CN113193770B - Power supply device, power adapter, and power supply device control method - Google Patents
Power supply device, power adapter, and power supply device control method Download PDFInfo
- Publication number
- CN113193770B CN113193770B CN202110499648.8A CN202110499648A CN113193770B CN 113193770 B CN113193770 B CN 113193770B CN 202110499648 A CN202110499648 A CN 202110499648A CN 113193770 B CN113193770 B CN 113193770B
- Authority
- CN
- China
- Prior art keywords
- switching tube
- power supply
- primary winding
- alternating current
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
Abstract
The application discloses a power supply device, a power adapter and a power supply device control method, and belongs to the technical field of charging. The power supply device comprises a transformer, a rectification chopper circuit and a control circuit; the transformer comprises a first primary winding and a second primary winding, the first primary winding is connected with a first end of the alternating current power supply, and the second primary winding is connected with a second end of the alternating current power supply; the rectification chopper circuit comprises four bridge-connected switching tubes, and the first primary winding and the second primary winding are both connected with the rectification chopper circuit; and the control circuit is used for controlling the short circuit of the first primary winding or the second primary winding, the conduction of a first part of switching tubes of the rectifying and chopping circuit, the turn-off of a second part of switching tubes in the rectifying and chopping circuit and the switching of a third part of switching tubes in the rectifying and chopping circuit between a turn-off state and a turn-on state according to the electric energy output direction of the alternating current power supply. The technical scheme provided by the embodiment of the application can reduce the circuit complexity on the premise of ensuring the output power.
Description
Technical Field
The present disclosure relates to the field of charging technologies, and in particular, to a power supply device, a power adapter, and a power supply device control method.
Background
A power adapter is a device capable of providing electric energy for an electronic device, and generally, the power adapter needs to perform functions such as rectification and chopping.
In the related art, the power adapter may be implemented by using a QF (quasi resonant flyback), an ACF (active clamp flyback), an LLC (inductor-capacitor), or other architectures.
However, the output power of the QF and ACF architectures is low, while the output power of the LLC architecture is high, the circuit complexity is high, and currently, how to reduce the circuit complexity and then reduce the cost on the premise of ensuring the output power has become a research hotspot in the field of power adapters.
Disclosure of Invention
Accordingly, embodiments of the present application provide a power supply device, a power adapter, and a power supply device control method, which can reduce circuit complexity on the premise of ensuring output power.
In a first aspect, a power supply device is provided, which includes a transformer, a rectifying chopper circuit, and a control circuit;
the transformer comprises a first primary winding and a second primary winding, wherein the first primary winding is connected with a first end of an alternating current power supply, and the second primary winding is connected with a second end of the alternating current power supply; the rectification chopper circuit comprises four bridge-connected switching tubes, and the first primary winding and the second primary winding are both connected with the rectification chopper circuit; the control circuit is used for controlling the short circuit of the first primary winding or the second primary winding, the conduction of a first part of switching tubes of the rectifying and chopping circuit and the disconnection of a second part of switching tubes of the rectifying and chopping circuit according to the electric energy output direction of the alternating current power supply so as to rectify the alternating current output by the alternating current power supply; the control circuit is further used for controlling a third part of switching tubes in the rectification chopper circuit to be switched between an off state and an on state so as to chop alternating current output by the alternating current power supply, wherein the first part of switching tubes, the second part of switching tubes and the third part of switching tubes are different switching tubes in four bridge-connected switching tubes.
In a second aspect, a power adapter is provided, wherein the power adapter includes the power supply device provided in the first aspect.
In a third aspect, there is provided a power supply device control method, used in the power supply device according to the first aspect, including:
according to the electric energy output direction of an alternating current power supply, a first primary winding or a second primary winding of a transformer in the power supply device is controlled to be in short circuit, a first part of switching tubes in the rectifying and chopping circuit are switched on, and a second part of switching tubes in the rectifying and chopping circuit are switched off, so that alternating current output by the alternating current power supply is rectified; and according to the electric energy output direction of the alternating current power supply, controlling a third part of switching tubes in the rectifying and chopping circuit to switch between an off state and an on state so as to chop the alternating current output by the alternating current power supply.
The beneficial effects that technical scheme that this application embodiment brought include at least:
the power supply device comprises a transformer, a rectifying and chopping circuit and a control circuit, wherein the transformer comprises a first primary winding and a second primary winding, the first primary winding is connected with a first end of an alternating current power supply, the second primary winding is connected with a second end of the alternating current power supply, the rectifying and chopping circuit comprises four bridged switching tubes, the first primary winding and the second primary winding are both connected with the rectifying and chopping circuit, the control circuit is used for controlling the first primary winding or the second primary winding to be short-circuited according to the power output direction of the alternating current power supply, a first part of switching tubes of the rectifying and chopping circuit are switched on and a second part of switching tubes of the rectifying and chopping circuit are switched off so as to rectify alternating current output by the alternating current power supply and control a third part of switching tubes of the rectifying and chopping circuit to be switched between an off state and an on state so as to conduct alternating current output by the alternating current power supply, and rectifying and chopping circuits of the power supply device can achieve rectifying and chopping functions of the power supply device without using rectifying and chopping diodes in the rectifying and chopping circuits, and switching modules of the rectifying and chopping circuits, and the rectifying and chopping circuits can achieve high rectifying and chopping functions of the rectifying and switching modules of the rectifying and chopping circuits, and switching modules, and the PFC converter, and the power conversion modules can be capable of improving the power conversion efficiency of the rectifying and the power conversion of the rectifier.
Drawings
Fig. 1 is a schematic diagram of a power supply apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a power supply apparatus according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a power supply apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of an equivalent circuit of a power supply apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of an equivalent circuit of a power supply apparatus according to an embodiment of the present disclosure;
FIG. 6 is a block diagram of a power adapter provided in an embodiment of the present application;
fig. 7 is a flowchart of a control method of a power supply device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, the following detailed description of the embodiments of the present application will be made with reference to the accompanying drawings.
In the description of the embodiments of the present application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include one or more features.
In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" should be interpreted broadly, and may be, for example, electrically connected, fixedly connected, detachably connected, or integrally connected, directly connected, indirectly connected, connected through two elements or in an interaction relationship between the two elements, unless explicitly stated or limited otherwise, and the specific meanings of the terms in the embodiments of the present application will be understood by those skilled in the art according to specific situations.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the application. To simplify the description of the embodiments of the present application, only specific components and arrangements are described below, which are exemplary only and not intended to limit the scope of the present application.
Referring to fig. 1, an embodiment of the present application provides a power supply apparatus, which includes a transformer 101, where the transformer 101 includes a first primary winding L1 and a second primary winding L2, where the first primary winding L1 is connected to a first end of an ac power source, the second primary winding L2 is connected to a second end of the ac power source, and a secondary winding of the transformer 101 is not shown in fig. 1. The first end of the alternating current power supply and the second end of the alternating current power supply are two output ends with opposite polarities, wherein the output of the second end of the alternating current power supply is negative under the condition that the output of the first end of the alternating current power supply is positive, and the output of the first end of the alternating current power supply is negative under the condition that the output of the second end of the alternating current power supply is positive.
As shown in fig. 1, the power supply device further includes a rectifying and chopping circuit 102, wherein the rectifying and chopping circuit 102 is configured to implement rectifying and chopping functions, the rectifying and chopping circuit 102 includes 4 bridge-connected switching tubes, and both the first primary winding L1 and the second primary winding L2 of the transformer 101 are connected to the rectifying and chopping circuit 102.
As shown in fig. 1, the power supply device may further include a control circuit 103 besides the transformer 101 and the rectifying and chopping circuit 102, where the control circuit 103 is used to control the short circuit of the first primary winding L1 or the second primary winding L2 and to control the on/off of a switching tube in the rectifying and chopping circuit 102, so as to implement the rectifying and chopping functions.
Optionally, the control circuit 103 is configured to control, according to the electric energy output direction of the ac power supply, a short circuit of the first primary winding L1 or the second primary winding L2, conduction of a first part of switching tubes of the rectification chopper circuit 102, and turn off of a second part of switching tubes of the rectification chopper circuit 102, so as to rectify the ac power output by the ac power supply. The control circuit 103 is further configured to control a third portion of switching tubes in the rectification chopper circuit 102 to switch between an off state and an on state according to an electric energy output direction of the ac power source, so as to chop the ac power output by the ac power source, where the first portion of switching tubes, the second portion of switching tubes, and the third portion of switching tubes are different switching tubes among four bridge-connected switching tubes in the rectification chopper circuit 102.
In practical applications, the control circuit 103 may be implemented in the form of a control chip, and the embodiment of the present application does not limit the specific structure of the control circuit 103.
Referring to fig. 2, the rectifying and chopping circuit 102 includes four bridged first switching tubes K1, second switching tubes K2, third switching tubes K3, and fourth switching tubes K4, wherein both the first primary winding L1 and the second primary winding L2 in the transformer are connected to the rectifying and chopping circuit 102, and optionally, referring to fig. 2, the first primary winding L1 is connected to a bridge arm between the first switching tube K1 and the second switching tube K2, and the second primary winding L2 is connected to a bridge arm between the third switching tube K3 and the fourth switching tube K4.
It should be noted that, in the embodiment of the present application, the first switching tube K1, the second switching tube K2, the third switching tube K3, and the fourth switching tube K4 may be NMOS tubes, and the embodiment of the present application does not limit specific types of the first switching tube K1, the second switching tube K2, the third switching tube K3, and the fourth switching tube K4.
It should be noted that, in the case that the output of the first terminal of the ac power supply is positive, the above-mentioned first switching tube includes a second switching tube K2 and a third switching tube K3, the above-mentioned second switching tube includes a first switching tube K1, and the above-mentioned third switching tube includes a fourth switching tube K4.
In the case that the output of the second terminal of the ac power supply is positive, the first switch transistor portion described above includes a first switch transistor K1 and a fourth switch transistor K4, the second switch transistor portion described above includes a second switch transistor K2, and the third switch transistor portion described above includes a third switch transistor K3.
As can be seen from the foregoing, in the Power supply device provided in the embodiment of the present application, the rectifying and chopping functions can be realized by the rectifying and chopping circuit including only four bridge-connected switching tubes, so that the circuit complexity is low, and in addition, since the rectifying and chopping functions are realized in the embodiment of the present application without using the conventional rectifying diodes and PFC (Power Factor Correction, chinese Power Factor Correction) modules, the Power loss is mainly concentrated on the switching tubes, and the Power loss of the rectifying diodes and the PFC modules is saved, so that the Power conversion efficiency of the primary side transformer can be improved, and a high output Power can be ensured
Hereinafter, the embodiments of the present application will describe specific implementations and principles of the rectification function and the chopping function in the power supply device.
Referring to fig. 2, as shown in fig. 2, a first pole of the first switch tube K1 is connected to a first pole of the second switch tube K2, a second pole of the second switch tube K2 is connected to a first pole of the fourth switch tube K4, a second pole of the fourth switch tube K4 is connected to a first pole of the third switch tube K3, and a second pole of the third switch tube K3 is connected to a second pole of the first switch tube K1.
In addition, the first primary winding L1 is connected to a first pole of the first switching tube K1 and a first pole of the second switching tube K2, respectively, and the second primary winding L2 is connected to a first pole of the third switching tube K3 and a second pole of the fourth switching tube K4, respectively.
Referring to fig. 3, in an alternative embodiment of the present application, the power supply device may further include a fifth switching tube K5 and a sixth switching tube K6, wherein the fifth switching tube K5 is connected in parallel with the first primary winding L1, and the sixth switching tube K6 is connected in parallel with the second primary winding L2.
It should be noted that the fifth switching tube K5 and the sixth switching tube K6 in the embodiment of the present application may be NMOS tubes, and the embodiment of the present application does not limit the specific types of the fifth switching tube K5 and the sixth switching tube K6.
In this embodiment, the control circuit 103 can control the short circuit of the first primary winding L1 or the second primary winding L2 by controlling the on/off of the fifth switching tube K5 and the sixth switching tube K6. Under the condition that the control circuit 103 controls the fifth switching tube K5 to be switched on and the sixth switching tube K6 to be switched off, the first primary winding L1 is short-circuited, the second primary winding L2 can be normally connected in series into the circuit to work, and under the condition that the control circuit 103 controls the sixth switching tube K6 to be switched on and the fifth switching tube K5 to be switched off, the second primary winding L2 is short-circuited, and the first primary winding L1 can be normally connected in series into the circuit to work.
In other words, in the embodiment of the present application, the control circuit 103 is specifically configured to control the fifth switching tube K5 or the sixth switching tube to be turned on K6 according to the power output direction of the ac power source, so as to control the short circuit of the first primary winding L1 or the second primary winding L2.
In an optional embodiment of the present application, the control circuit 103 is specifically configured to, when the output of the first end of the ac power supply is positive, that is, when the input of the first primary winding L1 is positive, control the first switching tube K1 (that is, the second part of the switching tubes above) to be turned off, and control the second switching tube K2 and the third switching tube K3 (that is, the first part of the switching tubes above) to be turned on, and besides, the control circuit 103 may also control the sixth switching tube K6 to be turned on and control the fifth switching tube K5 to be turned off when the output of the first end of the ac power supply is positive, that is, when the input of the first primary winding L1 is positive, so that the second primary winding L2 may be short-circuited, and the first primary winding L1 is connected in series to the circuit to normally operate, so as to implement the rectification function. Meanwhile, the control circuit 103 is further configured to control the fourth switching tube K4 (i.e., the above third switching tube) to switch between an off state and an on state when the output of the first end of the ac power supply is positive, that is, when the input of the first primary winding L1 is positive, so as to implement a chopping function.
Referring to fig. 4, it is an equivalent circuit diagram of the power supply apparatus when the output of the first end of the ac power supply is positive, that is, when the input of the first primary winding L1 is positive, as shown in fig. 4, when the input of the first primary winding L1 is positive, the current may sequentially flow through the first primary winding L1 and the fourth switching tube K4, and the current direction is from the end of the first primary winding L1 connected to the ac power supply to the end connected to the rectification chopper circuit.
In general, for all types of chopper circuits, the output waveform can be controlled by periodically turning on and off switches in the circuit, in this embodiment, when the fourth switching tube K4 is turned on, the voltage of the first primary winding L1 is consistent with the voltage of the ac power supply, when the fourth switching tube K4 is turned off, the voltage of the first primary winding L1 is decreased to 0, when the fourth switching tube K4 is turned on, the current of the first primary winding L1 is increased to the maximum value, and when the fourth switching tube K4 is turned off, the current of the first primary winding L1 is attenuated to the minimum value.
In some other cases, in the optional embodiment of the present application, the control circuit 103 may further control the first switching tube K1 to be turned off, the fourth switching tube K4 and the third switching tube K3 to be turned on, so as to implement a rectification function, and control the second switching tube K2 to be switched between an off state and an on state, so as to implement a chopping function, when the output of the first end of the ac power supply is positive, that is, when the input of the first primary winding L1 is positive.
In some cases, the control circuit 103 may also control the first switching tube K1 to be turned off, the fourth switching tube K4 to be turned on, and the second switching tube K2 to be turned on when the output of the first end of the ac power supply is positive, that is, when the input of the first primary winding L1 is positive, to implement the rectification function, and control the third switching tube K3 to be switched between the off state and the on state, so as to implement the chopping function.
Under the two situations, the implementation manner of rectification and chopping is the same as the situation that the first switching tube K1 is turned off, the second switching tube K2 and the third switching tube K3 are turned on, and the fourth switching tube K4 is switched between the turned-off state and the turned-on state, which is not repeated herein in the embodiment of the present application.
In another optional embodiment of the present application, the control circuit 103 may further control the second switching tube K2 (i.e., the second part of the switching tubes above) to be turned off, and the first switching tube K1 and the fourth switching tube K4 (i.e., the first part of the switching tubes above) to be turned on when the output of the second end of the ac power supply is positive, in addition to which the control circuit 103 may also control the fifth switching tube K5 to be turned on and the sixth switching tube K6 to be turned off when the output of the second end of the ac power supply is positive, that is, when the input of the second end of the ac power supply is positive, so that the first primary winding L1 may be short-circuited, and the second primary winding L2 may be connected in series to the circuit to normally operate, so as to implement the rectification function, and control the third switching tube K3 (i.e., the third part of the switching tubes above) to switch between the off state and the on state, so as to implement the rectification function.
Referring to fig. 5, which is an equivalent circuit diagram of the power supply apparatus when the output of the second end of the ac power supply is positive, that is, when the input of the second primary winding L2 is positive, as shown in fig. 5, when the input of the second primary winding L1 is positive, the current may sequentially flow through the second primary winding L2 and the third switching tube K3, and the current direction is from the end of the second primary winding L2 connected to the ac power supply to the end connected to the rectifying and chopping circuit.
As can be seen from fig. 4 and 5, when the output of the first end of the ac power supply is positive and the output of the second end of the ac power supply is positive, the current directions of the first primary winding L1 and the second primary winding L2 are the same, and thus, the rectification function is realized.
In addition, when the chopping function is realized in the embodiment of the application, under the condition that the third switching tube K3 is turned on, the voltage of the second primary winding L2 is consistent with the voltage of the alternating-current power supply, under the condition that the third switching tube K3 is turned off, the voltage of the second primary winding L2 is reduced to 0, under the condition that the third switching tube K3 is turned on, the current of the second primary winding L2 is increased to the maximum value, and under the condition that the third switching tube K3 is turned off, the current of the second primary group L2 is attenuated and reduced to the minimum value.
In some other cases, in the optional embodiment of the present application, the control circuit 103 may further control the second switching tube K2, the fourth switching tube K4 to be turned off, and the first switching tube K1 to be turned on when the output of the second end of the ac power supply is positive, that is, when the input of the second primary winding L2 is positive, so as to implement the rectification function, and control the third switching tube K3 to be switched between the off state and the on state, so as to implement the chopping function.
In some cases, the control circuit 103 may also control the second switching tube K2, the fourth switching tube K4 to be turned off, and the third switching tube K3 to be turned on when the output of the second end of the ac power supply is positive, that is, when the input of the second primary winding L2 is positive, to implement the rectification function, and control the first switching tube K1 to be switched between the off state and the on state, so as to implement the chopping function.
Under the two situations, the implementation manner of rectification and chopping is the same as the case of turning off the second switching tube K2, turning on the first switching tube K1 and the fourth switching tube K4, and controlling the third switching tube K3 to switch between the off state and the on state, and this embodiment of the present application is not described herein again.
It should be noted that, in the embodiment of the present application, each switching tube included in the rectifying and chopping circuit may be a GaN switching tube, and since the GaN switching tube has a smaller volume, the volume of the whole power supply device may be reduced by using the GaN switching tube.
Optionally, in the embodiment of the present application, in order to reduce the size of the power supply device, the fifth switching tube K5 and the sixth switching tube K6 may also be implemented by GaN switching tubes.
An embodiment of the present application further provides a power adapter, where the power adapter may provide power for an electronic device such as a smart phone, a tablet computer, a notebook computer, and a wearable device, please refer to fig. 6, and the power adapter may include the power supply device 601, the charging interface 602, the filter circuit 603, the main control circuit 604, and the current-voltage detection circuit 605 shown in any one of fig. 1 to fig. 3.
The power supply apparatus 601 is used to implement core functions of the power adapter, that is, functions of transforming, rectifying, and chopping.
The charging interface 602 can be connected to a charging interface of an electronic device, and can enable a power adapter to provide power to the electronic device through the charging interface 602 and communicate with the electronic device during charging.
The filter circuit 603 is configured to filter the ac power input by the power adapter, and output the filtered ac power to the power supply apparatus 601.
The current and voltage detection circuit 605 is configured to detect a current and a voltage output by the power adapter, and transmit the detected current and voltage to the main control circuit 604.
The main control circuit 604 is configured to receive the current and the voltage detected by the current and voltage detection circuit 605, and send the received current and voltage to the electronic device through the charging interface 602.
The main control circuit 604 is further configured to receive charging control information sent by the electronic device through the charging interface 602, and correspondingly control the current and the voltage output by the power supply apparatus 601 according to the charging control information.
An embodiment of the present application further provides a power supply device control method, which can be applied to the power supply devices described in the foregoing embodiments, and referring to fig. 7, the power supply device control method includes the following steps:
and 701, controlling a first primary winding or a second primary winding of a transformer in the power supply device to be short-circuited according to the electric energy output direction of the alternating current power supply, and switching on a first part of switching tubes of the rectification chopper circuit and switching off a second part of switching tubes of the rectification chopper circuit so as to rectify the alternating current output by the alternating current power supply.
Step 702, according to the electric energy output direction of the alternating current power supply, controlling a third part of switching tubes in the rectifying and chopping circuit to switch between an off state and an on state so as to chop the alternating current output by the alternating current power supply.
As described above, when the output of the first end of the ac power supply is positive, that is, when the input of the first primary winding is positive, the second primary winding can be controlled to be short-circuited and the first primary winding operates normally in series, and when the output of the second end of the ac power supply is positive, that is, when the input of the second primary winding is positive, the first primary winding can be controlled to be short-circuited and the second primary winding operates normally in series.
It should be noted that, in the embodiment of the present application, the short circuit of the first primary winding may be controlled by controlling the conduction of the fifth switching tube connected in parallel to the first primary winding, and the short circuit of the second primary winding may be controlled by controlling the conduction of the sixth switching tube connected in parallel to the second primary winding.
As described above, in the case where the output of the first terminal of the ac power supply is positive, that is, in the case where the input of the first primary winding is positive, the first switching tube, the second switching tube, and the third switching tube in the rectifier chopper circuit may be controlled to be turned off, and the fourth switching tube may be controlled to be switched between the off state and the on state.
Under the condition that the output of the second end of the alternating current power supply is positive, namely, under the condition that the input of the second primary winding is positive, the second switching tube can be controlled to be turned off, the first switching tube and the fourth switching tube can be controlled to be turned on, and the third switching tube is controlled to be switched between the turned-off state and the turned-on state.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A power supply device is characterized by comprising a transformer, a rectification chopper circuit and a control circuit;
the transformer comprises a first primary winding and a second primary winding, the first primary winding is connected with a first end of an alternating current power supply, and the second primary winding is connected with a second end of the alternating current power supply;
the rectification chopper circuit comprises four bridge-connected switching tubes, and the first primary winding and the second primary winding are both connected with the rectification chopper circuit;
the control circuit is used for controlling the short circuit of the first primary winding or the second primary winding, the conduction of a first part of switching tubes of the rectification chopper circuit and the disconnection of a second part of switching tubes of the rectification chopper circuit according to the electric energy output direction of the alternating current power supply so as to rectify the alternating current output by the alternating current power supply;
the control circuit is further configured to control a third part of switching tubes in the rectification chopper circuit to switch between an off state and an on state according to an electric energy output direction of the ac power supply, so as to chop the ac power output by the ac power supply, where the first part of switching tubes, the second part of switching tubes, and the third part of switching tubes are different switching tubes among the four bridging switching tubes;
the rectifying and chopping circuit comprises a first switching tube, a second switching tube, a third switching tube and a fourth switching tube, wherein a first primary winding is connected with a bridge arm between the first switching tube and the second switching tube, and a second primary winding is connected with a bridge arm between the third switching tube and the fourth switching tube;
under the condition that the output of the first end of the alternating current power supply is positive, the first partial switching tube comprises the second switching tube and the third switching tube, the second partial switching tube comprises the first switching tube, and the third partial switching tube comprises the fourth switching tube;
when the output of the second end of the alternating current power supply is positive, the first partial switching tube comprises the first switching tube and the fourth switching tube, the second partial switching tube comprises the second switching tube, and the third partial switching tube comprises the third switching tube.
2. The power supply device according to claim 1, wherein the control circuit is configured to control the first switching tube to be turned off, and the second switching tube and the third switching tube to be turned on, so as to rectify the alternating current output by the alternating current power supply, when the output of the first terminal of the alternating current power supply is positive;
the control circuit is further configured to control the fourth switching tube to switch between an off state and an on state when the output of the first end of the ac power supply is positive, so as to chop the ac power output by the ac power supply.
3. The power supply device according to claim 1, wherein the control circuit is configured to control the second switching tube to be turned off, and the first switching tube and the fourth switching tube to be turned on to rectify the alternating current output by the alternating current power supply when the output of the second terminal of the alternating current power supply is positive;
the control circuit is further configured to control the third switching tube to switch between an off state and an on state when the output of the second end of the ac power supply is positive, so as to chop the ac power output by the ac power supply.
4. The power supply device according to claim 1, further comprising a fifth switching tube and a sixth switching tube, wherein the fifth switching tube is connected in parallel with the first primary winding, and the sixth switching tube is connected in parallel with the second primary winding;
the control circuit is configured to control the fifth switching tube or the sixth switching tube to be turned on according to the electric energy output direction of the ac power supply, so as to control the first primary winding or the second primary winding to be short-circuited.
5. The power supply device according to claim 4, wherein the control circuit is configured to control the sixth switching tube to conduct to control the second primary winding to be short-circuited when the output of the first terminal of the ac power supply is positive.
6. The power supply device according to claim 4, wherein the control circuit is configured to control the fifth switching tube to be turned on to control the first primary winding to be short-circuited when the output of the second end of the ac power supply is positive.
7. A power adapter, characterized in that it comprises a power supply device according to any one of claims 1 to 6.
8. A power supply device control method used in the power supply device according to any one of claims 1 to 6, the method comprising:
according to the electric energy output direction of an alternating current power supply, a first primary winding or a second primary winding of a transformer in the power supply device is controlled to be short-circuited, a first part of switching tubes in the rectification chopper circuit are switched on, and a second part of switching tubes in the rectification chopper circuit are switched off, so that alternating current output by the alternating current power supply is rectified;
according to the electric energy output direction of the alternating current power supply, a third part of switching tubes in the rectification chopper circuit are controlled to be switched between an off state and an on state so as to chop the alternating current output by the alternating current power supply;
wherein, according to the electric energy output direction of alternating current power supply, control the first primary winding or the second primary winding short circuit of transformer in power supply unit, the first part switch tube of rectification chopper circuit switches on and the second part switch tube in the rectification chopper circuit switches off, include:
under the condition that the output of a first end of the alternating current power supply, which is connected with the first primary winding, is positive, a first switching tube in the rectification chopper circuit is controlled to be turned off, and a second switching tube and a third switching tube in the rectification chopper circuit are controlled to be turned on;
and under the condition that the output of a second end of the alternating current power supply, which is connected with the second primary winding, is positive, controlling the second switching tube in the rectification chopper circuit to be turned off, and controlling the first switching tube and the fourth switching tube in the rectification chopper circuit to be turned on, wherein the rectification chopper circuit comprises the first switching tube, the second switching tube, the third switching tube and the fourth switching tube, the first primary winding is connected with a bridge arm between the first switching tube and the second switching tube, and the second primary winding is connected with a bridge arm between the third switching tube and the fourth switching tube.
9. The method according to claim 8, wherein the controlling of the third part of switching tubes in the rectifying and chopping circuit to switch between the off state and the on state according to the power output direction of the alternating-current power source comprises:
under the condition that the output of the first end of the alternating current power supply is positive, controlling the fourth switching tube to be switched between an off state and an on state;
and under the condition that the output of the second end of the alternating current power supply is positive, controlling the third switching tube to switch between an off state and an on state.
10. The method of claim 8, wherein the first primary winding is shorted by controlling a fifth switching tube in parallel with the first primary winding to conduct, and wherein the second primary winding is shorted by controlling a sixth switching tube in parallel with the second primary winding to conduct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499648.8A CN113193770B (en) | 2021-05-08 | 2021-05-08 | Power supply device, power adapter, and power supply device control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499648.8A CN113193770B (en) | 2021-05-08 | 2021-05-08 | Power supply device, power adapter, and power supply device control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113193770A CN113193770A (en) | 2021-07-30 |
| CN113193770B true CN113193770B (en) | 2022-12-13 |
Family
ID=76984377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110499648.8A Active CN113193770B (en) | 2021-05-08 | 2021-05-08 | Power supply device, power adapter, and power supply device control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113193770B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355423A (en) * | 2020-04-16 | 2020-06-30 | 广东美的制冷设备有限公司 | Drive control circuit, drive control method, circuit board and air conditioner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202602553U (en) * | 2012-05-10 | 2012-12-12 | 广州金升阳科技有限公司 | Switch power supply specially for electronic ballast |
| CN105122620B (en) * | 2013-04-12 | 2018-01-12 | 三菱电机株式会社 | Power inverter |
| WO2014176036A1 (en) * | 2013-04-24 | 2014-10-30 | The Esab Group, Inc. | Variable switching frequency power supply plasma cutters |
| JP6589046B6 (en) * | 2016-02-05 | 2019-12-11 | オッポ広東移動通信有限公司 | Adapter and charge control method |
| CN206506450U (en) * | 2017-02-22 | 2017-09-19 | 天津电气科学研究院有限公司 | A kind of single-phase AC DC boost conversion circuits |
-
2021
- 2021-05-08 CN CN202110499648.8A patent/CN113193770B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355423A (en) * | 2020-04-16 | 2020-06-30 | 广东美的制冷设备有限公司 | Drive control circuit, drive control method, circuit board and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113193770A (en) | 2021-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101015282B1 (en) | ??/?? converter | |
| US10063103B2 (en) | Contactless power transmission device and power transmission method thereof | |
| CN108631601B (en) | Multi-input converter | |
| CN109904913B (en) | Charging equipment and quick charging circuit thereof | |
| US20230198371A1 (en) | Power source providing apparatus, and charging method and system | |
| CN112803780B (en) | Converter and power adapter | |
| CN112072766A (en) | Charging device | |
| CN116615860A (en) | Resonant alternating current/direct current converter, electronic equipment and adapter | |
| CN110380619B (en) | Direct current conversion circuit, control method thereof and direct current conversion device | |
| US6519164B1 (en) | Single power stage AC/DC forward converter with power switch voltage clamping function | |
| CN103973138A (en) | Dynamic variable-frequency power conversion system | |
| WO2023231633A1 (en) | Driver circuit of valley-fill circuit, power supply module and electronic device | |
| CN113193770B (en) | Power supply device, power adapter, and power supply device control method | |
| CN104057181A (en) | Open-phase protection circuit for inverter welding machine | |
| CN203590560U (en) | LED drive circuit and LED lamp | |
| CN210075087U (en) | Direct current conversion circuit and direct current conversion device with high conversion efficiency | |
| US7095158B2 (en) | A/D converter with adjustable internal connection and method for the sameoperating | |
| CN115347793A (en) | Synchronous rectification control circuit and device | |
| CN212324007U (en) | Power adapter and electronic equipment | |
| CN203326884U (en) | Primary-side constant-current control quasi-single-stage high-power-factor circuit and device | |
| CN102545632A (en) | Driving circuit for switching power supply | |
| CN103687203B (en) | A kind of LED drive circuit and LED lamp | |
| CN214707264U (en) | Charging device | |
| CN217883244U (en) | Equipment power supply control circuit | |
| CN217063576U (en) | Isolated electric energy conversion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |