CN106026315A - Equalizing charge device and control method thereof - Google Patents
Equalizing charge device and control method thereof Download PDFInfo
- Publication number
- CN106026315A CN106026315A CN201610646925.2A CN201610646925A CN106026315A CN 106026315 A CN106026315 A CN 106026315A CN 201610646925 A CN201610646925 A CN 201610646925A CN 106026315 A CN106026315 A CN 106026315A
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- CN
- China
- Prior art keywords
- charging
- cells
- battery
- switch
- pressing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- 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
-
- 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
Abstract
The invention discloses an equalizing charge device. Charging balance work is completed through two charging mechanisms. The equalizing charge device has the advantages that compared with dissipation type balance, no thermal management problem exists. Compared with capacitance or induction energy storage non-dissipation balance, the method is large in balance current, high in efficiency and high in speed; compared with balance of a transformer, the method does not need a magnetic core or a coil, no magnetic leakage exists, and the size is controllable.
Description
Technical field
The present invention relates to lithium cell charging field.
Background technology
Equilibrium is the key technology solving battery cell diversity.Electric vehicle can be divided into according to use state
Charging stage and electric discharge and idle stage.For the work characteristics that two stages are different, formulate different respectively
Balance policy.
The charging stage purpose of equilibrium is just so that all of monomer can be full of, and avoids monomer electricity as far as possible
Inconsistent situation.At present document it has been reported that charge balancing generally use dissipative equalization or non-dissipative type
Equilibrium.
Dissipative equalization scheme produces amount of heat while heat sink resistance waste electricity, causes heat management to ask
Topic, and euqalizing current is relative to charging current excessively Microsoft.
It is low to voltage from the monomer that voltage is high that the equilibrium of non-dissipative type often utilizes inductance and electric capacity to realize energy
Monomer transfer, the time required for equilibrium is the longest, does not meets the battery charging requirement to rapidity；And frequency
Numerous switching switch also can consume a lot of energy, and some can be due to device certainly in transfer process for electric energy
Loss and be consumed.Coaxial coil transformator equalizing circuit, between winding to each single battery
Conductor length is different with shape, and transformation ratio is variant, and cause equalizing each single battery is inconsistent.Coaxially
Coil itself, due to problems such as electromagnetic exposure, consumes certain energy；The volume of transformator also limits simultaneously
It is in the application of a lot of compact occasions.These problems make above-mentioned nondissipative equalization scheme be difficult to practical.
Summary of the invention
The technical problem to be solved is that a kind of charge efficiency of realization is high, stable, safe and reliable
Balanced charging device.
To achieve these goals, the technical solution used in the present invention is: balanced charging device, and system includes
Charger and set of cells to be charged, described set of cells by multiple battery cell pack at upper cover plate and lower cover
Between constitute, described battery unit is made up of multiple battery cells, and described charger is provided with two and connects respectively
The charging wire clamp of set of cells both positive and negative polarity terminals, described set of cells is provided with BMS, it is characterised in that:
Described charger output electric energy connects straight to the input of a DC-DC, the outfan of described DC-DC
Stream bus, the shunting branch line on described dc bus is logical by one of them switch of multipath control switch respectively
Road connects charging electrode, the switch ways quantity of described multipath control switch and the battery unit quantity of set of cells
Identical, each described battery unit is equipped with independent input electrode, and described input electrode is each attached to upper cover
The upper surface of plate；
Described charger is provided with the support seat of placing battery group, and described support seat is arranged over the pressing plate that charges, institute
Stating charging pressing plate to be fixed on lower air cylinder, described charging electrode is fixed on the lower surface of charging pressing plate, described
Controller is connected and receives the electric quantity signal of each battery cell that BMS exports and each battery cell with BMS
Temperature signal, the switch element on described controller output make-and-break signal to multipath control switch and charging wire clamp.
Described input electrode be depression conductive metal sheet, described charging electrode be spherical or hemispherical dome structure also
It is fixed on charging pressing plate lower surface by Flexible Connector.
Being fixed with cover sheet on described upper cover plate, the corner of described cover sheet is provided with fixing hole and passes through spiral shell
Nail is fixed on the upper cover plate of set of cells, and described cover sheet edge was provided with for lacking that both positive and negative polarity terminals stretch out
Mouthful.
Described supports at least provided with two leads protruded on seat, and described charging pressing plate is provided with and guides
The pilot hole that post matches, described support seat is provided with the cavity matched with set of cells lower cover.
The lower surface of described charging pressing plate is provided with smoke detectors, and described smoke detectors output smoke signal is extremely
Controller, four corners of described support seat are equipped with the nozzle being tilted towards set of cells ejecting extinguishing material, institute
Stating nozzle to be connected by the pressure vessel of pipeline with storage fire extinguishing material, described pipeline is provided with electromagnetic valve, institute
State controller and output control signals to electromagnetic valve.
The control method of balanced charging device:
Charger starts, and charging wire clamp charges to set of cells, when BMS system detects a certain battery unit
After all battery cells all reach charge protection voltage, charging wire clamp stops charging；
Open each switch ways of multipath control switch successively, all battery units are individually charged, if
In the battery unit of current charging, all battery cells close current switch path after reaching charge protection voltage,
Open next switch ways, until all switch ways complete once to open.
The output electric current of the described charging wire clamp output electric current more than DC-DC, it is equal that described DC-DC carries out constant voltage
Weighing apparatus charging.
If controller receives temperature anomaly signal, then charge closing machine reporting to the police, if controller receives cigarette
Mist abnormal signal, then opens solenoid valve reporting to the police.
If controller receives temperature anomaly signal, rise charging pressing plate, if controller receives smog simultaneously
Abnormal signal, then keep charging pressing plate pressed status.
It is an advantage of the current invention that compared to dissipative equalization, there is not heat management problems；Compared to electric capacity or electricity
The non-dissipation equilibrium of sense energy storage, the method euqalizing current is big, and efficiency is high, and speed is fast；Equalize compared to transformator,
The method is without magnetic core and coil, and without magnetic leakage, volume is controlled.
Accompanying drawing explanation
The content expressed every width accompanying drawing in description of the invention below is briefly described:
Fig. 1 is balanced charging device block diagram.
Detailed description of the invention
Balanced charging device includes charging system and the set of cells of matched use.
Lithium battery is generally made up of battery unit multiple battery cells, then after multiple battery units are connected with each other
It is encapsulated between upper cover plate and lower cover composition set of cells, the string between battery cell and between battery unit
Parallel relationship needs design according to set of cells.
Charger is device for converting electric energy, for charging to set of cells, the upper cover plate of set of cells is fixed with defeated
Going out the both positive and negative polarity terminals of electric energy, charger is provided with charging wire clamp, it is possible to use charging wire clamp clamping is positive and negative
Pole terminals are set of cells charging, for the ease of coordinating charging with the miscellaneous part of charging device, and do not produce
Interfering, both positive and negative polarity terminals are preferably provided at the edge of upper cover plate, for the ease of controlling charging wire clamp work shape
State, the supply line of charging wire clamp is provided with switch element.
Charger output electric energy connects dc bus to the input of a DC-DC, the outfan of DC-DC,
Shunting branch line on dc bus connects charged electrical by one of them switch ways of multipath control switch respectively
Pole, DC-DC is a direct current transformation module, is used for regulating charging voltage, and each switch ways is provided with one
Corresponding charging electrode, the switch ways quantity of multipath control switch and the battery unit quantity of set of cells
Identical, so, each battery unit is equipped with independent input electrode, wiring of charging for convenience, input
Electrode, by independent cabling, is each attached to the upper surface of upper cover plate.
The input of DC-DC and outfan are equipped with voltage acquisition unit, and voltage acquisition unit output electric energy is to control
Device processed, is used for monitoring input and output voltage, if occurring abnormal, and can be with shutoff device, it is to avoid affect battery
Group.
Charger is provided with the support seat of placing battery group, supports seat and is used for limiting and positioning lower cover, supports seat
It is provided with the cavity closed with set of cells lower cover matching form, set of cells can be limited in cavity reliably.
Supporting seat and be arranged over the pressing plate that charges, charging voltage plate level is arranged, and charging pressing plate is fixed on lower air cylinder,
Pressure or the rising down of charging voltage plate can be controlled, for guaranteeing stablizing of charging pressing plate upper and lower displacement by lower air cylinder
Reliably, supporting at least provided with two leads protruded on seat, charging pressing plate is provided with and matches with lead
Pilot hole.
Charging electrode is fixed on the lower surface of charging pressing plate, the fixed position of charging electrode and set of cells upper cover plate
On input electrode position corresponding, thus realize quickly connecting, input electrode is the conductive metal sheet of depression,
Charging electrode is spherical or hemispherical dome structure and is fixed on charging pressing plate lower surface by Flexible Connector, elastic
Connector is the metal clips of spring or folding, can be coordinated the conductive metal sheet of depression by Flexible Connector
It is fully contacted with spherical or hemispherical dome structure, it is ensured that charging reliability, the charging pressing plate that also can make and set of cells
There is certain interval, it is possible to guarantee the ventilation and heat of set of cells when charging between upper cover plate, improve charging peace
Quan Xing.
Set of cells is furnished with BMS (battery management system), and BMS is provided with independent circumscription socket, and charger is provided with
Controller, controller is provided with Signal plug, by Signal plug inserts the circumscription socket of BMS, Ke Yirang
The information of the BMS that controller gathers.
Controller is connected and receives the electric quantity signal of each battery cell that BMS exports with BMS, and controller is
Charging master control device, it is according on setting program output make-and-break signal to multipath control switch and charging wire clamp
Switch element, when controlling multipath control switch, can control the different switch ways of multipath control switch respectively
On and off.
Controller is the temperature signal of each battery cell in gathering BMS simultaneously, by utilizing BMS to gather battery
The temperature signal of monomer, it is possible to reduce equipment investment cost, it is not necessary to another increase device collecting temperature, also can
The most effective temperature regime monitoring battery.If during temperature anomaly, can carry out stopping the control of charging,
Avoid occurring surprisingly.
Owing to not only having both positive and negative polarity terminals on upper cover plate, the most substantial amounts of input electrode, for avoiding occurring to break
Road accident, upper cover plate is fixed with cover sheet, and the corner of cover sheet is provided with fixing hole and passes through screw admittedly
Being scheduled on the upper cover plate of set of cells, cover sheet edge is provided with the breach stretched out for both positive and negative polarity terminals, passes through
Increase cover sheet and improve the stability of charging device and the work of matched set of cells further with reliable
Property.
The lower surface of charging pressing plate is provided with smoke detectors, smoke detectors output smoke signal to controller,
Can find in time to report to the police when there is the condition of a fire, four corners of this outer support seat are equipped with and are tilted towards battery
The nozzle of group ejecting extinguishing material, nozzle is connected by the pressure vessel of pipeline with storage fire extinguishing material, pipeline
Being provided with electromagnetic valve, controller outputs control signals to electromagnetic valve, moreover it is possible to carry out at fire extinguishing when there is the condition of a fire
Reason.
Charging device of the present invention is safe and convenient to use, after taking off cover sheet before use, set of cells is placed
In supporting seat, plugging Signal plug on BMS, control lower air cylinder and decline, charger is according to setting afterwards
Fixed program is charged, and after charging terminates, lower air cylinder rises, and charging pressing plate rises therewith, takes off electricity
Pond group, loads onto cover sheet and i.e. completes an equalizaing charge.
Control method based on balanced charging device:
Charger starts, and charging wire clamp charges to set of cells, when BMS system detects a certain battery unit
After all battery cells all reach charge protection voltage, charging wire clamp stops charging；
Open each switch ways of multipath control switch successively, all battery units are individually charged, if
In the battery unit of current charging, all battery cells close current switch path after reaching charge protection voltage,
Open next switch ways, until all switch ways complete once to open.
The output electric current of the charging wire clamp output electric current more than DC-DC, DC-DC carries out constant voltage equalizaing charge.Its
Ultimate principle is that charging starting stage charger carries out constant-current charge to set of cells, with bigger electric current by battery
Group is close to " being full of ".After BMS system detects that a certain battery unit takes the lead in reaching charge protection voltage, fill
Motor stops constant-current charge；Then under the control of BMS system, DC-DC passes through variable connector successively to institute
There is battery unit to carry out constant voltage and " equalize " charging, until all monomers charge after all reaching charge protection voltage
Stop.The most all monomers are each filled with, and reach target.
If controller receives temperature anomaly signal (exceeding design temperature), then charge closing machine reporting to the police, with
Shi Shangsheng charges pressing plate, allows heat disperse as early as possible, it is to avoid breaking out of fire, if controller to receive smog abnormal
Shape is pressed under signal (smokescope exceedes design temperature), then opens solenoid valve reporting to the police, and the pressing plate that keeps charging
State, under charging pressing plate, pressure energy enough reduces internal oxygen intake and avoids the condition of a fire to expand, and cooperation fighting nozzle can
Effectively control the condition of a fire.
Above in conjunction with accompanying drawing, the present invention is exemplarily described, it is clear that the present invention implements not by upper
State the restriction of mode, if the various unsubstantialities that the method design that have employed the present invention is carried out with technical scheme
Improvement, or the most improved design by the present invention and technical scheme directly apply to other occasion, all exists
Within protection scope of the present invention.
Claims (9)
1. balanced charging device, system includes charger and set of cells to be charged, and described set of cells is by multiple
Battery cell pack is constituted between upper cover plate and lower cover, and described battery unit is made up of multiple battery cells,
Described charger is provided with two charging wire clamps connecting set of cells both positive and negative polarity terminals respectively, and described set of cells sets
There is BMS, it is characterised in that:
Described charger output electric energy connects straight to the input of a DC-DC, the outfan of described DC-DC
Stream bus, the shunting branch line on described dc bus is logical by one of them switch of multipath control switch respectively
Road connects charging electrode, the switch ways quantity of described multipath control switch and the battery unit quantity of set of cells
Identical, each described battery unit is equipped with independent input electrode, and described input electrode is each attached to upper cover
The upper surface of plate；
Described charger is provided with the support seat of placing battery group, and described support seat is arranged over the pressing plate that charges, institute
Stating charging pressing plate to be fixed on lower air cylinder, described charging electrode is fixed on the lower surface of charging pressing plate, described
Controller is connected and receives the electric quantity signal of each battery cell that BMS exports and each battery cell with BMS
Temperature signal, the switch element on described controller output make-and-break signal to multipath control switch and charging wire clamp.
Balanced charging device the most according to claim 1, it is characterised in that: described input electrode is recessed
The conductive metal sheet fallen into, described charging electrode is spherical or hemispherical dome structure and is fixed on by Flexible Connector
Charging pressing plate lower surface.
Balanced charging device the most according to claim 1 and 2, it is characterised in that: on described upper cover plate
Being fixed with cover sheet, the corner of described cover sheet is provided with fixing hole and is fixed by screws in set of cells
On upper cover plate, described cover sheet edge is provided with the breach stretched out for both positive and negative polarity terminals.
Balanced charging device the most according to claim 3, it is characterised in that: described support seat is up to
Being provided with two leads protruded less, described charging pressing plate is provided with the pilot hole matched with lead, institute
State support seat and be provided with the cavity matched with set of cells lower cover.
Balanced charging device the most according to claim 4, it is characterised in that: under described charging pressing plate
Surface is provided with smoke detectors, described smoke detectors output smoke signal to controller, described support seat four
Individual corner is equipped with the nozzle being tilted towards set of cells ejecting extinguishing material, and described nozzle passes through pipeline and storage
The pressure vessel of fire extinguishing material connects, and described pipeline is provided with electromagnetic valve, described controller output control signal
To electromagnetic valve.
6. control method based on balanced charging device described in claim 1-5, it is characterised in that:
Charger starts, and charging wire clamp charges to set of cells, when BMS system detects a certain battery unit
After all battery cells all reach charge protection voltage, charging wire clamp stops charging；
Open each switch ways of multipath control switch successively, all battery units are individually charged, if
In the battery unit of current charging, all battery cells close current switch path after reaching charge protection voltage,
Open next switch ways, until all switch ways complete once to open.
7. the control method described in 6 on request according to right, it is characterised in that: the output of described charging wire clamp
The electric current output electric current more than DC-DC, described DC-DC carries out constant voltage equalizaing charge.
8. the control method described in 6 or 7 on request according to right, it is characterised in that: if controller receives
Temperature anomaly signal, then charge closing machine reporting to the police, if controller receives smog abnormal signal, then open
Electromagnetic valve is also reported to the police.
9. the control method described in 8 on request according to right, it is characterised in that: if controller receives temperature
Abnormal signal, rises charging pressing plate simultaneously, if controller receives smog abnormal signal, then keeps charging voltage
Plate pressed status.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646925.2A CN106026315A (en) | 2016-08-09 | 2016-08-09 | Equalizing charge device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646925.2A CN106026315A (en) | 2016-08-09 | 2016-08-09 | Equalizing charge device and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106026315A true CN106026315A (en) | 2016-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610646925.2A Pending CN106026315A (en) | 2016-08-09 | 2016-08-09 | Equalizing charge device and control method thereof |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962685A (en) * | 2019-12-06 | 2020-04-07 | 江西博能上饶客车有限公司 | Battery management system for electric motor coach |
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| US20090066292A1 (en) * | 2007-09-11 | 2009-03-12 | Yen-Chung Jao | Battery structure and charging device adapted for the battery structure |
| CN102709981A (en) * | 2012-06-07 | 2012-10-03 | 广州益维电动汽车有限公司 | Energy-lossless equalizing charging device for series lithium ion battery pack |
| CN103094969A (en) * | 2013-02-08 | 2013-05-08 | 深圳市沃特玛电池有限公司 | Battery equalization device |
| CN203260689U (en) * | 2013-03-22 | 2013-10-30 | 天津力神电池股份有限公司 | Clamping tool simultaneously used for charge and discharge of aluminum shell and flexible-package laminated lithium ion batteries |
| CN204668994U (en) * | 2015-05-14 | 2015-09-23 | 亿科钟表科技（深圳）有限公司 | Automatic inflatable motor |
| CN204946959U (en) * | 2015-08-27 | 2016-01-06 | 祖小矮 | A kind of battery modules |
-
2016
- 2016-08-09 CN CN201610646925.2A patent/CN106026315A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090066292A1 (en) * | 2007-09-11 | 2009-03-12 | Yen-Chung Jao | Battery structure and charging device adapted for the battery structure |
| CN102709981A (en) * | 2012-06-07 | 2012-10-03 | 广州益维电动汽车有限公司 | Energy-lossless equalizing charging device for series lithium ion battery pack |
| CN103094969A (en) * | 2013-02-08 | 2013-05-08 | 深圳市沃特玛电池有限公司 | Battery equalization device |
| CN203260689U (en) * | 2013-03-22 | 2013-10-30 | 天津力神电池股份有限公司 | Clamping tool simultaneously used for charge and discharge of aluminum shell and flexible-package laminated lithium ion batteries |
| CN204668994U (en) * | 2015-05-14 | 2015-09-23 | 亿科钟表科技（深圳）有限公司 | Automatic inflatable motor |
| CN204946959U (en) * | 2015-08-27 | 2016-01-06 | 祖小矮 | A kind of battery modules |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962685A (en) * | 2019-12-06 | 2020-04-07 | 江西博能上饶客车有限公司 | Battery management system for electric motor coach |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20161012 |