CN107104493B - Charger and power transmission control chip and charging method thereof - Google Patents
Charger and power transmission control chip and charging method thereof Download PDFInfo
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Abstract
A charger, a power transmission control chip and a charging method thereof are provided. The resistance value of the equivalent resistance corresponding to the power bus is calculated according to the charging current and the voltage sensing signals respectively provided by the chips in the first connector and the second connector, and the charging voltage provided for the power bus is adjusted according to the target charging voltage, the current charging current and the resistance value change of the equivalent resistance corresponding to the power bus.
Description
Technical field
The present invention controls chip about a kind of electronic device, and in particular to a kind of charger and its power transmission
With charging method.
Background technique
With making rapid progress for science and technology, the electronic apparatus such as smart phone, tablet computer are in people's lives gradually
Play indispensable presence.For electronic apparatus, charging always is unavoidable problem.It is general next
It says, charging cables specification used in different electronic devices may be different, the characteristic of the manufactured charging cables of different vendor
It may not also be identical.With the increase of use time, charging cables may be because aging and the characteristic of charging cables occurred
Variation, such as the resistance value of charging cables become larger, and so since the specification of charging cables is different from material, the degree of variation can also
Can not be identical, therefore how to correspond to the degree of aging of different charging cables accurately and safely charge, it is highly important
Project.
Summary of the invention
The present invention provides a kind of charging unit and its charger and charging method, can accurately and safely correspond to different cables
Degree of aging charge.
Charger of the invention is suitable for charging to electronic device by cable, and wherein one end of cable connects by first
Connector provides target charging voltage to electronic device, and the other end of cable couples charger by the second connector.Charger packet
Include AC DC conversion circuit and power transmission control chip.AC DC conversion circuit couples the power bus of cable, will
Alternating voltage is converted to DC voltage, to provide charging voltage and charging current.Power transmission controls chip according to from the
First voltage sensing signal, current charging voltage and the current charging current that first chip of one connector provides calculate first
Equivalent resistance, and AC DC conversion circuit is adjusted according to the first equivalent resistance, current charging current and target charging voltage
The charging voltage of offer, wherein the first equivalent resistance is the electricity of the section in corresponding power bus between the first chip and charger
Resistance.
The present invention also provides a kind of charging methods of charger, and wherein charger is suitable for carrying out electronic device by cable
One end of charging, cable provides target charging voltage to electronic device by the first connector, and the other end of cable passes through second
Connector couples charger.The charging method of charger includes the following steps.Alternating voltage is converted into DC voltage, to provide
Charging voltage and charging current.According to from the first connector the first chip provide first voltage sensing signal, at present
Charging voltage and current charging current calculate the first equivalent resistance.According to the first equivalent resistance, current charging current and mesh
Mark charging voltage adjust charging voltage, wherein the first equivalent resistance be corresponding power bus between the first chip and charger
The resistance of section.
Power transmission control chip of the invention is configured in charger, charger be suitable for by cable to electronic device into
Row charging, wherein one end of cable provides target charging voltage to electronic device by the first connector, and the other end of cable is logical
The second connector coupling charger is crossed, power transmission control chip is configured to, according to the first chip from the first connector
The first voltage sensing signal of offer, current charging voltage and current charging current calculate the first equivalent resistance, and according to the
The charging voltage that one equivalent resistance, current charging current and target charging voltage adjustment charger provide, wherein first is equivalent
Resistance is the resistance of the section in corresponding power bus between the first chip and charger.
Based on above-mentioned, in the embodiment of the present invention foundation charging current and the first connector, the second connector chip
The voltage sense signal provided respectively calculates equivalent resistance corresponding to power bus, and according to target charging voltage, mesh
The resistance change of equivalent resistance corresponding to preceding charging current and power bus is supplied to the charging of power bus to adjust
Voltage is charged with accurately and safely corresponding to the degree of aging of different cables, while can also monitor the degree of cable aging.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate appended attached drawing
It is described in detail below.
Detailed description of the invention
Fig. 1 is the schematic diagram according to a kind of charger of the embodiment of the present invention.
Fig. 2 is the schematic diagram according to a kind of charger of another embodiment of the present invention.
Fig. 3 is the flow chart according to a kind of charging method of charger of one embodiment of the invention.
Fig. 4 is the flow chart according to a kind of charging method of charger of one embodiment of the invention.
[figure elements symbol]
102: charger
104,106: connector
108: cable
110,112: chip
202: AC DC conversion circuit
204: detection circuit
206: power transmission controls chip
208: register
210: non-volatility memorizer
VT1: target charging voltage
E1: electronic device
VBUS: power bus
S1, S2: voltage sense signal
P1: data transmission connecting-leg
R1, R2, R3: equivalent resistance
S302~S306, S402~S416: charging method step
Specific embodiment
Fig. 1 is to please refer to Fig. 1 according to a kind of schematic diagram of charging unit of the embodiment of the present invention.Charging unit includes
One end of charger 102, connector 104, connector 106 and cable 108, cable 108 couples charger by connector 106
102, the other end then passes through connector 104 and provides target charging voltage VT1 electron device E1.Furthermore, it is understood that cable 108 wraps
Power bus VBUS is included, connector 104 includes chip 110, and connector 106 includes chip 112,112 coupling of chip 110 and chip
Meet power bus VBUS.Chip 112 can detect the voltage on the power bus VBUS for the position for being correspondingly connected with first 106 and generate electricity
Sensing signal S2 is pressed, and voltage sense signal S2 is transmitted to by charger 102 by the data transmission connecting-leg P1 of connector 106.
Similarly, chip 110 can detect the voltage on the power bus VBUS for the position for being correspondingly connected with first 104 and generate voltage sensing letter
Number S1, and voltage sense signal S1 is transmitted to by charger 102 by the data transmission connecting-leg P1 of connector 104.Charger 102
It can be calculated according to current charging current, current charging voltage, received voltage sense signal S2 and voltage sense signal S1
Corresponded on power bus VBUS the section between chip 112 and chip 110 equivalent resistance R3 and corresponding chip 112 and charging
The equivalent resistance R2 of section between device 102, and according to equivalent resistance R3, equivalent resistance R2, current charging current and target
Charging voltage VT1 adjusts the charging voltage for being supplied to power bus VBUS.
As an example it is assumed that target charging voltage VT1 is 5 volts, charger 102 provides 5 volts of charging electricity at the beginning
Pressure and 3 amperes of charging current, and the voltage point that voltage sense signal S2 and S1 instruction chip 112 and chip 110 are sensed
Wei not be 4.8 volts and 4.6 volts, then it is (5-4.8)/3=0.067 ohm that charger 102, which can calculate equivalent resistance R2, etc.
Imitating resistance R3 is then (4.8-4.6)/3=0.067 ohm.To ensure that the voltage measured on chip 110 is 5 volts, charger
Charging voltage can be risen to 5.4 volts according to equivalent resistance R3, R2, charging current and target charging voltage VT1 by 102, with
Voltage value needed for making output voltage provided by connector 104 meet target charging voltage VT1 (that is, 5.4- (0.067 ×
3)-(0.067 × 3)=5 volt).So according to current charging voltage, current charging current and connector 104, connector
The voltage sense signal that chip in 106 provides respectively calculates equivalent electricity corresponding to the power bus VBUS of different sections
Resistance value, and according to equivalent corresponding to the power bus VBUS of current charging current, target charging voltage VT1 and different sections
The resistance change of resistance is supplied to the charging voltage of power bus VBUS to adjust, it can be ensured that target charging voltage VT1 is maintained
It is charged in a fixed voltage (such as 5 volts) with being supplied to electronic device E1.
In another embodiment, charger 102 can also be electric according to the current charging current, current charging that it is provided
Pressure, received voltage sense signal S1 directly calculate corresponded on power bus VBUS it is equivalent between chip 110 and charger 102
Resistance R1 (=R3+R2=(5-4.6)/3=0.13 ohm), and filled according to equivalent resistance R1, current charging current and target
Piezoelectric voltage VT1 adjusts the charging voltage for being supplied to power bus VBUS, to ensure that target charging voltage VT1 maintains a fixed electricity
Pressure (such as 5 volts) is charged with being supplied to electronic device E1.
In another embodiment, charger 102 can also be electric according to the current charging current, current charging that it is provided
Pressure, received voltage sense signal S2 directly calculate corresponded on power bus VBUS it is equivalent between chip 112 and charger 102
Resistance R2 (=(5-4.8)/3=0.067 ohm), to learn the equivalent resistance R2 between connector 106 and charger, as rear
Continuous calculating is used.
In addition, when detecting equivalent resistance R3, when the resistance value of R2 (or equivalent resistance R1) changes (such as because of cable
108 aging of line and resistance value is got higher), charger 102 can stop charging or change to be less than the charging of original charging current
Specification charges, and causes the temperature of cable 108 excessively high to avoid excessive charging current, or cause the damage of electronic component
It is bad.
Fig. 2 is according to a kind of schematic diagram of charging unit of another embodiment of the present invention, referring to figure 2..Specifically,
In the present embodiment, charger 102 may include AC DC conversion circuit 202, detection circuit 204 and power transmission control core
Piece 206, AC DC conversion circuit 202 couple power bus VBUS, and detection circuit 204 couples power bus VBUS, and electric power passes
Defeated control chip 206 couples AC DC conversion circuit 202, detection circuit 204, and passes through data transmission connecting-leg P1 coupling chip
110 and chip 112.Alternating voltage can be converted to DC voltage by AC DC conversion circuit 202, to provide charging current.
Detection circuit 204 can detect the charging voltage of the offer of AC DC conversion circuit 202, and detection circuit 204 may be, for example, simulation number
Word converter, but not limited to this.Power transmission controls chip 206 then can be according to voltage sense signal S1, current charging voltage
And charging current calculates equivalent resistance R1 or according to voltage sense signal S1, voltage sense signal S2, at present charging at present
Voltage and current charging current calculate equivalent resistance R3 and equivalent resistance R2, and according to equivalent resistance R1 (or R3, R2), at present
The charging voltage that charging current and target charging voltage VT1 adjustment AC DC conversion circuit 202 provide, equivalent resistance
Described in the calculation of R3, R2, R1 and the adjustment mode of charging voltage embodiment as above, therefore details are not described herein.
Furthermore, it is understood that power transmission control chip 206 may include register 208 and non-volatility memorizer 210,
Middle register 208 can for example be come with static random access memory (Static Random Access Memories, SRAM) real
It applies, and non-volatility memorizer 210 then can for example be come with single programmable (One-Time Programming, OTP) memory
Implement, is so not limited.In the present embodiment, chip 110 and chip 112 may be, for example, electronic marker (E-Marker) core
The connecting interface of piece, connector 104 and connector 106 can be USB type-C interface, the number of connector 104 and connector 106
It can be collocation channel (Configuration Channel, CC) pin according to transmission connecting-leg P1.Chip 110 wraps respectively with chip 112
Include analog-to-digital conversion circuit 212 and 214, be respectively coupled to power bus VBUS, by power bus with chip 110 and core
The corresponding voltage in the position of piece 112 is converted to voltage sense signal S1 and voltage sense signal S2.Power transmission controls chip 206
In register 208 can store the newest N number of voltage sense signal S1 being detected and voltage sense signal S2, wherein N is big
In 1 positive integer.Furthermore first time is calculated when register 208 can also be stored in initial charged in some embodiments
Equivalent resistance R1, equivalent resistance R3 and R2, to judge whether aging is used cable 108 as subsequent.Power transmission controls core
Piece 206 can calculate newest etc. according to current charging current, current charging voltage, the newest voltage sense signal S1 being detected
Resistance R1 is imitated, or according to current charging current, current charging voltage, newest voltage sense signal S1, the voltage being detected
Sensing signal S2 calculates newest equivalent resistance R3, R2, constantly to observe the impedance variations situation of power bus VBUS, deposit
Device 208 can also store newest equivalent resistance R1, R3, R2, to be used as subsequent calculating.Power transmission controls chip 208 simultaneously
It can adjust and hand over according to newest equivalent resistance R1 (or equivalent resistance R3, R2), current charging current and target charging voltage VT1
The charging voltage that DC converting circuit 202 provides is flowed, with immediately in response to the impedance variations of power bus VBUS, so that it is accurate
And the degree of aging for safely corresponding to cable 108 charges.
Specifically, non-volatility memorizer 210 can store preset charged information, and preset charged information may include a variety of fill
Data of electrical specification, such as charging voltage, charging current and cable impedance ... etc..Power transmission control chip 206 can lead to
The data transmission connecting-leg P1 for crossing connector 104 receives the Charging Specification data from electronic device E1, and believes according to preset charged
Breath provides the preset charge voltage and preset charged electric current of corresponding Charging Specification data.As an example it is assumed that electronic device E1 institute
The Charging Specification data of offer illustrate that the Charging Specification demand of electronic device E1 is 5 volts/3 amperes, and power transmission controls chip
102 can provide 5 volts/3 amperes of charge power supply according to Charging Specification data.
In addition, the preset charged information that non-volatility memorizer 210 stores may also include the power supply of this corresponding Charging Specification
The predetermined resistance value of bus VBUS, such as 0.1 ohm.Power transmission control chip 206 judges the cable coupled at present as quilt
Dynamic formula cable, power transmission control chip 206 can not interpretation voltage sense signal S1 and when voltage sense signal S2, power transmission
The predetermined resistance value (such as 0.1 ohm) that control chip 206 is stored using non-volatility memorizer 210 is multiplied by current charger
The voltage (such as 0.3V) that charging current provided by 102 (such as 3A) obtains covers the charging voltage current to charger 102,
So that charger 102 provides the charging voltage of 5.3V.
In addition, power transmission control chip 206 can calculate newest equivalent resistance R3 and newest equivalent resistance R2's and
To obtain newest resistance summation, and judge whether newest resistance summation and the difference of initial resistance summation are greater than tolerance value.Wherein,
Initial resistance summation be power transmission control chip 206 according to preset charge voltage, preset charged electric current, be for the first time detected
Voltage sense signal S1 and voltage sense signal S2 calculate initial equivalent resistance R3 and initial equivalent resistance R2, and calculate
Initial equivalent resistance R3 and initial equivalent resistance be R2's and obtained resistance summation.If newest resistance summation and initial electricity
The difference for hindering summation is greater than tolerance value (such as 0.1 ohm), and power transmission control chip 206 can control AC DC conversion circuit
202 stop providing charging current, alternatively, in some embodiments, power transmission control chip 206 can control AC DC to convert
Circuit 202 changes to be charged with being less than the Charging Specification of original electric current.As an example it is assumed that being filled provided by electronic device E1
Electrical specification data illustrate that the Charging Specification demand of electronic device E1 is 5 volts/3 amperes, due to power transmission control chip 206
Judge that newest resistance summation is greater than initial resistance summation, therefore power transmission controls the filling according to electronic device E1 of chip 102
Electrical specification data change to provide 5 volts/2 amperes of charge power supply, are mentioned with accurately and safely corresponding to the degree of aging of cable 108
For having the target charging voltage VT1 of reduced-current, wherein the calculation of subsequent charge voltage compensation can be such as above-described embodiment institute
It states, details are not described herein.
If the difference of newest resistance summation and initial resistance summation is not greater than above-mentioned tolerance value, power transmission controls chip
206 adjust according to newest resistance summation, current charging current and target charging voltage VT1 control AC DC conversion circuit 202
Whole charging voltage.As an example it is assumed that newest resistance summation is 0.19 ohm, initial resistance summation is 0.1 ohm, and newest electricity
(0.09 ohm) of difference for hindering summation and initial resistance summation is less than tolerance value (0.1 ohm), then power transmission controls chip 206
AC DC conversion circuit 202 can be controlled according to newest resistance summation, current charging current and target charging voltage VT1 will fill
Piezoelectric voltage improves, with target charging voltage needed for providing electronic device E1.
In another embodiment, power transmission control chip 206 can directly calculate newest equivalent resistance R1 and initial electricity
Whether the difference of resistance R1 is greater than tolerance value.If the difference of newest equivalent resistance R1 and initial resistance R1 be greater than tolerance value (such as
0.1 ohm), power transmission control chip 206 can control AC DC conversion circuit 202 to stop providing charging current, alternatively,
In section Example, power transmission control chip 206 can control AC DC conversion circuit 202 to change to be less than filling for original electric current
Electrical specification charges.If the difference of newest equivalent resistance R1 and initial resistance R1 is not greater than above-mentioned tolerance value, electric power is passed
Defeated control chip 206 is according to newest resistance R1, current charging current and target charging voltage VT1 control AC DC conversion electricity
Road 202 adjusts charging voltage.
Fig. 3 is the flow chart according to a kind of charging method of charger of one embodiment of the invention.It can by above-described embodiment
Know, it may include the following steps that the charging method of charger, which is the charging method of adaptability,.Firstly, alternating voltage is converted to
DC voltage, to provide charging voltage and charging current (step S302).Then, according to the first core from the first connector
Second voltage sensing signal that first voltage sensing signal that piece provides, the second chip from the second connector provide, at present
Charging voltage and current charging current calculate third equivalent resistance and the second equivalent resistance (step S304).
Furthermore, it is understood that voltage on the power bus of the detectable corresponding first connector position of the first chip and generate the
One voltage sense signal, and first voltage sensing signal is transmitted to by charger by the data transmission connecting-leg of the first connector,
Second chip can detect the voltage on the power bus of corresponding second connector position and generate second voltage sensing signal, and lead to
Second voltage sensing signal is transmitted to charger by the data transmission connecting-leg for crossing the second connector.Wherein the first chip and the second core
Piece may be, for example, electronic marker (E-Marker) chip, and the connecting interface of the first connector and the second connector may be, for example, USB
The data transmission connecting-leg of type-C interface, the first connector and the second connector is collocation channel (Configuration
Channel, CC) pin.When being charged at the beginning, the charging of corresponding electronic device can be provided according to preset charged information
The preset charge voltage and preset charged electric current of specification data.In addition, can also be according to preset charged electric current, preset charged electricity
Pressure, the first voltage sensing signal that is detected for the first time and second voltage sensing signal calculate initial third equivalent resistance with
The second initial equivalent resistance.Finally, being filled according to third equivalent resistance, the second equivalent resistance, current charging current and target
Piezoelectric voltage adjusts charging voltage (step S306), wherein third equivalent resistance be on the power bus of corresponding cable the first chip and
The resistance of section between second chip, the second equivalent resistance are the area in corresponding power bus between the second chip and charger
The resistance of section.
It is worth noting that, in some embodiments, step S304 can also be only in accordance with first from the first connector
First voltage sensing signal, current charging voltage and the current charging current that chip provides calculate the first equivalent resistance,
Wherein the first equivalent resistance is the resistance of the section in corresponding power bus between the first chip and charger.It is then followed by step
Charging voltage is adjusted according to the first equivalent resistance, current charging current and target charging voltage in rapid S306.
Fig. 4 is according to a kind of flow chart of the charging method of charger of another embodiment of the present invention, referring to figure 4..It fills
The adaptability charging method of electric appliance may include, firstly, providing the Charging Specification of corresponding electronic device according to preset charged information
The preset charge voltage and preset charged electric current (step S402) of data.Then, according to preset charged electric current, preset charged electricity
Pressure, the first voltage sensing signal that is detected for the first time and second voltage sensing signal calculate initial third equivalent resistance with
The second initial equivalent resistance (step S404).Then, initial third equivalent resistance and the second initial equivalent resistance are calculated
Sum to obtain initial resistance summation (step S406).Later, newest third equivalent resistance and newest second equivalent is calculated
The sum of resistance is to obtain newest resistance summation (step S408), the then difference according to newest resistance summation and initial resistance summation again
Value decides whether to adjust charging voltage (step S410).Furthermore, it is understood that in step S410, can determine whether newest resistance summation with
Whether the difference of initial resistance summation is greater than tolerance value (step S412).If the difference of newest resistance summation and initial resistance summation
Greater than tolerance value, stops providing charging current or change to be less than the Charging Specification of original charging current come the (step that charged
S414).And if the difference of newest resistance summation and initial resistance summation is not greater than tolerance value, according to newest resistance summation, mesh
Preceding charging current and target charging voltage adjustment charging voltage (step S416).
It is worth noting that, in some embodiments, it can also be in step s 404 according to preset charged electric current, preset charged
Voltage, the first voltage sensing signal being detected for the first time calculate the first initial equivalent resistance, and direct basis is newest
The difference of first equivalent resistance and the first initial equivalent resistance adjusts charging voltage.Such as judge newest first equivalent resistance
Whether it is greater than tolerance value with the difference of the first initial equivalent resistance, if newest first equivalent resistance and initial first equivalent
The difference of resistance is greater than tolerance value, stops providing charging current or change to be less than filling for the preset charged electric current of corresponding Charging Specification
Electric current charges.And if the difference of newest first equivalent resistance and the first initial equivalent resistance is not greater than tolerance
Value, power transmission control chip and fill according to the adjustment of newest first equivalent resistance, current charging current and target charging voltage
Piezoelectric voltage.
In this way, can effectively correspond to the aging of different cables by the charging method of adaptability described in above-described embodiment
Degree charges, to ensure the safety that charges.It is worth noting that, in some embodiments, above-mentioned charging method can also be
It is just used when charging current is greater than a particular value, such as power transmission control chip can be greater than in charging current to inductive charging rule
When preset charged electric current (such as 3 amperes) of lattice data, just starting uses above-mentioned charging method.
It is worth noting that, in different application situations, the related operation function of above-mentioned power transmission control chip 206
It can use general programming language (programming languages, such as C or C++), hardware description language
(hardware description languages, such as Verilog HDL or VHDL) or other suitable programming languages come
It is embodied as software, firmware or hardware.Can be performed the correlation function software (or firmware) can be arranged to it is any of
Computer can access medium (computer-accessible medias), such as tape (magnetic tapes), semiconductor
(semiconductors) memory, disk (magnetic disks) or CD (compact disks, for example, CD-ROM or
DVD-ROM), or internet (Internet) can be passed through, wire communication (wired communication), wirelessly communicated
(wireless communication) or other communication medias transmit the software (or firmware).The software (or firmware) can
It is (or solid in order to which the software is accessed/executed by the processor of computer to be stored in the accessing in medium of computer
Part) program code (programming codes).In addition, apparatus and method of the present invention can pass through hardware and software
Combination is to realize.
In conclusion the embodiment of the present invention is according to the chip in charging current and the first connector, the second connector
The voltage sense signal provided respectively calculates equivalent resistance corresponding to the power bus of different sections, and according to target
Charging voltage, current charging current are mentioned from the resistance change of equivalent resistance corresponding to the power bus of different sections to adjust
The charging voltage of power bus is supplied, is charged with accurately and safely corresponding to the degree of aging of different cables, while can also
Monitor the degree of cable aging.
Claims (36)
1. a kind of charger, suitable for being charged by a cable to an electronic device, wherein one end of the cable passes through one the
One connector provides a target charging voltage to the electronic device, and the other end of the cable couples this by one second connector and fills
Electric appliance, the charger include:
One AC DC conversion circuit, couples a power bus of the cable, and an alternating voltage is converted to a DC voltage, with
One charging voltage and a charging current are provided；And
One power transmission controls chip, and the first voltage provided according to one first chip from first connector senses letter
Number, current charging voltage and current charging current calculate one first equivalent resistance, and according to first equivalent resistance, this at present
Charging current and the target charging voltage adjust the AC DC conversion circuit offer the charging voltage, wherein this first etc.
Effect resistance is the resistance of the section on the corresponding power bus between first chip and the charger.
2. charger as described in claim 1, wherein first chip detects the power supply of the corresponding first connector position
Voltage in bus and generate the first voltage sensing signal, and by the data transmission connecting-leg of first connector by this first
Voltage sense signal is transmitted to the charger.
3. charger as described in claim 1, wherein the power transmission controls chip further include:
One non-volatility memorizer, stores a preset charged information, which controls chip and pass through first connector
Data transmission connecting-leg receives the Charging Specification data of the electronic device, which controls chip according to the preset charged information
The preset charge voltage and a preset charged electric current of the corresponding Charging Specification data are provided.
4. charger as claimed in claim 3, wherein the power transmission controls chip further include:
One register stores the newest N number of first voltage sensing signal being detected, and wherein N is the positive integer greater than 1, the electricity
Power transmission control chip is according to the current charging current, the current charging voltage, the newest first voltage sensing being detected
Signal calculates newest first equivalent resistance.
5. charger as claimed in claim 4, wherein power transmission control chip according to the preset charged electric current, this is default
Charging voltage, the first voltage sensing signal being detected for the first time calculate initial first equivalent resistance, the register
Also store initial first equivalent resistance.
6. charger as claimed in claim 5, wherein power transmission control chip judges newest first equivalent resistance
Whether it is greater than a tolerance value with the difference of initial first equivalent resistance, if newest first equivalent resistance should with initial
The difference of first equivalent resistance is greater than the tolerance value, and power transmission control chip controls AC DC conversion circuit stopping mentions
It is charged for the charging current or change with being less than the charging current of the preset charged electric current of the corresponding Charging Specification, if most
The difference of new first equivalent resistance and initial first equivalent resistance is not greater than the tolerance value, which controls core
Piece controls AC DC conversion according to newest first equivalent resistance, the current charging current and the target charging voltage
The regulation of electrical circuit charging voltage.
7. charger as described in claim 1, wherein power transmission control chip is also according to from second connector
A second voltage sensing signal, the current charging voltage and current charging current that one second chip provides calculate one second
Equivalent resistance and a third equivalent resistance, wherein second equivalent resistance is to correspond to second chip on the power bus and be somebody's turn to do
The resistance of section between charger, the third equivalent resistance are first chip and second chip on the corresponding power bus
Between section resistance, the power transmission control chip and according to second equivalent resistance, the third equivalent resistance, this at present
Charging current and the target charging voltage adjust the charging voltage of AC DC conversion circuit offer.
8. charger as claimed in claim 7, wherein first chip detects the power supply of the corresponding first connector position
Voltage in bus and generate the first voltage sensing signal, and by the data transmission connecting-leg of first connector by this first
Voltage sense signal is transmitted to the charger, which detects on the power bus of the corresponding second connector position
Voltage and generate the second voltage sensing signal, and the second voltage is sensed by the data transmission connecting-leg of second connector
Signal is transmitted to the charger.
9. charger as claimed in claim 7, wherein the power transmission controls chip further include:
One non-volatility memorizer, stores a preset charged information, which controls chip and pass through first connector
Data transmission connecting-leg receives the Charging Specification data of the electronic device, which controls chip according to the preset charged information
The preset charge voltage and a preset charged electric current of the corresponding Charging Specification data are provided.
10. charger as claimed in claim 9, wherein the power transmission controls chip further include:
One register stores the newest N number of first voltage sensing signal being detected and second voltage sensing signal, and wherein N is
Positive integer greater than 1, the power transmission control chip according to the current charging current, the current charging voltage, it is newest be detected
The first voltage sensing signal and the second voltage sensing signal arrived calculates newest second equivalent resistance and is somebody's turn to do with newest
The sum of third equivalent resistance and newest second equivalent resistance of calculating and the newest third equivalent resistance is to obtain one most
New resistance summation.
11. charger as claimed in claim 10, wherein power transmission control chip according to the preset charged electric current, this is pre-
If charging voltage, the first voltage sensing signal being detected for the first time and the second voltage sensing signal calculate initial be somebody's turn to do
Second equivalent resistance and the initial third equivalent resistance calculate initial second equivalent resistance and the initial third equivalent
For the sum of resistance to obtain an initial resistance summation, which also stores initial second equivalent resistance and the initial third
Equivalent resistance.
12. charger as claimed in claim 11, wherein power transmission control chip judges the newest resistance summation and is somebody's turn to do
Whether the difference of initial resistance summation is greater than a tolerance value, if the difference of the newest resistance summation and the initial resistance summation is greater than
The tolerance value, power transmission control chip controls AC DC conversion circuit stop providing the charging current or change to be less than
The charging current of the preset charged electric current of the Charging Specification is corresponded to charge, if the newest resistance summation and the initial electricity
The difference of resistance summation is not greater than the tolerance value, which controls chip according to the newest resistance summation, the current charging electricity
Stream and the target charging voltage control the AC DC conversion circuit and adjust the charging voltage.
13. a kind of charging method of charger, which is suitable for charging to an electronic device by a cable, wherein should
One end of cable provides a target charging voltage to the electronic device by one first connector, and the other end of the cable passes through one
Second connector couples the charger, and the charging method of the charger includes:
One alternating voltage is converted into a DC voltage, to provide a charging voltage and a charging current；
According to from first connector one first chip provide a first voltage sensing signal, current charging voltage and
Charging current calculates one first equivalent resistance at present；And
The charging voltage is adjusted according to first equivalent resistance, the current charging current and the target charging voltage, wherein should
First equivalent resistance is the resistance of the section on a power bus of the corresponding cable between first chip and the charger.
14. the charging method of charger as claimed in claim 13, wherein first chip detects corresponding first connector
Voltage on the power bus of position and generate the first voltage sensing signal, and transmitted by the data of first connector
The first voltage sensing signal is transmitted to the charger by pin.
15. the charging method of charger as claimed in claim 13, comprising:
The preset charge voltage and preset charged electricity of the corresponding Charging Specification data are provided according to a preset charged information
Stream.
16. the charging method of charger as claimed in claim 15, comprising:
The newest N number of first voltage sensing signal being detected is stored, wherein N is the positive integer greater than 1；And
It is calculated most according to the current charging current, the current charging voltage, newest first voltage sensing signal being detected
New first equivalent resistance.
17. the charging method of charger as claimed in claim 16, comprising:
According to the preset charged electric current, the preset charge voltage, the first voltage sensing signal that is detected calculates for the first time
Initial first equivalent resistance；And
Initial first equivalent resistance of storage.
18. the charging method of charger as claimed in claim 17, comprising:
Judge whether newest first equivalent resistance and the difference of initial first equivalent resistance are greater than a tolerance value, if most
The difference of new first equivalent resistance and initial first equivalent resistance is greater than the tolerance value, stops providing the charging current
Or change and charged with being less than the charging current of the preset charged electric current of the corresponding Charging Specification, if it is newest this first etc.
The difference of effect resistance and initial first equivalent resistance is not greater than the tolerance value, according to newest first equivalent resistance, is somebody's turn to do
Charging current and the target charging voltage adjust the charging voltage at present.
19. the charging method of charger as claimed in claim 13, comprising:
According to from second connector one second chip provide a second voltage sensing signal, the current charging voltage with
And the current charging current calculates one second equivalent resistance and a third equivalent resistance, wherein second equivalent resistance is to correspond to
The resistance of section on the power bus between second chip and the charger, the third equivalent resistance are that the corresponding power supply is total
The resistance of section on line between first chip and second chip；And
It should according to the adjustment of second equivalent resistance, the third equivalent resistance, the current charging current and the target charging voltage
Charging voltage.
20. the charging method of charger as claimed in claim 19, wherein first chip detects corresponding first connector
Voltage on the power bus of position and generate the first voltage sensing signal, and transmitted by the data of first connector
The first voltage sensing signal is transmitted to the charger by pin, which detects being somebody's turn to do for the corresponding second connector position
Voltage on power bus and generate the second voltage sensing signal, and should by the data transmission connecting-leg of second connector
Second voltage sensing signal is transmitted to the charger.
21. the charging method of charger as claimed in claim 19, comprising:
The preset charge voltage and preset charged electricity of the corresponding Charging Specification data are provided according to a preset charged information
Stream.
22. the charging method of charger as claimed in claim 21, comprising:
The newest N number of first voltage sensing signal being detected and second voltage sensing signal are stored, wherein N is just greater than 1
Integer；
According to the current charging current, the current charging voltage, newest first voltage sensing signal being detected and this
Two voltage sense signals calculate newest second equivalent resistance and the newest third equivalent resistance；And
The sum of newest second equivalent resistance and the newest third equivalent resistance is calculated to obtain a newest resistance summation.
23. the charging method of charger as claimed in claim 22, comprising:
According to the preset charged electric current, the preset charge voltage, for the first time the first voltage sensing signal that is detected with should
Second voltage sensing signal calculates initial second equivalent resistance and the initial third equivalent resistance；
The sum of initial second equivalent resistance and the initial third equivalent resistance is calculated to obtain an initial resistance summation；With
And
Initial second equivalent resistance of storage and the initial third equivalent resistance.
24. the charging method of charger as claimed in claim 23, comprising:
Judge whether the newest resistance summation and the difference of the initial resistance summation are greater than a tolerance value, if the newest resistance summation
It is greater than the tolerance value with the difference of the initial resistance summation, stop providing the charging current or changes to be less than the corresponding Charging Specification
The charging current of the preset charged electric current charge, if the difference of the newest resistance summation and the initial resistance summation is not
Greater than the tolerance value, charging electricity is adjusted according to the newest resistance summation, the current charging current and the target charging voltage
Pressure.
25. a kind of power transmission controls chip, it is configured in a charger, which is suitable for filling an electronics by a cable
It sets and charges, wherein one end of the cable provides a target charging voltage to the electronic device by one first connector, is somebody's turn to do
The other end of cable couples the charger by one second connector, and power transmission control chip is configured to:
According to from first connector one first chip provide a first voltage sensing signal, current charging voltage and
Charging current calculates one first equivalent resistance at present, and according to first equivalent resistance, the current charging current and the target
Charging voltage adjusts the charging voltage of charger offer, and wherein first equivalent resistance is that a power supply of the corresponding cable is total
The resistance of section on line between first chip and the charger.
26. power transmission as claimed in claim 25 controls chip, wherein first chip detects corresponding first connector
Voltage on the power bus of position and generate the first voltage sensing signal, and transmitted by the data of first connector
The first voltage sensing signal is transmitted to the charger by pin.
27. power transmission as claimed in claim 25 controls chip, comprising:
One non-volatility memorizer, stores a preset charged information, which controls chip and pass through first connector
Data transmission connecting-leg receives the Charging Specification data of the electronic device, which controls chip according to the preset charged information
The preset charge voltage and a preset charged electric current of the corresponding Charging Specification data are provided.
28. power transmission as claimed in claim 27 controls chip further include:
One register stores the newest N number of first voltage sensing signal being detected, and wherein N is the positive integer greater than 1, the electricity
Power transmission control chip is calculated according to the charging current, the charging voltage, newest first voltage sensing signal being detected
Newest first equivalent resistance.
29. power transmission as claimed in claim 28 controls chip, wherein power transmission control chip is preset according to this fills
It is equivalent that electric current, the preset charge voltage, the first voltage sensing signal that is detected for the first time calculate initial this first
Resistance, the register also store initial first equivalent resistance.
30. power transmission as claimed in claim 29 controls chip, wherein power transmission control chip judges newest be somebody's turn to do
Whether the difference of the first equivalent resistance and initial first equivalent resistance is greater than a tolerance value, if the newest first equivalent electricity
The difference of resistance and initial first equivalent resistance is greater than the tolerance value, which controls the chip controls charger and stop
The charging current is provided or is changed and is charged with being less than the charging current of the preset charged electric current of the corresponding Charging Specification, if
The difference of newest first equivalent resistance and initial first equivalent resistance is not greater than the tolerance value, power transmission control
Chip controls the charger tune according to newest first equivalent resistance, the current charging current and the target charging voltage
The whole charging voltage.
31. power transmission as claimed in claim 25 controls chip, wherein power transmission control chip also foundation, which comes from, is somebody's turn to do
A second voltage sensing signal, the current charging voltage and current charging electricity that one second chip of the second connector provides
One second equivalent resistance of stream calculation and a third equivalent resistance, wherein second equivalent resistance is to be somebody's turn to do on the corresponding power bus
The resistance of section between second chip and the charger, the third equivalent resistance are first chip on the corresponding power bus
The resistance of section between second chip, the power transmission control chip and according to second equivalent resistance, the thirds etc.
Effect resistance, the current charging current and the target charging voltage adjust the charging voltage of charger offer.
32. power transmission as claimed in claim 31 controls chip, wherein first chip detects corresponding first connector
Voltage on the power bus of position and generate the first voltage sensing signal, and transmitted by the data of first connector
The first voltage sensing signal is transmitted to the charger by pin, which detects being somebody's turn to do for the corresponding second connector position
Voltage on power bus and generate the second voltage sensing signal, and should by the data transmission connecting-leg of second connector
Second voltage sensing signal is transmitted to the charger.
33. power transmission as claimed in claim 31 controls chip, wherein the power transmission controls chip further include:
One non-volatility memorizer, stores a preset charged information, which controls chip and pass through first connector
The Charging Specification data that data transmission connecting-leg receives the electronic device control chip to the power transmission, which controls core
Piece provides the preset charge voltage and a preset charged electric current of the corresponding Charging Specification data according to the preset charged information.
34. power transmission as claimed in claim 33 controls chip, wherein the power transmission controls chip further include:
One register stores the newest N number of first voltage sensing signal being detected and second voltage sensing signal, and wherein N is
Positive integer greater than 1, the power transmission control chip according to the current charging current, the current charging voltage, it is newest be detected
The first voltage sensing signal and the second voltage sensing signal arrived calculates newest second equivalent resistance and is somebody's turn to do with newest
The sum of third equivalent resistance and newest second equivalent resistance of calculating and the newest third equivalent resistance is to obtain one most
New resistance summation.
35. power transmission as claimed in claim 34 controls chip, wherein power transmission control chip is preset according to this fills
Electric current, the preset charge voltage, the first voltage sensing signal and the second voltage sensing signal being detected for the first time
Initial second equivalent resistance and the initial third equivalent resistance are calculated, initial second equivalent resistance and initial is calculated
The third equivalent resistance sum to obtain an initial resistance summation, the register also store initial second equivalent resistance with
The initial third equivalent resistance.
36. power transmission as claimed in claim 35 controls chip, wherein power transmission control chip judges the newest electricity
Whether the difference of resistance summation and the initial resistance summation is greater than a tolerance value, if the newest resistance summation and the initial resistance summation
Difference be greater than the tolerance value, power transmission control chip controls charger, which stops providing, the charging current or to be changed to be less than
The charging current of the preset charged electric current of the Charging Specification is corresponded to charge, if the newest resistance summation and the initial electricity
The difference of resistance summation is not greater than the tolerance value, which controls chip according to the newest resistance summation, the current charging electricity
Stream and the target charging voltage control the charger and adjust the charging voltage.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662381616P | 2016-08-31 | 2016-08-31 | |
| US62/381,616 | 2016-08-31 | ||
| TW106106874A TWI627817B (en) | 2016-08-31 | 2017-03-02 | Charger and power delivery chip and charging method thereof |
| TW106106874 | 2017-03-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107104493A CN107104493A (en) | 2017-08-29 |
| CN107104493B true CN107104493B (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710161477.1A Active CN107104493B (en) | 2016-08-31 | 2017-03-17 | Charger and power transmission control chip and charging method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713627B (en) * | 2020-12-24 | 2023-04-18 | Oppo广东移动通信有限公司 | Voltage control method, voltage control device, storage medium, and electronic apparatus |
| CN116845998A (en) * | 2022-03-24 | 2023-10-03 | 华为技术有限公司 | Charging device, method and related equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080050882A (en) * | 2006-12-04 | 2008-06-10 | 한국철도기술연구원 | Fault detecting system of high voltage connector in rail cars and the method |
| CN104675389A (en) * | 2014-09-15 | 2015-06-03 | 北京精密机电控制设备研究所 | Composite high-speed collection and transmission system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101182890B1 (en) * | 2010-12-01 | 2012-09-13 | 삼성에스디아이 주식회사 | System for controlling charging of battery pack |
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2017
- 2017-03-17 CN CN201710161477.1A patent/CN107104493B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080050882A (en) * | 2006-12-04 | 2008-06-10 | 한국철도기술연구원 | Fault detecting system of high voltage connector in rail cars and the method |
| CN104675389A (en) * | 2014-09-15 | 2015-06-03 | 北京精密机电控制设备研究所 | Composite high-speed collection and transmission system |
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