CN106299512A - Charging method and device - Google Patents

Charging method and device Download PDF

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Publication number
CN106299512A
CN106299512A CN201610756609.0A CN201610756609A CN106299512A CN 106299512 A CN106299512 A CN 106299512A CN 201610756609 A CN201610756609 A CN 201610756609A CN 106299512 A CN106299512 A CN 106299512A
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China
Prior art keywords
constant
square wave
current
current charge
voltage
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Granted
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CN201610756609.0A
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CN106299512B (en
Inventor
杨大伟
王彦腾
解霏
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H02J7/0077—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The disclosure, about a kind of charging method and device, belongs to field of computer technology.Described method includes: when described magnitude of voltage is equal to described constant voltage threshold value, utilizing the first constant-current charge square wave is the charging of described battery, the first constant-current charge square wave in each cycle is made up of the second stage of the constant current amplitude that the first stage that electric current is zero and electric current are described first constant-current charge square wave, and described first stage is before described second stage, the magnitude of voltage of described battery reduced within the described first stage, and the magnitude of voltage of described battery increases in described second stage；When described magnitude of voltage is again equal to described constant voltage threshold value, described constant voltage threshold value is kept not become the charging of described battery, until the electricity of described battery reaches to stop during Full Charge Capacity, solve the magnitude of voltage of battery when equal to constant voltage threshold value, directly utilizing constant magnitude of voltage is the charging rate problem slowly that battery charging causes this battery, has reached the effect of the charging rate improving battery.

Description

Charging method and device
Technical field
It relates to field of computer technology, particularly to a kind of charging method and device.
Background technology
At present, the charging stage of the battery in terminal at least includes constant voltage charging phase.Constant voltage charging phase refers at electricity When the magnitude of voltage in pond reaches constant voltage threshold value, this constant voltage threshold value is kept not become the charging of this battery, until the electricity of this battery reaches Stop during Full Charge Capacity.Generally, the charging duration of constant voltage charging phase accounts for total the 30%～40% of duration that charges of this battery, its In, total charging duration of battery refers to the electricity charging duration by 0 sustainable growth to Full Charge Capacity of battery.
Summary of the invention
For solving the problem in correlation technique, present disclose provides a kind of charging method and device.
First aspect according to disclosure embodiment, it is provided that a kind of charging method, the method includes:
Determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
When magnitude of voltage is equal to constant voltage threshold value, the first constant-current charge square wave is utilized to charge for battery, the of each cycle One constant-current charge square wave is by the of the constant current amplitude that the first stage that electric current is zero and electric current are the first constant-current charge square wave Two-stage is constituted, and the first stage is before second stage, and the magnitude of voltage of battery reduced within the first stage, the magnitude of voltage of battery Increase in second stage；
When magnitude of voltage is again equal to constant voltage threshold value, constant voltage threshold value is kept not become battery charging, until the electricity of battery Reach to stop during Full Charge Capacity.
Optionally, the method also includes:
When magnitude of voltage is again equal to constant voltage threshold value, the first coefficient is utilized to reduce the constant current width of the first constant-current charge square wave Value, obtains the second constant-current charge square wave；
The relatively constant current amplitude of the second constant-current charge square wave and constant current threshold value；
When the constant current amplitude of the second constant-current charge square wave is more than or equal to constant current threshold value, by the second constant-current charge square wave As the first constant-current charge square wave, trigger the step performing to utilize the first constant-current charge square wave to charge for battery；
When the constant current amplitude of the second constant-current charge square wave is less than constant current threshold value, triggers and perform to keep constant voltage threshold value constant Charge for battery, until the electricity of battery reaches the step stopped during Full Charge Capacity.
Optionally, the method also includes:
When magnitude of voltage is again equal to constant voltage threshold value, the second coefficient is utilized to reduce the dutycycle of the first constant-current charge square wave Value, obtains the 3rd constant-current charge square wave, and dutyfactor value is the second stage of the first constant-current charge square wave in each cycle Duration accounts for the ratio of total duration of the first constant-current charge square wave in cycle；
The dutyfactor value of relatively the 3rd constant-current charge square wave and duty cycle threshold；
When the dutyfactor value of the 3rd constant-current charge square wave is more than or equal to duty cycle threshold, by the 3rd constant-current charge rectangle Ripple, as the first constant-current charge square wave, triggers the step performing to utilize the first constant-current charge square wave to charge for battery；
When the dutyfactor value of the 3rd constant-current charge square wave is less than duty cycle threshold, triggers and perform to keep constant voltage threshold value not Become battery charging, until the electricity of battery reaches the step stopped during Full Charge Capacity.
Optionally, the method also includes:
When magnitude of voltage is again equal to constant voltage threshold value, the first coefficient is utilized to reduce the constant current width of the first constant-current charge square wave Value, and utilize the second coefficient to reduce the dutyfactor value of the first constant-current charge square wave, obtain the 4th constant-current charge square wave, duty Ratio is the first constant-current charge square that the duration of the second stage of the first constant-current charge square wave in each cycle accounts for the cycle The ratio of total duration of shape ripple；
The relatively constant current amplitude of the 4th constant-current charge square wave and constant current threshold value, and compare the 4th constant-current charge square wave Dutyfactor value and duty cycle threshold；
In the constant current amplitude of the 4th constant-current charge square wave more than or equal to constant current threshold value, and the 4th constant-current charge square wave When dutyfactor value is more than or equal to duty cycle threshold, using the 4th constant-current charge square wave as the first constant-current charge square wave, trigger Perform the step utilizing the first constant-current charge square wave to charge for battery；
Constant current amplitude at the 4th constant-current charge square wave is less than constant current threshold value, and the duty of the 4th constant-current charge square wave When ratio is less than duty cycle threshold, triggers and perform to keep constant voltage threshold value not become battery charging, until the electricity of battery reaches full The step stopped during electricity.
Optionally, the method also includes:
In the constant current amplitude of the 4th constant-current charge square wave more than or equal to constant current threshold value, and the 4th constant-current charge square wave When dutyfactor value is less than duty cycle threshold, the constant current amplitude keeping the 4th constant-current charge square wave is constant, and the 4th constant current is filled The dutyfactor value of electricity square wave adjusts to duty cycle threshold, obtains the 5th constant-current charge square wave, by the 5th constant-current charge rectangle Ripple, as the first constant-current charge square wave, triggers the step performing to utilize the first constant-current charge square wave to charge for battery；
Constant current amplitude at the 4th constant-current charge square wave is less than constant current threshold value, and the duty of the 4th constant-current charge square wave When ratio is more than or equal to duty cycle threshold, by the constant current range-adjusting of the 4th constant-current charge square wave to constant current threshold value, and keep The dutyfactor value of the 4th constant-current charge square wave is constant, obtains the 6th constant-current charge square wave, by the 6th constant-current charge square wave As the first constant-current charge square wave, trigger the step performing to utilize the first constant-current charge square wave to charge for battery.
Optionally, the duration in the cycle of the first different constant-current charge square waves is identical.
Optionally, the method also includes:
Determine that whether the current magnitude of voltage of battery is more than or equal to setting voltage value；
When the magnitude of voltage that battery is current is more than or equal to setting voltage value, the constant electric current that sets is utilized to charge as battery, Trigger and perform to determine that the current magnitude of voltage of battery is whether equal to the step of constant voltage threshold value.
Second aspect according to disclosure embodiment, it is provided that a kind of charging device, this device includes:
First determines module, is configured to determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
Square wave charging module, is configured to when first determines that module determines that magnitude of voltage is equal to constant voltage threshold value, utilizes First constant-current charge square wave is battery charging, and the first constant-current charge square wave in each cycle is the first stage of zero by electric current Constitute with the second stage of the constant current amplitude that electric current is the first constant-current charge square wave, and the first stage be before second stage, The magnitude of voltage of battery reduced within the first stage, and the magnitude of voltage of battery increases in second stage；
Constant-voltage charge module, is configured as magnitude of voltage when being again equal to constant voltage threshold value, keeps constant voltage threshold value not become electricity Charge in pond, until the electricity of battery reaches to stop during Full Charge Capacity.
Optionally, this device also includes:
First adjusting module, is configured as magnitude of voltage when being again equal to constant voltage threshold value, utilizes the first coefficient to reduce first The constant current amplitude of constant-current charge square wave, obtains the second constant-current charge square wave；
First comparison module, is configured to compare the constant current width of the second constant-current charge square wave that the first adjusting module obtains Value and constant current threshold value；
First trigger module, is configured in the perseverance that the comparative result of the first comparison module is the second constant-current charge square wave When stream amplitude is more than or equal to constant current threshold value, using the second constant-current charge square wave as the first constant-current charge square wave, trigger rectangle Ripple charging module performs the step utilizing the first constant-current charge square wave to charge for battery；
Second trigger module, is configured in the perseverance that the comparative result of the first comparison module is the second constant-current charge square wave When stream amplitude is less than constant current threshold value, triggers constant-voltage charge module and perform to keep constant voltage threshold value not become battery charging, until battery The step that stops when reaching Full Charge Capacity of electricity.
Optionally, this device also includes:
Second adjusting module, is configured as magnitude of voltage when being again equal to constant voltage threshold value, utilizes the second coefficient to reduce first The dutyfactor value of constant-current charge square wave, obtains the 3rd constant-current charge square wave, and dutyfactor value is first constant current in each cycle The duration of the second stage of charging square wave accounts for the ratio of total duration of the first constant-current charge square wave in cycle；
Second comparison module, is configured to compare the dutycycle of the 3rd constant-current charge square wave that the second adjusting module obtains Value and duty cycle threshold；
3rd trigger module, being configured at the comparative result of the second comparison module is accounting for of the 3rd constant-current charge square wave When empty ratio is more than or equal to duty cycle threshold, using the 3rd constant-current charge square wave as the first constant-current charge square wave, trigger square Shape ripple charging module performs the step utilizing the first constant-current charge square wave to charge for battery；
4th trigger module, being configured at the comparative result of the second comparison module is accounting for of the 3rd constant-current charge square wave When empty ratio is less than duty cycle threshold, triggers constant-voltage charge module and perform to keep constant voltage threshold value not become battery charging, until electric The electricity in pond reaches the step stopped during Full Charge Capacity.
Optionally, this device also includes:
3rd adjusting module, is configured as magnitude of voltage when being again equal to constant voltage threshold value, utilizes the first coefficient to reduce first The constant current amplitude of constant-current charge square wave, and utilize the second coefficient to reduce the dutyfactor value of the first constant-current charge square wave, obtain 4th constant-current charge square wave, dutyfactor value is the duration of the second stage of the first constant-current charge square wave in each cycle Account for the ratio of total duration of the first constant-current charge square wave in cycle；
3rd comparison module, is configured to compare the constant current of the 4th constant-current charge square wave that the 3rd adjusting module obtains Amplitude and constant current threshold value, and compare dutyfactor value and the duty cycle threshold of the 4th constant-current charge square wave；
5th trigger module, is configured to the perseverance that comparative result is the 4th constant-current charge square wave at the 3rd comparison module Stream amplitude is more than or equal to constant current threshold value, and when the dutyfactor value of the 4th constant-current charge square wave is more than or equal to duty cycle threshold, will 4th constant-current charge square wave, as the first constant-current charge square wave, triggers square wave charging module and performs to utilize the first constant current to fill Electricity square wave is the step of battery charging；
6th trigger module, is configured to the perseverance that comparative result is the 4th constant-current charge square wave at the 3rd comparison module Stream amplitude is less than constant current threshold value, and when the dutyfactor value of the 4th constant-current charge square wave is less than duty cycle threshold, triggers constant voltage and fill Electricity module performs to keep constant voltage threshold value not become battery charging, until the electricity of battery reaches the step stopped during Full Charge Capacity.
Optionally, this device also includes:
7th trigger module, is configured to the perseverance that comparative result is the 4th constant-current charge square wave at the 3rd comparison module Stream amplitude more than or equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge square wave less than duty cycle threshold time, keep the The constant current amplitude of four constant-current charge square waves is constant, and adjusts the dutyfactor value of the 4th constant-current charge square wave to dutycycle threshold Value, obtains the 5th constant-current charge square wave, using the 5th constant-current charge square wave as the first constant-current charge square wave, triggers rectangle Ripple charging module performs the step utilizing the first constant-current charge square wave to charge for battery；
8th trigger module, is configured to the perseverance that comparative result is the 4th constant-current charge square wave at the 3rd comparison module Stream amplitude is less than constant current threshold value, and when the dutyfactor value of the 4th constant-current charge square wave is more than or equal to duty cycle threshold, by the 4th The constant current range-adjusting of constant-current charge square wave is to constant current threshold value, and keeps the dutyfactor value of the 4th constant-current charge square wave not Become, obtain the 6th constant-current charge square wave, using the 6th constant-current charge square wave as the first constant-current charge square wave, trigger rectangle Ripple charging module performs the step utilizing the first constant-current charge square wave to charge for battery.
Optionally, the duration in the cycle of the first different constant-current charge square waves is identical.
Optionally, this device also includes:
Second determines module, is configured to determine that whether the current magnitude of voltage of battery is more than or equal to setting voltage value；
Constant-current charge module, is configured as second and determines that module determines the current magnitude of voltage of battery more than or equal to setting During magnitude of voltage, utilize the constant electric current that sets to charge as battery, trigger first and determine that module performs to determine the voltage that battery is current Whether value is equal to the step of constant voltage threshold value.
The third aspect according to disclosure embodiment, it is provided that a kind of charging device, this device includes:
Processor；
For storing the memorizer of processor executable；
Wherein, processor is configured to:
Determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
When magnitude of voltage is equal to constant voltage threshold value, the first constant-current charge square wave is utilized to charge for battery, the of each cycle One constant-current charge square wave is by the of the constant current amplitude that the first stage that electric current is zero and electric current are the first constant-current charge square wave Two-stage is constituted, and the first stage is before second stage, and the magnitude of voltage of battery reduced within the first stage, the magnitude of voltage of battery Increase in second stage；
When magnitude of voltage is again equal to constant voltage threshold value, constant voltage threshold value is kept not become battery charging, until the electricity of battery Reach to stop during Full Charge Capacity.
Embodiment of the disclosure that the technical scheme of offer can include following beneficial effect:
By when the magnitude of voltage of battery is equal to constant voltage threshold value, the first constant-current charge square wave is utilized to charge for battery, its In, the first constant-current charge square wave in each cycle makes the magnitude of voltage of battery first be gradually reduced to be gradually increased again, when this first When constant-current charge square wave makes the magnitude of voltage of battery be again equal to constant voltage threshold value, keep constant voltage threshold value not become this battery and fill Electricity, owing to the speed that charger utilizing the first constant-current charge square wave is battery charging is charged for battery than with constant magnitude of voltage Speed fast, therefore, solve the magnitude of voltage of battery when equal to constant voltage threshold value, directly utilizing constant magnitude of voltage is that battery fills Conductance causes the charging rate problem slowly of this battery, has reached the effect of the charging rate improving battery.
During further, since be charged with bigger constant current versus cell, battery fill a battery core it may happen that Ohmic polarization phenomenon, and along with the electricity of battery increases, the speed that this ohmic polarization phenomenon occurs is the fastest, therefore, by along with The electricity of battery is gradually increased, and the constant current amplitude controlling the first constant-current charge square wave is gradually reduced, and solves along with battery holds The increase of amount, the ohmic polarization phenomenon of the charging battery core of this battery seriously causes the problem shortened the service life of this battery, reaches To on the premise of improve the charging rate of battery, do not affect the effect in the service life of battery.
During further, since be charged with the constant current versus cell that duration is longer, battery fill a battery core can Concentration polarization phenomenon or activation polarization phenomenon can occur, and along with the electricity of battery increases, this concentration polarization phenomenon or electricity The speed that chemical polarization phenomenon occurs is the fastest, therefore, along with the electricity of battery is gradually increased, controls the first constant-current charge square wave Dutycycle be gradually reduced, solve the increase along with battery capacity, the concentration polarization of the charging battery core of this battery or electrochemistry Polarization phenomena seriously cause the problem shortened the service life of this battery, on the premise of improve the charging rate of battery, protect Demonstrate,prove the service life of battery.
It should be appreciated that it is only exemplary that above general description and details hereinafter describe, can not be limited this Open.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes a part for present disclosure specification, it is shown that meet the disclosure Embodiment, and for explaining the principle of the disclosure together with description.
Fig. 1 is the flow chart according to a kind of charging method shown in an exemplary embodiment.
Fig. 2 is the flow chart according to the first charging method shown in an exemplary embodiment.
Fig. 3 is according to the first constant-current charge square wave shown in an exemplary embodiment and the second constant-current charge square wave Schematic diagram.
Fig. 4 is the change schematic diagram of the current value according to the charging process shown in an exemplary embodiment and magnitude of voltage.
Fig. 5 is the flow chart according to the second charging method shown in an exemplary embodiment.
Fig. 6 is according to the first constant-current charge square wave shown in an exemplary embodiment and the 3rd constant-current charge square wave Schematic diagram.
Fig. 7 is the change schematic diagram of the current value according to the charging process shown in an exemplary embodiment and magnitude of voltage.
Fig. 8 is the flow chart according to the third charging method shown in an exemplary embodiment.
Fig. 9 is according to the first constant-current charge square wave shown in an exemplary embodiment and the 4th constant-current charge square wave Schematic diagram.
Figure 10 is the change schematic diagram of the current value according to the charging process shown in an exemplary embodiment and magnitude of voltage.
Figure 11 is the block diagram according to a kind of charging device shown in an exemplary embodiment.
Figure 12 is the block diagram according to a kind of charging device shown in an exemplary embodiment.
Figure 13 is the block diagram according to a kind of device for charging shown in an exemplary embodiment.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Explained below relates to During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary embodiment Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they are only with the most appended The example of the apparatus and method that some aspects that described in detail in claims, the disclosure are consistent.
Fig. 1 is the flow chart according to a kind of charging method shown in an exemplary embodiment, and this charging method is applied to fill In electrical equipment, this charger at least includes charging circuit, as it is shown in figure 1, this charging method comprises the following steps.
In a step 101, determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value.
In a step 102, when magnitude of voltage is equal to constant voltage threshold value, the first constant-current charge square wave is utilized to charge for battery.
Wherein, the first constant-current charge square wave in each cycle is the first constant current by the first stage that electric current is zero and electric current The second stage of the constant current amplitude of charging square wave is constituted, and the first stage is before second stage, and the magnitude of voltage of battery is the Reducing in one stage, the magnitude of voltage of battery increases in second stage.
In step 103, when magnitude of voltage is again equal to constant voltage threshold value, constant voltage threshold value is kept not become battery charging, directly Electricity to battery reaches to stop during Full Charge Capacity.
In sum, the charging method that the disclosure provides, by when the magnitude of voltage of battery is equal to constant voltage threshold value, utilizing the One constant-current charge square wave is battery charging, and wherein, the first constant-current charge square wave in each cycle makes the magnitude of voltage of battery First it is gradually reduced and is gradually increased again, when this first constant-current charge square wave makes the magnitude of voltage of battery be again equal to constant voltage threshold value Time, keep constant voltage threshold value not become the charging of this battery, owing to charger utilizing the first constant-current charge square wave is battery charging Speed is faster than the speed charged for battery with constant magnitude of voltage, therefore, solves the magnitude of voltage of battery equal to constant voltage threshold value Time, directly utilizing constant magnitude of voltage is the charging rate problem slowly that battery charging causes this battery, has reached to improve electricity The effect of the charging rate in pond.
In the first implementation, charger resists electricity by the constant current amplitude adjusting the first constant-current charge square wave The ohmic polarization phenomenon of the charging battery core in pond, refer to the flow chart of the first charging method shown in Fig. 2, and this charging method should In charger, as in figure 2 it is shown, this charging method comprises the steps.
In step 201, determine that whether the current magnitude of voltage of battery is more than or equal to setting voltage value.
When charger starts to charge for battery, first can determine whether the magnitude of voltage that this battery is current.If the magnitude of voltage of battery is low In the predetermined threshold value that numerical value is less, such as: 2.1V (lies prostrate), now, the electricity of battery is the most relatively low, and charger can utilize constant Pre-charge current is battery charging so that the magnitude of voltage of battery is gradually increasing.Wherein, pre-charge current is the least, such as: 100mA (milliampere), the present embodiment size not to predetermined threshold value with charging current is construed as limiting.
After charger utilizing pre-charge current is battery charging, charger also needs to determine that the magnitude of voltage of this battery is the biggest In equal to setting voltage value.When the magnitude of voltage of battery is more than or equal to setting voltage value, charger performs step 202；At battery Magnitude of voltage less than setting voltage value time, charger uses pre-charge current to continue as battery charging, until charger detects The magnitude of voltage of this battery is more than or equal to performing step 202 during setting voltage value.
Wherein, charger determines whether the current magnitude of voltage of battery can wrap more than or equal to the implementation of setting voltage value Including but be not limited to: in the first implementation, charger obtains, every preset duration, the magnitude of voltage that battery is current, and by this electricity Pressure value compares with setting voltage value；In the second implementation, charger is provided for monitoring the voltage that battery is current The monitoring process of value, when the magnitude of voltage of battery is more than or equal to setting voltage value, this monitoring process is automatically by the magnitude of voltage of battery Notify to charger more than or equal to the event of setting voltage value.
In step 202., when the magnitude of voltage that battery is current is more than or equal to setting voltage value, constant setting electric current is utilized Charge for battery.
Charger utilize constant set electric current charge as battery time, the magnitude of voltage of this battery continues to rise.
In step 203, determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value.
Wherein, constant voltage threshold value is the maximum charging voltage value of battery.Charger constant sets electric current as battery utilizing During charging, determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value.When the magnitude of voltage that battery is current is equal to constant voltage threshold value, Charger performs step 204；When the current magnitude of voltage of battery is less than constant voltage threshold value, what charger utilizing was constant set electric current as Battery charges, until the magnitude of voltage of this battery is equal to performing step 204 during constant voltage threshold value.
Wherein, charger determine the current magnitude of voltage of battery whether can include equal to the implementation of constant voltage threshold value but not Being limited to: in the first implementation, charger obtains the current magnitude of voltage of battery every preset duration, and by this magnitude of voltage with Constant voltage threshold value compares；In the second implementation, charger is provided for monitoring the monitoring of the current magnitude of voltage of battery Process, when the magnitude of voltage of battery is equal to constant voltage threshold value, the magnitude of voltage of battery is equal to constant voltage threshold value by this monitoring process automatically Event notifies to charger voltage value.
In step 204, when magnitude of voltage is equal to constant voltage threshold value, the first constant-current charge square wave is utilized to charge for battery.
Wherein, the first constant-current charge square wave can be PWM (the Pulse Width that the microprocessor in charger generates Modulation, pulse width modulation) waveform.
When the magnitude of voltage of charger is equal to constant voltage threshold value, this charger utilizing numerical value is that the magnitude of voltage of constant voltage threshold value is for electric Charge in pond, then the charging current of this battery can be gradually reduced.Owing to the magnitude of voltage that charger utilizing is constant is filling of battery charging The electric current that electricity speed is more constant than charger utilizing is that the charging rate of battery charging is slow, and therefore, charger utilizing numerical value is constant voltage The magnitude of voltage of threshold value is the time longer charging rate that can affect this battery of battery charging.
In the present embodiment, when the magnitude of voltage of battery is equal to constant voltage threshold value, charger utilizes numerical value for constant voltage the most immediately The magnitude of voltage of threshold value is battery charging, but is battery charging, wherein, each cycle first with the first constant-current charge square wave First constant-current charge square wave is by the constant current amplitude that the first stage that electric current is zero and electric current are the first constant-current charge square wave Second stage is constituted, and the first stage is before second stage, and the magnitude of voltage of battery reduced within the first stage, the voltage of battery Value increases in second stage, and so, the constant electric current of charger utilizing stage is that this battery is charged, and accelerates electricity The charging rate in pond.
In step 205, when magnitude of voltage is again equal to constant voltage threshold value, the first coefficient is utilized to reduce the first constant-current charge square The constant current amplitude of shape ripple, obtains the second constant-current charge square wave.
Owing to the electricity of battery is the biggest, the constant charging current that charger utilizing is bigger is this electricity that battery charging causes The speed of the charging battery core generation ohmic polarization phenomenon in pond is the fastest, and therefore, along with the electricity of battery is gradually increased, charger needs The charging battery core generation ohmic polarization phenomenon of this battery is prevented by the constant current amplitude reducing the first constant-current charge square wave.
Wherein, the first coefficient can be any number more than 0 and less than 1, and such as: 0.4, now, charger is utilizing When first coefficient reduces the constant current amplitude of the first constant-current charge square wave, the constant current amplitude of the first constant-current charge square wave is multiplied by This first coefficient, obtains the second constant-current charge square wave, and constant current amplitude refers to the maximum of the electric current of the first constant-current charge square wave.
First coefficient can also be the positive number of the constant current amplitude being arbitrarily less than this first constant-current charge square wave, such as: 100mA, now, charger is when the constant current amplitude utilizing the first coefficient to reduce the first constant-current charge square wave, by the first constant current The constant current amplitude of charging square wave deducts this first coefficient, obtains the second constant-current charge square wave.
Refer to Fig. 3, it illustrates the first constant-current charge square wave and the schematic diagram of the second constant-current charge square wave, first The constant current amplitude of constant-current charge square wave 31 is 1000mA, and this constant current amplitude is deducted the first coefficient 100mA by charger, obtains perseverance Stream amplitude is the second constant-current charge square wave 32 of 900mA.
In step 206, constant current amplitude and the constant current threshold value of the second constant-current charge square wave are compared.
Constant current threshold value is the current value that the numerical value of user setup is less, such as: 100mA, when the second constant-current charge square wave Constant current amplitude more than or equal to constant current threshold value time, charger perform step 207；Constant current amplitude when the second constant-current charge square wave During less than constant current threshold value, illustrating that the electricity of battery has leveled off to Full Charge Capacity, charger performs step 208.
In step 207, when the constant current amplitude of the second constant-current charge square wave is more than or equal to constant current threshold value, permanent by second Current charge square wave, as the first constant-current charge square wave, performs step 204 again.
Now, first when the constant current Amplitude Ration last time magnitude of voltage of the first constant-current charge square wave reaches constant voltage threshold value is permanent The constant current amplitude of current charge square wave is little.
Optionally, the duration in the cycle of the first different constant-current charge square waves is identical, and wherein, different first is permanent Current charge square wave refers at least two group the first constant-current charge square waves that constant current amplitude is different.Such as: constant current amplitude is The duration in the cycle of the first constant-current charge square wave of 1000mA, with the first constant-current charge square that constant current amplitude is 900mA The duration in the cycle of shape ripple is identical.
In a step 208, when the constant current amplitude of the second constant-current charge square wave is less than constant current threshold value, constant voltage threshold value is kept Do not become battery charging, until the electricity of battery reaches to stop during Full Charge Capacity.
Refer to Fig. 4, it illustrates at charger during starting to charge to for battery terminate to charge for battery, electricity The charging current value in pond and the change schematic diagram of charging voltage value, when charger starts to charge for battery, the magnitude of voltage of this battery For 1.9V, less than predetermined threshold value 2.1V, the pre-charge current of charger utilizing 100mA is the charging of this battery, now, this battery Magnitude of voltage is gradually increasing.When the magnitude of voltage of battery rises to setting voltage value 2.8V, the setting electricity of charger utilizing 1000mA Flowing and charge for this battery, now, the magnitude of voltage of this battery continues to rise.When the magnitude of voltage of battery rises to constant voltage threshold value 4.4V Time, utilizing the first constant-current charge square wave that constant current amplitude is 900mA is the charging of this battery, and now, the magnitude of voltage of this battery exists First reduce in each cycle of the first constant-current charge square wave and increase afterwards.Have passed through first constant-current charge at least one cycle After square wave, when the magnitude of voltage of this battery rises to 4.4V again, the constant current amplitude of the first constant-current charge square wave is multiplied by First coefficient 0.9, obtains the second constant-current charge square wave that constant current amplitude is 810mA, and 810mA is more than constant current threshold value 100mA, will This second constant-current charge square wave, as the first constant-current charge square wave, continues as the charging of this battery, circulates above-mentioned steps, until The constant current amplitude of the second constant-current charge square wave stops less than during constant current threshold value, and now, charger utilizing numerical value is constant voltage threshold value The voltage of 4.4V is battery charging, and the charging current of this battery is gradually reduced.When charging current is reduced to current threshold 100mA Time, charger stops charging for this battery.
In sum, the charging method that the disclosure provides, by when the magnitude of voltage of battery is equal to constant voltage threshold value, utilizing the One constant-current charge square wave is battery charging, and wherein, the first constant-current charge square wave in each cycle makes the magnitude of voltage of battery First it is gradually reduced and is gradually increased again, when this first constant-current charge square wave makes the magnitude of voltage of battery be again equal to constant voltage threshold value Time, keep constant voltage threshold value not become the charging of this battery, owing to charger utilizing the first constant-current charge square wave is battery charging Speed is faster than the speed charged for battery with constant magnitude of voltage, therefore, solves the magnitude of voltage of battery equal to constant voltage threshold value Time, directly utilizing constant magnitude of voltage is the charging rate problem slowly that battery charging causes this battery, has reached to improve electricity The effect of the charging rate in pond.
During further, since be charged with bigger constant current versus cell, battery fill a battery core it may happen that Ohmic polarization phenomenon, and along with the electricity of battery increases, the speed that this ohmic polarization phenomenon occurs is the fastest, therefore, by along with The electricity of battery is gradually increased, and the constant current amplitude controlling the first constant-current charge square wave is gradually reduced, and solves along with battery holds The increase of amount, the ohmic polarization phenomenon of the charging battery core of this battery seriously causes the problem shortened the service life of this battery, reaches To on the premise of improve the charging rate of battery, do not affect the effect in the service life of battery.
In the second implementation, as the alternative steps of step 205-208, charger can be by adjusting first Electrical resistance method is filled concentration polarization phenomenon and the activation polarization phenomenon of a battery core by the dutyfactor value of constant-current charge square wave, its In, dutyfactor value is that the duration of the second stage of the first constant-current charge square wave in each cycle accounts for the first permanent of this cycle The ratio of total duration of current charge square wave.Refer to the flow chart of the second charging method shown in Fig. 5, in step After 204, the method includes:
In step 209, when magnitude of voltage is again equal to constant voltage threshold value, the second coefficient is utilized to reduce the first constant-current charge square The dutyfactor value of shape ripple, obtains the 3rd constant-current charge square wave.
When being charged due to the constant current versus cell longer with duration, the filling a battery core and may send out of battery Raw concentration polarization phenomenon or activation polarization phenomenon, and along with the electricity of battery increases, this concentration polarization phenomenon or electrochemistry pole The speed changing phenomenon generation is the fastest, therefore, is gradually increased by the electricity along with battery, controls the first constant-current charge square wave Dutycycle is gradually reduced, and solves the increase along with battery capacity, the concentration polarization of the charging battery core of this battery or electrochemistry pole Change the problem that phenomenon seriously causes shortening the service life of this battery, on the premise of improve the charging rate of battery, it is ensured that Service life of battery.
Wherein, the second coefficient is any number more than 0 and less than 1, such as: 0.4.Charger is utilizing the second coefficient contracting During the dutyfactor value of little first constant-current charge square wave, the dutyfactor value of the first constant-current charge square wave can be multiplied by this second Coefficient, obtains the second constant-current charge square wave, it is also possible to the dutyfactor value of the first constant-current charge square wave deducts this second is Number, obtains the second constant-current charge square wave.
Optionally, the duration in each cycle of the 3rd constant-current charge square wave and the first constant-current charge square wave is every The duration in individual cycle is equal.
Refer to Fig. 6, it illustrates the first constant-current charge square wave and the schematic diagram of the 3rd constant-current charge square wave, In the cycle 61 of one constant-current charge square wave, the duration of second stage 62 is 7s, and the duration in cycle 61 is 10s, then The dutyfactor value of this first constant-current charge square wave is 7/10=0.7；Charger is by the duty of this first constant-current charge square wave After ratio is multiplied by the second coefficient 0.9, the dutyfactor value obtaining the 3rd constant-current charge square wave is 0.63, when the 3rd constant-current charge When the duration in the cycle 63 of square wave is 10s, the duration of the second stage 64 in this cycle 63 is 0.63.
In step 210, dutyfactor value and the duty cycle threshold of the 3rd constant-current charge square wave are compared.
When the dutyfactor value of the 3rd constant-current charge square wave is more than or equal to duty cycle threshold, charger performs step 211； When the dutyfactor value of the 3rd constant-current charge square wave is less than duty cycle threshold, charger performs step 212.
In step 211, when the dutyfactor value of the 3rd constant-current charge square wave is more than or equal to duty cycle threshold, by the 3rd Constant-current charge square wave, as the first constant-current charge square wave, performs step 204 again.
Now, the dutyfactor value of the first constant-current charge square wave reaches the first perseverance during constant voltage threshold value than last magnitude of voltage The dutyfactor value of current charge square wave is little.
Optionally, the duration in the cycle of the first different constant-current charge square waves is identical, and wherein, different first is permanent Current charge square wave refers at least two group the first constant-current charge square waves that dutycycle is different.Such as: dutycycle is the first of 0.7 The duration in the cycle of constant-current charge square wave, with continuing of cycle of the first constant-current charge square wave that dutycycle is 0.63 Duration is identical.
In the step 212, when the dutyfactor value of the 3rd constant-current charge square wave is less than duty cycle threshold, constant voltage threshold is kept Value does not become battery charging, until the electricity of battery reaches to stop during Full Charge Capacity.
Refer to Fig. 7, it illustrates charger during starting to charge to for battery to terminate as battery charging, battery Charging current value and the change schematic diagram of charging voltage value, when charger starts to charge for battery, the magnitude of voltage of this battery is 1.9V, less than predetermined threshold value 2.1V, charger utilizing pre-charge current be this battery charging, now, the magnitude of voltage of this battery by Gradually rise.When the magnitude of voltage of battery rises to setting voltage value 2.8V, charger utilizing 1000mA set electric current as this electricity Charging in pond, now, the magnitude of voltage of this battery continues to rise.When the magnitude of voltage of battery rises to constant voltage threshold value 4.4V, utilization accounts for Empty ratio be the first constant-current charge square wave of 0.7 be the charging of this battery, now, the magnitude of voltage of this battery is at the first constant-current charge First reduce in each cycle of square wave and increase afterwards.After have passed through the first constant-current charge square wave at least one cycle, when When the magnitude of voltage of this battery rises to 4.4V again, the dutyfactor value of the first constant-current charge square wave is multiplied by the second coefficient 0.9, Obtaining the 3rd constant-current charge square wave that dutyfactor value is 0.63,0.63 is more than duty cycle threshold 0.5, by the 3rd constant-current charge Square wave, as the first constant-current charge square wave, continues as the charging of this battery, circulates above-mentioned steps, until the second constant-current charge square The dutyfactor value of shape ripple stops less than during duty cycle threshold, and now, charger utilizing numerical value is the magnitude of voltage of constant voltage threshold value 4.4V Charging for battery, the charging current of this battery is gradually reduced.When charging current is reduced to current threshold 100mA, charger stops Only charge for this battery.
In the third implementation, as the alternative steps of step 205-208, charger can be by reducing simultaneously Electrical resistance method is filled the ohmic polarization phenomenon of a battery core, concentration by the constant current amplitude of the first constant-current charge square wave and dutyfactor value Polarization phenomena and activation polarization phenomenon.Refer to the flow chart of the third charging method shown in Fig. 8, after step 204, The method includes:
In step 213, when magnitude of voltage is again equal to constant voltage threshold value, the first coefficient is utilized to reduce the first constant-current charge square The constant current amplitude of shape ripple, and utilize the second coefficient to reduce the dutyfactor value of the first constant-current charge square wave, obtain the 4th constant current and fill Electricity square wave.
Wherein, the description about the first coefficient refers to the embodiment described in Fig. 2, and the description about the second coefficient refers to Fig. 5 Described embodiment, therefore not to repeat here.
Optionally, the duration in each cycle of the 4th constant-current charge square wave and the first constant-current charge square wave is every The duration in individual cycle is equal.
Refer to Fig. 9, it illustrates the first constant-current charge square wave and the schematic diagram of the 4th constant-current charge square wave, first The constant current amplitude of constant-current charge square wave is 1000mA, and in the cycle 91 of the first constant-current charge square wave, second stage 92 Duration be 7s, the duration in cycle 91 is 10s, then the dutyfactor value of this first constant-current charge square wave is 7/10= 0.7；The constant current amplitude of this first constant-current charge square wave is deducted 100mA by charger, and dutyfactor value is multiplied by the second coefficient 0.9 After, the constant current amplitude obtaining the 4th constant-current charge square wave is 900mA, and dutyfactor value is 0.63, when the 4th constant-current charge square When the duration in the cycle 93 of shape ripple is 10s, the duration of the second stage 94 in this cycle 93 is 0.63.
In step 214, compare constant current amplitude and the constant current threshold value of the 4th constant-current charge square wave, and compare the 4th constant current The dutyfactor value of charging square wave and duty cycle threshold.
The constant current amplitude of the 4th constant-current charge square wave is more than or equal to constant current threshold value, and the accounting for of the 4th constant-current charge square wave When empty ratio is more than or equal to duty cycle threshold, charger performs step 215；When the constant current amplitude of the 4th constant-current charge square wave is big In equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge square wave less than duty cycle threshold time, charger performs step 216；When the constant current amplitude of the 4th constant-current charge square wave is less than constant current threshold value, and the dutyfactor value of the 4th constant-current charge square wave During more than or equal to duty cycle threshold, charger performs step 217；When the constant current amplitude of the 4th constant-current charge square wave is less than constant current Threshold value, and when the dutyfactor value of the 4th constant-current charge square wave is less than duty cycle threshold, charger performs step 218.
In step 215, the constant current amplitude at the 4th constant-current charge square wave is more than or equal to constant current threshold value, and the 4th constant current When the dutyfactor value of charging square wave is more than or equal to duty cycle threshold, using the 4th constant-current charge square wave as the first constant-current charge Square wave, performs step 204 again.
Optionally, the duration in the cycle of the first different constant-current charge square waves is identical, and wherein, different first is permanent Current charge square wave refers to that constant current amplitude is different, or, dutycycle is different, or, constant current amplitude and dutycycle are the most different extremely Few two group of first constant-current charge square wave.
In the step 216, the constant current amplitude at the 4th constant-current charge square wave is more than or equal to constant current threshold value, and the 4th constant current When the dutyfactor value of charging square wave is less than duty cycle threshold, the constant current amplitude keeping the 4th constant-current charge square wave is constant, and The dutyfactor value of the 4th constant-current charge square wave is adjusted to duty cycle threshold, obtains the 5th constant-current charge square wave, by the 5th Constant-current charge square wave, as the first constant-current charge square wave, performs step 204 again.
In step 217, the constant current amplitude at the 4th constant-current charge square wave is less than constant current threshold value, and the 4th constant-current charge When the dutyfactor value of square wave is more than or equal to duty cycle threshold, by the constant current range-adjusting of the 4th constant-current charge square wave to constant current Threshold value, and keep the dutyfactor value of the 4th constant-current charge square wave constant, obtain the 6th constant-current charge square wave, by the 6th constant current Charging square wave, as the first constant-current charge square wave, performs step 204 again.
In step 218, the constant current amplitude at the 4th constant-current charge square wave is less than constant current threshold value, and the 4th constant-current charge When the dutyfactor value of square wave is less than duty cycle threshold, constant voltage threshold value is kept not become battery charging, until the electricity of battery reaches Stop to during Full Charge Capacity.
Refer to Figure 10, it illustrates charger during starting to charge to for battery to terminate to charge for battery, electric The charging current value in pond and the change schematic diagram of charging voltage value, when charger starts to charge for battery, the magnitude of voltage of this battery For 1.9V, less than predetermined threshold value 2.1V, charger utilizing pre-charge current is the charging of this battery, now, the magnitude of voltage of this battery It is gradually increasing.When the magnitude of voltage of battery rises to setting voltage value 2.8V, charger utilizing 1000mA set electric current as should Battery charges, and now, the magnitude of voltage of this battery continues to rise.When the magnitude of voltage of battery rises to constant voltage threshold value 4.4V, utilize The first constant-current charge square wave that constant current amplitude is 1000mA, dutyfactor value is 0.7 is the charging of this battery, now, this battery Magnitude of voltage first reduces within each cycle of the first constant-current charge square wave and increases afterwards.Have passed through the first of at least one cycle After constant-current charge square wave, when the magnitude of voltage of this battery rises to 4.4V again, by the constant current of the first constant-current charge square wave Amplitude deducts 100mA, and dutyfactor value is multiplied by the second coefficient 0.9, obtain constant current amplitude be 900mA, dutyfactor value be 0.63 Four constant-current charge square waves, wherein, 900mA is more than constant current threshold value, and 0.63 is more than duty cycle threshold 0.5, by the 4th constant current Charging square wave, as the first constant-current charge square wave, continues as the charging of this battery, circulates above-mentioned steps, until the second constant current is filled The constant current amplitude of electricity square wave is less than constant current threshold value, and dutyfactor value stops less than during duty cycle threshold, now, and charger utilizing Numerical value be the magnitude of voltage of constant voltage threshold value 4.4V be battery charging, the charging current of this battery is gradually reduced.When charging current reduces During to current threshold 100mA, charger stops charging for this battery.
Figure 11 is the block diagram according to a kind of charging device shown in an exemplary embodiment, and this charging device is applied to charging In device, as shown in figure 11, this charging device includes: first determines module 1110, square wave charging module 1120 and constant-voltage charge Module 1130.
This first determines module 1110, is configured to determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
This square wave charging module 1120, is configured to determine that module 1110 determines that magnitude of voltage is equal to constant voltage threshold first During value, utilizing the first constant-current charge square wave to charge for battery, the first constant-current charge square wave in each cycle is zero by electric current First stage and the second stage of constant current amplitude that electric current is the first constant-current charge square wave constitute, and the first stage is second Before stage, the magnitude of voltage of battery reduced within the first stage, and the magnitude of voltage of battery increases in second stage；
This constant-voltage charge module 1130, is configured as magnitude of voltage when being again equal to constant voltage threshold value, keeps constant voltage threshold value not Become battery charging, until the electricity of battery reaches to stop during Full Charge Capacity.
In sum, the charging device that the disclosure provides, by when the magnitude of voltage of battery is equal to constant voltage threshold value, utilizing the One constant-current charge square wave is battery charging, and wherein, the first constant-current charge square wave in each cycle makes the magnitude of voltage of battery First it is gradually reduced and is gradually increased again, when this first constant-current charge square wave makes the magnitude of voltage of battery be again equal to constant voltage threshold value Time, keep constant voltage threshold value not become the charging of this battery, owing to charger utilizing the first constant-current charge square wave is battery charging Speed is faster than the speed charged for battery with constant magnitude of voltage, therefore, solves the magnitude of voltage of battery equal to constant voltage threshold value Time, directly utilizing constant magnitude of voltage is the charging rate problem slowly that battery charging causes this battery, has reached to improve electricity The effect of the charging rate in pond.
Figure 12 is the block diagram according to a kind of charging device shown in an exemplary embodiment, and this charging device is applied to charging In device, as shown in figure 12, this charging device includes: first determines module 1210, square wave charging module 1220 and constant-voltage charge Module 1230.
This first determines module 1210, is configured to determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
This square wave charging module 1220, is configured to determine that module 1210 determines that magnitude of voltage is equal to constant voltage threshold first During value, utilizing the first constant-current charge square wave to charge for battery, the first constant-current charge square wave in each cycle is zero by electric current First stage and the second stage of constant current amplitude that electric current is the first constant-current charge square wave constitute, and the first stage is second Before stage, the magnitude of voltage of battery reduced within the first stage, and the magnitude of voltage of battery increases in second stage；
This constant-voltage charge module 1230, is configured as magnitude of voltage when being again equal to constant voltage threshold value, keeps constant voltage threshold value not Become battery charging, until the electricity of battery reaches to stop during Full Charge Capacity.
Optionally, this device also includes: first adjusting module the 1240, first comparison module the 1250, first trigger module 1260 and second trigger module 1270.
This first adjusting module 1240, is configured as magnitude of voltage when being again equal to constant voltage threshold value, utilizes the first coefficient contracting The constant current amplitude of little first constant-current charge square wave, obtains the second constant-current charge square wave；
This first comparison module 1250, is configured to compare the second constant-current charge rectangle that the first adjusting module 1240 obtains The constant current amplitude of ripple and constant current threshold value；
This first trigger module 1260, being configured at the comparative result of the first comparison module 1250 is the second constant-current charge When the constant current amplitude of square wave is more than or equal to constant current threshold value, using the second constant-current charge square wave as the first constant-current charge rectangle Ripple, triggers the step that square wave charging module 1220 performs to utilize the first constant-current charge square wave to charge for battery；
This second trigger module 1270, being configured at the comparative result of the first comparison module 1250 is the second constant-current charge When the constant current amplitude of square wave is less than constant current threshold value, triggers constant-voltage charge module 1230 and perform to keep constant voltage threshold value not become battery Charging, until the electricity of battery reaches the step stopped during Full Charge Capacity.
Optionally, this device also includes: second adjusting module the 1280, second comparison module the 1290, the 3rd trigger module 1291, the 4th trigger module 1292.
This second adjusting module 1280, is configured as magnitude of voltage when being again equal to constant voltage threshold value, utilizes the second coefficient contracting The dutyfactor value of little first constant-current charge square wave, obtains the 3rd constant-current charge square wave, and dutyfactor value is the of each cycle The duration of the second stage of one constant-current charge square wave accounts for total duration of the first constant-current charge square wave in cycle Ratio；
This second comparison module 1290, is configured to compare the 3rd constant-current charge rectangle that the second adjusting module 1280 obtains The dutyfactor value of ripple and duty cycle threshold；
3rd trigger module 1291, being configured at the comparative result of the second comparison module 1290 is the 3rd constant-current charge When the dutyfactor value of square wave is more than or equal to duty cycle threshold, using the 3rd constant-current charge square wave as the first constant-current charge rectangle Ripple, triggers the step that square wave charging module 1220 performs to utilize the first constant-current charge square wave to charge for battery；
4th trigger module 1292, being configured at the comparative result of the second comparison module 1290 is the 3rd constant-current charge When the dutyfactor value of square wave is less than duty cycle threshold, triggers constant-voltage charge module 1230 and perform to keep constant voltage threshold value not become electricity Charge in pond, until the electricity of battery reaches the step stopped during Full Charge Capacity.
Optionally, this device also includes: the 3rd adjusting module the 1293, the 3rd comparison module the 1294, the 5th trigger module 1295, the 6th trigger module 1296.
3rd adjusting module 1293, is configured as magnitude of voltage when being again equal to constant voltage threshold value, utilizes the first coefficient contracting The constant current amplitude of little first constant-current charge square wave, and utilize the second coefficient to reduce the dutycycle of the first constant-current charge square wave Value, obtains the 4th constant-current charge square wave, and dutyfactor value is the second stage of the first constant-current charge square wave in each cycle Duration accounts for the ratio of total duration of the first constant-current charge square wave in cycle；
3rd comparison module 1294, is configured to compare the 4th constant-current charge square that the 3rd adjusting module 1293 obtains The constant current amplitude of shape ripple and constant current threshold value, and compare dutyfactor value and the duty cycle threshold of the 4th constant-current charge square wave；
5th trigger module 1295, being configured at the comparative result of the 3rd comparison module 1293 is the 4th constant-current charge The constant current amplitude of square wave is more than or equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge square wave is more than or equal to dutycycle During threshold value, using the 4th constant-current charge square wave as the first constant-current charge square wave, trigger square wave charging module 1220 and perform Utilize the step that the first constant-current charge square wave charges for battery；
6th trigger module 1296, being configured at the comparative result of the 3rd comparison module 1293 is the 4th constant-current charge The constant current amplitude of square wave is less than constant current threshold value, and when the dutyfactor value of the 4th constant-current charge square wave is less than duty cycle threshold, Trigger constant-voltage charge module 1230 to perform to keep constant voltage threshold value not become battery charging, during until the electricity of battery reaches Full Charge Capacity The step stopped.
Optionally, this device also includes: the 7th trigger module the 1297, the 8th trigger module 1298.
7th trigger module 1297, being configured at the comparative result of the 3rd comparison module 1293 is the 4th constant-current charge The constant current amplitude of square wave is more than or equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge square wave is less than duty cycle threshold Time, the constant current amplitude keeping the 4th constant-current charge square wave is constant, and is adjusted by the dutyfactor value of the 4th constant-current charge square wave To duty cycle threshold, obtain the 5th constant-current charge square wave, using the 5th constant-current charge square wave as the first constant-current charge rectangle Ripple, triggers the step that square wave charging module 1220 performs to utilize the first constant-current charge square wave to charge for battery；
8th trigger module 1298, being configured at the comparative result of the 3rd comparison module 1293 is the 4th constant-current charge The constant current amplitude of square wave is less than constant current threshold value, and the dutyfactor value of the 4th constant-current charge square wave is more than or equal to duty cycle threshold Time, by the constant current range-adjusting of the 4th constant-current charge square wave to constant current threshold value, and keep accounting for of the 4th constant-current charge square wave Empty ratio is constant, obtains the 6th constant-current charge square wave, using the 6th constant-current charge square wave as the first constant-current charge square wave, Trigger the step that square wave charging module 1220 performs to utilize the first constant-current charge square wave to charge for battery.
Optionally, the duration in the cycle of the first different constant-current charge square waves is identical.
Optionally, this device also includes: second determines module 1299, constant-current charge module 12991.
This second determines module 1299, is configured to determine that whether the current magnitude of voltage of battery is more than or equal to setting voltage Value；
This constant-current charge module 12991, is configured as second and determines that module 1299 determines the magnitude of voltage that battery is current During more than or equal to setting voltage value, utilize the constant electric current that sets to charge as battery, trigger first and determine that module 1210 performs really Determine whether the current magnitude of voltage of battery is equal to the step of constant voltage threshold value.
In sum, the charging device that the disclosure provides, by when the magnitude of voltage of battery is equal to constant voltage threshold value, utilizing the One constant-current charge square wave is battery charging, and wherein, the first constant-current charge square wave in each cycle makes the magnitude of voltage of battery First it is gradually reduced and is gradually increased again, when this first constant-current charge square wave makes the magnitude of voltage of battery be again equal to constant voltage threshold value Time, keep constant voltage threshold value not become the charging of this battery, owing to charger utilizing the first constant-current charge square wave is battery charging Speed is faster than the speed charged for battery with constant magnitude of voltage, therefore, solves the magnitude of voltage of battery equal to constant voltage threshold value Time, directly utilizing constant magnitude of voltage is the charging rate problem slowly that battery charging causes this battery, has reached to improve electricity The effect of the charging rate in pond.
During further, since be charged with bigger constant current versus cell, battery fill a battery core it may happen that Ohmic polarization phenomenon, and along with the electricity of battery increases, the speed that this ohmic polarization phenomenon occurs is the fastest, therefore, by along with The electricity of battery is gradually increased, and the constant current amplitude controlling the first constant-current charge square wave is gradually reduced, and solves along with battery holds The increase of amount, the ohmic polarization phenomenon of the charging battery core of this battery seriously causes the problem shortened the service life of this battery, reaches To on the premise of improve the charging rate of battery, do not affect the effect in the service life of battery.
During further, since be charged with the constant current versus cell that duration is longer, battery fill a battery core can Concentration polarization phenomenon or activation polarization phenomenon can occur, and along with the electricity of battery increases, this ohmic polarization phenomenon occurs Speed the fastest, therefore, be gradually increased by the electricity along with battery, control the dutycycle of the first constant-current charge square wave gradually Reducing, solve the increase along with battery capacity, concentration polarization or the activation polarization phenomenon of the charging battery core of this battery are serious Cause the problem that the service life of this battery shortens, on the premise of improve the charging rate of battery, it is ensured that making of battery Use the life-span.
About the device in above-described embodiment, wherein modules performs the concrete mode of operation in relevant the method Embodiment in be described in detail, explanation will be not set forth in detail herein.
The disclosure one exemplary embodiment provides a kind of charging device, it is possible to realize the charging method that the disclosure provides, This charging device includes: processor, for storing the memorizer of processor executable；
Wherein, processor is configured to:
Determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
When magnitude of voltage is equal to constant voltage threshold value, the first constant-current charge square wave is utilized to charge for battery, the of each cycle One constant-current charge square wave is by the of the constant current amplitude that the first stage that electric current is zero and electric current are the first constant-current charge square wave Two-stage is constituted, and the first stage is before second stage, and the magnitude of voltage of battery reduced within the first stage, the magnitude of voltage of battery Increase in second stage；
When magnitude of voltage is again equal to constant voltage threshold value, constant voltage threshold value is kept not become battery charging, until the electricity of battery Reach to stop during Full Charge Capacity.
Figure 13 is the block diagram according to a kind of device 1300 for charging shown in an exemplary embodiment.Such as, device 1300 can be charger or mobile charger.
With reference to Figure 13, device 1300 can include following one or more assembly: processes assembly 1302, regulated power supply 1304, constant-current control circuit 1306, limited-voltage control circuit 1308, in limited time control circuit 1310 and microcontroller 1312 form.
Process assembly 1302 and generally control the integrated operation of device 1300, such as control the switch of regulated power supply 1304, permanent Flow control circuit 1306, the on and off etc. of limited-voltage control circuit 1308, in limited time control circuit 1310, in this process assembly extremely Including microcontroller 1312 less, this microcontroller 1312 is used for generating PWN ripple.
Regulated power supply 1304 is for providing stable operational voltage value and sufficient charging current.
Constant-current control circuit 1306 is used for providing constant charging current.
Limited-voltage control circuit 1308 is within being limited in constant voltage threshold value by the charging voltage value of battery.
Control circuit 1310 is for controlling the charging duration of the constant-current charge of battery in limited time.
Those skilled in the art, after considering description and putting into practice disclosure herein, will readily occur to other reality of the disclosure Execute scheme.The application is intended to any modification, purposes or the adaptations of the disclosure, these modification, purposes or suitable The change of answering property is followed the general principle of the disclosure and includes the undocumented common knowledge or used in the art of the disclosure Use technological means.Description and embodiments is considered only as exemplary, and the true scope of the disclosure and spirit are by following right Requirement is pointed out.
It should be appreciated that the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and And various modifications and changes can carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.

Claims (15)

1. a charging method, it is characterised in that described method includes:
Determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
When described magnitude of voltage is equal to described constant voltage threshold value, utilizing the first constant-current charge square wave is the charging of described battery, each The first constant-current charge square wave in cycle is described first constant-current charge square wave by the first stage that electric current is zero and electric current The second stage of constant current amplitude is constituted, and the described first stage is before described second stage, and the magnitude of voltage of described battery is in institute Reducing in stating the first stage, the magnitude of voltage of described battery increases in described second stage；
When described magnitude of voltage is again equal to described constant voltage threshold value, described constant voltage threshold value is kept not become the charging of described battery, directly Electricity to described battery reaches to stop during Full Charge Capacity.
Method the most according to claim 1, it is characterised in that described method also includes:
When described magnitude of voltage is again equal to described constant voltage threshold value, the first coefficient is utilized to reduce described first constant-current charge square wave Constant current amplitude, obtain the second constant-current charge square wave；
The relatively constant current amplitude of described second constant-current charge square wave and constant current threshold value；
When the constant current amplitude of described second constant-current charge square wave is more than or equal to described constant current threshold value, described second constant current is filled Electricity square wave as described first constant-current charge square wave, triggers performing that described to utilize the first constant-current charge square wave be described electricity The step of pond charging；
When the constant current amplitude of described second constant-current charge square wave is less than described constant current threshold value, triggers and perform described in described holding Constant voltage threshold value does not become the charging of described battery, until the electricity of described battery reaches the step stopped during Full Charge Capacity.
Method the most according to claim 1, it is characterised in that described method also includes:
When described magnitude of voltage is again equal to described constant voltage threshold value, the second coefficient is utilized to reduce described first constant-current charge square wave Dutyfactor value, obtain the 3rd constant-current charge square wave, described dutyfactor value is the first constant-current charge square wave in each cycle The duration of described second stage account for the ratio of total duration of the first constant-current charge square wave in described cycle；
Compare dutyfactor value and the duty cycle threshold of described 3rd constant-current charge square wave；
When the dutyfactor value of described 3rd constant-current charge square wave is more than or equal to described duty cycle threshold, by described 3rd constant current Charging square wave as described first constant-current charge square wave, triggers performing that described to utilize the first constant-current charge square wave be described The step of battery charging；
When the dutyfactor value of described 3rd constant-current charge square wave is less than described duty cycle threshold, triggers and perform described holding institute State constant voltage threshold value and do not become the charging of described battery, until the electricity of described battery reaches the step stopped during Full Charge Capacity.
Method the most according to claim 1, it is characterised in that described method also includes:
When described magnitude of voltage is again equal to described constant voltage threshold value, the first coefficient is utilized to reduce described first constant-current charge square wave Constant current amplitude, and utilize the second coefficient to reduce the dutyfactor value of described first constant-current charge square wave, obtain the 4th constant current and fill Electricity square wave, described dutyfactor value is that the duration of the described second stage of the first constant-current charge square wave in each cycle accounts for The ratio of total duration of the first constant-current charge square wave in described cycle；
The relatively constant current amplitude of described 4th constant-current charge square wave and constant current threshold value, and relatively described 4th constant-current charge rectangle The dutyfactor value of ripple and duty cycle threshold；
Constant current amplitude at described 4th constant-current charge square wave is more than or equal to described constant current threshold value, and described 4th constant-current charge When the dutyfactor value of square wave is more than or equal to described duty cycle threshold, using described 4th constant-current charge square wave as described first Constant-current charge square wave, triggers and performs the described step utilizing the first constant-current charge square wave to be the charging of described battery；
Constant current amplitude at described 4th constant-current charge square wave is less than described constant current threshold value, and described 4th constant-current charge rectangle When the dutyfactor value of ripple is less than described duty cycle threshold, triggering execution described holding described constant voltage threshold value does not become described battery and fills Electricity, until the electricity of described battery reaches the step stopped during Full Charge Capacity.
Method the most according to claim 4, it is characterised in that described method also includes:
Constant current amplitude at described 4th constant-current charge square wave is more than or equal to described constant current threshold value, and described 4th constant-current charge When the dutyfactor value of square wave is less than described duty cycle threshold, keep the constant current amplitude of described 4th constant-current charge square wave not Become, and the dutyfactor value of described 4th constant-current charge square wave is adjusted to described duty cycle threshold, obtain the 5th constant-current charge Square wave, using described 5th constant-current charge square wave as described first constant-current charge square wave, triggers and performs described to utilize the One constant-current charge square wave is the step of described battery charging；
Constant current amplitude at described 4th constant-current charge square wave is less than described constant current threshold value, and described 4th constant-current charge rectangle When the dutyfactor value of ripple is more than or equal to described duty cycle threshold, by the constant current range-adjusting of described 4th constant-current charge square wave extremely Described constant current threshold value, and keep the dutyfactor value of described 4th constant-current charge square wave constant, obtain the 6th constant-current charge rectangle Ripple, using described 6th constant-current charge square wave as described first constant-current charge square wave, triggering execution is described utilizes the first perseverance Current charge square wave is the step of described battery charging.
6. according to the arbitrary described method of claim 1 to 5, it is characterised in that the week of the first different constant-current charge square waves The duration of phase is identical.
7. according to the arbitrary described method of claim 1 to 5, it is characterised in that described method also includes:
Determine that whether the current magnitude of voltage of described battery is more than or equal to setting voltage value；
When the current magnitude of voltage of described battery is more than or equal to described setting voltage value, utilizes and constant set electric current as described electricity Charging in pond, triggers and perform described to determine that the current magnitude of voltage of battery is whether equal to the step of constant voltage threshold value.
8. a charging device, it is characterised in that described device includes:
First determines module, is configured to determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
Square wave charging module, is configured to determine that module determines that described magnitude of voltage is equal to described constant voltage threshold value described first Time, utilizing the first constant-current charge square wave is the charging of described battery, and the first constant-current charge square wave in each cycle by electric current is The first stage of zero and electric current are that the second stage of the constant current amplitude of described first constant-current charge square wave is constituted, and described first Stage, the magnitude of voltage of described battery reduced within the described first stage, the magnitude of voltage of described battery before described second stage Increase in described second stage；
Constant-voltage charge module, is configured as described magnitude of voltage when being again equal to described constant voltage threshold value, keeps described constant voltage threshold value Do not become the charging of described battery, until the electricity of described battery reaches to stop during Full Charge Capacity.
Device the most according to claim 8, it is characterised in that described device also includes:
First adjusting module, is configured as described magnitude of voltage when being again equal to described constant voltage threshold value, utilizes the first coefficient to reduce The constant current amplitude of described first constant-current charge square wave, obtains the second constant-current charge square wave；
First comparison module, is configured to the perseverance of the described second constant-current charge square wave that the first adjusting module described in comparison obtains Stream amplitude and constant current threshold value；
First trigger module, being configured at the comparative result of described first comparison module is described second constant-current charge square wave Constant current amplitude more than or equal to described constant current threshold value time, using described second constant-current charge square wave as described first constant-current charge Square wave, triggers described square wave charging module and performs the described step utilizing the first constant-current charge square wave to be the charging of described battery Suddenly；
Second trigger module, being configured at the comparative result of described first comparison module is described second constant-current charge square wave Constant current amplitude less than described constant current threshold value time, trigger described constant-voltage charge module perform described holding described constant voltage threshold value constant Charge for described battery, until the electricity of described battery reaches the step stopped during Full Charge Capacity.
Device the most according to claim 8, it is characterised in that described device also includes:
Second adjusting module, is configured as described magnitude of voltage when being again equal to described constant voltage threshold value, utilizes the second coefficient to reduce The dutyfactor value of described first constant-current charge square wave, obtains the 3rd constant-current charge square wave, and described dutyfactor value is each week The duration of the described second stage of the first constant-current charge square wave of phase accounts for the first constant-current charge square wave in described cycle The ratio of total duration；
Second comparison module, is configured to accounting for of the described 3rd constant-current charge square wave that the second adjusting module described in comparison obtains Empty ratio and duty cycle threshold；
3rd trigger module, being configured at the comparative result of described second comparison module is described 3rd constant-current charge square wave Dutyfactor value more than or equal to described duty cycle threshold time, described 3rd constant-current charge square wave is filled as described first constant current Electricity square wave, trigger described square wave charging module perform described utilize the first constant-current charge square wave be described battery charging Step；
4th trigger module, being configured at the comparative result of described second comparison module is described 3rd constant-current charge square wave Dutyfactor value less than described duty cycle threshold time, trigger described constant-voltage charge module perform described holding described constant voltage threshold value not Become the charging of described battery, until the electricity of described battery reaches the step stopped during Full Charge Capacity.
11. devices according to claim 8, it is characterised in that described device also includes:
3rd adjusting module, is configured as described magnitude of voltage when being again equal to described constant voltage threshold value, utilizes the first coefficient to reduce The constant current amplitude of described first constant-current charge square wave, and utilize the second coefficient to reduce accounting for of described first constant-current charge square wave Empty ratio, obtains the 4th constant-current charge square wave, and described dutyfactor value is the institute of the first constant-current charge square wave in each cycle State the ratio of total duration that the duration of second stage accounts for the first constant-current charge square wave in described cycle；
3rd comparison module, is configured to the described 4th constant-current charge square wave that the 3rd adjusting module described in comparison obtains Constant current amplitude and constant current threshold value, and compare dutyfactor value and the duty cycle threshold of described 4th constant-current charge square wave；
5th trigger module, being configured at the comparative result of described 3rd comparison module is described 4th constant-current charge square wave Constant current amplitude more than or equal to described constant current threshold value, and the dutyfactor value of described 4th constant-current charge square wave is more than or equal to described During duty cycle threshold, using described 4th constant-current charge square wave as described first constant-current charge square wave, trigger described rectangle Ripple charging module performs the described step utilizing the first constant-current charge square wave to be the charging of described battery；
6th trigger module, being configured at the comparative result of described 3rd comparison module is described 4th constant-current charge square wave Constant current amplitude less than described constant current threshold value, and the dutyfactor value of described 4th constant-current charge square wave is less than described dutycycle threshold During value, trigger described constant-voltage charge module execution described holding described constant voltage threshold value and do not become the charging of described battery, until described The electricity of battery reaches the step stopped during Full Charge Capacity.
12. devices according to claim 11, it is characterised in that described device also includes:
7th trigger module, being configured at the comparative result of described 3rd comparison module is described 4th constant-current charge square wave Constant current amplitude more than or equal to described constant current threshold value, and the dutyfactor value of described 4th constant-current charge square wave is less than described duty During than threshold value, the constant current amplitude keeping described 4th constant-current charge square wave is constant, and by described 4th constant-current charge square wave Dutyfactor value adjust to described duty cycle threshold, obtain the 5th constant-current charge square wave, by described 5th constant-current charge rectangle Ripple, as described first constant-current charge square wave, triggers described square wave charging module and performs described to utilize the first constant-current charge square Shape ripple is the step of described battery charging；
8th trigger module, being configured at the comparative result of described 3rd comparison module is described 4th constant-current charge square wave Constant current amplitude less than described constant current threshold value, and the dutyfactor value of described 4th constant-current charge square wave is more than or equal to described duty Than threshold value time, by the constant current range-adjusting of described 4th constant-current charge square wave to described constant current threshold value, and keep the described 4th The dutyfactor value of constant-current charge square wave is constant, obtains the 6th constant-current charge square wave, by described 6th constant-current charge square wave As described first constant-current charge square wave, trigger described square wave charging module and perform described to utilize the first constant-current charge rectangle Ripple is the step of described battery charging.
13. according to Claim 8 to 12 arbitrary described devices, it is characterised in that the first different constant-current charge square waves The duration in cycle is identical.
14. according to Claim 8 to 12 arbitrary described devices, it is characterised in that described device also includes:
Second determines module, is configured to determine that whether the current magnitude of voltage of described battery is more than or equal to setting voltage value；
Constant-current charge module, is configured as described second and determines that module determines that the current magnitude of voltage of described battery is more than or equal to During described setting voltage value, utilize the constant electric current that sets to charge as described battery, trigger described first and determine that module performs institute State and determine that the current magnitude of voltage of battery is whether equal to the step of constant voltage threshold value.
15. 1 kinds of charging devices, it is characterised in that described device includes:
Processor；
For storing the memorizer of processor executable；
Wherein, described processor is configured to:
Determine that whether the current magnitude of voltage of battery is equal to constant voltage threshold value；
When described magnitude of voltage is equal to described constant voltage threshold value, utilizing the first constant-current charge square wave is the charging of described battery, each The first constant-current charge square wave in cycle is described first constant-current charge square wave by the first stage that electric current is zero and electric current The second stage of constant current amplitude is constituted, and the described first stage is before described second stage, and the magnitude of voltage of described battery is in institute Reducing in stating the first stage, the magnitude of voltage of described battery increases in described second stage；
When described magnitude of voltage is again equal to described constant voltage threshold value, described constant voltage threshold value is kept not become the charging of described battery, directly Electricity to described battery reaches to stop during Full Charge Capacity.
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CN109525003A (en) * 2017-09-19 2019-03-26 中兴通讯股份有限公司 Charging method, device, storage medium and processor
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