CN103515658B - Rechargeable battery cell and charging management method - Google Patents
Rechargeable battery cell and charging management method Download PDFInfo
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- CN103515658B CN103515658B CN201210227085.8A CN201210227085A CN103515658B CN 103515658 B CN103515658 B CN 103515658B CN 201210227085 A CN201210227085 A CN 201210227085A CN 103515658 B CN103515658 B CN 103515658B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Rechargeable battery cell and charging management method, described rechargeable battery cell includes: charged electrical core unit, and configuration stores the electricity of the first capacity when fully charged, and provides power supply when electric discharge to the load of described rechargeable battery cell；Battery management unit, is connected with described charged electrical core unit, and wherein said battery management unit obtains the DC internal resistance of described charged electrical core unit；And described battery management unit determines the first capacity of described charged electrical core unit based on the DC internal resistance being obtained.
Description
Technical field
The present invention relates to the charging management method of a kind of rechargeable battery cell and this rechargeable battery cell.
Background technology
Currently, the rechargeable battery of such as lithium ion battery etc be widely used in such as mobile terminal device,
On the equipment of electric automobile and small household appliances etc.Generally, use the mode of constant current constant voltage to charged electrical
Pond is charged, it is, rechargeable battery is charged with certain constant current when starting, and
And when rechargeable battery reaches full charge voltage with constant voltage mode charging, until charging current is less than predetermined value
Complete charging afterwards.
In this case, the electric current when charging with constant current behavior is specified based on rechargeable battery
Volumeter calculates.Here, if it is assumed that C is fully charged rechargeable battery (rated capacity) with constant
Current system electric discharge 1 hour lucky required current value that discharges completely, the then charged electrical of usual rechargeable battery
Stream could be arranged between 0.5C to 0.7C, to avoid excessive charging current to cause rechargeable battery not
Reversible infringement.
But, due to continuing on with rechargeable battery, the capacity of this rechargeable battery constantly reduces, because of
Rechargeable battery still is charged producing by this with the charging current calculating for rated capacity before
And the situation that cause rechargeable battery produce irreversible infringement excessive due to charging current.
Content of the invention
In order to solve above-mentioned technical problem of the prior art, according to an aspect of the present invention, one is provided
Rechargeable battery cell, comprising: charged electrical core unit, configuration stores the electricity of the first capacity when fully charged
Amount, and provide power supply when electric discharge to the load of described rechargeable battery cell；Battery management unit, with
Described charged electrical core unit connects, and wherein said battery management unit obtains the straight of described charged electrical core unit
Stream internal resistance；And described battery management unit determines described charging battery core list based on the DC internal resistance being obtained
First capacity of unit.
Additionally, according to one embodiment of present invention, wherein said battery management unit based on determined by
Charging current when first calculation of capacity is charged next time.
Additionally, according to one embodiment of present invention, wherein said battery management unit judges described charging
Whether the electricity of battery core unit is higher than first threshold；And if the electricity of described charged electrical core unit is higher than
First threshold, then described battery management unit obtains the DC internal resistance of described charged electrical core unit.
Additionally, according to one embodiment of present invention, wherein said battery management unit is described by measurement
The open-circuit voltage of charged electrical core unit determines whether the electricity of described charged electrical core unit is higher than first threshold.
Additionally, according to one embodiment of present invention, if wherein the electricity of described charged electrical core unit is high
In first threshold, then described battery management unit measurement described charging when described rechargeable battery cell is opened a way
The open-circuit voltage of battery core unit；The measurement of described battery management unit is born to described at described rechargeable battery cell
When offer power supply is provided, the output voltage of described charged electrical core unit and output electric current；And described battery
Administrative unit is filled with the difference of described output voltage and described output Current calculation by described open-circuit voltage
The DC internal resistance of electricity battery core unit.
Additionally, according to one embodiment of present invention, wherein said rechargeable battery cell, farther includes:
Memory cell, configuration stores the mapping representing between described DC internal resistance and described first capacity and closes
The mapping table of system, wherein when described battery management unit obtains described DC internal resistance, described battery management
Unit determines the first capacity of described charged electrical core unit based on described mapping table.
Additionally, according to a further aspect in the invention, a kind of charging management method is provided, is applied to charged electrical
Pool unit, described rechargeable battery cell stores the electricity of the first capacity and when electric discharge when being included in fully charged
Load to described rechargeable battery cell provides the charged electrical core unit of power supply, described charging management method
Including: obtain the DC internal resistance of described charged electrical core unit；And determine based on the DC internal resistance being obtained
First capacity of described charged electrical core unit.
Additionally, according to one embodiment of present invention, wherein said charging management method farther includes:
Charging current when the first calculation of capacity is charged next time determined by based on.
Additionally, according to one embodiment of present invention, wherein obtain in the direct current of described charged electrical core unit
The step of resistance farther includes: judge whether the electricity of described charged electrical core unit is higher than first threshold；With
And if the electricity of described charged electrical core unit is higher than first threshold, then obtaining described charged electrical core unit
DC internal resistance.
Additionally, according to one embodiment of present invention, wherein judge that the electricity of described charged electrical core unit is
No farther include higher than the step of first threshold: by the open-circuit voltage of the described charged electrical core unit of measurement
Determine whether the electricity of described charged electrical core unit is higher than first threshold.
Additionally, according to one embodiment of present invention, wherein obtain in the direct current of described charged electrical core unit
The step of resistance farther includes: if the electricity of described charged electrical core unit is higher than first threshold, then measure
The open-circuit voltage of described charged electrical core unit when described rechargeable battery cell is opened a way；At described rechargeable battery
Unit, when described load provides power supply, measures output voltage and the output electricity of described charged electrical core unit
Stream；And filled with the difference of described output voltage and described output Current calculation by described open-circuit voltage
The DC internal resistance of electricity battery core unit.
Additionally, according to one embodiment of present invention, wherein said charging management method, farther includes:
Storage represents the mapping table of the mapping relations between described DC internal resistance and described first capacity；And obtaining
When obtaining described DC internal resistance, determine the first capacity of described charged electrical core unit based on described mapping table.
Brief description
Fig. 1 is the schematic diagram of the structure illustrating rechargeable battery according to embodiments of the present invention；
Fig. 2 is to illustrate between capacity and the internal resistance of rechargeable battery of rechargeable battery according to embodiments of the present invention
The schematic diagram of relation.
Fig. 3 is the flow chart illustrating charging management method according to embodiments of the present invention.
Detailed description of the invention
Will be described in detail with reference to the accompanying drawings each embodiment according to the present invention.Here it is to be noted that it
In the accompanying drawings, identical reference imparting substantially had the composition of same or like 26S Proteasome Structure and Function
Part, and will omit with regard to their repeated description.
Below with reference to Fig. 1, the exemplary embodiment according to the present invention is described.Fig. 1 is that diagram is according to this
The schematic diagram of the structure of the rechargeable battery of bright embodiment.Here, rechargeable battery according to embodiments of the present invention
Unit can as power supply or accessory power supply be applied to such as mobile terminal, small household appliances or electric automobile it
On the equipment of class.
As it is shown in figure 1, rechargeable battery cell 1 according to embodiments of the present invention can include the battery core list that charges
Unit 10 and battery management unit 11.
Charged electrical core unit 10 can be real by arbitrary chargeable battery core (e.g., lithium ion, ni-mh etc.)
Existing.According to the range of application of rechargeable battery cell 1, charged electrical core unit 10 can store when fully charged
The electricity (the hereinafter simply referred to as first electricity) of predetermined volumes (determining based on purposes and material).Charging battery core
Unit 10 can electric discharge when to rechargeable battery cell 1 load (e.g., mobile terminal, small household appliances or
Electric automobile etc.) power supply (electricity) is provided.
Battery management unit 11 by arbitrary microcontroller implementation, and can realize rechargeable battery list
The power management of unit 1.Here, battery management unit 11 is connected with charged electrical core unit 10.According to this
Inventive embodiment, battery management unit 11 can obtain the DC internal resistance (electricity of charged electrical core unit 10
Resistance), and the first capacity of charged electrical core unit 10 can be determined based on the DC internal resistance being obtained.
First capacity and the charged electrical core unit 10 of charged electrical core unit 10 are described below with reference to Fig. 2
Relation between DC internal resistance.
As in figure 2 it is shown, for specific charged electrical core unit 10, with specific charged electrical core unit
The increase of the discharge and recharge number of times of 10, the first capacity when fully charged for this charged electrical core unit 10 constantly drops
Low, namely when rechargeable battery 1 continues on, its Full Charge Capacity is constantly to reduce.Additionally, with
The increase of the discharge and recharge number of times of specific charged electrical core unit 10, the DC internal resistance of charged electrical core unit 10 is not
Disconnected increase, namely when rechargeable battery 1 continues on, the DC internal resistance of its charged electrical core unit 10 is not
Disconnected increase.Thus it is known that the situation of increase of discharge and recharge number of times at specific charged electrical core unit 10
Under, in inverse relation between its DC internal resistance and its first capacity.
Here it is to be noted that it due to the purposes based on rechargeable battery 1, different types of charged electrical
Raw material, battery core capacity and the DC internal resistance that core unit 10 is used all may be different, and its first appearance
Amount and DC internal resistance may also can be different with the curve of the change of access times.Therefore in fig. 2 only
Show the inverse relation between the DC internal resistance of charged electrical core unit 10 and its first capacity, and Fig. 2
Shown proportionate relationship is not construed as limiting the invention.Here, for any charged electrical core unit 10,
The feelings of the increase at discharge and recharge number of times for various types of battery core unit 10 can be obtained by way of experiment
Concrete proportionate relationship under condition, between its DC internal resistance and its first capacity.
Below, description battery management unit 11 is obtained DC internal resistance and the base of charged electrical core unit 10
Determine the situation of the first capacity of charged electrical core unit 10 in the DC internal resistance being obtained.
Specifically, whether battery management unit 11 may determine that the electricity of charged electrical core unit 10 higher than spy
Fixed threshold value.Here, due to open-circuit voltage (non-loaded) and the charging battery core list of charged electrical core unit 10
First capacity of unit 10 is proportional, therefore can obtain charged electrical core unit 10 by experiment method
Open-circuit voltage determine the corresponding relation between the electricity of charged electrical core unit 10.In this case,
Battery management unit 11 can determine charging battery core by measuring the open-circuit voltage of charged electrical core unit 10
Whether the electricity of unit 10 is higher than first threshold.Here, first threshold can be at charged electrical core unit 10
In the range of 80%～100% of electricity when fully charged.Determine that whether the electricity of charged electrical core unit 10 is high
It the reason that in first threshold is that the DC internal resistance of charged electrical core unit 10 also can be with charged electrical core unit 10
The change of current electric quantity and change.In such a case, it is possible to obtain charged electrical core unit by experiment
10 close to the first capacity of charged electrical core unit 10 under fully charged or full power state and charged electrical core unit
Corresponding relation between the DC internal resistance of 10, and charged electrical core unit 10 is close to fully charged or full electricity
During state, the DC internal resistance of measurement charged electrical core unit 10 is to calculate the first capacity of charged electrical core unit 10,
Such that it is able to avoid calculating the appearance of error to the full extent.
Then, if battery management unit 11 determines that the electricity of charged electrical core unit 10 is higher than first threshold,
Then battery management unit 11 obtains the DC internal resistance of charged electrical core unit 10.
Specifically, if battery management unit 11 determines that the electricity of charged electrical core unit 10 is higher than the first threshold
Value, then first battery management unit 11 measures the charged electrical core unit 10 when rechargeable battery cell 1 is opened a way
Open-circuit voltage.For example, battery management unit 11 can control rechargeable battery cell 1 and load disconnection,
And measure the open-circuit voltage of charged electrical core unit 10 when rechargeable battery cell 1 is opened a way.Then, cell tube
Reason unit 11 is also measured at rechargeable battery cell 1 to load (e.g., mobile terminal, small household appliances, electronic
Automobile etc.) when power supply (connection) is provided, the output voltage of charged electrical core unit 10 and export electric current.
Here, owing to the open-circuit voltage of charged electrical core unit 10 is equal to the voltage that charged electrical core unit 10 produces,
And the output voltage of charged electrical core unit 10 is equal to charging when rechargeable battery cell 1 provides power supply to load
The voltage that battery core unit 10 produces deducts the voltage that the DC internal resistance of charged electrical core unit 10 consumes, therefore
Battery management unit 11 by the open-circuit voltage of charged electrical core unit 10 and charged electrical core unit 10 with
Output voltage during load supplying can obtain the voltage that the DC internal resistance of charged electrical core unit 10 consumes.?
In this case, owing to battery management unit 11 is also measured provides electricity at rechargeable battery cell 1 to load
The output electric current of charged electrical core unit 10 during source.Therefore, battery management unit 11 can be by open circuit electricity
The difference of pressure and output voltage and the DC internal resistance of output Current calculation charged electrical core unit 10.
Here, according to one embodiment of present invention, rechargeable battery cell 1 can also include memory cell
(not shown).Here, memory cell can be realized by arbitrary storage chip.Memory cell can store
Represent the mapping between the DC internal resistance of charged electrical core unit 10 and the first capacity of charged electrical core unit 10
The mapping table of relation.According to embodiments of the invention, mapping table can represent the electricity of charged electrical core unit 10
Measure the DC internal resistance higher than the charged electrical core unit 10 during first threshold and the first of charged electrical core unit 10
Mapping relations between capacity.In this case, charged electrical core unit is obtained at battery management unit 11
10 DC internal resistance when, battery management unit 11 can determine charged electrical core unit 10 based on this mapping table
The first capacity.
Then, after battery management unit 11 determines the first capacity of charged electrical core unit 10, battery
Administrative unit 11 based on determined by the first calculation of capacity charge next time when charging current.Here, example
As if battery management unit 11 determines that the first capacity of charged electrical core unit 10 is equivalent to battery core of charging
The 90% of the rated capacity of unit 10, then battery management unit 11 can calculate next time based on this ratio
Charging current during charging.In this case, the charging current next time charged is charged electrical core unit
The 90% of 10 charging currents under rated capacity.In this case, due to can based on charging battery core
The DC internal resistance of unit 10 determines the first capacity of charged electrical core unit 10, and can be based on being determined
Charging current when next time charging for first calculation of capacity, therefore fill the next time at rechargeable battery cell 1
During electricity, battery management unit 11 can provide the information relevant with charging current to the adapter being connected,
Rechargeable battery cell 1 can be charged by adapter with the charging current being provided.So, may be used
Upgrade in time charging current with the first capacity based on charged electrical core unit 10 so that rechargeable battery cell 1
Excessive charging current will not be received, thus can effectively extend the life-span of rechargeable battery cell 1.
It is described above when the electricity of charged electrical core unit 10 is higher than first threshold, it is thus achieved that charging battery core
The situation of the mapping relations between the DC internal resistance of unit 10 and the first capacity of charged electrical core unit 10.
It is clear that the invention is not restricted to this.For example, under any state of charge, as long as charging battery core can be set up
Mapping relations between the DC internal resistance of unit 10 and the first capacity of charged electrical core unit 10, and
Battery management unit 11 can obtain DC internal resistance the base of charged electrical core unit 10 under this state of charge
Obtain the first capacity of charged electrical core unit 10 in mapping relations, other state of charge is also allow.
Next, with reference to Fig. 3, charging management method according to embodiments of the present invention is described.Here, according to
The charging management method of the embodiment of the present invention may apply in the rechargeable battery cell shown in Fig. 1.This fills
Electricity battery unit stores the electricity of the first capacity and when electric discharge to rechargeable battery cell when being included in fully charged
Load provide power supply charged electrical core unit.
As it is shown on figure 3, in step S301, it is thus achieved that the DC internal resistance of charged electrical core unit.
For example, step S301 can include whether the electricity judging charged electrical core unit is higher than first threshold；
And if the electricity of charged electrical core unit is higher than first threshold, then obtained in the direct current of charged electrical core unit
Resistance.Specifically, whether battery management unit 11 may determine that the electricity of charged electrical core unit 10 higher than spy
Fixed threshold value.Here, due to open-circuit voltage (non-loaded) and the charging battery core list of charged electrical core unit 10
First capacity of unit 10 is proportional, therefore can obtain charged electrical core unit 10 by experiment method
Open-circuit voltage determine the corresponding relation between the electricity of charged electrical core unit 10.In this case,
Battery management unit 11 can determine charging battery core by measuring the open-circuit voltage of charged electrical core unit 10
Whether the electricity of unit 10 is higher than first threshold.
Then, if battery management unit 11 determines that the electricity of charged electrical core unit 10 is higher than first threshold,
Then battery management unit 11 obtains the DC internal resistance of charged electrical core unit 10.Specifically, if cell tube
Reason unit 11 determines that the electricity of charged electrical core unit 10 is higher than first threshold, then battery management unit 11 is first
First measure the open-circuit voltage of the charged electrical core unit 10 when rechargeable battery cell 1 is opened a way.For example, cell tube
Reason unit 11 can control rechargeable battery cell 1 and disconnect with load, and measures rechargeable battery cell 1 and open
The open-circuit voltage of charged electrical core unit 10 during road.Then, battery management unit 11 is also measured at charged electrical
Pool unit 1 provides power supply (to connect to load (e.g., mobile terminal, small household appliances, electric automobile etc.)
Logical) when, the output voltage of charged electrical core unit 10 and output electric current.Here, due to charging battery core list
Unit 10 open-circuit voltage be equal to charged electrical core unit 10 produce voltage, and rechargeable battery cell 1 to
When load provides power supply, the output voltage of charged electrical core unit 10 is equal to the electricity that charged electrical core unit 10 produces
Pressure deducts the voltage that the DC internal resistance of charged electrical core unit 10 consumes, and therefore battery management unit 11 passes through
The open-circuit voltage of charged electrical core unit 10 and charged electrical core unit 10 output electricity when with load supplying
Pressure can obtain the voltage that the DC internal resistance of charged electrical core unit 10 consumes.In this case, due to,
Battery management unit 11 also measures the charged electrical core unit when rechargeable battery cell 1 provides power supply to load
The output electric current of 10.Therefore, battery management unit 11 can be by the difference of open-circuit voltage and output voltage
Value and the DC internal resistance of output Current calculation charged electrical core unit 10.
S302, determines the first capacity of charged electrical core unit based on the DC internal resistance being obtained.
Specifically, rechargeable battery cell 1 can also include memory cell (not shown).In this case,
Can would indicate that between the DC internal resistance of charged electrical core unit 10 and the first capacity of charged electrical core unit 10
Mapping relations mapping table store in the memory unit.Here, according to embodiments of the invention, depositing
In storage unit, the mapping table of storage can represent the electricity of charged electrical core unit 10 higher than during first threshold
Mapping relations between the DC internal resistance of charged electrical core unit 10 and the first capacity of charged electrical core unit 10.
In this case, when battery management unit 11 obtains the DC internal resistance of charged electrical core unit 10, electricity
Pond administrative unit 11 can determine charged electrical core unit 10 based on storage this mapping table in the memory unit
The first capacity.
Additionally, the method shown in Fig. 3 can also include: the first calculation of capacity determined by based on is next time
Charging current during charging.
Specifically, after battery management unit 11 determines the first capacity of charged electrical core unit 10, electricity
Pond administrative unit 11 based on determined by the first calculation of capacity charge next time when charging current.Here,
For example, if battery management unit 11 determines that the first capacity of charged electrical core unit 10 is equivalent to charged electrical
The 90% of the rated capacity of core unit 10, then battery management unit 11 can calculate next based on this ratio
Charging current during secondary charging.In this case, the charging current next time charged is charging battery core list
The 90% of unit's 10 charging currents under rated capacity.In this case, due to can be based on charged electrical
The DC internal resistance of core unit 10 determines the first capacity of charged electrical core unit 10, and can based on really
Charging current when the first fixed calculation of capacity is charged next time, the therefore next time at rechargeable battery cell 1
During charging, battery management unit 11 can provide the information relevant with charging current to the adapter being connected,
Rechargeable battery cell 1 can be charged by adapter with the charging current being provided.So, may be used
Upgrade in time charging current with the first capacity based on charged electrical core unit 10 so that rechargeable battery cell 1
Excessive charging current will not be received, thus can effectively extend the life-span of rechargeable battery cell 1.
Here it is to be noted that it be described above the electricity at charged electrical core unit 10 to be higher than first
During threshold value, it is thus achieved that the DC internal resistance of charged electrical core unit 10 and the first capacity of charged electrical core unit 10
Between the situation of mapping relations.It is clear that the invention is not restricted to this.For example, under any state of charge,
As long as the DC internal resistance of charged electrical core unit 10 and the first capacity of charged electrical core unit 10 can be set up
Between mapping relations, and battery management unit 11 can obtain under this state of charge charging battery core list
The DC internal resistance of unit 10 the first capacity obtaining charged electrical core unit 10 based on mapping relations, other
State of charge is also allow.
Each embodiment of the present invention described in detail above.But, those skilled in the art should manage
Solve, without departing from the principles and spirit of the present invention, various modification can be carried out to these embodiments,
Combine or sub-portfolio, and such modification should fall within the scope of the present invention.
Claims (8)
1. a rechargeable battery cell, comprising:
Charged electrical core unit, configuration stores the electricity of the first capacity when fully charged, and when electric discharge
There is provided power supply to the load of described rechargeable battery cell；
Battery management unit, is connected with described charged electrical core unit,
Wherein said battery management unit judges whether the electricity of described charged electrical core unit is higher than first
Threshold value, the 80%～100% of the electricity when described charged electrical core unit is fully charged for the described first threshold it
Between, and described charging battery core is less than filling；And
If the electricity of described charged electrical core unit be higher than first threshold and and less than filling, then described battery
Administrative unit obtains the DC internal resistance of described charged electrical core unit；And
Described battery management unit determines the first of described charged electrical core unit based on the DC internal resistance being obtained
Capacity, wherein
Described battery management unit based on determined by the first calculation of capacity charge next time when charging current.
2. rechargeable battery cell as claimed in claim 1, wherein
Described battery management unit by the open-circuit voltage of the described charged electrical core unit of measurement determine described in fill
Whether the electricity of electricity battery core unit is higher than first threshold.
3. rechargeable battery cell as claimed in claim 1, wherein
If the electricity of described charged electrical core unit is higher than first threshold, the then measurement of described battery management unit
The open-circuit voltage of described charged electrical core unit when described rechargeable battery cell is opened a way；
Described battery management unit is measured when described rechargeable battery cell provides power supply to described load, institute
State output voltage and the output electric current of charged electrical core unit；And
Described battery management unit is by described open-circuit voltage and the difference of described output voltage and described defeated
Go out the DC internal resistance of Current calculation charged electrical core unit.
4. rechargeable battery cell as claimed in claim 1, farther includes:
Memory cell, configuration stores the mapping representing between described DC internal resistance and described first capacity and closes
The mapping table of system, wherein
When described battery management unit obtains described DC internal resistance, described battery management unit is based on described
Mapping table determines the first capacity of described charged electrical core unit.
5. a charging management method, is applied to rechargeable battery cell, and described rechargeable battery cell is included in
Store the electricity of the first capacity when fully charged and provide electricity when electric discharge to the load of described rechargeable battery cell
The charged electrical core unit in source, described charging management method includes:
Judging that whether the electricity of described charged electrical core unit is higher than first threshold, described first threshold is described
Between 80%～100% of electricity when charged electrical core unit is fully charged, and described charging battery core is less than filling,
If the electricity of described charged electrical core unit be higher than first threshold and and less than filling, then obtain described charged electrical
The DC internal resistance of core unit；
Determine the first capacity of described charged electrical core unit based on the DC internal resistance being obtained；And
Charging current when the first calculation of capacity is charged next time determined by based on.
6. charging management method as claimed in claim 5, wherein judges the electricity of described charged electrical core unit
Whether amount farther includes higher than the step of first threshold:
Determined the electricity of described charged electrical core unit by the open-circuit voltage of the described charged electrical core unit of measurement
It whether is higher than first threshold.
7. charging management method as claimed in claim 6, wherein obtains the straight of described charged electrical core unit
The step of stream internal resistance farther includes:
If the electricity of described charged electrical core unit is higher than first threshold, then measure at described rechargeable battery list
The open-circuit voltage of described charged electrical core unit during unit's open circuit；
When described rechargeable battery cell provides power supply to described load, measure described charged electrical core unit
Output voltage and output electric current；And
By difference and the described output Current calculation charged electrical of described open-circuit voltage and described output voltage
The DC internal resistance of core unit.
8. charging management method as claimed in claim 5, farther includes:
Storage represents the mapping table of the mapping relations between described DC internal resistance and described first capacity；And
When obtaining described DC internal resistance, determine the first of described charged electrical core unit based on described mapping table
Capacity.
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| CN201210227085.8A CN103515658B (en) | 2012-06-29 | 2012-06-29 | Rechargeable battery cell and charging management method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI547705B (en) * | 2014-12-05 | 2016-09-01 | 財團法人工業技術研究院 | Method and system for online estimating internal resistance of battery |
| CN106685002A (en) * | 2017-01-16 | 2017-05-17 | 郑州云海信息技术有限公司 | Lithium battery charging management method and device |
| CN113364068A (en) * | 2020-03-04 | 2021-09-07 | 南京德朔实业有限公司 | Charging management method and battery pack |
| CN111812533A (en) * | 2020-06-22 | 2020-10-23 | 深圳市瑞能时代科技有限公司 | Electric vehicle power battery detection system, method and device and upper computer |
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| CN102207541A (en) * | 2010-03-31 | 2011-10-05 | 新德科技股份有限公司 | Method for measuring direct current internal resistance, full charge capacity and remaining power of battery pack |
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| CN101123362A (en) * | 2006-08-10 | 2008-02-13 | 东华能源科技股份有限公司 | A method for charging battery |
| CN101312259A (en) * | 2007-05-23 | 2008-11-26 | 仁宝电脑工业股份有限公司 | Charging method and system for regulating charging current |
| CN101299542A (en) * | 2008-03-05 | 2008-11-05 | 南京工业职业技术学院 | Control method for quickly charging battery |
| CN102207541A (en) * | 2010-03-31 | 2011-10-05 | 新德科技股份有限公司 | Method for measuring direct current internal resistance, full charge capacity and remaining power of battery pack |
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