may be a field-effect transistor, and specifically, the first switching element Q1 may be an NMOS transistor, where the drain of the NMOS transistor is the input terminal of the third switching element Q3, the source of the NMOS transistor is the output terminal of the third switching element Q3, and the gate of the NMOS transistor is the controlled terminal of the third switching element Q3. When the controller 33 transmits an ON signal to the second switching circuit 3112, the ON signal causes a voltage drop across the second resistor R2, the gate voltage of the NMOS transistor becomes greater than the source voltage, the source and drain of the NMOS transistor are connected, and the gates of the first PMOS transistor and the second PMOS transistor are connected to the ground terminal of the output port 31A via the NMOS transistor, thereby turning on the first switching circuit 3111, and furthermore, the transformer module 32 can supply power to the output port 31A via the first PMOS transistor and the second PMOS transistor.

[0055] To make it easier to understand, the third switching element Q3 may also be a PMOS transistor, and we will omit the explanation here.

[0056] As shown in Figures 2 to 4, the control subcircuit 311 further includes a third resistor R3, which is connected to the controlled terminal of the first switch circuit 3111 and the input terminal of the second switch circuit 3112. Since the resistance value of the third resistor R3 is several hundred kilohms, the resistance of the circuit from the transformer module 32 through the first parasitic diode, the third resistor R3, and the third switch element Q3 to the ground terminal of the output port 31A is much greater than the resistance of the circuit from the transformer module 32 through the first switch circuit 3111 to the output terminal of the output port 31A. As a result, the current in the circuit from the transformer module 32 through the first parasitic diode, the third resistor R3, and the third switch element Q3 to the ground terminal of the output port 31A is reduced, the electrical energy loss in the circuit is reduced, the overall electrical energy loss of the control subcircuit 311 is reduced, and furthermore, the electrical energy utilization rate of the multi-port output control circuit 3 is increased, and the electrical energy utilization rate of the charging device 1 is increased.

[0057] To make it easier to understand, if the number of external devices connected to the charging device 1 is greater than the number of transformer modules 32, the charging device 1 can obtain the charging power and remaining power of each external device through handshake communication and rationally distribute the output power of each output port 31A.

[0058] For example, when the same transformer module 32 is connected to two external devices, the charging device 1 obtains the rated charging power and remaining power of the two external devices through handshake communication, and controls the output power of the output port 31A connected to the external device with the higher power to decrease, while controlling the output power of the output port 31A connected to the external device with the lower power to increase. In this way, the charging device 1 can improve the charging efficiency when charging the external device with the lower power, thereby improving the charging efficiency when charging the external devices and improving the utilization rate of electrical energy of the charging device 1.

[0059] For example, when the same transformer module 32 is connected to two external devices, the charging device 1 can obtain the rated charging power and remaining power of the two external devices through handshake communication. If the charging device 1 detects that one external device is disconnected from the output port 31A, it can control the transformer module 32 to supply power to the other external device in rapid charging mode, thereby improving the charging efficiency of the charging device 1 when charging the other external device.

[0060] To ensure clarity, the power distribution method of the charging device 1 when the same transformer module 32 supplies power to at least two external devices may be of other form, and this embodiment of the present application does not specifically limit it.

[0061] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, the orientation or positional relationship represented by terms such as "upper", "lower", "left", and "right" is the orientation or positional relationship based on the illustration, and is only for explaining this application and simplifying the description, and does not indicate or imply that the device or element mentioned must have a specific orientation and be configured and operated in a specific orientation. It should be understood that the terms for explaining the positional relationship in the drawings are only used for exemplary explanation and should not be understood as limiting this patent. A person skilled in the art can understand the specific meaning of the above terms according to the specific situation.

[0062] The above are only preferred embodiments of this application and do not limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application should all be included within the protection scope of this application.

[0063] [Appended Claim 1] (Applied to a power supply circuit), including N (N≥2) output control modules each including an output port for connecting to an external device, M (1≤M<N) transformer modules each connected to at least two of the output control modules, and a controller connected to each of the output control modules to control the on / off of the output control module. When at most M external devices are simultaneously connected to the output port, the transformer module can supply power to the external device in a fast charging mode by the output control module. A multi-port output control circuit characterized by this. [Appended Claim 2] [Appended Claim 2] Each of the output control modules further includes a control sub-circuit connected to the output port, the transformer module, and the controller. The multi-port output control circuit according to Appended Claim 1, characterized by this. [Appended Claim 3] When N=4 and M=2, each output control module includes two control subcircuits, both of which are connected to the output port and the controller, and each is also connected to two transformer modules. The multi-port output control circuit according to Appendix 2, characterized in that when at most two of the output ports are connected to the external equipment, the controller controls the corresponding output control module to turn on, thereby enabling the transformer module to supply power to the external equipment in a rapid charging mode via the output control module. [Additional note 4] If N=4 and M=3, The four output control modules include a first output control module, a second output control module, a third output control module, and a fourth output control module. The first output control module and the fourth output control module each have one of the control sub-circuits, The second output control module and the third output control module each have two of the control sub-circuits, The three transformer modules include a first transformer module, a second transformer module, and a third transformer module. The first transformer module is connected to the control subcircuit of the first output control module and to the control subcircuit of one of the second output control modules. The second transformer module is connected to the other control subcircuit of the second output control module and to one of the control subcircuits of the third output control module. The third transformer module is connected to the other control subcircuit of the third output control module and the control subcircuit of the fourth output control module. The multi-port output control circuit according to Appendix 2, characterized in that when at most three of the output ports are connected to the external equipment, the controller controls the corresponding output control module to turn on, thereby enabling the transformer module to supply power to the external equipment in a rapid charging mode via the output control module. [Additional note 5] The aforementioned control subcircuit is A first switch circuit whose input terminal is connected to the transformer module and whose output terminal is connected to the input terminal of the output port, A multiport output control circuit according to any one of the appendices 2 to 4, characterized by including a second switch circuit whose input terminal is connected to the controlled terminal of the first switch circuit, whose output terminal is connected to the ground terminal of the output port, and whose controlled terminal is connected to the controller. [Additional note 6] The first switch circuit described above is A first switch element whose input terminal is connected to the input terminal of the first switch circuit, The input terminal of the first switch element is connected to the output terminal of the first switch element, the output terminal of the first switch circuit is connected to the output terminal of the first switch circuit, and the controlled terminal of the second switch element is connected to the controlled terminal of the first switch element and the controlled terminal of the first switch circuit, A first resistor connected to the output terminal and controlled terminal of the first switch element, A first diode whose positive terminal is connected to the input terminal of the first switch element and whose negative terminal is connected to the output terminal of the first switch element, The multiport output control circuit according to Appendix 5, characterized in that it includes a second diode whose positive terminal is connected to the output terminal of the second switch element and whose negative terminal is connected to the input terminal of the second switch element. [Additional note 7] The first switch circuit described above is A first switching element comprising a first PMOS transistor and a first parasitic diode, wherein the drain of the first PMOS transistor is connected to the input terminal of the first switching circuit, the positive terminal of the first parasitic diode is connected to the drain of the first PMOS transistor, and the negative terminal of the first parasitic diode is connected to the source of the first PMOS transistor, A second switching element comprising a second PMOS transistor and a second parasitic diode, wherein the source of the second PMOS transistor is connected to the drain of the first PMOS transistor, the drain of the second PMOS transistor is connected to the output terminal of the first switching circuit, the gate of the second PMOS transistor is connected to the gate of the first PMOS transistor, the positive terminal of the second parasitic diode is connected to the drain of the second PMOS transistor, and the negative terminal of the second parasitic diode is connected to the source of the second PMOS transistor, The multiport output control circuit according to Appendix 5, characterized by including a first resistor connected to the source and gate of the first PMOS transistor. [Additional note 8] The second switch circuit is, A third switch element having its input terminal connected to the input terminal of the second switch circuit, its output terminal connected to the output terminal of the second switch circuit, and its controlled terminal connected to the controlled terminal of the second switch circuit, The multiport output control circuit according to Appendix 5, characterized by including a second resistor connected to the output terminal and the controlled terminal of the third switch element. [Additional note 9] The aforementioned control subcircuit is The multi-port output control circuit according to Appendix 5, further comprising a third resistor connected to the controlled terminal of the first switch circuit and the input terminal of the second switch circuit. [Additional Note 10] The multi-port output control circuit according to Appendix 1, characterized in that when more than M output ports are connected to the external equipment, at least one transformer module supplies power to the external equipment by at least two output control modules. [Additional Note 11] A rectifier module having an AC input terminal and a DC output terminal, the AC input terminal being connected to a commercial power supply, A multiport output control circuit according to any one of the appendices 1 to 10, wherein the input terminal of the transformer module is connected to the DC output terminal of the rectifier module, A power supply circuit characterized by including the transformer module and a protocol chip connected to the output port. [Additional Note 12] A housing with a commercial power port, A circuit board provided inside the housing, A charging device characterized by including a power supply circuit as described in Appendix 11, which is provided on the circuit board, the AC input terminal of the rectifier module is connected to the commercial power port, and the output port is provided on the housing and exposed. [Explanation of Symbols]

[0064] 1 Charging device 11 Housing 12 Circuit boards 2 Power circuit 21 Rectifier Module 22 protocol chips 3. Multi-port output control circuit 31 Output control module 31A output port 311 Control Subcircuit 3111 First Switch Circuit 3112 Second Switch Circuit 32 transformer modules 33 Controllers Q1 First switch related Q2 Second switch component Q3 Third switch element R1 is the first resistor. R2 2nd resistor R3 3rd resistor D1 First Diode D2 Second Bypass

Claims

1. Applied to power supply circuits, Each of the N (N≧2) output control modules includes an output port for connecting to external equipment, M (1 ≤ M < N) transformer modules, each connected to at least two of the output control modules, Includes a controller connected to each of the output control modules for controlling the on / off state of the output control modules, A multi-port output control circuit characterized in that, when at least M of the aforementioned external devices are simultaneously connected to the output port, the transformer module can supply power to the external devices in a rapid charging mode via the output control module.

2. Each of the output control modules is: The multi-port output control circuit according to claim 1, further comprising a control subcircuit connected to the output port, the transformer module, and the controller.

3. When N=4 and M=2, each output control module includes two control subcircuits, both of which are connected to the output port and the controller, and each is also connected to two transformer modules. The multi-port output control circuit according to claim 2, characterized in that when at most two of the output ports are connected to the external equipment, the controller controls the corresponding output control module to turn on, thereby enabling the transformer module to supply power to the external equipment in a rapid charging mode via the output control module.

4. If N=4 and M=3, The four output control modules include a first output control module, a second output control module, a third output control module, and a fourth output control module. The first output control module and the fourth output control module each have one of the control subcircuits, The second output control module and the third output control module each have two of the control sub-circuits, The three transformer modules include a first transformer module, a second transformer module, and a third transformer module. The first transformer module is connected to the control subcircuit of the first output control module and to one of the control subcircuits of the second output control module. The second transformer module is connected to the other control subcircuit of the second output control module and to one of the control subcircuits of the third output control module. The third transformer module is connected to the other control subcircuit of the third output control module and the control subcircuit of the fourth output control module. The multi-port output control circuit according to claim 2, characterized in that when at most three of the output ports are connected to the external equipment, the controller controls the corresponding output control module to turn on, thereby enabling the transformer module to supply power to the external equipment in a rapid charging mode via the output control module.

5. The aforementioned control subcircuit is A first switch circuit whose input terminal is connected to the transformer module and whose output terminal is connected to the input terminal of the output port, The multi-port output control circuit according to claim 2, further comprising: a second switch circuit whose input terminal is connected to the controlled terminal of the first switch circuit, whose output terminal is connected to the ground terminal of the output port, and whose controlled terminal is connected to the controller.

6. The first switch circuit is, A first switch element whose input terminal is connected to the input terminal of the first switch circuit, The input terminal of the second switch element is connected to the output terminal of the first switch element, the output terminal of the first switch circuit is connected to the output terminal of the first switch circuit, and the controlled terminal is connected to the controlled terminal of the first switch element, A first resistor connected to the output terminal and controlled terminal of the first switch element, A first diode whose positive terminal is connected to the input terminal of the first switch element and whose negative terminal is connected to the output terminal of the first switch element, The multiport output control circuit according to claim 5, further comprising a second diode whose positive terminal is connected to the output terminal of the second switch element and whose negative terminal is connected to the input terminal of the second switch element.

7. The first switch circuit is, A first switching element comprising a first PMOS transistor and a first parasitic diode, wherein the drain of the first PMOS transistor is connected to the input terminal of the first switching circuit, the positive electrode of the first parasitic diode is connected to the drain of the first PMOS transistor, and the negative electrode of the first parasitic diode is connected to the source of the first PMOS transistor, A second switching element comprising a second PMOS transistor and a second parasitic diode, wherein the source of the second PMOS transistor is connected to the drain of the first PMOS transistor, the drain of the second PMOS transistor is connected to the output terminal of the first switching circuit, the gate of the second PMOS transistor is connected to the gate of the first PMOS transistor, the positive terminal of the second parasitic diode is connected to the drain of the second PMOS transistor, and the negative terminal of the second parasitic diode is connected to the source of the second PMOS transistor, The multiport output control circuit according to claim 5, further comprising a first resistor connected to the source and gate of the first PMOS transistor.

8. The second switch circuit is, A third switch element having an input terminal connected to the input terminal of the second switch circuit, an output terminal connected to the output terminal of the second switch circuit, and a controlled terminal connected to the controlled terminal of the second switch circuit, The multi-port output control circuit according to claim 5, further comprising a second resistor connected to the output terminal and the controlled terminal of the third switch element.

9. The aforementioned control subcircuit is The multi-port output control circuit according to claim 5, further comprising a third resistor connected to the controlled terminal of the first switch circuit and the input terminal of the second switch circuit.

10. The multi-port output control circuit according to claim 1, characterized in that when more than M output ports are connected to the external equipment, at least one transformer module supplies power to the external equipment by at least two output control modules.

11. A rectifier module having an AC input terminal and a DC output terminal, the AC input terminal being connected to a commercial power supply, A multiport output control circuit according to any one of claims 1 to 10, wherein the input terminal of the transformer module is connected to the DC output terminal of the rectifier module, A power supply circuit characterized by including the transformer module and a protocol chip connected to the output port.

12. A housing with a commercial power port, A circuit board provided inside the housing, A charging device characterized by including a power supply circuit according to claim 11, provided on the circuit board, wherein the AC input terminal of the rectifier module is connected to the commercial power port, and the output port is provided on the housing and exposed.

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