CN207354003U - A kind of water pump DC brushless motor - Google Patents
A kind of water pump DC brushless motor Download PDFInfo
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- CN207354003U CN207354003U CN201721422044.9U CN201721422044U CN207354003U CN 207354003 U CN207354003 U CN 207354003U CN 201721422044 U CN201721422044 U CN 201721422044U CN 207354003 U CN207354003 U CN 207354003U
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Abstract
A kind of water pump DC brushless motor, including brushless electric machine body and controller；The brushless electric machine body includes drive end bearing bracket, rear end cap, stator and hall sensing device；The stator is installed between drive end bearing bracket and rear end cap, and is connected with three-phase input line；The hall sensing device is installed on the stator, and is connected with hall signal terminal, and the controller is located in the brushless electric machine body, and is fixed on the rear end cap, and is electrically connected with the three-phase input line；The hall sensing device is electrically connected by hall signal terminal with the Hall detection apparatus, and hall signal is inputted the Hall detection apparatus is detected；The signal that the MCU master control sets detect the Hall detection apparatus is handled, and control driving device drives the operating and stopping of the brushless electric machine body.The water pump DC brushless motor built in controller, will eliminate space shared by external controller so that system structure is more compact, easily operated.
Description
Technical field
The utility model belongs to power electronics field, more particularly, to a kind of water pump DC brushless motor.
Background technology
With the development of society, living standards of the people increasingly improve, the efficient of the energy is got over using and to environmentally friendly requirement
Carry out higher, national also encouragement development new-energy automobile.New energy bus belongs to public transport, new energy bus
Vehicle water cooling system, be to ensure the key run steadily in the long term of automobile, so the requirement to cooling water pump is very high, it is necessary to protect
Hold operation steady in a long-term, it is desirable to which water pump is small, long lifespan, water absorbing force are big.Permanent-magnet brushless DC electric machine is with hyundai electronics
The Novel machine motor that technical grade new material develops and occurs, it possesses high torque, small, long lifespan, low noise, operation surely
The advantages that determining, meets water pump application requirement very much.Permanent-magnet brushless DC electric machine is needed by controller driving operating, brushless electric machine
Controller is the key of brushless electric machine complete machine steady running.The control of the water pump DC brushless motor of existing new energy bus
Device processed is typically all external, is not easy to the installation of brushless motor controller, and occupied space is big, complicated.
Utility model content
Based on this, the purpose of the utility model is to overcome shortcoming and deficiency of the prior art, there is provided a kind of built-in control
The water pump DC brushless motor of device processed.
The utility model is achieved through the following technical solutions：A kind of water pump DC brushless motor, including brushless electric machine
Body and controller；The brushless electric machine body includes drive end bearing bracket, rear end cap, stator and hall sensing device；The stator peace
Between drive end bearing bracket and rear end cap, and it is connected with three-phase input line；The hall sensing device is installed on the stator, and
It is connected with hall signal terminal；The controller is located in the brushless electric machine body, and is fixed on the rear end cap, and with
The three-phase input line is electrically connected, and the controller includes the MCU master control sets, Hall detection apparatus, driving being electrically connected to each other
Device and supply unit；The hall sensing device is electrically connected by hall signal terminal with the Hall detection apparatus, will suddenly
Your signal inputs the Hall detection apparatus and is detected；The letter that the MCU master control sets detect the Hall detection apparatus
Number handled, control driving device drives the operating and stopping of the brushless electric machine body；The supply unit is used to provide
The power supply of the MCU main control modules.
Relative to the prior art, the water pump DC brushless motor of the utility model, by the way that controller is built in brushless electricity
In machine body, the three-phase input line on stator is electrically connected with the controller, hall sensing device is installed on the stator
On, and hall signal terminal is connected with, hall sensing device passes through hall signal terminal and the MCU master control sets of the controller
It is electrically connected, hall signal is inputted into the MCU master control sets, the signal that MCU master control sets input the Hall detection apparatus
Processing is detected, and controls the operating of driving device driving brushless electric machine.The water pump DC brushless motor by built in controller,
Eliminate the space shared by external controller so that system structure is more compact, easily operated.
Further, the Hall detection apparatus includes hall signal input terminal, divider resistance and the filter being sequentially connected electrically
Ripple capacitance；The hall signal that the divider resistance and filter capacitor input hall signal input terminal is detected processing.This sets
Put for the detection and processing to hall signal.
Further, the controller further includes the current sensing means being electrically connected with the MCU master control sets, for examining
Survey the real-time current of brshless DC motor and sampling；The current sensing means includes sample resistance and the computing being sequentially connected electrically
Amplifier；The sample resistance is sampled the electric current for flowing through it and obtains a sampling current value, and by the sampling current value
It is transported to operational amplifier；The operational amplifier is input to the MCU master controls dress after handling the sampling current value
Put；The MCU master control sets control the operating and stopping of brushless electric machine body according to the size of sampling current value.The setting passes through
The real-time current value that MCU master control sets work according to the brshless DC motor detected is so as to control the operating and stopping of motor.
Further, the MCU master control sets are additionally provided with dry rotation protection current value；The current sensing means detects nothing
First working current value of brush motor body simultaneously samples；The MCU master control sets do first working current value with described
Rotation protection current value compares, and when the first working current value is less than the dry rotation protection current value and certain time is maintained, controls
The brshless DC motor body shuts down, and protects motor.
Further, the MCU master control sets are additionally provided with overcurrent protection value；The current sensing means detects the nothing
Second working current value of brush motor body simultaneously samples；The MCU master control sets by second working current value with it is described
Overcurrent protection value compares, and when the second working current value is more than the overcurrent protection value, controls the brushless electric machine body to stop
Only operate, and restart automatically after a certain time.The setting ensure that brshless DC motor stops operating in high current, protection
Motor.
Further, the controller further includes the temperature-detecting device being electrically connected with the MCU master control sets；The temperature
Spend detection device the temperature of the controller is detected by a thermistor and obtain a probe temperature value, and by the probe temperature
Value changes into voltage signal and is input to MCU master control sets；The MCU master control sets control brushless according to the size of probe temperature value
The operating and stopping of motor body.The setting detects the real-time temperature values of brshless DC motor, so as to be protected to brushless electric machine
Shield control.
Further, the MCU master control sets are additionally provided with the first rated temperature and the second rated temperature, when the temperature
When detection device detects that the temperature of the controller is more than first rated temperature, the MCU master control sets control motor
Shut down；When the temperature-detecting device detects that the temperature of the controller is less than the second rated temperature, the MCU master
Control device control electric motor starting.The setting effectively controls the operating temperature of brshless DC motor, prevent because temperature is excessive and
Damage motor.
Further, the driving device includes the driving chip and power tube being electrically connected to each other；The driving chip bag
Include input terminal and output terminal；The input terminal is used for the control signal for receiving the MCU master control sets；The output terminal is used to control
The switch of the power tube is made, so as to control the operating of the brushless electric machine body.
Further, the supply unit includes protection apparatus preventing reverse connection, pre-charging device and the power supply being sequentially connected electrically
Stable-pressure device；The protection apparatus preventing reverse connection is used to prevent controller power source line positive and negative anodes reversal connection；The pre-charging device is used for
Protect the controller；The power regulator device is used to provide stable operating voltage to the MCU master control sets.
Further, it is provided with capacitor in the controller；The controller power source connects moment to the capacitor
Charging, and produce charging current；The pre-charging device limits the size of the charging current, protects the controller.
In order to better understand and implement, describe the utility model in detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the side view of water pump DC brushless motor described in the utility model.
Fig. 2 is the connection diagram of controller described in the utility model.
Fig. 3 is the schematic diagram of controller described in the utility model.
Fig. 4 is the circuit diagram of MCU master control sets described in the utility model.
Fig. 5 is the circuit diagram of protection apparatus preventing reverse connection described in the utility model.
Fig. 6 is the circuit diagram of pre-charging device described in the utility model.
Fig. 7 is the circuit diagram of power regulator device described in the utility model.
Fig. 8 is drive circuit U circuitry phase figures described in the utility model.
Fig. 9 is drive circuit V circuitry phase figures described in the utility model.
Figure 10 is drive circuit W circuitry phase figures described in the utility model.
Figure 11 is the circuit diagram of Hall detection apparatus described in the utility model.
Figure 12 is the circuit diagram of current sensing means described in the utility model.
Figure 13 is the circuit diagram of temperature-detecting device described in the utility model.
Embodiment
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " hard straight ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the utility model.In the description of the utility model, unless otherwise indicated, " multiple " are meant that two or two
More than a.
Please refer to Fig.1 and Fig. 2, wherein Fig. 1 be water pump DC brushless motor described in the utility model side view；Fig. 2
It is the connection diagram of controller described in the utility model.The water pump DC brushless motor includes brushless electric machine body and control
Device 30；The brushless electric machine body includes drive end bearing bracket, rear end cap 10, stator and hall sensing device；Before the stator is installed on
Between end cap and rear end cap 10, and it is connected with three-phase input line 40；The hall sensing device is installed on the stator, and even
It is connected to hall signal terminal；The controller is located in the brushless electric machine body, and is fixed on the rear end cap, and with institute
Three-phase input line 40 is stated to be electrically connected；The power tube face paste of the controller has thermal conductive silicon adhesive plaster 20.
Referring to Fig. 3, Fig. 3 is the schematic diagram of controller described in the utility model.The controller includes being electrically connected to each other
MCU (Microcontroller Unit) master control set, Hall detection apparatus, current sensing means, temperature-detecting device, drive
Dynamic device and supply unit；The hall sensing device is electrically connected by hall signal terminal 50 with the Hall detection apparatus,
Hall signal is inputted the Hall detection apparatus to be detected；The MCU master control sets detect the Hall detection apparatus
Signal handled, control driving device drives the operating and stopping of the brushless electric machine body；The MCU master control sets pair
The signal of the Hall detection apparatus, current sensing means and temperature-detecting device detection is handled, so as to control the nothing
The operating and stopping of brushless motor, there is provided various protections；The supply unit includes protection apparatus preventing reverse connection, pre-charging device
And power regulator device, for providing the power supply of the MCU master control sets.
Referring to Fig. 4, Fig. 4 is the circuit diagram of MCU master control sets described in the utility model.The MCU master control sets use
STM8AF6246 is main control chip, and STM8AF6246 control chips are the automotive grade control chips of STMicw Electronics, to each inspection
The input signal for surveying device carries out processing with after computing, and output control signal, drives and control the operating and stopping of brushless electric machine.
Referring to Fig. 5, Fig. 5 is the circuit diagram of protection apparatus preventing reverse connection described in the utility model.The anti-reverse protection dress
Put designed for preventing controller from being burnt out due to the reversal connection of power cord positive and negative anodes.After power input voltage, if due to mistake
Reversal connection is caused by mistake, and when the DC voltage of reversal connection is no more than certain voltage value, which will not be burned, so as to protect
Controller.Specifically, in the present embodiment, which is additionally provided with a voltage check device, which is additionally provided with a voltage
Reverse connecting protection value, when voltage check device detects that the DC voltage of reversal connection is no more than the electric voltage reverse-connection protection value of setting,
The controller will not be burned, and specifically, which is 32VDC；The controller is additionally provided with a under-voltage protection
Value, specifically, 18VDC is arranged to by under-voltage protection value, when the voltage value that voltage check device detects is less than 18VDC
When, controller control brshless DC motor body is inoperative；The controller is additionally provided with one and crosses protection value, specifically, incited somebody to action
Pressure protection value is set in 32VDC~50VDC, when the supply voltage that voltage check device detects is less than 50VDC more than 32VDC
When, controller control brushless electric machine body stops operating.
Referring to Fig. 6, Fig. 6 is the circuit diagram of pre-charging device described in the utility model.Electricity is provided with the controller
Container；Moment is connected when controller power source to charge to the capacitor, and produces charging current；The pre-charging device limits institute
The size of charging current is stated, protects the controller.Specifically, the pre-charging device this charging current is limited in certain value
It is interior, capacitor is not burnt out controller component because of the short circuit of moment, so as to protect controller and element.
Referring to Fig. 7, Fig. 7 is the circuit diagram of power regulator device described in the utility model.Using 78M05 three-terminal voltage-stabilizings
Device is to input voltage voltage stabilizing, for providing stable operating voltage to MCU master controls.
Please refer to Fig. 8, Fig. 9 and Figure 10, wherein Fig. 8 is drive circuit U circuitry phase figures described in the utility model, figure
9 be drive circuit V circuitry phase figures described in the utility model, and Figure 10 is drive circuit W circuitry phase figures described in the utility model.
The driving device includes driving chip L6387E and power tube；The driving chip includes input terminal and output terminal；It is described defeated
Enter the control signal that end is used to receive the MCU master control sets；The output terminal is used for the switch for controlling the power tube, so that
The operating of the brushless electric machine body is controlled, there is stronger antijamming capability, realizes the three-phase drive control of brushless electric machine.
Please refer to Fig.1 the circuit diagram that 1, Figure 11 is Hall detection apparatus described in the utility model.The Hall detection dress
Put hall signal input terminal, divider resistance and filter capacitor including being sequentially connected electrically；The divider resistance and filter capacitor pair
The hall signal of hall signal input terminal input is detected processing.
Please refer to Fig.1 the circuit diagram that 2, Figure 12 is current sensing means described in the utility model.The current sensing means
For detecting real-time current and the sampling of brshless DC motor；The current sensing means includes the sample resistance being sequentially connected electrically
And operational amplifier；The sample resistance is sampled the electric current for flowing through it and obtains a sampling current value, and by the sampling
Current value is transported to operational amplifier；The operational amplifier is input to the MCU after handling the sampling current value
Master control set；The MCU master control sets control the operating and stopping of brushless electric machine body according to the size of sampling current value.Specifically
Ground, the MCU master control sets are additionally provided with dry rotation protection current value；The first of the current sensing means detection brushless electric machine body
Working current value simultaneously samples；The MCU master control sets are by first working current value compared with the dry rotation protection current value
Compared with when the first working current value is less than the dry rotation protection current value and certain time is maintained, controlling the brshless DC motor
Body shuts down.In the present embodiment, when MCU master control sets detect that the operating current of brushless electric machine is less than 3.5A, and maintain
During 25S, trigger dry rotation protection and control the brshless DC motor to shut down, can just restart after power-off.In addition, the controller is also
Current-limiting protection value is provided with, the maximum operating currenbt value of motor is limited in current-limiting protection value, specifically, in the present embodiment
Current-limiting protection value is 12A, and allowable range of error is ± 10%.
The MCU master control sets are additionally provided with rotation-clogging protection, when the resistance that the rotation axis of brushless electric machine is subject to is opened more than motor
During dynamic torque, if still cannot be introduced into normal operation after the certain number of electric motor starting, just motor stalls are controlled, it is necessary to disconnected
Electricity, which restarts motor, can just be again started up.Specifically, in the present embodiment, if still cannot be introduced into normal fortune after electric motor starting 20 times
Turn, controller just controls motor stalls.
The MCU master control sets are additionally provided with overcurrent protection value, and the current sensing means detects the brushless electric machine body
The second working current value and sample；The MCU master control sets are by second working current value and the overcurrent protection value
Compare, when the second working current value is more than the overcurrent protection value, control the brushless electric machine body to shut down, and
Restart automatically after a certain period of time., still can not be in running current value scope after brushless electric machine body restarts certain number
When interior, controller just starts locking rotation-clogging protection.Specifically, in the present embodiment, when current sensing means detects brushless electric machine
When the operating current of body is more than 15A, the MCU master control sets just control motor stalls, and set its after 1.5S from
Dynamic to restart, after brushless electric machine body restarts 20 times, brushless electric machine body still can not be transported in the range of running current value
When turning, controller just starts locking rotation-clogging protection.
Figure 13 is temperature-detecting device circuit diagram described in the utility model.The temperature-detecting device passes through a thermistor
The temperature for detecting the controller obtains a probe temperature value, and the probe temperature value is changed into voltage signal and is input to
MCU master control sets；The MCU master control sets control the operating and stopping of brushless electric machine body according to the size of probe temperature value.
Specifically, the MCU master control sets are additionally provided with the first rated temperature and the second rated temperature, when the temperature-detecting device is examined
When measuring the temperature of the controller and being more than first rated temperature, the MCU master control sets control motor shuts down；When
When the temperature-detecting device detects that the temperature of the controller is less than the second rated temperature, the MCU master control sets control
Electric motor starting.In the present embodiment, the first rated temperature value is arranged to 125 °, the second rated temperature value is arranged to 110 °, when
When the temperature of the controller is more than 125 °, the MCU master control sets control motor shuts down；When the temperature of the controller
During less than 110 °, the MCU master control sets control motor is again started up.
Operation principle：The controller is located in the brushless electric machine body, and is fixed on the rear end cap, and with institute
The electrical connection of three-phase input line is stated, the hall sensing device is electrically connected by hall signal terminal with the Hall detection apparatus,
Hall signal is inputted the Hall detection apparatus to be detected；The MCU master control sets detect the Hall detection apparatus
Signal handled, control driving device drives the operating and stopping of the brushless electric machine body, and the supply unit is to institute
State MCU master control set power supplies；And in supply unit be provided with protection apparatus preventing reverse connection be used for prevent the controller because
Burnt out for power cord positive and negative anodes reversal connection；There is provided preliminary filling electrical protective device to protect controller；It is also provided with power regulator device
Stable operating voltage is provided to MCU master controls.The Hall detection apparatus always according to current sensing means, temperature-detecting device and
Voltage check device detect parameters with setting parameter value compare, so as to fulfill the dry rotation protection of motor, current-limiting protection,
Overcurrent protection, under-voltage protection, overvoltage protection, rotation-clogging protection and temperature protection.
Relative to the prior art, the water pump DC brushless motor of the utility model, by the way that controller is built in brushless electricity
In machine body, the three-phase input line on stator is electrically connected with the controller, hall sensing device is installed on the stator
On, and hall signal terminal is connected with, hall sensing device passes through hall signal terminal and the MCU master control sets of the controller
It is electrically connected, hall signal is inputted into the MCU master control sets, the signal that MCU master control sets input the Hall detection apparatus
Processing is detected, and controls the operating of driving device driving brushless electric machine.The water pump DC brushless motor by built in controller,
Eliminate the space shared by external controller so that system structure is more compact, easily operated, and is also provided with various detections
Device and detection circuit, realize the multi-protective function of controller, such as dry rotation protection, current-limiting protection, overcurrent protection, under-voltage guarantor
Shield, overvoltage protection, rotation-clogging protection and temperature protection etc., make the work efficiency higher of motor, and noise is lower, more energy efficient environmental protection.
The utility model is not limited to the above embodiment, if the various changes or deformation to the utility model do not take off
From the spirit and scope of the utility model, if these changes and deformation belong to the claims and equivalents of the utility model
Within the scope of, then the utility model is also intended to comprising these changes and deformation.
Claims (10)
1. a kind of water pump DC brushless motor, including brushless electric machine body and controller；The brushless electric machine body includes front end
Lid, rear end cap, stator and hall sensing device；The stator is installed between drive end bearing bracket and rear end cap, and it is defeated to be connected with three-phase
Enter line；The hall sensing device is installed on the stator, and is connected with hall signal terminal, it is characterised in that：The control
Device processed is located in the brushless electric machine body, and is fixed on the rear end cap, and is electrically connected with the three-phase input line, described
Controller includes MCU master control sets, Hall detection apparatus, driving device and the supply unit being electrically connected to each other；The Hall sense
Answer device to be electrically connected by hall signal terminal with the Hall detection apparatus, hall signal is inputted into the Hall detection apparatus
It is detected；The signal that the MCU master control sets detect the Hall detection apparatus is handled, control driving device driving
The operating and stopping of the brushless electric machine body；The supply unit is used for the power supply for providing the MCU master control sets.
2. water pump DC brushless motor according to claim 1, it is characterised in that：The Hall detection apparatus is included successively
Hall signal input terminal, divider resistance and the filter capacitor of electrical connection；The divider resistance and filter capacitor are defeated to hall signal
The hall signal for entering end input is detected processing.
3. water pump DC brushless motor according to claim 1, it is characterised in that：The controller further include with it is described
The current sensing means that MCU master control sets are electrically connected, for detecting real-time current and the sampling of brshless DC motor；The electric current
Detection device includes the sample resistance and operational amplifier being sequentially connected electrically；The sample resistance takes the electric current for flowing through it
Sample obtains a sampling current value, and the sampling current value is transported to operational amplifier；The operational amplifier takes to described
Sample current value is input to the MCU master control sets after being handled；The MCU master control sets are according to the size control of sampling current value
The operating and stopping of brushless electric machine body processed.
4. water pump DC brushless motor according to claim 3, it is characterised in that：The MCU master control sets are additionally provided with
Dry rotation protection current value；First working current value of the current sensing means detection brushless electric machine body simultaneously samples；The MCU
Master control set compares first working current value with the dry rotation protection current value, when the first working current value is less than institute
State dry rotation protection current value and maintain certain time, control the brshless DC motor body to shut down.
5. water pump DC brushless motor according to claim 3, it is characterised in that：The MCU master control sets are additionally provided with
Overcurrent protection value；The current sensing means detects the second working current value of the brushless electric machine body and samples；The MCU
Master control set compares second working current value with the overcurrent protection value, when the second working current value is more than the mistake
When flowing protection value, the brushless electric machine body is controlled to shut down, and restart automatically after a certain time.
6. water pump DC brushless motor according to claim 1, it is characterised in that：The controller further include with it is described
The temperature-detecting device that MCU master control sets are electrically connected；The temperature-detecting device detects the controller by a thermistor
Temperature obtain a probe temperature value, and the probe temperature value is changed into voltage signal and is input to MCU master control sets；It is described
MCU master control sets control the operating and stopping of brushless electric machine body according to the size of probe temperature value.
7. water pump DC brushless motor according to claim 6, it is characterised in that：The MCU master control sets are additionally provided with
First rated temperature and the second rated temperature, when the temperature-detecting device detects that the temperature of the controller is more than described the
During one rated temperature, the MCU master control sets control motor shuts down；When the temperature-detecting device detects the control
When the temperature of device is less than the second rated temperature, the MCU master control sets control electric motor starting.
8. water pump DC brushless motor according to claim 1, it is characterised in that：The driving device includes mutually being electrically connected
The driving chip and power tube connect；The driving chip includes input terminal and output terminal；The input terminal is used to receive the MCU
The control signal of master control set；The output terminal is used for the switch for controlling the power tube, so as to control the brushless electric machine sheet
The operating of body.
9. water pump DC brushless motor according to claim 1, it is characterised in that：The supply unit includes being electrically connected successively
Protection apparatus preventing reverse connection, pre-charging device and the power regulator device connect；The protection apparatus preventing reverse connection is used to prevent controller
Power cord positive and negative anodes reversal connection；The pre-charging device is used to protect the controller；The power regulator device is used for described
MCU master control sets provide stable operating voltage.
10. water pump DC brushless motor according to claim 9, it is characterised in that：Capacitance is provided with the controller
Device；
The controller power source connects moment and charges to the capacitor, and produces charging current；The pre-charging device limitation
The size of the charging current, protects the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721422044.9U CN207354003U (en) | 2017-10-27 | 2017-10-27 | A kind of water pump DC brushless motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721422044.9U CN207354003U (en) | 2017-10-27 | 2017-10-27 | A kind of water pump DC brushless motor |
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| CN207354003U true CN207354003U (en) | 2018-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565764A (en) * | 2017-10-27 | 2018-01-09 | 台山市江口电器制造有限公司 | A kind of water pump DC brushless motor |
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2017
- 2017-10-27 CN CN201721422044.9U patent/CN207354003U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565764A (en) * | 2017-10-27 | 2018-01-09 | 台山市江口电器制造有限公司 | A kind of water pump DC brushless motor |
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