Port powered circuit and energy storage power supply

Abstract

This application relates to a port power supply circuit and an energy storage power supply. The port power supply circuit includes a delay switch module and a delay reset module. The delay switch module is connected between the voltage source and the transmission terminal. The control terminal of the delay switch module is connected to the output terminal of the delay reset module, and the input terminal of the delay reset module is connected to the transmission terminal. The delay reset module outputs a first-level signal as a reset signal when the voltage at the transmission terminal is greater than or equal to a preset voltage threshold for a duration exceeding a first duration, and outputs a second-level signal when the voltage at the transmission terminal is less than the preset voltage threshold. The delay switch module disconnects the connection circuit between the voltage source and the transmission terminal upon receiving the first-level signal, and connects the connection circuit when the duration of receiving the second-level signal exceeds a second duration. Using the port power supply circuit of this application can reduce the power consumption of energy storage products while improving the reliability of energy storage products for charging and powering through bidirectional ports.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, and in particular to a port power supply circuit and an energy storage power source. Background Technology

[0002] With the rapid development of energy storage products, higher requirements are being placed on the ports of these products. To improve the port reuse rate of energy storage products, the ports can be configured as bidirectional ports, which can connect to both power supply equipment and power consumption equipment.

[0003] Due to safety regulations, when connecting electrical equipment to a bidirectional port, the energy storage product needs to communicate with the electrical equipment before allowing the power supply module to transmit power to the bidirectional port so that the electrical equipment can be powered.

[0004] However, before the power supply module supplies power to the bidirectional port, the electrical equipment cannot receive power, which prevents it from communicating with the energy storage product. Consequently, the power supply module of the energy storage product will not supply power to the bidirectional port, thus preventing the energy storage product from supplying power to the electrical equipment connected to the bidirectional port. Summary of the Invention

[0005] Based on this, this application provides a port power supply circuit and an energy storage power supply, which can reduce the power consumption of energy storage products while improving the reliability of energy storage products for charging and power supply through bidirectional ports.

[0006] In a first aspect, this application provides a port power supply circuit applied to a power supply device. The power supply device has a bidirectional port power transmission terminal for connecting to an external device. The port power supply circuit includes a delay switch module and a delay reset module. The input terminal of the delay switch module is connected to a voltage source, the output terminal of the delay switch module is connected to the power transmission terminal, the control terminal of the delay switch module is connected to the output terminal of the delay reset module, and the input terminal of the delay reset module is connected to the power transmission terminal.

[0007] The delayed reset module is used to output a first-level signal as a reset signal when the voltage at the power transmission end is greater than or equal to a preset voltage threshold for a period of time exceeding a first time, and to output a second-level signal when the voltage at the power transmission end is less than the preset voltage threshold; the first time is greater than or equal to the time between the power consumption device receiving power and sending the adaptation completion signal when the external device is an electrical device.

[0008] The delay switch module is used to disconnect the connection circuit between the voltage source and the transmission terminal when a first level signal is received, and to connect the connection circuit when the duration of receiving the second level signal exceeds a second duration.

[0009] In some embodiments, the delay switch module includes a first delay unit and a power output unit; the control terminal of the first delay unit is connected to the output terminal of the delay reset module and a voltage source, the input terminal of the first delay unit is connected to the voltage source, the output terminal of the first delay unit is connected to the control terminal of the power output unit, the input terminal of the power output unit is connected to the voltage source, and the output terminal of the power output unit is connected to the power transmission terminal.

[0010] The first delay unit is used to output a first trigger signal when a first level signal is received, and to output a second trigger signal when the duration of receiving the second level signal exceeds a second duration;

[0011] The power output unit is used to disconnect the connection circuit when a first trigger signal is received, and to turn on the connection circuit when a second trigger signal is received.

[0012] In some embodiments, the first delay unit includes a bypass subunit and a delay subunit; the control terminal of the bypass subunit is connected to the output terminal of the delay reset module and the voltage source, the bypass terminal of the bypass subunit is connected to the voltage source and the input terminal of the delay subunit, and the output terminal of the delay subunit is connected to the control terminal of the power output unit.

[0013] The bypass subunit is used to open the power release path when the first level signal is received, so that the power output of the voltage source is bypassed; and to open the power release path when the second level signal is received, so that the voltage source supplies power to the delay subunit.

[0014] The delay subunit is used to output a first trigger signal when no electrical energy is received or when the duration of the received electrical energy does not exceed a second duration, and to output a second trigger signal when the duration of the received electrical energy exceeds the second duration.

[0015] In some embodiments, the bypass subunit includes a first switch, and the delay subunit includes a first capacitor and a first Zener diode;

[0016] The control terminal of the first switch is connected to the output terminal of the delayed reset module and the voltage source respectively. The first conducting terminal of the first switch is connected to the voltage source and the first terminal of the first capacitor respectively. The second conducting terminal of the first switch is grounded.

[0017] The first terminal of the first capacitor is also connected to the cathode of the first Zener diode, the second terminal of the first capacitor is grounded, and the anode of the first Zener diode is connected to the control terminal of the power output unit.

[0018] In some embodiments, the power output unit includes a signal output subunit and a switch subunit; the input terminal of the signal output subunit is connected to the output terminal of the first delay unit, the output terminal of the signal output subunit is connected to the control terminal of the switch subunit, the first conducting terminal of the switch subunit is connected to a voltage source, and the second conducting terminal of the switch subunit is connected to a power transmission terminal.

[0019] The signal output subunit is used to output a disconnect signal when a first trigger signal is received, and to output a turn-on signal when a second trigger signal is received.

[0020] The switching subunit is used to disconnect the connection circuit when a disconnect signal is received, and to connect the connection circuit when a conduction signal is received.

[0021] In some embodiments, the signal output subunit includes a second switch, and the switch subunit includes a third switch, a first resistor, and a diode;

[0022] The control terminal of the second switch is connected to the output terminal of the first delay unit, the first conducting terminal of the second switch is connected to the control terminal of the third switch, and the second conducting terminal of the second switch is grounded.

[0023] The first conducting terminal of the third switch is connected to the voltage source, the second conducting terminal of the third switch is connected to the anode of the diode, and the cathode of the diode is connected to the power transmission terminal.

[0024] The first end of the first resistor is connected to the first conducting end of the third switch, and the second end of the first resistor is connected to the control end of the third switch.

[0025] In some embodiments, the delay reset module includes a second delay unit and a reset unit; the input terminal of the second delay unit is connected to the power transmission terminal, the output terminal of the second delay unit is connected to the input terminal of the reset unit, and the output terminal of the reset unit is connected to the control terminal of the delay switch module.

[0026] The second delay unit is used to output a third trigger signal when the voltage at the transmission end is greater than or equal to a preset voltage threshold for a period of time exceeding a first duration, and to output a fourth trigger signal when the voltage at the transmission end is less than the preset voltage threshold.

[0027] The reset unit is used to output a first-level signal when a third trigger signal is received, and to output a second-level signal when a fourth trigger signal is received.

[0028] In some embodiments, the second delay unit includes a second resistor, a second capacitor, and a second Zener diode;

[0029] The first end of the second resistor is connected to the power transmission end, and the second end of the second resistor is grounded.

[0030] The first terminal of the second capacitor is connected to the first terminal of the second resistor and the cathode of the second Zener diode, and the second terminal of the second capacitor is grounded.

[0031] The anode of the second Zener diode is connected to the input terminal of the reset unit.

[0032] In some embodiments, the reset unit includes a fourth switch and a fifth switch;

[0033] The control terminal of the fourth switch is connected to the output terminal of the second delay unit, the first conducting terminal of the fourth switch is connected to the control terminal of the delay switch module, and the second conducting terminal of the fourth switch is grounded.

[0034] The control terminal of the fifth switch is connected to the first conducting terminal of the fourth switch, the first conducting terminal of the fifth switch is connected to the power transmission terminal, and the second conducting terminal of the fifth switch is connected to the control terminal of the fourth switch.

[0035] In some embodiments, the first duration is shorter than the second duration.

[0036] Secondly, this application provides an energy storage power supply, including a power supply device and a port power supply circuit of any one of the first aspects connected to the transmission terminal of the bidirectional port of the power supply device.

[0037] In some embodiments, the power supply device includes an energy storage module, a communication module, and a bidirectional port. A first end of the energy storage module is connected to the communication module, and a second end of the energy storage module is connected to the power transmission end of the bidirectional port through a main power supply circuit.

[0038] If the external device connected to the power transmission end is an electrical device, the duration for which the delay switch module of the port power supply circuit conducts the connection circuit is the first duration. During the conduction period of the connection circuit, the communication module receives the adaptation completion signal of the electrical device and outputs a start signal to the energy storage module. When the energy storage module receives the start signal, it supplies power to the electrical device through the main power supply circuit.

[0039] During the period when the energy storage module supplies power to the electrical equipment through the main power supply circuit, the voltage at the transmission end is continuously greater than or equal to the preset voltage threshold, and the connection circuit between the voltage source and the transmission end is continuously disconnected.

[0040] In some embodiments, the power supply device includes an energy storage module and a bidirectional port, wherein the energy storage module is connected to the power transmission end of the bidirectional port through a main power supply circuit;

[0041] If the external device connected to the power transmission terminal is a power supply device, and the voltage at the power transmission terminal is continuously greater than or equal to the preset voltage threshold, the connection circuit between the voltage source and the power transmission terminal is continuously disconnected, and the power supply device supplies power to the energy storage module through the main power supply circuit.

[0042] In some embodiments, if the power transmission end is not connected to an external device, the port power supply circuit periodically turns on the connection circuit.

[0043] In the technical solution provided in this application embodiment, the delayed reset module outputs a first-level signal when the voltage at the transmission end is greater than or equal to a preset voltage threshold for a duration exceeding a first duration, and outputs a second-level signal when the voltage at the transmission end is less than the preset voltage threshold. When the delayed switch module receives the first-level signal, it disconnects the connection circuit between the voltage source and the transmission end. When the duration of receiving the second-level signal exceeds a second duration, it connects the connection circuit. In this way, when the external device connected to the transmission end is a power supply device, the charging reliability of the energy storage module in the power supply device is improved; when the external device connected to the transmission end is a power consumption device, the reliability of power supply to the power consumption device is improved; and when no external device is connected to the transmission end, the power consumption of the energy storage product can be reduced. Thus, while reducing the power consumption of the energy storage product, the reliability of the energy storage product for charging and power supply through the bidirectional port is improved. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 A schematic diagram of the port power supply circuit provided in the first embodiment;

[0046] Figure 2 A schematic diagram of the port power supply circuit provided in the second embodiment;

[0047] Figure 3 A schematic diagram of the port power supply circuit provided in the third embodiment;

[0048] Figure 4 A schematic diagram of the port power supply circuit provided in the fourth embodiment;

[0049] Figure 5 A schematic diagram of the port power supply circuit provided in the fifth embodiment;

[0050] Figure 6 A schematic diagram of the port power supply circuit provided in the sixth embodiment;

[0051] Figure 7 A schematic diagram of the energy storage power supply provided in the first embodiment;

[0052] Figure 8 A schematic diagram of the energy storage power supply provided in the second embodiment;

[0053] Figure 9A schematic diagram of the energy storage power supply provided in the third embodiment. Detailed Implementation

[0054] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0056] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined. In the description of the embodiments of this application, "each" means each of the multiple options, unless otherwise explicitly defined.

[0057] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0058] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] Energy storage products often have multiple ports. Some ports are used to connect to power supply equipment, enabling the power supply equipment to supply power to the energy storage modules in the energy storage product. Other ports are used to connect to electrical devices, enabling the energy storage modules in the energy storage product to supply power to the electrical devices. Due to the large number of ports in energy storage products, technicians realized that if at least one port in the energy storage product were a bidirectional port, it could connect to both power supply equipment and electrical devices. This would be very significant in terms of both reducing the number of ports in the energy storage product and improving the flexibility of port usage.

[0061] Due to safety regulations, when connecting electrical equipment to a bidirectional port, the energy storage product needs to communicate with the electrical equipment before allowing the power supply module to transmit power to the bidirectional port so that the electrical equipment can be powered.

[0062] However, before the power supply module can supply power to the bidirectional port, the electrical equipment cannot receive power, preventing it from communicating with the energy storage product. Consequently, the energy storage product's power supply module will not supply power to the bidirectional port, thus preventing the energy storage product from supplying power to the connected electrical equipment. Therefore, for safety reasons, the possibility of using the port as a bidirectional port is restricted.

[0063] This application proposes a port power supply circuit that, when the port in the energy storage power supply is used as a bidirectional port, not only can the power supply device supply power to the energy storage module in the energy storage power supply when the bidirectional port is connected to the power supply device, but the energy storage module in the energy storage power supply can also supply power to the power consumption device when the bidirectional port is connected to the power consumption device. Furthermore, when the bidirectional port is unconnected, the power consumption of the energy storage product can be reduced. Thus, while reducing the power consumption of the energy storage product, the reliability of the energy storage product for charging and power supply through the bidirectional port is improved.

[0064] Figure 1 A schematic diagram of the port power supply circuit provided in the first embodiment is shown below. Figure 1As shown, the port power supply circuit is applied to a power supply device. The power supply device has a bidirectional port for power transmission, which is used to connect to external devices. The port power supply circuit includes a delay switch module and a delay reset module. The input terminal of the delay switch module is connected to the voltage source VCC_I, the output terminal of the delay switch module is connected to the power transmission terminal, the control terminal of the delay switch module is connected to the output terminal of the delay reset module, and the input terminal of the delay reset module is connected to the power transmission terminal.

[0065] The delayed reset module is used to output a first-level signal as a reset signal when the voltage at the transmission end is greater than or equal to a preset voltage threshold for a period exceeding a first duration, and to output a second-level signal when the voltage at the transmission end is less than the preset voltage threshold. The first duration is greater than or equal to the duration from the time the external device is powered on to the time it sends the adaptation completion signal when the external device is a power-consuming device.

[0066] The delay switch module is used to disconnect the connection circuit between the voltage source VCC_I and the transmission terminal when a first level signal is received, and to connect the connection circuit when the duration of receiving the second level signal exceeds a second duration.

[0067] For example, the power supply device includes an energy storage module and a bidirectional port, the energy storage module being connected to the power transmission terminal of the bidirectional port. For example, the energy storage module includes a battery and a battery management circuit, a first terminal of the battery management circuit being connected to the battery, and a second terminal of the battery management circuit being connected to the power transmission terminal.

[0068] The power transmission terminal can be a terminal in a bidirectional port used for power transmission. When the bidirectional port is connected to an external device, the power transmission terminal is connected to the external device; when the bidirectional port is not connected to an external device, the power transmission terminal is not connected to the external device.

[0069] For example, external devices may include power supply equipment or electrical appliances. Power supply equipment refers to equipment used to provide electrical energy; for example, power supply equipment may include photovoltaic modules, wind power generation equipment, power grids, vehicles, or batteries. Electrical appliances refer to equipment that uses electrical energy to operate; for example, electrical appliances may include computers, vehicles, home appliances, or lighting equipment.

[0070] For example, the preset voltage threshold can be a value greater than 0V. For instance, the preset voltage threshold can be 1V, 2V, 3V, 10V, or 15V. When the voltage at the transmission end is greater than or equal to the preset voltage threshold, it indicates that electrical energy is being transmitted at the transmission end. When the voltage at the transmission end is less than the preset voltage threshold, it indicates that electrical energy is not being transmitted at the transmission end.

[0071] The delayed reset module outputs a first level signal at the first moment, wherein the first moment is the moment when the voltage at the power transmission end switches from less than a preset voltage threshold to greater than or equal to the preset voltage threshold and is spaced out by a first time interval.

[0072] The delay switch module is turned on at a second time, where the second time is the time interval from the moment the first level signal is received to the moment the second level signal is received.

[0073] When the connection circuit between the voltage source VCC_I and the power transmission terminal is turned on, the power transmission terminal outputs a hiccup signal, which is a high-voltage signal used to supply power to external devices.

[0074] The first duration refers to the duration of the hiccup signal, which is the high-voltage signal output by the power transmission terminal for the first duration. Since the first duration is greater than or equal to the duration from the moment the external device is powered on to the moment it sends the adaptation completion signal, when the external device connected to the power transmission terminal is the power user, since the voltage source VCC_I supplies power to the power user through the power transmission terminal, after the power user sends the adaptation completion signal to the energy storage module, the energy storage module determines that the energy storage product and the power user are successfully adapted. The energy storage module then takes over the power supply from the voltage source VCC_I to the power user, thus realizing the power supply to the power user.

[0075] The first level signal is a reset signal used to reset the state of the delay switch module. For example, the first level signal is used to reset the delay switch module to a state where the connection circuit between the voltage source and the transmission terminal is disconnected. Exemplarily, the logic states of the first level signal and the second level signal are opposite. In this embodiment, the first level signal is a low level signal and the second level signal is a high level signal. In other embodiments, the first level signal is a high level signal and the second level signal is a low level signal.

[0076] The delay switch module switches to the connection circuit between the voltage source VCC_I and the power transmission terminal at intervals of two time periods, starting from the moment it receives the first level signal and switches to the moment it receives the second level signal.

[0077] The second duration controls the interval between hiccup signals, i.e., the duration during which the power transmission end stops outputting a high-voltage signal; that is, the output end no longer outputs a high-voltage signal within the second duration. A longer second duration results in a longer interval between hiccup signals, reducing the power consumption of the energy storage product. Conversely, a shorter second duration results in a shorter interval between hiccup signals, improving the response speed of the electrical equipment.

[0078] The following explains the working principle of the port power supply circuit in the embodiments of this application:

[0079] When the external device connected to the power transmission end is a power supply device, since the power supply device supplies power to the energy storage module through the power transmission end, the voltage at the power transmission end is continuously greater than or equal to the preset voltage threshold. In this way, the delay switch module disconnects the connection circuit between the voltage source VCC_I and the power transmission end, avoiding any impact on the power supply device supplying power to the energy storage module through the power transmission end, thereby improving the charging reliability of the energy storage module in the power supply device.

[0080] When the external device connected to the power transmission end is an electrical device, the delay switch module periodically turns on the connection circuit between the voltage source VCC_I and the power transmission end, thereby periodically outputting electrical energy in the form of a hiccup signal. After the electrical device obtains the electrical energy, it will adapt to the energy storage product. When the electrical device and the energy storage product have completed the adaptation, the electrical device sends an adaptation completion signal to the energy storage product. When the energy storage product receives the adaptation completion signal, it controls the energy storage module to supply power to the electrical device through the power transmission end. When the energy storage module supplies power to the electrical device through the power transmission end, the voltage at the power transmission end is continuously greater than or equal to a preset voltage threshold. In this way, the delay switch module disconnects the connection circuit between the voltage source VCC_I and the power transmission end, avoiding any impact on the energy storage module's power supply to the electrical device through the power transmission end, thus improving the reliability of power supply to the electrical device.

[0081] When no external equipment is connected to the power transmission end, the delay switch module periodically turns on the connection circuit between the voltage source VCC_I and the power transmission end. The duration of each turn on the connection circuit between the voltage source VCC_I and the power transmission end is the first duration. In this way, the power transmission end outputs a high voltage signal (i.e., a hiccup signal) every second duration, and the duration of each hiccup signal output is the first duration. This not only avoids the problem of high power consumption of energy storage products caused by a continuous high voltage signal from the power transmission end, but also avoids the situation where the power supply to the device is interrupted when the power transmission end is not outputting a high-level signal, resulting in the device not receiving power. Thus, the reliability of power supply to the device is improved while the power consumption of the energy storage product is reduced.

[0082] In the technical solution provided in this application embodiment, the delayed reset module outputs a first-level signal when the voltage at the transmission end is greater than or equal to a preset voltage threshold for a duration exceeding a first duration, and outputs a second-level signal when the voltage at the transmission end is less than the preset voltage threshold. When the delayed switch module receives the first-level signal, it disconnects the connection circuit between the voltage source and the transmission end. When the duration of receiving the second-level signal exceeds a second duration, it connects the connection circuit. In this way, when the external device connected to the transmission end is a power supply device, the charging reliability of the energy storage module in the power supply device is improved; when the external device connected to the transmission end is a power consumption device, the reliability of power supply to the power consumption device is improved; and when no external device is connected to the transmission end, the power consumption of the energy storage product can be reduced. Thus, while reducing the power consumption of the energy storage product, the reliability of the energy storage product for charging and power supply through the bidirectional port is improved.

[0083] Figure 2 A schematic diagram of the port power supply circuit provided in the second embodiment is shown below. Figure 2 As shown, Figure 2 Compared to the example Figure 1 The embodiment also has the following technical features: the delay switch module includes a first delay unit and a power output unit; the control terminal of the first delay unit is connected to the output terminal of the delay reset module and the voltage source VCC_I respectively, the input terminal of the first delay unit is connected to the voltage source VCC_I, the output terminal of the first delay unit is connected to the control terminal of the power output unit, the input terminal of the power output unit is connected to the voltage source VCC_I, and the output terminal of the power output unit is connected to the power transmission terminal.

[0084] The first delay unit is used to output a first trigger signal when a first level signal is received, and to output a second trigger signal when the duration of receiving the second level signal exceeds a second duration.

[0085] The power output unit is used to disconnect the connection circuit when a first trigger signal is received, and to turn on the connection circuit when a second trigger signal is received.

[0086] The first trigger signal is a signal that triggers the connection circuit to disconnect, and the second trigger signal is a signal that triggers the connection circuit to connect. Exemplarily, the voltage of the second trigger signal is greater than or equal to the threshold voltage for turning on the switch in the power output unit. Exemplarily, the logic states of the first and second trigger signals are opposite. In this embodiment, the first trigger signal is a low-level signal, and the second trigger signal is a high-level signal. In other embodiments, the first trigger signal is a high-level signal, and the second trigger signal is a low-level signal.

[0087] In the technical solution provided in this application embodiment, the delay switch module is divided into two independent functional units: a first delay unit and a power output unit. This separates the delay control from the power on / off function. The first delay unit focuses on processing the delay logic of the second level signal and outputs the second trigger signal. The power output unit then executes the conduction of the connection circuit according to the second trigger signal. This functional division allows the adjustment of the delay parameters and the design of the power path to be carried out separately. It facilitates the flexible selection or replacement of the specific implementation methods of the delay unit and the power output unit according to different application scenarios. At the same time, it reduces the mutual interference between the control signal and the power signal, which helps to improve the stability of the circuit operation.

[0088] The first delay unit and the power output unit are described below. It should be noted that in other embodiments, the first delay unit may be a first programmable delay unit. It should also be noted that in other embodiments, the power output unit may be a first control switch.

[0089] Figure 3 A schematic diagram of the port power supply circuit provided in the third embodiment is shown below. Figure 3 As shown, Figure 3 Compared to the example Figure 2 The embodiment also has the following technical features: the first delay unit includes a bypass subunit and a delay subunit; the control terminal of the bypass subunit is connected to the output terminal of the delay reset module and the voltage source VCC_I respectively, the bypass terminal of the bypass subunit is connected to the voltage source VCC_I and the input terminal of the delay subunit respectively, and the output terminal of the delay subunit is connected to the control terminal of the power output unit.

[0090] The bypass subunit is used to open the power release path when the first level signal is received, so that the power output of the voltage source VCC_I is bypassed, and to open the power release path when the second level signal is received, so that the voltage source VCC_I supplies power to the delay subunit.

[0091] The delay subunit is used to output a first trigger signal when no electrical energy is received or when the duration of the received electrical energy does not exceed a second duration, and to output a second trigger signal when the duration of the received electrical energy exceeds the second duration.

[0092] In the bypass subunit, one end of the power release path is connected to the voltage source VCC_I, and the other end is grounded, so that when the power release path is on, the power output of the voltage source VCC_I is bypassed, and when the power release path is off, the voltage source VCC_I supplies power to the delay subunit.

[0093] In some embodiments, the delay subunit may include an energy storage element, with a first terminal of the energy storage element connected to one end of the energy release path and a second terminal of the energy storage element grounded. Thus, when the energy release path is open, the energy stored in the energy storage element can be released, enabling the output of a second trigger signal when the duration of the received energy exceeds a second duration.

[0094] In the technical solution provided by this application embodiment, the first delay unit is divided into a bypass subunit and a delay subunit, and the physical connection relationship and control logic of the two are clearly defined. The bypass subunit is used to open and close the power release path to control the output of the first trigger signal or the second trigger signal of the delay subunit. This structural division makes the output of the first trigger signal or the second trigger signal of the delay subunit depend on whether there is a continuous power supply at its input terminal, rather than relying solely on the switching of signal logic levels. In this way, the delay subunit outputs the first trigger signal when it does not receive power or when the power duration does not exceed the second duration. Since the delay subunit relies on the continuous accumulation of power to trigger the second trigger signal, a brief voltage fluctuation is not enough to charge the first capacitor to the breakdown voltage of the Zener diode, so there will be no false triggering, thereby reducing the risk of false triggering caused by voltage fluctuations. It also realizes that when the duration of receiving the second level signal exceeds the second duration, the second trigger signal is output to conduct the connection circuit, thereby improving the reliability of the periodic conduction connection circuit.

[0095] In some embodiments, the bypass subunit includes a first switch Q1, the control terminal of the first switch Q1 is connected to the output terminal of the delay reset module and the voltage source VCC_I, the first conducting terminal of the first switch Q1 is connected to the voltage source VCC_I and the input terminal of the delay subunit, and the second conducting terminal of the first switch Q1 is grounded.

[0096] In some embodiments, the delay subunit includes a first capacitor C1 and a first Zener diode ZD1; the first end of the first capacitor C1 is connected to the bypass terminal of the bypass subunit and the cathode of the first Zener diode ZD1, the second end of the first capacitor C1 is grounded, and the anode of the first Zener diode ZD1 is connected to the control terminal of the power output unit.

[0097] In some embodiments, the bypass subunit includes a first switch Q1, and the delay subunit includes a first capacitor C1 and a first Zener diode ZD1. The control terminal of the first switch Q1 is connected to the output terminal of the delay reset module and the voltage source VCC_I, respectively. The first conducting terminal of the first switch Q1 is connected to the voltage source VCC_I and the first terminal of the first capacitor C1, respectively. The second conducting terminal of the first switch Q1 is grounded. The first terminal of the first capacitor C1 is also connected to the cathode of the first Zener diode ZD1. The second terminal of the first capacitor C1 is grounded. The anode of the first Zener diode ZD1 is connected to the control terminal of the power output unit.

[0098] For example, the first switch Q1 includes a P-type transistor, the base of the P-type transistor is the control terminal of the first switch Q1, the emitter of the P-type transistor is the first conducting terminal of the first switch Q1, and the collector of the P-type transistor is the second conducting terminal of the first switch Q1.

[0099] For example, when the charging time of the first capacitor C1 exceeds the second duration, the voltage at the first terminal of the first capacitor C1 is greater than or equal to the breakdown voltage of the first Zener diode ZD1, causing the first Zener diode ZD1 to break down, and the anode of the first Zener diode ZD1 outputs a second trigger signal. When the charging time of the first capacitor C1 does not exceed the second duration, the voltage at the first terminal of the first capacitor C1 is less than the breakdown voltage of the first Zener diode ZD1, the first Zener diode ZD1 will not break down, and the anode of the first Zener diode ZD1 outputs a first trigger signal.

[0100] Continue reading Figure 3 The power output unit includes a signal output subunit and a switch subunit; the input terminal of the signal output subunit is connected to the output terminal of the first delay unit, the output terminal of the signal output subunit is connected to the control terminal of the switch subunit, the first conducting terminal of the switch subunit is connected to the voltage source VCC_I, and the second conducting terminal of the switch subunit is connected to the power transmission terminal.

[0101] The signal output subunit is used to output a disconnect signal when a first trigger signal is received, and to output a conduction signal when a second trigger signal is received; the switch subunit is used to disconnect the connection circuit when a disconnect signal is received, and to conduct the connection circuit when a conduction signal is received.

[0102] For example, the on signal is a high-level signal, and the off signal is a low-level signal.

[0103] In the technical solution provided in this application embodiment, the signal output subunit outputs a disconnect signal when it receives a first trigger signal, and outputs a conduction signal when it receives a second trigger signal; the switch subunit disconnects the connection circuit when it receives a disconnect signal, and conducts the connection circuit when it receives a conduction signal, so that the signal link and the power link are independent of each other. The signal output subunit focuses on generating the conduction or disconnection signal, and the switch subunit focuses on the conduction and disconnection of the power path. Each subunit can perform parameter matching and device selection according to its own functional characteristics, which enhances the flexibility of circuit design and reduces the mutual influence between the signal link and the power link.

[0104] In some embodiments, the signal output subunit includes a second switch Q2; the control terminal of the second switch Q2 is connected to the output terminal of the first delay unit, the first conducting terminal of the second switch Q2 is connected to the control terminal of the switch subunit, and the second conducting terminal of the second switch Q2 is grounded.

[0105] For example, the second switch Q2 is an N-type transistor.

[0106] In some embodiments, the switching subunit includes a third switch Q3 and a first resistor R1; the control terminal of the third switch Q3 is connected to the output terminal of the signal output subunit, the first conducting terminal of the third switch Q3 is connected to the voltage source VCC_I, and the second conducting terminal of the third switch Q3 is connected to the power transmission terminal; the first terminal of the first resistor R1 is connected to the first conducting terminal of the third switch Q3, and the second terminal of the first resistor R1 is connected to the control terminal of the third switch Q3.

[0107] For example, the third switch Q3 is a P-type transistor.

[0108] In this embodiment, the signal output subunit includes a second switch Q2, and the switch subunit includes a third switch Q3, a first resistor R1, and a diode. The control terminal of the second switch Q2 is connected to the output terminal of the first delay unit, the first conducting terminal of the second switch Q2 is connected to the control terminal of the third switch Q3, and the second conducting terminal of the second switch Q2 is grounded. The first conducting terminal of the third switch Q3 is connected to the voltage source VCC_I, the second conducting terminal of the third switch Q3 is connected to the anode of the diode, and the cathode of the diode is connected to the power transmission terminal. The first terminal of the first resistor R1 is connected to the first conducting terminal of the third switch Q3, and the second terminal of the first resistor R1 is connected to the control terminal of the third switch Q3.

[0109] Continue reading Figure 3 In some embodiments, the bypass subunit further includes a third resistor R3 and a fourth resistor R4; the first end of the third resistor R3 is connected to the voltage source VCC_I, and the second end of the third resistor R3 is connected to the first conducting end of the first switch Q1; the first end of the fourth resistor R4 is connected to the voltage source VCC_I, and the second end of the fourth resistor R4 is connected to the control end of the first switch Q1.

[0110] Continue reading Figure 3 In some embodiments, the signal output subunit further includes a fifth resistor R5 and a sixth resistor R6; the first end of the fifth resistor R5 is connected to the control terminal of the second switch Q2, and the second end of the fifth resistor R5 is grounded; the first end of the sixth resistor R6 is connected to the first conducting terminal of the second switch Q2, and the second end of the sixth resistor R6 is connected to the control terminal of the switch subunit.

[0111] Continue reading Figure 3 In some embodiments, the switching subunit further includes a diode D; the anode of diode D is connected to the second conducting terminal of the third switch Q3, and the cathode of diode D is connected to the transmission terminal. By setting diode D, reverse power transmission from the transmission terminal to the voltage source VCC_I can be prevented.

[0112] The following combination Figure 3This application describes the working principle of the delay switch module in this embodiment: when it receives the first level signal, it disconnects the connection circuit between the voltage source VCC_I and the transmission terminal; when the duration of receiving the second level signal exceeds the second duration, it connects the connection circuit.

[0113] When the delay switch module receives the first level signal (low level signal), that is, when the control terminal of the first switch Q1 (i.e., the base of the P-type transistor) receives the first level signal (low level signal), the first switch Q1 turns on, thereby opening the energy release path, bypassing the voltage output from the voltage source VCC_I, and releasing the energy stored in the first capacitor C1. Thus, the first Zener diode ZD1 is not broken down. The control terminal of the second switch Q2 (i.e., the base of the N-type transistor) receives the first trigger signal, that is, the signal at the control terminal of the second switch Q2 is a low level signal, and the second switch Q2 turns off. The voltage at the control terminal of the third switch Q3 (i.e., the base of the P-type transistor) is high, and the third switch Q3 turns off. Therefore, when the delay switch module receives the first level signal, it disconnects the connection circuit between the voltage source VCC_I and the power transmission terminal.

[0114] When the delay switch module receives the second level signal (high level signal), that is, when the control terminal of the first switch Q1 (i.e., the base of the P-type transistor) receives the second level signal, the first switch Q1 opens, thus breaking the power release path. Voltage source VCC_I charges the first capacitor C1. When the voltage at the first terminal of the first capacitor C1 is greater than or equal to the breakdown voltage of the first Zener diode ZD1, the first Zener diode ZD1 breaks down. The control terminal of the second switch Q2 (i.e., the base of the N-type transistor) receives the second trigger signal, that is, the signal at the control terminal of the second switch Q2 is a high level signal, and the second switch Q2 turns on. The control terminal of the third switch Q3 (i.e., the base of the P-type transistor) is pulled down to ground through the sixth resistor R6 and the turned-on second switch Q2. The voltage at the control terminal of the third switch Q3 is lower than the emitter voltage, which can drive the third switch Q3 to turn on. Thus, when the delay switch module receives the second level signal, it connects the voltage source VCC_I to the power transmission terminal.

[0115] Figure 4 A schematic diagram of the port power supply circuit provided in the fourth embodiment is shown below. Figure 4 As shown, Figure 4 Compared to the example Figure 1 The embodiment also has the following technical features: the delay reset module includes a second delay unit and a reset unit; the input terminal of the second delay unit is connected to the power transmission terminal, the output terminal of the second delay unit is connected to the input terminal of the reset unit, and the output terminal of the reset unit is connected to the control terminal of the delay switch module.

[0116] The second delay unit is used to output a third trigger signal when the voltage at the transmission end is greater than or equal to a preset voltage threshold for a period of time exceeding a first duration, and to output a fourth trigger signal when the voltage at the transmission end is less than the preset voltage threshold.

[0117] The reset unit is used to output a first-level signal when a third trigger signal is received, and to output a second-level signal when a fourth trigger signal is received.

[0118] For example, the logic states of the third trigger signal and the fourth trigger signal are opposite. For example, the third trigger signal is a high-level signal and the fourth trigger signal is a low-level signal. In other embodiments of this application, the third trigger signal is a low-level signal and the fourth trigger signal is a high-level signal.

[0119] In the technical solution provided in this application embodiment, the delay reset module is divided into two independent functional units: a second delay unit and a reset unit. This separates the delay detection and reset output functions. The second delay unit is used to detect voltage changes at the power transmission end and output a third trigger signal based on the voltage threshold and delay logic. The reset unit performs the generation and output of a first level signal based on the third trigger signal. This functional division allows the adjustment of delay parameters and the design of the reset circuit to be carried out separately. It facilitates the flexible selection or replacement of the second delay unit and the reset unit according to different application scenarios. At the same time, it reduces the mutual interference between the delay detection link and the reset output link, which helps to improve the stability and reliability of the circuit operation.

[0120] The second delay unit and the reset unit are described below. It should be noted that in other embodiments, the second delay unit may be a second programmable delay unit. It should also be noted that in other embodiments, the reset unit may be a second control switch.

[0121] Figure 5 A schematic diagram of the port power supply circuit provided in the fifth embodiment is shown below. Figure 5 As shown, Figure 5 Compared to the example Figure 4 The embodiment also has the following technical features: the second delay unit includes a second resistor R2, a second capacitor C2, and a second Zener diode ZD2; the first end of the second resistor R2 is connected to the power transmission terminal, and the second end of the second resistor R2 is grounded; the first end of the second capacitor C2 is connected to the first end of the second resistor R2 and the cathode of the second Zener diode ZD2, and the second end of the second capacitor C2 is grounded; the anode of the second Zener diode ZD2 is connected to the input terminal of the reset unit.

[0122] For example, when the charging time of the second capacitor C2 exceeds the first duration, the voltage at the first terminal of the second capacitor C2 is greater than or equal to the breakdown voltage of the second Zener diode ZD2, causing the second Zener diode ZD2 to break down, and the anode of the second Zener diode ZD2 outputs a third trigger signal. When the charging time of the second capacitor C2 does not exceed the first duration, the voltage at the first terminal of the second capacitor C2 is less than the breakdown voltage of the second Zener diode ZD2, the second Zener diode ZD2 will not break down, and the anode of the second Zener diode ZD2 outputs a fourth trigger signal.

[0123] In some embodiments, the reset unit includes a fourth switch Q4; the control terminal of the fourth switch Q4 is connected to the output terminal of the second delay unit, the first conducting terminal of the fourth switch Q4 is connected to the control terminal of the delay switch module, and the second conducting terminal of the fourth switch Q4 is grounded.

[0124] For example, the fourth switch Q4 may include an N-type transistor.

[0125] In some embodiments, the reset unit further includes a fifth switch Q5; the control terminal of the fifth switch Q5 is connected to the first conducting terminal of the fourth switch Q4, the first conducting terminal of the fifth switch Q5 is connected to the power transmission terminal, and the second conducting terminal of the fifth switch Q5 is connected to the control terminal of the fourth switch Q4.

[0126] For example, the fifth switch Q5 may include a P-type transistor.

[0127] In this embodiment, the reset unit includes a fourth switch Q4 and a fifth switch Q5; the control terminal of the fourth switch Q4 is connected to the output terminal of the second delay unit, the first conducting terminal of the fourth switch Q4 is connected to the control terminal of the delay switch module, and the second conducting terminal of the fourth switch Q4 is grounded; the control terminal of the fifth switch Q5 is connected to the first conducting terminal of the fourth switch Q4, the first conducting terminal of the fifth switch Q5 is connected to the power transmission terminal, and the second conducting terminal of the fifth switch Q5 is connected to the control terminal of the fourth switch Q4.

[0128] Continue reading Figure 5 In some embodiments, the reset unit further includes a seventh resistor R7, the first end of which is connected to the power transmission terminal, and the second end of which is connected to the first conducting terminal of the fifth switch Q5.

[0129] The following combination Figure 5 This application describes the working principle of the delayed reset module, which outputs a first-level signal when the voltage at the transmission end is greater than or equal to a preset voltage threshold for a period exceeding a first duration, and outputs a second-level signal when the voltage at the transmission end is less than the preset voltage threshold.

[0130] When the voltage at the transmission end is greater than or equal to a preset voltage threshold, the transmission end charges the second capacitor C2. The voltage at the first end of the second capacitor C2 is greater than or equal to the breakdown voltage of the second Zener diode ZD2, causing the second Zener diode ZD2 to break down. The anode of the second Zener diode ZD2 outputs a third trigger signal (i.e., a high-level signal). The fourth switch Q4 is turned on based on the third trigger signal, outputting a first-level signal (corresponding to VCC_CN in the figure as a low-level signal, VCC_CN being the signal of the control terminal node of the delay switch module). When the fourth switch Q4 is turned on, the fifth switch Q5 is turned on based on the first-level signal. The voltage at the control terminal of the fourth switch Q4 (i.e., the base of the N-type transistor) will always be greater than or equal to the threshold voltage for the fourth switch Q4 to turn on, making the fourth switch Q4 continuously turn on. Thus, the fourth switch Q4 and the fifth switch Q5 are designed as an interlocking structure, so that when the second Zener diode ZD2 breaks down, the fourth switch can reliably turn on, improving the reliability of the fourth switch Q4's turn-on, and thus improving the operational reliability of the port power supply circuit. In this way, the delayed reset module outputs a first level signal when the voltage at the power transmission end is greater than or equal to a preset voltage threshold for a period of time exceeding a first duration.

[0131] When the voltage at the transmission end is less than a preset voltage threshold, the transmission end stops charging the second capacitor C2. The electrical energy stored in the second capacitor C2 is discharged through the second resistor R2, preventing the second Zener diode ZD2 from breaking down. The anode of the second Zener diode ZD2 outputs a fourth trigger signal (i.e., a low-level signal), causing the fourth switch Q4 to open. The fourth switch Q4 outputs a second-level signal (corresponding to VCC_CN being a high-level signal in the diagram). That is, the voltage (VCC_CN) at the first conducting terminal of the fourth switch Q4 is the voltage after the voltage source VCC_I is divided by the fourth resistor R4. Thus, VCC_CN is a high-level signal, and the fifth switch Q5 is opened based on VCC_CN being a high-level signal. In this way, the second-level signal is output when the voltage at the transmission end is less than the preset voltage threshold.

[0132] Figure 6 This is a schematic diagram of the port power supply circuit provided in the sixth embodiment. Figure 6 The embodiment is Figure 3 and Figure 5 The combination of the embodiments, Figure 6 For the connection relationships and working principles between the components in the embodiment, please refer to [link / reference]. Figure 3 and Figure 5 The description of the embodiments will not be repeated here.

[0133] In this embodiment, the first duration is shorter than the second duration. The reason for setting the first duration shorter than the second duration is that, in scenarios where the external device connected to the power transmission end is a power supply device, if the voltage at the power transmission end is greater than or equal to a preset voltage threshold, and the first duration is longer than the second duration, the delayed reset module will delay the first level signal output by the first duration. If the delayed switch module receives the second level signal for a duration exceeding the second duration, it will activate the connection circuit. This means that before the delayed reset module outputs the first level signal, the power transmission end will supply power to the external device, potentially damaging the power supply device. By shortening the first duration, the power transmission end will not supply power to the external device before the delayed reset module outputs the first level signal, thereby reducing the risk of damage to the power supply device due to reverse power supply.

[0134] The energy storage products in this application embodiment may include energy storage power supplies or any other device capable of storing electrical energy. The following description uses an energy storage power supply as an example.

[0135] Figure 7 A schematic diagram of the energy storage power supply provided in the first embodiment is shown below. Figure 7 As shown, the energy storage power supply includes a power supply device and a port power supply circuit in any of the above embodiments. One end of the port power supply circuit is connected to the voltage source VCC_I, and the other end is connected to the transmission terminal of the bidirectional port of the power supply device.

[0136] Figure 8 A schematic diagram of the energy storage power supply provided in the second embodiment is shown below. Figure 8 As shown, Figure 8 Compared to the example Figure 7 The embodiment also has the following technical features: the power supply device includes an energy storage module, a communication module and a bidirectional port, the first end of the energy storage module is connected to the communication module, and the second end of the energy storage module is connected to the power transmission end of the bidirectional port through the main power supply circuit.

[0137] For example, the energy storage module includes a battery and a battery management circuit, with a first terminal of the battery management circuit connected to the battery, a second terminal of the battery management circuit connected to the power transmission terminal, and a third terminal of the battery management circuit connected to the communication module.

[0138] The communication module can be a wireless communication module or a wired communication module. In the case of a wired communication module, in some embodiments, such as... Figure 8 As shown, the communication module can also be connected to the communication end of a bidirectional port. In other embodiments, the communication module can also be connected to the communication end of other ports. In this way, the communication module can receive the adaptation completion signal from the power supply device through the communication end.

[0139] Figure 9 A schematic diagram of the energy storage power supply provided in the third embodiment is shown below. Figure 9 As shown, Figure 9 Compared to the example Figure 7 The embodiment also has the following technical features: the power supply device includes an energy storage module and a bidirectional port, and the energy storage module is connected to the power transmission end of the bidirectional port through the main power supply circuit.

[0140] For example, the energy storage module includes a battery and a battery management circuit, with a first terminal of the battery management circuit connected to the battery and a second terminal of the battery management circuit connected to the power transmission terminal.

[0141] The following describes the operating modes of the energy storage power supply in the following scenarios: when the external device connected to the transmission end is an electrical consumer, when the external device connected to the transmission end is a power supply device, and when no external device is connected to the transmission end:

[0142] In some embodiments, if the external device connected to the power transmission end is an electrical device, the duration for which the delay switch module of the port power supply circuit conducts the connection circuit is a first duration. During the conduction period of the connection circuit, the communication module receives the adaptation completion signal of the electrical device and outputs a start signal to the energy storage module. When the energy storage module receives the start signal, it supplies power to the electrical device through the main power supply circuit. During the period when the energy storage module supplies power to the electrical device through the main power supply circuit, the voltage of the power transmission end is continuously greater than or equal to a preset voltage threshold, and the connection circuit between the voltage source and the power transmission end is continuously disconnected.

[0143] In some embodiments, if the external device connected to the power transmission terminal is a power supply device, the voltage of the power transmission terminal is continuously greater than or equal to a preset voltage threshold, the connection circuit between the voltage source and the power transmission terminal is continuously disconnected, and the power supply device supplies power to the energy storage module through the main power supply circuit.

[0144] In some embodiments, if the power transmission end is not connected to an external device, the port power supply circuit periodically turns on the connection circuit.

[0145] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0146] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A port power supply circuit applied to a power supply device, the power supply device having a bidirectional port for power transmission, the power transmission port being used for connection to an external device, characterized in that, The port power supply circuit includes a delay switch module and a delay reset module. The input terminal of the delay switch module is connected to a voltage source, the output terminal of the delay switch module is connected to the power transmission terminal, the control terminal of the delay switch module is connected to the output terminal of the delay reset module, and the input terminal of the delay reset module is connected to the power transmission terminal. The delayed reset module is used to output a first level signal as a reset signal when the voltage at the power transmission end is greater than or equal to a preset voltage threshold for a period of time exceeding a first duration, and to output a second level signal when the voltage at the power transmission end is less than the preset voltage threshold. The first duration is greater than or equal to the duration from the start of power-on to the transmission of the adaptation completion signal when the external device is an electrical device; The delay switch module is used to disconnect the connection circuit between the voltage source and the power transmission terminal when the first level signal is received, and to turn on the connection circuit when the duration of receiving the second level signal exceeds a second duration.

2. The port power supply circuit according to claim 1, characterized in that, The delay switch module includes a first delay unit and a power output unit; the control terminal of the first delay unit is connected to the output terminal of the delay reset module and the voltage source respectively, the input terminal of the first delay unit is connected to the voltage source, the output terminal of the first delay unit is connected to the control terminal of the power output unit, the input terminal of the power output unit is connected to the voltage source, and the output terminal of the power output unit is connected to the power transmission terminal. The first delay unit is configured to output a first trigger signal when the first level signal is received, and to output a second trigger signal when the duration of receiving the second level signal exceeds the second duration. The power output unit is configured to disconnect the connection circuit when receiving the first trigger signal and to turn on the connection circuit when receiving the second trigger signal.

3. The port power supply circuit according to claim 2, characterized in that, The first delay unit includes a bypass subunit and a delay subunit; the control terminal of the bypass subunit is connected to the output terminal of the delay reset module and the voltage source respectively, the bypass terminal of the bypass subunit is connected to the voltage source and the input terminal of the delay subunit respectively, and the output terminal of the delay subunit is connected to the control terminal of the power output unit; The bypass subunit is used to open the power release path when receiving the first level signal, so that the power output of the voltage source is bypassed, and to open the power release path when receiving the second level signal, so that the voltage source supplies power to the delay subunit. The delay subunit is configured to output the first trigger signal when no power is received or the duration of the received power does not exceed the second duration, and to output the second trigger signal when the duration of the received power exceeds the second duration.

4. The port power supply circuit according to claim 3, characterized in that, The bypass subunit includes a first switch, and the delay subunit includes a first capacitor and a first Zener diode; The control terminal of the first switch is connected to the output terminal of the delayed reset module and the voltage source, the first conducting terminal of the first switch is connected to the voltage source and the first terminal of the first capacitor, and the second conducting terminal of the first switch is grounded. The first terminal of the first capacitor is also connected to the cathode of the first Zener diode, the second terminal of the first capacitor is grounded, and the anode of the first Zener diode is connected to the control terminal of the power output unit.

5. The port power supply circuit according to claim 2, characterized in that, The power output unit includes a signal output subunit and a switch subunit; the input terminal of the signal output subunit is connected to the output terminal of the first delay unit, the output terminal of the signal output subunit is connected to the control terminal of the switch subunit, the first conducting terminal of the switch subunit is connected to the voltage source, and the second conducting terminal of the switch subunit is connected to the power transmission terminal. The signal output subunit is configured to output a disconnect signal when the first trigger signal is received, and to output a conduction signal when the second trigger signal is received; The switching subunit is used to disconnect the connection circuit when receiving the disconnect signal and to connect the connection circuit when receiving the conduction signal.

6. The port power supply circuit according to claim 5, characterized in that, The signal output subunit includes a second switch, and the switch subunit includes a third switch, a first resistor, and a diode; The control terminal of the second switch is connected to the output terminal of the first delay unit, the first conducting terminal of the second switch is connected to the control terminal of the third switch, and the second conducting terminal of the second switch is grounded. The first conducting terminal of the third switch is connected to the voltage source, the second conducting terminal of the third switch is connected to the anode of the diode, and the cathode of the diode is connected to the power transmission terminal; The first end of the first resistor is connected to the first conducting end of the third switch, and the second end of the first resistor is connected to the control end of the third switch.

7. The port power supply circuit according to any one of claims 1-6, characterized in that, The delay reset module includes a second delay unit and a reset unit; the input terminal of the second delay unit is connected to the power transmission terminal, the output terminal of the second delay unit is connected to the input terminal of the reset unit, and the output terminal of the reset unit is connected to the control terminal of the delay switch module. The second delay unit is configured to output a third trigger signal when the duration for which the voltage at the power transmission end is greater than or equal to the preset voltage threshold exceeds the first duration, and to output a fourth trigger signal when the voltage at the power transmission end is less than the preset voltage threshold. The reset unit is configured to output the first level signal when it receives the third trigger signal, and to output the second level signal when it receives the fourth trigger signal.

8. The port power supply circuit according to claim 7, characterized in that, The second delay unit includes a second resistor, a second capacitor, and a second Zener diode; The first end of the second resistor is connected to the power transmission terminal, and the second end of the second resistor is grounded. The first terminal of the second capacitor is connected to the first terminal of the second resistor and the cathode of the second Zener diode, and the second terminal of the second capacitor is grounded. The anode of the second Zener diode is connected to the input terminal of the reset unit.

9. The port power supply circuit according to claim 7, characterized in that, The reset unit includes a fourth switch and a fifth switch; The control terminal of the fourth switch is connected to the output terminal of the second delay unit, the first conducting terminal of the fourth switch is connected to the control terminal of the delay switch module, and the second conducting terminal of the fourth switch is grounded. The control terminal of the fifth switch is connected to the first conducting terminal of the fourth switch, the first conducting terminal of the fifth switch is connected to the power transmission terminal, and the second conducting terminal of the fifth switch is connected to the control terminal of the fourth switch.

10. The port power supply circuit according to any one of claims 1-6, characterized in that, The first duration is shorter than the second duration.

11. An energy storage power source, characterized in that, The port power supply circuit according to any one of claims 1-10 includes a power supply device and a power transmission terminal connected to the bidirectional port of the power supply device.

12. The energy storage power supply according to claim 11, characterized in that, The power supply device includes an energy storage module, a communication module, and a bidirectional port. The first end of the energy storage module is connected to the communication module, and the second end of the energy storage module is connected to the power transmission end of the bidirectional port through the main power supply circuit. If the external device connected to the power transmission terminal is an electrical device, the duration for which the delay switch module of the port power supply circuit conducts the connection circuit is the first duration. During the conduction period of the connection circuit, the communication module receives the adaptation completion signal of the electrical device and outputs a start signal to the energy storage module. When the energy storage module receives the start signal, it supplies power to the electrical device through the main power supply circuit. During the period when the energy storage module supplies power to the electrical equipment through the main power supply circuit, the voltage at the transmission terminal is continuously greater than or equal to the preset voltage threshold, and the connection circuit between the voltage source and the transmission terminal is continuously disconnected.

13. The energy storage power supply according to claim 11 or 12, characterized in that, The power supply device includes an energy storage module and a bidirectional port. The energy storage module is connected to the power transmission end of the bidirectional port through a main power supply circuit. If the external device connected to the power transmission terminal is a power supply device, and the voltage of the power transmission terminal is continuously greater than or equal to a preset voltage threshold, the connection circuit between the voltage source and the power transmission terminal is continuously disconnected, and the power supply device supplies power to the energy storage module through the main power supply circuit.

14. The energy storage power supply according to claim 11 or 12, characterized in that, If the power transmission terminal is not connected to an external device, the port power supply circuit periodically turns on the connection circuit.

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