CN202545088U - Starter-protecting relay - Google Patents
Starter-protecting relay Download PDFInfo
- Publication number
- CN202545088U CN202545088U CN2012201297740U CN201220129774U CN202545088U CN 202545088 U CN202545088 U CN 202545088U CN 2012201297740 U CN2012201297740 U CN 2012201297740U CN 201220129774 U CN201220129774 U CN 201220129774U CN 202545088 U CN202545088 U CN 202545088U
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Abstract
The utility model discloses a starter-protecting relay which comprises a constant-current input circuit module, a delay circuit module, an isolation circuit module, a drive circuit module and an output circuit module, all of which are electrically connected in sequence, wherein the delay circuit module comprises an RC ( resistance-capacitance) circuit, a diode and a NOT gate; the isolation circuit module comprises an oscillating circuit and a transformer which is coupled with the oscillating circuit; the drive circuit module comprises a field-effect tube, an overheat protector and a first RCD (residual current device) circuit; a Metal oxide semiconductor field effect transistor (MOSFET) is adopted as the field effect transistor; and the output circuit module comprises a second RCD (residual current device) circuit an output end of which is electrically connected with a starter. According to the utility model, the starter is effectively protected by the mode of limiting starting time of each time.
Description
Technical field
The utility model relates to the relay technical field, relates to a kind of start protection relay that is used for the commercial car starter motor in particular.
Background technique
At present; China's commercial car starter motor rate of fault can be in any more always, and its main cause is that electrical equipment itself is of low quality on the one hand, is because China's Environmental Conditions is complicated on the other hand; Starter motor overburdening during the part engine start; Due to the long-time energising, therefore need protect, break down because of misoperation preventing starter.
The model utility content
The utility model is exactly a kind of start protection relay that provides in order to address the above problem, and through the mode that limits the single starting time starter motor is effectively protected.
The utility model is to adopt following technological scheme to realize above-mentioned purpose: a kind of start protection relay, it is characterized in that, comprise be electrically connected successively with lower module:
The input circlult module, this input circlult module is a [constant;
The delay circuit module; Comprise a RC circuit, a diode and a not gate, this RC circuit includes the resistance R 1 and resistance R 2 and capacitor C 1 of two series connection, and the output terminal of this not gate is connected between R1 and the R2; The input end of this not gate is the output terminal of this delay circuit module; This diode is parallelly connected with resistance R 1, and the connection of the output terminal of the anodal AND NOT gate of this diode, and the negative pole of this diode is connected with the input end of delay circuit module;
The buffer circuit module comprises the transformer of a vibrator circuit and and its coupling, and this vibrator circuit is that both-end is recommended self excited oscillation circuit, and the secondary winding of this transformer is the output terminal of this buffer circuit module;
Drive circuit module; Comprise a field effect transistor, overheat protector and a RCD circuit; This field effect transistor is isolated gate FET (MOSFET); The grid of this field effect transistor and source electrode are parallelly connected with the electric capacity of a RCD circuit, and the drain electrode of this field effect transistor is the output terminal of this drive circuit module, and this overheat protector is connected with the drain electrode of this field effect transistor;
The output circuit module comprises the 2nd RCD circuit, and the output terminal of the 2nd RCD circuit is electrically connected with starter.
As further specifying of such scheme:
Preferably, said field effect transistor is a N ditch depletion field effect transistor.
Preferably; Said vibrator circuit includes inductance L 1, inductance L 2, capacitor C 2, capacitor C 3, resistance R 3, resistance R 4, triode V1 and triode V2; This inductance L 1 is connected with the collector electrode of triode V1, and this inductance L 2 is connected with the collector electrode of triode V2, the inductance L 1 after the series connection, triode V1 and connect after inductance L 2, triode V2 parallel connection; Capacitor C 2 is connected with the base stage of triode V2 with resistance R 3 parallel connection backs one end; The other end is connected with the collector electrode of triode V1, and capacitor C 3 is connected with the base stage of triode V1 with resistance R 4 parallel connection backs one end, and the other end is connected with the collector electrode of triode V2.
Preferably, said inductance L 2 is the primary air of said transformer.
Preferably, a said RCD circuit includes resistance R parallel with one another 6, capacitor C 4 and reference diode ZD.
Preferably, said drive circuit module also includes a current-limiting resistance R5, and this resistance R 5 is connected with a RCD circuit.
Preferably, said the 2nd RCD circuit includes resistance R parallel with one another 7, capacitor C 5 and diode D2.
The beneficial effect that the utility model adopts above technological scheme to reach is:
1. the described start protection relay of the utility model is effectively protected starter motor through the mode of restriction single starting time, can prolong the life-span of starter motor on the one hand, can avoid the generation of burning wire harness, burning serious accidents such as storage battery in addition on the one hand.
2. the described start protection relay of the utility model starts no time lag restriction once more; Repeatedly starting does not have the number of times restriction yet; Can satisfy starting demand in emergency circumstances; Can under the prerequisite of the operating habit that does not change the user, protect, prevent to cause starter motor to burn because of long-time energising to starter motor.
Description of drawings
Fig. 1 is the theory diagram of the said start protection relay of the utility model;
Fig. 2 is the delay circuit schematic diagram of the said start protection relay of the utility model;
Fig. 3 is the buffer circuit schematic diagram of the said start protection relay of the utility model;
Fig. 4 is the drive circuit schematic diagram of the said start protection relay of the utility model;
Fig. 5 is the output circuit schematic diagram of the said start protection relay of the utility model.
Embodiment
For further setting forth the 26S Proteasome Structure and Function of the utility model, below in conjunction with accompanying drawing and preferred embodiment the utility model is elaborated, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.
Fig. 1 to Fig. 5 is the relevant drawings of the utility model; Fig. 1 is the theory diagram of the said start protection relay of the utility model, and shown in figure, the working principle of the described start protection relay of the utility model is: when input control voltage is added to input end; Through delay circuit; Transfer signals to drive circuit through buffer circuit again,, relay is connected by the break-make of drive circuit controlling output circuit; When input signal was removed, drive circuit turn-offed the power tube of output circuit, and relay is turn-offed.
Fig. 2 to Fig. 5 is the circuit theory diagrams of each module of the utility model, shown in figure, the described startup protective relay of the utility model include successively be electrically connected with lower module:
The input circlult module, this input circlult module designs for [constant.
The delay circuit module comprises a RC circuit, a diode and a not gate, and this RC circuit includes the resistance R 1 and resistance R 2 and capacitor C 1 of two series connection; The output terminal of this not gate is connected between R1 and the R2, and the input end of this not gate is the output terminal of this delay circuit module, and this diode is parallelly connected with resistance R 1; And the output terminal of the anodal AND NOT gate of this diode connects; The negative pole of this diode is connected with the input end of delay circuit module, and this delay circuit module reaches time-lag action through capacitor C 1 charging of RC circuit, when capacitor C 1 charging reaches a certain value; The not gate action, diode D1 has clamper and the effect of quickening discharge here.
The buffer circuit module; The transformer that comprises a vibrator circuit and one and its coupling; This vibrator circuit is that both-end is recommended self excited oscillation circuit, and this vibrator circuit includes inductance L 1, inductance L 2, capacitor C 2, capacitor C 3, resistance R 3, resistance R 4, triode V1 and triode V2, and this inductance L 1 is connected with the collector electrode of triode V1; This inductance L 2 is connected with the collector electrode of triode V2; Inductance L 1 after the series connection, triode V1 and connect after inductance L 2, triode V2 parallel connection, capacitor C 2 and resistance R 3 parallel connections afterwards ends are connected with the base stage of triode V2, the other end is connected with the collector electrode of triode V1; Capacitor C 3 is connected with the base stage of triode V1 with resistance R 4 parallel connection backs one end; The other end is connected with the collector electrode of triode V2, and inductance L 2 is the primary air of said transformer, and the secondary winding of this transformer is the output terminal of this buffer circuit module.
Drive circuit module comprises a field effect transistor, overheat protector, a RCD circuit and a current-limiting resistance R5, and this resistance R 5 is connected with a RCD circuit; The one RCD circuit includes resistance R parallel with one another 6, capacitor C 4 and reference diode ZD, and this field effect transistor is a N ditch depletion field effect transistor, and the grid of this field effect transistor and source electrode are parallelly connected with the capacitor C 4 of a RCD circuit; The drain electrode of this field effect transistor is the output terminal of this drive circuit module, and this overheat protector is connected with the drain electrode of this field effect transistor, when voltage is lower than reference diode ZD magnitude of voltage; The electric current resistance R 6 of flowing through, capacitor C 4 plays the voltage regulation filtering effect, and it is open-minded to export stable driven field effect transistor; When turn-offing relay, electric capacity still has electricity, through resistance R 6 discharges; Discharge electric charge; And then the shutoff field effect transistor, the function of said overtemperature protection device is when open circuit fault appears in the field effect pipe, to fuse automatically, thus the output loop of protective relay.
The output circuit module comprises the 2nd RCD circuit, and the 2nd RCD circuit includes resistance R parallel with one another 7, capacitor C 5 and diode D2; The 2nd RCD circuit is to absorb circuit, has peak voltage on the field effect transistor because the leakage inductance of transformer causes, and needs the absorption circuit and sponges peak voltage; The effect of diode D2 is a unilateral conduction; When just field effect transistor broke off, R7 was fallen by diode D2 short circuit, and capacitor C 5 directly is parallel to the drain electrode and the source electrode both sides of field effect transistor; Play the effect that reduces the Vds rate of climb, also just suppressed peak voltage.When the field effect pipe is opened, be the RC circuit, the last electric charge of C5 discharges through R7, and the output terminal of this output module is electrically connected with the input end of starter motor.
After the described start protection relay of the utility model receives activating signal, if input time during T＜R1C1 relay do not work, directly signal is outputed to starter motor through internal circuit.If input time, relay was isolated input signal during T=R1C1, starter motor quits work, thereby reaches the effect of protection starter motor.
Be merely one of the utility model preferred embodiment shown in the utility model the foregoing description and the accompanying drawing; Can not limit to the utility model with this; Under the condition that does not break away from the utility model marrow, any change that those skilled in the art did all belongs to the protection domain of the utility model.
Claims (7)
1. a start protection relay is characterized in that, comprise successively be electrically connected with lower module:
The input circlult module, this input circlult module is a [constant;
The delay circuit module; Comprise a RC circuit, a diode and a not gate, this RC circuit includes the resistance R 1 and resistance R 2 and capacitor C 1 of two series connection, and the output terminal of this not gate is connected between R1 and the R2; The input end of this not gate is the output terminal of this delay circuit module; This diode is parallelly connected with resistance R 1, and the connection of the output terminal of the anodal AND NOT gate of this diode, and the negative pole of this diode is connected with the input end of delay circuit module;
The buffer circuit module comprises the transformer of a vibrator circuit and and its coupling, and this vibrator circuit is that both-end is recommended self excited oscillation circuit, and the secondary winding of this transformer is the output terminal of this buffer circuit module;
Drive circuit module; Comprise a field effect transistor, overheat protector and a RCD circuit; This field effect transistor is isolated gate FET (MOSFET); The grid of this field effect transistor and source electrode are parallelly connected with the electric capacity of a RCD circuit, and the drain electrode of this field effect transistor is the output terminal of this drive circuit module, and this overheat protector is connected with the drain electrode of this field effect transistor;
The output circuit module comprises the 2nd RCD circuit, and the output terminal of the 2nd RCD circuit is electrically connected with starter.
2. start protection relay according to claim 1 is characterized in that, said field effect transistor is a N ditch depletion field effect transistor.
3. start protection relay according to claim 1 and 2; It is characterized in that; Said vibrator circuit includes inductance L 1, inductance L 2, capacitor C 2, capacitor C 3, resistance R 3, resistance R 4, triode V1 and triode V2; This inductance L 1 is connected with the collector electrode of triode V1, and this inductance L 2 is connected with the collector electrode of triode V2, the inductance L 1 after the series connection, triode V1 and connect after inductance L 2, triode V2 parallel connection; Capacitor C 2 is connected with the base stage of triode V2 with resistance R 3 parallel connection backs one end; The other end is connected with the collector electrode of triode V1, and capacitor C 3 is connected with the base stage of triode V1 with resistance R 4 parallel connection backs one end, and the other end is connected with the collector electrode of triode V2.
4. start protection relay according to claim 3 is characterized in that, said inductance L 2 is the primary air of said transformer.
5. start protection relay according to claim 3 is characterized in that, a said RCD circuit includes resistance R parallel with one another 6, capacitor C 4 and reference diode ZD.
6. start protection relay according to claim 3 is characterized in that, said drive circuit module also includes a current-limiting resistance R5, and this resistance R 5 is connected with a RCD circuit.
7. start protection relay according to claim 3 is characterized in that, said the 2nd RCD circuit includes resistance R parallel with one another 7, capacitor C 5 and diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201297740U CN202545088U (en) | 2012-03-30 | 2012-03-30 | Starter-protecting relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201297740U CN202545088U (en) | 2012-03-30 | 2012-03-30 | Starter-protecting relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545088U true CN202545088U (en) | 2012-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201297740U Expired - Lifetime CN202545088U (en) | 2012-03-30 | 2012-03-30 | Starter-protecting relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545088U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362716A (en) * | 2012-03-30 | 2013-10-23 | 广西玉柴机器股份有限公司 | Starting protection relay |
| CN104053259A (en) * | 2013-03-14 | 2014-09-17 | 广西玉柴机器股份有限公司 | High frequency power supply induction heating timing protection device and protection method thereof |
| CN104234905A (en) * | 2013-06-13 | 2014-12-24 | 环旭电子股份有限公司 | Starter protector with delay circuit and delay circuit |
-
2012
- 2012-03-30 CN CN2012201297740U patent/CN202545088U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362716A (en) * | 2012-03-30 | 2013-10-23 | 广西玉柴机器股份有限公司 | Starting protection relay |
| CN103362716B (en) * | 2012-03-30 | 2015-09-02 | 广西玉柴机器股份有限公司 | start protection relay |
| CN104053259A (en) * | 2013-03-14 | 2014-09-17 | 广西玉柴机器股份有限公司 | High frequency power supply induction heating timing protection device and protection method thereof |
| CN104053259B (en) * | 2013-03-14 | 2016-02-24 | 广西玉柴机器股份有限公司 | High frequency electric source induction heating time protector and guard method thereof |
| CN104234905A (en) * | 2013-06-13 | 2014-12-24 | 环旭电子股份有限公司 | Starter protector with delay circuit and delay circuit |
| CN104234905B (en) * | 2013-06-13 | 2016-07-27 | 环旭电子股份有限公司 | There is starter protector and the delay circuit of delay circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |