CN116961180A - RTC clock power supply circuit based on system power supply battery - Google Patents

RTC clock power supply circuit based on system power supply battery Download PDF

Info

Publication number
CN116961180A
CN116961180A CN202310907260.6A CN202310907260A CN116961180A CN 116961180 A CN116961180 A CN 116961180A CN 202310907260 A CN202310907260 A CN 202310907260A CN 116961180 A CN116961180 A CN 116961180A
Authority
CN
China
Prior art keywords
power supply
battery
system power
rtc
control module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310907260.6A
Other languages
Chinese (zh)
Inventor
朱从孟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lenovo Changfeng Technology Beijing Co Ltd
Original Assignee
Lenovo Changfeng Technology Beijing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lenovo Changfeng Technology Beijing Co Ltd filed Critical Lenovo Changfeng Technology Beijing Co Ltd
Priority to CN202310907260.6A priority Critical patent/CN116961180A/en
Publication of CN116961180A publication Critical patent/CN116961180A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The application provides an RTC clock power supply circuit based on a system power supply battery, which relates to the technical field of electronic circuits, and is characterized in that the RTC battery is connected with the positive electrode of a first diode, the negative electrode of the first diode is connected with a first resistor, and the first resistor is connected to an RTC clock; connecting a system power supply battery with the positive electrode of a second diode, connecting the negative electrode of the second diode with a second resistor, and connecting the second resistor to the RTC clock; connecting a system power supply battery with a switch module, and connecting the switch module with a system power supply circuit; the control module is communicatively coupled to the switch module. The technical effect of avoiding the expenditure of the leakage current of the first equipment to the power supply battery of the system and greatly increasing the effective holding time of the RTC clock is achieved.

Description

RTC clock power supply circuit based on system power supply battery
Technical Field
The application relates to the technical field of electronic circuits, in particular to an RTC clock power supply circuit based on a system power supply battery.
Background
For the equipment with time recording requirements, an independent RTC clock circuit can be arranged, the RTC clock circuit provides electric energy required by operation by an independent RTC battery, the larger the RTC battery is, the longer the RTC clock is effectively kept in a shutdown state of the corresponding equipment, but the effective time of the RTC clock is limited by the capacity of the RTC battery, and along with the development of lightweight design of electronic equipment, the capacity of the RTC battery is also designed to be smaller and smaller, so that the effective keeping time of the RTC clock is shortened.
Meanwhile, the self leakage current of the equipment can reach the milliamp level under the shutdown condition of the equipment at the present stage, and the leakage current of the equipment also generates loss to a certain extent for a system power supply battery for carrying out equipment operation power supply.
In summary, the capacity of the RTC battery is smaller at the present stage, so that the effective time of the RTC battery for maintaining the RTC clock running is shorter, and the device has the defect that the battery is lost due to leakage current in the shutdown state.
Disclosure of Invention
The application provides a system power supply battery-based RTC clock power supply method, which is used for solving the technical problems that in the prior art, the RTC battery has small capacity, so that the effective time for maintaining the RTC clock to run by the RTC battery is short, and the battery is lost due to leakage current when equipment is in a shutdown state, so that the technical effects of avoiding the expenditure of the leakage current of a first equipment on the system power supply battery and greatly increasing the effective holding time of the RTC clock are achieved.
In view of the above, the present application provides a RTC clock power supply method based on a system power supply battery.
In a first aspect, the present application provides an RTC clock power supply circuit based on a system power supply battery, wherein the power supply circuit includes: the system comprises an RTC clock, an RTC battery, a first diode, a second diode, a first resistor, a second resistor, a switch module, a control module and a system power supply battery; the RTC battery is connected with the positive electrode of the first diode, and the negative electrode of the first diode is connected with the first resistor; the first resistor is connected to the RTC clock; the system power supply battery is connected with the positive electrode of the second diode, and the negative electrode of the second diode is connected with the second resistor; the second resistor is connected to the RTC clock; the system power supply battery is connected with the switch module, and the switch module is connected with the system power supply circuit; the control module is in communication connection with the switch module.
In a second aspect of the present application, there is provided a RTC clock power supply method based on a system power supply battery, the method comprising: when first equipment is electrified, the first equipment sends a system electrifying signal to a control module; the control module generates and sends a conduction enabling signal to the switch module based on the system power-on signal; the switch module receives the conduction enabling signal, and the switch module is adjusted to be in a conduction state; when first equipment is powered down, the first equipment sends a system power-off signal to a control module; the control module generates and transmits a disconnection enabling signal to the switch module based on the system power-off signal; the switch module receives the disconnection enabling signal, and the switch module is adjusted to be in a disconnection state.
In a third aspect of the present application, there is provided an RTC clock power supply system based on a system power supply battery, the system comprising: the power-on signal sending module is used for sending a system power-on signal to the control module by the first equipment when the first equipment is electrified; the conduction signal sending module is used for generating and sending a conduction enabling signal to the switch module based on the system power-on signal by the control module; the switch conduction control module is used for receiving the conduction enabling signal by the switch module and adjusting the switch module to a conduction state; the power-off signal sending module is used for sending a system power-off signal to the control module by the first equipment when the first equipment is powered down; the power-off signal sending module is used for generating and sending a disconnection enabling signal to the switch module based on the system power-off signal by the control module; and the switch disconnection control module is used for receiving the disconnection enabling signal by the switch module and adjusting the switch module to a disconnection state.
One or more technical schemes provided by the application have at least the following technical effects or advantages:
according to the embodiment, the control module and the switch module are additionally arranged between the system power supply battery and the power supply circuit of the first device, so that the power supply of the system power supply battery to the first device is thoroughly disconnected in the power-off state of the first device, and the technical effect of avoiding the expenditure of the leakage current of the first device to the system power supply battery is achieved. Meanwhile, the RTC clock is connected with the system power supply battery and the RTC battery, and the RTC clock running power supply selection is performed based on the voltages of the RTC battery and the system power supply battery, so that the technical effect of greatly increasing the effective holding time of the RTC clock is achieved.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
FIG. 1 is a schematic diagram of an RTC clock power supply circuit based on a system power supply battery provided by the application;
FIG. 2 is a schematic flow chart of a RTC clock power supply method based on a system power supply battery provided by the application;
fig. 3 is a schematic diagram of an RTC clock power supply system based on a system power supply battery according to the present application.
Reference numerals illustrate: the power-on signal transmission module 1, the power-on signal transmission module 2, the switch power-on control module 3, the power-off signal transmission module 4, the power-off signal transmission module 5 and the switch power-off control module 6.
Detailed Description
The application provides an RTC clock power supply circuit based on a system power supply battery, which is used for solving the technical problems that in the prior art, the RTC battery has smaller capacity, the effective time for maintaining the RTC clock to run by the RTC battery is shorter, and leakage current exists in equipment in a shutdown state, so that the battery is lost.
The technical scheme of the application accords with related regulations on data acquisition, storage, use, processing and the like.
In the following, the technical solutions of the present application will be clearly and completely described with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments of the present application, and that the present application is not limited by the exemplary embodiments described herein. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present application are shown.
Example 1
As shown in fig. 1, the present application provides an RTC clock power supply circuit based on a system power supply battery, the power supply circuit comprising: the system comprises an RTC clock, an RTC battery, a first diode, a second diode, a first resistor, a second resistor, a switch module, a control module and a system power supply battery;
the RTC battery is connected with the positive electrode of the first diode, and the negative electrode of the first diode is connected with the first resistor;
the first resistor is connected to the RTC clock;
in particular, the RTC clock is a clock for tracking time, and the RTC clock can continue to run in the case of power failure or power failure and can keep accurate time counts, and is commonly used in electronic devices and systems with time recording requirements to provide accurate date and time information, so that the device can continue to use the correct time after being powered up again based on the RTC clock. The electronic device and the system with the time recording requirement are collectively called as a first device, wherein the first device comprises, but is not limited to, a computer, an embedded system and an alarm clock.
The RTC battery is a small battery that provides power to the RTC clock, and is capable of continuously providing power to the RTC clock to maintain operation of the RTC clock when the main power that maintains operation of the first device is turned off or powered off. Based on the RTC battery implementation, the RTC clock can maintain accuracy of the time count even if the first device is not powered on.
In this embodiment, the RTC clock is used in combination with the RTC battery, and the first diode and the first resistor are connected in series between the RTC clock and the RTC battery. Specifically, the RTC battery is connected with the positive electrode of the first diode, and the negative electrode of the first diode is connected with the first resistor; the first resistor is connected to the RTC clock.
The system power supply battery is connected with the positive electrode of the second diode, and the negative electrode of the second diode is connected with the second resistor;
the second resistor is connected to the RTC clock;
further, the system power supply battery is used for supplying power to a first device, and the first device is a device with time recording requirements.
Further, when the first device is powered on, the system power supply battery supplies power to the first device, and the voltage of the system power supply battery after the system power supply battery passes through the second diode and the second resistor is greater than the voltage of the RTC battery after the RTC battery passes through the first diode and the first resistor, and the power supply of the RTC clock is performed based on the system power supply battery.
Further, when the first device is powered down, the system power supply battery does not supply power to the first device, and the voltage of the system power supply battery after the system power supply battery passes through the second diode and the second resistor is smaller than the voltage of the RTC battery after the RTC battery passes through the first diode and the first resistor, and the power supply of the RTC clock is performed based on the RTC battery.
In particular, the first device is an unspecified device with time recording requirements including, but not limited to, a computer, an embedded system, an alarm clock. The system power supply battery is used as a power supply source for operating and supplying power for the first equipment.
In this embodiment, the system power supply battery is connected to the RTC clock, the system power supply battery supplies power to the operation of the RTC clock in a specific scenario, a connection circuit of the system power supply battery and the RTC clock is that the system power supply battery is connected to the anode of the second diode, and the cathode of the second diode is connected to the second resistor; the second resistor is connected to the RTC clock.
And the first device is powered on to connect the first device with the system power supply battery, the first device is in a working state, and the system power supply battery supplies electric energy for the operation of the first device. When the device is powered up, the current of the system power battery begins to flow through the first device, and the circuitry and components in the first device begin to operate.
And otherwise, the first device is powered down to disconnect the first device from the system power supply battery, the first device is in a power-off state, and the system power supply battery does not provide electric energy for the first device to operate. When the device is powered down, the current of the system power supply battery no longer flows through the first device.
In this embodiment, the scenario of using the system power supply battery to supply power to the RTC clock is as follows:
when the first device is electrified, the system power supply battery supplies power to the first device, and the voltage of the system power supply battery after the system power supply battery passes through the second diode and the second resistor is larger than that of the RTC battery after the RTC battery passes through the first diode and the first resistor, and at the moment, the power supply of the RTC clock is performed based on the system power supply battery.
In this embodiment, the scenario of using the RTC battery to supply power to the RTC clock is as follows:
when the first device is powered down, the system power supply battery does not supply power to the first device, and the voltage of the system power supply battery after the system power supply battery passes through the second diode and the second resistor is smaller than the voltage of the RTC battery after the RTC battery passes through the first diode and the first resistor, and at the moment, the RTC clock is powered on based on the RTC battery.
The system power supply battery is connected with the switch module, and the switch module is connected with the system power supply circuit;
the control module is in communication connection with the switch module.
Further, when the first device is powered on, the control module controls the switch module to be adjusted to be in a conducting state.
Further, when the first device is powered down, the control module controls the switch module to be adjusted to be in a conducting state.
Furthermore, the control module is powered by a control module battery, and the control module battery is an independent power supply battery.
Specifically, in this embodiment, the system power supply battery is connected to the first device based on a system power supply circuit, and the system power supply battery supplies electric power required for operation to the first device through the system power supply circuit.
In this embodiment, the switch module is disposed between the system power supply battery and the system power supply circuit, and the switch module controls the on-off of the power supplied by the system power supply battery to the first device by adjusting the switch state. Meanwhile, the control module is in communication connection with the switch module, and the control module sends different control signals to the switch module according to the state of the first equipment so as to control the switch state of the switch module.
Specifically, when the first device is powered on, the first device sends a system power-on signal to the control module; the control module generates and sends a conduction enabling signal to the switch module based on the system power-on signal; the switch module receives the conduction enabling signal and adjusts the switch state to a conduction state; when the first equipment is powered down, the first equipment sends a system power-off signal to a control module; the control module generates and transmits a disconnection enabling signal to the switch module based on the system power-off signal; the switch module receives the disconnection enabling signal and adjusts the switch state to the disconnection state.
In this embodiment, selection of actual circuit elements of the control module is not limited, and the control module may be a micro-controller chip with ultra-low power consumption, or may be a functional module constructed by a detection device and a control device, where the detection device and the control device are separate devices. In order to ensure that the control module can always work normally, the implementation adopts the battery power supply of the control module to independently supply power to the control module.
According to the embodiment, the control module and the switch module are additionally arranged between the system power supply battery and the power supply circuit of the first device, so that the power supply of the system power supply battery to the first device is thoroughly disconnected in the power-off state of the first device, and the technical effect of avoiding the expenditure of the leakage current of the first device to the system power supply battery is achieved.
According to the embodiment, the RTC clock is connected with the system power supply battery and the RTC battery, and the RTC clock running power supply selection is performed based on the voltages of the RTC battery and the system power supply battery, so that the technical effect of greatly increasing the effective holding time of the RTC clock is achieved.
Example two
As shown in fig. 2, the present application provides a RTC clock power supply method based on a system power supply battery, the method comprising:
s100, when first equipment is electrified, the first equipment sends a system electrifying signal to a control module;
s200, the control module generates and sends a conduction enabling signal to the switch module based on the system power-on signal;
s300, the switch module receives the conduction enabling signal, and the switch module is adjusted to be in a conduction state;
s400, when first equipment is powered down, the first equipment sends a system power-off signal to a control module;
s500, the control module generates and sends a disconnection enabling signal to the switch module based on the system power-off signal;
and S600, the switch module receives the disconnection enabling signal, and the switch module is adjusted to be in a disconnection state.
Specifically, in this embodiment, when the first device is powered on, the first device sends a system power-on signal to the control module, where the system power-on signal is a combined signal formed by a power-on key signal of the first device and a system power-on signal of the first device.
The control module receives a signal sent by the first device, generates and sends a conduction enabling signal to the switch module after judging that the signal is the system energizing signal, and the switch module enables the switch circuit through the conduction enabling signal (EN signal) to adjust the switch circuit to be in a conduction state.
In this embodiment, when the first device is powered down, the first device sends a system power-off signal to the control module, where the system power-off signal is a combined signal formed by a power-off key signal of the first device and a system power-off signal of the first device.
The control module receives a signal sent by the first device, generates and sends an off enable signal to the switch module after judging that the signal is the system power-off signal, and the switch module disables the switch circuit through the off enable signal (EN signal) to adjust the switch circuit to be in an off state.
According to the embodiment, the control module and the switch module are additionally arranged between the system power supply battery and the power supply circuit of the first device, so that the power supply of the system power supply battery to the first device is thoroughly disconnected in the power-off state of the first device, and the technical effect of avoiding the expenditure of the leakage current of the first device to the system power supply battery is achieved.
In one embodiment, the method steps provided by the application further comprise:
s710, obtaining a first power supply voltage of a system power supply battery;
s720, obtaining a second power supply voltage of the RTC battery;
s730, judging whether the first power supply voltage is larger than the second power supply voltage;
s740, if the first power supply voltage is larger than the second power supply voltage, performing running power supply of the RTC clock based on the system power supply battery;
and S750, if the first power supply voltage is smaller than the second power supply voltage, performing running power supply of the RTC clock based on the RTC battery.
Specifically, in this embodiment, two running power supplies of the RTC clock are respectively an RTC battery and a system power supply battery. Which battery the RTC clock is powered by depends on the battery voltage. Specifically, the embodiment obtains a first power supply voltage of a power supply battery of the system, obtains a second power supply voltage of the RTC battery, and judges whether the first power supply voltage is greater than the second power supply voltage; if the first power supply voltage is larger than the second power supply voltage, performing running power supply of the RTC clock based on the system power supply battery; and if the first power supply voltage is smaller than the second power supply voltage, performing running power supply of the RTC clock based on the RTC battery.
According to the embodiment, the RTC clock is connected with the system power supply battery and the RTC battery, and the RTC clock running power supply selection is performed based on the voltages of the RTC battery and the system power supply battery, so that the RTC clock is synchronously powered when the system power supply battery performs the first equipment running power supply, the using amount of the RTC battery is reduced, and the technical effect of greatly increasing the effective holding time of the RTC clock is achieved.
Example III
Based on the same inventive concept as the RTC clock power supply method based on the system power supply battery in the foregoing embodiment, as shown in fig. 3, the present application provides an RTC clock power supply system based on the system power supply battery, where the system includes:
the power-on signal sending module 1 is used for sending a system power-on signal to the control module by the first equipment when the first equipment is electrified;
the conduction signal sending module 2 is used for generating and sending a conduction enabling signal to the switch module by the control module based on the system power-on signal;
the switch conduction control module 3 is used for receiving the conduction enabling signal by the switch module, and the switch module is adjusted to be in a conduction state;
the power-off signal sending module 4 is used for sending a system power-off signal to the control module by the first equipment when the first equipment is powered down;
the power-off signal sending module 5 is used for generating and sending a disconnection enabling signal to the switch module by the control module based on the system power-off signal;
and the switch disconnection control module 6 is used for receiving the disconnection enabling signal by the switch module and adjusting the switch module to be in a disconnection state.
In one embodiment, the system further comprises:
a power supply voltage obtaining unit for obtaining a first power supply voltage of a system power supply battery;
a power supply voltage acquisition unit for acquiring a second power supply voltage of the RTC battery;
a power supply voltage judging unit configured to judge whether the first power supply voltage is greater than the second power supply voltage;
the clock power supply determining unit is used for performing running power supply of the RTC clock based on the system power supply battery if the first power supply voltage is larger than the second power supply voltage;
and the clock power supply comparison unit is used for carrying out running power supply of the RTC clock based on the RTC battery if the first power supply voltage is smaller than the second power supply voltage.
The RTC clock power supply method based on the system power supply battery and the specific example in the foregoing embodiment are equally applicable to the RTC clock power supply system based on the system power supply battery in this embodiment, and those skilled in the art can clearly know the RTC clock power supply system based on the system power supply battery in this embodiment through the foregoing detailed description of the RTC clock power supply method based on the system power supply battery, so that the details of this embodiment will not be described herein for brevity. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An RTC clock power supply circuit based on system power supply battery, characterized in that: the system comprises an RTC clock, an RTC battery, a first diode, a second diode, a first resistor, a second resistor, a switch module, a control module and a system power supply battery;
the RTC battery is connected with the positive electrode of the first diode, and the negative electrode of the first diode is connected with the first resistor;
the first resistor is connected to the RTC clock;
the system power supply battery is connected with the positive electrode of the second diode, and the negative electrode of the second diode is connected with the second resistor;
the second resistor is connected to the RTC clock;
the system power supply battery is connected with the switch module, and the switch module is connected with the system power supply circuit;
the control module is in communication connection with the switch module.
2. A RTC clock power supply circuit based on a system power supply battery as in claim 1, wherein the control module is powered by a control module battery, and wherein the control module battery is a stand-alone power supply battery.
3. A RTC clock supply circuit based on a system power supply battery according to claim 1, wherein the system power supply battery is used to power a first device, the first device being a device with a time recording requirement.
4. A RTC clock supply circuit based on a system supply battery as set forth in claim 3, wherein when the first device is powered up, the system supply battery supplies power to the first device, and a system supply battery voltage of the system supply battery after passing through the second diode and the second resistor is greater than a RTC battery voltage of the RTC battery after passing through the first diode and the first resistor, and the RTC clock supply is based on the system supply battery.
5. A system power battery based RTC clock supply circuit according to claim 3, wherein when the first device is powered down, the system power battery does not supply power to the first device, and the system power battery voltage after the system power battery passes through the second diode and the second resistor is smaller than the RTC battery voltage after the RTC battery passes through the first diode and the first resistor, and the RTC clock supply is performed based on the RTC battery.
6. A system power battery based RTC clock supply circuit as in claim 3, wherein the control module controls the switch module to adjust to a conductive state when the first device is powered up.
7. A system power battery based RTC clock power supply circuit as defined in claim 6, wherein the control module controls the switch module to adjust to a conductive state when the first device is powered down.
8. A method for supplying RTC clocks based on a system power supply battery, the method comprising:
when first equipment is electrified, the first equipment sends a system electrifying signal to a control module;
the control module generates and sends a conduction enabling signal to the switch module based on the system power-on signal;
the switch module receives the conduction enabling signal, and the switch module is adjusted to be in a conduction state;
when first equipment is powered down, the first equipment sends a system power-off signal to a control module;
the control module generates and transmits a disconnection enabling signal to the switch module based on the system power-off signal;
the switch module receives the disconnection enabling signal, and the switch module is adjusted to be in a disconnection state.
9. A system power battery based RTC clock power supply method as in claim 8, the method comprising:
obtaining a first power supply voltage of a system power supply battery;
obtaining a second power supply voltage of the RTC battery;
judging whether the first power supply voltage is larger than the second power supply voltage or not;
if the first power supply voltage is larger than the second power supply voltage, performing running power supply of the RTC clock based on the system power supply battery;
and if the first power supply voltage is smaller than the second power supply voltage, performing running power supply of the RTC clock based on the RTC battery.
10. An RTC clock power supply system based on a system power supply battery, the system comprising:
the power-on signal sending module is used for sending a system power-on signal to the control module by the first equipment when the first equipment is electrified;
the conduction signal sending module is used for generating and sending a conduction enabling signal to the switch module based on the system power-on signal by the control module;
the switch conduction control module is used for receiving the conduction enabling signal by the switch module and adjusting the switch module to a conduction state;
the power-off signal sending module is used for sending a system power-off signal to the control module by the first equipment when the first equipment is powered down;
the power-off signal sending module is used for generating and sending a disconnection enabling signal to the switch module based on the system power-off signal by the control module;
and the switch disconnection control module is used for receiving the disconnection enabling signal by the switch module and adjusting the switch module to a disconnection state.
CN202310907260.6A 2023-07-24 2023-07-24 RTC clock power supply circuit based on system power supply battery Pending CN116961180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310907260.6A CN116961180A (en) 2023-07-24 2023-07-24 RTC clock power supply circuit based on system power supply battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310907260.6A CN116961180A (en) 2023-07-24 2023-07-24 RTC clock power supply circuit based on system power supply battery

Publications (1)

Publication Number Publication Date
CN116961180A true CN116961180A (en) 2023-10-27

Family

ID=88443988

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310907260.6A Pending CN116961180A (en) 2023-07-24 2023-07-24 RTC clock power supply circuit based on system power supply battery

Country Status (1)

Country Link
CN (1) CN116961180A (en)

Similar Documents

Publication Publication Date Title
US8032259B2 (en) Bi-directional power control
CN110880945B (en) Electronic equipment, control module and controller
US20050071691A1 (en) Dynamic temperature-adjusted power redundancy
EP3736662A1 (en) Power supply management for a data storage device
RU2010102947A (en) METHOD AND SYSTEM OF MANAGEMENT OF DISCONNECTIONS OF ELECTRIC POWER SUPPLY ON THE BOARD OF THE AIRCRAFT
US11054483B2 (en) Terminal device, method for leakage detection therefor
CN114094665B (en) Power supply circuit and electronic equipment
US20120091812A1 (en) Power switching device
CN215705794U (en) Charging interface awakening circuit
CN116961180A (en) RTC clock power supply circuit based on system power supply battery
CN104199535A (en) Digital power supply device and method
CN209766595U (en) overlength standby device
US8650421B2 (en) Network interface apparatus and related power saving method thereof
CN110928392A (en) Power supply control device and electronic apparatus
CN112600283B (en) Startup and shutdown circuit
KR102640582B1 (en) Smart battery device, and electronic device thereof
CN211349294U (en) Power supply control device and electronic apparatus
CN112034974B (en) Clock chip power supply switching method, device, terminal and medium
CN218603202U (en) Wake-up circuit, battery device and electronic equipment
CN219872324U (en) Power management circuit of chip tester and chip tester
CN216649315U (en) Power supply circuit
CN115096339B (en) Circuit for detecting opening of cover body of electronic equipment and electronic equipment
CN214850617U (en) Super capacitor-based gas meter power-down reporting circuit
CN112738873B (en) Module wake-up protection system and method
CN213522445U (en) Ultra-low static power consumption circuit for mobile lighting equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination