CN214799024U - Standby power supply circuit and air conditioner - Google Patents
Standby power supply circuit and air conditioner Download PDFInfo
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- CN214799024U CN214799024U CN202120888364.3U CN202120888364U CN214799024U CN 214799024 U CN214799024 U CN 214799024U CN 202120888364 U CN202120888364 U CN 202120888364U CN 214799024 U CN214799024 U CN 214799024U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model provides a reserve power supply circuit and air conditioner relates to air conditioner technical field. The standby power supply circuit includes: the control unit is electrically connected with the switch unit, and controls the switch unit to disconnect the load from the power supply under the condition of receiving a fault signal of the power supply, so that the storage capacitor supplies power to the load. If the control unit receives the fault signal of power supply, the control unit control switch unit disconnection power supply and air guide door, give the air guide door power supply through the accumulate electric capacity, can make the air guide door close after power supply breaks down, avoid the dead condition of card to appear in the air guide door to user's experience sense has been improved.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to a reserve supply circuit and air conditioner.
Background
In practical use of a main board of an air conditioner, one switching power supply circuit often has a plurality of output loops, and each output loop is not directly related, that is, the plurality of output loops are connected in parallel. Under extreme conditions, if one of the output loops has a short-circuit fault, the whole switching power supply continuously works, the current is infinite during short circuit, the whole power supply can completely stop working, and the air conditioner cannot close the air guide door before power failure, so that the air guide door is blocked.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be how under the condition that power supply broke down, control wind-guiding door was closed.
In order to solve the problem, the utility model provides a reserve supply circuit and air conditioner.
In a first aspect, an embodiment of the present invention provides a standby power supply circuit, the standby power supply circuit includes: the power supply comprises a storage capacitor, a switch unit and a control unit, wherein one end of the switch unit is electrically connected with a power supply, the other end of the switch unit is electrically connected with a load, one end of the storage capacitor is connected between the switch unit and the load, the other end of the storage capacitor is grounded, the control unit is electrically connected with the switch unit, and the control unit controls the switch unit to be disconnected under the condition of receiving a fault signal of the power supply to enable the storage capacitor to supply power to the load.
In this embodiment, under the normal condition of working of power supply, supply power for the load through power supply to charge for storage capacitor, if control unit receives power supply's fault signal after, control unit control switch unit disconnection power supply and air guide door, give the air guide door power supply through storage capacitor, can make the air guide door close after power supply breaks down, avoid the dead condition of card to appear in the air guide door, thereby improved user's experience and felt.
The utility model discloses in the optional embodiment, the switch unit includes the control switch and the on-off of mutual electric connection, the on-off be used for connect in power supply reaches between the load, control switch with the control unit electricity is connected, the control unit is receiving fault signal's condition is controlled down control switch switches on, makes the control unit control the on-off disconnection.
The utility model discloses in the optional embodiment, control switch is the triode, control switch's base with the control unit electricity is connected, control switch's collecting electrode with the conduction switch electricity is connected, control switch's projecting pole ground connection.
The utility model discloses in the optional embodiment, the on-off is the relay, the on-off includes drive coil and normally open contact, the one end and the drive power supply of drive coil are connected, the other end with the control switch electricity is connected, normally open contact be used for connect in power supply reaches between the load the control unit receives under fault signal's the condition, the normally open contact disconnection power supply reaches the load.
In an optional embodiment of the present invention, the standby power supply circuit further includes a first resistor and a second resistor, after the first resistor and the second resistor are connected in series, the first resistor is electrically connected to the control unit, the second resistor is grounded, and the switch unit is connected between the first resistor and the second resistor.
In an alternative embodiment of the present invention, the resistance of the second resistor is greater than the resistance of the first resistor.
In the optional embodiment of the present invention, the standby power supply circuit further includes a first filtering unit, one end of the first filtering unit is used for being connected to the power supply, and the other end is grounded.
In the optional embodiment of the present invention, the standby power supply circuit further includes a voltage stabilizing unit, and the voltage stabilizing unit is connected between the power supply and the switch unit.
In an alternative embodiment of the present invention, the standby power supply circuit further includes a second filtering unit, one end of the second filtering unit is connected to the switch unit and between the loads, and the other end is grounded.
In a second aspect, an embodiment of the present invention provides an air conditioner, which includes the standby power supply circuit provided by the first aspect.
The beneficial effects of the air conditioner provided by the second aspect are the same as those of the standby power supply circuit provided by the first aspect, and are not described herein again.
Drawings
Fig. 1 is a block diagram illustrating the connection between an air conditioner and a power supply according to a second embodiment of the present invention.
Fig. 2 is a circuit diagram of the standby power supply circuit, the power supply and the load according to the first embodiment of the present invention.
Description of reference numerals:
100-a standby power supply circuit; 110-a storage capacitor; 120-a switching unit; 122-a control switch; 124-conducting switch; 125-driving coil; 126-normally open contact; 130-a control unit; r1 — first resistance; r2 — second resistance; 150-a voltage stabilization unit; 152-a zener diode; 160-a first filtering unit; c1 — first capacitance; c2 — second capacitance; 170-a second filtering unit; c3 — third capacitance; c4-fourth capacitance; 20-an air conditioner; 21-a power supply; 22-load; 23-a drive power supply; 24-air guide door.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
First embodiment
Referring to fig. 1 and fig. 2 in combination, the present embodiment provides a standby power supply circuit 100, and the standby power supply circuit 100 provided in the present embodiment can control the air guide door 24 to close when the power supply 21 fails, so as to improve the user experience.
In practical use of the main board of the air conditioner 20, one switching power supply circuit often has a plurality of output loops, and each output loop is not directly related, that is, the plurality of output loops are connected in parallel. Under extreme conditions, if one of them output circuit short circuit fault appears, because whole switching power supply is continuous operation, and the electric current is infinite during the short circuit, the condition that whole power supply completely stops working can appear, lead to air conditioner 20 to come too late to close air guide door 24 before the outage to the dead condition of air guide door 24 card appears, the spare power supply circuit 100 that this implementation provided can be under the condition that power supply 21 breaks down, control air guide door 24 and close, thereby user experience has been improved and has felt.
In the present embodiment, the standby power supply circuit 100 includes: the power supply system comprises a storage capacitor 110, a switch unit 120 and a control unit 130, wherein one end of the switch unit 120 is electrically connected with a power supply 21, the other end of the switch unit 120 is electrically connected with a load 22, one end of the storage capacitor 110 is connected between the switch unit 120 and the load 22, the other end of the storage capacitor 110 is grounded, the control unit 130 is electrically connected with the switch unit 120, and the control unit 130 controls the switch unit 120 to disconnect the load 22 from the power supply 21 under the condition that a fault signal of the power supply 21 is received, so that the storage capacitor 110 supplies power to the load 22.
For convenience of description, the present embodiment will be described by taking the load 22 as the air guiding door 24 by way of example. Of course, the load 22 may be other components such as other fans.
In this embodiment, under the condition that power supply 21 normally works, power is supplied to load 22 through power supply 21, and storage capacitor 110 is charged, if control unit 130 receives the fault signal of power supply 21, control unit 130 controls switch unit 120 to disconnect power supply 21 and air guide door 24, supply power to air guide door 24 through storage capacitor 110, can make air guide door 24 close after power supply 21 breaks down, avoid air guide door 24 to appear the dead condition of card, thereby user's experience is improved.
The storage capacitor 110 is a large capacitor, and is mainly responsible for supplying power to the air guide door 24 after the switch unit 120 is turned off, and the capacitance value thereof may be determined according to the current of the air guide door 24, the voltage of the air guide door 24, and the time required to close the air guide door 24, and may be calculated according to C ═ It/U, where U is the difference between the lowest operable state of the air guide door 24 and the power supply 21, I is the current of the air guide door 24, and t is the time required to close the air guide door 24. The actual value of the storage capacitor 110 should be slightly higher than the calculated value for margin reasons.
In this embodiment, the switch unit 120 includes a control switch 122 and an on-switch 124 electrically connected to each other, the on-switch 124 is used for connecting between the power supply 21 and the load 22, the control switch 122 is electrically connected to the control unit 130, and the control unit 130 controls the control switch 122 to be on under the condition that the control unit 130 receives the fault signal, so that the control unit 130 controls the on-switch 124 to be off.
In the present embodiment, under the condition that the control unit 130 receives the fault signal of the power supply 21, the control unit 130 controls the control switch 122 to be turned on, so as to control the on-switch 124 to be turned off, so that the power supply 21 is turned off from the air guiding door 24, thereby avoiding the excessive current from damaging the air guiding door 24 after the power supply 21 fails, and improving the service life of the air guiding door 24.
In this embodiment, the control switch 122 is a triode, the base of the control switch 122 is electrically connected to the control unit 130, the collector of the control switch 122 is electrically connected to the conducting switch 124, and the emitter of the control switch 122 is grounded.
In a normal case, the control unit 130 outputs a high level to turn on the collector and emitter of the control switch 122, thereby turning on the on-switch 124. When control section 130 receives the failure signal, control section 130 outputs a low level to turn off the collector and emitter of control switch 122, and controls on-switch 124 to turn off power supply 21 and air guide door 24.
In this embodiment, the conducting switch 124 is a relay, the conducting switch 124 includes a driving coil 125 and a normally open contact 126, one end of the driving coil 125 is connected to a driving power supply 23, the other end is electrically connected to the control switch 122, the normally open contact 126 is used for connecting between the power supply 21 and the load 22, and the normally open contact 126 disconnects the power supply 21 and the load 22 when the control unit 130 receives a fault signal.
Under normal conditions, the control unit 130 outputs a high level to turn on the control switch 122, one end of the coil is electrically connected to the driving power supply 23, the other end is grounded, the coil is turned on to generate a current, so that the normally open contact 126 is closed, the power supply 21 is electrically connected to the air guiding door 24 through the closed normally open contact 126, and power is supplied to the air guiding door 24.
If the control unit 130 detects a fault signal of the power supply 21, which indicates that the power supply 21 fails, at this time, the control unit 130 outputs a low level, the collector and the emitter of the control switch 122 are cut off, and the coil loses power to disconnect the normally open contact 126, so as to disconnect the power supply 21 and the air guide door 24, so that the power storage capacitor 110 supplies power to the air guide door 24, so that the air guide door 24 can be normally closed after the power supply 21 fails, thereby avoiding the occurrence of a stuck condition, and improving the experience of a user.
In this embodiment, the standby power supply circuit 100 further includes a first resistor R1 and a second resistor R2, after the first resistor R1 and the second resistor R2 are connected in series, the first resistor R1 is electrically connected to the control unit 130, the second resistor R2 is grounded, and the switch unit 120 is connected between the first resistor R1 and the second resistor R2.
In this embodiment, when the control unit 130 outputs a high level, the first resistor R1 and the second resistor R2 can protect the control unit 130, and the control switch 122 can be prevented from being damaged due to a sudden increase of the high level output by the control unit 130, so that the service life of the control switch 122 is prolonged.
In the present embodiment, the resistance of the second resistor R2 is greater than the resistance of the first resistor R1. In the case that the control unit 130 outputs a high level, the resistance of the second resistor R2 is greater than the resistance of the first resistor R1 to pull up the potentials of the first resistor R1 and the second resistor R2, and in the case that the control unit 130 outputs a high level, the base of the control switch 122 can receive a higher level, and the high level can turn on the collector of the control switch 122 and the emitter of the control switch 122.
In this embodiment, the standby power supply circuit 100 further includes a voltage stabilizing unit 150, and the voltage stabilizing unit 150 is connected between the power supply 21 and the switch unit 120.
The power supply 21 is approximately 15V, the rated operating voltage of the air guide door 24 is approximately 12V, and the voltage stabilizing unit 150 is used for stabilizing the voltage to be approximately 12V.
In this embodiment, the voltage regulation unit 150 includes two serially connected zener diodes 152, the anode of the zener diode 152 is connected to one end of the normally open contact 126, the cathode of the zener diode 152 is electrically connected to the power supply 21, the breakdown voltage of the zener diode 152 is 1.5V, and the voltage of the two series connected zener diodes 152 drops from 15V to 12V after passing through the regulated voltages of the two series connected zener diodes 152.
Of course, it is easily understood that, in other embodiments of the present invention, only one zener diode 152 with a breakdown voltage of 3V may be adopted, or three zener diodes 152 with a breakdown voltage of 1V may be adopted in series, so that the voltage at the air guiding door 24 is about 12V.
In this embodiment, the standby power supply circuit 100 further includes a first filtering unit 160, one end of the first filtering unit 160 is used for connecting with the power supply 21, and the other end is grounded.
The first filtering unit 160 includes a first capacitor C1 and a second capacitor C2, one end of the first capacitor C1 is connected between the power supply 21 and the voltage stabilizing unit 150, and the other end of the first capacitor C1 is grounded. Similarly, one end of the second capacitor C2 is connected between the power supply 21 and the voltage regulator unit 150, and the other end of the second capacitor C2 is grounded. That is, the first capacitor C1 and the second capacitor C2 are connected in parallel to each other, so as to achieve the filtering function.
In this embodiment, the standby power supply circuit 100 further includes a second filtering unit 170, one end of the second filtering unit 170 is connected between the switching unit 120 and the load 22, and the other end is grounded.
The second filtering unit 170 includes a third capacitor C3 and a fourth capacitor C4, one end of the third capacitor C3 is connected between the control switch 122 and the air guide door 24, and the other end of the third capacitor C3 is grounded. Similarly, one end of the fourth capacitor C4 is connected between the control switch 122 and the air guide door 24, and the other end of the fourth capacitor C4 is grounded. That is to say, the third capacitor C3 and the fourth capacitor C4 are connected in parallel to each other, so as to achieve the filtering function.
The working principle of the standby power supply circuit 100 provided by the embodiment is as follows: in this embodiment, when the power supply 21 works normally, the control unit 130 outputs a high level to turn on the collector and the emitter of the control switch 122, so as to power on the coil, close the normally open contact 126, and connect the power supply 21 with the air guide door 24 to supply power to the air guide door 24 and charge the storage capacitor 110. If the power supply 21 fails, the control unit 130 outputs a low level, the collector and the emitter of the control switch 122 are cut off, the normally open contact 126 is disconnected due to the loss of power of the coil, and the storage capacitor 110 supplies power to the air guide door 24, so that the air guide door 24 can be normally closed after the power supply 21 fails and is cut off.
In summary, in the standby power supply circuit 100 provided in this embodiment, in a case that the power supply 21 works normally, the power supply 21 supplies power to the load 22 and charges the storage capacitor 110, and after the control unit 130 receives a fault signal of the power supply 21, the control unit 130 controls the switch unit 120 to disconnect the power supply 21 and the air guiding door 24, and supplies power to the air guiding door 24 through the storage capacitor 110, so that the air guiding door 24 can be closed after the power supply 21 fails, and the air guiding door 24 is prevented from being jammed, thereby improving the experience of a user.
Second embodiment
The air conditioner 20 provided in this embodiment can control the air guide door 24 to close when the power supply 21 fails, so as to improve the user experience.
For the sake of brief description, where this embodiment is not mentioned, reference may be made to the first embodiment.
In the present embodiment, the air conditioner 20 includes the air guide door 24 and the backup power supply circuit 100 provided in the first embodiment, and the power supply 21 is electrically connected to the air guide door 24 through the switch unit 120.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (10)
1. A backup power supply circuit, characterized in that the backup power supply circuit (100) comprises: storage capacitor (110), switch element (120) and control unit (130), switch element (120) one end is connected with a power supply (21) electricity, and the other end is connected with a load (22) electricity, storage capacitor (110) one end connect in switch element (120) with between load (22), storage capacitor (110)'s the other end ground connection, control unit (130) with switch element (120) electricity is connected, control unit (130) is receiving under the condition of the fault signal of power supply (21) switch element (120) disconnection load (22) with power supply (21), make storage capacitor (110) give load (22) power supply.
2. The backup power supply circuit according to claim 1, wherein the switch unit (120) comprises a control switch (122) and a conducting switch (124) electrically connected to each other, the conducting switch (124) is configured to be connected between the power supply (21) and the load (22), the control switch (122) is electrically connected to the control unit (130), and the control unit (130) controls the control switch (122) to be conducted under the condition that the fault signal is received, so that the control unit (130) controls the conducting switch (124) to be disconnected.
3. The backup power supply circuit according to claim 2, wherein the control switch (122) is a triode, a base of the control switch (122) is electrically connected to the control unit (130), a collector of the control switch (122) is electrically connected to the conducting switch (124), and an emitter of the control switch (122) is grounded.
4. The backup power supply circuit according to claim 2, wherein the on-switch (124) is a relay, the on-switch (124) includes a driving coil (125) and a normally open contact (126), one end of the driving coil (125) is connected to a driving power source, the other end is electrically connected to the control switch (122), the normally open contact (126) is used for connecting between the power supply (21) and the load (22), and the normally open contact (126) disconnects the power supply (21) and the load (22) under the condition that the control unit (130) receives the fault signal.
5. The backup power supply circuit according to claim 1, wherein the backup power supply circuit (100) further comprises a first resistor and a second resistor, the first resistor is electrically connected to the control unit (130) after the first resistor and the second resistor are connected in series, the second resistor is grounded, and the switch unit (120) is connected between the first resistor and the second resistor.
6. The backup power supply circuit of claim 5, wherein said second resistor has a resistance value greater than a resistance value of said first resistor.
7. The backup power supply circuit according to claim 1, wherein the backup power supply circuit (100) further comprises a first filtering unit (160), one end of the first filtering unit (160) is used for connecting with the power supply (21), and the other end is grounded.
8. The backup power supply circuit according to claim 1, characterized in that the backup power supply circuit (100) further comprises a voltage stabilization unit (150), the voltage stabilization unit (150) being connected between the power supply source (21) and the switch unit (120).
9. The backup power supply circuit according to claim 1, wherein the backup power supply circuit (100) further comprises a second filtering unit (170), one end of the second filtering unit (170) is connected between the switching unit (120) and the load, and the other end is grounded.
10. An air conditioner, characterized in that it comprises a backup power supply circuit (100) according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120888364.3U CN214799024U (en) | 2021-04-27 | 2021-04-27 | Standby power supply circuit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120888364.3U CN214799024U (en) | 2021-04-27 | 2021-04-27 | Standby power supply circuit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214799024U true CN214799024U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120888364.3U Active CN214799024U (en) | 2021-04-27 | 2021-04-27 | Standby power supply circuit and air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN214799024U (en) |
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2021
- 2021-04-27 CN CN202120888364.3U patent/CN214799024U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20221009 Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315000 No.1166 Mingguang North Road, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. Patentee before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd. |