CN209561237U - A kind of electronic arc eliminating automobile electromagnetic switch - Google Patents
A kind of electronic arc eliminating automobile electromagnetic switch Download PDFInfo
- Publication number
- CN209561237U CN209561237U CN201822255266.7U CN201822255266U CN209561237U CN 209561237 U CN209561237 U CN 209561237U CN 201822255266 U CN201822255266 U CN 201822255266U CN 209561237 U CN209561237 U CN 209561237U
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- Prior art keywords
- contact
- resistor
- motor
- switch
- field effect
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Abstract
The utility model 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 utility model 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 utility model 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.
Utility model content
The main purpose of the utility model is to propose that a kind of structure is simply opened with the electronic arc eliminating automobile electromagnetic of reliable operation
Close, it is intended to eliminate contact contact surface contact or disconnect generate electric arc ablated surface, improve automobile electromagnetic switch reliable operation and
Service life.
To achieve the above object, the utility model proposes a kind of electronic arc eliminating automobile electromagnetic switch, battery and first
Contact electrical connection, the battery also successively with ignition switch, hold-in winding and ground connection be connected, sucking coil one end with it is described
Ignition 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,
The integral structure being connected to form by iron core and conductive plate, the outer diameter face are equipped between the hold-in winding and sucking coil
It is cased with reset spring, second contact is also electrically connected with dc motor one end, the other end ground connection of the dc motor,
First contact and second contact are connected with the drain electrode of power field effect pipe and source electrode respectively, the dc motor
The connected parallel circuit being made of first diode, first resistor and second resistance in both ends, the grid of the power field effect pipe
Pole is connected with first resistor, second resistance and capacitor, 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 solutions of the utility model have the advantage that compared with the prior art
Technical solutions of the utility model protect electro-magnet switch inner contact by using electronic arc eliminating mode, effectively improve
The functional reliability of electromagnetic switch and extension service life.
Technical solutions of the utility model disconnect after dc motor completes the starting effect of engine in ignition switch
When, due to the machinery inertial of electromagnetic switch iron core, inner contact disconnects not yet, using the unilateal conduction performance of diode,
The thoroughly electric current of cutting hold-in winding and sucking coil, it is ensured that core field is zero and smoothly completes reset.
Technical solutions of the utility model pass through dc motor both ends parallel connection third diode and the third electricity in engine
Resistance constitutes self inductance current absorption circuit, and the self-induction electric energy for generating dc motor Inside coil is by third diode in third
It is consumed in the form of fever on resistance, to guarantee the functional reliability of dc motor.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be 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 the electronic arc eliminating automobile electromagnetic of the utility model switchs.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The utility model proposes a kind of electronic arc eliminating automobile electromagnetic switches.
Refer to Fig. 2, the battery 1 of the utility model embodiment is electrically connected with the first contact 8, battery 1 also successively with
Ignition switch 2, hold-in winding 3 and ground connection are connected, and 5 one end of sucking coil is connected in conducting wire with ignition switch 2 with hold-in winding 3
Portion's electrical connection, 5 other end of sucking coil are electrically connected with the second contact 9, are equipped between hold-in winding 3 and sucking coil 5 by iron core 4
The integral structure being connected to form with conductive plate 7,4 outer peripheral surface of iron core are cased with reset spring 18, and the second contact 9 is gone back and dc motor
The electrical connection of 6 one end, the other end ground connection of dc motor 6, the first contact 8 and the second contact 9 respectively with power field effect pipe 11
Drain electrode be connected with source electrode, the both ends of dc motor 6 are connected by first diode 17, first resistor 16 and second resistance 15
The grid of the parallel circuit of composition, power field effect pipe 11 is connected with first resistor 16, second resistance 15 and capacitor 14, directly
The both ends of galvanic electricity 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 utility model embodiment 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 is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the design of the utility model, equivalent structure transformation made based on the specification and figures of the utility model, or
Directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
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 dc motor 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 |
|---|---|---|---|
| CN201822255266.7U CN209561237U (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 |
|---|---|---|---|
| CN201822255266.7U CN209561237U (en) | 2018-12-29 | 2018-12-29 | A kind of electronic arc eliminating automobile electromagnetic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209561237U true CN209561237U (en) | 2019-10-29 |
Family
ID=68306205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822255266.7U Expired - Fee Related CN209561237U (en) | 2018-12-29 | 2018-12-29 | A kind of electronic arc eliminating automobile electromagnetic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209561237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686603A (en) * | 2018-12-29 | 2019-04-26 | 广东机电职业技术学院 | A kind of electronic arc eliminating automobile electromagnetic switch |
| CN112768274A (en) * | 2021-01-15 | 2021-05-07 | 常熟开关制造有限公司(原常熟开关厂） | Active arc extinguishing method and device, circuit breaker and automatic transfer switch |
-
2018
- 2018-12-29 CN CN201822255266.7U patent/CN209561237U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686603A (en) * | 2018-12-29 | 2019-04-26 | 广东机电职业技术学院 | A kind of electronic arc eliminating automobile electromagnetic switch |
| CN112768274A (en) * | 2021-01-15 | 2021-05-07 | 常熟开关制造有限公司(原常熟开关厂） | Active arc extinguishing method and device, circuit breaker and automatic transfer switch |
| CN112768274B (en) * | 2021-01-15 | 2021-10-01 | 常熟开关制造有限公司(原常熟开关厂） | Active arc extinguishing method and device, circuit breaker and automatic transfer switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20211229 |