CN219871525U - Overcurrent detection circuit structure - Google Patents
Overcurrent detection circuit structure Download PDFInfo
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- CN219871525U CN219871525U CN202223462681.2U CN202223462681U CN219871525U CN 219871525 U CN219871525 U CN 219871525U CN 202223462681 U CN202223462681 U CN 202223462681U CN 219871525 U CN219871525 U CN 219871525U
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- 238000001514 detection method Methods 0.000 title claims abstract description 168
- 238000004891 communication Methods 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Abstract
The utility model discloses an overcurrent detection circuit structure which comprises a main control module, a first overcurrent detection module, a second overcurrent detection module, a communication module, an alarm module, a first temperature detection module, a second temperature detection module and a control module, wherein the first overcurrent detection module and the second overcurrent detection module are connected with the main control module, the first overcurrent detection module and the second overcurrent detection module detect and detect the same current output end, the first temperature detection module is used for detecting the temperature of the first overcurrent detection module, the second temperature detection module is used for detecting the temperature of the second overcurrent detection module, and the first temperature detection module and the second temperature detection module are electrically connected with the main control module. According to the utility model, the first overcurrent detection module and the second overcurrent detection module are controlled to work alternately, so that the problem that the first overcurrent detection module and the second overcurrent detection module cause heat accumulation and change the physical characteristics of internal electronic devices to cause inaccurate detection structure is effectively avoided.
Description
Technical Field
The utility model relates to the technical field of overcurrent detection, in particular to an overcurrent detection circuit structure.
Background
The factor of the overcurrent phenomenon in the circuit of the electronic device is many, and typically, for example, a short circuit phenomenon occurs in the circuit, which causes the circuit resistance to be too small, so that the overcurrent phenomenon occurs when the working current is increased. When the circuit generates an overcurrent phenomenon, the circuit and components can be damaged, so that overcurrent detection is an important content in circuit design; at present, in the traditional overcurrent detection circuit, a diode and a triode are generally adopted for overcurrent detection, and due to the forward conduction voltage of the diode and the conduction voltage between the base electrode and the emitter electrode of the triode, certain errors generally exist in the mass production of the diode and the triode, so that the detection error of the traditional overcurrent detection circuit is large, and the detection precision is low; the forward conduction voltage of the diode and the conduction voltage between the base electrode and the emitter electrode of the triode greatly change along with the ambient temperature; and the error of the detection result is larger.
Disclosure of Invention
In order to solve the problem that in the traditional overcurrent detection circuit, a diode and a triode are commonly adopted for overcurrent detection, and due to the forward conduction voltage of the diode and the conduction voltage between the base electrode and the emitter electrode of the triode, certain errors commonly exist in mass production of the diode and the triode, so that the detection error of the traditional overcurrent detection circuit is large, and the detection precision is low; the forward conduction voltage of the diode and the conduction voltage between the base electrode and the emitter electrode of the triode greatly change along with the ambient temperature; the utility model provides the following technical scheme for solving the technical problem of larger error of a detection result:
the utility model discloses an overcurrent detection circuit structure, which comprises a main control module, a first overcurrent detection module, a second overcurrent detection module, a communication module, an alarm module, a first temperature detection module, a second temperature detection module and a control module, wherein the first overcurrent detection module and the second overcurrent detection module are connected with the main control module; the first overcurrent detection module and the second overcurrent detection module alternately work.
As a preferred technical scheme of the utility model, the intelligent electronic device further comprises a circuit substrate, wherein the main control module, the first overcurrent detection module and the second overcurrent detection module are arranged on the circuit substrate, the communication module and the alarm module are respectively arranged on the circuit substrate, a first radiating block for radiating the first overcurrent detection module is arranged on the circuit substrate, a second radiating block for radiating the second temperature detection module is arranged on the circuit substrate, and the first temperature detection module is arranged on the first radiating block and monitors the temperature of the first radiating block; and the second temperature detection module is arranged on the second radiating block and monitors the temperature of the second radiating block. .
As a preferable technical scheme of the utility model, the first heat dissipation block and the second heat dissipation block are made of aluminum materials.
As a preferable technical scheme of the utility model, the first radiating block and the second radiating block are respectively provided with radiating fins.
As a preferred technical scheme of the utility model, the first overcurrent detection module comprises a voltage conversion circuit and a voltage reference source V1, one end of the voltage conversion circuit is connected with a current input end, one path of the other end of the voltage conversion circuit is connected to the input end of the voltage reference source V1, the other path of the voltage conversion circuit is grounded, and one path of the output end of the voltage reference source V1 is connected to an external power supply end and one path of the output end of the voltage reference source V1 is used for outputting an overcurrent detection signal;
the voltage conversion circuit comprises a current sampling resistor Rs, a resistor R1 and a resistor R2, wherein the current sampling resistor Rs and the resistor R1 are connected in parallel to a current input end, the other end of the current sampling resistor Rs is grounded, the other end of the resistor R1 is connected to a 1 pin of a voltage reference source V1, the resistor R2 is connected between the 1 pin and a 3 pin of the voltage reference source V1, the 3 pin of the voltage reference source V1 is grounded, and one path of the 2 pin of the voltage reference source V1 is connected to an external power end through the resistor R3 and is used for outputting an overcurrent detection signal;
the capacitor C1 is further included, one end of the capacitor C1 is connected to the 1 pin of the voltage reference source V1, and the other end of the capacitor C1 is connected to the 3 pin of the voltage reference source V1.
As a preferred technical scheme of the utility model, the second overcurrent detection module has the same circuit structure as the first overcurrent detection module.
The beneficial effects of the utility model are as follows:
1. according to the overcurrent detection circuit structure, the first overcurrent detection module and the second overcurrent detection module are arranged to detect the same current output end, the first temperature detection module and the second temperature detection module are utilized to detect the working temperatures of the first overcurrent detection module and the second overcurrent detection module, when the temperature in the working process of the first temperature detection module reaches a set shutdown heat dissipation value, the main control module controls the first overcurrent detection module to stop working, and simultaneously controls the second overcurrent detection module to work alternately, so that long-time working is effectively avoided, heat accumulation is caused by the first overcurrent detection module and the second overcurrent detection module, the physical characteristics of internal electronic devices are changed, and errors exist in the detection structure inaccurately; and when the first overcurrent detection module or the second overcurrent detection module detects that the current is excessive, the alarm module generates alarm information and uploads the alarm information to the mobile monitoring terminal through the communication module, and related technicians perform corresponding technical maintenance.
2. According to the overcurrent detection circuit structure, the first overcurrent detection module and the second overcurrent detection module with the specific structures are arranged, the voltage reference source V1 is utilized for overcurrent detection, the error of the reference voltage Uref in the 1 pin of the voltage reference source V1 is small, the reference voltage is provided with internal temperature compensation, the change along with the environmental temperature is small, the detection precision of the overcurrent detection circuit is improved, the consistency of the detection precision is good, the detection result is not easy to have larger error due to temperature transformation, and the stability is high.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of an overcurrent detection circuit according to the present utility model;
FIG. 2 is a circuit of a first overcurrent detection module of an overcurrent detection circuit structure according to the utility model;
fig. 3 is a schematic structural diagram of a circuit substrate with an overcurrent detection circuit structure according to the present utility model.
In the figure: 1. a main control module; 2. a first overcurrent detection module; 3. the second overcurrent detection module; 4. a communication module; 5. an alarm module; 6. a first temperature detection module; 7. a second temperature detection module; 8. a circuit substrate; 9. a first heat dissipation block; 10. and a second heat sink block.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
Examples: as shown in fig. 1-3, the overcurrent detection circuit structure of the utility model comprises a main control module 1, a first overcurrent detection module 2, a second overcurrent detection module 3, a communication module 4 and an alarm module 5, wherein the first overcurrent detection module 2 and the second overcurrent detection module 3 are connected with the main control module 1, detect and detect the same current output end, and also comprise a first temperature detection module 6 for detecting the temperature of the first overcurrent detection module 2, a second temperature detection module 7 for detecting the second overcurrent detection module, and the first temperature detection module 6 and the second temperature detection module 7 are electrically connected with the main control module; the first overcurrent detection module 2 and the second overcurrent detection module 3 alternately work. The first overcurrent detection module 2 and the second overcurrent detection module 3 are arranged to detect the same current output end, the working temperatures of the first overcurrent detection module 2 and the second overcurrent detection module 3 are detected by the first temperature detection module 6 and the second temperature detection module 7, when the temperature in the working process of the first temperature detection module 6 reaches a set shutdown heat dissipation value, the main control module 1 controls the first overcurrent detection module 2 to stop working, and simultaneously controls the second overcurrent detection module 3 to work alternately, so that long-time working is effectively avoided, heat accumulation is caused by the first overcurrent detection module 2 and the second overcurrent detection module 3, the physical characteristics of internal electronic devices are changed, and errors exist in the detection structure; when the first overcurrent detection module 2 or the second overcurrent detection module 3 detects that the current is excessive, the alarm module 5 generates alarm information and uploads the alarm information to the mobile monitoring terminal through the communication module 4, and related technicians perform corresponding technical maintenance.
The first overcurrent detection module 2 and the second overcurrent detection module 3 control the opening or closing work through the main control module 1.
The intelligent control device comprises a main control module 1, a first overcurrent detection module 2, a second overcurrent detection module 3, a communication module 4 and an alarm module 5, and is characterized by further comprising a circuit substrate 8, wherein the main control module 1, the first overcurrent detection module 2 and the second overcurrent detection module 3 are arranged on the circuit substrate 8, a first radiating block 9 for radiating the first overcurrent detection module 2 is arranged on the circuit substrate 8, a second radiating block 10 for radiating the second temperature detection module 7 is arranged on the circuit substrate 8, and the first temperature detection module 6 is arranged on the first radiating block 9 and monitors the temperature of the first radiating block 9; and the second temperature detection module 7 is installed on the second heat dissipation block 10, and monitors the temperature of the second heat dissipation block 10. Through the first heat dissipation block 9 and the second heat dissipation block 10, the heat dissipation efficiency of the first overcurrent detection module 2 and the second overcurrent detection module 3 is effectively improved, and the circuit substrate 8 can be provided with a heat dissipation fan for heat dissipation.
The first heat dissipation block 9 and the second heat dissipation block 10 are made of aluminum.
And radiating fins are arranged on the first radiating block 9 and the second radiating block 10, so that the radiating area is effectively increased.
The first overcurrent detection module 2 comprises a voltage conversion circuit and a voltage reference source V1, one end of the voltage conversion circuit is connected with a current input end, one path of the other end of the voltage conversion circuit is connected to the input end of the voltage reference source V1, the other path of the other end of the voltage conversion circuit is grounded, one path of the output end of the voltage reference source V1 is connected to an external power supply end, and the other path of the output end of the voltage reference source V1 is used for outputting an overcurrent detection signal;
the voltage conversion circuit comprises a current sampling resistor Rs, a resistor R1 and a resistor R2, wherein the current sampling resistor Rs and the resistor R1 are connected in parallel to a current input end, the other end of the current sampling resistor Rs is grounded, the other end of the resistor R1 is connected to a 1 pin of a voltage reference source V1, the resistor R2 is connected between the 1 pin and a 3 pin of the voltage reference source V1, the 3 pin of the voltage reference source V1 is grounded, and one path of the 2 pin of the voltage reference source V1 is connected to an external power end through the resistor R3 and is used for outputting an overcurrent detection signal;
the capacitor C1 is further included, one end of the capacitor C1 is connected to the 1 pin of the voltage reference source V1, and the other end of the capacitor C1 is connected to the 3 pin of the voltage reference source V1.
The second overcurrent detection module 3 has the same circuit structure as the first overcurrent detection module 2.
Through setting up the first overcurrent detection module of specific structure, the overcurrent detection module of second, utilize voltage reference source V1 to carry out overcurrent detection, voltage reference source V1's 1 foot inside reference voltage Uref's error is very little to this reference voltage has inside temperature compensation, and it is very little along with ambient temperature change, has improved overcurrent detection circuit's detection precision, and the uniformity of detection precision is good, is difficult for receiving the transformation of temperature and causes the detection result to have great error, has higher stability.
Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides an overcurrent detection circuit structure, includes main control module (1), and first overcurrent detection module (2), second overcurrent detection module (3) that are connected with main control module (1), communication module (4) and alarm module (5), its characterized in that: the first overcurrent detection module (2) and the second overcurrent detection module (3) are used for detecting the same current output end, the device further comprises a first temperature detection module (6) used for detecting the temperature of the first overcurrent detection module (2) and a second temperature detection module (7) used for detecting the second overcurrent detection module, and the first temperature detection module (6) and the second temperature detection module (7) are electrically connected with the main control module; the first overcurrent detection module (2) and the second overcurrent detection module (3) work alternately.
2. The overcurrent detection circuit structure according to claim 1, further comprising a circuit substrate (8), wherein the main control module (1), the first overcurrent detection module (2) and the second overcurrent detection module (3), the communication module (4) and the alarm module (5) are arranged on the circuit substrate (8), the circuit substrate (8) is provided with a first radiating block (9) for radiating the first overcurrent detection module (2), the circuit substrate (8) is provided with a second radiating block (10) for radiating the second temperature detection module (7), and the first temperature detection module (6) is arranged on the first radiating block (9) and monitors the temperature of the first radiating block (9); and the second temperature detection module (7) is arranged on the second radiating block (10) and monitors the temperature of the second radiating block (10).
3. An overcurrent detection circuit arrangement according to claim 2, wherein the first and second heat sinks (9, 10) are of aluminium material.
4. An overcurrent detection circuit arrangement according to claim 3, wherein the first and second heat sink blocks (9, 10) are each provided with heat sink fins.
5. An overcurrent detection circuit structure according to claim 3, wherein the first overcurrent detection module (2) comprises a voltage conversion circuit and a voltage reference source V1, one end of the voltage conversion circuit is connected with a current input end, the other end of the voltage conversion circuit is connected with the input end of the voltage reference source V1 in one path, the other path is grounded, and the output end of the voltage reference source V1 is connected with an external power supply end in one path and is used for outputting an overcurrent detection signal in the other path;
the voltage conversion circuit comprises a current sampling resistor Rs, a resistor R1 and a resistor R2, wherein the current sampling resistor Rs and the resistor R1 are connected in parallel to a current input end, the other end of the current sampling resistor Rs is grounded, the other end of the resistor R1 is connected to a 1 pin of a voltage reference source V1, the resistor R2 is connected between the 1 pin and a 3 pin of the voltage reference source V1, the 3 pin of the voltage reference source V1 is grounded, and one path of the 2 pin of the voltage reference source V1 is connected to an external power end through the resistor R3 and is used for outputting an overcurrent detection signal;
the capacitor C1 is further included, one end of the capacitor C1 is connected to the 1 pin of the voltage reference source V1, and the other end of the capacitor C1 is connected to the 3 pin of the voltage reference source V1.
6. An overcurrent detection circuit arrangement according to claim 5, characterized in that the second overcurrent detection module (3) is identical to the first overcurrent detection module (2) in circuit arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223462681.2U CN219871525U (en) | 2022-12-24 | 2022-12-24 | Overcurrent detection circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223462681.2U CN219871525U (en) | 2022-12-24 | 2022-12-24 | Overcurrent detection circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219871525U true CN219871525U (en) | 2023-10-20 |
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ID=88325003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223462681.2U Active CN219871525U (en) | 2022-12-24 | 2022-12-24 | Overcurrent detection circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219871525U (en) |
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2022
- 2022-12-24 CN CN202223462681.2U patent/CN219871525U/en active Active
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