CN208241389U - Three phase mains charging circuit and air conditioner - Google Patents
Three phase mains charging circuit and air conditioner Download PDFInfo
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- CN208241389U CN208241389U CN201820835261.9U CN201820835261U CN208241389U CN 208241389 U CN208241389 U CN 208241389U CN 201820835261 U CN201820835261 U CN 201820835261U CN 208241389 U CN208241389 U CN 208241389U
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Abstract
The utility model provides a kind of three phase mains charging circuit, it include: three phase mains, rectification module, inverter module, the second electric-controlled switch, current-limiting charging circuit, 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, current-limiting charging circuit is arranged in a wherein phase for three phase mains, second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains, capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.The utility model makes to reduce by the current energy of current-limiting resistance, it is only necessary to compared with the current-limiting resistance of low capacity, while meet high-power applications occasion by the way that current-limiting charging circuit to be arranged in a wherein phase for three phase mains.
Description
Technical field
The utility model relates to household electrical appliance field of circuit technology, in particular to a kind of three phase mains charging circuit and air-conditioning
Device.
Background technique
When connecting AC power source, AC power source charges to electrolytic capacitor after rectification module household electrical appliance, due to electricity
The equivalent internal resistance for solving capacitor is minimum, may cause and generates biggish dash current in a short time, and then can be to the household electrical appliance
Or other electrical equipments damage.For this purpose, current-limiting charging circuit is generally included in charging circuit, it may be in short-term with limitation
The enormous impact electric current of interior generation avoids damaging household electrical appliance or other electrical equipments.Fig. 1 is in the prior art three
Phase power charging circuit topological structure schematic diagram, as shown in Figure 1, three phase mains charging circuit includes current-limiting charging circuit, current limliting
Charging circuit includes thermistor PTC (as current-limiting resistance) and relay K1, wherein thermistor PTC and relay K1 are simultaneously
DC side after rectification module is set after connection, and the electric current that thermistor PTC is born is the total current of three phase mains, this needs
The PTC of large capacity can just be met the requirements, and especially in large-power occasions, the PTC for often leading to not suitable types be can be used.
Therefore, it is necessary to improve to existing charging circuit.
Utility model content
In view of this, the utility model is directed to a kind of three phase mains charging circuit, make the electric current by current-limiting resistance
Energy reduces, and meets high-power applications occasion.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of three phase mains charging circuit, comprising: three phase mains, rectification module, inverter module, the second electric-controlled switch, limit
The input terminal of current charge circuit, capacitance module, rectification module is connect with three phase mains, the input terminal and rectification module of inverter module
Output end connection, current-limiting charging circuit is arranged in a wherein phase for three phase mains, and the second electric-controlled switch is arranged in three-phase electricity
In any one phase in the other two-phase in source；Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage
Energy.
Further, current-limiting charging circuit includes current-limiting resistance, the first electric-controlled switch, current-limiting resistance and the first electric-controlled switch
It is in parallel.
Further, the current-limiting resistance is thermistor PTC or cement resistor.
Further, the first, second electric-controlled switch is relay, field-effect tube or triode.
Further, the capacitance module includes concatenated first capacitor and the second capacitor.
Further, further includes:
First resistor module, it is in parallel with first capacitor；
Second resistance module, it is in parallel with the second capacitor.
Further, the first resistor module includes first resistor, and the second resistance module includes second resistance.
Further, the current-limiting charging circuit is arranged in the R phase of three phase mains, and the second electric-controlled switch setting exists
In the S phase of three phase mains.
Further, the course of work of the three phase mains charging circuit are as follows: when powering on, at the first, second electric-controlled switch
In off-state, the R phase and T-phase of three phase mains by reaching rectification module after current-limiting resistance, rectification module by AC rectification at
Direct current charges to capacitance module；Charging time is detected by surveying or being arranged voltage detecting network；It is closed after charging complete
It closes the first, second electric-controlled switch and completes charging process.
Compared with the existing technology, three phase mains charging circuit described in the utility model has the advantage that
(1) the utility model makes to pass through current limliting by the way that current-limiting charging circuit to be arranged in a wherein phase for three phase mains
The current energy of resistance reduces, it is only necessary to compared with the current-limiting resistance of low capacity, while meet high-power applications occasion.
(2) the current-limiting resistance both end voltage of the utility model is low, and material type selecting is simple, high reliablity.
The another object of the utility model is to propose a kind of air conditioner, can be used for large-power occasions.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of air conditioner, including three phase mains charging circuit as described above.
Compared with the existing technology, air conditioner described in the utility model has the advantage that
(1) charging circuit in the utility model air conditioner is by being arranged in three phase mains wherein for current-limiting charging circuit
In one phase, make to reduce by the current energy of current-limiting resistance, it is only necessary to compared with the current-limiting resistance of low capacity, while meet big function
Rate application.
(2) the current-limiting resistance both end voltage of charging circuit is low in the utility model air conditioner, and material type selecting is simple, reliability
It is high.
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 utility model embodiment three phase mains charging circuit topology schematic diagram.
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.
The utility model provides a kind of three phase mains charging 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；
Current-limiting charging circuit is arranged in a wherein phase for three phase mains, for limiting dash current；
Second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains；That is, second is automatically controlled
Switch and current-limiting charging circuit are located in the different phases of three phase mains；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
In a certain embodiment, current-limiting charging circuit includes current-limiting resistance, the first electric-controlled switch, current-limiting resistance and the first electricity
Control switch in parallel.
In a certain embodiment, current-limiting resistance is thermistor PTC or cement resistor.Wherein, thermistor PTC is included
Short-circuit protection effect.
As a kind of specific embodiment, the first electric-controlled switch can be relay, field-effect tube or triode, this
The technical staff in field should be understood that the type of electric-controlled switch is not limited thereto, as long as can be realized the shape of open and close
State switching.
In addition, capacitance module may include concatenated first capacitor and the second capacitor, each capacitor distinguishes parallel resistance mould
Block is divided.It is connected in parallel between rectification module and inverter module after first capacitor and the series connection of the second capacitor, first resistor and the
One capacitor is in parallel, and second resistance is in parallel with the second capacitor, also, the second capacity earth.
As a kind of specific embodiment, current-limiting charging circuit is arranged in the R phase of three phase mains, the second electric-controlled switch
It is arranged in the S phase of three phase mains, the second electric-controlled switch can be relay, field-effect tube or triode, the skill of this field
Art personnel should be understood that the type of electric-controlled switch is not limited thereto, as long as can be realized the state switching of open and close i.e.
It can.The course of work of three phase mains charging circuit are as follows: when powering on, the first, second electric-controlled switch is in an off state, three phase mains
R phase and T-phase give capacitance module to charge at direct current AC rectification by reaching rectification module, rectification module after current-limiting resistance；
Charging time is detected by surveying or being arranged voltage detecting network；The first, second electric-controlled switch is closed after charging complete
Complete charging process.
In a certain embodiment, the utility model additionally provides a kind of air conditioner comprising three phase mains as described above
Charging circuit.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is prior art three phase mains charging circuit topology schematic diagram.As shown in Figure 1, thermistor PTC and
One relay K1 is in parallel, the DC side of three phase rectifier module is arranged in, the electric current that thermistor PTC is born is the total of three phase mains
Electric current, especially in large-power occasions, is asked just this just needs the PTC of very large capacity that can meet the requirements in order to solve this technology
Topic reduces the electric current by PTC, while being able to satisfy large-power occasions again, and applicant improves existing charging circuit.
Fig. 2 is the utility model embodiment three phase mains charging circuit topology schematic diagram.As shown in Fig. 2, by current limliting
The current-limiting charging circuit of resistance R2 and the first relay K1 connected in parallel composition is adjusted in the R phase of three phase mains.
As shown in Fig. 2, three phase mains charging circuit includes three phase mains, the second relay K2, three phase rectifier module and three
Phases inversion module；Wherein, the second relay K2 is arranged in the S phase of three phase mains.
Three phase mains charging circuit further includes current-limiting charging circuit, current-limiting charging circuit include current-limiting resistance R2 and with it simultaneously
First relay K1 of connection, is arranged in the R phase of three phase mains；It can make to subtract by the current energy of current-limiting resistance R2 in this way
It is small, while it being able to satisfy high-power applications occasion again.
Three phase mains charging circuit further includes capacitance module, and capacitance module is connected in parallel on three phase rectifier module and three-phase inversion mould
Between block, for storing voltage energy.
In the present embodiment, current-limiting resistance R2 can be thermistor PTC or cement resistor.
In the present embodiment, capacitance module includes concatenated first capacitor C4 and the second capacitor C5, first capacitor C4 and
It is connected in parallel between three phase rectifier module and three-phase inversion module after two capacitor C5 series connection, first resistor R4 and first capacitor C4 are simultaneously
Connection, second resistance R5 is in parallel with the second capacitor C5, also, the second capacitor C5 is grounded.
When charging, the voltage between R, T line of three phase mains is 380V, and after the rectification of three phase rectifier module, voltage is
537V, therefore, the electrolytic capacitor of first capacitor C4 and second two 450V of capacitor C5 will be used in series, in parallel with first capacitor C4
First resistor R4, the second resistance R5 in parallel with the second capacitor C5 play the role of pressing.
The course of work of three phase mains charging circuit are as follows: when powering on, the first relay K1, the second relay K2, which are in, to be disconnected
State, by reaching three phase rectifier module after current-limiting resistance R2, three phase rectifier module will exchange whole the R phase and T-phase of three phase mains
Direct current is flowed into charge to first capacitor C4 and the second capacitor C5；Charging time is carried out by surveying or being arranged voltage detecting network
Detection；It is closed the first relay K1, the second relay K2 after charging complete, completes charging process.
The current-limiting charging circuit of current-limiting resistance R2 and the first relay K1 composition connected in parallel are adjusted to three phase mains
R phase on so that being reduced by the electric current of current-limiting resistance R2, the voltage at the both ends current-limiting resistance R2 is lower, and material has been achieved
Type selecting is simple, high reliablity.
In the present embodiment, a kind of air conditioner is additionally provided comprising above-mentioned charging circuit.Due to being applied in air conditioner
The present embodiment above-mentioned charging circuit, it is smaller by the current energy of current-limiting resistance, do not need the current-limiting resistance of large capacity i.e.
It can meet the requirements, while can be applied in large-power occasions.In addition, the electric current by current-limiting resistance is small, current-limiting resistance two
The voltage at end will be accordingly smaller, can thus realize that material type selecting is simple, high reliablity.
So far, attached drawing is had been combined the utility model is described in detail.According to above description, those skilled in the art
Member should have clear understanding to the utility model three phase mains charging circuit.Pass through limit in the charging circuit of the utility model
The electric current of leakage resistance is smaller, it is only necessary to lesser current-limiting resistance, and high-power applications occasion can also be met；Separately
Outside, small by the electric current of current-limiting resistance, the voltage at current-limiting resistance both ends will be accordingly smaller, can thus realize material type selecting
Simply, high reliablity.
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 three phase mains charging 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；
Current-limiting charging circuit is arranged in a wherein phase for three phase mains；
Second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains；
Capacitance module is connected in parallel between rectification module and inverter module.
2. three phase mains charging circuit according to claim 1, which is characterized in that current-limiting charging circuit includes current limliting electricity
Resistance, the first electric-controlled switch, current-limiting resistance are in parallel with the first electric-controlled switch.
3. three phase mains charging circuit according to claim 2, which is characterized in that the current-limiting resistance is thermistor
PTC or cement resistor.
4. three phase mains charging circuit according to claim 2, which is characterized in that the first, second electric-controlled switch is relay
Device, field-effect tube or triode.
5. three phase mains charging circuit according to claim 1, which is characterized in that the capacitance module includes concatenated
One capacitor and the second capacitor.
6. three phase mains charging circuit according to claim 5, which is characterized in that further include:
First resistor module, it is in parallel with first capacitor；
Second resistance module, it is in parallel with the second capacitor.
7. three phase mains charging circuit according to claim 6, which is characterized in that the first resistor module includes first
Resistance, the second resistance module includes second resistance.
8. three phase mains charging circuit according to claim 1, which is characterized in that the current-limiting charging circuit is arranged three
In the R phase of phase power supply, second electric-controlled switch is arranged in the S phase of three phase mains.
9. three phase mains charging circuit according to claim 1, which is characterized in that the work of the three phase mains charging circuit
Make process are as follows: when powering on, the first, second electric-controlled switch is in an off state, and three phase mains reaches rectification after passing through current-limiting resistance
Module, rectification module charge AC rectification at direct current to capacitance module；Charging time is by surveying or being arranged voltage detecting
Network is detected；It is closed the first, second electric-controlled switch after charging complete and completes charging process.
10. a kind of air conditioner, which is characterized in that including the described in any item three phase mains charging circuits of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820835261.9U CN208241389U (en) | 2018-05-31 | 2018-05-31 | Three phase mains charging circuit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820835261.9U CN208241389U (en) | 2018-05-31 | 2018-05-31 | Three phase mains charging circuit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208241389U true CN208241389U (en) | 2018-12-14 |
Family
ID=64576152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820835261.9U Active CN208241389U (en) | 2018-05-31 | 2018-05-31 | Three phase mains charging circuit and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208241389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471161A (en) * | 2018-05-31 | 2018-08-31 | 奥克斯空调股份有限公司 | Three phase mains charging circuit and air conditioner |
-
2018
- 2018-05-31 CN CN201820835261.9U patent/CN208241389U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471161A (en) * | 2018-05-31 | 2018-08-31 | 奥克斯空调股份有限公司 | Three phase mains charging circuit and air conditioner |
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