CN105514960B - One kind classification timing current limiting protecting method - Google Patents
One kind classification timing current limiting protecting method Download PDFInfo
- Publication number
- CN105514960B CN105514960B CN201510876682.7A CN201510876682A CN105514960B CN 105514960 B CN105514960 B CN 105514960B CN 201510876682 A CN201510876682 A CN 201510876682A CN 105514960 B CN105514960 B CN 105514960B
- Authority
- CN
- China
- Prior art keywords
- current
- circuit
- classification
- timing
- output
- 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.)
- Active
Links
Classifications
-
- 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
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
Abstract
The invention discloses one kind to be classified timing current limiting protecting method, and it is concretely comprised the following steps：Build including current sample and modulate circuit（1）, current closed-loop regulation circuit（2）, classification current modulate circuit（6）, classification current timing circuit（7）, current reference circuit（4）, pulse blocking circuit（5）Output circuit is driven with stopping（3）Classification timing current-limiting protection system；Current sample and modulate circuit（1）Real-time sampling simultaneously nurses one's health current signal, classification current modulate circuit（6）, classification current timing circuit（7）And current reference circuit（4）Limit electric power outputting current, pulse blocking circuit（5）Output circuit is driven with stopping（3）Stop power supply output；So far classification timing current-limiting protection is realized.This method avoids output current from occurring very big current spike always, and output current can be made to avoid long-time overcurrent problem during Power supply belt pulse load according to different current classes and its work delay time work.
Description
Technical field
The present invention relates to a kind of current limiting protecting method, particularly a kind of classification timing current limiting protecting method.
Background technology
The overcurrent protection function of existing power supply is more single at present, is mainly protected using fixed-point type, that is, works as load current value
After the rotection thresholds for reaching fixed-point type protection setting, current reference is set as rotection thresholds by power control circuit, now power supply
Into current-limit mode.But under pulse load occasion, this kind of fixed-point type guard method can not meet that the pulse load of load makes
With demand, cause power supply to protect by mistake, easily form trouble point；And Power Management Design capacity increases, cost is larger, causes the wasting of resources
Phenomenon.
The content of the invention
Present invention aims at a kind of classification timing current limiting protecting method is provided, solves the circuit of current current limiting protecting method
It is single, can only provide a current-limiting protection value and under pulse load protect easily formed failure the problem of.
One kind classification timing current limiting protecting method, it is concretely comprised the following steps：
The first step builds classification timing current-limiting protection system
Timing current-limiting protection system is classified, including：Current sample and modulate circuit, current closed-loop regulation circuit, classification electricity
Flow modulate circuit, classification current timing circuit, current reference circuit, pulse blocking circuit and stop driving output circuit, wherein
Classification current modulate circuit and classification current timing circuit are N number of, wherein, 1≤N≤10.
The output end of current sample and modulate circuit adjusts circuit and N number of classification current modulate circuit with current closed-loop respectively
Input connection, the output end of classification current modulate circuit be connected with the input of classification current timing circuit, it is N number of be classified it is electric
Input of the output end of timing circuit respectively with current reference circuit and pulse blocking circuit is flowed to be connected, current reference circuit
Output end is connected with current closed-loop regulation circuit input end, and the output end of pulse blocking circuit is with stopping the defeated of driving output circuit
Enter end connection.
Second step current sample and modulate circuit real-time sampling simultaneously nurse one's health current signal
Current sample and modulate circuit gather the electric current of power supply output in real time, current signal are converted into voltage signal, together
When, voltage signal is filtered, filters out the interference signal contained in voltage signal, obtained voltage signal is as current closed-loop
Adjust the input signal of circuit.
3rd step classification current modulate circuit, classification current timing circuit and current reference circuit limitation electric power outputting current
Current sample and the signal input classification current modulate circuit of modulate circuit output, classification current modulate circuit produce
Signal input classification current timing circuit, classification current timing circuit is classified to the obtained output current size of sampling,
And the delay time of different size electric current is configured, when output current continuously reaches classification current limitation, and duration
After reaching delay time, corresponding signal input regulation current reference circuit is produced, current reference circuit produces according to input signal
Corresponding current reference signal input current closed loop regulation circuit, is not further added by so as to adjust electric power outputting current, so as to limit electricity
Source output current size.
4th pace pulse lockout circuit and stopping driving output circuit stop power supply output
After electric power outputting current size exceedes current protection setting value and the duration reaches guardtime setting value, point
Level electric current timing circuit produces action signal, action signal is input to pulse blocking circuit, and pulse blocking circuit is according to receiving
Action signal produces control signal and is input to stopping driving output circuit, stops driving output circuit and is believed according to the control received
Number, the driving pulse of main power component is blocked, power supply is stopped.
So far, classification timing current-limiting protection is realized.
When this method realizes Power supply belt pulse load, output current is avoided to occur very big current spike always, can
Output current is set to avoid long-time during Power supply belt pulse load according to different current classes and its work delay time work
Overcurrent problem.
Brief description of the drawings
A kind of classification timing current-limiting protection system schematics being classified described in timing current limiting protecting method of Fig. 1.
1. current sample and the current closed-loop of modulate circuit 2. regulation circuit 3. stop the driving current reference of output circuit 4.
The classification current timing circuit of 5. pulse blocking circuit of circuit, 6. classification current modulate circuit 7.
Embodiment
One kind classification timing current limiting protecting method, it is concretely comprised the following steps：
The first step builds classification timing current-limiting protection system
Timing current-limiting protection system is classified, including：Current sample and modulate circuit 1, current closed-loop regulation circuit 2, classification
Current regulating circuit 6, classification current timing circuit 7, current reference circuit 4, pulse blocking circuit 5 and stopping driving output circuit
3, wherein classification current modulate circuit 6 and classification current timing circuit 7 is N number of, wherein, 1≤N≤10.
The output end of current sample and modulate circuit 1 adjusts circuit 2 and N number of classification current conditioning electricity with current closed-loop respectively
The input connection on road 6, the output end of classification current modulate circuit 6 is connected with the input of classification current timing circuit 7, N number of
Input of the output end of classification current timing circuit 7 respectively with current reference circuit 4 and pulse blocking circuit 5 is connected, electric current
The output end of reference circuit 4 is connected with the current closed-loop regulation input of circuit 2, and the output end of pulse blocking circuit 5 is driven with stopping
The input connection of dynamic output circuit 3.
Second step current sample and the real-time sampling of modulate circuit 1 simultaneously nurse one's health current signal
Current sample and modulate circuit 1 gather the electric current of power supply output in real time, current signal are converted into voltage signal, together
When, voltage signal is filtered, filters out the interference signal contained in voltage signal, obtained voltage signal is as current closed-loop
Adjust the input signal of circuit 2.
3rd step classification current modulate circuit 6, classification current timing circuit 7 and current reference circuit 4 limit power supply output
Electric current
The signal input classification current modulate circuit 6 that current sample and modulate circuit 1 export, classification current modulate circuit 6
Caused signal input classification current timing circuit 7, classification current timing circuit 7 is carried out to the output current size that sampling obtains
Classification, and the delay time of different size electric current is configured, limited when output current continuously reaches classification current, and continue
After time reaches delay time, corresponding signal input regulation current reference circuit 4 is produced, current reference circuit 4 is believed according to input
Number, corresponding current reference signal input current closed loop regulation circuit 2 is produced, is not further added by so as to adjust electric power outputting current, from
And limit electric power outputting current size.
4th pace pulse lockout circuit 5 and stopping driving output circuit 3 stop power supply output
After electric power outputting current size exceedes current protection setting value and the duration reaches guardtime setting value, point
Level electric current timing circuit 7 produces action signal, and action signal is input to pulse blocking circuit 5, and pulse blocking circuit 5 is according to receiving
Action signal produce control signal be input to stopping driving output circuit 3, stop driving output circuit 3 according to the control received
Signal, blocks the driving pulse of main power component, and power supply is stopped.
So far, classification timing current-limiting protection is realized.
Claims (1)
1. one kind classification timing current limiting protecting method, it is characterised in that concretely comprise the following steps：
The first step builds classification timing current-limiting protection system
Timing current-limiting protection system is classified, including：Current sample and modulate circuit (1), current closed-loop regulation circuit (2), classification
Current regulating circuit (6), classification current timing circuit (7), current reference circuit (4), pulse blocking circuit (5) and stopping driving
Output circuit (3), wherein classification current modulate circuit (6) and classification current timing circuit (7) they are N number of, wherein, 1≤N≤
10；
The output end of current sample and modulate circuit (1) is electric with current closed-loop regulation circuit (2) and the conditioning of N number of classification current respectively
The input connection on road (6), the output end of classification current modulate circuit (6) connect with the input of classification current timing circuit (7)
Connect, the output end input with current reference circuit (4) and pulse blocking circuit (5) respectively of N number of classification current timing circuit (7)
End connection, the output end of current reference circuit (4) are connected with current closed-loop regulation circuit (2) input, pulse blocking circuit (5)
Output end with stop driving output circuit (3) input be connected；
Second step current sample and modulate circuit (1) real-time sampling simultaneously nurse one's health current signal
Current sample and the electric current of modulate circuit (1) collection power supply output in real time, are converted to voltage signal, together by current signal
When, voltage signal is filtered, filters out the interference signal contained in voltage signal, obtained voltage signal is as current closed-loop
Adjust the input signal of circuit (2)；
3rd step classification current modulate circuit (6), classification current timing circuit (7) and current reference circuit (4) limitation power supply are defeated
Go out electric current
Current sample and the signal input classification current modulate circuit (6) of modulate circuit (1) output, classification current modulate circuit
(6) signal input classification current timing circuit (7) caused by, the output current that classification current timing circuit (7) obtains to sampling
Size is classified, and the delay time of different size electric current is configured, when output current continuously reaches classification current limit
System, and after the duration reaches delay time, produce corresponding signal input regulation current reference circuit (4), current reference circuit
(4) according to input signal, corresponding current reference signal input current closed loop regulation circuit (2) is produced, so as to adjust power supply output
Electric current is not further added by, so as to limit electric power outputting current size；
4th pace pulse lockout circuit (5) and stopping driving output circuit (3) stop power supply output
After electric power outputting current size exceedes current protection setting value and the duration reaches guardtime setting value, classification electricity
Flow timing circuit (7) and produce action signal, action signal is input to pulse blocking circuit (5), and pulse blocking circuit (5) is according to receipts
To action signal produce control signal and be input to stopping driving output circuit (3), stop driving output circuit (3) according to receiving
Control signal, block the driving pulse of main power component, power supply is stopped；
So far, classification timing current-limiting protection is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510876682.7A CN105514960B (en) | 2015-12-03 | 2015-12-03 | One kind classification timing current limiting protecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510876682.7A CN105514960B (en) | 2015-12-03 | 2015-12-03 | One kind classification timing current limiting protecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105514960A CN105514960A (en) | 2016-04-20 |
| CN105514960B true CN105514960B (en) | 2017-12-29 |
Family
ID=55722726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510876682.7A Active CN105514960B (en) | 2015-12-03 | 2015-12-03 | One kind classification timing current limiting protecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105514960B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498548B (en) * | 2022-01-21 | 2023-10-31 | 科威尔技术股份有限公司 | Overcurrent protection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203368016U (en) * | 2013-07-23 | 2013-12-25 | 深圳市晶福源电子技术有限公司 | Overload current-limiting protection circuit |
| CN104247197A (en) * | 2012-04-24 | 2014-12-24 | 矢崎总业株式会社 | Protection device for electricity supply circuit |
| CN104269818A (en) * | 2008-06-13 | 2015-01-07 | 矢崎总业株式会社 | Protection Device For Load Circuit |
| CN104577945A (en) * | 2014-12-26 | 2015-04-29 | 常熟开关制造有限公司(原常熟开关厂） | Directional current protection method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7330343B2 (en) * | 2005-02-04 | 2008-02-12 | Topower Computer Industrial Co., Ltd. | Current-limiting protection circuit for a power supply |
| US7948729B2 (en) * | 2009-06-29 | 2011-05-24 | Summit Microelectronics, Inc. | Method and circuit for over-current protection |
-
2015
- 2015-12-03 CN CN201510876682.7A patent/CN105514960B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269818A (en) * | 2008-06-13 | 2015-01-07 | 矢崎总业株式会社 | Protection Device For Load Circuit |
| CN104247197A (en) * | 2012-04-24 | 2014-12-24 | 矢崎总业株式会社 | Protection device for electricity supply circuit |
| CN203368016U (en) * | 2013-07-23 | 2013-12-25 | 深圳市晶福源电子技术有限公司 | Overload current-limiting protection circuit |
| CN104577945A (en) * | 2014-12-26 | 2015-04-29 | 常熟开关制造有限公司(原常熟开关厂） | Directional current protection method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105514960A (en) | 2016-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2457258B1 (en) | Bypass and protection circuit for a solar module and method for controlling a solar module | |
| CN102957173B (en) | Multi-cell serially-connected lithium battery pack equalization and protection system | |
| CN102315632A (en) | Driving circuit for inhibiting over current of IGBT (Insulated Gate Bipolar Transistor) | |
| CN103956708A (en) | Overload measurement and control circuit for low-voltage direct current load | |
| CN105027375A (en) | Alternator overvoltage protection circuit | |
| CN103022963B (en) | High-end over-current protection circuit | |
| CN104078940A (en) | Secondary power system and power supply device | |
| MX2013010517A (en) | Gate control circuit, power module and associated method. | |
| CN104410038B (en) | One kind electric discharge regulation circuit overvoltage crowbar | |
| CN105514960B (en) | One kind classification timing current limiting protecting method | |
| CN104767368B (en) | A kind of highly reliable three-level inverter circuit Current limited Control method | |
| CN103887973A (en) | Method and system controlling reverse current to generate power tube voltage stress | |
| CN206894213U (en) | Current foldback circuit | |
| CN103956721B (en) | Battery anti-explosion circuit and battery charger | |
| CN103802841A (en) | Electric locomotive traction control unit and control method | |
| CN102820848A (en) | VOC voltage automatic adjusting method and frequency converter using same | |
| CN104660247B (en) | A kind of bidirectional interface circuit | |
| CN204216598U (en) | Battery charging and discharging device and management circuit | |
| CN104393571A (en) | IGBT module over-current protection system | |
| CN103929104A (en) | Drive circuit without extra drive power source | |
| CN204424877U (en) | A kind of IGBT module Over Current Protection System | |
| CN104242248B (en) | Multiple power supplies are monitored and protection circuit | |
| CN104995837B (en) | The method of the protective device of semiconductor switch and the protective device for running semiconductor switch | |
| CN203747633U (en) | IGBT driving circuit | |
| CN203839918U (en) | Low-voltage direct current load overloading measurement and control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |