CN115940329A - Startup and shutdown management circuit and electronic equipment - Google Patents
Startup and shutdown management circuit and electronic equipment Download PDFInfo
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- CN115940329A CN115940329A CN202211443706.6A CN202211443706A CN115940329A CN 115940329 A CN115940329 A CN 115940329A CN 202211443706 A CN202211443706 A CN 202211443706A CN 115940329 A CN115940329 A CN 115940329A
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Abstract
The application provides a startup and shutdown management circuit and an electronic device, wherein the startup and shutdown management circuit comprises a power supply control module, a power supply control module and a power failure control module, wherein the power supply control module is configured to respectively conduct a path between a power supply and a load and a path between a battery and the load according to a power-on signal, and disconnect the path between the power supply and the load according to a power-off signal; the shutdown module is configured to obtain a shutdown signal according to the power failure signal; a battery power supply control module configured to maintain a path between the battery and the load when the load operates, and to disconnect the path between the battery and the load when the load stops operating. According to the power supply control module, the power supply and the load are disconnected according to the power failure signal, the shutdown module generates the shutdown signal according to the power failure signal to enable the load to be normally shut down, and the battery power supply control module disconnects the path between the battery and the load when the load stops working, so that the load can be normally shut down and system files can be saved when the abnormal power failure occurs, and the system is prevented from being crashed.
Description
Technical Field
The application belongs to the technical field of electronic circuits, and particularly relates to a startup and shutdown management circuit and electronic equipment.
Background
In daily life, the electronic device is often subjected to abnormal system conditions caused by abnormal power failure, for example, sudden power failure or power failure causes system breakdown of a home computer or an intelligent home, so that data files in a memory of the home computer or the intelligent home are damaged.
At present, no good solution exists for the problem of system abnormity caused by abnormal power failure of electronic equipment, and system files of a user before the abnormal power failure are damaged or lost, and the system is crashed, so that the use experience of the user is greatly influenced.
Disclosure of Invention
An object of the application is to provide a power on/off management circuit, aim at solving traditional power on/off management circuit and lead to the system file to damage because the unconventional falls down, the problem of system breakdown.
In order to achieve the above object, in a first aspect, an embodiment of the present application provides a power on/off management circuit, which includes a power supply control module, a power off module, and a battery supply control module;
the power supply control module is electrically connected with the shutdown module and the battery power supply control module respectively;
the power supply control module is configured to respectively conduct a path between a power supply and a load and a path between a battery and the load according to a power-on signal, and disconnect the path between the power supply and the load according to a power-off signal;
the shutdown module is configured to obtain a shutdown signal according to the power-down signal and send the shutdown signal to the load;
the battery power supply control module is configured to maintain a path between the battery and the load when the load operates, and to disconnect the path between the battery and the load when the load stops operating.
In a possible implementation manner of the first aspect, the power on/off management circuit further includes a battery charging/discharging module;
the battery charging and discharging module is electrically connected with the battery power supply control module;
the battery charging and discharging module is configured to conduct a path between the battery and the power supply when the battery voltage is less than the power supply voltage; and when the battery voltage is greater than or equal to the power supply voltage, disconnecting the path between the battery and the power supply.
In another possible implementation manner of the first aspect, the power supply control module includes a first flip-flop, a first MOS transistor, a second flip-flop, a third and gate, and a fourth or gate;
the second pin of the first trigger is electrically connected with the power supply, the third pin of the first trigger is electrically connected with the grid electrode of the first MOS tube and the third pin of the second trigger respectively, the second pin of the second trigger is electrically connected with the output end of the third AND gate, two input ends of the third AND gate are electrically connected with one input end of the fourth OR gate, the other input end of the fourth OR gate is electrically connected with the power supply, and the output end of the fourth OR gate is electrically connected with the shutdown module and the battery power supply control module respectively.
In another possible implementation manner of the first aspect, the power supply control module further includes a first interface, a second resistor, a fourth resistor, a fifth resistor, a first diode, a third diode, a fourth diode, a first capacitor, and a fifth capacitor;
the first interface is electrically connected with the power supply, a second pin of the first interface is electrically connected with one end of a second resistor, the other end of the second resistor is electrically connected with one end of a fourth resistor and one end of a fifth resistor respectively, the other end of the fourth resistor and one end of a first capacitor are electrically connected with a second pin of a first trigger, a third pin of the first trigger is electrically connected with a positive electrode of a third diode, a negative electrode of the third diode is electrically connected with a grid electrode of a first MOS (metal oxide semiconductor) tube, a positive electrode of the fourth diode and one end of the fifth capacitor respectively, a negative electrode of the fourth diode is electrically connected with a third pin of the second trigger, and the first pin of the first interface, the other end of the fifth resistor, the other end of the first capacitor and the other end of the fifth capacitor are all grounded.
In another possible implementation of the first aspect, the battery power control module includes a fifth operational amplifier, a second transistor, and a first resistor;
the third pin of the fifth operational amplifier is electrically connected with the power supply control module, the emitter of the second triode and one end of the first resistor respectively, the base of the second triode is electrically connected with the power supply control module, the second pin of the fifth operational amplifier is electrically connected with the load and the other end of the first resistor respectively, and the first pin of the fifth operational amplifier is electrically connected with the power supply control module.
In another possible implementation of the first aspect, the battery power control module further includes a sixth resistor, a second capacitor, a third capacitor, a second interface, and a third interface;
the first pin of the second interface is electrically connected with the other end of the first resistor, the second pin of the fifth operational amplifier, one end of the sixth resistor and one end of the second capacitor, the first pin of the fifth operational amplifier is electrically connected with the power supply control module, the other end of the sixth resistor, the other end of the second capacitor and the other end of the third capacitor, the other end of the third capacitor and the second pin of the second interface are grounded, the input end of the third interface is electrically connected with the shutdown module, and the output end of the third interface is electrically connected with the load.
In another possible implementation manner of the first aspect, the shutdown module includes a sixth and gate and an eighth or gate;
the two input ends of the sixth AND gate are electrically connected with the power supply, the output end of the sixth AND gate is electrically connected with the battery power supply control module, the two input ends of the eighth OR gate are electrically connected with the power supply, the output end of the eighth OR gate is electrically connected with the battery power supply control module, and the enabling end of the sixth AND gate and the enabling end of the eighth OR gate are electrically connected with the power supply control module.
In another possible implementation of the first aspect, the battery charging and discharging module includes a third transistor, a seventh or gate, a ninth operational amplifier, a tenth operational amplifier, and an eighth resistor;
the collector of the third triode is electrically connected with the power supply control module, the emitter of the third triode is electrically connected with the battery power supply control module, the base of the third triode is electrically connected with the output end of the seventh or gate, the first input pin of the seventh or gate is electrically connected with the output end of the ninth operational amplifier, the second input pin of the seventh or gate is electrically connected with the output end of the tenth operational amplifier, the first input pin of the tenth operational amplifier is electrically connected with one end of the eighth resistor and the battery power supply control module, the second input pin of the tenth operational amplifier is electrically connected with the other end of the eighth resistor and the first input pin of the ninth operational amplifier, and the second input pin of the ninth operational amplifier is electrically connected with the power supply.
In another possible implementation manner of the first aspect, the battery charge-discharge module further includes a second diode, a seventh resistor, a ninth resistor, a tenth resistor, a fourth capacitor, and a fourth interface;
the positive electrode of the second diode is electrically connected with the emitting electrode of the third triode, the negative electrode of the second diode is electrically connected with the battery power supply control module, one end of the seventh resistor and one end of the ninth resistor are electrically connected with the first input pin of the ninth operational amplifier, the second input pin of the tenth operational amplifier is electrically connected with the other end of the ninth resistor, the second pin of the fourth interface, one end of the tenth resistor and one end of the fourth capacitor, the output end of the tenth operational amplifier is electrically connected with the other end of the tenth resistor and the other end of the fourth capacitor, and the other end of the seventh resistor and the first pin of the fourth interface are grounded.
In a second aspect, an embodiment of the present application provides an electronic device, which includes the power on/off management circuit.
Compared with the prior art, the embodiment of the application has the advantages that: when the load works normally, the power supply and the battery supply power to the load. When the load is in an unconventional power failure, the power supply control module disconnects a path between a power supply and the load according to a power failure signal, the shutdown module generates a shutdown signal according to the power failure signal to normally shut down the load, and the battery power supply control module disconnects the path between the battery and the load when the load stops working, so that the load can be normally shut down and system files can be saved when the load is in the unconventional power failure, the system breakdown is prevented, and the use experience of a user is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power on/off management circuit according to an embodiment of the present disclosure;
fig. 2 is a circuit diagram of a power on/off management circuit according to an embodiment of the present disclosure.
Description of reference numerals:
the system comprises a power supply control module 1, a power-off module 2, a battery power supply control module 3, a battery charging and discharging module 4, a load 5 and a battery 6.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
At present, in daily life, a plurality of electronic devices with operating systems are generally available. However, when the electronic devices are powered off abnormally (for example, a sudden power failure), the internal files of the system are often damaged due to abnormal shutdown, and the system is crashed, which greatly affects the use experience of users. For example, when the computer is suddenly powered off, the computer is shut down abnormally. When a user restarts the computer next time, the user often finds that part of files are lost and the system is crashed, so that the use experience of the user on the computer is greatly influenced.
Therefore, the application provides a power on/off management circuit, which supplies power to a load through a power supply and a battery when the load works normally. When the load is in an unconventional power failure, the power supply control module disconnects a path between a power supply and the load according to a power failure signal, the shutdown module generates a shutdown signal according to the power failure signal to normally shut down the load, and the battery power supply control module disconnects the path between the battery and the load when the load stops working, so that the load can be normally shut down and system files can be saved when the load is in the unconventional power failure, the system breakdown is prevented, and the use experience of a user is greatly improved.
The power on/off management circuit provided by the present application is exemplarily described below with reference to the accompanying drawings: fig. 1 is a schematic structural diagram of a power on/off management circuit according to an embodiment of the present application, and as shown in fig. 1, for convenience of description, only parts related to the embodiment are shown, and detailed descriptions are as follows: illustratively, the power on/off management circuit 100 includes a power supply control module 1, a power off module 2 and a battery power supply control module 3.
The power supply control module 1 is electrically connected with the shutdown module 2 and the battery power supply control module 3 respectively.
And the power supply control module 1 is configured to conduct the paths between the power supply and the load 5 and between the battery 6 and the load 5 according to the power-on signal and disconnect the paths between the power supply and the load 5 according to the power-off signal.
And the shutdown module 2 is configured to obtain a shutdown signal according to the power-down signal and send the shutdown signal to the load 5.
A battery power supply control module 3 configured to maintain a path between the battery 6 and the load 5 when the load 5 operates, and to disconnect the path between the battery 6 and the load 5 when the load 5 stops operating.
In the embodiment of the present application, when the load 5 normally operates, the power supply control module 1 respectively turns on the path between the power supply and the load 5 and the path between the battery 6 and the load 5 according to the power-on signal, so that the power supply and the battery 6 simultaneously supply power to the load 5. The battery power supply control module 3 maintains a path between the battery 6 and the load 5 when the load 5 operates. When the load 5 is abnormally powered down, the power supply control module 1 cuts off a path between the power supply and the load 5 according to the power down signal. The shutdown module 2 obtains a shutdown signal according to the power-down signal and sends the shutdown signal to the load 5, so that the load 5 is normally shut down. When the load 5 stops working, the battery power supply control module 3 disconnects the path between the battery 6 and the load 5, so that the path between the load 5 and the power supply and the path between the battery 6 are completely cut off, the load 5 is completely powered down, normal shutdown of the load 5 during abnormal power failure is completed, storage of system files in the load 5 is effectively protected, damage caused by abnormal power failure is prevented, and system collapse is prevented. In addition, when the input power is recovered, the power supply control module 1 realizes a path between the self-starting conduction power and the load 5 according to the input voltage, so that the power supply continuously outputs electric energy to the load 5.
As shown in fig. 1, the power on/off management circuit 100 further includes a battery charging/discharging module 4.
The battery charge/discharge module 4 is electrically connected to the battery power supply control module 3.
A battery charge and discharge module 4 configured to conduct a path between the battery 6 and a power supply when the battery voltage is less than the power supply voltage; when the battery voltage is equal to or higher than the power supply voltage, the path between the battery 6 and the power supply is disconnected.
In the embodiment of the present application, the battery charging and discharging module 4 controls the charging and discharging process of the battery 6 by the power supply, and when the battery voltage is less than the power supply voltage, the path between the battery 6 and the power supply is conducted, so that the power supply charges the battery 6. When the battery voltage is greater than or equal to the power supply voltage, the path between the battery 6 and the power supply is disconnected, so that the battery 6 continuously supplies power to the load 5, and the path between the battery 6 and the power supply is not conducted again until the battery voltage is less than the power supply voltage, so that the power supply charges the battery 6.
Fig. 2 is a circuit diagram of a power on/off management circuit according to an embodiment of the present disclosure. As shown in fig. 2, the power supply control module 1 exemplarily includes a first flip-flop U1, a first MOS transistor Q1, a second flip-flop U2, a third and gate U3, and a fourth or gate U4.
The second pin of the first trigger U1 is electrically connected to a power supply, the third pin of the first trigger U3 is electrically connected to the gate of the first MOS transistor Q1 and the third pin of the second trigger U2, respectively, the second pin of the second trigger U2 is electrically connected to the output of the third and gate U3, two inputs of the third and gate U3 are electrically connected to one input of the fourth or gate U4, the other input of the fourth or gate U4 is electrically connected to the power supply, and the output of the fourth or gate U4 is electrically connected to the shutdown module 2 and the battery power supply control module 3, respectively.
In the embodiment of the application, the change of the power supply voltage is monitored in real time through the first trigger U1, and when the power supply voltage Vin _ DET obtains a rising edge signal and jumps from 0 to 1, the third pin of the first trigger U1 outputs a high level to turn on the first MOS transistor Q1, so that a path between the power supply and the load 5 is realized to serve as a main circuit for supplying power. Meanwhile, the high level of the power voltage Vin _ DET enables the fourth or gate U4 to output a high level, so that the second triode Q2 is turned on, and a path between the battery 6 and the load 5 is realized, that is, both the power supply and the battery 6 supply power to the load 5.
As shown in fig. 2, the power supply control module 1 further includes, for example, a first interface J1, a second resistor R2, a fourth resistor R4, a fifth resistor R5, a first diode D1, a third diode D3, a fourth diode D4, a first capacitor C1, and a fifth capacitor C5.
The first interface J1 is electrically connected with a power supply, a second pin of the first interface J1 is electrically connected with one end of a second resistor R2, the other end of the second resistor R2 is electrically connected with one end of a fourth resistor R4 and one end of a fifth resistor R5 respectively, the other end of the fourth resistor R4 and one end of a first capacitor C1 are electrically connected with a second pin of a first trigger U1, a third pin of the first trigger U1 is electrically connected with an anode of a third diode D3, a cathode of the third diode D3 is electrically connected with a grid of a first MOS tube Q1, an anode of the fourth diode D4 and one end of a fifth capacitor C5 respectively, a cathode of the fourth diode D4 is electrically connected with a third pin of the second trigger U2, and a first pin of the first interface J1, the other end of the fifth resistor R5, the other end of the first capacitor C1 and the other end of the fifth capacitor C5 are all grounded.
In the embodiment of the present application, the external power source is electrically connected through the first interface J1. The first diode D1 prevents the current of the battery 6 at the load end from flowing backwards to the power supply end after the power supply is abnormally powered off, and the electric quantity of the battery 6 is lost. The input voltage of the first trigger U1 is adjusted through the second resistor R2, the fifth resistor R5, the fourth resistor R4 and the first capacitor C1, and the first trigger U1 is triggered to generate a high-level or low-level signal, so that the first MOS transistor is controlled to be switched on or switched off. The first flip-flop U1 is protected by a third diode D3 and a fourth diode D4.
As shown in fig. 2, the battery power supply control module 3 exemplarily includes a fifth operational amplifier U5, a second transistor Q2, and a first resistor R1.
A third pin of the fifth operational amplifier U5 is electrically connected to the power supply control module 1, an emitter of the second triode Q2, and one end of the first resistor R1, respectively, a base of the second triode Q3 is electrically connected to the power supply control module 1, a second pin of the fifth operational amplifier U5 is electrically connected to the other end of the load 5 and the first resistor R1, respectively, and a first pin of the fifth operational amplifier U5 is electrically connected to the power supply control module 1.
In the embodiment of the present application, the voltage across the first resistor R1 Is obtained according to the flowing current Is, the fifth operational amplifier U5 outputs the high level Is _ DET according to the voltage across the first resistor R1, the voltage Is _ DET across the first resistor R1 and the power supply voltage Vin _ DET output the high level through the fourth or gate U4, so that the second transistor Q2 Is turned on, and the path between the battery 6 and the load 5 Is turned on, so that the battery 6 Is kept supplying power to the load 5 while the external power supply supplies power to the load 5, and when the external power supply suddenly fails, the load 5 can also be supplied power according to the battery 6 without abnormal power failure.
As shown in fig. 2, the battery power supply control module 3 further includes a sixth resistor R6, a second capacitor C2, a third capacitor C3, a second interface J2, and a third interface J3.
The first pin of the second interface J2 is respectively electrically connected with the other end of the first resistor R1, the second pin of the fifth operational amplifier U5, one end of the sixth resistor R6 and one end of the second capacitor C2, the first pin of the fifth operational amplifier U5 is respectively electrically connected with the power supply control module 1, the other end of the sixth resistor R6, the other end of the second capacitor C2 and the other end of the third capacitor C3, the other end of the third capacitor C3 and the second pin of the second interface J2 are grounded, the input end of the third interface J3 is electrically connected with the shutdown module 2, and the output end of the third interface J3 is electrically connected with the load 5.
In the embodiment of the present application, the second interface J2 is electrically connected to the load 5, and the third interface J3 is used to receive a shutdown signal, so that the load 5 is normally shutdown. The sixth resistor R6, the second capacitor C2 and the third capacitor C3 are matched with the fifth operational amplifier U5 to work.
As shown in fig. 2, the shutdown module 2 illustratively includes a sixth and gate U6 and an eighth or gate U8.
Two input ends of a sixth AND gate U6 are electrically connected with a power supply, an output end of the sixth AND gate U6 is electrically connected with the battery power supply control module 3, two input ends of an eighth OR gate U8 are electrically connected with the power supply, an output end of the eighth OR gate U8 is electrically connected with the battery power supply control module 3, and an enabling end of the sixth AND gate U6 and an enabling end of the eighth OR gate U8 are electrically connected with the power supply control module 1.
In the embodiment of the present application, when the fourth or gate U4 outputs a high level, the enable terminals of the sixth and gate U6 and the eighth or gate U8 are activated simultaneously, and the power voltage Vin _ DET is converted into a shutdown signal through the sixth and gate U6 and the eighth or gate U8, so that the load 5 is actively and normally shutdown.
As shown in fig. 2, the battery charging and discharging module 4 illustratively includes a third transistor Q3, a seventh or gate U7, a ninth operational amplifier U9, a tenth operational amplifier U10, and an eighth resistor R8.
The collector of the third triode Q3 is electrically connected with the power supply control module 1, the emitter of the third triode Q3 is electrically connected with the battery power supply control module 3, the base of the third triode Q3 is electrically connected with the output end of the seventh or gate U7, the first input pin of the seventh or gate U7 is electrically connected with the output end of the ninth operational amplifier U9, the second input pin of the seventh or gate U7 is electrically connected with the output end of the tenth operational amplifier U10, the first input pin of the tenth operational amplifier U10 is electrically connected with one end of the eighth resistor R8 and the battery power supply control module 3, the second input pin of the tenth operational amplifier U10 is electrically connected with the other end of the eighth resistor R8 and the first input pin of the ninth operational amplifier U9, and the second input pin of the ninth operational amplifier U9 is electrically connected with the power supply.
In the embodiment of the present application, when the battery voltage Vbattery is less than the power supply voltage Vin _ DET, the ninth operational amplifier U9 outputs a high level of the comparison voltage V _ comp, and the seventh or gate U7 outputs a high level according to the high level of the comparison voltage V _ comp, so that the third transistor Q3 conducts a path between the power supply and the battery 6, and the power supply charges the battery 6. Meanwhile, when the power supply charges the battery 6, the tenth operational amplifier U10 outputs a high level according to a voltage generated by a current flowing from the fifth pin to the sixth pin of the tenth operational amplifier U10 across the eighth resistor R8, so that the seventh or gate U7 continuously outputs a high level, the third transistor Q3 maintains a conductive state, and the power supply continuously charges the battery 6 until the battery voltage Vbattery is equal to the power supply voltage Vin _ DET.
When the battery voltage Vbattery is greater than the power supply voltage Vin _ DET, the ninth operational amplifier U9 outputs a low level of the comparison voltage V _ comp, the seventh or gate U7 outputs a low level according to the low level of the comparison voltage V _ comp, and the tenth operational amplifier U10 outputs a low level according to a voltage generated by a current flowing from the sixth pin to the fifth pin of the tenth operational amplifier U10 over the eighth resistor R8, so that the third transistor Q3 breaks a path between the power supply and the battery 6, stops the power supply from charging the battery 6, and the battery 6 keeps discharging to the load 5 until the battery voltage Vbattery is less than the power supply voltage Vin _ DET, and the third transistor Q3 is turned on again to continue charging the battery 6.
As shown in fig. 2, the battery charging/discharging module 4 further includes a second diode D2, a seventh resistor R7, a ninth resistor R9, a tenth resistor R10, a fourth capacitor C4, and a fourth interface J4.
The anode of the second diode D2 is electrically connected to the emitter of the third triode Q3, the cathode of the second diode D2 is electrically connected to the battery power supply control module 3, one end of the seventh resistor R7 and one end of the ninth resistor R9 are both electrically connected to the first input pin of the ninth operational amplifier U9, the second input pin of the tenth operational amplifier U10 is electrically connected to the other end of the ninth resistor R9, the second pin of the fourth interface J4, one end of the tenth resistor R10 and one end of the fourth capacitor C4, the output end of the tenth operational amplifier U10 is electrically connected to the other end of the tenth resistor R10 and the other end of the fourth capacitor C4, and the other end of the seventh resistor R7 and the first pin of the fourth interface J4 are both grounded.
In the embodiment of the present application, the second diode D2 prevents the battery voltage from flowing backward to the power supply terminal, the seventh resistor R7 and the ninth resistor R9 form a voltage dividing circuit, the magnitude of the power supply voltage is adjusted, the tenth resistor R10 and the fourth capacitor C4 cooperate with the tenth operational amplifier U10 to work, and the fourth interface J4 is electrically connected to the battery 6.
Illustratively, the present embodiment discloses an electronic device, which includes a power on/off management circuit 100.
In the embodiment of the present application, the power on/off management circuit 100 is disposed inside the electronic device, and when the load 5 operates normally, the load 5 is powered by the power supply and the battery 6. When the load 5 is abnormally powered off (for example, the power supply is suddenly powered off), the power supply control module cuts off a path between the power supply and the load 5 according to the power-off signal, at the moment, only the residual battery 6 supplies power to the load 5, and the shutdown module generates a shutdown signal according to the power-off signal to normally shut down the load 5 and stop working. When the load 5 stops operating, the battery power supply control module opens the path between the battery 6 and the load 5, so that the battery 6 does not supply power to the load 5 any more. Meanwhile, when the input power is recovered, the power supply control module realizes self-starting according to the input voltage and outputs electric energy for the load 5. Therefore, when the load 5 is in an unconventional power failure, the system can be normally shut down and the system files can be stored, system breakdown is prevented, and the use experience of a user is greatly improved.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed uninterruptible power supply parallel redundancy system and method may be implemented in other ways. For example, the above-described embodiments of the ups parallel redundancy system are merely illustrative, and for example, a division of modules or units is merely a logical division, and other divisions may be implemented in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A startup and shutdown management circuit is characterized by comprising a power supply control module, a shutdown module and a battery supply control module;
the power supply control module is electrically connected with the shutdown module and the battery power supply control module respectively;
the power supply control module is configured to respectively conduct a path between a power supply and a load and a path between a battery and the load according to a power-on signal, and disconnect the path between the power supply and the load according to a power-off signal;
the shutdown module is configured to obtain a shutdown signal according to the power-down signal and send the shutdown signal to the load;
the battery power supply control module is configured to maintain a path between the battery and the load when the load operates, and to disconnect the path between the battery and the load when the load stops operating.
2. The power on/off management circuit according to claim 1, further comprising a battery charge/discharge module;
the battery charging and discharging module is electrically connected with the battery power supply control module;
the battery charging and discharging module is configured to conduct a path between the battery and the power supply when the battery voltage is smaller than the power supply voltage; and when the battery voltage is greater than or equal to the power supply voltage, disconnecting the path between the battery and the power supply.
3. The power on/off management circuit according to claim 1 or 2, wherein the power supply control module comprises a first flip-flop, a first MOS transistor, a second flip-flop, a third and gate, and a fourth or gate;
the second pin of the first trigger is electrically connected with the power supply, the third pin of the first trigger is electrically connected with the grid electrode of the first MOS tube and the third pin of the second trigger respectively, the second pin of the second trigger is electrically connected with the output end of the third AND gate, two input ends of the third AND gate are electrically connected with one input end of the fourth OR gate, the other input end of the fourth OR gate is electrically connected with the power supply, and the output end of the fourth OR gate is electrically connected with the shutdown module and the battery power supply control module respectively.
4. The power on/off management circuit according to claim 3, wherein the power supply control module further comprises a first interface, a second resistor, a fourth resistor, a fifth resistor, a first diode, a third diode, a fourth diode, a first capacitor, and a fifth capacitor;
the first interface is electrically connected with the power supply, a second pin of the first interface is electrically connected with one end of a second resistor, the other end of the second resistor is electrically connected with one end of a fourth resistor and one end of a fifth resistor respectively, the other end of the fourth resistor and one end of a first capacitor are electrically connected with a second pin of a first trigger, a third pin of the first trigger is electrically connected with a positive electrode of a third diode, a negative electrode of the third diode is electrically connected with a grid electrode of a first MOS (metal oxide semiconductor) tube, a positive electrode of the fourth diode and one end of the fifth capacitor respectively, a negative electrode of the fourth diode is electrically connected with a third pin of the second trigger, and the first pin of the first interface, the other end of the fifth resistor, the other end of the first capacitor and the other end of the fifth capacitor are all grounded.
5. The power on/off management circuit according to claim 1 or 2, wherein the battery power control module comprises a fifth operational amplifier, a second transistor and a first resistor;
the third pin of the fifth operational amplifier is electrically connected with the power supply control module, the emitter of the second triode and one end of the first resistor respectively, the base of the second triode is electrically connected with the power supply control module, the second pin of the fifth operational amplifier is electrically connected with the load and the other end of the first resistor respectively, and the first pin of the fifth operational amplifier is electrically connected with the power supply control module.
6. The switch power management circuit of claim 5, wherein the battery power control module further comprises a sixth resistor, a second capacitor, a third capacitor, a second interface, and a third interface;
the first pin of the second interface is electrically connected with the other end of the first resistor, the second pin of the fifth operational amplifier, one end of the sixth resistor and one end of the second capacitor, the first pin of the fifth operational amplifier is electrically connected with the power supply control module, the other end of the sixth resistor, the other end of the second capacitor and the other end of the third capacitor, the other end of the third capacitor and the second pin of the second interface are grounded, the input end of the third interface is electrically connected with the shutdown module, and the output end of the third interface is electrically connected with the load.
7. The power on/off management circuit according to claim 1 or 2, wherein the power off module comprises a sixth and gate and an eighth or gate;
the two input ends of the sixth AND gate are electrically connected with the power supply, the output end of the sixth AND gate is electrically connected with the battery power supply control module, the two input ends of the eighth OR gate are electrically connected with the power supply, the output end of the eighth OR gate is electrically connected with the battery power supply control module, and the enabling end of the sixth AND gate and the enabling end of the eighth OR gate are electrically connected with the power supply control module.
8. The power on/off management circuit according to claim 2, wherein the battery charging/discharging module comprises a third transistor, a seventh or gate, a ninth operational amplifier, a tenth operational amplifier and an eighth resistor;
the collector of the third triode is electrically connected with the power supply control module, the emitter of the third triode is electrically connected with the battery power supply control module, the base of the third triode is electrically connected with the output end of the seventh or gate, the first input pin of the seventh or gate is electrically connected with the output end of the ninth operational amplifier, the second input pin of the seventh or gate is electrically connected with the output end of the tenth operational amplifier, the first input pin of the tenth operational amplifier is electrically connected with one end of the eighth resistor and the battery power supply control module, the second input pin of the tenth operational amplifier is electrically connected with the other end of the eighth resistor and the first input pin of the ninth operational amplifier, and the second input pin of the ninth operational amplifier is electrically connected with the power supply.
9. The power on/off management circuit according to claim 8, wherein the battery charge-discharge module further comprises a second diode, a seventh resistor, a ninth resistor, a tenth resistor, a fourth capacitor, and a fourth interface;
the positive electrode of the second diode is electrically connected with the emitting electrode of the third triode, the negative electrode of the second diode is electrically connected with the battery power supply control module, one end of the seventh resistor and one end of the ninth resistor are electrically connected with the first input pin of the ninth operational amplifier, the second input pin of the tenth operational amplifier is electrically connected with the other end of the ninth resistor, the second pin of the fourth interface, one end of the tenth resistor and one end of the fourth capacitor, the output end of the tenth operational amplifier is electrically connected with the other end of the tenth resistor and the other end of the fourth capacitor, and the other end of the seventh resistor and the first pin of the fourth interface are grounded.
10. An electronic device comprising the power on/off management circuit of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443706.6A CN115940329A (en) | 2022-11-18 | 2022-11-18 | Startup and shutdown management circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443706.6A CN115940329A (en) | 2022-11-18 | 2022-11-18 | Startup and shutdown management circuit and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN115940329A true CN115940329A (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211443706.6A Pending CN115940329A (en) | 2022-11-18 | 2022-11-18 | Startup and shutdown management circuit and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117498528A (en) * | 2023-10-30 | 2024-02-02 | 深圳市安保医疗科技股份有限公司 | Power-down data holding circuit |
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2022
- 2022-11-18 CN CN202211443706.6A patent/CN115940329A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117498528A (en) * | 2023-10-30 | 2024-02-02 | 深圳市安保医疗科技股份有限公司 | Power-down data holding circuit |
| CN117498528B (en) * | 2023-10-30 | 2024-07-19 | 深圳市安保医疗科技股份有限公司 | Power-down data holding circuit |
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