CN103618361A - Self-adaption charging method and charger - Google Patents
Self-adaption charging method and charger Download PDFInfo
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- CN103618361A CN103618361A CN201310656798.0A CN201310656798A CN103618361A CN 103618361 A CN103618361 A CN 103618361A CN 201310656798 A CN201310656798 A CN 201310656798A CN 103618361 A CN103618361 A CN 103618361A
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Abstract
The invention discloses a self-adaption charging method and a charger. According to the method, the number of batteries to be charged is determined at first, and then a charging voltage and a maximum charging current are set according to the number of the batteries to charge the batteries. The charger comprises an input protection unit, an MCU power supply unit, an MCU, a charging unit and a battery module unit. The self-adaption charging method and the charger achieve the purpose of charging different types of batteries through the same charger, thereby reducing resource waste.
Description
Technical field
The present invention relates to industrial lithium cell charging field, relate in particular to a kind of self adaptation charging method and charger.
Background technology
The battery of traditional industry equipment is mostly single battery and is connected in series (single string), how also a plurality of cell parallels connect the mode of (), but in order to meet the demand of quick charge and high capacity cell, increasing battery adopted that two strings are many also, three strings are many and modes connect, same producer, do different cradles and charging circuit for the battery of different connected modes, not only versatility is poor, has also caused great waste.In addition, industrial lithium electricity, high to performance and capacity requirement, and abstain from very much overshoot and cross to put.
Summary of the invention
The object of the invention is, a kind of self adaptation charging method and charger are provided, to solve the poor problem of existing battery charger versatility.
The invention discloses a kind of self adaptation charging method, said method comprises:
Determine the joint number of battery to be charged;
According to above-mentioned joint number, configuration charging voltage and maximum charging current;
For above-mentioned battery charging.
Preferably, said method is determined the joint number of battery to be charged by the mode of ADC (Analog to Digital Converter, the A-D converter) cell voltage to be charged of sampling.
Preferably, if above-mentioned battery to be charged is intelligent battery, said method is by I2C(Inter-Integrated Circuit) the bus information that reads above-mentioned battery to be charged determines the joint number of battery to be charged.
Preferably, the joint number of above-mentioned battery is single-unit, binodal or three joints.
Preferably, if the joint number of above-mentioned battery is single-unit, its charging voltage is that 4.2V, maximum charging current are 1A;
If the joint number of above-mentioned battery is binodal, its charging voltage is that 8.4V, maximum charging current are 1A;
If the joint number of above-mentioned battery is single-unit, its charging voltage is that 12.6V, maximum charging current are 1A.
The present invention further discloses a kind of adaptive charger, comprise input protection unit, be used to charger that front end input over-voltage over-current protection and the Middle and low frequency noise that suppresses power supply are provided; Battery modules unit, for placing battery to be charged; Charhing unit, is used to battery charging to be charged; Above-mentioned charger also comprises micro-control unit (Micro Control Unit, MCU) and MCU power supply unit, above-mentioned
MCU, for determining the joint number of battery to be charged; And according to above-mentioned joint number, control charging voltage and the maximum charging current of above-mentioned charhing unit;
MCU power supply unit, for the voltage transitions of above-mentioned input protection unit output being become to the operating voltage of above-mentioned MCU, is above-mentioned MCU power supply.
Preferably, above-mentioned MCU, determines the joint number of battery to be charged for the mode of the cell voltage to be charged of sampling by ADC; Or when battery to be charged is intelligent battery, by I2C bus, read the joint number that battery information is determined battery.
Preferably, above-mentioned charger also comprises partial pressure unit and condition indication circuit unit, above-mentioned
Partial pressure unit, for being divided to the voltage of different joint number batteries the range of MCU ADC sampling;
State indication unit, for pointing out charged state.
Preferably, above-mentioned charhing unit is lithium cell charging chip;
Above-mentioned MCU power supply unit is low pressure difference linear voltage regulator (low dropout regulator, LDO).
Preferably, above-mentioned charhing unit, for feeding back to above-mentioned MCU by the charged state of battery;
Above-mentioned MCU, for according to the battery charging state of above-mentioned charhing unit feedback, controls the show state of above-mentioned state indication unit.
The present invention adopts the MCU of low-power consumption, the joint number of on-the-spot test battery to be charged, charges the battery thereby corresponding charge parameter is set, and is guaranteeing that charging inlet defines consistent in the situation that, realize the charging of same charger to dissimilar battery, reduced the wasting of resources.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is self adaptation charging method flow chart of the present invention;
Fig. 2 is the theory diagram of adaptive charger of the present invention;
Fig. 3 is the circuit theory diagrams of input protection unit 01 preferred embodiment in Fig. 2;
Fig. 4 is the circuit theory diagrams of partial pressure unit 03 preferred embodiment in Fig. 2;
Fig. 5 is the circuit theory diagrams of state indication unit 07 preferred embodiment in Fig. 2.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, be self adaptation charging method flow chart of the present invention, specifically comprise the following steps:
Step S01: the joint number N that determines battery to be charged;
In the present invention, the joint number N of battery is chosen as single-unit, binodal or three joints, and the value of N can be 1,2 or 3.
Discharge voltage (single battery is that 3.0V～4.2V, two batteries are that 6.0V～8.4V, three batteries are 9.0V～12.6V) difference due to the battery of different joint numbers, therefore the present invention's battery no matter to be charged is intelligent battery or non intelligent battery, all can determine its joint number by the sample mode of cell voltage of ADC; If battery to be charged is intelligent battery, the present invention can also read battery information by I2C bus and determines its joint number; That is to say, for non intelligent battery, the present invention only has a kind of mode to determine its joint number, and for intelligent battery, the present invention has two kinds of modes to determine its joint number.
Step S02: according to joint number N, configuration charging voltage and maximum charging current;
Work as N=1, while being single battery, charging voltage is configured to 4.2V, and maximum charging current is set to 1A; Work as N=2, while being binodal battery, charging voltage is configured to 8.4V, and maximum charging current is set to 1A; Work as N=3, while being three batteries, charging voltage is configured to 12.6V, and maximum charging current is set to 1A;
Step S03: after charging voltage and maximum charging current configuration successful, start as battery charging.
As shown in Figure 2, be the theory diagram of adaptive charger of the present invention, comprise input protection unit 01, MCU power supply unit 02, partial pressure unit 03, MCU04, charhing unit 05, battery modules unit 06 and state indication unit 07, wherein
As shown in Figure 3, be the circuit theory diagrams of input protection unit 01 preferred embodiment in Fig. 2, comprise electrostatic protection pipe CR1, Schottky diode D1, resettable fuse F1 and by capacitor C 1, C2, the pi type filter that inductance L 1 forms; D1, F1 and pi type filter connect successively, and CR1 one end is connected with D is anodal, one end ground connection; CR1 is for preventing the damage of static to circuit; D1 is for carrying out reverse protection to circuit; F1, for preventing the damage of large electric current to circuit, has overcurrent and overheating protection, auto restore facility; Pi type filter is for reducing alternating current component and the Middle and low frequency noise of input.
MCU power supply unit 02, for the voltage transitions of input protection unit 01 output being become to the operating voltage of MCU04, is MCU04 power supply;
In preferred embodiment, it is MCU04 power supply that MCU power supply unit 02 adopts the LDO of XC6216 series, and the LDO of XC6216 series has: high accuracy, and low noise, can be MCU04 good power supply environment is provided; And built-in current foldback circuit and hot breaking circuit, for the safety of MCU04 provides good guarantee.
As shown in Figure 4, be the circuit theory diagrams of partial pressure unit 03 preferred embodiment in Fig. 2, comprise divider resistance R1, R2 and capacitor C 3, R1 one end is connected with battery modules unit 06; After R2 and C3 are connected in parallel, one end is connected with R1 and MCU04 respectively, other end ground connection; Because the operating voltage of MCU04 is 3.3V, and the discharge voltage in single-lithium-battery pond is 3V～4.2V, the discharge voltage of two joint lithium batteries is 6V～8.4V, and the discharge voltage of three joint lithium batteries is: 9V～12.6V, therefore the voltage that its ADC sampling obtains can not directly be used, the present embodiment makes R1=30K, R2=10K, C3=0.1 μ F, sampled voltage is carried out to dividing potential drop quantification, the discharge voltage in single-lithium-battery pond is 3V～4.2V, and after partial pressure unit 03 dividing potential drop, the quantification voltage obtaining is 0.75～1.05V; The discharge voltage of two joint lithium batteries is 6V～8.4V, and after partial pressure unit 03 dividing potential drop, the quantification voltage obtaining is 1.5～2.1V; The discharge voltage of three joint lithium batteries is: 9V～12.6V, and after partial pressure unit 03 dividing potential drop, the quantification voltage obtaining is 2.25～3.15V; Sampled voltage after dividing potential drop quantizes is all in the operating voltage range of MCU04, and the quantification voltage range that MCU04 can obtain according to sampling, judges the joint number of battery to be charged.
MCU04, determines the joint number of battery to be charged for the mode of the cell voltage of sampling by ADC, or when battery to be charged is intelligent battery, and the id information that also can read battery by I2C bus is determined its joint number; According to above-mentioned joint number, control charging voltage and the maximum charging current of charhing unit 05 and control enabling of charhing unit 05; And according to the battery charging state of charhing unit 05 feedback, the show state of state of a control indicating member 07;
In preferred embodiment, MCU04 adopts Freescale Cortex-M0+ series super low power consuming single chip processor, and it has the ADC of 12bit, and the voltage sample precision of 0.8mV can be provided, and can treat rechargeable battery and carry out voltage sample, to determine battery number;
In preferred embodiment, charhing unit 05 adopts TI(Texas Instrument) lithium cell charging chip that company's model is BQ24133, this chip is applicable to single-unit, binodal, three joint lithium cell chargings, have overcurrent, over-and under-voltage defencive function.
As shown in Figure 5, be the circuit theory diagrams of state indication unit 07 preferred embodiment in Fig. 2, comprise current-limiting resistance R3, R4, red light emitting diodes D3, green LED D2; D3 one end is connected with R4, and one end is connected with MCU04; D2 one end is connected with R3, and one end is connected with MCU04; MCU is luminous by IO port controlling D2, D3, thereby indication different conditions, such as making D2 Chang Liang in charging, is full of electric seasonal D3 Chang Liang, and D3 in season is glittering for abnormal alarm.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in invention contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the change that those skilled in the art carry out and variation do not depart from the spirit and scope of the present invention, all should be in the protection range of claims of the present invention.
Claims (10)
1. a self adaptation charging method, is characterized in that, described method comprises:
Determine the joint number of battery to be charged;
According to described joint number, configuration charging voltage and maximum charging current;
For described battery charging.
2. the method for claim 1, is characterized in that, described method is determined the joint number of battery to be charged by the sample mode of cell voltage to be charged of A-D converter ADC.
3. the method for claim 1, is characterized in that, if described battery to be charged is intelligent battery, the information that described method reads described battery to be charged by I2C bus is determined the joint number of battery to be charged.
4. method as claimed in claim 3, is characterized in that, the joint number of described battery is single-unit, binodal or three joints.
5. method as claimed in claim 4, is characterized in that,
If the joint number of described battery is single-unit, its charging voltage 4.2V, maximum charging current are 1A;
If the joint number of described battery is binodal, its charging voltage 8.4V, maximum charging current are 1A;
If the joint number of described battery is single-unit, its charging voltage 12.6V, maximum charging current are 1A.
6. an adaptive charger, comprises input protection unit, is used to charger that front end input over-voltage over-current protection and the Middle and low frequency noise that suppresses power supply are provided; Battery modules unit, for placing battery to be charged; Charhing unit, is used to battery charging to be charged; It is characterized in that, described charger also comprises micro-control unit MCU and MCU power supply unit, described in
MCU, for determining the joint number of battery to be charged; And according to described joint number, control charging voltage and the maximum charging current of described charhing unit;
MCU power supply unit, for the voltage transitions of described input protection unit output being become to the operating voltage of described MCU, is described MCU power supply.
7. charger as claimed in claim 6, is characterized in that, described MCU determines the joint number of battery to be charged for the mode of the cell voltage to be charged of sampling by ADC; Or when battery to be charged is intelligent battery, the information that reads battery by I2C bus is determined the joint number of battery.
8. the charger as described in claim 6 or 7, is characterized in that, described charger also comprises partial pressure unit and condition indication circuit unit, described in
Partial pressure unit, for being divided to the voltage of different joint number batteries the range of described MCU ADC sampling;
State indication unit, for pointing out charged state.
9. charger as claimed in claim 6, is characterized in that,
Described charhing unit is lithium cell charging chip;
Described MCU power supply unit is low pressure difference linear voltage regulator LDO.
10. the charger as shown in claim 8, is characterized in that,
Described charhing unit, for feeding back to described MCU by the charged state of battery;
Described MCU, for according to the battery charging state of described charhing unit feedback, controls the show state of described state indication unit.
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| CN201310656798.0A CN103618361A (en) | 2013-12-06 | 2013-12-06 | Self-adaption charging method and charger |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772090A (en) * | 2016-12-28 | 2017-05-31 | 深圳市共济科技股份有限公司 | The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell |
| CN108574323A (en) * | 2018-03-23 | 2018-09-25 | 加码技术有限公司 | A kind of battery charge control circuit |
| CN110239372A (en) * | 2019-06-10 | 2019-09-17 | 上海师范大学 | A kind of BMS precharging circuit and its control method |
| CN112446495A (en) * | 2020-12-16 | 2021-03-05 | 安徽仕联电气有限公司 | Quantum computer communication module |
| WO2023273774A1 (en) * | 2021-06-29 | 2023-01-05 | 百富计算机技术（深圳）有限公司 | Pd charging circuit and pos machine |
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| US4639655A (en) * | 1984-04-19 | 1987-01-27 | Westhaver Lawrence A | Method and apparatus for battery charging |
| CN101499674A (en) * | 2008-01-28 | 2009-08-05 | 日立工机株式会社 | Charging system for charging battery pack |
| CN201570884U (en) * | 2009-07-17 | 2010-09-01 | 杨龙兴 | Pulse charger |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4639655A (en) * | 1984-04-19 | 1987-01-27 | Westhaver Lawrence A | Method and apparatus for battery charging |
| CN101499674A (en) * | 2008-01-28 | 2009-08-05 | 日立工机株式会社 | Charging system for charging battery pack |
| CN201570884U (en) * | 2009-07-17 | 2010-09-01 | 杨龙兴 | Pulse charger |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772090A (en) * | 2016-12-28 | 2017-05-31 | 深圳市共济科技股份有限公司 | The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell |
| CN106772090B (en) * | 2016-12-28 | 2019-06-18 | 深圳市共济科技股份有限公司 | The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell |
| CN108574323A (en) * | 2018-03-23 | 2018-09-25 | 加码技术有限公司 | A kind of battery charge control circuit |
| CN110239372A (en) * | 2019-06-10 | 2019-09-17 | 上海师范大学 | A kind of BMS precharging circuit and its control method |
| CN112446495A (en) * | 2020-12-16 | 2021-03-05 | 安徽仕联电气有限公司 | Quantum computer communication module |
| WO2023273774A1 (en) * | 2021-06-29 | 2023-01-05 | 百富计算机技术（深圳）有限公司 | Pd charging circuit and pos machine |
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Application publication date: 20140305 |