CN206497384U - The protection component and household electrical appliance of power device - Google Patents
The protection component and household electrical appliance of power device Download PDFInfo
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- CN206497384U CN206497384U CN201621324871.XU CN201621324871U CN206497384U CN 206497384 U CN206497384 U CN 206497384U CN 201621324871 U CN201621324871 U CN 201621324871U CN 206497384 U CN206497384 U CN 206497384U
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- power device
- printed board
- thermistor
- protection component
- temperature
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Abstract
The utility model provides the protection component and household electrical appliance of a kind of power device, wherein, the protection component of the power device includes：Printed board；Power device, the pin end of the power device is welded in the printed board；Thermistor, is arranged in the printed board and positioned between the power device and the printed board；And control circuit, the resistance for gathering the thermistor, control signal is generated according to temperature, the load that the control signal is used for the household electrical appliance is controlled.By the technical solution of the utility model, no matter whether power device is fixed on a heat sink, and the temperature of power device can be detected exactly, so as to be protected according to the temperature of power device to power device.
Description
Technical field
The utility model is related to household electrical appliance technical field, in particular to a kind of power device protection component and
A kind of household electrical appliance.
Background technology
In the related art, by detecting the temperature of radiator, carried out according to the temperature of the radiator detected at current limliting
Reason, so as to avoid the temperature of power device too high.But, when power device it is unlocked on a heat sink when, just can not accurately examine
The temperature of power device is measured, and carries out timely current limliting, so as to cause the damage of power device, the use of power device is reduced
Life-span, or even power device is damaged, so as to influence the normal operation of household electrical appliance.
Therefore, the temperature of power device how is detected exactly, it is to avoid by the limit of power device fixation on a heat sink
System, so that carrying out protection to power device turns into technical problem urgently to be resolved hurrily.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art or correlation technique.
Therefore, a purpose of the present utility model is the protection component for proposing a kind of power device.
Another purpose of the present utility model is to propose a kind of household electrical appliance.
To realize at least one above-mentioned purpose, according to the embodiment of first aspect of the present utility model, it is proposed that Yi Zhonggong
The protection component of rate device, for household electrical appliance, the protection component of the power device includes：Printed board；Power device, it is described
The pin end of power device is welded in the printed board；Thermistor, is arranged in the printed board and positioned at the work(
Between rate device and the printed board；And control circuit, the resistance for gathering the thermistor, given birth to according to the temperature
Into control signal, the load that the control signal is used for the household electrical appliance is controlled.
According to the protection component of the power device of embodiment of the present utility model, the pin end of power device is welded on print
After in making sheet, because the pin of power device has certain length, therefore there is certain sky between power device and printed board
Gap, thermistor is arranged on the gap between power device and printed board.So, when power device work produces heat,
The heat of power device can be by air heat radiation to thermistor, because the resistance of thermistor is with the change of temperature
Change, therefore by controlling circuit to gather the resistance of thermistor, to determine temperature-sensitive electricity according to the resistance of the thermistor
The temperature of resistance.Again because the temperature of thermistor can reflect the temperature of power device, it therefore, it can according to thermistor
Temperature detection goes out the temperature of power device, and the load that the temperature further according to power device is generated control signals to household electrical appliance is entered
Row control, for example, when the temperature of power device is more than first threshold, the control signal of the running frequency of generation reduction load,
Or generation control load control signal out of service, so that power device is in state or the place of low power operation
In state out of service, and then avoid because power device is overheated and causes to damage.
In addition, detecting the temperature of power device by setting thermistor between power device and printed board, it is to avoid
Temperature in use sensor detects the temperature of power device, and because the volume of thermistor is smaller, thermistor is arranged on into work(
It is very easy to realize between rate device and printed board, so as to facilitate the batch production of the protection component of the power device, improves production
The production efficiency of product.
According to the protection component of the power device of above-described embodiment of the present utility model, there can also be following technology special
Levy：
According to one embodiment of the present utility model, the power device includes one below or a variety of combinations：IPM、
IGBT, rectifier bridge, diode.
According to the protection component of the power device of embodiment of the present utility model, power device include but is not limited to it is following it
The combination of one or more：IPM (Intelligent Power Module, SPM), IGBT (Insulated Gate
Bipolar Transistor, insulated gate bipolar transistor), rectifier bridge, diode, wherein, the diode not only include inspection
Ripple diode, commutation diode, voltage-regulator diode, switching diode, isolating diode, Schottky diode, light emitting diode,
Silicon switch diode and rotating diode, in addition to fast recovery diode.
According to one embodiment of the present utility model, each temperature-sensitive between the power device and the printed board
The quantity of resistance is one or more.
According to the protection component of the power device of embodiment of the present utility model, the temperature-sensitive between power device and printed board
The quantity of resistance can be one, can also have multiple, so as to detect the temperature of power device exactly.
According to one embodiment of the present utility model, if the power device is IGBT, rectifier bridge or diode, often
The quantity of the thermistor between the individual power device and the printed board is one；If the power device is IPM,
Then the quantity of each thermistor between the power device and the printed board is multiple.
According to the protection component of the power device of embodiment of the present utility model, due to IGBT, rectifier bridge or diode
It is smaller, therefore, the temperature of power device is detected by a thermistor.Because IPM is than larger, it therefore, it can lead to
The temperature of power device can relatively accurately be detected by crossing multiple thermistors, it is of course also possible to pass through a thermistor
To detect the temperature of power device, it can specifically be determined according to the size of power device.
According to one embodiment of the present utility model, if each heat between the power device and the printed board
The quantity of quick resistance is one, then the thermistor is arranged on the center of the relatively described power device in the printed board
Position；It is each described if the quantity of each thermistor between the power device and the printed board is multiple
Thermistor is arranged on position or the default model of the position at the center of the relatively described power device in the printed board
In enclosing.
According to the protection component of the power device of embodiment of the present utility model, because the sites of heat generation of power device is general
Position at the center of power device, therefore, the position at the center for relative power device thermistor being arranged in printed board
Place is put, so as to ensure that the accuracy of the temperature of the power device detected according to the resistance of thermistor.If a power device
There are multiple thermistors between part and printed board, the thermistor can be arranged on the center of the relative power device in printed board
Position at, the surrounding of the position can also be arranged on, for example, the left side of the position, right side, upside or downside, so as to protect
The accuracy of the temperature of the power device detected is demonstrate,proved.
According to one embodiment of the present utility model, the thermistor includes：NTC(Negative Temperature
Coefficient, negative temperature coefficient) resistance and/or PTC (Positive Temperature Coefficient, positive temperature system
Number) resistance.
According to one embodiment of the present utility model, in addition to：Radiator, the portion in addition to pin of the power device
Divide and be arranged on the radiator, the radiator is used to radiate to the power device.
According to the protection component of the power device of embodiment of the present utility model, can also by power device except pin it
Outer part (i.e. the main part of power device) is set on a heat sink, and power device is radiated by radiator, entered
Avoid the temperature of power device too high to one step and cause to damage.It is of course also possible to power device not set on a heat sink.
According to the embodiment of second aspect of the present utility model, it is proposed that a kind of household electrical appliance, including above-mentioned technical proposal
Any one of power device protection component, therefore, the household electrical appliance have and any one of above-mentioned technical proposal institute
The protection component identical technique effect for the power device stated, will not be repeated here.
According to one embodiment of the present utility model, the household electrical appliance include one below or a variety of combinations：Air-conditioning
Device, refrigerator, television set, washing machine.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
Fig. 1 shows the front view of the protection component according to the power device of one embodiment of the present utility model；
Fig. 2 shows the stereogram of the protection component according to the power device of one embodiment of the present utility model；
Fig. 3 shows the principle schematic of the protection component according to the power device of one embodiment of the present utility model.
Wherein, corresponding relations of the Fig. 1 into Fig. 3 between the mark and component names of accompanying drawing is：
The protection component of 100 power devices, 102 printed boards, 104 power devices, 106 thermistors, 108 control circuits,
110 radiators, 200 loads.
Embodiment
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting, this Shen
The feature in embodiment and embodiment please can be mutually combined.
Many details are elaborated in the following description to fully understand the utility model, still, this practicality
New to be different from other modes described here to implement using other, therefore, protection domain of the present utility model is simultaneously
Do not limited by following public specific embodiment.
As depicted in figs. 1 and 2, according to the embodiment of first aspect of the present utility model, it is proposed that a kind of power device
Component 100 is protected, for household electrical appliance, the protection component 100 of the power device includes：Printed board 102；Power device 104,
The pin end of the power device 104 is welded in the printed board 102；Thermistor 106, is arranged on the printed board
On 102 and positioned between the power device 104 and the printed board 102；And control circuit 108, for gathering the heat
The resistance of quick resistance 106, control signal is generated according to the temperature, and the control signal is used for the load to the household electrical appliance
200 are controlled.
According to the protection component 100 of the power device of embodiment of the present utility model, the pin end of power device 104 is welded
After being connected in printed board 102, because the pin of power device 104 has certain length, therefore power device 104 and printed board
There is certain space between 102, thermistor 106 is arranged on the gap between power device 104 and printed board 102.This
Sample, when the work of power device 104 produces heat, the heat of power device 104 can pass through air heat radiation to thermistor 106
On, because the resistance of thermistor 106 changes with the change of temperature, therefore, as shown in figure 3, control circuit 108 is adopted
Collect the resistance of thermistor 106, the temperature of thermistor 106 is determined according to the resistance of the thermistor 106.Again due to temperature-sensitive electricity
The temperature of resistance 106 can reflect the temperature of power device 104, therefore, it can go out work(according to the temperature detection of thermistor 106
The temperature of rate device 104, the temperature further according to power device 104 generates control signal, and control signal is exported to household electric
The load 200 (load 200 can be compressor, blower fan, motor etc.) of device, is controlled with the load 200 to household electrical appliance.Example
Such as, when the temperature of power device 104 is more than first threshold, the control signal of the running frequency of generation reduction load 200, or
Generation control 200 control signals out of service of load, so as to carry out current limliting processing, and then cause power device 104 is in low
Power consumption operation state or in state out of service, it is to avoid due to power device 104 is overheated and cause damage.
In addition, detecting power device 104 by setting thermistor 106 between power device 104 and printed board 102
Temperature, it is to avoid temperature in use sensor detect power device 104 temperature, because the volume of thermistor 106 is smaller, will
Thermistor 106, which is arranged between power device 104 and printed board 102, is very easy to realization, so as to facilitate the power device
The batch production of component 100 is protected, the production efficiency of product is improved.
According to the protection component 100 of the power device of above-described embodiment of the present utility model, there can also be following technology
Feature：
According to one embodiment of the present utility model, the power device 104 includes one below or a variety of combinations：
IPM, IGBT, rectifier bridge, diode.
According to the protection component 100 of the power device of embodiment of the present utility model, power device 104 includes but is not limited to
One below or a variety of combinations：IPM (Intelligent Power Module, SPM), IGBT
(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), rectifier bridge, diode, wherein, should
Diode not only includes detector diode, commutation diode, voltage-regulator diode, switching diode, isolating diode, Schottky two
Pole pipe, light emitting diode, silicon switch diode and rotating diode, in addition to fast recovery diode.
According to one embodiment of the present utility model, each institute between the power device 104 and the printed board 102
The quantity for stating thermistor 106 is one or more.
According to the protection component 100 of the power device of embodiment of the present utility model, power device 104 and printed board 102
Between thermistor 106 quantity can be one, can also have multiple, so as to detect power device exactly
104 temperature.
According to one embodiment of the present utility model, if the power device 104 is IGBT, rectifier bridge or diode,
Then the quantity of each thermistor 106 between the power device 104 and the printed board 102 is one；If described
Power device 104 is IPM, then each thermistor 106 between the power device 104 and the printed board 102
Quantity is multiple.
According to the protection component 100 of the power device of embodiment of the present utility model, due to IGBT, rectifier bridge or two poles
Pipe is smaller, therefore, and the temperature of power device 104 is detected by a thermistor 106.Because IPM is than larger, because
This, can relatively accurately detect the temperature of power device 104 by multiple thermistors 106, it is of course also possible to logical
Cross a thermistor 106 to detect the temperature of power device 104, can specifically be determined according to the size of power device 104.
According to one embodiment of the present utility model, if each between the power device 104 and the printed board 102
The quantity of the thermistor 106 is one, then the thermistor 106 is arranged on relatively described in the printed board 102
The position at the center of power device 104；If the temperature-sensitive electricity each between the power device 104 and the printed board 102
The quantity of resistance 106 is multiple, then each thermistor 106 is arranged on the relatively described power device in the printed board 102
In the preset range of the position at the center of part 104 or the position.
According to the protection component 100 of the power device of embodiment of the present utility model, due to the heating position of power device 104
Put general in the position at the center of power device 104, therefore, thermistor 106 is arranged on the relative power in printed board 102
At the position at the center of device 104, so as to ensure that the temperature of the power device 104 detected according to the resistance of thermistor 106
The accuracy of degree.If there is multiple thermistors 106 between a power device 104 and printed board 102, the thermistor 106 can
At the position at the center of relative power device 104 being arranged in printed board 102, the surrounding of the position can also be arranged on,
For example, the left side of the position, right side, upside or downside, so as to ensure that the accurate of the temperature of the power device 104 detected
Property.
According to one embodiment of the present utility model, the thermistor 106 includes：NTC(Negative
Temperature Coefficient, negative temperature coefficient) resistance and/or PTC (Positive Temperature
Coefficient, positive temperature coefficient) resistance.
According to one embodiment of the present utility model, in addition to：Radiator 110, the power device 104 except pin it
Outer part is arranged on the radiator 110, and the radiator 110 is used to radiate to the power device 104.
, can also removing power device 104 according to the protection component 100 of the power device of embodiment of the present utility model
Part (i.e. the main part of radiator 110) outside pin is arranged on the radiator 110, to pass through 110 pairs of radiator
Power device 104 is radiated, and is further avoided the temperature of power device 104 too high and is caused to damage.It is of course also possible to not
Power device 104 is arranged on radiator 110.
According to the embodiment of second aspect of the present utility model, it is proposed that a kind of household electrical appliance, including above-mentioned technical proposal
Any one of power device protection component, therefore, the household electrical appliance have and any one of above-mentioned technical proposal institute
The protection component identical technique effect for the power device stated, will not be repeated here.
According to one embodiment of the present utility model, the household electrical appliance include one below or a variety of combinations：Air-conditioning
Device, refrigerator, television set, washing machine.
The technical solution of the utility model is described in detail above in association with accompanying drawing, by the technical solution of the utility model,
No matter whether power device is fixed on a heat sink, the temperature of power device can be detected exactly, it is to avoid by power device
Part fixes limitation on a heat sink, so as to be protected according to the temperature of power device to power device.
In the utility model, term " first ", " second " are only used for the purpose of description, and it is not intended that indicating or dark
Show relative importance；Term " multiple " represents two or more.For the ordinary skill in the art, Ke Yigen
Understand concrete meaning of the above-mentioned term in the utility model according to concrete condition.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (9)
1. a kind of protection component of power device, for household electrical appliance, it is characterised in that the protection component bag of the power device
Include：
Printed board；
Power device, the pin end of the power device is welded in the printed board；
Thermistor, is arranged in the printed board and positioned between the power device and the printed board；And
Circuit is controlled, the resistance for gathering the thermistor generates control signal according to temperature, and the control signal is used for
Load to the household electrical appliance is controlled.
2. the protection component of power device according to claim 1, it is characterised in that the power device include it is following it
The combination of one or more：IPM, IGBT, rectifier bridge, diode.
3. the protection component of power device according to claim 2, it is characterised in that
Each the quantity of the thermistor between the power device and the printed board is one or more.
4. the protection component of power device according to claim 3, it is characterised in that
If the power device is IGBT, rectifier bridge or diode, each between the power device and the printed board
The thermistor quantity be one；
If the power device is IPM, the number of each thermistor between the power device and the printed board
Measure to be multiple.
5. the protection component of power device according to claim 4, it is characterised in that
If each the quantity of the thermistor between the power device and the printed board is one, the temperature-sensitive electricity
Resistance is arranged on the position at the center of the relatively described power device in the printed board；
If each the quantity of the thermistor between the power device and the printed board is multiple, each heat
Quick resistance is arranged on position or the preset range of the position at the center of the relatively described power device in the printed board
It is interior.
6. the protection component of power device according to any one of claim 1 to 5, it is characterised in that the temperature-sensitive electricity
Resistance includes：NTC resistance and/or PTC resistor.
7. the protection component of power device according to any one of claim 1 to 5, it is characterised in that also include：
Radiator, the part in addition to pin of the power device is arranged on the radiator, the radiator be used for pair
The power device is radiated.
8. a kind of household electrical appliance, it is characterised in that including：The protection of power device as any one of claim 1 to 7
Component.
9. household electrical appliance according to claim 8, it is characterised in that the household electrical appliance include one below or a variety of
Combination：Air conditioner, refrigerator, television set, washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621324871.XU CN206497384U (en) | 2016-12-05 | 2016-12-05 | The protection component and household electrical appliance of power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621324871.XU CN206497384U (en) | 2016-12-05 | 2016-12-05 | The protection component and household electrical appliance of power device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206497384U true CN206497384U (en) | 2017-09-15 |
Family
ID=59800163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621324871.XU Active CN206497384U (en) | 2016-12-05 | 2016-12-05 | The protection component and household electrical appliance of power device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206497384U (en) |
-
2016
- 2016-12-05 CN CN201621324871.XU patent/CN206497384U/en active Active
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