CN1567645A - Method and system for equalized charging of battery unit - Google Patents
Method and system for equalized charging of battery unit Download PDFInfo
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- CN1567645A CN1567645A CNA031387187A CN03138718A CN1567645A CN 1567645 A CN1567645 A CN 1567645A CN A031387187 A CNA031387187 A CN A031387187A CN 03138718 A CN03138718 A CN 03138718A CN 1567645 A CN1567645 A CN 1567645A
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- battery pack
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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 a method and charging system of charging serial battery group, using the character that output-level rectifier diode of a switching power supply isolates reversely, connecting at least two switching power charge modules which have different maximum output voltages in parallel with two ends of the serial battery group, separating the charging course into at least two voltage-progressively increasing and current-progressively decreasing stages; as the voltage of the battery group reaches the appointed value, only one charging module charges the battery group by a harmless 0.1C-0.015C current of the capacity of the battery group; it makes balanced harmless charge on the large-acceptance-ratio battery and small-acceptance-ratio battery in the battery group. The charging course needs no artificial regulation, convenient to operate and able to effectively prolong the service life of the battery group and reduce the pollution of discarded battery group to the environment. The charging system adopts a modulization organizational structure and has good extensibility and is easy to regulate according to concrete conditions. It can reduce the use expenses for a user.
Description
Affiliated technical field
The present invention relates to a kind of to battery charge method and adopt the charging system of this method, especially to the method for the batteries charging that is connected in series and adopt the charging system of this method.
Background technology
For improving the efficient of the batteries charging that series connection uses, keep the being connected in series relation of battery pack during charging usually, charge to battery pack is unified with constant voltage, current constant mode by a cover charging system.Because the limitation of manufacturing technology, each battery cell charge characteristic there are differences, under identical charging voltage and current condition, and " accepting ratio " difference of each battery cell charging.In the practical operation, at the after-stage of each battery cell charging process, the part battery cell has been full of electricity, and the part battery cell is the underfill electricity still, needs to continue charging.The battery cell that has been full of electricity continues with the same current charges liquid temp fast rise that can produce electrolysis, formation " electrolysis " " gasification " phenomenon, to such an extent as to one or several battery is undermined in the battery pack, even the problem of scrapping.But flow through the battery cell that be full of electricity with less current this moment, then can not produce the problems referred to above, and can continue the battery cell charging to the underfill electricity, realizes the battery pack balancing charging.The charging system that some that develop can equalizing charge, with constant voltage, current constant mode battery pack is increased device that detects and extra current is provided of connection to each battery cell in the unified charging system that charges, and utilizing a controller to control the work of this device of each battery cell connection.For example, the disclosed patent No. of Chinese invention patent specification CN 1080017C is: ZL96197999.2, the technical scheme of " system that is used for equalizing level of charge in batteries " by name.It proposes in the batteries that forms that is connected in series, and each single battery or accumulator cell assembly are used a controllable voltage converter; This controllable voltage converter one side connects this single battery or accumulator cell assembly, and opposite side connects the public current circuit that extra current is provided; The positive pole of this current circuit connects the positive pole of batteries, and negative pole connects the negative pole of batteries; The controllable voltage converter is equipped with and detects single battery or the temperature of accumulator cell assembly and the device of electrode voltage; Establishing central control unit in the system communicates by letter with each controllable voltage converter and controls.Utilize the controllable voltage converter when single battery that it connected or accumulator cell assembly underfill electricity, to provide extra current, satisfy the charging needs to it.This charging modes, use a central control unit, public current circuit that extra current is provided, a plurality of controllable voltage converter, particularly a plurality of controllable voltage converters not only will be connected with single battery or accumulator cell assembly, also to be connected and communicate and be subjected to it to control, the system configuration complexity with central control unit.
Summary of the invention
The present invention aims to provide the better simply circuit structure of a kind of employing, just can be at the after-stage of batteries charging process, automatically use less current instead to batteries charging, realize equalizing charge, to the method for battery pack balancing charging and adopt the system to the battery pack balancing charging of this method.
The objective of the invention is to realize: to the method for battery pack balancing charging by following scheme, it is characterized in that: at least two Switching Power Supply charge power supplies of the two ends of the battery pack that is connected in series parallel connection module, wherein the maximum output current amount of first charge power supply module is the harmless electric current of this batteries charging; When beginning to charge, each charge power supply module is jointly to this batteries charging; When this battery voltage reaches designated value, has only first charge power supply module to this batteries charging; When this battery voltage reaches rated value, to this battery pack floating charge.
Described harmless electric current is the 0.1C～0.015C of this battery capacity.
Described designated value is the gassing voltage of this battery pack, and described rated value is the maximum charging voltage of this battery pack.
This method is invented another kind of implementing method: at least three Switching Power Supply charge power supplies of two ends parallel connection module of described battery pack, and wherein the maximum output current amount of first charge power supply module is the harmless electric current of this batteries charging; When beginning to charge, each charge power supply module is jointly to this batteries charging; When this battery voltage reaches a certain predetermined value that is lower than designated value, only by second charge power supply module and first charge power supply module to this batteries charging; When this battery voltage reaches designated value, has only first charge power supply module to this batteries charging; When this battery voltage reaches rated value, to this battery pack floating charge.
System to battery pack balancing charging is characterized in that: at least two Switching Power Supply charge power supplies of the two ends parallel connection module of the battery pack that forms that is connected in series; Each charge power supply module is set independently maximum output current and maximum output voltage separately, and the summation of each charge power supply module maximum output current is less than the maximum current of this batteries charging; Wherein the maximum output current of first charge power supply module is the harmless electric current of this batteries charging, and maximum output voltage is this batteries charging voltage rating; All the other each charge power supply module maximum output voltages are less than or equal to this batteries charging voltage designated value.
In this system: described harmless electric current is the 0.1C～0.015C of this battery capacity.Described designated value is the gassing voltage of this battery pack, and described rated value is the maximum charging voltage of this battery pack.
The another kind of system implementation structure to the battery pack balancing charging of this method invention is: at least three Switching Power Supply charge power supplies of two ends parallel connection module of described battery pack; Each charge power supply module is set independently maximum output current and maximum output voltage separately, and the summation of each charge power supply module maximum output current is less than the maximum current of this batteries charging; Wherein the maximum output current of first charge power supply module is the harmless electric current of this batteries charging, and maximum output voltage is this batteries charging voltage rating; Wherein the maximum output voltage of second charge power supply module is this batteries charging voltage designated value; All the other each charge power supply module maximum output voltages are a certain predetermined value that is lower than designated value.
The practice of recommending is: described each charge power supply module comprises testing circuit, rectification circuit, dc switch inverter circuit and switching pulse modulation generator; Rectification circuit provides working power for the dc switch inverter circuit; Testing circuit detects the electrode voltage of battery pack, and the deviation signal of the electrode voltage and the setting voltage of battery pack is provided to the switching pulse modulation generator; The switching pulse modulation generator provides the switching pulse of its output current of control and voltage for the dc switch inverter circuit.
Particularly: described each charge power supply module also has adjustable output current initialization circuit and output voltage initialization circuit.
The present invention is to the method for battery pack balancing charging, utilize the characteristics of Switching Power Supply output stage rectifier diode reverse isolation, the Switching Power Supply charge power supply module that has different maximum output voltages at least two of the two ends of the battery pack that is connected in series parallel connections, the preliminary stage of charging, each charge power supply module is jointly to this batteries charging; When this battery voltage reaches designated value, have only a charge power supply module with the harmless electric current of the 0.1C～0.015C of this battery capacity to this batteries charging; " accepting than big " and " accepting than little " equilibrium is full of harmlessly.Charging process need not manual adjustment, is convenient to operation, can effectively prolong the useful life of battery pack, reduces waste battery group pollution on the environment.Use a plurality of different maximum output voltage Switching Power Supply charge power supply modules that have, make charging process be divided into a plurality of voltages and increase progressively, in the stage that electric current successively decreases, not only battery pack can balanced be full of electricity harmlessly, and charging rate is accelerated.Adopt the system to the battery pack balancing charging of said method, adopt modular institutional framework, system expansibility is good, is easy to adjust as the case may be.Can reduce user's cost of use.Each charge power supply module has rectification circuit to provide working power for the dc switch inverter circuit; Testing circuit detects the electrode voltage of battery pack, and the deviation signal of the electrode voltage and the setting voltage of battery pack is provided to the switching pulse modulation generator; The switching pulse modulation generator provides the switching pulse of its output current of control and voltage for the dc switch inverter circuit.Charge power supply module itself can independently be finished the basic function of charging, need not to dispose other device, is convenient to produce and maintenance, helps seriation and applies.Particularly: each charge power supply module also has adjustable output current initialization circuit and output voltage initialization circuit.The charge power supply module of each specification can be used according to concrete application conditions adjustment, and is applied widely.
Description of drawings
Fig. 1 is the structural representation of the present invention to an embodiment of system of battery pack balancing charging.
Fig. 2 is the structural representation of the present invention to another embodiment of system of battery pack balancing charging.
Fig. 3 is the frame structure schematic diagram to a preferred embodiment of Switching Power Supply charge power supply module in the system of battery pack balancing charging.
Embodiment
The present invention to an embodiment of the system of battery pack balancing charging be one to the large combustion machine more than 1000 horsepowers, as the system of the startup batteries charging of beeliner, its structure sees also Fig. 1.This startup battery pack is the battery pack 1 that is connected in series and is formed by the storage battery that 48 monomer voltages are 2V.The capacity of battery pack 1 is 460Ah, and the maximum current of charging is 60A, and the maximum charging voltage of charging is 124.8V, and gassing voltage is 116V.The two ends of battery pack 1 two Switching Power Supply charge power supply modules 2,3 in parallel.According to the characteristic of battery pack 1, set two charge power supply modules 2,3 maximum output current I independently separately
2, I
3With maximum output voltage V
2, V
3, wherein: the maximum output current I of first charge power supply module 2
2Be 460Ah * 0.05C=23A, promptly through the harmless electric current of inventor's test cell group 1 charging, maximum output voltage V
2Be battery pack 1 charging voltage rated value 124.8V; Second charge power supply module 3 maximum output voltage V
3Equal the gassing voltage 116V of this battery pack 1, maximum output current I
3Can be by the summation (I of two charge power supply modules, 2,3 maximum output currents
2+ I
3) determine less than the principle of maximum current 60 A of this battery pack 1 charging, make I
3Be chosen to be 35A.
After diesel locomotive enters the storehouse, it is started battery pack 1 be connected with this system, this system begins charging, and two charge power supply modules 2,3 are jointly to this battery pack 1 charging; When this battery pack 1 voltage reaches 116V, because second charge power supply module 3 maximum output voltage are no longer greater than the electrode voltage of this battery pack 1, so no longer to its discharge, promptly do not have electric current output, have only first charge power supply module 2 this battery pack 1 to be charged with maximum output current 23A; When this battery voltage 1 reaches the 124.8V value, 2 pairs of these battery pack 1 floating charges of first charge power supply module.Thereby realize each monomer in 48 storage batterys that start battery pack 1 " is accepted than big " and " accepting than little " balanced harmless being full of.
Before diesel locomotive starts, will be to machine oil, diesel oil, air heat, the voltage that starts battery pack 1 descends, when dropping to 116V when following, two charge power supply modules 2,3 all enter total power output services state, and for diesel locomotive provides power supply, the electric weight foot is very strong during startup, diesel locomotive will start battery pack 1 and separate with this system after starting.Adopt this using method highly beneficial to the diesel locomotive cold-starting, the life-span that starts battery pack 1 prolongs 1-2 doubly.
This method invention is a system to the charging of communication apparatus backup battery group to another embodiment of system of battery pack balancing charging, and its structure sees also Fig. 2.This backup battery group is to be that two series connection of storage battery of 12V are one group by every monomer voltage, again by 5 groups of battery pack 1 that are connected in parallel and form.The capacity of battery pack 1 is 195Ah, and the maximum current of charging is 40A, and the maximum charging voltage of charging is 31.2V, and gassing voltage is 28.8V.The two ends of battery pack 1 three charge power supply modules 2,3,4 in parallel.The maximum output current I of first charge power supply module 2 wherein
2Be 195Ah * 0.015C=2.9A, i.e. the harmless electric current of this battery pack 1 charging, maximum output voltage V
2Maximum charging voltage 31.2V for this battery pack 1 charging; The maximum output voltage V of second charge power supply module 3
3Be the gassing magnitude of voltage 28.8V of this battery pack 1 charging, maximum output current I
3Be 15A; The 3rd charge power supply module 4 maximum output voltage V
4Be 26V, maximum output current I
4Be 20A.
When beginning to charge in this system, three charge power supply modules 2,3,4 are jointly to this battery pack 1 charging; When this battery pack 1 voltage reaches predetermined value 26V, only by second charge power supply module 3 and 1 charging of 2 pairs of these battery pack of first charge power supply module; When this battery pack 1 voltage reaches designated value 28.8V, has only 1 charging of 2 pairs of these battery pack of first charge power supply module; When this battery voltage 1 reaches rated value 31.2V, 2 pairs of these battery pack 1 floating charges of first charge power supply module.
Among above-mentioned two embodiment, the quantity of charge power supply module is not limited in two and three, according to the capacity of battery pack and the Power Limitation of each charge power supply module, first charge power supply module 2, second charge power supply module 3 and the 3rd charge power supply module 4 itself can compose in parallel with the charge power supply module with identical parameters.In addition, a plurality of predetermined values also can be set and use corresponding charge power supply module, make charging process not only safe but also quick.This charging method and system also are applicable to the battery pack of other types such as lithium battery, Ni-Cr battery, and just gassing voltage will use corresponding title by concrete battery types.
The frame structure of the preferred embodiment of a recommendation of constant current switch power source charges power module is please referring to Fig. 3 in the system of battery pack balancing charging of the present invention.Each charge power supply module comprises rectification circuit 5, dc switch inverter circuit 6, switching pulse modulation generator 7, testing circuit 8, output current initialization circuit 9, output voltage initialization circuit 10.The input of rectification circuit 5 connects civil power, and output connects dc switch inverter circuit 6, and it provides working power for dc switch inverter circuit 6.The input of testing circuit 8 connects two electrodes of battery pack 1, and output connects switching pulse modulation generator 7; Its effect is the electrode voltage that detects battery pack 1, and the deviation signal of the electrode voltage and the setting voltage of battery pack 1 is provided to switching pulse modulation generator 7.The output of adjustable output current initialization circuit 9 and output voltage initialization circuit 10 is connected respectively to switching pulse modulation generator 7.Switching pulse modulation generator 7 outputs connect dc switch inverter circuit 6, and it provides the switching pulse of its output current of control and voltage for dc switch inverter circuit 6.Dc switch inverter circuit 6 outputs connect the electrode of battery pack 1, and it provides charging voltage and electric current to battery pack 1.
Claims (10)
1. to the method for battery pack balancing charging, it is characterized in that: at least two Switching Power Supply charge power supplies of the two ends of the battery pack that is connected in series parallel connection module, wherein the maximum output current amount of first charge power supply module is the harmless electric current of this batteries charging; When beginning to charge, each charge power supply module is jointly to this batteries charging; When this battery voltage reaches designated value, has only first charge power supply module to this batteries charging; When this battery voltage reaches rated value, to this battery pack floating charge.
2. the method to the battery pack balancing charging according to claim 1 is characterized in that: described harmless electric current is the 0.1C～0.015C of this battery capacity.
3. the method to the battery pack balancing charging according to claim 2 is characterized in that: described designated value is the gassing voltage of this battery pack, and described rated value is the maximum charging voltage of this battery pack.
4. according to claim 1 or 2 or 3 described methods, it is characterized in that: at least three Switching Power Supply charge power supplies of two ends parallel connection module of described battery pack the battery pack balancing charging; When beginning to charge, each charge power supply module is jointly to this batteries charging; When this battery voltage reaches a certain predetermined value that is lower than designated value, only by second charge power supply module and first charge power supply module to this batteries charging; When this battery voltage reaches designated value, has only first charge power supply module to this batteries charging; When this battery voltage reaches rated value, to this battery pack floating charge.
5. to the system of battery pack balancing charging, it is characterized in that: at least two Switching Power Supply charge power supplies of the two ends parallel connection module of the battery pack that forms that is connected in series; Each charge power supply module is set independently maximum output current and maximum output voltage separately, and the summation of each charge power supply module maximum output current is less than the maximum current of this batteries charging; Wherein the maximum output current of first charge power supply module is the harmless electric current of this batteries charging, and maximum output voltage is this batteries charging voltage rating; All the other each charge power supply module maximum output voltages are less than or equal to this batteries charging voltage designated value.
6. the system to the battery pack balancing charging according to claim 5 is characterized in that: described harmless electric current is the 0.1C～0.015C of this battery capacity.
7. the system to the battery pack balancing charging according to claim 6 is characterized in that: described designated value is the gassing voltage of this battery pack, and described rated value is the maximum charging voltage of this battery pack.
8. according to claim 5 or 6 or 7 described systems, it is characterized in that: at least three Switching Power Supply charge power supplies of two ends parallel connection module of described battery pack the battery pack balancing charging; Wherein the maximum output voltage of second charge power supply module is this batteries charging voltage designated value; All the other each charge power supply module maximum output voltages are a certain predetermined value that is lower than designated value.
9. the system to the battery pack balancing charging according to claim 8, it is characterized in that: described each charge power supply module comprises testing circuit, rectification circuit, dc switch inverter circuit and switching pulse modulation generator; Rectification circuit provides working power for the dc switch inverter circuit; Testing circuit detects the electrode voltage of battery pack, and the deviation signal of the electrode voltage and the setting voltage of battery pack is provided to the switching pulse modulation generator; The switching pulse modulation generator provides the switching pulse of its output current of control and voltage for the dc switch inverter circuit.
10. the system to the battery pack balancing charging according to claim 9, it is characterized in that: described each charge power supply module also has adjustable output current initialization circuit and output voltage initialization circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031387187A CN1567645A (en) | 2003-06-25 | 2003-06-25 | Method and system for equalized charging of battery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031387187A CN1567645A (en) | 2003-06-25 | 2003-06-25 | Method and system for equalized charging of battery unit |
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| CN1567645A true CN1567645A (en) | 2005-01-19 |
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| CNA031387187A Pending CN1567645A (en) | 2003-06-25 | 2003-06-25 | Method and system for equalized charging of battery unit |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807729A (en) * | 2010-03-31 | 2010-08-18 | 张家港睿能科技有限公司 | Power lithium battery and charging method of balance stage of series-connected group thereof |
| CN101312296B (en) * | 2007-05-23 | 2010-12-22 | 仁宝电脑工业股份有限公司 | Charging method of battery module |
| CN102340040A (en) * | 2011-10-27 | 2012-02-01 | 山东圣阳电源股份有限公司 | High-power modular lead-acid battery formation charging/discharging system |
| CN101056001B (en) * | 2006-04-14 | 2012-02-29 | 日产自动车株式会社 | Capacity adjustment apparatus and method of secondary battery |
| CN103884988A (en) * | 2012-12-21 | 2014-06-25 | 比亚迪股份有限公司 | Battery pack fault detection device and detection method |
| CN106953128A (en) * | 2017-04-27 | 2017-07-14 | 江苏聚合新能源科技有限公司 | A kind of natural self adaptation charging method of dynamic |
| CN107533111A (en) * | 2015-04-28 | 2018-01-02 | 高通股份有限公司 | The battery meter of current information is shared between multiple battery chargers |
| US11114878B2 (en) | 2018-03-26 | 2021-09-07 | Milwaukee Electric Tool Corporation | High-power battery-powered portable power source |
| USD933010S1 (en) | 2019-05-29 | 2021-10-12 | Milwaukee Electric Tool Corporation | Portable power source |
| US11271415B2 (en) | 2018-05-18 | 2022-03-08 | Milwaukee Electric Tool Corporation | Portable power source |
-
2003
- 2003-06-25 CN CNA031387187A patent/CN1567645A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101056001B (en) * | 2006-04-14 | 2012-02-29 | 日产自动车株式会社 | Capacity adjustment apparatus and method of secondary battery |
| CN101312296B (en) * | 2007-05-23 | 2010-12-22 | 仁宝电脑工业股份有限公司 | Charging method of battery module |
| CN101807729B (en) * | 2010-03-31 | 2012-11-14 | 张家港睿能科技有限公司 | Power lithium battery and charging method of balance stage of series-connected group thereof |
| CN101807729A (en) * | 2010-03-31 | 2010-08-18 | 张家港睿能科技有限公司 | Power lithium battery and charging method of balance stage of series-connected group thereof |
| CN102340040A (en) * | 2011-10-27 | 2012-02-01 | 山东圣阳电源股份有限公司 | High-power modular lead-acid battery formation charging/discharging system |
| US9835688B2 (en) | 2012-12-21 | 2017-12-05 | Byd Company Limited | Battery-pack fault detecting device and method for detecting fault of battery-pack |
| CN103884988A (en) * | 2012-12-21 | 2014-06-25 | 比亚迪股份有限公司 | Battery pack fault detection device and detection method |
| CN107533111A (en) * | 2015-04-28 | 2018-01-02 | 高通股份有限公司 | The battery meter of current information is shared between multiple battery chargers |
| CN106953128A (en) * | 2017-04-27 | 2017-07-14 | 江苏聚合新能源科技有限公司 | A kind of natural self adaptation charging method of dynamic |
| CN106953128B (en) * | 2017-04-27 | 2019-07-12 | 江苏聚合新能源科技有限公司 | A kind of naturally adaptive charging method of dynamic |
| US11114878B2 (en) | 2018-03-26 | 2021-09-07 | Milwaukee Electric Tool Corporation | High-power battery-powered portable power source |
| US11996526B2 (en) | 2018-03-26 | 2024-05-28 | Milwaukee Electric Tool Corporation | High-power battery-powered portable power source |
| US11271415B2 (en) | 2018-05-18 | 2022-03-08 | Milwaukee Electric Tool Corporation | Portable power source |
| US11742771B2 (en) | 2018-05-18 | 2023-08-29 | Milwaukee Electric Tool Corporation | Portable power source |
| USD933010S1 (en) | 2019-05-29 | 2021-10-12 | Milwaukee Electric Tool Corporation | Portable power source |
| USD955334S1 (en) | 2019-05-29 | 2022-06-21 | Milwaukee Electric Tool Corporation | Portable power source |
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