CN110753440A - Drive control circuit board and air conditioner - Google Patents
Drive control circuit board and air conditioner Download PDFInfo
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- CN110753440A CN110753440A CN201911054963.9A CN201911054963A CN110753440A CN 110753440 A CN110753440 A CN 110753440A CN 201911054963 A CN201911054963 A CN 201911054963A CN 110753440 A CN110753440 A CN 110753440A
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- Prior art keywords
- circuit board
- control circuit
- drive control
- component
- circuit
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
Abstract
The invention provides a drive control circuit board and an air conditioner, wherein the drive control circuit board comprises: the driving circuit comprises a substrate, a driving circuit and a driving circuit, wherein the substrate is provided with a direct current driving circuit and an alternating current driving circuit; and the static circuit is arranged on the substrate and is arranged between the alternating current driving circuit and the direct current driving circuit so as to isolate the alternating current driving circuit and the direct current driving circuit, wherein the direct current driving circuit is configured to be capable of driving a direct current load to operate, and the alternating current driving circuit is configured to be capable of driving an alternating current load to operate. The static circuit on the drive control circuit board is arranged between the alternating current drive circuit and the direct current drive circuit, so that the electromagnetic interference of the direct current drive circuit can be shielded, and the electromagnetic interference of the direct current drive circuit is prevented from being coupled to the alternating current circuit.
Description
Technical Field
The invention relates to the field of electrical equipment, in particular to a drive control circuit board and an air conditioner.
Background
In the related art, an ac circuit in an electric control board of an air conditioner generally does not have the problem of electromagnetic interference, so the ac circuit is generally not provided with an electromagnetic interference filter. However, if other circuits with electromagnetic interference are close to the ac circuit, the interference generated by these circuits with electromagnetic interference is very easily coupled to the ac circuit, and the ac circuit is not provided with an electromagnetic interference filter circuit, which easily causes the problem that the electromagnetic interference of the product exceeds the standard.
Moreover, any discussion of the prior art throughout the specification is not an admission that the prior art is necessarily known to a person of ordinary skill in the art, and any discussion of the prior art throughout the specification is not an admission that the prior art is necessarily widely known or forms part of common general knowledge in the field.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, an object of the present invention is to provide a drive control circuit board.
Another object of the present invention is to provide an air conditioner.
In order to achieve the above object, according to an aspect of the first aspect of the present invention, there is provided a drive control circuit board including: the driving circuit comprises a substrate, a driving circuit and a driving circuit, wherein the substrate is provided with a direct current driving circuit and an alternating current driving circuit; and the static circuit is arranged on the substrate and is arranged between the alternating current driving circuit and the direct current driving circuit so as to isolate the alternating current driving circuit and the direct current driving circuit, wherein the direct current driving circuit is configured to be capable of driving a direct current load to operate, and the alternating current driving circuit is configured to be capable of driving an alternating current load to operate.
In the technical scheme, the static circuit on the drive control circuit board is arranged between the alternating current drive circuit and the direct current drive circuit, so that the electromagnetic interference of the direct current drive circuit can be shielded, and the electromagnetic interference of the direct current drive circuit is prevented from being coupled to the alternating current circuit. The drive control circuit board may be simply referred to as a circuit board in this context.
In any of the above technical solutions, the static circuit is a temperature sensor circuit, a copper-clad isolation layer is disposed on the surface of the static circuit, and/or a copper-clad isolation structure is disposed between the temperature sensor circuit and the ac driving circuit.
In the technical scheme, the static circuit has the effect of shielding electromagnetic interference, and the temperature sensor circuit is a static circuit commonly used by an air conditioner circuit board, so that the temperature sensor circuit is arranged between the alternating current driving circuit and the direct current driving circuit as the static circuit capable of shielding the electromagnetic interference to shield the electromagnetic interference generated by the direct current driving circuit.
Specifically, the surface of the temperature sensor circuit is subjected to copper-clad treatment, so that a copper-clad isolating layer structure is formed on the surface of the temperature sensor circuit, and the copper-clad isolating layer can further shield electromagnetic interference generated by the direct current driving circuit. Or a copper-clad partition structure is arranged between the temperature sensor circuit and the alternating current drive circuit, the copper-clad partition structure is arranged at a position between the temperature sensor circuit and the alternating current drive circuit, electromagnetic interference generated by the direct current drive circuit is firstly shielded by the temperature sensor and then secondarily shielded by the arranged copper-clad partition structure, two layers of shielding are arranged between the direct current drive circuit and the alternating current drive circuit, and multi-section shielding is carried out on the electromagnetic interference generated by the direct current drive circuit, so that the electromagnetic interference coupled to the alternating current circuit is reduced.
In any one of the above technical solutions, the ac driving circuit includes: the two input terminals are arranged on the substrate and used for accessing power supply signals; the circuit comprises a safety component, wherein a connecting line between two terminals of the safety component and a connecting line between two input terminals are arranged in parallel, one path of power supply signal is connected to the first end of the safety component through a first wiring layer of a substrate, the other path of power supply signal is connected to the first end of a first filtering component through a second wiring layer of the substrate, and an insulating layer is arranged between the first wiring layer and the second wiring layer.
In the technical scheme, the connecting line between the two terminals of the safety component and the connecting line between the two input terminals are placed in parallel, the input terminals, the safety component and the first filter component are arranged according to the above mode, and the power supply signal is accessed in a form similar to a twisted pair, so that the enclosed area between a power supply line and the safety component is reduced, the electromagnetic interference of the driving control circuit board on external electric appliances is reduced, and meanwhile, the electromagnetic interference between electronic elements on the circuit board is also reduced.
In any one of the above technical solutions, the driving control circuit board further includes: and the second end of the insurance component is connected to the second end of the first filtering component through the first wiring layer and is used for filtering electromagnetic interference signals flowing through the insurance component.
In the technical scheme, the second end of the fuse assembly is connected to the second end of the first filter assembly through the first wiring layer, and the electromagnetic interference signals flowing through the fuse assembly are filtered through the first filter assembly, so that the electromagnetic interference signals on the circuit board are further reduced, and the MC (ctro mechanical compatibility) performance of the circuit board is improved.
In any of the above technical solutions, a connection line between two terminals of the first filter component and a connection line between two terminals of the fuse component are arranged in parallel, wherein the first end of the first filter component is arranged near the second end of the fuse component, and the second end of the first filter component is arranged near the first end of the fuse component.
In the technical scheme, the first end of the first filtering component is arranged close to the second end of the insurance component, the second end of the first filtering component is arranged close to the first end of the insurance component, and on the whole, the connecting line between the two terminals of the first filtering component and the connecting line between the two terminals of the insurance component are kept in a parallel or approximately parallel state as far as possible, so that the enclosed area of the first filtering component and the insurance component is reduced as far as possible, and the coupling effect on electromagnetic interference is reduced.
In any one of the above technical solutions, the driving control circuit board further includes: the common-mode inductance assembly comprises a first inductance coil and a second inductance coil which are in a common mode, and the inductance wiring direction of the common-mode inductance assembly is perpendicular to the connecting line between the two input terminals of the first filtering assembly.
In the technical scheme, the common-mode inductance assembly comprises two inductance coils which respectively correspond to two power supply signals, the wiring direction of the inductance coils is perpendicular to the connecting line between the two terminals of the first filtering assembly, the enclosed area between the inductance coils and the filtering assembly is reduced as much as possible, and in addition, interference signals generated by the inductance coils and interference signals generated by the first filtering assembly are reduced.
In any of the above technical solutions, the first end of the first filter assembly is connected to the input end of the second inductor coil by the second wiring layer, and the second end of the first filter assembly is connected to the input end of the first inductor coil by the first wiring layer.
In the technical scheme, the wiring position between the filter assembly and the common-mode inductance assembly is determined according to the current flow direction, the two wiring terminals of the first filter assembly are respectively positioned in different wiring layers of the circuit board, wires positioned in the different wiring layers can be overlapped and also can be arranged in parallel, the loop area between the wires is reduced as much as possible, the coupling of electromagnetic interference to the outside is reduced, and the MC performance of the circuit is improved.
In any of the above technical solutions, the ac driving circuit further includes: the first inductance coil is connected to the first end of the relay through the first wiring layer, the output end of the relay is connected to the first end of the voltage stabilizing diode, the second inductance coil is connected to the second end of the voltage stabilizing diode through the second wiring layer, the output end of the relay is connected to a bus line of a load, and the power supply signal is an alternating current signal.
In any of the above technical solutions, the ac driving circuit further includes: the first end and the second end of the voltage stabilizing diode are respectively connected to the output end of the relay and the input end of the rectifier; the output end of the rectifier is sequentially connected to the electrolytic capacitor and the alternating current load, the rectifier is configured to convert the alternating current signal into a direct current signal, and the bus line is configured to carry the direct current signal.
In the technical scheme, the first end of the relay is connected with the first inductance coil through the first wiring layer, the output end of the relay is connected to the first end of the voltage stabilizing diode, the first end of the voltage stabilizing diode is connected to the output end of the relay, the output end of the relay is connected to the input end of the rectifier, the second end of the output end of the rectifier is connected with the second inductance coil through the second wiring layer, the two inductance coils of the common-mode inductance component are connected with the relay and the rectifier through different wiring layers, the parallel of the wiring layers is kept as much as possible, the loop area is reduced, the coupling effect of the circuit on electromagnetic interference signals is reduced, and the MC performance.
In any one of the above technical solutions, the driving control circuit board further includes: and the second end of the fuse component is connected to the first end of the second filter component through the second wiring layer, and the second end of the second filter component is connected to the ground terminal.
In the technical scheme, the wiring between the second filtering component and the safety component and the wiring between the first filtering component and the safety component are distributed on different wiring layers, on one hand, the wiring reduces the total area of a loop formed by the wiring, on the other hand, the wiring in different wiring layers can be distributed in a mode similar to a twisted pair, interference signals generated by coupling are mutually offset, and the MC performance of the circuit is improved.
In any one of the above technical solutions, the driving control circuit board further includes: and the second end of the first filter assembly is connected to the first end of the third filter assembly through the second wiring layer, and the second end of the third filter assembly is connected to the ground terminal.
In the technical scheme, the second end of the first filtering component is connected to the third filtering component from the second wiring layer, the wiring of the first filtering component on the first wiring layer and the wiring of the first filtering component on the second wiring layer are arranged in a manner similar to a twisted pair, interference signals generated by coupling are mutually offset, and the MC performance of the circuit is improved.
According to a second aspect of the present invention, there is provided an air conditioner comprising: the drive control circuit board defined in any one of the above technical solutions; and a motor load connected to the drive control circuit board, the drive control circuit board configured to control the motor load to operate. The air conditioner has all the beneficial effects of the drive control circuit board in any technical scheme, and the description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic diagram of a drive control circuit board according to one embodiment of the invention;
FIG. 2 is a diagram showing disturbance power test of a drive control circuit board in the prior art;
FIG. 3 shows a disturbance power test chart of a drive control board according to another embodiment of the invention;
fig. 4 shows a schematic diagram of an air conditioner according to an embodiment of the present invention.
The solid line traces in fig. 1 are laid out on the first wiring layer, the dotted line traces in fig. 1 are laid out on the second wiring layer, and the corresponding relationship between the structure and the marks shown in fig. 1 is as follows:
100 substrates, 200 static circuits, 300 copper-attached isolation layers, 400 direct current driving circuits, 500 alternating current driving circuits, 510 input terminal units, 512 ground terminals, 520 first filtering components, 530 common mode inductance components, 532 first inductance coils, 534 second inductance coils, 540 fuse components, 550 relays, 560 rectifiers, 570 voltage-stabilizing diodes, 580 second filtering components and 590 third filtering components.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The first embodiment is as follows:
fig. 1 shows a schematic diagram of a drive control circuit board according to an embodiment of the present invention.
As shown in fig. 1, a drive control circuit board according to an embodiment of the present invention includes: the substrate 100 and the static circuit 200 are specifically characterized as follows:
the board 100 is provided with a tributary drive circuit 400 and an ac drive circuit 500.
The static circuit 200 is disposed on the substrate 100, and the static circuit 200 is disposed between the ac driving circuit 500 and the tributary driving circuit 400 to isolate the ac driving circuit 500 from the tributary driving circuit 400.
The tributary driving circuit 400 is configured to drive the dc load operation, and the ac driving circuit 500 is configured to drive the ac load operation.
In this technical solution, by setting the static circuit 200 on the drive control circuit board between the ac drive circuit 500 and the tributary drive circuit 400, the electromagnetic interference of the tributary drive circuit 400 can be shielded, and the electromagnetic interference of the tributary drive circuit 400 is prevented from being coupled to the ac circuit. The drive control circuit board may be simply referred to as a circuit board in this context.
In any of the above technical solutions, the static circuit 200 is a temperature sensor circuit, the surface of the static circuit 200 is provided with a copper-clad isolation layer 300, and/or a copper-clad isolation structure is provided between the temperature sensor circuit and the ac driving circuit 500.
In this technical solution, the static circuit 200 has an effect of shielding electromagnetic interference, and the temperature sensor circuit is the static circuit 200 commonly used in the air conditioner circuit board, so the temperature sensor circuit is disposed between the ac driving circuit 500 and the branch driving circuit 400 as the static circuit 200 capable of shielding electromagnetic interference, and shields electromagnetic interference generated by the branch driving circuit 400.
In some embodiments, the surface of the temperature sensor circuit is coated with copper, so that the surface of the temperature sensor circuit is formed with a copper-coated isolating layer 300, and the copper-coated isolating layer 300 can further shield the electromagnetic interference generated by the tributary driving circuit 400.
In some embodiments, a copper-clad partition structure is disposed between the temperature sensor circuit and the ac driving circuit 500, and the copper-clad partition structure is located between the temperature sensor circuit and the ac driving circuit 500, so that the electromagnetic interference generated by the tributary driving circuit 400 is firstly shielded by the temperature sensor and then secondarily shielded by the copper-clad partition structure, two layers of shielding are disposed between the tributary driving circuit 400 and the ac driving circuit 500, and the electromagnetic interference generated by the tributary driving circuit 400 is shielded in multiple stages, thereby reducing the electromagnetic interference coupled to the ac circuit.
Example two:
fig. 1 shows a schematic diagram of a drive control circuit board according to another embodiment of the present invention.
As shown in fig. 1, according to the drive control circuit of the embodiment of the present invention, the ac drive circuit 500 includes: the two input terminals and the fuse assembly 540 are specifically characterized as follows:
two input terminals are provided on the substrate 100 for receiving a power supply signal.
The connection line between the two terminals of the fuse block 540 is disposed in parallel with the connection line between the two input terminals.
One of the power supply signals is connected to the first terminal of the fuse block 540 through the first wiring layer of the substrate 100.
The other power supply signal is connected to the first end of the first filter component 520 through the second wiring layer of the substrate 100, wherein an insulating layer is disposed between the first wiring layer and the second wiring layer.
In the technical scheme, a connecting line between two terminals of the safety component 540 and a connecting line between two input terminals are placed in parallel, and the input terminals, the safety component 540 and the first filtering component 520 are arranged according to the above manner, and a power supply signal is accessed in a form similar to a twisted pair, so that the enclosed area between a power supply line and the safety component 540 is reduced, the electromagnetic interference of the driving control circuit board on external electrical appliances is reduced, meanwhile, the electromagnetic interference between electronic elements on the circuit board is also reduced, and the driving control circuit board can be simply referred to as the circuit board in the context.
Specifically, the two paths of power supply signal routing are in different routing layers, that is, one path of power supply signal is connected to the first end of the safety component 540 from the first routing layer of the substrate 100, the other path of power supply signal is connected to the first end of the first filter component 520 from the second routing layer of the substrate 100, an insulating layer is arranged between the first routing layer and the second routing layer, and is isolated from the wires of other power supply signals and the safety component 540 through the insulating layer, and the routing mode of the two paths of power supply signal routing and the freshness protection component is similar to a twisted pair, so that on one hand, the enclosed area between the input terminal and the safety component 540 is minimum, on the other hand, interference signals generated by coupling between the power supply signal routing and the safety component 540 routing can be mutually cancelled, and interference signals of the input terminal accessing the power supply signal to other elements and external electrical appliances on the circuit board are, the interference of other elements on the circuit board to power supply signals and a power grid system can be obviously reduced, and the reliability and the anti-interference capability of the drive control circuit board are improved.
Wherein, the power supply signal can be power frequency alternating current signal, and input terminal unit 510 includes that a live wire terminal inserts the live wire signal, and another zero line terminal inserts the zero line signal, still sets up an input terminal in addition and inserts the ground wire signal, ground terminal 512 promptly.
In any of the above technical solutions, the driving control circuit board further includes a first filtering component 520.
The second terminal of the fuse assembly 540 is connected to the second terminal of the first filter assembly 520 by the first wiring layer, for filtering the electromagnetic interference signal passing through the fuse assembly 540.
In this technical solution, the second end of the safety component 540 is connected to the second end of the first filtering component 520 through the first wiring layer, and the electromagnetic interference signal flowing through the safety component 540 is filtered by the first filtering component 520, so as to further reduce the electromagnetic interference signal on the circuit board, and improve the MC (ctro magnetic compatibility) performance of the circuit board.
In any of the above solutions, the connection line between the two terminals of the first filtering component 520 and the connection line between the two terminals of the fuse component 540 are disposed in parallel.
Wherein, the first end of the first filter component 520 is disposed near the second end of the insurance component 540, and the second end of the first filter component 520 is disposed near the first end of the insurance component 540.
In this technical scheme, the first end of the first filter component 520 is close to the second end of the safety component 540, and the second end of the first filter component 520 is close to the first end of the safety component 540, so as to keep the connection between the two terminals of the first filter component 520 and the connection between the two terminals of the safety component 540 in a parallel or nearly parallel state as much as possible, so as to reduce the enclosed area between the first filter component 520 and the safety component 540 as much as possible, and reduce the coupling effect on the electromagnetic interference.
In any of the above solutions, the driving control circuit board further includes a common mode inductor component 530.
The common mode inductance assembly 530 includes a first inductance coil 532 and a second inductance coil 534 in a common mode, and an inductance wiring direction of the common mode inductance assembly 530 is perpendicular to a connection line between two input terminals of the first filter assembly 520.
In this embodiment, the common mode inductance assembly 530 includes two inductance coils respectively corresponding to two power supply signals, the wiring direction of the inductance coils is perpendicular to the connection line between the two terminals of the first filter assembly 520, so as to reduce the enclosed area between the inductance coils and the filter assembly as much as possible, and the interference signal generated by the inductance coils and the interference signal generated by the first filter assembly 520 are generated.
In any of the above solutions, the first terminal of the first filtering component 520 is connected to the input terminal of the second inductance coil 534 by the second wiring layer.
In any of the above solutions, the second end of the first filtering component 520 is connected to the input end of the first inductance coil 532 by the first wiring layer.
In the technical scheme, the wiring position between the filter component and the common-mode inductance component 530 is determined according to the current flowing direction, the two wiring terminals of the first filter component 520 are respectively positioned in different wiring layers of the circuit board, and the wires positioned in the different wiring layers can be overlapped and also can be arranged in parallel, so that the loop area between the wires is reduced as much as possible, the coupling of electromagnetic interference to the outside is reduced, and the MC performance of the circuit is improved.
In any of the above technical solutions, the driving control circuit board further includes a relay 550 and a zener diode 570.
The first inductor 532 is connected to a first terminal of the relay 550 by a first wiring layer, an output terminal of the relay 550 is connected to a first terminal of the zener diode 570, and the second inductor 534 is connected to a second terminal of the zener diode 570 by a second wiring layer, wherein an output terminal of the relay 550 is connected to a bus line of a load, and a power supply signal is an alternating current signal. A first terminal and a second terminal of the zener diode 570 are connected to the output terminal of the relay 550 and the input terminal of the rectifier 560, respectively; a rectifier 560, the output of the rectifier 560 in turn being connected to the electrolytic capacitor and the ac load, the rectifier 560 being configured to convert the ac signal to a dc signal, the buss lines being configured to carry the dc signal.
In the technical scheme, a first end of a relay 550 is connected with a first inductance coil 532 through a first wiring layer, an output end of the relay 550 is connected to a first end of a voltage stabilizing diode 570, a first end of the voltage stabilizing diode 570 is connected to an output end of the relay 550, an output end of the relay 550 is connected to an input end of a rectifier 560, a second end of an output end of the rectifier 560 is connected with a second inductance coil 534 through a second wiring layer, and two inductance coils of a common mode inductance component 530 are connected with the relay 550 and the rectifier 560 through different wiring layers, so that the wiring lines are kept parallel to each other as much as possible, the loop area is reduced, the coupling effect of a circuit on electromagnetic interference signals is reduced, and the.
The relay 550 is usually connected in parallel with a temperature sensitive resistor, which is usually a positive temperature coefficient temperature sensitive resistor or a negative temperature coefficient temperature sensitive resistor.
In any one of the above technical solutions, the driving control circuit board further includes: the supply signal is an ac signal, the rectifier 560 is configured to convert the ac signal to a dc signal, and the buss lines are configured to carry the dc signal.
In any one of the above technical solutions, the driving control circuit board further includes: a second filtering element 580, a second end of the fuse element 540 is connected to a first end of the second filtering element 580 via the second wiring layer, and a second end of the second filtering element 580 is connected to the ground terminal 512.
In the technical scheme, the routing between the second filter component 580 and the safety component 540 and the routing between the first filter component 520 and the safety component 540 are distributed in different routing layers, on one hand, the total area of a loop formed by the routing is reduced, on the other hand, the routing in different routing layers can be distributed in a manner similar to a twisted pair, interference signals generated by coupling are mutually offset, and the MC performance of the circuit is improved.
In any one of the above technical solutions, the driving control circuit board further includes: a third filter element 590, wherein the second end of the first filter element 520 is connected to the first end of the third filter element 590 through the second wiring layer, and the second end of the third filter element 590 is connected to the ground terminal 512.
In this technical solution, the second end of the first filtering component 520 is connected to the third filtering component 590 from the second wiring layer, and the wiring of the first filtering component 520 on the first wiring layer and the wiring of the first filtering component 520 on the second wiring layer are arranged in a manner similar to a twisted pair, so as to cancel out interference signals generated by coupling, thereby improving the MC performance of the circuit.
In addition, the drive control circuit board further includes: the specific connection relation and the working principle of the fourth filtering component, the fifth filtering component, the sixth filtering component and the electrolytic capacitor are as follows:
(1) the fourth filtering component is connected across the output end of the common mode inductance component 530, and is used for filtering the electrical signal output by the common mode inductance component 530.
(2) The fifth filtering component and the sixth filtering component are connected in series and connected between the fourth filtering component and the rectifier 560.
(3) And the electrolytic capacitor carries out filtering processing on the rectified bus signal.
The filter assembly comprises a filter capacitor and/or a plurality of filter capacitors connected in series and/or in parallel.
In summary, the reason why the traces of the fuse assembly 540 need to minimize the interference caused by coupling other circuit traces is that the fuse assembly 540 is between the filter capacitor and the input terminal, i.e. if the circuit near the fuse assembly 540 is coupled to the interference signal, there is no MC filtering measure to filter the interference signal, and the interference signal will flow to the outside of the product through the power line to form electromagnetic interference.
As shown in FIG. 2, the fuse assembly 540 is not placed by the layout scheme of the present invention, the residual amount of the disturbance voltage at 10MHz is only 2dB, and a disturbance power test of 300MHz to 1000MHz needs to be additionally tested.
As shown in FIG. 3, the arrangement scheme of the present invention is adopted to arrange the fuse assembly 540, and the disturbance voltage reaches 13dB at 10 MHz.
As shown in fig. 4, an air conditioner 600 according to an embodiment of the present invention includes: the drive control circuit board defined in any one of the above technical solutions; and a motor load 620 connected to the driving control circuit board, the driving control circuit board being configured to control the operation of the motor load 620.
The technical scheme of the invention is explained in detail by combining the attached drawings, and the invention provides a driving control circuit board and an air conditioner.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A drive control circuit board, comprising:
the driving circuit comprises a substrate, wherein a direct current driving circuit and an alternating current driving circuit are arranged on the substrate;
a static circuit disposed on the substrate, the static circuit disposed between the AC driving circuit and the DC driving circuit to isolate the AC driving circuit from the DC driving circuit,
wherein the DC driving circuit is configured to drive the DC load to operate, and the AC driving circuit is configured to drive the AC load to operate.
2. The drive control circuit board according to claim 1,
the static circuit is a temperature sensor circuit, a copper-clad isolation layer is arranged on the surface of the static circuit, and/or a copper-clad partition structure is arranged between the temperature sensor circuit and the alternating current drive circuit.
3. The drive control circuit board according to claim 1, wherein the alternating current drive circuit comprises:
the two input terminals are arranged on the substrate and used for accessing power supply signals;
a connecting line between two terminals of the fuse component and a connecting line between two input terminals are arranged in parallel, one path of the power supply signal is connected to the first end of the fuse component through a first wiring layer of the substrate, the other path of the power supply signal is connected to the first end of a first filtering component through a second wiring layer of the substrate,
wherein an insulating layer is arranged between the first wiring layer and the second wiring layer.
4. The drive control circuit board according to claim 3, wherein the alternating current drive circuit further comprises:
and the second end of the insurance component is connected to the second end of the first filtering component through the first wiring layer, and is used for filtering electromagnetic interference signals flowing through the insurance component.
5. The drive control circuit board according to claim 4,
a connecting line between the two terminals of the first filter component and a connecting line between the two terminals of the fuse component are arranged in parallel,
the first end of the first filtering component is arranged close to the second end of the insurance component, and the second end of the first filtering component is arranged close to the first end of the insurance component.
6. The drive control circuit board according to claim 5, wherein the alternating current drive circuit further comprises:
the common-mode inductance assembly comprises a first inductance coil and a second inductance coil which are in a common mode, and the inductance wiring direction of the common-mode inductance assembly is perpendicular to a connecting line between two input terminals of the first filtering assembly.
7. The drive control circuit board according to claim 6,
the first end of the first filtering assembly is connected to the input end of the second inductance coil through the second wiring layer, and the second end of the first filtering assembly is connected to the input end of the first inductance coil through the first wiring layer.
8. The drive control circuit board according to claim 7, wherein the alternating current drive circuit further comprises:
a relay, the first inductor being connected to a first end of the relay by the first wiring layer, an output end of the relay being connected to a first end of a zener diode, the second inductor being connected to a second end of the zener diode by the second wiring layer,
the output end of the relay is connected to a bus line of a load, and the power supply signal is an alternating current signal.
9. The drive control circuit board according to claim 8, wherein the ac drive circuit further comprises:
the first end and the second end of the voltage stabilizing diode are respectively connected to the input end of the rectifier;
a rectifier having an output connected to the electrolytic capacitor and the AC load in turn, the rectifier configured to convert the AC signal to a DC signal, the buss line configured to carry the DC signal.
10. The drive control circuit board according to any one of claims 1 to 9, wherein the alternating current drive circuit further comprises:
a second filter assembly, a second end of the fuse assembly being connected to a first end of the second filter assembly via the second wiring layer, a second end of the second filter assembly being connected to a ground terminal.
11. The drive control circuit board according to any one of claims 1 to 9, wherein the alternating current drive circuit further comprises:
a third filter assembly, a second end of the first filter assembly being connected to a first end of the third filter assembly via the second wiring layer, a second end of the third filter assembly being connected to a ground terminal.
12. An air conditioner, comprising:
the drive control circuit board according to any one of claims 1 to 9;
a motor load connected to the drive control circuit board, the drive control circuit board configured to control operation of the motor load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911054963.9A CN110753440B (en) | 2019-10-31 | 2019-10-31 | Drive control circuit board and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911054963.9A CN110753440B (en) | 2019-10-31 | 2019-10-31 | Drive control circuit board and air conditioner |
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| CN110753440A true CN110753440A (en) | 2020-02-04 |
| CN110753440B CN110753440B (en) | 2021-12-14 |
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| CN111313685A (en) * | 2020-03-25 | 2020-06-19 | 广州华凌制冷设备有限公司 | Drive control module and vehicle-mounted air conditioner |
| CN111313658A (en) * | 2020-03-25 | 2020-06-19 | 广州华凌制冷设备有限公司 | Drive control module and vehicle-mounted air conditioner |
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| Publication number | Publication date |
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| CN110753440B (en) | 2021-12-14 |
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