CN102856895A - Reverse current protection contactor - Google Patents
Reverse current protection contactor Download PDFInfo
- Publication number
- CN102856895A CN102856895A CN201210380603XA CN201210380603A CN102856895A CN 102856895 A CN102856895 A CN 102856895A CN 201210380603X A CN201210380603X A CN 201210380603XA CN 201210380603 A CN201210380603 A CN 201210380603A CN 102856895 A CN102856895 A CN 102856895A
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- contact
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- binding post
- contactor
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Abstract
The invention discloses a reverse current protection contactor consisting of a contactor JQ1, a magnetic latching relay J1, an electromagnetic relay J2 and two diodes D1 and D2, wherein the contactor JQ1 is composed of a coil D, a main contact C1, a contact d and a contact e; the magnetic latching relay J1 is composed of a coil A, a coil B and a contact a; and the electromagnetic relay J2 is composed of a coil C and a contact b. The reverse current protection contactor disclosed by the invention is novel in structure, high in reliability, low in failure rate, convenient in assembly and adjustment and wide in adaption range. The reverse current protection contactor can protect DC power supplies and loads from being burnt by reverse current, and the reverse current protection contactor is high in control precision, adjustable in control range and good in stability.
Description
Technical field
The present invention relates to the contactor class of electromechanical compo, particularly a kind of Reverse Current Protection contactor.
Background technology:
Existing contactor is comprised of contactor housing, solenoid, iron core, fixed contact, moving contact with terminals, and the magnet control moving contact makes moving contact with the fixed contact contact or separates, thereby controlled source is switched on or switched off.Such contactor can not be realized the Reverse Current Protection function of power supply and load.
The existing overcurrent protector identical with the Reverse Current Protection function generally adopts thermal relay as overload protection device, and the OR circuit that perhaps adopts current transformer, sample circuit and diode to form realizes overcurrent protection function.Adopt thermal relay as overload protection device, its shortcoming is: can realize the overcurrent turn-off function function, but can not realize unidirectional overcurrent turn-off function function; The OR circuit realization overcurrent protection function that adopts current transformer, sample circuit and diode to form, its shortcoming is: the current transformer alternating current of can only sampling, and the direct current of can not sampling, under the direct current condition, the disabler of this kind overcurrent protector.
Summary of the invention:
The invention provides a kind of Reverse Current Protection contactor, this Reverse Current Protection contactor can be realized the function of protecting DC power supply and load not to be burnt by anti-stream.
Formation of the present invention: a kind of Reverse Current Protection contactor, formed by a contactor JQ1, magnetic latching relay J1, an electromagnetic relay J2 and two diode D1, D2, it is characterized in that: coil D, main contacts C
1, contact d and contact e consist of contactor JQ1; Loop A, coil B and contact a consist of magnetic latching relay J1; Coil C and contact b consist of electromagnetic relay J2;
Binding post BAT links to each other with the end of coil B, and the other end of coil B links to each other with loop A, and the other end of loop A links to each other with contact b, the other end of contact b links to each other with the negative pole of diode D1, the positive pole of diode D1 meets binding post GEN, simultaneously, and the end that coil B links to each other with loop A and main contacts C
1An end link to each other main contacts C
1Another termination binding post GEN;
Binding post INT links to each other with the end of contact a, and the other end of contact a links to each other with the end of coil D, another termination post head N EG of coil D; Simultaneously, the termination binding post GMG that links to each other with coil D of contact a;
Binding post INT links to each other with the end of coil C, and the other end of coil C links to each other with the positive pole of diode D2, and the negative pole of diode D2 meets post head N EG; Simultaneously, the negative pole of diode D2 links to each other with the end of contact d, another termination binding post-S of contact d;
The two ends of contact e connect respectively binding post 1 and binding post 2;
Post D IV links to each other with the earthing of casing end of contactor JQ1.
Compared with the prior art, beneficial effect of the present invention is can protect DC power supply and load not to be burnt by anti-stream, and control precision to be high, control range is adjustable, good stability.
Novel structure of the present invention, high, the failure rate is low of reliability, assembling, easy to adjust, range of application is wider.
Description of drawings:
Accompanying drawing is circuit theory diagrams of the present invention.
Embodiment:
As shown in the figure, binding post BAT links to each other with the end of coil B, and the other end of coil B links to each other with loop A, and the other end of loop A links to each other with contact b, and the other end of contact b links to each other with the negative pole of diode D1, and the positive pole of diode D1 meets binding post GEN.Simultaneously, the end and the main contacts C that link to each other with loop A of coil B
1An end link to each other main contacts C
1Another termination binding post GEN.
Binding post INT links to each other with the end of contact a, and the other end of contact a links to each other with the end of coil D, another termination post head N EG of coil D.Simultaneously, the termination binding post GMG that links to each other with coil D of contact a.
Binding post INT links to each other with the end of coil C, and the other end of coil C links to each other with the positive pole of diode D2, and the negative pole of diode D2 meets post head N EG.Simultaneously, the negative pole of diode D2 links to each other with the end of contact d, another termination binding post-S of contact d.
The two ends of contact e connect respectively binding post 1 and binding post 2.
Post D IV links to each other with the earthing of casing end of contactor JQ1.
If contact a is off-state, binding post INT connects the positive pole of 28vd.c. power supply, and post head N EG connects the negative pole of power supply, and at this moment, the coil C of electromagnetic relay J2 gets electric, and its contact b is closed.When binding post GEN termination load end positive source, binding post BAT termination load end power cathode, at this moment, because that the loop A of magnetic latching relay J1 gets is electric, its contact a is closed also to be kept closed, and simultaneously, the coil D of contactor JQ1 gets electric, its main contacts C
1Closed, contact d disconnects, contact e is closed.Main contacts C
1Closure directly causes magnetic latching relay J1 short circuit, and the electric current that flows to binding post BAT from binding post GEN will direct main contacts C from closure
1By, when this electric current flows to because certain reason changes, namely electric current is when binding post BAT flows to binding post GEN and reach certain value, and coil B contact-actuating a disconnects, and contact a will remain open state, and at this moment, contactor JQ1 obtains coil D dead electricity, its main contacts C
1Disconnect, binding post BAT namely is cut off to the current path of binding post GEN, thereby realizes the function that protection power source and load are not burnt by anti-stream.
Claims (1)
1. a Reverse Current Protection contactor is comprised of a contactor JQ1, magnetic latching relay J1, an electromagnetic relay J2 and two diode D1, D2, it is characterized in that: coil D, main contacts C
1, contact d and contact e consist of contactor JQ1; Loop A, coil B and contact a consist of magnetic latching relay J1; Coil C and contact b consist of electromagnetic relay J2;
Binding post BAT links to each other with the end of coil B, and the other end of coil B links to each other with loop A, and the other end of loop A links to each other with contact b, the other end of contact b links to each other with the negative pole of diode D1, the positive pole of diode D1 meets binding post GEN, simultaneously, and the end that coil B links to each other with loop A and main contacts C
1An end link to each other main contacts C
1Another termination binding post GEN;
Binding post INT links to each other with the end of contact a, and the other end of contact a links to each other with the end of coil D, another termination post head N EG of coil D; Simultaneously, the termination binding post GMG that links to each other with coil D of contact a;
Binding post INT links to each other with the end of coil C, and the other end of coil C links to each other with the positive pole of diode D2, and the negative pole of diode D2 meets post head N EG; Simultaneously, the negative pole of diode D2 links to each other with the end of contact d, another termination binding post-S of contact d;
The two ends of contact e connect respectively binding post 1 and binding post 2;
Post D IV links to each other with the earthing of casing end of contactor JQ1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380603.XA CN102856895B (en) | 2012-10-10 | 2012-10-10 | Reverse current protection contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380603.XA CN102856895B (en) | 2012-10-10 | 2012-10-10 | Reverse current protection contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102856895A true CN102856895A (en) | 2013-01-02 |
| CN102856895B CN102856895B (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210380603.XA Active CN102856895B (en) | 2012-10-10 | 2012-10-10 | Reverse current protection contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102856895B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10336905A (en) * | 1997-06-02 | 1998-12-18 | Harness Sogo Gijutsu Kenkyusho:Kk | Battery reverse connection protecting equipment |
| CN101989753A (en) * | 2009-08-04 | 2011-03-23 | 北京动力源科技股份有限公司 | Connection control system for storage battery of communication power supply |
| CN102282736A (en) * | 2011-05-04 | 2011-12-14 | 华为技术有限公司 | Switch control circuit for power supply and power supplying circuit |
| CN102369644A (en) * | 2011-06-08 | 2012-03-07 | 华为技术有限公司 | Control circuit for preventing battery group from being reversely connected and power supply system for base station |
-
2012
- 2012-10-10 CN CN201210380603.XA patent/CN102856895B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10336905A (en) * | 1997-06-02 | 1998-12-18 | Harness Sogo Gijutsu Kenkyusho:Kk | Battery reverse connection protecting equipment |
| CN101989753A (en) * | 2009-08-04 | 2011-03-23 | 北京动力源科技股份有限公司 | Connection control system for storage battery of communication power supply |
| CN102282736A (en) * | 2011-05-04 | 2011-12-14 | 华为技术有限公司 | Switch control circuit for power supply and power supplying circuit |
| CN102369644A (en) * | 2011-06-08 | 2012-03-07 | 华为技术有限公司 | Control circuit for preventing battery group from being reversely connected and power supply system for base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102856895B (en) | 2014-09-24 |
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