CN113629802A - Power supply device - Google Patents
Power supply device Download PDFInfo
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- CN113629802A CN113629802A CN202110801481.6A CN202110801481A CN113629802A CN 113629802 A CN113629802 A CN 113629802A CN 202110801481 A CN202110801481 A CN 202110801481A CN 113629802 A CN113629802 A CN 113629802A
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- 241000801924 Sena Species 0.000 description 12
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- 238000004891 communication Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
Abstract
The invention provides a power supply device, which is used for electrically connecting a plurality of charging devices, and comprises: a power supply unit; at least two interfaces, each of which is used to be electrically connected to the power supply unit and the corresponding charging device to supply power to the charging device; each control unit is used for being electrically connected to the power supply unit and the corresponding interface, and outputting a first voltage to the corresponding interface when the charging equipment on the power supply device is pulled out to be only one, so as to communicate with the corresponding charging equipment through the interface, and further control the power supply unit to output a preset voltage to rapidly charge the charging equipment. The power supply device provided by the invention effectively reduces operation steps, thereby improving user experience.
Description
Technical Field
The invention relates to the field of charging, in particular to a power supply device.
Background
With the popularization of the quick charging technology, various quick charging technologies are more and more widely applied. When entering a fast charging state, a mobile terminal (e.g., a mobile phone, a tablet computer, etc.) applies for a fast charging voltage from a fast charging power supply device (e.g., a fast charging mobile power supply or a fast charging adapter, etc.) having a fast charging chip through a fast charging protocol.
In addition, in order to meet the charging requirements of the fast-charging and slow-charging equipment and the safety of the charging equipment, the current fast-charging equipment with a plurality of charging ports can only realize single-port fast charging. Once a plurality of devices are plugged simultaneously for charging, the voltage is uniformly pressed to 5V for output. When switching from the ordinary charging mode of a plurality of devices to the fast charging mode of a single device, all the devices need to be unplugged and then plugged into the single device, so that the single device enters the fast charging mode again.
Disclosure of Invention
In view of the above, the present invention provides a power supply apparatus for electrically connecting a plurality of charging devices, the power supply apparatus comprising:
a power supply unit;
at least two interfaces, each of which is used to be electrically connected to the power supply unit and the corresponding charging device to supply power to the charging device;
each control unit is used for being electrically connected to the power supply unit and the corresponding interface, and outputting a first voltage to the corresponding interface when the charging equipment on the power supply device is pulled out to be only one, so as to communicate with the corresponding charging equipment through the interface, and further control the power supply unit to output a preset voltage to rapidly charge the charging equipment.
According to the power supply device provided by the invention, the control chip and the electronic switch are arranged between the power supply unit and the interface, when only one charging device of the power supply device is pulled out, the control chip outputs current to the first end of the electronic switch through the driving pin so as to output the first voltage to the interface, further protocol handshaking is carried out again with the charging device, and a sharing mode enters a quick charging mode, so that the insertion and pulling-out steps of the charging device entering the quick charging mode from the sharing mode are reduced, and the user experience is improved.
Drawings
Fig. 1 is a connection block diagram of a power supply device and a charging device according to an embodiment of the present invention.
Fig. 2 is a circuit block diagram of the connection between the power supply apparatus shown in fig. 1 and the charging device.
Fig. 3 is a circuit diagram of the power supply apparatus shown in fig. 1 connected to a charging device.
Description of the main elements
Voltage output pin VOUT
Feedback pin FB
Supply pin VBUS
Grounding pin GND
Drive pin FLAGA
Control pin SENA
Power supply voltage detection pin VD
Detection pin SUA
Multi-port control pin MPC
Feedback output pin FBO
First end G
Second end D
Third terminal S
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
It will be understood that when an element is referred to as being "electrically connected" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "electrically connected" to another element, it can be connected by contact, e.g., by wires, or by contactless connection, e.g., by contactless coupling.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a power supply apparatus 100 according to an embodiment of the present invention is configured to be electrically connected to a plurality of charging devices 200, and to match corresponding charging modes for the charging devices 200 and perform charging.
In this embodiment, the power supply apparatus 100 and the charging device 200 may be devices supporting Universal Serial Bus (USB) specification. The power supply apparatus 100 may be a USB device with multiple ports, such as a mobile power source with multiple ports or a USB adapter with multiple ports.
Referring to fig. 2, the power supply apparatus 100 includes a power supply unit 10, at least two interfaces 20, and at least two control units 30. The interfaces 20 are connected to the control units 30 in a one-to-one correspondence.
The power supply unit 10 may output dc voltages having different voltage values, such as 5V, 9V, or 12V.
Each of the interfaces 20 is configured to be electrically connected to the power supply unit 10 and the corresponding charging apparatus 200 to supply power to the charging apparatus 200.
In this embodiment, the interface 20 is a Type-a interface. It is understood that the charging device 200 includes a connector 210. The connector 210 is also a Type-a interface. As such, the interface 20 is connected with the charging apparatus 200 through the connector 210.
It can be understood that, when the connector 210 is plugged with the interface 20, the power supply unit 10 forms a current loop with the charging device 200 through the interface 20 and the connector 210. At this time, the power supply unit 10 supplies power to the battery pack 220 (see fig. 3) of the charging apparatus 200 through the interface 20 and the connector 210.
Each of the control units 30 is electrically connected to the power supply unit 10 and the corresponding interface 20. The control unit 30 is configured to output a first voltage to the corresponding interface 20 when the plurality of charging devices 200 on the power supply apparatus 100 are unplugged to only one, so as to communicate with the corresponding charging device 200 through the interface 20, and further control the power supply unit 10 to output a preset voltage to the charging device 200 for fast charging.
Referring to fig. 3, in the present embodiment, the power supply unit 10 is configured to receive an input voltage, such as an ac voltage, and output a dc voltage having a preset voltage value to provide power for the charging device 200. In an alternative embodiment, the power supply unit 10 may be a chip of type PL 2733C. The power supply unit 10 includes a voltage output pin VOUT and a feedback pin FB.
The power supply unit 10 is a voltage conversion chip.
In an alternative embodiment, the control unit 30 includes a control chip 31 and an electronic switch 32.
The control chip 31 may be a multi-port charging protocol chip. In an embodiment, the control chip 31 may be a fast charging chip with a model number FP6601AA or a model number FP 6601A.
The control chip 31 includes a driving pin FLAGA, a control pin SENA, a power voltage detection pin VD, a detection pin SUA, a multi-port control pin MPC, and a feedback output pin FBO.
The electronic switch 32 includes a first terminal G, a second terminal D and a third terminal S. In this embodiment, the electronic switch 32 is an NMOS transistor. The first end G of the electronic switch tube 212 is a Gate (Gate), the second end D of the electronic switch tube 212 is a Drain (Drain), and the third end S of the electronic switch tube 212 is a Source (Source).
In an alternative embodiment, the interface 20 includes a power pin VBUS and a ground pin GND.
It is understood that the connector 210 also includes a power pin VBUS and a ground pin GND. The power supply pin VBUS of the connector 210 is correspondingly connected to the power supply pin VBUS of the interface 20, and the ground pin GND of the connector 210 is correspondingly connected to the ground pin GND of the interface 20.
Wherein, the power pin VBUS of the interface 20 is electrically connected to the voltage output pin VOUT of the power supply unit 10, for receiving the electric energy output by the power supply unit 10.
The driving pin FLAGA of each of the control chips 31 is electrically connected to the first terminal G of the electronic switch 32 through a resistor R1. The control pin SENA is electrically connected between the first terminal G of the electronic switch 32 and the resistor R1. The second end D of each electronic switch 32 is electrically connected to the ground pin GND of the corresponding interface 20. The third terminal S of each of the electronic switches 32 is grounded.
The driving pin FLAGA is used for outputting a voltage, and the control pin SENA is used for outputting a first current. It is understood that the electronic switch 32 is driven when the driving pin FLAGA outputs a voltage to the first terminal G of the electronic switch 32. The control chip 31 can control the control pin SENA to output the first current, and the first current is a changing current, so that the voltage at the first end G of the electronic switch 32 changes along with the change of the first current output by the control pin SENA, and further the voltage at the second end D of the electronic switch 32 changes. Since the second terminal D of the electronic switch 32 is connected to the ground pin GND of the interface 20, the control pin SENA can be used to drive the electronic switch 32, so that the voltage at the second terminal D of the electronic switch 32 is changed to output a voltage to the interface 20.
In this embodiment, when the driving pin FLAGA outputs a voltage to the first terminal G of the electronic switch 32, the control chip 31 may control the control pin SENA to output a first current, so as to decrease the voltage at the first terminal G of the electronic switch 32. Since the electronic switch 32 is an NMOS transistor, the on-resistance of the electronic switch 32 increases, the on-current decreases, and the voltage at the second terminal D of the electronic switch 32 increases. Since the second terminal D of the electronic switch 32 is connected to the ground pin GND of the interface 20, the voltage of the ground pin GND of the interface 20 is increased.
That is, in the present embodiment, the control chip 31 outputs a first current at the first end G of the electronic switch 32 through the control pin SENA, so that the second end D of the electronic switch 32 outputs the first voltage to the corresponding ground pin GND of the interface 20.
The power supply voltage detection pin VD of each of the control chips 31 is electrically connected to the corresponding power supply pin VBUS of the interface 20 for detecting a voltage value on the power supply pin VBUS of the interface 20. The control chip 31 controls the current value of the first current according to the voltage value on the power supply pin VBUS, so that the first voltage is the same as the voltage value on the power supply pin VBUS.
The detection pin SUA of each of the control chips 31 is electrically connected to the ground pin GND of the corresponding interface 20, and is configured to detect a voltage of the ground pin GND of the corresponding interface 20.
It is understood that a higher instantaneous voltage is generated on the detection pin SUA at the moment when the charging device 200 is plugged into the interface 20. In this way, the charging device 200 and the control chip 31 can confirm that the charging device 200 is connected to the corresponding interface 20, and then perform communication to confirm the corresponding charging parameters, such as the charging voltage. That is, when the control chip 31 detects that a higher instantaneous voltage is generated on the detection pin SUA, the control chip 31 can confirm that the corresponding interface 20 is just plugged with the charging apparatus 200.
It can be understood that, when the charging device 200 is connected to the corresponding interface 20, the power supply unit 10, the control chip 31, the electronic switch 32, the interface 20 and the charging device 200 form an electrical circuit. In this way, when the control chip 31 outputs a second current between the second terminal D of the electronic switch 32 and the ground pin GND through the detection pin SUA, a second voltage is generated between the corresponding second terminal D of the electronic switch 32 and the corresponding ground pin GND of the interface 20. The detection pin SUA may be configured to detect a second voltage of the ground pin GND of the corresponding interface 20, and when the control chip 31 detects that the second voltage exceeds a preset threshold (e.g., 0.8V) through the detection pin SUA, the control chip 31 determines that the corresponding interface 20 is connected to the charging device 200; when the control chip 31 detects that the second voltage is smaller than the preset threshold through the detection pin SUA, the control chip 31 determines that the corresponding interface 20 is not connected to the charging device 200.
In this embodiment, the second current is a constant current, and the second current is smaller than the first current. The second voltage is less than the first voltage.
The multi-port control pin MPC of each of the control chips 31 is electrically connected to the multi-port control pin MPC of an adjacent control chip 31. The multi-port control pin MPC is configured to output a first level (e.g., a low level, 0.2V) when only one of the interfaces 20 of the power supply apparatus 100 is connected to the charging device 200. The multi-port control pin MPC is further configured to output a second level (e.g., a high level, the first level is greater than or equal to 0.4V) when at least two of the interfaces 20 of the power supply apparatus 100 are connected to the charging device 200. In this way, each of the control chips 31 determines the number of the charging devices 200 connected to the power supply apparatus 100 by detecting the voltage on the multi-port control pin MPC.
For example, when the control chip 31 detects that the voltage on the multi-port control pin MPC is at the first level, the control chip 31 confirms that the power supply device 100 is electrically connected to only one charging apparatus 200. When the control chip 31 detects that the voltage on the multi-port control pin MPC is at the second level, the control chip 31 confirms that at least two charging devices 200 are electrically connected to the power supply device 100.
It is understood that in this embodiment, one of the multi-port control pins MPC is further grounded via a resistor R2 for generating the first level or the second level at each of the multi-port control pins MPC. It can be understood that, since the multi-port control pins MPC are connected in parallel and then grounded through the resistor R2, when only one of the interfaces 20 of the power supply apparatus 100 is connected to the charging device 200, the multi-port control pin MPC corresponding to the interface 20 outputs current to the resistor R2, so that the first level is generated at both ends of the resistor R2, and since each of the multi-port control pins MPC is connected to the resistor R2, each of the multi-port control pins MPC detects the first level. It is understood that when at least two of the interfaces 20 of the power supply apparatus 100 are connected to the charging device 200, at least two multi-port control pins MPC corresponding to at least two of the interfaces 20 will output current to the resistor R2, so that the second level is generated across the resistor R2, and the voltage value of the second level is at least two times of the first level. Also, since each of the multi-port control pins MPC is connected to the resistor R2, each of the multi-port control pins MPC detects the second level.
The feedback output pin FBO of each of the control chips 31 is electrically connected to the feedback pin FB of the power supply unit 10, and is used for outputting a control signal to control the power supply unit 10 to output a preset voltage to the charging device 200 connected to the power supply apparatus 100.
Referring to fig. 2 and fig. 3, the operation principle of the power supply apparatus 100 is as follows:
when the power supply apparatus 100 connects at least two charging devices 200, all the connected charging devices 200 are charged in a sharing mode, that is, all the charging devices 200 are charged at a first voltage (for example, 5V).
At this time, the control chip 31 outputs the second current to between the second terminal D of the electronic switch 32 and the ground pin GND through the detection pin SUA at preset time intervals (for example, 4.8S) to generate the second voltage on the ground pin GND of the corresponding interface 20. The control chip 31 detects whether the second voltage exceeds the preset threshold through the detection pin SUA, so as to detect whether the corresponding interface 20 is connected to the charging device 200. It is understood that, since the power supply apparatus 100 connects at least two charging devices 200, the control chip 31 detects that the voltage on the multi-port control pin MPC is at the second level.
When only one of the plurality of charging devices 200 is unplugged from the power supply apparatus 100, the control chip 31 detects that the voltage on the multi-port control pin MPC is at the first level. Meanwhile, the control chip 31 detects that the voltage on the power supply pin VBUS of the corresponding interface 20 is the first voltage through the power supply voltage detection pin VD, and the control chip 31 also outputs the first current at the first end G of the electronic switch 32 through the control pin SENA at the same time, so as to raise the voltage value of the second end D of the electronic switch 32 to the first voltage within the preset time (for example, 1.2S), that is, raise the voltage of the ground pin GND of the corresponding interface 20 to the first voltage.
In this way, the control chip 31 communicates with the corresponding charging device 200 again through the corresponding interface 20, and the control chip 31 further controls the power supply unit 10 to output a preset voltage (e.g., 9V) to the charging device 200 for fast charging, so that the charging device 200 enters a fast charging mode (e.g., QC3.0 fast charging mode).
It can be understood that, after the charging device 200 communicates with the control chip 31 again, the control chip 31 outputs a first control signal to the power supply unit 10 through the feedback output pin FBO to control the power supply unit 10 to output the preset voltage to the corresponding charging device 200.
It can be understood that after the predetermined time, the voltage at the ground pin GND of the corresponding interface 20 falls back to the potential of the ground point.
Therefore, the charging equipment 200 can enter a quick charging mode from a sharing mode without being unplugged or plugged again, operation steps are effectively reduced, and user experience is improved.
It is understood that when another charging device 200 is connected to the interface 20 again, the corresponding control chip 31 detects an instantaneous voltage greater than 0.8V through the detection pin SUA of the interface 20, and the control chip 31 confirms that the corresponding interface 20 is connected to the charging device 200. At this time, all the control chips 31 detect that the voltage on the multi-port control pin MPC is at the second level, and the control chips 31 output a second control signal to the power supply unit 10 through the feedback output pin FBO, so that the power supply unit 10 re-outputs the first voltage to the corresponding charging device 200 to enter a shared charging mode.
It is understood that, in the present embodiment, the control chip 31 outputs the first current by providing a first current source (not shown) at the control pin SENA. The first current source is an adjustable current source and can output the first current in a variable mode.
It is understood that, in the present embodiment, the control chip 31 outputs a second current by providing a second current source (not shown) at the detection pin SUA. The second current source is a constant current source for outputting the stable second current.
It is understood that in other embodiments, the interface 20 and the connector 210 may be other types of interfaces, such as a Type-C interface.
It is understood that in other embodiments, at least two of the interfaces 20 may include a Type-a interface and a Type-C interface. Namely, the power supply device 100 can have a Type-a interface and a Type-C interface at the same time.
It is understood that, in other embodiments, the power supply apparatus 100 and the charging device 200 are not limited to the USB device, but may be power supply apparatuses and charging devices having other communication specifications.
It can be understood that, in the power supply apparatus 100 provided in the present application, the control chip 31 and the electronic switch 32 are disposed between the power supply unit 10 and the interface 20, when the charging device 200 of the power supply apparatus 100 is pulled out to only one, the control chip 31 outputs the first current at the first end G of the electronic switch 32 through the control pin SENA, so as to change the voltage of the second end D of the electronic switch 32, and output the first voltage to the interface 20, and further perform protocol handshake with the charging device 200 again, and enter the fast charging mode from the shared mode, thereby reducing the insertion and removal steps when the charging device 200 enters the fast charging mode from the shared mode, and improving user experience.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. It will be understood by those skilled in the art that various modifications and equivalent arrangements can be made without departing from the spirit and scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. A power supply unit for electrically connecting a plurality of charging devices, characterized in that: the power supply device includes:
a power supply unit;
at least two interfaces, each of which is used to be electrically connected to the power supply unit and the corresponding charging device to supply power to the charging device;
each control unit is used for being electrically connected to the power supply unit and the corresponding interface, and outputting a first voltage to the corresponding interface when the charging equipment on the power supply device is pulled out to be only one, so as to communicate with the corresponding charging equipment through the interface, and further control the power supply unit to output a preset voltage to rapidly charge the charging equipment.
2. The power supply device according to claim 1, wherein: the control unit comprises a control chip and an electronic switch, the control chip comprises a control pin, the electronic switch comprises a first end, a second end and a third end, the interface comprises a power supply pin and a grounding pin, wherein,
the control pin is electrically connected to a first end of the electronic switch, a second end of the electronic switch is electrically connected to a corresponding grounding pin of the interface, a third end of the electronic switch is grounded, and the power supply pin is electrically connected to the power supply unit;
when the charging devices on the power supply device are removed to only one charging device, the control chip outputs a first current within a preset time through the control pin so as to raise the voltage value of the second end of the electronic switch and the corresponding grounding pin of the interface to a first voltage within the preset time.
3. The power supply device according to claim 2, wherein: the control chip further comprises a power supply voltage detection pin, the power supply voltage detection pin is electrically connected to the corresponding power supply pin of the interface and used for detecting the voltage value on the power supply pin of the interface, and the control chip controls the current value of the first current according to the voltage value on the power supply pin, so that the first voltage is the same as the voltage value on the power supply pin.
4. The power supply device according to claim 2, wherein: the control chip further comprises a detection pin, the detection pin is electrically connected to the corresponding ground pin of the interface and used for detecting a second voltage of the corresponding ground pin of the interface, and when the control chip detects that the second voltage exceeds a preset threshold value through the detection pin, the control chip determines that the corresponding interface is connected with the charging equipment; when the control chip detects that the second voltage is smaller than the preset threshold value through the detection pin, the control chip determines that the corresponding interface is not connected with the charging device.
5. The power supply device according to claim 4, wherein: the control chip further comprises a multi-port control pin which is electrically connected with a multi-port control pin of an adjacent control chip and is used for outputting a first level when only one interface of the power supply device is connected with the charging equipment; the multi-port control pin is further used for outputting a second level when at least two interfaces of the power supply device are connected with the charging equipment, and the control chip determines the number of the charging equipment connected with the power supply device by detecting the voltage on the multi-port control pin.
6. The power supply device according to claim 4, wherein: the detection pin is further configured to output a second current to generate the second voltage on a corresponding ground pin of the interface, where the second current is smaller than the first current, and the second voltage is smaller than the first voltage.
7. The power supply device according to claim 2, wherein: the power supply unit further comprises a power supply output pin, and the power supply pin of the interface is electrically connected to the power supply output pin and used for receiving the power supply voltage output by the power supply unit.
8. The power supply device according to claim 2, wherein: the power supply unit further comprises a feedback pin, the control chip further comprises a feedback output pin, and the feedback output pin is electrically connected to the feedback pin and used for outputting a control signal so as to control the power supply unit to output the preset voltage to the corresponding charging device.
9. The power supply device according to claim 2, wherein: the control chip further comprises a driving pin, and the driving pin is electrically connected to the first end of the electronic switch through a resistor and used for outputting voltage.
10. The power supply device according to claim 2, wherein: the electronic switch is an NMOS tube, the first end is a grid electrode, the second end is a drain electrode, and the third end is a source electrode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110801481.6A CN113629802B (en) | 2021-07-15 | 2021-07-15 | Power supply device |
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| CN202110801481.6A CN113629802B (en) | 2021-07-15 | 2021-07-15 | Power supply device |
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| CN113629802A true CN113629802A (en) | 2021-11-09 |
| CN113629802B CN113629802B (en) | 2024-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114172247A (en) * | 2022-02-11 | 2022-03-11 | 深圳英集芯科技股份有限公司 | Adapter device and electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863792A (en) * | 2017-10-01 | 2018-03-30 | 深圳市博源电子有限公司 | Charge control method and charger |
| US20190109480A1 (en) * | 2015-05-14 | 2019-04-11 | Mediatek Inc. | Electronic device, charger within the electronic device, and detecting method for detecting abnormal status of connector of electronic device |
| CN110875607A (en) * | 2018-08-29 | 2020-03-10 | 合肥捷达微电子有限公司 | Charging system |
| CN111313515A (en) * | 2020-04-20 | 2020-06-19 | 深圳英集芯科技有限公司 | Multi-output-port fast charging switching circuit and method |
-
2021
- 2021-07-15 CN CN202110801481.6A patent/CN113629802B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190109480A1 (en) * | 2015-05-14 | 2019-04-11 | Mediatek Inc. | Electronic device, charger within the electronic device, and detecting method for detecting abnormal status of connector of electronic device |
| CN107863792A (en) * | 2017-10-01 | 2018-03-30 | 深圳市博源电子有限公司 | Charge control method and charger |
| CN110875607A (en) * | 2018-08-29 | 2020-03-10 | 合肥捷达微电子有限公司 | Charging system |
| CN111313515A (en) * | 2020-04-20 | 2020-06-19 | 深圳英集芯科技有限公司 | Multi-output-port fast charging switching circuit and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114172247A (en) * | 2022-02-11 | 2022-03-11 | 深圳英集芯科技股份有限公司 | Adapter device and electronic device |
| CN114172247B (en) * | 2022-02-11 | 2022-05-17 | 深圳英集芯科技股份有限公司 | Adapter device and electronic device |
| WO2023151569A1 (en) * | 2022-02-11 | 2023-08-17 | 深圳英集芯科技股份有限公司 | Adapter device and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113629802B (en) | 2024-04-05 |
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