CN212457336U - Air conditioner control circuit, circuit board and air conditioner - Google Patents
Air conditioner control circuit, circuit board and air conditioner Download PDFInfo
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- CN212457336U CN212457336U CN202022223316.0U CN202022223316U CN212457336U CN 212457336 U CN212457336 U CN 212457336U CN 202022223316 U CN202022223316 U CN 202022223316U CN 212457336 U CN212457336 U CN 212457336U
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Abstract
The utility model discloses an air conditioner control circuit, circuit board and air conditioner. Wherein, the utility model discloses air conditioner control circuit utilizes rectifier module to carry out the rectification to the alternating current of following the input of alternating current end, supplies power to the compressor module after energy storage module energy storage, and wherein, rectifier module can be through the control to the two-way switch subassembly through setting up three-phase rectifier bridge and two-way switch subassembly for the waveform phase place of the voltage of following the input of alternating current end input and the electric current of input is unanimous, thereby solves the harmonic problem. And because the bidirectional switch component of the rectifier module is connected between the first capacitor and the second capacitor, the loss of the bidirectional switch component is reduced, and the efficiency of the circuit is improved.
Description
Technical Field
The utility model relates to an air conditioner technical field especially relates to an air conditioner control circuit, circuit board and air conditioner.
Background
At present, a common rectifier topology in an air conditioner powered by a three-phase power supply adopts a three-phase uncontrollable rectifier bridge, and the topology is generally composed of rectifier diodes and can convert three-phase alternating current into direct current to supply power to a compressor. Because the diode is a nonlinear device, the conducting current and the input voltage waveform are inconsistent, so that a rectifier can inject a large amount of harmonic waves into one side of a power grid, the power grid environment is polluted, and the electromagnetic compatibility standard cannot be met.
SUMMERY OF THE UTILITY MODEL
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the utility model provides an air conditioner control circuit, circuit board and air conditioner can improve the harmonic problem.
In a first aspect, an embodiment of the present invention provides an air conditioner control circuit, including:
the three-phase rectifier bridge comprises a first bridge arm, a second bridge arm and a third bridge arm which are connected in parallel; the bidirectional switch assembly comprises a first bidirectional switch, a second bidirectional switch and a third bidirectional switch, one end of the first bidirectional switch is connected with the midpoint of the first bridge arm, one end of the second bidirectional switch is connected with the midpoint of the second bridge arm, and one end of the third bidirectional switch is connected with the midpoint of the third bridge arm;
the energy storage module is connected with the three-phase rectifier bridge in parallel and comprises a first capacitor and a second capacitor which are connected in series, and the other end of the first bidirectional switch, the other end of the second bidirectional switch and the other end of the third bidirectional switch are connected between the first capacitor and the second capacitor;
the alternating current input end is connected with the rectifying module;
the direct current output end is connected with the energy storage module;
and the compressor module is connected with the direct current output end.
The embodiment of the utility model provides an air conditioner control circuit has following beneficial effect at least: the utility model discloses air conditioner control circuit utilizes rectifier module to carry out the rectification to the alternating current of following the input of alternating current end, supplies power to the compressor module after energy storage module energy storage, and wherein, rectifier module can be through the control to the two-way switch subassembly through setting up three-phase rectifier bridge and two-way switch subassembly for the waveform phase place of the voltage of following the input of alternating current end input and the electric current of input is unanimous, thereby solves the harmonic problem. And because the bidirectional switch component of the rectifier module is connected between the first capacitor and the second capacitor, the loss of the bidirectional switch component is reduced, and the efficiency of the circuit is improved.
In some embodiments of the present invention, the air conditioner control circuit further comprises:
and the alternating current input end is connected with the rectifying module through the inductance device.
In the technical scheme, the inductance device is arranged between the alternating current input end and the rectification module, so that harmonic waves can be filtered out, and the problem of the harmonic waves can be further improved.
In some embodiments of the present invention, the air conditioner control circuit further comprises:
the auxiliary power supply module comprises an auxiliary power supply input end, a two-phase rectifier bridge and a power supply assembly, wherein the auxiliary power supply input end is connected with the alternating current input end and the two-phase rectifier bridge respectively, and the two-phase rectifier bridge is connected with the power supply assembly in parallel.
In the technical scheme, the auxiliary power supply module can be used for supplying power to other loads by arranging the auxiliary power supply module, and the auxiliary power supply module is connected with the alternating current input end, so that electricity can be taken from the alternating current input end, and the equipment efficiency of the air conditioner is favorably improved.
In some embodiments of the present invention, the ac input comprises a first phase input, a second phase input, and a third phase input, the auxiliary power input comprises a fourth phase input and a fifth phase input, and the two-phase rectifier bridge comprises a fourth bridge arm and a fifth bridge arm;
the fourth phase input end is connected with any one of the first phase input end, the second phase input end and the third phase input end, the fourth phase input end is also connected with the midpoint of the fourth bridge arm, and the fifth phase input end is connected with the midpoint of the fifth bridge arm; or the fourth phase input end and the fifth phase input end are correspondingly connected with any two of the first phase input end, the second phase input end and the third phase input end, the fourth phase input end is further connected with the midpoint of the fourth bridge arm, and the fifth phase input end is further connected with the midpoint of the fifth bridge arm.
In the above technical scheme, the fourth phase input end is connected to any one of the first phase input end, the second phase input end and the third phase input end, that is, the auxiliary power supply module is in a phase voltage power taking mode, and the voltage and the current are low and large, thereby being beneficial to reducing the specification requirements of components and reducing the cost; and the fourth phase input end and the fifth phase input end are correspondingly connected with any two of the first phase input end, the second phase input end and the third phase input end, namely the auxiliary power supply module is in a line voltage power-taking mode, the voltage and the current are high, the safety is high, and the condition of wrong line connection can be avoided.
In some embodiments of the present invention, the air conditioner control circuit further comprises:
the first fan module comprises a direct current fan and a first driving assembly used for driving the direct current fan, and the first driving assembly is connected with the two-phase rectifier bridge in parallel.
In the above technical scheme, the air conditioner control circuit further comprises a first fan module, the first fan module takes electricity from the auxiliary power supply, and direct current can be output due to the fact that the auxiliary power supply is provided with the two-phase rectifier bridge, so that the first fan module can adopt a direct current fan, and control of rotating speed is facilitated.
In some embodiments of the present invention, the air conditioner control circuit further comprises:
and the second fan module comprises an alternating current fan and a second driving assembly used for driving the alternating current fan, and the second driving assembly is respectively connected with the alternating current input end and the alternating current fan.
In the technical scheme, the second fan module adopts the alternating current fan, and has the advantage of stable operation.
In some embodiments of the invention, the ac input comprises a first phase input, a second phase input, and a third phase input;
the second driving assembly is connected with any one of the first phase input end, the second phase input end and the third phase input end; or the second driving assembly is respectively connected with any two of the first phase input end, the second phase input end and the third phase input end.
In the above technical scheme, the second driving assembly is connected to any one of the first phase input end, the second phase input end and the third phase input end, that is, the second fan module is in a phase voltage power taking mode, and has low voltage and high current, thereby being beneficial to reducing the specification requirements of components and reducing the cost; the second driving assembly is respectively connected with any two of the first phase input end, the second phase input end and the third phase input end, namely the second fan module is in a line voltage power taking mode, the voltage is high, the current is low, the safety is high, and the condition that a wrong line is connected can be avoided.
In some embodiments of the present invention, the air conditioner control circuit further comprises:
the detection module is used for detecting at least one of the voltage value of the alternating current input end, the current value of the alternating current input end and the voltage value of the direct current output end.
In the above technical scheme, the detection module is arranged to detect the voltage value of the alternating current input end, the current value of the alternating current input end and the voltage value of the direct current output end, so that the bidirectional switch assembly can be conveniently controlled according to the detected voltage value of the alternating current input end, the detected current value of the alternating current input end and the detected voltage value of the direct current output end, and the control on the rectifying module is better realized.
In a second aspect, an embodiment of the present invention further provides a circuit board, including the first aspect, of the air conditioner control circuit. Therefore, the utility model discloses the circuit board utilizes rectifier module to carry out the rectification to the alternating current of following the input of alternating current end, supplies power to the compressor module after energy storage module energy storage, and wherein, rectifier module can be through the control to the two-way switch subassembly through setting up three-phase rectifier bridge and two-way switch subassembly for the voltage of following the input of alternating current end input is unanimous with the wave form phase place of the electric current of input, thereby solves the harmonic problem. And because the bidirectional switch component of the rectifier module is connected between the first capacitor and the second capacitor, the loss of the bidirectional switch component is reduced, and the efficiency of the circuit is improved.
In a third aspect, an embodiment of the present invention further provides an air conditioner, including the air conditioner control circuit of the first aspect. Therefore, the utility model discloses the air conditioner utilizes rectifier module to carry out the rectification to the alternating current of following the input of alternating current end, supplies power to the compressor module after energy storage module energy storage, and wherein, rectifier module can be through the control to the two-way switch subassembly through setting up three-phase rectifier bridge and two-way switch subassembly for the waveform phase place of the voltage of following the input of alternating current end input and the electric current of input is unanimous, thereby solves the harmonic problem. And because the bidirectional switch component of the rectifier module is connected between the first capacitor and the second capacitor, the loss of the bidirectional switch component is reduced, and the efficiency of the circuit is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the technical solutions of the present invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the present invention for explaining the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.
Fig. 1 is a schematic circuit diagram of a three-phase uncontrollable rectifier bridge in the prior art according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an air conditioner control circuit according to an embodiment of the present invention;
fig. 3 is another schematic circuit diagram of an air conditioner control circuit according to an embodiment of the present invention;
fig. 4 is another schematic circuit diagram of an air conditioner control circuit according to an embodiment of the present invention;
fig. 5 is another schematic circuit diagram of a control circuit of an air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a driving principle of the first to sixth switching tubes according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It should be understood that in the description of the embodiments of the present invention, a plurality (or a plurality) is/are two or more, and more, less, more, etc. are understood as excluding the number, and more, less, more, etc. are understood as including the number. If the description of "first", "second", etc. is used for the purpose of distinguishing technical features, it is not intended to indicate or imply relative importance or to implicitly indicate the number of indicated technical features or to implicitly indicate the precedence of the indicated technical features.
Referring to fig. 1, a three-phase uncontrollable rectifier bridge in the prior art is shown, the topology generally consisting of rectifier diodes, which can convert three-phase ac power into dc power to power a compressor. Because the diode is a nonlinear device, the conducting current and the input voltage waveform are inconsistent, so that a rectifier can inject a large amount of harmonic waves into one side of a power grid, the power grid environment is polluted, and the electromagnetic compatibility standard cannot be met.
Based on this, referring to fig. 2, an embodiment of the present invention provides an air conditioner control circuit, including a rectification module 201, an energy storage module 202, an ac input end, a dc output end 203, and a compressor module 204, wherein the rectification module 201 includes a three-phase rectification bridge and a bidirectional switch assembly, and the three-phase rectification bridge includes a first bridge arm 2011, a second bridge arm 2012, and a third bridge arm 2013 that are connected in parallel; the bidirectional switch assembly comprises a first bidirectional switch 2014, a second bidirectional switch 2015 and a third bidirectional switch 2016, wherein one end of the first bidirectional switch 2014 is connected with the midpoint of the first bridge arm 2011, one end of the second bidirectional switch 2015 is connected with the midpoint of the second bridge arm 2012, and one end of the third bidirectional switch 2016 is connected with the midpoint of the third bridge arm 2013; the energy storage module 202 is connected in parallel with the three-phase rectifier bridge, the energy storage module 202 comprises a first capacitor C1 and a second capacitor C2 which are connected in series, and the other end of the first bidirectional switch 2014, the other end of the second bidirectional switch 2015 and the other end of the third bidirectional switch 2016 are connected between the first capacitor C1 and the second capacitor C2; the alternating current input end is connected with the rectifying module 201, the direct current output end 203 is connected with the energy storage module 202, and the compressor module 204 is connected with the direct current output end 203.
It is understood that the ac input terminals include a first phase input terminal 2051, a second phase input terminal 2052 and a third phase input terminal 2053, the first leg 2011 includes a first diode D1 and a second diode D2 connected in series, the second leg 2012 includes a third diode D3 and a fourth diode D4 connected in series, the third leg 2013 includes a fifth diode D5 and a sixth diode D6 connected in series, and one end of the first bidirectional switch 2014 is connected to the midpoint of the first leg 2011, that is, one end of the first bidirectional switch 2014 is connected between the first diode D1 and the second diode D2; one end of second bidirectional switch 2015 is connected to the midpoint of second leg 2012, i.e., one end of second bidirectional switch 2015 is connected between third diode D3 and fourth diode D4; one end of the third bidirectional switch 2016 is connected to the midpoint of the third bridge arm 2013, i.e., one end of the third bidirectional switch 2016 is connected between the fifth diode D5 and the sixth diode D6; one end of the first bidirectional switch 2014 is connected between the first diode D1 and the second diode D2, one end of the second bidirectional switch 2015 is connected between the third diode D3 and the fourth diode D4, and one end of the third bidirectional switch 2016 is connected between the fifth diode D5 and the sixth diode D6. The alternating current input end is used for being connected with a three-phase mains supply, that is, a first phase input end 2051, a second phase input end 2052, and a third phase input end 2053 are correspondingly connected with A, B, C three-phase mains supply, a first capacitor C1 and a second capacitor C2 are electrolytic capacitors, an anode of the first capacitor C1 is connected with cathodes of a first diode D1, a third diode D3, and a fifth diode D5, a cathode of the second capacitor C2 is connected with cathodes of a second diode D2, a third diode D3, and a sixth diode D6, the three-phase mains supply is rectified by the rectification module 201 and outputs a direct current signal to the compressor module 204, and the direct current output end 203 may be a common end of the first capacitor C1, a common end of the first capacitor C1 and the second capacitor C2, and a cathode of the second capacitor C2, and a common end of the first capacitor C1 and the second capacitor C2 may be connected with a zero line or not connected with the zero line, depending on actual requirements. The compressor module 204 includes a compressor 2042 and a first IPM module 2031, and the dc signal output from the dc output terminal 203 is used to power the compressor 2042 via the first IPM module 2041. It is understood that the number of compressor modules 204 may be one or more.
It is understood that the first, second and third bidirectional switches 2014, 2015 and 2016 may include two switch tubes, wherein the first bidirectional switch 2014 includes a first switch tube T1 and a second switch tube T2, wherein emitters of the first switch tube T1 and the second switch tube T2 are connected, a collector of the first switch tube T1 is connected to a common terminal of the first diode D1 and the second diode D2, and a collector of the second switch tube T2 is connected to a common terminal of the first capacitor C1 and the second capacitor C2. It is understood that the collectors of the first switch transistor T1 and the second switch transistor T2 may be connected, the emitter of the first switch transistor T1 is connected to the common terminal of the first diode D1 and the second diode D2, and the emitter of the second switch transistor T2 is connected to the common terminal of the first capacitor C1 and the second capacitor C2. Wherein, the first bidirectional switch 2014 may employ an insulated gate bipolar transistor IGBT, an integrated gate commutated thyristor IGCT, a metal oxide semiconductor field effect transistor MOSFET, etc., it is understood that, when the first bidirectional switch 2014 employs a MOSFET, the emitters of the first switch tube T1 and the second switch tube T2 are connected, that is, the sources of the first switch tube T1 and the second switch tube T2 are connected correspondingly. Alternatively, the collectors of the first and second switching tubes T1 and T2 are connected, that is, the drains of the first and second switching tubes T1 and T2 are connected accordingly. In addition, the first bidirectional switch 2014 may be realized by parallel reverse-resistance switches.
The second bidirectional switch 2015 includes a third switch transistor T3 and a fourth switch transistor T4, wherein emitters of the third switch transistor T3 and the fourth switch transistor T4 are connected, a collector of the third switch transistor T3 is connected to a common terminal of the third diode D3 and the fourth diode D4, and a collector of the fourth switch transistor T4 is connected to a common terminal of the first capacitor C1 and the second capacitor C2. It is understood that the collector of the third switch transistor T3 may be connected to the collector of the fourth switch transistor T4, the emitter of the third switch transistor T3 may be connected to the common terminal of the third diode D3 and the fourth diode D4, and the emitter of the fourth switch transistor T4 may be connected to the common terminal of the first capacitor C1 and the second capacitor C2. It is understood that, when the second bidirectional switch 2015 is implemented as a MOSFET, the emitters of the third switching tube T3 and the fourth switching tube T4 are connected, that is, the sources of the third switching tube T3 and the fourth switching tube T4 are connected correspondingly. Alternatively, the third switch transistor T3 is connected to the collector of the fourth switch transistor T4, that is, the drain of the third switch transistor T3 is connected to the drain of the fourth switch transistor T4. In addition, the second bidirectional switch 2015 can also be implemented by parallel connection of reverse-blocking switch tubes.
The third bidirectional switch 2016 comprises a fifth switch transistor T5 and a sixth switch transistor T6, wherein the emitters of the fifth switch transistor T5 and the sixth switch transistor T6 are connected, the collector of the fifth switch transistor T5 is connected to the common terminal of the fifth diode D5 and the sixth diode D6, and the collector of the sixth switch transistor T6 is connected to the common terminal of the first capacitor C1 and the second capacitor C2. It is understood that the collectors of the fifth and sixth switching tubes T5 and T6 may be connected, the emitter of the fifth switching tube T5 is connected to the common terminal of the fifth and sixth diodes D5 and D6, and the emitter of the sixth switching tube T6 is connected to the common terminal of the first and second capacitors C1 and C2. It should be understood that, when the third bidirectional switch 2016 is a MOSFET, the emitter of the fifth switch transistor T5 and the emitter of the sixth switch transistor T6 are connected, that is, the sources of the fifth switch transistor T5 and the sixth switch transistor T6 are connected, respectively. Alternatively, the collectors of the fifth and sixth switching tubes T5 and T6 are connected, that is, the drains of the fifth and sixth switching tubes T5 and T6 are connected accordingly. The third bidirectional switch 2016 may be implemented by parallel reverse-blocking switching transistors.
It should be noted that the first switching tube T1, the second switching tube T2, the third switching tube T3, the fourth switching tube T4, the fifth switching tube T5 and the sixth switching tube T6 are all connected in parallel in reverse to each other with a diode.
It can be understood that the ac input terminal is connected to the rectifier module 201 through the inductor 206, and the inductor 206 is disposed between the ac input terminal and the rectifier module 201, so as to filter out harmonic waves and further improve the problem of harmonic waves. Specifically, the inductive device 206 includes a first inductor L1, a second inductor L2, and a third inductor L3, the first inductor L1 is connected to the first phase input terminal 2051, the second inductor L2 is connected to the second phase input terminal 2052, and the third inductor L3 is connected to the third phase input terminal 2053.
It is understood that the air conditioner control circuit may further include an auxiliary power supply module and a first fan module 209, the auxiliary power supply module includes an auxiliary power supply input terminal, a two-phase rectifier bridge and a power supply module 208, the auxiliary power supply input terminal is connected to the ac input terminal and the two-phase rectifier bridge, respectively, and the two-phase rectifier bridge is connected in parallel with the power supply module 208. Through setting up auxiliary power source module, can utilize auxiliary power source module to supply power for other loads to auxiliary power source module connects AC input end, can follow and get the electricity in the AC input end, is favorable to promoting the equipment efficiency of air conditioner. The power supply component 208 is a power supply circuit that is common in the prior art, and includes a power supply chip, a voltage regulation chip, and so on, which are not described herein again.
It is understood that the auxiliary power input terminals include a fourth phase input terminal 2101 and a fifth phase input terminal 2102, and the two-phase rectifier bridge includes a fourth leg 2071 and a fifth leg 2072, wherein the fourth leg 2071 includes a seventh diode D7 and an eighth diode D8 connected in series with each other, the fifth leg 2072 includes a ninth diode D9 and a twelfth diode D10 connected in series with each other, the fourth phase input terminal 2101 is connected to the middle points of the third phase input terminal 2053 and the fourth leg 2071, respectively, and the fourth phase input terminal 2101 is connected to the middle point of the fourth leg 2071, that is, the fourth phase input terminal 2101 is connected between the seventh diode D7 and the eighth diode D8; fifth phase input 2102 is connected to a midpoint of fifth leg 2072, i.e., fifth phase input 2102 is connected between ninth diode D9 and twelfth diode D10. The fourth phase input end 2101 is connected to any one of the first phase input end 2051, the second phase input end 2052 and the third phase input end 2053, and the fifth phase input end 2102 is connected to a zero line, that is, the auxiliary power supply module is in a phase voltage power taking mode, so that the voltage is low, the current is high, the specification requirements of components are reduced, and the cost is reduced. It should be added that fig. 2 illustrates that the fourth phase input terminal 2101 is connected to the third phase input terminal 2053 (i.e., the commercial power C phase).
It will be appreciated that the first fan module 209 includes a dc fan 2092 and a first drive assembly for driving the dc fan 2092, the first drive assembly being connected in parallel with the two-phase rectifier bridge. The air conditioner control circuit further comprises a first fan module 209, and the first fan module 209 takes power from the auxiliary power supply, and can output direct current due to the fact that the auxiliary power supply is provided with the two-phase rectifier bridge, so that the first fan module 209 can adopt the direct current fan 2092, and control of the rotating speed is facilitated. The first drive assembly may be the second IPM module 2091. It is understood that the number of the first fan modules 209 may be one or more.
In addition, the auxiliary power supply module can be in a phase voltage power supply mode and a line voltage power supply mode, referring to fig. 3, the auxiliary power supply input end includes a fourth phase input end 2101 and a fifth phase input end 2102, the two-phase rectifier bridge includes a fourth bridge arm 2071 and a fifth bridge arm 2072, wherein the fourth bridge arm 2071 includes a seventh diode D7 and an eighth diode D8 which are connected in series, the fifth bridge arm 2072 includes a ninth diode D9 and a twelfth diode D10 which are connected in series, the fourth phase input end 2101 is respectively connected with the middle points of the third phase input end 2053 and the fourth bridge arm 2071, and the fourth phase input end 2101 is connected with the middle point of the fourth bridge arm 2071, that is, the fourth phase input end 2101 is connected between the seventh diode D7 and the eighth diode D8; fifth phase input 2102 is connected to a midpoint of fifth leg 2072, i.e., fifth phase input 2102 is connected between ninth diode D9 and twelfth diode D10. The fourth phase input end 2101 and the fifth phase input end 2102 are correspondingly connected with any two of the first phase input end 2051, the second phase input end 2052 and the third phase input end 2053, namely, the auxiliary power supply module is in a line voltage power taking mode, voltage is high, current is low, safety is high, and the situation of wrong line connection can be avoided. The fourth phase input end 2101 and the fifth phase input end 2102 are correspondingly connected to any two of the first phase input end 2051, the second phase input end 2052, and the third phase input end 2053, for example, the fourth phase input end 2101 is connected to the first phase input end 2051 (i.e., a utility a phase), and the fifth phase input end 2102 is connected to the second phase input end 2052 (i.e., a utility B phase); or the fourth phase input terminal 2101 may be connected to the second phase input terminal 2052 (i.e., the B-phase mains supply), and the fifth phase input terminal 2102 may be connected to the third phase input terminal 2053 (i.e., the C-phase mains supply); or the fourth phase input 2101 may be connected to the first phase input 2051 (i.e., the mains a phase) and the fifth phase input 2102 may be connected to the third phase input 2053 (i.e., the mains C phase). It should be noted that fig. 3 illustrates an example in which the fourth phase input terminal 2101 is connected to the first phase input terminal 2051 (i.e., the mains a phase), and the fifth phase input terminal 2102 is connected to the third phase input terminal 2053 (i.e., the mains C phase).
In addition, it can be understood that the first fan module 209 may also be replaced with a second fan module 401, and referring to fig. 4, the second fan module 401 includes an ac fan 4011 and a second driving component for driving the ac fan 4011, and the second driving component is connected to the ac input terminal and the ac fan 4011, respectively. Wherein, the second driving component can be a starting capacitor and a patch cord. The second fan module 401 adopts the alternating current fan 4011, and has the advantage of stable operation. On this basis, the second fan module 401 can independently get the electricity from the commercial power, and the second drive assembly connects any one in first phase input end 2051, second phase input end 2052 and third phase input end 2053, and second fan module 401 is the looks voltage and gets the electricity mode promptly, and the low electric current of voltage is big, is favorable to reducing the specification requirement of components and parts, reduce cost. It should be added that fig. 4 illustrates an example in which the second driving component is connected to the third phase input terminal 2053 (i.e., the commercial power C phase). It is understood that the number of the second fan modules 401 may be one or more.
In addition, the second fan module 401 may be in a phase voltage power taking mode and a line voltage power taking mode, referring to fig. 5, the second fan module 401 includes an ac fan 4011 and a second driving component for driving the ac fan 4011, and the second driving component is connected to the ac input terminal and the ac fan 4011, respectively. Wherein, the second driving component can be a starting capacitor and a patch cord. The second fan module 401 adopts the alternating current fan 4011, and has the advantage of stable operation. On this basis, second fan module 401 can be alone follow the commercial power and get the electricity, and second drive assembly connects two arbitrary in first phase input end 2051, second phase input end 2052 and the third phase input end 2053 respectively, and second fan module 401 is the line voltage and gets the electricity mode promptly, and the voltage high current is little, and the security is high to can avoid connecing the condition of wrong line to appear. The second driving component is respectively connected to any two of the first phase input end 2051, the second phase input end 2052, and the third phase input end 2053, for example, the second driving component is respectively connected to the first phase input end 2051 (i.e., the utility power a phase) and the second phase input end 2052 (i.e., the utility power B phase); or the second drive assembly may be connected to the second phase input port 2052 (i.e., the mains phase B) and the third phase input port 2053 (i.e., the mains phase C), respectively; or the second drive assembly may be connected to the first phase input 2051 (i.e. mains a phase) and the third phase input 2053 (i.e. mains C phase), respectively. It should be noted that fig. 5 illustrates an example in which the second driving component is connected to the first phase input terminal 2051 (i.e., the a-phase mains supply) and the third phase input terminal 2053 (i.e., the C-phase mains supply).
In summary, the auxiliary power module has two modes of wired voltage power taking and phase voltage power taking, the second fan module 401 also has two modes of wired voltage power taking and phase voltage power taking, and the power taking modes of the auxiliary power module and the second fan module 401 are independent from each other, that is, the auxiliary power module adopts the line voltage power taking mode, and the second fan module 401 adopts the phase voltage power taking mode; or, the auxiliary power supply module may adopt a phase voltage power-taking mode, and the second fan module 401 adopts a line voltage power-taking mode; or, the auxiliary power supply module and the second fan module 401 both adopt a phase voltage power taking mode; or, the auxiliary power module and the second fan module 401 may both adopt a line voltage power-taking mode.
It can be understood that the power taking port of the second fan module 401 and the power taking port of the auxiliary power supply can be the same, namely, the second driving assembly is connected with the input end of the auxiliary power supply, and the mode has the advantages that the wiring ports of the circuit can be reduced, and the wiring efficiency of the circuit is improved.
It is understood that the air conditioner control circuit may further include a detection module (not shown in the drawings) for detecting a voltage value at the ac input terminal, a current value at the ac input terminal, and a voltage value at the dc output terminal 203. By setting the voltage value of the detection module for detecting the ac input end, the current value of the ac input end and the voltage value of the dc output end 203, it is possible to control the bidirectional switch assembly conveniently according to the voltage value of the detection module for detecting the ac input end, the current value of the ac input end and the voltage value of the dc output end 203, thereby better realizing the control of the rectifier module 201. Referring to fig. 6, the detection module may employ a voltage sensor or a current sensor, a voltage value or a current value detected by the detection module may be sent to the controller, and the controller sends a corresponding control pulse signal to the bidirectional switch assembly after processing, so as to control the actions of each switching tube in the bidirectional switch assembly. For example, taking the first bidirectional switch 2014 as an example, the first switch tube T1 and the second switch tube T2 may be controlled to conduct synchronously, conduct complementarily, and the like, so as to control the rectifier module 201.
When the voltage values of the first phase input end 2051, the second phase input end 2052 and the third phase input end 2053 are sampled through the voltage sensors, only the voltage values of any two ends of the first phase input end 2051, the second phase input end 2052 and the third phase input end 2053 can be sampled, and the voltage value of the third end is obtained through the voltage values of any two ends, so that one voltage sensor can be saved, and the circuit cost is reduced. Specifically, based on the principle that the vector sum of the voltage values of the first phase input terminal 2051, the second phase input terminal 2052, and the third phase input terminal 2053 is zero, the voltage value of the remaining terminal can be obtained by negating the sum of the voltage values of any two terminals of the first phase input terminal 2051, the second phase input terminal 2052, and the third phase input terminal 2053. Similarly, when the current values of the first phase input end 2051, the second phase input end 2052 and the third phase input end 2053 are sampled by the current sensors, only the current values of any two ends of the first phase input end 2051, the second phase input end 2052 and the third phase input end 2053 can be sampled, and the current value of the third end can be obtained by the current values of any two ends, so that one current sensor can be saved, and the circuit cost can be reduced. Specifically, the current value at the remaining end can be obtained by negating the sum of the current values at any two ends of the first phase input end 2051, the second phase input end 2052, and the third phase input end 2053, based on the principle that the vector sum of the current values at the first phase input end 2051, the second phase input end 2052, and the third phase input end 2053 is zero.
It can be understood that, the above-mentioned detection module can also adopt a voltage sampling circuit, a current sampling circuit, etc. except adopting a voltage sensor or a current sensor, the embodiment of the present invention is not limited, as long as the voltage value of the ac input end, the current value of the ac input end and the voltage value of the dc output end 203 can be obtained.
The utility model discloses air conditioner control circuit utilizes rectifier module 201 to carry out the rectification to the alternating current of following the input of alternating current end, supplies power to compressor module 204 after energy storage module 202 energy storage, and wherein, rectifier module 201 can be through the control to the two-way switch subassembly through setting up three-phase rectifier bridge and two-way switch subassembly for the waveform phase place of the voltage of following the input of alternating current end input and the electric current of input is unanimous, thereby solves the harmonic problem. In addition, since the bidirectional switch component of the rectifier module 201 is connected between the first capacitor C1 and the second capacitor C2, the loss of the bidirectional switch component is reduced, and the efficiency of the circuit is improved.
Additionally, the embodiment of the utility model provides a still provide a circuit board, including the air conditioner control circuit in the above-mentioned embodiment. Therefore, the utility model discloses the circuit board utilizes rectifier module 201 to carry out the rectification to the alternating current of following the input of alternating current end, supplies power to compressor module 204 after energy storage module 202 energy storage, and wherein, rectifier module 201 can be through the control to the two-way switch subassembly through setting up three-phase rectifier bridge and two-way switch subassembly for the waveform phase place of the voltage of following the input of alternating current end input and the electric current of input is unanimous, thereby solves the harmonic problem. In addition, since the bidirectional switch component of the rectifier module 201 is connected between the first capacitor C1 and the second capacitor C2, the loss of the bidirectional switch component is reduced, and the efficiency of the circuit is improved.
Additionally, the embodiment of the utility model provides an air conditioner is still provided, including the air conditioner control circuit in the above-mentioned embodiment. Therefore, the utility model discloses the air conditioner utilizes rectifier module 201 to carry out the rectification to the alternating current of following the input of alternating current end, supplies power to compressor module 204 after energy storage module 202 energy storage, and wherein, rectifier module 201 can be through the control to the two-way switch subassembly through setting up three-phase rectifier bridge and two-way switch subassembly for the waveform phase place of the voltage of following the input of alternating current end input and the electric current of input is unanimous, thereby solves the harmonic problem. In addition, since the bidirectional switch component of the rectifier module 201 is connected between the first capacitor C1 and the second capacitor C2, the loss of the bidirectional switch component is reduced, and the efficiency of the circuit is improved.
It should also be appreciated that the various embodiments provided by the embodiments of the present invention can be combined arbitrarily to achieve different technical effects.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. An air conditioner control circuit, comprising:
the three-phase rectifier bridge comprises a first bridge arm, a second bridge arm and a third bridge arm which are connected in parallel; the bidirectional switch assembly comprises a first bidirectional switch, a second bidirectional switch and a third bidirectional switch, one end of the first bidirectional switch is connected with the midpoint of the first bridge arm, one end of the second bidirectional switch is connected with the midpoint of the second bridge arm, and one end of the third bidirectional switch is connected with the midpoint of the third bridge arm;
the energy storage module is connected with the three-phase rectifier bridge in parallel and comprises a first capacitor and a second capacitor which are connected in series, and the other end of the first bidirectional switch, the other end of the second bidirectional switch and the other end of the third bidirectional switch are connected between the first capacitor and the second capacitor;
the alternating current input end is connected with the rectifying module;
the direct current output end is connected with the energy storage module;
and the compressor module is connected with the direct current output end.
2. The air conditioner control circuit according to claim 1, further comprising:
and the alternating current input end is connected with the rectifying module through the inductance device.
3. The air conditioner control circuit according to claim 1, further comprising:
the auxiliary power supply module comprises an auxiliary power supply input end, a two-phase rectifier bridge and a power supply assembly, wherein the auxiliary power supply input end is connected with the alternating current input end and the two-phase rectifier bridge respectively, and the two-phase rectifier bridge is connected with the power supply assembly in parallel.
4. The air conditioner control circuit according to claim 3, wherein:
the alternating current input end comprises a first phase input end, a second phase input end and a third phase input end, the auxiliary power supply input end comprises a fourth phase input end and a fifth phase input end, and the two-phase rectifier bridge comprises a fourth bridge arm and a fifth bridge arm;
the fourth phase input end is connected with any one of the first phase input end, the second phase input end and the third phase input end, the fourth phase input end is also connected with the midpoint of the fourth bridge arm, and the fifth phase input end is connected with the midpoint of the fifth bridge arm; or the fourth phase input end and the fifth phase input end are correspondingly connected with any two of the first phase input end, the second phase input end and the third phase input end, the fourth phase input end is further connected with the midpoint of the fourth bridge arm, and the fifth phase input end is further connected with the midpoint of the fifth bridge arm.
5. The air conditioner control circuit according to claim 3, further comprising:
the first fan module comprises a direct current fan and a first driving assembly used for driving the direct current fan, and the first driving assembly is connected with the two-phase rectifier bridge in parallel.
6. The air conditioner control circuit according to any one of claims 1 to 4, further comprising:
and the second fan module comprises an alternating current fan and a second driving assembly used for driving the alternating current fan, and the second driving assembly is respectively connected with the alternating current input end and the alternating current fan.
7. The air conditioner control circuit according to claim 6, wherein:
the alternating current input ends comprise a first phase input end, a second phase input end and a third phase input end;
the second driving assembly is connected with any one of the first phase input end, the second phase input end and the third phase input end; or the second driving assembly is respectively connected with any two of the first phase input end, the second phase input end and the third phase input end.
8. The air conditioner control circuit according to claim 1, further comprising:
the detection module is used for detecting at least one of the voltage value of the alternating current input end, the current value of the alternating current input end and the voltage value of the direct current output end.
9. A circuit board, characterized by: including the air conditioner control circuit of any one of claims 1 to 8.
10. An air conditioner, characterized in that: including the air conditioner control circuit of any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022223316.0U CN212457336U (en) | 2020-09-30 | 2020-09-30 | Air conditioner control circuit, circuit board and air conditioner |
| PCT/CN2020/129436 WO2022068007A1 (en) | 2020-09-30 | 2020-11-17 | Air conditioner control circuit, air conditioner control method, circuit board, and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022223316.0U CN212457336U (en) | 2020-09-30 | 2020-09-30 | Air conditioner control circuit, circuit board and air conditioner |
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| CN212457336U true CN212457336U (en) | 2021-02-02 |
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| CN202022223316.0U Active CN212457336U (en) | 2020-09-30 | 2020-09-30 | Air conditioner control circuit, circuit board and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4138289A1 (en) * | 2021-08-19 | 2023-02-22 | Carrier Corporation | Dual mode converter for air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4138289A1 (en) * | 2021-08-19 | 2023-02-22 | Carrier Corporation | Dual mode converter for air conditioning system |
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