CN107134391A - Relay control circuit and car - Google Patents
Relay control circuit and car Download PDFInfo
- Publication number
- CN107134391A CN107134391A CN201710425260.7A CN201710425260A CN107134391A CN 107134391 A CN107134391 A CN 107134391A CN 201710425260 A CN201710425260 A CN 201710425260A CN 107134391 A CN107134391 A CN 107134391A
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- voltage
- control
- circuit according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005611 electricity Effects 0.000 claims description 8
- 230000005669 field effect Effects 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 8
- 150000004706 metal oxides Chemical group 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 7
- 230000005347 demagnetization Effects 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000004821 Contact adhesive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Classifications
-
- 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
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
- H01H47/325—Energising current supplied by semiconductor device by switching regulator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Relay Circuits (AREA)
Abstract
The invention provides a relay control circuit and an automobile, wherein the relay control circuit comprises: a relay; a switching element connected in series with the relay; a voltage dividing element connected in series with the relay; and a transient short-circuit element connected in parallel with the voltage dividing element. According to the embodiment of the invention, the voltage dividing element is arranged, so that the voltage at two ends of the coil is still in a normal voltage range when the working voltage of the relay is higher, and the service life of the relay is effectively prolonged. Meanwhile, in the embodiment of the invention, in order to solve the problem that the voltage at two ends of the relay may not reach the voltage required for closing when the working voltage is lower after the voltage division of the voltage division element, an instantaneous short-circuit element is arranged, so that the relay can be normally closed.
Description
Technical field
The present invention relates to technical field of circuit design, more particularly to a kind of control relay circuit and automobile.
Background technology
Current Vehicular charger and other electric equipments generally use coil electromagnetism relay, add at relay coil two ends
Will pass through certain electric current in upper specified voltage, coil, so as to produce galvanomagnetic-effect, internal switch contact (COM-ON) just
The pulling force of spring can be overcome in the presence of electromagnetic force, the action of adhesive or release is carried out.After coil blackout, coil current
It is zero, electromagnetic force disappears, and contact can recover origin-location under the action of the spring.
But, power supply is that vehicle-mounted low pressure is often electric in vehicle, and operating voltage changes greatly (such as 9V~16V), in order that
Normally closed can be realized when telling somebody what one's real intentions are voltage by obtaining relay, and often the minimum in operating voltage carries out selection relay
Device, now, relay is when operating voltage is higher, and relay coil both end voltage is too high, can exceed that coil rating, long
Time service can burn out relay coil.
The content of the invention
The technical problem to be solved of the embodiment of the present invention is to provide a kind of control relay circuit and automobile, to realize after
Electrical equipment being capable of normal work in the circuit that operating voltage is changed greatly.
In order to solve the above technical problems, the embodiments of the invention provide a kind of control relay circuit, including：
Relay；
The switch element connected with the relay；
The sectional pressure element connected with the relay；And,
The instantaneous short-circuit element in parallel with the sectional pressure element.
Further, the control relay circuit also includes：
The demagnetization element in parallel with the relay.
Further, the switch element is Metal-Oxide Semiconductor field-effect transistor, the metal-oxide
The grid of semiconductor field effect transistor is connected with a control signal, the negative pole connection of source electrode and power supply, drain and the relay
Device is connected.
Further, the sectional pressure element is first resistor, and the first end of the first resistor and the positive pole of power supply are connected,
Second end of the first resistor is connected with the first end of the relay.
Further, the instantaneous short-circuit element is one or more electric capacity.
Further, the demagnetization element is diode, and the second end of the positive pole of the diode and the relay connects
Connect, the negative pole of the diode is connected with the first end of the relay, wherein, the first end and power supply of the relay are just
Pole is connected, and the second end of the relay is connected with the negative pole of the power supply.
Further, a partial pressure protection element is in series with the circuit that the switch element is connected with a control signal.
Further, the partial pressure protection element is second resistance.
Further, the relay is DC relay or AC relay.
According to a further aspect of the invention, the embodiment of the present invention additionally provides a kind of automobile, including charging circuit, in addition to such as
Upper described control relay circuit.
Compared with prior art, a kind of control relay circuit and automobile provided in an embodiment of the present invention, at least with
Lower beneficial effect：
The embodiment of the present invention, by setting sectional pressure element so that the electricity at relay coil two ends when operating voltage is higher
Pressure effectively extends the service life of relay still in normal voltage range.Meanwhile, the embodiment of the present invention, in order to solve point
Press after element partial pressure, when operating voltage is relatively low, relay both end voltage may be unable to reach the voltage that closure is required, set one
Instantaneous short-circuit element so that relay being capable of normally closed.
Brief description of the drawings
Fig. 1 is the circuit diagram one of the control relay circuit of the embodiment of the present invention；
Fig. 2 is the circuit diagram two of the control relay circuit of the embodiment of the present invention.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.It is only there is provided the specific detail of such as specific configuration and component in the following description
In order to help comprehensive understanding embodiments of the invention.Therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without departing from scope and spirit of the present invention.In addition, for clarity and brevity, eliminate pair
The description of known function and construction.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text means relevant with embodiment
During special characteristic, structure or characteristic are included at least one embodiment of the present invention.Therefore, occur everywhere in entire disclosure
" in one embodiment " or " in one embodiment " identical embodiment is not necessarily referred to.In addition, these specific feature, knots
Structure or characteristic can be combined in one or more embodiments in any suitable manner.
Referring to Fig. 1 and Fig. 2, the embodiments of the invention provide a kind of control relay circuit, including：
Relay K；
The switch element connected with the relay K；
The sectional pressure element connected with the relay；And,
The instantaneous short-circuit element in parallel with the sectional pressure element.
In embodiments of the present invention, by setting sectional pressure element so that relay K coil two ends when operating voltage is higher
Voltage still in normal voltage range, it is to avoid relay K coil both end voltage is too high, more than coil rating, long
Time service burns out relay coil, effectively extends relay K service life.But now, when operating voltage is low pressure,
The voltage at relay coil two ends is likely lower than the minimum voltage that closure needs, it is impossible to normally closed.In embodiments of the present invention,
In order to solve after sectional pressure element partial pressure, when operating voltage is relatively low, relay K may be unable to reach the voltage of closure, set one
Instantaneous short-circuit element, the instantaneous short-circuit element can be in instantaneously connected state in control circuit communication, and in the control electricity
It is in off-state after road is stable so that when controlling closing of circuit, relay K being capable of normally closed.Wherein, relay K is in control
Circuit communication processed instantaneously be in closure state after, control circuit stability when, due to relay K maintain closure required for voltage
Less than the voltage required for closure, so relay K is still in closure state.
Further illustrate below in conjunction with the accompanying drawings.Instantaneous in closing of circuit referring to Fig. 1, instantaneous short-circuit element is in connected state,
And resistance is smaller, now electric current is via instantaneous short-circuit element to relay K, and the voltage satisfaction closure at relay coil two ends is required
Voltage, relay K closures.Referring next to Fig. 2, when circuit stability, instantaneous short-circuit element is in off-state, and electric current is via partial pressure
Element is to relay K, and now the voltage at relay coil two ends is due to through sectional pressure element partial pressure, so relay K can be in energy
Worked in the voltage range enough born.Wherein, can also be an instantaneous short circuit current for instantaneous short-circuit element, including one opens
Close, a control signal can be received and closed or disconnected, when closing of circuit, then send control signal control instantaneous short-circuit electricity
In road switch closure, after preset time then control described in switch off.
Wherein, the control relay circuit also includes：The demagnetization element in parallel with the relay K.Gone by setting
Magnetic cell is when circuit disconnects, and the electromagnetism that relay K coil is produced is removed, and prevents relay coil from having encouraged very high anti-
To electromotive force, switch element or Metal-Oxide Semiconductor field-effect transistor is caused to damage, while effectively extending relay
K working life.
Wherein, the switch element is Metal-Oxide Semiconductor field-effect transistor Q, and the metal-oxide is partly led
Body field-effect transistor Q grid is connected with a control signal, the negative pole connection of source electrode and power supply, drain and the relay K
Connection.By relay control signal RELAY-CONTROL, control Metal-Oxide Semiconductor field-effect transistor Q open or
Shut-off, realizes Control.
Wherein, the switch element can also be triode.
Wherein, the sectional pressure element is that first resistor R1, the first resistor R1 first end and the positive pole of power supply are connected,
The second end of the first resistor R1 is connected with the first end of the relay K.
Wherein, sectional pressure element be preferably arranged on relay K and positive source connection circuit on, can also be arranged on after
On the circuit that electrical equipment K is connected with power cathode.
Wherein, the instantaneous short-circuit element is one or more electric capacity C.Wherein, can will be multiple when setting multiple electric capacity
Electric capacity is connected, and now, the electric capacity of multiple series connection is in parallel with sectional pressure element.It can also be provided that multiple electric capacity are in parallel, it is now, each
Electric capacity parallel with one another is in parallel with sectional pressure element.
Wherein, make use of electric capacity instantaneous short circuit characteristic, electric capacity C circuit communication instantaneous short circuit, in closure state, in electricity
It is in off-state after road is stable.Wherein, electric capacity C is preferably ceramics or electrochemical capacitor, and capacitance is bigger, the high magnetization energy duration
It is longer.
Referring to Fig. 1, switch element is opened moment, electric current (direction of arrow shown in Fig. 1) flow through electric capacity C, relay coil and
Switch element returns to power supply+V-arrangement into loop, and switch element opens moment, utilizes electric capacity instantaneous short circuit characteristic, power supply+V voltage winks
Between be all added to relay coil, produce enough magnetization energies, attracting electric relay K contacts.For example, when the normal electricity+V of low pressure is relatively low
During for 9V, switch element opens moment, 9V voltages can be all added to relay coil excitation, magnetization energy, excitation time
Meet after relay K action requests, relay K contact adhesives.
Referring to Fig. 2, after switch element stable state is opened, electric current (direction of arrow shown in Fig. 2) flows through sectional pressure element, relay line
Circle and switch element return to power supply+V-arrangement into loop, now sectional pressure element and (the switching elements conductive pressure drop of relay coil partial pressure
Ignore), it is ensured that relay coil steady state voltage is more than its release voltage value, and relay K will maintain attracting state.When low
When pressing the often more a height of 16V of electricity, switch element moment, which opens, causes the relay coil 16V working times shorter, although instantaneous power
It is larger, but will not also burn relay coil.Using this control circuit, it is often electric to meet vehicle-mounted low pressure, gamut work electricity
Press (9-16Vdc), relay K is reliably controlled, design requirement is met.
Wherein, the demagnetization element is diode D, and the second end of the positive pole of the diode D and the relay K connects
Connect, the negative pole of the diode D is connected with the first end of the relay K, wherein, the first end and power supply of the relay K
Positive pole connection, the second end of the relay K is connected with the negative pole of the power supply.
Wherein, a partial pressure protection element is in series with the circuit that the switch element is connected with a control signal.By setting
Put partial pressure protection element and partial pressure is carried out to switch element, prevent switch element from damaging.
Wherein, the partial pressure protection element is second resistance R2.
Wherein, the relay K is DC relay or AC relay.It is understood that the embodiment of the present invention
Control relay circuit goes for DC relay or AC relay.
According to another aspect of the invention, the embodiment of the present invention additionally provides a kind of automobile, including charging circuit, in addition to such as
Upper described control relay circuit.
To sum up, the embodiment of the present invention, by setting sectional pressure element so that relay K coils two when operating voltage is higher
The voltage at end extends relay K service life still in normal voltage range, effectively.Meanwhile, the embodiment of the present invention, in order to
Solve after sectional pressure element partial pressure, when operating voltage is relatively low, relay K may be unable to reach the voltage of closure, and setting one is instantaneous
Short-circuit component so that in closing of circuit, relay K being capable of normally closed.Relay K is control effectively, circuit is simple,
Reliably, cost is very low, meets vehicle-mounted+V voltage pulsations than larger occasion.
It should also be noted that, herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
There is any this actual relation or order.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of control relay circuit, it is characterised in that including：
Relay；
The switch element connected with the relay；
The sectional pressure element connected with the relay；And,
The instantaneous short-circuit element in parallel with the sectional pressure element.
2. control relay circuit according to claim 1, it is characterised in that the control relay circuit also includes：
The demagnetization element in parallel with the relay.
3. control relay circuit according to claim 1, it is characterised in that the switch element is metal-oxide
Semiconductor field effect transistor, the grid of the Metal-Oxide Semiconductor field-effect transistor is connected with a control signal, source
The negative pole connection of pole and power supply, drain is connected with the relay.
4. control relay circuit according to claim 1, it is characterised in that the sectional pressure element is first resistor, institute
State the first end of first resistor and the positive pole of power supply is connected, the second end of the first resistor connects with the first end of the relay
Connect.
5. control relay circuit according to claim 1, it is characterised in that the instantaneous short-circuit element is one or many
Individual electric capacity.
6. control relay circuit according to claim 2, it is characterised in that the demagnetization element is diode, described
The positive pole of diode is connected with the second end of the relay, and the first end of the negative pole of the diode and the relay connects
Connect, wherein, the first end of the relay and the positive pole of power supply are connected, the second end of the relay and the negative pole of the power supply
Connection.
7. control relay circuit according to claim 1, it is characterised in that the switch element and a control signal connect
A partial pressure protection element is in series with the circuit connect.
8. control relay circuit according to claim 7, it is characterised in that the partial pressure protection element is the second electricity
Resistance.
9. control relay circuit according to claim 1, it is characterised in that the relay is DC relay or friendship
Current relay.
10. a kind of automobile, including charging circuit, it is characterised in that also including the relay as described in any one of claim 1~9
Device controls circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710425260.7A CN107134391A (en) | 2017-06-07 | 2017-06-07 | Relay control circuit and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710425260.7A CN107134391A (en) | 2017-06-07 | 2017-06-07 | Relay control circuit and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107134391A true CN107134391A (en) | 2017-09-05 |
Family
ID=59733862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710425260.7A Pending CN107134391A (en) | 2017-06-07 | 2017-06-07 | Relay control circuit and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107134391A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931312A (en) * | 2019-11-26 | 2020-03-27 | 广州金升阳科技有限公司 | Contactor power-saving control method and control circuit applying same |
| CN115799001A (en) * | 2022-11-09 | 2023-03-14 | 东方博沃（北京）科技有限公司 | Relay driving device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779590Y (en) * | 2005-03-12 | 2006-05-10 | 佛山市顺德区松本电工实业有限公司 | Low energy consumption relay drive circuit |
| JP2007294226A (en) * | 2006-04-25 | 2007-11-08 | Toyota Industries Corp | Relay driving circuit |
| CN106252158A (en) * | 2016-09-19 | 2016-12-21 | 北京新能源汽车股份有限公司 | Electromagnetic relay circuit |
-
2017
- 2017-06-07 CN CN201710425260.7A patent/CN107134391A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779590Y (en) * | 2005-03-12 | 2006-05-10 | 佛山市顺德区松本电工实业有限公司 | Low energy consumption relay drive circuit |
| JP2007294226A (en) * | 2006-04-25 | 2007-11-08 | Toyota Industries Corp | Relay driving circuit |
| CN106252158A (en) * | 2016-09-19 | 2016-12-21 | 北京新能源汽车股份有限公司 | Electromagnetic relay circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931312A (en) * | 2019-11-26 | 2020-03-27 | 广州金升阳科技有限公司 | Contactor power-saving control method and control circuit applying same |
| CN110931312B (en) * | 2019-11-26 | 2022-05-20 | 广州金升阳科技有限公司 | Contactor power-saving control method and control circuit applying same |
| CN115799001A (en) * | 2022-11-09 | 2023-03-14 | 东方博沃（北京）科技有限公司 | Relay driving device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213292001U (en) | Pre-charging circuit, power distribution device adopting pre-charging circuit and electric automobile | |
| CN203504280U (en) | Direct current power supply under-voltage automatic switching system based on microprocessor power supply monitor | |
| WO2013013555A1 (en) | An access control device for communication power supply storage battery | |
| CN201750183U (en) | A lithium iron phosphate battery charging protection device for communication base stations | |
| CN102904329B (en) | Electric power management circuit | |
| CN102931647A (en) | Surge current suppression circuit and lamp | |
| CN107134391A (en) | Relay control circuit and car | |
| CN109066958A (en) | Power supply series-parallel switching circuit and switching method and power supply equipment | |
| CN205263548U (en) | Manual stringent control device of electronic pallet truck electromagnetic braking ware | |
| CN206564455U (en) | A kind of electronic direct-current breaker | |
| CN203707030U (en) | Magnetic maintaining relay drive circuit | |
| CN103972859A (en) | overvoltage protection circuit | |
| CN219406357U (en) | New energy electric vehicle and switch control circuit thereof | |
| CN111431148A (en) | battery protection circuit | |
| CN202067728U (en) | Permanent magnetic contactor capable of magnetic holding in power interruption | |
| CN215419719U (en) | Automatic switching device for alternating current and direct current power supplies of vehicle-mounted equipment | |
| CN202487497U (en) | Isolation drive circuit of direct current contactor | |
| CN206992785U (en) | A kind of mains-supplied of communication base station and the compensation device of Remote Power Supply power supply | |
| CN206040549U (en) | But switching power's relay | |
| CN204613629U (en) | A power relay control circuit | |
| CN201508806U (en) | Action accelerating circuit of electrical relay | |
| CN104901093A (en) | Bluetooth power supply plug | |
| CN220172909U (en) | Charger and charging equipment | |
| CN220553391U (en) | Switch module for contactor and contactor module | |
| CN204029715U (en) | Large-current high-voltage commutation circuit for relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170905 |
|
| WD01 | Invention patent application deemed withdrawn after publication |