CN107863956B - Dynamic electrode arc-extinguishing device - Google Patents
Dynamic electrode arc-extinguishing device Download PDFInfo
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- CN107863956B CN107863956B CN201711070356.2A CN201711070356A CN107863956B CN 107863956 B CN107863956 B CN 107863956B CN 201711070356 A CN201711070356 A CN 201711070356A CN 107863956 B CN107863956 B CN 107863956B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/003—Modifications for increasing the reliability for protection
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to a dynamic electrode arc-extinguishing device, belonging to the field of electricity, in particular to a dynamic electrode arc-extinguishing device suitable for extinguishing arc of a dynamic electrode, which comprises a first electrode, a second electrode and an electronic arc-extinguishing device; the first electrode is connected with the second electrode through the electronic arc extinguishing device; the first electrode, the second electrode and the third electrode are connected; the first electrode, the third electrode and the load to be controlled form a series loop; the electronic arc extinguishing device is used for arc extinguishing when the first electrode is separated relative to the third electrode.
Description
Technical Field
The invention discloses a dynamic electrode arc-extinguishing device, which belongs to the field of electricity, in particular to a dynamic electrode arc-extinguishing device suitable for extinguishing arc of a dynamic electrode.
Background
In various power utilization occasions, devices with dynamic electrodes, such as an electric tool, a voltage regulator, a plug, a socket and the like, are widely used, but when an electric brush and a rotor of the electric tool work, a larger electric arc exists, the service lives of the electric brush and the rotor are greatly influenced, and the traditional plug and the socket have the defect of larger electric arc when being plugged with loads.
Disclosure of Invention
The invention aims to provide a dynamic electrode arc-extinguishing device aiming at the defect that the existing device with a dynamic electrode has larger arc during breaking.
The purpose of the invention is achieved by the following technical scheme:
a dynamic electrode arc-extinguishing device comprises a first electrode, a second electrode and an electronic arc-extinguishing device; the first electrode is connected with the second electrode through the electronic arc extinguishing device; the first electrode, the second electrode and the third electrode are connected; the first electrode, the third electrode and the load to be controlled form a series loop; the electronic arc-extinguishing device is used for extinguishing arc when the first electrode is separated relative to the third electrode.
A dynamic electrode arc-extinguishing device, the relative state of a first electrode, a second electrode and a third electrode comprises: the first electrode and the second electrode are simultaneously connected with the third electrode; the first electrode is separated from the third electrode, and the second electrode is kept connected with the third electrode; the second electrode is separated from the third electrode.
A dynamic electrode arc-extinguishing device is provided, wherein a third electrode is connected with a first electrode and a second electrode in a sliding or rolling mode.
A dynamic electrode arc-extinguishing device, the first electrode and the second electrode are electric brushes.
A third electrode is a motor rotor electrode.
A dynamic electrode arc-extinguishing device, the first electrode and the second electrode are socket contact pieces.
A dynamic electrode arc-extinguishing device, the first electrode and the second electrode are plug contact pieces.
A dynamic electrode arc-extinguishing device is provided, wherein a first electrode and a second electrode are in a relative static structure.
The dynamic electrode arc extinguisher is one serial capacitor-resistor circuit, one voltage limiting device or one semiconductor arc extinguishing circuit.
A dynamic electrode arc-extinguishing device is composed of a semiconductor arc-extinguishing circuit with two ends, a capacitor, and a semiconductor device connected serially with said capacitor.
A dynamic electrode arc extinguishing device, the time interval between the separation of a first electrode relative to a third electrode and the separation of a second electrode relative to the third electrode is larger than the conduction time of a semiconductor device.
A dynamic electrode arc-extinguishing device, the semiconductor device is a thyristor, the trigger pole of the thyristor is connected with the main electrode of the thyristor.
The dynamic electrode arc extinguishing device also comprises a first semiconductor device, and the trigger electrode of the thyristor is connected with the main electrode of the thyristor through the first semiconductor device.
A dynamic electrode arc-extinguishing device, the first semiconductor device turn-on voltage is greater than 5 volts.
A dynamic electrode arc-extinguishing device, the first semiconductor device is a voltage-stabilizing diode.
The dynamic electrode arc-extinguishing device also comprises a first diode, a second diode and a current-limiting element, wherein the thyristor is a unidirectional thyristor, a trigger electrode of the unidirectional thyristor is connected with the anode of the unidirectional thyristor through the first diode, the second diode and the current-limiting element form a first series circuit, the first series circuit is connected with the unidirectional thyristor in parallel, and the first series circuit is used for discharging a capacitor.
The dynamic electrode arc extinguishing device further comprises a first semiconductor device, wherein the first semiconductor device is connected with a first diode in series, and the starting voltage of the first semiconductor device is larger than 5 volts.
A dynamic electrode arc-extinguishing device, the first semiconductor device is a voltage-stabilizing diode.
The working principle is as follows: the first electrode, the third electrode and a load to be controlled form a series circuit, two ends of the series circuit are connected with a working power supply, and when the first electrode, the second electrode and the third electrode are simultaneously connected, the load current passes through the first electrode and the third electrode;
at the moment that the first electrode is separated from the third electrode, the second electrode keeps a connection state with the third electrode, the electronic arc-extinguishing device is conducted (or in a low-resistance state), and current passes through the electronic arc-extinguishing device, the second electrode and the third electrode; the purpose of arc extinction when the first electrode is separated relative to the third electrode is achieved, then the electronic arc extinction device is cut off (or in a high-resistance state), the second electrode is separated from the third electrode, and the current passing through the second electrode and the third electrode when the second electrode is separated from the third electrode is smaller than the current passing through the first electrode and the third electrode (or the current is equal to zero).
The dynamic electrode arc-extinguishing device provided by the invention solves the arc-extinguishing requirement of the dynamic electrode.
Drawings
Fig. 1 is a schematic diagram and a state diagram of a dynamic electrode arc extinguishing apparatus according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram and a second state diagram of a first embodiment of the dynamic electrode arc extinguishing apparatus of the present invention.
Fig. 3 is a schematic diagram and a third state diagram of a first embodiment of the dynamic electrode arc extinguishing apparatus of the present invention.
Fig. 4 is a schematic diagram of an improved circuit of an electronic arc extinguishing device according to a first embodiment of the dynamic electrode arc extinguishing device of the present invention.
Detailed Description
Fig. 1 shows a first embodiment of the dynamic electrode arc extinguishing apparatus of the present invention:
a dynamic electrode arc-extinguishing device comprises a first electrode P1, a second electrode P2, an electronic arc-extinguishing device (A); the first electrode P1 is connected with the second electrode P2 through an electronic arc extinguishing device (a); the first electrode P1 and the second electrode P2 are connected with the third electrode P3; the first electrode P1, the third electrode P3 and the load M to be controlled form a series loop; the electronic arc extinguishing device (a) is used for extinguishing the arc when the first electrode P1 is separated from the third electrode P3.
The relative states of the first electrode P1, the second electrode P2, and the third electrode P3 include:
the first electrode P1 and the second electrode P2 are connected to the third electrode P3 at the same time (fig. 1);
the first electrode P1 is separated from the third electrode P3 and the second electrode P2 maintains a connected state with the third electrode P3 (fig. 2);
the second electrode P2 is separated from the third electrode P3 (fig. 3).
The third electrode P3 is connected to the first electrode P1 and the second electrode P2 in a sliding or rolling manner.
Electronic arc extinguishing device (a): namely a semiconductor arc extinguishing circuit (A) (a capacitor-resistor series circuit or a voltage limiting device can be adopted).
The semiconductor arc extinguishing circuit (a) shown in fig. 1, 2 and 3 is a two-terminal circuit, and includes a capacitor C1, a semiconductor device TR1 (which is a thyristor), a first semiconductor device Z1 (which is a zener diode), the semiconductor device TR1 is connected in series with the capacitor C1, a trigger electrode of the semiconductor device TR1 is connected to a main electrode (second anode) of the semiconductor device TR1 through the first semiconductor device Z1, and a time interval during which the first electrode P1 is separated from the third electrode P3 and the second electrode P2 is separated from the third electrode P3 is greater than an on time of the semiconductor device TR 1.
Fig. 4 shows a modified semiconductor quenching circuit (a): namely, the semiconductor arc extinguishing circuit (a capacitor resistor series circuit or a voltage limiting device can be adopted), the two-terminal circuit comprises a capacitor C1, a semiconductor device SCR1 (which is a unidirectional thyristor), a first semiconductor device Z1, a first diode D1, a second diode D2 and a current limiting element R1, the semiconductor device SCR1 is connected in series with the capacitor C1, a trigger electrode of the semiconductor device SCR1 is connected with an anode of the semiconductor device SCR1 through a first diode D1 and a first semiconductor device Z1 (which is a voltage stabilizing diode), a time interval of separation of the first electrode P1 from a third electrode P3 and separation of the second electrode P2 from the third electrode P3 are greater than a conduction time of the semiconductor device TR1, the second diode D2 and the current limiting element R1 form a first series circuit, the first series circuit is connected in parallel with the semiconductor device SCR1, and the first series circuit is used for discharging the capacitor C1.
The working principle is as follows:
as shown in fig. 1, 2 and 3, when the first electrode P1, the third electrode P3 and the load M to be controlled form a series circuit and both ends are connected with the working power supply, and the first electrode P1 and the second electrode P2 are connected with the third electrode P3 at the same time, the current of the load M passes through the first electrode P1 and the third electrode P3;
at the moment the first electrode P1 is separated from the third electrode P3, the second electrode P2 is kept connected with the third electrode P3, when the potential difference between the first electrode P1 and the third electrode P3 is greater than the turn-on voltage of the first semiconductor device Z1 (more than 5 volts is recommended), the semiconductor device TR1 is triggered to be turned on rapidly, and current charges the capacitor C1 through the semiconductor device TR1, the second electrode P2 and the third electrode P3; the capacitor C1 is charged quickly, so as to achieve the purpose of arc extinction when the electronic arc extinguishing device (a) separates the first electrode P1 from the third electrode P3, then the second electrode P2 separates from the third electrode P3, and when the first electrode P1, the second electrode P2 and the third electrode P3 are connected at the same time next time, the capacitor C1 discharges quickly through the semiconductor device TR1, the first electrode P1, the third electrode P3 and the second electrode P2, and prepares for the next arc extinction process.
When the electronic arc extinguishing device (a) employs the circuit of fig. 4:
at the moment the first electrode P1 is separated from the third electrode P3, the second electrode P2 is kept connected with the third electrode P3, when the potential difference between the first electrode P1 and the third electrode P3 is greater than the turn-on voltage of the first semiconductor device Z1 (preferably greater than 5 volts), the semiconductor device SCR1 is triggered to conduct rapidly, and current charges the capacitor C1 through the semiconductor device SCR1, the second electrode P2 and the third electrode P3; the capacitor C1 is charged fully soon, so as to achieve the purpose of arc extinction when the electronic arc extinguishing device (a) separates the first electrode P1 from the third electrode P3, then the second electrode P2 is separated from the third electrode P3, when the first electrode P1, the second electrode P2 and the third electrode P3 are connected at the same time next time, the capacitor C1 discharges quickly through the second diode D2, the current limiting element R1, the first electrode P1, the third electrode P3 and the second electrode P2 to prepare for the next arc extinction process, and fig. 4 has the advantage that the discharge of the capacitor C1 can be limited through the current limiting element R1, so that the discharge impact is reduced, and the arc extinction effect is not affected.
The above examples:
when the dynamic arc-extinguishing device is applied to an electric motor, a voltage regulator and the like, the first electrode P1 and the second electrode P2 are electric brushes, the first electrode P1 and the second electrode P2 are of relatively static structures and can be installed in parallel, and when the dynamic arc-extinguishing device is applied to the electric motor, the third electrode P3 is a rotor electrode of the electric motor, and two sets of dynamic arc-extinguishing devices are adopted for assembling.
When the arc extinguishing device is applied to arc extinguishing of a socket connector and the like, the first electrode P1 and the second electrode P2 are socket contact pieces which are used for arc extinguishing of the socket; or the first electrode P1 and the second electrode P2 are plug contact pieces which are used for arc extinction of the plug.
The starting voltage of a first semiconductor device Z1 of the electronic arc-extinguishing device (A) is more than 5V, so that the instantaneous arc-extinguishing current passing through a capacitor C1 can be greatly improved, the capacity requirement of the capacitor C1 is greatly reduced, because a charging loop of the capacitor C1 is connected with a load in series, when the capacity of the capacitor C1 is large, the charging time constant is increased, when the second electrode P2 is separated from the third electrode P3, the electric arc is generated due to large current, the response speed is low, the arc-extinguishing power consumption is large, and particularly in the electrode arc extinguishing of a motor, the problem needs to be considered.
When the electronic arc-extinguishing device (A) is a semiconductor arc-extinguishing circuit, other semiconductor arc-extinguishing circuits can be adopted for realization, and the invention is not limited to the specific circuit shown in the drawing.
The above embodiment has the following advantages:
1. the first electrode P1 and the second electrode P2 are in a relative static structure, so that the electronic arc extinguishing device is conveniently connected;
2. the electronic arc-extinguishing device adopts a mode that a semiconductor device is connected with a capacitor in series, so that the circuit is simple and the cost is low;
3. the arc extinguishing current is large, the requirement on capacitance capacity is low, the response speed is high, the arc extinguishing power consumption is low, and the cost is low.
Claims (15)
1. The utility model provides a dynamic electrode arc control device which characterized by:
the arc extinguishing device comprises a first electrode, a second electrode and an electronic arc extinguishing device;
the first electrode is connected with the second electrode through the electronic arc-extinguishing device;
the first electrode and the second electrode are connected with a third electrode;
the first electrode, the third electrode and a load to be controlled form a series loop;
the electronic arc extinguishing device is used for arc extinguishing when the first electrode is separated relative to the third electrode, the electronic arc extinguishing device is a semiconductor arc extinguishing circuit, the semiconductor arc extinguishing circuit is a two-end circuit and comprises a capacitor and a semiconductor device, a main loop of the semiconductor device is connected with the capacitor in series, the semiconductor device is a thyristor, and a trigger electrode of the thyristor is connected with a main electrode of the thyristor.
2. The dynamic electrode arc extinguishing apparatus according to claim 1, wherein:
the relative state of the first electrode, the second electrode, and the third electrode includes:
the first electrode and the second electrode are simultaneously connected with the third electrode;
the first electrode is separated from the third electrode and the second electrode is kept connected with the third electrode;
the second electrode is separated from the third electrode.
3. The dynamic electrode arc extinguishing apparatus according to claim 1, wherein: the third electrode is connected with the first electrode and the second electrode in a sliding or rolling mode.
4. The dynamic electrode quenching device of claim 3, wherein: the first electrode and the second electrode are brushes.
5. The dynamic electrode quenching device of claim 3, wherein: the third electrode is a motor rotor electrode.
6. The dynamic electrode quenching device of claim 3, wherein: the first electrode and the second electrode are socket contact pieces.
7. The dynamic electrode quenching device of claim 3, wherein: the first electrode and the second electrode are plug contacts.
8. The dynamic electrode arc extinguishing apparatus according to claim 1, wherein: the first electrode and the second electrode are of relative static structures.
9. The dynamic electrode arc extinguishing apparatus according to claim 1, wherein: the first electrode is separated from the third electrode by a time interval greater than an on time of the semiconductor device.
10. The dynamic electrode arc extinguishing apparatus according to claim 1, wherein: the thyristor further comprises a first semiconductor device, and the trigger electrode of the thyristor is connected with the main electrode of the thyristor through the first semiconductor device.
11. The dynamic electrode quenching device of claim 10, wherein: the first semiconductor device turn-on voltage is greater than 5 volts.
12. The dynamic electrode quenching device of claim 11, wherein: the first semiconductor device is a zener diode.
13. The dynamic electrode arc extinguishing apparatus according to claim 1, wherein: the capacitor is characterized by further comprising a first diode, a second diode and a current limiting element, wherein the thyristor is a unidirectional thyristor, a trigger electrode of the unidirectional thyristor is connected with an anode of the unidirectional thyristor through the first diode, the second diode and the current limiting element form a first series circuit, the first series circuit is connected with the unidirectional thyristor in parallel, and the first series circuit is used for discharging the capacitor.
14. The dynamic electrode quenching device of claim 13, wherein: also included is a first semiconductor device in series with the first diode, the first semiconductor device turn-on voltage being greater than 5 volts.
15. The dynamic electrode quenching device of claim 14, wherein: the first semiconductor device is a zener diode.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/109659 WO2018086500A1 (en) | 2016-11-12 | 2017-11-07 | Device for dynamically extinguishing electric arc of electrode |
| EP18838450.7A EP3648133B1 (en) | 2017-07-24 | 2018-07-19 | Direct-current arc-extinguishing circuit and device |
| US16/633,135 US11373817B2 (en) | 2017-07-24 | 2018-07-19 | Direct current arc extinguishing circuit and apparatus |
| KR1020207004709A KR102570020B1 (en) | 2017-07-24 | 2018-07-19 | DC extinguishing circuit and device |
| AU2018308487A AU2018308487B2 (en) | 2017-07-24 | 2018-07-19 | Direct current arc extinguishing circuit and apparatus |
| JP2020502664A JP6901183B2 (en) | 2017-07-24 | 2018-07-19 | DC arc extinguishing circuit and equipment |
| PCT/CN2018/096226 WO2019019950A1 (en) | 2017-07-24 | 2018-07-19 | Direct-current arc-extinguishing circuit and device |
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016109958903 | 2016-11-12 | ||
| CN201610995890 | 2016-11-12 | ||
| CN2017106080431 | 2017-07-24 | ||
| CN201710608043 | 2017-07-24 | ||
| CN201710681425 | 2017-08-10 | ||
| CN2017106814257 | 2017-08-10 | ||
| CN2017108350952 | 2017-09-15 | ||
| CN201710835095 | 2017-09-15 |
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| Publication Number | Publication Date |
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| CN107863956A CN107863956A (en) | 2018-03-30 |
| CN107863956B true CN107863956B (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711070356.2A Active CN107863956B (en) | 2016-11-12 | 2017-11-03 | Dynamic electrode arc-extinguishing device |
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| Country | Link |
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| CN (1) | CN107863956B (en) |
| WO (1) | WO2018086500A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993403B (en) * | 2017-07-24 | 2023-07-25 | 广州市金矢电子有限公司 | DC arc extinguishing circuit and device |
| CN109449694B (en) * | 2018-11-14 | 2024-04-30 | 上海电科电器科技有限公司 | DC plug structure |
| WO2021129562A1 (en) * | 2019-12-23 | 2021-07-01 | 郭桥石 | Arc extinction switch and method for using same |
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| CN201207355Y (en) * | 2008-05-23 | 2009-03-11 | 浙江开拓汽车电器有限公司 | Interval relay and windshield wiper motor |
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| Publication number | Publication date |
|---|---|
| CN107863956A (en) | 2018-03-30 |
| WO2018086500A1 (en) | 2018-05-17 |
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