CN208938906U - A kind of exciting circuit control protector - Google Patents
A kind of exciting circuit control protector Download PDFInfo
- Publication number
- CN208938906U CN208938906U CN201821447433.1U CN201821447433U CN208938906U CN 208938906 U CN208938906 U CN 208938906U CN 201821447433 U CN201821447433 U CN 201821447433U CN 208938906 U CN208938906 U CN 208938906U
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- Prior art keywords
- fuse
- electric conductor
- excitation
- contactor
- current
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- 230000001012 protector Effects 0.000 title claims abstract description 12
- 230000005284 excitation Effects 0.000 claims abstract description 55
- 239000004020 conductor Substances 0.000 claims abstract description 37
- 238000010276 construction Methods 0.000 claims abstract description 13
- 230000001960 triggered effect Effects 0.000 claims description 2
- 206010037660 Pyrexia Diseases 0.000 abstract 1
- 239000012943 hotmelt Substances 0.000 description 13
- 230000003068 static effect Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009194 climbing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Abstract
A kind of exciting circuit control protector; including contactor construction; it is characterized in that the input terminal in the contactor construction is connected with excitation device for fusing; the excitation device for fusing includes the electric conductor connecting with the contactor construction input terminal; cavity is offered respectively on the shell of the electric conductor upper and lower, is provided with the excitation voltage input that the electric conductor can be cut off above the electric conductor in cavity；The excitation voltage input and the contactor construction send trigger signal by external control circuit respectively.The advantage of the invention is that small in size, fever is low, duplicate protection is provided for main circuit, and security performance is high, cuts off fast response time.
Description
Technical field
The utility model belongs to circuit control and protection field, and being a kind of includes excited target and utilize storage physically or chemically
The protector of circuit, and the integrated scheme of integrated contactor can be cut off, can apply to electric power and electric car industry.
Background technique
Traditional circuit, as fault-current protection device, uses contactor as circuit switch usually using hot melt fuse
Control device.Since hot melt fuse is when electric current is more than specified value, when encountering short circuit current, hot melt fuse is as event
Barrier current protection unit voluntarily fuses, to protect circuit.
And traditional contactors are reached according to the variation of energizing quantity in control circuit (electromagnetic force of electromagnet or other physical energies)
When to prescribed requirement, scheduled variation occurs for the controlled volume (contact) in electric circuit, to be switched on or switched off circuit.When connecing
When the control terminal input and control terminal output of tentaculum receive signal, the movement of solenoid actuated movable contact and stationary contact point contact or de-
From contact, to make the main circuit input terminal of contactor be switched on or switched off with main circuit output end, to realize control main circuit
On-off.
When fuse and contactor are used alone, there is also insufficient once:
1, element oneself power consumption is high.Since short circuit current choke coil is utilized as salvo, the area in hot melt fuse
The current density in domain is high, and local electrical resistance is also high, disjunction high voltage circuit and or larger fault current, need to connect multibreak
Mouth generates structure, and structure needs are separated by a distance, prevent fracture from ganging up and fracture is caused to reduce) cause largely to generate heat, it causes
Additional energy consumption.The temperature rise of product is also more difficult to control, causes certain difficulty to vehicle and the design of electric system.
2, small product size is big.Under high current and big voltage condition, contactor volume needs to increase, and heats fuse
The gap of fuse element and volume must also increase, and the arc-extinguishing medium and protection shell sizes of surrounding are huger, so as to cause
Hot melt fuse volume, weight dramatically increase, and installation space is huger.It will be wasted on vehicle many interior effectively empty
Between, influence the arrangement of other related components.And causing installation section structural strength that must enhance on electric power, construction is difficult
Degree and cost all dramatically increase.
3, hot melt fuse can not meet simultaneously big rated current be powered for a long time and the quick disjunction of glitch electric current this
Two kinds of demands.It is to utilize current heating due to heating disconnected fuse, needs to be resistant to current heating under rated current, and in failure
Generate heat rapid melting under electric current, thus this protection device for passing through current heating by conductor be can not be with larger specified
Electric current and the stronger short-time overload of tolerance or dash current (such as larger current when electric car starting, quick acceleration or climbing)
While, and meet quick disjunction demand under certain small magnitude fault current.That is the big hot melt fuse of rated current can not expire
The quick disjunction of sufficient glitch electric current, and the hot melt fuse for meeting quick disjunction can not be by prolonged big rated current.
This contradiction leads to the transient high-current for heating the indistinguishable following high performance vehicle of fuse, and (quick start, quickly adds climbing
Electric current when fast) and glitch electric current, thus it is unable to satisfy following demand.
4, it in the case of high current, heats fuse and contactor matching is difficult.Contactor can be within the scope of its protection feature
Control circuit on-off as needed, but once fuse is heated selected, operating chacteristics is completely fixed, can not be according to reality
The range and fusing speed of flexible modulation blowout current are needed, therefore heat fuse and contactor usually requires matching, leads to
Often by contactor disjunction glitch electric current, and by hot melt fuse disjunction major break down electric current.And under conditions of high current, this
With more difficult, often there is the excessively high situation of fuse and contactor cost after can not matching or matching, cause to be difficult to effectively
Mating protection circuit.
5, high current hot melt fuse and contactor be not usually respectively independent, and client installs and uses inconvenience, needs biggish
Installation space, and it is difficult to centralized control and protection.
In conclusion tradition uses hot melt fuse as short circuit protection device and uses contactor as electric controller
Part has many limitations and difficulty in face of the case where high current and big voltage, it is also difficult to meet the intelligent development to face the future.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of excitation control protector, integrate excitation fuse and
Contactor function, using contactor as the switch of normal switch main circuit, pressure is cut when using excitation disconnecting device as failure
The protective device of disconnected main circuit.
In order to solve the above technical problems, technical solution provided by the utility model is a kind of exciting circuit control protector,
Including contactor construction, it is characterised in that be connected with excitation device for fusing, the excitation in the input terminal of the contactor construction
Device for fusing includes the electric conductor connecting with the contactor construction input terminal, on the shell of the electric conductor upper and lower respectively
Cavity is offered, is provided with the excitation voltage input that the electric conductor can be cut off above the electric conductor in cavity；The excitation
Voltage input and the contactor construction send trigger signal by external control circuit respectively.
The excitation cutting source is gas generator, is set in the cavity between the gas generator and the electric conductor
It is equipped with piston.
At least one prefabricated fracture is provided on the electric conductor below the excitation cutting source.
The prefabricated fracture is the groove for penetrating through the conductor width, and the groove shapes are U-shaped, V-type or its combination
Shape.
At least one arc extinguishing fuse is parallel at the both ends in the excitation cutting source.
Excitation of the invention controls protector, and under rated current or small overload current impact, contactor is being responsible for electric current just
It is normally opened disconnected.In the case where short circuit current or big overload rush of current, disconnecting device controlled starting, instantaneous trip current protection are motivated
Circuit safety.
With conventional fuse compared with the protection control circuit that contactor cooperates, the main optimization point of this programme includes following
5 points:
1. replacing traditional hot melt fuse with excitation fuse, in the case where high current, element heating can be significant
It reduces, it is more energy saving；
2. motivating fuse volume may be implemented smaller, client can be more relative to the hot melt fuse of big rated current
Add flexible layout designs protection circuit；
3. motivating fuse and contactor Integrated design, the system after integrating can reduce installation space, install number of components,
Increase integrated level, protected mode is more flexible adjustable；
4. the system incentive fuse and contactor after integrated carry out two-way parallel control and protection, electricity can be further strengthened
Road reliability, safety and intelligentized control protection；
5. fuse is motivated to compare thermal cut-off, fusing can be triggered, electric current-fusing time characteristic is adjustable, and can
To increase the triggering fuse protection such as temperature, collision as needed.
Detailed description of the invention
Fig. 1, this product working principle diagram.
Fig. 2, structural schematic diagram when this product excitation fuse does not work.
Fig. 3, this product motivate result schematic diagram when fuse cutting.
Specific embodiment
Scheme in view of the above technology is now specifically described.
It is illustrated first against working principle.Invention increases the contactor schematic diagrams of incentive program: referring to Fig. 1,
It is connect in the main circuit input terminal 301 of contactor with main circuit, the main circuit output end 302 and excitation fuse 311 of contactor
Connection, motivates the output end 309 of fuse to connect with main circuit；The control circuit input terminal 303 and output end 304 of contactor be
Electromagnet provides electric signal, is moved by solenoid actuated moving contact, and control solenoid actuated moving contact is connect with main circuit
Input terminal 301 and output end 302 contact or be detached from, realize the switch of main circuit.Pass through control signal 307 and output end
Excitation voltage input 310 between 308 sends cutting electric signal, and triggering excitation fuse disconnects, and realizes circuit protection.Electric current compared with
Greatly, when circuit disconnects, then electric arc is eliminated in excitation fuse both ends parallel connection at least arc extinguishing arc extinguishing fuse 312.
Excitation fuse and contactor become one, and reduce its occupied space.Then it is fused by two-way to excitation
Device and contactor part are respectively controlled, working principle:
In the case of normal circuit is connected, main circuit current connects contactor input terminal 301, through contactor movable contact 306, access
Contactor and excitation fuse connecting pin 302, then electric current is after flowing through excitation fuse 311, from excitation fuse output end
309 outputs.At this point, the on-off of circuit is controlled by contactor completely.(this process electric current can also be accessed reversely).
And when encountering fault current, pumping signal passes through excitation fuse control signal 307 and excitation fuse control
Output end 308, excitation excitation fuse driving source 310, cutting excitation fuse 311, so that main circuit be made to cut off.If at this time
It needs to assist eliminating electric arc, then electric arc is eliminated by the auxiliary of integrated arc extinguishing fuse 312 of apolegamy.Motivate fuse and contactor
Become one, but its control circuit is independent control circuit, control contactor movement and excitation fuse movement respectively,
Improve main circuit safeguard protection performance.
The utility model is working normally state: under rated current or under small multiple dash current, system control contactor is just
Normally opened pass operation, realizes connecting and disconnecting of the circuit.In protection operating conditions: under high current short-circuit conditions, system control excitation fuse work,
Force disconnect circuit.Future secure is protected, and after circuitry cuts, before repairing renewal part, system can not restore electricity again.
Now scheme, working principle lift preferred embodiment and structure are specifically described in conjunction with diagram in view of the above technology,
Referring to Fig. 2.The lower part in inner housing is arranged in electromagnet, and chamber is offered in electromagnet, is provided with dynamic iron in the chamber
The heart is provided with the support rod of support moving contact above dynamic iron core, moves and is connected between iron core and support rod by connecting spring, branch
Strut lower end bar portion and dynamic iron core are located in the chamber of electromagnet.Under electromagnet magneticaction, it is upward along chamber to move iron core
Displacement, while under the action of the thrust and spring force of dynamic iron core, support rod is shifted up along chamber.It is located at electricity in support rod
It is provided with buffer spring on body of rod periphery above magnet, is fixedly connected with moving contact 201, moving contact position in buffer spring upper end
In support club shaft periphery two sides, support club shaft is provided with compressed part in the upper end of moving contact.Buffer spring can delay
Pressure when impulsion contact and static contact contact, avoids in contact process, and moving contact and static contact are squeezed damage.It surrounds
Moving contact in support club shaft two sides is connected by support club shaft and compressing member, and material is conductive material.It is being located at
On inner housing above moving contact, the moving contact of corresponding support club shaft two sides is respectively arranged with static contact input terminal 202 and quiet
Contact output end 203.Static contact is interval setting, in the top of support club shaft, i.e., is set on the inner housing between each static contact
It is equipped with cavity.Moving contact shifts up accessible static contact input terminal 202 and output end 203, connection or disconnecting circuit.
Static contact input terminal side is provided with excitation disconnecting device.It is in the present embodiment excitation fuse.Excitation is molten
Disconnected device includes shell, and electric conductor 204 is arranged through shell, and one end is connect with static contact input terminal 202, the other end and main circuit
Connection.Electric conductor shape can be shape, tabular or the other shapes that groove both ends have extension edge.In the present embodiment,
The shape of extension edge is had using groove both ends, which can reduce space hold.
The top of electric conductor 204 is provided with cavity, the excitation voltage input of cutting electric conductor 202 is provided in cavity
205, in the present embodiment, excitation voltage input 205 is gas generator, and driving force can be provided by control by being also possible to other
Device.The cavity fallen after disconnecting for electric conductor is provided in the shell of the lower section of the electric conductor where gas generator.?
Piston 206 is additionally provided in cavity between electric conductor and gas generator.Cavity is closed between piston and gas generator
Cavity.In order to which electric conductor is easy to disconnect, prefabricated fracture 207 is provided on the electric conductor being located at below gas generator.It is prefabricated
Fracture can be electric conductor above and below, penetrate through conductor width at least one of groove, the groove can be V, U or
It combines shape, can also be other and receives the shape that impact easily disconnects.When gas generator discharges high pressure gas, work can be driven
Plug cutting electric conductor, disconnects main circuit.The control circuit of excitation fuse and contactor is shared, control circuit control contact
Device is cut-off, while also being controlled in current/voltage overload, exports electric signal to control driving source, drive control driving source is cut
Disconnected electric conductor forces disconnection main circuit to be protected.
When electric arc is larger when electric current is larger, disconnects main circuit, the arc extinguishing of arc extinguishing is parallel at excitation fuse both ends
Fuse.The fuse that goes out generallys use fusing type fuse, is used for arc extinguishing filled with arc-extinguishing medium in its shell.
The working principle of the invention: in normal operation, according to receive control signal control contactor closure or
It disconnects to be connected to main circuit or disconnect main circuit.In normal work, control circuit will not send triggering letter to excitation fuse
Number, excitation fuse does not work, and only exists as conductor, flows through electric current normally.
When system discovery large inrush current or short circuit current, system enters protection operating conditions.Referring to Fig. 3, when system is sentenced
When determining overload current more than safety value, system can send activation signal, control excitation to control driving source (physically or chemically can)
Source discharge at once internal reservoir physically or chemically can, and push piston impact electric conductor and cut off the prefabricated disconnected of electric conductor rapidly
At mouthful, and cutting flows through the electric current of electric conductor from there.The arc extinguishing fuse in parallel with excitation fuse assists to eliminate electricity simultaneously
Arc guarantees main circuit system safety.
Integrated excitation fuse and contactor it is integrated can flexibly, it is reliable, effective realize current control and protection,
Under rated current or small dash current, electric current is effectively controlled using contactor and is cut-off；It is rushed in short-circuit current or high current
It hits down, electric current is cut off using excitation fuse in 2~5ms, to guarantee the safety of vehicle or electric system.
The utility model is producible to be had the beneficial effect that:
1, system internal resistance is reduced, so that additional heating power consumption is reduced, it is more energy saving.
2, in the case of high current, fuse volume is motivated to may be implemented smaller, client can be with more flexible layout designs
Protect circuit.
3, installation space can be reduced by motivating fuse and contactor to integrate, and installed number of components, increased integrated level, convenient for visitor
Family uses, and improves functional reliability.
4, the system after integrating can carry out two-way parallel control and protection to excitation fuse and contactor, can be further
Accentuator reliability, safety and intelligence.
5, excitation fuse compares thermal cut-off, can trigger fusing, electric current-fusing time characteristic is adjustable, and can
To increase temperature, vehicle condition, collision and the triggering fuse protection such as antitheft as needed.Also it can be adjusted according to the needs as integrated system
It controls in system or is controlled by outside, realize the intelligentized control method protection of circuit safety, adjust protection scope as needed, adapt to not
Same application, increases the adaptability of protection.
Claims (5)
1. a kind of exciting circuit controls protector, including contactor construction, it is characterised in that in the input of the contactor construction
End is connected with excitation device for fusing, and the excitation device for fusing includes the electric conductor connecting with the contactor construction input terminal,
Cavity is offered respectively on the shell of the electric conductor upper and lower, is provided with cut-off institute in cavity above the electric conductor
State the excitation voltage input of electric conductor；The excitation voltage input and the contactor construction are sent by external control circuit respectively to be triggered
Signal.
2. exciting circuit according to claim 1 controls protector, it is characterised in that the excitation voltage input is gas hair
Device is given birth to, is provided with piston in the cavity between the gas generator and the electric conductor.
3. exciting circuit according to claim 1 controls protector, it is characterised in that be located at below the excitation voltage input
The electric conductor on be provided at least one prefabricated fracture.
4. exciting circuit according to claim 3 controls protector, it is characterised in that the prefabricated fracture is described in perforation
The groove of conductor width, the groove shapes are U-shaped, V-type or it combines shape.
5. exciting circuit according to claim 1 controls protector, it is characterised in that at the both ends of the excitation voltage input
It is parallel at least one arc extinguishing fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821447433.1U CN208938906U (en) | 2018-09-05 | 2018-09-05 | A kind of exciting circuit control protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821447433.1U CN208938906U (en) | 2018-09-05 | 2018-09-05 | A kind of exciting circuit control protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208938906U true CN208938906U (en) | 2019-06-04 |
Family
ID=66719913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821447433.1U Active CN208938906U (en) | 2018-09-05 | 2018-09-05 | A kind of exciting circuit control protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208938906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205984A (en) * | 2020-12-11 | 2021-08-03 | 西安中熔电气股份有限公司 | Excitation fuse capable of sequentially disconnecting conductor and fuse body |
-
2018
- 2018-09-05 CN CN201821447433.1U patent/CN208938906U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205984A (en) * | 2020-12-11 | 2021-08-03 | 西安中熔电气股份有限公司 | Excitation fuse capable of sequentially disconnecting conductor and fuse body |
| CN113205984B (en) * | 2020-12-11 | 2024-03-08 | 西安中熔电气股份有限公司 | Excitation fuse for sequentially disconnecting conductor and melt |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 710075 Zhongrong Electric Industrial Base, No. 97, Jinye Second Road, High tech Zone, Xi'an, Shaanxi Patentee after: XI'AN ZHONGRONG ELECTRIC Co.,Ltd. Address before: Room 3-10303, East District, modern enterprise center, No.12, zone a, pioneer R & D Park, 69 Jinye Road, high tech Zone, Xi'an City, Shaanxi Province, 710077 Patentee before: XI'AN ZHONGRONG ELECTRIC Co.,Ltd. |