CN205123630U - Electric motor car drive controller - Google Patents
Electric motor car drive controller Download PDFInfo
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- CN205123630U CN205123630U CN201520553950.7U CN201520553950U CN205123630U CN 205123630 U CN205123630 U CN 205123630U CN 201520553950 U CN201520553950 U CN 201520553950U CN 205123630 U CN205123630 U CN 205123630U
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- operational amplifier
- electric motor
- motor car
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Abstract
The utility model belongs to the technical field of electric vehicle controller and specifically relates to an electric motor car drive controller, including battery, control circuit board, direct current motor with be used for changing the transformer of voltage, the battery carries out voltage conversion rethread control circuit board through the transformer and is connected with direct current motor, control circuit board includes singlechip, signal circuit, protection circuit, power drive circuit, detection circuitry and inverter circuit, signal circuit gives MCU processing with the signal information transmission that provides, the singlechip give -out order, is connected through power drive circuit and inverter circuit this instruction with direct current motor in proper order, inverter circuit produces information and is connected with the singlechip through detection circuitry, and the singlechip feeds back it, the utility model discloses a STM8S903K control chip makes electric vehicle controller have the excellent performance of high performance, low -power consumption, adopts current foldback circuit in addition, the motor normal operating of effectual protection, and economic benefits is good, has very strong practicality simultaneously.
Description
Technical field
The utility model relates to controller for electric vehicle field, especially a kind of electric motor car driving governor.
Background technology
In electric motor car evolution, controller, first brushless motor, storage battery are the key factors of restriction electric motor car development always.The various control signals (as motor position detection signal, brake signal, handle speed-regulating signal, alarm signal etc.) that controller needs the electronic white driving of reception to detect, then regulate and control according to the running of signal to brshless DC motor (BLDCM) received.
At present, the company of most of production electric motor car uses the BLDCM having position-detection sensor, but position transducer not easily installation and maintenance and increase production motor cost; Meanwhile, there is certain magnetic immunity region in Hall element; Secondly too much transmission line makes control system easily be disturbed and reliability reduction; Again, in some rugged environment, position transducer is easy to malfunctioningly cause traffic accident.Use induction less brush-less DC MOTOR CONTROL if change into, can motor cost be reduced, improve the reliability of controller.For sensorless brushless DC motor, utilize Software for Design to realize the startup of motor, determine the timely commutation in the position of rotor.Its chip STM32 selected is expensive, if it is as electric motor car main control chip, its many function does not all use.This not only improves controller cost and also result in certain wasting of resources.
Utility model content
For the deficiency that prior art exists, the utility model provides that a kind of system configuration is simple, high-performance, low-power consumption based on STM8S903K electric motor car driving governor.
For achieving the above object, the utility model realizes by the following technical solutions: a kind of electric motor car driving governor, and it comprises storage battery, control circuit board, direct current machine and the transformer for changing voltage; Described storage battery is carried out voltage transitions through transformer and is connected with direct current machine by control circuit board; Described control circuit board comprises single-chip microcomputer, signal circuit, protective circuit, power driving circuit, testing circuit and inverter circuit; Thered is provided signal message is transferred to single-chip microcomputer process by described signal circuit, and single-chip microcomputer sends instruction, this instruction is connected with direct current machine with inverter circuit through power driving circuit successively; Described protective circuit is connected with single-chip microcomputer, and described inverter circuit generation information after testing circuit is connected with single-chip microcomputer, and single-chip microcomputer feeds back it.
Further, described signal circuit comprises brake signal, handle signal and power-assisted signal.
Further, described protective circuit comprises under-voltage protection, anti-theft protection and overcurrent protection, and described under-voltage protection and anti-theft protection produce reaction and be connected with mistake current circuit through single-chip microcomputer.
Further, described testing circuit comprises current detecting and back electromotive force detection.
Further, described current foldback circuit comprises the first operational amplification circuit and the second operational amplification circuit, the first resistance and the second resistance, and described first operational amplification circuit successively the first resistance is connected with the second operational amplification circuit with the second resistance.
Further, described first operational amplification circuit comprises the first operational amplifier, the 3rd resistance and the 4th resistance, described 3rd resistance one end is connected with the positive power source terminal of the first operational amplifier, the described 3rd resistance other end is connected with the electrode input end of the first operational amplifier and the 4th resistance one end respectively, the described 4th resistance other end is connected with the negative electricity source of the first operational amplifier and ground connection, and the negative input of described first operational amplifier is connected with the first resistance.
Further, described second operational amplification circuit comprises the second operational amplifier, the 5th resistance, the 6th resistance, the 7th electric group and electric capacity; Described 5th resistance one end is connected with the positive power source terminal of the second operational amplifier, the described 5th resistance other end is connected with the second resistance and the second operational amplifier electrode input end respectively, described second operational amplifier negative input is connected with the output of the second operational amplifier with through the 7th resistance through the 6th grounding through resistance respectively, the output of described second operational amplifier also connects through capacity earth, the negative power supply end ground connection of described second operational amplifier.
Further, described single-chip microcomputer adopts STM8S903K control chip.
Owing to adopting technique scheme, the utility model adopts STM8S903K control chip, makes controller for electric vehicle have the excellent properties of high-performance, low-power consumption; adopt current foldback circuit in addition; the motor of effective protection normally runs, good in economic efficiency, has very strong practicality simultaneously.
Accompanying drawing explanation
Fig. 1 is controller system structural representation of the present utility model;
Fig. 2 is the circuit overcurrent protection schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, a kind of electric motor car driving governor, it comprises storage battery 9, control circuit board, direct current machine 16 and the transformer 10 for changing voltage; Storage battery 9 is carried out voltage transitions through transformer 10 and is connected with direct current machine 16 by control circuit board; Control circuit board comprises single-chip microcomputer 1, signal circuit 2, protective circuit, power driving circuit 11, testing circuit 17 and inverter circuit 15; Thered is provided signal message is transferred to single-chip microcomputer 1 and processes by signal circuit 2, and single-chip microcomputer 1 sends instruction, this instruction is connected with direct current machine 16 with inverter circuit 15 through power driving circuit 11 successively; Protective circuit is connected with single-chip microcomputer, inverter circuit 15 produce information after testing circuit 17 be connected with single-chip microcomputer 1, single-chip microcomputer 1 feeds back it.Wherein signal circuit 2 comprises brake signal 3, handle signal 4 and power-assisted signal 5.Protective circuit comprises under-voltage protection 6, anti-theft protection 7 and overcurrent stream protection 12, and under-voltage protection 6 and anti-theft protection 7 produce reaction and be connected with overcurrent protection 12 through single-chip microcomputer 1, and testing circuit 17 comprises current detecting 13 and back electromotive force detects 14.
Be 5V, 15V by the 48V voltage step-down of storage battery 9, supply single-chip microcomputer 1 and power driving circuit 11 respectively.The handle signal 4 that single-chip microcomputer 1 receives according to A/D conversion port and power-assisted signal 5, the PWM waveform producing three tunnel appropriate frequency passes to power driving circuit 11, signal carries out shaping by power drive road 11, amplify after control the running of brshless DC motor 16.For the direct current machine 16 of position-sensor-free, system obtains back electromotive force zero-crossing by hardware, and the position of the method determination rotor of software delay, realizes automatic phase-detecting commutation.If the l/O port that electric motor car runs over middle single-chip microcomputer 1 can stop when receiving brake signal 3, overcurrent protection 12, brownout signal 6 producing PWM waveform immediately, make direct current machine 16 stall.This system not only meets a series of function such as battery undervoltage protection 6, overcurrent protection 12, automatically phase-detecting of controller for electric vehicle, and has the plurality of advantages such as structure is simple, reliable and stable, small volume, cost are less.
As shown in Figure 2, current foldback circuit comprises the first operational amplification circuit and the second operational amplification circuit, the first resistance R102 and the second resistance R6, and the first operational amplification circuit successively the first resistance R102 is connected with the second operational amplification circuit with the second resistance R6.First operational amplification circuit comprises the first operational amplifier U5A, the 3rd resistance R7 and the 4th resistance R8,3rd resistance R7 one end is connected with the positive power source terminal of the first operational amplifier U5A, the 3rd resistance R7 other end is connected with the electrode input end of the first operational amplifier U5A and the 4th resistance R8 one end respectively, the 4th resistance R8 other end is connected with the negative electricity source of the first operational amplifier U5A and ground connection, and the negative input of the first operational amplifier U5A is connected with the first resistance R102.
Second operational amplification circuit comprises the second operational amplifier U5B, the 5th resistance R9, the 6th resistance R103, the 7th resistance R104 and electric capacity C11; 5th resistance R9 one end is connected with the positive power source terminal of the second operational amplifier U5B, the 5th resistance R9 other end is connected with the electrode input end of the second resistance R6 and the second operational amplifier U5B respectively, second operational amplifier U5B negative input is connected with the output of the second operational amplifier with through the 7th resistance R104 through the 6th resistance R103 ground connection respectively, the output of the second operational amplifier R104 also through electric capacity C11 grounding connection, the negative power supply end ground connection of the second operational amplifier U5B.
When brshless DC motor just starts, back electromotive force is very little, causes starting current excessive.Excessive and burn out metal-oxide-semiconductor for preventing from flowing through electric current in metal-oxide-semiconductor, need to add overcurrent protection 12 circuit.Not high to the voltage A/D conversion accuracy lower than 0.15V by the chip adopted, amplify so sampled voltage is sent to LM358 operational amplifier.U5B exports to the PB1 (A/D conversion port) of chip after being amplified by sampled voltage, chip judges whether overcurrent by sampled value.Current sample method is for directly sending U5A, a U5A to be voltage comparator by CURRENT.When current is excessive, cause voltage excessive, then U5B output low level, overcurrent protection program starts to protect direct current machine 16.
Further, single-chip microcomputer 1 adopts STM8S903K control chip, and STM8S903K3 control chip is 8 single-chip microcomputers of a superelevation cost performance, has the excellent properties of low price, high-performance, low-power consumption.High with low cost, low-power consumption, reliability herein, be applicable to the controller for electric vehicle of position-sensor-free DC motor control.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. an electric motor car driving governor, it comprises storage battery, control circuit board, direct current machine and the transformer for changing voltage; Described storage battery is carried out voltage transitions through transformer and is connected with direct current machine by control circuit board; It is characterized in that: described control circuit board comprises single-chip microcomputer, signal circuit, protective circuit, power driving circuit, testing circuit and inverter circuit; Thered is provided signal message is transferred to single-chip microcomputer process by described signal circuit, and single-chip microcomputer sends instruction, this instruction is connected with direct current machine with inverter circuit through power driving circuit successively; Described protective circuit is connected with single-chip microcomputer.
2. a kind of electric motor car driving governor according to claim 1, is characterized in that: described signal circuit comprises brake signal, handle signal and power-assisted signal.
3. a kind of electric motor car driving governor according to claim 1, is characterized in that: described protective circuit comprises under-voltage protection, anti-theft protection and overcurrent protection, and described under-voltage protection and anti-theft protection produce reaction and be connected with mistake current circuit through single-chip microcomputer.
4. a kind of electric motor car driving governor according to claim 1, is characterized in that: described testing circuit comprises current detecting and back electromotive force detects.
5. a kind of electric motor car driving governor according to claim 3; it is characterized in that: described current foldback circuit comprises the first operational amplification circuit and the second operational amplification circuit, the first resistance and the second resistance, and the first described operational amplification circuit successively the first resistance is connected with the second operational amplification circuit with the second resistance.
6. a kind of electric motor car driving governor according to claim 5, it is characterized in that: described first operational amplification circuit comprises the first operational amplifier, the 3rd resistance and the 4th resistance, described 3rd resistance one end is connected with the positive power source terminal of the first operational amplifier, the described 3rd resistance other end is connected with the electrode input end of the first operational amplifier and the 4th resistance one end respectively, the described 4th resistance other end is connected with the negative electricity source of the first operational amplifier and ground connection, and the negative input of described first operational amplifier is connected with the first resistance.
7. a kind of electric motor car driving governor according to claim 5, is characterized in that: described second operational amplification circuit comprises the second operational amplifier, the 5th resistance, the 6th resistance, the 7th electric group and electric capacity; Described 5th resistance one end is connected with the positive power source terminal of the second operational amplifier, the described 5th resistance other end is connected with the second resistance and the second operational amplifier electrode input end respectively, described second operational amplifier negative input is connected with the output of the second operational amplifier with through the 7th resistance through the 6th grounding through resistance respectively, the output of described second operational amplifier also connects through capacity earth, the negative power supply end ground connection of described second operational amplifier.
8. a kind of electric motor car driving governor according to claim 3, is characterized in that: described single-chip microcomputer adopts STM8S903K control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553950.7U CN205123630U (en) | 2015-07-29 | 2015-07-29 | Electric motor car drive controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553950.7U CN205123630U (en) | 2015-07-29 | 2015-07-29 | Electric motor car drive controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205123630U true CN205123630U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520553950.7U Expired - Fee Related CN205123630U (en) | 2015-07-29 | 2015-07-29 | Electric motor car drive controller |
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| Country | Link |
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| CN (1) | CN205123630U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461124A (en) * | 2019-07-04 | 2019-11-15 | 诺丁汉(余姚)智能电气化研究院有限公司 | Electric machine controller |
| CN110641606A (en) * | 2019-08-16 | 2020-01-03 | 安徽恒天电子科技有限公司 | Novel low-voltage brushless controller of electric vehicle |
-
2015
- 2015-07-29 CN CN201520553950.7U patent/CN205123630U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461124A (en) * | 2019-07-04 | 2019-11-15 | 诺丁汉(余姚)智能电气化研究院有限公司 | Electric machine controller |
| CN110641606A (en) * | 2019-08-16 | 2020-01-03 | 安徽恒天电子科技有限公司 | Novel low-voltage brushless controller of electric vehicle |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20160330 Termination date: 20170729 |
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| CF01 | Termination of patent right due to non-payment of annual fee |