CN107634276A - The active equalization module of lithium battery - Google Patents
The active equalization module of lithium battery Download PDFInfo
- Publication number
- CN107634276A CN107634276A CN201710861756.9A CN201710861756A CN107634276A CN 107634276 A CN107634276 A CN 107634276A CN 201710861756 A CN201710861756 A CN 201710861756A CN 107634276 A CN107634276 A CN 107634276A
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- China
- Prior art keywords
- lithium battery
- battery
- active equalization
- equalization module
- module
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides the active equalization module of lithium battery, is related to field of lithium, including lithium battery, active equalization module, battery management module, load；The lithium battery quantity is multiple, and is connected in series to form lithium battery group between lithium battery from beginning to end；Each lithium battery is parallel in active equalization module；The positive pole of the lithium battery group is sequentially connected in series battery management module, loaded and is connected to the negative pole of the lithium battery group；The present invention will not make to produce pressure difference between cell, because of battery is unbalanced capacity will not be caused to decline, the problems such as course continuation mileage declines, greatly prolong the service life of lithium battery, battery is avoided to use caused unbalanced problem after a period of time, cause the situation that capacity is inadequate, lithium battery can more series connection in groups, small volume, it is in light weight, monomer maximum euqalizing current is 3A, is independent balance module, any conflict will not occur with the BMS battery management modules system of routine.
Description
Technical field
The present invention relates to field of lithium, and in particular to the active equalization module of lithium battery.
Background technology
With the fast development of electric automobile, how to solve safety problem caused by electric automobile, turn into automobile industry
New topic and difficult point, as electric automobile power source be presently mainly based on lithium ion battery, with regard to its security into
For public's focus of attention the most.
The advantages of lithium ion battery be energy density height, it is in light weight, service life is long the features such as, but it there is also very
More shortcomings, it is that discharge and recharge limits it with management system first, otherwise will produces the situation for overcharging and crossing and put, cause battery
Internal electrochemistry negatively reaction, the substantial amounts of flammable explosive gas of output, causes bulge and irreversible loss, except super-charge super-discharge
Need control outer, it is most important that battery balanced problem, it is balanced, as the term suggests just refer to each monomer electricity in battery pack
Tankage, voltage, internal resistance etc. will keep the same all the time, only in this way battery pack maximum appearance of competence exertion when discharge and recharge
Amount, lithium battery occur that capacity is unbalanced, the unbalanced situation of voltage in use for some time, though we assembling when
Wait holding the very accurate of each cell partial volume, but using still occurring each monomer after a period of time painstakingly
The problem of amount height is uneven, can cause battery explosion and burning when serious, the lithium battery factory that China has 95% at present uses all
It is passive balanced BMS management systems to solve this problem, its practical passive equilibrium solves equalization problem, simply cup waterwheel
Firewood, can not solve the equalization problem of battery at all, lithium battery group in use, once have a monomer battery voltage inclined
Low, the battery of BMS system detectios to low-voltage, BMS systems will be used as capacity parameter to calculate with this minimum battery
Standard of closure, otherwise this cell will overcharge and cross and put, cause bulge in addition explode danger.
The content of the invention
In view of the shortcomings of the prior art, the invention provides the active equalization module of lithium battery, battery is avoided to use one section
Caused unbalanced problem, causes the situation that capacity is inadequate after time.
To realize object above, the present invention is achieved by the following technical programs：The active equalization module of lithium battery, bag
Include lithium battery, active equalization module, battery management module, load；The lithium battery quantity is multiple, and between lithium battery from beginning to end
It is connected in series to form lithium battery group；Each lithium battery is parallel in active equalization module；The positive pole of the lithium battery group
Battery management module is sequentially connected in series, is loaded and is connected to the negative pole of the lithium battery group.
Preferably, when voltage phase difference 20mv between certain described two single lithium battery, active equalization will open
It is dynamic, the electric current of the high-tension lithium battery of monomer is shifted to the lithium battery of low-voltage.
Preferably, lithium electricity of the high-tension lithium battery of monomer in the lithium battery group with maximum 3A electric current to low-voltage
Shift in pond.
Preferably, the capacity specifications of the lithium battery are consistent.
Preferably, one active equalization module 24 lithium batteries at most in parallel.
The invention provides the active equalization module of lithium battery, will not make to produce pressure difference between cell, will not be because of
The problems such as battery is unbalanced to cause capacity to decline, and course continuation mileage declines, greatly prolongs the service life of lithium battery, avoids battery from making
With caused unbalanced problem after a period of time, cause the situation that capacity is inadequate, lithium battery can more series connection in groups, small volume,
In light weight, monomer maximum euqalizing current is 3A, is independent balance module, will not be with the BMS battery management module systems of routine
Any conflict of generation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the principle schematic of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment 1：
As shown in figure 1, the active equalization module of lithium battery, including lithium battery, active equalization module, battery management module,
Load；The lithium battery quantity is multiple, and is connected in series to form lithium battery group between lithium battery from beginning to end；Each lithium battery
It is parallel in active equalization module；The positive pole of the lithium battery group is sequentially connected in series battery management module, loaded and is connected to institute
State the negative pole of lithium battery group.
Preferably, when voltage phase difference 20mv between certain described two single lithium battery, active equalization will open
It is dynamic, the electric current of the high-tension lithium battery of monomer is shifted to the lithium battery of low-voltage.
Embodiment 2：
The active equalization module of lithium battery, including lithium battery, active equalization module, battery management module, load；The lithium
Number of batteries is multiple, and is connected in series to form lithium battery group between lithium battery from beginning to end；Each lithium battery is parallel to master
On dynamic balance module；The positive pole of the lithium battery group is sequentially connected in series battery management module, loaded and is connected to the lithium battery group
Negative pole.
Preferably, when voltage phase difference 20mv between certain described two single lithium battery, active equalization will open
It is dynamic, the electric current of the high-tension lithium battery of monomer is shifted to the lithium battery of low-voltage.
Preferably, lithium electricity of the high-tension lithium battery of monomer in the lithium battery group with maximum 3A electric current to low-voltage
Shift in pond.
Preferably, the capacity specifications of the lithium battery are consistent.
Preferably, one active equalization module 24 lithium batteries at most in parallel.
Experiment
The active equalization module of the lithium battery of embodiment 1,2 is tested, and entered with the common active equalization module in market
Row contrast.
Lithium battery capacity is detected as detection using the lithium battery capacity of 1 year with being compared before being not used.
Result of the test is as follows：
Experiment proves：The invention provides the active equalization module of lithium battery, will not make to produce pressure difference between cell,
Because of battery is unbalanced capacity will not be caused to decline, course continuation mileage decline the problems such as, greatly prolong the service life of lithium battery, keep away
Exempt from battery using caused unbalanced problem after a period of time, cause the situation that capacity is inadequate, lithium battery can more series connection in groups,
Small volume, in light weight, monomer maximum euqalizing current is 3A, is independent balance module, will not be with the BMS battery management moulds of routine
Any conflict occurs for block system.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. the active equalization module of lithium battery, it is characterised in that including lithium battery, active equalization module, battery management module, negative
Carry；The lithium battery quantity is multiple, and is connected in series to form lithium battery group between lithium battery from beginning to end；Each lithium battery is equal
It is parallel in active equalization module；The positive pole of the lithium battery group is sequentially connected in series battery management module, loaded and is connected to described
The negative pole of lithium battery group.
2. the active equalization module of lithium battery as claimed in claim 1, it is characterised in that certain described two single lithium battery
Between voltage phase difference 20mv when, active equalization will start, by the electric current of the high-tension lithium battery of monomer to low-voltage
Lithium battery transfer.
3. the active equalization module of lithium battery as claimed in claim 2, it is characterised in that the monomer in the lithium battery group is high
The lithium battery of voltage is shifted with maximum 3A electric current to the lithium battery of low-voltage.
4. the active equalization module of lithium battery as claimed in claim 1, it is characterised in that the capacity rule of the lithium battery
Lattice are consistent.
5. the active equalization module of lithium battery as claimed in claim 1, it is characterised in that one active equalization module is most
24 lithium batteries of multi-parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861756.9A CN107634276A (en) | 2017-09-21 | 2017-09-21 | The active equalization module of lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861756.9A CN107634276A (en) | 2017-09-21 | 2017-09-21 | The active equalization module of lithium battery |
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| CN107634276A true CN107634276A (en) | 2018-01-26 |
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| CN201710861756.9A Pending CN107634276A (en) | 2017-09-21 | 2017-09-21 | The active equalization module of lithium battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588437A (en) * | 2018-06-12 | 2019-12-20 | 三星Sdi株式会社 | Voltage equalizing device |
| CN111668565A (en) * | 2020-07-09 | 2020-09-15 | 上海百杉智能科技有限公司 | Active equalization system and method for storage battery pack |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205544439U (en) * | 2016-03-21 | 2016-08-31 | 南京金龙新能源汽车研究院有限公司 | Battery management system with balanced function of initiative |
-
2017
- 2017-09-21 CN CN201710861756.9A patent/CN107634276A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205544439U (en) * | 2016-03-21 | 2016-08-31 | 南京金龙新能源汽车研究院有限公司 | Battery management system with balanced function of initiative |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588437A (en) * | 2018-06-12 | 2019-12-20 | 三星Sdi株式会社 | Voltage equalizing device |
| CN110588437B (en) * | 2018-06-12 | 2022-10-25 | 三星Sdi株式会社 | Voltage equalizing device |
| CN111668565A (en) * | 2020-07-09 | 2020-09-15 | 上海百杉智能科技有限公司 | Active equalization system and method for storage battery pack |
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