CN105846541A - Power-down protection circuit - Google Patents
Power-down protection circuit Download PDFInfo
- Publication number
- CN105846541A CN105846541A CN201610345480.4A CN201610345480A CN105846541A CN 105846541 A CN105846541 A CN 105846541A CN 201610345480 A CN201610345480 A CN 201610345480A CN 105846541 A CN105846541 A CN 105846541A
- Authority
- CN
- China
- Prior art keywords
- power
- input
- protection circuit
- super capacitor
- energy storage
- 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
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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- 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
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Provided in the invention is a power-down protection circuit. The circuit comprises an input terminal, an output terminal, and an energy storage power supply unit. The input terminal is connected with an input power supply and divides the input of the input power supply into a first-path input and a second-path input; the output terminal connected with the first-path input is used for outputting a voltage for an external device; and the energy storage power supply unit is used for carrying out energy storage on the input, passing through the second-path input, of the input power supply and providing power for an external device by the output terminal when the external devices is in a power-down mode. The energy storage power supply unit consists of a super capacitor, a constant-current source for controlling energy storage of the super capacitor, and a boost control circuit for controlling power supply of the super capacitor. In addition, the power-down protection circuit also includes a power-down detection warning unit. According to the invention, on the basis of the energy storage principle of the super capacitor, when the power of the external device like a laser fails, power can be provided for the external device continuously and a warning signal is provided for the external device, so that the external device can be shut down timely and normally and thus damages of the external device due to an accidental and sudden power failure can be prevented.
Description
Technical field
The present invention relates to electronic circuit technology field, be specially a kind of power-down protection circuit.
Background technology
Laser instrument is as a kind of sophisticated product, and it must operate under a kind of stable state.If it occur that power down suddenly, internal
Precision optics is susceptible to irreversible damage, so needing power down protection design.Current power down protection mainly depends on
By uninterrupted power source (UPS).The major defect of commercially available UPS is that volume is the hugest, integrated level owing to using lead-acid battery
Bad；Power down is not had to indicate, it is impossible to allow laser instrument actively shut down.Additionally, lead-acid battery charging is relatively slow, maximum discharge current is also
Limit, and do not met the reality of laser application.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of power-down protection circuit, is used for solving now
There is the problem that in technology, laser instrument is easily subject to damage when laser instrument power down.
For achieving the above object and other relevant purposes, the present invention provides a kind of power-down protection circuit, described power-down protection circuit bag
Include: for being connected with input power and the input of described input power being divided into first via input and the input of the second tunnel input；
It is connected for the outfan to external devices output voltage with the input of the described first via；One end is connected, separately with described second tunnel input
One end is connected with described outfan, for described input power is carried out energy storage and outside described through the input of described second tunnel input
The energy storage for power supply unit of electric energy is provided through described outfan for described external devices during portion's device power down.
In one embodiment of the invention, described energy storage for power supply unit includes super capacitor.
In one embodiment of the invention, described energy storage for power supply unit also includes being connected to described input power and described super capacitor
Between control the constant-current source of described super capacitor energy-storage.
In one embodiment of the invention, described constant-current source includes the voltage source for exporting constant current, and detection charging current is also
To the amplifier of described voltage source feedback voltage and control the switch that described constant-current source charges to described super capacitor.
In one embodiment of the invention, described switch is metal-oxide-semiconductor or audion.
In one embodiment of the invention, described energy storage for power supply unit also include being connected to described outfan and described super capacitor it
Between for the output voltage of described super capacitor is boosted and controls the boost control circuit that described super capacitor is powered.
In one embodiment of the invention, described boost control circuit includes: boost the output voltage of described super capacitor
Boosting electronic circuit and the hysteresis electronic circuit of the electronic circuit that boosts according to the Control of Voltage of described super capacitor.
In one embodiment of the invention, described power-down protection circuit also includes: respectively with the input of the described first via and described energy storage
Power supply unit is connected for detecting the whether power down of described external devices and generating a warning signal when power down being detected simultaneously by described
Warning signal inputs to the detection of power loss Alarm Unit of described external devices.
In one embodiment of the invention, described external devices is laser instrument.
As it has been described above, a kind of power-down protection circuit of the present invention, have the advantages that
1, the present invention utilizes the energy storage principle of super capacitor when external devices (such as laser instrument) power down, continues as external devices
Power supply, and fall electric circuit inspection power down by detection, provide warning signal to external devices so that external devices can work on
Timely normal shutdown after a period of time, is damaged during to prevent external devices due to unexpected power down suddenly.
2, adult of the present invention is low, and volume is little, and the energy storage charging interval is short, supports High-current output.
3, present configuration is simple, controls flexibly, economical and practical, has wide applicability.
Accompanying drawing explanation
Fig. 1 is shown as the theory diagram of a kind of power-down protection circuit of the present invention.
Fig. 2 is shown as a kind of preferably theory diagram of a kind of power-down protection circuit of the present invention.
Fig. 3 is shown as the structural representation of a kind of power-down protection circuit of the present invention.
Fig. 4 is shown as a kind of structural representation of constant-current source in a kind of power-down protection circuit of the present invention.
Fig. 5 is shown as a kind of structural representation of hysteresis electronic circuit in a kind of power-down protection circuit of the present invention.
Element numbers explanation
1 power-down protection circuit
11 inputs
12 outfans
13 energy storage for power supply unit
131 constant-current sources
132 boost control circuits
14 detection of power loss Alarm Units
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be by disclosed by this specification
Content understand other advantages and effect of the present invention easily.The present invention can also be added by the most different detailed description of the invention
To implement or application, the every details in this specification can also be based on different viewpoints and application, in the essence without departing from the present invention
Various modification or change is carried out under god.
The purpose of the present embodiment is to provide a kind of power-down protection circuit, is used for solving in prior art the laser when laser instrument power down
The problem that device is easily subject to damage.The principle of a kind of power-down protection circuit of the present embodiment described in detail below and embodiment,
Make those skilled in the art need not creative work and be i.e. appreciated that a kind of power-down protection circuit of the present embodiment.
The present embodiment provides a kind of power-down protection circuit, specifically, as it is shown in figure 1, described power-down protection circuit 1 includes: use
In being connected with input power and the input of described input power being divided into first via input and the input 11 of the second tunnel input, with institute
Stating first via input to be connected for the outfan 12 of external devices output voltage, one end is connected with described second tunnel input, another
End is connected with described outfan 12, for described input power is carried out energy storage and described through the input of described second tunnel input
The energy storage for power supply unit 13 of electric energy is provided through described outfan 12 for described external devices during external devices power down.As in figure 2 it is shown,
Described power-down protection circuit 1 also includes: be connected for detecting with the input of the described first via and described energy storage for power supply unit 13 respectively
State external devices whether power down and generate a warning signal when power down being detected and described warning signal is inputed to described outside simultaneously
The detection of power loss Alarm Unit 14 of device.
Hereinafter the power-down protection circuit 1 in the present embodiment is described in detail.
As it is shown on figure 3, be shown as the concrete structure schematic diagram of a kind of power-down protection circuit 1 in the present embodiment.In the present embodiment,
Described external devices is the device that the power down suddenly such as laser instrument are easily damaged.Input power is divided into two-way through input 11, and a road is straight
Connecing and be connected with outfan 12, power for external devices, a road is that energy storage for power supply unit 13 charges.Wherein, the first via input and
Zener diode D1 can be set on the circuit between outfan, the circuit between the second road input and output side can arrange voltage stabilizing two
Pole pipe D2.
In the present embodiment, as it is shown on figure 3, described energy storage for power supply unit 13 includes super capacitor C1, it is connected to described input
Control the constant-current source 131 of described super capacitor C1 energy storage between power supply and described super capacitor C1 and be connected to described outfan
For the output voltage of described super capacitor C1 is boosted and controls described super capacitor between 12 and described super capacitor C1
The boost control circuit 132 that C1 powers.
Wherein, in the present embodiment, use super capacitor C1 that described input power is stored up through the input of described second tunnel input
And electric energy can be provided through described outfan 12 for described external devices when described external devices power down.Super capacitor C1 is a kind of
The power supply of the energy that has specific characteristics between traditional capacitance and battery, its major advantage is that power density is high, and the discharge and recharge time is short,
Electric current is big, operating temperature range width, utilize super capacitor C1 as energy storage and power supply component, relative to traditional UPS scheme,
With the obvious advantage.
Use voltage source can reduce cost as constant-current source 131, use voltage source chip and Current Feedback Control Circuit.Specifically
Ground, as shown in Figure 4, described constant-current source 131 includes the voltage source for exporting constant current, detects charging current and to described
The amplifier A1 of voltage source feedback voltage and control the switch that described constant-current source 131 charges to described super capacitor C1.
Wherein, described amplifier A1 is preferably instrument amplifier.Described switch is metal-oxide-semiconductor or audion Q1.Resistance R1 is
Sampling resistor, charging current is by, after resistance R1, becoming voltage signal, after instrument amplifier A1 amplifies, controls voltage
Source, it is achieved constant-current charge.Resistance R2 and resistance R3 is divider resistance, after super capacitor C1 voltage arrives setting voltage,
Audion Q1 turns on, and makes voltage source enter pressure constant state, super capacitor C1 is carried out constant-voltage charge.
Instrument amplifier is used for detecting charging current, to voltage source chip input feedback voltage Vfb, dynamic regulation of voltage source chip
Output voltage Vout, audion Q1 be used for controlling constant-voltage charge.Threshold value, three poles are set when the voltage of super capacitor C1 arrives
Pipe Q1 turns on, and super capacitor C1 voltage will immobilize.
In the present embodiment, described boost control circuit 132 includes: boost the output voltage of described super capacitor C1
Boosting electronic circuit and the hysteresis electronic circuit of the electronic circuit that boosts according to the Control of Voltage of described super capacitor C1.Described hysteresis
Electronic circuit works under described super capacitor C1 is in the voltage threshold that described hysteresis electronic circuit sets.
The structure of the boosting electronic circuit boosting output voltage as it is known to those skilled in the art that not repeat them here.
Specifically, in the present embodiment, as it is shown in figure 5, hysteresis electronic circuit is by an open-drain output comparator CP1 and resistance R1,
Resistance R2 and resistance R3 composition.When the positive terminal voltage of open-drain output comparator CP1 is more than negative terminal voltage, export high resistant,
When the positive terminal voltage of open-drain output comparator CP1 is less than negative terminal voltage, output earth short circuit.Vref1 and Vref2 is 2 ginsengs
Examine voltage.When the voltage of super capacitor C1 is relatively low, the anode electricity of open-drain output comparator CP1 is less than reference voltage Vref 1,
Open-drain output comparator CP1 output earth short circuit, described boosting electronic circuit does not works.
Charging through after a while, as Vref1 < Vcap*R1/ (R1+R2), open-drain output comparator CP1 output becomes high resistant
State.Now, output voltage Vrun=(Vref2-Vcap) * (R1+R2)/(R1+R2+R3)+Vcap, boosting electronic circuit is started working.
After power down, input voltage Vcap slowly reduces, until (Vref2-Vcap) * R2/ (R1+R2+R3)+Vcap < after Vref1, boosting
Electronic circuit power cut-off, external devices power-off.By regulating different resistance R1, resistance R2, resistance R3 and reference voltage
Vref1 and reference voltage Vref 2, can make boosting electronic circuit start working and input voltage Vcap during power cut-off is different,
Realize the effect of hysteresis.
The voltage that starts of described boosting electronic circuit is determined by the size of described super capacitor C1 with closing voltage.Further, institute
State boosting electronic circuit more than the voltage threshold that described hysteresis electronic circuit sets time start working.Now super capacitor C1 can be outside
Portion's device output electric energy, the voltage of super capacitor C1 slowly declines, when the voltage of super capacitor C1 is less than described hysteresis electronic circuit
During the voltage threshold set, boosting electronic circuit quits work.Now super capacitor C1 stops exporting electric energy to external devices.In
In the present embodiment, the voltage threshold that described hysteresis electronic circuit sets is as 3V～7V.
In the present embodiment, charging and the power supply process of super capacitor C1 are as follows: being divided into two-way after the input of 24V power supply, a road is for outward
Portion's device is powered, and another road is for charging to super capacitor C1.Super capacitor C1 charging is consistent with general battery, can first constant current
Charge constant-voltage charge again, but its charging current can be relatively big, and the charging interval is short.
When super capacitor C1 voltage is more than 7V, boosting electronic circuit quits work beginning work, and super capacitor C1 can be to outside device
Part output electric energy, when super capacitor C1 voltage is less than 3V, boosting electronic circuit quits work, and is used for ensureing super capacitor C1
Will not damage due to over-discharge.
As can be seen here, the power-down protection circuit 1 of the present embodiment utilizes the energy storage principle of super capacitor C1 in external devices (such as
Laser instrument) power down time, continue as external devices and power so that external devices can work on a period of time.
In the present embodiment, described detection of power loss Alarm Unit 14 inputs and described energy storage for power supply unit with the described first via respectively
13 are connected, and are used for detecting the whether power down of described external devices and generate a warning signal when power down being detected simultaneously by described alarm
Signal inputs to described external devices.
Such as, described detection of power loss Alarm Unit 14 utilizes optocoupler to carry out electrical isolation with laser instrument, when external power source power down,
Described detection of power loss Alarm Unit 14 provides a warning signal, laser instrument can be cut out in time so that laser instrument can continue work
Make a period of time to normal shutdown, be damaged during to prevent laser instrument due to unexpected power down suddenly
In sum, the present invention utilizes the energy storage principle of super capacitor when external devices (such as laser instrument) power down, continues as
External devices is powered so that external devices a period of time that can work on to normal shutdown, to prevent external devices due to accident
It is damaged during power down suddenly；Adult of the present invention is low, and volume is little, and the energy storage charging interval is short, supports High-current output；The present invention
Simple in construction, controls flexibly, economical and practical, has wide applicability.So, the present invention effectively overcomes in prior art
Various shortcoming and have high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any it is familiar with this skill
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage of art.Therefore, such as
All that in art, tool usually intellectual is completed under without departing from disclosed spirit and technological thought etc.
Effect is modified or changes, and must be contained by the claim of the present invention.
Claims (9)
1. a power-down protection circuit, it is characterised in that: described power-down protection circuit includes:
For being connected with input power and the input of described input power being divided into first via input and the input of the second tunnel input
End；
It is connected for the outfan to external devices output voltage with the input of the described first via；
One end is connected with described second tunnel input, and the other end is connected with described outfan, is used for described input power through described
The input of the second tunnel input carries out energy storage and provides for described external devices through described outfan when described external devices power down
The energy storage for power supply unit of electric energy.
Power-down protection circuit the most according to claim 1, it is characterised in that: described energy storage for power supply unit includes super capacitor.
Power-down protection circuit the most according to claim 2, it is characterised in that: described energy storage for power supply unit also includes being connected to institute
State the constant-current source controlling described super capacitor energy-storage between input power and described super capacitor.
Power-down protection circuit the most according to claim 3, it is characterised in that: described constant-current source includes for exporting constant current
Voltage source, detection charging current to the amplifier of described voltage source feedback voltage and control described constant-current source to described super
The switch of level electric capacity charging.
Power-down protection circuit the most according to claim 4, it is characterised in that: described switch is metal-oxide-semiconductor or audion.
6. according to the power-down protection circuit described in Claims 2 or 3, it is characterised in that: described energy storage for power supply unit also includes being connected to
For the output voltage of described super capacitor being boosted and controlling described super between described outfan and described super capacitor
The boost control circuit of level capacitances to supply power.
Power-down protection circuit the most according to claim 6, it is characterised in that: described boost control circuit includes: to described super
Boosting electronic circuit that the output voltage of electric capacity carries out boosting and according to the electronic circuit that boosts described in the Control of Voltage of described super capacitor
Hysteresis electronic circuit.
Power-down protection circuit the most according to claim 1, it is characterised in that: described power-down protection circuit also includes: respectively with institute
State first via input to be connected with described energy storage for power supply unit for detecting the whether power down of described external devices and power down being detected
Described warning signal is inputed to the detection of power loss Alarm Unit of described external devices by Shi Shengcheng mono-warning signal simultaneously.
Power-down protection circuit the most according to claim 1, it is characterised in that: described external devices is laser instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345480.4A CN105846541A (en) | 2016-05-23 | 2016-05-23 | Power-down protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345480.4A CN105846541A (en) | 2016-05-23 | 2016-05-23 | Power-down protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105846541A true CN105846541A (en) | 2016-08-10 |
Family
ID=56594141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610345480.4A Pending CN105846541A (en) | 2016-05-23 | 2016-05-23 | Power-down protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105846541A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106275855A (en) * | 2016-08-25 | 2017-01-04 | 杨洋 | Medical treatment logistics storage facilities electronic thermostatic control system |
| CN106855695A (en) * | 2016-12-30 | 2017-06-16 | 上海新时达电气股份有限公司 | Robot security's control system and method |
| CN107436671A (en) * | 2017-08-16 | 2017-12-05 | 济南浪潮高新科技投资发展有限公司 | A kind of power down protection structure and method |
| CN109878438A (en) * | 2019-02-22 | 2019-06-14 | 湖南海博瑞德电智控制技术有限公司 | Power-supply system for new-energy automobile |
| CN110086244A (en) * | 2019-04-12 | 2019-08-02 | 杭州涂鸦信息技术有限公司 | A kind of dual power supply management circuit and dual power supply tool |
| CN110224479A (en) * | 2019-05-22 | 2019-09-10 | 珠海格力电器股份有限公司 | A kind of power-down protection apparatus, control system and its power-off protection method |
| CN110620621A (en) * | 2019-09-23 | 2019-12-27 | 武汉光迅科技股份有限公司 | Drive circuit, control method, and storage medium |
| CN111231866A (en) * | 2019-12-31 | 2020-06-05 | 武汉长江通信智联技术有限公司 | Vehicle-mounted power supply circuit and method for realizing power failure protection function based on super capacitor |
| CN113899939A (en) * | 2021-12-10 | 2022-01-07 | 广东省新一代通信与网络创新研究院 | Power failure warning circuit and processing method for communication equipment and communication equipment |
| WO2022016858A1 (en) * | 2020-07-24 | 2022-01-27 | 苏州浪潮智能科技有限公司 | Voltage pumping circuit and method that support power loss data protection |
| CN116742786A (en) * | 2023-08-14 | 2023-09-12 | 四川中久大光科技有限公司 | Laser seed source and main control loop safety power supply circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157979A (en) * | 2011-02-28 | 2011-08-17 | 华为技术有限公司 | Power-down retaining method and circuit |
| CN102801192A (en) * | 2012-08-10 | 2012-11-28 | 江苏大学 | Wireless sensor network node solar charging and storage battery discharging protective circuit |
| CN103036284A (en) * | 2012-12-07 | 2013-04-10 | 陕西千山航空电子有限责任公司 | Aviation onboard recorder independent power supply |
| CN103051044A (en) * | 2012-12-07 | 2013-04-17 | 陕西千山航空电子有限责任公司 | Power source power off maintaining circuit |
| CN103580272A (en) * | 2013-11-15 | 2014-02-12 | 深圳市双赢伟业科技股份有限公司 | Time-delay circuit for outage of power source |
| CN205753618U (en) * | 2016-05-23 | 2016-11-30 | 国神光电科技（上海）有限公司 | A kind of power-down protection circuit |
-
2016
- 2016-05-23 CN CN201610345480.4A patent/CN105846541A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157979A (en) * | 2011-02-28 | 2011-08-17 | 华为技术有限公司 | Power-down retaining method and circuit |
| CN102801192A (en) * | 2012-08-10 | 2012-11-28 | 江苏大学 | Wireless sensor network node solar charging and storage battery discharging protective circuit |
| CN103036284A (en) * | 2012-12-07 | 2013-04-10 | 陕西千山航空电子有限责任公司 | Aviation onboard recorder independent power supply |
| CN103051044A (en) * | 2012-12-07 | 2013-04-17 | 陕西千山航空电子有限责任公司 | Power source power off maintaining circuit |
| CN103580272A (en) * | 2013-11-15 | 2014-02-12 | 深圳市双赢伟业科技股份有限公司 | Time-delay circuit for outage of power source |
| CN205753618U (en) * | 2016-05-23 | 2016-11-30 | 国神光电科技（上海）有限公司 | A kind of power-down protection circuit |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106275855B (en) * | 2016-08-25 | 2019-01-04 | 嘉兴飞翔医用新材料科技股份有限公司 | Medical logistics storage facilities electronic thermostatic control system |
| CN106275855A (en) * | 2016-08-25 | 2017-01-04 | 杨洋 | Medical treatment logistics storage facilities electronic thermostatic control system |
| CN106855695A (en) * | 2016-12-30 | 2017-06-16 | 上海新时达电气股份有限公司 | Robot security's control system and method |
| CN106855695B (en) * | 2016-12-30 | 2020-07-07 | 上海新时达电气股份有限公司 | Robot safety control system and method |
| CN107436671A (en) * | 2017-08-16 | 2017-12-05 | 济南浪潮高新科技投资发展有限公司 | A kind of power down protection structure and method |
| CN109878438B (en) * | 2019-02-22 | 2021-09-14 | 湖南海博瑞德电智控制技术有限公司 | Power supply system for new energy automobile |
| CN109878438A (en) * | 2019-02-22 | 2019-06-14 | 湖南海博瑞德电智控制技术有限公司 | Power-supply system for new-energy automobile |
| CN110086244A (en) * | 2019-04-12 | 2019-08-02 | 杭州涂鸦信息技术有限公司 | A kind of dual power supply management circuit and dual power supply tool |
| CN110224479A (en) * | 2019-05-22 | 2019-09-10 | 珠海格力电器股份有限公司 | A kind of power-down protection apparatus, control system and its power-off protection method |
| CN110620621A (en) * | 2019-09-23 | 2019-12-27 | 武汉光迅科技股份有限公司 | Drive circuit, control method, and storage medium |
| CN111231866A (en) * | 2019-12-31 | 2020-06-05 | 武汉长江通信智联技术有限公司 | Vehicle-mounted power supply circuit and method for realizing power failure protection function based on super capacitor |
| WO2022016858A1 (en) * | 2020-07-24 | 2022-01-27 | 苏州浪潮智能科技有限公司 | Voltage pumping circuit and method that support power loss data protection |
| CN113899939A (en) * | 2021-12-10 | 2022-01-07 | 广东省新一代通信与网络创新研究院 | Power failure warning circuit and processing method for communication equipment and communication equipment |
| CN113899939B (en) * | 2021-12-10 | 2022-03-29 | 广东省新一代通信与网络创新研究院 | Power failure warning circuit and processing method for communication equipment and communication equipment |
| CN116742786A (en) * | 2023-08-14 | 2023-09-12 | 四川中久大光科技有限公司 | Laser seed source and main control loop safety power supply circuit |
| CN116742786B (en) * | 2023-08-14 | 2023-10-20 | 四川中久大光科技有限公司 | Laser seed source and main control loop safety power supply circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105846541A (en) | Power-down protection circuit | |
| US8896272B2 (en) | Systems and methods of battery charging with dynamic float voltage | |
| US20140360512A1 (en) | Charging method of electronic cigarettes and electronic cigarette box | |
| EP3007306A1 (en) | Electronic cigarette charging method and electronic cigarette case | |
| CN202712892U (en) | Battery management system and load detection circuit thereof | |
| US10090689B2 (en) | Overcurrent protection circuit and method for limiting discharge current of battery within safety limiting value | |
| TW200638652A (en) | Power management circuit and methodology for battery-powered systems | |
| CN104638717B (en) | A kind of portable power source double temperature double control integrated circuit | |
| CN205753618U (en) | A kind of power-down protection circuit | |
| CN104023920A (en) | Ultra-capacitor based energy storage for appliances | |
| EP3804081A1 (en) | Battery charger | |
| CN103779906A (en) | Charge management device and system | |
| CN103956721A (en) | Battery explosion-proof circuit and battery charging circuit | |
| CN108574323A (en) | A kind of battery charge control circuit | |
| TWI519025B (en) | Self-discharging circuit | |
| CN203826946U (en) | Cell explosionproof circuit and cell charging circuit | |
| CN203720253U (en) | Power-down detection circuit | |
| JP7392938B2 (en) | Breaking circuit | |
| CN209748236U (en) | Discrete power supply charging circuit | |
| RU2692697C1 (en) | Accumulator self-discharge compensation device | |
| RU2555323C2 (en) | Device to compensate self-discharge of accumulator batteries | |
| CN109001650B (en) | Power failure detection delay circuit for engine control system | |
| WO2016203234A1 (en) | Voltage regulators | |
| CN205846847U (en) | A kind of power-down protection circuit | |
| CN104113131A (en) | Power-off detection protection system used for aircraft data recording equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |
|
| RJ01 | Rejection of invention patent application after publication |