CN108036581A - The electric power system of cooling piece - Google Patents
The electric power system of cooling piece Download PDFInfo
- Publication number
- CN108036581A CN108036581A CN201711240446.1A CN201711240446A CN108036581A CN 108036581 A CN108036581 A CN 108036581A CN 201711240446 A CN201711240446 A CN 201711240446A CN 108036581 A CN108036581 A CN 108036581A
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- CN
- China
- Prior art keywords
- control chip
- cooling piece
- oxide
- semiconductor
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
Abstract
The present invention relates to a kind of electric power system of cooling piece, including step-down/up type translation circuit, temperature sensing circuit and main control chip；The control terminal of the control terminal connection step-down/up type translation circuit of the main control chip, the test side of main control chip connects the temperature sensing circuit connection cooling piece, the input terminal connection external power supply of the step-down/up type translation circuit, the anode of the output terminal connection cooling piece of the step-down/up type translation circuit；Temperature information in the temperature sensing circuit detection cooling piece at heat sink, the temperature information is sent to main control chip；The main control chip reads the temperature information, produces power supplying control signal according to the temperature information, the power supplying control signal is sent to step-down/up type translation circuit；The step-down/up type translation circuit is controlled the voltage exported to the cooling piece according to the power supplying control signal.Which ensure that the condition of power supply needed for cooling piece work, can improve the effect that cooling piece is accordingly freezed.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of electric power system of cooling piece.
Background technology
Cooling piece is the important component of the refrigeration plants such as refrigerator, workability of its refrigeration effect to corresponding refrigeration plant
There can be decisive role.Influence of the electric power system of cooling piece to its refrigeration effect is most important, if the power supply system of cooling piece
There are the states such as power supply instability in system, it is likely that the refrigeration effect of corresponding cooling piece is influenced, so as to influence corresponding refrigeration plant
Working performance.
Traditional cooling piece electric power system has usually only in the range of relatively narrow input voltage or input current to be stablized
Power supply performance, if the input voltage or input current of cooling piece electric power system (are such as less than beyond its corresponding particular range
Corresponding lower limit or higher than corresponding upper limit value etc.), just easily make the poor refrigerating efficiency of cooling piece.
The content of the invention
Based on this, it is necessary to easily ask the technology of cooling piece poor refrigerating efficiency for traditional cooling piece electric power system
A kind of topic, there is provided electric power system of cooling piece.
The electric power system of above-mentioned cooling piece, including step-down/up type translation circuit, temperature sensing circuit and main control chip；
The control terminal of the control terminal connection step-down/up type translation circuit of the main control chip, the test side connection of main control chip
The temperature sensing circuit connects cooling piece, the input terminal connection external power supply of the step-down/up type translation circuit, the lifting
The anode of the output terminal connection cooling piece of pressure type translation circuit；
Temperature information in the temperature sensing circuit detection cooling piece at heat sink, the temperature information is sent to master
Control chip；
The main control chip reads the temperature information, power supplying control signal is produced according to the temperature information, by described in
Power supplying control signal is sent to step-down/up type translation circuit；
The step-down/up type translation circuit carries out the voltage exported to the cooling piece according to the power supplying control signal
Control.
The electric power system of above-mentioned cooling piece, the temperature that can be detected by temperature sensing circuit in cooling piece at heat sink are believed
Breath, the temperature information is sent to main control chip, main control chip is produced power supplying control signal according to above-mentioned temperature information, with
Control step-down/up type translation circuit to power for cooling piece, step-down/up type translation circuit is provided in its corresponding external power supply wider
When the input voltage or input current of scope, the power supply signal of stabilization can be provided for cooling piece, ensure that cooling piece work institute
The condition of power supply needed, so as to improve the effect that cooling piece is accordingly freezed.
In one of the embodiments, the step-down/up type translation circuit includes buck control chip and Power Control electricity
Road；
The buck control chip connects the anode of cooling piece, buck control chip by the power control circuit
Input terminal connection external power supply, buck control chip control terminal connection main control chip control terminal；
The buck control chip receives power supplying control signal, and power supply signal is exported extremely according to the power supplying control signal
The power control circuit；
The power control circuit receives the power supply signal, is powered according to the power supply signal for the cooling piece.
The present embodiment realizes the reading to power supplying control signal by buck control chip, and passes through power control circuit
Realize the control and output to power supply signal, further ensure corresponding electrical stability.
As one embodiment, above-mentioned power control circuit includes first resistor, second resistance, 3rd resistor, the first electricity
Appearance, the second capacitance, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor and inductance；
The input current signal detection resistance anode of the buck control chip passes sequentially through the first resistor and
One capacity earth, the upper end metal-oxide-semiconductor drive end of buck control chip connect the grid of the first metal-oxide-semiconductor, first metal-oxide-semiconductor
Drain electrode passes through the first capacity earth, and the source electrode of the first metal-oxide-semiconductor passes through the source electrode of the second metal-oxide-semiconductor of inductance connection, the source of the first metal-oxide-semiconductor
Pole is also connected with the drain electrode of the 3rd metal-oxide-semiconductor, the first lower end metal-oxide-semiconductor driving of the grid connection buck control chip of the 3rd metal-oxide-semiconductor
End, the source electrode of the 3rd metal-oxide-semiconductor are grounded by 3rd resistor, and the grid of the second metal-oxide-semiconductor is connected on the second of buck control chip
Metal-oxide-semiconductor drive end is held, the drain electrode of the second metal-oxide-semiconductor connects the anode of cooling piece by second resistance, and the drain electrode of the second metal-oxide-semiconductor passes through
Second capacity earth, the drain electrode of the second metal-oxide-semiconductor are also connected with the current signal detection resistance anode of buck control chip, and second
The source electrode of metal-oxide-semiconductor connects the drain electrode of the 4th metal-oxide-semiconductor, the second lower end MOS of the grid connection buck control chip of the 4th metal-oxide-semiconductor
Pipe drive end, the power detection resistance anode of the source electrode connection buck control chip of the 4th metal-oxide-semiconductor.
As one embodiment, the electric power system of above-mentioned cooling piece further includes the 4th resistance, and the 4th resistance is connected to
Between the negative terminal and ground terminal of cooling piece.
In one of the embodiments, the electric power system of above-mentioned cooling piece, can also include D/A converter, the DA conversions
Device is connected between the control terminal of main control chip and the control terminal of step-down/up type translation circuit；
The D/A converter is used to the power supplying control signal that main control chip produces being converted to analog control signal, and exports
To the step-down/up type translation circuit.
After the power supplying control signal that main control chip produces is converted to analog control signal by the present embodiment by D/A converter
Export to the step-down/up type translation circuit, it is ensured that above-mentioned step-down/up type translation circuit reads corresponding power supplying control signal
During fairness.
In one embodiment, the electric power system of above-mentioned cooling piece, can also include a/d converter, the a/d converter
Input terminal connects the temperature sensing circuit, the test side of the output terminal connection main control chip of a/d converter；
The a/d converter is used to the temperature information being converted to digital temperature signal, and exports to main control chip.
As one embodiment, the input terminal of above-mentioned a/d converter is also connected with the output of the step-down/up type translation circuit
End；
The a/d converter reads the power supply signal of step-down/up type translation circuit output, and the power supply signal is converted to number
Word electric signal, and export main control chip.
Temperature information and power supply signal are respectively converted into corresponding digital signal by the present embodiment by a/d converter, then defeated
Enter to main control chip, ensure that reading efficiency of the main control chip to above-mentioned temperature information and power supply signal.
As one embodiment, the electric power system of above-mentioned cooling piece, can also include alarm device, the alarm device connection master
Control the alarm signal output terminal of chip；
The alarm device is alerted after the alarm signal of main control chip output is received；
The main control chip detects the temperature information outside default temperature range, or the power supply signal is pre-
If supply district outside when, generate alarm signal, and export to alarm device.
The present embodiment detects the temperature information outside default temperature range in main control chip, or described supplies telecommunications
Number when outside default supply district, alarm signal can be generated and alerted by alarm device, contribute to related work people
Member knows associated temperature or abnormal electrical power supply information in time.
In one of the embodiments, above-mentioned main control chip is CPLD programmable logic device.
In one of the embodiments, above-mentioned temperature sensing circuit includes thermistor, and the thermistor is fitted in system
The heat sink articulamentum of cold；
The thermistor is used to sense the temperature information at heat sink.
The present embodiment can sense the temperature information at heat sink by thermistor, ensure that detected temperature information is accurate
On the basis of true property, effective simplification has been carried out to above-mentioned temperature sensing circuit.
Brief description of the drawings
Fig. 1 is the electric power system structure diagram of the cooling piece of one embodiment；
Fig. 2 is the step-down/up type translation circuit structure diagram of one embodiment；
Fig. 3 is the power control circuit structure diagram of one embodiment；
Fig. 4 is the power control circuit structure diagram of one embodiment；
Fig. 5 is the electric power system structure diagram of the cooling piece of one embodiment.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Refering to what is shown in Fig. 1, Fig. 1 is the electric power system structure diagram of the cooling piece of one embodiment, including step-down/up type
Translation circuit (buck-boost circuits) 10, temperature sensing circuit 30 and main control chip 50；
The control terminal of the control terminal connection step-down/up type translation circuit 30 of the main control chip 50, the detection of main control chip 50
End connects the temperature sensing circuit 30 and connects cooling piece, the input terminal connection external electrical of the step-down/up type translation circuit 10
Source, the anode of the output terminal connection cooling piece of the step-down/up type translation circuit 10；Specifically, if above-mentioned temperature sensing circuit 30
Including temperature probe, then above-mentioned temperature probe can be arranged on the heat sink of cooling piece；
The temperature sensing circuit 30 detects the temperature information at heat sink in cooling piece, by the temperature information send to
Main control chip 50；
The main control chip 50 reads the temperature information, power supplying control signal is produced according to the temperature information, by institute
Power supplying control signal is stated to send to step-down/up type translation circuit 10；Above-mentioned main control chip 50 can be previously written according to temperature information
Generation includes the current control relational expression of corresponding supply current (such as the linear function relation for being used to determine current value according to temperature value
Formula etc.), above-mentioned temperature information is inputted into above-mentioned current control relational expression and determines that step-down/up type translation circuit 10 inputs cooling piece
Supply current size；Specifically, above-mentioned power supplying control signal can be included according to supply current determined by temperature information
Value, when main control chip 50 read temperature value that the temperature information includes it is excessive when, identified power supply current value can be than working as
Preceding supply current is small, to turn supply voltage of the step-down/up type translation circuit to cooling piece down according to corresponding power supplying control signal,
When the temperature value that the reading temperature information includes is too low, identified power supply current value can be bigger than current supply current,
To tune up supply voltage of the step-down/up type translation circuit to cooling piece according to corresponding power supplying control signal；
The step-down/up type translation circuit 10 according to the power supplying control signal to export to the cooling piece voltage into
Row control.
Above-mentioned step-down/up type translation circuit 10 can parse power supplying control signal, and identification is therein to tune up or adjust
Small to wait power supply regulating command, the supply voltage according to above-mentioned power supply regulating command adjustment to cooling piece, realizes and extremely freezes to output
The control of the voltage of piece.Specifically, step-down/up type translation circuit 10 can select buck Bridging function chip (such as Linear cores
Piece LT1791 etc.) to realize, its acceptable input voltage range direct current can be inputted from 5V to 60V, this wider voltage model
The selection enclosed to exterior power input voltage is more flexible.
The electric power system of cooling piece provided in this embodiment, can be detected in cooling piece by temperature sensing circuit 30 and radiated
Temperature information at piece, the temperature information is sent to main control chip 50, main control chip 50 is produced according to above-mentioned temperature information
Raw power supplying control signal, to control step-down/up type translation circuit 10 to power for cooling piece, makes step-down/up type translation circuit 10 at it
When corresponding external power supply provides the input voltage or input current of relative broad range, the confession telecommunications of stabilization can be provided for cooling piece
Number, the condition of power supply needed for cooling piece work is ensure that, so as to improve the effect that cooling piece is accordingly freezed.
In one of the embodiments, as shown in Fig. 2, above-mentioned step-down/up type translation circuit can include buck control core
Piece 11 and power control circuit 20；
The buck control chip 11 connects the anode of cooling piece 71 by the power control circuit 20, and lifting is voltage-controlled
The input terminal connection external power supply of coremaking piece 11, the control terminal of the control terminal connection main control chip of buck control chip 11；Rise
The input terminal of decompression control chip 11 can also connect external power supply 72；
The buck control chip 11 receives power supplying control signal, and power supply signal is exported according to the power supplying control signal
To the power control circuit 20；
The power control circuit 20 receives the power supply signal, is powered according to the power supply signal for the cooling piece
71。
Above-mentioned buck control chip 11 can specifically use LT1791 chips to realize.Above-mentioned power supply signal can include supplying
After piezoelectric voltage size etc. supplies power information, above-mentioned power control circuit 20 to read above-mentioned power supply signal, the power supply included according to it is electric
Pressure size provides corresponding supply voltage for cooling piece 71.
As one embodiment, refering to what is shown in Fig. 3, the power control circuit include first resistor 21, second resistance 22,
3rd resistor 23, the first capacitance 24, the second capacitance 25, the first metal-oxide-semiconductor 26, the second metal-oxide-semiconductor 27, the 3rd metal-oxide-semiconductor 28, the 4th MOS
Pipe 29 and inductance 31；
The IVINP ends of the buck control chip 10 be (anode of input current signal detection resistance, i.e. external power supply
Input terminal) pass sequentially through the first resistor 21 (input current signal detection resistance) and the first capacitance 24 is grounded, lifting is voltage-controlled
The TG1 ends (the first upper end metal-oxide-semiconductor drive end) of coremaking piece 10 connect the grid of the first metal-oxide-semiconductor 26, the leakage of first metal-oxide-semiconductor 26
Pole is grounded by the first capacitance 24, and the source electrode of the first metal-oxide-semiconductor 26 connects the source electrode of the second metal-oxide-semiconductor 27, the first MOS by inductance 31
The source electrode of pipe 26 is also connected with the drain electrode of the 3rd metal-oxide-semiconductor 28, the BG1 of the grid connection buck control chip 10 of the 3rd metal-oxide-semiconductor 28
Hold (the first lower end metal-oxide-semiconductor drive end), the source electrode of the 3rd metal-oxide-semiconductor 28 is grounded by 3rd resistor 23, the grid of the second metal-oxide-semiconductor 27
The TG2 ends (the second upper end metal-oxide-semiconductor drive end) of buck control chip 10 are connected, the drain electrode of the second metal-oxide-semiconductor 27 passes through the second electricity
The anode of the connection cooling piece 71 of resistance 22, the drain electrode of the second metal-oxide-semiconductor 27 are grounded by the second capacitance 25, the drain electrode of the second metal-oxide-semiconductor 27
It is also connected with the ISP ends (current signal detection resistance anode) of buck control chip 10, the source electrode connection the 4th of the second metal-oxide-semiconductor 27
The drain electrode of metal-oxide-semiconductor 29, BG2 ends (the second lower end metal-oxide-semiconductor driving of the grid connection buck control chip 10 of the 4th metal-oxide-semiconductor 29
End), SNSP ends (anode of power detection resistance, i.e. metal-oxide-semiconductor of the source electrode connection buck control chip 10 of the 4th metal-oxide-semiconductor 29
Resistance detection anode).
As one embodiment, as shown in figure 4, buck control chip 10 further includes Enable Pin EN and control terminal VISEN
(such as current controling end), one end connection external power supply (VIN ends) of above-mentioned first resistor 21, the other end connection of first resistor 21
The IVINN ends (negative terminal of input current signal detection resistance) of buck control chip 10, the drain electrode connection of the first metal-oxide-semiconductor 26
PVIN ends (power voltage input terminal), one end of 3rd resistor 23 connect the source electrode of the 3rd metal-oxide-semiconductor 28,3rd resistor 23 it is another
The SNSN ends (the resistance detection negative terminal of the negative terminal of power detection resistance, i.e. metal-oxide-semiconductor) of end connection buck control chip 10, refrigeration
The anode of piece 71 is also connected with the ISN ends (current signal detection resistance negative terminal) of buck control chip 10.
In the present embodiment, the input terminal of buck control chip 10 is when input voltage range arrives 60V for 5V (volt), phase
The step-down/up type translation circuit answered can be that cooling piece 71 carries out stable power-supplying, the first metal-oxide-semiconductor 26, the second metal-oxide-semiconductor the 27, the 3rd
Metal-oxide-semiconductor 28, the 4th metal-oxide-semiconductor 29 and inductance 31 can provide corresponding Power Control, and first resistor 21 (is come for detection input current
From external power supply VIN) signal resistance, second resistance 22 is the resistance of detection input cooling piece electric current, and 3rd resistor 23 is
The resistance of 28 source current of the 3rd metal-oxide-semiconductor, i.e. power restricting resistor are detected, the first capacitance 24 and the second capacitance 25 are energy storage electricity
Hold.
As shown in figure 4, as one embodiment, the electric power system of above-mentioned cooling piece, can also include the 4th resistance 33, institute
The 4th resistance 33 is stated to be connected between negative terminal and the ground terminal of cooling piece 71.
Above-mentioned 4th resistance 33 can be the minimum resistance of resistance value, and phase is carried out available for the voltage to cooling piece 71 or electric current
It should detect.
Refering to what is shown in Fig. 5, in one embodiment, the electric power system of above-mentioned cooling piece, can also include D/A converter (number
Mode converter) 75, the D/A converter 75 is connected to the control terminal of main control chip 50 and the control of step-down/up type translation circuit 10
Between end；
The D/A converter 75 is used to the power supplying control signal that main control chip 50 produces being converted to analog control signal, and
Export to the step-down/up type translation circuit 10.
It is big that above-mentioned power supplying control signal can include the supply voltage that step-down/up type translation circuit 10 is provided by cooling piece
The control signal such as small, the power supplying control signal that main control chip 50 exports is digital signal, and the digital signal is in D/A converter 75
Corresponding analog signal is converted to, in order to reading of the step-down/up type translation circuit 10 to the power supplying control signal.
The power supplying control signal that main control chip 50 produces is converted to simulation control letter by the present embodiment by D/A converter 75
Exported after number to the step-down/up type translation circuit 10, it is ensured that above-mentioned step-down/up type translation circuit 10 is to corresponding power supply control
Fairness during signal-obtaining.
Refering to what is shown in Fig. 5, in one embodiment, the electric power system of above-mentioned cooling piece, can also include a/d converter (mould
Number converter) 76, the input terminal of the a/d converter 76 connects the temperature sensing circuit 30, and the output terminal of a/d converter 76 connects
Connect the test side of main control chip 50；
The a/d converter 76 is used to the temperature information being converted to digital temperature signal, and exports to main control chip
76。
The temperature information that temperature sensing circuit 30 gathers is converted to by corresponding digital temperature signal by a/d converter 76,
Main control chip 50 is set to obtain the temperature information at cooling piece in time, to include according to the current control relational expression generation being previously written
The power supplying control signal of supply current size, and above-mentioned power supplying control signal is sent to step-down/up type translation circuit 10, carry out
Corresponding power supply control.
As shown in figure 5, as one embodiment, the input terminal of above-mentioned a/d converter 76 is also connected with the step-down/up type conversion
The output terminal of circuit 10；
The a/d converter 76 reads the power supply signal (such as the voltage signal of output) of the output of step-down/up type translation circuit 10,
The power supply signal is converted into digital electric signal, and exports main control chip 50.
Above-mentioned a/d converter 76 can read the power supply signal of its output from step-down/up type translation circuit 10, by above-mentioned confession
Electric signal switchs to, to send to main control chip 50 after corresponding digital signal, allow main control chip 50 to convert electricity to step-down/up type
The power supply signal that road 10 is exported is obtained in time, realizes the monitoring to 10 power supply state of step-down/up type translation circuit, so as to
When the power supply state for monitoring step-down/up type translation circuit 10 is abnormal, related work people is notified by modes such as alarms in time
Member.
Above-mentioned temperature information and power supply signal are respectively converted into corresponding numeral letter by the present embodiment by a/d converter 76
Number, then input and to main control chip 50, ensure that reading efficiency of the main control chip 50 to above-mentioned temperature information and power supply signal.
As shown in figure 5, as one embodiment, the electric power system of above-mentioned cooling piece, can also include alarm device 77, described
Alarm device 77 connects the alarm signal output terminal of main control chip 50；
The alarm device 77 is alerted after the alarm signal of the output of main control chip 50 is received；
The main control chip 50 detects the temperature information outside default temperature range, or the power supply signal exists
When outside default supply district, alarm signal is generated, and export to alarm device 77.
Above-mentioned alarm device 77 can include display alarm module and sound alarm module, and display alarm module can show master
Other information, the sound alarm modules such as alarm signal or working status that control chip 50 is sent can receive main control chip 50
During the alarm signal of output, alerted by modes such as buzzings.
Above-mentioned temperature range can be configured according to the performance characteristic of cooling piece, and supply district can include voltage range
Or current range etc., its can according to step-down/up type translation circuit 10 used by chip features be configured.Above-mentioned temperature letter
Breath shows to make outside default temperature range (the such as larger than upper limit value of temperature range or the lower limit less than temperature range)
Cold occurs abnormal, it is necessary to take other treatment measures, to carry out timely processing to above-mentioned unusual condition；Power supply signal is pre-
If supply district outside (such as voltage value is more than corresponding upper limit value, or voltage value is less than corresponding lower limit etc.), table
There is abnormal electrical power supply in bright current step-down/up type translation circuit 10；There is exception or step-down/up type translation circuit in above-mentioned cooling piece
10 when there is abnormal electrical power supply, and 50 outputting alarm signal of main control chip is alerted to alarm device 77, contributes to relevant staff
Above-mentioned exception information is known in time, and cooling piece and its electric power system are accordingly protected in real time.
In one embodiment, above-mentioned main control chip can be CPLD programmable logic device (Complex
Programmable Logic Device, Complex Programmable Logic Devices).
The present embodiment carries out corresponding power supply control using CPLD programmable logic device to step-down/up type translation circuit, can
To ensure corresponding control efficiency and precise control.
In one embodiment, above-mentioned temperature sensing circuit includes thermistor, and the thermistor is fitted in cooling piece
Heat sink articulamentum；
The thermistor is used to sense the temperature information at heat sink, and the temperature information of sensing is sent to master control core
Piece.
The present embodiment senses the temperature information at heat sink by thermistor, accurate in the temperature information for ensureing detected
On the basis of property, effective simplification has been carried out to above-mentioned temperature sensing circuit.
As one embodiment, the 5th resistance can be concatenated between above-mentioned thermistor and ground terminal, thermistor is connecting
One end of above-mentioned 5th resistance can connect a/d converter, (such as be read by the magnitude of voltage for reading the 5th resistance by a/d converter
Take), the resistance value of thermistor is conversed in main control chip, the linear pass according to corresponding to thermistor resistance value and temperature
System, obtains the temperature information at heat sink.
In one embodiment, the electric power system of above-mentioned cooling piece, can also include radiator, and the radiator is arranged on
The side of cooling piece, the radiator are used for the heat for dispersing cooling piece generation.
Above-mentioned radiator can use the radiators such as ventilating fan, to disperse what cooling piece produced in process of refrigerastion in time
Heat.
The present embodiment accordingly disperses the heat that cooling piece produces by radiator, can reduce cooling piece and work
During due to heat it is excessive caused by loss.
As one embodiment, the side of above-mentioned radiator can also set air cooling system, to strengthen the heat dissipation of radiator
Effect.
Above-mentioned temperature sensing circuit, radiator and air cooling system can form the temperature control system of cooling piece, the temperature control system
The heat at product end where cooling piece can be transmitted on radiator by cooling piece as the conduction-convection problem of cooling piece, will
The heat that cooling piece produces conducts rapidly, has protection cooling piece not cross cause thermal damage.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Cannot therefore it be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of electric power system of cooling piece, it is characterised in that including step-down/up type translation circuit, temperature sensing circuit and master
Control chip；
The main control chip control terminal connection step-down/up type translation circuit control terminal, main control chip test side connection described in
Temperature sensing circuit connects cooling piece, the input terminal connection external power supply of the step-down/up type translation circuit, the step-down/up type
The anode of the output terminal connection cooling piece of translation circuit；
Temperature information in the temperature sensing circuit detection cooling piece at heat sink, the temperature information is sent to master control core
Piece；
The main control chip reads the temperature information, power supplying control signal is produced according to the temperature information, by the power supply
Control signal is sent to step-down/up type translation circuit；
The step-down/up type translation circuit is controlled the voltage exported to the cooling piece according to the power supplying control signal.
2. the electric power system of cooling piece according to claim 1, it is characterised in that the step-down/up type translation circuit includes
Buck control chip and power control circuit；
The buck control chip by the power control circuit connect cooling piece anode, buck control chip it is defeated
Enter end connection external power supply, the control terminal of the control terminal connection main control chip of buck control chip；
The buck control chip receives power supplying control signal, and power supply signal is exported to described according to the power supplying control signal
Power control circuit；
The power control circuit receives the power supply signal, is powered according to the power supply signal for the cooling piece.
3. the electric power system of cooling piece according to claim 2, it is characterised in that the power control circuit includes first
Resistance, second resistance, 3rd resistor, the first capacitance, the second capacitance, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th
Metal-oxide-semiconductor and inductance；
The input current signal detection resistance anode of the buck control chip passes sequentially through the first resistor and the first electricity
Hold ground connection, the first upper end metal-oxide-semiconductor drive end of buck control chip connects the grid of the first metal-oxide-semiconductor, first metal-oxide-semiconductor
Drain electrode passes through the first capacity earth, and the source electrode of the first metal-oxide-semiconductor passes through the source electrode of the second metal-oxide-semiconductor of inductance connection, the source of the first metal-oxide-semiconductor
Pole is also connected with the drain electrode of the 3rd metal-oxide-semiconductor, the first lower end metal-oxide-semiconductor driving of the grid connection buck control chip of the 3rd metal-oxide-semiconductor
End, the source electrode of the 3rd metal-oxide-semiconductor are grounded by 3rd resistor, and the grid of the second metal-oxide-semiconductor is connected on the second of buck control chip
Metal-oxide-semiconductor drive end is held, the drain electrode of the second metal-oxide-semiconductor connects the anode of cooling piece by second resistance, and the drain electrode of the second metal-oxide-semiconductor passes through
Second capacity earth, the drain electrode of the second metal-oxide-semiconductor are also connected with the current signal detection resistance anode of buck control chip, and second
The source electrode of metal-oxide-semiconductor connects the drain electrode of the 4th metal-oxide-semiconductor, the second lower end MOS of the grid connection buck control chip of the 4th metal-oxide-semiconductor
Pipe drive end, the power detection resistance anode of the source electrode connection buck control chip of the 4th metal-oxide-semiconductor.
4. the electric power system of cooling piece according to claim 3, it is characterised in that further include the 4th resistance, the described 4th
Resistance is connected between the negative terminal of cooling piece and ground terminal.
5. the electric power system of cooling piece according to any one of claims 1 to 4, it is characterised in that D/A converter is further included,
The D/A converter is connected between the control terminal of main control chip and the control terminal of step-down/up type translation circuit；
The D/A converter is used to the power supplying control signal that main control chip produces being converted to analog control signal, and exports to institute
State step-down/up type translation circuit.
6. the electric power system of cooling piece according to any one of claims 1 to 4, it is characterised in that a/d converter is further included,
The input terminal of the a/d converter connects the temperature sensing circuit, the detection of the output terminal connection main control chip of a/d converter
End；
The a/d converter is used to the temperature information being converted to digital temperature signal, and exports to main control chip.
7. the electric power system of cooling piece according to claim 6, it is characterised in that the input terminal of the a/d converter is also connected with institute
State the output terminal of step-down/up type translation circuit；
The a/d converter reads the power supply signal of step-down/up type translation circuit output, and the power supply signal is converted to digital electricity
Signal, and export main control chip.
8. the electric power system of cooling piece according to claim 7, it is characterised in that further include alarm device, the alarm device
Connect the alarm signal output terminal of main control chip；
The alarm device is alerted after the alarm signal of main control chip output is received；
The main control chip detects the temperature information outside default temperature range, or the power supply signal is default
When outside supply district, alarm signal is generated, and export to alarm device.
9. the electric power system of cooling piece according to any one of claims 1 to 4, it is characterised in that the main control chip is
CPLD programmable logic device.
10. the electric power system of cooling piece according to any one of claims 1 to 4, it is characterised in that the temperature detection electricity
Road includes thermistor, and the thermistor is fitted in the heat sink articulamentum of cooling piece；
The thermistor is used to sense the temperature information at heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240446.1A CN108036581B (en) | 2017-11-30 | 2017-11-30 | Power supply system of refrigeration piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240446.1A CN108036581B (en) | 2017-11-30 | 2017-11-30 | Power supply system of refrigeration piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108036581A true CN108036581A (en) | 2018-05-15 |
| CN108036581B CN108036581B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711240446.1A Active CN108036581B (en) | 2017-11-30 | 2017-11-30 | Power supply system of refrigeration piece |
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| JP2016129873A (en) * | 2015-01-14 | 2016-07-21 | 三菱電機株式会社 | Peltier element driver and peltier element driving method |
| US20160245557A1 (en) * | 2015-02-24 | 2016-08-25 | Lockheed Martin Corporation | Systems and methods for adaptively controlling a thermoelectric cooler |
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| CN101540474A (en) * | 2009-04-07 | 2009-09-23 | 吉林大学 | Thermostatic controller of digital semiconductor laser |
| CN201615646U (en) * | 2009-12-31 | 2010-10-27 | 中北大学 | Numerical control semiconductor heat radiating device |
| CN201811508U (en) * | 2010-09-28 | 2011-04-27 | 苗金水 | Miniature temperature controller |
| JP2016129873A (en) * | 2015-01-14 | 2016-07-21 | 三菱電機株式会社 | Peltier element driver and peltier element driving method |
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|---|---|
| CN108036581B (en) | 2020-04-03 |
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