CN215219529U - TEC temperature automatic control circuit and electrical apparatus - Google Patents
TEC temperature automatic control circuit and electrical apparatus Download PDFInfo
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- CN215219529U CN215219529U CN202121010018.1U CN202121010018U CN215219529U CN 215219529 U CN215219529 U CN 215219529U CN 202121010018 U CN202121010018 U CN 202121010018U CN 215219529 U CN215219529 U CN 215219529U
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Abstract
The utility model relates to a TEC temperature automatic control circuit and electrical apparatus. The TEC automatic temperature control circuit comprises a two-way comparison chip, a direct current driving chip, a first voltage division circuit, a second voltage division circuit and a third voltage division circuit, wherein the third voltage division circuit comprises a thermistor, and the third voltage division circuit comprises a thermistor. The utility model discloses simplify temperature control circuit greatly, solved because of can't provide enough hardware resources and can't carry out temperature control's application scene, guarantee that electronic component work is in reasonable temperature range.
Description
Technical Field
The utility model relates to a temperature control field, more specifically say, relate to a TEC temperature automatic control circuit and electrical apparatus.
Background
The electronic element can normally work only when working at a proper temperature, and the working state of the electronic element is influenced by overhigh or overlow temperature. In the prior art, a temperature control circuit based on a TEC (Thermo Electric Cooler) feeds back data through a temperature sensor, and a control MCU controls the TEC according to the temperature data to achieve a constant temperature effect.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a TEC temperature automatic control circuit and electrical apparatus.
The utility model provides a technical scheme that its technical problem adopted is: the TEC temperature automatic control circuit is constructed and comprises a two-way comparison chip, a direct current driving chip, a first voltage division circuit, a second voltage division circuit and a third voltage division circuit, wherein the third voltage division circuit comprises a thermistor;
a pin 1 of the two-way comparison chip is connected with a pin 1 of the direct current driving chip, a pin 2 of the two-way comparison chip is connected with a voltage division output end of the first voltage division circuit, and a pin 3 of the two-way comparison chip is connected with a voltage division output end of the third voltage division circuit; a pin 4 of the two-way comparison chip is connected with a first end of the first voltage division circuit, and a second end of the first voltage division circuit is connected with a power supply end; a pin 4 of the two-way comparison chip is connected with a first end of the second voltage division circuit, and a second end of the second voltage division circuit is connected with a power supply end; a pin 5 of the two-way comparison chip is connected with a voltage division output end of the third voltage division circuit; a pin 6 of the two-way comparison chip is connected with a voltage division output end of the second voltage division circuit; a pin 7 of the two-way comparison chip is connected with a pin 2 of the direct current driving circuit; the pin 8 of the two-way comparison chip is connected with a power supply end;
a pin 3 and a pin 4 of the direct current driving chip are connected with a first end of the third voltage division circuit, the first end of the third voltage division circuit is connected with a power supply end, and a second end of the third voltage division circuit is grounded; the pin 3 and the pin 4 of the direct current driving chip are connected with the pin 5 of the direct current driving chip; and a pin 6 and a pin 7 of the direct current driving chip are respectively connected with two ends of the TEC, and a pin 8 of the direct current driving chip is grounded.
Further, in the TEC temperature automatic control circuit of the present invention, the first voltage dividing circuit includes a resistor R4 and a resistor R5, the resistor R4 and the resistor R5 are connected in series, the resistor R4 and the connection point of the resistor R5 is the voltage dividing output end of the first voltage dividing circuit.
Further, in the TEC temperature automatic control circuit of the present invention, the second voltage dividing circuit includes a resistor R2 and a resistor R3, the resistor R2 and the resistor R3 are connected in series, the resistor R2 and the connection point of the resistor R3 is the voltage dividing output end of the second voltage dividing circuit.
Further, TEC temperature automatic control circuit in, third voltage division circuit includes resistance R1 and thermistor, resistance R1 with thermistor series connection, resistance R1 with thermistor's tie point does the voltage division output of third voltage division circuit.
Further, in the TEC temperature automatic control circuit of the present invention, the thermistor is a negative temperature coefficient thermistor.
Further, among the TEC temperature automatic control circuit of the present invention, the model of the two-way comparison chip is SGM8770, and the model of the dc driving chip is AT 8837.
Additionally, the utility model also provides an electrical apparatus, include like foretell TEC temperature automatic control circuit. Alternatively, the electric appliance is a 5G communication base station.
Implement the utility model discloses a TEC temperature automatic control circuit and electrical apparatus has following beneficial effect: the utility model discloses simplify temperature control circuit greatly, solved because of can't provide enough hardware resources and can't carry out temperature control's application scene, guarantee that electronic component work is in reasonable temperature range.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic circuit diagram of an automatic TEC temperature control circuit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of an TEC temperature automatic control circuit according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In a preferred embodiment, referring to fig. 1 and fig. 2, the TEC temperature automatic control circuit of this embodiment includes a two-way comparison chip 10, a dc driving chip 20, a first voltage dividing circuit 30, a second voltage dividing circuit 40, and a third voltage dividing circuit 50, where the third voltage dividing circuit 50 includes a thermistor 501.
Pin 1 of the two-way comparison chip 10 is connected with pin 1 of the dc driving chip 20, pin 2 of the two-way comparison chip 10 is connected with the voltage division output end of the first voltage division circuit 30, and pin 3 of the two-way comparison chip 10 is connected with the voltage division output end of the third voltage division circuit 50; a pin 4 of the two-way comparison chip 10 is connected with a first end of the first voltage division circuit 30, and a second end of the first voltage division circuit 30 is connected with a power supply end; a pin 4 of the two-way comparison chip 10 is connected with a first end of a second voltage division circuit 40, and a second end of the second voltage division circuit 40 is connected with a power supply end; a pin 5 of the two-way comparison chip 10 is connected with a voltage division output end of the third voltage division circuit 50; a pin 6 of the two-way comparison chip 10 is connected with a voltage division output end of the second voltage division circuit 40; a pin 7 of the two-way comparison chip 10 is connected with a pin 2 of the direct current driving circuit; and the pin 8 of the two-way comparison chip 10 is connected with a power supply terminal.
The pin 3 and the pin 4 of the dc driving chip 20 are connected to a first end of the third voltage dividing circuit 50, the first end of the third voltage dividing circuit 50 is connected to the power supply terminal, and a second end of the third voltage dividing circuit 50 is grounded; the pin 3 and the pin 4 of the direct current driving chip 20 are connected with the pin 5 of the direct current driving chip 20; and a pin 6 and a pin 7 of the direct current driving chip 20 are respectively connected with two ends of the TEC, and a pin 8 of the direct current driving chip 20 is grounded.
The output voltage of the voltage-dividing output terminal of the first voltage-dividing circuit 30 is V2, the output voltage of the voltage-dividing output terminal of the second voltage-dividing circuit 40 is V1, and the output voltage of the voltage-dividing output terminal of the third voltage-dividing circuit 50 is VT, then the control process of the TEC temperature automatic control circuit is:
if VT > V1 > V2, pin 7 of the dual-way comparison chip 10 outputs a low level, pin 1 of the dual-way comparison chip 10 outputs a high level, pin 6 of the dc driver chip 20 is a low level, and pin 7 of the dc driver chip 20 is a high level. This indicates that the temperature detected by the thermistor 501 is too low and the TEC heats.
If V1 is greater than V2 is greater than VT, pin 7 of the dual-way comparison chip 10 outputs high level, pin 1 of the dual-way comparison chip 10 outputs low level, pin 6 of the dc driver chip 20 is high level, and pin 7 of the dc driver chip 20 is low level. At this time, it is shown that the temperature detected by the thermistor 501 is too high, and the TEC is cooling.
If V1 > VT > V2, pin 7 of the dual-way comparison chip 10 outputs a high level, pin 1 of the dual-way comparison chip 10 outputs a high level, pin 6 of the dc driver chip 20 is a low level, and pin 7 of the dc driver chip 20 is a low level. At this time, it is indicated that the temperature detected by the thermistor 501 is within a reasonable range, the TEC stops working, and neither refrigeration nor heating is performed.
The embodiment greatly simplifies the temperature control circuit, solves the application scene that the temperature control cannot be carried out because enough hardware resources cannot be provided, and ensures that the electronic element works in a reasonable temperature range.
In some embodiments of the TEC temperature automatic control circuit, the first voltage dividing circuit 30 includes a resistor R4 and a resistor R5, the resistor R4 and the resistor R5 are connected in series, and a connection point of the resistor R4 and the resistor R5 is a voltage dividing output terminal of the first voltage dividing circuit 30.
In some embodiments of the TEC temperature automatic control circuit, the second voltage dividing circuit 40 includes a resistor R2 and a resistor R3, the resistor R2 and the resistor R3 are connected in series, and a connection point of the resistor R2 and the resistor R3 is a voltage dividing output terminal of the second voltage dividing circuit 40.
In some embodiments of the TEC temperature automatic control circuit, the third voltage dividing circuit 40 includes a resistor R1 and a thermistor 501, the resistor R1 and the thermistor 501 are connected in series, and a connection point of the resistor R1 and the thermistor 501 is a voltage dividing output terminal of the third voltage dividing circuit 50. Alternatively, the thermistor 501 is a negative temperature coefficient thermistor.
In some embodiments of the TEC temperature automatic control circuit, the model of the two-way comparison chip 10 is SGM8770, and the model of the dc driving chip 20 is AT 8837.
In a preferred embodiment, the electric appliance of the present embodiment includes the TEC temperature automatic control circuit as described in the above embodiments. Alternatively, the appliance is a 5G communication base station.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and implement the present invention accordingly, which can not limit the protection scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.
Claims (8)
1. The TEC automatic temperature control circuit is characterized by comprising a two-way comparison chip (10), a direct current driving chip (20), a first voltage division circuit (30), a second voltage division circuit (40) and a third voltage division circuit (50), wherein the third voltage division circuit (50) comprises a thermistor (501);
a pin 1 of the two-way comparison chip (10) is connected with a pin 1 of the direct current driving chip (20), a pin 2 of the two-way comparison chip (10) is connected with a voltage division output end of the first voltage division circuit (30), and a pin 3 of the two-way comparison chip (10) is connected with a voltage division output end of the third voltage division circuit (50); a pin 4 of the two-way comparison chip (10) is connected with a first end of the first voltage division circuit (30), and a second end of the first voltage division circuit (30) is connected with a power supply end; a pin 4 of the two-way comparison chip (10) is connected with a first end of the second voltage division circuit (40), and a second end of the second voltage division circuit (40) is connected with a power supply end; a pin 5 of the two-way comparison chip (10) is connected with a voltage division output end of the third voltage division circuit (50); a pin 6 of the two-way comparison chip (10) is connected with a voltage division output end of the second voltage division circuit (40); a pin 7 of the two-way comparison chip (10) is connected with a pin 2 of the direct current driving chip; a pin 8 of the two-way comparison chip (10) is connected with a power supply end;
the pin 3 and the pin 4 of the direct current driving chip (20) are connected with a first end of the third voltage division circuit (50), the first end of the third voltage division circuit (50) is connected with a power supply end, and a second end of the third voltage division circuit (50) is grounded; the pin 3 and the pin 4 of the direct current driving chip (20) are connected with the pin 5 of the direct current driving chip (20); and a pin 6 and a pin 7 of the direct current driving chip (20) are respectively connected with two ends of the TEC, and a pin 8 of the direct current driving chip (20) is grounded.
2. The TEC temperature automatic control circuit according to claim 1, characterized in that the first voltage divider circuit (30) comprises a resistor R4 and a resistor R5, the resistor R4 and the resistor R5 are connected in series, and the connection point of the resistor R4 and the resistor R5 is the voltage dividing output end of the first voltage divider circuit (30).
3. The TEC temperature automatic control circuit according to claim 1, characterized in that the second voltage divider circuit (40) comprises a resistor R2 and a resistor R3, the resistor R2 and the resistor R3 are connected in series, and the connection point of the resistor R2 and the resistor R3 is the voltage dividing output terminal of the second voltage divider circuit (40).
4. The TEC temperature automatic control circuit according to claim 1, characterized in that the third voltage division circuit (50) comprises a resistor R1 and a thermistor (501), the resistor R1 and the thermistor (501) are connected in series, and the connection point of the resistor R1 and the thermistor (501) is the voltage division output of the third voltage division circuit (50).
5. The TEC temperature auto-control circuit of claim 4, characterized in that the thermistor (501) is a negative temperature coefficient thermistor.
6. The TEC temperature automatic control circuit of claim 1, characterized in that the model of the two-way comparison chip (10) is SGM8770, and the model of the DC driving chip (20) is AT 8837.
7. An electrical appliance comprising a TEC temperature automatic control circuit according to any one of claims 1 to 6.
8. The appliance according to claim 7, characterized in that it is a 5G communication base station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121010018.1U CN215219529U (en) | 2021-05-12 | 2021-05-12 | TEC temperature automatic control circuit and electrical apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121010018.1U CN215219529U (en) | 2021-05-12 | 2021-05-12 | TEC temperature automatic control circuit and electrical apparatus |
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| CN215219529U true CN215219529U (en) | 2021-12-17 |
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| CN202121010018.1U Active CN215219529U (en) | 2021-05-12 | 2021-05-12 | TEC temperature automatic control circuit and electrical apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238594A (en) * | 2021-05-12 | 2021-08-10 | 世强先进(深圳)科技股份有限公司 | TEC temperature automatic control circuit and electrical apparatus |
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2021
- 2021-05-12 CN CN202121010018.1U patent/CN215219529U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238594A (en) * | 2021-05-12 | 2021-08-10 | 世强先进(深圳)科技股份有限公司 | TEC temperature automatic control circuit and electrical apparatus |
| CN113238594B (en) * | 2021-05-12 | 2024-06-14 | 世强先进(深圳)科技股份有限公司 | TEC temperature automatic control circuit and electrical apparatus |
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