CN202872709U - A fan control system of an electric vehicle - Google Patents
A fan control system of an electric vehicle Download PDFInfo
- Publication number
- CN202872709U CN202872709U CN2012204583161U CN201220458316U CN202872709U CN 202872709 U CN202872709 U CN 202872709U CN 2012204583161 U CN2012204583161 U CN 2012204583161U CN 201220458316 U CN201220458316 U CN 201220458316U CN 202872709 U CN202872709 U CN 202872709U
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- Prior art keywords
- fan
- control system
- module
- motor
- fan control
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- 238000004891 communication Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004804 winding Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model relates to a fan control system of an electric vehicle. The fan control system comprises a power supply system, a heat dissipating fan, a fan motor, a power driving module, and a microcontroller MCU module. The fan motor is electrically connected with the power driving module and the start and stop of the fan motor is controlled by the power driving module. The microcontroller MCU module is electrically connected with the power driving module. The fan control system is characterized in that the fan motor is a DC brushless motor. The fan control system employs DC brushless Hall-free technology so that cost of Hall devices is saved and system reliability can be effectively increased.
Description
Technical field
The present invention relates to a kind of control system, especially a kind of vehicle radiator control of Fan Motor system.
Background technology
The radiator fan motor of using on present traditional bus mostly has been greatly the Hall brushless dc permanent magnet motor, on the motor processing technology, Hall is equipped with strict demand, and also there is flimsy phenomenon in hall device, in case hall device damages, motor just can not be worked, these factors must make production cost, maintenance cost increase, and reliability reduces.
The utility model content
In order to address the above problem, the utility model provides a kind of dc brushless motor without the Hall control system.
The technical scheme that addresses the above problem that the utility model provides is:
A kind of electric automobile fan control system comprises power-supply system, radiator fan, fan electromotor, power driver module, microcontroller module, the CAN communication module, described fan electromotor and power driver module electrical connection are by the operation of power driver module fan motor; Described microcontroller module and the electrical connection of described power driver module is characterized in that described fan electromotor is dc brushless motor.
Also comprise a counter electromotive force detection circuit module in the described system, it links to each other with the fan electromotor electricity on the one hand, links to each other with the Micro-processor MCV electricity on the other hand.
Also comprise a CAN communication module in the described system, described CAN communication module links to each other with Micro-processor MCV, is used for obtaining the target heat generating member temperature information that sends from the CAN bus, and sends to Micro-processor MCV.
The beneficial effects of the utility model are, adopt the DC brushless Hall technology, save the hall device cost, can the Effective Raise system reliability.
Description of drawings
Fig. 1 is the utility model electric automobile control of Fan Motor system construction drawing.
The 1st, CAN bus communication module, the 2nd, Micro-processor MCV, the 3rd, power driving circuit, the 4th, dc brushless motor, the 5th, counter electromotive force detection circuit.
Wherein Micro-processor MCV is the core of control system, can will send the fan start stop command to fan-driving module after the processes temperature signal that receive.Of the present utility model being characterised in that uses dc brushless motor to replace traditional brush motor, improves system reliability, reduces cost.
This control system also includes CAN bus communication module 1, and CAN bus communication module 1 links to each other with car load CAN bus communication, is used for obtaining target heat generating member temperature information on the CAN bus, and sends to Micro-processor MCV;
For guaranteeing the accurate work of dc brushless motor, also include a counter electromotive force detection circuit in this control system, this counter electromotive force detection circuit mainly is after brushless electric machine rotates, gather the back-emf signal of brushless electric machine, obtain the back-emf zero crossing through treatment circuit, and giving MCU with this crossover point signal, MCU is processed to control the motor commutation after receiving zero cross signal.
Power driving circuit is made of Intelligent Power Module, and than traditional separate type circuit, the failure rate of this circuit can reduce greatly.
In the radiator fan motor control method of the present invention, adopt without the Hall control technology, i.e. during brushless DC permanent-magnet motor operation, the p-m rotor magnetic pole is inducted in the every phase armature winding of stator and is the back electromotive force of trapezoidal wave; Driving voltage is quasi-retangular wave, and armature supply is trapezoidal wave, and the armature winding commutation is 6 times in the air gap scope of 360 degree electrical degrees, and each conducting state continues 60 degree electrical degrees, thereby forms six step great-jump-forward rotating magnetic fields in the air gap scope of 360 degree electrical degrees; For the threephase armature winding of star-like connection, in any moment in running, only has the two-phase energising, a phase no power; The back electromotive force of every phase and phase current homophase.In each state, one phase armature winding is connected to positive voltage, another phase armature winding is connected to negative supply voltage, third phase armature winding is cold unsettled phase, a zero crossing will appear in unsettled back electromotive force in mutually, zero crossing appears at the centre of adjacent twice commutation, when invariablenes turning speed, or in the situation that rotating speed slowly changes, putting zero crossing institute elapsed time from some commutations equals from this zero crossing to next commutation point institute elapsed time, namely at the front and back of zero crossing 30 degree electrical degree place armature winding twice commutation carried out respectively in front and back, the detection of zero crossing is to realize the basis that commutation drives without the Hall brushless dc permanent magnet motor.When detect unsettled mutually in the zero crossing of back electromotive force, then send a signal through 30 degree electrical degree corresponding times of displacement more backward, and go to realize the driving of motor with this signal.
Claims (3)
1. an electric automobile fan control system comprises power-supply system, radiator fan, and fan electromotor, power driver module, the microcontroller module, described fan electromotor and power driver module are electrically connected, by the operation of power driver module fan motor; Described microcontroller module and described power driver module are electrically connected, and it is characterized in that, described fan electromotor is dc brushless motor.
2. electric automobile fan control system according to claim 1 is characterized in that, also comprises a back electromotive force detection module in the described system, and it is electrically connected with fan electromotor on the one hand, is electrically connected with Micro-processor MCV on the other hand.
3. electric automobile fan control system according to claim 1, it is characterized in that also comprise a CAN communication module in the described system, described CAN communication module links to each other with Micro-processor MCV, be used for obtaining the temperature information that transmits from the CAN bus, and send to Micro-processor MCV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204583161U CN202872709U (en) | 2012-09-10 | 2012-09-10 | A fan control system of an electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204583161U CN202872709U (en) | 2012-09-10 | 2012-09-10 | A fan control system of an electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202872709U true CN202872709U (en) | 2013-04-10 |
Family
ID=48039394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204583161U Expired - Fee Related CN202872709U (en) | 2012-09-10 | 2012-09-10 | A fan control system of an electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202872709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382243A (en) * | 2016-11-01 | 2017-02-08 | 爱美达（上海）热能系统有限公司 | Fan air volume compensation algorithm based on constant back electromotive force control |
| CN107338961A (en) * | 2016-12-27 | 2017-11-10 | 浙江孚盾智能科技有限公司 | A kind of high frequency concrete vibration bar |
-
2012
- 2012-09-10 CN CN2012204583161U patent/CN202872709U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382243A (en) * | 2016-11-01 | 2017-02-08 | 爱美达（上海）热能系统有限公司 | Fan air volume compensation algorithm based on constant back electromotive force control |
| CN106382243B (en) * | 2016-11-01 | 2019-02-05 | 爱美达（上海）热能系统有限公司 | Fan air volume compensation algorithm based on constant back electromotive force control |
| CN107338961A (en) * | 2016-12-27 | 2017-11-10 | 浙江孚盾智能科技有限公司 | A kind of high frequency concrete vibration bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |