CN112671073A - Power adaptation circuit, controller, electric appliance device, power adaptation method and device - Google Patents
Power adaptation circuit, controller, electric appliance device, power adaptation method and device Download PDFInfo
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Abstract
The invention is suitable for the technical field of power adapters, and particularly provides a power adapting circuit, a controller, an electrical device, a power adapting method and a power adapting device. The control unit sequentially shifts the output power to the communication unit, the communication unit sequentially sends the output power to the adapter, after at least one adaptation signal fed back by the adapter is received, the adaptation signal is sent to the control unit, the output power shift which can be adapted to the adapter is recorded according to the adaptation signal, the adaptation output power shift is selected according to the charging requirement of the load end and sent to the adapter, and the output unit is controlled to be conducted, so that the adapter outputs the output power corresponding to the adaptation output power shift to the load end. The invention realizes the mutual adaptation of the adapter and the load end and improves the charging efficiency of the load end.
Description
Technical Field
The invention belongs to the technical field of power adapters, and particularly relates to a power adaptation circuit, a controller, an electrical device, a power adaptation method and a power adaptation device.
Background
The Power adapter (Power adapter) is the Power supply conversion equipment of small-size portable electronic equipment and electronic apparatus, and the Power adapter among the prior art, in order to realize fast filling, flash charging, improve transmission speed, generally dispose various types Type-C interface, Type-C interface connection equipment exports voltage such as 5V/9V/12V/15V/20V, and output current is from a few amperes of zero to 3 amperes inequality. However, the existing specific load terminal (for example, a smart curtain) is not equipped with a specific Type-C adapter when being shipped from a factory, an end user only uses the Type-C adapter of the end user, and a general Type-C power adapter can output voltages of a plurality of power levels, but cannot output all power level voltages, and the specific load terminal cannot identify a power parameter of the randomly allocated Type-C adapter, so that appropriate power cannot be provided, and charging efficiency of the specific load terminal is low.
In summary, how to implement the adaptation between the Type-C interface and the specific load end to provide a suitable power for the specific load end through the Type-C interface of the power adapter, so as to improve the charging efficiency of the specific load end, is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a power adaptation circuit, a controller, an electrical device, a power adaptation method and a power adaptation device, which are used for realizing the adaptation of an interface and a specific load end so as to provide proper power for the specific load end through the interface of a power adapter and improve the charging efficiency of the specific load end.
The invention is realized in such a way that a power adaptation circuit comprises a communication unit, an output unit and a control unit, wherein the control unit stores a message comprising a plurality of output power gears;
the control unit sends the output power gear to the communication unit in sequence, the communication unit sends the output power gear to the adapter in sequence, after at least one adaptation signal fed back by the adapter is received, the adaptation signal is sent to the control unit, the control unit records the output power gear which can be adapted by the adapter according to the adaptation signal, then selects an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, sends the adaptation output power gear to the adapter through the communication unit, and controls the output unit to be conducted, so that the adapter outputs the output power corresponding to the adaptation output power gear to the load end.
Furthermore, the output unit comprises a first output module and a second output module,
the first output module is respectively connected with the communication unit and the adapter and used for receiving the output power output by the adapter and corresponding to the adaptive output power gear and transmitting the output power to the load end;
the second output module is respectively connected with the control unit and the adapter, and is used for receiving the default output power output by the adapter when receiving the charging signal, transmitting the default output power to the load end, and stopping when receiving the charging prohibition signal, and not transmitting the default output power to the load end.
Further, the first output module comprises a first field effect transistor, a second field effect transistor, a first resistor and a second resistor, the drain electrode of the first field effect transistor is connected with the input end of the adapter and one end of the first resistor respectively, the source electrode of the first field effect transistor is connected with the source electrode of the second field effect transistor, the grid electrode of the first field effect transistor is connected with the other end of the first resistor, the grid electrode of the second field effect transistor and one end of the second resistor respectively, the drain electrode of the second field effect transistor is connected with the output end of the adapter, and the other end of the second resistor is connected with the communication unit.
Furthermore, the second output module comprises a third field effect transistor, a fourth field effect transistor, a fifth field effect transistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor, wherein the drain electrode of the third field effect transistor is respectively connected with the input end of the adapter and one end of the third resistor, the source electrode of the third field effect transistor is connected with the source electrode of the fourth field effect transistor, the grid electrode of the third field effect transistor is respectively connected with the other end of the third resistor, the grid electrode of the fourth field effect transistor and one end of the fourth resistor, the drain electrode of the fourth field effect transistor is connected with the output end of the adapter, the other end of the fourth resistor is connected with the drain electrode of the fifth field effect transistor, the source electrode of the fifth field effect transistor is respectively connected with one end of the sixth resistor and the grounding end, the grid electrode of the fifth field effect transistor is respectively connected with one end of the fifth resistor and the other end of the sixth resistor, the other end of the fifth resistor is connected with the control unit.
Furthermore, the power adaptation circuit further comprises an interface unit and an insertion detection unit;
the interface unit is connected with the adapter and is used for butting the adapter;
the insertion detection unit is respectively connected with the control unit and the adapter and used for sending an insertion signal to the control unit when receiving the insertion signal sent by the adapter.
Furthermore, the insertion detection unit includes a sixth field effect transistor, a seventh resistor, an eighth resistor, and a ninth resistor, a drain of the sixth field effect transistor is connected to one end of the seventh resistor and the control unit, a source of the sixth field effect transistor is connected to one end of the ninth resistor and the ground terminal, a gate of the sixth field effect transistor is connected to the other end of the ninth resistor and one end of the eighth resistor, the other end of the seventh resistor is connected to a power source, and the other end of the eighth resistor is connected to the adapter.
The invention also provides a controller comprising the power adaptation circuit.
The invention also provides an electrical device which comprises the power adapting circuit.
The invention also provides a power adaptation method, which comprises the following steps:
sequentially sending output power gears in prestored messages to an adapter;
after at least one adaptation signal fed back by the adapter is received, recording the output power gear which can be adapted by the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter for adaptation;
and after the adaptation is finished, an output unit is turned on to transmit the output power of the adapter to the load end.
Further, after receiving at least one adaptation signal fed back by the adapter, recording an output power gear that can be adapted by the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears that can be adapted by the adapter according to a charging requirement of a load end, and sending the adaptation output power gear to the adapter specifically includes:
after the output power gears are all sent to the adapter, at least one adaptation signal fed back by the adapter is received, the output power gears which can be adapted to the adapter are recorded according to the adaptation signal, then the adaptation output power gears are selected from the output power gears which can be adapted to the adapter according to the charging requirement of a load end, and the adaptation output power gears are sent to the adapter.
Further, the step of sequentially sending the output power gear in the pre-stored message to the adapter specifically includes:
sequentially sending the output power gears in the prestored messages from high to low to an adapter;
after receiving at least one adaptation signal fed back by the adapter, recording output power gears which can be adapted by the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter, specifically comprising the steps of:
after receiving an adaptation signal fed back by the adapter and an adaptation signal fed back by the adapter, determining an output power gear matched with the adaptation signal as an adaptation output power gear capable of meeting the charging requirement of a load end, and sending the adaptation output power gear to the adapter.
Further, the step of sequentially sending the output power gear in the pre-stored message to the adapter specifically includes:
detecting whether an adapter is inserted;
and if the output power gear is not the same as the output power gear, the output power gear in the prestored message is sent to the adapter in sequence.
The present invention also provides a power adaptation apparatus, comprising:
the gear transmitting unit is used for sequentially transmitting the output power gears in the prestored messages to the adapter;
the gear selection unit is used for recording the output power gears which can be adapted by the adapter according to the adaptation signals after receiving at least one adaptation signal fed back by the adapter, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter for adaptation;
and the adaptation transmission unit is used for turning on an output unit after the adaptation is finished and transmitting the output power of the adapter to the load end.
Still further, the gear selection unit includes:
the first gear selection module is used for receiving at least one adaptation signal fed back by the adapter after the output power gears are all sent to the adapter, recording the output power gears capable of being adapted by the adapter according to the adaptation signal, selecting the adapted output power gears from the output power gears capable of being adapted by the adapter according to the charging requirement of a load end, and sending the adapted output power gears to the adapter.
Still further, the range transmitting unit includes:
the gear transmitting module is used for sequentially transmitting the output power gears in the prestored messages from high to low to the adapter;
the gear selection unit includes:
and the second gear selection module is used for determining that an output power gear matched with the adaptation signal is an adaptation output power gear capable of meeting the charging requirement of a load end after receiving the adaptation signal fed back by the adapter, and sending the adaptation output power gear to the adapter.
Still further, the range transmitting unit includes:
the detection module is used for detecting whether the adapter is inserted or not;
and the gear transmitting module is used for sequentially transmitting the output power gears in the prestored messages to the adapter if the insertion of the adapter is detected, and not transmitting the output power gears to the adapter if the insertion of the adapter is not detected.
The adapter has the advantages that the messages with different output power gears are sequentially transmitted to the adapter, the output power gears which can be adapted to the adapter are recorded according to the response information of the adapter, and the adapted output power gears which are mutually adapted to the adapter are determined according to the charging requirement of the load end, so that the adapter outputs the output power which can be output by the adapter and is mutually adapted to the load end, the mutual adaptation of the adapter and the load end is realized, and the charging efficiency of the load end is improved.
Drawings
Fig. 1 is a block diagram of a power adaptation circuit according to an embodiment of the present invention;
FIG. 2 is a block diagram of another power adaptation circuit provided by an embodiment of the invention;
fig. 3 is a circuit diagram of a communication unit according to an embodiment of the present invention;
FIG. 4 is a circuit diagram of an output unit according to a third embodiment of the present invention;
FIG. 5 is a circuit diagram of an interface unit according to a fifth embodiment of the present invention;
fig. 6 is a circuit diagram of an insertion detection unit and a control unit according to a sixth embodiment of the present invention;
fig. 7 is a flowchart of a power adaptation method according to a ninth embodiment of the present invention;
fig. 8 is a block diagram of a power adaptation apparatus according to an eleventh embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a power adapting circuit, wherein a control unit 300 sequentially sends output power gears to a communication unit 100, the communication unit 100 sequentially sends the output power gears to an adapter 400, and sends an adapting signal to the control unit 300 after receiving at least one adapting signal fed back by the adapter 400, the control unit 300 records the output power gears which can be adapted by the adapter 400 according to the adapting signal, selects an adapting output power gear from the output power gears which can be adapted by the adapter 400 according to the charging requirement of a load terminal 500, sends the adapting output power gear to the adapter 400 through the communication unit, and controls an output unit 200 to be conducted, so that the adapter 400 outputs output power corresponding to the adapting output power gear to the load terminal 500. The messages with different output power gears are sequentially transmitted to the adapter 400, the output power gears which can be adapted to the adapter 400 are recorded according to the response information of the adapter 400, and then the adapted output power gears which are adapted to the load end 500 are determined according to the charging requirement of the load end 500, so that the adapter 400 outputs the output power which can be output by the adapter 400 and is adapted to the load end 500, the adapter 400 and the load end 500 are adapted to each other, and the charging efficiency of the load end 500 is improved.
Example one
The present embodiment provides a power adaptation circuit, as shown in fig. 1, including a communication unit 100, an output unit 200, and a control unit 300, where the control unit 300 stores a message including a plurality of output power levels;
the control unit 300 sequentially sends the output power gears to the communication unit 100, the communication unit 100 sequentially sends the output power gears to the adapter 400, and after receiving at least one adaptation signal fed back by the adapter 400, the adaptation signals are respectively sent to the control unit 300, the control unit 300 records the output power gears which can be adapted by the adapter 400 according to the adaptation signals, selects the adaptation output power gears from the output power gears which can be adapted by the adapter 400 according to the charging requirement of the load terminal 500, sends the adaptation output power gears to the adapter 400 through the communication unit 100, and controls the output unit 200 to be conducted, so that the adapter 400 outputs the output power corresponding to the adaptation output power gears to the load terminal 500;
if the communication unit 100 has already sent all output power gears to the adapter 400, and has not received the adaptation signal fed back by the adapter 400, the control unit 300 sends a charging signal or a charging prohibition signal to the output unit 200 according to the charging requirement of the load terminal 500, and the output unit 200 is turned on or off according to the charging signal or the charging prohibition signal, so that the default output power output by the adapter 400 is transmitted or not transmitted to the load terminal 500.
For the above messages, the data blocks to be transmitted between the control unit 300 and the communication unit 100 can be generated by the USB PD PDO Tools, and as shown below, a 5V/0.9 message, i.e. 0201905A, and a 12V/1.75A message, i.e. 003C0AF are generated.
For the adaptation signals described above, the control unit 300 sends messages to the communication unit 100 via a specific protocol (e.g., the I2C protocol), and the communication unit 100 sends the messages to the adapter 400. If the adapter 400 is able to meet the output power level in the message, it responds with an adaptation signal to the communication unit 100, and the communication unit 100 acts as an adaptation signal by sending a series of signals to the control unit 300 that conform to the above-mentioned specific protocol.
The working principle of the power adaptation circuit is as follows:
the control unit 300 stores messages of a plurality of output power gears in advance, after the adapter 400 is inserted, the control unit 300 sequentially transmits the messages of different output power gears to the adapter 400 through the communication unit 100, if the communication unit 100 cannot receive an adaptation signal in the transmission process, the adapter 400 cannot output the output power corresponding to the output power gear, if the adaptation signal is received, the adapter 400 can output the output power corresponding to the output power gear, the communication unit 100 sends the adaptation signal to the control unit, the control unit 300 records at least one output power gear which can be adapted by the adapter 400, selects an adaptation output power gear from at least one output power gear which can be adapted by the adapter according to the charging requirement of the load end 500, transmits the adaptation output power gear to the adapter 400 through the communication unit 100, and controls the output unit 200 to be conducted, so that the adapter 400 outputs the output power corresponding to the adapted output power gear to the load terminal 500, thereby realizing the adaptation of the adapter 400 and the load terminal 500.
Among them, there are two cases:
in the first case, the control unit 300 stores a plurality of output power level messages in advance, after the adapter 400 is inserted, the control unit 300 sequentially transmits the messages of different output power levels to the adapter 400 through the communication unit 100, if the communication unit 100 does not receive an adaptation signal during transmission, the adapter 400 cannot output the output power corresponding to the output power level, if the adaptation signal is received, the adapter 400 can output the output power corresponding to the output power level, the control unit 300 sends a next message containing the output power level to the adapter 400 through the communication unit 100, the communication unit 100 sends the adaptation signal to the control unit, the control unit 300 records the output power level that can be adapted by the adapter 400, after the communication unit 100 has sent all the output power levels, an adapted output power level is selected from the output power levels that can be adapted by the adapter according to the charging requirement of the load terminal 500, the adapter 400 is sent to the adapter 400 through the communication unit 100, and the output unit 200 is controlled to be conducted, so that the adapter 400 outputs the output power corresponding to the adaptive output power gear to the load terminal 500, and the adaptation between the adapter 400 and the load terminal 500 is realized.
In the second case, the control unit 300 stores a plurality of output power level messages in advance, after the adapter 400 is inserted, the control unit 300 sequentially transmits the messages of different output power levels to the adapter 400 from high to low through the communication unit 100, if the communication unit 100 does not receive an adaptation signal during transmission, the adapter 400 cannot output the output power corresponding to the output power level, if the adaptation signal is received, the adapter 400 can output the output power corresponding to the output power level, the communication unit 100 sends the adaptation signal to the control unit, at this time, the communication unit 100 stops sending the remaining output power level, the control unit 300 determines that the output power level matched with the adaptation signal is the adaptation output power level capable of meeting the charging requirement of the load terminal 500, and sends the adaptation output power level to the adapter 400, the output unit 200 is controlled to be conducted, so that the adapter 400 outputs the output power corresponding to the adaptive output power gear to the load terminal 500, the quick adaptive maximum power charging of the adapter 400 and the load terminal 500 is realized, and the charging efficiency of the quick charging device can be greatly improved.
If the communication unit 100 has already sent all output power gears, and has not received the adaptation signal fed back by the adapter 400, at this time, the control unit 300 knows that the adapter 400 cannot adapt to all output power gears, the control unit 300 sends a charging signal to the output unit 200 according to the charging requirement of the load terminal 500, so that the output unit 200 is turned on, and the adapter 400 outputs the default output power to the load terminal 500, and charges the load terminal 500 with the default output power. However, it is also possible that the default output power does not meet the charging requirement of the load 500, the control unit 300 sends the charging prohibition signal to the output unit 200, and the output unit 200 is turned off according to the charging prohibition signal, so that the adapter 400 does not transmit the default output power to the load 500.
Preferably, the control unit 300 is a single chip microcomputer with model R5F 1026. The communication unit 100, as shown in fig. 3, may be, but is not limited to, a PD communication chip CYPD3177 (U1 in fig. 3). In the message stored by the control unit 300 and including a plurality of output power steps, the plurality of output power steps may include: 20V/3A, 20V/2A, 20V/1A, 15V/3A, 15V/2A, 15V/1A, 12V/3A, 12V/2A, 12V/1A, 9V/3A, 9V/2A, 5V/3A, 5V/2A, 5V/1A, when storing, these output power gears can be converted into PD0 messages meeting PD communication protocol, then serial number is coded for each output power gear, and stored in sequence on the FLASH of the single chip, when the single chip detects that the adapter 400 is inserted, under the condition that the output power gear of the adapter 400 is unknown, the single chip reads out PDO messages from the FLASH in sequence of serial numbers and sends them to the adapter 400, if the adapter 400 can meet the output power gear contained in the current PDO message, the single chip microcomputer receives the successfully configured adaptation signal fed back by the adapter 400, otherwise, the single chip microcomputer does not receive the adaptation information, if the communication unit 100 has sent all output power gears to the adapter 400, the single chip microcomputer records at least one output power gear that the adapter 400 can adapt to, selects an adaptation output power gear from the recorded output power gears according to the charging requirement of the load terminal 500, and sends the adaptation output power gear to the adapter 400 through the communication unit 100, so as to charge the load terminal 500. For example, if the output power gear that can be adapted by the adaptor 400 recorded by the single chip microcomputer includes three output power gears, that is, 20V, 15V, and 12V, and the power consumption requirement of the load terminal 500 is 9V (about two batteries), an optimal 12V may be selected from 20V, 15V, and 12V as the adapted output power gear, and the adapted output power gear is sent to the adaptor 400 through the communication unit 100, and the output unit 200 is controlled to be turned on, so that the adaptor 400 outputs 12V to the load terminal 500, where the power consumption requirement of the load terminal 500 may be stored in the control unit 300 in advance, or may be obtained after the communication unit 100 has sent all the output power gears, and this is not limited uniquely. If the communication unit 100 has sent all output power levels to the adapter 400, and has not received the adaptation signal fed back by the adapter 400, the single chip microcomputer outputs the default output power level (for example, 5V/0.9A) as the output power of the adapter 400 to the load 500.
In this embodiment, the messages with different output power gears are sequentially transmitted to the adapter 400, the adaptation signal fed back by the adapter 400 is acquired, at least one output power gear to which the adapter 400 can adapt is recorded, and the adaptation output power gear is selected from the recorded output power gears to which the adapter 400 can adapt according to the charging requirement of the load terminal 500, so that the adapter 400 and the load terminal 500 adapt, and the charging efficiency of the load terminal 500 is improved.
Example two
In the present embodiment, on the basis of the first embodiment, as shown in fig. 1, the output unit 200 includes a first output module 201 and a second output module 202.
The first output module 201 is connected to the communication unit 100 and the adaptor 400, respectively, and is configured to receive the output power output by the adaptor 400 and corresponding to the adapted output power gear, and transmit the output power to the load 500;
the second output module 202 is respectively connected to the control unit 300 and the adaptor 400, and is configured to transmit the default output power to the load terminal 500 when receiving the charging signal and the default output power output by the adaptor 400, and to turn off when receiving the charging prohibition signal and not transmit the default output power to the load terminal 500.
In this embodiment, if the adapter 400 can adapt to the output power gear, an adaptation signal is sent to the communication unit 100, the communication unit 100 sends the adaptation signal to the control unit 300, the control unit 300 records that the adapter 400 can adapt to the output power gear, selects an adaptation output power gear from the output power gears that the adapter can adapt to according to the charging requirement of the load terminal 500, sends the adaptation output power gear to the adapter 400 through the communication unit 100, and controls the first output module 201 to be turned on, so that the adapter 400 outputs the output power corresponding to the adaptation output power gear to the load terminal 500; if the control unit 300 has finished sequentially sending the output power to the adaptor 400 through the communication unit 100, and the communication unit 100 has not received the adapting signal, at this time, the control unit 300 sends the charging signal to the second output module 202 to turn on the second output module, so that the adaptor 400 outputs the default output power to the load terminal 500. However, it is also possible that the default output power does not meet the charging requirement of the load 500, the control unit 300 sends the charging prohibition signal to the output unit 200, and the output unit 200 is turned off according to the charging prohibition signal, so that the adapter 400 does not transmit the default output power to the load 500. By setting the multiple output lines, output power transmission under different conditions is realized, so that the adapter 400 and the load terminal 500 are quickly matched, and the charging efficiency is improved.
In other embodiments, referring to fig. 2, the output unit 200 may be provided with only one output module 203 and directly controlled by the control unit 300. Under the control of the control unit 300, the output module 203 may receive the output power output by the adaptor 400 corresponding to the adapted output power gear and transmit the output power to the load terminal 500, or may receive the default output power output by the adaptor 400 and transmit the default output power to the load terminal 500 when receiving the charging signal and when receiving the default output power output by the adaptor 400, and may terminate when receiving the charging prohibition signal and not transmit the default output power to the load terminal 500.
EXAMPLE III
IN this embodiment, on the basis of the second embodiment, as shown IN fig. 4, the first output module 201 includes a first fet Q1, a second fet Q2, a first resistor R8, and a second resistor R9, a drain of the first fet Q1 is connected to the input terminal VBUS _ IN of the adaptor 400 and one end of the first resistor R8, a source of the first fet Q1 is connected to a source of the second fet Q2, a gate of the first fet Q1 is connected to the other end of the first resistor R8, the gate of the second fet Q2, and one end of the second resistor R9, a drain of the second fet Q2 is connected to the output terminal VBUS _ OUT of the adaptor 400, and the other end of the second resistor R9 is connected to the communication unit 100.
Specifically, the first field effect transistor Q1 and the second field effect transistor Q2 may be Junction Field Effect Transistors (JFETs) or metal-oxide semiconductor field effect transistors (MOS-FETs), which are not limited herein.
In this embodiment, the two field effect transistors (Q1, Q2) are connected in series in reverse, so as to prevent the power sources on the left and right sides from flowing backward, and when the first output module 201 is turned on, the adapter 400 can output the output power corresponding to the selected adaptive power stage through the first output module 201 to stably supply power to the load terminal 500.
Example four
IN this embodiment, on the basis of the second embodiment, the second output module 202 includes a third fet Q5, a fourth fet Q4, a fifth fet Q6, a third resistor R14, a fourth resistor R16, a fifth resistor R17, and a sixth resistor R18, a drain of the third fet Q5 is connected to the input terminal VBUS _ IN of the adaptor 400 and one end of the third resistor R14, a source of the third fet Q5 is connected to the source of the fourth fet Q4, a gate of the third fet Q5 is connected to the other end of the third resistor R14, a gate of the fourth fet Q4, and one end of the fourth resistor R16, a drain of the fourth fet Q4 is connected to the output terminal VBUS _ OUT of the adaptor 400, the other end of the fourth resistor R16 is connected to the drain of the fifth fet Q6, and a source of the fifth fet Q6 is connected to one end of the sixth resistor R18 and the ground terminal, the gate of the fifth fet Q6 is connected to one end of the fifth resistor R17 and the other end of the sixth resistor R18, respectively, and the other end of the fifth resistor R17 is connected to the control unit 300.
In this embodiment, the two fets (Q4, Q5) are connected in series in reverse to prevent the power from flowing backward from the left and right sides, so that when the second output module 202 is turned on, the adaptor 400 outputs the default output power to the load terminal 500 through the second output module 202 to stably supply power to the load terminal 500.
EXAMPLE five
The present embodiment provides a power adaptation circuit, which further includes an interface unit 700 and an insertion detection unit 600 on the basis of the first embodiment;
the interface unit 700 is connected to the adaptor 400 for docking the adaptor 400;
the insertion detection unit 600 is connected to the control unit 300 and the adapter 400, respectively, and is configured to transmit an insertion signal to the control unit 300 when receiving the insertion signal transmitted by the adapter 400.
Specifically, as shown in fig. 5, the interface unit 700 is a TYPE-C socket interface J1, the adaptor 400 is connected to a data line, a TYPE-C plug of the data line is connected to a TYPE-C socket interface, the TYPE-C socket interface is respectively connected to the communication unit 100 and the adaptor 400, and the communication unit 100 sends a message to the adaptor 400 through the TYPE-C socket interface.
In this embodiment, the interface unit 700 is used to interface the adapter 400, the insertion detection unit 600 is used to detect an insertion signal of the adapter 400, and the insertion signal of the adapter 400 is timely sent to the control unit 300, so that the control unit 300 sequentially transmits messages of different output power levels to the adapter 400 through the communication unit 100 after determining that the adapter 400 is inserted.
EXAMPLE six
In the present embodiment, on the basis of the fifth embodiment, the connection between the insertion detection unit 600 and the control unit 300 is as shown in fig. 6, the insertion detection unit 600 includes a sixth fet Q3, a seventh resistor R10, an eighth resistor R11, and a ninth resistor R15, a drain of the sixth fet Q3 is connected to one end of the seventh resistor R10 and the control unit 300 (U2 in fig. 5), a source of the sixth fet Q3 is connected to one end of the ninth resistor R15 and the ground terminal, a gate of the sixth fet Q3 is connected to the other end of the ninth resistor R15 and one end of the eighth resistor R11, the other end of the seventh resistor R10 is connected to the power supply terminal, and the other end of the eighth resistor R11 is connected to the adaptor 400.
Specifically, the PD communication chip is used for a bridge communicating with the adaptor 400, and when the adaptor 400 is plugged into the TYPE-C socket interface, first, 5V is output at the VBUS _ IN port to turn on the sixth fet Q3, so that the Plug-IN signal PD _ Plug is at a low level, so that the single chip microcomputer U2 detects that the adaptor 400 is plugged IN, and then, the single chip microcomputer U2 starts communicating with the PD chip.
The control unit 300 communicates with the PD communication chip, and can calculate the power stage of the adapter 400 and determine the type of the adapter 400 according to the adaptation signal fed back by the adapter 400 during communication (mainly distinguishing the PD adapter 400 from the non-PD adapter 400):
if the inserted adaptor 400 is the PD adaptor 400, the VBUS _ FET _ EN pin of the PD communication chip outputs a low level to turn on the first FET Q1 and the second FET Q2, and the supply voltage VBUS of the adaptor 400 is supplied to the subsequent power consumption unit through the first FET Q1 and the second FET Q2.
If the inserted adapter 400 is a non-PD adapter 400, the single chip microcomputer U2 cannot detect a response signal of the adapter 400, and at this time, the pin EN _ OUT5V of the single chip microcomputer U2 outputs a high level, so that the fifth fet Q6 is turned on, the third fet Q5 and the fourth fet Q4 are turned on, and the power supply voltage VBUS of the adapter 400 is transmitted to a subsequent power utilization unit through the third fet Q5 and the fourth fet Q4.
Taking the load end 500 as an intelligent curtain as an example, the subsequent power utilization unit is a charging control circuit for charging the battery cell, and the adapter 400 outputs the output power corresponding to the output power gear to the charging control unit 300 to provide a proper charging current for the battery cell.
Since the PD controller is in communication with the adaptor 400, only when the PD adaptor 400 is inserted, the driving signal is outputted to turn on the first fet Q1 and the second fet Q2, so as to supply power to the load terminal 500. The power gear output by the adapter 400 is not known in advance by the single chip microcomputer U2, only the single chip microcomputer U2 sends the adapter 400 one by one from a message prepared in advance (for example, the adapter 400 can start sending from the highest voltage/high current), the adapter 400 can respond to a certain message, this indicates that the adapter 400 is able to adapt the output power level corresponding to the message, the control unit 300 records that the adapter 400 is able to adapt the output power level corresponding to the message, for selecting the adaptive output power gear from the output power gears that can be adapted to the adapter 400 according to the charging requirement of the load terminal 500, transmitting the selected adaptive output power gear to the adapter 400 through the communication unit 100, and controlling the first output module 201 to be conducted, so that the adapter 400 outputs the output power corresponding to the adapted output power gear to the load terminal 500 to supply power to the load terminal 500.
However, if all messages are sent by the single chip microcomputer U2, the communication unit 100 still does not receive the adaptation signal, and therefore the single chip microcomputer U2 cannot receive the adaptation signal, the single chip microcomputer U2 knows that the adaptor 400 cannot adapt to all output power gears, at this time, the second output module 202 is turned on, the third fet Q5 and the fourth fet Q4 are turned on, and the adaptor 400 outputs default output power (generally 5V/0.9A) through the second output module 202, and supplies power to the load terminal 500 with the default output power. However, it is also possible that the default output power does not meet the charging requirement of the load 500, the control unit 300 sends the charging prohibition signal to the output unit 200, and the output unit 200 is turned off according to the charging prohibition signal, so that the adapter 400 does not transmit the default output power to the load 500.
In this embodiment, the signal generated when the adapter 400 is plugged into the TYPE-C socket interface controls the conduction of the sixth fet Q3, so that the control unit 300 can detect the plugging signal of the adapter 400, and the control unit 300 communicates with the adapter 400 through the communication unit 100 only after the adapter 400 is plugged.
EXAMPLE seven
The present embodiment provides a controller, which includes the power adaptation circuit in the above embodiments.
In this embodiment, the power adaptation circuit in the above embodiment is applied to a controller (such as a charging controller) of an electrical appliance, and an output power gear that can be adapted by the adapter 400 can be determined according to an adaptation signal of the adapter 400, so that the adapter 400 is adapted to a charging requirement of the electrical appliance, and charging efficiency is improved.
Example eight
The present embodiment provides an electrical apparatus, which includes the power adaptation circuit in the foregoing embodiments.
In particular, the electrical device may be a smart window shade.
When the power adapter circuit is applied to the smart window curtain, the load terminal 500 is a charging control circuit for charging the battery cell. The PD communication chip installed on the curtain sends a power gear to the adapter 400 through the TYPE-C socket interface, if the adapter 400 is the PD adapter 400, the adapter 400 also has a PD communication chip, and the sent power gear is consistent with the adapting power of the adapter 400, and the PD communication chip of the adapter 400 feeds back an adapting signal to the PD communication chip on the intelligent curtain. When the adaptor 400 is not the PD adaptor 400, and the adaptor 400 cannot match the output power level transmitted by the communication unit 100, the adaptor 400 outputs the default output power to the charge control circuit.
In this embodiment, the messages with different output power gears are sequentially transmitted to the adapter 400, and the power gear that can be adapted by the adapter 400 is determined according to the adaptation signal of the adapter 400, so that the adapter 400 is adapted to the charging requirement of the intelligent curtain, and the charging efficiency of the intelligent curtain is improved.
Example nine
As shown in fig. 7, the present embodiment provides a power adaptation method, which can be applied to the power adaptation circuit according to the first embodiment to the sixth embodiment, and the power adaptation method includes the following steps:
step S100, sequentially sending output power gears in prestored messages to an adapter;
step S200, after at least one adaptation signal fed back by the adapter is received, recording the output power gear which can be adapted by the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter for adaptation;
step S300, after the adaptation is completed, an output unit is turned on to transmit the output power of the adapter to the load end;
step S400, if all output power gears are sent to the adapter, the adapter signals fed back by the adapter are not received, the default output power output by the adapter is received, and the default output power is transmitted to the load end according to the charging requirement of the load end, or the default output power is not transmitted to the load end according to the charging requirement of the load end.
For the above messages, the data blocks to be transmitted between the control unit 300 and the communication unit 100 can be generated by the USB PD PDO Tools, and as shown below, a 5V/0.9 message, i.e. 0201905A, and a 12V/1.75A message, i.e. 003C0AF are generated.
For the adaptation signals described above, the control unit 300 sends messages to the communication unit 100 via a specific protocol (e.g., the I2C protocol), and the communication unit 100 sends the messages to the adapter 400. If the adapter 400 is able to meet the output power level in the message, it responds with an adaptation signal to the communication unit 100, and the communication unit 100 acts as an adaptation signal by sending a series of signals to the control unit 300 that conform to the above-mentioned specific protocol.
Specifically, when power adaptation is performed, output power steps in a pre-stored message are sequentially transmitted to the adapter 400; if the adaptation signal fed back by the adapter 400 is received, it is indicated that the currently transmitted output power gear is matched with the adapter 400, the control unit records the output power gear which can be adapted by the adapter 400 and corresponds to the adaptation signal, and after the adaptation output power gear is selected from the output power gears which can be adapted according to the charging requirement of the load terminal 500, the adaptation output power gear is transmitted to the adapter 400, and then the output power corresponding to the adaptation output power gear is transmitted to the load terminal 500, otherwise, it is indicated that no output power gear matched with the adapter 400 exists in the prestored message, and at this time, the control unit 300 transmits the default output power to the load terminal 500. However, it is also possible that the default output power does not meet the charging requirement of the load 500, the control unit 300 sends the charging prohibition signal to the output unit 200, and the output unit 200 is turned off according to the charging prohibition signal, so that the adapter 400 does not transmit the default output power to the load 500.
In this embodiment, the messages with different output power levels are sequentially transmitted to the adapter 400, the output power levels that can be adapted by the adapter 400 are determined according to the adaptation signals received by the communication unit 100 and fed back by the adapter 400, and the adapted output power is selected from the output powers that can be adapted by the adapter 400 according to the charging requirement of the load terminal 500, so that the adapter 400 and the load terminal 500 are adapted to each other, and the charging efficiency of the load terminal 500 is improved.
In one of the cases, after receiving at least one adaptation signal fed back by the adapter, recording an output power gear that can be adapted to the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears that can be adapted to the adapter according to a charging requirement of a load, and sending the adaptation output power gear to the adapter specifically includes:
after the output power gears are all sent to the adapter, at least one adaptation signal fed back by the adapter is received, the output power gears which can be adapted to the adapter are recorded according to the adaptation signal, then the adaptation output power gears are selected from the output power gears which can be adapted to the adapter according to the charging requirement of a load end, and the adaptation output power gears are sent to the adapter.
Specifically, the control unit 300 stores a plurality of output power level messages in advance, after the adapter 400 is inserted, the control unit 300 sequentially transmits the messages of different output power levels to the adapter 400 through the communication unit 100, if the communication unit 100 cannot receive an adaptation signal in the transmission process, the adapter 400 cannot output the output power corresponding to the output power level, if the adaptation signal is received, the adapter 400 can output the output power corresponding to the output power level, the control unit 300 sends a next message containing the output power level to the adapter 400 through the communication unit 100, the communication unit 100 sends the adaptation signal to the control unit, the control unit 300 records the output power level that can be adapted by the adapter 400, after all the output power levels have been sent by the communication unit 100, an adaptation output power level is selected from the output power levels that can be adapted by the adapter according to the charging requirement of the load terminal 500, the adapter 400 is sent to the adapter 400 through the communication unit 100, and the output unit 200 is controlled to be conducted, so that the adapter 400 outputs the output power corresponding to the adaptive output power gear to the load terminal 500, and the adaptation between the adapter 400 and the load terminal 500 is realized.
In another case, the step of sequentially sending the output power steps in the pre-stored message to the adapter specifically includes:
sequentially sending the output power gears in the prestored messages from high to low to an adapter;
after receiving at least one adaptation signal fed back by the adapter, recording output power gears which can be adapted by the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter, specifically comprising the steps of:
after receiving an adaptation signal fed back by the adapter and an adaptation signal fed back by the adapter, determining an output power gear matched with the adaptation signal as an adaptation output power gear capable of meeting the charging requirement of a load end, and sending the adaptation output power gear to the adapter.
Specifically, the control unit 300 stores a plurality of output power level messages in advance, after the adapter 400 is inserted, the control unit 300 sequentially transmits the messages of different output power levels to the adapter 400 from high to low through the communication unit 100, if the communication unit 100 does not receive an adaptation signal during transmission, the adapter 400 cannot output the output power corresponding to the output power level, if the adaptation signal is received, the adapter 400 can output the output power corresponding to the output power level, the communication unit 100 sends the adaptation signal to the control unit, at this time, the communication unit 100 stops sending the remaining output power level, the control unit 300 determines that the output power level matched with the adaptation signal is the adaptation output power level capable of meeting the charging requirement of the load terminal 500, and sends the adaptation output power level to the adapter 400, and controls the output unit 200 to be turned on, so that the adapter 400 outputs the output power corresponding to the adaptive output power gear to the load terminal 500, thereby realizing the fast adaptive maximum power charging of the adapter 400 and the load terminal 500, and greatly improving the charging efficiency of the fast charging device.
Example ten
The present embodiment provides a power adaptation method, and on the basis of the ninth embodiment, the step S100 specifically includes the following sub-steps:
step S101, detecting whether an adapter is inserted;
step S102, if yes, output power gears in prestored messages are sequentially sent to the adapter, and if not, step S103 is executed;
step S103, no output power step is sent to the adapter.
Specifically, before sequentially sending the output power gear in the prestored message to the adapter 400, it is necessary to detect whether the adapter 400 is inserted, and ensure that the output power gear in the prestored message is sequentially sent to the adapter 400 in the state that the adapter 400 is inserted, otherwise, the output power gear is not sent to the adapter 400.
In this embodiment, by detecting whether the adapter 400 is inserted, when the adapter 400 is inserted, the output power gear in the prestored message is sequentially transmitted to the adapter 400, so that the adapter 400 is adapted to the load terminal 500.
EXAMPLE eleven
As shown in fig. 8, the present embodiment provides a power adaptation apparatus, which can be applied to the power adaptation circuits according to the first to sixth embodiments, and the power adaptation apparatus includes:
a gear transmitting unit, configured to sequentially transmit output power gears in a pre-stored message to the adapter 400;
the gear selection unit is used for recording the output power gears which can be adapted by the adapter according to the adaptation signals after receiving the at least one adaptation signal fed back by the adapter, selecting the adaptation output power gears from the output power gears which can be adapted by the adapter according to the charging requirement of the load end, and sending the adaptation output power gears to the adapter for adaptation;
the adapter transmission unit is used for turning on an output unit after the adapter is adapted to transmit the output power of the adapter to the load end;
and the default transmission unit is used for receiving the default output power output by the adapter and transmitting the default output power to the load end according to the charging requirement of the load end or not transmitting the default output power to the load end according to the charging requirement of the load end if all output power gears are transmitted to the adapter and the adapter does not receive the adaptation signals fed back by the adapter.
For the above messages, the data blocks to be transmitted between the control unit 300 and the communication unit 100 can be generated by the USB PD PDO Tools, and as shown below, a 5V/0.9 message, i.e. 0201905A, and a 12V/1.75A message, i.e. 003C0AF are generated.
For the adaptation signals described above, the control unit 300 sends messages to the communication unit 100 via a specific protocol (e.g., the I2C protocol), and the communication unit 100 sends the messages to the adapter 400. If the adapter 400 is able to meet the output power level in the message, it responds with an adaptation signal to the communication unit 100, and the communication unit 100 acts as an adaptation signal by sending a series of signals to the control unit 300 that conform to the above-mentioned specific protocol.
Specifically, when power adaptation is performed, the gear transmission unit sequentially transmits output power gears in a pre-stored message to the adapter 400; the judging unit judges whether the adapting signal fed back by the adapter 400 is received; if the control unit 300 determines that the adaptation signal fed back by the adapter 400 is received, the control unit 300 records the output power gear which can be adapted by the adapter and corresponds to the adaptation signal, selects an adaptation output power gear from the output power gears which can be adapted by the adapter 400 according to the charging requirement of the load terminal 500, and sends the adaptation output power gear to the adapter 400 so as to transmit the output power corresponding to the adaptation output power gear to the load terminal 500, otherwise, transmits the default output power to the load terminal 500. However, it is also possible that the default output power does not meet the charging requirement of the load 500, the control unit 300 sends the charging prohibition signal to the output unit 200, and the output unit 200 is turned off according to the charging prohibition signal, so that the adapter 400 does not transmit the default output power to the load 500.
In this embodiment, the messages with different output power levels are sequentially transmitted to the adapter 400, and the output power level that the adapter 400 can adapt to is determined according to the received adaptation signal fed back by the adapter 400, so that the adapter 400 and the load terminal 500 are adapted to each other, and the charging efficiency of the load terminal 500 is improved.
In one of the cases, the gear selection unit includes:
the first gear selection module is used for receiving at least one adaptation signal fed back by the adapter after the output power gears are all sent to the adapter, recording the output power gears capable of being adapted by the adapter according to the adaptation signal, selecting the adapted output power gears from the output power gears capable of being adapted by the adapter according to the charging requirement of a load end, and sending the adapted output power gears to the adapter.
Specifically, the control unit 300 stores a plurality of output power level messages in advance, after the adapter 400 is inserted, the control unit 300 sequentially transmits the messages of different output power levels to the adapter 400 through the communication unit 100, if the communication unit 100 cannot receive an adaptation signal in the transmission process, the adapter 400 cannot output the output power corresponding to the output power level, if the adaptation signal is received, the adapter 400 can output the output power corresponding to the output power level, the control unit 300 sends a next message containing the output power level to the adapter 400 through the communication unit 100, the communication unit 100 sends the adaptation signal to the control unit, the control unit 300 records the output power level that can be adapted by the adapter 400, after all the output power levels have been sent by the communication unit 100, an adaptation output power level is selected from the output power levels that can be adapted by the adapter according to the charging requirement of the load terminal 500, the adapter 400 is sent to the adapter 400 through the communication unit 100, and the output unit 200 is controlled to be conducted, so that the adapter 400 outputs the output power corresponding to the adaptive output power gear to the load terminal 500, and the adaptation between the adapter 400 and the load terminal 500 is realized.
In another case, the range transmitting unit includes:
the gear transmitting module is used for sequentially transmitting the output power gears in the prestored messages from high to low to the adapter;
the gear selection unit includes:
and the second gear selection module is used for determining that an output power gear matched with the adaptation signal is an adaptation output power gear capable of meeting the charging requirement of a load end after receiving the adaptation signal fed back by the adapter, and sending the adaptation output power gear to the adapter.
Specifically, the control unit 300 stores a plurality of output power level messages in advance, after the adapter 400 is inserted, the control unit 300 sequentially transmits the messages of different output power levels to the adapter 400 from high to low through the communication unit 100, if the communication unit 100 does not receive an adaptation signal during transmission, the adapter 400 cannot output the output power corresponding to the output power level, if the adaptation signal is received, the adapter 400 can output the output power corresponding to the output power level, the communication unit 100 sends the adaptation signal to the control unit, at this time, the communication unit 100 stops sending the remaining output power level, the control unit 300 determines that the output power level matched with the adaptation signal is the adaptation output power level capable of meeting the charging requirement of the load terminal 500, and sends the adaptation output power level to the adapter 400, and controls the output unit 200 to be turned on, so that the adapter 400 outputs the output power corresponding to the adaptive output power gear to the load terminal 500, thereby realizing the fast adaptive maximum power charging of the adapter 400 and the load terminal 500, and greatly improving the charging efficiency of the fast charging device.
Example twelve
This embodiment provides a power adaptation device, on the basis of embodiment eleven, the gear position transmitting unit includes:
the detection module is used for detecting whether the adapter is inserted or not;
and the gear transmitting module is used for sequentially transmitting the output power gears in the prestored messages to the adapter if the insertion of the adapter is detected, and not transmitting the output power gears to the adapter if the insertion of the adapter is detected.
Specifically, the detection module detects whether the adapter 400 is plugged in; if it is detected that the adapter 400 is inserted, the gear transmission module sequentially transmits the output power gears in the prestored messages to the adapter 400, otherwise, the output power gears are not transmitted to the adapter 400.
In this embodiment, by detecting whether the adapter 400 is inserted, when the adapter 400 is inserted, the output power gear in the prestored message is sequentially transmitted to the adapter 400, so that the adapter 400 is adapted to the load terminal 500.
In summary, in the present invention, the messages of different output power levels are sequentially transmitted to the adapter 400, the adaptation signal fed back by the adapter is obtained, the output power levels that can be adapted by the adapter are recorded, and the adaptation output power level is selected from the recorded output power levels that can be adapted by the adapter according to the charging requirement of the load terminal 500, so that the adapter 400 is adapted to the load terminal 500, and the charging efficiency of the load terminal 500 is improved. In the output unit 200, the first output module 201 is configured to receive the output power output by the adapter 400 and corresponding to the adapted output power gear, and transmit the output power to the load end 500; the second output module 202 is configured to receive the default output power output by the adaptor 400 when receiving the charging signal, and transmit the default output power to the load terminal 500. However, it is also possible that the default output power does not meet the charging requirement of the load 500, the control unit 300 sends the charging prohibition signal to the output unit 200, and the output unit 200 is turned off according to the charging prohibition signal, so that the adapter 400 does not transmit the default output power to the load 500. Through setting up multichannel output line, realize output power transmission under the different condition to realize adapter 400 and load end 500's quick matching, improve charge efficiency. Specifically, the two field effect transistors are connected in series in an inverted manner, so that power sources on the left side and the right side are prevented from flowing backwards, and when the first output module 201 or the second output module 202 is turned on, the power can be stably supplied to the load terminal 500. Further, the interface unit 700 is used to realize the docking of the adaptor 400, the insertion detection unit 600 is used to detect the insertion signal of the adaptor 400, and the insertion signal of the adaptor 400 is sent to the control unit 300 in time, so that the control unit 300 can transmit the messages of different output power gears to the adaptor 400 in sequence through the communication unit 100 after determining that the adaptor 400 is inserted. The signal generated when the adapter 400 is plugged into the TYPE-C socket interface controls the conduction of the sixth fet Q3, so that the control unit 300 can detect the plugging signal of the adapter 400, and the control unit 300 can communicate with the adapter 400 through the communication unit 100 only after the adapter 400 is plugged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (16)
1. A power adaptation circuit is characterized by comprising a communication unit, an output unit and a control unit, wherein the control unit stores a message comprising a plurality of output power gears;
the control unit sends the output power gear to the communication unit in sequence, the communication unit sends the output power gear to the adapter in sequence, after at least one adaptation signal fed back by the adapter is received, the adaptation signal is sent to the control unit, the control unit records the output power gear which can be adapted by the adapter according to the adaptation signal, then selects an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, sends the adaptation output power gear to the adapter through the communication unit, and controls the output unit to be conducted, so that the adapter outputs the output power corresponding to the adaptation output power gear to the load end.
2. The power adaptation circuit of claim 1, wherein the output unit comprises a first output module and a second output module,
the first output module is respectively connected with the communication unit and the adapter and used for receiving the output power output by the adapter and corresponding to the adaptive output power gear and transmitting the output power to the load end;
the second output module is respectively connected with the control unit and the adapter, and is used for receiving the default output power output by the adapter when receiving the charging signal, transmitting the default output power to the load end, and stopping when receiving the charging prohibition signal, and not transmitting the default output power to the load end.
3. The power adapter circuit according to claim 2, wherein the first output module comprises a first field effect transistor, a second field effect transistor, a first resistor and a second resistor, a drain of the first field effect transistor is connected to the input terminal of the adapter and one end of the first resistor, respectively, a source of the first field effect transistor is connected to a source of the second field effect transistor, a gate of the first field effect transistor is connected to the other end of the first resistor, a gate of the second field effect transistor and one end of the second resistor, respectively, a drain of the second field effect transistor is connected to the output terminal of the adapter, and the other end of the second resistor is connected to the communication unit.
4. The power adapter circuit of claim 2, wherein the second output module comprises a third fet, a fourth fet, a fifth fet, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor, a drain of the third fet is connected to the input terminal of the adapter and one end of the third resistor, a source of the third fet is connected to a source of the fourth fet, a gate of the third fet is connected to the other end of the third resistor, a gate of the fourth fet, and one end of the fourth resistor, a drain of the fourth fet is connected to the output terminal of the adapter, the other end of the fourth resistor is connected to a drain of the fifth fet, and a source of the fifth fet is connected to one end of the sixth resistor and a ground terminal, and the grid electrode of the fifth field effect transistor is respectively connected with one end of the fifth resistor and the other end of the sixth resistor, and the other end of the fifth resistor is connected with the control unit.
5. The power adaptation circuit of claim 1, further comprising an interface unit and an insertion detection unit;
the interface unit is connected with the adapter and is used for butting the adapter;
the insertion detection unit is respectively connected with the control unit and the adapter and used for sending an insertion signal to the control unit when receiving the insertion signal sent by the adapter.
6. The power adapter circuit according to claim 5, wherein the insertion detection unit comprises a sixth field effect transistor, a seventh resistor, an eighth resistor and a ninth resistor, a drain of the sixth field effect transistor is connected to one end of the seventh resistor and the control unit, respectively, a source of the sixth field effect transistor is connected to one end of the ninth resistor and a ground terminal, respectively, a gate of the sixth field effect transistor is connected to the other end of the ninth resistor and one end of the eighth resistor, the other end of the seventh resistor is connected to a power supply terminal, and the other end of the eighth resistor is connected to the adapter.
7. A controller comprising a power adaptation circuit as claimed in any one of claims 1 to 6.
8. An electrical apparatus, characterized in that it comprises a power adaptation circuit according to any one of claims 1 to 6.
9. A method of power adaptation, comprising the steps of:
sequentially sending output power gears in prestored messages to an adapter;
after at least one adaptation signal fed back by the adapter is received, recording the output power gear which can be adapted by the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter for adaptation;
and after the adaptation is finished, an output unit is turned on to transmit the output power of the adapter to the load end.
10. The power adapting method according to claim 9, wherein the step of recording the output power gear stage that can be adapted by the adapter according to the adaptation signal after receiving the at least one adaptation signal fed back by the adapter, selecting an adapted output power gear stage from the output power gear stage that can be adapted by the adapter according to the charging requirement of the load side, and sending the adapted output power gear stage to the adapter specifically comprises:
after the output power gears are all sent to the adapter, at least one adaptation signal fed back by the adapter is received, the output power gears which can be adapted to the adapter are recorded according to the adaptation signal, then the adaptation output power gears are selected from the output power gears which can be adapted to the adapter according to the charging requirement of a load end, and the adaptation output power gears are sent to the adapter.
11. The power adaptation method according to claim 9, wherein the step of sequentially transmitting the output power level in the pre-stored message to the adapter specifically comprises:
sequentially sending the output power gears in the prestored messages from high to low to an adapter;
after receiving at least one adaptation signal fed back by the adapter, recording output power gears which can be adapted by the adapter according to the adaptation signal, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter, specifically comprising the steps of:
and after receiving an adaptation signal fed back by the adapter, determining an output power gear matched with the adaptation signal as an adaptation output power gear capable of meeting the charging requirement of a load end, and sending the adaptation output power gear to the adapter.
12. The power adaptation method according to claim 9, wherein the step of sequentially sending the output power level in the pre-stored message to the adapter specifically comprises:
detecting whether an adapter is inserted;
and if the output power gear is not the same as the output power gear, the output power gear in the prestored message is sent to the adapter in sequence.
13. A power adaptation device, comprising:
the gear transmitting unit is used for sequentially transmitting the output power gears in the prestored messages to the adapter;
the gear selection unit is used for recording the output power gears which can be adapted by the adapter according to the adaptation signals after receiving at least one adaptation signal fed back by the adapter, selecting an adaptation output power gear from the output power gears which can be adapted by the adapter according to the charging requirement of a load end, and sending the adaptation output power gear to the adapter for adaptation;
and the adaptation transmission unit is used for turning on an output unit after the adaptation is finished and transmitting the output power of the adapter to the load end.
14. The power adapting device according to claim 13, wherein the gear selection unit comprises:
the first gear selection module is used for receiving at least one adaptation signal fed back by the adapter after the output power gears are all sent to the adapter, recording the output power gears capable of being adapted by the adapter according to the adaptation signal, selecting the adapted output power gears from the output power gears capable of being adapted by the adapter according to the charging requirement of a load end, and sending the adapted output power gears to the adapter.
15. The power adapting device according to claim 13, wherein the gear transmission unit comprises:
the gear transmitting module is used for sequentially transmitting the output power gears in the prestored messages from high to low to the adapter;
the gear selection unit includes:
and the second gear selection module is used for determining that an output power gear matched with the adaptation signal is an adaptation output power gear capable of meeting the charging requirement of a load end after receiving the adaptation signal fed back by the adapter, and sending the adaptation output power gear to the adapter.
16. The power adapting device according to claim 13, wherein the gear transmission unit comprises:
the detection module is used for detecting whether the adapter is inserted or not;
and the gear transmitting module is used for sequentially transmitting the output power gears in the prestored messages to the adapter if the insertion of the adapter is detected, and not transmitting the output power gears to the adapter if the insertion of the adapter is not detected.
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| CN113596970B (en) * | 2021-08-05 | 2023-11-21 | 上海商米科技集团股份有限公司 | Talkback terminal power control method and system, talkback terminal and storage medium |
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