CN104993549A - Storage battery series electrical discharge managing system and discharge control method - Google Patents
Storage battery series electrical discharge managing system and discharge control method Download PDFInfo
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- CN104993549A CN104993549A CN201510454629.8A CN201510454629A CN104993549A CN 104993549 A CN104993549 A CN 104993549A CN 201510454629 A CN201510454629 A CN 201510454629A CN 104993549 A CN104993549 A CN 104993549A
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- cell batteries
- switch
- storage battery
- batteries
- excision
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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)
Abstract
The invention discloses a storage battery series electrical discharge managing system and a discharge control method. The system comprises a serial bus, a computer, battery cells, battery cell detecting points, battery cell fling switches and battery cell cut switches. Compared with the prior art, the system controls the discharge stop time of each storage cell respectively according to the voltage differences among storage cells in a storage battery pack and thoroughly prevents the problem that certain battery cells suffer over-discharge. The service lifetime of the storage battery is prolonged. Meanwhile, the problem that the normal working of the whole storage battery pack is affected due to certain faulty storage cells in the series-connection storage battery pack is solved. The storage battery effectiveness is achieved to the maximum. The service lifetime of the storage battery pack is further prolonged. The system safety is also guaranteed.
Description
Technical field
The present invention relates to a kind of battery management system, particularly relate to a kind of storage battery discharged in series management system and discharge control method.
Background technology
The batteries of electric automobile has material impact for the operation of automobile and fail safe, the useful life extending batteries is all significant for the operating cost and environmental protection reducing electric automobile, in electric automobile, due to single battery, often capacity is lower, the requirement of hicap can not be met, need several single batteries to be together in series formation batteries, to improve supply power voltage and memory capacity.
The monomer of storage battery is due to reasons such as manufacture crafts, density of electrolyte between different monomers, electrode equivalent resistance etc. also exist difference, when these differences can cause series battery to use, even if each monomer charging and discharging currents is identical, also the capacity of each monomer can be made to produce different, and then affect the work of whole battery pack.The particularly individual difference of cell batteries, often make the easier overdischarge of cell batteries that capacity is low, overdischarge meeting grievous injury storage battery, to the performance of storage battery and the life-span totally unfavorable, battery discharging is larger to internal resistance during final voltage, concentration of electrolyte is very thin, particularly in pole plate hole and surface is almost in neutrality, during overdischarge, internal resistance has heating tendency, volumetric expansion, when discharging current is larger, obvious heating What is more occur heating distortion, at this moment lead sulfate concentration is large especially, the possibility that there is crystal short circuit increases, moreover now lead sulfate can crystallize into larger particles, namely irreversible sulfation is formed, to further increase the internal resistance of storage battery, cause charging recovery capability poor, and be difficult to make it restore when charging, direct capacity and the life-span affecting storage battery.Therefore, a kind of electric discharge management system is newly needed to be born.
Summary of the invention
Object of the present invention is just to provide a kind of accumulator of electric car discharged in series management system and discharge control method to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Storage battery discharged in series management system of the present invention, comprise serial bus, computer, cell batteries, cell batteries test point, cell batteries drops into switch and cell batteries excision switch, described cell batteries, described cell batteries test point, described cell batteries drops into switch and described cell batteries excision switch is multiple, described in each, cell batteries test point is arranged at the two ends of cell batteries described in each respectively, each described cell batteries drops into switch and is all series on described serial bus, a described cell batteries and a described cell batteries drop between switch and are connected in parallel, described in each, cell batteries excision switch is connected between one end of cell batteries described in each and described serial bus, described computer respectively with each cell batteries test point, cell batteries drops into switch and is connected with cell batteries excision switch.
Improve as one, between the two ends of described serial bus the two ends being positioned at load electrical appliance are also connected in parallel to bus voltage table.
Particularly, described cell batteries input switch and described cell batteries excision switch are the one in relay, contactor or semiconductor control switch.
The discharge control method of storage battery discharged in series management system of the present invention, comprises the following steps:
(1) cell batteries input switch and cell batteries excision switch are for interlock and by computer control;
(2) close when all cell batteries drop into switch, when cell batteries excision switch disconnects, each cell batteries starts electric discharge;
(3) when COMPUTER DETECTION reaches the final voltage of regulation to certain cell batteries voltage, cell batteries drops into switch will disconnect this cell batteries immediately, the switch of cell batteries excision simultaneously closes, and is communicated with serial bus, makes this cell batteries stop electric discharge;
(4), after computer stopped the operating state of multiple cell batteries, when making the voltage of whole batteries be difficult to meet the demands, whole batteries terminates electric discharge.
Beneficial effect of the present invention is:
The present invention is a kind of storage battery discharged in series management system and discharge control method, compared with prior art, the present invention is according to the difference of batteries cell batteries voltage, control the time stopping discharge off respectively, stop the problem of cell batteries overdischarge completely, extend the battery-operated life-span, also solve the normal work affecting whole batteries in series-connected batteries because of certain cell batteries generation problem simultaneously, play the effectiveness of storage battery to greatest extent, extend useful life, ensure that the fail safe of system.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1: accumulator of electric car discharged in series management system of the present invention, serial bus L, computer PC, cell batteries 1,2......n, cell batteries test point u is comprised
1, u
2, u
i... u
n, cell batteries drops into switch j
1... j
nwith cell batteries excision switch k
1... .k
n, described cell batteries n, described cell batteries test point u
n, described cell batteries drops into switch j
nwith described cell batteries excision switch k
nbe multiple, cell batteries test point u described in each
nbe arranged at the two ends of cell batteries n described in each respectively, each described cell batteries drops into switch j
nall be series on described serial bus L, a described cell batteries n and described cell batteries drops into switch j
nbetween be connected in parallel, cell batteries excision switch k described in each
nbe connected between the one end of cell batteries n described in each and described serial bus L, described computer PC respectively with each cell batteries test point u
n, cell batteries drops into switch j
nwith cell batteries excision switch k
nconnect.
Improve as one, between the two ends of described serial bus L the two ends being positioned at load electrical appliance R are also connected in parallel to bus voltage Table V.
Particularly, described cell batteries drops into switch j
nwith described cell batteries excision switch k
nbe the one in relay, contactor or semiconductor control switch.
The discharge control method of accumulator of electric car discharged in series management system of the present invention, comprises the following steps:
(1) cell batteries drops into switch j
nwith cell batteries excision switch k
nfor linking and being controlled by computer PC;
(2) when all cell batteries drop into switch j
nclosed, cell batteries excision switch k
nduring disconnection, each cell batteries n starts electric discharge;
(3) when computer PC detects that certain cell batteries n voltage reaches the final voltage of regulation, cell batteries drops into switch j
nthis cell batteries n will be disconnected immediately, the switch of cell batteries excision simultaneously k
nclosed, be communicated with serial bus L, make this cell batteries n stop electric discharge; Avoid the generation of this cell batteries n deep discharge, extend the working life of whole batteries;
(4), after computer stopped the operating state of multiple cell batteries, when making the voltage of whole batteries be difficult to meet the demands, whole batteries terminates electric discharge.
According to the difference of batteries cell batteries voltage, control the time stopping discharge off respectively, stop the problem of cell batteries overdischarge completely, extend the battery-operated life-span, also solve the normal work affecting whole batteries in series-connected batteries because of certain cell batteries generation problem simultaneously, play the effectiveness of storage battery to greatest extent, extend useful life, ensure that the fail safe of system.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (4)
1. a storage battery discharged in series management system, it is characterized in that: comprise serial bus, computer, cell batteries, cell batteries test point, cell batteries drops into switch and cell batteries excision switch, described cell batteries, described cell batteries test point, described cell batteries drops into switch and described cell batteries excision switch is multiple, described in each, cell batteries test point is arranged at the two ends of cell batteries described in each respectively, each described cell batteries drops into switch and is all series on described serial bus, a described cell batteries and a described cell batteries drop between switch and are connected in parallel, described in each, cell batteries excision switch is connected between one end of cell batteries described in each and described serial bus, described computer respectively with each cell batteries test point, cell batteries drops into switch and is connected with cell batteries excision switch.
2. storage battery discharged in series management system according to claim 1, is characterized in that: between the two ends of described serial bus the two ends being positioned at load electrical appliance are also connected in parallel to bus voltage table.
3. storage battery discharged in series management system according to claim 1, is characterized in that: described cell batteries input switch and described cell batteries excision switch are the one in relay, contactor or semiconductor control switch.
4. a discharge control method for storage battery discharged in series management system, is characterized in that, comprises the following steps:
(1) cell batteries input switch and cell batteries excision switch are for interlock and by computer control;
(2) close when all cell batteries drop into switch, when cell batteries excision switch disconnects, each cell batteries starts electric discharge;
(3) when COMPUTER DETECTION reaches the final voltage of regulation to certain cell batteries voltage, cell batteries drops into switch will disconnect this cell batteries immediately, the switch of cell batteries excision simultaneously closes, and is communicated with serial bus, makes this cell batteries stop electric discharge;
(4), after computer stopped the operating state of multiple cell batteries, when making the voltage of whole batteries be difficult to meet the demands, whole batteries terminates electric discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510454629.8A CN104993549A (en) | 2015-07-29 | 2015-07-29 | Storage battery series electrical discharge managing system and discharge control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510454629.8A CN104993549A (en) | 2015-07-29 | 2015-07-29 | Storage battery series electrical discharge managing system and discharge control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104993549A true CN104993549A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510454629.8A Pending CN104993549A (en) | 2015-07-29 | 2015-07-29 | Storage battery series electrical discharge managing system and discharge control method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011188570A (en) * | 2010-03-05 | 2011-09-22 | Toyota Motor Corp | Apparatus and method for power supply control |
| CN102306943A (en) * | 2011-09-15 | 2012-01-04 | 河北工业大学 | Lithium ion battery management system |
| CN204794268U (en) * | 2015-07-29 | 2015-11-18 | 曹兵 | Hold A series of cells management system that discharges |
-
2015
- 2015-07-29 CN CN201510454629.8A patent/CN104993549A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011188570A (en) * | 2010-03-05 | 2011-09-22 | Toyota Motor Corp | Apparatus and method for power supply control |
| CN102306943A (en) * | 2011-09-15 | 2012-01-04 | 河北工业大学 | Lithium ion battery management system |
| CN204794268U (en) * | 2015-07-29 | 2015-11-18 | 曹兵 | Hold A series of cells management system that discharges |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151021 |
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| WD01 | Invention patent application deemed withdrawn after publication |