CN106299512B

CN106299512B - charging method and device

Info

Publication number: CN106299512B
Application number: CN201610756609.0A
Authority: CN
Inventors: 杨大伟; 王彦腾; 解霏
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2019-01-18
Anticipated expiration: 2036-08-29
Also published as: CN106299512A

Abstract

The disclosure belongs to field of computer technology about a kind of charging method and device.The described method includes: when the voltage value is equal to the constant voltage threshold value, it is battery charging using the first constant-current charge rectangular wave, the first stage and electric current that the first constant-current charge rectangular wave in each period is zero by electric current are that the second stage of the constant current amplitude of the first constant-current charge rectangular wave is constituted, and the first stage is before the second stage, the voltage value of the battery reduces within the first stage, and the voltage value of the battery increases in the second stage；When the voltage value is again equal to the constant voltage threshold value, keeping the constant voltage threshold value not becomes the battery charging, until stopping when the electricity of the battery reaches Full Charge Capacity, the voltage value of battery is solved when being equal to constant voltage threshold value, the problem for directly causing the charging rate of the battery slow for battery charging using constant voltage value has achieved the effect that the charging rate for improving battery.

Description

Charging method and device

Technical field

This disclosure relates to field of computer technology, in particular to a kind of charging method and device.

Background technique

Currently, the charging stage of the battery in terminal includes at least constant voltage charging phase.Constant voltage charging phase refers in electricity When the voltage value in pond reaches constant voltage threshold value, keeping the constant voltage threshold value not becomes battery charging, until the electricity of the battery reaches Stop when Full Charge Capacity.In general, the charging duration of constant voltage charging phase accounts for the 30%~40% of total charging duration of the battery, In, total charging duration of battery refers to the electricity of battery by the charging duration of 0 sustainable growth to Full Charge Capacity.

Summary of the invention

To solve the problems in the relevant technologies, present disclose provides a kind of charging method and devices.

According to the first aspect of the embodiments of the present disclosure, a kind of charging method is provided, this method comprises:

Determine whether the current voltage value of battery is equal to constant voltage threshold value；

It is that battery charges using the first constant-current charge rectangular wave when voltage value is equal to constant voltage threshold value, the of each period The first stage and electric current that one constant-current charge rectangular wave is zero by electric current are the of the constant current amplitude of the first constant-current charge rectangular wave Two-stage is constituted, and the first stage, before second stage, the voltage value of battery is interior in the first stage to be reduced, the voltage value of battery Increase in second stage；

When voltage value is again equal to constant voltage threshold value, constant voltage threshold value is kept not become battery charging, until the electricity of battery Stopping when reaching Full Charge Capacity.

Optionally, this method further include:

When voltage value is again equal to constant voltage threshold value, the constant current width of the first constant-current charge rectangular wave is reduced using the first coefficient Value, obtains the second constant-current charge rectangular wave；

Compare the constant current amplitude and constant current threshold value of the second constant-current charge rectangular wave；

When the constant current amplitude of the second constant-current charge rectangular wave is more than or equal to constant current threshold value, by the second constant-current charge rectangular wave As the first constant-current charge rectangular wave, it is the step of battery charges that triggering, which is executed using the first constant-current charge rectangular wave,；

When the constant current amplitude of the second constant-current charge rectangular wave is less than constant current threshold value, triggering, which executes, keeps constant voltage threshold value constant It charges for battery, until the step of electricity of battery stops when reaching Full Charge Capacity.

Optionally, this method further include:

When voltage value is again equal to constant voltage threshold value, the duty ratio of the first constant-current charge rectangular wave is reduced using the second coefficient Value, obtains third constant-current charge rectangular wave, and dutyfactor value is the second stage of the first constant-current charge rectangular wave in each period Duration accounts for the ratio of total duration of the first constant-current charge rectangular wave in period；

Compare the dutyfactor value and duty cycle threshold of third constant-current charge rectangular wave；

When the dutyfactor value of third constant-current charge rectangular wave is more than or equal to duty cycle threshold, by third constant-current charge rectangle For wave as the first constant-current charge rectangular wave, it is the step of battery charges that triggering, which is executed using the first constant-current charge rectangular wave,；

When the dutyfactor value of third constant-current charge rectangular wave is less than duty cycle threshold, triggering, which executes, keeps constant voltage threshold value not Become battery charging, until the step of electricity of battery stops when reaching Full Charge Capacity.

Optionally, this method further include:

When voltage value is again equal to constant voltage threshold value, the constant current width of the first constant-current charge rectangular wave is reduced using the first coefficient Value, and using the dutyfactor value of the second coefficient the first constant-current charge rectangular wave of diminution, obtain the 4th constant-current charge rectangular wave, duty Ratio is that the duration of the second stage of the first constant-current charge rectangular wave in each period accounts for the first constant-current charge square in period The ratio of total duration of shape wave；

Compare the constant current amplitude and constant current threshold value of the 4th constant-current charge rectangular wave, and compares the 4th constant-current charge rectangular wave Dutyfactor value and duty cycle threshold；

It is more than or equal to constant current threshold value, and the 4th constant-current charge rectangular wave in the constant current amplitude of the 4th constant-current charge rectangular wave When dutyfactor value is more than or equal to duty cycle threshold, using the 4th constant-current charge rectangular wave as the first constant-current charge rectangular wave, triggering Executing using the first constant-current charge rectangular wave is the step of battery charges；

It is less than constant current threshold value, and the duty of the 4th constant-current charge rectangular wave in the constant current amplitude of the 4th constant-current charge rectangular wave When ratio is less than duty cycle threshold, triggering, which executes, keeps constant voltage threshold value not become battery charging, until the electricity of battery reaches full The step of stopping when electricity.

Optionally, this method further include:

It is more than or equal to constant current threshold value, and the 4th constant-current charge rectangular wave in the constant current amplitude of the 4th constant-current charge rectangular wave When dutyfactor value is less than duty cycle threshold, keep the constant current amplitude of the 4th constant-current charge rectangular wave constant, and the 4th constant current is filled The dutyfactor value of electric rectangular wave is adjusted to duty cycle threshold, obtains the 5th constant-current charge rectangular wave, by the 5th constant-current charge rectangle For wave as the first constant-current charge rectangular wave, it is the step of battery charges that triggering, which is executed using the first constant-current charge rectangular wave,；

It is less than constant current threshold value, and the duty of the 4th constant-current charge rectangular wave in the constant current amplitude of the 4th constant-current charge rectangular wave When ratio is more than or equal to duty cycle threshold, by the constant current range-adjusting of the 4th constant-current charge rectangular wave to constant current threshold value, and keep The dutyfactor value of 4th constant-current charge rectangular wave is constant, obtains the 6th constant-current charge rectangular wave, by the 6th constant-current charge rectangular wave As the first constant-current charge rectangular wave, it is the step of battery charges that triggering, which is executed using the first constant-current charge rectangular wave,.

Optionally, the duration in the period of the first different constant-current charge rectangular waves is identical.

Optionally, this method further include:

Determine whether the current voltage value of battery is more than or equal to setting voltage value；

It is battery charging using constant setting electric current when the current voltage value of battery is more than or equal to setting voltage value, Triggering executes the step of whether current voltage value of battery is equal to constant voltage threshold value determined.

According to the second aspect of an embodiment of the present disclosure, a kind of charging unit is provided, which includes:

First determining module, is configured to determine that whether the current voltage value of battery is equal to constant voltage threshold value；

Rectangular wave charging module is configured as utilizing when the first determining module determines that voltage value is equal to constant voltage threshold value First constant-current charge rectangular wave is battery charging, the first stage that the first constant-current charge rectangular wave in each period is zero by electric current With electric current be the first constant-current charge rectangular wave constant current amplitude second stage constitute, and the first stage before second stage, The voltage value of battery is interior in the first stage to be reduced, and the voltage value of battery increases in second stage；

Constant-voltage charge module is configured as when voltage value is again equal to constant voltage threshold value, and constant voltage threshold value is kept not become electricity Pond charging, until stopping when the electricity of battery reaches Full Charge Capacity.

Optionally, the device further include:

The first adjustment module is configured as when voltage value is again equal to constant voltage threshold value, reduces first using the first coefficient The constant current amplitude of constant-current charge rectangular wave obtains the second constant-current charge rectangular wave；

First comparison module is configured as comparing the constant current width for the second constant-current charge rectangular wave that the first adjustment module obtains Value and constant current threshold value；

First trigger module is configured as in the perseverance that the comparison result of the first comparison module is the second constant-current charge rectangular wave When flowing amplitude more than or equal to constant current threshold value, using the second constant-current charge rectangular wave as the first constant-current charge rectangular wave, rectangle is triggered It is the step of battery charges that wave charging module, which is executed using the first constant-current charge rectangular wave,；

Second trigger module is configured as in the perseverance that the comparison result of the first comparison module is the second constant-current charge rectangular wave When flowing amplitude less than constant current threshold value, triggering constant-voltage charge module, which executes, keeps constant voltage threshold value not become battery charging, up to battery Electricity the step of stopping when reaching Full Charge Capacity.

Optionally, the device further include:

Second adjustment module is configured as when voltage value is again equal to constant voltage threshold value, reduces first using the second coefficient The dutyfactor value of constant-current charge rectangular wave, obtains third constant-current charge rectangular wave, and dutyfactor value is first constant current in each period The duration of the second stage of charging rectangular wave accounts for the ratio of total duration of the first constant-current charge rectangular wave in period；

Second comparison module is configured as comparing the duty ratio for the third constant-current charge rectangular wave that second adjustment module obtains Value and duty cycle threshold；

Third trigger module is configured as in the comparison result of the second comparison module being accounting for for third constant-current charge rectangular wave When empty ratio is more than or equal to duty cycle threshold, using third constant-current charge rectangular wave as the first constant-current charge rectangular wave, square is triggered It is the step of battery charges that shape wave charging module, which is executed using the first constant-current charge rectangular wave,；

4th trigger module is configured as in the comparison result of the second comparison module being accounting for for third constant-current charge rectangular wave When empty ratio is less than duty cycle threshold, triggering constant-voltage charge module, which executes, keeps constant voltage threshold value not become battery charging, until electricity The step of electricity in pond stops when reaching Full Charge Capacity.

Optionally, the device further include:

Third adjusts module, is configured as when voltage value is again equal to constant voltage threshold value, reduces first using the first coefficient The constant current amplitude of constant-current charge rectangular wave, and using the dutyfactor value of the second coefficient the first constant-current charge rectangular wave of diminution, it obtains 4th constant-current charge rectangular wave, dutyfactor value are the duration of the second stage of the first constant-current charge rectangular wave in each period Account for the ratio of total duration of the first constant-current charge rectangular wave in period；

Third comparison module is configured to compare the constant current for the 4th constant-current charge rectangular wave that third adjustment module obtains Amplitude and constant current threshold value, and compare the dutyfactor value and duty cycle threshold of the 4th constant-current charge rectangular wave；

5th trigger module is configured as in the perseverance that the comparison result of third comparison module is the 4th constant-current charge rectangular wave Flow amplitude be more than or equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be more than or equal to duty cycle threshold when, will 4th constant-current charge rectangular wave is triggered the execution of rectangular wave charging module and is filled using the first constant current as the first constant-current charge rectangular wave Electric rectangular wave is the step of battery charges；

6th trigger module is configured as in the perseverance that the comparison result of third comparison module is the 4th constant-current charge rectangular wave Flow amplitude be less than constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be less than duty cycle threshold when, triggering constant pressure fill Electric module, which executes, keeps constant voltage threshold value not become battery charging, until the step of electricity of battery stops when reaching Full Charge Capacity.

Optionally, the device further include:

7th trigger module is configured as in the perseverance that the comparison result of third comparison module is the 4th constant-current charge rectangular wave It flows amplitude and is more than or equal to constant current threshold value, and when the dutyfactor value of the 4th constant-current charge rectangular wave is less than duty cycle threshold, keep the The constant current amplitude of four constant-current charge rectangular waves is constant, and the dutyfactor value of the 4th constant-current charge rectangular wave is adjusted to duty ratio threshold Value, obtains the 5th constant-current charge rectangular wave, using the 5th constant-current charge rectangular wave as the first constant-current charge rectangular wave, triggers rectangle It is the step of battery charges that wave charging module, which is executed using the first constant-current charge rectangular wave,；

8th trigger module is configured as in the perseverance that the comparison result of third comparison module is the 4th constant-current charge rectangular wave Flow amplitude be less than constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be more than or equal to duty cycle threshold when, by the 4th The constant current range-adjusting of constant-current charge rectangular wave keeps the dutyfactor value of the 4th constant-current charge rectangular wave not to constant current threshold value Become, obtain the 6th constant-current charge rectangular wave, using the 6th constant-current charge rectangular wave as the first constant-current charge rectangular wave, triggers rectangle It is the step of battery charges that wave charging module, which is executed using the first constant-current charge rectangular wave,.

Optionally, the device further include:

Second determining module, is configured to determine that whether the current voltage value of battery is more than or equal to setting voltage value；

Constant-current charge module is configured as determining that the current voltage value of battery is more than or equal to setting when the second determining module It is battery charging using constant setting electric current when voltage value, the first determining module of triggering executes the voltage for determining that battery is current The step of whether value is equal to constant voltage threshold value.

According to the third aspect of an embodiment of the present disclosure, a kind of charging unit is provided, which includes:

Processor；

Memory for storage processor executable instruction；

Wherein, processor is configured as:

The technical scheme provided by this disclosed embodiment can include the following benefits:

It is battery charging using the first constant-current charge rectangular wave when being equal to constant voltage threshold value by the voltage value in battery, In, the first constant-current charge rectangular wave in each period is gradually reduced the voltage value of battery first to be gradually increased again, when this first When constant-current charge rectangular wave makes the voltage value of battery be again equal to constant voltage threshold value, keeps constant voltage threshold value not become the battery and fill Electricity, since the speed ratio that charger utilizing the first constant-current charge rectangular wave is battery charging charges by battery of constant voltage value Speed it is fast, therefore, solve the voltage value of battery when being equal to constant voltage threshold value, directly filled using constant voltage value for battery The problem that conductance causes the charging rate of the battery slow has achieved the effect that the charging rate for improving battery.

In addition, the charging battery core of battery may occur when due to being charged with biggish constant current versus cell Ohmic polarization phenomenon, and as the electricity of battery increases, the speed which occurs is faster, therefore, by with The electricity of battery is gradually increased, and the constant current amplitude of the first constant-current charge rectangular wave of control is gradually reduced, and is solved as battery holds It the problem of ohmic polarization phenomenon of the increase of amount, the charging battery core of the battery seriously leads to the reduced service life of the battery, reaches To under the premise of improving the charging rate of battery, the effect of the service life of battery is not influenced.

In addition, the charging battery core of battery can when due to being charged with the longer constant current versus cell of duration Concentration polarization phenomenon or activation polarization phenomenon can occur, and as the electricity of battery increases, the concentration polarization phenomenon or electricity The speed that chemical polarization phenomenon occurs is faster, therefore, as the electricity of battery is gradually increased, controls the first constant-current charge rectangular wave Duty ratio be gradually reduced, solve the increase with battery capacity, the concentration polarization or electrochemistry of the charging battery core of the battery Polarization phenomena seriously lead to the problem of reduced service life of the battery, under the premise of improving the charging rate of battery, protect The service life of battery is demonstrate,proved.

It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited It is open.

Detailed description of the invention

The drawings herein are incorporated into the specification and constitutes a part of present disclosure specification, shows and meets the disclosure Embodiment, and together with specification for explaining the principles of this disclosure.

Fig. 1 is a kind of flow chart of charging method shown according to an exemplary embodiment.

Fig. 2 is the flow chart of the first charging method shown according to an exemplary embodiment.

Fig. 3 is the first constant-current charge rectangular wave shown according to an exemplary embodiment and the second constant-current charge rectangular wave Schematic diagram.

Fig. 4 is the current value of charging process shown according to an exemplary embodiment and the variation schematic diagram of voltage value.

Fig. 5 is the flow chart of second of charging method shown according to an exemplary embodiment.

Fig. 6 is the first constant-current charge rectangular wave shown according to an exemplary embodiment and third constant-current charge rectangular wave Schematic diagram.

Fig. 7 is the current value of charging process shown according to an exemplary embodiment and the variation schematic diagram of voltage value.

Fig. 8 is the flow chart of the third charging method shown according to an exemplary embodiment.

Fig. 9 is the first constant-current charge rectangular wave and the 4th constant-current charge rectangular wave shown according to an exemplary embodiment Schematic diagram.

Figure 10 is the current value of charging process shown according to an exemplary embodiment and the variation schematic diagram of voltage value.

Figure 11 is a kind of block diagram of charging unit shown according to an exemplary embodiment.

Figure 12 is a kind of block diagram of charging unit shown according to an exemplary embodiment.

Figure 13 is a kind of block diagram of device for charging shown according to an exemplary embodiment.

Specific embodiment

Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.

Fig. 1 is a kind of flow chart of charging method shown according to an exemplary embodiment, which is applied to fill In electric appliance, which includes at least charging circuit, as shown in Figure 1, the charging method includes the following steps.

In a step 101, determine whether the current voltage value of battery is equal to constant voltage threshold value.

It in a step 102, is battery charging using the first constant-current charge rectangular wave when voltage value is equal to constant voltage threshold value.

Wherein, the first stage and electric current that the first constant-current charge rectangular wave in each period is zero by electric current are the first constant current The second stage of constant current amplitude of rectangular wave of charging is constituted, and the first stage, before second stage, the voltage value of battery is the Reduce in one stage, the voltage value of battery increases in second stage.

In step 103, when voltage value is again equal to constant voltage threshold value, constant voltage threshold value is kept not become battery charging, directly Stopping when reaching Full Charge Capacity to the electricity of battery.

In conclusion the charging method that the disclosure provides, when being equal to constant voltage threshold value by the voltage value in battery, utilizes the One constant-current charge rectangular wave is battery charging, wherein the first constant-current charge rectangular wave in each period makes the voltage value of battery It is first gradually reduced and is gradually increased again, when the first constant-current charge rectangular wave makes the voltage value of battery be again equal to constant voltage threshold value When, keep constant voltage threshold value not become battery charging, since charger utilizing the first constant-current charge rectangular wave is battery charging The speed that speed ratio charges using constant voltage value as battery is fast, and therefore, the voltage value for solving battery is being equal to constant voltage threshold value When, the problem for directly causing the charging rate of the battery slow for battery charging using constant voltage value has reached raising electricity The effect of the charging rate in pond.

In the first implementation, charger fights electricity by adjusting the constant current amplitude of the first constant-current charge rectangular wave The ohmic polarization phenomenon of the charging battery core in pond, please refer to Fig. 2 shows the first charging method flow chart, which answers For in charger, as shown in Fig. 2, the charging method includes the following steps.

In step 201, determine whether the current voltage value of battery is more than or equal to setting voltage value.

When charger starts to charge for battery, the current voltage value of the battery can determine whether first.If the voltage value of battery is low In the lesser preset threshold of numerical value, such as: 2.1V (volt), at this point, the electricity of battery is usually lower, charger can utilize constant Pre-charge current is battery charging, so that the voltage value of battery is gradually increasing.Wherein, pre-charge current is usually smaller, such as: 100mA (milliampere), the present embodiment limit not to preset threshold and with the size of charging current.

Charger utilizing pre-charge current is after battery charges, and charger is also it needs to be determined that whether the voltage value of the battery is big Voltage value is set in being equal to.When the voltage value of battery is more than or equal to setting voltage value, charger executes step 202；In battery Voltage value be less than setting voltage value when, charger using pre-charge current continue as battery charge, until charger detects The voltage value of the battery executes step 202 when being more than or equal to setting voltage value.

Wherein, charger determine the current voltage value of battery whether be more than or equal to setting voltage value implementation can wrap Include but be not limited to: in the first implementation, charger obtains the current voltage value of battery every preset duration, and by the electricity Pressure value is compared with setting voltage value；In the second implementation, charger is arranged for monitoring the current voltage of battery The monitoring process of value, when the voltage value of battery is more than or equal to setting voltage value, the monitoring process is automatically by the voltage value of battery Event more than or equal to setting voltage value is notified to charger.

In step 202, when the current voltage value of battery is more than or equal to setting voltage value, constant setting electric current is utilized For battery charging.

When being that battery charges using constant setting electric current, the voltage value of the battery continues to rise charger.

In step 203, determine whether the current voltage value of battery is equal to constant voltage threshold value.

Wherein, constant voltage threshold value is the maximum charging voltage value of battery.Charger is being battery using constant setting electric current When charging, determine whether the current voltage value of battery is equal to constant voltage threshold value.When the current voltage value of battery is equal to constant voltage threshold value, Charger executes step 204；When the current voltage value of battery is less than constant voltage threshold value, the constant setting electric current of charger utilizing is Battery charging executes step 204 when the voltage value of the battery is equal to constant voltage threshold value.

Wherein, charger determines whether the current voltage value of battery is equal to the implementation of constant voltage threshold value and may include but not Be limited to: in the first implementation, charger obtains the current voltage value of battery every preset duration, and by the voltage value with Constant voltage threshold value is compared；In the second implementation, the monitoring for monitoring the current voltage value of battery is arranged in charger Process, when the voltage value of battery is equal to constant voltage threshold value, which is equal to constant voltage threshold value for the voltage value of battery automatically Event notifies to give charger voltage value.

It in step 204, is battery charging using the first constant-current charge rectangular wave when voltage value is equal to constant voltage threshold value.

Wherein, the first constant-current charge rectangular wave can be PWM (the Pulse Width of the generation of the microprocessor in charger Modulation, pulse width modulation) waveform.

When the voltage value of charger is equal to constant voltage threshold value, which is that the voltage value of constant voltage threshold value is electricity Pond charging, then the charging current of the battery can be gradually reduced.Since the constant voltage value of charger utilizing is filling for battery charging The electric speed electric current more constant than charger utilizing is that the charging rate of battery charging is slow, and therefore, charger utilizing numerical value is constant pressure The voltage value of threshold value is the time longer charging rate that will affect the battery of battery charging.

In the present embodiment, when the voltage value of battery is equal to constant voltage threshold value, it is constant pressure that charger does not utilize numerical value immediately The voltage value of threshold value is battery charging, but is battery charging first with the first constant-current charge rectangular wave, wherein each period The first stage and electric current that first constant-current charge rectangular wave is zero by electric current are the constant current amplitude of the first constant-current charge rectangular wave Second stage is constituted, and the first stage, before second stage, the voltage value of battery is interior in the first stage to be reduced, the voltage of battery Value increases in second stage, in this way, the constant electric current of charger utilizing stage is that the battery charges, accelerates electricity The charging rate in pond.

In step 205, when voltage value is again equal to constant voltage threshold value, the first constant-current charge square is reduced using the first coefficient The constant current amplitude of shape wave obtains the second constant-current charge rectangular wave.

Since the electricity of battery is bigger, the biggish constant charging current of charger utilizing is the electricity caused by battery charges The speed that ohmic polarization phenomenon occurs for the charging battery core in pond is faster, and therefore, as the electricity of battery is gradually increased, charger needs Prevent the charging battery core of the battery from ohmic polarization phenomenon occurs by reducing the constant current amplitude of the first constant-current charge rectangular wave.

Wherein, the first coefficient can be any number greater than 0 and less than 1, such as: 0.4, at this point, charger is utilizing First coefficient reduce the first constant-current charge rectangular wave constant current amplitude when, by the constant current amplitude of the first constant-current charge rectangular wave multiplied by First coefficient, obtains the second constant-current charge rectangular wave, and constant current amplitude refers to the maximum value of the electric current of the first constant-current charge square wave.

First coefficient can also be the positive number arbitrarily less than the constant current amplitude of the first constant-current charge rectangular wave, such as: 100mA, at this point, charger using the first coefficient reduce the first constant-current charge rectangular wave constant current amplitude when, by the first constant current The constant current amplitude of charging rectangular wave subtracts first coefficient, obtains the second constant-current charge rectangular wave.

Referring to FIG. 3, it illustrates the schematic diagram of the first constant-current charge rectangular wave and the second constant-current charge rectangular wave, first The constant current amplitude of constant-current charge rectangular wave 31 is 1000mA, which is subtracted the first coefficient 100mA, obtain perseverance by charger Flow the second constant-current charge rectangular wave 32 that amplitude is 900mA.

In step 206, compare the constant current amplitude and constant current threshold value of the second constant-current charge rectangular wave.

Constant current threshold value is the lesser current value of numerical value of user setting, such as: 100mA, when the second constant-current charge rectangular wave Constant current amplitude be more than or equal to constant current threshold value when, charger execute step 207；When the constant current amplitude of the second constant-current charge rectangular wave When less than constant current threshold value, illustrate that the electricity of battery has leveled off to Full Charge Capacity, charger executes step 208.

In step 207, when the constant current amplitude of the second constant-current charge rectangular wave is more than or equal to constant current threshold value, by the second perseverance Current charge rectangular wave executes step 204 as the first constant-current charge rectangular wave again.

At this point, first when the constant current Amplitude Ration last time voltage value of the first constant-current charge rectangular wave reaches constant voltage threshold value is permanent The constant current amplitude of current charge rectangular wave is small.

Optionally, the duration in the period of the first different constant-current charge rectangular waves is identical, wherein different first is permanent Current charge rectangular wave refers to different at least two groups the first constant-current charge rectangular wave of constant current amplitude.Such as: constant current amplitude is The duration in the period of the first constant-current charge rectangular wave of 1000mA, the first constant-current charge square for being 900mA with constant current amplitude The duration in the period of shape wave is identical.

In a step 208, when the constant current amplitude of the second constant-current charge rectangular wave is less than constant current threshold value, constant voltage threshold value is kept Battery charging is not become, until stopping when the electricity of battery reaches Full Charge Capacity.

Referring to FIG. 4, it illustrates in charger from during to start to charge to end for battery be that battery charges, electricity The charging current value in pond and the variation schematic diagram of charging voltage value, when charger starts to charge for battery, the voltage value of the battery For 1.9V, it is less than preset threshold 2.1V, the pre-charge current of charger utilizing 100mA is battery charging, at this point, the battery Voltage value is gradually increasing.When the voltage value of battery rises to setting voltage value 2.8V, the setting electricity of charger utilizing 1000mA Stream is that the battery charges, at this point, the voltage value of the battery continues to rise.When the voltage value of battery rises to constant voltage threshold value 4.4V When, it is that the battery charges using the first constant-current charge rectangular wave that constant current amplitude is 900mA, at this point, the voltage value of the battery exists First reduce in each period of first constant-current charge rectangular wave and increases afterwards.In the first constant-current charge that have passed through at least one period After rectangular wave, when the voltage value of the battery rises to 4.4V again, by the constant current amplitude of the first constant-current charge rectangular wave multiplied by First coefficient 0.9 obtains the second constant-current charge rectangular wave that constant current amplitude is 810mA, and 810mA is greater than constant current threshold value 100mA, will The second constant-current charge rectangular wave continues as battery charging, recycles above-mentioned steps as the first constant-current charge rectangular wave, until The constant current amplitude of second constant-current charge rectangular wave stops when being less than constant current threshold value, at this point, charger utilizing numerical value is constant voltage threshold value The voltage of 4.4V is battery charging, and the charging current of the battery is gradually reduced.When charging current is reduced to current threshold 100mA When, charger stops being that the battery charges.

In the second implementation, the alternative steps as step 205-208, charger can be by adjusting first The dutyfactor value of constant-current charge rectangular wave carrys out the concentration polarization phenomenon and activation polarization phenomenon of the charging battery core to electrical resistance method, In, dutyfactor value is that the duration of the second stage of the first constant-current charge rectangular wave in each period accounts for first perseverance in the period The ratio of total duration of current charge rectangular wave.The flow chart for please referring to second of charging method shown in Fig. 5, in step After 204, this method comprises:

In step 209, when voltage value is again equal to constant voltage threshold value, the first constant-current charge square is reduced using the second coefficient The dutyfactor value of shape wave obtains third constant-current charge rectangular wave.

When due to being charged with the longer constant current versus cell of duration, the charging battery core of battery may be sent out Raw concentration polarization phenomenon or activation polarization phenomenon, and as the electricity of battery increases, the concentration polarization phenomenon or electrochemistry pole It is faster to change the speed that phenomenon occurs, therefore, by being gradually increased with the electricity of battery, the first constant-current charge rectangular wave of control Duty ratio is gradually reduced, and solves the increase with battery capacity, the concentration polarization of the charging battery core of the battery or electrochemistry pole Change the problem of phenomenon seriously leads to the reduced service life of the battery, under the premise of improving the charging rate of battery, guarantees The service life of battery.

Wherein, the second coefficient is any number greater than 0 and less than 1, such as: 0.4.Charger is contracted using the second coefficient When the dutyfactor value of small first constant-current charge rectangular wave, can by the dutyfactor value of the first constant-current charge rectangular wave multiplied by this second Coefficient obtains the second constant-current charge rectangular wave, the dutyfactor value of the first constant-current charge rectangular wave can also be subtracted second system Number, obtains the second constant-current charge rectangular wave.

Optionally, the duration in each period of third constant-current charge rectangular wave and the first constant-current charge rectangular wave is every The duration in a period is equal.

Referring to FIG. 6, it illustrates the schematic diagram of the first constant-current charge rectangular wave and third constant-current charge rectangular wave, In the period 61 of one constant-current charge rectangular wave, the duration of second stage 62 is 7s, and the duration in period 61 is 10s, then The dutyfactor value of the first constant-current charge rectangular wave is 7/10=0.7；Charger is by the duty of the first constant-current charge rectangular wave After ratio is multiplied by the second coefficient 0.9, the dutyfactor value for obtaining third constant-current charge rectangular wave is 0.63, when the third constant-current charge When the duration in the period 63 of rectangular wave is 10s, the duration of the second stage 64 in the period 63 is 0.63.

In step 210, compare the dutyfactor value and duty cycle threshold of third constant-current charge rectangular wave.

When the dutyfactor value of third constant-current charge rectangular wave is more than or equal to duty cycle threshold, charger executes step 211； When the dutyfactor value of third constant-current charge rectangular wave is less than duty cycle threshold, charger executes step 212.

In step 211, when the dutyfactor value of third constant-current charge rectangular wave is more than or equal to duty cycle threshold, by third Constant-current charge rectangular wave executes step 204 as the first constant-current charge rectangular wave again.

At this point, first when the dutyfactor value of the first constant-current charge rectangular wave reaches constant voltage threshold value than last voltage value is permanent The dutyfactor value of current charge rectangular wave is small.

Optionally, the duration in the period of the first different constant-current charge rectangular waves is identical, wherein different first is permanent Current charge rectangular wave refers to different at least two groups the first constant-current charge rectangular wave of duty ratio.Such as: duty ratio is the first of 0.7 The duration in the period of constant-current charge rectangular wave, the period for the first constant-current charge rectangular wave for being 0.63 with duty ratio continue Duration is identical.

In the step 212, when the dutyfactor value of third constant-current charge rectangular wave is less than duty cycle threshold, constant pressure threshold is kept Value does not become battery charging, until stopping when the electricity of battery reaches Full Charge Capacity.

Referring to FIG. 7, it illustrates chargers from starting to charge to for battery during end is battery charging, battery Charging current value and charging voltage value variation schematic diagram, charger start for battery charging when, the voltage value of the battery is 1.9V, be less than preset threshold 2.1V, charger utilizing pre-charge current be the battery charge, at this point, the voltage value of the battery by Gradually rise.When the voltage value of battery rises to setting voltage value 2.8V, the setting electric current of charger utilizing 1000mA is the electricity Pond charging, at this point, the voltage value of the battery continues to rise.When the voltage value of battery rises to constant voltage threshold value 4.4V, using accounting for The first constant-current charge rectangular wave that empty ratio is 0.7 is battery charging, at this point, the voltage value of the battery is in the first constant-current charge First reduce in each period of rectangular wave and increases afterwards.After it have passed through the first constant-current charge rectangular wave at least one period, when When the voltage value of the battery rises to 4.4V again, by the dutyfactor value of the first constant-current charge rectangular wave multiplied by the second coefficient 0.9, The third constant-current charge rectangular wave that dutyfactor value is 0.63 is obtained, 0.63 is greater than duty cycle threshold 0.5, by the third constant-current charge Rectangular wave continues as battery charging, recycles above-mentioned steps, until the second constant-current charge square as the first constant-current charge rectangular wave The dutyfactor value of shape wave stops when being less than duty cycle threshold, at this point, charger utilizing numerical value is the voltage value of constant voltage threshold value 4.4V For battery charging, the charging current of the battery is gradually reduced.When charging current is reduced to current threshold 100mA, charger stops Only charge for the battery.

In the third implementation, as the alternative steps of step 205-208, charger can be by reducing simultaneously The constant current amplitude and dutyfactor value of first constant-current charge rectangular wave come ohmic polarization phenomenon, the concentration difference of the charging battery core to electrical resistance method Polarization phenomena and activation polarization phenomenon.The flow chart of the third charging method shown in Fig. 8 is please referred to, after step 204, This method comprises:

In step 213, when voltage value is again equal to constant voltage threshold value, the first constant-current charge square is reduced using the first coefficient The constant current amplitude of shape wave, and using the dutyfactor value of the second coefficient the first constant-current charge rectangular wave of diminution, it obtains the 4th constant current and fills Electric rectangular wave.

Wherein, the description in relation to the first coefficient is detailed in Fig. 2 the embodiment described, and the description in relation to the second coefficient is detailed in Fig. 5 The embodiment described, therefore not to repeat here.

Optionally, the duration in each period of the 4th constant-current charge rectangular wave and the first constant-current charge rectangular wave is every The duration in a period is equal.

Referring to FIG. 9, it illustrates the schematic diagram of the first constant-current charge rectangular wave and the 4th constant-current charge rectangular wave, first The constant current amplitude of constant-current charge rectangular wave is 1000mA, and in the period 91 of the first constant-current charge rectangular wave, second stage 92 Duration be 7s, the duration in period 91 is 10s, then the dutyfactor value of the first constant-current charge rectangular wave is 7/10= 0.7；The constant current amplitude of the first constant-current charge rectangular wave is subtracted 100mA by charger, and dutyfactor value is multiplied by the second coefficient 0.9 Afterwards, the constant current amplitude for obtaining the 4th constant-current charge rectangular wave is 900mA, dutyfactor value 0.63, when the 4th constant-current charge square When the duration in the period 93 of shape wave is 10s, the duration of the second stage 94 in the period 93 is 0.63.

In step 214, compare the constant current amplitude and constant current threshold value of the 4th constant-current charge rectangular wave, and compare the 4th constant current The dutyfactor value and duty cycle threshold of charging rectangular wave.

The constant current amplitude of 4th constant-current charge rectangular wave is more than or equal to constant current threshold value, and the 4th constant-current charge rectangular wave accounts for When empty ratio is more than or equal to duty cycle threshold, charger executes step 215；When the constant current amplitude of the 4th constant-current charge rectangular wave is big In be equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be less than duty cycle threshold when, charger execute step 216；When the constant current amplitude of the 4th constant-current charge rectangular wave is less than constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave When more than or equal to duty cycle threshold, charger executes step 217；When the constant current amplitude of the 4th constant-current charge rectangular wave is less than constant current Threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be less than duty cycle threshold when, charger execute step 218.

In step 215, it is more than or equal to constant current threshold value, and the 4th constant current in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of charging rectangular wave is more than or equal to duty cycle threshold, using the 4th constant-current charge rectangular wave as the first constant-current charge Rectangular wave executes step 204 again.

Optionally, the duration in the period of the first different constant-current charge rectangular waves is identical, wherein different first is permanent It is different that current charge rectangular wave refers to constant current amplitude, alternatively, duty ratio is different, alternatively, constant current amplitude and duty ratio all it is different extremely Few two group of first constant-current charge rectangular wave.

In the step 216, it is more than or equal to constant current threshold value, and the 4th constant current in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of charging rectangular wave is less than duty cycle threshold, keep the constant current amplitude of the 4th constant-current charge rectangular wave constant, and The dutyfactor value of 4th constant-current charge rectangular wave is adjusted to duty cycle threshold, the 5th constant-current charge rectangular wave is obtained, by the 5th Constant-current charge rectangular wave executes step 204 as the first constant-current charge rectangular wave again.

In step 217, it is less than constant current threshold value, and the 4th constant-current charge in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of rectangular wave is more than or equal to duty cycle threshold, by the constant current range-adjusting of the 4th constant-current charge rectangular wave to constant current Threshold value, and keep the dutyfactor value of the 4th constant-current charge rectangular wave constant, the 6th constant-current charge rectangular wave is obtained, by the 6th constant current Rectangular wave charge as the first constant-current charge rectangular wave, executes step 204 again.

In step 218, it is less than constant current threshold value, and the 4th constant-current charge in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of rectangular wave is less than duty cycle threshold, constant voltage threshold value is kept not become battery charging, until the electricity of battery reaches Stop when to Full Charge Capacity.

Referring to FIG. 10, it illustrates chargers from starting to charge to for battery during end is battery charging, electricity The charging current value in pond and the variation schematic diagram of charging voltage value, when charger starts to charge for battery, the voltage value of the battery For 1.9V, it is less than preset threshold 2.1V, charger utilizing pre-charge current is battery charging, at this point, the voltage value of the battery It is gradually increasing.When the voltage value of battery rises to setting voltage value 2.8V, the setting electric current of charger utilizing 1000mA is should Battery charging, at this point, the voltage value of the battery continues to rise.When the voltage value of battery rises to constant voltage threshold value 4.4V, utilize The first constant-current charge rectangular wave that constant current amplitude is 1000mA, dutyfactor value is 0.7 is battery charging, at this point, the battery Voltage value first reduces within each period of the first constant-current charge rectangular wave and increases afterwards.It has passed through the first of at least one period After constant-current charge rectangular wave, when the voltage value of the battery rises to 4.4V again, by the constant current of the first constant-current charge rectangular wave Amplitude subtracts 100mA, dutyfactor value multiplied by the second coefficient 0.9, obtain constant current amplitude be 900mA, that dutyfactor value is 0.63 Four constant-current charge rectangular waves, wherein 900mA is greater than constant current threshold value, and 0.63 is greater than duty cycle threshold 0.5, by the 4th constant current Rectangular wave charge as the first constant-current charge rectangular wave, continues as battery charging, recycles above-mentioned steps, until the second constant current is filled The constant current amplitude of electric rectangular wave be less than constant current threshold value, and dutyfactor value be less than duty cycle threshold when stop, at this point, charger utilizing The voltage value that numerical value is constant voltage threshold value 4.4V is battery charging, and the charging current of the battery is gradually reduced.When charging current reduces When to current threshold 100mA, charger stops being that the battery charges.

Figure 11 is a kind of block diagram of charging unit shown according to an exemplary embodiment, which is applied to charging In device, as shown in figure 11, which includes: the first determining module 1110, rectangular wave charging module 1120 and constant-voltage charge Module 1130.

First determining module 1110, is configured to determine that whether the current voltage value of battery is equal to constant voltage threshold value；

The rectangular wave charging module 1120 is configured as determining that voltage value is equal to constant pressure threshold in the first determining module 1110 It is battery charging using the first constant-current charge rectangular wave, the first constant-current charge rectangular wave in each period is zero by electric current when value First stage and electric current be that the second stage of constant current amplitude of the first constant-current charge rectangular wave is constituted, and the first stage is second Before stage, the voltage value of battery is interior in the first stage to be reduced, and the voltage value of battery increases in second stage；

The constant-voltage charge module 1130 is configured as when voltage value is again equal to constant voltage threshold value, keeps constant voltage threshold value not Become battery charging, until stopping when the electricity of battery reaches Full Charge Capacity.

In conclusion the charging unit that the disclosure provides, when being equal to constant voltage threshold value by the voltage value in battery, utilizes the One constant-current charge rectangular wave is battery charging, wherein the first constant-current charge rectangular wave in each period makes the voltage value of battery It is first gradually reduced and is gradually increased again, when the first constant-current charge rectangular wave makes the voltage value of battery be again equal to constant voltage threshold value When, keep constant voltage threshold value not become battery charging, since charger utilizing the first constant-current charge rectangular wave is battery charging The speed that speed ratio charges using constant voltage value as battery is fast, and therefore, the voltage value for solving battery is being equal to constant voltage threshold value When, the problem for directly causing the charging rate of the battery slow for battery charging using constant voltage value has reached raising electricity The effect of the charging rate in pond.

Figure 12 is a kind of block diagram of charging unit shown according to an exemplary embodiment, which is applied to charging In device, as shown in figure 12, which includes: the first determining module 1210, rectangular wave charging module 1220 and constant-voltage charge Module 1230.

First determining module 1210, is configured to determine that whether the current voltage value of battery is equal to constant voltage threshold value；

The rectangular wave charging module 1220 is configured as determining that voltage value is equal to constant pressure threshold in the first determining module 1210 It is battery charging using the first constant-current charge rectangular wave, the first constant-current charge rectangular wave in each period is zero by electric current when value First stage and electric current be that the second stage of constant current amplitude of the first constant-current charge rectangular wave is constituted, and the first stage is second Before stage, the voltage value of battery is interior in the first stage to be reduced, and the voltage value of battery increases in second stage；

The constant-voltage charge module 1230 is configured as when voltage value is again equal to constant voltage threshold value, keeps constant voltage threshold value not Become battery charging, until stopping when the electricity of battery reaches Full Charge Capacity.

Optionally, device further include: the first adjustment module 1240, the first comparison module 1250, the first trigger module 1260 and second trigger module 1270.

The first adjustment module 1240 is configured as when voltage value is again equal to constant voltage threshold value, is contracted using the first coefficient The constant current amplitude of small first constant-current charge rectangular wave obtains the second constant-current charge rectangular wave；

First comparison module 1250 is configured as comparing the second constant-current charge rectangle that the first adjustment module 1240 obtains The constant current amplitude and constant current threshold value of wave；

First trigger module 1260 is configured as in the comparison result of the first comparison module 1250 being the second constant-current charge When the constant current amplitude of rectangular wave is more than or equal to constant current threshold value, using the second constant-current charge rectangular wave as the first constant-current charge rectangle Wave, it is the step of battery charges that triggering rectangular wave charging module 1220, which is executed using the first constant-current charge rectangular wave,；

Second trigger module 1270 is configured as in the comparison result of the first comparison module 1250 being the second constant-current charge When the constant current amplitude of rectangular wave is less than constant current threshold value, triggering constant-voltage charge module 1230, which executes, keeps constant voltage threshold value not become battery Charging, until the step of electricity of battery stops when reaching Full Charge Capacity.

Optionally, device further include: second adjustment module 1280, the second comparison module 1290, third trigger module 1291, the 4th trigger module 1292.

The second adjustment module 1280 is configured as when voltage value is again equal to constant voltage threshold value, is contracted using the second coefficient The dutyfactor value of small first constant-current charge rectangular wave, obtains third constant-current charge rectangular wave, and dutyfactor value is the of each period The duration of the second stage of one constant-current charge rectangular wave accounts for total duration of the first constant-current charge rectangular wave in period Ratio；

Second comparison module 1290 is configured as comparing the third constant-current charge rectangle that second adjustment module 1280 obtains The dutyfactor value and duty cycle threshold of wave；

The third trigger module 1291 is configured as in the comparison result of the second comparison module 1290 being third constant-current charge When the dutyfactor value of rectangular wave is more than or equal to duty cycle threshold, using third constant-current charge rectangular wave as the first constant-current charge rectangle Wave, it is the step of battery charges that triggering rectangular wave charging module 1220, which is executed using the first constant-current charge rectangular wave,；

4th trigger module 1292 is configured as in the comparison result of the second comparison module 1290 being third constant-current charge When the dutyfactor value of rectangular wave is less than duty cycle threshold, triggering constant-voltage charge module 1230, which executes, keeps constant voltage threshold value not become electricity Pond charging, until the step of electricity of battery stops when reaching Full Charge Capacity.

Optionally, device further include: third adjusts module 1293, third comparison module 1294, the 5th trigger module 1295, the 6th trigger module 1296.

The third adjusts module 1293, is configured as when voltage value is again equal to constant voltage threshold value, is contracted using the first coefficient The constant current amplitude of small first constant-current charge rectangular wave, and utilize the duty ratio of the second coefficient the first constant-current charge rectangular wave of diminution Value, obtains the 4th constant-current charge rectangular wave, and dutyfactor value is the second stage of the first constant-current charge rectangular wave in each period Duration accounts for the ratio of total duration of the first constant-current charge rectangular wave in period；

The third comparison module 1294 is configured to compare the 4th constant-current charge square that third adjustment module 1293 obtains The constant current amplitude and constant current threshold value of shape wave, and compare the dutyfactor value and duty cycle threshold of the 4th constant-current charge rectangular wave；

5th trigger module 1295 is configured as in the comparison result of third comparison module 1293 being the 4th constant-current charge The constant current amplitude of rectangular wave is more than or equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave is more than or equal to duty ratio When threshold value, using the 4th constant-current charge rectangular wave as the first constant-current charge rectangular wave, triggers rectangular wave charging module 1220 and execute It is the step of battery charges using the first constant-current charge rectangular wave；

6th trigger module 1296 is configured as in the comparison result of third comparison module 1293 being the 4th constant-current charge The constant current amplitude of rectangular wave be less than constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be less than duty cycle threshold when, Triggering constant-voltage charge module 1230, which executes, keeps constant voltage threshold value not become battery charging, until when the electricity of battery reaches Full Charge Capacity The step of stopping.

Optionally, device further include: the 7th trigger module 1297, the 8th trigger module 1298.

7th trigger module 1297 is configured as in the comparison result of third comparison module 1293 being the 4th constant-current charge The constant current amplitude of rectangular wave is more than or equal to constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave is less than duty cycle threshold When, keep the constant current amplitude of the 4th constant-current charge rectangular wave constant, and the dutyfactor value of the 4th constant-current charge rectangular wave is adjusted To duty cycle threshold, the 5th constant-current charge rectangular wave is obtained, using the 5th constant-current charge rectangular wave as the first constant-current charge rectangle Wave, it is the step of battery charges that triggering rectangular wave charging module 1220, which is executed using the first constant-current charge rectangular wave,；

8th trigger module 1298 is configured as in the comparison result of third comparison module 1293 being the 4th constant-current charge The constant current amplitude of rectangular wave is less than constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave is more than or equal to duty cycle threshold When, by the constant current range-adjusting of the 4th constant-current charge rectangular wave to constant current threshold value, and keep accounting for for the 4th constant-current charge rectangular wave Empty ratio is constant, obtains the 6th constant-current charge rectangular wave, using the 6th constant-current charge rectangular wave as the first constant-current charge rectangular wave, Triggering rectangular wave charging module 1220 and executing using the first constant-current charge rectangular wave is the step of battery charges.

Optionally, device further include: the second determining module 1299, constant-current charge module 12991.

Second determining module 1299, is configured to determine that whether the current voltage value of battery is more than or equal to setting voltage Value；

The constant-current charge module 12991 is configured as determining the current voltage value of battery when the second determining module 1299 It is battery charging using constant setting electric current when more than or equal to setting voltage value, the first determining module 1210 of triggering executes really The step of whether current voltage value of battery is equal to constant voltage threshold value determined.

In addition, the charging battery core of battery can when due to being charged with the longer constant current versus cell of duration Concentration polarization phenomenon or activation polarization phenomenon can occur, and as the electricity of battery increases, which occurs Speed it is faster, therefore, by being gradually increased with the electricity of battery, control the duty ratio of the first constant-current charge rectangular wave gradually Reduce, solves the increase with battery capacity, the concentration polarization of the charging battery core of the battery or activation polarization phenomenon are serious The problem of leading to the reduced service life of the battery, ensure that making for battery under the premise of improving the charging rate of battery Use the service life.

About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method Embodiment in be described in detail, no detailed explanation will be given here.

An exemplary embodiment of the present disclosure provides a kind of charging units, can be realized the charging method of disclosure offer, The charging unit includes: processor, for the memory of storage processor executable instruction；

Wherein, processor is configured as:

Figure 13 is a kind of block diagram of device 1300 for charging shown according to an exemplary embodiment.For example, device 1300 can be charger or mobile charger.

Referring to Fig.1 3, device 1300 may include following one or more components: processing component 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.

The integrated operation of the usual control device 1300 of processing component 1302 such as controls the switch of regulated power supply 1304, permanent Flow control circuit 1306, limited-voltage control circuit 1308, in limited time on and off of control circuit 1310 etc., in the processing component extremely It less include microcontroller 1312, the microcontroller 1312 is for generating PWN wave.

Regulated power supply 1304 is used to provide stable operating voltage value and sufficient charging current.

Constant-current control circuit 1306 is for providing constant charging current.

Limited-voltage control circuit 1308 is for the charging voltage value of battery to be limited within constant voltage threshold value.

Control circuit 1310 is used to control the charging duration of the constant-current charge of battery in limited time.

Those skilled in the art will readily occur to other realities of the disclosure after considering specification and practicing disclosure herein Apply scheme.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or suitable The variation of answering property follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure or used Use technological means.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following right It is required that pointing out.

It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.

Claims

1. a kind of charging method, which is characterized in that the described method includes:

It is battery charging using the first constant-current charge rectangular wave, each when the voltage value is equal to the constant voltage threshold value The first stage and electric current that the first constant-current charge rectangular wave in period is zero by electric current are the first constant-current charge rectangular wave The second stage of constant current amplitude is constituted, and the first stage, before the second stage, the voltage value of the battery is in institute It states in the first stage and reduces, the voltage value of the battery increases in the second stage；

When the voltage value is again equal to the constant voltage threshold value, keeping the constant voltage threshold value not becomes the battery charging, directly The stopping when electricity of the extremely battery reaches Full Charge Capacity.

2. the method according to claim 1, wherein the method also includes:

When the voltage value is again equal to the constant voltage threshold value, the first constant-current charge rectangular wave is reduced using the first coefficient Constant current amplitude, obtain the second constant-current charge rectangular wave；

When the constant current amplitude of the second constant-current charge rectangular wave is more than or equal to the constant current threshold value, second constant current is filled For electric rectangular wave as the first constant-current charge rectangular wave, triggering execution is described to utilize the first constant-current charge rectangular wave for the electricity The step of pond is charged；

When the constant current amplitude of the second constant-current charge rectangular wave is less than the constant current threshold value, triggering is executed described in the holding Constant voltage threshold value does not become the battery charging, until the step of electricity of the battery stops when reaching Full Charge Capacity.

3. the method according to claim 1, wherein the method also includes:

When the voltage value is again equal to the constant voltage threshold value, the first constant-current charge rectangular wave is reduced using the second coefficient Dutyfactor value, obtain third constant-current charge rectangular wave, the dutyfactor value is the first constant-current charge rectangular wave in each period The second stage duration account for the period the first constant-current charge rectangular wave total duration ratio；

Compare the dutyfactor value and duty cycle threshold of the third constant-current charge rectangular wave；

When the dutyfactor value of the third constant-current charge rectangular wave is more than or equal to the duty cycle threshold, by the third constant current Rectangular wave charge as the first constant-current charge rectangular wave, it is described that triggering, which executes the first constant-current charge rectangular wave of the utilization, The step of battery charges；

When the dutyfactor value of the third constant-current charge rectangular wave is less than the duty cycle threshold, triggering executes the holding institute Stating constant voltage threshold value not becomes the battery charging, until the step of electricity of the battery stops when reaching Full Charge Capacity.

4. the method according to claim 1, wherein the method also includes:

When the voltage value is again equal to the constant voltage threshold value, the first constant-current charge rectangular wave is reduced using the first coefficient Constant current amplitude, and reduce using the second coefficient the dutyfactor value of the first constant-current charge rectangular wave, obtain the 4th constant current and fill Electric rectangular wave, the dutyfactor value are that the duration of the second stage of the first constant-current charge rectangular wave in each period accounts for The ratio of total duration of the first constant-current charge rectangular wave in the period；

Compare the constant current amplitude and constant current threshold value of the 4th constant-current charge rectangular wave, and the 4th constant-current charge rectangle The dutyfactor value and duty cycle threshold of wave；

It is more than or equal to the constant current threshold value, and the 4th constant-current charge in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of rectangular wave is more than or equal to the duty cycle threshold, using the 4th constant-current charge rectangular wave as described first Constant-current charge rectangular wave, triggering execute described the step of charging using the first constant-current charge rectangular wave for the battery；

It is less than the constant current threshold value, and the 4th constant-current charge rectangle in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of wave is less than the duty cycle threshold, the triggering execution holding constant voltage threshold value does not become the battery and fills Electricity, until the step of electricity of the battery stops when reaching Full Charge Capacity.

5. according to the method described in claim 4, it is characterized in that, the method also includes:

It is more than or equal to the constant current threshold value, and the 4th constant-current charge in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of rectangular wave is less than the duty cycle threshold, the constant current amplitude of the 4th constant-current charge rectangular wave is kept not Become, and the dutyfactor value of the 4th constant-current charge rectangular wave is adjusted to the duty cycle threshold, obtains the 5th constant-current charge Rectangular wave, using the 5th constant-current charge rectangular wave as the first constant-current charge rectangular wave, triggering, which executes, described utilizes the One constant-current charge rectangular wave is the step of battery charges；

It is less than the constant current threshold value, and the 4th constant-current charge rectangle in the constant current amplitude of the 4th constant-current charge rectangular wave When the dutyfactor value of wave is more than or equal to the duty cycle threshold, extremely by the constant current range-adjusting of the 4th constant-current charge rectangular wave The constant current threshold value, and keep the dutyfactor value of the 4th constant-current charge rectangular wave constant, obtain the 6th constant-current charge rectangle Wave, using the 6th constant-current charge rectangular wave as the first constant-current charge rectangular wave, triggering executes described permanent using first Current charge rectangular wave is the step of battery charges.

6. method according to any one of claims 1 to 5, which is characterized in that the week of the first different constant-current charge rectangular waves The duration of phase is identical.

7. method according to any one of claims 1 to 5, which is characterized in that the method also includes:

Determine whether the current voltage value of the battery is more than or equal to setting voltage value；

It is the electricity using constant setting electric current when the current voltage value of the battery is more than or equal to the setting voltage value Pond charging, triggering execute the step of whether current voltage value of the determining battery is equal to constant voltage threshold value.

8. a kind of charging unit, which is characterized in that described device includes:

Rectangular wave charging module is configured as determining that the voltage value is equal to the constant voltage threshold value in first determining module When, it is battery charging using the first constant-current charge rectangular wave, the first constant-current charge rectangular wave in each period is by electric current Zero first stage and electric current are constituted for the second stage of the constant current amplitude of the first constant-current charge rectangular wave, and described first Stage, the voltage value of the battery reduced within the first stage, the voltage value of the battery before the second stage Increase in the second stage；

Constant-voltage charge module is configured as keeping the constant voltage threshold value when the voltage value is again equal to the constant voltage threshold value The battery charging is not become, until stopping when the electricity of the battery reaches Full Charge Capacity.

9. device according to claim 8, which is characterized in that described device further include:

The first adjustment module is configured as when the voltage value is again equal to the constant voltage threshold value, is reduced using the first coefficient The constant current amplitude of the first constant-current charge rectangular wave obtains the second constant-current charge rectangular wave；

First comparison module is configured as the perseverance for the second constant-current charge rectangular wave that the first adjustment module described in comparison obtains Flow amplitude and constant current threshold value；

First trigger module is configured as in the comparison result of first comparison module being the second constant-current charge rectangular wave Constant current amplitude be more than or equal to the constant current threshold value when, using the second constant-current charge rectangular wave as first constant-current charge Rectangular wave triggers the rectangular wave charging module and executes the step using the first constant-current charge rectangular wave for battery charging Suddenly；

Second trigger module is configured as in the comparison result of first comparison module being the second constant-current charge rectangular wave Constant current amplitude when being less than the constant current threshold value, trigger the constant-voltage charge module and execute described keeping the constant voltage threshold value constant It charges for the battery, until the step of electricity of the battery stops when reaching Full Charge Capacity.

10. device according to claim 8, which is characterized in that described device further include:

Second adjustment module is configured as when the voltage value is again equal to the constant voltage threshold value, is reduced using the second coefficient The dutyfactor value of the first constant-current charge rectangular wave, obtains third constant-current charge rectangular wave, and the dutyfactor value is each week The duration of the second stage of the first constant-current charge rectangular wave of phase accounts for the first constant-current charge rectangular wave in the period Total duration ratio；

Second comparison module is configured as accounting for for the third constant-current charge rectangular wave that second adjustment module described in comparison obtains Empty ratio and duty cycle threshold；

Third trigger module is configured as in the comparison result of second comparison module being the third constant-current charge rectangular wave Dutyfactor value be more than or equal to the duty cycle threshold when, filled the third constant-current charge rectangular wave as first constant current Electric rectangular wave, triggering the rectangular wave charging module and executing the first constant-current charge rectangular wave of the utilization is battery charging Step；

4th trigger module is configured as in the comparison result of second comparison module being the third constant-current charge rectangular wave Dutyfactor value when being less than the duty cycle threshold, trigger the constant-voltage charge module and execute described keeping the constant voltage threshold value not Become the battery charging, until the step of electricity of the battery stops when reaching Full Charge Capacity.

11. device according to claim 8, which is characterized in that described device further include:

Third adjusts module, is configured as when the voltage value is again equal to the constant voltage threshold value, is reduced using the first coefficient The constant current amplitude of the first constant-current charge rectangular wave, and accounting for for the first constant-current charge rectangular wave is reduced using the second coefficient Empty ratio, obtains the 4th constant-current charge rectangular wave, the dutyfactor value for the first constant-current charge rectangular wave in each period institute State second stage duration account for the period the first constant-current charge rectangular wave total duration ratio；

Third comparison module is configured to the 4th constant-current charge rectangular wave that the adjustment of third described in comparison module obtains Constant current amplitude and constant current threshold value, and the dutyfactor value and duty cycle threshold of the 4th constant-current charge rectangular wave；

5th trigger module is configured as in the comparison result of the third comparison module being the 4th constant-current charge rectangular wave Constant current amplitude be more than or equal to the constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be more than or equal to it is described When duty cycle threshold, using the 4th constant-current charge rectangular wave as the first constant-current charge rectangular wave, the rectangle is triggered Wave charging module executes described the step of charging using the first constant-current charge rectangular wave for the battery；

6th trigger module is configured as in the comparison result of the third comparison module being the 4th constant-current charge rectangular wave Constant current amplitude be less than the constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be less than the duty ratio threshold When value, triggering the constant-voltage charge module execution holding constant voltage threshold value does not become the battery charging, until described The step of electricity of battery stops when reaching Full Charge Capacity.

12. device according to claim 11, which is characterized in that described device further include:

7th trigger module is configured as in the comparison result of the third comparison module being the 4th constant-current charge rectangular wave Constant current amplitude be more than or equal to the constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be less than the duty When than threshold value, keep the constant current amplitude of the 4th constant-current charge rectangular wave constant, and by the 4th constant-current charge rectangular wave Dutyfactor value adjust to the duty cycle threshold, the 5th constant-current charge rectangular wave is obtained, by the 5th constant-current charge rectangle Wave triggers the rectangular wave charging module and executes the first constant-current charge square of the utilization as the first constant-current charge rectangular wave Shape wave is the step of battery charges；

8th trigger module is configured as in the comparison result of the third comparison module being the 4th constant-current charge rectangular wave Constant current amplitude be less than the constant current threshold value, and the dutyfactor value of the 4th constant-current charge rectangular wave be more than or equal to the duty When than threshold value, by the constant current range-adjusting of the 4th constant-current charge rectangular wave to the constant current threshold value, and the described 4th is kept The dutyfactor value of constant-current charge rectangular wave is constant, obtains the 6th constant-current charge rectangular wave, by the 6th constant-current charge rectangular wave As the first constant-current charge rectangular wave, triggers the rectangular wave charging module and execute the first constant-current charge rectangle of the utilization Wave is the step of battery charges.

13. according to any device of claim 8 to 12, which is characterized in that the first different constant-current charge rectangular waves The duration in period is identical.

14. according to any device of claim 8 to 12, which is characterized in that described device further include:

Second determining module, is configured to determine that whether the current voltage value of the battery is more than or equal to setting voltage value；

Constant-current charge module is configured as determining that the current voltage value of the battery is more than or equal to when second determining module When the setting voltage value, it is battery charging using constant setting electric current, triggers first determining module and execute institute The step of whether current voltage value of determining battery is equal to constant voltage threshold value stated.

15. a kind of charging unit, which is characterized in that described device includes:

Processor；

Memory for storage processor executable instruction；

Wherein, the processor is configured to: