Electronic equipment, electronic system and cross-equipment power taking method
By introducing charging/discharging and auxiliary power transmission ports and connected transmission circuits into electronic devices, the problems of complex circuits and low power supply efficiency in the prior art are solved, achieving the effects of simplified circuit structure and reduced cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-03-17
AI Technical Summary
Existing electronic devices, when simultaneously supporting external power charging, reverse power supply from external loads or energy storage devices, and power extraction from other devices, have complex circuit structures, high costs, and low power supply efficiency.
It employs a charging/discharging port, an auxiliary power transmission port, and connected first and second transmission circuits. The circuit is switched on and off by a control signal line, simplifying the circuit structure and enabling power to be drawn from multiple devices.
Reduce the number of ports, simplify the circuit structure, reduce circuit costs, and improve power supply efficiency.
Smart Images
Figure CN121689340A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of cross-device power extraction technology, and particularly to an electronic device, electronic system, and cross-device power extraction method. Background Technology
[0002] To meet diverse needs, some specific electronic devices require support for the following three functions: 1) charging the internal functional system from an external power source; 2) providing reverse power to external loads or energy storage devices; and 3) supporting power extraction from other devices. In practical applications, it has been found that current electronic devices that simultaneously support these three functions have complex overall circuit designs, high circuit costs, and low power output. Summary of the Invention
[0003] In a first aspect, this disclosure provides an electronic device, comprising:
[0004] Charging and discharging ports, auxiliary power transmission ports, and functional systems;
[0005] The first transmission circuit has one end connected to the charging / discharging port and the other end connected to the functional system, and is configured to control the connection and disconnection between the charging / discharging port and the functional system in response to the control of the signal provided by the first control signal line.
[0006] The second transmission circuit has one end connected to both the first transmission circuit and the functional system, and the other end connected to the auxiliary power transmission port. It is configured to control the connection and disconnection between the first transmission circuit and the functional system and the auxiliary power transmission port in response to the control of the signal provided by the second control signal line.
[0007] In some embodiments, the first transmission circuit is further configured to have a backflow function;
[0008] And / or, the second transmission circuit is further configured to have backflow prevention function.
[0009] In some embodiments, the first transmission circuit includes: a first MOSFET and a first transistor;
[0010] The gate of the first MOS transistor is connected to the collector of the first transistor, the source of the first MOS transistor is connected to the functional system and the second transmission circuit, and the drain of the first MOS transistor is connected to the charging and discharging port.
[0011] The base of the first transistor is connected to the first control signal line, and the emitter of the first transistor is connected to the first level supply terminal.
[0012] The first level supply terminal is configured to provide a voltage that controls the first MOSFET to be in the on state.
[0013] In some embodiments, the second transmission circuit includes: a second MOSFET, a third MOSFET, and a second transistor;
[0014] The gate of the second MOS transistor is connected to the collector of the second transistor, the source of the second MOS transistor is connected to the source of the third MOS transistor, and the drain of the second MOS transistor is connected to the auxiliary power supply port.
[0015] The gate of the third MOS transistor is connected to the collector of the second transistor, and the drain of the third MOS transistor is connected to the first transmission circuit and the functional system.
[0016] The base of the second transistor is connected to the second control signal line, and the emitter of the second transistor is connected to the second level supply terminal.
[0017] The second level supply terminal is configured to provide a voltage that controls the second MOSFET and the third MOSFET to be in the on state.
[0018] In some embodiments, the MOS transistors in the first transmission circuit and the second transmission circuit are both PMOS transistors, and the transistors in the first transmission circuit and the second transmission circuit are both NPN transistors.
[0019] In some embodiments, the electronic device further includes:
[0020] Detection port;
[0021] The detection circuit, with one end connected to the detection port and the other end connected to the functional system, is configured to detect whether the electronic device has completed a device handshake with other electronic devices.
[0022] In some embodiments, both the first control signal line and the second control signal line are connected to the functional system;
[0023] The functional system is configured to provide signals to the first control signal line and the second control signal line, respectively.
[0024] In a second aspect, embodiments of this disclosure also provide an electronic system, including: a first electronic device and a second electronic device, wherein both the first electronic device and the second electronic device employ the electronic device provided in the first aspect;
[0025] The auxiliary power transmission port of the first electronic device is connected to the auxiliary power transmission port of the second electronic device.
[0026] Thirdly, embodiments of this disclosure also provide a method for drawing power across devices, the method being based on the electronic system provided in the second aspect, the method comprising:
[0027] Within the first electronic device, the first transmission circuit, in response to the control of the signal provided by the first control signal line, enables a path to be formed between the charging / discharging port and the functional system. The second transmission circuit, in response to the control of the signal provided by the second control signal line, enables a path to be formed between the first transmission circuit and the functional system and the auxiliary power transmission port. The electrical energy provided by the charging / discharging port is transmitted to the auxiliary power transmission port through the first transmission circuit and the second transmission circuit.
[0028] Within the second electronic device, the second transmission circuit, in response to the control of a signal provided by the second control signal line, establishes a path between the first transmission circuit and the functional system and the auxiliary power transmission port. The auxiliary power transmission port of the second electronic device transmits electrical energy from the auxiliary power transmission port of the first electronic device to the functional system within the second electronic device via the second transmission circuit.
[0029] In some embodiments, the method further includes:
[0030] Within the second electronic device, the first transmission circuit, in response to the control of the signal provided by the first control signal line, establishes a path between the charging / discharging port and the functional system. The auxiliary power transmission port of the second electronic device transmits electrical energy from the auxiliary power transmission port of the first electronic device to the charging / discharging port of the second electronic device through the second transmission circuit and the first transmission circuit.
[0031] This disclosure provides an electronic device, an electronic system, and a method for drawing power across devices. The technical solution of this disclosure, while satisfying the requirements of supporting charging / discharging functions and cross-device power drawing functions, can reduce the number of ports, simplify the circuit structure, reduce circuit costs, and improve power supply efficiency. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of a circuit structure for an electronic device involved in related technologies.
[0033] Figure 2 A schematic diagram of a circuit structure of an electronic device provided in an embodiment of this disclosure;
[0034] Figure 3 A schematic diagram of another circuit structure of an electronic device provided in an embodiment of this disclosure;
[0035] Figure 4A schematic diagram of another circuit structure of an electronic device provided in an embodiment of this disclosure;
[0036] Figure 5 A schematic diagram of the structure of an electronic system provided for the implementation of this disclosure;
[0037] Figure 6 This is a schematic diagram of two electronic devices in an electronic system charging using corresponding external power sources, according to an embodiment of this disclosure.
[0038] Figure 7 This is a schematic diagram of two electronic devices in the electronic system discharging to an external load or energy storage device in an embodiment of this disclosure.
[0039] Figure 8 This is a schematic diagram of a first electronic device supplying power to a second electronic device within an electronic device according to an embodiment of this disclosure;
[0040] Figure 9 This is another schematic diagram of the first electronic device supplying power to the second electronic device in an embodiment of the present disclosure;
[0041] Figure 10 This is a flowchart illustrating a method for drawing power across devices, as provided in an embodiment of the present disclosure. Detailed Implementation
[0042] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0043] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.
[0044] In the various figures, the same elements are represented by similar reference numerals. For clarity, not all parts in the figures are drawn to scale. Furthermore, some well-known parts may not be shown in the figures.
[0045] Many specific details of this disclosure, such as the structure, materials, dimensions, or techniques of the components, are described below to provide a clearer understanding of the disclosure. However, as those skilled in the art will understand, this disclosure may be implemented without following these specific details.
[0046] Figure 1 This is a schematic diagram of a circuit structure for an electronic device involved in related technologies. For example... Figure 1 As shown, in related technologies, in order to enable electronic devices to simultaneously possess the following three functions: 1) charging the internal functional system from an external power source; 2) providing reverse power to an external load or energy storage device; and 3) supporting cross-device power extraction, three independent charging ports, discharging ports, and auxiliary power transmission ports are set up in the electronic device, along with corresponding independent (unconnected) charging circuits, discharging circuits, and cross-device power extraction circuits. Among them, the charging circuit can transmit the electrical energy provided by the external power source to the functional system, and the functional system provides its own electrical energy to the discharging port through the discharging circuit and to the auxiliary power transmission port through the cross-device power extraction circuit.
[0047] As can be seen from the above, the electronic devices involved in the related technologies require the independent design of three different transmission circuits, which makes the overall circuit structure design of the electronic devices complex and the circuit cost high. In addition, the power supply of the discharge port and the auxiliary power transmission port can only rely on the functional system within the same electronic device, which makes the power supply efficiency of the electronic devices low.
[0048] To effectively improve at least one of the technical problems existing in the above-mentioned related technologies, this disclosure provides a corresponding solution.
[0049] Figure 2 This is a schematic diagram of a circuit structure of an electronic device provided in an embodiment of this disclosure. For example... Figure 2 As shown, the electronic device includes: a charging / discharging port P1, an auxiliary power transmission port P2, a functional system 3, a first transmission circuit 1, and a second transmission circuit 2.
[0050] The charging / discharging port P1 supports both charging and discharging functions for electronic devices. Specifically, the charging / discharging port P1 can be connected to an external power source, which can charge the electronic device through the port (the external power source provides power to the electronic device); the charging / discharging port P1 can also be connected to an external load or energy storage device, which can discharge the electronic device to the external load or energy storage device through the port (the electronic device provides power to the external load or energy storage device).
[0051] The auxiliary power port P2 supports cross-device power supply functionality for electronic devices. Specifically, the electronic device can connect to other electronic devices and provide the necessary power to maintain the normal operation of the functional system 3 within those other electronic devices, or receive power from other electronic devices to maintain the normal operation of its own internal functional system 3, thus achieving cross-device power supply.
[0052] The functional system 3 within the electronic device is the system that implements various functions of the electronic device (e.g., detection, calculation, storage, etc.). It can be a pure hardware system or a system composed of hardware and software.
[0053] The first transmission circuit 1 has one end connected to the charging / discharging port P1 and the other end connected to the functional system 3. It is configured to control the connection and disconnection between the charging / discharging port P1 and the functional system 3 in response to the control of the signal provided by the first control signal line CL1.
[0054] The second transmission circuit 2 has one end connected to both the first transmission circuit 1 and the functional system 3, and the other end connected to the auxiliary power transmission port P2. It is configured to control the connection and disconnection between the first transmission circuit 1 and the functional system 3 and the auxiliary power transmission port P2 in response to the control of the signal provided by the second control signal line CL2.
[0055] In this embodiment of the present disclosure, the first transmission circuit 1 and the second transmission circuit 2 are respectively controlled by the signals provided by the corresponding control signal lines and can switch between the on state and the off state, and the first transmission circuit 1 and the second transmission circuit 2 are connected to each other.
[0056] When the first transmission circuit 1 is in an open circuit state and the second transmission circuit 2 is in an open circuit state, the functional system 3 is disconnected from both the charging / discharging port P1 and the auxiliary power transmission port P2.
[0057] When the first transmission circuit 1 is in the on state and the second transmission circuit 2 is in the off state, the functional system 3 is connected to the charging / discharging port P1, and the auxiliary power transmission port P2 of the functional system 3 is disconnected. The charging / discharging port P1 (connected to an external power source) can charge the functional system 3 through the first transmission circuit 1, or the functional system 3 can discharge to the charging / discharging port P1 (connected to an external load or energy storage device) through the first transmission circuit 1.
[0058] When the first transmission circuit 1 is in the ON state and the second transmission circuit 2 is in the ON state, there is a connection between the functional system 3 and the charging / discharging port P1, and a connection between the functional system 3 and the auxiliary power supply port P2. The charging / discharging port P1 (connected to an external power source) can charge the functional system 3 through the first transmission circuit 1 and supply power to the auxiliary power supply port P2 through the first transmission circuit 1 and the second transmission circuit 2; or, the auxiliary power supply port P2 (connected to other electronic devices, and supplied with power by other electronic devices) can supply power to the functional system 3 through the second transmission circuit 2 and discharge to the charging / discharging port P1 through the second transmission circuit 2 and the first transmission circuit 1.
[0059] When the first transmission circuit 1 is in an open state and the second transmission circuit 2 is in a closed state, the functional system 3 is disconnected from the charging / discharging port P1, and the functional system 3 is connected to the auxiliary power transmission port P2. The auxiliary power transmission port P2 (connected to other electronic devices, and supplied with power by these other electronic devices) can supply power to the functional system 3 through the second transmission circuit 2, or the functional system 3 can supply power to the auxiliary power transmission port P2 (for example, connected to other electronic devices, and these other electronic devices have no external power supply) through the second transmission circuit 2.
[0060] It should be noted that when the first transmission circuit 1 is in the conducting state and the second transmission circuit 2 is in the conducting state, the charging and discharging port P1 (connected to an external power source) can supply power to the auxiliary power transmission port P2 through the first transmission circuit 1 and the second transmission circuit 2. That is, the auxiliary power transmission port P2 can be directly supplied with power from the external power source to supply power to other electronic devices, which can effectively improve the power supply efficiency.
[0061] Compared to electronic devices in related technologies, the electronic device provided in this disclosure, while satisfying the requirements of supporting charging / discharging functions and cross-device power drawing functions, can reduce the number of ports (integrating independent charging ports and discharging ports into a single charging / discharging port P1), simplify the circuit structure (in related technologies, there are three independent circuits, while in this disclosure, it is an integrated circuit composed of a first transmission circuit 1 and a second transmission circuit 2 that are connected to each other), reduce circuit costs, and improve power supply efficiency.
[0062] The electronic devices involved in this disclosure can be any electronic device that supports charging and discharging functions, including but not limited to mobile terminals, infrared detectors, imagers, etc.
[0063] In some embodiments, the electronic device is provided with a first control port and a second control port, a first control signal line CL1 is connected to the first control port, and a second control port is connected to the second control port. The first control port and the second control port can be connected to an external control device, and the external control device provides control signals to the first control signal line CL1 and the second control signal line CL2 through the first control port and the second control port, respectively.
[0064] In other embodiments, both the first control signal line CL1 and the second control signal line CL2 are connected to the functional system 3. The functional system 3 is configured to provide control signals to the first control signal line CL1 and the second control signal line CL2 respectively (for example, the functional system 3 is manually operated to provide corresponding control signals to the control signal lines, or a control program is built into the functional system 3, which can automatically provide corresponding control signals to the control signal lines according to the user's functional requirements). Compared with the above-described scheme of setting control ports, using the functional system 3 to provide signals to the first control signal line CL1 and the second control signal line CL2 can effectively reduce the number of ports on the electronic device.
[0065] Figure 3 This is a schematic diagram of another circuit structure of the electronic device provided in an embodiment of this disclosure. For example... Figure 3 As shown, Figure 3 The electronic device shown is Figure 2 One specific alternative implementation of the electronic device shown.
[0066] In some embodiments, the first transmission circuit 1 is further configured to have a backflow prevention function; the second transmission circuit 2 is further configured to have an anti-backflow prevention function. In this embodiment of the present disclosure, by designing the first transmission circuit 1 and the second transmission circuit 2 as transmission circuits with anti-backflow prevention functions, the safety of the power supply and the functional system 3, as well as the stability of the circuit function, can be effectively guaranteed.
[0067] In some embodiments, the first transmission circuit 1 includes: a first MOS transistor MOS1 and a first transistor T1; the gate of the first MOS transistor MOS1 is connected to the collector of the first transistor T1, the source of the first MOS transistor MOS1 is connected to the functional system 3 and the second transmission circuit 2, and the drain of the first MOS transistor MOS1 is connected to the charge / discharge port P1; the base of the first transistor T1 is connected to the first control signal line CL1, and the emitter of the first transistor T1 is connected to the first level supply terminal; the first level supply terminal is configured to provide a voltage that can control the first MOS transistor MOS1 to be in the on state.
[0068] In this disclosure, the body diode of the first MOSFET MOS1 is unidirectionally turned on. When the first MOSFET MOS1 is in the off state, the body diode of the first MOSFET MOS1 can play a good role in preventing backflow.
[0069] In some embodiments, the second transmission circuit 2 includes: a second MOS transistor MOS2, a third MOS transistor MOS3, and a second transistor T2; the gate of the second MOS transistor MOS2 is connected to the collector of the second transistor T2, the source of the second MOS transistor MOS2 is connected to the source of the third MOS transistor MOS3, and the drain of the second MOS transistor MOS2 is connected to the auxiliary power supply port P2; the gate of the third MOS transistor MOS3 is connected to the collector of the second transistor T2, and the drain of the third MOS transistor MOS3 is connected to the first transmission circuit 1 and the functional system 3; the base of the second transistor T2 is connected to the second control signal line CL2, and the emitter of the second transistor T2 is connected to the second level supply terminal; the second level supply terminal is configured to provide a voltage that controls the second MOS transistor MOS2 and the third MOS transistor MOS3 to be in the on state.
[0070] It should be noted that in this disclosure, the source of the second MOSFET MOS2 is connected to the source of the third MOSFET MOS3, that is, the two MOSFETs are connected back to back; the body diodes of the second MOSFET MOS2 and the third MOSFET MOS3 are also connected back to back (reverse series), which can play a better role in preventing bidirectional backflow.
[0071] It should be noted that when the MOSFET is an NMOS transistor, a high-level voltage can control the NMOS transistor to conduct, and a low-level voltage can control the NMOS transistor to turn off. When the MOSFET is a PMOS transistor, a low-level voltage can control the PMOS transistor to conduct, and a high-level voltage can control the PMOS transistor to turn off.
[0072] In some embodiments, since the electrical energy transmitted by the first transmission circuit 1 and the second transmission circuit 2 both have a certain positive voltage value, when NMOS is used for transmission, a higher control voltage is required to control the NMOS transistor to turn on, which leads to an increase in overall power consumption. Therefore, in this disclosure, the MOS transistors in the first transmission circuit 1 and the second transmission circuit 2 are preferably PMOS transistors; at this time, the voltages provided by the first level supply terminal and the second level supply terminal are both low-level voltages (the accompanying drawings exemplarily show the case where the first level supply terminal and the second level supply terminal are grounded). Accordingly, in order to transmit the low-level voltages provided by the first level supply terminal and the second level supply terminal to the corresponding PMOS transistors more efficiently, the transistors used to transmit the low-level voltages are preferably NPN transistors (when PNP transistors transmit low-level voltages, there will be voltage loss, and a lower control voltage is required), that is, the transistors in the first transmission circuit 1 and the second transmission circuit 2 are both NPN transistors.
[0073] Figure 4 This is a schematic diagram of yet another circuit structure of an electronic device provided in an embodiment of this disclosure. For example... Figure 4 As shown, the electronic device provided in this embodiment not only includes the structure involved in the previous embodiments, but also includes: a detection port P3 and an auxiliary detection circuit 4. One end of the auxiliary detection circuit 4 is connected to the detection port P3, and the other end is connected to the functional system 3. The auxiliary detection circuit 4 is configured to detect whether the electronic device has completed a device handshake with other electronic devices (for example, whether the auxiliary power supply ports P2 of the two electronic devices have been connected).
[0074] Based on the same inventive concept, this disclosure also provides an electronic system. Figure 5 A schematic diagram of the structure of an electronic system provided for an embodiment of this disclosure. For example... Figure 5 As shown, the electronic system includes: a first electronic device and a second electronic device, both of which are electronic devices provided in the previous embodiments; the auxiliary power transmission port P2_1 of the first electronic device is connected to the auxiliary power transmission port P2_2 of the second electronic device.
[0075] For a detailed description of the first electronic device and the second electronic device, please refer to the content in the previous embodiments, which will not be repeated here.
[0076] In this electronic system, the first electronic device and the second electronic device can work independently or draw power from each other.
[0077] It should be noted that in practical applications, the auxiliary power transmission port P2_1 of the first electronic device and the auxiliary power transmission port P2_2 of the second electronic device can be directly connected, or they can be connected through a connector. Figure 5 (as shown in the illustrations), this disclosure does not impose any limitations on it.
[0078] Furthermore, when both the first electronic device and the second electronic device are equipped with detection ports P3_1 / P3_2 and auxiliary detection circuits 4_1 / 4_2, the detection ports P3_1 and P3_2 of the first electronic device can be directly connected, or they can be connected through a connector (which can be the same connector used to connect the auxiliary power transmission ports P2_1 / P2_2, or it can be a different connector). This disclosure does not impose any limitations on this.
[0079] The following description is based on the accompanying drawings. The first transmission circuit 1_1 / 1_2 includes a first MOS transistor MOS1_1 / MOS1_2 and a first transistor T1_1 / T1_2; the second transmission circuit 2_1 / 2_2 includes a second MOS transistor MOS2_1 / MOS2_2, a third MOS transistor MOS3_1 / MOS3_2, and a second transistor T2_1 / T2_2, wherein each MOS transistor is a PMOS transistor and each transistor is an NPN transistor.
[0080] Figure 6 This is a schematic diagram illustrating how two electronic devices within an electronic system in this disclosure are charged using their respective external power sources. Figure 6 As shown, the charging / discharging ports P1_1 / P1_2 of the first and second electronic devices are respectively connected to corresponding external power supplies. At this time, the first control signal line CL1_1 in the first electronic device provides an effective voltage level (high level voltage), and the second control signal line CL2_1 in the first electronic device provides an ineffective voltage level (low level voltage); the first control signal line CL1_2 in the second electronic device provides an effective voltage level, and the second control signal line CL2_2 in the second electronic device provides an ineffective voltage level. The first transistors T1_1 / T1_2 and the first MOSFETs MOS1_1 / MOS1_2 in both the first and second electronic devices are turned on, while the second transistors T2_1 / T2_2, the second MOSFETs MOS2_1 / MOS2_2, and the third MOSFETs MOS3_1 / MOS3_2 in both the first and second electronic devices are turned off.
[0081] In the first electronic device, the power supplied by the external power source connected to the charging / discharging port P1_1 charges the functional system 3_1 within the first electronic device through the first transmission circuit 1_1; in the second electronic device, the power supplied by the external power source connected to the charging / discharging port P1_2 charges the functional system 3_2 within the second electronic device through the first transmission circuit 1_2. That is, both electronic devices use their respective connected external power sources to charge their own functional systems.
[0082] Figure 7 This is a schematic diagram illustrating how two electronic devices within an electronic system discharge to an external load or energy storage device, as described in an embodiment of this disclosure. Figure 7As shown, the charging / discharging ports P1_1 / P1_2 of the first and second electronic devices are respectively connected to corresponding external loads or energy storage devices. At this time, the first control signal line CL1_1 in the first electronic device provides an effective voltage level (high level voltage), and the second control signal line CL2_1 in the first electronic device provides an ineffective voltage level (low level voltage); the first control signal line CL1_2 in the second electronic device provides an effective voltage level, and the second control signal line CL2_2 in the second electronic device provides an ineffective voltage level. The first transistors T1_1 / T1_2 and the first MOSFETs MOS1_1 / MOS1_2 in both the first and second electronic devices are turned on, while the second transistors T2_1 / T2_2, the second MOSFETs MOS2_1 / MOS2_2, and the third MOSFETs MOS3_1 / MOS3_2 in both the first and second electronic devices are turned off.
[0083] Within the first electronic device, functional system 3_1 discharges the external load or energy storage device connected to the charging / discharging port P1_1 of the first electronic device via the first transmission circuit 1_1; within the second electronic device, functional system 3_2 discharges the external load or energy storage device connected to the charging / discharging port P1_2 of the second electronic device via the first transmission circuit 1_2. That is, both electronic devices utilize their respective functional systems to discharge the external load or energy storage device.
[0084] Figure 8 This is a schematic diagram illustrating a scenario where a first electronic device supplies power to a second electronic device within an electronic device according to an embodiment of this disclosure. Figure 8 As shown, the charging / discharging port P1_1 of the first electronic device is connected to an external power supply, while the charging / discharging port P1_2 of the second electronic device is not connected to an external power supply. At this time, the first control signal line CL1_1 in the first electronic device provides an effective voltage level (high level voltage), and the second control signal line CL2_1 in the first electronic device provides an effective voltage level (high level voltage); the first control signal line CL1_2 in the second electronic device provides an ineffective voltage level (low level voltage), and the second control signal line CL2_2 in the second electronic device provides an effective voltage level (high level voltage). At this time, the first transistor T1_1, the second transistor T2_1, the first MOSFET MOS1_1, the second MOSFET MOS2_1, and the third MOSFET MOS3_1 in the first electronic device are all turned on. The first transistor T1_2 and the first MOSFET MOS1_2 in the second electronic device are turned off, but the second transistor T2_2, the second MOSFET MOS2_2, and the third MOSFET MOS3_2 are turned on.
[0085] Within the first electronic device, the power supplied by the external power source connected to the charging / discharging port P1_1 charges the functional system 3_1 within the first electronic device via the first transmission circuit 1_1. Simultaneously, the power supplied by the external power source connected to the charging / discharging port P1_1 supplies power to the auxiliary power transmission port P2_1 via the first transmission circuit 1_1 and the second transmission circuit 2_1. Within the second electronic device, its auxiliary power transmission port P2_2 receives power from the auxiliary power transmission port P2_2 of the first electronic device and transmits it to the functional system 23 via the second transmission circuit 2_2. That is, the external power source connected to the first electronic device supplies power to the functional system 3_2 of the second electronic device via the first transmission circuit 1_1, the second transmission circuit 2_1, and the second transmission circuit 2_2 of the first electronic device, thus achieving cross-device power supply.
[0086] Figure 9 This is another schematic diagram illustrating the power supply from the first electronic device to the second electronic device within an embodiment of this disclosure. For example... Figure 9 As shown, with Figure 8 The situation shown is different, Figure 9 In the scheme shown, the charging and discharging port P1_2 of the second electronic device is connected to an external load or energy storage device. The first control signal line CL1_2 in the second electronic device provides an effective level voltage (high level voltage). The first transistor T1_2 and the first MOSFET MOS1_2 in the second electronic device are both turned on.
[0087] At this time, since the first transmission circuit 1_2 in the second electronic device is in the closed state, the external power supply connected to the first electronic device can not only supply power to the functional system 3_2 of the second electronic device, but also supply power to the external load or energy storage device connected to the second electronic device through the first transmission circuit 1_1, the second transmission circuit 2_1, the second transmission circuit 2_2 and the first transmission circuit 1_2 of the second electronic device.
[0088] It should be noted that in this embodiment of the present disclosure, when the charging / discharging port P1_2 of the second electronic device is connected to an external power source, and the charging / discharging port P1_1 of the first electronic device is not connected to an external power source, based on... Figure 8 and Figure 9 Using a similar principle, the first electron is powered by an external power source connected to the second electronic device.
[0089] Furthermore, in certain special cases, it is also possible to use the functional system of one electronic device to supply power to the functional system of another electronic device. This will not be described in detail here.
[0090] Figure 10 This is a flowchart illustrating a method for drawing power across devices, as provided in an embodiment of this disclosure. Figure 10 As shown, this cross-device power extraction method is based on the aforementioned electronic system and includes:
[0091] Step a: In the first electronic device, the first transmission circuit responds to the control of the signal provided by the first control signal line to form a path between the charging / discharging port and the functional system, and the second transmission circuit responds to the control of the signal provided by the second control signal line to form a path between the first transmission circuit and the functional system and the auxiliary power transmission port, and the electrical energy provided by the charging / discharging port is transmitted to the auxiliary power transmission port through the first transmission circuit and the second transmission circuit.
[0092] Step b: In the second electronic device, the second transmission circuit, in response to the control of the signal provided by the second control signal line, enables the first transmission circuit and the functional system to form a path with the auxiliary power transmission port. The auxiliary power transmission port of the second electronic device transmits the electrical energy from the auxiliary power transmission port of the first electronic device to the functional system in the second electronic device through the second transmission circuit.
[0093] The technical solution disclosed herein does not impose any restrictions on the execution order of steps a and b above.
[0094] The first electronic device can supply power to the second electronic device through the above steps a and b. For a detailed description of steps a and b, please refer to the previous content, which will not be repeated here.
[0095] In some embodiments, step b further includes: within the second electronic device, the first transmission circuit, in response to the control of the signal provided by the first control signal line, enables a path to be formed between the charging / discharging port and the functional system, and the auxiliary power transmission port of the second electronic device transmits electrical energy from the auxiliary power transmission port of the first electronic device to the charging / discharging port of the second electronic device through the second transmission circuit and the first transmission circuit.
[0096] This corresponds to the previous Figure 9 As shown in the diagram, the first electronic device can not only supply power to the functional systems within the second electronic device, but also supply power to external loads or energy storage devices connected to the second electronic device.
[0097] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.
Claims
1. An electronic device, comprising: The electronic device comprises: a charging / discharging port, an auxiliary power supply port and a functional system; a first transmission circuit, one end of which is connected to the charging / discharging port and the other end of which is connected to the functional system, configured to control the on-off between the charging / discharging port and the functional system in response to the signal provided by the first control signal line; a second transmission circuit, one end of which is connected to both the first transmission circuit and the functional system and the other end of which is connected to the auxiliary power supply port, configured to control the on-off between the first transmission circuit, the functional system and the auxiliary power supply port in response to the signal provided by the second control signal line.
2. The electronic device of claim 1, wherein, The first transmission circuit is further configured to have a backflow function; and / or, the second transmission circuit is further configured to have an anti-backflow function.
3. The electronic device of claim 2, wherein, The first transmission circuit comprises a first MOS tube and a first transistor; the gate of the first MOS tube is connected to the collector of the first transistor, the source of the first MOS tube is connected to the functional system and the second transmission circuit, and the drain of the first MOS tube is connected to the charging / discharging port; the base of the first transistor is connected to the first control signal line, and the emitter of the first transistor is connected to a first voltage supply end; the first voltage supply end is configured to provide a voltage that can control the first MOS tube to be in a conductive state.
4. The electronic device of claim 2, wherein, The second transmission circuit comprises a second MOS tube, a third MOS tube and a second transistor; the gate of the second MOS tube is connected to the collector of the second transistor, the source of the second MOS tube is connected to the source of the third MOS tube, and the drain of the second MOS tube is connected to the auxiliary power supply port; the gate of the third MOS tube is connected to the collector of the second transistor, and the drain of the third MOS tube is connected to the first transmission circuit and the functional system; the base of the second transistor is connected to the second control signal line, and the emitter of the second transistor is connected to a second voltage supply end; the second voltage supply end is configured to provide a voltage that can control the second MOS tube and the third MOS tube to be in a conductive state.
5. The electronic device of claim 3 or 4, wherein, The MOS tubes in the first transmission circuit and the second transmission circuit are PMOS tubes, and the transistors in the first transmission circuit and the second transmission circuit are NPN transistors.
6. The electronic device of claim 1, wherein, The electronic device further comprises: a detection port; a detection circuit, one end of which is connected to the detection port and the other end of which is connected to the functional system, configured to detect whether the electronic device and other electronic devices complete device connection handshake.
7. The electronic device of claim 1, wherein, The first control signal line and the second control signal line are both connected to the functional system; The functional system is configured to provide signals to the first control signal line and the second control signal line, respectively.
8. An electronic system, characterized by The electronic device comprises: a first electronic device and a second electronic device, both of which adopt the electronic device of any one of claims 1 to 7; the auxiliary power supply port of the first electronic device is connected to the auxiliary power supply port of the second electronic device.
9. A method for cross-device power draw, the method comprising: The cross-device power taking method is based on the electronic system as claimed in claim 8, and the cross-device power taking method comprises: In the first electronic device, the first transmission circuit forms a path between the charge-discharge port and the functional system in response to a signal provided by the first control signal line, the second transmission circuit forms a path between the first transmission circuit and the functional system and the auxiliary power transmission port in response to a signal provided by the second control signal line, and the electric energy provided by the charge-discharge port is transmitted to the auxiliary power transmission port through the first transmission circuit and the second transmission circuit; In the second electronic device, the second transmission circuit forms a path between the first transmission circuit and the functional system and the auxiliary power transmission port in response to a signal provided by the second control signal line, and the auxiliary power transmission port of the second electronic device transmits the electric energy from the auxiliary power transmission port of the first electronic device to the functional system in the second electronic device through the second transmission circuit.
10. The method of claim 9, wherein, Further comprising: In the second electronic device, the first transmission circuit forms a path between the charge-discharge port and the functional system in response to a signal provided by the first control signal line, and the auxiliary power transmission port of the second electronic device transmits the electric energy from the auxiliary power transmission port of the first electronic device to the charge-discharge port of the second electronic device through the second transmission circuit and the first transmission circuit.