Electronic device

Abstract

The application discloses an electronic device, and relates to the power supply field. The electronic device comprises a power supply module and a control module, wherein the power supply module is electrically connected with a system bus; the power supply module comprises a first power supply unit and a second power supply unit; the first power supply unit is used for supplying power to the system bus; the internal resistance of the first power supply unit is greater than that of the second power supply unit; the control module is electrically connected with the system bus and the second power supply unit, and is used for acquiring a first target voltage of the system bus; in response to the first target voltage being less than or equal to a first voltage threshold, the second power supply unit is controlled to supply power to the system bus, and the second power supply unit is used at least for compensating for transient drop of the first target voltage; wherein the first voltage threshold is associated with the internal resistance of the first power supply unit.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and more particularly to electronic equipment. Background Technology

[0002] Electronic devices supply power to the system bus via power supply units to meet the operational needs of various power-consuming modules within the devices. However, when electronic devices operate high-power applications and generate transient large currents, the voltage of the power supply unit will experience a transient drop due to the internal resistance of the power supply unit. This causes the system bus voltage to fall below the minimum operating voltage threshold of the electronic device, thereby triggering undervoltage protection and affecting the normal operation of the electronic device. Summary of the Invention

[0003] In view of this, this application provides an electronic device, including: a power supply module electrically connected to a system bus; the power supply module includes a first power supply unit and a second power supply unit; the first power supply unit is used to supply power to the system bus; the internal resistance of the first power supply unit is greater than the internal resistance of the second power supply unit; a control module electrically connected to the system bus and the second power supply unit, used to acquire a first target voltage of the system bus, and in response to the first target voltage being less than or equal to a first voltage threshold, control the second power supply unit to supply power to the system bus, the second power supply unit being used at least to compensate for transient drops in the first target voltage; wherein, the first voltage threshold is associated with the internal resistance of the first power supply unit.

[0004] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0005] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0006] Figure 1 One of the schematic diagrams of an electronic device provided in an embodiment of this application;

[0007] Figure 2 A second schematic diagram of an electronic device provided in an embodiment of this application;

[0008] Figure 3 A third schematic diagram of an electronic device provided in an embodiment of this application;

[0009] Figure 4 Fourth schematic diagram of an electronic device provided in an embodiment of this application;

[0010] Figure 5 Fifth schematic diagram of an electronic device provided in an embodiment of this application;

[0011] Figure 6 This is a sixth schematic diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0012] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0013] It should be noted that, in the description of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The terms "first," "second," etc., in this application are used to distinguish similar objects and are not used to describe a specific order or sequence.

[0014] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] As electronic devices increasingly demand longer battery life, silicon anode batteries are gradually becoming the mainstream power solution in the industry due to their significantly higher energy density compared to traditional graphite anode batteries. However, silicon anode batteries have inherent physicochemical defects: their internal resistance is significantly higher than that of traditional graphite batteries, and this internal resistance increases sharply as the temperature decreases or the state of charge (SOC) decreases.

[0016] In some related technologies, electronic devices use silicon anode batteries to directly power the system bus. In this solution, the silicon anode battery is connected to the system bus via a power management integrated circuit (PMIC), and all load current demands are met by this battery. When the electronic device operates under high-power loads, the system draws a large current instantaneously. According to Ohm's law, the battery terminal voltage equals the open-circuit voltage minus the product of the current and internal resistance. The high internal resistance of the silicon anode battery causes a drastic transient drop in terminal voltage. Even if there is still a large amount of residual chemical energy inside the battery, the terminal voltage may momentarily reach the system's under-voltage lockout (UVLO) threshold, triggering the PMIC's power-off protection and causing the device to shut down unexpectedly.

[0017] Furthermore, voltage transients can cause processor downclocking, resets, or critical peripherals to disconnect, affecting system stability. Because there is a time delay in the software detecting voltage drops and implementing downclocking, the voltage drop often occurs by the time the processor responds, making it impossible to effectively prevent undervoltage shutdown. In low-temperature environments, the internal resistance of silicon anode cells increases further, amplifying these problems and rendering high-power functions virtually unusable in cold environments.

[0018] To address the problems in related technologies, embodiments of this application provide an electronic device, including: a power supply module electrically connected to a system bus; the power supply module includes a first power supply unit and a second power supply unit; the first power supply unit is used to supply power to the system bus; the internal resistance of the first power supply unit is greater than the internal resistance of the second power supply unit.

[0019] The control module, electrically connected to the system bus and the second power supply unit, is used to acquire a first target voltage of the system bus and, in response to the first target voltage being less than or equal to a first voltage threshold, control the second power supply unit to supply power to the system bus. The second power supply unit is used at least to compensate for transient drops in the first target voltage.

[0020] The first voltage threshold is related to the internal resistance of the first power supply unit.

[0021] By adopting the technical solution of this application, the electronic device is powered by the first power supply unit to the system bus under normal operating conditions. When the electronic device operates a high-power application and generates a transient large current, although the output voltage of the first power supply unit drops due to its high internal resistance, the control module can obtain the first target voltage of the system bus in real time and compare it with the first voltage threshold.

[0022] Once the first target voltage is detected to be less than or equal to the first voltage threshold due to a transient drop, the control module immediately controls the second power supply unit to supply power to the system bus. Because the internal resistance of the second power supply unit is less than that of the first power supply unit, the second power supply unit can provide a more stable voltage output under transient high-current loads, thereby effectively compensating for the transient drop in the first target voltage and maintaining the system bus voltage above the minimum operating voltage threshold of the electronic equipment, preventing undervoltage protection from triggering and causing unexpected shutdown of the electronic equipment.

[0023] Furthermore, since the first voltage threshold is related to the internal resistance of the first power supply unit, the control module can accurately determine when the second power supply unit needs to intervene for compensation based on the actual internal resistance characteristics of the first power supply unit. This ensures the stability of the system power supply while avoiding unnecessary intervention of the second power supply unit, thereby improving the reliability and user experience of electronic devices in high-power application scenarios.

[0024] It should be noted that the electronic devices in this application embodiment can be wearable devices such as smartphones, tablets, smartwatches, and smart bracelets; portable electronic products such as laptops, portable game consoles, digital cameras, and camcorders; and battery-powered devices such as drones, power tools, power banks, and in-vehicle electronic devices. This application embodiment does not limit the specific type or application scenario of the electronic devices.

[0025] The electronic device of this application will now be described in detail with reference to the accompanying drawings.

[0026] Figure 1 This is one of the schematic diagrams of an electronic device provided in an embodiment of this application.

[0027] like Figure 1 As shown, the electronic device in this application embodiment includes: a power supply module 10, a system bus 20, and a control module 30.

[0028] The power supply module 10 is electrically connected to the system bus 20. The power supply module may include a first power supply unit 110 and a second power supply unit 120. The first power supply unit 110 supplies power to the system bus 20. The internal resistance of the first power supply unit 110 is greater than the internal resistance of the second power supply unit 120.

[0029] For example, power supply module 10 can refer to a module in an electronic device that provides electrical energy to the system. Power supply module 10 may include multiple power supply units, each with different electrochemical and electrical characteristics. For instance, power supply module 10 may be a heterogeneous dual-cell module composed of two or more batteries.

[0030] For example, system bus 20 can refer to the main power supply bus inside an electronic device. System bus 20 can be electrically connected to various functional modules of the electronic device, and system bus 20 supplies power to loads such as the processor, display screen, communication module, and camera module of the electronic device.

[0031] Optionally, the power supply module 10 may include a first power supply unit 110 and a second power supply unit 120. The first power supply unit 110 refers to the power supply unit in the power supply module 10 that serves as the main energy source. The first power supply unit 110 is directly electrically connected to the system bus 20, and provides continuous power output to the system bus 20. The first power supply unit 110 has high energy density characteristics and can undertake the main power supply task for electronic equipment.

[0032] For example, the first power supply unit 110 can be a silicon anode lithium-ion battery, a silicon-carbon anode lithium-ion battery, or a silicon-oxygen anode lithium-ion battery.

[0033] The second power supply unit 120 can refer to the power supply unit in the power supply module 10 that serves as an auxiliary power source. The second power supply unit 120 has the characteristic of high power density and can respond quickly when the system requires a large instantaneous current. The internal resistance of the second power supply unit 120 is less than that of the first power supply unit 110, and the second power supply unit 120 can generate a smaller voltage drop under the same current load.

[0034] For example, the second power supply unit 120 can be a graphite negative electrode lithium-ion battery, a supercapacitor, or a hybrid capacitor.

[0035] It should be noted that the internal resistance of the first power supply unit 110 is greater than that of the second power supply unit 120. The internal resistance of the first power supply unit 110 may increase as the temperature decreases or the state of charge decreases. In some scenarios, due to the large internal resistance of the first power supply unit 110, the terminal voltage of the first power supply unit 110 may experience a significant transient drop when the electronic device is operating under a high-power load.

[0036] The control module 30 is electrically connected to the system bus 20 and the second power supply unit 120. The control module 30 can acquire a first target voltage for the system bus 20. In response to the first target voltage being less than or equal to a first voltage threshold, the control module 30 can control the second power supply unit 120 to supply power to the system bus 20. The second power supply unit can be used at least to compensate for transient drops in the first target voltage.

[0037] For example, the control module 30 may refer to a circuit module in an electronic device used to monitor the voltage status of the system bus 20 and control the timing of the intervention of the second power supply unit 120. The control module 30 can realize real-time voltage monitoring of the system bus 20. The control module 30 can trigger the intervention of the second power supply unit 120 when an abnormal voltage is detected.

[0038] The control module 30 can acquire the first target voltage of the system bus 20. The first target voltage refers to the real-time voltage value of the system bus 20 detected by the control module 30 at a certain moment when the first power supply unit 110 supplies power to the system bus 20. The first target voltage can reflect the actual power supply capacity of the first power supply unit 110 under the current load conditions. When the system load of the electronic device is small, the first target voltage can be maintained at a high voltage level; when the system load of the electronic device suddenly increases, the first target voltage may experience a transient drop due to the large internal resistance of the first power supply unit 110.

[0039] In one implementation, the control module 30 can be a control circuit composed of hardware circuitry. The control module 30 may include a voltage comparator, logic gate circuits, and a drive circuit. The voltage comparator in the control module 30 can compare the first target voltage with a first voltage threshold in real time. The output signal of the voltage comparator can directly drive the switching circuit, which can control the connection or disconnection of the second power supply unit 120 and the system bus 20. Due to the extremely small signal transmission delay of the hardware circuit, the control module 30 can complete its response action within microseconds after detecting a drop in the first target voltage, enabling rapid compensation for transient voltage drops.

[0040] In another implementation, the control module 30 can also be a hybrid control system combining hardware circuitry and software control. The hardware circuitry of the control module 30 can handle rapid voltage detection and emergency response, while the software control portion can handle more complex decision-making logic and state management.

[0041] Optionally, the first voltage threshold refers to the voltage reference value used by the trigger control module 30 to control the intervention of the second power supply unit 120. The first voltage threshold can be set according to the system operating requirements of the electronic device and the characteristics of the first power supply unit 110. The first voltage threshold is usually lower than the normal operating voltage of the first power supply unit 110, but higher than the minimum operating voltage or undervoltage protection voltage of the electronic device.

[0042] For example, the first voltage threshold can be set to any value between 3.2V and 3.6V. The specific value of the first voltage threshold can be determined based on the voltage sensitivity of each functional module in the electronic device.

[0043] Optionally, the first voltage threshold can be correlated with the internal resistance of the first power supply unit 110. When the internal resistance of the first power supply unit 110 is large, the voltage drop generated by the first power supply unit 110 under the same load current is greater, and the first voltage threshold can be set accordingly higher. The control module 30 can trigger the intervention of the second power supply unit 120 earlier, and the control module 30 can prevent the voltage of the system bus 20 from dropping to a dangerous area. When the internal resistance of the first power supply unit 110 is small, the first voltage threshold can be set relatively low. A correspondence can be established between the first voltage threshold and the internal resistance of the first power supply unit 110, and this correspondence can be obtained through experimental testing or theoretical calculation.

[0044] Optionally, the first voltage threshold can be dynamically adjusted according to the real-time operating status of the first power supply unit 110. The internal resistance of the first power supply unit 110 changes with factors such as temperature and state of charge, and the first voltage threshold can be adjusted accordingly to adapt to the changes in the internal resistance of the first power supply unit 110. The electronic device can detect the temperature of the first power supply unit 110 through a temperature sensor, and the electronic device can detect the state of charge of the first power supply unit 110 through a fuel gauge chip. The electronic device can estimate the current internal resistance of the first power supply unit 110 based on these parameters, and the electronic device can use the estimated internal resistance value to calculate or look up the corresponding first voltage threshold.

[0045] It should be noted that the second power supply unit 120 is at least used to compensate for transient voltage drops in the first target voltage. A transient voltage drop refers to a rapid decrease in the voltage of the system bus 20 within a very short period of time. Transient voltage drops are usually caused by the sudden activation of high-power loads by electronic devices, such as activating a 5G RF module, starting a camera imaging processor, turning on a flash, or starting a high-performance computing task. Due to the relatively high internal resistance of the first power supply unit 110, it cannot provide a sufficiently large current instantaneously without generating a significant voltage drop, thus causing a voltage drop in the system bus 20. By connecting the second power supply unit 120 in parallel with the system bus 20, the second power supply unit 120 can share part of the load current, and its lower internal resistance can help maintain the voltage of the system bus 20 within a safe range.

[0046] It should be noted that, in addition to compensating for transient drops, the second power supply unit 120 can also provide auxiliary power to the system bus 20 in other scenarios. For example, when the first power supply unit 110 is depleted or malfunctions, the second power supply unit 120 can serve as a backup power source to provide short-term emergency power to electronic devices. The second power supply unit 120 can also support electronic devices in completing data saving or safe shutdown operations.

[0047] By adopting the technical solution of this embodiment, the electronic device is powered by the first power supply unit 110 to the system bus 20 under normal operating conditions. When the electronic device is running a high-power application that generates a transient high-current load, the first power supply unit 110 will cause the output voltage to drop due to its high internal resistance. The control module 30 can obtain the first target voltage of the system bus 20 in real time and compare it with the first voltage threshold.

[0048] When the control module 30 detects that the first target voltage is less than or equal to the first voltage threshold due to a transient drop, the control module 30 immediately controls the second power supply unit 120 to supply power to the system bus 20. Since the internal resistance of the second power supply unit 120 is less than that of the first power supply unit 110, the second power supply unit 120 can provide a more stable voltage output under transient high current load. The second power supply unit 120 effectively compensates for the transient drop of the first target voltage, and the second power supply unit 120 keeps the voltage of the system bus 20 above the minimum operating voltage threshold of the electronic equipment, preventing the electronic equipment from triggering undervoltage protection and causing unexpected shutdown.

[0049] Furthermore, since the first voltage threshold is related to the internal resistance of the first power supply unit 110, the control module 30 can accurately determine the intervention time of the second power supply unit 120 based on the actual internal resistance characteristics of the first power supply unit 110. While ensuring the stability of the system power supply, the control module 30 avoids unnecessary intervention of the second power supply unit 120, thereby improving the power supply reliability of the electronic device in high-power application scenarios.

[0050] Specifically, this embodiment addresses the inherent drawbacks of using a high-energy-density but high-internal-resistance battery as the first power supply unit 110. While the first power supply unit 110 possesses high energy density, its internal resistance increases significantly in low-temperature environments or under low-charge conditions, making it prone to severe voltage drops under transient high currents. By introducing a second power supply unit 120 with lower internal resistance as a transient voltage compensation unit, the electronic device can fully leverage the high energy density advantage of the first power supply unit 110 while overcoming its high internal resistance disadvantage, significantly improving the overall battery life and user experience.

[0051] The above embodiments have provided a detailed description of the overall architecture of the electronic device. The specific implementation of the control module 30 is described below.

[0052] Please refer to Figure 2 , Figure 2 This is a second schematic diagram of an electronic device provided in an embodiment of this application.

[0053] like Figure 2 As shown, the control module 30 may include a switching unit 310 and a detection unit 320.

[0054] The switch unit 310 can be electrically connected to the system bus 20 and the second power supply unit 120 respectively.

[0055] The detection unit 320 can be electrically connected to both the system bus 20 and the switching unit 310. The detection unit 320 can acquire a first target voltage of the system bus 20. In response to the first target voltage being less than or equal to a first voltage threshold, the detection unit 320 can send an enable signal to the switching unit 310.

[0056] The switching unit 310 can respond to the turn-on signal to turn on the first power supply circuit between the second power supply unit 120 and the system bus 20, so that the second power supply unit 120 supplies power to the system bus 20.

[0057] For example, the switching unit 310 may refer to a switching circuit in the control module 30 used to control the electrical connection state between the second power supply unit 120 and the system bus 20. The switching unit 310 can dynamically connect or disconnect the second power supply unit 120 and the system bus 20. The switching unit 310 can close to conduct when it receives an open signal, and can open to isolate when it receives an open signal.

[0058] Optionally, the switching unit 310 may include a power switching device. This power switching device may be a field-effect transistor. Alternatively, the switching unit 310 may employ an ideal diode.

[0059] For example, the detection unit 320 may refer to the detection circuit in the control module 30 used to monitor the voltage state of the system bus 20 in real time and generate control signals. The detection unit 320 can continuously acquire the first target voltage of the system bus 20, compare the first target voltage with a preset first voltage threshold, and generate a corresponding control signal based on the comparison result.

[0060] Optionally, the detection unit 320 may include a voltage comparator. The first input terminal of the voltage comparator may be electrically connected to the system bus 20 to receive a first target voltage, the second input terminal of the voltage comparator may receive a first voltage threshold as a reference voltage, and the output terminal of the voltage comparator may be electrically connected to the switching unit 310 to output an enable signal.

[0061] Optionally, the detection unit 320 may include a reference voltage source. This reference voltage source can be used to generate a first voltage threshold. The reference voltage source can be a bandgap reference voltage source or a Zener diode reference voltage source. The reference voltage source can provide a reference voltage with good temperature stability, ensuring that the first voltage threshold remains stable under different ambient temperatures.

[0062] Optionally, the detection unit 320 may include a resistor voltage divider network. The resistor voltage divider network can divide the first target voltage of the system bus 20, and the divided voltage signal can be input to the voltage comparator.

[0063] It should be noted that the detection unit 320 can be implemented using pure hardware circuitry, thereby eliminating software processing delays while meeting the requirements for rapid response to transient voltage drops.

[0064] For example, the first power supply circuit refers to the current path through which the second power supply unit 120 supplies power to the system bus 20 via the switching unit 310. The first power supply circuit may include the output terminal of the second power supply unit 120, the conduction path of the switching unit 310, and the system bus 20. When the switching unit 310 is turned on, the first power supply circuit forms a low-impedance path, and the electrical energy of the second power supply unit 120 can be transmitted to the system bus 20 through the first power supply circuit. When the switching unit 310 is turned off, the first power supply circuit is in a high-impedance off state, and the second power supply unit 120 is electrically isolated from the system bus 20.

[0065] It should be noted that the first power supply circuit can be connected in parallel with the power supply circuit of the first power supply unit 110 when it is turned on. The first power supply unit 110 can continuously supply power to the system bus 20 through its own power supply circuit, and the second power supply unit 120 can supply power to the system bus 20 together with the first power supply unit 110 through the first power supply circuit. Since the internal resistance of the second power supply unit 120 is less than that of the first power supply unit 110, the second power supply unit 120 can handle most of the transient current on the system bus 20, reduce the transient current burden of the first power supply unit 110, reduce the voltage drop across the internal resistance of the first power supply unit 110, and increase the voltage level of the system bus 20.

[0066] By adopting the technical solution of this embodiment, since the detection unit 320 uses hardware circuitry to implement voltage detection and comparison functions, the response time of the detection unit 320 can reach the microsecond level. The detection unit 320 can complete detection and signal output in a very short time when a transient voltage drop occurs. Since the switching unit 310 uses power semiconductor devices to achieve fast switching, the conduction time of the switching unit 310 can be controlled in the microsecond level. The switching unit 310 can quickly establish a low-impedance path between the second power supply unit 120 and the system bus 20 after receiving the turn-on signal.

[0067] The aforementioned hardware-level fast response method is significantly superior to the software control method. It can effectively intercept transient voltage spikes caused by the sudden start-up of high-power loads. This hardware-level fast response method can maintain the voltage of the system bus 20 within a safe operating range. It can prevent electronic devices from unexpectedly shutting down due to undervoltage protection triggered by voltage drops, thereby improving the power supply reliability and system stability of electronic devices under transient high-power load scenarios.

[0068] Based on the above embodiments, as an optional embodiment, such as... Figure 2 As shown, the detection unit 320 is also electrically connected to the second power supply unit 120.

[0069] The detection unit 320 can respond to the first power supply circuit being turned on to obtain the second target voltage of the system bus 20 and the second power supply voltage of the second power supply unit 120.

[0070] The detection unit 320 can send a disconnect signal to the switching unit 310 in response to the second target voltage being greater than the second supply voltage.

[0071] The switching unit 310 can respond to a disconnection signal to disconnect the first power supply circuit, thereby stopping the second power supply unit 120 from supplying power to the system bus 20.

[0072] For example, the second target voltage refers to the real-time voltage value of the system bus 20 detected by the detection unit 320 after the first power supply circuit is turned on. The second target voltage and the first target voltage can be the voltage values ​​of the system bus 20 at different operating stages. When the first power supply unit 110 supplies power to the system bus 20 alone, the first target voltage can mainly reflect the voltage characteristics of the first power supply unit 110. When the second power supply unit 120 intervenes to supply power to the system bus 20, the second target voltage can mainly reflect the voltage characteristics of the second power supply unit 120. The second target voltage can reflect the bus voltage level when the first power supply unit 110 and the second power supply unit 120 jointly supply power to the system bus 20. When the second power supply unit 120 intervenes to compensate, the voltage of the system bus 20 can gradually recover from a drop state.

[0073] For example, the second supply voltage refers to the terminal voltage of the second power supply unit 120. The second supply voltage can characterize the current voltage state of the second power supply unit 120. The second supply voltage can be affected by the state of charge and output current of the second power supply unit 120. When the second power supply unit 120 outputs current to the system bus 20, the second supply voltage can be lower than the open-circuit voltage of the second power supply unit 120 due to the internal resistance voltage drop.

[0074] Optionally, the detection unit 320 may include a second voltage sampling circuit. This second voltage sampling circuit may be electrically connected to the second power supply unit 120. The second voltage sampling circuit can acquire the second power supply voltage of the second power supply unit 120 in real time. The acquired second power supply voltage can be transmitted to the comparison circuit of the detection unit 320.

[0075] Optionally, the detection unit 320 may include a second voltage comparator. This second voltage comparator can compare the second target voltage with the second supply voltage in real time. The first input terminal of the second voltage comparator can receive the second target voltage, the second input terminal can receive the second supply voltage, and the output terminal of the second voltage comparator can be electrically connected to the switching unit 310. When the second target voltage is greater than the second supply voltage, the second voltage comparator can output a disconnect signal.

[0076] It should be noted that the detection unit 320 can continuously monitor the relationship between the second target voltage and the second supply voltage after the first power supply circuit is turned on. When the first power supply circuit is first turned on, since the voltage of the second power supply unit 120 is higher than the voltage of the system bus 20, current can flow from the second power supply unit 120 to the system bus 20, and the second power supply unit 120 can provide compensation current for the system bus 20. As the voltage of the system bus 20 recovers, the second target voltage can gradually increase. When the system load decreases or the output capability of the first power supply unit 110 recovers, the second target voltage can rise to a level close to or exceeding the second supply voltage.

[0077] It should be noted that when the second target voltage is greater than the second supply voltage, if the first supply circuit remains on, current may flow in reverse from the system bus 20 into the second supply unit 120, which can charge the second supply unit 120. This reverse charging may cause the second supply unit 120 to overcharge, shorten its lifespan, and reduce its safety. Therefore, the detection unit 320 can immediately send a disconnect signal to the switching unit 310 when it detects that the second target voltage is greater than the second supply voltage. The switching unit 310 can then quickly disconnect the first supply circuit and prevent the generation of reverse current.

[0078] For example, the disconnect signal refers to the control signal sent by the detection unit 320 to the switching unit 310. The disconnect signal can cause the power switching device in the switching unit 310 to change from a conducting state to a disconnected state. The disconnect signal can be generated within microseconds after the detection unit 320 detects that the second target voltage is greater than the second supply voltage.

[0079] Upon receiving a disconnection signal, the switching unit 310 can immediately disconnect the first power supply circuit. The power switching device in the switching unit 310 can enter the disconnected state, and the electrical connection between the second power supply unit 120 and the system bus 20 is broken. After the first power supply circuit is disconnected, the second power supply unit 120 can stop supplying power to the system bus 20, and the second power supply unit 120 can achieve electrical isolation from the system bus 20, thus avoiding the influence of reverse current.

[0080] By adopting the technical solution of this embodiment, the detection unit 320 can simultaneously monitor the second target voltage of the system bus 20 and the second power supply voltage of the second power supply unit 120, thereby determining the power supply status of the second power supply unit 120 in real time. When the voltage of the system bus 20 rises to a level higher than that of the second power supply unit 120, the detection unit 320 can immediately trigger a disconnection action, and the switching unit 310 can quickly disconnect the first power supply circuit, thereby effectively preventing reverse current from flowing from the system bus 20 into the second power supply unit 120.

[0081] The technical solution of this embodiment can prevent the second power supply unit 120 from overcharging due to reverse charging, thereby protecting the safety of the second power supply unit 120 and extending its service life. Furthermore, since the detection unit 320 uses hardware circuitry to implement real-time voltage comparison and disconnection signal generation, the response speed of this embodiment can reach the microsecond level, thus completing the protection action before reverse current is generated, improving the power supply safety of electronic equipment.

[0082] The above embodiments describe the power supply process of the first power supply circuit. The following describes the power supply process of the first power supply circuit being disconnected and de-energized.

[0083] Please refer to Figure 3 , Figure 3 This is a third schematic diagram of an electronic device provided in an embodiment of this application.

[0084] In order to achieve precise control over when the second power supply unit 120 disconnects from power supply, this embodiment of the application uses the processor 40 to make a comprehensive determination based on the system operating status.

[0085] like Figure 3 As shown, the electronic device in this embodiment may further include a processor 40. The processor 40 is electrically connected to the control module 30 and communicatively connected to the power supply module 10.

[0086] The processor 40 can obtain the first power supply voltage of the first power supply unit 110, the second power supply voltage of the second power supply unit 120, and the system load of the electronic device.

[0087] The processor 40 can send a disconnect signal to the control module 30 in response to the fulfillment of the target condition.

[0088] In response to a disconnection signal, the control module 30 can control the second power supply unit 120 to stop supplying power to the system bus 20.

[0089] For example, processor 40 may refer to a central processing unit in an electronic device. Processor 40 may run an operating system and applications, and processor 40 may execute power management-related control logic.

[0090] For example, the processor 40 and the power supply module 10 can communicate via a communication bus. This communication bus can be an I2C bus, an SPI bus, or a single-wire communication bus. The processor 40 can read voltage, current, temperature, and other parameter information from the first power supply unit 110 and the second power supply unit 120 via this communication bus.

[0091] For example, the first supply voltage refers to the terminal voltage of the first power supply unit 110. The first supply voltage can reflect the actual output voltage level of the first power supply unit 110 under the current load conditions.

[0092] It should be noted that the second supply voltage refers to the terminal voltage of the second power supply unit 120. The second supply voltage can characterize the current voltage state and remaining power level of the second power supply unit 120.

[0093] For example, system load refers to the power consumption level of an electronic device at a given moment. System load may include the total power consumption of various functional modules such as the processor, display screen, communication module, and camera module. The processor 40 can obtain the system load by monitoring the system current or statistically analyzing the operating status of each functional module.

[0094] For example, the target condition refers to the determination condition by which the processor 40 decides whether the first power supply circuit should be disconnected. The target condition may include multiple sub-conditions. The processor 40 may send a disconnect signal to the control module 30 when at least one sub-condition of the target condition is met. The processor 40 may also send a disconnect signal to the control module 30 when all sub-conditions of the target condition are met.

[0095] Optionally, the target conditions may include at least one of the following.

[0096] First condition: The system load of the electronic device is less than or equal to the load threshold.

[0097] Second condition: The first supply voltage is greater than the first voltage threshold.

[0098] The third condition is that the difference between the first supply voltage and the second supply voltage is less than the second voltage threshold.

[0099] The first condition is used to determine whether the high-power load of the electronic device has ended. When the system load of the electronic device is less than or equal to the load threshold, the electronic device can consider that the high-power event causing the voltage drop has ended, and the first power supply unit 110 can independently handle the current system load. The load threshold can be set according to the power supply capacity of the first power supply unit 110. The load threshold can be the maximum power value that the first power supply unit 110 can stably supply in the current state.

[0100] For example, the load threshold can be set to a value in the range of 2W to 5W. When the electronic device turns off the camera, reduces the screen brightness, or ends 5G data transmission, the system load can be reduced to below the load threshold.

[0101] The second condition is used to determine whether the output voltage of the first power supply unit 110 has recovered. When the first power supply voltage is greater than the first voltage threshold, the terminal voltage of the first power supply unit 110 can recover from the drop state to a safe operating range, and the first power supply unit 110 can provide a stable voltage output to the system bus 20. At this time, the second power supply unit 120 can disconnect from power supply, and the second power supply unit 120 can retain power to cope with possible subsequent voltage drops.

[0102] It should be noted that the first voltage threshold in the second condition can be the same as the first voltage threshold when the second power supply unit 120 is triggered to intervene, or it can be higher than the first voltage threshold when the second power supply unit 120 is triggered to intervene. Setting the first voltage threshold for exit determination to be higher than the first voltage threshold for intervention determination can create a hysteresis characteristic, which can prevent the second power supply unit 120 from frequently connecting and disconnecting.

[0103] The third condition is used to determine whether the voltage difference between the first power supply unit 110 and the second power supply unit 120 is within a safe range. When the difference between the first power supply voltage and the second power supply voltage is less than the second voltage threshold, the voltage difference between the two power supply units is small, and no significant voltage jump will occur on the system bus 20 after the first power supply circuit is disconnected. The second voltage threshold can be set according to the tolerance of the electronic equipment to voltage fluctuations.

[0104] For example, the second voltage threshold can be set to a value in the range of 50mV to 200mV. When the difference between the first supply voltage and the second supply voltage is less than this threshold, disconnecting the first supply circuit will not have a significant impact on the voltage stability of the system bus 20.

[0105] It should be noted that the processor 40 can periodically check whether the above three conditions are met. The processor 40 can obtain relevant parameters using either polling or interrupt methods. The processor 40 can comprehensively evaluate the satisfaction of the target conditions based on preset decision logic.

[0106] In one implementation, the processor 40 can send a disconnect signal to the control module 30 when any one of the first, second, and third conditions is met. This implementation allows the second power supply unit 120 to disconnect from power supply as quickly as possible, thereby reducing the power consumption of the second power supply unit 120.

[0107] In another implementation, the processor 40 can send a disconnect signal to the control module 30 when the first, second, and third conditions are met simultaneously. This implementation ensures that the first power supply circuit is disconnected only when multiple safety conditions are met, thus improving the safety of the disconnection action and preventing the voltage of the system bus 20 from dropping again due to premature disconnection.

[0108] In another implementation, the processor 40 can send a disconnect signal to the control module 30 when the first and third conditions are met. This implementation disconnects the first power supply circuit while ensuring load reduction and voltage differential safety, thus balancing safety and energy efficiency.

[0109] It should be noted that after receiving a disconnect signal from the processor 40, the control module 30 can control the switching unit 310 to disconnect the first power supply circuit. The control module 30 can disconnect the first power supply circuit by controlling the power switching device in the switching unit 310 to enter the disconnect state. After the first power supply circuit is disconnected, the second power supply unit 120 can stop supplying power to the system bus 20, and the electronic equipment can return to the normal operating state where it is powered only by the first power supply unit 110.

[0110] By adopting the technical solution of this embodiment, and by setting multiple judgment conditions including system load, first supply voltage, and voltage difference, this technical solution can ensure that the first power supply circuit is disconnected only when the system load decreases, the output voltage of the first power supply unit 110 recovers, and the voltage difference between the two power supply units is safe. This avoids the voltage of the system bus 20 from dropping again due to premature disconnection, thus improving the stability and reliability of the power supply to electronic devices. Simultaneously, this technical solution implements flexible exit control logic through software decision-making, allowing adjustment of judgment conditions according to different application scenarios and safety requirements, enhancing the adaptability of the electronic device power management system.

[0111] Furthermore, this embodiment employs an asymmetric control method combining hardware activation and software deactivation, achieving an optimized balance between rapid response and safe exit. The detection unit 320, based on hardware circuitry, enables microsecond-level rapid activation of the first power supply circuit, allowing it to intervene in the second power supply unit 120 the instant a voltage drop occurs. The processor 40, based on software decision-making, safely disconnects the first power supply circuit. By comprehensively considering system operating status and voltage conditions, the processor 40 can precisely control the exit timing of the second power supply unit 120 while ensuring safety. This asymmetric control method guarantees both rapid interception of transient voltage drops and the safety and controllability of the exit process.

[0112] Meanwhile, the technical solution of this embodiment realizes flexible exit control logic through software decision-making, which can adjust the judgment conditions according to different application scenarios and security requirements, thereby enhancing the adaptability of the power management system of electronic devices.

[0113] Please refer to Figure 4 , Figure 4 This is a fourth schematic diagram of an electronic device provided in an embodiment of this application.

[0114] Based on the above embodiments, as an optional embodiment, such as... Figure 4 As shown, the control module 30 may also include a communication port 330. The communication port 330 is electrically connected to the switching unit 310. The communication port 330 can receive a disconnect signal sent by the processor 40.

[0115] The switching unit 310 can respond to a disconnection signal to disconnect the first power supply circuit, thereby stopping the second power supply unit 120 from supplying power to the system bus 20.

[0116] For example, communication port 330 may refer to an interface circuit in control module 30 used to receive external control signals. Communication port 330 enables signal transmission between processor 40 and control module 30. Communication port 330 can convert disconnect signals sent by processor 40 into control signals within control module 30.

[0117] Optionally, the communication port 330 can be a general-purpose input / output interface. This general-purpose input / output interface can receive a high-level signal or a low-level signal output by the processor 40 as a disconnect signal. This general-purpose input / output interface can trigger the disconnection action of the switching unit 310 through a level change.

[0118] Optionally, communication port 330 can be a serial communication interface. This serial communication interface can be an I2C interface, an SPI interface, or a UART interface. Processor 40 can send a data frame containing a disconnect command to control module 30 through this serial communication interface. Communication port 330 can parse the data frame and generate a corresponding disconnect signal.

[0119] After receiving a disconnect signal from the processor 40, the communication port 330 can transmit the disconnect signal to the switching unit 310. The switching unit 310 can respond to the disconnect signal by controlling the power switching device to enter an off state. The switching unit 310 can disconnect the first power supply circuit between the second power supply unit 120 and the system bus 20. After the first power supply circuit is disconnected, the second power supply unit 120 can stop supplying power to the system bus 20.

[0120] Optionally, the control module 30 may also include hardware logic gates. These hardware logic gates may be electrically connected to the communication port 330 and the switching unit 310, respectively.

[0121] For example, the hardware logic gate circuit can refer to the circuit in the control module 30 used to implement the logic processing of the disconnect signal. The hardware logic gate circuit can receive the disconnect signal from the communication port 330. The hardware logic gate circuit can perform logical operations on the received disconnect signal. The hardware logic gate circuit can output a control signal to the switching unit 310 according to the result of the logical operation.

[0122] Optionally, the hardware logic gate circuit may include an OR gate circuit. The input of the OR gate circuit may be electrically connected to the communication port 330 to receive a disconnect signal sent by the processor 40. The output of the OR gate circuit may be electrically connected to the switching unit 310 to output a disconnect control signal. When either input of the OR gate circuit receives a valid signal, the OR gate circuit may output a disconnect control signal to control the switching unit 310 to disconnect the first power supply circuit.

[0123] Optionally, the hardware logic gate circuit may include an AND gate circuit. The input of the AND gate circuit may be electrically connected to the communication port 330. The output of the AND gate circuit may be electrically connected to the switching unit 310. The AND gate circuit can output a disconnect control signal when multiple inputs simultaneously meet a specific logic level.

[0124] Optionally, the hardware logic gate circuit can also be electrically connected to the detection unit 320.

[0125] For example, the hardware logic gate circuit can simultaneously receive a disconnect signal from the detection unit 320 and a disconnect signal from the communication port 330. The hardware logic gate circuit can perform logic synthesis on these two disconnect signals. The hardware logic gate circuit can trigger the switching unit 310 to disconnect the first power supply circuit when either disconnect signal is valid.

[0126] It should be noted that when the hardware logic gate is implemented using an OR gate, the first input of the OR gate can be electrically connected to the detection unit 320 to receive a disconnect signal based on voltage comparison, and the second input of the OR gate can be electrically connected to the communication port 330 to receive a disconnect signal sent by the processor 40. When the detection unit 320 detects that the second target voltage is greater than the second supply voltage, the detection unit 320 can output a disconnect signal to the first input of the OR gate. When the processor 40 determines that the target condition is met, the processor 40 can output a disconnect signal to the second input of the OR gate through the communication port 330. The OR gate can output a disconnect control signal to the switching unit 310 when a disconnect signal is received at either input, and the OR gate can realize the logic synthesis of hardware disconnect path and software disconnect path.

[0127] It should be noted that by setting hardware logic gates, the control module 30 can simultaneously support both automatic disconnection based on hardware detection and active disconnection based on software decision. The hardware logic gates can logically integrate the hardware disconnection signal from the detection unit 320 and the software disconnection signal from the processor 40. The hardware logic gates can ensure that the first power supply circuit can be reliably disconnected when either disconnection condition is met.

[0128] By adopting the technical solution of this embodiment, the control module 30 realizes signal communication with the processor 40 through the communication port 330. The control module 30 can receive the disconnection signal sent by the processor 40 after comprehensive judgment based on the system operating status, thereby realizing flexible control of the timing of disconnection of the first power supply circuit at the software level. The communication port 330 provides the processor 40 with a channel to actively control the second power supply unit 120 to disconnect from power supply. The communication port 330 enables the electronic device to optimize the usage strategy of the second power supply unit 120 according to the actual needs of the application scenario.

[0129] Furthermore, by setting up hardware logic gates, the technical solution of this embodiment achieves logical integration of hardware disconnection paths and software disconnection paths. The hardware logic gates can simultaneously receive a hardware disconnection signal based on voltage comparison from the detection unit 320 and a software disconnection signal based on system state judgment from the processor 40. The hardware logic gates synthesize the two disconnection signals through logical operations and control the switching unit 310 to perform the disconnection action.

[0130] The process of load regulation for processor 40 is described below.

[0131] Please refer to Figure 5 , Figure 5 This is the fifth schematic diagram of an electronic device provided in the embodiments of this application.

[0132] like Figure 5 As shown, the electronic device may also include a load module 50. The load module 50 is electrically connected to the system bus 20 and to the processor 40.

[0133] For example, load module 50 refers to a functional module in an electronic device that consumes electrical energy. Load module 50 may include a display module, communication module, camera module, audio module, sensor module, storage module, etc. Each functional module in load module 50 can obtain operating power through system bus 20. The operating status of each functional module in load module 50 can be controlled by processor 40.

[0134] For example, system load refers to the total power consumed by electronic devices from system bus 20 at the current moment. System load is equal to the sum of the power consumption of each operating functional module in load module 50. System load can increase when more functional modules in load module 50 are active. System load can also increase when functional modules in load module 50 are operating at higher frequencies or with greater output strength. Processor 40 can reduce system load by shutting down some functional modules in load module 50.

[0135] It should be noted that the electrical connection between the load module 50 and the system bus 20 enables the transmission of electrical energy. The system bus 20 provides operating voltage and current to each functional module in the load module 50. The total power consumed by the load module 50 from the system bus 20 constitutes the system load of the electronic equipment. The more functional modules operating in the load module 50 and the higher their operating frequency, the greater the system load.

[0136] It should be noted that the electrical connection between the load module 50 and the processor 40 enables the transmission of control signals. The processor 40 can send enable signals, disable signals, or operating parameter configuration signals to each functional module in the load module 50 via the control bus. The processor 40 can control the opening, closing, or switching of operating modes of each functional module in the load module 50. The processor 40 can change the system load by adjusting the operating state of the load module 50.

[0137] Based on this, such as Figure 5 As shown, the control module 30 can generate an interrupt signal in response to the first target voltage being less than or equal to the first voltage threshold.

[0138] The processor 40 is communicatively connected to the control module 30. The processor 40 can respond to interrupt signals to obtain power consumption information of the electronic device's application or to obtain the priority of the electronic device's application.

[0139] In one implementation, the processor 40 can shut down applications sequentially in descending order of power consumption based on the power consumption information of the electronic device's applications, so that the system load of the electronic device is less than or equal to a load threshold.

[0140] In another implementation, the processor 40 may close applications in order of increasing priority based on the priority of the electronic device's applications, so that the system load of the electronic device is less than or equal to a load threshold.

[0141] It should be noted that when the control module 30 detects that the first target voltage is less than or equal to the first voltage threshold, the control module 30 can generate an interrupt signal while simultaneously turning on the first power supply circuit. The control module 30 can send the interrupt signal to the processor 40 via the interrupt signal line. Upon receiving the interrupt signal, the processor 40 can suspend the execution of the current task and jump to the interrupt service routine to handle the voltage drop event.

[0142] For example, power consumption information refers to the power consumption data of each application during operation. Power consumption information may include, but is not limited to, the average power consumption value, peak power consumption value, or real-time power consumption value of the application. The processor 40 can obtain the power consumption information of each application through a power monitoring unit or the power management interface of the operating system. The processor 40 can identify high-power applications based on the power consumption information.

[0143] It should be noted that the power consumption information of an application can be related to the number of functional modules in the load module 50 that the application calls. For example, the power consumption of a camera application may primarily come from the camera module and the display module. The power consumption of a video playback application may primarily come from the display module and the audio module. The power consumption of a social application may primarily come from the communication module and the display module. The processor 40 can reduce the workload of the corresponding functional modules in the load module 50 by shutting down high-power applications, thereby reducing the system load.

[0144] For example, priority refers to the importance of each application in the allocation of system resources. Priorities can be categorized based on application type, user settings, or system state. For instance, core system processes may have the highest priority, call functions may have a high priority, and background applications may have a lower priority. The processor 40 can obtain the priority information of each application from the operating system's process management module.

[0145] In the first embodiment described above, the processor 40 can obtain power consumption information for all currently running applications within an interrupt service routine. The processor 40 can then sort the applications based on this power consumption information. The processor 40 can prioritize closing the application with the highest power consumption. After closing an application, the processor 40 can reassess the system load. If the system load remains above a load threshold, the processor 40 can continue to close the next highest power consumption application, and this process can be repeated until the system load drops below the load threshold.

[0146] In the second embodiment described above, the processor 40 can obtain the priorities of all currently running applications within an interrupt service routine. The processor 40 can then sort the applications according to their priorities. The processor 40 can prioritize closing the lowest priority application. This embodiment can reduce system load while ensuring the continuous operation of important functions. The processor 40 can retain the operation of high-priority applications such as calls and navigation, while prioritizing the closure of low-priority applications such as background synchronization and automatic updates.

[0147] Optionally, the processor 40 can make application shutdown decisions by comprehensively considering power consumption information and priority information. The processor 40 can prioritize shutting down high-power applications among low-priority applications. The processor 40 can calculate the shutdown priority of each application through weighted calculations, and determine the shutdown order of applications based on this priority.

[0148] For example, processor 40 can close an application by terminating the application process. Processor 40 can send a termination command to the operating system. The operating system can respond to the termination command by stopping the execution of the corresponding application and releasing the processor and memory resources occupied by the application. After the application stops running, it may no longer call the functional modules in load module 50, or the application may reduce the frequency of calling the functional modules in load module 50, thereby reducing the power consumption of load module 50 and reducing the system load.

[0149] Optionally, the processor 40 can also record the frequency and duration of the second power supply unit 120's intervention. The processor 40 can record the intervention time each time the first power supply circuit is turned on. The processor 40 can record the exit time each time the first power supply circuit is turned off. The processor 40 can calculate the duration of this intervention based on the intervention and exit times. The processor 40 can count the number of interventions of the second power supply unit 120 within a preset time window.

[0150] For example, the preset time window can be 1 minute to 10 minutes. The processor 40 can use a sliding window method to count the intervention frequency. The processor 40 can store information such as the intervention time and duration in the memory for analyzing the power supply health status of the electronic device.

[0151] Optionally, the processor 40 may control the electronic device to enter an energy-saving mode in response to the number of times the second power supply unit 120 intervenes within a unit time exceeding a frequency threshold. This unit time may be 1 minute. The frequency threshold may be 5 times. For example, when the processor 40 detects that the number of times the second power supply unit 120 intervenes within 1 minute reaches 5 times, the processor 40 may determine that the electronic device is experiencing frequent voltage drop events.

[0152] For example, energy-saving mode refers to a low-power operating state of an electronic device. In energy-saving mode, processor 40 can reduce the processor's operating frequency, reduce the screen brightness of the display module in the load module 50, disable background services of non-essential functional modules in the load module 50, limit network data transmission of the communication module in the load module 50, and reduce the shooting frame rate of the camera module in the load module 50. Energy-saving mode can significantly reduce the power consumption of the load module 50 and significantly reduce the system load of the electronic device.

[0153] Optionally, the processor 40 can stop automatically triggering the intervention of the second power supply unit 120 after entering the energy-saving mode. The processor 40 can achieve this function by sending a prohibition signal to the control module 30. In response to the prohibition signal, the control module 30 can prevent the first power supply circuit from conducting even if it detects that the first target voltage is less than or equal to the first voltage threshold. This avoids frequent charging and discharging of the second power supply unit 120, thereby extending the cycle life of the second power supply unit 120 and protecting its safety.

[0154] Optionally, the processor 40 can display battery status information to the user via a display module in the load module 50 during power-saving mode. This battery status information may include text or icon prompts. The text prompt may read, "The system has entered power-saving mode to protect the auxiliary battery." The battery status information may also suggest that the user close high-power applications or charge the electronic device.

[0155] Optionally, the processor 40 can set exit conditions for the energy-saving mode. These exit conditions may include the user manually turning off the energy-saving mode, the electronic device being connected to an external charging device, or the power level of the first power supply unit 110 being restored to a preset power threshold. When the exit conditions are met, the processor 40 can send a recovery signal to the control module 30, and the processor 40 can remove the restriction on the intervention of the second power supply unit 120.

[0156] It should be noted that by recording the frequency and duration of intervention of the second power supply unit 120, the processor 40 can monitor the power supply health of the electronic device. Frequent interventions may indicate performance degradation of the first power supply unit 110, excessive system load, or the presence of applications with abnormal power consumption. The processor 40 can optimize power management strategies based on this historical data, and can prompt the user to replace the battery or optimize the system when necessary through the display module in the load module 50.

[0157] By adopting the technical solution of this embodiment, the electronic device achieves effective management and regulation of the system load by setting up a load module 50 and establishing a connection between the load module 50, the system bus 20, and the processor 40. The load module 50 obtains operating power from the system bus 20, and the total power consumption of the load module 50 constitutes the system load of the electronic device. The processor 40 can flexibly adjust the size of the system load by controlling the working state of each functional module in the load module 50.

[0158] Upon responding to an interrupt signal generated by the control module 30, the processor 40 can immediately initiate a load regulation program when a voltage drop event occurs. By acquiring power consumption or priority information of the applications, the processor 40 can intelligently select which applications to shut down, ensuring the normal operation of core functions while reducing system load. By sequentially shutting down applications in order of power consumption from high to low or priority from low to high, the processor 40 can reduce the system load to a safe range with minimal cost, thus working in conjunction with the compensation function of the second power supply unit 120 to address the voltage drop problem.

[0159] Furthermore, by recording the frequency and duration of intervention of the second power supply unit 120 and entering energy-saving mode when frequent intervention occurs, the technical solution of this embodiment achieves continuous monitoring and protection of the usage status of the second power supply unit 120. The processor 40 can identify abnormally frequent intervention situations. The processor 40 can avoid overuse of the second power supply unit 120 by entering energy-saving mode and stopping the automatic triggering of intervention actions of the second power supply unit 120, thereby extending the service life of the second power supply unit 120.

[0160] The above embodiments describe the process by which the second power supply unit 120 supplies power to the system bus 20 and the processor 40 performs load regulation. To ensure that the second power supply unit 120 can continue to provide effective voltage compensation during the next voltage drop event, the electronic device of this application embodiment also supports charging the second power supply unit 120 to maintain its power level. The process by which the first power supply unit 110 charges the second power supply unit 120 will be described below.

[0161] Please refer to Figure 6 , Figure 6 This is a sixth schematic diagram of an electronic device provided in an embodiment of this application.

[0162] like Figure 6 As shown, the electronic device may also include a power supply module 60. The power supply module 60 may be electrically connected to the system bus 20 and the second power supply unit 120 respectively to form a second power supply circuit.

[0163] The processor 40 can also communicate with the power supply module 60. In response to the second power supply unit 120 stopping power supply to the system bus 20 and the second power supply voltage being less than a third voltage threshold, the processor 40 can send a charging signal to the power supply module 60.

[0164] The power supply module 60 can respond to a charging signal and turn on the second power supply circuit so that the first power supply unit 110 can charge the second power supply unit 120.

[0165] For example, the power replenishment module 60 refers to a circuit module in an electronic device used to control the charging process of the second power supply unit 120. The power replenishment module 60 can regulate the charging current and charging voltage of the second power supply unit 120. The power replenishment module 60 can ensure the charging safety of the second power supply unit 120.

[0166] For example, the second power supply circuit refers to the current path through which the first power supply unit 110 transmits charging power to the second power supply unit 120. In the off state, the second power supply circuit can isolate the electrical connection between the first power supply unit 110 and the second power supply unit 120. In the on state, the second power supply circuit allows charging current to flow from the system bus 20 through the power replenishment module 60 to the second power supply unit 120.

[0167] It should be noted that the electrical connection between the power supply module 60 and the system bus 20 enables it to obtain charging power from the first power supply unit 110. The system bus 20 can provide the voltage and current required for charging to the power supply module 60 through this electrical connection. The electrical connection between the power supply module 60 and the second power supply unit 120 enables it to deliver charging power to the second power supply unit 120. The power supply module 60 can apply regulated charging current and charging voltage to the second power supply unit 120 through this electrical connection.

[0168] It should be noted that the communication connection between the processor 40 and the charging module 60 enables control of the charging process. The processor 40 can send charging signals, charging parameter setting signals, or charging stop signals to the charging module 60 through this communication connection. The charging module 60 can also use this communication connection to provide feedback to the processor 40 on charging status information, charging current information, or charging voltage information.

[0169] For example, the third voltage threshold refers to the voltage determination condition that triggers the charging process of the second power supply unit 120. The third voltage threshold can be determined based on the rated voltage and discharge characteristics of the second power supply unit 120. For example, the third voltage threshold can be set to 80% to 95% of the rated voltage of the second power supply unit 120. Setting the third voltage threshold can ensure that the second power supply unit 120 is ready to respond to the next voltage drop event when it is in a state of sufficient power.

[0170] It should be noted that the processor 40 can continuously monitor the second supply voltage of the second power supply unit 120. The processor 40 can continue to acquire the second supply voltage even after the second power supply unit 120 stops supplying power to the system bus 20. The processor 40 can compare the acquired second supply voltage with a third voltage threshold. When the processor 40 detects that the second supply voltage is less than the third voltage threshold, the processor 40 can determine that the second power supply unit 120 needs to be recharged.

[0171] It should be noted that when the processor 40 determines that the second power supply unit 120 needs to be charged, the processor 40 can generate a charging signal. The processor 40 can send the charging signal to the power replenishment module 60 via a communication connection. This charging signal can be a digital signal or an analog signal.

[0172] For example, the power replenishment module 60 can activate the charging control circuit upon receiving a charging signal. The power replenishment module 60 can control the charging switch to switch from an off state to an on state. The power replenishment module 60 can establish a second power supply circuit by activating the charging switch. After the second power supply circuit is activated, the first power supply unit 110 can provide charging current to the second power supply unit 120 through the system bus 20 and the power replenishment module 60. The first power supply unit 110 can replenish the power of the second power supply unit 120, and the first power supply unit 110 can increase the second power supply voltage.

[0173] In one embodiment, the power replenishment module 60 may include a buck charging circuit. This buck charging circuit can convert the voltage of the system bus 20 into a charging voltage suitable for the second power supply unit 120. The buck charging circuit can adjust the charging voltage and charging current according to the charging characteristic curve of the second power supply unit 120.

[0174] In another embodiment, the power replenishment module 60 may include a charging protection circuit. The charging protection circuit can monitor the charging current, charging voltage, and temperature of the second power supply unit 120 during the charging process. The charging protection circuit can disconnect the second power supply circuit when the charging current is too high, the charging voltage is too high, or the temperature is abnormal. The charging protection circuit can prevent the second power supply unit 120 from experiencing overcharging, overcurrent, or overheating during the charging process.

[0175] Optionally, the processor 40 can set charging stop conditions. These conditions may include any one of the following: the second supply voltage reaches the target charging voltage, the charging current decreases to a charging threshold, or the charging time reaches a preset duration. The processor 40 can send a charging stop signal to the charging module 60 when the charging stop condition is met. The charging module 60 can disconnect the second power supply circuit in response to the charging stop signal, thus terminating the charging process for the second power supply unit 120.

[0176] It should be noted that by setting a third voltage threshold as a charging trigger condition, the processor 40 can promptly initiate the charging and replenishment process after the power of the second power supply unit 120 drops to a certain level. This embodiment can prevent the second power supply unit 120 from being in a low-power state for a long time, thereby preventing the second power supply unit 120 from being damaged due to over-discharge, and ensuring that the second power supply unit 120 has sufficient power to provide voltage compensation for the system bus 20 when needed.

[0177] It should be noted that the processor 40 initiates the charging process only after the second power supply unit 120 stops supplying power to the system bus 20, thereby preventing the second power supply unit 120 from discharging and charging simultaneously. Simultaneously, this process prevents mutual interference between charging and discharging circuits, thereby improving energy conversion efficiency.

[0178] By adopting the technical solution of this embodiment, the electronic device realizes the charging and replenishing function of the second power supply unit 120 by setting up the power replenishment module 60 and establishing a second power supply circuit. The processor 40 monitors the second power supply voltage and triggers the charging process when the second power supply voltage is lower than the third voltage threshold. The processor 40 can automatically maintain the power of the second power supply unit 120, thereby ensuring that the second power supply unit 120 still has sufficient power to provide voltage compensation when the next voltage drop event occurs.

[0179] Furthermore, the power replenishment module 60 activates the second power supply circuit in response to a charging signal sent by the processor 40. The power replenishment module 60 can then use the power from the first power supply unit 110 to charge the second power supply unit 120, thus forming a closed-loop management system for power supply and charging. This embodiment ensures both the rapid intervention capability of the second power supply unit 120 during voltage drops and sufficient power for daily use, thereby improving the sustainability of the electronic device in responding to voltage drops.

[0180] Based on the above embodiments, as an optional embodiment, the processor 40 may send a stop charging signal to the power replenishment module 60 in response to the difference between the first supply voltage and the second supply voltage being less than a fourth voltage threshold.

[0181] The power supply module 60 can disconnect the second power supply circuit in response to a stop charging signal.

[0182] For example, the fourth voltage threshold refers to the voltage difference threshold at which the second power supply unit 120 is determined to be fully charged. The fourth voltage threshold can be set according to the charging characteristics and voltage balance requirements of the second power supply unit 120. The fourth voltage threshold can be set to 0.1V to 0.5V. For example, the fourth voltage threshold can be 0.2V, 0.3V, or 0.4V. When the difference between the first supply voltage and the second supply voltage is less than the fourth voltage threshold, the voltage difference between the first power supply unit 110 and the second power supply unit 120 is already small, and the second power supply unit 120 can approach the state of full charge.

[0183] Optionally, the processor 40 can continuously monitor the first supply voltage and the second supply voltage during the charging process. The processor 40 can calculate the voltage difference between the first supply voltage and the second supply voltage in real time. The processor 40 can compare the voltage difference with a fourth voltage threshold. When the processor 40 detects that the voltage difference is less than the fourth voltage threshold, the processor 40 can determine that the charging process of the second power supply unit 120 has been completed or is close to completion.

[0184] Optionally, the processor 40 can generate a stop charging signal upon determining that charging is complete. The processor 40 can send the stop charging signal to the charging module 60 via a communication connection. Upon receiving the stop charging signal, the charging module 60 can control the charging switch to switch from an on state to an off state. The charging module 60 can disconnect the second power supply circuit by disconnecting the charging switch. After the second power supply circuit is disconnected, the first power supply unit 110 can stop providing charging current to the second power supply unit 120.

[0185] Optionally, the fourth voltage threshold may be less than the second voltage threshold.

[0186] It should be noted that both the second and fourth voltage thresholds are voltage difference determination thresholds, but their application scenarios differ. The second voltage threshold is used to determine whether the voltage difference between the first power supply unit 110 and the second power supply unit 120 is within a safe range. This determination can serve as one of the conditions for disconnecting the first power supply circuit, ensuring that the voltage of the system bus 20 does not experience a significant jump when the second power supply unit 120 disconnects from power supply. The fourth voltage threshold is used to determine whether the voltage difference between the first power supply unit 110 and the second power supply unit 120 is sufficiently small during the charging process. This determination can serve as a basis for terminating the charging process, ensuring that the second power supply unit 120 stops charging when it approaches a voltage equilibrium state.

[0187] By setting the fourth voltage threshold to be less than the second voltage threshold, this embodiment can ensure that the termination judgment standard of the charging process is stricter than the voltage difference safety standard for power supply withdrawal, thereby enabling the second power supply unit 120 to be in a more fully balanced voltage state after charging is completed.

[0188] Optionally, the fourth voltage threshold can be set to 20% to 80% of the second voltage threshold. For example, when the second voltage threshold is 0.2V, the fourth voltage threshold can be set to 0.05V to 0.15V. In a specific example, the second voltage threshold can be set to 0.2V and the fourth voltage threshold can be set to 0.1V. This setting can create an appropriate voltage gradient between the second and fourth voltage thresholds, which can ensure that the voltage balance of the second power supply unit 120 when charging is complete is better than the voltage difference safety requirements when it is de-energized.

[0189] It should be noted that by monitoring the difference between the first and second supply voltages to determine the charging completion status, the processor 40 can control the timing of the charging process termination based on the actual voltage balance. This technical solution can avoid overcharging the second power supply unit 120. In this embodiment, charging can be stopped in time when the first power supply unit 110 and the second power supply unit 120 reach voltage balance, thereby protecting the service life and safety of the second power supply unit 120.

[0190] By adopting the technical solution of this embodiment, the processor 40 determines the charging completion condition by comparing the difference between the first supply voltage and the second supply voltage, and the processor 40 realizes intelligent charging control based on voltage balance. When the difference between the first supply voltage and the second supply voltage is less than the fourth voltage threshold, the processor 40 can promptly send a stop charging signal to the power replenishment module 60 to terminate the charging process, thereby avoiding overcharging of the second power supply unit 120.

[0191] Based on the above embodiments, as an optional embodiment, the processor 40 may send a control signal to the power supply module 60 in response to the first power supply voltage being greater than the fifth voltage threshold.

[0192] The power supply module 60 can respond to a control signal, which can short-circuit the input and output terminals of the power supply module 60.

[0193] For example, the fifth voltage threshold refers to the voltage determination value for judging that the voltage of system bus 20 is in a normal and stable state. The fifth voltage threshold can be greater than the first voltage threshold. The fifth voltage threshold can be determined based on the rated operating voltage of system bus 20 and the normal operating voltage range of load module 50. The fifth voltage threshold can be set to 90% to 98% of the rated voltage of system bus 20.

[0194] It should be noted that the input terminal of the power supply module 60 refers to the port where the power supply module 60 connects to the system bus 20. The output terminal of the power supply module 60 refers to the port where the power supply module 60 connects to the second power supply unit 120. The power supply module 60 may include a shorting switch. This shorting switch can be connected between the input and output terminals of the power supply module 60. The power supply module 60 can achieve shorting or isolation between the input and output terminals by controlling the on / off state of this shorting switch.

[0195] It should be noted that the processor 40 can continue to monitor the first supply voltage after the second power supply unit 120 stops charging. The processor 40 can compare the acquired first supply voltage with a fifth voltage threshold. When the processor 40 detects that the first supply voltage is greater than the fifth voltage threshold, the processor 40 can determine that the voltage of the system bus 20 has returned to a stable and normal state. The processor 40 can generate a control signal and send it to the power replenishment module 60.

[0196] It should be noted that the power supply module 60 can control the short-circuit switch to turn on after receiving a control signal. The power supply module 60 can short-circuit its input and output terminals by turning on the short-circuit switch. After the input and output terminals are short-circuited, the system bus 20 can be directly electrically connected to the second power supply unit 120. This short-circuit state allows the first power supply unit 110 to charge the second power supply unit 120 with a larger charging current. This short-circuit state bypasses the charging control circuit and buck charging circuit inside the power supply module 60, thus improving charging efficiency.

[0197] Optionally, the processor 40 may send a control signal to the power supply module 60 when the first supply voltage is greater than a fifth voltage threshold and the system load is less than a preset load threshold. This control condition ensures that the short-circuit charging mode is only initiated when the system bus 20 has sufficient spare power. This control condition can prevent the short-circuit charging process from affecting the normal power supply to the load module 50.

[0198] By adopting the technical solution of this embodiment, the processor 40 identifies the voltage adequacy state of the system bus 20 by determining whether the first supply voltage is greater than the fifth voltage threshold. In this state, the processor 40 can control the power replenishment module 60 to short-circuit the input and output terminals. This short-circuit charging mode can fully utilize the surplus power of the first power supply unit 110 to provide a larger charging current for the second power supply unit 120, thereby accelerating the charging process of the second power supply unit 120, improving charging efficiency, and enabling the second power supply unit 120 to return to the standby state more quickly to cope with subsequent voltage drop events.

[0199] Based on the above embodiments, as an optional embodiment, the power replenishment module 60 may further include a boost circuit.

[0200] The processor 40 can send a boost signal to the power supply module 60 in response to the first supply voltage being less than or equal to the sixth voltage threshold.

[0201] The power supply module 60 can respond to the boost signal and increase the power supply voltage of the second power supply circuit through the boost circuit.

[0202] For example, a boost circuit refers to a voltage conversion circuit capable of converting an input voltage into a higher output voltage. A boost circuit may include a boost converter, a switching transistor, an inductor, and a filter capacitor. The boost circuit may employ a boost-type DC-DC converter topology. The boost circuit can adjust the output voltage according to a control signal.

[0203] For example, the sixth voltage threshold refers to the voltage determination value for determining that the voltage of system bus 20 is in a low state. The sixth voltage threshold can be greater than the first voltage threshold and less than the fifth voltage threshold. The sixth voltage threshold can be set to 70% to 85% of the rated voltage of system bus 20. For example, when the rated voltage of system bus 20 is 3.7V, the sixth voltage threshold can be set to 2.8V, 3.0V, or 3.2V.

[0204] Optionally, the processor 40 can continuously monitor the first supply voltage during charging. The processor 40 can compare the acquired first supply voltage with a sixth voltage threshold. When the processor 40 detects that the first supply voltage is less than or equal to the sixth voltage threshold, the processor 40 can determine that the voltage of the system bus 20 is at a low level. The processor 40 can determine that the output voltage of the first power supply unit 110 is insufficient to directly provide effective charging for the second power supply unit 120.

[0205] Optionally, the processor 40 can generate a boost signal after determining that boost charging is required. The processor 40 can send the boost signal to the power supply module 60 via a communication connection. The boost signal may include a boost start command and target output voltage information.

[0206] Optionally, the power supply module 60 can activate the boost circuit upon receiving a boost signal. The boost circuit can convert the lower voltage obtained from the system bus 20 into a higher voltage sufficient to charge the second power supply unit 120. The boost circuit can increase the supply voltage in the second power supply circuit. The boost circuit enables the first power supply unit 110 to provide charging current to the second power supply unit 120 even when the output voltage is low.

[0207] Optionally, the output voltage of the boost circuit can be dynamically adjusted according to the current voltage of the second power supply unit 120 and the charging demand. The charging module 60 can monitor the second power supply voltage and control the output voltage of the boost circuit to be 0.3V to 0.8V higher than the second power supply voltage. This voltage difference can ensure a stable flow of charging current.

[0208] By adopting the technical solution of this embodiment, the power replenishment module 60 realizes the boost charging function when the voltage of the system bus 20 is low by configuring a boost circuit. The processor 40 identifies the working state that requires boost charging by judging whether the first supply voltage is less than or equal to the sixth voltage threshold. In this state, the processor 40 can control the power replenishment module 60 to start the boost circuit to increase the supply voltage of the second supply circuit, so that the first power supply unit 110 can provide effective charging for the second power supply unit 120 even when the output voltage is low, thereby improving the ability of the electronic device to maintain the power of the second power supply unit 120 under various power states.

[0209] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this application is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this application, and all such substitutions and modifications should fall within the scope of this application.

[0210] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this application is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this application, and all such substitutions and modifications should fall within the scope of this application.

Claims

1. An electronic device, comprising: The power supply module is electrically connected to the system bus. The power supply module includes a first power supply unit and a second power supply unit; The first power supply unit is used to supply power to the system bus; the internal resistance of the first power supply unit is greater than the internal resistance of the second power supply unit; The control module is electrically connected to the system bus and the second power supply unit, and is used to acquire a first target voltage of the system bus. In response to the first target voltage being less than or equal to a first voltage threshold, the control module controls the second power supply unit to supply power to the system bus. The second power supply unit is used at least to compensate for transient drops in the first target voltage. The first voltage threshold is related to the internal resistance of the first power supply unit.

2. The electronic device according to claim 1, wherein the control module comprises: The switching unit is electrically connected to the system bus and the second power supply unit, respectively. The detection unit, electrically connected to both the system bus and the switching unit, is used for: Obtain the first target voltage of the system bus; In response to the first target voltage being less than or equal to the first voltage threshold, an enable signal is sent to the switching unit; The switching unit is configured to, in response to the activation signal, connect the second power supply unit and the first power supply circuit of the system bus, so that the second power supply unit supplies power to the system bus.

3. The electronic device according to claim 2, wherein the detection unit is further electrically connected to the second power supply unit; the detection unit is further configured to: In response to the first power supply circuit being turned on, the second target voltage of the system bus and the second power supply voltage of the second power supply unit are obtained; In response to the second target voltage being greater than the second supply voltage, a disconnect signal is sent to the switching unit; The switching unit is configured to disconnect the first power supply circuit in response to the disconnection signal, thereby stopping the second power supply unit from supplying power to the system bus.

4. The electronic device according to claim 2, further comprising: The processor, electrically connected to the control module and communicatively connected to the power supply module, is used for: Obtain the first power supply voltage of the first power supply unit, the second power supply voltage of the second power supply unit, and the system load of the electronic device; In response to the fulfillment of the target condition, a disconnect signal is sent to the control module; The control module is also configured to, in response to the disconnection signal, control the second power supply unit to stop supplying power to the system bus; The target conditions include at least one of the following: The system load of the electronic device is less than or equal to the load threshold; The first supply voltage is greater than the first voltage threshold; The difference between the first supply voltage and the second supply voltage is less than the second voltage threshold.

5. The electronic device according to claim 4, wherein the control module further comprises: A communication port, electrically connected to the switching unit, is used to receive the disconnect signal sent by the processor; A switching unit is configured to disconnect the first power supply circuit in response to the disconnection signal, thereby stopping the second power supply unit from supplying power to the system bus.

6. The electronic device according to claim 4, wherein the control module is further configured to generate an interrupt signal in response to the first target voltage being less than or equal to the first voltage threshold; The processor is also communicatively connected to the control module and is further used for: In response to the interrupt signal, the power consumption information of the application of the electronic device or the priority of the application of the electronic device is obtained; Based on the power consumption information of the applications in the electronic device, the applications are closed sequentially in descending order of power consumption, so that the system load of the electronic device is less than or equal to the load threshold; or Applications on the electronic device are closed sequentially in ascending order of priority to reduce the system load of the electronic device to a level less than or equal to a load threshold.

7. The electronic device according to claim 4, further comprising: The power supply module is electrically connected to the system bus and the second power supply unit respectively to form a second power supply circuit; The processor is also communicatively connected to the power supply module and is also configured to send a charging signal to the power supply module in response to the second power supply unit stopping power supply to the system bus and the second power supply voltage being less than a third voltage threshold. The power replenishment module is used to activate the second power supply circuit in response to the charging signal, so that the first power supply unit charges the second power supply unit.

8. The electronic device according to claim 7, wherein the processor is further configured to send a stop charging signal to the charging module in response to the difference between the first supply voltage and the second supply voltage being less than a fourth voltage threshold; wherein the fourth voltage threshold is less than the second voltage threshold; The power replenishment module is also used to disconnect the second power supply circuit in response to the stop charging signal.

9. The electronic device according to claim 7, wherein the processor is further configured to send a control signal to the power replenishment module in response to the first power supply voltage being greater than a fifth voltage threshold; The power replenishment module is also used to respond to the control signal by short-circuiting the input terminal of the power replenishment module with the output terminal.

10. The electronic device according to claim 7, wherein the power replenishment module further comprises a boost circuit; The processor is further configured to send a boost signal to the power supply module in response to the first supply voltage being less than or equal to a sixth voltage threshold. The power replenishment module is also used to increase the power supply voltage of the second power supply circuit through the boost circuit in response to the boost signal.

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