CN108649631A - A kind of safe charging management method and system - Google Patents
A kind of safe charging management method and system Download PDFInfo
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- CN108649631A CN108649631A CN201810423727.9A CN201810423727A CN108649631A CN 108649631 A CN108649631 A CN 108649631A CN 201810423727 A CN201810423727 A CN 201810423727A CN 108649631 A CN108649631 A CN 108649631A
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- 238000007600 charging Methods 0.000 title claims abstract description 73
- 238000007726 management method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 claims description 4
- 238000006731 degradation reaction Methods 0.000 claims description 4
- 230000002431 foraging effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- DWDGSKGGUZPXMQ-UHFFFAOYSA-N OPPO Chemical compound OPPO DWDGSKGGUZPXMQ-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010280 constant potential charging Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H02J7/0077—
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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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- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- 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
The invention discloses a kind of safe charging management methods, including following concrete operation step：S1：Detection before charging；S2:Charge mode selects；S3:Precharge mode；S4:Constant current mode；S5:Constant voltage mode.The present invention by detecting update battery status in real time, to which dynamic adjusts the constant pressure value in CC mode currents value and CV patterns in charging process in real time, rather than according to the control mode of current one fixed value of setting, to reach safer using effect；Step in constant pressure value and CV patterns is properly increased according to the internal resistance difference of battery and adjusts constant pressure value, with control mode of successively decreasing, shortens CV mode times to achieve the effect that the entire charging time is shortened in more efficient charging.
Description
Technical field
The invention belongs to charging technique fields, and in particular to a kind of safe charging management method.Meanwhile the present invention also public affairs
A kind of safe charging management system is opened
Background technology
Since lithium battery is because of its outstanding energy density, it is widely used on various portable equipments.Especially intelligent hand
The function of the consumer-elcetronics devices such as machine, intelligence wearing is continuously increased, performance requirement is continuously improved and current lithium battery capacity
It is difficult to use body using the method promotion that fast charge technology shortens the charging time and improves charge efficiency in the case of having big promotion
Test, but lithium battery itself is there are security risk, for example, high/low temperature, cross put, overcharge, overcurrent, storage environment etc. can all cause electricity
The accidents such as the bulging in pond, explosion, on fire, this patent based on the one kind realized on the basis of current fast charge high current scheme further
Improve the scheme of charging rate and service life and safety.
The final mode of fast charge technology either high pass or OPPO etc. at present on the market is all by improving battery-end
Charging current, be divided into preliminary filling, constant current, constant pressure three phases, constant current turns presence of the transition point due to the internal resistance of cell of constant pressure, leads
Cause virtual pressure very big, actual cell voltage is also far short of what is expected from full piezoelectric voltage, and constant-voltage phase is caused to need to expend for a long time；In addition with making
Time is elongated, and circulating battery number reaches certain number, and the battery capacity that the internal resistance of cell becomes larger reduces, works as if still used
Initial capacity 1C electric currents charging and constant-voltage go control charge if will result in service life drastically declines and short circuit
The safety problems such as fire.This patent provides a kind of method dynamic adjustment constant pressure that can detect cell voltage and battery capacity in real time and fills
The mode of piezoelectric voltage and constant-current charge charging current achievees the purpose that efficient and safe.
Invention content
The purpose of the present invention is to provide a kind of safe charging management methods and system, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides the following technical solutions：A kind of safe charging management method, including it is as follows
Concrete operation step：
S1：Detection before charging, whether test adaptor and the state of battery are normal when charger is inserted into, under normally then entering
One step does not enter charging if detecting that adapter and battery are undesirable；
S2:Charge mode selects, and to enter following three according to two condition criterions of battery temperature, cell voltage detected
Stage in which of a stage：1.5V~3.0V Pre-C (precharge) pattern, 3.0V~4.4V CC (constant current) pattern, 4.4V
CV (constant pressure) pattern；
S3:Charging current is arranged according to custom requirements in precharge mode, precharge mode, if detection reaches in real time for charging
Constant-current charge condition enters CC patterns；
S4:The charging current of constant current mode, CC patterns is not more than nQe according to the battery total capacity setting Icc currently tested,
If charging detection in real time reaches constant-voltage charge condition and enters CV patterns；
S5:Constant voltage mode, constant pressure adjust percentage D, if original constant-voltage value is V0, specific algorithm is as follows：It surveys first
Try the charge and discharge mode of battery, the cycle-index and capacity dynamic adjustment constant pressure that the charging voltages of CV patterns record according to battery are electric
Pressure value Vd and dynamic parameter include temperature T, internal resistance r, voltage V, capacity Q, percentage D one-to-one correspondence, then form mobile phone branch
The definition format held is imported into mobile phone, is obtained in mobile phone operational process by reading temperature, voltage value and other software parameter
To initial capacity percentage D0, the follow-up electricity then calculated by voltameter obtains the corresponding percentage D of real time electrical quantity；By
Cell degradation causes capacity to be decayed during use, to read the corresponding battery of current capacity from battery parameter table
Voltage value is set as the control battery constant pressure value of current CV patterns.
Preferably, nQe is in step S4：N, which is specifications, can support that maximum discharge-rate, Qe are the battery detected in real time
Total capacity, battery capacity has certain decaying compared with when initial capacity after a period of use for aging, if still with raw capacity Q0
N multiplying powers go charging if, then current rate of charge is exactly u=n*Q0/Qe, u at this time>N is more than battery can prop up
The maximum charging current multiplying power n held is so serious unfavorable to battery life and safety.
Preferably, the control battery constant pressure value (Vc) of current CV patterns can also be set by universal experience value in step S5
It sets：
<150cycle, Vc=V0=4.4V；
150~300cycle, Vc=4.35V；
300~500cycle, Vc=4.30V；
>The battery of 500cycle, Vc=4.25V, other voltage battery cores can be according to this rules.
Meanwhile the invention also discloses a kind of safe charging management systems, including：
Detection module is detected for the state to adapter and battery, and the result detected is fed back to charging
Execution module；
Charge execution module, is analyzed for the testing result to detection module, and according to the state of battery, to adaptation
Device assigns charge mode instruction：
If detecting, adapter and battery are undesirable, do not enter charging；
If detecting, adapter and battery are good, and
When cell voltage is in 1.5V~3.0V, into precharge mode；
When cell voltage is in 3.0V~4.4V, into constant current mode；
When cell voltage is in 4.4V, into constant voltage mode pattern.
The technique effect and advantage of the present invention：
1, by detecting update battery status in real time, to which dynamic adjusts CC mode currents value and CV in charging process in real time
Constant pressure value in pattern, rather than according to the control mode of current one fixed value of setting, to reach safer use
Effect；
2, step in constant pressure value and CV patterns is properly increased according to the internal resistance difference of battery and adjusts constant pressure value, with control of successively decreasing
Mode shortens CV mode times to achieve the effect that the entire charging time is shortened in more efficient charging.
Description of the drawings
Fig. 1 is a kind of flow diagram of safe charging management method of the present invention；
Fig. 2 is a kind of structural schematic diagram of safe charging management system of the present invention；
Fig. 3 is the test result comparison diagram of the present invention program and existing scheme.
Specific implementation mode
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 describes, 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, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of safe charging management method, including following concrete operation step：
S1：Detection before charging, whether test adaptor and the state of battery are normal when charger is inserted into, under normally then entering
One step does not enter charging if detecting that adapter and battery are undesirable；
S2:Charge mode selects, and to enter following three according to two condition criterions of battery temperature, cell voltage detected
Stage in which of a stage：1.5V~3.0V Pre-C (precharge) pattern, 3.0V~4.4V CC (constant current) pattern, 4.4V
CV (constant pressure) pattern；
S3:Charging current is arranged according to custom requirements in precharge mode, precharge mode, if detection reaches in real time for charging
Constant-current charge condition enters CC patterns；
S4:The charging current of constant current mode, CC patterns is not more than nQe according to the battery total capacity setting Icc currently tested,
N, which is specifications, can support maximum discharge-rate, and Qe is the battery total capacity detected in real time, aging battery after a period of use
Capacity is relatively when initial capacity has certain decaying, and if still going charging with the n multiplying powers of raw capacity Q0, current fills
Electric multiplying power is exactly u=n*Q0/Qe, at this time u>N is more than the maximum charging current multiplying power n that battery can be supported, in this way to electricity
Pond service life and safety are all serious unfavorable, if charging detection in real time reaches constant-voltage charge condition and enters CV patterns；
S5:Constant voltage mode, constant pressure adjust percentage D, if original constant-voltage value is V0, specific algorithm is as follows：It surveys first
Try the charge and discharge mode of battery, the cycle-index and capacity dynamic adjustment constant pressure that the charging voltages of CV patterns record according to battery are electric
Pressure value Vd and dynamic parameter include temperature T, internal resistance r, voltage V, capacity Q, percentage D one-to-one correspondence, then form mobile phone branch
The definition format held is imported into mobile phone, is obtained in mobile phone operational process by reading temperature, voltage value and other software parameter
To initial capacity percentage D0, the follow-up electricity then calculated by voltameter obtains the corresponding percentage D of real time electrical quantity；By
Cell degradation causes capacity to be decayed during use, to read the corresponding battery of current capacity from battery parameter table
Voltage value is set as the control battery constant pressure value of current CV patterns, can also be arranged by universal experience value：
<150cycle, Vc=V0=4.4V；
150~300cycle, Vc=4.35V；
300~500cycle, Vc=4.30V；
>The battery of 500cycle, Vc=4.25V, other voltage battery cores can be according to this rules.
The setting of the universal Vc values of current phone is constant after being fixed generally according to some value specified in battery specifications book, in this way
Way is a kind of safer design, because battery is actually reached battery core electricity when constant-voltage point due to the presence of internal resistance
Pressure is also much not up to the Vc values of battery, this dummy values bigger in the case of fast charge, cause the CV stages charge often to expend it is very long
Time, scheme provided herein be can slightly improve (occurrence need by actually continuously attempts to debugging in by measure electricity
Core voltage value goes one appropriate value within the scope of nominal voltage of selection, such as 20mv~50mv generally can be improved) enter CV
This Vc value Vcv of pattern, and can be ever-reduced according to electric current in charging process while (charging reducing this in real time
The open-circuit voltage of battery core, adjustment charging nominal voltage, such as battery core voltage are constantly detected in journey and rises 5mv, and nominal voltage just drops
Low 5mv ensures final fully charged is pressed within the scope of battery nominal voltage) a Vcv values, it is correspondingly improved the current value for terminating charging
Icv, in order to it is final fully charged when battery core voltage also in normal range (NR) (this value have in battery specifications book it is dated, such as one
Nominal 4.4V batteries, ranging from 4.4+/- 0.05V), this technology requirement internal resistance of cell value r is the smaller the better, and (general r is less than
100m Ω are satisfiable, generally require to be less than 50m Ω for rushing battery soon), ADC digits are higher to support adjustment
Step more more accurate better (ADC number of significant digit more preferably greater than 10bit).The effect that this scheme obtains is (general here compared with common solution
Logical scheme refers to the PE schemes of MTK on the market, high pass QC schemes, the VOOC schemes of OPPO) charging time reduce 20min
Left and right, it may be said that be considerable.
As shown in Fig. 2, a kind of safe charging management system, including：
Detection module is detected for the state to adapter and battery, and the result detected is fed back to charging
Execution module；
Charge execution module, is analyzed for the testing result to detection module, and according to the state of battery, to adaptation
Device assigns charge mode instruction：
If detecting, adapter and battery are undesirable, do not enter charging；
If detecting, adapter and battery are good, and
When cell voltage is in 1.5V~3.0V, into precharge mode；
When cell voltage is in 3.0V~4.4V, into constant current mode；
When cell voltage is in 4.4V, into constant voltage mode pattern.
Technical solution of the present invention and conventional art the difference is that dynamic constant pressure point controls, (herein referred in safe range
As long as be battery open-circuit voltage be no more than in the voltage range of specification i.e. usually said 4.4V/4.35V this
Voltage is all in safe range) to realize control and the constant-voltage charge rank of constant pressure point more than the constant-voltage value of battery specifications book
The charging scheme of section is realized that the entire charge cycle of shortening reaches so as to shorten constant current and constant voltage charging phase time and is more rapidly pacified
Completely charged purpose；In addition increase battery capacity is measured in real time algorithm (battery capacity real time algorithm by every
The primary complete charging-discharging cycle of battery may be implemented in 100cycle under current voltameter technology), according to capacity after aging
The case where reduction, adjusts constant-current charge electric current and constant-voltage charge voltage in real time, achievees the purpose that more reasonable benefit/risk uses.Due to
Capacity has certain decaying to cell degradation compared with when initial capacity after a period of use, if still with the n multiplying powers of raw capacity Q0
If going charging, then current rate of charge is exactly u=n*Q0/Qe, u at this time>N is more than the maximum that battery can be supported
Charging current multiplying power n, in addition the constant pressure value Vc of CV patterns be also there are kindred circumstances, with the aging of battery, battery it is final
Constant pressure value also can constantly decline, if also according to original relatively high constant pressure value to causing over-charging of battery situation, so
The constant pressure value of dynamic adjustment battery be it is extraordinary a little, both the above technology has the service life of battery and safety very big
Promotion.
In addition dynamic adjusts being advantageous in that the time Tcc for extending CC patterns while shortening CV patterns for constant pressure value
Time Tcv, as you know CV patterns generally require for a long time, the present invention in technology can integrally improve filling for battery
Electrical efficiency greatly shortens the charging time
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of safe charging management method, it is characterised in that：Including following concrete operation step：
S1：Detection before charging, whether test adaptor and the state of battery are normal when charger is inserted into, and normally then enter next
Step, does not enter charging if detecting that adapter and battery are undesirable；
S2:Charge mode selects, and to enter following three ranks according to two condition criterions of battery temperature, cell voltage detected
Which of the section stage：1.5V~3.0V Pre-C (precharge) pattern, 3.0V~4.4V CC (constant current) pattern, 4.4V CV
(constant pressure) pattern；
S3:Charging current is arranged according to custom requirements in precharge mode, precharge mode, if detection reaches constant current in real time for charging
Charge condition enters CC patterns；
S4:The charging current of constant current mode, CC patterns is not more than nQe, charging according to the battery total capacity setting Icc currently tested
If detection reaches constant-voltage charge condition and enters CV patterns in real time；
S5:Constant voltage mode, constant pressure adjust percentage D, if original constant-voltage value is V0, specific algorithm is as follows：Test electricity first
The charge and discharge mode in pond, the cycle-index and capacity dynamic adjustment constant-voltage value that the charging voltages of CV patterns is recorded according to battery
Vd and dynamic parameter include temperature T, internal resistance r, voltage V, capacity Q, percentage D one-to-one correspondence, then form what mobile phone was supported
Definition format is imported into mobile phone, is obtained just in mobile phone operational process by reading temperature, voltage value and other software parameter
Beginning volume percent D0, the follow-up electricity then calculated by voltameter obtain the corresponding percentage D of real time electrical quantity；Due to the use of
Cell degradation causes capacity to be decayed in the process, to read the corresponding battery voltage value of current capacity from battery parameter table
It is set as the control battery constant pressure value of current CV patterns.
2. a kind of safe charging management method according to claim 1, it is characterised in that：NQe is in step S4：N is
Specifications can support that maximum discharge-rate, Qe are the battery total capacity detected in real time, and battery holds after a period of use for aging
Amount has certain decaying compared with when initial capacity, if still going charging with the n multiplying powers of raw capacity Q0, current charging
Multiplying power is exactly u=n*Q0/Qe, at this time u>N is more than the maximum charging current multiplying power n that battery can be supported, in this way to the battery longevity
Life and safety are all serious unfavorable.
3. a kind of safe charging management method according to claim 1, it is characterised in that：Current CV patterns in step S5
Control battery constant pressure value (Vc) can also be arranged by universal experience value：
<150cycle, Vc=V0=4.4V；
150~300cycle, Vc=4.35V；
300~500cycle, Vc=4.30V；
>The battery of 500cycle, Vc=4.25V, other voltage battery cores can be according to this rules.
4. a kind of charging management system of safety according to any one of claim 1-3, which is characterized in that including：
Detection module is detected for the state to adapter and battery, and the result detected is fed back to charging and is executed
Module；
Charge execution module, is analyzed for the testing result to detection module, and according to the state of battery, under adapter
It is instructed up to charge mode：
If detecting, adapter and battery are undesirable, do not enter charging；
If detecting, adapter and battery are good, and
When cell voltage is in 1.5V~3.0V, into precharge mode；
When cell voltage is in 3.0V~4.4V, into constant current mode；
When cell voltage is in 4.4V, into constant voltage mode pattern.
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| CN201810423727.9A CN108649631A (en) | 2018-05-06 | 2018-05-06 | A kind of safe charging management method and system |
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| CN201810423727.9A CN108649631A (en) | 2018-05-06 | 2018-05-06 | A kind of safe charging management method and system |
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Family
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212604A (en) * | 2019-05-30 | 2019-09-06 | 东莞盛世科技电子实业有限公司 | Charging method, charger and storage medium |
| CN110534827A (en) * | 2019-08-23 | 2019-12-03 | 江西优特汽车技术有限公司 | A kind of charging method of series-connected cell group |
| CN111231766A (en) * | 2020-03-03 | 2020-06-05 | 广州小鹏汽车科技有限公司 | Intelligent charging control method for electric automobile, electric automobile and device |
| CN112332488A (en) * | 2020-11-06 | 2021-02-05 | 清远市亿源电源有限公司 | Lead-acid battery charger and charging method |
| CN112332484A (en) * | 2020-10-28 | 2021-02-05 | 合肥联宝信息技术有限公司 | Battery charging control method and device, storage medium and electronic equipment |
| CN112448052A (en) * | 2019-08-29 | 2021-03-05 | 北京小米移动软件有限公司 | Battery charging control method and device |
| CN117318255A (en) * | 2023-11-30 | 2023-12-29 | 北京中铁建电气化设计研究院有限公司 | Battery state analysis system and method based on big data visualization |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212604A (en) * | 2019-05-30 | 2019-09-06 | 东莞盛世科技电子实业有限公司 | Charging method, charger and storage medium |
| CN110212604B (en) * | 2019-05-30 | 2024-02-06 | 东莞盛世科技电子实业有限公司 | Charging method, charger and storage medium |
| CN110534827A (en) * | 2019-08-23 | 2019-12-03 | 江西优特汽车技术有限公司 | A kind of charging method of series-connected cell group |
| CN112448052A (en) * | 2019-08-29 | 2021-03-05 | 北京小米移动软件有限公司 | Battery charging control method and device |
| CN112448052B (en) * | 2019-08-29 | 2022-07-01 | 北京小米移动软件有限公司 | Battery charging control method and device |
| CN111231766A (en) * | 2020-03-03 | 2020-06-05 | 广州小鹏汽车科技有限公司 | Intelligent charging control method for electric automobile, electric automobile and device |
| CN111231766B (en) * | 2020-03-03 | 2021-10-12 | 广州小鹏汽车科技有限公司 | Intelligent charging control method for electric automobile, electric automobile and computer device |
| CN112332484A (en) * | 2020-10-28 | 2021-02-05 | 合肥联宝信息技术有限公司 | Battery charging control method and device, storage medium and electronic equipment |
| CN112332484B (en) * | 2020-10-28 | 2022-03-29 | 合肥联宝信息技术有限公司 | Battery charging control method and device, storage medium and electronic equipment |
| CN112332488A (en) * | 2020-11-06 | 2021-02-05 | 清远市亿源电源有限公司 | Lead-acid battery charger and charging method |
| CN117318255A (en) * | 2023-11-30 | 2023-12-29 | 北京中铁建电气化设计研究院有限公司 | Battery state analysis system and method based on big data visualization |
| CN117318255B (en) * | 2023-11-30 | 2024-02-20 | 北京中铁建电气化设计研究院有限公司 | Battery state analysis system and method based on big data visualization |
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Application publication date: 20181012 |