CN112234680A - Automatic power-off device based on existing insulating charger - Google Patents
Automatic power-off device based on existing insulating charger Download PDFInfo
- Publication number
- CN112234680A CN112234680A CN202011188142.7A CN202011188142A CN112234680A CN 112234680 A CN112234680 A CN 112234680A CN 202011188142 A CN202011188142 A CN 202011188142A CN 112234680 A CN112234680 A CN 112234680A
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- CN
- China
- Prior art keywords
- triode
- charger
- potentiometer
- electrode
- regulator tube
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
Abstract
The invention relates to the technical field of equipment maintenance, in particular to an automatic power-off device based on the existing insulating charger; the device comprises a diode I, a potentiometer II, a voltage-regulator tube III, a capacitor IV, a triode V, a triode VI, a relay VII, a leakage protector VIII, a charger IX and a battery X, wherein the base stage of the triode V is connected to one end of the potentiometer II, a collector electrode is connected to the sliding end of the potentiometer II through a coil of the relay VII, an emitter electrode is connected to the base electrode of the triode VI, the collector electrode of the triode VI is also connected to the sliding end of the potentiometer II through the capacitor, the emitter electrode is connected to the anode of the voltage-regulator tube III, the anode of the voltage-regulator tube III is connected to the cathode of the charger IX, and the cathode of the voltage-regulator tube III is connected to one end; the leakage protector VIII is connected with a charger IX in series and then is connected to a 220V power supply; the test trip button switch on the small leakage protector is utilized, the 12V relay is used for attracting the closed contact, so that the test trip contact is closed to cut off the main power supply, the service life of the battery can be effectively prolonged, and certain electric energy is saved.
Description
Technical Field
The invention relates to the technical field of equipment maintenance, in particular to an automatic power-off device based on an existing insulating charger.
Background
The insulation megger is used for measuring the megaohm-level resistance meter of the insulation resistance of various electrical equipment, and the megaohm-level meter is used for measuring the insulation resistance conveniently and reliably. The existing electronic insulation megger is widely applied to the field of insulation measurement of electrical equipment, a built-in battery of the electronic insulation megger can be charged, the purpose of automatic power off after full charge cannot be realized when the battery is charged rightly at present, and the battery can be damaged after long-time charging after the battery is fully charged, so that the service life of the battery is shortened.
Disclosure of Invention
The invention provides an automatic power-off device which can automatically cut off a power supply when a battery is fully charged, in order to avoid damaging the battery after the battery is fully charged for a long time and reduce the service life of the battery.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an automatic power-off device based on an existing insulating charger comprises a diode I, a potentiometer II, a voltage-regulator tube III, a capacitor IV, a triode V, a triode VI, a relay VII, a leakage protector VIII, a charger IX and a battery X, wherein the base stage of the triode V is connected to one end of the potentiometer II, the collector electrode of the triode V is connected to the sliding end of the potentiometer II through a coil of the relay VII, the emitter electrode of the triode V is connected to the base electrode of the triode VI, the collector electrode of the triode VI is also connected to the sliding end of the potentiometer II through the capacitor, the emitter electrode of the triode VI is connected to the anode of the voltage-regulator tube and is also connected to the cathodes of the charger IX and the battery X, the anode of the voltage-regulator tube III is connected to the cathode of the charger IX, the cathode of the voltage-regulator tube III is connected to one end of the potentiometer, and the sliding end of the potentiometer II is also connected to the, the positive electrode of the diode I is also connected with the positive electrode of the charger; the leakage protector VIII is connected with a charger IX in series and then is connected to a 220V power supply; and a normally open contact of the relay VII is connected in series to a trial tripping closed loop of the leakage protector VIII.
The working principle is as follows: the critical condition when fully charged is utilized to cause a short circuit of the switch, thereby cutting off the mains supply. When the battery is fully charged, the charging loop does not work, the voltage of the base electrodes of the triodes is unbalanced at the moment, so that the collector electrodes obtain amplified current, the current passing through the relay reaches attraction current under the amplification action of the two triodes, the normally open contact is closed, the leakage protector tries to jump to form a closed loop, namely, a short circuit is formed, and the leakage protector trips to cut off the main power supply of the charger after the short circuit.
After the main power supply is turned off, a diode is connected in series with the positive electrode of the charger output 14.4 to prevent the current of the battery from entering the circuit, so that the current of the charger is cut off, and meanwhile, the battery cannot supply power to the circuit.
Compared with the prior art, the invention has the following beneficial effects:
the test trip button switch on the small leakage protector which is not used in the past is utilized, the 12V relay is used for attracting the closed contact, the test trip contact is closed to cut off the main power supply, the service life of the battery can be effectively prolonged, and certain electric energy is saved.
Drawings
Fig. 1 is a schematic circuit diagram of an automatic power-off device of a conventional insulated charger according to the present invention.
Detailed Description
The present invention is further illustrated by the following specific examples.
Examples
As shown in figure 1, the automatic power-off device based on the existing insulating charger comprises a diode I, a potentiometer II, a voltage regulator tube III, a capacitor IV, a triode V, a triode VI, a relay VII, a leakage protector VIII, a charger IX and a battery X, wherein the base stage of the triode V is connected to one end of the potentiometer II, the collector electrode of the triode V is connected to the sliding end of the potentiometer II through a coil of the relay VII, the emitter electrode of the triode V is connected to the base electrode of the triode VI, the collector electrode of the triode VI is also connected to the sliding end of the potentiometer II through the capacitor, the emitter electrode of the triode VI is connected to the positive electrode of the voltage regulator tube and is also connected to the negative electrodes of the charger IX and the battery X, the positive electrode of the voltage regulator tube III is connected to the negative electrode of the charger IX, the negative electrode of the voltage regulator tube III is connected to one end of the potentiometer, and the sliding end of the potentiometer II is also connected, the positive electrode of the diode I is also connected with the positive electrode of the charger; the leakage protector VIII is connected with a charger IX in series and then is connected to a 220V power supply; and a normally open contact of the relay VII is connected in series to a trial tripping closed loop of the leakage protector VIII.
Furthermore, two current-limiting resistors are connected between the triode V and the potentiometer II, and one of the current-limiting resistors is also positioned between the negative electrode of the voltage regulator tube III and the base level of the triode V.
Furthermore, the triode V and the triode VI are both 9013 triodes.
The working principle is as follows: the critical condition when fully charged is utilized to cause a short circuit of the switch, thereby cutting off the mains supply. When the battery is fully charged, the charging loop does not work, the voltage of the base electrodes of the triodes is unbalanced at the moment, so that the collector electrodes obtain amplified current, the current passing through the relay reaches attraction current under the amplification action of the two triodes, the normally open contact is closed, the leakage protector tries to jump to form a closed loop, namely, a short circuit is formed, and the leakage protector trips to cut off the main power supply of the charger after the short circuit. The 12V relay is used for closing the contact by using the previously unused trial tripping button switch on the small leakage protector, so that the trial tripping switch acts to cut off the main power supply.
Claims (3)
1. An automatic power-off device based on an existing insulating charger is characterized by comprising a diode I, a potentiometer II, a voltage regulator tube III, a capacitor IV, a triode V, a triode VI, a relay VII, a leakage protector VIII, a charger IX and a battery X, wherein the base stage of the triode V is connected to one end of the potentiometer II, the collector electrode of the triode V is connected to the sliding end of the potentiometer II through a coil of the relay VII, the emitter electrode of the triode V is connected to the base electrode of the triode VI, the collector electrode of the triode VI is also connected to the sliding end of the potentiometer II through the capacitor, the emitter electrode of the triode VI is connected to the positive electrode of the voltage regulator tube and is also connected to the negative electrodes of the charger IX and the battery X, the positive electrode of the voltage regulator tube III is connected to the negative electrode of the charger IX, the negative electrode of the voltage regulator tube III is connected to one end of the potentiometer, and the sliding end of the potentiometer II is also connected to the positive, the positive electrode of the diode I is also connected with the positive electrode of the charger; the leakage protector VIII is connected with a charger IX in series and then is connected to a 220V power supply; and a normally open contact of the relay VII is connected in series to a trial tripping closed loop of the leakage protector VIII.
2. The automatic power-off device based on the existing insulating charger as claimed in claim 1, wherein two current-limiting resistors are connected between the triode V and the potentiometer II, and one of the current-limiting resistors is further located between the negative electrode of the voltage regulator tube III and the base stage of the triode V.
3. The automatic power-off device based on the existing insulating charger as claimed in claim 1, wherein the transistor V and the transistor VI are both 9013 transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188142.7A CN112234680A (en) | 2020-10-30 | 2020-10-30 | Automatic power-off device based on existing insulating charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188142.7A CN112234680A (en) | 2020-10-30 | 2020-10-30 | Automatic power-off device based on existing insulating charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112234680A true CN112234680A (en) | 2021-01-15 |
Family
ID=74121751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011188142.7A Pending CN112234680A (en) | 2020-10-30 | 2020-10-30 | Automatic power-off device based on existing insulating charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112234680A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709999A (en) * | 2012-06-12 | 2012-10-03 | 六盘水金星机电设备有限公司 | Energy-saving charger |
| CN202550637U (en) * | 2012-02-21 | 2012-11-21 | 周桂宝 | Self-adaptive energy-saving charging maintainer for electric vehicle storage battery |
| US20140285937A1 (en) * | 2013-03-20 | 2014-09-25 | Zhiyong Xiang | Circuit and method of over-voltage protection |
| CN104617560A (en) * | 2013-11-04 | 2015-05-13 | 深圳市海洋王照明工程有限公司 | Battery over-discharge protection circuit |
| CN205610295U (en) * | 2016-01-29 | 2016-09-28 | 杭州零尔电力科技有限公司 | Charging circuit of lithium cell group |
| CN205864360U (en) * | 2016-06-29 | 2017-01-04 | 集宁师范学院 | Control circuit for solaode output voltage |
| CN206349788U (en) * | 2016-12-30 | 2017-07-21 | 广东金莱特电器股份有限公司 | A kind of novel capacitance-type, which is full of, turns lamp control circuit |
| CN206977072U (en) * | 2017-04-28 | 2018-02-06 | 江门市蓬江区金赢科技有限公司 | A kind of band overcharges protection and battery status instruction charging circuit |
| KR20190006804A (en) * | 2017-07-11 | 2019-01-21 | 엘지이노텍 주식회사 | Led apparatus |
-
2020
- 2020-10-30 CN CN202011188142.7A patent/CN112234680A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202550637U (en) * | 2012-02-21 | 2012-11-21 | 周桂宝 | Self-adaptive energy-saving charging maintainer for electric vehicle storage battery |
| CN102709999A (en) * | 2012-06-12 | 2012-10-03 | 六盘水金星机电设备有限公司 | Energy-saving charger |
| US20140285937A1 (en) * | 2013-03-20 | 2014-09-25 | Zhiyong Xiang | Circuit and method of over-voltage protection |
| CN104617560A (en) * | 2013-11-04 | 2015-05-13 | 深圳市海洋王照明工程有限公司 | Battery over-discharge protection circuit |
| CN205610295U (en) * | 2016-01-29 | 2016-09-28 | 杭州零尔电力科技有限公司 | Charging circuit of lithium cell group |
| CN205864360U (en) * | 2016-06-29 | 2017-01-04 | 集宁师范学院 | Control circuit for solaode output voltage |
| CN206349788U (en) * | 2016-12-30 | 2017-07-21 | 广东金莱特电器股份有限公司 | A kind of novel capacitance-type, which is full of, turns lamp control circuit |
| CN206977072U (en) * | 2017-04-28 | 2018-02-06 | 江门市蓬江区金赢科技有限公司 | A kind of band overcharges protection and battery status instruction charging circuit |
| KR20190006804A (en) * | 2017-07-11 | 2019-01-21 | 엘지이노텍 주식회사 | Led apparatus |
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