CN104682459A - Charging circuit based on constant current-constant voltage-floating charging method of lead acid storage battery - Google Patents
Charging circuit based on constant current-constant voltage-floating charging method of lead acid storage battery Download PDFInfo
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- CN104682459A CN104682459A CN201310618466.3A CN201310618466A CN104682459A CN 104682459 A CN104682459 A CN 104682459A CN 201310618466 A CN201310618466 A CN 201310618466A CN 104682459 A CN104682459 A CN 104682459A
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Abstract
The invention provides a constant current-constant voltage-floating charging three-section type charging method, which aims at sufficiently utilizing the lead acid storage battery pack in the field of power automatic grid distributing, effectively improving the utilization rate and prolonging the service life of the lead acid storage battery pack. The charging method comprises the following charging phases that: (1) constant-current charging: the charging current is constant, the electric quantity of the battery is quickly increased, and the voltage of the battery is increased; (2) constant-voltage charging: the charging voltage is constant, the electric quantity of the battery is continuously increased, and the voltage of the battery is decreased; (3) floating charging: the charging current is decreased to be lower than the threshold value, the charging voltage is decreased to the floating charging voltage, and the battery pack is in a floating charging state. The charging method has the advantages that in the whole design process, the charging current and charging voltage of the battery are detected, so as to switch between the charging phases; the design is realized by an analog circuit, the digital series control is not needed, and the requirement of environment suitability of the power automatic grid distributing is met.
Description
Technical field
The present invention relates to the charge power supply being applicable to various lead-acid battery, be mainly used in power automation distribution field.The service efficiency of effective raising lead acid accumulator and useful life.
Technical background
At present, greatly developing of China's power automation, back-up source generally adopts lead-acid batteries and Li-ion batteries piles, Li-ion batteries piles on useful life and environmental suitability due to lead-acid batteries, but Li-ion batteries piles cost is higher, lead-acid batteries cost is lower, so how to improve the service efficiency of lead-acid batteries and useful life is the problem that current power automation distribution field needs to solve.For service efficiency and the useful life of improving lead-acid batteries, " constant current-constant voltage-floating charge " charging modes has been invented according to the charge characteristic of lead-acid batteries by my company.
Power automation distribution field in the presence of, the charging of back-up source adopts traditional " constant current-floating charge " mode or " invariable power-floating charge " mode, and " constant current-floating charge " charging modes first adopts constant current charges, after being charged to float charge voltage, charging current reduces, and enters floating charge state." invariable power-floating charge " charging modes first adopts constant power charging, and after being charged to float charge voltage, charge power reduces, and enters floating charge state.The charging modes of above two kinds of formulas has a common shortcoming to be exactly, battery charging is not full, batteries can not utilize fully, reduce the utilance of the electricity of battery greatly, long-time battery charging is not full, easily cause being oxidized between battery pole plates, affect the useful life of battery.
For the shortcoming of traditional charging modes, lead-acid batteries " constant current-constant voltage-floating charge " three stage charging system mode, according to the optimum charge characteristic of battery, has been invented by my company, improves utilance and the useful life of lead-acid batteries.
Patent content
The present invention makes full use of in order to power automation distribution field lead-acid batteries, " constant current-constant voltage-floating charge " the three stage charging system mode of employing, the utilance of effective raising lead-acid batteries and useful life, " constant current-constant voltage-floating charge " charging curve as shown in Figure 1.
Each charging stage illustrates:
1. constant-current charging phase: charging current keeps constant, and battery electric quantity increases fast, and cell voltage rises;
2. constant voltage charging phase: charging voltage keeps constant, battery electric quantity continues to increase, and charging current declines;
3. in the floating charge stage: charging current drops to lower than floating charge switching current, be generally arranged on 0.01C (C represents battery capacity), charger charging voltage is reduced to float charge voltage, and battery pack is in floating charge state;
Local implementation principle illustrates:
Constant-current charging phase principle illustrates: the local theory diagram of constant-current charging phase as shown in Figure 2, the charging current of battery pack is gathered by current sampling circuit, after current signal is amplified by operational amplifier, compare with reference voltage signal, adjustment power supply PWM pulsewidth is exported by comparison signal, control pulse width control loop, and then reach the object of constant current charge.
Constant voltage charging phase principle illustrates: constant voltage charging phase local theory diagram as shown in Figure 3, batteries constant current charge, output voltage gathers output voltage signal by output voltage acquisition circuit simultaneously, the output voltage signal collected compares with reference voltage, comparison output signal adjustment PWM pulsewidth, voltage feedback loop works, adjustment PWM pulsewidth, and then reaches the constant object of output voltage.
Floating charge phase principle illustrates: floating charge stage local theory diagram as shown in Figure 4, current sampling circuit gathers current signal, after current signal amplifies by current signal amplifying return circuit, adjustment output voltage collection signal, the voltage signal after adjustment compares with reference voltage, comparison output signal adjustment PWM pulsewidth, voltage feedback loop works, adjustment PWM pulsewidth, and then adjustment output voltage, enter floating charge state.
In whole design invention, by the detection to battery charge, voltage, realize the conversion between each charging stage, the design all adopts analog circuit to realize, do not adopt digit sequence control realization, meet power automation distribution environmental adaptation sexual demand.
Embodiment
The present invention's design is mainly used in power automation distribution field, for the back-up source (lead acid accumulator) in power automation distribution field carries out Charge Management, effectively improves service efficiency and the useful life of lead acid accumulator.
Claims (3)
1. one kind based on lead acid accumulator " constant current-constant voltage-floating charge " mode charging circuit, " constant current-constant voltage-floating charge " the three stage charging system mode of employing, first constant current is to batteries charging, to the charging voltage of battery pack, adopt constant voltage charging method, when constant voltage charge is to 0.01C, change peripheral battery float state.
2. the charging circuit belonging to claim 1, mainly manages for lead acid battery charge.
3. the charging circuit belonging to claim 1, is mainly used in the field of power automation distribution lead-acid battery group power supply in support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310618466.3A CN104682459A (en) | 2013-11-29 | 2013-11-29 | Charging circuit based on constant current-constant voltage-floating charging method of lead acid storage battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310618466.3A CN104682459A (en) | 2013-11-29 | 2013-11-29 | Charging circuit based on constant current-constant voltage-floating charging method of lead acid storage battery |
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| CN104682459A true CN104682459A (en) | 2015-06-03 |
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| CN201310618466.3A Pending CN104682459A (en) | 2013-11-29 | 2013-11-29 | Charging circuit based on constant current-constant voltage-floating charging method of lead acid storage battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107666167A (en) * | 2017-11-21 | 2018-02-06 | 深圳市森树强电子科技有限公司 | A kind of novel three-stage charging management method and device |
| CN108649661A (en) * | 2018-06-15 | 2018-10-12 | 大连海事大学 | T L494-based storage battery three-section type charger |
| CN109450032A (en) * | 2018-12-04 | 2019-03-08 | 北京小米移动软件有限公司 | Processing method, device and the equipment of wireless charging |
| CN112087018A (en) * | 2019-12-09 | 2020-12-15 | 超威电源集团有限公司 | Charger and charging method thereof |
| CN112421137A (en) * | 2020-10-29 | 2021-02-26 | 安徽力普拉斯电源技术有限公司 | Charging voltage matching method for power lead-acid storage battery |
| CN112436570A (en) * | 2020-11-11 | 2021-03-02 | 武汉上水微电子科技有限公司 | Three-section type lead-acid battery charging control circuit |
| CN113178926A (en) * | 2021-05-19 | 2021-07-27 | 臻懿(北京)科技有限公司 | Method and system for controlling balanced charging and discharging of communication base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101246976A (en) * | 2008-03-25 | 2008-08-20 | 东南大学 | Lead acid accumulator charging method and charger thereof |
| CN101872984A (en) * | 2009-06-25 | 2010-10-27 | 上海华魏光纤传感技术有限公司 | Three-step charger |
| CN102130368A (en) * | 2011-02-16 | 2011-07-20 | 江苏技术师范学院 | Preheating charging method of valve-controlled type lead-acid storage battery |
| CN102427147A (en) * | 2011-12-07 | 2012-04-25 | 山东圣阳电源科技有限公司 | Charging method for vehicle lead-acid storage battery |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246976A (en) * | 2008-03-25 | 2008-08-20 | 东南大学 | Lead acid accumulator charging method and charger thereof |
| CN101872984A (en) * | 2009-06-25 | 2010-10-27 | 上海华魏光纤传感技术有限公司 | Three-step charger |
| CN102130368A (en) * | 2011-02-16 | 2011-07-20 | 江苏技术师范学院 | Preheating charging method of valve-controlled type lead-acid storage battery |
| CN102427147A (en) * | 2011-12-07 | 2012-04-25 | 山东圣阳电源科技有限公司 | Charging method for vehicle lead-acid storage battery |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107666167A (en) * | 2017-11-21 | 2018-02-06 | 深圳市森树强电子科技有限公司 | A kind of novel three-stage charging management method and device |
| CN108649661A (en) * | 2018-06-15 | 2018-10-12 | 大连海事大学 | T L494-based storage battery three-section type charger |
| CN108649661B (en) * | 2018-06-15 | 2022-05-13 | 大连海事大学 | TL 494-based storage battery three-section charger |
| CN109450032A (en) * | 2018-12-04 | 2019-03-08 | 北京小米移动软件有限公司 | Processing method, device and the equipment of wireless charging |
| CN109450032B (en) * | 2018-12-04 | 2021-08-24 | 北京小米移动软件有限公司 | Wireless charging processing method, device and equipment |
| CN112087018A (en) * | 2019-12-09 | 2020-12-15 | 超威电源集团有限公司 | Charger and charging method thereof |
| CN112421137A (en) * | 2020-10-29 | 2021-02-26 | 安徽力普拉斯电源技术有限公司 | Charging voltage matching method for power lead-acid storage battery |
| CN112436570A (en) * | 2020-11-11 | 2021-03-02 | 武汉上水微电子科技有限公司 | Three-section type lead-acid battery charging control circuit |
| CN112436570B (en) * | 2020-11-11 | 2024-01-26 | 武汉上水微电子科技有限公司 | Three-section type lead-acid battery charging control circuit |
| CN113178926A (en) * | 2021-05-19 | 2021-07-27 | 臻懿(北京)科技有限公司 | Method and system for controlling balanced charging and discharging of communication base station |
| CN113178926B (en) * | 2021-05-19 | 2022-07-15 | 臻懿(北京)科技有限公司 | Method and system for controlling balanced charging and discharging of communication base station |
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Application publication date: 20150603 |