CN106786849A - The method and device of voltage-drop compensation - Google Patents
The method and device of voltage-drop compensation Download PDFInfo
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- CN106786849A CN106786849A CN201611081672.5A CN201611081672A CN106786849A CN 106786849 A CN106786849 A CN 106786849A CN 201611081672 A CN201611081672 A CN 201611081672A CN 106786849 A CN106786849 A CN 106786849A
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- charging
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000005611 electricity Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910018095 Ni-MH Inorganic materials 0.000 description 2
- 229910018477 Ni—MH Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000008859 change Effects 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A kind of method and device of voltage-drop compensation, methods described includes：Default resistance value R is obtained, the default resistance value is the circuit resistance between charging chip and battery；Obtain the output voltage V and output current I of the charging chip；When constant-current charge is carried out to the battery, the output voltage of the charging chip is adjusted to V+I*R1, wherein the R1 is less than the R；Increase the R1, until the input voltage of the battery is equal to the rated voltage of the battery.The present invention can carry out more accurate compensation to the voltage drop of circuit between battery and charging chip, and can accelerate the speed that battery reaches rated voltage.
Description
Technical field
The present invention relates to charging technique field, and in particular to the method and dress of voltage-drop compensation in a kind of battery charging process
Put.
Background technology
In the circuit for attaching a battery to charger, because charging chip has a certain distance apart from battery battery core, this
The circuit of segment distance has certain resistance, causes to exist between the output voltage of charging chip and the input voltage of battery battery core
Voltage drop.A kind of existing voltage-drop compensation method is that the resistance for estimating a fixed value is compensated.This compensation way pair
The compensation of voltage drop is simultaneously inaccurate, may overcompensation or very few.If compensation is very few, the charging interval can be caused long；If
Overcompensation, can cause over-charging of battery, influence battery life.
The content of the invention
In view of the foregoing, it is necessary to propose a kind of method of voltage-drop compensation, can be between battery and charging chip
The voltage drop of circuit is more precisely compensated for, and can accelerate the speed that battery reaches rated voltage.
The first aspect of the application provides a kind of method of voltage-drop compensation, and methods described includes：
Default resistance value R is obtained, the default resistance value is the circuit resistance between charging chip and battery；
Obtain the output voltage V and output current I of the charging chip；
When constant-current charge is carried out to the battery, the output voltage of the charging chip is adjusted to V+I*R1, wherein
The R1 is less than the R；
Increase the R1, until the input voltage of the battery is equal to the rated voltage of the battery.
In alternatively possible implementation, the R1 is equal to R/2.
In alternatively possible implementation, the increase R1, until the input voltage of the battery is equal to described
The rated voltage of battery, including：
The R1 is increased into R2 every preset duration, until the input voltage of the battery is equal to the specified electricity of the battery
Pressure.
In alternatively possible implementation, the R2 is equal to (R-R1)/2.
In alternatively possible implementation, the default resistance value R is equal to 100 ohm.
The second aspect of the application provides a kind of device of voltage-drop compensation, and described device includes：
Acquiring unit, for obtaining default resistance value R, the default resistance value is between charging chip and battery
Circuit resistance；
The acquiring unit, is additionally operable to obtain the output voltage V and output current I of the charging chip；
Voltage-adjusting unit, for when constant-current charge is carried out to the battery, by the output voltage of the charging chip
Adjust to V+I*R1, wherein the R1 is less than the R；
Adjustment unit, for increasing the R1, until the input voltage of the battery is equal to the rated voltage of the battery.
In alternatively possible implementation, the R1 is equal to R/2.
In alternatively possible implementation, the adjustment unit specifically for：
The R1 is increased into R2 every preset duration, until the input voltage of the battery is equal to the specified electricity of the battery
Pressure.
In alternatively possible implementation, the R2 is equal to (R-R1)/2.
In alternatively possible implementation, the default resistance value R is equal to 100 ohm.
The present invention obtains default resistance value R, and the default resistance value is the circuit resistance between charging chip and battery
The discreet value of value；Obtain the output voltage V and output current I of the charging chip；When constant-current charge is carried out to the battery,
The output voltage of the charging chip is adjusted to V+I*R1, wherein the R1 is less than the R；Increase the R1, until described
The input voltage of battery is equal to the rated voltage of the battery.The present invention can be to the voltage of circuit between battery and charging chip
Drop is more precisely compensated for, and due to gradually increasing R1, namely offset voltage is gradually increased, thus accelerate electricity
Pond reaches the speed of rated voltage.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, embodiment will be described below needed for be used
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the method for the voltage-drop compensation that the embodiment of the present invention one is provided.
Fig. 2 is the structural representation of the device of the voltage-drop compensation that the embodiment of the present invention two is provided.
Fig. 3 is the structural representation of the electronic equipment of the method for realizing voltage-drop compensation that the embodiment of the present invention three is provided.
Main element symbol description
Electronic equipment 1
The device 10 of voltage-drop compensation
Storage device 20
Processing equipment 30
Acquiring unit 201
Voltage-adjusting unit 202
Adjustment unit 203
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
The present invention will be described in detail to apply example.It should be noted that in the case where not conflicting, embodiments herein and embodiment
In feature can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, and described embodiment is only
Only it is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Preferably, the method for voltage-drop compensation of the invention is performed by one or more electronic equipment.The electronics sets
It is standby be it is a kind of can be according to the instruction being previously set or store, the equipment that numerical computations and/or information processing are carried out automatically, its is hard
Part include but is not limited to microprocessor, application specific integrated circuit (Application Specific Integrated Circuit,
ASIC), programmable gate array (Field-Programmable Gate Array, FPGA), digital processing unit (Digital
Signal Processor, DSP), embedded device etc..
The electronic equipment may be, but not limited to, any one can pass through keyboard, mouse, remote control, touch with user
The mode such as plate or voice-operated device carries out the electronic product of man-machine interaction, for example, personal computer, panel computer, smart mobile phone, individual
Personal digital assistant (Personal Digital Assistant, PDA), game machine, IPTV (Internet
Protocol Television, IPTV), intellectual Wearable etc..
Embodiment one
Fig. 1 is the schematic flow sheet of the method for the voltage-drop compensation that the embodiment of the present invention one is provided.As shown in figure 1, the party
Method specifically includes following steps：
101：Default resistance value R is obtained, the default resistance value is the circuit resistance between charging chip and battery.
In the present embodiment, the battery can be lithium battery.
In other examples, the battery can be other kinds of battery, such as Ni-MH battery.
The charging chip is used to be managed the charging process of the battery.The charging chip can collect with battery
Into in electronic equipment (such as mobile terminal), the battery is the power electronic equipment.Or, the charging chip can be with
It is included in charging device, the charging device is separate with the battery.
The resistance between the charging chip and battery can be measured before battery charging, is obtained described default
Resistance value R.Or, the voltage and electric current between the charging chip and battery can be measured when the battery charges, according to
Ohm's law calculates the default resistance value R.
102：Obtain the output voltage V and output current I of the charging chip.
Testing equipment can be utilized to measure the output voltage V and output current I of the charging chip.For example, using general-purpose
Table measures the output voltage V and output current I of the charging chip.Or, can be the charging chip design voltage and electricity
Current detection circuit, the output voltage V and output current I of the charging chip are detected using the voltage and current detection circuit.
103：When constant-current charge is carried out to the battery, the output voltage of the charging chip is adjusted to V+I*R1,
Wherein, the R1 is less than the R.
In the present embodiment, the R1 can be equal to R/2, will the output voltage of the charging chip adjust to V+I*R/
2。
In other examples, the R1 can be other numerical value.For example, the R1 can be equal to R/3, will be described
The output voltage of charging chip is adjusted to V+I*R/3.
104：Increase the R1, until the input voltage of the battery is equal to the rated voltage of the battery.
The R1 can be increased R2, in the present embodiment, the R2 can be equal to (R-R1)/2.I.e. described R1 is increased to
(R+R1)/2。
In other examples, the R2 can be equal to other numerical value, such as equal to (R-R1)/3.
The R1 can be increased every preset duration.For example, increasing the R1 every 5 minutes.
It should be noted that when the output voltage to charging chip is adjusted to V+I*R1, if the input voltage of battery is also
Not up to rated voltage, then can gradually increase R1 values, namely gradually increase offset voltage.
In embodiments of the present invention, default resistance value R can be equal to 100 ohm.Specifically, we can be with R/2 as base
Plinth carries out voltage compensation, and also as charging IC compensates the voltage of 50*I, and now the output voltage of charging IC is changed into V+50*I；Charge
If the input voltage of battery is also not up to rated voltage after Preset Time, then voltage compensation is carried out to charging IC, now can be with
Voltage compensation is carried out based on 3R/4, also as charging IC compensates the voltage of 75*I, now the output voltage of charging IC is changed into V
+75*I；If the input voltage of battery reaches rated voltage after charging Preset Time, continue to keep the output voltage V+ of charging IC
75*I, if the input voltage of battery is not up to rated voltage after charging Preset Time, continues to carry out voltage compensation to charging IC,
Voltage compensation can be now carried out based on 7R/8, also as charging IC compensates the voltage of 87.5*I, and now charging IC's is defeated
Go out voltage and be changed into V+87.5*I, rule carries out voltage compensation to charging IC successively.
The method of the voltage-drop compensation of embodiment one obtains default resistance value R, and the default resistance value is charging core
Circuit resistance between piece and battery；Obtain the output voltage V and output current I of the charging chip；Enter to the battery
During row constant-current charge, the output voltage of the charging chip is adjusted to V+I*R1, wherein the R1 is less than the R；Increase institute
R1 is stated, until the input voltage of the battery is equal to the rated voltage of the battery.Embodiment one can be to battery and charging core
The voltage drop of circuit is more precisely compensated between piece, and due to gradually increasing R1, namely gradually increase offset voltage,
Gradually increase the output voltage of charging chip, thus accelerate the speed that battery reaches rated voltage.
Embodiment two
Fig. 2 is the structural representation of the device of the voltage-drop compensation that the embodiment of the present invention two is provided.The voltage-drop compensation
Device 10 be installed in electronic equipment (such as mobile terminal).As shown in Fig. 2 the device 10 of the voltage-drop compensation can be wrapped
Include：Acquiring unit 201, voltage-adjusting unit 202, adjustment unit 203.
Acquiring unit 201, for obtaining default resistance value R, the default resistance value be charging chip and battery it
Between circuit resistance.
In the present embodiment, the battery can be lithium battery, and the default resistance value can be 100 ohm.
In other examples, the battery can be other kinds of battery, such as Ni-MH battery.
The charging chip is used to be managed the charging process of the battery.The charging chip can collect with battery
Into in electronic equipment (such as mobile terminal), the battery is the power electronic equipment.Or, the charging chip can be with
It is included in charging device, the charging device is separate with the battery.
The resistance between the charging chip and battery can be measured before battery charging, is obtained described default
Resistance value R.Or, the voltage and electric current between the charging chip and battery can be measured when the battery charges, according to
Ohm's law calculates the default resistance value R.
Acquiring unit 201, is additionally operable to obtain the output voltage V and output current I of the charging chip.
Testing equipment can be utilized to measure the output voltage V and output current I of the charging chip.For example, using general-purpose
Table measures the output voltage V and output current I of the charging chip.Or, can be the charging chip design voltage and electricity
Current detection circuit, the output voltage V and output current I of the charging chip are detected using the voltage and current detection circuit.
Voltage-adjusting unit 202, for when constant-current charge is carried out to the battery, by the output electricity of the charging chip
Pressure is adjusted to V+I*R1, wherein, the R1 is less than the R.
In the present embodiment, the R1 can be equal to R/2, will the output voltage of the charging chip adjust to V+I*R/
2。
In other examples, the R1 can be other numerical value.For example, the R1 can be equal to R/3, will be described
The output voltage of charging chip is adjusted to V+I*R/3.
Adjustment unit 203, for increasing the R1, until whether the input voltage of the battery is equal to the volume of the battery
Determine voltage.
The R1 can be increased R2, in the present embodiment, the R2 can be equal to (R-R1)/2.I.e. described R1 is increased to
(R+R1)/2。
In other examples, the R2 can be equal to other numerical value, such as equal to (R-R1)/3.
The R1 can be increased every preset duration.For example, increasing the R1 every 5 minutes.
After the R1 increases, the output voltage of the charging chip accordingly increases.If for example, the R1 increases to (R+
R1)/2, the output voltage of the charging chip accordingly increases to V+I* (R+R1)/2.
In embodiments of the present invention, default resistance value R can be equal to 100 ohm.Specifically, we can be with R/2 as base
Plinth carries out voltage compensation, and also as charging IC compensates the voltage of 50*I, and now the output voltage of charging IC is changed into V+50*I；Charge
If the input voltage of battery is also not up to rated voltage after Preset Time, then voltage compensation is carried out to charging IC, now can be with
Voltage compensation is carried out based on 3R/4, also as charging IC compensates the voltage of 75*I, now the output voltage of charging IC is changed into V
+75*I；If the input voltage of battery reaches rated voltage after charging Preset Time, continue to keep the output voltage V+ of charging IC
75*I, if the input voltage of battery is not up to rated voltage after charging Preset Time, continues to carry out voltage compensation to charging IC,
Voltage compensation can be now carried out based on 7R/8, also as charging IC compensates the voltage of 87.5*I, and now charging IC's is defeated
Go out voltage and be changed into V+87.5*I, rule carries out voltage compensation to charging IC successively.
The device of the voltage-drop compensation of embodiment two obtains default resistance value R, and the default resistance value is charging core
Circuit resistance between piece and battery；Obtain the output voltage V and output current I of the charging chip；Enter to the battery
During row constant-current charge, the output voltage of the charging chip is adjusted to V+I*R1, wherein the R1 is less than the R；Increase institute
R1 is stated, until the input voltage of the battery is equal to the rated voltage of the battery.Embodiment two can be to battery and charging core
The voltage drop of circuit is more precisely compensated between piece, and due to gradually increasing R1, namely gradually increase offset voltage,
Gradually increase the output voltage of charging chip, thus accelerate the speed that battery reaches rated voltage.
Embodiment three
Fig. 3 is that the structure of the electronic equipment of the method for the realization voltage-drop compensation of the present invention that the embodiment of the present invention three is provided is shown
It is intended to.The electronic equipment 1 includes the device 10 of voltage-drop compensation.The electronic equipment 1 also includes that storage device 20, treatment set
Standby 30.
Preferably, the device that the method for voltage-drop compensation of the invention passes through the voltage-drop compensation in the electronic equipment 1
10 realize.
The electronic equipment 1 be it is a kind of can according to the instruction being previously set or store, carry out automatically numerical computations and/or
The equipment of information processing, its hardware includes but is not limited to microprocessor, application specific integrated circuit (Application Specific
Integrated Circuit, ASIC), programmable gate array (Field-Programmable Gate Array, FPGA), number
Word processing device (Digital Signal Processor, DSP), embedded device etc..
The electronic equipment 1 may be, but not limited to, any one can pass through keyboard, mouse, remote control, touch with user
The mode such as plate or voice-operated device carries out the electronic product of man-machine interaction, for example, personal computer, panel computer, smart mobile phone, individual
Personal digital assistant (Personal Digital Assistant, PDA), game machine, IPTV (Internet
Protocol Television, IPTV), intellectual Wearable etc..
Network residing for the electronic equipment 1 includes, but are not limited to internet, wide area network, Metropolitan Area Network (MAN), LAN, virtual
Dedicated network (Virtual Private Network, VPN) etc..
The storage device 20 is used for the program code of each program segment in the device 10 for store the voltage-drop compensation.Institute
Stating storage device 20 can include：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, ROM), arbitrary access are deposited
Reservoir (Random Access Memory, RAM), magnetic disc or CD etc. are various can be with the medium of store program codes.
The processing equipment 30 can include one or more microprocessor, digital processing unit.The processing equipment 30
The program code of each program segment of the device 10 of the voltage-drop compensation is performed, default resistance value R is obtained, it is described default
Resistance value is the circuit resistance between charging chip and battery；Obtain the output voltage V and output current I of the charging chip；
When constant-current charge is carried out to the battery, the output voltage of the charging chip is adjusted to V+I*R1, wherein the R1 is small
In the R；Increase the R1, until the input voltage of the battery is equal to the rated voltage of the battery.The present invention can be right
The voltage drop of circuit is more precisely compensated between battery and charging chip, and due to gradually increasing R1, namely gradually increase
Large compensation voltage, also gradually increases the output voltage of charging chip, thus accelerates the speed that battery reaches rated voltage.
In several embodiments provided by the present invention, it should be understood that disclosed apparatus and method, can be by it
Its mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, only
Only a kind of division of logic function, can there is other dividing mode when actually realizing.
In addition, during each functional unit in each embodiment of the invention can be integrated in same treatment unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in same unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of software function module to realize.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires to be limited rather than described above, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as the claim involved by limitation.This
Outward, it is clear that " including " word is not excluded for other units or step, odd number is not excluded for plural number.The multiple stated in device claim
Unit or device can also be realized by same unit or device by software or hardware.The first, the second grade word is used for
Title is represented, and is not offered as any specific order.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although reference
Preferred embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to of the invention
Technical scheme is modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a kind of method of voltage-drop compensation, it is characterised in that methods described includes：
Default resistance value R is obtained, the default resistance value is the circuit resistance between charging chip and battery；
Obtain the output voltage V and output current I of the charging chip；
When constant-current charge is carried out to the battery, the output voltage of the charging chip is adjusted to V+I*R1, wherein described
R1 is less than the R；
Increase the R1, until the input voltage of the battery is equal to the rated voltage of the battery.
2. method according to claim 1, it is characterised in that the R1 is equal to R/2.
3. method according to claim 1 and 2, it is characterised in that the increase R1, until the input of the battery
Voltage is equal to the rated voltage of the battery, including：
The R1 is increased into R2 every preset duration, until the input voltage of the battery is equal to the rated voltage of the battery.
4. method according to claim 3, it is characterised in that the R2 is equal to (R-R1)/2.
5. method according to claim 1 and 2, it is characterised in that the default resistance value R is equal to 100 ohm.
6. a kind of device of voltage-drop compensation, it is characterised in that described device includes：
Acquiring unit, for obtaining default resistance value R, the default resistance value is the circuit between charging chip and battery
Resistance；
The acquiring unit, is additionally operable to obtain the output voltage V and output current I of the charging chip；
Voltage-adjusting unit, for when constant-current charge is carried out to the battery, the output voltage of the charging chip being adjusted
To V+I*R1, wherein the R1 is less than the R；
Adjustment unit, for increasing the R1, until the input voltage of the battery is equal to the rated voltage of the battery.
7. device according to claim 6, it is characterised in that the R1 is equal to R/2.
8. the device according to claim 6 or 7, it is characterised in that the adjustment unit specifically for：
The R1 is increased into R2 every preset duration, until the input voltage of the battery is equal to the rated voltage of the battery.
9. device according to claim 8, it is characterised in that the R2 is equal to (R-R1)/2.
10. the device according to claim 6 or 7, it is characterised in that the default resistance value R is equal to 100 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611081672.5A CN106786849A (en) | 2016-11-30 | 2016-11-30 | The method and device of voltage-drop compensation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611081672.5A CN106786849A (en) | 2016-11-30 | 2016-11-30 | The method and device of voltage-drop compensation |
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| CN201611081672.5A Pending CN106786849A (en) | 2016-11-30 | 2016-11-30 | The method and device of voltage-drop compensation |
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Application publication date: 20170531 |
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