CN107104469A - The electric supply installation and its method of charging current can be adjusted according to the pull down resistor value of mobile device - Google Patents
The electric supply installation and its method of charging current can be adjusted according to the pull down resistor value of mobile device Download PDFInfo
- Publication number
- CN107104469A CN107104469A CN201610093611.4A CN201610093611A CN107104469A CN 107104469 A CN107104469 A CN 107104469A CN 201610093611 A CN201610093611 A CN 201610093611A CN 107104469 A CN107104469 A CN 107104469A
- Authority
- CN
- China
- Prior art keywords
- charging
- mobile device
- pull
- pull down
- down resistor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- 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 electric supply installation and its method of charging current can be adjusted according to the pull down resistor value of mobile device the invention discloses a kind of, applied in a mobile device, provided with a transmission port and a rechargeable battery in the mobile device, and the transmission port is provided with a pull down resistor；The electric supply installation includes a charging port, one memory, one power unit and a control unit, and the charging port is provided with a pull-up resistor, when the charging port is electrically connected to the transmission port, the control unit can judge the partial pressure size of the pull-up resistor, and then it is inferred to the resistance value of pull down resistor, further according to a charging table of comparisons of memory memory storage, find out corresponding setting charging current, so, because the pull down resistor can be designed to corresponding with the specification of rechargeable battery easily, therefore, the electric supply installation can provide appropriate electric current to be charged according to this.
Description
Technical field
The power supply of charging current can be adjusted according to the pull down resistor value of mobile device the present invention relates to a kind of
Device and its method, particularly can make electric supply installation before being powered to a mobile device, first judge
The partial pressure size of a pull-up resistor in it, and then the pull down resistor being inferred in mobile device is big
It is small, and according to the one of the storage inside charging table of comparisons, confirm that mobile device institute is receptible most appropriate
Charging current.
Background technology
Press, with flourishing for microelectric technique, at present, various mobile devices are (such as：Intelligent hand
Machine, tablet PC, GPS navigation device, web camera ... etc.) turn into modern life
Indispensable important tool.In the case where people become increasingly dependent on for mobile device, mobile dress
Put " endurance " (that is, in the case where not charging, can continued operation time), be to turn into
One of the important references of user on choosing.Because the height of endurance depends entirely on " power consumption
Speed " and " battery capacity ", and it is many to be limited to production cost, device volume and radiating effect etc.
Design considers that dealer simultaneously can not make breakthrough change on this 2 points, therefore, has dealer " continuous
The ameliorative way of boat power " is placed on " charging rate ", and declares have " quick charge " (following
Referred to as fill soon) function.
Although there is many dealers all to declare that oneself mobile device has " filling soon " function on the market at present,
But it is a relative concept actually " to fill soon ", the speed this means, charged depends on power supply
" power ", and power is determined by " voltage " and " electric current " size powered, therefore, as long as moving
Charging circuit in dynamic device, can have preferably safe loading range, and user can pass through volume
Determine the higher charger of power, mobile device is charged, accelerated with reaching charging, shorten and charge
The effect of time.
For example：Traditional charging voltage and charging current is generally " 5 volts, 1 ampere ", and if factory
The mobile device and the charging voltage of charger and charging current that business A is produced for " 5.2 volts, 1.35
Ampere ", the charging voltage and charging current of manufacturer B designs are " 5 volts, 1.5 amperes ", then two
Person has " filling soon " function really.However, in the case where mobile device species is increasingly popularized,
User may carry five, six kind of mobile device simultaneously, but be institute only by single charger
Some mobile devices are charged, and virtually mobile device is being caused damage：With foregoing vendor A,
Exemplified by the mobile device of manufacturer B productions, if user is for the facility on carrying, all by vendor A
Charger, the mobile device to vendor A and manufacturer B charges, consequently, it is possible to manufacturer B
Mobile device be easy to because " charging voltage " exceed safe range, cause internal circuit be damaged.
Inventor has found that foregoing problems are because charger has no identification mechanism in itself, it is impossible to judged
Different vendor production mobile device in hardware differences, and also can not voluntarily adjust output voltage or
Current value, therefore, how the charger construction of pin at present is improved with its charging method, order charging
Device can voluntarily judge optimal charging modes, i.e., according to the mobile device of different hardware specification
Desire most ardently the major issue of solution herein as the present invention.
The content of the invention
In view of mobile device at present because its battery specifications is different, different labels are caused
" filling soon " charger can not be applied to all mobile devices, and damage is otherwise easily caused to mobile device
The problem of, inventor is by feat of practical experience for many years, to hardware configuration and the power supply electricity of charger
After road is analyzed and studied, a kind of of the present invention is designed finally can be according to the drop-down of mobile device electricity
The electric supply installation and its method of resistance adjustment charging current, the phase can solve foregoing of the prior art many
Shortcoming.
The purpose of the present invention is to provide a kind of can be adjusted according to the pull down resistor value of mobile device and charged
The electric supply installation of electric current and its method, using in a mobile device, one is provided with the mobile device
A transmission port in rechargeable battery, the mobile device is mutually electrically connected with the rechargeable battery, and thereon
Provided with a pull down resistor, the pull down resistor is connected to an earth terminal, and the electric supply installation includes a charging end
Mouth, a memory, a power unit are (such as：One supplying cell or a power receiver plug) and a control
Unit processed is (such as：Charging chip), the charging port can be directly or by a transmission line, with the transmission
Port is mutually electrically connected, and which is provided with a pull-up resistor, and the pull-up resistor is connected to a supply power supply；
The memory internal memory contains a charging table of comparisons, and the charging table of comparisons includes multiple setting resistance values (such as：
1 ohm, 2 ohm, 3 ohm), and each setting resistance value is respectively corresponding to setting charging electricity
Stream is (such as：1.5 amperes, 2.5 amperes, 3.5 amperes)；The power unit mutually electrically connects with the charging port
Connect, so that a charging current can be provided；The control unit respectively with the charging port, memory and electric power
Unit is mutually electrically connected, after the charging port and the transmission port of the mobile device are mutually electrically connected,
The control unit can read the partial pressure of the pull-up resistor, to calculate a pull down resistor of the pull down resistor
Value, further according to the pull down resistor value, from the charging table of comparisons, reads corresponding setting charging current,
And the size for the charging current that the power unit is exported is adjusted according to this, to be carried out to the rechargeable battery
Charging.In this way, because pull down resistor can be designed to relative with the hardware specification of rechargeable battery easily
Should, therefore, the electric supply installation can confirm that this fills by recognizing the resistance value size of the pull down resistor
The specifications data of battery are (such as：Battery capacity, the admissible charging voltage upper limit, it can allow
The charging current upper limit etc.), and find out an appropriate setting charging current, on the premise of safety,
Quickly the mobile device is charged.
Can have for ease of your auditor to technical characteristic, charging modes and its purpose of the present invention and more enter one
The understanding of step and understanding, hereby coordinate schema for embodiment, describe in detail as follows：
Brief description of the drawings
1st figure is the occupation mode schematic diagram of the electric supply installation of the present invention；
2nd figure is the internal structure schematic diagram of the electric supply installation of the present invention；And
3rd figure is the step schematic flow sheet of the method for supplying power to of the present invention.
【Main Reference Numerals explanation】
Electric supply installation ... ... 1
Charging port ... ... 11
Pull-up resistor ... ... 111
Detection unit ... ... 112
Memory ... ... 12
Charge the table of comparisons ... ... 121
Power unit ... ... 13
Control unit ... ... 14
Mobile device ... ... 2
Rechargeable battery ... ... 21
Transmission port ... ... 22
Pull down resistor ... ... 221
Transmission line ... ... L
Supply power supply ... ... V
Step ... ... 301~305
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific reality
Example is applied, and referring to the drawings, the present invention is described in further detail.
Inventor has found in research process, to make charger pick out the internal specifications of mobile device simultaneously
Not difficult, difficult is " how allowing different vendor all to use same discrimination method ", because each raw
Production mobile device manufacturer have the Design Thinking of oneself, some be related to business secret, some belong to city
Consider, some then be designer style, therefore, how to allow charger discrimination method both " letter
It is single " (that is, do not increase hardware cost or cause the computational load of microprocessor) and " easy to implement " is (i.e.,
Each manufacturer can easily implement in the case where not changing production line), it can say it is maximum obstacle.
Inventor is studying the mobile device of numerous labels on the market, matches somebody with somebody for its hardware structure, circuit
Put and basic software is analyzed, after simplifying, find either charger or mobile device, its
Inside all possesses and had " pull-up resistor " or " pull down resistor " mostly.Pull-up resistor (Pull-up resistors)
It is a kind of resistive element for being used to ensure that input signal is expected logic level, generally in different logics
Worked between device there is provided certain voltage signal, make a circuit be connected in not yet conducting outside one
During component, the pull-up resistor somewhat " can will draw high the logical signal of input ", make the circuit
Input belongs to " high impedance " by outside (this means, can be by input end by pull-up resistor
Voltage high to high level)；Conversely, after circuit turn-on externally connected component, you can cancel
The high level that the pull-up resistor is produced, accordingly, you can ensure no matter the input of the circuit whether there is conducting
Externally connected component, can all keep stable logic level.
The function and pull-up resistor phase of pull down resistor (Pull-down resistor, also known as land resistance)
Together, its difference is：Pull-up resistor is that one end connection circuit, the other end are connected to a supply power end,
" can draw high input voltage signal ", and pull down resistor is then one end connection circuit, other end company
Earth terminal is connected to, so that the logical signal of the input of circuit is maintained close to zero volt.Inventor recognizes
For, pull-up resistor and pull down resistor, exactly a kind of reference element that can be used for recognizing, hereby explanation is as after.
Refer to shown in Fig. 1, it is the first preferred embodiment of the electric supply installation 1 of the present invention, the confession
Electric installation 1 is a portable power source, and can be electrically connected by a transmission line L to a mobile device 2,
Only, on actually implementing, a connection plug also can be directly designed on the electric supply installation 1, that need not lead to
Transmission line L is crossed, the mobile device is directly plugged to.
For ease of illustration technical characteristic of the invention, hereby by the electric supply installation 1 and the pass of mobile device 2
Bond structure is drawn in Fig. 2, and the special person of carrying is wanted herein, to keep simplifying for drawing, to highlight skill
Art emphasis, does not show the hardware configuration unrelated with charging technique (such as in fig. 2：Touch Screen,
Shell, loudspeaker etc.), or it has been evident as the circuit details of industry known technology.
Refer to shown in Fig. 1~2, the mobile device 2 at least includes a rechargeable battery 21 and a transmission
Port 22, wherein, the transmission port 22 can be USB interface, and which is provided with a pull down resistor 221,
The pull down resistor is connected to an earth terminal.The electric supply installation 1 includes a charging port 11, a memory
12nd, a power unit 13 and a control unit 14, the charging port 11 can be directly or by the transmission
Line L is mutually electrically connected with the transmission port 22, and which is provided with a pull-up resistor 111, the pull-up resistor
111 one end is connected to a supply power supply V.
The internal memory of memory 12 contains a charging table of comparisons 121, and the charging table of comparisons 121 includes multiple
Resistance value is set, and each setting resistance value is respectively corresponding to a setting charging current, for example：
" 1000 ohm 1.5 amperes ", " 2000 ohm 2.5 amperes ", " 3000 ohm 3.5 amperes ",
But setting resistance value is not limited thereto with setting the corresponding relation of charging current, is also designed to " setting
Resistance value is bigger, and corresponding setting charging current is smaller ".Set resistance value and setting charging current
Corresponding relation is preferred with " waiting ratio " or " equal difference ", or can be presented in the way of a control formula, example
Such as：Charging the table of comparisons 121 in can only be stored with " 1000 ohm 1 ampere ", " 3000 ohm 3
Two pen datas of ampere ", in this way, when follow-up search, if setting resistance value as 2000 ohm,
Also it can calculate according to formula and set charging current as 2 amperes.
In the present embodiment, the power unit 13 is a supplying cell, can supply a charging current and give
The charging port 11；The control unit 14 then respectively with the charging port 11, memory 12 and electric power list
Member 13 is mutually electrically connected, mutually electric in the charging port 11 and the transmission port 22 of the mobile device 2
After gas connection, due to the pull-up resistor 111 and pull down resistor 221 can on same circuit, therefore,
The control unit 14 will be enabled through reading or pick out the partial pressure of the pull-up resistor 111, and then calculate
Go out a pull down resistor value size of the pull down resistor 221.
According to the pull down resistor value of the pull down resistor 221, the control unit 14 can be from the charging pair
According to table 121, corresponding setting charging current is read, and adjusts the power unit 13 according to this exported
The charging current size, charged with the rechargeable battery 21 to the mobile device 2.Due to,
The adjustment of pull down resistor 221 is not difficult for the production dealer of mobile device 2, can be easily
Change design, the configuration without significantly having influence on remaining element of the inside of mobile device 2, therefore,
As long as the resistance value of pull down resistor 221 regularly can correspond to the specification of the rechargeable battery 21 (i.e.,
Battery capacity, the voltage/current bound that can be charged safely), you can implement the technology of the present invention,
That is, the electric supply installation 1 is possible to judge rapidly and accurately the pull down resistor of the pull down resistor 221
Value, and according to the charging table of comparisons 121 being previously stored, find that the mobile device 2 is adapted to fills
Electric current.
Refer to shown in Fig. 1~3, can be to this for ease of your auditor and the personage of correlative technology field
The technology of invention, which has, more specifically to be recognized, hereby by taking the flow chart shown in Fig. 3 as an example, illustrates performing sheet
During the method for supplying power to of invention, the step performed by the control unit 14 is as follows：
(301) first, transmission port 22 phase of the charging port 11 with the mobile device 2 is confirmed
Electrical connection；
(302) then, the partial pressure of the pull-up resistor 111 is read；
(303) according to the partial pressure, a pull down resistor value of the pull down resistor 221 is calculated；
(304) further according to the pull down resistor value, from the charging table of comparisons 121, read corresponding one and set
Determine charging current；And
(305) according to the setting charging current read out, the institute of power unit 13 is adjusted according to this defeated
The size of the charging current gone out, to be charged to the rechargeable battery 21.
Refer to again shown in Fig. 1~2, in the present embodiment, the control unit 14 is single by a detection
Member 112 is (such as：One potentiometer), it is electrically connected to the other end of the pull-up resistor 111, makes the control
Unit 14 can receive the detection magnitude of voltage that the detection unit 112 is detected and returned, heir, the control
Unit 14 can calculate the supply power supply V and the detection unit 112 according to the detection magnitude of voltage
Between a voltage difference, the voltage difference is the partial pressure of the pull-up resistor 111, due to the supply power supply
V magnitude of voltage has been stored in the control unit 14 or memory 12, therefore, according to the partial pressure, control
Unit 14 processed can calculate the pull down resistor value of the pull down resistor 221.Also, the detection unit 112
Also it can be a feedback circuit, magnitude of voltage can be fed back to the control unit 14, and the control unit 14
Can for a tool galvanometer function control chip, the pull-up resistor can be confirmed according to the magnitude of voltage of feedback
111 partial pressure, and then the actuation voltage value of the pull down resistor 221 is extrapolated, and control charging electricity
The size of stream.
In the aforementioned embodiment, the power unit 13 is a supplying cell, still, the present invention's
In other preferred embodiments, the electric supply installation 1 also can be a charger, i.e. the power unit 13
It for a power receiver port, can be electrically connected to a power supply base, be filled with receiving external power, and producing
Electric current.
Particular embodiments described above, is carried out to the purpose of the present invention, technical scheme and beneficial effect
It is further described, it should be understood that the foregoing is only the specific embodiment of the present invention,
It is not intended to limit the invention, within the spirit and principles of the invention, any modification for being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (6)
1. a kind of can adjust the electric supply installation of charging current according to the pull down resistor value of mobile device, should
For a mobile device, a rechargeable battery is installed in the mobile device, one in the mobile device
Transmission port is mutually electrically connected with the rechargeable battery, and which is provided with a pull down resistor, the pull down resistor
An earth terminal is connected to, the electric supply installation includes：
One charging port, can mutually be electrically connected directly or by a transmission line with the transmission port, and thereon
Provided with a pull-up resistor, one end of the pull-up resistor is connected to a supply power supply；
One memory, is stored with a charging table of comparisons, and the charging table of comparisons includes multiple setting electricity
Resistance, and each setting resistance value is respectively corresponding to a setting charging current；
One power unit, can supply a charging current and give the charging port；And
One control unit, is mutually electrically connected with the charging port, memory and power unit respectively,
After the transmission port of the charging port and the mobile device is mutually electrically connected, the control unit can read this
The partial pressure of pull-up resistor, to calculate a pull down resistor value of the pull down resistor, further according to drop-down electricity
Resistance, from the charging table of comparisons, reads corresponding setting charging current, and adjust the electric power according to this
The size for the charging current that unit is exported, to be charged to the rechargeable battery.
2. charging current can be adjusted according to the pull down resistor value of mobile device as claimed in claim 1
Electric supply installation, it is characterised in that the control unit is by a detection unit, and electrical connection is on this
The other end of pull-up resistor, enables the control unit according to the voltage swing of the supply power supply and the detection list
The voltage swing that member is detected, confirms the partial pressure of the pull-up resistor.
3. charging current can be adjusted according to the pull down resistor value of mobile device as claimed in claim 2
Electric supply installation, it is characterised in that the power unit be a supplying cell.
4. charging current can be adjusted according to the pull down resistor value of mobile device as claimed in claim 2
Electric supply installation, it is characterised in that the power unit be a power receiver port, the power receiver port
It can be electrically connected to a power supply base.
5. a kind of can adjust the method for supplying power to of charging current according to the pull down resistor value of mobile device, should
For a mobile device and an electric supply installation, a rechargeable battery is installed in the mobile device, the shifting
A transmission port on dynamic device is mutually electrically connected with the rechargeable battery, and which is provided with a pull down resistor,
The pull down resistor is connected to an earth terminal；The electric supply installation includes a charging port, a memory, one
Power unit and a control unit, the charging port can be directly or by a transmission lines, with the transmission port
Mutually it is electrically connected, and which is provided with a pull-up resistor, one end of the pull-up resistor is connected to supply electricity
Source；The memory internal memory contains a charging table of comparisons, and the charging table of comparisons includes multiple setting resistance values,
And each setting resistance value is respectively corresponding to a setting charging current；The power unit can supply one and fill
Electric current gives the charging port；The control unit respectively with the charging port, memory and power unit phase
Electrical connection, the method for supplying power to makes the control unit perform the following steps：
In the case where the transmission port of the charging port and the mobile device is mutually electrically connected, reading should
The partial pressure of pull-up resistor；
According to the partial pressure, a pull down resistor value of the pull down resistor is calculated；
Further according to the pull down resistor value, from the charging table of comparisons, corresponding setting charging current is read；
And
According to the setting charging current read out, the charging that the power unit is exported is adjusted according to this
The size of electric current, to be charged to the rechargeable battery.
6. charging current can be adjusted according to the pull down resistor value of mobile device as claimed in claim 5
Method of supplying power to, it is characterised in that the control unit is electrically connected to the pull-up by a detection unit
The other end of resistance, and the control unit is through the following steps, calculates the partial pressure of the pull-up resistor：
Receive the detection magnitude of voltage that the detection unit is detected；And
According to the detection magnitude of voltage, the voltage difference between the supply power supply and the detection unit is calculated,
The voltage difference is the partial pressure of the pull-up resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093611.4A CN107104469A (en) | 2016-02-19 | 2016-02-19 | The electric supply installation and its method of charging current can be adjusted according to the pull down resistor value of mobile device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093611.4A CN107104469A (en) | 2016-02-19 | 2016-02-19 | The electric supply installation and its method of charging current can be adjusted according to the pull down resistor value of mobile device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107104469A true CN107104469A (en) | 2017-08-29 |
Family
ID=59658711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610093611.4A Pending CN107104469A (en) | 2016-02-19 | 2016-02-19 | The electric supply installation and its method of charging current can be adjusted according to the pull down resistor value of mobile device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107104469A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111959300A (en) * | 2020-07-16 | 2020-11-20 | 浙江吉智新能源汽车科技有限公司 | Charging environment determination method and device, battery management system and charging and replacing station |
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Application publication date: 20170829 |