CN109686603A - A kind of electronic arc eliminating automobile electromagnetic switch - Google Patents
A kind of electronic arc eliminating automobile electromagnetic switch Download PDFInfo
- Publication number
- CN109686603A CN109686603A CN201811640872.9A CN201811640872A CN109686603A CN 109686603 A CN109686603 A CN 109686603A CN 201811640872 A CN201811640872 A CN 201811640872A CN 109686603 A CN109686603 A CN 109686603A
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- CN
- China
- Prior art keywords
- contact
- resistor
- motor
- switch
- field effect
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/42—Impedances connected with contacts
-
- 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
Abstract
The present invention discloses a kind of electronic arc eliminating automobile electromagnetic switch, battery is connect with the first contact, battery also with ignition switch, hold-in winding is connected with ground connection, sucking coil one end, which is connected in the middle part of conducting wire with ignition switch with hold-in winding, to be connect, the sucking coil other end is connect with the second contact, second contact is also connect with dc motor one end, the other end of dc motor is grounded, first contact and the second contact are connected with the drain electrode of power field effect pipe and source electrode respectively, the both ends of dc motor are connected by first diode, the parallel circuit of first resistor and second resistance composition, the grid and first resistor of power field effect pipe, second resistance is connected with capacitor, direct current generator both ends parallel connection 3rd resistor.The present invention has many advantages, such as structure simply and reliable operation, can eliminate contact contact surface contacting or disconnect and generate electric arc ablated surface, improve automobile electromagnetic and switch reliable operation and service life.
Description
Technical field
The present invention relates to technical field of automobile engine, in particular to a kind of electronic arc eliminating automobile electromagnetic switch.
Background technique
Automobile engine is made of dc motor and electromagnetic switch, and electromagnetic switch is used to control the work of dc motor
Make state, engine is when cold conditions is started, due under gravity, lubricating oil on the cylinder wall of engine adhesion amount compared with
It is few, so that the lubricating oil pressure and storage of related other component are also considerably less, so as to cause the direct current of automobile engine
Motor may be up to 200~2000 amperes in the electric current of initialization.
As shown in Figure 1, the electromagnetic switch of the prior art, essence is a dual coil electromagnetic relay, electromagnetic switch work
Initial turn-on stage, constant conduction stage and disconnected phase can be divided by making state, initial turn-on stage and disconnected phase by
It is influenced in factors such as mechanical shocks, therefore generally requires lasting several ms, during this period of time, the contact surface of contact is in height
The electrical communication of speed or the oscillatory regime of disconnection, and in high speed electrical communication and the duration of oscillation is disconnected, between the contact surface of contact
Arcing events will be will form, so that contact contact surface be caused gradually to damage, this also exactly influences the electromagnetic relay service life
Main cause.
The electromagnetic switch of the prior art mainly includes sucking coil 5, hold-in winding 3, is connected to form the iron being structure as a whole
Core 4 and conductive plate 7, the reset spring 18 for being placed on 4 outer peripheral surface of iron core, the first contact 8, the second contact 9 and shell etc..Cause electricity
The phenomenon that magnetic switch failure includes two.
One is the damage of 7 contact surface of the first contact 8, the second contact 9 and conductive plate, driver passes through ignition switch 2
Control electromagnetic coil working condition, and then control dc motor 6, but automobile engine during startup, due to
200~2000 amperes are up to by the electric current of the first contact 8, the second contact 9 and conductive plate 7, therefore is worked in electromagnetic switch
Original state and terminate state moment, because of reasons such as mechanical oscillation between the first contact 8, the second contact 9 and conductive plate 7,
The contact surface of the first contact 8, the second contact 9 and conductive 7 disks is set to frequently switch on or disconnect, therefore strong electric arc easy to form is put
Electricity, and then cause the contact surface surface of the first contact 8, the second contact 9 and conductive plate 7 ablated, it will cause contact surface in this way
Resistance is excessive, so that starter is powerless even can not normally to be started, or since contact resistance between the two is excessive, causes to contact
Point temperature increases rapidly, and electric arc can form spot welding phenomenon on the contact surface, make two contacts and 7 adhesion of conductive plate, finally make to send out
Motivation can not normally exit working condition.When engine starts or stops every time, it can all cause electric arc to 7 table of contact and conductive plate
Face ablation, and ablated surface can also aggravate arc stiffness, then will form a vicious circle process in this way.
The second is plunger return movement be sucking coil 5, hold-in winding 3,18 three's collective effect of reset spring and complete,
From attached drawing 1 it is found that when the moment that ignition switch 2 disconnects, due to effect of inertia, the first contact 8, the second contact 9 and conductive plate 7
There are no disconnections, so that the current direction by sucking coil 5 be it is opposite, both sucking coil 5 and hold-in winding 3 are logical
The current direction crossed is on the contrary, correspondingly the magnetic direction of the two is also on the contrary, the magnetic field generated on iron core 4 in this way then can be mutual
It offsets, iron core 4 and conductive plate 7 return to initial position under the effect of reset spring 18, since the circle number of sucking coil 5 is than keeping line
The circle number of circle 3 is few, is resetting moment, the magnetic field of the two is difficult to cancel out each other to zero.
It is led in order to solve the above technical problems, the prior art generallys use to change electromagnetic switch Design of Mechanical Structure and improve
Electroplax and slider material, but these are all passive type solutions, therefore unreal to the service life for extending electromagnetic switch
Matter meaning.
Summary of the invention
The main object of the present invention is to propose that a kind of structure is simply switched with the electronic arc eliminating automobile electromagnetic of reliable operation, purport
Generation electric arc ablated surface is being contacted or disconnected eliminating contact contact surface, automobile electromagnetic switch reliable operation is being improved and uses the longevity
Life.
To achieve the above object, a kind of electronic arc eliminating automobile electromagnetic switch proposed by the present invention, battery and the first contact
Electrical connection, the battery are also successively connected with ignition switch, hold-in winding and ground connection, sucking coil one end and the igniting
Switch, which is connected in the middle part of conducting wire with the hold-in winding, to be electrically connected, and the sucking coil other end is electrically connected with the second contact, described
The integral structure being connected to form by iron core and conductive plate is equipped between hold-in winding and sucking coil, the outer diameter surface cover has
Reset spring, second contact are also electrically connected with dc motor one end, the other end ground connection of the dc motor, described
First contact and second contact are connected with the drain electrode of power field effect pipe and source electrode respectively, the both ends of the dc motor
Be connected the parallel circuit that is made of first diode, first resistor and second resistance, the grid of the power field effect pipe with
First resistor, second resistance and capacitor are connected, and the both ends of the direct current generator are parallel with 3rd resistor.
Preferably, the second diode is electrically connected between the sucking coil and second contact.
Preferably, the 3rd resistor other end is electrically connected with third diode.
Preferably, the cathode of the first diode is connected with the first resistor, the cathode of second diode with
The dc motor is connected, and the cathode of the third diode is connected with the 3rd resistor.
Preferably, the turn-on time of the power field effect pipe is controlled in 1~2ms.
Preferably, the model HY5208W of the power field effect pipe.
Technical solution of the present invention has the advantage that compared with the prior art
Technical solution of the present invention protects electro-magnet switch inner contact by using electronic arc eliminating mode, effectively improves electromagnetism
The functional reliability of switch and extension service life.
Technical solution of the present invention is after dc motor completes the starting effect of engine, when ignition switch disconnects, by
In the machinery inertial of electromagnetic switch iron core, inner contact is disconnected not yet, using the unilateal conduction performance of diode, is thoroughly cut
The electric current of disconnected hold-in winding and sucking coil, it is ensured that core field is zero and smoothly completes reset.
Technical solution of the present invention passes through the dc motor both ends parallel connection third diode and 3rd resistor structure in engine
At self inductance current absorption circuit, the self-induction electric energy for generating dc motor Inside coil is by third diode in 3rd resistor
On be consumed in the form of fever, to guarantee the functional reliability of dc motor.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram that the automobile electromagnetic of the prior art switchs；
Fig. 2 is the structural schematic diagram that electronic arc eliminating automobile electromagnetic of the invention switchs.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of electronic arc eliminating automobile electromagnetic switch.
Refer to Fig. 2, the battery 1 of the embodiment of the present invention is electrically connected with the first contact 8, battery 1 also successively with igniting
Switch 2, hold-in winding 3 and ground connection are connected, and 5 one end of sucking coil conducting wire middle part that is connected with ignition switch 2 with hold-in winding 3 is electric
Connection, 5 other end of sucking coil are electrically connected with the second contact 9, are equipped with by iron core 4 and are led between hold-in winding 3 and sucking coil 5
The integral structure that electroplax 7 is connected to form, 4 outer peripheral surface of iron core are cased with reset spring 18, the second contact 9 also with dc motor 6 one
End electrical connection, the other end ground connection of dc motor 6, the first contact 8 and the leakage with power field effect pipe 11 respectively of the second contact 9
Pole is connected with source electrode, and the both ends of dc motor 6 are connected to be made of first diode 17, first resistor 16 and second resistance 15
Parallel circuit, the grid of power field effect pipe 11 is connected with first resistor 16, second resistance 15 and capacitor 14, direct current
The both ends of motivation 6 are parallel with 3rd resistor 12.
The second diode 10 is electrically connected between the sucking coil 5 of the present embodiment and the second contact 9, it is preferable that this implementation
The both ends of the dc motor 6 of example are also in parallel to be connected with the 3rd resistor 12 being sequentially connected in series and third diode 13, by straight
6 both ends parallel connection third diode 16 of galvanic electricity motivation and 3rd resistor 12 constitute self inductance current absorption circuit, make in dc motor 6
The self-induction electric energy that portion's coil generates is consumed by third diode 13 and 12 structure of 3rd resistor in the form generated heat.
Preferably, the cathode of the first diode 17 of the present embodiment is connected with first resistor 16, and the second diode 10 is born
Pole is connected with dc motor 6, and the cathode of third diode 13 is connected with 3rd resistor 12.
Preferably, the turn-on time of the power field effect pipe 11 of the present embodiment is 1~2ms.
Preferably, the model HY5208W of the power field effect pipe 11 of the present embodiment.
Refer to Fig. 2, the working principle of the electronic arc eliminating automobile electromagnetic switch of the embodiment of the present invention are as follows:
The power field effect pipe 11 at 9 both ends of the first contact 8 and the second contact is connected in parallel in actual work, works as ignition switch
When 2 closure, sucking coil 5 and hold-in winding 3 generate equidirectional magnetic field superposition and the magnetic field force generated makes by iron core 4 and conductive plate
7 integral structures being connected to form integrally overcome reset spring 18 and move right, and such electromagnetic switch enters the initial turn-on stage,
And conductive plate 7 at this time, the first contact 8 are connected for the first time with 9 three of the second contact, and since the self-induction of dc motor 6 is imitated
Should be weaker, such first contact 8, conductive plate 7, the transient current of the second contact 9 and dc motor 6 are very small, but at this time
In the circuit being connected with the upper end of dc motor 6, the current potential of H point is the output voltage of battery 1, can pass through the one or two in this way
Pole pipe 17 and second resistance 15 charge to capacitor 14, and the both end voltage of capacitor 14 is increased rapidly, power
Field-effect tube 11 also quickly enters saturation state, and 1 electric current of battery can be direct current by electromagnetic switch and power MOS field effect transistor 11
Motor 6 is powered.
When disconnecting conductive plate 7, the first contact 8 and 9 moment of the second contact, the energy storage effect due to capacitor 14 and first
The unilateral conduction and 11 output resistance of power field effect pipe of diode 17 are very big, so that the electricity at 14 both ends of capacitor
Pressure is able to maintain that a period of time, and this guarantees be still within saturation state, such electric power storage in secondary instantaneous power field-effect tube 11
1 electric current of pond can be powered by power field effect pipe 11 for dc motor.
When conductive plate 7, the first contact 8 and the second contact 9 are in next connection moment, then above-mentioned process is repeated.
The electromagnetic switch of the present embodiment is at the initial turn-on stage of work, conductive plate 7, the first contact 8, the second contact 9
After connecting for the first time, power field effect pipe 11 is in a saturated state always, so that conductive plate 7, the touching of the first contact 8, second
Voltage between 9 threes of point is zero, destroys the condition of electric arc formation in this way, thoroughly solves between each contact and break-over disk 7
Contact surface is easy to appear the technical issues of arc erosion.
The present embodiment by setting second resistance 15 so that when conductive plate 14, the first contact 8, the second contact 9 disconnection when
Between it is too long when, the high current for flowing through power field effect pipe 11 will lead to its own fever, and when power field effect pipe 11 is connected
Between it is too long, it will directly result in fever and damage, therefore by setting second resistance 15 can discharge capacitor 14, and
The resistance value of second resistance 15 can be suitably selected, so that the turn-on time of power field effect pipe 11 is controlled in 1~2ms, is avoided
Power field effect pipe 11 damages.
Second diode 10 of the present embodiment provides current path during ignition switch is closed, for sucking coil 5, straight
After galvanic electricity motivation 6 completes generator starting, when ignition switch 2 disconnects, due to the machinery inertial of iron core 4, inner contact is still
It does not disconnect, H point is still 1 voltage of battery, is reversely not turned on characteristic using the second diode 10, thoroughly cuts off hold-in winding
3 and sucking coil 5 electric current, it is ensured that iron core 4 is well on reset when magnetic field is zero, and avoids the electromagnetic switch of the prior art
It is using this stage sucking coil 5 and 3 magnetic direction of hold-in winding on the contrary, but inclined in the presence of the resultant magnetic field after the two magnetic field cancellation
Electromagnetic switch is caused to reset failure from excessive.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the design of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/it is used in it indirectly
He is included in scope of patent protection of the invention relevant technical field.
Claims (6)
1. a kind of electronic arc eliminating automobile electromagnetic switch, which is characterized in that battery is electrically connected with the first contact, and the battery is also
Successively it is connected with ignition switch, hold-in winding and ground connection, sucking coil one end and the ignition switch and the hold-in winding
Be connected the electrical connection of conducting wire middle part, and the sucking coil other end is electrically connected with the second contact, the hold-in winding and sucking coil
Between be equipped with the integral structure that is connected to form by iron core and conductive plate, the outer diameter surface cover has a reset spring, described second
Contact is also electrically connected with dc motor one end, the other end of dc motor ground connection, first contact and described the
Two contacts are connected with the drain electrode of power field effect pipe and source electrode respectively, and the both ends of the dc motor are connected by the one or two pole
The parallel circuit of pipe, first resistor and second resistance composition, the grid and first resistor of the power field effect pipe, the second electricity
Resistance and capacitor are connected, and the both ends of the direct current generator are parallel with 3rd resistor.
2. electronic arc eliminating automobile electromagnetic switch as described in claim 1, which is characterized in that the sucking coil and described second
The second diode is electrically connected between contact.
3. electronic arc eliminating automobile electromagnetic as claimed in claim 2 switch, which is characterized in that the 3rd resistor other end and the
The electrical connection of three diodes.
4. electronic arc eliminating automobile electromagnetic as claimed in claim 3 switch, which is characterized in that the cathode of the first diode with
The first resistor is connected, and the cathode of second diode is connected with the dc motor, and the third diode is born
Pole is connected with the 3rd resistor.
5. electronic arc eliminating automobile electromagnetic switch as described in claim 1, which is characterized in that the conducting of the power field effect pipe
Time controls in 1~2ms.
6. electronic arc eliminating automobile electromagnetic switch as described in claim 1, which is characterized in that the model of the power field effect pipe
For HY5208W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640872.9A CN109686603A (en) | 2018-12-29 | 2018-12-29 | A kind of electronic arc eliminating automobile electromagnetic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640872.9A CN109686603A (en) | 2018-12-29 | 2018-12-29 | A kind of electronic arc eliminating automobile electromagnetic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109686603A true CN109686603A (en) | 2019-04-26 |
Family
ID=66191295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811640872.9A Pending CN109686603A (en) | 2018-12-29 | 2018-12-29 | A kind of electronic arc eliminating automobile electromagnetic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109686603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115083803A (en) * | 2022-06-27 | 2022-09-20 | 东风柳州汽车有限公司 | Reversing light switch and automobile |
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| CN104838464A (en) * | 2012-11-16 | 2015-08-12 | 日立汽车系统株式会社 | Electromagnetic switch |
| CN204901854U (en) * | 2015-06-12 | 2015-12-23 | 袁想平 | A device for flame -out protection of cooking utensils |
| CN209561237U (en) * | 2018-12-29 | 2019-10-29 | 广东机电职业技术学院 | A kind of electronic arc eliminating automobile electromagnetic switch |
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- 2018-12-29 CN CN201811640872.9A patent/CN109686603A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2211500Y (en) * | 1995-04-04 | 1995-11-01 | 杜正义 | Electronic breaking-off device of non-contact initiator for vehicle |
| CN1412423A (en) * | 2001-10-09 | 2003-04-23 | 田乃信 | Automatic identification ignition switch for motor vehicle |
| CN2654882Y (en) * | 2003-09-05 | 2004-11-10 | 重庆宗申技术开发研究有限公司 | Anti-theft ignitor for motorcycle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115083803A (en) * | 2022-06-27 | 2022-09-20 | 东风柳州汽车有限公司 | Reversing light switch and automobile |
| CN115083803B (en) * | 2022-06-27 | 2024-03-29 | 东风柳州汽车有限公司 | Reversing light switch and automobile |
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