CN201250737Y - Oil pump driven circuit - Google Patents
Oil pump driven circuit Download PDFInfo
- Publication number
- CN201250737Y CN201250737Y CNU2008200996440U CN200820099644U CN201250737Y CN 201250737 Y CN201250737 Y CN 201250737Y CN U2008200996440 U CNU2008200996440 U CN U2008200996440U CN 200820099644 U CN200820099644 U CN 200820099644U CN 201250737 Y CN201250737 Y CN 201250737Y
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- circuit
- oil pump
- signal
- gate
- electric capacity
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Abstract
The utility model discloses an oil pump driven circuit, comprising a signal-collecting circuit, a signal-forming circuit, and a protection circuit, which is characterized in that the signal-forming circuit is composed of a gate driven circuit and an MOS magnified circuit, wherein start-up direction is obtained by the signal-collecting circuit and is transmitted to the gate driven circuit, the start-up direction is formed by the gate driven circuit and then is transmitted to the MOS magnified circuit which magnifies the start-up direction and start-up signal is generated. The MOS magnified circuit is provided with an on-off pipe, the start-up direction is transmitted by a drain of the on-off pipe to the protection circuit. The oil pump driven circuit has the advantages that the cost is reduced, the heat is low, electric arc is effectively prevented, surge electrical current is reduced and protection measures are strengthened, the oil pump driven circuit provides an effective protection of safe operation of the oil pump. And the oil pump controlling circuit can be equipped outside the ECU, heat-radiating burden of ECU is reduced and the working efficiency of ECU is increased.
Description
Technical field
The utility model belongs to technical field of motorcycles, specifically, is a kind of oil pump drive circuit of motorcycle.
Background technique
The driving mode of oil pump drive circuit mainly contains two kinds at present on the motorcycle with electronic fuel injection system:
A kind of by signal acquisition circuit; signal transformation circuit and protective circuit are formed; wherein signal acquisition circuit obtains the pump start instruction of ECU output and flows to signal transformation circuit; signal transformation circuit instructs shaping to pump start; and send to protective circuit; protective circuit generally adopts relay to realize that signal amplifies, and the direct output signal of relay drives oil pump work.Its shortcoming is: the inrush current of relay is bigger, causes the injury to the oil pump circuit easily, and the relay life-span is short, and the cost height influences the reliability of whole oil pump drive circuit.
Second kind of oil pump drive circuit is that signal acquisition circuit and signal transformation circuit are integrated in the ECU, pump start instruction behind the ECU output Shaping, replace relay as dc switch by semiconductor, output signal drives oil pump work, than first kind of mode, has improved the reliability of whole oil pump drive circuit, but its shortcoming is: adopt integrated chip can take the ECU computational space in ECU, increase the heat radiation burden of ECU, reduce the working efficiency of ECU, and cost is higher.
The model utility content
The purpose of this utility model provides the high oil pump drive circuit of a kind of reliability, and it is low to have a cost, and the characteristics of high safety can be saved the ECU computational space, improves the working efficiency of ECU.
For achieving the above object, the utility model is explained a kind of oil pump drive circuit, by signal acquisition circuit, signal transformation circuit and protective circuit are formed, its key is: described signal transformation circuit is made up of gate drive circuit and metal-oxide-semiconductor amplification circuit, wherein said signal acquisition circuit obtains the pump start instruction and flows to described gate drive circuit, this gate drive circuit instructs shaping to pump start, and send to described metal-oxide-semiconductor amplification circuit, this metal-oxide-semiconductor amplification circuit amplifies described pump start instruction back and generates drive signal, and export this drive signal and give described protective circuit, protective circuit output oil pump drive signal;
Described metal-oxide-semiconductor amplification circuit is provided with switching tube, and the grid of this switching tube connects the output terminal of described gate drive circuit, and source electrode is connected in series ground connection behind first resistance, and the described pump start of drain electrode output instructs to described protective circuit.
Use cheap metal-oxide-semiconductor to do the oil pump driver module, can reduce cost, and can be installed in outside the ECU, save the ECU computational space, reduce ECU heat radiation burden, improve the working efficiency of ECU.
Metal-oxide-semiconductor conducting internal resistance has only tens milliohms, and it is little to generate heat, and can prevent effectively that electric arc from producing.Utilize peripheral devices, also can maximum reduce the generation of inrush current, and increase various safety measure, for the oil pump safe operation provides effective guarantee.
Described gate drive circuit is made up of first not gate and second not gate, and wherein the input end of first not gate receives described pump start instruction, and output terminal connects the input end of described second not gate, and the output terminal of second not gate connects described metal-oxide-semiconductor amplification circuit.
Not circuit is adjusted the waveform of command signal, has strengthened the antijamming capability of circuit, has improved the reliability of signal.
Described signal acquisition circuit is made up of first electric capacity and voltage-stabiliser tube, the negative terminal of first electric capacity and the negativing ending grounding of voltage-stabiliser tube, the anode of first electric capacity and the anode of voltage-stabiliser tube receive described pump start instruction, and export this pump start and instruct to described signal transformation circuit.
Described protective circuit is made up of the output voltage-stabiliser tube and second electric capacity, the negativing ending grounding of the negative terminal of second electric capacity and output voltage-stabiliser tube, and the anode of the anode of second electric capacity and output voltage-stabiliser tube receives described pump start instruction, and output oil pump drive signal.
The antijamming capability of first electric capacity, voltage-stabiliser tube and output voltage-stabiliser tube, the second electric capacity intensifier circuit.
Remarkable result of the present utility model is: provide a kind of stability high oil pump drive circuit, use cheap metal-oxide-semiconductor to do the oil pump driver module, reduced cost, metal-oxide-semiconductor conducting internal resistance has only tens milliohms, and it is little to generate heat, and can prevent effectively that electric arc from producing.Utilize peripheral circuit, reduced the generation of inrush current, and increase various safety measure, for the oil pump safe operation provides effective guarantee.And can be installed in outside the ECU, reduce ECU heat radiation burden, improve the working efficiency of ECU.
Description of drawings
Fig. 1 is the utility model working principle block diagram;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, 2:
A kind of oil pump drive circuit, by signal acquisition circuit 1, signal transformation circuit and protective circuit 2 are formed, wherein, described signal transformation circuit is made up of gate drive circuit 3 and metal-oxide-semiconductor amplification circuit 4, wherein said signal acquisition circuit 1 obtains the pump start instruction and flows to described gate drive circuit 3,3 pairs of pump start instructions of this gate drive circuit shaping, and send to described metal-oxide-semiconductor amplification circuit 4, this metal-oxide-semiconductor amplification circuit 4 amplifies described pump start instruction back and generates drive signal, and export this drive signal and give described protective circuit 2, protective circuit 2 output oil pump drive signals;
Described metal-oxide-semiconductor amplification circuit 4 is provided with switching tube Q, and the grid of this switching tube Q connects the output terminal of described gate drive circuit 3, and source electrode is connected in series first resistance R, 1 back ground connection, and the described pump start of drain electrode output instructs to described protective circuit 2.
Use cheap metal-oxide-semiconductor to do the oil pump driver module, can reduce cost, and can be installed in outside the ECU, save the ECU computational space, reduce ECU heat radiation burden, improve the working efficiency of ECU.
Metal-oxide-semiconductor conducting internal resistance has only tens milliohms, and it is little to generate heat, and can prevent effectively that electric arc from producing.Utilize peripheral devices, also can maximum reduce the generation of inrush current, and increase various safety measure, for the oil pump safe operation provides effective guarantee.
Described gate drive circuit 3 is made up of the first not gate U1 and the second not gate U2, wherein the input end of the first not gate U1 receives described pump start instruction, output terminal connects the input end of the described second not gate U2, and the output terminal of the second not gate U2 connects described metal-oxide-semiconductor amplification circuit 4.
Not circuit is adjusted the waveform of command signal, has strengthened the antijamming capability of circuit, has improved the reliability of signal.When the pump start instruction of ECU output is low level signal, adopt single not gate to drive; When the pump start instruction of ECU output is high level signal, adopt two not gates to drive
Described signal acquisition circuit 1 is made up of first electric capacity and voltage-stabiliser tube, the negative terminal of first electric capacity and the negativing ending grounding of voltage-stabiliser tube, the anode of first electric capacity and the anode of voltage-stabiliser tube receive described pump start instruction, and export this pump start and instruct to described signal transformation circuit.
Described protective circuit 2 is made up of the output voltage-stabiliser tube D5 and second capacitor C 2; the negativing ending grounding of the negative terminal of second electric capacity (C2) and output voltage-stabiliser tube D5; the anode of the anode of second electric capacity (C2) and output voltage-stabiliser tube D5 receives described pump start instruction, and output oil pump drive signal.
The antijamming capability of first electric capacity, voltage-stabiliser tube and output voltage-stabiliser tube D5, second capacitor C, 2 intensifier circuits.
Working principle of the present utility model is:
The pump start instruction of ECU output; through signal acquisition circuit 1 filtering; after eliminating interference; send to gate drive circuit 3; after 3 pairs of command signal shapings of gate drive circuit; sending to metal-oxide-semiconductor amplification circuit 4 amplifies; its amplifying signal is through protective circuit 2 filtering; after eliminating interference, the oil pump drive signal oil pump of output low level, oil pump obtains vehicle power work; simultaneously; drain electrode string at switching tube Q has sustained diode 4 to be connected with the oil pump power supply, be connected in series clamped pipe D3 and drive instantaneous voltage with restriction between switching tube Q grid and drain electrode, protects oil pump safety.
Claims (4)
1, a kind of oil pump drive circuit, by signal acquisition circuit (1), signal transformation circuit and protective circuit (2) are formed, it is characterized in that: described signal transformation circuit is made up of gate drive circuit (3) and metal-oxide-semiconductor amplification circuit (4), wherein said signal acquisition circuit (1) obtains the pump start instruction and flows to described gate drive circuit (3), this gate drive circuit (3) is to pump start instruction shaping, and send to described metal-oxide-semiconductor amplification circuit (4), this metal-oxide-semiconductor amplification circuit (4) amplifies described pump start instruction back and generates drive signal, and export this drive signal and give described protective circuit (2), this protective circuit (2) output oil pump drive signal;
Described metal-oxide-semiconductor amplification circuit (4) is provided with switching tube (Q); the grid of this switching tube (Q) connects the output terminal of described gate drive circuit (3); source electrode is connected in series first resistance (R1) back ground connection, and the described pump start of drain electrode output instructs to described protective circuit (2).
2, oil pump drive circuit according to claim 1, it is characterized in that: described gate drive circuit (3) is made up of first not gate (U1) and second not gate (U2), wherein the input end of first not gate (U1) receives described pump start instruction, output terminal connects the input end of described second not gate (U2), and the output terminal of second not gate (U2) connects described metal-oxide-semiconductor amplification circuit (4).
3, oil pump drive circuit according to claim 1, it is characterized in that: described signal acquisition circuit (1) is made up of first electric capacity (C1) and voltage-stabiliser tube (D1), the negativing ending grounding of the negative terminal of first electric capacity (C1) and voltage-stabiliser tube (D1), the anode of the anode of first electric capacity (C1) and voltage-stabiliser tube (D1) receives described pump start instruction, and exports this pump start and instruct to described signal transformation circuit.
4, oil pump drive circuit according to claim 1; it is characterized in that: described protective circuit (2) is made up of output voltage-stabiliser tube (D5) and second electric capacity (C2); the negativing ending grounding of the negative terminal of second electric capacity (C2) and output voltage-stabiliser tube (D5); the anode of the anode of second electric capacity (C2) and output voltage-stabiliser tube (D5) receives described pump start instruction, and output oil pump drive signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200996440U CN201250737Y (en) | 2008-08-05 | 2008-08-05 | Oil pump driven circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200996440U CN201250737Y (en) | 2008-08-05 | 2008-08-05 | Oil pump driven circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250737Y true CN201250737Y (en) | 2009-06-03 |
Family
ID=40746411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200996440U Expired - Lifetime CN201250737Y (en) | 2008-08-05 | 2008-08-05 | Oil pump driven circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250737Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137859A (en) * | 2020-09-04 | 2022-03-04 | 比亚迪股份有限公司 | Drive controller and drive control circuit of vacuum pump |
-
2008
- 2008-08-05 CN CNU2008200996440U patent/CN201250737Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137859A (en) * | 2020-09-04 | 2022-03-04 | 比亚迪股份有限公司 | Drive controller and drive control circuit of vacuum pump |
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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: 20090603 Effective date of abandoning: 20080805 |