CN108335947A - Anti- capacitive load heavy current impact type DC relay - Google Patents
Anti- capacitive load heavy current impact type DC relay Download PDFInfo
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- CN108335947A CN108335947A CN201810239006.2A CN201810239006A CN108335947A CN 108335947 A CN108335947 A CN 108335947A CN 201810239006 A CN201810239006 A CN 201810239006A CN 108335947 A CN108335947 A CN 108335947A
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- relay
- electrically connected
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- resistance
- power supply
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/021—Bases; Casings; Covers structurally combining a relay and an electronic component, e.g. varistor, RC circuit
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Protection Circuit Devices (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a kind of anti-capacitive load heavy current impact type DC relays, it include the main relay with main contacts and contact pull-in winding, it further include preliminary filling control assembly, the preliminary filling control assembly includes intelligent control module, switching power devices and current limiting device, the switching power devices include the second relay, first power switch tube and isolation drive module, second relay coil is electrically connected with intelligent control module, first power switch tube is electrically connected by isolation drive module with intelligent control module, switching power devices are in parallel together with the main contacts both ends of main relay after connecting with current limiting device and are electrically connected.It is simple in structure, main body relay can be made close to break-make at Current Voltage zero crossing, capacitive load instantaneous large-current is effectively avoided to impact, DC relay is improved and use reliability and service life, reduction causes damages to circuit, improves circuit entirety safety and reliability.
Description
Technical field
The present invention relates to a kind of relays, more particularly, to a kind of high voltage direct current relay of use on power battery.
Background technology
Power battery is the main energy supply system of pure electric vehicle, generally constitutes high-tension battery using unitary combination mode
Group（Or it is HV power batteries）Power drive is provided for electric vehicle.Usually match between the battery system and inverter of electric vehicle
Set D.C. contactor, buffer action from being used for when system is out of service after, when system operation from connection function, when vehicle closing or
When breaking down, safe energy-storage system can be detached from vehicle electrical systems, play the role of disjunction circuit.
It is very big to power circuit interference however since the power device of high-pressure frequency-conversion driving is operated in variable frequency switch state,
In order to stabilize voltage fluctuation and firm power output, the very capacitance matrix of large capacity, this high pressure in parallel is big in controller
The capacitance matrix of capacity is easy for bringing great harm to the closure moment of DC relay.
And new-energy automobile high voltage direct current relay will not only have the higher voltage of tolerance and carry enough electric currents
Basic function also wants that the impact for being closed momentary capacitance load generation huge current flow can be resisted, and this dash current is typically negative
Several times to tens times of rated current etc. is carried, can not all bear the impact of this instantaneous electric current using conventional relay, and this
The harm that kind dash current is brought is exactly easily to lead to the viscous connection of relay contact, and relay contact separation failure eventually leads to electricity
Source cut-out is out of control, very harmful.Such as existing capacitive load typical circuit（See Fig. 5）, if supply voltage is 100V, usual capacitive
Load C equivalent resistance is 0.1 Ω, then relay is closed the dash current of moment and can reach A=100V/0.1 Ω=1000A, electric current
Too big, instantaneous large-current impact, the service life of relay substantially reduces.
Although it is all to install external auxiliary capacitance additional and give to fill relay also to have in the automobile-used main power source control relay of New energy electric
Device+give the mode of charging resistance to take precautions against the heavy current impact that main relay resists closure moment, however use circuit complicated, volume
Greatly, it while being also required for special control program control auxiliary and gives the switching sequence for filling relay and main relay（Such as vehicle
Controller VCU）, cost is increased, application and maintenance are also not convenient.
Invention content
The present invention is to solve existing new-energy automobile high voltage direct current relay to be impacted by moment huge current flow in the presence of easy
And leading to the viscous connection in contact, relay contact separation is failed, and dump equal harm out of control is eventually led to, and to the conventional institute of this harm
For the strick precaution circuit of use there is also circuit complexity, overall volume is big, and control is complicated, and overall cost is high, and application and maintenance are inconvenient
Etc. present situations and provide one kind it is simple in structure, main body relay can be made effectively to be avoided close to break-make at Current Voltage zero crossing
Capacitive load instantaneous large-current impacts, and improves DC relay and reliability and service life, reduction is used to cause circuit
Harm improves the anti-capacitive load heavy current impact type DC relay of circuit entirety safety and reliability.
Used specific technical solution is the present invention to solve above-mentioned technical problem：A kind of anti-capacitive load high current punching
Type DC relay is hit, includes the main relay with main contacts and contact pull-in winding, it is characterised in that：It further include preliminary filling control
Component processed, the preliminary filling control assembly include intelligent control module, switching power devices and current limiting device, and the power is opened
It closes component and includes the second relay, the first power switch tube and isolation drive module, the second relay coil and intelligent control mould
Block is electrically connected, and the first power switch tube is electrically connected by isolation drive module with intelligent control module, switching power devices
It is in parallel and is electrically connected with the main contacts both ends of main relay together after connecting with current limiting device；Relay is in use, intelligent control
Module control the second relay coil first it is electric to the second relay normally open contact be closed after, intelligent control module driving the first work(
The conducting of rate switching tube charges to capacitor, and it is equal or suitable with supply voltage to charge to capacitor voltage at both ends, and main relay is tactile
When voltage is reduced to zero or is close to zero between point, intelligent control module controls main relay contacts closure again, turns off the first power
The second relay is disconnected after switching tube again.It is simple in structure, main body relay can be made close to break-make at Current Voltage zero crossing, had
Effect avoids capacitive load instantaneous large-current from impacting, and improves DC relay and uses reliability and service life, reduces to electricity
Road causes damages, and improves circuit entirety safety and reliability.
Preferably, second relay is adopted as small solid relay.Volume is reduced, load effect is reduced
Property, miniature relay is non-loaded closure and cut-out in the entire closing course of high voltage direct current relay, is not subject between contact
High pressure and rush of current, only mechanical blockage effect.
Preferably, the intelligent control module uses sequential control circuit module, control when main relay is connected
Electric sequential is followed successively by the second relay, the first power switch tube and main relay sequence work once electrified, main relay contacts and closes
Control sequential after conjunction is followed successively by the first power switch tube and the second relay sequence powers off.Intelligent control module is improved to each portion
The sequential divided obtains electric and power-off and controls, and reduces the influence of rush of current damaging.
Preferably, the intelligent control module includes main relay coil delay power timer, preliminary filling power device
The first power switch Delayed conducting timer in part, the first power switch time delayed turn-off timer in preliminary filling power device and
The second relay coil delay cut-off timer in preliminary filling power device.The sequential for improving each timer obtains electric and power-off control
System, reducing rush of current damaging influences.
Preferably, the main relay coil delay power timer, the first power switch Delayed conducting timer,
Four back off timers of the first power switch time delayed turn-off timer and the second relay coil delay cut-off timer use
The four comparator integrated chips with four road comparator chips are constituted, and correspond to timer all the way per road comparator.Improve control
Simple and effective property improves and connects up simple easiness.
Preferably, the main relay coil delay power timer includes eleventh resistor, the 4th capacitance, the 4th electricity
Resistance, first comparator and the first field-effect tube, eleventh resistor one end are electrically connected with DC power supply+12V, and eleventh resistor is another
One end positive input terminal third pin compared with first comparator is electrically connected, and first comparator compares positive input terminal third pin string
It with DC power supply being electrically connected after joining the 4th capacitance, first comparator output end is electrically connected with the first fet gate,
Eleventh resistor is parallel with the 4th diode, and the 4th diode cathode is electrically connected with DC power supply+12V；First field-effect tube
It drains and is electrically connected with DC power supply+12V after connecting the tenth diode and the 7th resistance all the way, the first FET drain is another
Road is electrically connected with the ends main relay coil J-；Tenth diode anode is electrically connected with the first FET drain.Raising pair
The timing controlled validity of main relay coil delay power.
Preferably, the first power switch Delayed conducting timer in the preliminary filling power device includes third electricity
Resistance, the 19th diode, the 7th electric appliance, the second comparator, the 5th field-effect tube and optical coupling isolator, 3rd resistor one end with it is straight
Galvanic electricity source+12V is electrically connected, and the 3rd resistor other end the 5th pin of positive input terminal compared with the second comparator is electrically connected, together
When the 3rd resistor other end connect the 7th capacitance after with DC power supply be electrically connected, 3rd resistor is in series with the 19th pole
Pipe, the 19th diode cathode are electrically connected with DC power supply+12V；Second comparator output terminal is connected after the 18th diode
It is electrically connected with the 5th fet gate, the 18th diode anode is electrically connected with the 5th fet gate, the 5th
The drain electrode of effect pipe is electrically connected with optical coupling isolator input terminal, the 16th electricity of luminous tube anode series connection of optical coupling isolator input terminal
It is electrically connected with DC power supply+12V after resistance；Optical coupling isolator output end and the first power switch tube phase in preliminary filling power device
It is drivingly connected, series current li tauniter part in the first power switch tube.It improves and is delayed to the first power switch in preliminary filling power device
The timing controlled validity of conducting.
Preferably, the 14th resistance of the second relay coil delay cut-off timer, the 5th capacitance, the 5th electricity
Resistance, the 4th comparator and the second field-effect tube, the 14th resistance one end are electrically connected with DC power supply+12V, and the 14th resistance is another
One end negative input end compared with the 4th comparator is electrically connected, at the same the 14th resistance other end connect the 5th capacitance after with direct current
Power ground is electrically connected, and the 5th diode of the 14th resistor coupled in parallel, the 5th diode cathode the moon is mutually electrically connected with DC power supply+12V
It connects；4th comparator output terminal is electrically connected with the second fet gate, and the second FET drain connects the 11st all the way
It is electrically connected with DC power supply+12V after diode and the 8th resistance, the second FET drain another way and the second relay line
Circle end is electrically connected；11st diode anode is electrically connected with the second FET drain, the second relay contact end and master
Relay contact end is electrically connected.It improves to the second relay coil delay cut-off timing controlled validity.
Preferably, second relay uses two-way relay parallel-connection structure.Improve the conducting pair of the second relay
The effective reliability of capacitor charging, improve ensure main relay be closed when capacitor voltage at both ends fill with to supply voltage
Of substantially equal or comparable effect is reduced and is damaged caused by being closed dash current.
The beneficial effects of the invention are as follows：Internal preliminary filling component by device for power switching, current limiting device, intelligent control module,
Main contacts pull-in winding is formed with main contacts mechanism.Power switching device series current limiting device is in parallel with relay main contacts, outside
Portion controls the internal intelligent control module of signal access.Wherein device for power switching is made of miniature relay, the first power tube, limit
Stream device is 30 Ω power resistors.Start moment, intelligent control module pioneer when external control signal control main relay is closed
The second relay miniature relay in dynamic device for power switching is closed, then the first power switch tube is driven to be connected, load capacitance
By current limiting device power resistor low current charge；After hundreds of milliseconds, intelligent control module drives the actuation line of main relay again
Circle is closed main contacts；After several milliseconds in rupturing duty device the first power switch tube conducting, it is small-sized to turn off the second relay
The entire closing course of relay, high voltage direct current relay is completed.It is simple in structure, main body relay can be made close to Current Voltage
Break-make at zero crossing effectively avoids capacitive load instantaneous large-current from impacting, and improving DC relay using reliability and makes
With the service life, reduction causes damages to circuit, improves circuit entirety safety and reliability.It is controlled for new-energy automobile main power source
Relay key characteristic demand, we design and develop out the application technology of anti-capacitive load heavy current impact type DC relay,
And anti-capacitive load heavy current impact type DC relay series of products are manufactured.
Description of the drawings：
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the schematic block circuit diagram structural schematic diagram of the anti-capacitive load heavy current impact type DC relay of the present invention.
Fig. 2 is that the circuit of Fig. 1 connects structure schematic diagram.
Fig. 3 is the structural schematic diagram that Fig. 2 is electrically connected with DC power supply and capacitive load.
Fig. 4 is the circuit structure signal of intelligent control module in the anti-capacitive load heavy current impact type DC relay of invention
Figure.
Fig. 5 is the structural representation that high voltage direct current relay in the prior art is electrically connected with DC power supply and capacitive load
Figure.
Specific implementation mode
In Fig. 1, Fig. 2, Fig. 3, embodiment shown in Fig. 4, a kind of anti-capacitive load heavy current impact type DC relay, packet
The main relay S1 with main contacts 11 and contact pull-in winding 12 is included, further includes preliminary filling control assembly 20, the preliminary filling control
Component 20 processed includes intelligent control module 30, switching power devices 50 and current limiting device 40, the switching power devices 50 packet
Include 60 module of the second relay S2, the first power switch tube Q1 and isolation drive, the second relay coil and intelligent control module
It is electrically connected, the first power switch tube Q1 is electrically connected by 60 module of isolation drive with intelligent control module 30, power switch
Component 50 and current limiting device 40 connect after together 11 both ends of main contacts of main relay S1 be in parallel and be electrically connected；Relay uses
When, intelligent control module 30 control the second relay S2 coils first it is electric to the second relay S2 normally opened contacts be closed after, intelligently
Driving the first power switch tube Q1 conductings of control module 30 charge to capacitor C, charge to capacitor C both end voltages and power supply electricity
Press equal or suitable, voltage drop is several when voltage is reduced to zero or is close to zero between main relay contacts namely between main relay contacts
It is zero, intelligent control module 30 controls main relay S1 contact closures again, is disconnected again after turning off the first power switch tube Q1
Second relay S2.Isolation drive module 60 is constituted using optical coupling isolator U3 chips.Current limiting device 40 is the 15th resistance 15,
The resistance value of 15th resistance is+1 Ω of 30 Ω.Main contacts 11 includes P1 and P2 tip sides shown in Fig. 5 circuits.Load capacitance
By 30 Ω resistance R15 low current charges of current limiting device；After hundreds of milliseconds, intelligent control module 30 drives main relay S1's again
Pull-in winding is closed main contacts；The conducting that the first power device Q1 power tubes are cut off after several milliseconds, turns off the second relay S2
The entire closing course of miniature relay, high voltage direct current relay is completed.Second relay S2 is adopted as small solid relay.
Intelligent control module 30 use sequential control circuit module, connect main relay when control electric sequential is followed successively by the second relay
Device, the first power switch tube and main relay sequence work once electrified, the control sequential after main relay contacts are closed are followed successively by the
One power switch tube and the second relay sequence power off.Intelligent control module 30 includes the delay power timing of main relay coil
The first power switch in the first power switch Delayed conducting timer, preliminary filling power device in device, preliminary filling power device prolongs
When shutdown timer and preliminary filling power device in the second relay coil delay cut-off timer.The delay of main relay coil is logical
Electric timer, the first power switch Delayed conducting timer, the first power switch time delayed turn-off timer and the second relay line
Four back off timers for enclosing delay cut-off timer use the four comparator integrated chips with four road comparator chips to constitute,
Correspond to timer all the way per road comparator.Four road back off timers, circuit control are constituted using four road comparator integrated chips
Simpler, control cost is lower, and product cost is lower, more the market competitiveness, and maintenance is more prone to simple.Four comparator collection
It is respectively at four road comparators of chip：U15-a, U15-b, U15-c and U15-d（See Fig. 4）.Main relay coil delay power
Timer includes eleventh resistor R11, the 4th capacitance C4, the 4th resistance R4, first comparator U15-a and the first field-effect tube
Q3-a, the one end eleventh resistor R11 are electrically connected with DC power supply+12V, the eleventh resistor R11 other ends and first comparator
U15-a compares positive input terminal and is electrically connected (see Fig. 4 U15 thirds pin), and first comparator U15-a compares positive input terminal (see figure
4U15 thirds pin) series connection the 4th capacitance C4 after with DC power supply be electrically connected, first comparator U15-a output ends are (see figure
The first pins of 4U15) it is electrically connected with the first fet gate Q3-a, eleventh resistor R11 is parallel with the 4th diode D4,
4th diode D4 cathodes are electrically connected with DC power supply+12V；First field-effect tube Q3-a drain electrode is connected the tenth diode all the way
It is electrically connected with DC power supply+12V after D12 and the 7th resistance R7, the first field-effect tube Q3-a drain electrode another ways and main relay
The ends coil J- are electrically connected；Tenth diode D12 anodes are electrically connected with the first field-effect tube Q3-a drain electrodes.Preliminary filling power device
In the first power switch Delayed conducting timer include 3rd resistor R3, the 19th diode D19, the 7th capacitance C7, second
Comparator U15-b, the 5th field-effect tube Q5 and optical coupling isolator U3, the one end 3rd resistor R3 are mutually electrically connected with DC power supply+12V
It connects, 3rd resistor R3 other ends positive input terminal compared with the second comparator U15-b is electrically connected (see the 5th pins of Fig. 4 U15), together
When the 3rd resistor R3 other ends connect the 7th capacitance C7 after with DC power supply be electrically connected, 3rd resistor R3 is in series with the 19th
Diode D19, the 19th diode D19 cathodes are electrically connected with DC power supply+12V；Second comparator U15-b output ends are connected
It is electrically connected with the 5th field-effect tube Q5 grids after 18th diode D18, the 18th diode D18 anodes and the 5th field-effect
Pipe Q5 grids are electrically connected, and the 5th field-effect tube Q5 drain electrodes are electrically connected with optical coupling isolator U3 input terminals, optical coupling isolator U3
It is electrically connected with DC power supply+12V after the 16th resistance R16 of luminous tube anode series connection of input terminal；Optical coupling isolator U3 outputs
End is drivingly connected with the first power switch tube Q1 phases in preliminary filling power device, series current li tauniter on the first power switch tube Q1
Part, namely the 15th resistance R15 of series connection.The first power switch time delayed turn-off timer in preliminary filling power device includes the 17th
Resistance R17, the 6th capacitance C6, the first diode D1, the 4th resistance R4, thirteenth resistor R13, third comparator U15-c, the 5th
Field-effect tube Q5 and optical coupling isolator, the 17th resistance one end are electrically connected with DC power supply+12V, and the 17th resistance R17 is another
End negative input end compared with third comparator U15-c is electrically connected, while the 6th capacitance C6 of the 17th resistance R17 other ends series connection
It with DC power supply is electrically connected afterwards, the 17th resistance R17 the first diodes in parallel, the first diode D1 cathodes and DC power supply
+ 12V is electrically connected, mutually electric with the 5th field-effect tube Q5 grids after third comparator U15-c output ends series connection thirteenth resistor R13
Connection, while being electrically connected with DC power supply+12V after the 4th resistance R4 of third comparator U15-c output ends series connection；5th effect
Should pipe Q5 drain electrode be electrically connected with optical coupling isolator U3 input terminals, the luminous tube anodes of optical coupling isolator U3 input terminals connects the tenth
It is electrically connected with DC power supply+12V after six resistance R16；Optical coupling isolator U3 output ends and the first work(in preliminary filling power device
Rate switching tube Q1 phases are drivingly connected, series current li tauniter part on the first power switch tube Q1.Second relay coil delay cut-off is fixed
When device the 14th resistance R14, the 5th capacitance C5, the 5th resistance R5, the 4th comparator U15-d and the second field-effect tube Q3-b,
14 one end resistance R14 are electrically connected with DC power supply+12V, the 14th resistance R14 other ends and the 4th comparator U15-d ratios
It is electrically connected compared with negative input end, while with DC power supply being mutually electrically connected after the 5th capacitance C5 of the 14th resistance R14 other ends series connection
It connects, the 14th resistance R14 the 5th diode D5 of parallel connection, the 5th diode D5 cathodes the moon is electrically connected with DC power supply+12V；The
Four comparator U15-d output ends are electrically connected with the second field-effect tube Q3-b grids, and the second field-effect tube Q3-b drain electrodes are gone here and there all the way
It is electrically connected with DC power supply+12V after joining the 11st diode D11 and the 8th resistance R8, the second field-effect tube Q3-b drain electrodes are another
It is electrically connected all the way with the second relay S2 coil-ends；11st diode D11 anodes and the second field-effect tube Q3-b drain electrode phases
Electrical connection, the second relay S2 tip sides are electrically connected with main relay contacts end.Second relay S2 uses two-way relay
Parallel-connection structure is (see Fig. 4.
IN+, IN- in circuit diagram shown in Fig. 4 connect external control signal, and J+, J- meet S1 high-voltage relay coils, P1, P2
Connect two main contacts of S1 high-voltage relays（Namely main contacts 11 in Fig. 1）.J1, J2 be two-way small solid relay S2 after
Electric apparatus coil.
The typical circuit of the prior art（As shown in Figure 5）Electric current is very big when middle S1 relays are closed every time, is used to meet
It is required that needing to use high power relay, cost, weight, volume, the power consumption of relay will accordingly increase.
The anti-capacitive pulse relay component of the anti-capacitive load heavy current impact type DC relay of the present invention by second after
Electric appliance S2 miniature relay the+the first power switch tube Q1 power tubes+current limiting device power R15 resistance+intelligent control module（Sequential
Control circuit）+ main relay S1 high-voltage relays form, and because the second relay contact S2 is first closed when using every time, then drive
First power switch tube Q1 power tubes are connected, and the power R15 resistance current limliting through current limiting device 40 gives capacitance low current charge, it is main after
Electric appliance S1 is not closed, and after capacitance both end voltage rises, the voltage difference between S1 relay contacts is almost 0V, and S1 relays close
The impact for being not subjected to high current is closed, cost, weight, volume, the power consumption of S1 relays is substantially reduced, improves the longevity of relay
Life.
The entire closing course of the anti-capacitive load heavy current impact type high voltage direct current relay of the present invention:
1. when control line receives cut-in voltage, initial second field-effect tube Q3-b conductings, the second relay S2 small-powers after
Electric apparatus coil J1, J2 obtain electric contact and are first closed, non-loaded closure；
2. after several milliseconds, the 5th field-effect tube Q5 driving optocouplers separate device U3 optocoupler inputs, pre- through optical coupling isolator U3 drivings
The first power tube Q1 conductings are filled, electric current is through S2 miniature relays-》First power tube-》Current limiting device R15 power resistors, with compared with
Small electric current charges to capacitive load;
3. about 200 bold and unconstrained seconds, load capacitance C are charged to 85% or more rated voltage, immediately the first field-effect tube Q3-a conductings, main relay
Device S1 high-voltage relays coil 12 is powered, and main contacts 11 is closed；
4. after several milliseconds, Q5 shutdowns, optocoupler closes output, power tube Q1 shutdowns；
5. again after several milliseconds, Q3-a shutdowns, S2 low power relays J1, J2 are disconnected, idling cut-off.
6 anti-capacitive load heavy current impact type high voltage direct current relay closures controlled engineering completion.
7. the closure of the second relay S2 miniature relays is acted in light condition with shutdown.
In this way, high-voltage relay main contacts is closed during low current, low-voltage, small, long lifespan is damaged.Period preliminary filling
Circuit is contactless and has contact cooperation, and low power relay contact closure and release during zero current are harmless.Preliminary filling control
Component processed is isolated with high-voltage contact, isolation voltage ＞ 2750V ∽.
The above content and structure describes the basic principles and main features and advantages of the present invention of product of the present invention, one's own profession
The technical staff of industry should be recognized that.Merely illustrating the principles of the invention described in examples detailed above and specification is not departing from this
Under the premise of spirit and range, various changes and improvements may be made to the invention, these changes and improvements belong to requirement and protect
Within the scope of the invention of shield.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (10)
1. a kind of anti-capacitive load heavy current impact type DC relay, include the master with main contacts and contact pull-in winding after
Electric appliance, it is characterised in that：Further include preliminary filling control assembly, the preliminary filling control assembly includes that intelligent control module, power are opened
Component and current limiting device are closed, the switching power devices include the second relay, the first power switch tube and isolation drive mould
Block, the second relay coil are electrically connected with intelligent control module, and the first power switch tube passes through isolation drive module and intelligence
Control module is electrically connected, and switching power devices are in parallel with the main contacts both ends of main relay together after connecting with current limiting device
Electrical connection；Relay in use, intelligent control module control the second relay coil first it is electric to the second relay normally open contact
After closure, intelligent control module drive the first power switch tube conducting to capacitor charge, charge to capacitor voltage at both ends with
Supply voltage is equal or suitable, and when voltage is reduced to zero or is close to zero between main relay contacts, intelligent control module controls master again
Relay contact closure disconnects the second relay again after turning off the first power switch tube.
2. anti-capacitive load heavy current impact type DC relay described in accordance with the claim 1, it is characterised in that：Described
Two relays are adopted as small solid relay.
3. anti-capacitive load heavy current impact type DC relay described in accordance with the claim 1, it is characterised in that：The intelligence
Energy control module use sequential control circuit module, connect main relay when control electric sequential be followed successively by the second relay,
First power switch tube and main relay sequence work once electrified, the control sequential after main relay contacts are closed are followed successively by the first work(
Rate switching tube and the second relay sequence power off.
4. anti-capacitive load heavy current impact type DC relay described in accordance with the claim 1, it is characterised in that：The intelligence
Energy control module includes the first power switch Delayed conducting in main relay coil delay power timer, preliminary filling power device
The second relay in the first power switch time delayed turn-off timer and preliminary filling power device in timer, preliminary filling power device
Coil delay cut-off timer.
5. anti-capacitive load heavy current impact type DC relay according to claim 4, it is characterised in that：The master
Relay coil delay power timer, the first power switch Delayed conducting timer, the first power switch time delayed turn-off timing
Four back off timers of device and the second relay coil delay cut-off timer use four ratios with four road comparator chips
It is constituted compared with device integrated chip, corresponds to timer all the way per road comparator.
6. anti-capacitive load heavy current impact type DC relay described in accordance with the claim 1, it is characterised in that：The master
Relay coil delay power timer includes eleventh resistor, the 4th capacitance, the 4th resistance, first comparator and first effect
Ying Guan, eleventh resistor one end are electrically connected with DC power supply+12V, and the eleventh resistor other end compares calibration with first comparator
Input terminal third pin is electrically connected, first comparator compare after the 4th capacitance of positive input terminal third pin serial connection with DC power supply
Ground is electrically connected, and first comparator output end is electrically connected with the first fet gate, and eleventh resistor is parallel with the four or two
Pole pipe, the 4th diode cathode are electrically connected with DC power supply+12V；First FET drain is connected the tenth diode all the way
It is electrically connected with DC power supply+12V with after the 7th resistance, the first FET drain another way and the ends main relay coil J- phase
Electrical connection；Tenth diode anode is electrically connected with the first FET drain.
7. anti-capacitive load heavy current impact type DC relay described in accordance with the claim 1, it is characterised in that：Described is pre-
The the first power switch Delayed conducting timer filled in power device includes 3rd resistor, the 19th diode, the 7th electric appliance,
Two comparators, the 5th field-effect tube and optical coupling isolator, 3rd resistor one end are electrically connected with DC power supply+12V, 3rd resistor
The other end the 5th pin of positive input terminal compared with the second comparator is electrically connected, while the 3rd resistor other end the 7th capacitance of series connection
It with DC power supply being electrically connected afterwards, 3rd resistor is in series with the 19th diode, the 19th diode cathode and DC power supply+
12V is electrically connected；It is electrically connected with the 5th fet gate after second comparator output terminal the 18th diode of series connection, the tenth
Eight diode anodes are electrically connected with the 5th fet gate, and the 5th FET drain is mutually electric with optical coupling isolator input terminal
It connects, is electrically connected with DC power supply+12V after luminous tube anode the 16th resistance of series connection of optical coupling isolator input terminal；Optocoupler
Isolator output end is mutually drivingly connected with the first power switch tube in preliminary filling power device, limit of connecting in the first power switch tube
Flow device.
8. anti-capacitive load heavy current impact type DC relay described in accordance with the claim 1, it is characterised in that：Described is pre-
It includes the 17th resistance, the 6th capacitance, the first diode, the to fill the first power switch time delayed turn-off timer in power device
Four resistance, thirteenth resistor, third comparator, the 5th field-effect tube and optical coupling isolator, the 17th resistance one end and direct current
Source+12V is electrically connected, and the 17th resistance other end negative input end compared with third comparator is electrically connected, while the 17th electricity
It with DC power supply is electrically connected after the resistance other end the 6th capacitance of series connection, the 17th the first diode of resistor coupled in parallel, the one or two pole
Tube cathode is electrically connected with DC power supply+12V, third comparator output terminal connect thirteenth resistor after with the 5th field-effect tube grid
Pole is electrically connected, while being electrically connected with DC power supply+12V after third comparator output terminal the 4th resistance of series connection；5th effect
Should pipe drain electrode be electrically connected with optical coupling isolator input terminal, the luminous tube anode of optical coupling isolator input terminal the 16th resistance of series connection
It is electrically connected afterwards with DC power supply+12V；Optical coupling isolator output end mutually drives with the first power switch tube in preliminary filling power device
It is dynamic to connect, series current li tauniter part in the first power switch tube.
9. anti-capacitive load heavy current impact type DC relay described in accordance with the claim 1, it is characterised in that：Described
The 14th resistance of two relay coil delay cut-off timers, the 5th capacitance, the 5th resistance, the 4th comparator and the second field-effect
Pipe, the 14th resistance one end are electrically connected with DC power supply+12V, and the 14th resistance other end is relatively born defeated with the 4th comparator
Enter end to be electrically connected, while with DC power supply being electrically connected after the 14th resistance other end the 5th capacitance of series connection, the 14th electricity
Resistance the 5th diode in parallel, the 5th diode cathode the moon are electrically connected with DC power supply+12V；4th comparator output terminal and
Two fet gates are electrically connected, the second FET drain connect all the way after the 11st diode and the 8th resistance with direct current
Power supply+12V is electrically connected, and the second FET drain another way is electrically connected with the second relay coil end；11st pole
Tube anode is electrically connected with the second FET drain, and the second relay contact end is electrically connected with main relay contacts end.
10. according to the anti-capacitive load heavy current impact type DC relay described in claims 1 or 2 or 9, it is characterised in that：
Second relay uses two-way relay parallel-connection structure.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036959A (en) * | 2018-09-30 | 2018-12-18 | 浙江英洛华新能源科技有限公司 | Energy-saving pressurized relay |
| CN109638920A (en) * | 2018-12-28 | 2019-04-16 | 上海飞龙新能源汽车部件有限公司 | A kind of high pressure preliminary filling modular circuit for load storage energy capacitor |
| CN110416026A (en) * | 2019-07-30 | 2019-11-05 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of deep-sea high power capacitive load direct current contact protector |
| WO2020052393A1 (en) * | 2018-09-14 | 2020-03-19 | 珠海格力电器股份有限公司 | Charging apparatus and charging system |
| CN111224455A (en) * | 2020-01-14 | 2020-06-02 | 中国电子科技集团公司第三十八研究所 | Constant-pressure-difference-gradient-based unmanned aerial vehicle rapid charging method and application circuit thereof |
| CN112928738A (en) * | 2021-01-25 | 2021-06-08 | 合肥朗云物联科技股份有限公司 | Circuit of low-voltage direct-current relay for high-voltage direct current |
| CN114076844A (en) * | 2020-08-21 | 2022-02-22 | 深圳绿米联创科技有限公司 | Zero-crossing control method, electronic device, and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140133061A1 (en) * | 2012-11-15 | 2014-05-15 | Abl Ip Holding Llc | Systems and Methods for Delaying Actuation of a Relay |
| CN204885020U (en) * | 2015-06-30 | 2015-12-16 | 泰科电子(深圳)有限公司 | Relay module |
| CN205509847U (en) * | 2016-03-16 | 2016-08-24 | 广州视源电子科技股份有限公司 | Switch power supply relay starting circuit |
| CN106154892A (en) * | 2015-03-30 | 2016-11-23 | 黄世勇 | A kind of relay zero-crossing triggers on-off circuit |
| CN205959879U (en) * | 2016-08-18 | 2017-02-15 | 昆山国力源通新能源科技有限公司 | Built -in charging circuit in advance of direct current contactor |
| CN206293887U (en) * | 2016-11-07 | 2017-06-30 | 深圳市沃特玛电池有限公司 | A kind of relay contact anti-surge protection circuit |
-
2018
- 2018-03-22 CN CN201810239006.2A patent/CN108335947B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140133061A1 (en) * | 2012-11-15 | 2014-05-15 | Abl Ip Holding Llc | Systems and Methods for Delaying Actuation of a Relay |
| CN106154892A (en) * | 2015-03-30 | 2016-11-23 | 黄世勇 | A kind of relay zero-crossing triggers on-off circuit |
| CN204885020U (en) * | 2015-06-30 | 2015-12-16 | 泰科电子(深圳)有限公司 | Relay module |
| CN205509847U (en) * | 2016-03-16 | 2016-08-24 | 广州视源电子科技股份有限公司 | Switch power supply relay starting circuit |
| CN205959879U (en) * | 2016-08-18 | 2017-02-15 | 昆山国力源通新能源科技有限公司 | Built -in charging circuit in advance of direct current contactor |
| CN206293887U (en) * | 2016-11-07 | 2017-06-30 | 深圳市沃特玛电池有限公司 | A kind of relay contact anti-surge protection circuit |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052393A1 (en) * | 2018-09-14 | 2020-03-19 | 珠海格力电器股份有限公司 | Charging apparatus and charging system |
| CN109036959A (en) * | 2018-09-30 | 2018-12-18 | 浙江英洛华新能源科技有限公司 | Energy-saving pressurized relay |
| CN109036959B (en) * | 2018-09-30 | 2023-11-07 | 浙江英洛华新能源科技有限公司 | Energy-saving booster relay |
| CN109638920A (en) * | 2018-12-28 | 2019-04-16 | 上海飞龙新能源汽车部件有限公司 | A kind of high pressure preliminary filling modular circuit for load storage energy capacitor |
| CN109638920B (en) * | 2018-12-28 | 2024-07-12 | 上海飞龙新能源汽车部件有限公司 | High-voltage pre-charging module circuit for load energy storage capacitor |
| CN110416026A (en) * | 2019-07-30 | 2019-11-05 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of deep-sea high power capacitive load direct current contact protector |
| CN110416026B (en) * | 2019-07-30 | 2021-09-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Deep-sea high-power capacitive load direct-current contact protector |
| CN111224455A (en) * | 2020-01-14 | 2020-06-02 | 中国电子科技集团公司第三十八研究所 | Constant-pressure-difference-gradient-based unmanned aerial vehicle rapid charging method and application circuit thereof |
| CN114076844A (en) * | 2020-08-21 | 2022-02-22 | 深圳绿米联创科技有限公司 | Zero-crossing control method, electronic device, and storage medium |
| CN112928738A (en) * | 2021-01-25 | 2021-06-08 | 合肥朗云物联科技股份有限公司 | Circuit of low-voltage direct-current relay for high-voltage direct current |
| CN112928738B (en) * | 2021-01-25 | 2023-09-08 | 广州佛朗斯股份有限公司 | Circuit for high-voltage direct current of low-voltage direct current relay |
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