CN201771655U - Electronic brushless fuel pump for automobile - Google Patents
Electronic brushless fuel pump for automobile Download PDFInfo
- Publication number
- CN201771655U CN201771655U CN2010202995469U CN201020299546U CN201771655U CN 201771655 U CN201771655 U CN 201771655U CN 2010202995469 U CN2010202995469 U CN 2010202995469U CN 201020299546 U CN201020299546 U CN 201020299546U CN 201771655 U CN201771655 U CN 201771655U
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- circuit
- motor
- control unit
- direct current
- fuel pump
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Abstract
The utility model relates to an electronic brushless fuel pump for an automobile, which comprises a shell that is internally provided with a pump body and a DC motor, wherein the DC motor is connected with a control unit; and the electronic brushless fuel pump is characterized in that the control unit comprises a protection circuit which is connected with the motor and is used for guaranteeing the motor to normally run when in failure. The protection circuit is adopted to protect the whole circuit to be safer and more reliable when the circuit has failure.
Description
Technical field
The utility model relates to automotive field, relates in particular to the brushless fuel pump of a kind of electronic vehicle.
Background technique
DC electromotor with brush has very outstanding linear mechanical characteristic, wide speed adjustable range, big detent torque, advantages such as simple control circuit, be applied to every field for a long time always, especially aspect auto parts machinery, there is the brush motor to obtain practical application widely, becomes present leading products.It is the major obstacle that motor performance improves that but the brush of brush motor and commutator are arranged, because mechanical brush and the mandatory of commutator contact, causes its complex structure, poor reliability, the contact resistance that changes, spark, a series of problems such as noise have hindered the raising of motor performance.Therefore seek the practical application technology that a kind of energy substitutes mechanical brush and commutator, become and to break through existing motor general layout and the comprehensive key that improves the direct current generator performance.Along with electronic technology, the develop rapidly of power component technology and high performance magnetic material manufacturing technology becomes the fine trial that substitutes mechanical brush and mechanical commutator by the leading commutation actuation techniques of electronic technology in recent years.
The brushless fuel pump of electronic vehicle generally adopts the principle that detects back-emf and then the rotation of control motor in the prior art.But, generally lack a protective circuit in the prior art, when circuit broke down, direct current generator can't move.
Summary of the invention
For addressing the above problem, the utility model provides a kind of brushless fuel pump of electronic vehicle with circuit failure protection function.
For achieving the above object, the technical solution adopted in the utility model is: the brushless fuel pump of a kind of electronic vehicle, comprise shell, and be provided with the pump housing, direct current motor in the described shell, described direct current motor connects control unit, and described control unit comprises:
Direct current generator connects and detects winding back emf and export the back-emf logic detection and the control circuit of control signal;
An electronic switch that is used to receive control signal and output switching signal,
A decoding circuit that is used for the receiving key signal and realizes decoding function,
An inverter circuit that is connected and exports driving inverter bridge signal with direct current generator with decoding circuit,
Described control unit comprises a protective circuit that is connected with motor and guarantees the normal operation of motor when being used to break down.
Preferred version of the present utility model is, described control unit comprises that also one is connected the self-start circuit of starting electrical machinery when being used for fault with protective circuit.
Technical advantage of the present utility model is: adopt protective circuit, can be when circuit break down, and the protection integrated circuit, safer reliable.
Description of drawings
Fig. 1 is the present embodiment schematic appearance;
Fig. 2 is a present embodiment internal electric module diagram.
Embodiment
With reference to Fig. 1, Fig. 2, present embodiment provides a kind of electronic vehicle brushless fuel pump, comprises oil cap 1, shell 2, stator component 3, rotor part 4, pump housing parts 5, control unit 6.Be provided with the pump housing, direct current motor in the described shell 2, described direct current motor connects control unit 6, and described control unit 6 comprises:
Direct current generator connects and detects winding back emf and export the back-emf logic detection and the control circuit of control signal;
An electronic switch that is used to receive control signal and output switching signal,
A decoding circuit that is used for the receiving key signal and realizes decoding function,
An inverter circuit that is connected and exports driving inverter bridge signal with direct current generator with decoding circuit,
Described control unit 6 comprises a protective circuit that is connected with motor and guarantees the normal operation of motor when being used to break down.
Described control unit 6 comprises that also one is connected the self-start circuit of starting electrical machinery when being used for fault with protective circuit.
Back-emf detects and control mode: the back-emf of brushless direct current motor phase winding is the function of rotor, there is logical relation in the zero passage moment of back-emf constantly with the break-make of main switch, this relation is used for the logic control signal of three-phase main switch, and back-emf method that Here it is realizes the basic ideas of brushless direct current motor position-sensor-free.When motor brings into operation, adopt open loop control mode, by electronic switch input decoding circuit, decipher back control inverter circuit drives motor rotation by the self-starting part.When motor speed reached rating value, electronic switch switched to the back-emf control mode, through control motor operation after the logical process, entered the closed loop control state by back-emf signal.In service at motor, when breaking down, excise by protective circuit, the protection motor normally moves.
Described protective circuit adopts the MC33035 single-chip microcomputer; this single-chip microcomputer has the overcurrent protection output function; utilize the current detecting homophase and the inverting input of 9 and No. 15 pins; form testing circuit; utilizing the fault output function of No. 14 pin; connect the output indicator equipment or directly cut off electrical power, thereby the chip of having protected the undesired electric current of circuit to cause burns incident.
Technician's notice; though the utility model further describes the utility model according to the foregoing description; but invention thought of the present utility model is not limited only to present embodiment, if be based on the variation of the present utility model thought, all in the utility model protection domain.
Claims (2)
1. the brushless fuel pump of electronic vehicle comprises shell, is provided with the pump housing, direct current motor in the described shell, and described direct current motor connects control unit, and described control unit comprises:
Direct current generator connects and detects winding back emf and export the back-emf logic detection and the control circuit of control signal;
An electronic switch that is used to receive control signal and output switching signal,
A decoding circuit that is used for the receiving key signal and realizes decoding function,
An inverter circuit that is connected and exports driving inverter bridge signal with direct current generator with decoding circuit,
It is characterized in that: described control unit comprises a protective circuit that is connected with motor and guarantees the normal operation of motor when being used to break down.
2. the brushless fuel pump of electronic vehicle according to claim 1 is characterized in that: described: described control unit comprises that also one is connected the self-start circuit of starting electrical machinery when being used for fault with protective circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202995469U CN201771655U (en) | 2010-08-20 | 2010-08-20 | Electronic brushless fuel pump for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202995469U CN201771655U (en) | 2010-08-20 | 2010-08-20 | Electronic brushless fuel pump for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201771655U true CN201771655U (en) | 2011-03-23 |
Family
ID=43751501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202995469U Expired - Lifetime CN201771655U (en) | 2010-08-20 | 2010-08-20 | Electronic brushless fuel pump for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201771655U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330675A (en) * | 2011-09-02 | 2012-01-25 | 江门麦加道机电厂有限公司 | Portable electric fuel pump |
| CN104389689A (en) * | 2014-09-28 | 2015-03-04 | 安徽江淮汽车股份有限公司 | Automobile engine fuel oil supply system |
| CN104712481A (en) * | 2014-06-16 | 2015-06-17 | 北京航空航天大学 | Microchannel hot-bubble type fuel injection system |
-
2010
- 2010-08-20 CN CN2010202995469U patent/CN201771655U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330675A (en) * | 2011-09-02 | 2012-01-25 | 江门麦加道机电厂有限公司 | Portable electric fuel pump |
| CN104712481A (en) * | 2014-06-16 | 2015-06-17 | 北京航空航天大学 | Microchannel hot-bubble type fuel injection system |
| CN104712481B (en) * | 2014-06-16 | 2017-01-18 | 北京航空航天大学 | Microchannel hot-bubble type fuel injection system |
| CN104389689A (en) * | 2014-09-28 | 2015-03-04 | 安徽江淮汽车股份有限公司 | Automobile engine fuel oil supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
|
| CX01 | Expiry of patent term |