CN108493918A - Charging circuit and air conditioner - Google Patents
Charging circuit and air conditioner Download PDFInfo
- Publication number
- CN108493918A CN108493918A CN201810549978.1A CN201810549978A CN108493918A CN 108493918 A CN108493918 A CN 108493918A CN 201810549978 A CN201810549978 A CN 201810549978A CN 108493918 A CN108493918 A CN 108493918A
- Authority
- CN
- China
- Prior art keywords
- phase
- electric
- module
- controlled switch
- phase mains
- 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.)
- Pending
Links
- 238000007600 charging Methods 0.000 title claims abstract description 42
- 230000018199 S phase Effects 0.000 claims description 6
- 230000005669 field effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 21
- 238000005516 engineering process Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000819 phase cycle Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Protection Of Static Devices (AREA)
Abstract
The present invention provides a kind of charging circuits, including：Three phase mains, rectification module, inverter module, the first electric-controlled switch, current-limiting resistance, the second electric-controlled switch, third electric-controlled switch, switching tube, amplifying 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 resistance is arranged in a wherein phase for three phase mains or the DC side of rectification module, first electric-controlled switch is in parallel with current-limiting resistance, second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains, and third electric-controlled switch is connected with current-limiting resistance；Switching tube is connect with third electric-controlled switch；The output end of amplifying circuit is connect with switching tube, and input terminal is connected in the arbitrary two-phase of three phase mains；Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
Description
Technical field
The present invention relates to household electrical appliance field of circuit technology, more particularly to detection work(with voltage in a kind of anti-wrong line circuit
The charging circuit and air conditioner of energy.
Background technology
With the fast development of the raising and science and technology of Living consumption, the type of household electrical appliance is more and more, example
Such as, the demand degree at present to air-conditioning is greatly improved, and air-conditioning can effectively adjust indoor temperature, keeps it in one
Steady temperature, in hot summer or the winter of cold, air-conditioning is at essential household electrical appliance for people's lives.With household
The generally use of electric appliance, the safety that household electrical appliances use increasingly are valued by people.Wrong line is that household electrical appliance exist in circuit
One of unsafe factor during use.Fig. 1 is the topological structure signal of phase sequence protection circuit in existing three-phase power supply system
Figure, as shown in Figure 1, the phase sequence protection circuit is only capable of detection anti-phase, phase shortage and under-voltage.
Existing three-phase power supply system phase sequence protection circuit is only capable of detection anti-phase, phase shortage and under-voltage, can not detect zero curve and fire
The problem of line wrong, once firewire and zero curve wrong, cause single-phase circuit voltage to become 380V from 220V, excessively high voltage can be burnt
Single-phase circuit component is ruined, air-conditioning is resulted even in and catches fire equal major accidents.Therefore, it is necessary to change to existing charging circuit
Into.
Invention content
In view of this, the present invention is directed to propose in a kind of anti-wrong line circuit detection function with voltage charging circuit, can
To detect the voltage between zero curve firewire, once wrong line occurs, amplifying circuit driving switch pipe conducting, main circuit will break immediately
It opens, avoids burning the possibility that fire even occurs for component.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of charging circuit, including：
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 resistance, 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 current-limiting resistance；
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 current-limiting resistance；
Switching tube is connect with third electric-controlled switch；
Amplifying circuit, output end are connect with switching tube, and input terminal is connected in the arbitrary two-phase of three phase mains；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
Further, the switching tube is transistor, and the amplifying circuit includes operational amplifier, wherein
The positive input terminal of operational amplifier is connected in a wherein phase for three phase mains, and negative input end is connected to three phase mains
Other two-phase in any one phase on, the base stage of output end and transistor connects.
Further, further include：
Exchange side or DC side in rectification module is arranged in electromagnetic interface filter.
Further, the first, second, third electric-controlled switch is relay, field-effect tube or triode.
Further, further include：
Additional high pressure power supply is connect by firewire and zero curve with the three phase mains, wherein third electric-controlled switch and auxiliary
High voltage power supply connects.
Further, the capacitance module includes concatenated first capacitance and the second capacitance.
Further, further include：
First resistor module, it is in parallel with the first capacitance；
Second resistance module, it is in parallel with the second capacitance.
Further, the current-limiting resistance is arranged in the R phases of three phase mains, and second electric-controlled switch is arranged in three-phase
In the S phases of power supply.
Compared with the existing technology, the charging circuit of detection function with voltage has in anti-wrong line circuit of the present invention
Following advantage：
(1) for the present invention by current-limiting resistance one electric-controlled switch of series connection, electric-controlled switch connects a switching tube, switching tube connection one
Amplifying circuit, amplifying circuit detect the voltage between zero curve firewire, once wrong line occurs, amplifying circuit driving switch pipe is led
Logical, electric-controlled switch disconnects immediately so that main circuit no current exports, and avoids the problem of burning component or even catching fire.
(2) circuit structure of the invention is simple, fast response time, at low cost.
(3) other overpressure situations other than wrong line causes overvoltage, the present invention can also play a protective role.
Another object of the present invention is to propose a kind of charging circuit, prevent wrong line from causing the hazard events such as fire.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of charging circuit, including：
Single phase poaer supply；
Rectification module, input terminal are connect with three phase mains；
The output end of inverter module, input terminal and rectification module connects；
Exchange side or DC side in rectification module is arranged in current-limiting resistance；
First electric-controlled switch, it is in parallel with current-limiting resistance；
Third electric-controlled switch, connects with current-limiting resistance；
Switching tube is connect with third electric-controlled switch；
Amplifying circuit, output end are connect with switching tube, and input terminal is connected in the arbitrary two-phase of three phase mains；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
Further, further include：
Additional high pressure power supply is connect by firewire and zero curve with the single phase poaer supply, wherein third electric-controlled switch and auxiliary
High voltage power supply connects.
Possessed advantage is identical compared with the existing technology with above-mentioned charging circuit for the charging circuit, no longer superfluous herein
It states.
Another object of the present invention is to propose a kind of air conditioner, prevent wrong line from causing the hazard events such as fire.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
The charging circuit of detection function with voltage in a kind of air conditioner, including anti-wrong line circuit as described above.
Possessed advantage is identical compared with the existing technology with above-mentioned charging circuit for the air conditioner, and details are not described herein.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the topological structure schematic diagram of phase sequence protection circuit in three-phase power supply system in the prior art.
Fig. 2 is that the charging circuit topology of detection function with voltage in the anti-wrong line circuit of first embodiment of the invention shows
It is intended to.
Fig. 3 is that the charging circuit topology of detection function with voltage in the anti-wrong line circuit of second embodiment of the invention shows
It is intended to.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In one embodiment of this invention, a kind of charging electricity of detection function with voltage in anti-wrong line circuit is provided
Road, including：
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 resistance, 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 current-limiting resistance；
Second electric-controlled switch is arranged in wherein another phase of three phase mains；
Third electric-controlled switch, connects with current-limiting resistance；
Switching tube is connect with third electric-controlled switch；
Amplifying circuit, output end are connect with switching tube, and input terminal is connected in the arbitrary two-phase of three phase mains；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
In another embodiment of the invention, a kind of charging electricity of detection function with voltage in anti-wrong line circuit is provided
Road, including：
Single phase poaer supply；
Rectification module, input terminal are connect with three phase mains；
The output end of inverter module, input terminal and rectification module connects；
Exchange side or DC side in rectification module is arranged in current-limiting resistance；
First electric-controlled switch, it is in parallel with current-limiting resistance；
Third electric-controlled switch, connects with current-limiting resistance；
Switching tube is connect with third electric-controlled switch；
Amplifying circuit, output end are connect with switching tube, and input terminal is connected in the arbitrary two-phase of three phase mains；
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 current-limiting resistance, 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, switching tube is transistor, and amplifying circuit includes operational amplifier, operational amplifier
Positive input terminal is connected in a wherein phase for three phase mains, and negative input end is connected to any one in the other two-phase of three phase mains
The base stage of Xiang Shang, output end and transistor connects.Specifically, the collector of transistor connects with third electric-controlled switch
It connects, the emitter ground connection of transistor.In addition, a resistance in parallel between the positive input terminal and output end of operational amplifier.
In a certain embodiment, the charging circuit of detection function with voltage further includes electromagnetic interface filter in anti-wrong line circuit,
Exchange side or DC side in rectification module is arranged in it, and frequency signal when equipment being allowed to work normally enters equipment, hinders
The interference signal of high frequency.
In a certain embodiment, the charging circuit of detection function with voltage further includes additional high pressure electricity in anti-wrong line circuit
Source is connect by firewire and zero curve with the power supply in main circuit.Additional high pressure power supply is also connect with third electric-controlled switch, as
The power supply of third electric-controlled switch.
In addition, capacitance module may include concatenated first capacitance and the second capacitance, each capacitance distinguishes parallel resistance mould
Block is divided.
As can be seen from the above-described embodiment, it can be single phase poaer supply for the type of power supply, can also be three phase mains,
In single phase poaer supply charging circuit, it is not provided with the second electric-controlled switch；In three phase mains charging circuit, current-limiting resistance is connected on three
In a wherein phase for phase power supply, the second electric-controlled switch is arranged in any one phase in the other two-phase of three phase mains.It needs
Bright, in three phase mains charging circuit, current-limiting resistance and the second electric-controlled switch are located in the different phases of three phase mains.
As a kind of specific embodiment, the first, second, third electric-controlled switch can be relay, field-effect tube or
Person's triode, it should be apparent to a person skilled in the art that the type of electric-controlled switch is not limited thereto, as long as closure can be realized
Switch with the state of disconnection.In addition, current-limiting resistance can be cement resistor or thermistor PTC.
In a certain embodiment, the present invention also provides a kind of air conditioners comprising anti-wrong line circuit as described above
In detection function with voltage charging circuit.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
First embodiment：First electric-controlled switch and current-limiting resistance in parallel is located at the exchange side of rectification module
Fig. 2 is that the charging circuit topology of detection function with voltage in the anti-wrong line circuit of first embodiment of the invention shows
It is intended to.As shown in Fig. 2, in the present embodiment, main circuit includes concatenated three phase mains, the second relay K2, three phase rectifier mould
Block and three-phase inversion module, the second relay K2 are connected in the S phases of three phase mains, and current-limiting resistance R1 is connected on three phase mains
In R phases, the first relay K1 is in parallel with current-limiting resistance R1, and third relay K3 (normally closed relay) connects with current-limiting resistance R1,
The collector terminal of third relay K3 connection transistors Q1, the base terminal connection operational amplifier U2's of transistor Q1
Output end, the emitter terminal ground connection of transistor Q1, the positive input terminal of operational amplifier U2 are connected in S phases, operation amplifier
The negative input end of device U2 is connected in T-phase, and 3rd resistor R3 is connected in parallel between the positive input terminal and output end of operational amplifier U2,
Operational amplifier needs are fed back, and the input of amplifier amplifier is high pressure, on resistance R3 and operational amplifier positive input terminal
Resistance R8 on resistance R7, operational amplifier negative input end together reduces voltage.Three-phase electromagnetic interface filter is connected on master
Between the second relay K2 and rectification module of circuit.
Additional high pressure power supply is connect by firewire and zero curve with the power supply in main circuit, additional high pressure power supply also with third after
Electric appliance K3 connections, the power supply as third relay K3.
It is connected in parallel between three phase rectifier module and three-phase inversion module after first capacitance C4 and the second capacitance C5 series connection, first
Resistance R4 is in parallel with the first capacitance C4, and second resistance R5 is in parallel with the second capacitance C5, also, the second capacitance C5 ground connection.First electricity
Hold C4 and the second capacitance C5 forms capacitance module.
In the present embodiment, the specific work process of the charging circuit of detection function with voltage is such as in anti-wrong line circuit
Under：
Three phase mains R, S, T, the neutral conductor are zero curve.When normal work powers on, R phases pass through current-limiting resistance R1, third relay
After device K3 three-phase inversion is then given to the first capacitance C4, the second capacitance C5 chargings through three-phase electromagnetic interface filter and three phase rectifier module
Module for power supply.Voltage between zero firewire is detected by the amplifying circuit that operational amplifier U2 and 3rd resistor R3 are formed, is normally connected
When line, amplifying circuit cannot drive transistor Q1 to be connected；Once wrong line occurs, that is to say, that zero curve misconnection at firewire,
Additional high pressure power input becomes 380V from 220V, and phase voltage detection circuit output voltage increases, and driving transistor Q1 is led
It is logical, third relay K3 is disconnected, that is, disconnects the connection of R lines and rear class, at this time the single phase poaer supply of the R lines and zero curve composition i.e. company of disconnection
It connects；Or the single phase poaer supply of the second relay K2, S phase firewire and zero curve composition is not attracted without output.
By detecting the voltage between Live line Zero line it can be seen from the above process, once error connection occurs, caused
Pressure, will disconnecting circuit connection, play a protective role to circuit, corresponding speed is fast；On the other hand, such circuit structure letter
It is single, at low cost, while protection can also be generated to other over-voltage events.
Second embodiment：First electric-controlled switch and current-limiting resistance in parallel is located at the DC side of rectification module
Fig. 3 is that the charging circuit topology of detection function with voltage in the anti-wrong line circuit of second embodiment of the invention shows
It is intended to.As shown in figure 3, in the present embodiment, compared with first embodiment, the present embodiment charging circuit difference lies in：
Current-limiting resistance R1 is connected on the DC side of three phase rectifier module, and the first relay K1 is in parallel with current-limiting resistance R1.Three
Phase electromagnetic interface filter is connected between the three phase mains of main circuit and the second relay K2.
In the present embodiment, the specific work process of the charging circuit of detection function with voltage is such as in anti-wrong line circuit
Under：
Normal work is when powering on, three phase mains by after three-phase electromagnetic interface filter and three phase rectifier module through current-limiting resistance R1,
To the first capacitance C4, the second capacitance C5 chargings after third relay K3, three-phase inversion module for power supply is then given.By operational amplifier
The amplifying circuit of U2 and 3rd resistor R3 compositions detects the voltage between zero firewire, and when normal line, amplifying circuit cannot drive
Transistor Q1 conductings；Once wrong line occurs, that is to say, that zero curve misconnection is at firewire, and additional high pressure power input is by 220V
Become 380V, phase voltage detection circuit output voltage increases, and the Q1 conductings of driving transistor disconnect third relay K3, i.e.,
Disconnect the connection of three phase mains and rear class；Or be not attracted the single phase poaer supply of the second relay K2, S phase firewire and zero curve composition without
Output.
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 to the present invention have been described in detail.According to above description, those skilled in the art answer
The charging circuit of detection function with voltage has clear understanding in the anti-wrong line circuit of the present invention.The present invention can detect
The case where voltage between zero curve firewire, the voltage obtained according to detection judges whether wrong line, it is possible thereby to avoid burning
Ruin component or even the problem of catch fire, and the circuit structure of the present invention is simple, fast response time, at low cost.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of charging circuit, which is characterized in that including：
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 resistance, 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 current-limiting resistance；
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 current-limiting resistance；
Switching tube is connect with third electric-controlled switch；
Amplifying circuit, output end are connect with switching tube, and input terminal is connected in the arbitrary two-phase of three phase mains；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
2. a kind of charging circuit, which is characterized in that including：
Single phase poaer supply；
Rectification module, input terminal are connect with three phase mains；
The output end of inverter module, input terminal and rectification module connects；
Exchange side or DC side in rectification module is arranged in current-limiting resistance；
First electric-controlled switch, it is in parallel with current-limiting resistance；
Third electric-controlled switch, connects with current-limiting resistance；
Switching tube is connect with third electric-controlled switch；
Amplifying circuit, output end are connect with switching tube, and input terminal is connected in the arbitrary two-phase of three phase mains；
Capacitance module is connected in parallel between rectification module and inverter module, for storing voltage energy.
3. charging circuit according to claim 1 or 2, which is characterized in that the switching tube is transistor, described to put
Big circuit includes operational amplifier, wherein
The positive input terminal of operational amplifier is connected in a wherein phase for three phase mains, and negative input end is connected to the another of three phase mains
In any one phase in outer two-phase, the base stage of output end and transistor connects.
4. charging circuit according to claim 3, which is characterized in that further include：
Exchange side or DC side in rectification module is arranged in electromagnetic interface filter.
5. charging circuit according to claim 4, which is characterized in that the first, second, third electric-controlled switch be relay,
Field-effect tube or triode.
6. charging circuit according to claim 1 or 2, which is characterized in that further include：
Additional high pressure power supply is connect by firewire and zero curve with the three phase mains or single phase poaer supply, wherein
Third electric-controlled switch is connect with additional high pressure power supply.
7. charging circuit according to claim 4, which is characterized in that the capacitance module include concatenated first capacitance and
Second capacitance.
8. charging circuit according to claim 7, which is characterized in that further include：
First resistor module, it is in parallel with the first capacitance；
Second resistance module, it is in parallel with the second capacitance.
9. charging circuit according to claim 1, which is characterized in that the R phases in three phase mains are arranged in the current-limiting resistance
On, second electric-controlled switch is arranged in the S phases of three phase mains.
10. a kind of air conditioner, which is characterized in that including claim 1-9 any one of them charging circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549978.1A CN108493918A (en) | 2018-05-31 | 2018-05-31 | Charging circuit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549978.1A CN108493918A (en) | 2018-05-31 | 2018-05-31 | Charging circuit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108493918A true CN108493918A (en) | 2018-09-04 |
Family
ID=63350879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810549978.1A Pending CN108493918A (en) | 2018-05-31 | 2018-05-31 | Charging circuit and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108493918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231755A1 (en) * | 2022-06-02 | 2023-12-07 | 合肥美的暖通设备有限公司 | Detection method and apparatus for phase wire and neutral wire reverse connection, storage medium and inverter air conditioner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202085355U (en) * | 2011-05-17 | 2011-12-21 | 四川鹏天科技发展有限公司 | IoT (Internet of Things)-based intelligent wireless street lamp controller |
| CN102343782A (en) * | 2011-07-15 | 2012-02-08 | 重庆松芝汽车空调有限公司 | Electric automobile air conditioning direct current high-voltage circuit with pre-charging function |
| CN204794720U (en) * | 2015-07-10 | 2015-11-18 | 广东美的制冷设备有限公司 | Invertion power supply's supply circuit and have its domestic appliance |
| WO2015184832A1 (en) * | 2014-10-09 | 2015-12-10 | 中兴通讯股份有限公司 | Alternating current detection circuit |
| CN205051349U (en) * | 2015-09-29 | 2016-02-24 | 昆明理工大学 | Live wire and zero line connect wrong automatic break circuit |
| CN105826909A (en) * | 2016-05-24 | 2016-08-03 | 珠海格力电器股份有限公司 | Charging circuit for converters, converter, and air conditioner |
| CN106655145A (en) * | 2016-11-17 | 2017-05-10 | 深圳市科陆电子科技股份有限公司 | Battery bus voltage reverse connection protection circuit |
| CN208820470U (en) * | 2018-05-31 | 2019-05-03 | 奥克斯空调股份有限公司 | Charging circuit and air conditioner |
-
2018
- 2018-05-31 CN CN201810549978.1A patent/CN108493918A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202085355U (en) * | 2011-05-17 | 2011-12-21 | 四川鹏天科技发展有限公司 | IoT (Internet of Things)-based intelligent wireless street lamp controller |
| CN102343782A (en) * | 2011-07-15 | 2012-02-08 | 重庆松芝汽车空调有限公司 | Electric automobile air conditioning direct current high-voltage circuit with pre-charging function |
| WO2015184832A1 (en) * | 2014-10-09 | 2015-12-10 | 中兴通讯股份有限公司 | Alternating current detection circuit |
| CN204794720U (en) * | 2015-07-10 | 2015-11-18 | 广东美的制冷设备有限公司 | Invertion power supply's supply circuit and have its domestic appliance |
| CN205051349U (en) * | 2015-09-29 | 2016-02-24 | 昆明理工大学 | Live wire and zero line connect wrong automatic break circuit |
| CN105826909A (en) * | 2016-05-24 | 2016-08-03 | 珠海格力电器股份有限公司 | Charging circuit for converters, converter, and air conditioner |
| CN106655145A (en) * | 2016-11-17 | 2017-05-10 | 深圳市科陆电子科技股份有限公司 | Battery bus voltage reverse connection protection circuit |
| CN208820470U (en) * | 2018-05-31 | 2019-05-03 | 奥克斯空调股份有限公司 | Charging circuit and air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231755A1 (en) * | 2022-06-02 | 2023-12-07 | 合肥美的暖通设备有限公司 | Detection method and apparatus for phase wire and neutral wire reverse connection, storage medium and inverter air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107681626A (en) | The protection circuit and its control method of air-conditioner controller | |
| CN105226611B (en) | Short circuit/overload protecting circuit of single-phase transformer | |
| CN208820470U (en) | Charging circuit and air conditioner | |
| CN103973134B (en) | Continuous-current plant and improve the pwm pulse control method of its power factor | |
| CN103972862B (en) | One automatically resets thunder-proof type overvoltage/undervoltage protection device | |
| CN103986345A (en) | Single-phase/three-phase full-voltage power adapter | |
| CN108444070A (en) | Include the three phase mains charging circuit and air conditioner of anti-wrong line circuit | |
| CN103280767B (en) | The braking resistor protection circuit of converter and method | |
| CN110416975A (en) | A kind of power protecting circuit and new-energy automobile | |
| CN108493918A (en) | Charging circuit and air conditioner | |
| CN114389259A (en) | Zero-live wire self-adjusting circuit and method and air conditioner | |
| CN108539836B (en) | Charging circuit comprising short-circuit protection circuit and air conditioner | |
| CN101257211B (en) | Circuit for preventing powered on moment impact in frequency converting air conditioner | |
| CN208508520U (en) | Discharge circuit, driving plate, controller and air-conditioning | |
| CN209448425U (en) | A kind of three-phase anti-misconnection circuit and corresponding air-conditioning | |
| CN102097787B (en) | Motor phase sequence default phase protector adopting resistive-capacitive (RC) phase-shift circuit | |
| CN202435637U (en) | Zero-power-consumption standby control circuit of electromagnetic induction heating device | |
| CN100349349C (en) | AC inputting high-voltage protector | |
| CN208241392U (en) | Charging circuit and air conditioner comprising anti-short-circuit protection circuit | |
| CN208704107U (en) | Three phase mains charging circuit and air conditioner comprising anti-wrong line circuit | |
| CN209119793U (en) | Short circuit over-current protection circuit and electronic equipment | |
| CN208241389U (en) | Three phase mains charging circuit and air conditioner | |
| CN210092944U (en) | Charging circuit | |
| CN208890362U (en) | Electric motor protective device and air-conditioning | |
| CN207283541U (en) | A kind of current loop communication circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |