CN104578436A - Distributed energy storage system - Google Patents
Distributed energy storage system Download PDFInfo
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- CN104578436A CN104578436A CN201410839095.6A CN201410839095A CN104578436A CN 104578436 A CN104578436 A CN 104578436A CN 201410839095 A CN201410839095 A CN 201410839095A CN 104578436 A CN104578436 A CN 104578436A
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- battery
- storage system
- energy storage
- distributed energy
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a distributed energy storage system. The distributed energy storage system comprises an upper computer and a plurality group of battery packs, wherein battery management units which are used for acquiring the information of the corresponding battery packs and have the function of automatic balanced judgment are respectively connected to each group of battery packs, the battery management units are connected with the upper computer, and batteries positioned at different battery packs are in different grades. For the distributed energy storage system disclosed by the invention, the batteries in the same grade are arranged in the same battery pack, so that all the batteries can be sufficiently utilized, the balanced availability is guaranteed, the yield is increased, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of management method of energy-storage system, be specifically related to a kind of distributed energy storage system.
Background technology
Energy-storage system is the battery system being formed high voltage large capcity by the mode of series and parallel connections, battery, the battery management unit gathering battery information and the host computer be connected with battery management power supply is comprised in energy-storage system, the balance policy of traditional energy-storage system is defined by host computer and seeks unity of action, because battery capacity is inconsistent, voltage is inconsistent directly causes balanced inefficacy, or in order to ensure balanced validity, causing battery combo rate of finished products extremely low, improve cell cost.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of distributed energy storage method for managing system.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of distributed energy storage system, comprise host computer and some Battery pack groups, every Battery pack group is connected with the battery management unit with automatic equalization arbitration functions gathering this battery pack information, and described battery management unit is connected with host computer, and the cell grade being positioned at different battery pack is different.
Cell grade carries out classification according to battery parameter, and described battery parameter comprises the self-discharge value of battery capacity absolute value, the open-circuit voltage values of battery, the internal resistance value of battery and battery.
Carrying out classification according to battery capacity absolute value is with a battery for standard cell, and the difference of the absolute capacity values of this standard cell is a grade between iR ~ (i+1) R, and wherein i is nonnegative integer, and R is nonnegative number.
Carrying out classification according to the open-circuit voltage values of battery is with a battery for standard cell, and the difference of the open circuit voltage of this standard cell is a grade between iM ~ (i+1) M, and wherein i is nonnegative integer, and M is nonnegative number.
Carrying out classification according to the internal resistance value of battery is with a battery for standard cell, and the difference of this internal resistance of standard cells is a grade between iN ~ (i+1) N, and wherein i is nonnegative integer, and N is nonnegative number.
Carrying out classification according to the self-discharge value of battery is with a battery for standard cell, and the difference of this standard cell self discharge is a grade between iL ~ (i+1) L, and wherein i is nonnegative integer, and L is nonnegative number.
The beneficial effect that the present invention reaches: the battery of ad eundem is arranged in same battery pack by the present invention, the cell performance degradation caused is put in overcharging and crossing of causing because battery performance is different when avoiding the battery of different brackets simultaneously to use, all batteries can be made full use of, namely ensure that balanced validity, can rate of finished products be improved again, reduce costs.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of energy-storage system.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, a kind of distributed energy storage system, comprise host computer and some Battery pack groups, every Battery pack group is connected with the battery management unit with automatic equalization arbitration functions gathering this battery pack information, its balance parameters is according to electric properties of battery unit personalization definition, and battery management unit is connected with host computer.
The cell grade being positioned at different battery pack is different.Cell grade carries out classification according to battery parameter, and described battery parameter comprises the self-discharge value of battery capacity absolute value, the open-circuit voltage values of battery, the internal resistance value of battery and battery.
Classification in the present embodiment carries out classification according to a battery parameter, specific as follows:
Carrying out classification according to battery capacity absolute value is with a battery for standard cell, and the difference of the absolute capacity values of this standard cell is a grade between iR ~ (i+1) R, and wherein i is nonnegative integer, and R is nonnegative number.
Example: definition R=1%, the battery of the difference of the absolute capacity values with standard cell within 1% is set to one group, and the battery within 1% ~ 2% is set to one group, the like.
Carrying out classification according to the open-circuit voltage values of battery is with a battery for standard cell, and the difference of the open circuit voltage of this standard cell is a grade between iM ~ (i+1) M, and wherein i is nonnegative integer, and M is nonnegative number.
Example: definition M=10mV, the battery of the difference of the absolute capacity values with standard cell within 10mV is set to one group, and the battery within 10mV ~ 20mV is set to one group, the like.
Internal resistance size carries out classification and self discharge size carries out classification and above-mentioned classification is similar, carrying out classification according to the internal resistance value of battery is for standard cell with a battery, and the difference of this internal resistance of standard cells is a grade between iN ~ (i+1) N, wherein i is nonnegative integer, and N is nonnegative number.Carrying out classification according to the self-discharge value of battery is with a battery for standard cell, and the difference of this standard cell self discharge is a grade between iL ~ (i+1) L, and wherein i is nonnegative integer, and L is nonnegative number.
Can certainly carry out classification with multiple battery parameter, it is utilize the multi-parameters model of battery performance to carry out classification that multiple battery parameter carries out classification actual, namely adopts during two parameters and carries out correction matching based on multi-parameter battery model.
Cell grade in same battery pack is identical, coupled battery management unit, carries out personal management to it, becomes a complete battery module.Above-mentioned distributed energy storage system, can make full use of all batteries, namely ensure that balanced validity, can improve rate of finished products again, reduce costs.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (6)
1. a distributed energy storage system, it is characterized in that: comprise host computer and some Battery pack groups, every Battery pack group is connected with the battery management unit with automatic equalization arbitration functions gathering this battery pack information, described battery management unit is connected with host computer, and the cell grade being positioned at different battery pack is different.
2. a kind of distributed energy storage system according to claim 1, it is characterized in that: cell grade carries out classification according to battery parameter, described battery parameter comprises the self-discharge value of battery capacity absolute value, the open-circuit voltage values of battery, the internal resistance value of battery and battery.
3. a kind of distributed energy storage system according to claim 2, it is characterized in that: carrying out classification according to battery capacity absolute value is for standard cell with a battery, and the difference of the absolute capacity values of this standard cell is a grade between iR ~ (i+1) R, wherein i is nonnegative integer, and R is nonnegative number.
4. a kind of distributed energy storage system according to claim 2, it is characterized in that: carrying out classification according to the open-circuit voltage values of battery is for standard cell with a battery, and the difference of the open circuit voltage of this standard cell is a grade between iM ~ (i+1) M, wherein i is nonnegative integer, and M is nonnegative number.
5. a kind of distributed energy storage system according to claim 2, it is characterized in that: carrying out classification according to the internal resistance value of battery is for standard cell with a battery, and the difference of this internal resistance of standard cells is a grade between iN ~ (i+1) N, and wherein i is nonnegative integer, and N is nonnegative number.
6. a kind of distributed energy storage system according to claim 2, it is characterized in that: carrying out classification according to the self-discharge value of battery is for standard cell with a battery, and the difference of this standard cell self discharge is a grade between iL ~ (i+1) L, wherein i is nonnegative integer, and L is nonnegative number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839095.6A CN104578436A (en) | 2014-12-30 | 2014-12-30 | Distributed energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839095.6A CN104578436A (en) | 2014-12-30 | 2014-12-30 | Distributed energy storage system |
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| CN104578436A true CN104578436A (en) | 2015-04-29 |
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| CN201410839095.6A Pending CN104578436A (en) | 2014-12-30 | 2014-12-30 | Distributed energy storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613440A (en) * | 2019-01-17 | 2019-04-12 | 清华-伯克利深圳学院筹备办公室 | Stage division, device, equipment and the storage medium of battery |
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| CN102544606A (en) * | 2012-01-18 | 2012-07-04 | 杭州高特电子设备有限公司 | Cluster analysis based lithium battery unit matching method |
| CN202474128U (en) * | 2012-01-18 | 2012-10-03 | 杭州高特电子设备有限公司 | Cluster analysis-based battery unit grouping system |
| CN103633695A (en) * | 2013-11-22 | 2014-03-12 | 国家电网公司 | Improved lithium battery pack equalizing method and equalizing circuit thereof |
| CN203481887U (en) * | 2013-09-29 | 2014-03-12 | 国网辽宁省电力有限公司沈阳供电公司 | Lithium battery set management system |
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2014
- 2014-12-30 CN CN201410839095.6A patent/CN104578436A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544606A (en) * | 2012-01-18 | 2012-07-04 | 杭州高特电子设备有限公司 | Cluster analysis based lithium battery unit matching method |
| CN202474128U (en) * | 2012-01-18 | 2012-10-03 | 杭州高特电子设备有限公司 | Cluster analysis-based battery unit grouping system |
| CN203481887U (en) * | 2013-09-29 | 2014-03-12 | 国网辽宁省电力有限公司沈阳供电公司 | Lithium battery set management system |
| CN103633695A (en) * | 2013-11-22 | 2014-03-12 | 国家电网公司 | Improved lithium battery pack equalizing method and equalizing circuit thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613440A (en) * | 2019-01-17 | 2019-04-12 | 清华-伯克利深圳学院筹备办公室 | Stage division, device, equipment and the storage medium of battery |
| CN109613440B (en) * | 2019-01-17 | 2021-06-08 | 清华-伯克利深圳学院筹备办公室 | Battery grading method, device, equipment and storage medium |
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Application publication date: 20150429 |
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