CN104868540A - Implement method for multi-mode charging of lead-acid storage battery - Google Patents
Implement method for multi-mode charging of lead-acid storage battery Download PDFInfo
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- CN104868540A CN104868540A CN201510245480.2A CN201510245480A CN104868540A CN 104868540 A CN104868540 A CN 104868540A CN 201510245480 A CN201510245480 A CN 201510245480A CN 104868540 A CN104868540 A CN 104868540A
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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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Abstract
The invention relates to an implement method for the multi-mode charging of a lead-acid storage battery. The method comprises the steps: a controller detects a voltage of the battery during DC-DC operation; the comparison of a current voltage of the battery with a voltage threshold value of the battery is carried out; the controller controls a gating device CD4051 chip to select a corresponding charging current as the feedback of a main loop if the voltage of the battery is less than the voltage threshold value; a charging current is selected, and a constant-current mode is employed for charging, thereby enabling a system to be stable; the controller controls the gating device CD4051 chip to select an output voltage as the feedback of the main loop if the voltage of the battery is greater than the voltage threshold value, thereby enabling the output voltage to be stable, and carrying out charging in a constant-voltage mode. The method can intelligent select the constant-current mode or the constant-voltage mode for charging according to the condition of the battery while achieving the charging of the battery, thereby achieving short charging time, protecting the battery, and prolonging the service life of the battery.
Description
Technical field
The present invention relates to the charging method of lead acid accumulator, be specifically related to the implementation method of a kind of lead acid accumulator multi-mode charging.
Background technology
In new-energy automobile, the voltage transitions of electrokinetic cell is needed to become low tension, to lead acid battery charge, the most general current way uses DC-DC power module, accumulators is for direct current, but when charging, be generally constant voltage charge, the fair method for electrically of lead acid accumulator mainly contains constant current, constant voltage, constant voltage and current limiting, pulse current charge at present.
Main below several charge mode to be compared:
1. constant current charge
Constant current charge mode is a kind of simple charging method.But constant current charge has its limitation: the shortening that will cause battery life to battery overcharge, and too little current can extend the charging interval.
2. constant voltage charge
Constant voltage charge is easy to just can realize by simple control method.In the starting stage of charging, the voltage due to battery is very low and cause charging current very large, and this can cause damage to battery.After cell voltage reaches certain value, electric current will reduce thereupon.The shortcoming of this charging method is exactly to cause the life-span of temperature rising and battery to reduce, and electric current is very large when starting.And electric current is very little when being full of soon afterwards, the capacity of charger just cannot be made full use of.
3. constant voltage and current limiting method
Constant voltage and current limiting method is actually and constant voltage charge and constant current charge is combined, and can be described as again mixed charged method.In the charging incipient stage, because cell voltage is too low, damage battery for avoiding electric current excessive, just adopt constant current charge method to limit charging current.But when voltage reaches predetermined value, enter constant voltage charging method.Constant voltage and current limiting mode is the charging modes of most of battery manufacturer recommends.Because charge in batteries voltage is lower, charging later stage electric current is very little. and the bubble therefore produced in electrolyte is little, can save electric energy, reduce the temperature rise of storage battery, avoid the pole plate damaging battery.Constant voltage and current limiting mode is a kind of effectively charging modes, and add that overcharging judgement, floating charge control, temperature-compensating etc. just can form a simple charging management system, storage battery can work better under this system.
4. pulse current charge
In charging process, as long as charging current is no more than the acceptable electric current of storage battery, internal storage battery would not produce a large amount of bubbles.The polarization phenomena produced in storage battery can hinder charging, and gas efficiency and temperature rise are significantly raised.Therefore, polarizing voltage is the key factor affecting charging rate.Charging the battery with periodic pulsating current to make battery recover its original state if having time, reduces the impact of polarization phenomena, solves the difficult problem that quick charge faces.But current this charging modes is also in conceptual phase, for the employing great pulse period, the particular problem that duty ratio is how many again and so on also neither one is come to a conclusion.
Based on above analysis, these four kinds of charging modes are not optimum charging modes at present.
Summary of the invention
In order to solve existing method lead acid battery charge efficiency height and the high technical problem that can not meet of battery life simultaneously, the invention provides the adjustable implementation method of a kind of charging mode of lead-acid accumulator, the concrete technical scheme solved the problems of the technologies described above is as follows:
When charging to lead acid accumulator, can according to the situation of battery, the voltage regulating it to export by feedback loop or electric current, realize constant current charge or constant voltage charge by selecting current feedback or Voltage Feedback.
Concrete operation step:
Step one, controller detect cell voltage;
Step 2, compare the size of cell voltage and voltage threshold, if cell voltage is less than threshold value, perform step 3, otherwise perform step 6;
Step 3, controller control gating device and select corresponding charging current to do the feedback of major loop;
Step 4, selection charging current;
Step 5, constant current charge is carried out to storage battery, and get back to step one.
Step 6, controller control gating device and select corresponding voltage to do the feedback of major loop;
Step 7, stable output voltage;
Step 8, constant voltage charge is carried out to storage battery, and get back to step one.
Further, the present invention changes feedback point by selecting the conducting pin of CD4051.
Further, the feedback of dcdc converter of the present invention uses Voltage Feedback and current feedback two kinds of patterns.
Further, the current detecting of dcdc converter of the present invention is converted into voltage, circuit feedback of deciding.
Further, current feedback of the present invention changes the current value of constant current charge by getting different feedback point.
Effective benefit of the present invention solves lead acid accumulator to carry out charge mode problem, according to the situation of battery, and the charge mode of intelligent selection constant current charge or constant voltage charge.By the introduction of background technology, constant current or constant voltage is used to charge the battery, there are respective pluses and minuses in capital, but in conjunction with two kinds of charge modes in charging process, by Software for Design, use first constant current, the pattern of rear constant voltage, to battery life and charge efficiency aspect, all can than simple use constant current and constant voltage advantage more obvious.
Accompanying drawing explanation
Fig. 1 is the flow chart of the inventive method;
Fig. 2 is the truth table of CD4051;
Fig. 3 is voltage feedback module of the present invention;
Fig. 4 is current detection module A of the present invention;
Fig. 5 is feedback of the present invention and control loop;
Fig. 6 is current detection module B of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with drawings and Examples, embodiment of the present invention is described further in detail.It should be noted that, specific embodiment described herein only in order to help to understand the present invention, does not form limitation of the invention.
As shown in Figure 1, the invention provides two kinds of charge modes.Voltage threshold is set, when DC-DC works, controller detects cell voltage, the relatively voltage threshold size of current battery level value and battery, if cell voltage is less than voltage threshold, controller controls charging current corresponding to gating device CD4051 chip selection as the feedback of major loop, selects charging current, and use constant current mode to charge, make system stability; If cell voltage is greater than voltage threshold, controller controls gating device CD4051 chip selection output voltage as the feedback of major loop, makes output voltage stabilization, charges with constant voltage mode.
Concrete operation step:
Step one, controller detect cell voltage;
Step 2, compare the size of cell voltage and voltage threshold, if cell voltage is less than threshold value, perform step 3, otherwise perform step 6;
Step 3, controller control gating device and select corresponding charging current to do the feedback of major loop;
Step 4, selection charging current;
Step 5, constant current charge is carried out to storage battery, and get back to step one.
Step 6, controller control gating device and select corresponding voltage to do the feedback of major loop;
Step 7, stable output voltage;
Step 8, constant voltage charge is carried out to storage battery, and get back to step one.
As shown in Figure 2, be the truth table of the gating device CD4051 used in the present invention.CD4051 has 8 input ports, 3 control ports, 1 output port, and operationally, according to the logic of control port, chip can judge that output port is Na mono-tunnel in 8 road input ports.Utilize the gating characteristics of CD4051, different current detection signals and voltage model is sent in these 8 input ports of its 0-7, just by the state of change 3 control ports, different input currents and voltage signal can be selected, thus realize the switching of constant current mode and constant voltage mode.
Current signal is the voltage signal detected by voltage-type Hall element, obtains different magnitudes of voltage by electric resistance partial pressure, and the corresponding charging current value of each magnitude of voltage, by the gating characteristics of CD4051, selects different electric currents to charge.
As shown in Figure 3, be voltage feedback module of the present invention, comprise optocoupler (301) and controllable accurate source of stable pressure TL431 (302).This module provides reference voltage by TL431 (302), is regulated the magnitude of voltage of U-FK, control the duty ratio of drive singal by adjustment optocoupler On current.
As shown in Figure 4, be current detection module of the present invention.This module is by voltage-type Hall element, output current signal is transformed to voltage signal, voltage signal is carried out dividing potential drop by different resistance 402,403, obtain different magnitudes of voltage, by amplifier 401, this voltage is fed back, makes current value remain fixed value always, export constant current.Now the voltage of dcdc converter is just the terminal voltage of battery, realizes constant current charge.
As shown in Figure 5, be feedback of the present invention and control loop module.This module is by sending the feedback signal of electric current or voltage into SG3525 (501), and this chip internal has a comparator, and has a reference voltage, and feedback signal and the reference voltage of feeding compare, and regulate the duty ratio of driving pulse.
As shown in Figure 6, be the gating module of CD4051 of the present invention (606).This module converts current signal to different voltage signal by resistance 601-605, send into the different pins of CD4051 (606), carry out different charging current gatings, 3 control pin A, B, C is the signal that control chip provides, and selects conductive channel, to select constant current or constant voltage mode charging.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an implementation method for lead acid accumulator multi-mode charging, is characterized in that, changes charge mode by the feedback control loop changing circuit.
2. the implementation method of a kind of lead acid accumulator multi-mode charging according to claim 1, it is characterized in that, the concrete steps of the method are:
Step one, controller detect cell voltage;
Step 2, compare the size of cell voltage and voltage threshold, if cell voltage is less than threshold value, perform step 3, otherwise perform step 6;
Step 3, controller control gating device and select corresponding charging current to do the feedback of major loop;
Step 4, selection charging current;
Step 5, constant current charge is carried out to storage battery, and get back to step one;
Step 6, controller control gating device and select corresponding voltage to do the feedback of major loop;
Step 7, stable output voltage;
Step 8, constant voltage charge is carried out to storage battery, and get back to step one.
3. the implementation method of a kind of lead acid accumulator multi-mode charging according to claim 1, is characterized in that, changing feedback point by selecting the conducting pin of CD4051.
4. the implementation method of a kind of lead acid accumulator multi-mode charging according to claim 2, it is characterized in that, the feedback of dcdc converter uses Voltage Feedback and current feedback two kinds of patterns.
5. the implementation method of a kind of lead acid accumulator multi-mode charging according to claim 2, it is characterized in that, the current detecting of dcdc converter is converted into voltage, circuit feedback of deciding.
6. the implementation method of a kind of lead acid accumulator multi-mode charging according to claim 1, it is characterized in that, described current feedback changes the current value of constant current charge by getting different feedback point.
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| CN201510245480.2A CN104868540A (en) | 2015-05-14 | 2015-05-14 | Implement method for multi-mode charging of lead-acid storage battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978103A (en) * | 2016-06-30 | 2016-09-28 | 努比亚技术有限公司 | Charging control device and method |
| CN108293167A (en) * | 2015-11-16 | 2018-07-17 | 索诺瓦公司 | The method to charge for the battery to hearing aid and the hearing aid with battery charging unit |
| CN111769338A (en) * | 2020-07-10 | 2020-10-13 | 陕西航空电气有限责任公司 | Method for charging storage battery by aviation power distribution product charger |
| CN115378071A (en) * | 2022-08-16 | 2022-11-22 | 惠州市乐亿通科技有限公司 | Charging control method, system, device, vehicle-mounted charging module and storage medium |
| CN116073488A (en) * | 2023-03-07 | 2023-05-05 | 钰泰半导体股份有限公司 | Method, circuit and device for carrying out minimum differential pressure charging on intelligent wearable equipment |
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| CN104362686A (en) * | 2014-10-16 | 2015-02-18 | 小米科技有限责任公司 | Charger and charging method |
| EP2860842A1 (en) * | 2013-10-11 | 2015-04-15 | Dialog Semiconductor GmbH | Method for charging a battery |
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2015
- 2015-05-14 CN CN201510245480.2A patent/CN104868540A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2860842A1 (en) * | 2013-10-11 | 2015-04-15 | Dialog Semiconductor GmbH | Method for charging a battery |
| CN104362686A (en) * | 2014-10-16 | 2015-02-18 | 小米科技有限责任公司 | Charger and charging method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108293167A (en) * | 2015-11-16 | 2018-07-17 | 索诺瓦公司 | The method to charge for the battery to hearing aid and the hearing aid with battery charging unit |
| CN108293167B (en) * | 2015-11-16 | 2021-10-29 | 索诺瓦公司 | Method for charging a battery of a hearing aid and hearing aid with a battery charging unit |
| CN105978103A (en) * | 2016-06-30 | 2016-09-28 | 努比亚技术有限公司 | Charging control device and method |
| CN105978103B (en) * | 2016-06-30 | 2019-05-31 | 努比亚技术有限公司 | A kind of battery charge controller and method |
| CN111769338A (en) * | 2020-07-10 | 2020-10-13 | 陕西航空电气有限责任公司 | Method for charging storage battery by aviation power distribution product charger |
| CN111769338B (en) * | 2020-07-10 | 2023-06-20 | 陕西航空电气有限责任公司 | Method for charging storage battery by aviation distribution product charger |
| CN115378071A (en) * | 2022-08-16 | 2022-11-22 | 惠州市乐亿通科技有限公司 | Charging control method, system, device, vehicle-mounted charging module and storage medium |
| CN115378071B (en) * | 2022-08-16 | 2024-02-20 | 惠州市乐亿通科技股份有限公司 | Charging control method, system, device, vehicle-mounted charging module and storage medium |
| CN116073488A (en) * | 2023-03-07 | 2023-05-05 | 钰泰半导体股份有限公司 | Method, circuit and device for carrying out minimum differential pressure charging on intelligent wearable equipment |
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Application publication date: 20150826 |
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