CN105375544B - A kind of low battery method for charging batteries and power management integrated circuit - Google Patents
A kind of low battery method for charging batteries and power management integrated circuit Download PDFInfo
- Publication number
- CN105375544B CN105375544B CN201410438186.9A CN201410438186A CN105375544B CN 105375544 B CN105375544 B CN 105375544B CN 201410438186 A CN201410438186 A CN 201410438186A CN 105375544 B CN105375544 B CN 105375544B
- Authority
- CN
- China
- Prior art keywords
- battery
- current
- voltage
- charging
- current value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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 embodiment of the invention discloses a kind of low battery method for charging batteries, which comprises charges by battery of the first current value；It obtains the voltage difference within the unit time of the battery or obtains the current charged state of the battery；Judge whether the voltage difference or charged state meet the first preset condition, if being then battery charging with the second current value, wherein, second current value is greater than the first current value, pass through the detection of voltage difference or charged state to battery, judge that voltage difference or charged state meet the first preset condition, then improve charging current, meet the consumption of inside battery power management integrated circuit and terminal system in battery low-electricity quantity charging, battery can be allowed to charge in low battery, reach constant-current charge condition as early as possible by raising charging current, shorten the charging time of low battery battery.
Description
Technical field
The present invention relates to battery charging field, in particular to a kind of low battery method for charging batteries and the integrated electricity of power management
Road.
Background technique
Existing power management integrated circuit (English abbreviation PMIC, Power Management IC), is for managing master
Power-supply device in machine system is usually used in mobile phone and various mobile terminal devices.
It is divided into three phases substantially when carrying out battery charging, is trickle charge, constant-current charge, constant-voltage charge respectively.For
Protection battery, the electric current of trickle charge is smaller, about 50mA, and constant-current charge battery is maximum charging current, generally
500mA, 1A etc..The switch condition of trickle charge to constant-current charge is that cell voltage reaches a fixed voltage value, such as
2.8V。
Since when being inserted into charger, most PMIC has the function of Auto Power On now, system boot be will lead to
The electric current of trickle charge is consumed by system, and battery is prevented cell voltage cannot to be made to reach trickle charge from obtaining charging current
With the switching condition of constant-current charge, cause system that can not start forever.Even if strategy of the optimization software system when shutting down charging,
Power consumption in system can also consume most trickle-charge current, lead to the conversion for being all unable to reach constant-current charge for a long time
Condition wastes many charging time.
Summary of the invention
The embodiment of the invention provides a kind of low battery method for charging batteries, which comprises
It charges by battery of the first current value；
It obtains the voltage difference within the unit time of the battery or obtains the current charged state of the battery；
Judge whether the voltage difference or charged state meet the first preset condition, if being then described with the second current value
Battery charging, wherein second current value is greater than the first current value.
Further, the voltage difference within the unit time for obtaining the battery specifically includes:
Acquire the first voltage value of last moment；
Acquire the second voltage value at current time；
Second voltage value and the first voltage value are obtained into voltage difference as difference.
Further, first preset condition is voltage difference no more than zero, described to judge the voltage difference or charging shape
Whether state, which meets the first preset condition, specifically includes:
Judge whether voltage difference of the battery within the unit time is not more than zero, if then determining that the voltage difference meets
First preset condition.
Further, if described is then after the battery charges with the second current value further include:
The current voltage of the battery is obtained, the current voltage is obtained by voltage detecting circuit；
Judge whether the current voltage reaches the second preset condition, if then charging with third current value.
Further, second preset condition is that the current voltage reaches conversion voltage, and the third current value is
Constant-current charge current value, it is described to judge whether the current voltage reaches the second preset condition, if then with third current value into
Row charging specifically includes:
Judge whether the current voltage reaches conversion voltage, if then charging with constant-current charge current value.
Further, before the current charged state of the acquisition battery further include:
Configuration obtains the time interval between the battery present charge state every time.
Further, first preset condition is that current charged state is not up to constant-current charge state, the judgement
Whether the voltage difference or the charged state, which meet the first preset condition, specifically includes:
Judge whether the current charged state of the battery is not up to constant-current charge state, if then the charged state is full
The first preset condition of foot.
Another object of the present invention additionally provides a kind of power management integrated circuit, comprising: power supply module obtains mould
Block, judgment module；
The power supply module, for charging by battery of the first current value；
The acquisition module, for obtaining the voltage difference within the unit time of the battery or to obtain the battery current
Charged state, and to the judgment module send.
The judgment module, for judging whether the voltage difference or charged state meet the first preset condition, if then
It is battery charging with the second current value, wherein second current value is greater than the first current value.
As a preferred solution, the acquisition module includes:
First acquisition unit, for acquiring the first voltage value of last moment and acquiring the second voltage value at current time；
First arithmetic element, for receiving the first voltage value and second voltage value of first acquisition unit acquisition, and by the
Two voltage values obtain voltage difference as difference with the first voltage value；
First judging unit, for judging voltage difference of the battery within the unit time no more than zero；
First determination unit, it is pre- for determining that the voltage difference meets first when the first judging unit judging result, which is, is
If condition；
Second acquisition unit obtains the current voltage of the battery；
Second judgment unit, for judging whether the current voltage reaches the second preset condition, so that described current
Voltage when reaching the second preset condition the power supply module charged with third current value.
As a preferred solution, the circuit includes:
First timing unit, for configuring the time interval obtained between the battery present charge state every time；
Third judging unit, for judging whether the current charged state of the battery is not up to constant-current charge state；
Second determination unit meets the first preset condition for determining when third judging unit judging result, which is, is.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
It charges by battery of the first current value, obtains the voltage difference or the acquisition electricity within the unit time of the battery
The current charged state in pond, judges whether the voltage difference or charged state meet the first preset condition, if then with the second electricity
Flow valuve is battery charging, wherein second current value is greater than the first current value.Pass through the voltage difference or charging to battery
The detection of state judges that voltage difference or charged state meet the first preset condition, then improves charging current, meet in the low electricity of battery
The consumption of inside battery power management integrated circuit and terminal system, can allow battery to be filled in low battery when amount charging
Electricity reaches constant-current charge condition by raising charging current as early as possible, shortens the charging time of low battery battery.
Detailed description of the invention
Fig. 1 is a kind of flow chart of embodiment of low battery charging method in the embodiment of the present invention；
Fig. 2 is the flow chart of low battery charging method another kind embodiment in the embodiment of the present invention；
Fig. 3 is the flow chart of low battery charging method another kind embodiment in the embodiment of the present invention；
Fig. 4 is the flow chart of low battery charging method another kind embodiment in the embodiment of the present invention；
Fig. 5 is a kind of flow chart of embodiment of battery management integrated circuit in the embodiment of the present invention；
Fig. 6 is the flow chart of battery management integrated circuit another kind embodiment in the embodiment of the present invention；
Fig. 7 is the flow chart of battery management integrated circuit another kind embodiment in the embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of low battery method for charging batteries and power management integrated circuits, exist for battery
It charges when low battery, reaches constant-current charge condition as early as possible by raising charging current, when shortening the charging of low battery battery
Between.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Description and claims of this specification and term " first ", " second ", " third " " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiments described herein can be in addition to illustrating herein
Or the sequence other than the content of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those skilled in the art's every other implementation obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
Incorporated by reference to Fig. 1, a kind of embodiment of low battery method for charging batteries in the embodiment of the present invention, which comprises
101, it charges by battery of the first current value.
It charges the incipient stage for battery, with the charging of the first current value, the size of the first current value is set according to actual needs
It is fixed, meet the requirement of safe charging, it is common, start period using trickle charge, the current value of trickle current for battery
About 50mA, to achieve the purpose that protect battery, as those skilled in the art, it should be appreciated that.
102, it obtains the voltage difference within the unit time of the battery or obtains the current charged state of the battery.
Obtain whether cell voltage generates variation or the current charged state of battery, charged state described herein are
Refer to that the inside of power management integrated circuit is used to identify a kind of status indicator of battery charging situation, there are three in usual battery
State: trickle charge state, constant-current charge state and constant-voltage charge state can be understood in time by obtaining this status indicator
To the charged state of battery.
It should be noted that the acquisition of cell voltage can be realized with overvoltage detection circuit, ordinary skill
Personnel are it is to be appreciated that hereinafter repeat no more.
103, judge whether the voltage difference or charged state meet the first preset condition, if so then execute 104, hold if not
Row 102.
It 104, is battery charging with the second current value, wherein second current value is greater than the first current value.
Judge whether voltage difference or charged state meet the first preset condition, the first preset condition can be understood as battery
Electricity do not change or declined, specifically, if charging current be only capable of maintain internal circuit consumption if,
The electricity of battery can maintain dynamic equilibrium, if charging current is not enough to holding circuit consumption, the electricity of battery can decline,
An electric current class is then promoted when judge that voltage difference or charged state reach the first preset condition when, is with the second current value
Battery charging, because the second current value is greater than the first current value, it can be understood as improve the charging class of electric current.
It should be noted that step 101,102,103 execution can be recycled, that is, completes a set of process and then sentence again
The voltage difference or charged state for powering off pond continue raising current value and fill for battery if still meeting the first preset condition
Electricity.
In the present embodiment, charges by battery of the first current value, obtain the voltage difference within the unit time of the battery
Or the current charged state of the battery is obtained, judge whether the voltage difference or charged state meet the first preset condition, if
It is then with the second current value for battery charging, wherein second current value is greater than the first current value.By to battery
The detection of voltage difference or charged state judges that voltage difference or charged state meet the first preset condition, then improves charging current, full
The consumption of foot inside battery power management integrated circuit in battery low-electricity quantity charging, can allow battery to be filled in low battery
Electricity reaches constant-current charge condition by raising charging current as early as possible, shortens the charging time of low battery battery.
Incorporated by reference to Fig. 2, judged for the voltage difference of battery is used, low battery charging method in the embodiment of the present invention
Another embodiment, which comprises
201, the first voltage value of last moment is acquired；
Difference judgement is made using the voltage at current time and the voltage of last moment in the present embodiment, for judging the electricity of battery
Whether pressure generates variation, so may be otherwise using the voltage difference between current time and subsequent time, also can solve skill
Art problem, satisfaction may determine that whether cell voltage changes, in addition, the time interval between two moment can be according to need
It is determined, specifically without limitation.
202, the second voltage value at current time is acquired；
The voltage value for obtaining battery can realize that those of ordinary skill in the art should by voltage detecting circuit
Solution.
203, second voltage value and the first voltage value are obtained into voltage difference as difference.
The difference that the first voltage value obtains is subtracted by second voltage value and judges whether cell voltage changes, if poor
Value is greater than zero, then it is assumed that the voltage in battery is increasing, if being not more than zero, then it is assumed that the charging of the first current value is only in battery
It is able to satisfy the power demand of circuit itself, there cannot be extra electricity to complete battery charging, so needing the shelves of raising charging current
It is secondary.
204, judge whether voltage difference of the battery within the unit time is not more than zero, meet first if so, determining
Preset condition simultaneously executes step 205, if it is not, then executing 201.
First preset condition is that voltage difference is not more than zero, judges voltage difference herein no more than zero, is because of the voltage
It is poor to make difference acquisition using the voltage of current time and last moment, if poor using the voltage of current time and subsequent time work,
Voltage difference should be changed into not less than zero, the voltage for being just able to satisfy battery does not have raised judgement, so can basis in application
It needs flexibly to choose.
It should be noted that if it is determined that when voltage difference is unsatisfactory for the first preset condition, then it represents that the voltage of battery has liter
Height can choose maintain the charging of the first current value at this time.
205, it charges by battery of the second current value, second current value is greater than the first current value；
An electric current class is then promoted when judge that voltage difference reaches the first preset condition when, using the second current value as battery
Charging, because the second current value is greater than the first current value, it can be understood as the charging class of electric current is improved, so that battery charges
Time shortens, and avoids the problem that inside battery circuit consumption electricity bring cannot be full of for a long time.
It should be noted that step 201 can recycle execution to 205, that is, completes a set of process and then rejudge electricity
The voltage difference or charged state in pond continue to improve current value if still meeting the first preset condition as battery charging.
In the present embodiment, charges by battery of the first current value, obtain the voltage difference within the unit time of the battery
Or the current charged state of the battery is obtained, judge whether the voltage difference or charged state meet the first preset condition, if
It is then with the second current value for battery charging, wherein second current value is greater than the first current value.By to battery electricity
The detection of pressure difference judges that voltage difference meets the first preset condition, then improves charging current, meets the electricity in battery low-electricity quantity charging
Pond internal electric source manages the consumption of integrated circuit, and battery can be allowed to charge in low battery, most by raising charging current
Reach constant-current charge condition fastly, shortens the charging time of low battery battery.
Incorporated by reference to Fig. 3, judge for using voltage difference, the another of low battery charging method is implemented in the embodiment of the present invention
Example, which comprises
301, the first voltage value of last moment is acquired；
302, the second voltage value at current time is acquired；
303, second voltage value and the first voltage value are obtained into voltage difference as difference.
304, judge whether voltage difference of the battery within the unit time is not more than zero, if then determining the voltage difference
Meet the first preset condition and execute 305, executes 301 if not.
First preset condition is voltage difference no more than zero, described to judge whether the voltage difference meets the first default item
Part.
305, it charges by battery of the second current value, second current value is greater than the first current value.
Above steps and step 201 are not repeated herein to 205 similar.
306, the current voltage of the battery is obtained；
The current voltage of battery is obtained using voltage detecting circuit, it will be appreciated that the situation of change of battery capacity.
307, judge whether the current voltage reaches the second preset condition, if so then execute 308, if it is not, executing 301.
308, it is charged with third current value.
Second preset condition is that the current voltage reaches conversion voltage, and conversion voltage refers in battery charging process,
When being converted into critical voltage required for constant-current charge as trickle charge, but reaching conversion voltage can then Constant Electric Current be carried out to battery
Current charge, third current value are constant-current charge current value, judge whether the current voltage reaches conversion voltage, if then with perseverance
Current charge current value charges.
309, voltage detecting circuit is closed.
After battery enters constant-current charge state, continuous current charging is maintained, is not needed at this time again to battery
Voltage is detected so that whether the electricity for judging battery changes, and closing voltage detecting circuit can save a part of electricity and disappear
Consumption, and then the charging time can be shortened.
In the present embodiment, the judgement to conversion voltage is increased, is allowed when battery reaches conversion voltage with more
High current value charges, and while not damaging battery, shortens the charging time of battery, in addition, meeting in the low electricity of battery
The consumption of inside battery power management integrated circuit, can allow battery to charge in low battery, pass through promotion when amount charging
Charging current reaches constant-current charge condition as early as possible, shortens the charging time of low battery battery.
Incorporated by reference to Fig. 4, for the judgement of battery charging state, low battery charging method is provided another in the embodiment of the present invention
A kind of embodiment, which comprises
401, configuration obtains the time interval between the battery present charge state every time.
Can use timing acquisition battery charged state, can also by the way of not timing, specifically without limitation, when
Between be spaced and can be provided using the RTC clock of battery management IC interior, RTC is that (Real-Time Clock) is real-time
Clock.
402, battery present charge state is obtained；
Charged state described herein refers to that inside battery is used to identify a kind of status indicator of battery charging state, usually
There are two states in battery: trickle charge state and constant-current charge state, can be timely by obtaining this status indicator
Solve the charged state of battery.
403, judge whether the current charged state of the battery is not up to constant-current charge state, if so then execute 404, if
Otherwise 406 are executed.
First preset condition is that current charged state is not up to constant-current charge state, is filled if meeting and being not up to constant current
Electricity condition, which then determines, meets the first preset condition.
It 404, is battery charging with the second current value.
405, RTC clock monitoring is closed.
It 406, is battery charging with third current value.
When charged state reaches constant-current charge state, do not need to be timed acquisition for detection charged state again,
Close RTC clock, it is possible to reduce a part of electric quantity consumption shortens the charging time.
In the present embodiment, charges by battery of the first current value, obtain the current charged state of the battery, judge to charge
Whether state meets the first preset condition, if being then battery charging with the second current value, wherein second current value
Greater than the first current value, third current value is greater than the second current value, and third current value is the larger constant-current charge electric current of current value, leads to
The detection to battery charging state is crossed, judges that charged state meets the first preset condition, then improves charging current, meet in battery
The consumption of inside battery power management integrated circuit, can allow battery to charge in low battery, pass through when low battery charges
Raising charging current reaches constant-current charge condition as early as possible, shortens the charging time of low battery battery.
The low battery charging method in the embodiment of the present invention is described above, below in the embodiment of the present invention
Power management integrated circuit is described, referring to Fig. 5, power management integrated circuit one embodiment packet in the embodiment of the present invention
It includes:
Power supply module 501 obtains module 502, judgment module 502；
The power supply module 501, for charging by battery of the first current value；
In the charging incipient stage, power supply module 501 uses the first current value for battery charging, and the realization of power supply module 501 mentions
For the function of the current value of different numerical value, some designs in the prior art can be used, are not limited this.
The acquisition module 502, for obtaining the voltage difference or the acquisition battery within the unit time of the battery
Current charged state, and sent to the judgment module 503.
The detection to voltage difference and battery charging state can be realized using voltage detecting circuit by obtaining module 502, right
It can make difference by the voltage at two moment in voltage difference to obtain, charged state is measurement charge condition in battery charging process
A kind of status indicator is obtained after module collects voltage difference or battery charging state and is sent to judgment module 503.
The judgment module 503, for judging whether the voltage difference or charged state meet the first preset condition, if
Then power supply module 501 is battery charging with the second current value, wherein second current value is greater than the first current value.
Voltage difference or charged state are compared judgment module 503 with the first preset condition based on the received, judge voltage
Whether difference or charged state meet the first preset condition, when judging result is yes, account for voltage difference or charged state satisfaction first
Preset condition, power supply module 501 charge by battery of the second current value, certainly, in period when judging result, which is, is, sentence
It is communicated between disconnected module 503 and power supply module 501, notice power supply module 501 changes charging current, art technology
How personnel are it is to be appreciated that specifically to communicate without limitation.
In the present embodiment, power supply module 501 charges by battery of the first current value, obtains module 502 and obtains battery unit
The charged state of voltage difference or acquisition battery in time is simultaneously sent to judgment module 503, and the judgement of judgment module 503 obtains module
Whether 502 collected voltage differences or charged state meet the first preset condition, if then power supply module 501 is with the second current value
For battery charging, the inside battery power management integrated circuit when battery low-electricity quantity charges is met by raising charging current and is disappeared
Consumption, can allow battery to charge in low battery, reach constant-current charge condition as early as possible by raising charging current, shorten low electricity
Measure the charging time of battery.
Incorporated by reference to Fig. 6, for the method using voltage difference, the another kind of battery management integrated circuit in the embodiment of the present invention
Embodiment includes:
Power supply module 601, for charging by battery of the first current value.
First acquisition unit 602, for acquiring the first voltage value of last moment and acquiring the second voltage at current time
Value.
First acquisition unit can realize the acquisition to charging voltage using voltage detecting circuit, it should be noted that
In the present embodiment, first acquisition unit acquire last moment and current time voltage value, naturally it is also possible to ability current time and
The voltage value of subsequent time, when practical application, can flexibly be chosen.
First arithmetic element 603, for receiving the first voltage value and second voltage value of the acquisition of first acquisition unit 602,
And second voltage value and the first voltage value are obtained into voltage difference as difference.
When acquiring subsequent time and the voltage at current time, then the voltage and the voltage at current time of subsequent time are used
Make difference and obtains voltage difference.
First judging unit 604, for judging voltage difference of the battery within the unit time no more than zero；
Mentioning the unit time in the present embodiment can be understood as time interval between last moment and current time, by this
Time interval illustrates that the voltage at current time exists compared with the voltage of last moment no more than zero as unit time, voltage difference
The case where equal or reduction, i.e., current charging current is only capable of maintaining the electricity consumption of battery management integrated circuit, without more electricity
Amount is that battery charges.
First determination unit 605 meets the first preset condition for determining when the first judging unit judging result, which is, is.
Judging result is transferred to the first determination unit 605 by the first judging unit 604, is determined when the judgment result is yes full
The first preset condition of foot.
When meeting the first preset condition, power supply module charges using the second current value as battery.
Second acquisition unit 606 obtains the current voltage of the battery.
Second acquisition unit 606 acquires the current voltage of battery in real time, and current voltage is transmitted to second judgment unit,
Second acquisition unit can equally realize the acquisition to cell voltage using voltage detecting circuit.
Second judgment unit 607, for judging whether the current voltage reaches the second preset condition.
Second judgment unit 607 presets the second preset condition, and the second preset condition is that current battery level reaches conversion
Voltage, conversion voltage hereinbefore by the agency of, therefore not to repeat here.
When the current voltage reaches the second preset condition, power supply module 601 charges using third current value as battery.
Third current value is constant-current charge electric current at this time, and third current value is greater than the second current value, when cell voltage reaches
When converting voltage, power supply module 601 can use the biggish continuous current of current value for battery charging, in this way can be further
Shorten the charging time.
It in the present embodiment,, can when cell voltage reaches conversion voltage by increasing the judgement to conversion voltage
It is charged using the third current value for using current value bigger as battery, both ensure that the safety of battery charging process, and do not damaged battery,
Also the charging time of battery can further be shortened.
Incorporated by reference to Fig. 7, for the method using battery charging state, power management integrated circuit in the embodiment of the present invention
Another embodiment includes:
Power supply module 701, for charging by battery of the first current value；
First timing unit 702, for configuring the time interval obtained between the battery present charge state every time.
In the present embodiment, judges whether to meet the first preset condition by the detection to battery charging state, can use
Timing detects, and periodically detects to battery charging state, RTC clock circuit is all come in power management integrated circuit,
It can be to obtain battery charging state to be timed by the RTC clock circuit, when required for being configured on RTC clock circuit
Between be spaced.
It obtains module 703 and obtains the charged state of battery, and the charged state is sent to third judging unit 704.?
In charging process, battery management IC interior is equipped with the status indicator for identifying present charge state, should by obtaining
Status indicator can grasp charged state locating for present battery.
Third judging unit 704, for judging whether the current charged state of the battery is not up to constant-current charge state.
Illustrate that the voltage of inside battery does not have also if third judging unit judges that charged state is not up to constant-current charge state
Have and reach conversion voltage, need to improve charging current value at this time, if having reached constant-current charge state, does not need again to filling
Electric current is promoted, it is determined that condition be set as not up to constant-current charge state.
Second determination unit 705 meets the first preset condition for determining when third judging unit judging result, which is, is.
When the result of third judging unit judgement is to be, show that the charged state of present battery is also not up to constant-current charge
State meets the first preset condition at this time.
When battery charging state meets the first preset condition, power supply module 701 charges by battery of the second current value, the
Two current values are greater than the first current value.
In the present embodiment, the charged state by obtaining battery judges the charging situation of battery, saves by obtaining battery
The process of voltage, is simply and readily realized, simplifies the monitoring of charging process, when judging that charged state is not up to constant-current charge state
When, then raising charging current meets the consumption of the inside battery power management integrated circuit in battery low-electricity quantity charging, can be with
It allows battery to charge in low battery, shortens the charging time of low battery battery.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random
Access Memory), disk or CD etc..
Those of ordinary skill in the art will appreciate that implement the method for the above embodiments be can be with
Relevant hardware is instructed to complete by program, the program can store in a kind of computer readable storage medium, on
Stating the storage medium mentioned can be read-only memory, disk or CD etc..
A kind of low battery method for charging batteries provided by the present invention and power management integrated circuit have been carried out in detail above
Thin to introduce, for those of ordinary skill in the art, thought according to an embodiment of the present invention in specific embodiment and applies model
Place that there will be changes, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (8)
1. a kind of low battery method for charging batteries, which is characterized in that the described method includes:
(1) it charges by battery of the first current value, first current value is present charging current value；
(2) it obtains the voltage difference within the unit time of the battery or obtains the current charged state of the battery；
(3) judge whether the voltage difference or charged state meet the first preset condition；
(4) if being then battery charging with the second current value, wherein second current value is current value adjusted,
Second current value is greater than the first current value；
(5) current voltage of the battery is obtained, the current voltage is obtained by voltage detecting circuit；
(6) judge whether the current voltage reaches conversion voltage；
If otherwise repeating step (1) to step (6), until the current voltage reaches conversion voltage；
If then charging with constant-current charge current value, and close the voltage detecting circuit.
2. low battery method for charging batteries according to claim 1, which is characterized in that obtain the battery in unit
Interior voltage difference specifically includes:
Acquire the first voltage value of last moment；
Acquire the second voltage value at current time；
Second voltage value and the first voltage value are obtained into voltage difference as difference.
3. low battery method for charging batteries according to claim 2, which is characterized in that first preset condition is voltage
Difference is described to judge whether the voltage difference or charged state meet the first preset condition and specifically include no more than zero:
Judge whether voltage difference of the battery within the unit time is not more than zero, if then the voltage difference satisfaction first is default
Condition.
4. low battery method for charging batteries according to claim 1, which is characterized in that described to obtain the battery current
Before charged state further include:
Configuration obtains the time interval between the battery present charge state every time.
5. low battery method for charging batteries according to claim 1, which is characterized in that first preset condition is current
Charged state be not up to constant-current charge state, it is described to judge whether the voltage difference or charged state meet the first preset condition
It specifically includes:
Judge whether the current charged state of the battery is not up to constant-current charge state, if then determining current charged state
Meet the first preset condition.
6. a kind of power management integrated circuit characterized by comprising power supply module obtains module, judgment module and execution mould
Block；
The power supply module, for charging by battery of the first current value, the first current value is present charging current value；
The acquisition module, for obtaining the voltage difference within the unit time of the battery or obtaining that the battery is current to be filled
Electricity condition, and sent to the judgment module；
The judgment module, for judging whether the voltage difference or charged state meet the first preset condition, if then powering
Module is battery charging with the second current value, wherein second current value is current value adjusted, second electricity
Flow valuve is greater than the first current value；
The acquisition module, is also used to obtain the current voltage of the battery, and the current voltage is obtained by voltage detecting circuit
?；
The judgment module, is also used to judge whether the current voltage reaches conversion voltage；
Execution module, for triggering the acquisition module and obtaining again in the case where the current voltage not up to converts voltage
It takes the voltage difference within the unit time of the battery or obtains the current charged state of the battery, and transfer to the judgement mould
Block judges the voltage difference or whether charged state meets the first preset condition, and again in the case where meeting the first preset condition
The secondary current value for improving charging, until the current voltage reaches conversion voltage；
The execution module, be also used to the current voltage reach conversion voltage in the case where, with constant-current charge current value into
Row charging, and close the voltage detecting circuit.
7. power management integrated circuit according to claim 6, which is characterized in that the circuit includes:
First acquisition unit, for acquiring the first voltage value of last moment and acquiring the second voltage value at current time；
First arithmetic element, for receiving the first voltage value and second voltage value of first acquisition unit acquisition, and it is electric by second
Pressure value obtains voltage difference as difference with the first voltage value；
First judging unit, for judging voltage difference of the battery within the unit time no more than zero；
First determination unit, for determining that the voltage difference meets the first default item when the first judging unit judging result, which is, is
Part.
8. power management integrated circuit according to claim 6, which is characterized in that the circuit includes:
First timing unit, for configuring the time interval obtained between the battery present charge state every time；
Third judging unit, for judging whether the current charged state of the battery is not up to constant-current charge state；
Second determination unit, for determining that the current charged state meets the when third judging unit judging result is to be
One preset condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410438186.9A CN105375544B (en) | 2014-08-29 | 2014-08-29 | A kind of low battery method for charging batteries and power management integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410438186.9A CN105375544B (en) | 2014-08-29 | 2014-08-29 | A kind of low battery method for charging batteries and power management integrated circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105375544A CN105375544A (en) | 2016-03-02 |
| CN105375544B true CN105375544B (en) | 2019-08-23 |
Family
ID=55377458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410438186.9A Active CN105375544B (en) | 2014-08-29 | 2014-08-29 | A kind of low battery method for charging batteries and power management integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105375544B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180074301A (en) | 2016-12-23 | 2018-07-03 | 삼성전자주식회사 | Method and apparatus for determining abnormal state of battery |
| CN106602655A (en) * | 2016-12-28 | 2017-04-26 | 深圳天珑无线科技有限公司 | Charging method and charging circuit of mobile terminal |
| CN109378870A (en) * | 2018-09-25 | 2019-02-22 | 广州极飞科技有限公司 | Charging method and device |
| CN109738819A (en) * | 2018-12-10 | 2019-05-10 | 上海艾为电子技术股份有限公司 | Battery converts voltage computing system, method, battery and battery charger |
| CN110190644A (en) * | 2019-05-27 | 2019-08-30 | 深圳市好成绩网络科技有限公司 | Control the method, apparatus and electronic equipment of battery charge |
| CN110278147B (en) * | 2019-06-20 | 2023-10-20 | 深圳市中创工业互联网有限公司 | Power saving method and device for gateway and power saving gateway |
| CN116345647B (en) * | 2023-05-31 | 2023-08-15 | 广州通则康威智能科技有限公司 | Battery charging method and system based on self-learning of internal resistance of battery |
| CN116613869B (en) * | 2023-07-21 | 2024-03-15 | 深圳市思远半导体有限公司 | Charging method of charging circuit, charging circuit and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656501U (en) * | 2009-10-22 | 2010-11-24 | 中兴通讯股份有限公司 | Charging device used for mobile terminal |
| CN101989749A (en) * | 2009-08-04 | 2011-03-23 | 联芯科技有限公司 | Charging device and charging method |
| CN103730703A (en) * | 2013-12-19 | 2014-04-16 | 惠州市亿能电子有限公司 | Charging method for low-capacity battery |
-
2014
- 2014-08-29 CN CN201410438186.9A patent/CN105375544B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989749A (en) * | 2009-08-04 | 2011-03-23 | 联芯科技有限公司 | Charging device and charging method |
| CN201656501U (en) * | 2009-10-22 | 2010-11-24 | 中兴通讯股份有限公司 | Charging device used for mobile terminal |
| CN103730703A (en) * | 2013-12-19 | 2014-04-16 | 惠州市亿能电子有限公司 | Charging method for low-capacity battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105375544A (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105375544B (en) | A kind of low battery method for charging batteries and power management integrated circuit | |
| CN107925239B (en) | Battery pack battery charge controller and method | |
| CN105978087B (en) | Low tension battery charge control method, device and the vehicle of vehicle | |
| CN106532797A (en) | Multi-function high-capacity mobile power charger | |
| CN108432083A (en) | Method, system and equipment for balancing individual electrical energy storage unit | |
| CN106505660B (en) | A kind of charge protection method, charging protector and terminal | |
| CN106537725A (en) | Charging circuit, electronic device using same, and charger | |
| CN104505551B (en) | A kind of charging circuit of charging method and wearable device | |
| CN105656118B (en) | The device for supporting electricity consumption/powering mode to automatically switch and the equipment comprising the device | |
| CN104425850A (en) | Semiconductor device, battery pack and personal data assistant | |
| CN107516919B (en) | A kind of charging method and charger | |
| CN106549437A (en) | The dynamic without constant-voltage phase for extending battery life charges | |
| CN109450013A (en) | A kind of management method and device of base station battery | |
| CN106133541B (en) | Standby power system, deterioration estimating device and deterioration presumption method | |
| CN110198068A (en) | A kind of charge control method and charging unit | |
| CN109656349A (en) | Electricity saving method, terminal and the computer readable storage medium of terminal | |
| EP3129857A1 (en) | Systems and methods for power management of a modular mobile electronic device | |
| CN104659867A (en) | Power supply device and method for modulating charging current of power supply device of portable device | |
| CN106740196B (en) | Charging method and device for DC charging equipment | |
| CN106814317B (en) | Mobile terminal and mobile terminal electric quantity display method based on charging habit | |
| CN202025832U (en) | Charging battery and charging system | |
| CN105091502A (en) | Power failure prompt device and refrigerator | |
| CN106410921A (en) | Charge monitoring method and charging monitoring device | |
| CN106873504A (en) | Plc system | |
| CN105914835A (en) | Wearable device charging method, wearable device, mobile terminal and charging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170303 Address after: 401336 Chongqing Nan'an District Tea Garden Road, No. 8, software Incubation Park, building 1 Applicant after: Keen (Chongqing) Microelectronics Technology Co., Ltd. Address before: 400065 Chongqing Nan'an District huangjuezhen pass Fort Park No. 1 Applicant before: Chongqing City Communication & Technology Co., Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |