CN204392126U - The brushless rain shaving electrical machine of automobile-used automatically controlled low-voltage direct - Google Patents
The brushless rain shaving electrical machine of automobile-used automatically controlled low-voltage direct Download PDFInfo
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- CN204392126U CN204392126U CN201520052731.0U CN201520052731U CN204392126U CN 204392126 U CN204392126 U CN 204392126U CN 201520052731 U CN201520052731 U CN 201520052731U CN 204392126 U CN204392126 U CN 204392126U
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- 239000008358 core component Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
The brushless rain shaving electrical machine of a kind of automobile-used automatically controlled low-voltage direct, tach signal, reset signal are connected with described auxiliary control microprocessor intelligence control circuit by Hall element signal acquisition circuit; Operation control command is connected with described auxiliary control microprocessor intelligence control circuit; Described auxiliary control microprocessor intelligence control circuit, over-current signal are connected with described control executive circuit; Described control executive circuit is connected with the general operation circuit of brushless electric machine.Good effect of the present utility model: this device operating current is low, efficiency is high, without any contact brush, can carry out stepless speed regulation easily and speed stabilizing controls.Substantially increase manipulation characteristic and the useful life of automobile-used rain shaving electrical machine.
Description
Technical field
The utility model relates to car electrics technical field, and particularly a kind of car load power supply is plant the brushless rain shaving electrical machine adopting electronic location, electronic commutation and electric drive control technology in the automotive type of 14V or 28V.
Background technology
The rain shaving electrical machine used in the domestic automobile vehicle that all car load power supplys of current China are 14V or 28V is brush motor, its fatal weakness is that commutation carbon brush and the wearing and tearing of output reset brush, spark ablation and loose contact etc. make electrical machinery life shorten dramatically, and reset reliability greatly reduces.Meanwhile, large, the power consumption of this motor noise, temperature rise.
Utility model content
Technical problem to be solved in the utility model is had by original automobile-used low-voltage direct brush rain shaving electrical machine to change the brushless rain shaving electrical machine of automobile-used automatically controlled low-voltage direct into; under original profile and the constant prerequisite of installation dimension, the drive plate be made up of primary electronic component such as brushless electric machine dedicated control device, auxiliary control microprocessor and power drive pipes forms one together with stator winding, magnet rotor, reset signal sensor-based system can carry out speed governing, speed stabilizing, interval and shut down the brushless rain shaving electrical machine of automobile-used low-voltage direct resetted.
The brushless rain shaving electrical machine of a kind of automobile-used automatically controlled low-voltage direct, comprises power supply circuit, controls the general operation circuit of executive circuit, Hall element signal acquisition circuit, auxiliary control microprocessor intelligence control circuit and brushless electric machine; Control executive circuit to comprise overcurrent protection, intermittently, brake and speeds control; The general operation circuit of brushless electric machine comprises magnetic pole position sensor, with brushless electric machine dedicated control device be core component Drive and Control Circuit and power driving circuit;
Tach signal, reset signal are connected with described auxiliary control microprocessor intelligence control circuit by Hall element signal acquisition circuit; Operation control command is connected with described auxiliary control microprocessor intelligence control circuit; Described auxiliary control microprocessor intelligence control circuit, over-current signal are connected with described control executive circuit; Described control executive circuit is connected with the general operation circuit of brushless electric machine.
Described control executive circuit is connected with the general operation circuit of brushless electric machine, specifically refer to: described control executive circuit, described magnetic pole position sensor are connected with described brushless electric machine dedicated control device, described brushless electric machine dedicated control device is connected with motor stator winding by described power driving circuit.
Good effect of the present utility model: this device operating current is low, efficiency is high, without any contact brush, can carry out stepless speed regulation easily and speed stabilizing controls.Substantially increase manipulation characteristic and the useful life of automobile-used rain shaving electrical machine.
Accompanying drawing explanation
Fig. 1 is electrical principle block diagram of the present utility model.
Fig. 2 is power supply circuit figure of the present utility model.
Fig. 3 be control executive circuit figure of the present utility model (overcurrent protection, intermittently, brake and speeds control).
Fig. 4 is Hall element signal acquisition circuit of the present utility model, comprises reset signal figure and tach signal figure.
Fig. 5 is auxiliary control microprocessor (CPU) intelligent control circuit of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing 1 is automobile-used automatically controlled low-voltage direct brushless rain shaving electrical machine electrical principle block diagram.
Accompanying drawing 2 is power unit circuit diagram, is made up of, provides 12V, 5V stabilized voltage power supply and main line current sampling signal current sampling resistor, signal amplification circuit and auxiliary control microprocessor and brushless electric machine dedicated control device voltage stabilizing circuit.
Accompanying drawing 3 is overcurrent protection, brake and the executive circuit of speeds control, is made up of 4011 and signal fusing circuit.After this circuit respective input receives over-current signal (/OVC), reset signal (/FR) and speed control signal (PWM), execution control signal is delivered to the respective input of special integrated circuit, reach the object controlling motor and run.
The signal acquisition circuit that accompanying drawing 4 is formed for Hall element, in figure, the left side is windscreen wiper position reset signal Acquisition Circuit, and the right is motor speed signal Acquisition Circuit.Above-mentioned signal acquisition circuit carries out windscreen wiper brake control for auxiliary control microprocessor and speed closed loop controls to provide digital signal.
The intelligent control circuit that accompanying drawing 5 is is core component with auxiliary control microprocessor (CPU).After the operation control command of wiper hand switch received by auxiliary control microprocessor; it can be studied and judged according to the rotating speed of Hall element collection, reset signal; send reset signal (/FR) and speed control signal (PWM) to control executive circuit; then action command signal is sent to control the operation of motor by control executive circuit to control module special; last auxiliary control microprocessor is revised action command in real time according to feedback signal; implement closed-loop control, thus complete the accurate manipulation that motor speed, speed stabilizing, shutdown are resetted.
The brushless rain shaving electrical machine of the automobile-used automatically controlled low-voltage direct of one described in the utility model, comprise power supply circuit (containing overcurrent sample circuit), control executive circuit (comprise overcurrent protection, intermittently, brake and speeds control), the general operation circuit of Hall element signal acquisition circuit, auxiliary control microprocessor intelligence control circuit and brushless electric machine (comprising magnetic pole position sensor, with brushless electric machine dedicated control device be core component Drive and Control Circuit and power driving circuit).
As shown in Figure 2; the sample resistance be made up of two 0.47 Ohmic power resistor coupled in parallel is connected in main current supply circuit; when electric current meets or exceeds set protection value, this ohmically pressure drop can make PNP transistor conducting, and then makes NPN transistor base stage obtain conducting voltage.NPN transistor output "/OVC " is connected with the over-current signal input "/OVC " controlled in executive circuit (accompanying drawing 3).Input voltage is reduced to 12V and is powered to control module special and accessory circuit thereof by regulator block 7812.In addition, 12V voltage is also as the input voltage of regulator block 7805, and the 7805 5V voltage VCC exported power to the supply terminals indicating VCC in auxiliary control microprocessor intelligence control circuit (accompanying drawing 5).
Shown in accompanying drawing 3 control executive circuit (overcurrent protection, intermittently, brake and speeds control) in, CD4011BM be 42 input with non-buffered B series gate chips, U9A, U9B, U9C, U9D are respectively four 2 input nand gates in this chip.In figure by these four gate circuits build circuit operation logic be: be in the prerequisite of reset mode at circuit under, if "/OVC " holds vanishing level, then "/OVCR " end must be zero level, and final " RUN " holds must be high level.In figure, " ON/OFF " end is connected with " ON/OFF " pin of motor control module special, and control logic is that " ON/OFF " end runs for motor during high level, is motor stalling during zero level.When motor main current supply circuit electric current exceedes set protection value; optocoupler action in accompanying drawing 2; photistor conducting; "/OVC " end is zero level; " RUN " is high level, " ON/OFF " transistor turns, makes " ON/OFF " hold as zero level; motor stalling, thus achieve the simple hardware that uses to the quick protection of over current of motor.In figure, "/REST " end is connected with 45 pin (/REST) of auxiliary control microprocessor (accompanying drawing 5); "/REST " signal is reset signal; when when starting shooting or need to reset to logical circuit in overcurrent protection process; auxiliary control microprocessor can provide the reset signal of " negative saltus step "; utilize the transient switching characteristic of electric capacity; by the 2 pin moment zero setting of U9A, circuit is made to get back to initial condition.In figure, " PWM " end is connected with 26 pin (PWM) of auxiliary control microprocessor (accompanying drawing 5), when the operating current of motor is normal, "/OVCR " is in high level all the time, auxiliary control microprocessor, by exporting different pwm signal, to run motor, the accurate control of stall and speed governing.In figure, U9D circuit design is inverter version, and " OVCR " end is connected with 48 pin (OVCR) of auxiliary control microprocessor (accompanying drawing 5), and whether such auxiliary control microprocessor can enter overcurrent protection state by instant identification circuit.After microprocessor obtains entering the signal of protection, can at interval of sending "/REST " reset signal blink, if over current fault is not eliminated, then circuit still maintains overcurrent protection state; If failture evacuation, then normal operating condition got back to by motor, reset signal that microprocessor no longer sends "/REST ".In figure, "/FR " end is connected with 36 pin (/FR) of auxiliary control microprocessor (accompanying drawing 5), " FR " end is connected with motor control module special, microprocessor, by sending "/FR " signal of height varying level, can control the forward and backward of motor easily.
What accompanying drawing 4 provided is two signal acquisition circuits, they be respectively auxiliary control microprocessor carry out windscreen wiper brake control and speed closed loop control digital signal is provided.In figure, the left side is windscreen wiper position reset signal Acquisition Circuit.Be made up of as core component monopole type Hall switch chip SS443,1 pin of SS443 meets positive supply 12V, 2 pin ground connection, and 3 pin are output.10K pull-up resistor is connected between output and positive supply.Rain shaving electrical machine output shaft turbine embeds a small magnet, its magnetic direction is parallel with output shaft, SS443 is arranged on the cover plate directly over magnet, and such turbine often rotates a circle and will obtain a reset signal "/ZERO " at the output of signal acquisition circuit.Reset signal output is connected with 25 pin (/ZERO) of auxiliary control microprocessor (accompanying drawing 5).Microprocessor, according to interval, stall instruction, in conjunction with "/ZERO " signal, makes motor accurately can be parked in original position at every turn.In figure, the right is motor speed signal Acquisition Circuit.Be made up of as core component ambipolar Hall switch chip SS413,1 pin of SS413 meets positive supply 12V, 2 pin ground connection, and 3 pin are output.10K pull-up resistor is connected between output and positive supply.SS413 is contained in the top of rotor magnet, will obtain a tach signal " CNT " when electric machine rotation at the output of signal acquisition circuit.Tach signal output is connected with 19 pin (CNT) of auxiliary control microprocessor (accompanying drawing 5).Microprocessor according to the motor speed signal of CNT feedback, can carry out closed-loop control to motor speed, reaches the object of speed stabilizing.
Accompanying drawing 5 is auxiliary control microprocessor intelligence control circuit, and core component is STM8S207 microprocessor.The reset mouth that in figure, " NRST " end (1 pin) is microprocessor chip self.At motor powered on moment, utilize the transient switching characteristic of electric capacity, VCC is connected to ground instantaneously by 10K resistance, and make 1 pin moment zero setting, microprocessor is resetted." SWIM " (42 pin) is programming port.Four function key interface symbol " KEY DEC ", " KEY INC ", " KEY FOOD ", " KEY PWE " represent " successively decreasing ", " increasing progressively ", " intermittently " and " stall " respectively." LED POW ", " LED CLK ", " LED DAT ", " LED RUN " are seven sections of LED digital-scroll technique interfaces." PB3 ", " PB4 ", " PB5 ", " PB6 ", " PD4 ", " PD5 ", be spare interface.
This device has changed the switch operation of automobile-used rain shaving electrical machine into electronic commutation by original mechanical commutation, change original reduction point brush into reduction point contactless sensing, automobile-usedly have compared with brush rain shaving electrical machine with traditional, the operating current of the brushless rain shaving electrical machine of automobile-used automatically controlled high voltage direct current is low, efficiency is high, non-commutation spark, can carry out stepless speed regulation easily and speed stabilizing controls, useful life and job stability are greatly improved.
Claims (2)
1. the brushless rain shaving electrical machine of automobile-used automatically controlled low-voltage direct, is characterized in that: comprise power supply circuit, control the general operation circuit of executive circuit, Hall element signal acquisition circuit, auxiliary control microprocessor intelligence control circuit and brushless electric machine; Control executive circuit to comprise overcurrent protection, intermittently, brake and speeds control; The general operation circuit of brushless electric machine comprises magnetic pole position sensor, with brushless electric machine dedicated control device be core component Drive and Control Circuit and power driving circuit;
Tach signal, reset signal are connected with described auxiliary control microprocessor intelligence control circuit by Hall element signal acquisition circuit; Operation control command is connected with described auxiliary control microprocessor intelligence control circuit; Described auxiliary control microprocessor intelligence control circuit, over-current signal are connected with described control executive circuit; Described control executive circuit is connected with the general operation circuit of brushless electric machine.
2. the brushless rain shaving electrical machine of the automobile-used automatically controlled low-voltage direct of one according to claim 1, it is characterized in that: described control executive circuit is connected with the general operation circuit of brushless electric machine, specifically refer to: described control executive circuit, described magnetic pole position sensor are connected with described brushless electric machine dedicated control device, described brushless electric machine dedicated control device is connected with motor stator winding by described power driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052731.0U CN204392126U (en) | 2015-01-26 | 2015-01-26 | The brushless rain shaving electrical machine of automobile-used automatically controlled low-voltage direct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052731.0U CN204392126U (en) | 2015-01-26 | 2015-01-26 | The brushless rain shaving electrical machine of automobile-used automatically controlled low-voltage direct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204392126U true CN204392126U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520052731.0U Expired - Fee Related CN204392126U (en) | 2015-01-26 | 2015-01-26 | The brushless rain shaving electrical machine of automobile-used automatically controlled low-voltage direct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204392126U (en) |
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2015
- 2015-01-26 CN CN201520052731.0U patent/CN204392126U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 |
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| CF01 | Termination of patent right due to non-payment of annual fee |