CN208508520U - Discharge circuit, driving plate, controller and air-conditioning - Google Patents
Discharge circuit, driving plate, controller and air-conditioning Download PDFInfo
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- CN208508520U CN208508520U CN201821110692.5U CN201821110692U CN208508520U CN 208508520 U CN208508520 U CN 208508520U CN 201821110692 U CN201821110692 U CN 201821110692U CN 208508520 U CN208508520 U CN 208508520U
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Abstract
The utility model relates to a kind of discharge circuit, driving plate, controller and air-conditionings, including power supply module, live detection module, the first control switch, Switching Power Supply, PFC PFC module, discharge module and control module；Control module controls the disconnection of discharge module according to the electriferous state of live detection module, and bus is made to be in normal operating condition, alternatively, the conducting of control discharge module, makes bus be in discharge condition.Using the technical solution of the utility model, it can effectively prevent that electric shock phenomenon occurs, improve the safety of air-conditioning.
Description
Technical field
The utility model relates to air-conditioning technical fields, and in particular to a kind of discharge circuit, driving plate, controller and air-conditioning.
Background technique
Currently, the air-conditioning driving motherboard circuit in air-conditioning is all with the straight friendship technology of friendship, alternating current input air-conditioning driving mainboard
After rectifier bridge, become direct current, the voltage of the direct current is known as busbar voltage in driving industry, in order to keep the bus electric
Pressure is stablized, and a biggish storage capacitor can be generally incorporated on DC bus, storage capacitor can be made fully charged after powering on.It is driving
When movable plate works, the storage capacitor on DC bus be in fully charged state, when driving plate is out of service under off-position,
Because of capacitance characteristic, the energy stored in the storage capacitor will not disappear at once, and electric shock phenomenon easily occurs, reduces the safety of air-conditioning
Property.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of discharge circuit, driving plate, controller and air-conditioning, with
Solve the problems, such as that the safety of air-conditioning in the prior art is lower.
In order to achieve the above object, the utility model provides a kind of discharge circuit, including power supply module, live detection module,
First control switch, Switching Power Supply, PFC PFC module, discharge module and control module；
The first end of first control switch and the first end of the power supply module respectively with the live detection module
First end be connected, the second end of the first input end of the Switching Power Supply and the power supply module respectively with the live detection
The second end of module is connected, and the third end of the live detection module is connected with the first end of the control module；
The second end of first control switch is connected with the second end of the Switching Power Supply；
The second input terminal and the discharge module of the Switching Power Supply are connected with the bus of the PFC module；
The output end of the Switching Power Supply is connected with the discharge module and the control module respectively；
The discharge module is also connected with the second end of the control module；
The control module controls the disconnection of the discharge module, makes according to the electriferous state of the live detection module
The bus is in normal operating condition, alternatively, controlling the conducting of the discharge module, the bus is made to be in discharge condition.
Further, in discharge circuit described above, the control module includes main control chip, photo-coupler, first
Resistance unit and the second control switch；
The first end of the main control chip is connected with the third end of the live detection module, and the second of the main control chip
End is connected with the input terminal of the photo-coupler；The first end phase of the output end of the photo-coupler and the first resistor unit
Even, the second end of the first resistor unit is connected with second control switch；
Second control switch is also connected with the discharge module.
Further, in discharge circuit described above, the control module further includes capacitor；
The output end of the photo-coupler is also connected with the capacitor.
Further, in discharge circuit described above, the discharge module includes relay and second resistance unit；
The relay includes coil and contact；
The contact is connected with the second resistance unit, the output with the Switching Power Supply respectively of the both ends of the coil
End is connected with second control switch.
Further, in discharge circuit described above, the control module further includes first diode；
The anode of the first diode is connected with second control switch；The cathode of the first diode with it is described
The output end of Switching Power Supply is connected.
Further, in discharge circuit described above, the live detection module includes 3rd resistor unit；
The first end of the power supply module distinguishes the 3rd resistor unit with the second end of the power supply module and is connected.
Further, in discharge circuit described above, the power supply module includes alternating current input interface, AC charging
Unit and rectification unit；
The alternating current input interface is connected by the AC charging unit with the rectification unit.
Further, in discharge circuit described above, first control switch is the second diode.
The utility model also provides a kind of driving plate, is provided with discharge circuit as described above.
The utility model also provides a kind of controller, is provided with driving plate as described above.
The utility model also provides a kind of air-conditioning, is provided with controller as described above.
The discharge circuit, driving plate, controller and air-conditioning of the utility model, by the way that power supply module, live detection mould is arranged
Block, the first control switch, Switching Power Supply, PFC PFC module, discharge module and control module；By live detection mould
Whether block detects power supply module in running order, and after exporting corresponding charged signal or power-off signal to control module, by
The control signal that control module output control discharge module is turned on or off, realizes automatic to the storage capacitor in PFC module
Electric discharge.Using the technical solution of the utility model, it can effectively prevent that electric shock phenomenon occurs, improve the safety of air-conditioning.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the discharge circuit embodiment of the utility model.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Fig. 1 is the structural schematic diagram of the discharge circuit embodiment of the utility model, as described in Figure 1, the electric discharge of the present embodiment
Circuit includes power supply module 10, live detection module 11, the first control switch D2, Switching Power Supply 12, PFC
(Power Factor Correction, PFC) module 13, discharge module 14 and control module 15.Wherein, the first control switch
The first end of D2 and the first end of power supply module 10 are connected with the first end of live detection module 11 respectively, and the of Switching Power Supply 12
The second end of one input terminal and power supply module 10 is connected with the second end of live detection module 11 respectively, live detection module 11
Third end is connected with the first end POWER_CHECK of control module；The second end of first control switch D2 and Switching Power Supply 12
Second end is connected；The second input terminal and discharge module 14 of Switching Power Supply 12 are connected with the bus P of PFC module 13, switch electricity
The output end in source 12 is connected with discharge module 14 and control module 15 respectively；Second end of the discharge module 14 also with control module 15
It is connected.Wherein, the first control switch D2 is preferably that the second diode is realized.
During a specific implementation, electriferous state of the control module 15 according to live detection module 11, control electric discharge
The disconnection of module 14 makes bus P be in normal operating condition, alternatively, the conducting of control discharge module 14, is in bus P and puts
Electricity condition.For example, when power supply module 10 work when, the first control switch D2 conducting, live detection module 11, Switching Power Supply 12,
PFC module 13 obtains electric, the first end POWER_CHECK input charged signal of control module, and by the second end of control module 15
First control signal is exported, discharge module 14 is disconnected, the bus P of PFC module 13 is in normal operating condition, works as power supply module
10 when stopping working, and since the energy stored in the storage capacitor C1 of PFC module 13 will not disappear at once, PFC module 13 is split
Powered-down source 12 powers, and then is powered by Switching Power Supply 12 to control module 15 and discharge module 14, but the first control switch D2 is disconnected
It opens, so that can not be formed into a loop between live detection module 11, the first control switch D2 and Switching Power Supply 12, live detection module
11 power-off, the first end POWER_CHECK of control module input power-off signal, and by the second end of control module 15 output second
Signal is controlled, discharge module 14 is connected, the bus P of PFC module 13 is in discharge condition.
The discharge circuit of the present embodiment, by setting power supply module 10, live detection module 11, the first control switch D2,
Switching Power Supply 12, PFC PFC module 13, discharge module 14 and control module 15；It is detected by live detection module 11
Whether power supply module 10 is in running order, and after exporting corresponding charged signal or power-off signal to control module 15, by controlling
The control signal that the output control discharge module 14 of molding block 15 is turned on or off, realizes to the storage capacitor in PFC module 13
C1 automatic discharging.Using the technical solution of the utility model, it can effectively prevent that electric shock phenomenon occurs, improve the safety of air-conditioning
Property.
During a specific implementation, control module 15 includes main control chip U1, photo-coupler U2, first resistor unit
R1 and the second control switch Q；The first end of main control chip U1 is connected with the third end of live detection module 11, main control chip U1's
Second end is connected with the input terminal of photo-coupler U2；The first end phase of the output end of photo-coupler U2 and first resistor unit R 1
Even, the second end of first resistor unit R 1 is connected with the second control switch Q；Second control switch Q is also connected with discharge module 14.
For example, the second control switch Q is preferably triode, first resistor unit R 1 may include two resistance.Master control core
After the first end input charged signal of piece U1, it is possible to determine that power supply module 10 is in running order, the second end of main control chip U1
High level signal is exported, photo-coupler U2 is disconnected, and the second control switch Q is disconnected, and is input to the first control letter of discharge module 14
Number be low level signal, discharge module 14 disconnect, can not the storage capacitor C1 to PFC module 13 discharge, main control chip U1
First end input power-off signal after, it is possible to determine that power supply module 10 is in stop working state, the second end of main control chip U1
Low level signal is exported, photo-coupler U2 is disconnected, and by two resistance current limlitings, partial pressures etc., makes to input the second control switch Q's
Voltage reaches the conducting voltage of the second control switch Q, and then the second control switch Q is connected, and is input to the of discharge module 14
One control signal is high level signal, and discharge module 14 is connected, discharges the storage capacitor C1 of PFC module 13.
In practical applications, the control module 15 of the present embodiment can also include capacitor C2, capacitor C2 and optocoupler
The output end of clutch U2 is connected, and is filtered with the signal exported to photo-coupler U2, and the signal for exporting photo-coupler U2 is more
Add stabilization.
As shown in Figure 1, discharge module 14 includes relay K and second resistance unit R 2 in the present embodiment；Relay K packet
Include coil K1 and contact K2；Contact K2 connects with second resistance unit R 2, and the both ends of coil K1 are defeated with Switching Power Supply 12 respectively
Outlet is connected with the second control switch Q.When second control switch Q is disconnected, the first control signal for being input to coil K1 is low electricity
Ordinary mail number, contact K2 can not be attracted, discharge module 14 disconnect, can not the storage capacitor C1 to PFC module 13 discharge.Second
When control switch Q is closed, the second control signal for being input to coil K1 is high level signal, and contact K2 is attracted, discharge module 14
Conducting, discharges to the storage capacitor C1 of PFC module 13.
It should be noted that in the present embodiment in second resistance unit R 2 resistance number, resistance value etc., can be according to PFC
The actual capacity of the storage capacitor C1 of module 13 is configured, for example, the present embodiment is for being arranged two.Furthermore it is also possible to
One adjustable resistance is set, to meet the capacity of the storage capacitor C1 of PFC module 13.
As shown in Figure 1, the live detection module 11 in the present embodiment includes 3rd resistor unit R 3；The of power supply module 10
One end is connected with the second end of power supply module 10 difference 3rd resistor unit R 3, and 3rd resistor unit R 3 may include two series connection
Resistance.
As shown in Figure 1, the control module 15 of the present embodiment further includes first diode D1；First diode D1 anode with
Second control switch Q is connected；The cathode of first diode D1 is connected with the output end of Switching Power Supply 12, to prevent Switching Power Supply 12
The electric current of output end flow to the second control switch Q, to be protected to the second control switch Q.
In practical applications, as shown in Figure 1, the power supply module 10 in the present embodiment includes alternating current input interface 101, hands over
Current charge unit 102 and rectification unit 103, alternating current input interface 101 pass through AC charging unit 102 and rectification unit 103
It is connected.
The discharge circuit of the present embodiment can automatically carry out the storage capacitor C1 in PFC module 13 after air-conditioning shutdown
Discharge treatment carries out manual discharge without operating personnel, improves work efficiency, and avoid operating personnel's misoperation,
Cause the risk consequences such as short circuit, everybody, operating personnel's electric shock, while avoiding air-conditioning driving mainboard and breaking down.
The utility model additionally provides a kind of driving plate, which is provided with the electric discharge electricity of above-described embodiment
Road.
The utility model also provides a kind of controller, which is provided with the driving plate of above-described embodiment.
The utility model also provides a kind of air-conditioning, which is characterized in that is provided with the controller of above-described embodiment.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present invention,
It is not understood to indicate or imply relative importance.In addition, in the description of the present invention, unless otherwise indicated, it is " more
It is a " meaning refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (11)
1. a kind of discharge circuit, which is characterized in that including power supply module, live detection module, the first control switch, switch electricity
Source, PFC PFC module, discharge module and control module；
The first end of first control switch and the first end of the power supply module respectively with the live detection module
One end be connected, the second end of the first input end of the Switching Power Supply and the power supply module respectively with the live detection module
Second end be connected, the third end of the live detection module is connected with the first end of the control module；
The second end of first control switch is connected with the second end of the Switching Power Supply；
The second input terminal and the discharge module of the Switching Power Supply are connected with the bus of the PFC module；
The output end of the Switching Power Supply is connected with the discharge module and the control module respectively；
The discharge module is also connected with the second end of the control module；
The control module controls the disconnection of the discharge module according to the electriferous state of the live detection module, makes described
Bus is in normal operating condition, alternatively, controlling the conducting of the discharge module, the bus is made to be in discharge condition.
2. discharge circuit according to claim 1, which is characterized in that the control module includes main control chip, optical coupling
Device, first resistor unit and the second control switch；
The first end of the main control chip is connected with the third end of the live detection module, the second end of the main control chip with
The input terminal of the photo-coupler is connected；The output end of the photo-coupler is connected with the first end of the first resistor unit,
The second end of the first resistor unit is connected with second control switch；
Second control switch is also connected with the discharge module.
3. discharge circuit according to claim 2, which is characterized in that the control module further includes capacitor；
The output end of the photo-coupler is also connected with the capacitor.
4. discharge circuit according to claim 2, which is characterized in that the discharge module includes relay and second resistance
Unit；
The relay includes coil and contact；
The contact is connected with the second resistance unit, the both ends of the coil respectively with the output end of the Switching Power Supply and
Second control switch is connected.
5. discharge circuit according to claim 4, which is characterized in that the control module further includes first diode；
The anode of the first diode is connected with second control switch；The cathode of the first diode and the switch
The output end of power supply is connected.
6. discharge circuit according to claim 1, which is characterized in that the live detection module includes 3rd resistor list
Member；
The first end of the power supply module distinguishes the 3rd resistor unit with the second end of the power supply module and is connected.
7. discharge circuit according to claim 1-6, which is characterized in that the power supply module includes that alternating current is defeated
Incoming interface, AC charging unit and rectification unit；
The alternating current input interface is connected by the AC charging unit with the rectification unit.
8. discharge circuit according to claim 1-6, which is characterized in that first control switch is the two or two
Pole pipe.
9. a kind of driving plate, which is characterized in that be arranged just like the described in any item discharge circuits of claim 1-8.
10. a kind of controller, which is characterized in that be provided with driving plate as claimed in claim 9.
11. a kind of air-conditioning, which is characterized in that be provided with controller as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821110692.5U CN208508520U (en) | 2018-07-12 | 2018-07-12 | Discharge circuit, driving plate, controller and air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821110692.5U CN208508520U (en) | 2018-07-12 | 2018-07-12 | Discharge circuit, driving plate, controller and air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208508520U true CN208508520U (en) | 2019-02-15 |
Family
ID=65284829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821110692.5U Active CN208508520U (en) | 2018-07-12 | 2018-07-12 | Discharge circuit, driving plate, controller and air-conditioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208508520U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066633A (en) * | 2018-07-12 | 2018-12-21 | 珠海格力电器股份有限公司 | Discharge circuit, driving plate, controller and air-conditioning |
| CN109869879A (en) * | 2019-03-06 | 2019-06-11 | 珠海格力电器股份有限公司 | Air conditioner control circuit and its discharge circuit |
-
2018
- 2018-07-12 CN CN201821110692.5U patent/CN208508520U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066633A (en) * | 2018-07-12 | 2018-12-21 | 珠海格力电器股份有限公司 | Discharge circuit, driving plate, controller and air-conditioning |
| CN109869879A (en) * | 2019-03-06 | 2019-06-11 | 珠海格力电器股份有限公司 | Air conditioner control circuit and its discharge circuit |
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