CN101110521A - Charging device and method for nickel-hydrogen battery - Google Patents
Charging device and method for nickel-hydrogen battery Download PDFInfo
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- CN101110521A CN101110521A CNA2007101205028A CN200710120502A CN101110521A CN 101110521 A CN101110521 A CN 101110521A CN A2007101205028 A CNA2007101205028 A CN A2007101205028A CN 200710120502 A CN200710120502 A CN 200710120502A CN 101110521 A CN101110521 A CN 101110521A
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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
Abstract
The present invention relates to a charging equipment for nickel-hydrogen batteries, which comprises a power source management unit, a charging unit and a nickel-hydrogen battery connected with each other and is characterized in that the power source management unit is composed of a charging control module. Wherein, the charging unit is composed of a trickle charging control circuit, a constant current control circuit, a constant voltage control circuit, a charging mode control circuit and a charging circuit. The charging mode control module is connected with the charging control module. The trickle charging control circuit, the constant current control circuit and the constant voltage control circuit are connected in parallel and respectively connected with the charging circuit and the charging control module. The charging circuit is connected with the nickel-hydrogen battery. In addition, the charging control module controls the charging unit to select the constant current charging, the trickle charging or the constant voltage charging to charge the battery according to voltage of the nickel-hydrogen battery. The present invention can enhance nickel-hydrogen battery charging performance, prolong nickel- hydrogen service life and ensure battery safety.
Description
Technical field
The present invention relates to Ni-MH battery, relate in particular to a kind of charging device and method of Ni-MH battery.
Background technology
In the existing wireless terminal, some wireless terminal uses Ni-MH battery.The most of constant voltage charging method that adopts of Ni-MH battery.Constant voltage charging method brings four problems: the first, and charging current descends with the rising of cell voltage, and the charging interval is long; The second, owing to the influence of sampling feedback resistance, charging voltage has certain error, makes the charging effect difference consistency of product poor; Three, when charger cross put after, battery can't be full of fully, do not satisfy the stand-by time requirement, and battery charging voltage phenomenon can appear overcharging when too high, has accident potential; Four, the Ni-MH battery performance difference of different manufacturers, charging effect is also different under the same charging voltage.Above problem not only influences the performance of wireless terminal, and very big to the influence in useful life of Ni-MH battery.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of charging device and method of Ni-MH battery, solves the problem that Ni-MH battery uses constant voltage charging method to bring, to increase the useful life of Ni-MH battery.
The invention provides a kind of charging device of Ni-MH battery, comprise interconnective Power Management Unit, charhing unit, Ni-MH battery, described Power Management Unit comprises charge control module, described charhing unit comprises the trickle charge control circuit, constant-current control circuit, constant-voltage control circuit, charge mode control circuit, charging circuit, described charge mode control module is connected with described charge control module, described trickle charge control circuit, described constant-current control circuit is in parallel with described constant-voltage control circuit and be connected with described charge control module with described charging circuit respectively, described charging circuit is used to connect Ni-MH battery, and described charge control module is selected constant current charge according to the described charhing unit of the voltage control of Ni-MH battery, trickle charge or constant voltage charge pattern are charged.
Also comprise the timing control module that is used to calculate the charging interval, described timing control module is connected with described charge control module, and described charge control module is used to judge whether the charging interval is overtime.
The battery temperature testing circuit that also comprises Ni-MH battery, described battery temperature testing circuit is connected with described charge control module, and described charge control module is used to judge whether battery temperature transfinites.
The battery body of described Ni-MH battery comprises thermistor.
The battery ID circuit that also comprises Ni-MH battery, described battery ID circuit is connected with described charge control module, and described charge control module is used for battery ID is discerned, and described Ni-MH battery charge parameter is set.
Also comprise power supply switch circuit and power supply adaptor, described power supply switch circuit is connected with described Power Management Unit, described charhing unit, described power supply adaptor, described Ni-MH battery respectively; Described power supply adaptor also is connected with described Power Management Unit.
Described Power Management Unit also comprises the external power source detection module, and described external power source detection module is connected with described power supply adaptor, described power supply switch circuit and described charging control circuit respectively.
The invention provides a kind of nickel-hydrogen battery charging method, comprising:
Step 1, Power Management Unit detects the voltage of Ni-MH battery, need to judge whether charging, if do not need charging, stops charging or by the adapter power supply, charges execution in step 2 if desired;
Step 2, Power Management Unit judge that whether Ni-MH battery is put excessively, if not, carries out constant current charge, if carry out trickle charge;
Step 3, when carrying out trickle charge, cell voltage reaches first preset value, then carries out constant current charge;
Step 4 when carrying out constant current charge, if voltage reaches second preset value, is then carried out constant voltage charge.
When carrying out constant current charge, also comprise step 901, the charge control module of Power Management Unit judges whether the charging interval is overtime, is used to judge whether to stop charging.
When carrying out constant current charge, also comprise step 1001, the charge control module of Power Management Unit judges that whether battery temperature transfinites, and is used to adjust the constant current charge electric current.
Also comprise step 1101 before the described step 1, the charge control module identification battery ID of Power Management Unit, and the battery charge parameter is set.
In the step 1, if do not need charging, and by after the adapter power supply, judge cell voltage second preset value that whether discharges, if carry out trickle charge, and judge whether cell voltage reaches the 3rd preset value, otherwise continuation is powered by adapter; If cell voltage reaches the 3rd preset value, then stop charging, otherwise, proceed trickle charge.
Also comprise step 1301, after charging is finished, power by adapter.
The present invention can improve the Ni-MH battery charging performance, prolongs the Ni-MH battery life-span, and has guaranteed the fail safe of battery.
Description of drawings
Fig. 1 is a Ni-MH battery charging device structure chart provided by the invention;
Fig. 2 is a nickel-hydrogen battery charging method flow chart provided by the invention.
Embodiment
In the technical scheme provided by the invention: on battery body, increase thermistor, utilize charge control module, realize the automatic temperature-adjusting control of charging; Measured values such as the voltage by obtaining battery, electric current, temperature are realized the control to battery status, charged state, have guaranteed the performance of battery by trickle charge, constant current quick charge, constant voltage low current charge isotype; The battery of different manufacturers, its identifier (ID) difference, by the identification of charge control module to battery ID, enable different constant voltage charge voltage, adapt to the performance of different manufacturers battery, because the battery performance difference of each producer, so constant voltage charge voltage is different, as: be all the 7.2V battery, first factory uses the 8.4V charging effect best, and second factory but uses the 8.6V charging effect best; Add the charging timing control module, unusual battery is protected; Power supply adaptor is automaticallyed switch, and under the normal situation of electrical network, if battery is full of electricity, terminal is only with the adapter power supply, if the battery electric quantity deficiency, then adapter charges to the terminal power supply with to battery simultaneously; Adopt Ni-MH battery power supply if electrical network is undesired, prolong Ni-MH battery useful life to greatest extent.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
In Fig. 1, Ni-MH battery 100 links to each other with Power Management Unit 200, charhing unit 300; Power Management Unit 200 also links to each other with power supply adaptor 10, charhing unit 300 and terminal 400 except that with Ni-MH battery 100 links to each other; Power supply adaptor 10 removes and links to each other with Power Management Unit 200, also links to each other with power supply switch circuit 30; Timing control module 20 links to each other with Power Management Unit 200 in addition, and power supply switch circuit 30 links to each other with Ni-MH battery 100, Power Management Unit 200, charhing unit 300 and power supply adaptor 10 respectively.
In the embodiment shown in fig. 1, connecting terminal 400 start of power supply adaptor 10 after, whether the external power source in the Power Management Unit 200 to detect power supply adaptors 10 power supplies normal if detecting 201; Charge control module 203 is received from battery ID circuit 102, battery voltage sampling module 202, external power source and is detected 201 signals of sending here simultaneously, judges comprehensively whether battery needs charging, adopts which kind of battery parameter charging.Battery parameter is decided according to battery ID circuit 102.If do not need charging, then switch to power supply adaptor 10 power supplies, otherwise start charge function by power supply switch circuit 30.Power supply adaptor 10 is the terminal power supply by power distribution module 204 simultaneously.If external power source detects 201 and do not detect power supply adaptor 10 or power supply adaptor 10 power supplies are undesired, then power supply switch circuit 30 switches to Ni-MH battery 100 and powers for terminal by power distribution module 204.In the charging process, the charging process of Ni-MH battery 100 temperature that Ni-MH battery 100 voltages that charge control module 203 arrives according to battery voltage sampling module 202 real-time samplings, battery temperature testing circuit 103 are measured, timing control module 20 signal synthesis control Ni-MH battery 100.
In whole charging process, by power supply adaptor 10 power supplies, charge mode control circuit 305 starts constant-current control circuit 302, constant-voltage control circuit 303 and trickle control circuit 304 according to the different control signals of charge control module 203.Charging is finished by charging circuit 301, and three control circuits are just controlled charging circuit and finished different charge modes.In charging process, battery temperature testing circuit 103, battery voltage sampling module 202, external power source detection 201 and timing control module 20 pass to charge control module 203 with information separately in real time, by charge control module 203 control charging processes.Power distribution module 204 is finished the DC-DC function, for terminal 400 provides multiple voltage.
Ni-MH battery 100 is made of battery body 101, battery ID circuit 102 and battery temperature testing circuit 103.
In embodiment illustrated in fig. 2, it is charging method flow chart provided by the invention, it is by each circuit or module among Fig. 1 battery current state, charged state and control information to be upgraded, and carries out the detection of battery status, adapter and charging and to the control of hardware by each circuit or module among Fig. 1.
In the concrete enforcement, behind the starting up of terminal, can discern battery ID, nonterminal standard configuration battery terminal provides the shutdown of prompting back, identification is behind the standard configuration battery charge parameter to be provided with, like this standard charging voltage of battery etc. meanwhile obtains the measured values such as voltage, electric current, temperature of battery, and these measured values are to be normative reference with mean value.Whether test adaptor connects simultaneously, and whether normal, do not connect or the undesired powered battery of then using of powering if powering.Detect adapter connects and power supply is normal then determines whether charge according to measured values such as the voltage that obtains battery, electric current, temperature, battery electric quantity does not charge when full, continues by the adapter power supply, when needing charging, charging timework, the voltage according to battery determines charge mode simultaneously.In charging process, according to measured values such as the voltage that obtains battery in real time, electric current, temperature decision charged state.In order to protect battery, also can stop to the back charging during chargometer.
Under the situation that adapter and battery all exist, power supply is mainly born by adapter, but battery can take place to discharge slowly, when reducing to a certain voltage according to the voltage that obtains battery, charging part branch carries out trickle charge to battery, the voltage when reaching the battery Full Charge Capacity, and trickle charge finishes.
Nickel-hydrogen battery charging method flow process shown in Figure 2 is as follows:
Starting up of terminal, beginning charging flow 501, terminal recognition battery ID 502, if non-first wife's battery, after first wife's battery is used in suggestion, shutdown 503, if first wife's battery, set battery charge parameter 504, whether test adaptor connects 505, if not, powered battery 506, if carry out battery voltage detection 524, and need to judge whether charging 507:
If not, adapter power supply 508, and judge whether battery discharges into certain voltage (being voltage 2) 521, if not, then the adapter power supply 508, if then trickle charge 522, and judge whether cell voltage arrives voltage 3 (being the battery maximum voltage), if then carry out trickle charge 522, otherwise stop to charge 520, adapter powers 508;
If, when carrying out chargometer 509, carry out battery voltage detection 524, and judge whether battery is crossed and put 510, if, trickle charge 511 judges whether battery reaches voltage 1 (voltage promptly shuts down) 512, if not, trickle charge 511, if constant current charge 513 if battery did not have to put, then carries out constant current charge 513, and carry out battery temperature and detect 525, judge whether battery temperature transfinites 514, if adjust constant current charge electric current 526, carry out constant current charge 513, if battery temperature does not transfinite, then carry out battery voltage detection 524, and judge charging whether overtime 515, if, stop to charge 520, adapter powers 508, otherwise, judge whether cell voltage reaches voltage 2 (being low pressure warning voltage) 516, if not, carry out constant current charge 513, if, carry out constant voltage charge 517, and judge whether temperature transfinites 518, if stop to charge 520, adapter powers 508, if not, judge that then whether overtime charging 519, if not, carry out constant voltage charge 517, if, stopping to charge 520, adapter powers 508.
Those skilled in the art can also carry out various modifications to above content under the condition that does not break away from the definite the spirit and scope of the present invention of claims.Therefore scope of the present invention is not limited in above explanation, but determine by the scope of claims.
Claims (13)
1. the charging device of a Ni-MH battery, comprise interconnective Power Management Unit, charhing unit, Ni-MH battery, it is characterized in that, described Power Management Unit comprises charge control module, described charhing unit comprises the trickle charge control circuit, constant-current control circuit, constant-voltage control circuit, charge mode control circuit, charging circuit, described charge mode control module is connected with described charge control module, described trickle charge control circuit, described constant-current control circuit is in parallel with described constant-voltage control circuit and be connected with described charge control module with described charging circuit respectively, described charging circuit is used to connect Ni-MH battery, and described charge control module is selected constant current charge according to the described charhing unit of the voltage control of Ni-MH battery, trickle charge or constant voltage charge pattern are charged.
2. charging device as claimed in claim 1 is characterized in that, also comprises the timing control module that is used to calculate the charging interval, and described timing control module is connected with described charge control module, and described charge control module is used to judge whether the charging interval is overtime.
3. charging device as claimed in claim 1 is characterized in that, also comprises the battery temperature testing circuit of Ni-MH battery, and described battery temperature testing circuit is connected with described charge control module, and described charge control module is used to judge whether battery temperature transfinites.
4. charging device as claimed in claim 3 is characterized in that the battery body of described Ni-MH battery comprises thermistor.
5. charging device as claimed in claim 3, it is characterized in that also comprise the battery ID circuit of Ni-MH battery, described battery ID circuit is connected with described charge control module, described charge control module is used for battery ID is discerned, and described Ni-MH battery charge parameter is set.
6. charging device as claimed in claim 3 is characterized in that, also comprises power supply switch circuit and power supply adaptor, and described power supply switch circuit is connected with described Power Management Unit, described charhing unit, described power supply adaptor, described Ni-MH battery respectively; Described power supply adaptor also is connected with described Power Management Unit.
7. charging device as claimed in claim 3, it is characterized in that, described Power Management Unit also comprises the external power source detection module, and described external power source detection module is connected with described power supply adaptor, described power supply switch circuit and described charging control circuit respectively.
8. a nickel-hydrogen battery charging method that utilizes any one described charging device among the claim 1-7 is characterized in that, comprising:
Step 1, Power Management Unit detects the voltage of Ni-MH battery, need to judge whether charging, if do not need charging, stops charging or by the adapter power supply, charges execution in step 2 if desired;
Step 2, Power Management Unit judge that whether Ni-MH battery is put excessively, if not, carries out constant current charge, if carry out trickle charge;
Step 3, when carrying out trickle charge, cell voltage reaches first preset value, then carries out constant current charge;
Step 4 when carrying out constant current charge, if voltage reaches second preset value, is then carried out constant voltage charge.
9. charging method as claimed in claim 8 is characterized in that, when carrying out constant current charge, also comprises step 901, and the charge control module of Power Management Unit judges whether the charging interval is overtime, is used to judge whether to stop charging.
10. charging method as claimed in claim 8 is characterized in that, when carrying out constant current charge, also comprises step 1001, and the charge control module of Power Management Unit judges that whether battery temperature transfinites, and is used to adjust the constant current charge electric current.
11. charging method as claimed in claim 8 is characterized in that, also comprises step 1101 before the described step 1, the charge control module identification battery ID of Power Management Unit, and the battery charge parameter is set.
12. charging method as claimed in claim 8, it is characterized in that, in the step 1, if do not need charging, and by after the adapter power supply, judge cell voltage second preset value that whether discharges, if carry out trickle charge, and judge whether cell voltage reaches the 3rd preset value, otherwise, continue to power by adapter; If cell voltage reaches the 3rd preset value, then stop charging, otherwise, proceed trickle charge.
13., it is characterized in that as any described charging method of claim 8 to 12, also comprise step 1301, after charging is finished, power by adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101205028A CN101110521A (en) | 2007-08-20 | 2007-08-20 | Charging device and method for nickel-hydrogen battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101205028A CN101110521A (en) | 2007-08-20 | 2007-08-20 | Charging device and method for nickel-hydrogen battery |
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| CN101110521A true CN101110521A (en) | 2008-01-23 |
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| CNA2007101205028A Pending CN101110521A (en) | 2007-08-20 | 2007-08-20 | Charging device and method for nickel-hydrogen battery |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694889A (en) * | 2009-10-20 | 2010-04-14 | 中兴通讯股份有限公司 | Intelligent charging method and device |
| CN101877495A (en) * | 2009-04-30 | 2010-11-03 | 深圳富泰宏精密工业有限公司 | Charging indication circuit and portable electronic device applying same |
| CN101488594B (en) * | 2009-02-16 | 2011-07-13 | 中兴通讯股份有限公司 | Management method for battery electric power |
| CN102324581A (en) * | 2011-07-22 | 2012-01-18 | 辽宁九夷三普电池有限公司 | Charging method for trickle charge or standard charge of rechargeable nickel-hydrogen storage battery |
| CN102570558A (en) * | 2012-03-26 | 2012-07-11 | 苏州工业职业技术学院 | Intelligent charger of nickel-hydrogen nickel-cadmium battery and control method thereof |
| CN102623768A (en) * | 2012-03-30 | 2012-08-01 | 青岛海信移动通信技术股份有限公司 | Multi-battery charging method and device and handheld mobile terminal |
| CN102842740A (en) * | 2012-08-31 | 2012-12-26 | 东莞宇龙通信科技有限公司 | Terminal and charging current regulating method |
| CN103199597A (en) * | 2012-01-06 | 2013-07-10 | 鸿富锦精密工业（深圳）有限公司 | Battery charging system and battery charging method |
| CN103579703A (en) * | 2012-07-26 | 2014-02-12 | 中国移动通信集团甘肃有限公司 | Charging method and system for battery pack |
| CN103986125A (en) * | 2014-05-26 | 2014-08-13 | 杭州电子科技大学 | Method for overcharge protection of lead-acid battery |
| CN104092251A (en) * | 2014-06-16 | 2014-10-08 | 叶林松 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
| WO2014180257A1 (en) * | 2013-10-14 | 2014-11-13 | 中兴通讯股份有限公司 | Method, adapter, terminal, and system for implementing quick charging |
| CN104348218A (en) * | 2013-08-08 | 2015-02-11 | 东芝泰格有限公司 | Charging control device and charging control method |
| CN104410116A (en) * | 2014-11-18 | 2015-03-11 | 深圳市中兴移动通信有限公司 | Quick charging device and quick charging method |
| CN105743171A (en) * | 2016-03-29 | 2016-07-06 | 深圳市安全快充技术有限公司 | Intelligent rapid charging apparatus |
| CN106483462A (en) * | 2015-08-28 | 2017-03-08 | 炬芯（珠海）科技有限公司 | A kind of measuring method of battery charge and device |
| CN111463856A (en) * | 2020-04-03 | 2020-07-28 | 湖北吉利太力飞车有限公司 | Parallel charging method for battery system and battery charging system |
| WO2020181432A1 (en) * | 2019-03-08 | 2020-09-17 | 深圳市丽福科技有限责任公司 | Intelligent quick charge circuit, system, and method for lithium battery |
| 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 |
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2007
- 2007-08-20 CN CNA2007101205028A patent/CN101110521A/en active Pending
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| CN101488594B (en) * | 2009-02-16 | 2011-07-13 | 中兴通讯股份有限公司 | Management method for battery electric power |
| CN101877495A (en) * | 2009-04-30 | 2010-11-03 | 深圳富泰宏精密工业有限公司 | Charging indication circuit and portable electronic device applying same |
| CN101877495B (en) * | 2009-04-30 | 2013-01-09 | 深圳富泰宏精密工业有限公司 | Charging indication circuit and portable electronic device applying same |
| CN101694889B (en) * | 2009-10-20 | 2015-06-03 | 中兴通讯股份有限公司 | Intelligent charging method and device |
| CN101694889A (en) * | 2009-10-20 | 2010-04-14 | 中兴通讯股份有限公司 | Intelligent charging method and device |
| CN102324581A (en) * | 2011-07-22 | 2012-01-18 | 辽宁九夷三普电池有限公司 | Charging method for trickle charge or standard charge of rechargeable nickel-hydrogen storage battery |
| CN103199597A (en) * | 2012-01-06 | 2013-07-10 | 鸿富锦精密工业（深圳）有限公司 | Battery charging system and battery charging method |
| CN102570558A (en) * | 2012-03-26 | 2012-07-11 | 苏州工业职业技术学院 | Intelligent charger of nickel-hydrogen nickel-cadmium battery and control method thereof |
| CN102623768A (en) * | 2012-03-30 | 2012-08-01 | 青岛海信移动通信技术股份有限公司 | Multi-battery charging method and device and handheld mobile terminal |
| CN102623768B (en) * | 2012-03-30 | 2014-08-27 | 青岛海信移动通信技术股份有限公司 | Multi-battery charging method and device and handheld mobile terminal |
| CN103579703A (en) * | 2012-07-26 | 2014-02-12 | 中国移动通信集团甘肃有限公司 | Charging method and system for battery pack |
| CN103579703B (en) * | 2012-07-26 | 2016-03-30 | 中国移动通信集团甘肃有限公司 | A kind of method for charging battery pack and system |
| CN102842740A (en) * | 2012-08-31 | 2012-12-26 | 东莞宇龙通信科技有限公司 | Terminal and charging current regulating method |
| CN104348218A (en) * | 2013-08-08 | 2015-02-11 | 东芝泰格有限公司 | Charging control device and charging control method |
| CN104577231B (en) * | 2013-10-14 | 2019-01-29 | 中兴通讯股份有限公司 | A kind of method that realizing quick charge, adapter, terminal and system |
| CN104577231A (en) * | 2013-10-14 | 2015-04-29 | 中兴通讯股份有限公司 | Method, adaptor, terminal and system for realizing quick charging |
| WO2014180257A1 (en) * | 2013-10-14 | 2014-11-13 | 中兴通讯股份有限公司 | Method, adapter, terminal, and system for implementing quick charging |
| CN103986125A (en) * | 2014-05-26 | 2014-08-13 | 杭州电子科技大学 | Method for overcharge protection of lead-acid battery |
| CN104092251A (en) * | 2014-06-16 | 2014-10-08 | 叶林松 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
| CN104410116A (en) * | 2014-11-18 | 2015-03-11 | 深圳市中兴移动通信有限公司 | Quick charging device and quick charging method |
| CN106483462B (en) * | 2015-08-28 | 2019-09-17 | 炬芯（珠海）科技有限公司 | A kind of measurement method and device of battery charge |
| CN106483462A (en) * | 2015-08-28 | 2017-03-08 | 炬芯（珠海）科技有限公司 | A kind of measuring method of battery charge and device |
| CN105743171A (en) * | 2016-03-29 | 2016-07-06 | 深圳市安全快充技术有限公司 | Intelligent rapid charging apparatus |
| WO2020181432A1 (en) * | 2019-03-08 | 2020-09-17 | 深圳市丽福科技有限责任公司 | Intelligent quick charge circuit, system, and method for lithium battery |
| CN111463856A (en) * | 2020-04-03 | 2020-07-28 | 湖北吉利太力飞车有限公司 | Parallel charging method for battery system and battery charging system |
| 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 |
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