CN106469925B - Has the USB method of supplying power to of protection mechanism - Google Patents
Has the USB method of supplying power to of protection mechanism Download PDFInfo
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- CN106469925B CN106469925B CN201610213101.6A CN201610213101A CN106469925B CN 106469925 B CN106469925 B CN 106469925B CN 201610213101 A CN201610213101 A CN 201610213101A CN 106469925 B CN106469925 B CN 106469925B
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- power
- receiving device
- voltage
- power receiving
- supply unit
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000007547 defect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
-
- H02J2007/0067—
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
-
- 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
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
Abstract
The present invention provides a kind of USB method of supplying power to for having protection mechanism, applies to power supply unit and power receiving device that electric power is transmitted by USB interface.USB method of supplying power to of the invention includes the following steps: to be followed by receiving the identity information of electric installation reply in connection；Judge power receiving device whether in the protection list of power supply unit according to identity information；The available voltage and current combination of optimum operating voltage adjustment power supply unit if power receiving device exists in protection list, according to power receiving device；And it transmits voltage and current adjusted and is incorporated into power receiving device.
Description
Technical field
The present invention relates to a kind of USB method of supplying power to more particularly to a kind of USB method of supplying power to for having protection mechanism.
Background technique
Since USB interface has the characteristic of hot plug, and it can provide stable electric power output (such as 2.0 interface of USB
Can provide the electric power output of 5V/0.5A), therefore, many lesser electronic devices of electricity needs, such as intelligent mobile device,
Box etc. on MP3 walkman, machine all given up traditional power connection (DC-Jack), and directly carries out electricity with USB connector
Power transmission.
Recently, USB development organizations develop new USB Type-C interface for 3.1 specification of USB.Also, in order to logical
Crossing the enough electric power of USB interface offer gives electricity needs biggish electronic device, such as tablet computer, laptop even electricity
Brain screen etc., USB development group know USB power transmission specification (USB the Power Delivery, USB that also hair outputs a new generation
PD)。
The output voltage of multisection type can be supported by supporting the USB Type-C connector of USB PD specification, for example, 5V, 12V and
The multiple voltages such as 20V.Also, the adjustment for cooperating output electric current again, so that USB Type-C connector maximum can provide 100W
The output power of (20V/5A).
In view of the convenience of USB PD, there are many biggish electronic devices of electricity needs (such as laptop) at present
USB Type-C connector is used instead one after another to carry out power transmission.Only, if the firmware of those electronic devices is not directed to USB
The characteristic of PD and be updated, it would be possible to so that power supply unit provides unsuitable output power electron device, and lead to electricity
The damage of sub-device.
Specifically, the firmware of section electronics is receiving power supply unit (such as power supply unit (Power
Supply after electricity needs inquiry)), the maximum option of electric power can be directly selected, to which charging operation can be rapidly completed.Only,
As described above, USB PD specification enables USB Type-C connector maximum can provide the voltage output of 20V, may be filled beyond electronics
The optimum operating voltage set.In in this case, if the firmware of electronic device still unconditionally selects after receiving electricity needs inquiry
The available maximum power of power supply unit is selected, then electronic device may be burned out.
Furthermore the power source of most electronic devices can be power supply unit or battery, and pass through battery institute
Allowing received upper voltage limit that can be greater than allows received upper voltage limit by power supply unit (but electronic device can downgrade electricity
The output electric current in pond, the received electric power to stablize).Therefore, if the firmware of electronic device is not by updating, in reception electric power
Demand can not distinguish that issuing the power supply unit of electricity needs inquiry is power supply unit or battery when inquiring, and then select discomfort
When output power, also may be such that electronic device generates mistake during the charging process.
Summary of the invention
The main object of the present invention, is to provide a kind of USB method of supplying power to for having protection mechanism, and avoidable power supply unit mentions
For beyond power receiving device optimum operating voltage electric power to power receiving device.
Reach above-mentioned purpose, the present invention provide the power supply unit that applies to transmit electric power by USB interface with one by
The USB method of supplying power to of electric installation.The USB method of supplying power to includes the following steps: to receive the one of power receiving device reply after connection
Identity information；Judge the power receiving device whether in a protection list of the power supply unit according to the identity information；If should be by electricity
Device then adjusts the available voltage of the power supply unit according to the optimum operating voltage of the power receiving device there are in the protection list
Currents combination；It transmits voltage and current adjusted and is incorporated into the power receiving device.
The present invention compares the attainable technical effect of the relevant technologies institute and is, power supply unit provide stable electric power to by
Before electric installation, the optimum operating voltage of power receiving device can be first confirmed, and delete in the option of offer and exceed power receiving device
Optimum operating voltage it is too many voltage/current combination.In this way, power receiving device is when requiring required electric power, Wu Fayao
Ask power receiving device can not load voltage/current combination, can effectively avoid whereby cause because of tough volume defect power receiving device with
The risk damaged or burnt after power supply unit connection.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1 is the electrical schematic of the first specific embodiment of the invention.
Fig. 2 is the power supply flow chart of the first specific embodiment of the invention.
Fig. 3 is that the voltage and current group of the first specific embodiment of the invention adjusts flow chart.
Fig. 4 A is the first power supply flow chart of the second specific embodiment of the invention.
Fig. 4 B is the second power supply flow chart of the second specific embodiment of the invention.
Fig. 5 is the power supply flow chart of the second specific embodiment of the invention.
Fig. 6 A is the first power supply flow chart of third specific embodiment of the invention.
Fig. 6 B is the second power supply flow chart of third specific embodiment of the invention.
Fig. 7 is that the voltage and current group of the second specific embodiment of the invention adjusts flow chart.
Wherein, appended drawing reference
1 ... power supply unit
11 ... attaching plugs
12 ... USB Type-C connector male heads
2 ... power receiving devices
21 ... USB Type-C connector female ends
S10~S21 ... energizing step
S100~S117 ... set-up procedure
S30~S47 ... energizing step
S50~S65 ... energizing step
S500~S510 ... set-up procedure
Specific embodiment
Technical solution of the present invention is described in detail in the following with reference to the drawings and specific embodiments, to be further understood that
The purpose of the present invention, scheme and effect, but it is not intended as the limitation of scope of the appended claims of the present invention.
It refering to fig. 1, is the electrical schematic of the first specific embodiment of the invention.The invention discloses a kind of tool protection mechanisms
USB method of supplying power to (the hereinafter simply referred to as method of supplying power to), which mainly applies to a power supply unit 1 and one by Denso
2 are set, the power supply unit 1 and the power receiving device 2 are by supporting USB power transmission specification (Power Delivery, USB PD)
The connection of USB Type-C interface.
Specifically, as shown in Figure 1, the power supply unit 1 is a power supply unit (Power Supply) in the present embodiment, and
The power receiving device 2 is a laptop, but is not limited.In other embodiments, which, which may be, for example, meets
The mancarried device (Portable Device) of USB PD specification.There is a power supply of connection alternating current to insert for 1 one end of power supply unit
First 11, the other end has a USB Type-C connector male head 12.A USB Type-C connector is provided on the power receiving device 2
Female 21.In the present embodiment, the USB Type-C connector male head 12 and the USB Type-C connector female end 21 all support USB
PD specification.
The power supply unit 1 connects the USB Type-C of the power receiving device 2 by the USB Type-C connector male head 12
Connector female end 21, and the collocation channel terminal (Configuration in the USB Type-C connector male head 12
Channel pin, CC pin) sense another collocation channel terminal in the USB Type-C connector female end 21 after, the confession
Electric installation 1 can begin through the other termination in the USB Type-C connector male head 12 and the USB Type-C connector female end 21
Son supplies electricity to the power receiving device 2.
It is noted that the method for supplying power to of the invention can be used in the power receiving device 2 with special defect, use
The power receiving device 2 is avoided to damage or burn after receiving excessively high charging voltage level.More specifically, the defect refer to this by
Electric installation 2 may require that the power supply unit 1 provides defect of the voltage beyond the too many electric power of an optimum operating voltage.For example, should be by
The optimum operating voltage of electric installation 2 is 14.8V, but the charging voltage requested to power supply unit of power receiving device 2 level (such as
It could possibly be higher than the level (for example, above-mentioned 14.8V) of optimum operating voltage for 20V).Therefore the power receiving device 2 may be because excessively high
Charging voltage level (for example, 20V) damage or burn.In view of this defect, if the power supply unit 1 is not by this hair
The bright method of supplying power to is powered, it would be possible to be burnt the power receiving device 2 after starting power supply, or be enabled the power receiving device 2
It can not normal operation.
Referring to Fig.2, being the power supply flow chart of the first specific embodiment of the invention.Realize the supplier of electricity of the invention
Method firstly, the power supply unit 1 connects the power receiving device 2, and detects that the USB Type-C connector of the power receiving device 2 is female
Collocation channel terminal (step S10) in first 21, to confirm successful connection.It is noted that when connecting the power receiving device 2
When, which can provide the power receiving device 2 one mark through voltage bus (VBus) pin of USB Type-C interface immediately
Quasi- power supply, for the use of power receiving device 2.Above-mentioned standard power supply can be 5 volts of voltage, and maximum current is the power supply of 500 milliamperes.
After confirming successful connection, which sends identity inquiry instruction (Discover Identity) first
To the power receiving device 2 (step S11), and then receives the power supply unit 1 and instruct replied the whole body according to identity inquiry
Part inquiry return signal (Discover Identity ACK) (step S12).In the present invention, which inquires return signal extremely
Less including the power receiving device 2 supplier's identification code (Vendor ID, VID) and a product ID (Product ID,
PID), but it is not limited.
After the power supply unit 1 receives identity inquiry return signal, identity inquiry return signal is decoded to take
Supplier's identification code and the product ID out.Then, which can know according to supplier's identification code and the product
Other code judges whether the power receiving device 2 is recorded in a protection list of the power supply unit 1 (step S13).It, should in the present invention
Supplier's identification code, the product ID and the optimum operating voltage of the list essential record power receiving device 2 are protected, such as
Shown in following table one, but it is not limited.
Table one
If the power supply unit 1 judges that the power receiving device 2 is not recorded in the protection list in step S13, indicate
The power receiving device 2 is not (for example, the power supply unit 1 has drawbacks described above, no in the preset protection scope of power supply unit 1
The method of supplying power to through the invention is needed to be protected).
From the above, in this case, the power supply unit 1 generates complete electric power selection inventory (step S14), wherein
Electric power selection inventory records the supported all voltage/current combinations of the power supply unit 1.In the present embodiment, the power supply unit 1
The voltage/current such as 5V/3A, 12V/3A, 15V/3A and 20V/2.25A can be supported to combine altogether, therefore complete electric power choosing
Select the voltage/current combination that 5V/3A, 12V/3A, 15V/3A and 20V/2.25A are had recorded in inventory.Only, in other embodiments
In, which can also support 5V/2A (10W), 12V/1.5A (36W), 12V/5A (60W), 20V/3A (60W), 20V/5A
The voltage/current of (100W) etc. combines, and is not limited.
If judging in step S13, the power receiving device 2 is recorded in the protection list, 1 foundation of power supply unit
The optimum operating voltage of the power receiving device 2 combines (step to adjust the voltage/current recorded in electric power selection inventory
S15).After step S14 or step S15, the power supply unit 1 transmit complete electric power selection inventory or it is adjusted should
Electric power selects inventory to the power receiving device 2 (Source Capabilities) (step S16).
It is noted that the power supply unit 1 is mainly the supplier according to the power receiving device 1 in above-mentioned steps S15
Identification code and the product ID obtain the optimum operating voltage of the power receiving device 1, also, clear in complete electric power selection
Deleted in list voltage beyond the optimum operating voltage and a tolerance value and voltage/current combine.In a preferred embodiment,
The tolerance value can be 0.5V, and but not limited to this.
For example, if the optimum operating voltage of the power receiving device 2 is 14.8V, 5V/3A, 12V/3A and 15V/3A
Voltage/current group credit union be retained in the electric power adjusted selection inventory (because of 5V < 15.3V, 12V < 15.3V, 15V <
15.3V), and the voltage/current group credit union of 20V/2.25A is deleted (because 20V > 15.3V).In other words, when this is by Denso
After setting the 2 receptions electric power adjusted selection inventory, the electric power of 20V/2.25A can not be required, therefore there will not be and be burned out
Risk.
After step S16, the power supply unit 1 can receive the power receiving device 2 require (Request) a specific voltage/
Currents combination (step S17), and after determining that specific voltage/currents combination requirement is errorless (such as the power supply unit 1 is true
Specific voltage/the currents combination can be supported in fact), transmission one handshaking signal (Accept) to the power receiving device 2 (step S18).It should
After step S18, which switches to the confession for meeting the power receiving device 2 and requiring by 5 volts of voltages of primary standard power supply immediately
Piezoelectric voltage (that is, corresponding to the above-mentioned specific voltage/currents combination) (step S19), and steady is transmitted after the completion of switching
Signal (Power Supply Ready, PS_Rdy) is completed to the power receiving device 2 (step S20).
The power supply unit 1 is persistently to supply the power receiving device 2 on VBus pin after above-mentioned step S10
Electricity.And after the new electrical power demand (Request) for receiving (Accept) power receiving device 2 each time, that is, start switching electricity
Pressure, and within the time of USB PD specification, meet the supply voltage of 2 latest requirement of power receiving device and transmits PS_Rdy, hereafter,
The power supply unit 1 can continue to export the electric power of the requirement to the power receiving device 2 (step S21).It is noted that this is for Denso
1 is set after the step S50 of the step S30 and Fig. 6 A of subsequent figure 4A, equally follows the switching that aforesaid way is powered voltage
With the offer of electric power.
It is that the voltage and current group of the first specific embodiment of the invention adjusts flow chart refering to Fig. 3.When the power supply unit 1
In above-mentioned steps S12 supplier's identification code for obtaining the power receiving device 2 and (step S100) after the product ID, can first sentence
Supplier's identification code of breaking is why, such as shown in Fig. 3, judge supplier's identification code whether be 0xV001 (step S101),
0xV002 (step S102), 0xV009 (step S103) etc. are recorded in the identification code in the protection list.If the supplier identifies
Code is not present in the protection list, then the power supply unit 1 directly transmits complete electric power selection inventory to the power receiving device 2
(step S104).
If supplier's identification code is there are in the protection list, which further judges the product ID
Why, it is adjusted with the content to electric power selection inventory.
In the embodiment of Fig. 3, if supplier's identification code is 0xV001, the power supply unit 1 is in the product ID
In the case where for 0xP001 (step S105), adjust the electric power select the content of inventory for including 5V/3A, 12V/3A, 15V/3A,
The voltage/current of 20V/2.25A combines (step S106)；In the case where the product ID is 0xP002 (step S107),
Adjusting the electric power selects the content of inventory to combine (step S108) for the voltage/current including 5V/3A, 12V/3A, 15V/3A；?
The product ID be 0xP003 in the case where (step S109), adjust the electric power select the content of inventory for including 5V/3A,
The voltage/current of 12V/3A combines (step S110).
If supplier's identification code is 0xV002, the power supply unit 1 is in the case where the product ID is 0xP011
(step S111) adjusts the electric power and selects the content of inventory for the voltage/current combination including 5V/3A, 12V/3A, 15V/3A
(step S112)；In the case where the product ID is 0xP012 (step S113), the content of electric power selection inventory is adjusted
It is the voltage/current combination (step S114) for including 5V/3A, 12V/3A.If supplier's identification code is 0xV009 and the product
Identification code is 0xP091 (step S115), then the power supply unit 1 adjustment electric power selects the content of inventory for the electricity including 5V/3A
Pressure/currents combination (step S116).
Finally, the power supply unit 1 transmits electric power selection adjusted after the content of electric power selection inventory to be determined
Inventory waits the requirement (step S117) of the power receiving device 2 to the power receiving device 2, to carry out above-mentioned step S17 to the step
The movement of rapid S21.
Refering to Fig. 4 A and Fig. 4 B, the first power supply flow chart of the second specific embodiment respectively of the invention and the second power supply
Flow chart.Firstly, the power supply unit 1 connects the power receiving device 2, and detect the USB Type-C connection of the power receiving device 2
Collocation channel terminal (step S30) in device female 21, to confirm successful connection.In the present embodiment, which is being connected
It does not transmit identity inquiry after success directly to instruct to the power receiving device 2, but first transmits initial electrical selection inventory and extremely should
Power receiving device 2 (Source_Capabilities) (step S31), to enable the power receiving device 2 select inventory according to the initial electrical
It is required that one initial voltage/currents combination.Pass through initial voltage/currents combination offer, it can be ensured that the power receiving device 2 can be true
Identity inquiry instruction is received in fact.
In a preferred embodiment, which selects can be only including the single group initial voltage/electric current in inventory
Combination, in other words, which is only capable of requiring the unique one group initial voltage/currents combination.And in a best implementation
In example, which selects only to include one safe voltage/currents combination in inventory, i.e. the voltage/current of 5V/3A combines.By
This, can avoid the power receiving device 2 and directly burnt by the initial electrical.
After step S31, which receives the power receiving device 2 and selects inventory requirements according to the initial electrical
(Request) the initial voltage/currents combination (step S32), and after determining that the initial voltage/currents combination is errorless,
The handshaking signal (Accept) is transmitted to the power receiving device 2 (step S33).After step S33, which will power electric
Crush-cutting shifts to the supply voltage for meeting the inception requirements of the power receiving device 2 (that is, corresponding to the above-mentioned initial specific voltage/electric current
Combination) (step S34), and transmit this after the completion of switching and be ready to complete signal (PS_Rdy) to the 2 (step of power receiving device
S35).After step S35, which can continue to export the initial electrical for meeting the inception requirements to the power receiving device 2
(step S36), wherein the initial electrical is corresponding to the initial voltage/currents combination.
After step S36, step S37 to step S47 shown in the power supply unit 1 i.e. executable Fig. 4 A, Fig. 4 B, with inquiry
The identity of the power receiving device 2 adjusts electric power selection inventory, provides the electric power adjusted according to the identity of the power receiving device 2
Selection inventory is selected for the power receiving device 2, receives selection requirement of the power receiving device 2 to electric power selection inventory, and if
Specific voltage/the currents combination being required then receives the requirement and according to the spy within the scope of the power supply capacity of the power supply unit 1
Constant voltage/currents combination switches supply voltage and continues output power to the power receiving device according to the supply voltage after switching
2.Above-mentioned step S37 to step S47 is identical to step S21 as the step S11 of embodiment shown in FIG. 1, not in this
It repeats again.
It is the power supply flow chart of the second specific embodiment of the invention refering to Fig. 5.The embodiment of Fig. 5 is with the side of time shaft
Process of powering shown in Fig. 4 A, Fig. 4 B is presented in formula.
Select inventory to 2 (Source_ of the power receiving device firstly, the power supply unit 1 transmits the initial electrical
Capabilities), and receive the power receiving device 2 reply receive signal (GoodCrc).Then the power receiving device 2 requirement
(Request) initial voltage/currents combination (5V/3A) and the power supply unit 1 is notified, which then replys and receive letter
Number (GoodCrc).The power supply unit 1 then transmits the handshaking signal (Accept) to the power receiving device 2, and receiving should be by Denso
It sets 2 and receives signal (GoodCrc).
Then, which starts to adjust the voltage/current of the initial electrical.After the completion of adjustment, the power supply unit 1
It transmits this and is ready to complete signal (PS_Rdy) to the power receiving device 2, and receive the power receiving device 2 reply receives signal
(GoodCrc).Finally, the power supply unit 1, which persistently provides the initial electrical, gives the power receiving device 2.
Start after continuing to provide the initial electrical, which transmits identity inquiry instruction (Discover
Identity) to the power receiving device 2, and receive the power receiving device 2 reply receives signal (GoodCrc).It then should be by Denso
Setting 2 replies record has supplier's identification code and the identity of product ID inquiry return signal (Discover
Identity ACK) to the power supply unit 1, which replys after receiving receives signal (GoodCrc) to should by Denso
Set 2.
Then, which confirms the optimum operating voltage of the power receiving device 2, by according to the optimum operating voltage
Adjust the content of electric power selection inventory.After adjustment, which transmits electric power selection inventory (example adjusted
Such as include that 5V/3A, 12V/3A combines with the voltage/current of 15V/3A) to the power receiving device 2, and receive the power receiving device 2 and reply
Receive signal (GoodCrc).The power receiving device 2 is then required (Request) and replys the specific voltage/currents combination
(such as 15V/3A) is replied after reception and is received signal (GoodCrc) to the power supply unit 1, the power supply unit 1.
The power supply unit 1 replys the handshaking signal (Accept) to should be by further directed to the specific voltage/currents combination
Electric installation 2, and receive the power receiving device 2 reply receive signal (GoodCrc).Then, the power supply unit 1 is according to the specific electricity
Pressure/currents combination adjusts the voltage/current of the output power, and transmits this after the completion of adjustment and be ready to complete signal (PS_Rdy)
To the power receiving device 2, then receive the power receiving device 2 reply receive signal (GoodCrc).Finally, the power supply unit 1 continues again
Output meets the output power of the power receiving device 2 requirement to the power receiving device 2.
Refering to Fig. 6 A and Fig. 6 B, the first power supply flow chart of third specific embodiment respectively of the invention and the second power supply
Flow chart.In Fig. 6 A and Fig. 6 B revealed embodiment, which mainly passes through an acquirement receiving end capability instruction
(Get_Sink_Capabilities) come adjust the electric power selection inventory content.Only, in this present embodiment, the power supply unit 1
The acquirement receiving end capability instruction can be directly transmitted after connecting the power receiving device 2 to the power receiving device 2 (that is, not executing Fig. 6 A
Shown step S51 to step S56), or first provide the initial electrical to the power receiving device 2 and ensure that the power receiving device 2 can
(that is, executing step S51 to step S56) shown in Fig. 6 A, then to transmit the acquirement receiving end ability and refer to after normally receiving instruction
It enables to the power receiving device 2, is not limited.
As shown in Figure 6A, firstly, the power supply unit 1 connects the power receiving device 2, and the USB of the power receiving device 2 is detected
Collocation channel terminal (step S50) in Type-C connector female end 21, to confirm successful connection.Then, which passes
The initial electrical is given to select inventory to the power receiving device 2 (Source_Capabilities) (step S51), and receiving should be by electricity
The initial voltage/currents combination (step S52) of the device 2 according to initial electrical selection inventory requirements (Request).This implementation
In example, which selects only combine the voltage/current including single group in inventory, and the safety of preferably 5V/3A
Voltage/current combination, but be not limited.
After step S52, which transmits the handshaking signal after determining that the initial voltage/currents combination is errorless
(Accept) is to the power receiving device 2 (step S53).After step S53, which, which switches to supply voltage, meets this
The supply voltage (that is, corresponding to the above-mentioned initial specific voltage/currents combination) (step S54) of the inception requirements of power receiving device 2,
And this is transmitted after the completion of switching and is ready to complete signal (PS_Rdy) to the power receiving device 2 (step S55).In the power receiving device
2 receive after this is ready to complete signal, which persistently provides the initial electrical to should according to the supply voltage after switching
Power receiving device 2 (step S56),
After step S56, which determines that the power receiving device 2 can normally receive instruction, therefore, further passes
It gives the acquirement receiving end capability instruction to the power receiving device 2 (step S57), also, persistently judges whether to receive the power receiving device 2
The ability information (step S58) replied.
In the present embodiment, if the ability information that the power supply unit 1 does not receive the power receiving device 2 reply (such as should be by electricity
Device 2 is not replied, or the signal replied is not the ability information), then the power supply unit 1 executes an alternate process program (step
S581).The alternate process program first generates complete electric power choosing such as the step S40 in aforementioned second specific embodiment
Inventory is selected, and further as the mode of step S42 to step S47 are powered the switching of voltage and meet the requirements
Electric power lasting output.
After the power supply unit 1 receives the ability information of the power receiving device 2 reply, it can be adjusted according to the ability information
The content (step S59) of electric power selection inventory.In the present embodiment, it is adoptable more which records the power receiving device 2
A operating voltage/operating current combination, and include the optimum operating voltage in multiple operating voltage.The electric power selects inventory
Record the power supply unit 1 supported all voltage/current combination (5V/3A, 12V/3A, 15V/3A and 20V/ as escribed above
2.25A).In step S59, which mainly adjusts the electricity with the optimum operating voltage in the ability information
The content of power selection inventory.
More specifically, in the present embodiment, which mainly deletes voltage in electric power selection inventory and exceeds
The optimum operating voltage and the tolerance value and voltage/current combine, wherein the tolerance value is preferably 0.5V, but is not limited
It is fixed.
After step S59, which transmits the electric power adjusted and selects inventory to the power receiving device 2
(Source_Capabilities) (step S60), and receive the power receiving device 2 and select inventory institute according to the electric power adjusted
It is required that the specific voltage/the currents combination (step S61) of (Request).Then, the power supply unit 1 in confirm the specific voltage/
Currents combination it is correct and within the ability after, transmit the handshaking signal (Accept) to should for the specific voltage/currents combination
Power receiving device 2 (step S62).Then, which switches supply voltage extremely according to the specific voltage/currents combination immediately
Meet the requirement (step S63) of power receiving device 1, and transmits after the completion of switching this and be ready to complete signal (PS_Rdy) to should be by electricity
Device 2 (step S64).The power supply unit 1 is persistently to be powered to the power receiving device 2 according to the supply voltage after switching later
It acts (step S65).
Continue referring to Fig. 7, the voltage and current group for third specific embodiment of the invention adjusts flow chart.Fig. 7 is disclosed
Another kind adjusts the mode of the content of electric power selection inventory, is described as follows.
When the power supply unit 1 is after above-mentioned steps S58 obtains the ability information of the power receiving device 2 (step S500), first
Judge whether the optimum operating voltage of the power receiving device 2 is less than or equal to the sum and the power receiving device 2 of 5V and the tolerance value
The operating current whether be less than 3A (step S501).If being judged as YES in step S500, the power supply unit 1 adjustment should
Electric power selects the content of inventory to combine (step S502) for the voltage/current including 5V/3A.In the present embodiment, the tolerance value compared with
Good is 5V, and but not limited to this.
If being judged as NO in step S501, which further judges the best work of the power receiving device 2
Make whether voltage is less than or equal to the sum of 12V and the tolerance value and whether the operating current of the power receiving device 2 is less than 3A
(step S503).If being judged as YES in step S503, which adjusts the electric power and selects the content of inventory for packet
Include the voltage/current combination (step S504) of 5V/3A, 12V/3A.
If being judged as NO in step S503, which further judges the best work of the power receiving device 2
Make whether voltage is less than or equal to the sum of 15V and the tolerance value and whether the operating current of the power receiving device 2 is less than 3A
(step S505).If being judged as YES in step S505, which adjusts the electric power and selects the content of inventory for packet
Include the voltage/current combination (step S506) of 5V/3A, 12V/3A, 15V/3A.
If being judged as NO in step S505, which further judges the best work of the power receiving device 2
Make whether voltage is less than or equal to the sum of 20V and the tolerance value and whether the operating current of the power receiving device 2 is less than
2.25A (step S507).If being judged as YES in step S507, which adjusts the interior of electric power selection inventory
Appearance is the voltage/current combination (step S508) for including 5V/3A, 12V/3A, 15V/3A, 20V/2.25A.
If being judged as NO in step S507, indicate that the power receiving device 2 may be the electronic device of special requirement.Cause
This, to avoid damaging the power receiving device 2, the power supply unit 1 adjust the electric power select the content of inventory for including a safe voltage/
Currents combination (step S509).In the present embodiment, which is 5V/3A, and but not limited to this.
After the completion of the content adjustment of electric power selection inventory, it is clear which transmits electric power selection adjusted
It is single and to wait the selection (step S510) of the power receiving device 2 to the power receiving device 2, to carry out above-mentioned step S61 to the step
The movement of S65.
The method of supplying power to through the invention can avoid not optimized firmware and require voltage to be higher by by electricity to power supply unit
The too many electric power of the optimum operating voltage of device, thus power receiving device is caused to be powered the problem of device is burnt.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (20)
1. a kind of USB method of supplying power to for having protection mechanism, which is characterized in that apply to a power supply unit and a power receiving device, it should
By supporting the USB Type-C interface of USB PD specification to connect, which includes: for power supply unit and the power receiving device
A) a collocation channel terminal of a USB Type-C connector of the power receiving device is detected, wherein the power receiving device has
It is required that the power supply unit provides the defect of the electric power beyond an optimum operating voltage；
B) identity inquiry return signal (Discover Identity ACK) of the power receiving device is obtained, wherein the identity is ask
Ask that return signal includes at least the supplier's identification code (VID) and a product ID (PID) of the power receiving device；
C) judge whether the power receiving device is recorded in a protection list according to supplier's identification code and the product ID；
D) when the power receiving device is not recorded in the protection list, one electric power of transmission selects inventory to the power receiving device, wherein
Electric power selection inventory records the supported all voltage/current combinations of the power supply unit；And
E) when the power receiving device is recorded in the protection list, the optimum operating voltage of the power receiving device, and foundation are obtained
The optimum operating voltage adjusts the voltage/current combination recorded in electric power selection inventory, and transmits electric power choosing adjusted
Inventory is selected to the power receiving device.
2. the USB method of supplying power to of tool protection mechanism as described in claim 1, which is characterized in that the electric power selects inventory record
The voltage/current of 5V/3A, 12V/3A, 15V/3A and 20V/2.25A combine.
3. the USB method of supplying power to of tool protection mechanism as described in claim 1, which is characterized in that the protection name unirecord should be by
Supplier's identification code, the product ID and optimum operating voltage of electric installation, in step e, the electricity after being adjusted
Power select each voltage in inventory without departing from the optimum operating voltage and a tolerance value and.
4. the USB method of supplying power to of tool protection mechanism as claimed in claim 3, which is characterized in that the tolerance value is 0.5V.
5. the USB method of supplying power to of tool protection mechanism as claimed in claim 3, which is characterized in that step a and step b it
Between further include the following steps:
A1) providing an initial electrical selects inventory to the power receiving device；
A2) after step a1, one initial voltage/currents combination, one inception requirements of power receiving device selection are received；
A3) after step a2, a handshaking signal is transmitted to the power receiving device for the initial voltage/currents combination；
A4) after step a3, it is initial to meet this to switch the supply voltage of the power supply unit according to the initial voltage/currents combination
It is required that；
A5) after step a4, transmission steady completes signal to the power receiving device；
A6) after step a5, an initial output power is provided to the power receiving device according to the supply voltage after switching, wherein this is first
Beginning output power is corresponding to the initial voltage/currents combination；And
A7) after step a6, step b is executed.
6. the USB method of supplying power to of tool protection mechanism as claimed in claim 5, which is characterized in that the initial electrical selects inventory
Only record one group of initial voltage/currents combination.
7. the USB method of supplying power to of tool protection mechanism as claimed in claim 6, which is characterized in that the initial voltage/currents combination
For 5V/3A.
8. such as the USB method of supplying power to of tool protection mechanism of any of claims 1-7, which is characterized in that this is for Denso
It is set to a power supply unit, which is a laptop.
9. a kind of USB method of supplying power to for having protection mechanism, applies to a power supply unit and a power receiving device, which is characterized in that should
By supporting the USB Type-C interface of USB PD specification to connect, which includes: for power supply unit and the power receiving device
A) a collocation channel terminal of a USB Type-C connector of the power receiving device is detected, wherein the power receiving device has
It is required that the power supply unit provides the defect of the electric power beyond an optimum operating voltage；
B) multiple operating voltages/operating current combination of the power receiving device is obtained, and multiple operating voltage includes that this is best
Operating voltage；
C) according to the optimum operating voltage adjust an electric power select inventory, wherein the electric power selection inventory record the power supply unit can
All voltage/currents combination supported；And
D) transmitting the electric power adjusted selects inventory to the power receiving device.
10. the USB method of supplying power to of tool protection mechanism as claimed in claim 9, which is characterized in that the electric power selects inventory record
The voltage/current of 5V/3A, 12V/3A, 15V/3A and 20V/2.25A combine.
11. the USB method of supplying power to of tool protection mechanism as claimed in claim 9, which is characterized in that step a and step b it
Between further include the following steps:
A1) providing an initial electrical selects inventory to the power receiving device；
A2) after step a1, one initial voltage/currents combination, one inception requirements of power receiving device selection are received；
A3) after step a2, a handshaking signal is transmitted to the power receiving device for the initial voltage/currents combination；
A4) after step a3, it is initial to meet this to switch the supply voltage of the power supply unit according to the initial voltage/currents combination
It is required that；
A5) after step a4, transmission steady completes signal to the power receiving device；
A6) after step a5, an initial output power is provided to the power receiving device according to the supply voltage after switching, wherein this is first
Beginning output power is corresponding to the initial voltage/currents combination；And
A7) after step a6, step b is executed.
12. the USB method of supplying power to of tool protection mechanism as claimed in claim 11, which is characterized in that initial electrical selection is clear
Single only includes one group of initial voltage/currents combination.
13. the USB method of supplying power to of tool protection mechanism as claimed in claim 12, which is characterized in that the initial voltage/set of currents
It is combined into 5V/3A.
14. the USB method of supplying power to of tool protection mechanism as claimed in claim 12, which is characterized in that in step c, be adjusted
Each voltage in electric power selection inventory afterwards without departing from the optimum operating voltage and a tolerance value and voltage/current group
It closes.
15. the USB method of supplying power to of tool protection mechanism as claimed in claim 14, which is characterized in that the tolerance value is 0.5V.
16. the USB method of supplying power to of tool protection mechanism as claimed in claim 12, which is characterized in that step c includes following step
It is rapid:
C1) judge whether the optimum operating voltage exceeds the sum of 5V and a tolerance value and whether the operating current is less than 3A；
C2 it) when the optimum operating voltage is without departing from 5V and the sum of the tolerance value, adjusts the electric power and selects inventory for including 5V/3A's
Voltage/current combination；
C3) the sum when the optimum operating voltage beyond 5V and the tolerance value, further judges whether the optimum operating voltage exceeds
Whether the sum and the operating current of 12V and the tolerance value are less than 3A；
C4 it) when the optimum operating voltage is without departing from 12V and the sum of the tolerance value, adjusts the electric power and selects inventory for including 5V/3A
And the voltage/current combination of 12V/3A；
C5) the sum when the optimum operating voltage beyond 12V and the tolerance value, further judges whether the optimum operating voltage exceeds
Whether the sum and the operating current of 15V and the tolerance value are less than 3A；
C6) when the optimum operating voltage is without departing from 15V and the sum of the tolerance value, adjust the electric power select inventory for including 5V/3A,
The voltage/current of 12V/3A and 15V/3A combines；
C7) the sum when the optimum operating voltage beyond 15V and the tolerance value, further judges whether the optimum operating voltage exceeds
Whether the sum and the operating current of 20V and the tolerance value are less than 2.25A；
C8) when the optimum operating voltage is without departing from 20V and the sum of the tolerance value, adjust the electric power select inventory for including 5V/3A,
The voltage/current of 12V/3A, 15V/3A and 20V/2.25A combine.
17. the USB method of supplying power to of tool protection mechanism as claimed in claim 16, which is characterized in that step c further includes a step
Rapid c9: it when sum of the optimum operating voltage beyond 20V and the tolerance value, adjusts the electric power and selects inventory for including a safety electricity
Pressure/currents combination.
18. the USB method of supplying power to of tool protection mechanism as claimed in claim 17, which is characterized in that the safe voltage/set of currents
It is combined into 5V/3A.
19. the USB method of supplying power to of tool protection mechanism as claimed in claim 17, which is characterized in that the tolerance value is 0.5V.
20. the USB method of supplying power to of the tool protection mechanism as described in any one of claim 9-19, which is characterized in that the power supply
Device is a power supply unit, which is a laptop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/227,534 US10468893B2 (en) | 2015-08-19 | 2016-08-03 | USB charging method having protection function |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562207210P | 2015-08-19 | 2015-08-19 | |
| US62/207,210 | 2015-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106469925A CN106469925A (en) | 2017-03-01 |
| CN106469925B true CN106469925B (en) | 2019-05-07 |
Family
ID=57848390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610213101.6A Active CN106469925B (en) | 2015-08-19 | 2016-04-07 | Has the USB method of supplying power to of protection mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106469925B (en) |
| TW (1) | TWI554890B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311237A (en) * | 2018-03-23 | 2019-10-08 | 鸿富锦精密工业(武汉)有限公司 | The burning program device of connection component and the application connection component |
| CN108663590A (en) * | 2018-05-15 | 2018-10-16 | 硅谷数模半导体（北京）有限公司 | The test device and method of USB-C equipment |
| CN111555277A (en) * | 2020-05-19 | 2020-08-18 | 广东电科院能源技术有限责任公司 | Port shore power automatic charging and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6362610B1 (en) * | 2001-08-14 | 2002-03-26 | Fu-I Yang | Universal USB power supply unit |
| CN102422504A (en) * | 2009-05-18 | 2012-04-18 | 波士顿电力公司 | Energy efficient and fast charge modes of a rechargeable battery |
| TW201339843A (en) * | 2012-03-28 | 2013-10-01 | Acer Inc | USB protection devices, and methods thereof |
-
2016
- 2016-04-07 TW TW105110843A patent/TWI554890B/en active
- 2016-04-07 CN CN201610213101.6A patent/CN106469925B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6362610B1 (en) * | 2001-08-14 | 2002-03-26 | Fu-I Yang | Universal USB power supply unit |
| CN102422504A (en) * | 2009-05-18 | 2012-04-18 | 波士顿电力公司 | Energy efficient and fast charge modes of a rechargeable battery |
| TW201339843A (en) * | 2012-03-28 | 2013-10-01 | Acer Inc | USB protection devices, and methods thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106469925A (en) | 2017-03-01 |
| TWI554890B (en) | 2016-10-21 |
| TW201709079A (en) | 2017-03-01 |
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