CN107294365A - A kind of power supply circuit and negative sense carrying out surge protection method - Google Patents
A kind of power supply circuit and negative sense carrying out surge protection method Download PDFInfo
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- CN107294365A CN107294365A CN201610194218.4A CN201610194218A CN107294365A CN 107294365 A CN107294365 A CN 107294365A CN 201610194218 A CN201610194218 A CN 201610194218A CN 107294365 A CN107294365 A CN 107294365A
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- energy storage
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- supply circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Whether occurs anomalous variation the invention discloses the sense of current of a kind of power supply circuit and negative sense carrying out surge protection method, including detected object of the detection in current supply circuit；When anomalous variation occurs for the sense of current, control signal is sent；The energy stored in advance is discharged into the current supply circuit according to the control signal.Whether occurs anomalous variation using the sense of current for detecting the detected object that electric circuit inspection is in current supply circuit, when sense of current anomalous variation is detected, by control circuit communication accumulator and current supply circuit, the energy for making accumulator store it in advance is discharged into current supply circuit, to avoid the voltage decline because of caused by negative sense surge in current supply circuit, so as to which in the case where being not provided with counnter attack diode and counnter attack metal-oxide-semiconductor, negative sense carrying out surge protection, normal power supply can be resisted.
Description
Technical field
The present invention relates to electronic device field, more particularly to a kind of power supply circuit and negative sense carrying out surge protection method.
Background technology
With the development of society, the rhythm of life of people tends to be rapid：Rapidly obtain external information, it is fast
The information to acquisition of speed handled, rapidly outwardly transmission information, and these all must as modern
Standby quality.In the case where so relying on electronic communication equipment, user wants to reliability of communication equipment
It is naturally also more and more higher to ask, and short interruptions once occurs in communication network, except that large area can be brought to complain,
Immeasurable economic loss can more be caused.
In mountain area and the more areas of thunderbolt, often occur to cause showing for system reboot because meeting with thunderbolt
As this is due to that thunderbolt causes occur huge negative sense surge in electric power system, and negative sense surge can back suction input
The energy of storage capacitor, causes to input " HVDC-low-voltage direct ", i.e., DC-DC circuit is because under-voltage and defeated
Go out power down, so as to cause whole electric power system power-down rebooting.In order to avoid being caused damage to user, increasingly
The situation of power down can not occur in many communication device calls electric power system under conditions of lightning surge appearance.Cause
This, for lightning surge, the protection of particularly negative sense lightning surge is particularly important.
In practical application, many communication DC power-supply systems all can tackle negative sense surge using two-stage protection,
Wherein, for second level safeguard procedures, more conventional mode is to use TVS (Transient Voltage
Suppressor, Transient Suppression Diode) finely protected as the second level.And it is usual for the first order
Protected roughly using pressure-sensitive, as shown in figure 1, setting counnter attack diode in input front end, utilize two poles
Pipe only allows the characteristic that electric current is flowed through by single direction to prevent negative sense surge.This setup is commonly applied to
The less application scenario of power ratio, can very easily cut off the path of negative sense surge, so as to prevent negative sense wave
Gush the energy that back suction inputs storage capacitor.For the application scenario that power ratio is larger, the heat consumption of diode compares
Greatly, the requirement of normal work is can not meet, at this moment, can typically set counnter attack metal-oxide-semiconductor to replace counnter attack diode
Primary protection is carried out, shown in Fig. 2, the preventing principle that metal-oxide-semiconductor carries out negative sense surge is：Detect negative sense surge
Arrival when, produce a control signal go close metal-oxide-semiconductor, and then cut off negative sense surge back suction storage capacitor
The path of energy, so that reaching prevents the purpose of negative sense surge.
But in actual engineer applied, part supply system does not set counnter attack diode and counnter attack MOS
Pipe, therefore the protection of negative sense surge can not be carried out well.How in no counnter attack diode and counnter attack MOS
Negative sense surge can also be protected in the case of pipe, it is ensured that DC-DC circuit not power down is to need to solve at present
The problem of.
The content of the invention
The main technical problem to be solved in the present invention is to provide a kind of power supply circuit, is not utilizing the pole of counnter attack two
In the case of pipe and counnter attack metal-oxide-semiconductor, negative sense surge is protected.
In order to solve the above technical problems, the present invention provides a kind of power supply circuit, including current supply circuit and negative sense wave
Gush protection circuit；The current supply circuit includes detected object；The negative sense surging protection circuit includes detection
Circuit, accumulator and control circuit；
The detection circuit is used to detect whether the sense of current for flowing through the detected object occurs anomalous variation,
When anomalous variation occurs for the sense of current, control signal is sent to the control circuit；
The control circuit is used to connect the accumulator and the current supply circuit according to the control signal；
The accumulator is used to store energy in advance and will stored in advance when it is connected with the current supply circuit
Energy is discharged into the current supply circuit.
In an embodiment of the present invention, the detected object is the linear element in the current supply circuit.
In an embodiment of the present invention, in addition to the current supply circuit two stages of circuit being connected,
The two stages of circuit is used to absorb the negative sense surge in the current supply circuit.
In an embodiment of the present invention, the accumulator include it is following two in any one：
Rechargeable accumulator, the rechargeable accumulator includes charging circuit and energy storage device, described to fill
Electric line connects charge power supply and the energy storage device, is that the energy storage device is charged；
Non- rechargeable accumulator, the non-rechargeable accumulator includes battery pack.
In an embodiment of the present invention, the energy storage device of the rechargeable accumulator is following two
Any one in kind：
Single spur track formula, including an energy storage branch road, the energy storage branch road include at least one electric capacity；
Comprising at least in multiple branch circuit formula, including multiple energy storage branch roads in parallel, each described energy storage branch road
One electric capacity.
In an embodiment of the present invention, the charging circuit connection charge power supply has with the energy storage device
Body is：The charging circuit is connected with the current supply circuit, and the energy for obtaining the current supply circuit is the storage
Can device charging.
In an embodiment of the present invention, the rechargeable accumulator also includes increasing apparatus, the liter
Pressure device and the energy storage device are in parallel, for making the voltage of the energy storage device higher than current supply circuit electricity
Pressure.
The present invention also provides a kind of negative sense carrying out surge protection method, including：
Whether the sense of current for the detected object that detection is in current supply circuit occurs anomalous variation；
When anomalous variation occurs for the sense of current, control signal is sent；
The energy stored in advance is discharged into the current supply circuit according to the control signal.
In an embodiment of the present invention, the detected object is the linear element in the current supply circuit.
In an embodiment of the present invention, it is described to be discharged the energy stored in advance according to the control signal
Also include into the current supply circuit：Prestore energy；The mode for prestoring energy includes following
Any one in two kinds：
Charge power supply and energy storage device are connected using charging circuit, is described using the energy of the charge power supply
Energy storage device is charged；
Non- rechargeable accumulator is set to prestore energy, the non-rechargeable accumulator includes battery pack.
In an embodiment of the present invention, the energy storage device is any one in following two：
Single spur track formula, including an energy storage branch road, the energy storage branch road include at least one electric capacity；
Comprising at least in multiple branch circuit formula, including multiple energy storage branch roads in parallel, each described energy storage branch road
One electric capacity.
In an embodiment of the present invention, it is sharp when connecting charge power supply and energy storage device using charging circuit
When being charged with the energy of the charge power supply for the energy storage device, the charge power supply is the power supply
Loop.
In an embodiment of the present invention, it is sharp when connecting charge power supply and energy storage device using charging circuit
When being charged with the energy of the charge power supply for the energy storage device, in addition to improve the energy storage device
Voltage, make the energy storage device voltage be higher than the current supply circuit voltage.
The beneficial effects of the invention are as follows：
The power supply circuit that the present invention is provided, using detect electric circuit inspection be in current supply circuit in detected object
The sense of current whether occur anomalous variation, when sense of current anomalous variation is detected, by control electricity
Road connects accumulator and current supply circuit, the energy that accumulator stores it in advance is discharged into current supply circuit
In, to avoid the voltage decline because of caused by negative sense surge in current supply circuit, so as to be not provided with the pole of counnter attack two
In the case of pipe and counnter attack metal-oxide-semiconductor, negative sense carrying out surge protection, normal power supply can be resisted.
Brief description of the drawings
Fig. 1 is a kind of circuit diagram with negative sense carrying out surge protection function of prior art；
Fig. 2 is another circuit diagram with negative sense carrying out surge protection function of prior art；
Fig. 3 is the schematic diagram for the power supply circuit that the embodiment of the present invention one is provided；
Fig. 4 is a kind of schematic diagram for rechargeable accumulator that the embodiment of the present invention one is provided；
Fig. 5 is the schematic diagram for another rechargeable accumulator that the embodiment of the present invention one is provided；
Fig. 6 is a kind of power supply circuit schematic diagram that the embodiment of the present invention one is provided；
Fig. 7 is another power supply circuit schematic diagram that the embodiment of the present invention one is provided；
Fig. 8 is another power supply circuit schematic diagram that the embodiment of the present invention one is provided；
Fig. 9 is the negative sense carrying out surge protection method flow diagram that the embodiment of the present invention two is provided.
Embodiment
Power supply circuit and negative sense carrying out surge protection method that the present invention is provided, it is intended to be not provided with counnter attack diode and anti-
In the case of anti-metal-oxide-semiconductor, it is ensured that power supply circuit is not influenceed by negative sense surge and the situation of power down occurs, is
Advantages of the present invention is set more to protrude, details is clearer, below by embodiment combination accompanying drawing
The present invention is described in further detail.
Embodiment one：
The power supply circuit that the present embodiment is provided the present invention is described in detail, and refer to Fig. 3, the present embodiment is carried
The power supply circuit of confession includes current supply circuit 31 and negative sense surging protection circuit 32, and current supply circuit 31 belongs to common
Current supply circuit, it includes detected object 311, and detected object 311 is among current supply circuit 31,
The sense of current of current supply circuit 31 can be characterized by flowing through the sense of current of detected object 311.Negative sense surge
Protection circuit 32 includes detection circuit 321, accumulator 322 and control circuit 323.
Detection circuit 321 is used to detect whether the sense of current of detected object 311 occurs anomalous variation, this
In anomalous variation refer to that a certain moment flows through and the direction of the operating current of detected object 311 and power back
The sense of current that the detected object 311 is flowed through during 31 normal work of road is opposite.When detection detected object 311
The sense of current occur anomalous variation when, illustrate to occur in that negative sense surge in current supply circuit 31, it is necessary to which negative sense is unrestrained
The intervention of protection circuit 32 is gushed to ensure power supply circuit normal work.At this time, detection circuit 321 can be sent
Control signal gives control circuit 323, and accumulator 322 and current supply circuit 31 are connected by control circuit 323,
The energy for allowing accumulator 322 to be prestored is discharged among current supply circuit 31, to offset negative sense surge
The voltage reduction of the current supply circuit 31 brought.
The detected object 311 that detection circuit 321 is detected can be the linear element in current supply circuit 31,
In the present embodiment, why the metal-oxide-semiconductor in selection current supply circuit 31 selects metal-oxide-semiconductor as detected object,
Mainly due to being generally provided with soft-start circuit in power supply circuit, and metal-oxide-semiconductor is in soft-start circuit
It is very common device.Or the linear element that those can also be selected to be connected with delay startup metal-oxide-semiconductor.
Detect the detected object 311 that circuit 321 is detected, it is desirable to which the purpose reached, which is to determine, flows through detected pair
As 311 sense of current, therefore, to those skilled in the art, it should can be beyond all doubt
Arrive, the running parameter of the detection detection detected object 311 of circuit 321 can have a variety of, as long as this work
Parameter can finally embody the sense of current for flowing through detected object 311.And sense of current can
It is positive and negative except current value to be embodied by many parameters, the also both end voltage value of detected object 311
It is positive and negative, therefore, detection running parameter can be electric current or voltage.
Fig. 4-5 are refer to, accumulator 322 includes rechargeable accumulator 322 ' and non-rechargeable energy storage electricity
The two types of road 322 ", a kind of form can be not limited to when accumulator 322 are set, for example, storage
Energy circuit 322 can include rechargeable accumulator 322 ' and rechargeable accumulator 322 " simultaneously, also may be used
Only to set a certain type therein, below in conjunction with accompanying drawing to setting two kinds of accumulator respectively
Situation be described in detail：
The first, sets rechargeable accumulator 322 ' as accumulator 322, as shown in figure 4, charging
Formula accumulator 322 ' includes charging circuit 3221 and energy storage device 3222, and energy storage device 3222 is mainly
For stored energy, this function can be realized by electric capacity, when energy storage device 3222 only includes an energy storage
During branch road, referred to as single spur track formula energy storage device, single spur track formula energy storage device includes at least one electric capacity.If
When energy storage device 3222 includes multiple energy storage branch roads in parallel, referred to as multiple branch circuit formula energy storage device, in multiple branch circuit
At least one electric capacity, the common energy storage of these electric capacity are included in each energy storage branch road in formula energy storage device.
It is that energy storage device 3222 charges that charging circuit 3221, which is used to connect power supply, for convenience's sake, the present embodiment
In allow charging circuit 3221 to be connected directly between on current supply circuit 31 to charge for energy storage device 3222, so can be with
Simplify circuit.
Further, in order to allow accumulator 322 in the protective action of negative sense surge it is more capable, filling
Increasing apparatus 3223 is additionally provided with electric-type accumulator 322 ', as shown in figure 5, the He of increasing apparatus 3223
Energy storage device 3222 is in parallel, and the voltage for improving energy storage device 3222 makes the voltage of energy storage device 3222
Higher than the voltage of the normal work of current supply circuit 31, it can so ensure that the energy that energy storage device 3222 is stored exists
It can also be tried one's best while offsetting negative sense surge and the voltage of current supply circuit 31 is maintained one be unlikely to allow power supply electricity
The level of road power down.On the other hand, increasing apparatus 3223 can also reduce first in energy storage device 3222
The number of device：Assuming that charging circuit 3221 is that energy storage device 3222 is filled directly using current supply circuit 31
Electricity, it may be necessary to set multiple branch circuit formula energy storage device to meet requirement, the independent work of single spur track formula energy storage device
The negative sense surge protected in current supply circuit 31 is not enough to, if but now setting increasing apparatus 3223 and list
Branch road formula energy storage device works together, then can meet requirement, and now the voltage of energy storage device 3222 is also
Can voluntarily it be adjusted according to demand.
Fig. 6 is that the metal-oxide-semiconductor in a kind of schematic diagram for the power supply circuit that the present embodiment is provided, soft-start circuit is made
For detected object, detection circuit 321 detects the voltage at its two ends.Accumulator is rechargeable accumulator
322 ', its charging circuit is connected in current supply circuit 31, is filled using current supply circuit 31 for the energy storage of multiple branch circuit formula
Charging is put, the multiple branch circuit formula energy storage device is made up of multiple electric capacity parallel connections.One is provided with charging circuit
Counnter attack diode, prevents that the energy into energy storage device from entering in current supply circuit 31 by charging circuit adverse current.
In 31 normal work of current supply circuit, sense of current flows to source by the drain electrode of the metal-oxide-semiconductor in soft-start circuit
Pole, i.e., flow to B by A, and the level of A points is less than the level of B points.At this moment detection circuit 321 can export low electricity
It is flat, but low level can not be used as effective control signal.When detection circuit 321 detects the electricity of i.e. A points
When putting down the level higher than B points, the control that detection circuit 321 can be exported on high level, control circuit 323 is opened
Close and close, accumulator is connected with current supply circuit 31, allow in accumulator the energy stored to get enter into confession
Electrical circuit 31 protects negative sense surge.Power supply circuit also includes the two stages of circuit 33 being connected with current supply circuit 3,
Two stages of circuit 33 is used to absorb the negative sense surge in current supply circuit.
A kind of schematic diagram of the power supply circuit of Fig. 7 offers is turned next to, accumulator 322 is simultaneously including filling
Electric line, energy storage device and increasing apparatus, and unlike Fig. 6：Energy storage device is filled by the energy storage of multiple branch circuit formula
Single spur track formula energy storage device has been replaced as, while add a DC-DC circuit, low-pressure direct has been circulated high pressure
Direct current.At this moment electric capacity C2 is as energy storage device, and the size of its voltage is determined by DC-DC circuit.
Second, rechargeable accumulator 322 " is set to be used as accumulator.Rechargeable accumulator 322 "
It can be the battery pack of computer room, refer to Fig. 8, the operation principle of the power supply circuit shown in Fig. 8 is with Fig. 6
Equally, repeat no more here.Fig. 8's and Fig. 6 differs only in accumulator, among Fig. 8, computer room
Battery pack, which need not be connected on current supply circuit 31, to be charged.
It is worth noting that, either setting rechargeable accumulator 322 ' or rechargeable accumulator 322 "
As accumulator 322, the time of accumulator storage energy all should be in the detection control signal of circuit 321 hair
Before going out, that is to say, that accumulator 322 should just store energy when current supply circuit normal work
Amount.
Embodiment two：
It is different whether the negative sense carrying out surge protection method that the present embodiment is provided occurs by the sense of current of detected object
Often change, when anomalous variation occurs for the sense of current for detecting detected object, illustrates occur in current supply circuit
Negative sense surge is, it is necessary to intervened to ensure power supply circuit normal work.At this time, control signal is sent,
And the energy stored in advance is discharged into the current supply circuit according to the control signal, to offset negative sense surge
The voltage reduction of the current supply circuit brought.
The negative sense carrying out surge protection method provided with reference to Fig. 9 the present embodiment is described further：
Whether the sense of current for the detected object that S901, detection are in current supply circuit occurs anomalous variation；
The detected object of detection can be provided in the linear element in current supply circuit, in the present embodiment,
Why the metal-oxide-semiconductor of selection, select metal-oxide-semiconductor as detected object, mainly due in power supply circuit
Soft-start circuit is generally provided with, and metal-oxide-semiconductor is very common device in soft-start circuit.Certainly
The linear element that those can also be selected to be connected with delay startup metal-oxide-semiconductor.
The purpose of detection is to determine the sense of current for flowing through detected object, therefore, for people in the art
For member, it should can be beyond all doubt obtain, in detection process, the running parameter that can be detected can be with
Have a variety of, as long as this running parameter can finally embody the sense of current for flowing through detected object.
It is positive and negative except current value and sense of current can be embodied by many parameters, also detected object
Both end voltage value it is positive and negative, therefore, detection running parameter can be electric current or voltage.
S902, when the sense of current occur anomalous variation when, send control signal；
Here anomalous variation refers to that a certain moment flows through direction and the power supply of the operating current of detected object
The sense of current that the detected object is flowed through during the normal work of loop is opposite.
S903, according to control signal the energy stored in advance is discharged into current supply circuit.
In the case of power supply circuit normal work, the energy prestored equivalent in unloaded operation state,
When negative sense surge arrives, control signal is sent between the device and current supply circuit that can just connect storage energy
Path, makes the energy stored in advance enter current supply circuit.
A kind of mode of storage energy is sets rechargeable accumulator to prestore energy in advance, i.e., using filling
Electric line connects charge power supply and energy storage device, is entered using the energy of the charge power supply for the energy storage device
Row charging；Although the function of energy storage device stored energy is all mainly electric capacity to undertake, energy storage is being set
During device, single spur track formula energy storage device can be set, multiple branch circuit formula energy storage device can also be set, work as energy storage
When device only includes an energy storage branch road, referred to as single spur track formula energy storage device is wrapped in single spur track formula energy storage device
Include at least one electric capacity.If the energy storage device set includes multiple energy storage branch roads in parallel, referred to as multiple branch circuit
At least one electric capacity is included in formula energy storage device, each energy storage branch road in multiple branch circuit formula energy storage device,
The common energy storage of these electric capacity.Charging circuit connects power supply and charged for energy storage device, for convenience's sake, this reality
Apply charging circuit in example and can be connected directly between on current supply circuit and charged for energy storage device, can so simplify electricity
Road.
Further, boosting processing can also be carried out to energy storage device, allows accumulator in the anti-of negative sense surge
More capable in shield effect, for example, also setting up increasing apparatus in rechargeable accumulator, energy storage device is simultaneously
Connection, improves the voltage of energy storage device, the voltage of energy storage device is higher than the voltage of current supply circuit normal work,
The energy of energy storage device storage can so be ensured can also try one's best current supply circuit while negative sense surge is offset
Voltage maintain a level for being unlikely to allow power supply circuit power down.On the other hand, increasing apparatus
The number of component in energy storage device can also be reduced：Assuming that charging circuit is directly filled using current supply circuit for energy storage
Put and charged, it may be necessary to set multiple branch circuit formula energy storage device to meet requirement, single spur track formula energy storage dress
The negative sense surge for working independently and being not enough to protect in current supply circuit is put, if but now setting increasing apparatus and list
Branch road formula energy storage device works together, then can meet requirement, and now the voltage of energy storage device can be with
Voluntarily adjusted according to demand.
Another mode for storing energy in advance need not be charged, that is, set non-rechargeable energy storage
Circuit prestores energy, such as using battery, and the energy of the battery pack of such as computer room protects negative sense surge.
Computer room battery pack, which need not be connected on current supply circuit, to be charged.
It is worth noting that, either setting rechargeable accumulator to be also that non-rechargeable accumulator is stored up in advance
Can, before the time of storage energy should all send sending control signal.
In addition, for finer protection negative sense surge, two stages of circuit and current supply circuit can also be set
Connection, when occurring negative sense surge in current supply circuit, absorbs the negative sense surge in current supply circuit.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to recognized
The specific implementation of the fixed present invention is confined to these explanations.For the ordinary skill of the technical field of the invention
For personnel, without departing from the inventive concept of the premise, some simple deduction or replace can also be made,
Protection scope of the present invention should be all considered as belonging to.
Claims (13)
1. a kind of power supply circuit, it is characterised in that including current supply circuit and negative sense surging protection circuit；
The current supply circuit includes detected object；The negative sense surging protection circuit includes detection circuit, energy storage electricity
Road and control circuit；
The detection circuit is used to detect whether the sense of current for flowing through the detected object occurs abnormal change
Change, when anomalous variation occurs for the sense of current, control signal is sent to the control circuit；
The control circuit is used to connect the accumulator and the current supply circuit according to the control signal；
The accumulator is used to store energy in advance and will stored in advance when it is connected with the current supply circuit
Energy is discharged into the current supply circuit.
2. power supply circuit as claimed in claim 1, it is characterised in that the detected object is institute
State the linear element in current supply circuit.
3. power supply circuit as claimed in claim 1, it is characterised in that also including being powered back with described
The two stages of circuit of road connection, the negative sense wave that the two stages of circuit is used to absorb in the current supply circuit
Gush.
4. the power supply circuit as described in claim any one of 1-3, it is characterised in that the energy storage electricity
Road include it is following two in any one：
Rechargeable accumulator, the rechargeable accumulator includes charging circuit and energy storage device, described to fill
Electric line connects charge power supply and the energy storage device, is that the energy storage device is charged；
Non- rechargeable accumulator, the non-rechargeable accumulator includes battery pack.
5. power supply circuit as claimed in claim 4, it is characterised in that the rechargeable accumulator
The energy storage device be any one in following two：
Single spur track formula, including an energy storage branch road, the energy storage branch road include at least one electric capacity；
Multiple branch circuit formula, including multiple energy storage branch roads in parallel, each described energy storage branch road are included at least
One electric capacity.
6. power supply circuit as claimed in claim 4, it is characterised in that the charging circuit connection is filled
Power supply is specially with the energy storage device：The charging circuit is connected with the current supply circuit, obtains described
The energy of current supply circuit charges for the energy storage device.
7. power supply circuit as claimed in claim 4, it is characterised in that the rechargeable accumulator
Also include increasing apparatus, the increasing apparatus and the energy storage device are in parallel, for making the energy storage device
Voltage is higher than the current supply circuit voltage.
8. a kind of negative sense carrying out surge protection method, it is characterised in that including：
Whether the sense of current for the detected object that detection is in current supply circuit occurs anomalous variation；
When anomalous variation occurs for the sense of current, control signal is sent；
The energy stored in advance is discharged into the current supply circuit according to the control signal.
9. negative sense carrying out surge protection method as claimed in claim 8, it is characterised in that described to be detected
Object is the linear element in the current supply circuit.
10. negative sense carrying out surge protection method as claimed in claim 8 or 9, it is characterised in that described
The energy stored in advance, which is discharged into the current supply circuit, according to the control signal also includes：Prestore energy
Amount；The mode for prestoring energy include it is following two in any one：
Charge power supply and energy storage device are connected using charging circuit, is described using the energy of the charge power supply
Energy storage device is charged；
Non- rechargeable accumulator is set to prestore energy, the non-rechargeable accumulator includes battery pack.
11. negative sense carrying out surge protection method as claimed in claim 10, it is characterised in that the energy storage dress
Be set to it is following two in any one：
Single spur track formula, including an energy storage branch road, the energy storage branch road include at least one electric capacity；
Comprising at least in multiple branch circuit formula, including multiple energy storage branch roads in parallel, each described energy storage branch road
One electric capacity.
12. negative sense carrying out surge protection method as claimed in claim 10, it is characterised in that charged when using
Circuit connects charge power supply and energy storage device, is carried out using the energy of the charge power supply for the energy storage device
During charging, the charge power supply is the current supply circuit.
13. negative sense carrying out surge protection method as claimed in claim 10, it is characterised in that charged when using
Circuit connects charge power supply and energy storage device, is carried out using the energy of the charge power supply for the energy storage device
During charging, in addition to the voltage of the energy storage device is improved, the voltage of the energy storage device is supplied higher than described
Electrical circuit voltage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194218.4A CN107294365A (en) | 2016-03-30 | 2016-03-30 | A kind of power supply circuit and negative sense carrying out surge protection method |
| PCT/CN2017/077566 WO2017167079A1 (en) | 2016-03-30 | 2017-03-21 | Power supply circuit and negative surge protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194218.4A CN107294365A (en) | 2016-03-30 | 2016-03-30 | A kind of power supply circuit and negative sense carrying out surge protection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107294365A true CN107294365A (en) | 2017-10-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610194218.4A Pending CN107294365A (en) | 2016-03-30 | 2016-03-30 | A kind of power supply circuit and negative sense carrying out surge protection method |
Country Status (2)
| Country | Link |
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| CN (1) | CN107294365A (en) |
| WO (1) | WO2017167079A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112506843B (en) * | 2020-12-18 | 2023-05-05 | 陕西航空电气有限责任公司 | Electric interface for embedded software upgrade of generator controller |
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| CN102118106A (en) * | 2009-12-31 | 2011-07-06 | Nxp股份有限公司 | Surge protection circuit |
| CN202772567U (en) * | 2012-09-11 | 2013-03-06 | 成都新欣神风电子科技有限公司 | Global function airplane power supply characteristic protective device |
| CN103683885A (en) * | 2013-12-12 | 2014-03-26 | 安伏（苏州）电子有限公司 | Device for preventing electric current backward flowing and output capacitor discharging |
| CN103904620A (en) * | 2012-12-28 | 2014-07-02 | 中兴通讯股份有限公司 | Direct current power supply input reverse irrigation prevention circuit and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322522A (en) * | 2014-06-24 | 2016-02-10 | 中兴通讯股份有限公司 | Method and circuit for restraining surge current of DC electrical source |
-
2016
- 2016-03-30 CN CN201610194218.4A patent/CN107294365A/en active Pending
-
2017
- 2017-03-21 WO PCT/CN2017/077566 patent/WO2017167079A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11332130A (en) * | 1998-05-19 | 1999-11-30 | Hitachi Ltd | Uninterruptible power supply |
| CN102118106A (en) * | 2009-12-31 | 2011-07-06 | Nxp股份有限公司 | Surge protection circuit |
| CN202772567U (en) * | 2012-09-11 | 2013-03-06 | 成都新欣神风电子科技有限公司 | Global function airplane power supply characteristic protective device |
| CN103904620A (en) * | 2012-12-28 | 2014-07-02 | 中兴通讯股份有限公司 | Direct current power supply input reverse irrigation prevention circuit and method |
| CN103683885A (en) * | 2013-12-12 | 2014-03-26 | 安伏（苏州）电子有限公司 | Device for preventing electric current backward flowing and output capacitor discharging |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017167079A1 (en) | 2017-10-05 |
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