CN103855438A - Charging method and electronic equipment - Google Patents
Charging method and electronic equipment Download PDFInfo
- Publication number
- CN103855438A CN103855438A CN201210514731.9A CN201210514731A CN103855438A CN 103855438 A CN103855438 A CN 103855438A CN 201210514731 A CN201210514731 A CN 201210514731A CN 103855438 A CN103855438 A CN 103855438A
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- storage device
- power supply
- electrical storage
- electronic equipment
- circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The application discloses a charging method and electronic equipment. The method is applied to the electronic equipment which is charged through a power adapter and comprises a charging circuit. The method comprises the following steps: receiving a first power supply output by the power adapter; converting the first power supply into a second power supply through the charging circuit, wherein the second voltage value of the second power supply is lower than the first voltage value of the first power supply; charging an electrical storage device in the electronic equipment by the second power supply, wherein the electrical storage device is connected with the charging circuit; and when the voltage value of the electrical storage device is equal to the first voltage value, starting a first switch circuit connected with the electrical storage device to enable the electronic equipment to be powered on for working.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of charging method and a kind of electronic equipment.
Background technology
Current electronic equipment, such as notebook computer, or AIO, in the time inserting adapter or power supply unit and charge, all can pass through following flow process:
Adapter can be communicated with mainboard, and first transmit electric current or voltage source enters the first switching circuit in mainboard, and give the electrical storage device being connected in the first switching circuit charging by the first switching circuit, and now, electrical storage device has the effect of voltage stabilizing, when charging completes, when magnitude of voltage that the magnitude of voltage on electrical storage device is poured in adapter is consistent, can make electronic equipment work on power.
And because electrical storage device has the function of handing over every straight-through, therefore, in the time inserting the moment of adapter or power supply unit, the large voltage producing or large electric current may be made electrical storage device isolation, and then make the magnitude of voltage of electrical storage device raise so that burn, and further, the magnitude of voltage of rising can be back to the first switching circuit by input circuit, causes the part on the first switching circuit to burn.
As shown in Figure 1, for the johning knot composition of adapter 09 and mainboard 10, wherein, mainboard 10 has comprised the first switching circuit 101, the electrical storage device 102 being connected with the first switching circuit 101, and other functional chips 103 that are connected with electrical storage device 102, wherein, one end of electrical storage device 102 connects first switching circuit 101 and other functional chips 103, the other end ground connection of electrical storage device 102.And more specifically, in the time that electronic equipment insertion adapter 09 charges, 09 of adapter can be connected with the first switching circuit 101.
In the time that electronic equipment has above-mentioned annexation; first; can pour in large voltage or large electric current to the first switching circuit 101 by adapter 09; and pour in electrical storage device 102 by the first switching circuit 101; charge to electrical storage device 102; in the time that the magnitude of voltage of the magnitude of voltage in electrical storage device 102 and adapter 09 is consistent, to the electronic equipment operation that powers on, protect the safety of electronic equipment with this.
And further, because electrical storage device 102 has the function of handing over every straight-through, therefore, in the time charging to electrical storage device 102, the electric current that moment pours in can exceed the bearing value of electrical storage device 102, and then burns out electrical storage device 102.
And further, in the time that electrical storage device 102 carries out every straight-through friendship, the electric current being stopped by electrical storage device 102 can reflux to the first switching circuit 101, and then causes the part on the first switching circuit 101 to burn.
In order to solve this technical problem; available technology adopting on the first switching circuit 101, add an electrical storage device 102 and/or resistance coupled circuit control the ON time of the first switching circuit 101; to reach the inrush current and the voltage that reduce moment; such as access some resistance between the first switching circuit 101 and the device of connection; by point compression functions of resistance; absorb the voltage that moment pours in; to reduce the charge volume of electrical storage device 102; electrical storage device 102 can not burnt out by instantaneous, and further protect the device on the first switching circuit 101.
And the applicant is in the process that realizes the application, in discovery prior art, at least there is following technical problem:
The coupled circuit that prior art adopts, due to the parameter of device in coupled circuit and and the deficiency of layout, can not ensure the large electric current of moment and the device that voltage does not burn the first switching circuit 101 and is connected greatly completely.
Therefore the technical problem that, prior art exists is: the circuit of prior art can not ensure completely to solve the large electric current of moment and greatly voltage do not burn the first switching circuit 101 and the technical problem of the device that is connected.
Summary of the invention
The invention provides a kind of charging method and a kind of electronic equipment, the technical problem of not burning the device of the first switching circuit and connection in order to solve large electric current that can not ensureing completely of existing in prior art solve moment and large voltage.
On the one hand, the present invention, by the application's a embodiment, provides following technical scheme:
A kind of charging method, described method is applied to electronic equipment, and described electronic equipment charges by power supply adaptor, and described electronic equipment comprises a charging circuit, and described method comprises: receive the first power supply of exporting by described power supply adaptor; By described charging circuit, described the first power supply is converted to second source, wherein, the second voltage value of described second source is less than the first magnitude of voltage of described the first power supply; Use second source to the electrical storage device charging in described electronic equipment, described electrical storage device is connected with described charging circuit; In the time that the magnitude of voltage of described electrical storage device reaches described the first magnitude of voltage, open the first switching circuit being connected with described electrical storage device, so that described electronic equipment can work on power.
Preferably, describedly by described charging circuit, described the first power supply is converted to second source, is specially: by described charging circuit, described the first power supply is carried out to voltage division processing, described the first power supply is converted to second source.
Preferably, after the first switching circuit being connected with described electrical storage device in described unlatching, described method also comprises: close the second switch circuit that described charging circuit comprises, described charging circuit is quit work.
Preferably, described electrical storage device is specially electric capacity.
On the other hand, the present invention provides by another embodiment of the application:
A kind of electronic equipment, described electronic equipment can charge by power supply adaptor, and described electronic equipment comprises: charging circuit, for receiving the first power supply of exporting by described power supply adaptor; Described charging circuit, for described the first power supply is converted to second source, wherein, the second voltage value of described second source is less than the first magnitude of voltage of described the first power supply; Electrical storage device, is connected with described charging circuit, charges for receiving described second source; The first switching circuit, the first end of described the first switching circuit is connected with described charging circuit, the second end of described the first switching circuit is connected with described electrical storage device, for opening in the time that the magnitude of voltage of described electrical storage device reaches described the first magnitude of voltage, and then described electronic equipment can be worked on power.
Preferably, described charging circuit is specifically for being converted to second source by dividing potential drop by described the first power supply.
Preferably, described charging circuit also comprises a second switch circuit, for after opening the first switching circuit being connected with described electrical storage device, closes described charging circuit.
Preferably, described electrical storage device is specially electric capacity.
Preferably, described charging circuit specifically comprises: the first resistance, comprise first end and the second end, and wherein, the second end of described the first resistance connects the first end of described second switch circuit; The second resistance, the first end of described the second resistance is connected with the first end of the first resistance, and is jointly connected with the first end of the first switching circuit, and the second end of described the second resistance is connected with the second end of second switch circuit, and is jointly connected with described electrical storage device.
Preferably, described second switch circuit is specially triode or metal-oxide-semiconductor.
One or more technical schemes in technique scheme, have following technique effect or advantage:
In one or more embodiment of the present invention, a kind of charging method and a kind of electronic equipment have been described, wherein, in the time that adapter charges to electronic equipment, by charging circuit, the first power supply of adapter output is converted to the second source lower than the first power supply, then use second source to charge to electrical storage device, make to be filled with can not can the instantaneous electrical storage device that is full of of power supply of electrical storage device, and then can avoid in the time inserting the moment of adapter or power supply unit, the large voltage producing or large electric current may be made electrical storage device isolation, and then efficiently solve can not ensureing completely of existing in prior art and solve the large electric current of moment and the technical problem that large voltage does not burn the device of the first switching circuit and connection, and then realize and can protect the device of the first switching circuit and connection not burnt, reach the technique effect of safe charging.
Brief description of the drawings
Fig. 1 is the syndeton schematic diagram for adapter 09 and mainboard 10 in background technology;
Fig. 2 be in the embodiment of the present application, there is charging circuit 104 after, the syndeton schematic diagram of adapter 09 and mainboard 10;
Fig. 3 is the flow chart of charging method in the embodiment of the present application;
Fig. 4 is the syndeton schematic diagram of the practical devices in charging circuit 104 and adapter 09 and mainboard 10 in the embodiment of the present application.
Embodiment
Can not ensure to solve the large electric current of moment and the technical problem that large voltage does not burn the device of the first switching circuit and connection completely for what solve that the prior art that exists in prior art exists, the embodiment of the present invention has proposed a kind of charging method and a kind of electronic equipment, and its solution general thought is as follows:
In this application, a kind of charging method and a kind of electronic equipment are provided, further, this electronic equipment charges by power supply adaptor, and electronic equipment comprises a charging circuit, wherein, the method comprises: receive the first power supply of exporting by power supply adaptor.Then by charging circuit, the first power supply is converted to second source, wherein, the second voltage value of second source is less than the first magnitude of voltage of the first power supply.Then, use second source to the electrical storage device charging in electronic equipment, electrical storage device is connected with charging circuit.Finally, in the time that the magnitude of voltage of electrical storage device reaches the first magnitude of voltage, open the first switching circuit being connected with electrical storage device, so that electronic equipment can work on power.
The charging method using in the application, by charging circuit, the first power supply being converted to second source charges, the second source that is converted to lower voltage value charges to electrical storage device, make to be filled with can not can the instantaneous electrical storage device that is full of of power supply of electrical storage device, and then can avoid in the time inserting the moment of adapter or power supply unit, the large voltage producing or large electric current may be made electrical storage device isolation, and then solve the technical problem that large electric current that can not ensureing completely of existing in prior art solve moment and large voltage do not burn the device of the first switching circuit and connection, and then realize and can protect the device of the first switching circuit and connection not burnt, reach the technique effect of safe charging.
Below in conjunction with Figure of description, the embodiment of the present invention main realized to principle, specific implementation process and the beneficial effect that should be able to reach is explained in detail.
Embodiment mono-:
In the embodiment of the present application, a kind of charging method is disclosed.
Further, the method is applied to electronic equipment.
Further, this electronic equipment charges by power supply adaptor.
Further, electronic equipment comprises a charging circuit.
Below, the annexation between above-mentioned each device is introduced.
As shown in Figure 2, the mainboard 10 of this electronic equipment comprises the first switching circuit 101, the electrical storage device 102 being connected with the first switching circuit 101, and other functional chips 103 that are connected with electrical storage device 102, and in addition, this electronic equipment has also comprised charging circuit 104.
Further, one end of this charging circuit 104 is connected between the first switching circuit 101 and adapter 09, and the other end of charging circuit 104 is connected between electrical storage device 102 and other functional chips 103.
More specifically, this electronic equipment is connected with mainboard 10 by adapter 09, and charges to electronic equipment by adapter 09.
Outside the concrete syndeton of having introduced electronic equipment, introduce the specific implementation process of this charging method below.
As shown in Figure 3, the method comprises:
S301, receives the first power supply of exporting by power supply adaptor 09.
S302, is converted to second source by charging circuit 104 by the first power supply.
S303, uses second source to charge to the electrical storage device 102 in electronic equipment, and electrical storage device 102 is connected with charging circuit 104.
S304, in the time that the magnitude of voltage of electrical storage device 102 reaches the first magnitude of voltage, opens the first switching circuit 101 being connected with electrical storage device 102, so that electronic equipment can work on power.
Further, in S302, the second voltage value of second source is less than the first magnitude of voltage of the first power supply.
And more specifically, in S302, being specially is, by charging circuit 104, the first power supply is carried out to voltage division processing, the first power supply is converted to second source.
And more specifically, after opening the first switching circuit 101, also there is processing method: the second switch circuit that charge closing circuit 104 comprises, quits work charging circuit 104.
Further, in actual applications, electrical storage device 102 can be multiple device, such as inductance, and electric capacity, and in the embodiment of the present application, electrical storage device 102 is specially electric capacity.
Above-described charging method, in the time that adapter 09 charges to electronic equipment, the first power supply of adapter 09 being exported by charging circuit 104 is converted to the second source lower than the first power supply, then use second source to charge to electrical storage device 102, make to be filled with can not can the instantaneous electrical storage device 102 that is full of of power supply of electrical storage device 102, and then can avoid in the time inserting the moment of adapter 09 or power supply unit, the large voltage producing or large electric current may be made electrical storage device 102 isolate, and then efficiently solve can not ensureing completely of existing in prior art and solve the large electric current of moment and the technical problem that large voltage does not burn the device of the first switching circuit and connection, and then can protect the device of the first switching circuit 101 and connection not burnt, reach the object of safe charging.
Charging method in the embodiment of the present application is carried out to complete description below.
First, in the time that electronic device docking enters adapter 09 and charges, adapter 09 can provide the first power supply by the instantaneous mainboard 10 for electronic equipment, and concrete, this first power supply has the first magnitude of voltage.
Further, because now the first switching circuit 101 is in closed condition, therefore this first power supply can arrive charging circuit 104.
Further, charging circuit 104 can be converted to second source by the first power supply, and the magnitude of voltage of second source is less than the first magnitude of voltage.
Further, after being converted to second source, this second source can be filled with to electrical storage device 102.
Now, owing to using second source to charge to electrical storage device 102, make to be filled with can not can the instantaneous electrical storage device 102 that is full of of power supply of electrical storage device 102, and then can avoid in the time inserting the moment of adapter 09 or power supply unit, the large voltage producing or large electric current may be made electrical storage device 102 isolate, and then the situation appearance that makes the magnitude of voltage of electrical storage device 102 raise so that burn.
Further, when the second source of storage in electrical storage device 102 has reached the first magnitude of voltage, the magnitude of voltage balance at the first switching circuit 101 two ends is described.
Further, in the time of the magnitude of voltage balance at the first switching circuit 101 two ends, can open the first switching circuit 101, and, because the magnitude of voltage at the first switching circuit 101 two ends is in poised state, therefore can not burn out the first switching circuit 101.
Can charge closing circuit 104 in the time that the first switching circuit 101 is opened, and then the first power supply that adapter 09 provides can be by the first switching circuit 101 to electronic equipment power supply, the operation so that electronic equipment powers on.
In the above embodiments, introduce the specific implementation process of charging method, in the following examples, can introduce electronic equipment corresponding to the method.
Embodiment bis-:
In the embodiment of the present application, provide a kind of electronic equipment.
Further, this electronic equipment can charge by power supply adaptor 09.
As shown in Figure 4, be the practical devices of charging circuit and the connection diagram of other devices.
Second switch device in Fig. 4 uses metal-oxide-semiconductor to give an example, and electrical storage device 102 use electric capacity are given an example.
Further, electronic equipment comprises: charging circuit 104, electrical storage device 102, the first switching circuits 101.
The concrete annexation of the above-mentioned device of electronic equipment as shown in Figure 2, the mainboard 10 of this electronic equipment comprises the first switching circuit 101, the electrical storage device 102 being connected with the first switching circuit 101, and other functional chips that are connected with electrical storage device 102, and in addition, this electronic equipment has also comprised charging circuit 104.
Further, one end of this charging circuit 104 is connected between the first switching circuit 101 and adapter 09, and the other end of charging circuit 104 is connected between the first switching circuit 101 and electrical storage device 102.
More specifically, this electronic equipment is connected with mainboard 10 by adapter 09, and charges to electronic equipment by adapter 09.
Below, the concrete function of each device is described.
The first switching circuit 101, is connected with electrical storage device 102, for opening in the time that the magnitude of voltage of electrical storage device 102 reaches the first magnitude of voltage, and then electronic equipment can be worked on power.
Further, charging circuit 104 is specifically for being converted to second source by dividing potential drop by the first power supply.
Further, charging circuit 104 also comprises a second switch circuit 4011, for after opening the first switching circuit 101 being connected with electrical storage device 102, and charge closing circuit 104.
Further, electrical storage device 102 is specially electric capacity.
And more specifically, the concrete structure of charging circuit 104 is in the embodiment of the present application as follows:
Wherein, the first resistance 4012, comprises first end and the second end, and wherein, the second end of the first resistance 4012 connects the first end of second switch circuit 4011.
The first end of the second resistance 4013, the second resistance 4013 is connected with the first end of the first resistance 4012, and is jointly connected with the first end of the first switching circuit 101.
Further, the second end of the second resistance 4013 is connected with the second end of second switch circuit 4011, and is jointly connected between electrical storage device 102 and other functional chips.
Further, second switch circuit 4011 can be triode or metal-oxide-semiconductor.
Give an example when second switch device 1041 uses metal-oxide-semiconductor, electrical storage device 102 use electric capacity are given an example.
As shown in Figure 4, the second end of the first resistance 4012 connects the D utmost point of metal-oxide-semiconductor, and the second end of the second resistance 4013 connects the G utmost point of metal-oxide-semiconductor, and is jointly connected between electric capacity 102 and other functional chips 103.
Further, the S utmost point of metal-oxide-semiconductor is connected between electric capacity 102 and other functional chips 103.
By one or more embodiment of the present invention, can be achieved as follows technique effect:
In one or more embodiment of the present invention, a kind of charging method and a kind of electronic equipment have been described, wherein, in the time that adapter charges to electronic equipment, by charging circuit, the first power supply of adapter output is converted to the second source lower than the first power supply, then use second source to charge to electrical storage device, make to be filled with can not can the instantaneous electrical storage device that is full of of power supply of electrical storage device, and then can avoid in the time inserting the moment of adapter or power supply unit, the large voltage producing or large electric current may be made electrical storage device isolation, and then efficiently solve can not ensureing completely of existing in prior art and solve the large electric current of moment and the technical problem that large voltage does not burn the device of the first switching circuit and connection, and then realize and can protect the device of the first switching circuit and connection not burnt, reach the technique effect of the object of safe charging.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a charging method, described method is applied to electronic equipment, and described electronic equipment charges by power supply adaptor, it is characterized in that, and described electronic equipment comprises a charging circuit, and described method comprises:
Receive the first power supply of exporting by described power supply adaptor;
By described charging circuit, described the first power supply is converted to second source, wherein, the second voltage value of described second source is less than the first magnitude of voltage of described the first power supply;
Use second source to the electrical storage device charging in described electronic equipment, described electrical storage device is connected with described charging circuit;
In the time that the magnitude of voltage of described electrical storage device reaches described the first magnitude of voltage, open the first switching circuit being connected with described electrical storage device, so that described electronic equipment can work on power.
2. the method for claim 1, is characterized in that, describedly by described charging circuit, described the first power supply is converted to second source, is specially:
By described charging circuit, described the first power supply is carried out to voltage division processing, described the first power supply is converted to second source.
3. the method for claim 1, is characterized in that, after the first switching circuit being connected with described electrical storage device in described unlatching, described method also comprises:
Close the second switch circuit that described charging circuit comprises, described charging circuit is quit work.
4. the method for claim 1, is characterized in that, described electrical storage device is specially electric capacity.
5. an electronic equipment, described electronic equipment can charge by power supply adaptor, it is characterized in that, and described electronic equipment comprises:
Charging circuit, for receiving the first power supply of exporting by described power supply adaptor;
Described charging circuit, for described the first power supply is converted to second source, wherein, the second voltage value of described second source is less than the first magnitude of voltage of described the first power supply;
Electrical storage device, is connected with described charging circuit, charges for receiving described second source;
The first switching circuit, the first end of described the first switching circuit is connected with described charging circuit, the second end of described the first switching circuit is connected with described electrical storage device, for opening in the time that the magnitude of voltage of described electrical storage device reaches described the first magnitude of voltage, and then described electronic equipment can be worked on power.
6. electronic equipment as claimed in claim 5, is characterized in that, described charging circuit is specifically for being converted to second source by dividing potential drop by described the first power supply.
7. electronic equipment as claimed in claim 5, is characterized in that, described charging circuit also comprises a second switch circuit, for after opening the first switching circuit being connected with described electrical storage device, closes described charging circuit.
8. electronic equipment as claimed in claim 5, is characterized in that, described electrical storage device is specially electric capacity.
9. electronic equipment as claimed in claim 5, is characterized in that, described charging circuit specifically comprises:
The first resistance, comprises first end and the second end, and wherein, the second end of described the first resistance connects the first end of described second switch circuit;
The second resistance, the first end of described the second resistance is connected with the first end of the first resistance, and is jointly connected with the first end of the first switching circuit, and the second end of described the second resistance is connected with the second end of second switch circuit, and is jointly connected with described electrical storage device.
10. electronic equipment as claimed in claim 7, is characterized in that, described second switch circuit is specially triode or metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514731.9A CN103855438B (en) | 2012-12-04 | 2012-12-04 | A kind of charging method and a kind of electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514731.9A CN103855438B (en) | 2012-12-04 | 2012-12-04 | A kind of charging method and a kind of electronic equipment |
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| CN103855438A true CN103855438A (en) | 2014-06-11 |
| CN103855438B CN103855438B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210514731.9A Active CN103855438B (en) | 2012-12-04 | 2012-12-04 | A kind of charging method and a kind of electronic equipment |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090127935A1 (en) * | 2007-11-15 | 2009-05-21 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Power supply system and protection method |
| CN102573211A (en) * | 2010-11-15 | 2012-07-11 | 凹凸电子（武汉）有限公司 | System, control circuit and method for supplying electric power to LED light source |
-
2012
- 2012-12-04 CN CN201210514731.9A patent/CN103855438B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090127935A1 (en) * | 2007-11-15 | 2009-05-21 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Power supply system and protection method |
| CN102573211A (en) * | 2010-11-15 | 2012-07-11 | 凹凸电子（武汉）有限公司 | System, control circuit and method for supplying electric power to LED light source |
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| CN103855438B (en) | 2016-04-27 |
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