CN101619722A - Method and circuit for controlling temperature of power module - Google Patents
Method and circuit for controlling temperature of power module Download PDFInfo
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- CN101619722A CN101619722A CN200810116013A CN200810116013A CN101619722A CN 101619722 A CN101619722 A CN 101619722A CN 200810116013 A CN200810116013 A CN 200810116013A CN 200810116013 A CN200810116013 A CN 200810116013A CN 101619722 A CN101619722 A CN 101619722A
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Abstract
The invention relates to the technical field of air conditioning, in particular to a method for controlling a temperature of a power module, which comprises that: the temperature of the power module is detected by a temperature sensor, the power module and the temperature sensor are mounted on the same radiator plate, and the power module is used for driving a variable frequency compressor; the temperature sensor converts a temperature signal into an electrical signal and outputs the electrical signal ; a control circuit receives the electrical signal from the temperature sensor and outputs an instruction signal according to the electrical signal ; and the power module receives the instruction signal from the control circuit, and regulates a power supply frequency output to the variable frequency compressor according to the instruction signal, and the variation of the power supply frequency is used for controlling the temperature of the power module. The method has the advantages of capability of controlling the temperature of the power module in a certain range, simpleness, easy realization and good temperature rise control effect on the power module.
Description
Technical field
The present invention relates to the air conditioner field, be specifically related to control the Method and circuits of the temperature of power module of the frequency-changeable compressor that is used for driving air conditioner.
Background technique
As everyone knows, various power devices in the circuit board all can distribute heat in when work, the heat that power device came out, if can not be distributed timely, will cause the generation of many problems, as influence the proper functioning of circuit, the parameter that inputs or outputs is changed, the components and parts accelerated ageing, some components and parts is owing to the rising of temperature can quit work, some components and parts is because the rising meeting of temperature is burnt, and the heat that power device is come out when serious may make complete machine be burnt, even causes fire.In the prior art, the method that power device is dispelled the heat mainly is, employing is installed Heat sink and/or radiation fan additional on the surface of radiating element, though this radiating mode effect is more remarkable, also easier to be direct, but work as power device temperature fast rise at short notice, or behind power device work chronic, a part of heat in the power device can not be come out by Heat sink and/or radiation fan, remain with the heat that is not come out in the power device and can cause serious consequence, in addition, because the damage of radiation fan, or because Heat sink and power device bad connection will can cause the generation of the problems referred to above equally.Especially for the powerful power model of transmission, the cost of power model is higher, the parts that driven by power model, the general effect that in equipment, all will play key, as drive the power model of the frequency-changeable compressor in the air conditioner, in case temperature is too high, the operation of frequency-changeable compressor will directly be had influence on, even frequency-changeable compressor burnt, if the frequency-changeable compressor operation is undesired, will have influence on the operation of air conditioner, because the intensification of above-mentioned power model influence, might cause complete equipment badly damaged, therefore be necessary the heat dissipating method of existing power device is carried out some effective improvement.
Summary of the invention
The objective of the invention is to, adopt a kind of power controlling module method of temperature, described method comprises the steps:
S1: power model and temperature transducer are installed on the same block of Heat sink, detect the temperature of the power model be used to drive frequency-changeable compressor, convert temperature signal to electrical signal output with temperature transducer;
S2: control circuit receives the electrical signal of temperature transducer output, and described control circuit is according to described electrical signal output instruction signal;
S3: the command signal of power model reception control circuit output, the described command signal adjustment of power model foundation outputs to the frequency of supply of frequency-changeable compressor, and the change of described frequency of supply is used for the temperature of control rate module.
Wherein, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is during less than 79 degrees centigrade, and the power model dimension will be held original adjustment to supply frequency of variable frequency compressor.
Wherein, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is more than or equal to 79 degrees centigrade, and during less than 85 degrees centigrade, described power model is adjusted into 1 hertz of rising in per 20 seconds to the frequency of supply of frequency-changeable compressor.
Wherein, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is more than or equal to 85 degrees centigrade, and during less than 90 degrees centigrade, described power model is not adjusted described frequency of supply.
Wherein, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is more than or equal to 90 degrees centigrade, and during less than 100 degrees centigrade, described power model is adjusted into 1 hertz of decline in per 10 seconds to the frequency of supply of frequency-changeable compressor.
Wherein, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer will stop the power supply to frequency-changeable compressor during greater than 100 degrees centigrade.
Wherein, described temperature transducer adopts resistance temperature detector, one end of described resistance temperature detector is connected with power supply, the other end is connected with an end of a pull down resistor, the other end ground connection of described pull down resistor is connected with the signal input part of control circuit board between described resistance temperature detector and the pull down resistor.
A kind of circuit of power controlling module temperature, described circuit comprises:
Temperature transducer is used for the temperature of detection power module, and described temperature transducer is connected with the signal input part of control circuit, and described temperature transducer and described power model are installed on the same block of Heat sink;
Control circuit, the output terminal of described control circuit is connected with the input end of described power model, after being used for the input signal of described temperature transducer handled, to described power model output control command.
Wherein, described temperature transducer adopts resistance temperature detector, one end of described resistance temperature detector is connected with power supply, the other end is connected with an end of a pull down resistor, be connected with the signal input part of control circuit between the other end ground connection of described pull down resistor, described resistance temperature detector and pull down resistor.
Wherein, described control circuit is the control circuit in the air conditioner.
Advantage of the present invention and beneficial effect are; the method that power controlling module of the present invention heats up is simple; only on the Heat sink of existing power model, installed temperature transducer additional; and with the output signal of temperature transducer; be connected on the control circuit board of existing power model; therefore; for the whole cost of existing control circuit and power model increase very little; and be easy to realize; since in the present invention described power model drive to as if frequency-changeable compressor; by the frequency conversion of frequency-changeable compressor power supply is regulated; to reach the control that power model is heated up; in air-conditioning system; the change of supply frequency of variable frequency compressor is less relatively to the influence of whole air-conditioning system; and the frequency of supply of change frequency-changeable compressor, for the effect highly significant that protection reached of power model, therefore described method and circuit are very suitable for the temperature of the power model of control frequency-changeable compressor.
Description of drawings
Fig. 1 is a power controlling module method of temperature flow chart of the present invention;
Fig. 2 is the circuit block diagram of power controlling module temperature of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples only are used for technological scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Working principle of the present invention is, frequency-changeable compressor is when operation, by the control circuit source 50 hertz AC rectification is become DC electrical source, control circuit is reverse into ac power supply with DC electrical source again and is transferred to power model, the ac power supply after the inversion is carried out frequency modulation the handling frequency conversion of power model, the ac power supply after power model is handled frequency modulation is sent to frequency-changeable compressor.The output power of frequency-changeable compressor depends on output current and output voltage, and the output current of frequency-changeable compressor is relevant with electric current alternative frequency in the frequency-changeable compressor, and described power model reaches the purpose of control size of current by the alternative frequency of regulating electric current.Power model can give out heat in the process of transmission electric power, described heat depends primarily on the size that flows through electric current in the power model, and be used in the power model of frequency-changeable compressor power supply, the size of electric current is relevant with the alternative frequency of electric current, therefore by regulating the alternative frequency of alternating current, just can change the size of electric current, and then can change the temperature on power model surface.The present invention is by the temperature on temperature transducer detection power module surface, again temperature signal is sent to control circuit board, control circuit board passes through after the judgement of temperature signal and handling, send control signal to power model, power model is regulated the electric current alternative frequency that outputs in the frequency-changeable compressor according to described control signal, the size of transmission current in the power model can be changed thus, and then the surface temperature of power model can be changed.
Compressor rotary speed (frequency) control is controlled by power model, frequency is high more, the power that power model provides will be high more, and the heating value of power model is also big more, therefore, be provided with a cover reponse system in the present embodiment, promptly by sensor senses temperature of power module height, the feedback electrical signal is given control circuit, and compressor frequency is reduced, thereby reduce electric power, finally reduced the adverse consequences that heating brings.
Compressor frequency reduces, and the air-conditioning effect can reduce in theory, but is actually imperceptible, because the reduction that frequency neither be unlimited, under the situation of impact effect not, reduces heating and damages bad by reducing frequency
As shown in Figure 1, the concrete technical application scheme of power controlling module method of temperature of the present invention may further comprise the steps:
The first step: power model and temperature transducer are installed on the same block of Heat sink, detect the temperature of the power model be used to drive frequency-changeable compressor, convert temperature signal to electrical signal output with temperature transducer;
Second step: control circuit receives the electrical signal of temperature transducer output, and described control circuit is according to described electrical signal output instruction signal;
The 3rd step: the command signal of power model reception control circuit output, the described command signal adjustment of power model foundation outputs to the frequency of supply of frequency-changeable compressor, and the change of described frequency of supply is used for the temperature of control rate module.
In this enforcement, the frequency of supply that power model outputs to frequency-changeable compressor according to described command signal adjustment comprises: the temperature that detects power model when temperature transducer is during less than 79 degrees centigrade, and the frequency of supply of frequency-changeable compressor is not restricted.
Power model comprises according to the frequency of supply that described command signal adjustment outputs to frequency-changeable compressor: the temperature that detects power model when temperature transducer is more than or equal to 79 degrees centigrade, and during less than 85 degrees centigrade, described power model is adjusted into 1 hertz of rising in per 20 seconds to the frequency of supply of frequency-changeable compressor.
Power model comprises according to the frequency of supply that described command signal adjustment outputs to frequency-changeable compressor: the temperature that detects power model when temperature transducer is more than or equal to 85 degrees centigrade, and during less than 90 degrees centigrade, described power model is not adjusted described frequency of supply.
Power model comprises according to the frequency of supply that described command signal adjustment outputs to frequency-changeable compressor: the temperature that detects power model when temperature transducer is more than or equal to 90 degrees centigrade, and during less than 100 degrees centigrade, described power model is adjusted into 1 hertz of decline in per 10 seconds to the frequency of supply of frequency-changeable compressor.
The frequency of supply that power model outputs to frequency-changeable compressor according to described command signal adjustment comprises: the temperature that detects power model when temperature transducer will stop the power supply to frequency-changeable compressor during greater than 100 degrees centigrade.
Described temperature transducer adopts resistance temperature detector, one end of described resistance temperature detector is connected with power supply, the other end is connected with an end of a pull down resistor, the other end ground connection of described pull down resistor is connected with the signal input part of control circuit board between described resistance temperature detector and the pull down resistor.
As shown in Figure 2, in this enforcement, a kind of circuit of power controlling module temperature, described circuit comprises: temperature transducer, the temperature that is used for the detection power module, described temperature transducer is connected with the signal input part of control circuit, and described temperature transducer and described power model are installed on the same block of Heat sink; Control circuit, the output terminal of described control circuit is connected with the input end of described power model, after being used for the input signal of described temperature transducer handled, to described power model output control command; Power model, the signal input part of described power model is connected with control circuit, and the signal output part of described power model is connected with frequency-changeable compressor, is used for according to described control command described inverter compressor being driven;
In this enforcement, described temperature transducer adopts resistance temperature detector, one end of described resistance temperature detector is connected with power supply, the other end is connected with an end of a pull down resistor, be connected with the signal input part of control circuit board between the other end ground connection of described pull down resistor, described resistance temperature detector and pull down resistor.Described control circuit is the control circuit in the air conditioner.
The advantage and the beneficial effect of present embodiment are; the method that power controlling module of the present invention heats up is simple; only on the Heat sink of existing power model, installed temperature transducer additional; and with the output signal of temperature transducer; be connected on the control circuit board of existing power model; therefore; for the whole cost of existing control circuit and power model increase very little; and be easy to realize; since in the present invention described power model drive to as if frequency-changeable compressor; by the frequency conversion of frequency-changeable compressor power supply is regulated; to reach the control that power model is heated up; in air-conditioning system; the change of supply frequency of variable frequency compressor is less relatively to the influence of whole air-conditioning system; and the frequency of supply of change frequency-changeable compressor, for the effect highly significant that protection reached of power model, therefore described method and circuit are very suitable for the temperature of the power model of control frequency-changeable compressor.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of power controlling module method of temperature is characterized in that described method comprises the steps:
S1: power model and temperature transducer are installed on the same block of Heat sink, detect the temperature of the power model be used to drive frequency-changeable compressor, convert temperature signal to electrical signal output with temperature transducer;
S2: control circuit receives the electrical signal of temperature transducer output, and described control circuit is according to described electrical signal output instruction signal;
S3: the command signal of power model reception control circuit output, the described command signal adjustment of power model foundation outputs to the frequency of supply of frequency-changeable compressor, and the change of described frequency of supply is used for the temperature of control rate module.
2, power controlling module method of temperature as claimed in claim 1, it is characterized in that, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is during less than 79 degrees centigrade, and power model will be kept original adjustment to supply frequency of variable frequency compressor.
3, power controlling module method of temperature as claimed in claim 1, it is characterized in that, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is more than or equal to 79 degrees centigrade, and during less than 85 degrees centigrade, described power model is adjusted into 1 hertz of rising in per 20 seconds to the frequency of supply of frequency-changeable compressor.
4, power controlling module method of temperature as claimed in claim 1, it is characterized in that, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is more than or equal to 85 degrees centigrade, and during less than 90 degrees centigrade, described power model is not adjusted described frequency of supply.
5, power controlling module method of temperature as claimed in claim 1, it is characterized in that, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer is more than or equal to 90 degrees centigrade, and during less than 100 degrees centigrade, described power model is adjusted into 1 hertz of decline in per 10 seconds to the frequency of supply of frequency-changeable compressor.
6, power controlling module method of temperature as claimed in claim 1, it is characterized in that, power model to the adjusting method of frequency of supply is: the temperature that detects power model when temperature transducer will stop the power supply to frequency-changeable compressor during greater than 100 degrees centigrade.
7, power controlling module method of temperature as claimed in claim 1, it is characterized in that, described temperature transducer adopts resistance temperature detector, one end of described resistance temperature detector is connected with power supply, the other end is connected with an end of a pull down resistor, the other end ground connection of described pull down resistor is connected with the signal input part of control circuit board between described resistance temperature detector and the pull down resistor.
8, a kind of circuit of power controlling module temperature is characterized in that, described circuit comprises:
Temperature transducer is used for the temperature of detection power module, and described temperature transducer is connected with the signal input part of control circuit, and described temperature transducer and described power model are installed on the same block of Heat sink;
Control circuit, the output terminal of described control circuit is connected with the input end of described power model, after being used for the input signal of described temperature transducer handled, to described power model output control command.
9, the circuit of power controlling module temperature as claimed in claim 8, it is characterized in that, described temperature transducer adopts resistance temperature detector, one end of described resistance temperature detector is connected with power supply, the other end is connected with an end of a pull down resistor, be connected with the signal input part of control circuit between the other end ground connection of described pull down resistor, described resistance temperature detector and pull down resistor.
10, the circuit of power controlling module temperature as claimed in claim 9 is characterized in that, described control circuit is the control circuit in the air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116013A CN101619722A (en) | 2008-07-01 | 2008-07-01 | Method and circuit for controlling temperature of power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116013A CN101619722A (en) | 2008-07-01 | 2008-07-01 | Method and circuit for controlling temperature of power module |
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| CN101619722A true CN101619722A (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810116013A Pending CN101619722A (en) | 2008-07-01 | 2008-07-01 | Method and circuit for controlling temperature of power module |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954023A (en) * | 2014-04-09 | 2014-07-30 | 广东美的集团芜湖制冷设备有限公司 | Control method and controller for compressors of air conditioners and air conditioner |
| CN104393817A (en) * | 2014-10-30 | 2015-03-04 | 广东美的制冷设备有限公司 | Motor driving method and device, air-conditioner and electric appliance |
| CN105371437A (en) * | 2015-12-01 | 2016-03-02 | 青岛海尔空调器有限总公司 | Air conditioner control method |
| CN105783180A (en) * | 2014-12-22 | 2016-07-20 | 广东美的制冷设备有限公司 | Air conditioner and protection method and device of variable frequency module in air conditioner |
| CN106121982A (en) * | 2016-06-27 | 2016-11-16 | 广东美的制冷设备有限公司 | The compressor control method of convertible frequency air-conditioner and device, convertible frequency air-conditioner |
| CN106225186A (en) * | 2016-09-28 | 2016-12-14 | 广东美的制冷设备有限公司 | Frequency-conversion air-conditioning system and the method for controlling heat of power model, device |
| CN106354046A (en) * | 2016-11-18 | 2017-01-25 | 广州视源电子科技股份有限公司 | Control method and device of intelligent power module |
| CN106403486A (en) * | 2016-09-02 | 2017-02-15 | 合肥美的电冰箱有限公司 | Control method and control device for frequency-conversion refrigeration device, and refrigerator |
| CN107013446A (en) * | 2017-04-25 | 2017-08-04 | 合肥华凌股份有限公司 | Control method, VFC plate and the refrigeration plant of frequency-changeable compressor |
| CN110986262A (en) * | 2019-11-15 | 2020-04-10 | 珠海格力电器股份有限公司 | Control method of variable frequency air conditioner, computer readable storage medium and air conditioner |
| CN112248762A (en) * | 2020-09-27 | 2021-01-22 | 深圳市深蓝新能源电气有限公司 | Temperature protection method and device for variable frequency compressor of new energy automobile |
| WO2021036457A1 (en) * | 2019-08-30 | 2021-03-04 | 珠海格力电器股份有限公司 | Power module overheating protection method, computer apparatus, and computer readable storage medium |
| CN113711691A (en) * | 2019-04-08 | 2021-11-26 | 爱德华兹有限公司 | Induction heating method and apparatus |
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2008
- 2008-07-01 CN CN200810116013A patent/CN101619722A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954023A (en) * | 2014-04-09 | 2014-07-30 | 广东美的集团芜湖制冷设备有限公司 | Control method and controller for compressors of air conditioners and air conditioner |
| CN104393817A (en) * | 2014-10-30 | 2015-03-04 | 广东美的制冷设备有限公司 | Motor driving method and device, air-conditioner and electric appliance |
| CN105783180A (en) * | 2014-12-22 | 2016-07-20 | 广东美的制冷设备有限公司 | Air conditioner and protection method and device of variable frequency module in air conditioner |
| CN105371437A (en) * | 2015-12-01 | 2016-03-02 | 青岛海尔空调器有限总公司 | Air conditioner control method |
| CN105371437B (en) * | 2015-12-01 | 2019-05-31 | 青岛海尔空调器有限总公司 | A kind of air conditioning control method |
| CN106121982A (en) * | 2016-06-27 | 2016-11-16 | 广东美的制冷设备有限公司 | The compressor control method of convertible frequency air-conditioner and device, convertible frequency air-conditioner |
| CN106403486A (en) * | 2016-09-02 | 2017-02-15 | 合肥美的电冰箱有限公司 | Control method and control device for frequency-conversion refrigeration device, and refrigerator |
| CN106403486B (en) * | 2016-09-02 | 2019-06-11 | 合肥美的电冰箱有限公司 | Control method, control device and the refrigerator of frequency conversion refrigerating plant |
| CN106225186B (en) * | 2016-09-28 | 2019-07-30 | 广东美的制冷设备有限公司 | Frequency-conversion air-conditioning system and its heat generation control method of power module, device |
| CN106225186A (en) * | 2016-09-28 | 2016-12-14 | 广东美的制冷设备有限公司 | Frequency-conversion air-conditioning system and the method for controlling heat of power model, device |
| CN106354046A (en) * | 2016-11-18 | 2017-01-25 | 广州视源电子科技股份有限公司 | Control method and device of intelligent power module |
| CN107013446A (en) * | 2017-04-25 | 2017-08-04 | 合肥华凌股份有限公司 | Control method, VFC plate and the refrigeration plant of frequency-changeable compressor |
| CN113711691A (en) * | 2019-04-08 | 2021-11-26 | 爱德华兹有限公司 | Induction heating method and apparatus |
| WO2021036457A1 (en) * | 2019-08-30 | 2021-03-04 | 珠海格力电器股份有限公司 | Power module overheating protection method, computer apparatus, and computer readable storage medium |
| CN110986262A (en) * | 2019-11-15 | 2020-04-10 | 珠海格力电器股份有限公司 | Control method of variable frequency air conditioner, computer readable storage medium and air conditioner |
| CN112248762A (en) * | 2020-09-27 | 2021-01-22 | 深圳市深蓝新能源电气有限公司 | Temperature protection method and device for variable frequency compressor of new energy automobile |
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Application publication date: 20100106 |