A power supply circuit, an adapter, and a power supply method

Abstract

The application provides a power supply circuit, an adapter and a power supply method, and relates to the technical field of power supply. The power supply circuit comprises an AC / DC module, a voltage regulating module, a protocol detection module, a voltage conversion module, a first switch module and a plurality of output ports, the number of the output ports is greater than the total number of the protocol detection module and the voltage conversion module, the protocol detection module is electrically connected with the voltage regulating module, the voltage conversion module and the first switch module respectively, the voltage regulating module is electrically connected with the AC / DC module, the AC / DC module is used for external power supply and is connected to the first switch module through a power supply main circuit, the first end of the voltage conversion module is connected to the power supply main circuit, the second end of the voltage conversion module is connected to the first switch module, and the first switch module is further connected with the output ports. The power supply circuit, the adapter and the power supply method provided by the application have the advantage of lower cost.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and more specifically, to a power supply circuit, adapter, and power supply method. Background Technology

[0002] With the widespread use of electronic devices, multi-function adapters have become popular products that meet people's daily needs, and thus these products have occupied a considerable market share.

[0003] Currently, multi-function adapters typically include multiple output ports, allowing them to power different loads. Furthermore, to achieve independent power supply to different loads, each output port is equipped with a corresponding protocol detection chip, resulting in a higher overall cost for the adapter.

[0004] In summary, existing technologies suffer from the problem of high adapter costs. Summary of the Invention

[0005] The purpose of this application is to provide a power supply circuit, adapter, and power supply method to solve the problem of high adapter costs in the prior art.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0007] In a first aspect, embodiments of this application provide a power supply circuit, which includes an AC / DC module, a voltage regulation module, a protocol detection module, a voltage conversion module, a first switch module, and multiple output ports. The number of output ports is greater than the total number of the protocol detection module and the voltage conversion module. The protocol detection module is electrically connected to the voltage regulation module, the voltage conversion module, and the first switch module, respectively. The voltage regulation module is electrically connected to the AC / DC module. The AC / DC module is used to connect to an external power supply and is connected to the first switch module through a main power supply circuit. A first terminal of the voltage conversion module is connected to the main power supply circuit, and a second terminal of the voltage conversion module is connected to the first switch module. The first switch module is also connected to the output ports.

[0008] When in a single-load power supply state, the voltage regulation module is used to adjust the output voltage of the AC / DC module according to the detection signal of the protocol detection module, so that the single load is in a fast charging state;

[0009] When in a multi-load power supply state, the voltage regulation module is used to adjust the output voltage of the AC / DC module according to the detection signal of the protocol detection module so that the load connected to the target output port is in a fast charging state; the voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module so as to charge the loads connected to the other output ports.

[0010] Optionally, the power supply circuit further includes a battery module and a second switch module, wherein the battery module is electrically connected to the voltage conversion module through the second switch module, and the protocol detection module is electrically connected to the second switch module;

[0011] In battery-powered mode, when in a single-load power supply state, the voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module so that the single load is in a fast charging state.

[0012] In battery-powered mode, when in a multi-load power supply state, the voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module, so as to charge all loads under power sharing conditions.

[0013] Optionally, in the external power supply mode, when in a single-load power supply state, the voltage conversion module is also used to adjust the output voltage of the first terminal according to the control signal of the protocol detection module and charge the battery module.

[0014] Optionally, the plurality of output ports includes at least one A port and at least two C ports, and the target output port is one of the C ports;

[0015] When in a multi-load power supply state, the protocol detection module is also used to detect the required voltage of each output port;

[0016] When a target C port with the same voltage requirement as the target output port exists, the voltage regulation module is used to adjust the output voltage of the AC / DC module so that the load connected to the target output port and the target C port is in a fast charging state;

[0017] The voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module in order to charge the load connected to the other output ports.

[0018] Optionally, the plurality of output ports includes at least one A port and at least two C ports, and the target output port is one of the C ports;

[0019] The protocol detection module is also used to adjust the conduction state of the first switch module to select a target output port from the at least two C ports.

[0020] Optionally, when the plurality of output ports includes Port A, a first Port C, and a second Port C, the first switching module includes a first switch transistor, a second switch transistor, a third switch transistor, a fourth switch transistor, a fifth switch transistor, a sixth switch transistor, and a seventh switch transistor. The control terminals of the first switch transistor, the second switch transistor, the third switch transistor, the fourth switch transistor, the fifth switch transistor, the sixth switch transistor, and the seventh switch transistor are all electrically connected to the protocol detection module. One end of the first switch transistor, the second switch transistor, and the third switch transistor are electrically connected to the main power supply circuit. The other end of the first switch transistor is electrically connected to the first Port C. The other end of the second switch transistor is electrically connected to the other ends of the fourth and fifth switch transistors. The other end of the fourth switch transistor is electrically connected to the second Port C. The other end of the fifth switch transistor is electrically connected to the voltage conversion module and one end of the sixth switch transistor. The other end of the sixth switch transistor is electrically connected to the other end of the third switch transistor and one end of the seventh switch transistor. The other end of the seventh switch transistor is electrically connected to Port A.

[0021] Optionally, the voltage conversion module includes a main voltage conversion module and a slave voltage conversion module;

[0022] When in a multi-load power supply state, the slave voltage conversion module is used to charge the load of the corresponding output port and put the load of the corresponding output port into a fast charging state; the master voltage conversion module is used to charge the loads connected to the remaining output ports other than the output port corresponding to the slave voltage conversion module and the target output port.

[0023] Optionally, when in a dual-load power supply state, the plurality of output ports include at least one A port and at least two C ports;

[0024] When powered by dual loads, the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal of the protocol detection module so that one of the loads is in a fast charging state; the voltage conversion module adjusts its own output voltage according to the control signal of the protocol detection module so that the other load is also in a fast charging state.

[0025] Optionally, the power supply circuit further includes a third switch module, the protocol detection module is electrically connected to the third switch module, and the voltage conversion module is connected to the main power supply circuit through the third switch module;

[0026] When under single load conditions, the protocol detection module controls the third switch module to turn off; when under multi-load conditions, the protocol detection module controls the third switch module to turn on.

[0027] Secondly, embodiments of this application also provide an adapter, the adapter including a plug and the aforementioned power supply circuit, the plug being electrically connected to the AC / DC module of the power supply circuit.

[0028] Thirdly, embodiments of this application also provide a power supply method applied to the protocol detection module in the aforementioned power supply circuit, the power supply method comprising:

[0029] Obtain the power supply status of the power supply circuit; wherein, the power supply status includes single-load power supply status and multi-load power supply status;

[0030] When in a single-load power supply state, the required voltage of the load is obtained, a detection signal is generated based on the required voltage, and the detection signal is sent to the voltage regulation module so that the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal and drives the single load to be in fast charging state;

[0031] When in a multi-load power supply state, the required voltage of all loads is obtained, a detection signal is generated based on the required voltage of the target output port, and the detection signal is sent to the voltage regulation module so that the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal and drives the load connected to the target output port to be in fast charging state; a control signal is generated based on the required voltage of the other output ports, and the output voltage of the voltage conversion module is adjusted to charge the loads connected to the other output ports.

[0032] Compared with the prior art, this application has the following advantages:

[0033] This application provides a power supply circuit, adapter, and power supply method. The power supply circuit includes an AC / DC module, a voltage regulation module, a protocol detection module, a voltage conversion module, a first switch module, and multiple output ports. The number of output ports is greater than the total number of the protocol detection module and the voltage conversion module. The protocol detection module is electrically connected to the voltage regulation module, the voltage conversion module, and the first switch module. The voltage regulation module is electrically connected to the AC / DC module. The AC / DC module is used to connect to an external power supply and is connected to the first switch module through a main power supply circuit. The first terminal of the voltage conversion module is connected to the main power supply circuit, and the second terminal of the voltage conversion module is connected to the first switch module. The first switch module is also connected to the output ports. When in a single-load power supply state, the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal from the protocol detection module to enable fast charging of the single load. When in a multi-load power supply state, the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal from the protocol detection module to enable fast charging of the load connected to the target output port. The voltage conversion module adjusts its own output voltage according to the control signal from the protocol detection module to charge the loads connected to the other output ports.

[0034] On the one hand, since the number of output ports in the power supply circuit provided in this application is greater than the total number of protocol detection modules and voltage conversion modules, the number of protocol detection modules can be reduced, thereby lowering the overall cost of the power supply circuit. On the other hand, this application uses only one protocol detection module, which, together with the voltage regulation module, regulates the output voltage of the AC / DC module and controls the output of the voltage conversion module, realizing the multi-functional multiplexing of the protocol detection module and further reducing costs.

[0035] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of a power supply circuit provided in an embodiment of this application.

[0038] Figure 2 This is a first circuit diagram of a power supply circuit provided in an embodiment of this application.

[0039] Figure 3 This is a second circuit diagram of the power supply circuit provided in an embodiment of this application.

[0040] Figure 4 This is a third circuit diagram of the power supply circuit provided in the embodiments of this application.

[0041] In the picture:

[0042] 110-AC / DC module; 120-Voltage regulation module; 130-Protocol detection module; 140-Voltage conversion module; 141-Main voltage conversion module; 142-Slave voltage conversion module; 150-First switch module; 160-Output port; 170-Battery module; 180-Second switch module; 190-Third switch module; M1-First switch transistor; M2-Second switch transistor; M3-Third switch transistor; M4-Fourth switch transistor; M5-Fifth switch transistor; M6-Sixth switch transistor; M7-Seventh switch transistor; M8-Eighth switch transistor; M9-Ninth switch transistor. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0045] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0047] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0048] As described in the background section, current all-in-one adapters typically require a separate protocol detection chip for each output port. While this approach enables independent power supply control for each output port, the overall cost is high, and the adapter itself is bulky.

[0049] In view of this, and in order to solve the above problems, this application provides a power supply circuit. The power supply circuit provided in this application is described below as an example:

[0050] As an optional implementation, please refer to Figure 1The power supply circuit includes an AC / DC module 110, a voltage regulation module 120, a protocol detection module 130, a voltage conversion module 140, a first switch module 150, and multiple output ports 160. The number of output ports 160 is greater than the total number of the protocol detection module 130 and the voltage conversion module 140. The protocol detection module 130 is electrically connected to the voltage regulation module 120, the voltage conversion module 140, and the first switch module 150. The voltage regulation module 120 is electrically connected to the AC / DC module 110. The AC / DC module 110 is used to connect to an external power supply and is connected to the first switch module 150 through the main power supply circuit. The first end of the voltage conversion module 140 is connected to the main power supply circuit, and the second end of the voltage conversion module 140 is connected to the first switch module 150. The first switch module 150 is also connected to the output ports 160.

[0051] During use, when in a single-load power supply state, the voltage regulating module 120 adjusts the output voltage of the AC / DC module 110 according to the detection signal of the protocol detection module 130 to enable the single load to be in a fast charging state; when in a multi-load power supply state, the voltage regulating module 120 adjusts the output voltage of the AC / DC module 110 according to the detection signal of the protocol detection module 130 to enable the load connected to the target output port 160 to be in a fast charging state; the voltage conversion module 140 adjusts its own output voltage according to the control signal of the protocol detection module 130 to charge the loads connected to the other output ports 160.

[0052] Understandably, on the one hand, since the number of output ports in the power supply circuit provided in this application is greater than the total number of protocol detection modules and voltage conversion modules, compared with the prior art scheme of setting one protocol detection module for each output port, this application can save the number of protocol detection modules, thereby reducing the cost and size of the entire power supply circuit. On the other hand, this application uses only one protocol detection module, in conjunction with a voltage regulation module, to regulate the output voltage of the AC / DC module, while controlling the output of the voltage conversion module, realizing the multi-functional multiplexing of the protocol detection module. On this basis, the voltage conversion module is used to regulate the output voltage of some output ports, so that there is no need to set up multiple protocol detection modules, and the cost of using the voltage conversion module is much lower than the cost of the protocol detection module, thus further reducing the cost of the entire power supply circuit.

[0053] It should be noted that the protocol detection module 130 provided in this application can detect the specific port where the load is inserted after it is plugged into the output port 160, thereby determining whether it is single-load or multi-load power supply. Simultaneously, during the power supply process, it can acquire the load's required voltage and adjust the specific output voltage of the output port 160 accordingly. It should also be noted that, in this application, "single load" refers to only one of the multiple output ports 160 connected to a load; similarly, "dual load" refers to two of the multiple output ports 160 connected to a load; and "multiple load" refers to at least three of the multiple output ports 160 connected to a load.

[0054] Based on this, when the input terminal of the AC / DC module 110 is connected to mains power, and a load is connected to the power supply circuit, the protocol detection module 130 can detect the specific port connected to the load and then enter the corresponding power supply state. For example, if there are three output ports 160, when the load is powered by a single load, the protocol detection module 130 will detect the required voltage of the load and generate a detection signal based on the detected required voltage. Then, the detection signal is sent to the voltage regulation module 120. The voltage regulation module 120 can then adjust the output voltage of the AC / DC module 110 to achieve feedback regulation, ultimately making the voltage on the main power supply line equal to the required voltage of the load in fast charging mode, thus achieving fast charging for a single load.

[0055] When multiple loads are detected to be connected simultaneously, the output voltage of the AC / DC module 110 is adjusted by the combined action of the protocol detection module 130 and the voltage regulation module 120 to ensure that the main power supply meets the voltage requirements of the load connected to the target output port 160. The target output port 160 is a fast charging port, allowing the load connected to it to be in fast charging mode. Simultaneously, the protocol detection module 130 also controls the output voltage of the voltage conversion module 140 to charge the remaining loads. At this time, the remaining loads are charged under power-sharing conditions, thus undergoing normal charging.

[0056] It should be noted that the voltage conversion module 140 provided in this application can be a BUCK-BOOST module, i.e., a buck-boost module. The BUCK-BOOST module can be connected to the main power supply circuit, thereby drawing power from it, and then adjusting its output voltage under the control (duty cycle adjustment) of the protocol detection module 130. Since the BUCK-BOOST module is a common module with low cost, compared to the existing technology's solution of powering multiple protocol detection chips, the combination of the protocol detection module and the BUCK-BOOST module in this application can significantly reduce costs.

[0057] It should also be noted that "fast charging" and "normal charging" mentioned in this application refer to charging methods, with fast charging referring to a charging method that is faster than normal charging. Generally speaking, normal charging refers to the standard charging method using 5V / 1A or 5V / 2A; while fast charging provides higher power than normal charging, achieving a faster charging speed by increasing current, voltage, or a combination of both. It can generally bring the battery to or near full charge within 1-2 hours.

[0058] As one implementation method, please refer to Figure 2 This is a circuit diagram illustrating one specific embodiment of this application. The output port 160 has three ports: C1, C2, and A. C1 represents the first C port, and C2 represents the second C port. In this application, C port is the Type-C port, and A port is the Type-A port. The Type-C port uses a reversible pluggable design, supporting higher transmission speeds and multi-functional integration; while the Type-A port is a traditional rectangular interface with relatively simple functions. Generally, the charging voltage of the A port is around 5V, while the charging voltage of the C port is 5-20V.

[0059] Figure 2 In this configuration, DCIN represents the main power supply line, FB represents the feedback line, and GND represents the ground line. Figure 2 In the circuit shown, the first switching module 150 includes a first switching transistor M1, a second switching transistor M2, a third switching transistor M3, and a fourth switching transistor M4. The control terminals of the first switching transistor M1, the second switching transistor M2, the third switching transistor M3, and the fourth switching transistor M4 are all connected to the protocol detection module 130. One end of the first switching transistor M1 is connected to the main power supply circuit, and the other end is connected to port C1. One end of the second switching transistor M2 is connected to the main power supply circuit, and the other end is connected to one end of the third switching transistor M3, the fourth switching transistor M4, and the voltage conversion module 140, respectively. The other end of the third switching transistor M3 is connected to port C2, and the other end of the fourth switching transistor M4 is connected to port A. The switching transistors described in this application can be either transistors or MOSFETs, and are not limited thereto.

[0060] When in a single-load power supply state, for example, when a load is connected to port C1, the protocol detection module 130 obtains the required voltage of the load and adjusts the output voltage of the AC / DC module 110 through the adjustment module, so that the voltage output by the main power supply circuit reaches the voltage required for fast charging of the load at port C1, such as 20V. At this time, the protocol detection module 130 controls the first switch M1 to turn on, while controlling the second switch M2, the third switch M3, and the fourth switch M4 to turn off, thus providing independent power supply for port C1. Similarly, if a load is connected to port C2, the protocol detection module 130 also ensures that the voltage output by the main power supply circuit reaches the voltage required for fast charging of the load at port C2, and at this time, the protocol detection module 130 controls the first switch M1 and the fourth switch M4 to turn off, while controlling the second switch M2 and the third switch M3 to turn on. If a load is connected to port A, the second switch M2 and the fourth switch M4 are turned on, while the first switch M1 and the third switch M3 are turned off. By controlling the on / off state of each switching transistor through the protocol detection module 130, it can be ensured that when a single load is connected, the main power supply can always directly supply power to the load according to the load's required voltage, and the load is in a fast charging state, thereby improving the charging efficiency of the load.

[0061] When in a multi-load power supply state, and with port C1 as the target output port 160, the protocol detection module 130 obtains the required voltage of the load and adjusts the output voltage of the AC / DC module 110 through the adjustment module, so that the voltage output by the main power supply circuit reaches the voltage required for fast charging of the load at port C1, such as 20V. At this time, the protocol detection module 130 controls the first switch M1, the third switch M3, and the fourth switch M4 to conduct, while simultaneously controlling the second switch M2 to turn off, thus achieving fast charging of the load at port C1. Furthermore, the protocol detection module 130 also controls the switch M6 to conduct and sends a control signal to the voltage conversion module 140. Under the action of the control signal, the voltage conversion module 140 adjusts its own output voltage and supplies power to the loads at ports C2 and A. Specifically, if the required voltage for port C2 is 15V and the required voltage for port A is 5V, then the voltage output by the voltage conversion module 140 is 5V, and the load plugged into C2 is charged using the normal charging mode. This implementation method ensures that at least one output port can be in fast charging mode while simultaneously powering multiple loads, thus improving charging efficiency.

[0062] When in a dual-load power supply state, the power supply strategy can be adaptively adjusted according to the specific output port 160 connected to the load. For example, if both C1 and C2 ports are plugged into loads, the protocol detection module 130 controls the main power supply circuit to supply power to the load at port C1, and puts the load at port C1 into a fast-charging state. At the same time, the protocol detection module 130 also controls the voltage conversion module 140 to supply power to the load at port C2, and adaptively controls the on / off state of each switch in the first switching module 150. Of course, when the required voltages of ports C1 and C2 are the same, the main power supply circuit can also supply power to the loads at ports C1 and C2 simultaneously. When loads are plugged into ports C2 and A, the protocol detection module 130 directly controls the voltage conversion module 140 to supply power to the loads at ports C2 and A simultaneously.

[0063] Furthermore, in one implementation, the power supply circuit provided in this application can also support charging in power bank mode (i.e., battery-powered mode). For further details, please refer to [link / reference needed]. Figure 2 The power supply circuit also includes a battery module 170 and a second switch module 180. The battery module 170 is electrically connected to the voltage conversion module 140 through the second switch module 180, and the protocol detection module 130 is electrically connected to the second switch module 180. In battery power supply mode (i.e., charging in power bank mode), when in single-load power supply state, the voltage conversion module 140 adjusts its own output voltage according to the control signal of the protocol detection module 130 to enable the single load to be in fast charging state. In battery power supply mode, when in multi-load power supply state, the voltage conversion module 140 adjusts its own output voltage according to the control signal of the protocol detection module 130 to charge all loads under power sharing conditions.

[0064] Understandably, when the external power supply to the AC / DC module 110 is disconnected, the entire power supply circuit supplies power to the downstream load through the battery module 170. Similar to the external power supply mode, in a single-load power supply state, the protocol detection module 130 controls the output voltage of the voltage conversion module according to the load's required voltage, thereby enabling the load to be in a fast-charging state. When in a dual-load or multi-load state, the voltage conversion module 140 outputs the minimum required voltage among all loads and supplies power to the downstream load through power sharing.

[0065] It should be noted that this application improves the portability of the entire power supply circuit by adding a battery module to the power supply circuit, enabling the entire charging circuit to have at least two charging modes. When in external power supply charging mode, the downstream load is directly powered by an external power source; when in battery power supply mode, the downstream load is directly powered by the battery module.

[0066] Furthermore, after the power module is set up, in the external power supply mode, when in a single-load power supply state, the voltage conversion module 140 is also used to adjust the output voltage of the first terminal according to the control signal of the protocol detection module 130 and charge the battery module 170. That is, the voltage conversion module 140 is bidirectional, which can convert the voltage of the main power supply line into the voltage required by the load and output it to the downstream load, and can also convert the voltage of the main power supply line into the voltage required by the battery module 170 and charge the battery module 170.

[0067] In one implementation, the plurality of output ports 160 include at least one A port and at least two C ports, and the target output port 160 is one of the C ports; when in a multi-load power supply state, the protocol detection module 130 is also used to detect the required voltage of each output port 160; when there is a target C port that matches the required voltage of the target output port 160, the voltage regulation module 120 is used to adjust the output voltage of the AC / DC module 110 so that the loads connected to the target output port 160 and the target C port are in a fast charging state; the voltage conversion module 140 is used to adjust its own output voltage according to the control signal of the protocol detection module 130 so as to charge the loads connected to the other output ports 160.

[0068] In this application, the number of output ports 160 is not limited; for example, in Figure 2 Based on this, output port 160 can also add another port A. When the load is powered, the voltage conversion module 140 simultaneously powers both ports A and port C2, sharing power.

[0069] Furthermore, by detecting the required voltage of each output port 160, more loads can be put into fast charging mode when the required voltage is the same, which can effectively improve charging efficiency.

[0070] Furthermore, in order to improve the application flexibility of the power supply circuit, the protocol detection module 130 is also used to adjust the conduction state of the first switch module 150 to select the target output port 160 from at least two C ports.

[0071] In this application, the protocol detection module 130 can also dynamically adjust the fast charging output port 160 under multi-load power supply conditions by controlling the first switch module 150, thereby improving the charging flexibility.

[0072] Based on this, please refer to another implementation method. Figure 3When the multiple output ports 160 include port A, the first port C, and the second port C, the first switch module 150 includes a first switch transistor M1, a second switch transistor M2, a third switch transistor M3, a fourth switch transistor M4, a fifth switch transistor M5, a sixth switch transistor M6, and a seventh switch transistor M7. The control terminals of the first switch transistor M1, the second switch transistor M2, the third switch transistor M3, the fourth switch transistor M4, the fifth switch transistor M5, the sixth switch transistor M6, and the seventh switch transistor M7 are all electrically connected to the protocol detection module 130. The first switch transistor M1, the second switch transistor M2, and the seventh switch transistor M7 are all electrically connected to the protocol detection module 130. One end of the three-switch transistor M3 is electrically connected to the main power supply circuit. The other end of the first switch transistor M1 is electrically connected to the first C port. The other end of the second switch transistor M2 is electrically connected to the other ends of the fourth switch transistor M4 and the fifth switch transistor M5. The other end of the fourth switch transistor M4 is electrically connected to the second C port. The other end of the fifth switch transistor M5 is electrically connected to the voltage conversion module 140 and one end of the sixth switch transistor M6. The other end of the sixth switch transistor M6 is electrically connected to the other end of the third switch transistor M3 and one end of the seventh switch transistor M7. The other end of the seventh switch transistor M7 is electrically connected to the A port.

[0073] Meanwhile, the power supply circuit also includes a third switch module 190, with the protocol detection module 130 electrically connected to the third switch module 190, and the voltage conversion module 140 connected to the main power supply circuit through the third switch module 190. When under single-load conditions, the protocol detection module 130 controls the third switch module M3 to turn off; when under multi-load conditions, the protocol detection module 130 controls the third switch module M3 to turn on. For example... Figure 3 As shown, the second switch module 180 includes an eighth switch transistor M8, and the third switch module 190 includes a ninth switch transistor M9.

[0074] In this embodiment, when in battery-powered mode, the voltage conversion module 140 converts the output voltage of the battery module 170 to the voltage required by the load, thereby providing power. Furthermore, when under dual or multiple load conditions, power can be supplied to the loads through power sharing.

[0075] In external power supply mode, when under single-load power supply, the protocol detection module 130 detects the load's required voltage and adjusts the output voltage of the AC / DC module 110 via the voltage regulation module 120. Simultaneously, the protocol detection module 130 also controls the on / off state of each switch in the first switching module 150, enabling power supply to the load via the main power supply circuit, thus putting the load in a fast-charging state.

[0076] For example, when Figure 3When a load is inserted into port C1, the voltage regulator module 120 controls the output voltage of the AC / DC module 110 to meet the load requirements at port C1, while simultaneously turning off the second to ninth switches M2 through M9. Alternatively, if charging of the battery module 170 is required at this time, the second, sixth, and eighth switches M2, M6, and M8 can be turned on, or the third, fifth, and eighth switches M3, M5, and M8 can be turned on.

[0077] When a load is inserted into port C2, the third switch M3 and the fourth switch M4 can be turned on, while the remaining switches are turned off. When a load is inserted into port A, the second switch M2 and the seventh switch M7 can be turned on, while the remaining switches are turned off.

[0078] Moreover, in Figure 3 Based on the aforementioned circuit, a voltage conversion module 140 can also power a single load, putting it into a fast-charging state, which will not be elaborated further here. For example, when a load is plugged into port A, the sixth switch M6, the seventh switch M7, and the ninth switch M9 can be turned on, while the remaining switches are turned off, allowing the voltage conversion module 140 to directly power the load at port A. Based on this, through... Figure 3 The circuit shown allows for two power supply paths in a single-load power supply state, and only one path needs to be selected for power supply, making the entire circuit more flexible.

[0079] When powered by dual loads, the voltage regulation module 120 adjusts the output voltage of the AC / DC module 110 according to the detection signal of the protocol detection module 130 so that one of the loads is in a fast charging state; the voltage conversion module 140 adjusts its own output voltage according to the control signal of the protocol detection module 130 so that the other load is also in a fast charging state.

[0080] That is, in Figure 3 In the circuit described, when powering dual loads, the protocol detection module 130 and the battery module 170 can work together to ensure that both loads are in a fast-charging state.

[0081] In the case of dual-load power supply, under the control of the protocol detection module 130, one load can be fast-charged through the main power supply circuit, and the other load can be fast-charged through the voltage conversion module 140, thereby improving the overall charging efficiency.

[0082] For example, when loads are plugged into ports C1 and C2, the main power supply can directly power the load at port C1, while the voltage conversion module 140 powers the load at port C2. Furthermore, the protocol detection module 130 controls the first switch M1, the ninth switch M9, the fourth switch M4, and the fifth switch M5 to be turned on, while the remaining switches are turned off. This ensures that the main power supply provides the required voltage to the load at port C1, and the voltage conversion module 140 provides the required voltage to the load at port C2, thereby enabling fast charging for loads plugged into both ports C1 and C2.

[0083] Of course, if the required voltages of ports C1 and C2 are the same, the loads of ports C1 and C2 can be powered simultaneously through the main power supply circuit.

[0084] When a load is plugged into C1 and Port A, the load at Port C1 can be powered directly through the main power supply circuit, while the load at Port A can be powered through the voltage conversion module 140.

[0085] When a load is plugged into port C2 and port A, the load at port C2 can be powered directly through the main power supply line, while the load at port A can be powered simultaneously through the voltage conversion module 140. Alternatively, the load at port A can be powered directly through the main power supply line, while the load at port C2 can be powered simultaneously through the voltage conversion module 140. In this case, it is only necessary to turn on the second switch M2, the seventh switch M7, the fourth switch M4, the fifth switch M5, and the ninth switch M9, while turning off the remaining switches.

[0086] When under multi-load power supply, any output port 160 can be selected as a fast charging port, which provides greater flexibility.

[0087] For example, when port C1 is selected as the target output port 160, the voltage regulation module 120 can adjust the output voltage of the main power supply circuit to directly fast charge the load of port C1; at the same time, the protocol detection module 130 can also control the output voltage of the voltage conversion module 140 to supply power to the loads of ports C2 and A. At this time, the protocol detection module 130 controls the first switch M1, the ninth switch M9, the fourth switch M4, the fifth switch M5, the sixth switch M6, and the seventh switch M7 to be turned on, while the remaining switches are turned off.

[0088] When port C2 is selected as the target output port 160, the voltage regulation module 120 can adjust the output voltage of the main power supply circuit to directly charge the loads of ports C1 and A. Simultaneously, the protocol detection module 130 can control the output voltage of the voltage conversion module 140 to supply power to the loads of port C2, enabling fast charging of the loads at port C2. At this time, the protocol detection module 130 controls the ninth switch M9, the first switch M1, the second switch M2, the seventh switch M7, the fourth switch M4, and the fifth switch M5 to be turned on, while the remaining switches are turned off.

[0089] Based on this circuit implementation, the power supply circuit can flexibly switch the load in fast charging mode. For example, when in a multi-load power supply state, if the charging priority of the load connected to port C2 is increased during the charging process, the user only needs to send a command to the protocol detection module 130. The protocol detection module 130 can achieve fast charging of the load connected to port C2 without plugging or unplugging by switching the on and off states of each switch.

[0090] Furthermore, the power supply circuit provided in this application offers greater scalability. For example, please refer to... Figure 4 In one implementation, the voltage conversion module 140 includes a main voltage conversion module 141 and a slave voltage conversion module 142. When in a multi-load power supply state, the slave voltage conversion module 142 is used to charge the load of the corresponding output port 160 and put the load of the corresponding output port 160 into a fast charging state. The main voltage conversion module 141 is used to charge the loads connected to the remaining output ports 160 other than the output port 160 corresponding to the slave voltage conversion module 142 and the target output port 160.

[0091] Right now Figure 4 In the case of a multi-load power supply, the voltage conversion module 142, under the control of the protocol detection module 130, outputs the required voltage of the load at port C3, so that the load at port C3 can be in a fast charging state; while the main voltage conversion module 141, under the control of the protocol detection module 130, supplies power to port A and one of the ports C.

[0092] Of course, Figure 4 For illustrative purposes only, when the power supply circuit requires a larger number of output ports 160, additional voltage conversion modules 142 can be added. For example, when there are 5 output ports 160, there are 2 voltage conversion modules 142, 1 main voltage conversion module 141, and 1 protocol detection module 130. Furthermore, each voltage conversion module 142, under the control of the protocol detection module 130, can provide fast charging for the load of the corresponding output port 160.

[0093] Based on the above implementation, this application also provides an adapter, which includes a plug connected to the aforementioned power supply circuit, and the plug is electrically connected to the AC / DC module 110 of the power supply circuit. When the adapter's plug is connected to an AC power source, it can supply power to the downstream load and the internal battery module 170. Furthermore, since the power supply circuit uses a combination of a protocol detection module and a voltage conversion module, it can achieve low cost and small size. Therefore, the adapter of this application can also achieve better miniaturization overall, while significantly reducing costs.

[0094] Of course, adding a battery module to the power supply circuit can improve the portability of the adapter. When the adapter is plugged into an external power source, it can be used as a regular charger to power downstream loads; when the adapter is disconnected from the external power source, it can be used as a power bank, using the internal battery module 170 to portablely and flexibly power downstream loads. Overall, the charger and power bank functions are integrated into one, improving the user experience.

[0095] In addition, the power supply circuit adopts, for example Figure 3 The circuit shown allows for flexible adjustment of the fast charging output port during multi-load power supply, enabling users to switch between fast charging ports without unplugging or plugging in the load again. For example, in one implementation, a fast charging switch button is provided on the adapter, which is connected to a protocol detection module. When the user presses the fast charging switch button, the protocol detection module reconfigures the on / off states of each switch in the first switching module, thereby achieving the switching of the fast charging output port.

[0096] Based on the above implementation, this application embodiment also provides a power supply method applied to the protocol detection module 130 in the power supply circuit, the power supply method including:

[0097] S102, Obtain the power supply status of the power supply circuit; wherein, the power supply status includes single-load power supply status and multi-load power supply status;

[0098] S104, when in single-load power supply state, obtains the required voltage of the load, generates a detection signal based on the required voltage, and sends the detection signal to the voltage regulation module, so that the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal and drives the single load to fast charging state;

[0099] S106: When in a multi-load power supply state, obtain the required voltage of all loads, generate a detection signal based on the required voltage of the target output port, and send the detection signal to the voltage regulation module so that the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal and drives the load connected to the target output port to be in fast charging state; generate a control signal based on the required voltage of the other output ports and adjust the output voltage of the voltage conversion module to charge the loads connected to the other output ports.

[0100] Understandably, the power supply method provided in this application achieves overall control through a protocol detection module, eliminating the need for additional control chips and thus reducing costs. Furthermore, the protocol detection module uniformly sends control commands throughout the power supply circuit, minimizing voltage fluctuations and improving overall stability.

[0101] Of course, when the power supply circuit includes a battery module, the protocol detection module will also acquire the power supply mode in addition to the power supply method described above, thereby achieving precise control of the power supply path. Furthermore, the protocol detection module will also control the on / off state of each switch in the first, second, and third switch modules to correspond to different charging paths, which will not be elaborated upon here.

[0102] In summary, this application provides a power supply circuit, adapter, and power supply method. The power supply circuit includes an AC / DC module, a voltage regulation module, a protocol detection module, a voltage conversion module, a first switch module, and multiple output ports. The number of output ports is greater than the total number of the protocol detection module and the voltage conversion module. The protocol detection module is electrically connected to the voltage regulation module, the voltage conversion module, and the first switch module. The voltage regulation module is electrically connected to the AC / DC module. The AC / DC module is used to connect to an external power supply and is connected to the first switch module through a main power supply circuit. The first terminal of the voltage conversion module is connected to the main power supply circuit, and the second terminal of the voltage conversion module is connected to the first switch module. The first switch module is also connected to the output ports. Specifically, when in a single-load power supply state, the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal from the protocol detection module to enable the single load to be in a fast-charging state. When in a multi-load power supply state, the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal from the protocol detection module to enable the load connected to the target output port to be in a fast-charging state. The voltage conversion module adjusts its own output voltage according to the control signal from the protocol detection module to charge the loads connected to the other output ports. On the one hand, since the number of output ports in the power supply circuit provided in this application is greater than the total number of protocol detection modules and voltage conversion modules, the number of protocol detection modules can be reduced, thereby lowering the overall cost of the power supply circuit. On the other hand, this application uses only one protocol detection module, which, together with the voltage regulation module, regulates the output voltage of the AC / DC module and controls the output of the voltage conversion module, realizing the multi-functional multiplexing of the protocol detection module and further reducing costs.

[0103] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0104] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A power supply circuit, characterized in that, The power supply circuit includes an AC / DC module, a voltage regulation module, a protocol detection module, a voltage conversion module, a first switch module, and multiple output ports. The number of output ports is greater than the total number of the protocol detection module and the voltage conversion module. The protocol detection module is electrically connected to the voltage regulation module, the voltage conversion module, and the first switch module. The voltage regulation module is electrically connected to the AC / DC module. The AC / DC module is used to connect to an external power supply and is connected to the first switch module via a main power supply circuit. The first terminal of the voltage conversion module is connected to the main power supply circuit, and the second terminal of the voltage conversion module is connected to the first switch module. The first switch module is also connected to the output ports. When in a single-load power supply state, the voltage regulation module is used to adjust the output voltage of the AC / DC module according to the detection signal of the protocol detection module, so that the single load is in a fast charging state; When in a multi-load power supply state, the voltage regulation module is used to adjust the output voltage of the AC / DC module according to the detection signal of the protocol detection module so that the load connected to the target output port is in a fast charging state; the voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module so as to charge the loads connected to the other output ports.

2. The power supply circuit as described in claim 1, characterized in that, The power supply circuit also includes a battery module and a second switch module. The battery module is electrically connected to the voltage conversion module through the second switch module, and the protocol detection module is electrically connected to the second switch module. In battery-powered mode, when in a single-load power supply state, the voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module so that the single load is in a fast charging state. In battery-powered mode, when in a multi-load power supply state, the voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module, so as to charge all loads under power sharing conditions.

3. The power supply circuit as described in claim 2, characterized in that, In external power supply mode, when in single-load power supply state, the voltage conversion module is also used to adjust the output voltage of the first terminal according to the control signal of the protocol detection module and charge the battery module.

4. The power supply circuit as described in claim 1, characterized in that, The plurality of output ports includes at least one A port and at least two C ports, and the target output port is one of the C ports; When in a multi-load power supply state, the protocol detection module is also used to detect the required voltage of each output port; When a target C port with the same voltage requirement as the target output port exists, the voltage regulation module is used to adjust the output voltage of the AC / DC module so that the load connected to the target output port and the target C port is in a fast charging state; The voltage conversion module is used to adjust its own output voltage according to the control signal of the protocol detection module in order to charge the load connected to the other output ports.

5. The power supply circuit as described in claim 1, characterized in that, The plurality of output ports includes at least one A port and at least two C ports, and the target output port is one of the C ports; The protocol detection module is also used to adjust the conduction state of the first switch module to select a target output port from the at least two C ports.

6. The power supply circuit as described in claim 1, characterized in that, When the plurality of output ports includes Port A, a first Port C, and a second Port C, the first switching module includes a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a fifth switching transistor, a sixth switching transistor, and a seventh switching transistor. The control terminals of the first switching transistor, the second switching transistor, the third switching transistor, the fourth switching transistor, the fifth switching transistor, the sixth switching transistor, and the seventh switching transistor are all electrically connected to the protocol detection module. One end of the first switching transistor, the second switching transistor, and the third switching transistor are electrically connected to the main power supply circuit. The other end of the first switching transistor is electrically connected to the first Port C. The other end of the second switching transistor is electrically connected to the other ends of the fourth and fifth switching transistors. The other end of the fourth switching transistor is electrically connected to the second Port C. The other end of the fifth switching transistor is electrically connected to the voltage conversion module and one end of the sixth switching transistor. The other end of the sixth switching transistor is electrically connected to the other end of the third switching transistor and one end of the seventh switching transistor. The other end of the seventh switching transistor is electrically connected to Port A.

7. The power supply circuit as described in claim 1, characterized in that, The voltage conversion module includes a main voltage conversion module and a slave voltage conversion module; When in a multi-load power supply state, the slave voltage conversion module is used to charge the load of the corresponding output port and put the load of the corresponding output port into a fast charging state; the master voltage conversion module is used to charge the loads connected to the remaining output ports other than the output port corresponding to the slave voltage conversion module and the target output port.

8. The power supply circuit as described in claim 1, characterized in that, When in dual-load power supply mode, the plurality of output ports include at least one A port and at least two C ports; When powered by dual loads, the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal of the protocol detection module so that one of the loads is in a fast charging state; the voltage conversion module adjusts its own output voltage according to the control signal of the protocol detection module so that the other load is also in a fast charging state.

9. The power supply circuit as described in claim 1, characterized in that, The power supply circuit also includes a third switch module, the protocol detection module is electrically connected to the third switch module, and the voltage conversion module is connected to the main power supply circuit through the third switch module; When under single load conditions, the protocol detection module controls the third switch module to turn off; when under multi-load conditions, the protocol detection module controls the third switch module to turn on.

10. An adapter, characterized in that, The adapter includes a plug and a power supply circuit as described in any one of claims 1 to 9, the plug being electrically connected to the AC / DC module of the power supply circuit.

11. A power supply method, characterized in that, The protocol detection module, applied in the power supply circuit as described in any one of claims 1 to 9, wherein the power supply method comprises: Obtain the power supply status of the power supply circuit; wherein, the power supply status includes single-load power supply status and multi-load power supply status; When in a single-load power supply state, the required voltage of the load is obtained, a detection signal is generated based on the required voltage, and the detection signal is sent to the voltage regulation module so that the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal and drives the single load to be in fast charging state; When in a multi-load power supply state, the required voltage of all loads is obtained, a detection signal is generated based on the required voltage of the target output port, and the detection signal is sent to the voltage regulation module so that the voltage regulation module adjusts the output voltage of the AC / DC module according to the detection signal and drives the load connected to the target output port to be in fast charging state; a control signal is generated based on the required voltage of the other output ports, and the output voltage of the voltage conversion module is adjusted to charge the loads connected to the other output ports.

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