CN117387241A - Semiconductor refrigerator driving device - Google Patents
Semiconductor refrigerator driving device Download PDFInfo
- Publication number
- CN117387241A CN117387241A CN202311284440.XA CN202311284440A CN117387241A CN 117387241 A CN117387241 A CN 117387241A CN 202311284440 A CN202311284440 A CN 202311284440A CN 117387241 A CN117387241 A CN 117387241A
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- China
- Prior art keywords
- voltage
- semiconductor refrigerator
- converter
- pid
- regulating
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- Pending
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 49
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 230000033228 biological regulation Effects 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 6
- 230000001939 inductive effect Effects 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 68
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005679 Peltier effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
Abstract
A semiconductor refrigerator driving device comprises a DC-DC converter, an inductor L 1 Capacitance C 1 Noise filter network and feedback resistor R f And a gain adjusting resistor R 1 The system comprises a voltage regulation network, a PID regulation circuit, a semiconductor refrigerator and a temperature measuring element. The DC-DC converter provided by the invention avoids adopting an industrial chip, adopts an aerospace-level low-ripple DC-DC converter based on an inductive current continuous mode, has the advantages of aerospace-level device grade, high efficiency, low noise, single particle resistance and irradiation resistance, meets the aerospace application requirements, and has the characteristics of wide refrigeration temperature range and environmental adaptability.
Description
Technical Field
The invention belongs to the field of temperature control, and particularly relates to a semiconductor refrigerator driving device.
Background
The semiconductor refrigerator TEC is integrated in a single photon detector (such as an X-ray detector, an APD detector, a laser and the like), and reduces thermal noise through low-temperature refrigeration, so that the semiconductor refrigerator TEC is a core and key for realizing X-ray single photon energy spectrum detection. And the special driving chip for the TEC integrates the PWM controller and the power driver, has high integration level and high conversion efficiency, but has large noise of PWM switching signals, and forms interference on the single photon detector, so that dark count noise is increased. In addition, the industrial TEC driving chip is packaged by plastic package, so that the quality assurance rejection rate is high, and the design requirement of aerospace model products cannot be met.
Most of the existing temperature control circuits adopt PWM power drivers to realize the driving of a refrigerator. However, this method has the following problems:
(1) The noise is large, and the weak signal detection of the sensor is influenced.
(2) The maximum output voltage of the PWM power driver is a fixed value, and cannot be changed by adjusting the parameters of peripheral circuits, so that the maximum output voltage cannot be matched with the parameters of the semiconductor thermoelectric refrigerator.
In addition, the existing temperature control circuit adopts a linear current source driver, has small noise, low conversion efficiency and large heat consumption, and is not beneficial to the heat dissipation design of a semiconductor refrigerator system.
A single photon detector TEC temperature control method is disclosed by Quantum technology (Beijing) limited company of Kokai Ke, and a DAC is driven by a digital PID to generate a regulating voltage, and the regulating voltage is connected to a feedback pin of a power chip after a resistor is connected in series. However, this method has the following problems:
(1) DAC power-on default value and output impedance influence voltage regulation network, lead to refrigerator drive voltage to appear burr, damage refrigerator.
(2) The PID voltage is connected with a large resistor in series and then is connected to a feedback pin of the power chip, and the resistance value of the series resistor is far larger than that of the voltage regulating resistor, so that the variation range of the driving voltage of the refrigerator is small, and the refrigerating temperature regulating range is influenced.
Disclosure of Invention
The technical solution of the invention is as follows: the semiconductor refrigerator driving device solves the problems of small driving voltage change range of the refrigerator and poor environmental adaptability.
The technical scheme of the invention is as follows: a semiconductor refrigerator driving apparatus comprising: the device comprises a DC-DC converter, a noise filter network, a voltage regulation network, a PID regulation circuit, a semiconductor refrigerator and a temperature measuring element; the PID regulating circuit generates a regulating signal V according to the measured temperature value of the temperature measuring element and the set target temperature value difference pid Then through voltage regulating resistor R 1 Then sent to a DC-DC converter and a feedback resistor R f And the filtered noise is sent to a semiconductor refrigerator for refrigeration.
The DC-DC converter has the characteristics of single particle resistance and irradiation resistance, and realizes the input of V from in To output V out The working voltage of the semiconductor refrigerator is converted by adopting an aerospace level low-ripple DC-DC converter based on an inductive current continuous mode, and the device level is aerospace level.
The noise filter network comprises an inductance L 1 And capacitor C 1 Form LC filter network to realize voltage V out Is filtered and outputs a low-noise driving voltage V tec The method comprises the steps of carrying out a first treatment on the surface of the Inductance L 1 One end of which is connected with the output V of the DC-DC converter out Connected at the other end to a resistor R f One end and a capacitor C 1 One end is connected with a capacitor C 1 The other end is grounded.
The voltage regulating network comprises a feedback resistor R f And a voltage regulating resistor R 1 One end of the feedback resistor Rf is respectively connected with the inductor L 1 And capacitor C 1 The other end is connected with a voltage regulating resistor R 1 V of DC-DC converter fb Are connected; voltage regulating resistor R 1 One end of the resistor is a feedback resistor R f Reference voltage terminal V of DC-DC converter fb The other end is connected with the output V of the PID regulating network pid Are connected.
The voltage regulating network is used for regulating the voltage according to a regulating signal V pid Regulating the drive voltage V tec The output voltage of the DC-DC converter is regulated, the upper limit of the output voltage is set, and the maximum refrigeration voltage parameter of the semiconductor refrigerator is matched with the maximum refrigeration voltage parameter of the semiconductor refrigerator.
The PID regulating circuit is used for generating a regulating signal V according to the difference between the set temperature value and the temperature value measured by the temperature measuring element pid The output of the PID regulating circuit is connected to the voltage regulating resistor R 1 Voltage regulating resistor R 1 And the other end of the DC-DC converter is connected with the reference voltage end V of the DC-DC converter ref Connected to regulate the output voltage V of the DC-DC converter tec I.e., the refrigeration drive voltage of the semiconductor refrigerator.
Said regulation signal V pid And voltage regulating resistor R 1 Directly connected, operating in a voltage driven mode.
Compared with the prior art, the invention has the advantages that:
(1) The PID voltage output by the PID regulating circuit is directly connected with the voltage regulating resistor of the DC-DC converter, so that the variation range of the output voltage of the DC-DC converter is enlarged, the refrigerating temperature regulating range is increased, and the environment adaptability is better.
(2) The DC-DC converter avoids adopting an industrial-level chip, adopts an aerospace-level low-ripple DC-DC converter based on an inductive current continuous mode, has the device level of aerospace level, and has the characteristics of high efficiency, low noise, single particle resistance and radiation resistance, and meets the aerospace application requirements.
Drawings
Fig. 1 is a schematic block diagram of a conventional semiconductor refrigerator driving apparatus.
Fig. 2 is a schematic block diagram of the high-efficiency driving apparatus of the semiconductor refrigerator of the present invention.
Fig. 3 is a graph showing actual measurement noise waveforms of the high efficiency driving apparatus of the semiconductor refrigerator of the present invention.
Detailed Description
As shown in fig. 1 to 3, a semiconductor refrigerator driving apparatus of the present invention includes: the device comprises a DC-DC converter, a noise filter network, a voltage regulation network, a PID regulation circuit, a semiconductor refrigerator and a temperature measuring element; the PID regulating circuit generates a regulating signal V according to the measured temperature value of the temperature measuring element and the set target temperature value difference pid Then through voltage regulating resistor R 1 Then sent to a DC-DC converter and a feedback resistor R f And the filtered noise is sent to a semiconductor refrigerator for refrigeration.
The DC-DC converter has the characteristics of single particle resistance and irradiation resistance, and realizes the input of V from in To output V out The working voltage of the semiconductor refrigerator is converted by adopting an aerospace level low-ripple DC-DC converter based on an inductive current continuous mode, and the device level is aerospace level.
The noise filter network comprises an inductance L 1 And capacitor C 1 Form LC filter network to realize voltage V out Is filtered and outputs a low-noise driving voltage V tec The method comprises the steps of carrying out a first treatment on the surface of the Inductance L 1 One end of which is connected with the output V of the DC-DC converter out Connected at the other end to a resistor R f One end and a capacitor C 1 One end is connected with a capacitor C 1 The other end is grounded.
The voltage regulating network comprises a feedback resistor R f And a voltage regulating resistor R 1 One end of the feedback resistor Rf is respectively connected with the inductor L 1 And capacitor C 1 The other end is connected with a voltage regulating resistor R 1 V of DC-DC converter fb Are connected; voltage regulating resistor R 1 One end of the resistor is a feedback resistor R f Reference voltage terminal V of DC-DC converter fb The other end is connected with the output V of the PID regulating network pid Are connected.
The voltage regulating network is used for regulating the voltage according to a regulating signal V pid Regulating the drive voltage V tec The output voltage of the DC-DC converter is regulated, the upper limit of the output voltage is set, and the maximum refrigeration voltage parameter of the semiconductor refrigerator is matched with the maximum refrigeration voltage parameter of the semiconductor refrigerator.
The PID regulating circuit is used for generating a regulating signal V according to the difference between the set temperature value and the temperature value measured by the temperature measuring element pid The output of the PID regulating circuit is connected to the voltage regulating resistor R 1 Voltage regulating resistor R 1 And the other end of the DC-DC converter is connected with the reference voltage end V of the DC-DC converter ref Connected to regulate the output voltage V of the DC-DC converter tec I.e., the refrigeration drive voltage of the semiconductor refrigerator.
Conventional semiconductor refrigerator driving device, and refrigeration driving signal V tec And PID regulating signal V pid The relation is:
V tec ＝(1+R f /R 1 )V ref +R f /R set V ref -R f /R set V pid
wherein the resistance Rset is far greater than R 1 The voltage regulation range of Vtec is defined by R f /R set And (5) determining.
The high-efficiency driving device of semiconductor refrigerator of the invention, which refrigerates driving signal V tec And PID regulating signal V pid The relation is:
V tec ＝(1+R f /R 1 )V ref -R f /R 1 V pid
V tec the voltage regulating range is R f /R 1 And the voltage regulation range is larger, and the temperature application range is wider.
The semiconductor refrigerator and the temperature measuring element utilize the Peltier effect of semiconductor materials to realize heat absorption at one end and heat release at the other end; the temperature measuring element is arranged at the cold end of the semiconductor refrigerator and measures the temperature of the cold end.
Fig. 2 is a schematic block diagram of the high efficiency driving apparatus of the semiconductor refrigerator of the present invention, which is composed of a DC-DC converter, a noise filter network, a voltage regulating network, a PID regulating circuit, a semiconductor refrigerator and a temperature measuring element. The DC-DC converter realizes voltage input V in To output V out Is based on low ripple D of inductor current continuous mode by using aerospace levelThe C-DC converter has the advantages of aerospace grade device, high efficiency, low noise, single particle resistance and irradiation resistance, and meets the aerospace application requirements. The PID regulator circuit shown outputs a signal V pid And voltage regulating resistor R 1 Directly connected, operating in a voltage driven mode. Compared with a current driving mode of connecting a large resistor in series between the PID regulating signal and the voltage regulating resistor, the voltage driving mode increases the output voltage variation range of the DC-DC converter, increases the refrigerating temperature regulating range and has better environmental adaptability.
Fig. 3 is a measured noise waveform of a high efficiency driving apparatus for a semiconductor refrigerator according to the present invention, which employs an aerospace-level inductor current continuous mode-based low ripple DC-DC converter, and drives the semiconductor refrigerator after passing through an LC noise filter network.
Although the present invention has been described with respect to the preferred embodiments, it is not intended to be limited thereto, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the above embodiments according to the technical matters of the present invention fall within the scope of the technical solution of the present invention.
Claims (7)
1. A semiconductor refrigerator driving apparatus, comprising: the device comprises a DC-DC converter, a noise filter network, a voltage regulation network, a PID regulation circuit, a semiconductor refrigerator and a temperature measuring element; the PID regulating circuit generates a regulating signal V according to the measured temperature value of the temperature measuring element and the set target temperature value difference pid Then through voltage regulating resistor R 1 Then sent to a DC-DC converter and a feedback resistor R f And the filtered noise is sent to a semiconductor refrigerator for refrigeration.
2. The semiconductor refrigerator driving apparatus according to claim 1, wherein the DC-DC converterThe device has the characteristics of single particle resistance and irradiation resistance, and realizes the input of V in To output V out The working voltage of the semiconductor refrigerator is converted by adopting an aerospace level low-ripple DC-DC converter based on an inductive current continuous mode, and the device level is aerospace level.
3. A semiconductor refrigerator driving apparatus according to claim 2, wherein the noise filter network comprises an inductance L 1 And capacitor C 1 Form LC filter network to realize voltage V out Is filtered and outputs a low-noise driving voltage V tec The method comprises the steps of carrying out a first treatment on the surface of the Inductance L 1 One end of which is connected with the output V of the DC-DC converter out Connected at the other end to a resistor R f One end and a capacitor C 1 One end is connected with a capacitor C 1 The other end is grounded.
4. A semiconductor refrigerator driving apparatus according to claim 3, wherein said voltage regulating network comprises a feedback resistor R f And a voltage regulating resistor R 1 One end of the feedback resistor Rf is respectively connected with the inductor L 1 And capacitor C 1 The other end is connected with a voltage regulating resistor R 1 V of DC-DC converter fb Are connected; voltage regulating resistor R 1 One end of the resistor is a feedback resistor R f Reference voltage terminal V of DC-DC converter fb The other end is connected with the output V of the PID regulating network pid Are connected.
5. The semiconductor refrigerator driving apparatus according to claim 4, wherein the voltage adjusting network is based on an adjusting signal V pid Regulating the drive voltage V tec The output voltage of the DC-DC converter is regulated, the upper limit of the output voltage is set, and the maximum refrigeration voltage parameter of the semiconductor refrigerator is matched with the maximum refrigeration voltage parameter of the semiconductor refrigerator.
6. The semiconductor refrigerator driving apparatus as claimed in claim 4, wherein said PID adjusting circuit realizes a temperature according to a settingThe difference between the measured temperature value and the measured temperature value of the temperature measuring element generates a regulating signal V pid The output of the PID regulating circuit is connected to the voltage regulating resistor R 1 Voltage regulating resistor R 1 And the other end of the DC-DC converter is connected with the reference voltage end V of the DC-DC converter ref Connected to regulate the output voltage V of the DC-DC converter tec I.e., the refrigeration drive voltage of the semiconductor refrigerator.
7. The semiconductor refrigerator driving apparatus according to claim 6, wherein the adjusting signal V pid And voltage regulating resistor R 1 Directly connected, operating in a voltage driven mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311284440.XA CN117387241A (en) | 2023-09-28 | 2023-09-28 | Semiconductor refrigerator driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311284440.XA CN117387241A (en) | 2023-09-28 | 2023-09-28 | Semiconductor refrigerator driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117387241A true CN117387241A (en) | 2024-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311284440.XA Pending CN117387241A (en) | 2023-09-28 | 2023-09-28 | Semiconductor refrigerator driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117387241A (en) |
-
2023
- 2023-09-28 CN CN202311284440.XA patent/CN117387241A/en active Pending
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