CN208241392U - Charging circuit and air conditioner comprising anti-short-circuit protection circuit - Google Patents
Charging circuit and air conditioner comprising anti-short-circuit protection circuit Download PDFInfo
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- CN208241392U CN208241392U CN201820835901.6U CN201820835901U CN208241392U CN 208241392 U CN208241392 U CN 208241392U CN 201820835901 U CN201820835901 U CN 201820835901U CN 208241392 U CN208241392 U CN 208241392U
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Abstract
The utility model provides a kind of charging circuit comprising anti-short-circuit protection circuit, it include: three phase mains, rectification module, inverter module, second electric-controlled switch, first electric-controlled switch and cement resistor in parallel, third electric-controlled switch, photoelectrical coupler, main power source system, capacitance module, the input terminal of rectification module is connect with three phase mains, the input terminal of inverter module and the output end of rectification module connect, first electric-controlled switch and cement resistor in parallel is arranged in a wherein phase for three phase mains or the DC side of rectification module, second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains, third electric-controlled switch is connected with cement resistor, the output end of photoelectrical coupler is connect with third electric-controlled switch, main power source system is connect with the input terminal of the photoelectrical coupler, capacitance module is connected in parallel on rectification module and inversion Between module, for storing voltage energy.The problem of the utility model can be to avoid kindling, and the circuit structure of the utility model is simple, it is at low cost.
Description
Technical field
The utility model relates to household electrical appliance field of circuit technology, in particular to a kind of filling comprising anti-short-circuit protection circuit
Circuit and air conditioner.
Background technique
When connecting AC power source, AC power source charges to DC capacitor after rectification module household electrical appliance, charging electricity
Current-limiting resistance and relay are generally included in road, to limit the enormous impact electric current that may be generated in a short time, are avoided to family
Electrical appliance or other electrical equipments damage.Fig. 1 is three phase mains charging circuit topology schematic diagram in the prior art, such as
Shown in Fig. 1, three phase mains charging circuit includes current-limiting resistance and relay K1, wherein if current-limiting resistance is using thermistor
PTC can have the problems such as off-capacity, high pressure resistant, at high cost, therefore generally use powerful cement resistor.But in this way
There are a very big security risks, once short circuit occurs in late-class circuit, cement resistor, which bears high current, to generate heat rapidly simultaneously
Burning, occurred in the past individual air-conditionings fight and burn the hazard events such as user house.Therefore, it is necessary to existing charging circuit
It improves.
Utility model content
In view of this, the utility model is directed to a kind of charging circuit comprising anti-short-circuit protection circuit, once occur
Short circuit, cement resistor circuit will disconnect immediately, avoid the possibility that fire occurs.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of charging circuit comprising anti-short-circuit protection circuit, comprising:
Three phase mains；
Rectification module, input terminal are connect with three phase mains；
The output end of inverter module, input terminal and rectification module connects；
Cement resistor, is arranged in a wherein phase for three phase mains or the DC side of rectification module；
First electric-controlled switch, it is in parallel with cement resistor；
Second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains；
Third electric-controlled switch, connects with cement resistor；
Photoelectrical coupler, output end are connect with third electric-controlled switch；
Main power source system is connect with the input terminal of the photoelectrical coupler；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
Further, further includes:
Secondary power system is connect with third electric-controlled switch, is powered for third electric-controlled switch.
Further, further includes:
MCU main control module is connected between the input terminal of the photoelectrical coupler and main power source system.
Further, further includes:
Resistance pressure-dividing network, one end are connect with capacitance module, and the other end is connect with MCU main control module.
Further, resistance pressure-dividing network includes:
First resistor module, first end are connect with capacitance module, and second end is connect with MCU main control module,
Second resistance module, first end are connect with the second end of first resistor module, second end ground connection.
Further, the capacitance module includes concatenated first capacitor and the second capacitor.
Further, further includes:
3rd resistor module, it is in parallel with first capacitor；
4th resistive module, it is in parallel with the second capacitor.
Further, the cement resistor is arranged in the R phase of three phase mains, and second electric-controlled switch is arranged in three-phase
In the S phase of power supply.
Compared with the existing technology, the charging circuit described in the utility model comprising anti-short-circuit protection circuit has following excellent
Gesture:
(1) the utility model connects a photoelectrical coupler by cement resistor one electric-controlled switch of series connection, electric-controlled switch, once
Short circuit occurs, photoelectrical coupler no signal is transferred to above-mentioned electric-controlled switch, and electric-controlled switch disconnects immediately, and cement resistor is not subjected to
High current, the problem of avoiding kindling.
(2) circuit structure of the utility model is simple, at low cost.
The another object of the utility model is to propose a kind of charging circuit comprising anti-short-circuit protection circuit, prevents short circuit
Cause the hazard events such as fire.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of charging circuit comprising anti-short-circuit protection circuit characterized by comprising
Single phase poaer supply；
Rectification module, input terminal are connect with single phase poaer supply；
The output end of inverter module, input terminal and rectification module connects；
Exchange side or the DC side of rectification module is arranged in cement resistor；
First electric-controlled switch, it is in parallel with cement resistor；
Third electric-controlled switch, connects with cement resistor；
Photoelectrical coupler, output end are connect with third electric-controlled switch；
Main power source system is connect with the input terminal of the photoelectrical coupler；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
Possessed advantage is identical compared with the existing technology with above-mentioned charging circuit for the charging circuit, no longer superfluous herein
It states.
The another object of the utility model is to propose a kind of air conditioner, prevents short circuit from causing the hazard events such as fire.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of air conditioner, the charging circuit including as described above including anti-short-circuit protection circuit.
Possessed advantage is identical compared with the existing technology with above-mentioned charging circuit for the air conditioner, and details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is prior art three phase mains charging circuit topology schematic diagram.
Fig. 2 is the charging circuit topology schematic diagram that the utility model first embodiment includes anti-short-circuit protection circuit.
Fig. 3 is the charging circuit topology schematic diagram that the utility model second embodiment includes anti-short-circuit protection circuit.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In a certain embodiment of the utility model, a kind of charging circuit comprising anti-short-circuit protection circuit is provided, is wrapped
It includes:
Three phase mains；
Rectification module, input terminal are connect with three phase mains；
The output end of inverter module, input terminal and rectification module connects；
Cement resistor, is arranged in a wherein phase for three phase mains or the DC side of rectification module；
First electric-controlled switch, it is in parallel with cement resistor；
Second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains；
Third electric-controlled switch, connects with cement resistor；
Photoelectrical coupler, output end are connect with third electric-controlled switch；
Main power source system is connect with the input terminal of the photoelectrical coupler；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
In another embodiment, a kind of charging circuit comprising anti-short-circuit protection circuit is provided, comprising:
Single phase poaer supply；
Rectification module, input terminal are connect with single phase poaer supply；
The output end of inverter module, input terminal and rectification module connects；
Exchange side or the DC side of rectification module is arranged in cement resistor；
First electric-controlled switch, it is in parallel with cement resistor；
Third electric-controlled switch, connects with cement resistor；
Photoelectrical coupler, output end are connect with third electric-controlled switch；
Main power source system is connect with the input terminal of the photoelectrical coupler；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
As can be seen from the above-described embodiment, for cement resistor, the exchange side of rectification module can be located at, can also be located at
The DC side of rectification module.
In a certain embodiment, the charging circuit comprising anti-short-circuit protection circuit further includes secondary power system, with third
Electric-controlled switch connection, powers for third electric-controlled switch；Secondary power system takes electricity by power supply and zero curve.
In a certain embodiment, the charging circuit comprising anti-short-circuit protection circuit further includes MCU main control module, is connected to
Between the input terminal and main power source system of the photoelectrical coupler, electric signal is provided by main power source system and passes through MCU main control module
Reach photoelectrical coupler.On the other hand, main power source system is connected on the route between rectification module and inverter module, main power source
System generation system working power, the governor circuit constituted to MCU and peripheral circuit are powered.
In a certain embodiment, the charging circuit comprising anti-short-circuit protection circuit further includes first resistor module and the second electricity
Module is hindered, resistance pressure-dividing network is formed, for carrying out partial pressure detection, the first end and capacitor of first resistor module to capacitance module
The first end of module connects, and second end is connect with MCU main control module, first end and the first resistor module of second resistance module
Second end connection, second end ground connection.Wherein, the second end ground connection of capacitance module.
In addition, capacitance module may include concatenated first capacitor and the second capacitor, each capacitor distinguishes parallel resistance mould
Block is divided.
As can be seen from the above-described embodiment, it for the type of power supply, can be single phase poaer supply, be also possible to three phase mains,
When above-mentioned power supply is single phase poaer supply, it is not provided with the second electric-controlled switch；When above-mentioned power supply is three phase mains, cement resistor series connection
In a wherein phase for three phase mains, the second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains, needs
It is noted that cement resistor and the second electric-controlled switch are located in the different phases of three phase mains.First, second, third automatically controlled opens
Pass can be relay, field-effect tube or triode, it should be apparent to a person skilled in the art that the type of electric-controlled switch is not
It is confined to this, as long as can be realized the state switching of open and close.
In a certain embodiment, the utility model additionally provides a kind of air conditioner comprising as described above short comprising preventing
The charging circuit of road protection circuit.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
First embodiment: what the first electric-controlled switch in parallel and cement resistor were located at rectification module exchanges side
Fig. 2 is the charging circuit topology schematic diagram that the utility model first embodiment includes anti-short-circuit protection circuit.
As shown in Fig. 2, in the present embodiment, the second electric-controlled switch K2 is connected in the S phase of three phase mains, and cement resistor R1 is connected on three
In the R phase of phase power supply, the first electric-controlled switch K1 is in parallel with cement resistor R1, and third electric-controlled switch K3 connects with cement resistor R1,
The output end of photoelectrical coupler is connect with third electric-controlled switch K3, and the input terminal of photoelectrical coupler passes through MCU main control module and master
Power-supply system connection, main power source system are connected on the route between rectification module and inverter module.
Secondary power system is third electric-controlled switch K3 power supply, and secondary power system takes to the phase and zero curve of three phase mains
Electricity.
It is connected in parallel between three phase rectifier module and three-phase inversion module after first capacitor C4 and the second capacitor C5 series connection, the 4th
Resistance R4 is in parallel with first capacitor C4, and the 5th resistance R5 is in parallel with the second capacitor C5, also, the second capacitor C5 is grounded.First electricity
Hold C4 and the second capacitor C5 and forms capacitance module.
The first end of first resistor R6 is connected to the first end of capacitance module, and second end is connect with MCU main control module, and second
The first end of resistance R7 is connect with the second end of first resistor R6, second end ground connection.First resistor R6, second resistance R7 composition electricity
Potential-divider network is hindered, for carrying out partial pressure detection to capacitance module, and result is will test and is transmitted to MCU main control module.
In the present embodiment, the specific work process of the charging circuit comprising anti-short-circuit protection circuit is as follows:
When normal work, the first electric-controlled switch K1, the second electric-controlled switch K2 are attracted, and third electric-controlled switch K3, which is in, is attracted shape
State, so as to energy saving.Input terminal, that is, diode side of photoelectrical coupler is connected to the MCU master control mould by main power source system power supply
Block.When short circuit occurs, main power source system powers off immediately, and photoelectrical coupler no signal is transferred to third electric-controlled switch K3, and at this time the
Three electric-controlled switch K3 are disconnected immediately, and cement resistor R1 is not subjected to high current, therefore avoid kindling, prevent short circuit from causing fire
Equal hazard events.
On the other hand, such circuit structure is simple, at low cost.
In the present embodiment, the first, second, third electric-controlled switch is relay.
Second embodiment: the first electric-controlled switch in parallel and cement resistor are located at the DC side of rectification module
Fig. 3 is the charging circuit topology schematic diagram that the utility model second embodiment includes anti-short-circuit protection circuit.
As shown in figure 3, in the present embodiment, compared with first embodiment, the difference of the present embodiment charging circuit is:
Cement resistor R1 is connected on the DC side of three phase rectifier module, and the first electric-controlled switch K1 is in parallel with cement resistor R1.
In the present embodiment, the specific work process of the charging circuit comprising anti-short-circuit protection circuit is as follows:
When normal work, the first electric-controlled switch K1, the second electric-controlled switch K2 are attracted, and third electric-controlled switch K3, which is in, is attracted shape
State, so as to energy saving.Input terminal, that is, diode side of photoelectrical coupler is connected to the MCU master control mould by main power source system power supply
Block.When short circuit occurs, main power source system powers off immediately, and photoelectrical coupler no signal is transferred to third electric-controlled switch K3, and at this time the
Three electric-controlled switch K3 are disconnected immediately, and cement resistor R1 is not subjected to high current, therefore avoid kindling, prevent short circuit from causing fire
Equal hazard events.
In order to achieve the purpose that brief description, any technical characteristic narration for making same application in above-mentioned first embodiment
All and in this, without repeating identical narration.
So far, attached drawing is had been combined the utility model is described in detail.According to above description, those skilled in the art
The charging circuit that member should include anti-short-circuit protection circuit to the utility model has clear understanding.The utility model can be kept away
Exempt to catch fire, prevents the hazard events such as fire, and the circuit structure of the utility model is simple, it is at low cost.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of charging circuit comprising anti-short-circuit protection circuit characterized by comprising
Three phase mains；
Rectification module, input terminal are connect with three phase mains；
The output end of inverter module, input terminal and rectification module connects；
Cement resistor, is arranged in a wherein phase for three phase mains or the DC side of rectification module；
First electric-controlled switch, it is in parallel with cement resistor；
Second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains；
Third electric-controlled switch, connects with cement resistor；
Photoelectrical coupler, output end are connect with third electric-controlled switch；
Main power source system is connect with the input terminal of the photoelectrical coupler；
Capacitance module is connected in parallel between rectification module and inverter module.
2. a kind of charging circuit comprising anti-short-circuit protection circuit characterized by comprising
Single phase poaer supply；
Rectification module, input terminal are connect with single phase poaer supply；
The output end of inverter module, input terminal and rectification module connects；
Exchange side or the DC side of rectification module is arranged in cement resistor；
First electric-controlled switch, it is in parallel with cement resistor；
Third electric-controlled switch, connects with cement resistor；
Photoelectrical coupler, output end are connect with third electric-controlled switch；
Main power source system is connect with the input terminal of the photoelectrical coupler；
Capacitance module is connected in parallel between rectification module and inverter module.
3. charging circuit according to claim 1 or 2, which is characterized in that further include:
Secondary power system is connect with third electric-controlled switch, is powered for third electric-controlled switch.
4. charging circuit according to claim 1 or 2, which is characterized in that further include:
MCU main control module is connected between the input terminal of the photoelectrical coupler and main power source system.
5. charging circuit according to claim 4, which is characterized in that further include:
Resistance pressure-dividing network, one end are connect with capacitance module, and the other end is connect with MCU main control module.
6. charging circuit according to claim 5, which is characterized in that resistance pressure-dividing network includes:
First resistor module, first end are connect with capacitance module, and second end is connect with MCU main control module,
Second resistance module, first end are connect with the second end of first resistor module, second end ground connection.
7. charging circuit according to claim 1 or 2, which is characterized in that the capacitance module includes concatenated first electricity
Hold and the second capacitor.
8. charging circuit according to claim 7, which is characterized in that further include:
3rd resistor module, it is in parallel with first capacitor；
4th resistive module, it is in parallel with the second capacitor.
9. charging circuit according to claim 1, which is characterized in that the R phase of three phase mains is arranged in the cement resistor
On, second electric-controlled switch is arranged in the S phase of three phase mains.
10. a kind of air conditioner, which is characterized in that including the described in any item charging circuits of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820835901.6U CN208241392U (en) | 2018-05-31 | 2018-05-31 | Charging circuit and air conditioner comprising anti-short-circuit protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820835901.6U CN208241392U (en) | 2018-05-31 | 2018-05-31 | Charging circuit and air conditioner comprising anti-short-circuit protection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN208241392U true CN208241392U (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820835901.6U Active CN208241392U (en) | 2018-05-31 | 2018-05-31 | Charging circuit and air conditioner comprising anti-short-circuit protection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539836A (en) * | 2018-05-31 | 2018-09-14 | 奥克斯空调股份有限公司 | Include the charging circuit and air conditioner of anti-short-circuit protection circuit |
-
2018
- 2018-05-31 CN CN201820835901.6U patent/CN208241392U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539836A (en) * | 2018-05-31 | 2018-09-14 | 奥克斯空调股份有限公司 | Include the charging circuit and air conditioner of anti-short-circuit protection circuit |
| CN108539836B (en) * | 2018-05-31 | 2024-03-22 | 奥克斯空调股份有限公司 | Charging circuit comprising short-circuit protection circuit and air conditioner |
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