CN111668565A - Active equalization system and method for storage battery pack - Google Patents
Active equalization system and method for storage battery pack Download PDFInfo
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- CN111668565A CN111668565A CN202010654855.1A CN202010654855A CN111668565A CN 111668565 A CN111668565 A CN 111668565A CN 202010654855 A CN202010654855 A CN 202010654855A CN 111668565 A CN111668565 A CN 111668565A
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- battery pack
- module
- storage battery
- battery
- active equalization
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/13—Maintaining the SoC within a determined range
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides an active equalization system and method of a storage battery pack, and relates to the field of battery management; the storage battery pack is formed by connecting a plurality of lithium batteries in series; the active equalization module is used for carrying out parallel balance on the single batteries and is connected to the storage battery pack; the battery monitoring module is connected to the storage battery pack; the control module is connected to the active equalization module and the battery monitoring module; the display module is connected to the control module; the indicator light is connected to the control module; the invention provides an active equalization system and method of a storage battery pack, which can not generate pressure difference among single batteries, can not cause the problems of capacity reduction, mileage reduction and the like due to battery imbalance, greatly prolongs the service life of a lithium battery, and avoids the condition of insufficient capacity caused by the imbalance problem generated after the battery is used for a period of time.
Description
Technical Field
The invention relates to the field of battery management, in particular to an active equalization system and method of a storage battery pack.
Background
With the rapid development of electric vehicles, how to solve the safety problems brought by electric vehicles becomes a new topic and difficulty in the automobile industry, and as a power energy source of electric vehicles, lithium ion batteries are mainly used at present, and the safety of the lithium ion batteries becomes the most concerned focus of the public.
The lithium ion battery has the advantages of high energy density, light weight, long service life and the like, but has a plurality of defects, firstly, charging and discharging need to be limited by a management system, otherwise, overcharge and overdischarge situations can be generated, electrochemical negative reactions in the battery can be caused, a large amount of flammable and explosive gas can be generated, swelling and irreversible loss can be caused, the most important is the battery balancing problem except that overcharge and overdischarge need to be controlled, balancing is realized, the name means that the capacity, the voltage, the internal resistance and the like of each single battery in the battery pack are always kept the same, only the battery pack can exert the maximum capacity during charging and discharging, the lithium battery can generate the situations of capacity imbalance and voltage imbalance after being used for a period of time, even if people pay attention to the capacity of each single battery during assembly, however, the problem of uneven volume of each monomer still occurs after a period of use, and the explosion and combustion of the battery can be caused in serious cases.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an active equalization system and method of a storage battery pack, which can avoid the condition of insufficient capacity caused by the unbalance problem generated after a battery is used for a period of time.
In order to achieve the purpose, the invention is realized by the following technical scheme: an active equalization system for a battery pack, comprising
The storage battery pack is formed by connecting a plurality of lithium batteries in series;
the active equalization module is used for carrying out parallel balance on the single batteries and is connected to the storage battery pack;
the battery monitoring module is used for detecting the working voltage, the charging and discharging current and the ambient temperature of the storage battery pack; the battery monitoring module is connected to the storage battery pack;
the control module is used for processing data of the active equalization system and is connected to the active equalization module and the battery monitoring module;
the display module is used for displaying detailed data of the storage battery pack and is connected to the control module;
and the indicator light is used for rapidly displaying the condition of the storage battery pack and is connected to the control module.
Further, the voltage of the lithium battery is 1-4.5 v.
Furthermore, each lithium battery is connected to two ends of the active balancing module in parallel, and at most 20-30 lithium batteries are connected in parallel to each active balancing module.
Furthermore, each lithium battery is connected to the battery monitoring module in parallel, and the battery monitoring module is used for collecting the electric quantity information of each lithium battery in the storage battery pack.
Further, the active equalization method of the storage battery pack comprises the following steps:
a) the battery monitoring module collects parameters of at least one lithium battery in the storage battery pack and generates a corresponding control signal according to the parameters;
b) the control signal is sent to a control module, and the control module carries out electric quantity management on the storage battery pack through an active balancing module;
c) the information that battery monitoring module gathered is gathered through control module, shows on display module to can know storage battery's situation rapidly through the pilot lamp.
The invention provides an active equalization system and method of a storage battery pack, which can not generate pressure difference among single batteries, can not cause the problems of capacity reduction, mileage reduction and the like due to battery imbalance, greatly prolongs the service life of a lithium battery, and avoids the condition of insufficient capacity caused by the imbalance problem generated after the battery is used for a period of time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected through the insides of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1:
as shown in FIG. 1, an active equalization system for a battery pack includes
The storage battery pack is formed by connecting a plurality of lithium batteries in series;
the active equalization module is used for carrying out parallel balance on the single batteries and is connected to the storage battery pack;
the battery monitoring module is used for detecting the working voltage, the charging and discharging current and the ambient temperature of the storage battery pack; the battery monitoring module is connected to the storage battery pack;
the control module is used for processing data of the active equalization system and is connected to the active equalization module and the battery monitoring module;
the display module is used for displaying detailed data of the storage battery pack and is connected to the control module;
and the indicator light is used for rapidly displaying the condition of the storage battery pack and is connected to the control module.
Example 2:
an active equalization system for a battery pack, comprising
The storage battery pack is formed by connecting a plurality of lithium batteries in series;
the active equalization module is used for carrying out parallel balance on the single batteries and is connected to the storage battery pack;
the battery monitoring module is used for detecting the working voltage, the charging and discharging current and the ambient temperature of the storage battery pack; the battery monitoring module is connected to the storage battery pack;
the control module is used for processing data of the active equalization system and is connected to the active equalization module and the battery monitoring module;
the display module is used for displaying detailed data of the storage battery pack and is connected to the control module;
and the indicator light is used for rapidly displaying the condition of the storage battery pack and is connected to the control module.
Further, the voltage of the lithium battery is 1-4.5 v.
Furthermore, each lithium battery is connected to two ends of the active balancing module in parallel, and at most 20-30 lithium batteries are connected in parallel to each active balancing module.
Furthermore, each lithium battery is connected to the battery monitoring module in parallel, and the battery monitoring module is used for collecting the electric quantity information of each lithium battery in the storage battery pack.
Example 3:
an active equalization system for a battery pack, comprising
The storage battery pack is formed by connecting a plurality of lithium batteries in series;
the active equalization module is used for carrying out parallel balance on the single batteries and is connected to the storage battery pack;
the battery monitoring module is used for detecting the working voltage, the charging and discharging current and the ambient temperature of the storage battery pack; the battery monitoring module is connected to the storage battery pack;
the control module is used for processing data of the active equalization system and is connected to the active equalization module and the battery monitoring module;
the display module is used for displaying detailed data of the storage battery pack and is connected to the control module;
and the indicator light is used for rapidly displaying the condition of the storage battery pack and is connected to the control module.
Further, the voltage of the lithium battery is 1-4.5 v.
Furthermore, each lithium battery is connected to two ends of the active balancing module in parallel, and at most 20-30 lithium batteries are connected in parallel to each active balancing module.
Furthermore, each lithium battery is connected to the battery monitoring module in parallel, and the battery monitoring module is used for collecting the electric quantity information of each lithium battery in the storage battery pack.
Further, the active equalization method of the storage battery pack comprises the following steps:
a) the battery monitoring module collects parameters of at least one lithium battery in the storage battery pack and generates a corresponding control signal according to the parameters;
b) the control signal is sent to a control module, and the control module carries out electric quantity management on the storage battery pack through an active balancing module;
c) the information that battery monitoring module gathered is gathered through control module, shows on display module to can know storage battery's situation rapidly through the pilot lamp.
The invention provides an active equalization system and method of a storage battery pack, which can not generate pressure difference among single batteries, can not cause the problems of capacity reduction, mileage reduction and the like due to battery imbalance, greatly prolongs the service life of a lithium battery, and avoids the condition of insufficient capacity caused by the imbalance problem generated after the battery is used for a period of time.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. An active equalization system for a battery pack, comprising
The storage battery pack is formed by connecting a plurality of lithium batteries in series;
the active equalization module is used for carrying out parallel balance on the single batteries and is connected to the storage battery pack;
the battery monitoring module is used for detecting the working voltage, the charging and discharging current and the ambient temperature of the storage battery pack; the battery monitoring module is connected to the storage battery pack;
the control module is used for processing data of the active equalization system and is connected to the active equalization module and the battery monitoring module;
the display module is used for displaying detailed data of the storage battery pack and is connected to the control module;
and the indicator light is used for rapidly displaying the condition of the storage battery pack and is connected to the control module.
2. The active equalization system for a battery pack of claim 1, wherein the voltage of the lithium battery is 1-4.5 v.
3. The active balancing system of battery packs according to claim 1, wherein each of the lithium batteries is connected in parallel to both ends of the active balancing module, and wherein each of the active balancing modules is connected in parallel with at most 20-30 lithium batteries.
4. The active equalization system of battery pack according to claim 1, wherein each lithium battery is connected in parallel to a battery monitoring module, and the battery monitoring module is configured to collect information about the charge of each lithium battery in the battery pack.
5. The active equalization method for a battery pack according to claim 1, characterized by comprising the steps of:
a) the battery monitoring module collects parameters of at least one lithium battery in the storage battery pack and generates a corresponding control signal according to the parameters;
b) the control signal is sent to a control module, and the control module carries out electric quantity management on the storage battery pack through an active balancing module;
c) the information that battery monitoring module gathered is gathered through control module, shows on display module to can know storage battery's situation rapidly through the pilot lamp.
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CN202010654855.1A CN111668565A (en) | 2020-07-09 | 2020-07-09 | Active equalization system and method for storage battery pack |
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CN202010654855.1A CN111668565A (en) | 2020-07-09 | 2020-07-09 | Active equalization system and method for storage battery pack |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11870288B1 (en) | 2021-05-19 | 2024-01-09 | Francois Renaud-Byrne | Intelligent battery system and method of operation |
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CN108275017A (en) * | 2018-01-19 | 2018-07-13 | 合肥国轩高科动力能源有限公司 | A kind of power battery pack active equalization system and control method |
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CN104659885A (en) * | 2015-03-23 | 2015-05-27 | 阳光电源股份有限公司 | Storage battery balance system and balance control method |
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