CN204557118U - A kind of air conditioner and Intelligent Power Module power-on protective circuit thereof - Google Patents
A kind of air conditioner and Intelligent Power Module power-on protective circuit thereof Download PDFInfo
- Publication number
- CN204557118U CN204557118U CN201520176676.6U CN201520176676U CN204557118U CN 204557118 U CN204557118 U CN 204557118U CN 201520176676 U CN201520176676 U CN 201520176676U CN 204557118 U CN204557118 U CN 204557118U
- Authority
- CN
- China
- Prior art keywords
- protective circuit
- intelligent power
- power module
- module
- circuit breaker
- 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.)
- Active
Links
Landscapes
- Breakers (AREA)
Abstract
The utility model belongs to the resist technology field that powers on, and provides a kind of air conditioner and Intelligent Power Module power-on protective circuit thereof.The utility model comprises the Intelligent Power Module power-on protective circuit of electric protective circuit breaker module and diode by adopting, when powering on by electric protective circuit breaker module be in high-impedance state according to the input/output port of microprocessor, by diode export power on guard signal to forbid enable Intelligent Power Module; And when having powered on; stopped exporting by diode the guard signal that powers on according to the high level that the input/output port of microprocessor exports by upper electric protective circuit breaker module; normal operating conditions is entered with enable Intelligent Power Module; thus misoperation can be there is to the upper electric protection of Intelligent Power Module realization to prevent it; avoid Intelligent Power Module to cause because of misoperation internal circuit impaired, thus solve the problem that cannot realize misoperation protection when powering on to Intelligent Power Module existing for prior art.
Description
Technical field
The utility model belongs to the resist technology field that powers on, and particularly relates to a kind of air conditioner and Intelligent Power Module power-on protective circuit thereof.
Background technology
At present; at Intelligent Power Module (IPM; Intelligent Power Module) application in; as shown in Figure 1; in order to realize overcurrent protection to Intelligent Power Module; the lower brachium pontis output terminal LO of Intelligent Power Module and overcurrent protection pin CP can be connected to the first end of sampling resistor Rs by prior art usually altogether; and the second end ground connection of sampling resistor Rs; Intelligent Power Module judges whether to occur overcurrent by its overcurrent protection pin CP; if so, then quit work at once to realize overcurrent protection.But, when circuit powers on, the voltage of circuit is in from zero to the process of establishing of normal working voltage, the microprocessor controlling Intelligent Power Module work works in nondeterministic statement in power up, now easily cause Intelligent Power Module to occur misoperation because of steering logic entanglement, thus cause Intelligent Power Module to be damaged.Therefore, there is the problem that cannot realize misoperation protection when powering on to Intelligent Power Module in prior art.
Utility model content
The purpose of this utility model is to provide a kind of Intelligent Power Module power-on protective circuit, is intended to the problem that cannot realize misoperation protection when powering on to Intelligent Power Module solved existing for prior art.
The utility model realizes like this, a kind of Intelligent Power Module power-on protective circuit, be connected with Intelligent Power Module and microprocessor, the lower brachium pontis output terminal of described Intelligent Power Module and overcurrent protection pin are connected to the first end of sampling resistor altogether, the second end ground connection of described sampling resistor; The input/output port of described microprocessor is in high-impedance state when powering on, and the input/output port of described microprocessor exports high level after the power-up;
Described Intelligent Power Module power-on protective circuit comprises electric protective circuit breaker module and diode, the controlled end of described upper electric protective circuit breaker module connects the input/output port of described microprocessor, input end and the output terminal of described upper electric protective circuit breaker module are connected the anode of direct supply and described diode respectively, and the negative electrode of described diode connects the overcurrent protection pin of described Intelligent Power Module; When powering on, described upper electric protective circuit breaker module is in high-impedance state according to the input/output port of described microprocessor, is exported power on guard signal to forbid enable described Intelligent Power Module by described diode; When having powered on, described upper electric protective circuit breaker module has stopped, by the guard signal that powers on described in described diode output, entering duty with enable described Intelligent Power Module according to described high level.
The utility model additionally provides a kind of air conditioner, and it comprises Intelligent Power Module, microprocessor and above-mentioned Intelligent Power Module power-on protective circuit.
The utility model comprises the Intelligent Power Module power-on protective circuit of electric protective circuit breaker module and diode by adopting, when powering on by electric protective circuit breaker module be in high-impedance state according to the input/output port of microprocessor, by diode export power on guard signal to forbid enable Intelligent Power Module; And when having powered on; stopped exporting by diode the guard signal that powers on according to the high level that the input/output port of microprocessor exports by upper electric protective circuit breaker module; normal operating conditions is entered with enable Intelligent Power Module; thus misoperation can be there is to the upper electric protection of Intelligent Power Module realization to prevent it; avoid Intelligent Power Module to cause because of misoperation internal circuit impaired, thus solve the problem that cannot realize misoperation protection when powering on to Intelligent Power Module existing for prior art.
Accompanying drawing explanation
Fig. 1 is the current foldback circuit schematic diagram of the Intelligent Power Module involved by prior art;
Fig. 2 is the function structure chart of the Intelligent Power Module power-on protective circuit that the utility model embodiment provides;
Fig. 3 is the exemplary circuit structural drawing of the Intelligent Power Module power-on protective circuit that the utility model embodiment provides;
Fig. 4 is the application example schematic diagram of the Intelligent Power Module power-on protective circuit shown in Fig. 3.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 2 shows the modular structure of the Intelligent Power Module power-on protective circuit that the utility model embodiment provides, and for convenience of explanation, illustrate only the part relevant to the utility model embodiment, details are as follows:
Intelligent Power Module power-on protective circuit 100 is connected with Intelligent Power Module 200 and Micro-processor MCV, and the lower brachium pontis output terminal LO of Intelligent Power Module 200 and overcurrent protection pin CP is connected to the first end of sampling resistor Rs altogether, the second end ground connection of sampling resistor Rs; The input/output port I/O of Micro-processor MCV is in high-impedance state when powering on, and the input/output port I/O of Micro-processor MCV exports high level after the power-up.
Intelligent Power Module power-on protective circuit 100 comprises electric protective circuit breaker module 101 and diode D1; the controlled end of upper electric protective circuit breaker module 101 connects the input/output port I/O of Micro-processor MCV; input end and the output terminal of upper electric protective circuit breaker module 101 are connected the anode of direct supply VCC and diode D1 respectively, and the negative electrode of diode D1 connects the overcurrent protection pin CP of Intelligent Power Module.
When powering on; upper electric protective circuit breaker module 101 is in high-impedance state according to the input/output port I/O of Micro-processor MCV; exported by diode D1 and power on guard signal to forbid enable Intelligent Power Module 200; now Intelligent Power Module 200 quits work because being subject to upper electric protection, and its internal circuit can not be impaired because of misoperation.When having powered on, upper electric protective circuit breaker module 101 has stopped exporting by diode D1 the guard signal that powers on according to the high level that the input/output port I/O of Micro-processor MCV exports, and enters duty with enable Intelligent Power Module 200.
Concrete, as shown in Figure 3, upper electric protective circuit breaker module 101 comprises:
First resistance R1, PNP type triode Q1 and the second resistance R2;
The common contact of the first end of the first resistance R1 and the base stage of PNP type triode Q1 is the controlled end of upper electric protective circuit breaker module 101; the second end ground connection of the first resistance R1; the transmitting of PNP type triode Q1 very powers on the input end of protection switch module 101; the collector of PNP type triode Q1 connects the first end of the second resistance R2, and second end of the second resistance R2 is the output terminal of upper electric protective circuit breaker module 101.
Below in conjunction with principle of work, the Intelligent Power Module power-on protective circuit 100 shown in Fig. 3 is described further:
When powering on, the input/output port I/O of Micro-processor MCV is in high-impedance state, and because the base stage of PNP type triode Q1 is through the first resistance R1 ground connection, so now the base stage of PNP type triode Q1 is low level, then PNP type triode Q1 conducting also exports the overcurrent protection pin CP of high level (the namely above-mentioned guard signal that powers on) to Intelligent Power Module 200 by the second resistance R2 and diode D1, overcurrent protection function is started to trigger Intelligent Power Module 200, thus make Intelligent Power Module 200 forbid enable work when powering on, to reach object Intelligent Power Module 200 being realized to upper electric protection.After having powered on; Micro-processor MCV normally works and exports the base stage of high level to PNP type triode Q1 by its input/output port I/O; then now PNP type triode Q1 enters cut-off state and stops exporting high level, then the overcurrent protection function of Intelligent Power Module 200 is removed thus and entered normal operating conditions.
In addition, in actual application, as shown in Figure 4, the lower brachium pontis output terminal LO of Intelligent Power Module 200 is in parallel with between overcurrent protection pin CP by the 3rd resistance R3, to realize in Intelligent Power Module 200 playing metering function in the process of overcurrent protection.
Based on the upper electrical protection that above-mentioned Intelligent Power Module power-on protective circuit 100 pairs of Intelligent Power Module play; the utility model embodiment still provides a kind of air conditioner, and it comprises Intelligent Power Module 200, Micro-processor MCV and above-mentioned Intelligent Power Module power-on protective circuit 100.
The utility model embodiment comprises the Intelligent Power Module power-on protective circuit 100 of electric protective circuit breaker module 101 and diode D1 by adopting, when powering on by electric protective circuit breaker module 101 be in high-impedance state according to the input/output port I/O of Micro-processor MCV, by diode D1 export power on guard signal to forbid enable Intelligent Power Module 200; And when having powered on; stopped exporting by diode D1 the guard signal that powers on according to the high level that the input/output port I/O of Micro-processor MCV exports by upper electric protective circuit breaker module 101; normal operating conditions is entered with enable Intelligent Power Module 200; thus misoperation can be there is to the upper electric protection of Intelligent Power Module 200 realization to prevent it; avoid Intelligent Power Module 200 to cause because of misoperation internal circuit impaired, thus solve the problem that cannot realize misoperation protection when powering on to Intelligent Power Module existing for prior art.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. an Intelligent Power Module power-on protective circuit, is connected with Intelligent Power Module and microprocessor, and the lower brachium pontis output terminal of described Intelligent Power Module and overcurrent protection pin are connected to the first end of sampling resistor altogether, the second end ground connection of described sampling resistor; The input/output port of described microprocessor is in high-impedance state when powering on, and the input/output port of described microprocessor exports high level after the power-up; It is characterized in that:
Described Intelligent Power Module power-on protective circuit comprises electric protective circuit breaker module and diode, the controlled end of described upper electric protective circuit breaker module connects the input/output port of described microprocessor, input end and the output terminal of described upper electric protective circuit breaker module are connected the anode of direct supply and described diode respectively, and the negative electrode of described diode connects the overcurrent protection pin of described Intelligent Power Module; When powering on, described upper electric protective circuit breaker module is in high-impedance state according to the input/output port of described microprocessor, is exported power on guard signal to forbid enable described Intelligent Power Module by described diode; When having powered on, described upper electric protective circuit breaker module has stopped, by the guard signal that powers on described in described diode output, entering duty with enable described Intelligent Power Module according to described high level.
2. Intelligent Power Module power-on protective circuit as claimed in claim 1, it is characterized in that, described upper electric protective circuit breaker module comprises:
First resistance, PNP type triode and the second resistance;
The common contact of the first end of described first resistance and the base stage of described PNP type triode is the controlled end of described upper electric protective circuit breaker module; second end ground connection of described first resistance; the input end of the very described upper electric protective circuit breaker module of transmitting of described PNP type triode; the collector of described PNP type triode connects the first end of described second resistance, and the second end of described second resistance is the output terminal of described upper electric protective circuit breaker module.
3. an air conditioner, it comprises Intelligent Power Module and microprocessor, it is characterized in that, described air conditioner also comprises Intelligent Power Module power-on protective circuit as claimed in claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176676.6U CN204557118U (en) | 2015-03-26 | 2015-03-26 | A kind of air conditioner and Intelligent Power Module power-on protective circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176676.6U CN204557118U (en) | 2015-03-26 | 2015-03-26 | A kind of air conditioner and Intelligent Power Module power-on protective circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204557118U true CN204557118U (en) | 2015-08-12 |
Family
ID=53832207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520176676.6U Active CN204557118U (en) | 2015-03-26 | 2015-03-26 | A kind of air conditioner and Intelligent Power Module power-on protective circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204557118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110829389A (en) * | 2019-11-18 | 2020-02-21 | 珠海格力电器股份有限公司 | Breaker peak switching protection device and method and air conditioner |
-
2015
- 2015-03-26 CN CN201520176676.6U patent/CN204557118U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110829389A (en) * | 2019-11-18 | 2020-02-21 | 珠海格力电器股份有限公司 | Breaker peak switching protection device and method and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204965104U (en) | Air conditioner and last electricity and current foldback circuit of intelligence power module thereof | |
| CN203674696U (en) | Short circuit protection circuit | |
| CN206524614U (en) | A kind of current-limiting protection controls circuit | |
| CN204882821U (en) | Killer switch state detection circuitry | |
| CN201860094U (en) | Short circuit protection circuit for switch power | |
| CN204557118U (en) | A kind of air conditioner and Intelligent Power Module power-on protective circuit thereof | |
| CN202906437U (en) | Input undervoltage protection circuit | |
| CN209823393U (en) | Power output short-circuit protection circuit | |
| CN110932706A (en) | Control circuit for avoiding shutdown leakage current of intelligent hardware | |
| CN104577961B (en) | Over-pressed power-off protecting circuit | |
| CN205016987U (en) | BMS activates circuit | |
| CN212012131U (en) | Power supply energy-saving management circuit for detecting vibration | |
| CN206041485U (en) | Electrical safety protection circuit of battery | |
| CN205141638U (en) | Switching power supply output short circuit disconnection protection circuit | |
| CN205355776U (en) | Short -circuit protection circuit based on power load is unusual | |
| CN205123698U (en) | MOS exports current foldback circuit | |
| CN210724302U (en) | Low-power consumption power control circuit based on singlechip | |
| CN206250742U (en) | A kind of output short circuit protection circuit | |
| CN210114418U (en) | Door opening and closing protection circuit of dish washing machine | |
| CN206353703U (en) | Battery lamp load short-circuit protection circuit | |
| CN103683215A (en) | Short-circuit protection circuit of electronic switch | |
| CN203491681U (en) | Battery over-discharge protection circuit for computer | |
| CN207896648U (en) | A kind of protection circuit against input over-voltage | |
| CN103179458B (en) | A kind of Set Top Box and antenna supply module thereof | |
| CN208801946U (en) | A kind of power control circuit of OBD terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |