CN107592059A - A kind of temperature protective device, method, storage medium and equipment - Google Patents
A kind of temperature protective device, method, storage medium and equipment Download PDFInfo
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- CN107592059A CN107592059A CN201710843622.4A CN201710843622A CN107592059A CN 107592059 A CN107592059 A CN 107592059A CN 201710843622 A CN201710843622 A CN 201710843622A CN 107592059 A CN107592059 A CN 107592059A
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- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000013461 design Methods 0.000 claims description 46
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Abstract
The invention discloses a kind of temperature protective device, method, storage medium and equipment, the device includes：Detection module (10) and control module (20)；Wherein, the detection module (10), the Current Temperatures of the power model for detecting motor internal and/or motor；The control module (20), for after the Current Temperatures are increased to the overheat protector point set, making the motor drop rotating speed operation；And after the postrun Current Temperatures of motor drop rotating speed reduce, the motor is set to rise rotating speed operation.The solution of the present invention, can overcome in the prior art very flexible, in-convenience in use with cost it is high the defects of, realize that flexibility is good, the beneficial effect low with cost easy to use.
Description
Technical field
The invention belongs to temperature protection technical field, and in particular to a kind of temperature protective device, method, storage medium and set
It is standby, more particularly to a kind of overheating protection circuit, the motor and the temperature protecting method with the overheating protection circuit.
Background technology
Power model is that power power electronic device combines embedding again into a module by certain function.Integrated power mould
Block is one of Important Components of many Brush-Less DC motor control schemes.In motor operation course, by its switching frequency, ring
The influence of many factors such as border temperature and radiating condition, the temperature of integrated power module would generally be higher.If without appropriate
Protection circuit, may result in module and burnt out because temperature is too high, cause electrical fault, or even trigger fire.
The model of in the market integrated power module is more, and some integrated power modules carry overheat protector function, but excess temperature
Protection point is fixed, it is impossible to is adjusted, can not be met design requirement.For such case, it is necessary to design special peripheral circuit, lead to
Cross setting and overheat protector function that outside control reaches overheat protector point.
The overheat protector scheme of many motors is using the protection mechanism directly shut down, the i.e. temperature when power model at present
When degree reaches protection point, motor is out of service；After temperature of power module declines, motor resumes operation.But in some productions
In product, it is undesirable that when the temperature of power model reaches protection point, motor turns off at once.Some schemes employ operation amplifier
The elements such as device form signaling conversion circuit, when motor temperature reach protection point when, by adjust the size of given rotating speed signal come
Change motor speed, so as to reach protective effect, but this scheme cost is higher.
In the prior art, exist very flexible, in-convenience in use with cost it is high the defects of.
The content of the invention
It is an object of the present invention to it is directed to drawbacks described above, there is provided a kind of temperature protective device, method, storage medium and set
It is standby, with solve in the prior art when the temperature of power model reach protection point when motor it is out of service cause user in-convenience in use
The problem of, reach effect easy to use.
The present invention provides a kind of temperature protective device, including：Detection module and control module；Wherein, the detection module,
For the Current Temperatures for the power model for detecting motor internal and/or motor；The control module, for when the Current Temperatures
After being increased to the overheat protector point of setting, make the motor drop rotating speed operation；And work as when motor drop rotating speed is postrun
After preceding temperature reduces, the motor is set to rise rotating speed operation.
Alternatively, in addition to：The control module, it is additionally operable to when the postrun Current Temperatures of motor drop rotating speed continue
After rise, make the motor out of service；And after the Current Temperatures after motor stopping reduce, make the motor extensive
Multiple operation.
Alternatively, wherein, the motor drop rotating speed operation is made, including：Make the motor by given rated speed fortune
On the basis of row, rotating speed operation gradually drops by the setting range of decrease；And/or the motor is risen rotating speed operation, including：When the electricity
After the machine drop postrun Current Temperatures of rotating speed are reduced to the first design temperature, the motor is set gradually to rise rotating speed fortune by setting increasing degree
OK, rotating speed to the rated speed and is gradually risen to run；Wherein, first design temperature, less than the overheat protector point；
And/or make the motor out of service, including：When the motor drop postrun Current Temperatures of rotating speed continue to be increased to second
After design temperature, just make the motor out of service；Wherein, second design temperature, higher than the overheat protector point；With/
Or, the motor is resumed operation, including：After Current Temperatures after the motor stopping are reduced to the 3rd design temperature, weight
Newly start the motor, so that the motor recovers to by the rated speed to run；Wherein, the 3rd design temperature is low
In the overheat protector point.
Alternatively, in addition to：At least one of given module, display module；Wherein, the detection module, is additionally operable to
Detect the motor drop rotating speed operation and/or rise the postrun current rotating speed of rotating speed；And/or the given module, for institute
State motor and the Setting signal that the motor can be made to be run by rated speed is provided；And/or the display module, for working as
Preceding temperature, overheat protector point, current rotating speed, at least one of the current operating conditions of Setting signal and motor are shown
Show.
Alternatively, the detection module, including：Temperature sensor；And/or when the detection module is additionally operable to detect institute
When stating motor drop rotating speed operation and/or rising the postrun current rotating speed of rotating speed, the detection module, in addition to：Speed probe；
And/or the control module, including：Partial pressure part and switch member；Wherein, the partial pressure part, for being raised when the Current Temperatures
After to the overheat protector point, the startup power supply signal for taking and can making the switch member conducting is divided from given power supply signal, and
The startup power supply signal is provided to the switch member；The switch member, for based on the startup power supply signal conduction simultaneously
Into magnifying state, and the control signal to motor output less than the current rotating speed of the rated speed, so that the electricity
Machine drop rotating speed operation；And/or the partial pressure part, it is additionally operable to after the postrun Current Temperatures of motor drop rotating speed reduce, subtract
The small startup power supply signal；The switch member, it is additionally operable to based on the startup power supply signal shut-off after the reduction, so that described
Motor rises rotating speed operation.
Alternatively, the control module, in addition to：Filter part；Wherein, the filtering part, for the switch member to
The control signal of the motor output is filtered processing；And/or when the control module is additionally operable to make the motor stop fortune
During row, the partial pressure part, it is additionally operable to after the motor drop postrun Current Temperatures of rotating speed continue rise, increase the startup
Power supply signal can extremely make the switch member reach the saturation power supply signal of saturation state；The switch member, it is additionally operable to be based on institute
State saturation power supply signal and enter saturation state, and can make motor control signal out of service to motor output,
So that the motor is out of service；And/or when the control module is additionally operable to make the motor resume operation, the partial pressure
Part, after being additionally operable to the reduction of the Current Temperatures after motor is out of service, reduction can make the switch member enter saturation shape
The saturation power supply signal of state；The switch member, the saturation power supply signal after being additionally operable to based on reduction, exits saturation state simultaneously
Shut-off, so that the motor resumes operation.
Alternatively, wherein, the temperature sensor, including：Thermistor；And/or the partial pressure part, including：Slip becomes
Device is hindered, or, the first divider resistance and the second divider resistance；And/or the switch member, including：Triode or metal-oxide-semiconductor；With/
Or, the filtering part, including：Filter capacitor；And/or when the device also includes given module, the given module, including：
First resistor.
Alternatively, wherein, the thermistor includes NTC thermistor, the NTC thermistor, moreover it is possible to as described
First divider resistance；First connection end of the NTC thermistor, the input as given power supply signal；The NTC temperature-sensitives
The second connection end of resistance, the base stage with the triode, the first connection end of second divider resistance are connected respectively；It is described
The colelctor electrode of triode, as the output end of the control signal for controlled motor rotating speed, also respectively with the first resistor
The first connection end connection of second connection end, the filter capacitor；First connection end of the first resistor, as institute
State the input that motor provides the Setting signal that the motor can be made to be run by rated speed；The of second divider resistance
The second connection end of two connection ends, the emitter stage of the triode and the filter capacitor, is grounded；Or when described point
When casting die includes slide-wire rheostat, the base stage of the triode is connected with the control terminal of the slide-wire rheostat；The slip becomes
The control terminal of device is hindered, is configured as：With the rise for the Current Temperatures that the temperature sensor detects, from given power supply signal
Isolated in be used for provide to the switch member signal increase；Wherein, the signal for offer to the switch member, including：
Startup power supply signal, the saturation power supply signal that the switch member can be made to reach saturation state of the switch member conducting can be made
At least one of.
Alternatively, wherein, the overheat protector point, including：The motor internal and/or the power model can be born
Safe temperature range the upper limit；And/or the control signal, including：Voltage signal more than 1V；It is and/or described given
Power supply signal, including：3-8V d. c. voltage signal.
Matching with said apparatus, another aspect of the present invention provides a kind of temperature protecting method, including：Detect motor internal
And/or the Current Temperatures of the power model of motor；After the Current Temperatures are increased to the overheat protector point of setting, make the electricity
Machine drop rotating speed operation；And after the postrun Current Temperatures of motor drop rotating speed reduce, the motor is set to rise rotating speed fortune
OK.
Alternatively, in addition to：After the motor drop postrun Current Temperatures of rotating speed continue rise, stop the motor
Only run；And after the Current Temperatures after motor stopping reduce, the motor is set to resume operation.
Alternatively, wherein, the motor drop rotating speed operation is made, including：Make the motor by given rated speed fortune
On the basis of row, rotating speed operation gradually drops by the setting range of decrease；And/or the motor is risen rotating speed operation, including：When the electricity
After the machine drop postrun Current Temperatures of rotating speed are reduced to the first design temperature, the motor is set gradually to rise rotating speed fortune by setting increasing degree
OK, rotating speed to the rated speed and is gradually risen to run；Wherein, first design temperature, less than the overheat protector point；
And/or make the motor out of service, including：When the motor drop postrun Current Temperatures of rotating speed continue to be increased to second
After design temperature, just make the motor out of service；Wherein, second design temperature, higher than the overheat protector point；With/
Or, the motor is resumed operation, including：After Current Temperatures after the motor stopping are reduced to the 3rd design temperature, weight
Newly start the motor, so that the motor recovers to by the rated speed to run；Wherein, the 3rd design temperature is low
In the overheat protector point.
Alternatively, in addition to：Detect the motor drop rotating speed operation and/or rise the postrun current rotating speed of rotating speed；With/
Or, the Setting signal that the motor can be made to be run by rated speed is provided to the motor；And/or to Current Temperatures, excess temperature
At least one of current operating conditions of point, current rotating speed, Setting signal and motor are protected to be shown.
Matching with the above method, further aspect of the present invention provides a kind of storage medium, including：Deposited in the storage medium
Contain a plurality of instruction；The a plurality of instruction, for being loaded by processor and being performed above-described temperature protecting method.
Matching with said apparatus or method, further aspect of the present invention provides a kind of equipment, including：Above-described temperature
Protection device；Or processor, for performing a plurality of instruction；Memory, for storing a plurality of instruction；Wherein, a plurality of finger
Order, for by the memory storage, and loaded by the processor and perform above-described temperature protecting method.
Alternatively, the equipment, including：The power model of motor body, and/or motor.
The solution of the present invention, during by the overheat protector point that reaches setting when temperature, rotating speed operation first drops in motor, treats temperature
After lowering, rotating speed gradually rises again, easy to use, can solve motor when motor temperature reaches overtemperature protection point and shut down at once
Cause user's inconvenient problem with use；Can also solve power model and carry overheat protector function, overheat protector can not be changed
Point, limitation is larger, the problem of being restricted product development.
Further, the solution of the present invention, if still being raised by temperature after dropping rotating speed, motor just can out of service, temperature
After decline, motor resumes operation so that the reliability and security of motor operation are preferable；Can solve motor and overheat guarantor occurs
The problem of frequently starting and shut down during shield, and then certain thermal shock and heavy current impact can be caused to motor component.
Further, the solution of the present invention, the overtemperature protection mechanism by the circuit realiration of design are when temperature reaches setting
Overheat protector point when, motor first drop rotating speed operation, after temperature lowers, rotating speed gradually rises again；If temperature after rotating speed drops
Still raise, motor just can be out of service, and after temperature declines, motor resumes operation；And circuit structure is simple, cost is relatively low.
Further, the solution of the present invention, by the control circuit of DC brushless motor, designing simple periphery electricity
Road, so as to reach the function that can voluntarily set motor overheat protector point；, can be according to current temperature when motor temperature reaches protection point
Angle value automatically adjusts rotating speed, so as to reach a kind of equilibrium relation of motor operating state and state of temperature, and machine winding current
Waveform sine is unaffected；If motor temperature after rotating speed is adjusted still persistently rises, directly stop motor operation, so as to reach
To effective protection.
Thus, the solution of the present invention, by being turned when motor temperature reaches protection point according to current temperature value regulation motor
Speed, motor operating state is balanced with state of temperature, solve the electricity when the temperature of power model reaches protection point in the prior art
Machine is out of service to cause user's inconvenient problem with use, so as to, overcome in the prior art very flexible, in-convenience in use and into
The defects of this is high, realize that flexibility is good, the beneficial effect low with cost easy to use.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of the temperature protective device of the present invention；
Fig. 2 is the structural representation of another embodiment of the temperature protective device of the present invention；
Fig. 3 is the structural representation of the another embodiment of the temperature protective device of the present invention；
Fig. 4 is the schematic flow sheet of an embodiment of the temperature protecting method of the present invention；
Fig. 5 is the schematic flow sheet of another embodiment of the temperature protecting method of the present invention.
With reference to accompanying drawing, reference is as follows in the embodiment of the present invention：
10- detection modules；20- control modules；21- partial pressure parts；22- switch members；23- filters part；30- gives module；40-
Display module.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described corresponding accompanying drawing.Obviously, described embodiment is only the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of protection of the invention.
According to an embodiment of the invention, there is provided a kind of temperature protective device, the one of the device of the present invention is real as shown in Figure 1
Apply the structural representation of example.The temperature protective device can include：Detection module 10 and control module 20.
In an optional example, the detection module 10, it can be used for the power mould for detecting motor internal and/or motor
The Current Temperatures of block.
Alternatively, the detection module 10, can include：Temperature sensor.
Thus, detect to obtain Current Temperatures by temperature sensor, detection convenience is good, and reliability is high.
More alternatively, the temperature sensor, can include：Thermistor.
Thus, temperature detection is carried out by thermistor, detection sensitivity is high.
In an optional example, the control module 20 is determined for whether the Current Temperatures are increased to set
Fixed overheat protector point, and after the Current Temperatures are increased to the overheat protector point of setting, make the motor drop rotating speed operation；
And determine whether the motor drop postrun Current Temperatures of rotating speed reduce, and work as when motor drop rotating speed is postrun
After preceding temperature reduces, the motor is set to rise rotating speed operation.
Such as：Motor will not be shut down at once, and the experience effect of user is not interfered with products application.Such as：In air-conditioning
Fan electromotor in the process of running, temperature of power module gradually rises, when reaching the overheat protector point of setting, motor speed
Control signal can be reduced, and motor speed can decrease, and temperature of power module can be also gradually reduced.
Such as：When motor temperature reaches protection point, rotating speed can be automatically adjusted according to current temperature value, so as to reach motor
A kind of equilibrium relation of running status and state of temperature, and machine winding current Waveform sine is unaffected.
Thus, by the way that when temperature reaches protection point, motor can adjust automatically rotating speed according to temperature value so that the fortune of motor
Row reaches a kind of thermal equilibrium state with motor temperature.
Wherein, the overheat protector point, can include：What the motor internal and/or the power model can be born
The upper limit of safe temperature range.
Such as：In the control circuit of DC brushless motor, simple peripheral circuit is designed, can voluntarily be set so as to reach
The function of motor overheat protector point.
Such as：Fan electromotor in air-conditioning,, can in order to reach higher rotation speed when the radiating condition of Air-conditioner design is poor
Overheat protector point is set into height as far as possible in the safe temperature range that power model can be born, avoids motor from frequently overheating
Protection.
Thus, by the design of peripheral circuit, overheat protector point can be configured according to practical situations, and can be real
Existing effect protection, improves the flexibility of product development.
Alternatively, the control module 20, can include：Partial pressure part 21 and switch member 22.
Thus, set by the adaptation of partial pressure part and switch member, partial pressure part can be made according to temperature detection result adjustment point
Pressure value, and then based on the state of partial pressure value controlling switch part, switch member is exported the control signal of corresponding state, control mode letter
Just, control result reliability is high.
More alternatively, the partial pressure part 21, can include：Slide-wire rheostat, or, the first divider resistance and the second partial pressure
Resistance (such as：The second divider resistance R2 shown in Fig. 3).
Thus, the partial-pressure structure of diversified forms is passed through so that partial pressure mode is various and flexible, is advantageous to be lifted easy to use
Property and expand the scope of application.
More alternatively, the switch member 22, can include：Triode (such as：NPN type triode Q1 shown in Fig. 3) or
Metal-oxide-semiconductor.
Such as：Triode Q1 can select other switching devices of identical operation principle to replace, and redesign peripheral device
The choosing value of part, to realize identical on-off action.
Thus, by the switch member of diversified forms, flexibility and the convenience of control can be lifted.
Alternatively, the control module 20, can also include：Filter part 23.
More alternatively, the filtering part 23, can include：Filter capacitor (such as：Filter capacitor C1 shown in Fig. 3).
Thus, it is filtered by filter capacitor, filtration efficiency is high, filters good reliability.
In an optional specific example, the filtering part 23, it can be used for defeated to the motor to the switch member 22
The control signal gone out is filtered processing, miscellaneous in the control signal that the switch member 22 exports to the motor to filter out
Matter signal, be advantageous to be lifted the purity of the control signal, and then lift the switch member 22 to the accurate of the motor control
Property and reliability.
Thus, set by filtering the adaptation of part, impurity signal can be filtered out, be advantageous to lift the pure of the control signal
Degree, and then lift accuracy and reliability to the motor control.
Wherein, the control signal, can include：Voltage signal more than 1V.
Such as：VSP is speed controling signal, output voltage analog signal, is transferred to main control chip, can control motor to turn
Speed, usual VSP value are more than 1V.When VSP is smaller, motor speed is relatively low；VSP is raised, and motor speed rises.When given certain value
V1 voltage analog signals when, motor is run with certain stabilization of speed.
Thus, by using the voltage signal more than 1V as control signal, flexibility to rotational speed regulation is good, reliability
It is high.
Alternatively, the control module 20 makes the motor drop rotating speed operation, can include：Make the motor by given
Rated speed operation on the basis of, by setting the range of decrease gradually drop rotating speed operation.
Thus, by gradual reduction of speed, the Stability and dependability that lifting drop rotating speed is run is advantageous to.
In an optional specific example, the partial pressure part 21, it can be used for when the Current Temperatures are increased to the mistake
After warm protection, the startup power supply signal for taking and can turning on the switch member 22 is divided from given power supply signal, and by described in
Startup power supply signal is provided to the switch member 22.
Thus, the startup power supply signal for taking switch member is divided by way of partial pressure part partial pressure, divides and takes mode easy, divide and take knot
Fruit reliability is high.
Wherein, the given power supply signal, can include：3-8V d. c. voltage signal.Preferably, the given power supply
Signal, it can include：5V d. c. voltage signal.Such as：After given power supply signal changes, it is adapted to given power supply signal
Other parameters adaptation adjustment.
Thus, by being used as given power supply signal using d. c. voltage signal so that partial pressure control convenience is good, reliability
It is high.
In an optional specific example, the switch member 22, it can be used for based on the startup power supply signal conduction simultaneously
Into magnifying state, and the control signal to motor output less than the current rotating speed of the rated speed, so that the electricity
Machine drop rotating speed operation.
Such as：Example shown in Figure 3, as motor operating time lengthens, motor internal temperature and power model
Temperature gradually rises, and TH1 temperature also increases, and TH1 resistances reduce.When temperature raises to a certain extent, TH1 resistance subtracts
It is small to after certain value, the partial pressure increase on R2, after Q1 starting voltage is reached, Q1 is turned on and is entered magnifying state, VSP value
Start gradually to reduce, motor speed declines, and plays motor internal temperature and temperature of power module temperature control effect.
Thus, corresponding speed controling signal, control reliability are exported by partial pressure result of the switch member based on partial pressure part
Height, flexibility are good.
Alternatively, the control module 20 makes the motor rise rotating speed operation, can include：Determine the motor drop rotating speed
Whether postrun Current Temperatures are reduced to the first design temperature, and when the postrun Current Temperatures of motor drop rotating speed reduce
To the first design temperature, the motor is gradually risen rotating speed operation by setting increasing degree, and gradually rise rotating speed to described normal turn
Speed operation.Wherein, first design temperature, less than the overheat protector point.
In an optional specific example, the partial pressure part 21, it can be also used for when motor drop rotating speed is postrun
After Current Temperatures reduce, reduce the startup power supply signal.
In an optional specific example, the switch member 22, it can be also used for based on the startup power supply after the reduction
Signal turns off, so that the motor rises rotating speed operation.
Such as：Example shown in Figure 3, when motor internal temperature drops to certain value, the partial pressure at R2 both ends is less than
Q1 starting voltage, Q1 shut-offs, VSP return to V1 values, and motor speed raises again.
Thus, a liter rotating speed fortune is gone to by exiting drop rotating speed operation again when dropping rotating speed operation and temperature drops to certain value
OK, a liter rotating speed operation can be carried out again when temperature declines positive effect so that cooling-down effect is obvious, and drop can be avoided frequently to turn
Speed, which rises rotating speed, influences motor operation stability, can also avoid due to the loss that frequent rotating speed switches and brings.
In an optional embodiment, it can also include：Make motor drop rotating speed operation after Current Temperatures continue rise when
Temperature protection process.
In an optional example, the control module 20, it can be also used for determining that the motor drop rotating speed is postrun
Whether Current Temperatures, which continue, raises, and after the motor drop postrun Current Temperatures of rotating speed continue rise, makes the motor
It is out of service；And after the Current Temperatures after motor stopping reduce, the motor is set to resume operation.
Thus, if temperature still persistently rises after rotating speed is adjusted by motor, motor operation is directly stopped, so as to reach
Effectively protection.
Alternatively, the control module 20 makes the motor out of service, can include：Determine the motor drop rotating speed fortune
Whether the Current Temperatures after row are increased to the second design temperature, and when the motor drop postrun Current Temperatures of rotating speed continue to rise
After up to the second design temperature, just make the motor out of service.Wherein, second design temperature, protected higher than the excess temperature
Shield point.
In an optional specific example, when the control module 20 can be also used for making the motor out of service,
The partial pressure part 21, it can be also used for after the motor drop postrun Current Temperatures of rotating speed continue rise, opening described in increase
Dynamic power supply signal can extremely make the switch member 22 reach the saturation power supply signal of saturation state.
In an optional specific example, the switch member 22, it can be also used for entering based on the saturation power supply signal
Saturation state, and can make motor control signal out of service to motor output, so that the motor stops fortune
OK.
Such as：Example shown in Figure 3, if VSP reduces, after motor speed reduces, temperature still rises, then TH1
Resistance may proceed to reduce, and R2 partial pressure gradually increases to the value more than VSP, and Q1 enters saturation state, Q1 conductings, VSP value quilt
0V is pulled low to, motor is out of service.
Thus, by just leaving the motor off operation when temperature continues to be increased to certain value after dropping rotating speed, can avoid because
Temperature fails to decline within a very short time after drop rotating speed or because fluctuation of service causes temperature to raise and leave the motor off once in a while
Run bring mistake control and it is inconvenient for use.
Alternatively, the control module 20 makes the motor resume operation, and can include：The working as after motor stopping
After preceding temperature is reduced to the 3rd design temperature, the motor is restarted, so that the motor recovers to by the rated speed
Operation.Wherein, the 3rd design temperature, less than the overheat protector point.
In an optional specific example, when the control module 20 can be also used for making the motor resume operation,
The partial pressure part 21, after can be also used for the reduction of the Current Temperatures after motor is out of service, reduction can make described open
Close the saturation power supply signal that part 22 enters saturation state.
In an optional specific example, the switch member 22, the saturation power supply after can be also used for based on reduction
Signal, exit saturation state and turn off, so that the motor resumes operation.
Such as：Example shown in Figure 3, treat that motor internal temperature declines, after TH1 temperature declines therewith, Q1 shut-offs, electricity
Machine restarts.
Thus, motor is resumed operation again when dropping to certain value by temperature after motor stopping, on the one hand can avoid
Temperature one declines but motor is resumed operation when not reducing many causes motor operation poor performance or temperature rise speed to be accelerated, the opposing party
Face can determine motor it is in a safe condition with can reliability service when make again motor resume operation so that lifting motor recover fortune
Reliability and security after row.
In an optional embodiment, it can also include：At least one of given module 30, display module 40.Its
In, the structural representation of another embodiment of temperature protective device that can be of the invention with reference to shown in Fig. 2, further illustrate rotating speed
Given process, Rotating speed measring process, display process etc..
In an optional example, the detection module 10, can be also used for detecting the motor drop rotating speed operation and/or
Rise the postrun current rotating speed of rotating speed.
Alternatively, when the detection module 10 can be also used for detecting the motor drop rotating speed operation and/or rise rotating speed fortune
During current rotating speed after row, the detection module 10, it can also include：Speed probe.
Thus, current rotating speed is detected by speed probe, detection mode is easy, and testing result reliability is high.
In an optional example, the given module 30, can be used for providing to the motor can make the motor
The Setting signal run by rated speed.
Thus, by conveying Setting signal to motor, reliability of the lifting to motor control is advantageous to；Can also be according to need
Setting signal is adjusted, flexibility is good.
Alternatively, when the device can also include given module 30, the given module 30, can include：First electricity
Resistance (such as：First resistor R1 shown in Fig. 3).
Thus, the control signal of rotating speed is conveyed to motor based on Setting signal by first resistor, conveying reliability is high, right
The security of motor control is good.
More it is alternatively possible to the structural representation of the another embodiment of temperature protective device of the invention with reference to shown in Fig. 3,
Further illustrate a specific implementation structure of detection module, control module and given module.
Such as：Example shown in Figure 3, the overheating protection circuit can include：Given voltage analog signal V1 is inputted
End, given power supply signal VREG inputs, output voltage analog signal VSP output ends, resistance R1, R2, filter capacitor C1, three poles
Pipe Q1, there is the temperature sensibility TH1 of negative temperature coefficient.
Wherein, the thermistor can include NTC thermistor, the NTC thermistor, moreover it is possible to as described first
Divider resistance (such as：The first temperature-sensitive and divider resistance TH1 shown in Fig. 3).Such as：The temperature sensor and described first point
The effect of piezoresistance, it can be realized by NTC thermistor.
In a more optional specific example, the first connection end of the NTC thermistor, as given power supply signal
Input.When the switch member 22 can include triode, the second connection end of the NTC thermistor, respectively with it is described
The first connection end connection of the base stage of triode, second divider resistance.The colelctor electrode of the triode, as can be used for
The output end of the control signal of controlled motor rotating speed, the also second connection end with the first resistor, the filter capacitor respectively
The first connection end connection.First connection end of the first resistor, institute can be made as can be used for providing to the motor
State the input for the Setting signal that motor is run by rated speed.The second connection end of second divider resistance, three pole
The second connection end of the emitter stage of pipe and the filter capacitor, is grounded.
Thus, set by NTC thermistor, triode, the second divider resistance, first resistor, the adaptation of filter capacitor,
The temperature protection to motor can be realized, processing procedure is simple, and temperature protection reliability is high, and it is simple in construction, cost is low.
In a more optional specific example, when the switch member 22 can include metal-oxide-semiconductor, the grid of the metal-oxide-semiconductor
It is connected with the second connection end of the NTC thermistor.The source ground of the metal-oxide-semiconductor.The drain electrode of the metal-oxide-semiconductor, as can
For the output end of the control signal of controlled motor rotating speed, the also second connection end with the first resistor, the filter respectively
The first connection end connection of ripple electric capacity.
Thus, by metal-oxide-semiconductor, control sensitivity and reliability can be lifted.
More alternatively, when the partial pressure part 21 can include slide-wire rheostat, the base stage of the triode and the cunning
The rheostatic control terminal connection of line.The control terminal of the slide-wire rheostat, is configured as：As the temperature sensor detects
Current Temperatures rise, the signal increase from may be used to provide isolated in given power supply signal to the switch member 22.
Wherein it is possible to for providing to the signal of the switch member 22, can include：Can turn on the switch member 22
Startup power supply signal, the switch member 22 can be made to reach at least one of saturation power supply signal of saturation state.
Thus, by slide-wire rheostat, sensitivity and reliability that partial pressure controls can be lifted.
In an optional example, the display module 40, it can be used for Current Temperatures, overheat protector point, work as forward
At least one of current operating conditions of speed, Setting signal and motor are shown.
Thus, by being shown to relevant parameter, user can be made to check relevant parameter at any time, intuitive is strong, human nature
Change.
Through substantial amounts of verification experimental verification, using the technical scheme of the present embodiment, by the overheat protector for reaching setting when temperature
During point, rotating speed operation first drops in motor, and after temperature lowers, rotating speed gradually rises again, easy to use, can solve motor temperature
Motor is shut down at once when reaching overtemperature protection point causes user's inconvenient problem with use.Can also solve power model to carry
Warm defencive function, overheat protector point can not be changed, limitation is larger, the problem of being restricted product development.
According to an embodiment of the invention, a kind of temperature protecting method corresponding to temperature protective device is additionally provided.Referring to
The schematic flow sheet of one embodiment of flow of the invention shown in Fig. 4.The temperature protecting method can include：
At step S110, the Current Temperatures of the power model of motor internal and/or motor are detected.Step S110 is specific
It may refer to concrete function and the processing of detection module 10.
Such as：Current Temperatures can be detected by detection module 10.Detection module 10 can include：Temperature sensor.
Thus, detect to obtain Current Temperatures by temperature sensor, detection convenience is good, and reliability is high.
Such as：The temperature sensor, it can include：Thermistor.
Thus, temperature detection is carried out by thermistor, detection sensitivity is high.
At step S120, determine whether the Current Temperatures are increased to the overheat protector point of setting, and when described current
After temperature is increased to the overheat protector point of setting, make the motor drop rotating speed operation.Step S120 specifically may refer to control
The concrete function of module 20 and processing.And
Alternatively, the motor drop rotating speed operation is made in step S120, can be included：Make the motor by it is given just
On the basis of normal rotating speed operation, rotating speed operation gradually drops by the setting range of decrease.
Thus, by gradual reduction of speed, the Stability and dependability that lifting drop rotating speed is run is advantageous to.
At step S130, determine whether the motor drop postrun Current Temperatures of rotating speed reduce, and work as the motor
After dropping the postrun Current Temperatures reduction of rotating speed, the motor is set to rise rotating speed operation.Step S130 is specifically referring also to control
The concrete function of molding block 20 and processing.
Such as：Motor will not be shut down at once, and the experience effect of user is not interfered with products application.Such as：In air-conditioning
Fan electromotor in the process of running, temperature of power module gradually rises, when reaching the overheat protector point of setting, motor speed
Control signal can be reduced, and motor speed can decrease, and temperature of power module can be also gradually reduced.
Such as：When motor temperature reaches protection point, rotating speed can be automatically adjusted according to current temperature value, so as to reach motor
A kind of equilibrium relation of running status and state of temperature, and machine winding current Waveform sine is unaffected.
Thus, by the way that when temperature reaches protection point, motor can adjust automatically rotating speed according to temperature value so that the fortune of motor
Row reaches a kind of thermal equilibrium state with motor temperature.
Alternatively, the motor is risen rotating speed operation in step S130, can include：Determine the motor drop rotating speed operation
Whether Current Temperatures afterwards are reduced to the first design temperature, and when the motor drop postrun Current Temperatures of rotating speed are reduced to the
After one design temperature, the motor is gradually risen rotating speed operation by setting increasing degree, and gradually rise rotating speed to the rated speed and transport
OK.Wherein, first design temperature, less than the overheat protector point.
Such as：Example shown in Figure 3, when motor internal temperature drops to certain value, the partial pressure at R2 both ends is less than
Q1 starting voltage, Q1 shut-offs, VSP return to V1 values, and motor speed raises again.
Thus, a liter rotating speed fortune is gone to by exiting drop rotating speed operation again when dropping rotating speed operation and temperature drops to certain value
OK, a liter rotating speed operation can be carried out again when temperature declines positive effect so that cooling-down effect is obvious, and drop can be avoided frequently to turn
Speed, which rises rotating speed, influences motor operation stability, can also avoid due to the loss that frequent rotating speed switches and brings.
In an optional embodiment, it can also include：Make motor drop rotating speed operation after Current Temperatures continue rise when
Temperature protection process.
Specifically, the schematic flow sheet of another embodiment of temperature protecting method that can be of the invention with reference to shown in Fig. 5, enters
One step illustrates to make motor drop temperature protection process when Current Temperatures after rotating speed is run continue rise.
Step S210, determines whether the motor drop postrun Current Temperatures of rotating speed continue to raise, and works as the motor
After the drop postrun Current Temperatures of rotating speed continue rise, make the motor out of service.Step S210 specifically referring also to
The concrete function of control module 20 and processing.And
Alternatively, make the motor out of service in step S210, can include：After determining the motor drop rotating speed operation
Current Temperatures whether be increased to the second design temperature, and when the motor drop postrun Current Temperatures of rotating speed continue to be increased to
After second design temperature, just make the motor out of service.Wherein, second design temperature, higher than the overheat protector point.
Such as：Example shown in Figure 3, if VSP reduces, after motor speed reduces, temperature still rises, then TH1
Resistance may proceed to reduce, and R2 partial pressure gradually increases to the value more than VSP, and Q1 enters saturation state, Q1 conductings, VSP value quilt
0V is pulled low to, motor is out of service.
Thus, by just leaving the motor off operation when temperature continues to be increased to certain value after dropping rotating speed, can avoid because
Temperature fails to decline within a very short time after drop rotating speed or because fluctuation of service causes temperature to raise and leave the motor off once in a while
Run bring mistake control and it is inconvenient for use.
Step S220, after the Current Temperatures after motor stopping reduce, the motor is set to resume operation.The step
The S220 specifically concrete function referring also to control module 20 and processing.
Thus, if temperature still persistently rises after rotating speed is adjusted by motor, motor operation is directly stopped, so as to reach
Effectively protection.
Alternatively, the motor is resumed operation in step S220, can include：Current temperature after the motor stopping
After degree is reduced to the 3rd design temperature, the motor is restarted, so that the motor recovers to by the rated speed to run.
Wherein, the 3rd design temperature, less than the overheat protector point.
Such as：Example shown in Figure 3, treat that motor internal temperature declines, after TH1 temperature declines therewith, Q1 shut-offs, electricity
Machine restarts.
Thus, motor is resumed operation again when dropping to certain value by temperature after motor stopping, on the one hand can avoid
Temperature one declines but motor is resumed operation when not reducing many causes motor operation poor performance or temperature rise speed to be accelerated, the opposing party
Face can determine motor it is in a safe condition with can reliability service when make again motor resume operation so that lifting motor recover fortune
Reliability and security after row.
In an optional embodiment, it can also include：Detect the motor drop rotating speed operation and/or rise rotating speed operation
Current rotating speed afterwards.
Thus, by detecting current rotating speed, can be provided for control module precisely and reliable rotating speed control foundation, favorably
Accuracy and reliability in lifting to rotating speed control.
In an optional embodiment, it can also include：Being there is provided to the motor can be such that the motor turns by normal
The Setting signal of speed operation.
Thus, by conveying Setting signal to motor, reliability of the lifting to motor control is advantageous to；Can also be according to need
Setting signal is adjusted, flexibility is good.
In an optional embodiment, it can also include：To Current Temperatures, overheat protector point, current rotating speed, given letter
Number and at least one of the current operating conditions of motor shown.
Thus, by being shown to relevant parameter, user can be made to check relevant parameter at any time, intuitive is strong, human nature
Change.
The processing and function realized by the method for the present embodiment essentially correspond to earlier figures 1 to the device shown in Fig. 3
Embodiment, principle and example, therefore not detailed part in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment
It is bright, it will not be described here.
Through substantial amounts of verification experimental verification, using technical scheme, if still being raised by temperature after dropping rotating speed, motor
Just can be out of service, after temperature declines, motor resumes operation so that the reliability and security of motor operation are preferable；Can be with
Solve motor to occur frequently to start and shut down during overtemperature protection, and then certain thermal shock and big can be caused to motor component
The problem of rush of current.
According to an embodiment of the invention, a kind of storage medium corresponding to temperature protecting method is additionally provided.The storage is situated between
Matter, it can include：A plurality of instruction is stored with the storage medium；The a plurality of instruction, for being loaded by processor and being performed
Above-described temperature protecting method.
The processing and function realized by the storage medium of the present embodiment essentially correspond to earlier figures 4 to shown in Fig. 5
Embodiment, principle and the example of method, therefore not detailed part in the description of the present embodiment, may refer to the phase in previous embodiment
Speak on somebody's behalf bright, will not be described here.
Through substantial amounts of verification experimental verification, using technical scheme, pass through the overtemperature protection machine of the circuit realiration of design
System is when temperature reaches the overheat protector point of setting, and rotating speed operation first drops in motor, and after temperature lowers, rotating speed gradually rises again
It is high；If temperature still raises after drop rotating speed, motor just can be out of service, and after temperature declines, motor resumes operation；And circuit knot
Structure is simple, and cost is relatively low.
According to an embodiment of the invention, the one kind additionally provided corresponding to temperature protecting method or temperature protecting method is set
It is standby.The equipment, it can include：Above-described temperature protective device.Or the equipment, it can include：Processor, for holding
The a plurality of instruction of row；Memory, for storing a plurality of instruction；Wherein, a plurality of instruction, for by the memory storage, and
Loaded by the processor and perform above-described temperature protecting method.
Alternatively, the equipment, can include：The power model of motor body, and/or motor.
In an optional embodiment, in figure 3, V1 is given voltage analog signal；R1, R2 are resistance；C1 is filter
Ripple electric capacity；Q1 is NPN triode；TH1 is NTC thermistor；VREG is given power supply signal；VSP is output voltage simulation letter
Number (i.e. the control signal of rotating speed).The example shown in Fig. 3 is may refer to, the overheating protection circuit can include：Given voltage mould
Intend signal V1 inputs, given power supply signal VREG inputs, output voltage analog signal VSP output ends, resistance R1, R2, filter
Ripple electric capacity C1, triode Q1, there is the temperature sensibility TH1 of negative temperature coefficient.
Wherein, the buffering of the down or up speed of VSP is can be carried out by using filter capacitor C1, is not required to add it again
Its resistance, simple in construction, reliability is high.
In an optional example, TH1 is the NTC thermistor with negative temperature coefficient, and its resistance is with the liter of temperature
High and reduce, for carrying out motor internal temperature detection, TH1 real time temperature is by motor internal temperature and temperature of power module shadow
Ring.
Alternatively, TH1 is in addition to carrying out temperature sense, while also needs to carry out partial pressure with R2, and triode is controlled with this
Q1 base stage and the voltage of transmitting interpolar, so as to control triode Q1 conducting and shut-off.Based on this demand, selection uses
NTC thermistor.Other sensors can detect temperature, but can not change itself resistance, realization and R2 partial pressures, change triode
Working condition.
In an optional example, VSP is speed controling signal, output voltage analog signal, is transferred to main control chip, can
Controlled motor rotating speed, usual VSP value are more than 1V.When VSP is smaller, motor speed is relatively low；VSP is raised, and motor speed rises.When
During the V1 voltage analog signals of given certain value, motor is run with certain stabilization of speed.During beginning, motor internal temperature and work(
Rate module temperature is relatively low, and now, TH1 temperature is also low, and TH1 resistance is very big.After TH1 and R2 is to VREG partial pressures, it is added to
Voltage very little in Q1 base stages, Q1 are not turned on.Now VSP value and V1 value are of substantially equal.
Alternatively, V1 can be by being given to VSP after resistance R1, and what VSP connect is the main control chip of electric machine controller, master control core
Piece adjusts motor speed according to VSP value, and when VSP values are big, rotating speed is big；VSP hours, rotating speed are small.
Wherein, resistance R1 can play metering function, and the size of this value can influence the working condition of triode.
Alternatively, the pin function relation of V1 set-point and control program and control chip is larger, can generally give
Be 0V-6.5V, can also change.The set-point and VREG are not related.VREG is typically 5V, the partial pressure gauge for TH1 and R1
Calculate.
In an optional example, as motor operating time lengthens, the temperature of motor internal temperature and power model by
Edge up height, and TH1 temperature also increases, and TH1 resistances reduce.
Alternatively, when temperature rise to a certain extent, after TH1 resistance is reduced to certain value, the partial pressure increase on R2, when
After the starting voltage for reaching Q1, Q1 is turned on and is entered magnifying state, and VSP value starts gradually to reduce, and motor speed declines, to electricity
Machine internal temperature and temperature of power module play temperature control effect.
Alternatively, when motor internal temperature drops to certain value, the partial pressure at R2 both ends is less than Q1 starting voltage, and Q1 is closed
Disconnected, VSP returns to V1 values, and motor speed raises again.
Alternatively, if VSP reduces, after motor speed reduces, temperature still rises, then TH1 resistance may proceed to reduce, R2
Partial pressure gradually increase to value more than VSP, Q1 enters saturation state, Q1 conductings, and VSP value is pulled low to 0V, and motor stops
Operation.Treat that motor internal temperature declines, after TH1 temperature declines therewith, Q1 shut-offs, motor restarting.
Such as：When motor temperature reaches overheat protector point, triode enters magnifying state, motor speed by cut-off state
Decline；Motor speed declines, and motor temperature can be gradually reduced, when temperature drops to certain value, on motor speed can gradually recover
Rise, now, triode is still in magnifying state；After if rotating speed declines, constant temperature increase, when increasing to certain value, triode
Saturation conduction state, motor stopping are entered by magnifying state.
It can be seen that the application is the overheating protection circuit for motor.By a triode, negative temperature system on circuit topology
Several thermistors and peripheral resistance capacitance composition.Motor internal temperature transition is controlled into voltage signal by thermistor
The conducting state (shut-off, amplification or cut-off) of triode, and then change motor speed control signal, realize when motor temperature is relatively low
When, motor is run with given rotating speed；When motor temperature is higher and reaches overheat protector point, motor drop rotating speed operation.
Wherein, the circuit topological structure of the application, a triode, negative tempperature coefficient thermistor and periphery electricity are only included
Electric capacity is hindered, circuit structure is simply more.
In addition, the function that the application realizes is that motor is with given rotating speed normal operation when motor internal temperature is relatively low；When
Motor internal temperature is higher and when reaching overheat protector point, motor can't be shut down, but drops rotating speed operation, treats under motor temperature
After drop, rotating speed gos up again.
In addition, protection object, protection mechanism and circuit structure that the application is realized, unlike the prior art.Wherein,
The protection mechanism of the application can include：When temperature reaches the overheat protector point of setting, rotating speed operation first drops in motor, treats temperature
After lowering, rotating speed gradually rises again；If temperature still raises after drop rotating speed, motor just can be out of service, after temperature declines, electricity
Machine resumes operation.
In an optional embodiment, Q1 can select other switching devices of identical operation principle to replace, and again
The choosing value of peripheral components is designed, to realize identical on-off action.
The processing and function realized by the equipment of the present embodiment essentially correspond to earlier figures 1 to the device shown in Fig. 3,
, can be with or earlier figures 4 are to the embodiment, principle and example of the method shown in Fig. 5, therefore not detailed part in the description of the present embodiment
Referring to the related description in previous embodiment, will not be described here.
Through substantial amounts of verification experimental verification, using technical scheme, by the control circuit of DC brushless motor,
Simple peripheral circuit is designed, so as to reach the function that can voluntarily set motor overheat protector point；When motor temperature reaches protection
During point, rotating speed can be automatically adjusted according to current temperature value, is closed so as to reach a kind of balance of motor operating state and state of temperature
System, and machine winding current Waveform sine is unaffected；If motor temperature after rotating speed is adjusted still persistently rises, directly stop
Only motor operation, so as to reach effective protection.
To sum up, it will be readily appreciated by those skilled in the art that on the premise of not conflicting, above-mentioned each advantageous manner can be certainly
Combined, be superimposed by ground.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included within scope of the presently claimed invention.
Claims (16)
- A kind of 1. temperature protective device, it is characterised in that including：Detection module (10) and control module (20)；Wherein,The detection module (10), the Current Temperatures of the power model for detecting motor internal and/or motor；The control module (20), for after the Current Temperatures are increased to the overheat protector point set, dropping the motor Rotating speed is run；AndAfter the postrun Current Temperatures of motor drop rotating speed reduce, the motor is set to rise rotating speed operation.
- 2. device according to claim 1, it is characterised in that also include：The control module (20), it is additionally operable to after the motor drop postrun Current Temperatures of rotating speed continue rise, make described Motor is out of service；AndAfter Current Temperatures after the motor stopping reduce, the motor is set to resume operation.
- 3. device according to claim 2, it is characterised in that wherein,Make the motor drop rotating speed operation, including：The motor is set gradually to drop rotating speed operation by the setting range of decrease on the basis of by given rated speed operation；And/orThe motor is set to rise rotating speed operation, including：After the motor drop postrun Current Temperatures of rotating speed are reduced to the first design temperature, make the motor by setting increasing degree Rotating speed operation is gradually risen, and gradually rises rotating speed to the rated speed and runs；Wherein, first design temperature, less than described Overheat protector point；And/orMake the motor out of service, including：After the motor drop postrun Current Temperatures of rotating speed continue to be increased to the second design temperature, just stop the motor Operation；Wherein, second design temperature, higher than the overheat protector point；And/orThe motor is set to resume operation, including：After Current Temperatures after the motor stopping are reduced to the 3rd design temperature, the motor is restarted, so that described Motor recovers to by the rated speed to run；Wherein, the 3rd design temperature, less than the overheat protector point.
- 4. according to the device described in one of claim 1-3, it is characterised in that also include：Given module (30), display module At least one of (40)；Wherein,The detection module (10), it is additionally operable to detect the motor drop rotating speed operation and/or rises the postrun current rotating speed of rotating speed；And/orThe given module (30), for providing the given letter that the motor can be made to be run by rated speed to the motor Number；And/orThe display module (40), for working as to Current Temperatures, overheat protector point, current rotating speed, Setting signal and motor At least one of preceding running status is shown.
- 5. according to the device described in one of claim 1-4, it is characterised in thatThe detection module (10), including：Temperature sensor；And/orWhen the detection module (10) is additionally operable to detect the motor drop rotating speed operation and/or rises the postrun current rotating speed of rotating speed When, the detection module (10), in addition to：Speed probe；And/orThe control module (20), including：Partial pressure part (21) and switch member (22)；Wherein,The partial pressure part (21), for after the Current Temperatures are increased to the overheat protector point, giving certainly in power supply signal Divide the startup power supply signal for taking and can turning on the switch member (22), and the startup power supply signal is provided to the switch Part (22)；The switch member (22), for based on the startup power supply signal conduction and entering magnifying state, and it is defeated to the motor Go out the control signal of the current rotating speed less than the rated speed, so that motor drop rotating speed operation；And/orThe partial pressure part (21), it is additionally operable to after the postrun Current Temperatures of motor drop rotating speed reduce, reduce the startup Power supply signal；The switch member (22), it is additionally operable to based on the startup power supply signal shut-off after the reduction, so that the motor rises rotating speed Operation.
- 6. device according to claim 5, it is characterised in that the control module (20), in addition to：Filter part (23)； Wherein,The filtering part (23), for being filtered processing to the control signal that the switch member (22) exports to the motor；And/orWhen the control module (20) is additionally operable to make the motor out of service,The partial pressure part (21), it is additionally operable to after the motor drop postrun Current Temperatures of rotating speed continue rise, described in increase Startup power supply signal can extremely make the switch member (22) reach the saturation power supply signal of saturation state；The switch member (22), it is additionally operable to enter saturation state based on the saturation power supply signal, and energy is exported to the motor Enough make motor control signal out of service, so that the motor is out of service；And/orWhen the control module (20) is additionally operable to make the motor resume operation,The partial pressure part (21), after being additionally operable to the reduction of the Current Temperatures after motor is out of service, reduction can make described Switch member (22) enters the saturation power supply signal of saturation state；The switch member (22), the saturation power supply signal after being additionally operable to based on reduction, exits saturation state and turns off, so that The motor resumes operation.
- 7. device according to claim 6, it is characterised in that wherein,The temperature sensor, including：Thermistor；And/orThe partial pressure part (21), including：Slide-wire rheostat, or, the first divider resistance and the second divider resistance；And/orThe switch member (22), including：Triode or metal-oxide-semiconductor；And/orThe filtering part (23), including：Filter capacitor；And/orWhen the device also includes given module (30), the given module (30), including：First resistor.
- 8. device according to claim 7, it is characterised in that wherein,The thermistor includes NTC thermistor, the NTC thermistor, moreover it is possible to as first divider resistance；First connection end of the NTC thermistor, the input as given power supply signal；The of the NTC thermistor Two connection ends, the base stage with the triode, the first connection end of second divider resistance are connected respectively；The colelctor electrode of the triode, as the output end of the control signal for controlled motor rotating speed, also respectively with described The first connection end connection of the second connection end of one resistance, the filter capacitor；First connection end of the first resistor, as being provided to the motor motor can be made to be transported by rated speed The input of capable Setting signal；Second company of the second connection end of second divider resistance, the emitter stage of the triode and the filter capacitor End is connect, is grounded；OrWhen the partial pressure part (21) includes slide-wire rheostat, the base stage of the triode and the control terminal of the slide-wire rheostat Connection；The control terminal of the slide-wire rheostat, is configured as：With the liter for the Current Temperatures that the temperature sensor detects Height, increase from being used to provide to the signal of the switch member (22) isolated in given power supply signal；Wherein, the signal for offer to the switch member (22), including：The startup electricity that the switch member (22) turns on can be made Source signal, the switch member (22) can be made to reach at least one of saturation power supply signal of saturation state.
- 9. according to the device described in one of claim 5-8, it is characterised in that wherein,The overheat protector point, including：The safe temperature range that the motor internal and/or the power model can be born The upper limit；And/orThe control signal, including：Voltage signal more than 1V；And/orThe given power supply signal, including：3-8V d. c. voltage signal.
- A kind of 10. temperature protecting method, it is characterised in that including：Detect the Current Temperatures of the power model of motor internal and/or motor；After the Current Temperatures are increased to the overheat protector point of setting, make the motor drop rotating speed operation；AndAfter the postrun Current Temperatures of motor drop rotating speed reduce, the motor is set to rise rotating speed operation.
- 11. according to the method for claim 10, it is characterised in that also include：After the motor drop postrun Current Temperatures of rotating speed continue rise, make the motor out of service；AndAfter Current Temperatures after the motor stopping reduce, the motor is set to resume operation.
- 12. according to the method for claim 11, it is characterised in that wherein,Make the motor drop rotating speed operation, including：The motor is set gradually to drop rotating speed operation by the setting range of decrease on the basis of by given rated speed operation；And/orThe motor is set to rise rotating speed operation, including：After the motor drop postrun Current Temperatures of rotating speed are reduced to the first design temperature, make the motor by setting increasing degree Rotating speed operation is gradually risen, and gradually rises rotating speed to the rated speed and runs；Wherein, first design temperature, less than described Overheat protector point；And/orMake the motor out of service, including：After the motor drop postrun Current Temperatures of rotating speed continue to be increased to the second design temperature, just stop the motor Operation；Wherein, second design temperature, higher than the overheat protector point；And/orThe motor is set to resume operation, including：After Current Temperatures after the motor stopping are reduced to the 3rd design temperature, the motor is restarted, so that described Motor recovers to by the rated speed to run；Wherein, the 3rd design temperature, less than the overheat protector point.
- 13. according to the method described in one of claim 10-12, it is characterised in that also include：Detect the motor drop rotating speed operation and/or rise the postrun current rotating speed of rotating speed；And/orThe Setting signal that the motor can be made to be run by rated speed is provided to the motor；And/orTo in the current operating conditions of Current Temperatures, overheat protector point, current rotating speed, Setting signal and motor at least it One is shown.
- 14. a kind of storage medium, it is characterised in that a plurality of instruction is stored with the storage medium；The a plurality of instruction, is used for Loaded by processor and perform the temperature protecting method as described in claim 10-13 is any.
- A kind of 15. equipment, it is characterised in that including：Temperature protective device as described in claim 1-9 is any；OrProcessor, for performing a plurality of instruction；Memory, for storing a plurality of instruction；Wherein, a plurality of instruction, for loading and performing such as claim by the memory storage, and by the processor Any described temperature protecting methods of 10-13.
- 16. equipment according to claim 15, it is characterised in that the equipment, including：Motor body, and/or motor Power model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710843622.4A CN107592059A (en) | 2017-09-19 | 2017-09-19 | A kind of temperature protective device, method, storage medium and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN108682672A (en) * | 2018-04-26 | 2018-10-19 | 浙江大学 | High-power semiconductor module suitable for the soaking under Short-circuit Working Condition of internal power switch chip |
| CN109103849A (en) * | 2018-08-22 | 2018-12-28 | 珠海格力电器股份有限公司 | A kind of overtemperature protection system, motor and its method for excessive heating protection |
| CN109101070A (en) * | 2018-08-14 | 2018-12-28 | 江苏美的清洁电器股份有限公司 | Household appliance and its constant-temperature control method and device |
| CN109981028A (en) * | 2019-04-23 | 2019-07-05 | 浙江工业大学之江学院 | A kind of servo motor control device and method |
| FR3087972A1 (en) * | 2018-10-26 | 2020-05-01 | Valeo Systemes Thermiques | STEERING SYSTEM FOR AIR PULSE |
| CN111509961A (en) * | 2020-05-18 | 2020-08-07 | 广东美的暖通设备有限公司 | Over-temperature protection device, variable frequency driver, electrical appliance, method, device and storage medium |
| CN111524706A (en) * | 2020-04-27 | 2020-08-11 | 宁波奥克斯电气股份有限公司 | Electrolytic capacitor protection device and method and air conditioner |
| CN111969798A (en) * | 2020-09-22 | 2020-11-20 | 珠海格力电器股份有限公司 | Motor control device and method, motor equipment and air conditioning system |
| CN112006575A (en) * | 2020-09-04 | 2020-12-01 | 广州白金科技有限公司 | But remote control's intelligent house is with automatically cleaning bathtub |
| CN112332648A (en) * | 2020-11-13 | 2021-02-05 | 山特电子（深圳）有限公司 | Device and method for actively balancing thermal performance of parallel power devices |
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| CN108682672B (en) * | 2018-04-26 | 2021-11-09 | 浙江大学 | High-power semiconductor module suitable for soaking internal power switch chip under short circuit working condition |
| CN108682672A (en) * | 2018-04-26 | 2018-10-19 | 浙江大学 | High-power semiconductor module suitable for the soaking under Short-circuit Working Condition of internal power switch chip |
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| CN109103849A (en) * | 2018-08-22 | 2018-12-28 | 珠海格力电器股份有限公司 | A kind of overtemperature protection system, motor and its method for excessive heating protection |
| FR3087972A1 (en) * | 2018-10-26 | 2020-05-01 | Valeo Systemes Thermiques | STEERING SYSTEM FOR AIR PULSE |
| CN109981028A (en) * | 2019-04-23 | 2019-07-05 | 浙江工业大学之江学院 | A kind of servo motor control device and method |
| CN111524706A (en) * | 2020-04-27 | 2020-08-11 | 宁波奥克斯电气股份有限公司 | Electrolytic capacitor protection device and method and air conditioner |
| CN111524706B (en) * | 2020-04-27 | 2022-03-04 | 宁波奥克斯电气股份有限公司 | Electrolytic capacitor protection device and method and air conditioner |
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| CN115076888A (en) * | 2022-05-07 | 2022-09-20 | 宁波奥克斯电气股份有限公司 | Motor temperature control method and device and air conditioner |
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