CN103904372A - Capacity grading cabinet for groups of lithium batteries - Google Patents

Capacity grading cabinet for groups of lithium batteries Download PDF

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Publication number
CN103904372A
CN103904372A CN201210587055.8A CN201210587055A CN103904372A CN 103904372 A CN103904372 A CN 103904372A CN 201210587055 A CN201210587055 A CN 201210587055A CN 103904372 A CN103904372 A CN 103904372A
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CN
China
Prior art keywords
groups
cell
grading
lithium battery
charging
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.)
Pending
Application number
CN201210587055.8A
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Chinese (zh)
Inventor
李瑶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen OptimumNano Energy Co Ltd
Original Assignee
Shenzhen OptimumNano Energy Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen OptimumNano Energy Co Ltd filed Critical Shenzhen OptimumNano Energy Co Ltd
Priority to CN201210587055.8A priority Critical patent/CN103904372A/en
Publication of CN103904372A publication Critical patent/CN103904372A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • H01M10/441Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • H01M10/446Initial charging measures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses a capacity grading cabinet for groups of lithium batteries. The capacity grading cabinet comprises a clamping device of the groups of batteries, a charging and discharging device, a power source device, an energy recovering device and a testing control board, wherein a charging circuit and a discharging circuit are arranged in the charging and discharging device which is connected onto the power device and the energy recovering device; the power device is externally connected with an electric supply power grid and converts alternative electric supply into low-voltage direct-current electricity to enable the charging and discharging device to charge battery cells in the clamping device; the energy recovering device is used for boosting the discharging voltage of the battery cells in the charging and discharging device, converting the electricity into alternative current and returning the alternative current into the electric supply power grid or a local area power grid; the testing control board is used for detecting and controlling the charging and discharging conditions of the battery cells and recording the charging and discharging current of the battery cells and the charging and discharging time. Compared with the prior art, the capacity grading cabinet for the groups of lithium batteries has the advantages of being capable of achieving charging and discharging of large current, and shortening the capacity grading period of the batteries, being high in assembling efficiency, being capable of recovering the electric energy and saving energy, and being capable of measuring the internal resistance of the batteries.

Description

Lithium battery is grading system in groups
[technical field]
The present invention relates to technical field of new energies, relate in particular to a kind of lithium battery grading system in groups.
[background technology]
Lithium ion battery is as the important component part of new energy field, it relies on the advantages such as it is lightweight, specific energy is high, operating voltage is high, the life-span is long, self discharge is low, obtain significant progress, and be applied to rapidly in various modernization mobile communication equipments and field of portable electronic apparatus.Along with growing in intensity of energy crisis, each state is all in the substitute of finding most suitable energy source of car, and lithium ion battery, because it possesses above-mentioned advantage, becomes the preferred new forms of energy of each auto vendor gradually.
People find in practice, and the capacity of the cell that same process condition is produced by batch is out different, even differs greatly.If the cell of these different capabilities is not distinguished; directly use with series-parallel system; in the process discharging and recharging; often there will be partial monosomy over-charging of battery; the charging of partial monosomy battery is unsaturated; have a strong impact on the life-span of cell, also the stability of whole electric power system has been buried to hidden danger.As can be seen here, the cell processing being given to partial volume processes most important.
Mainly there is the deficiency of following two aspects in existing grading system: 1) manually cell is clamped in one by one and is provided with between elastomeric probe, efficiency is low, and elastomeric pressure is inconsistent, and impact discharges and recharges effect; 2) in the process of battery partial volume, need each cell to carry out repeatedly charging and discharging several times, current traditional handicraft is to be that thermal energy consumption is fallen by the Conversion of Energy of each cell electric discharge, has wasted the energy, and has caused ambient temperature to raise.
In view of above drawback, be in fact necessary to provide a kind of improved lithium battery in groups grading system to overcome above-mentioned defect.
[summary of the invention]
The invention provides one simple in structure, cheap for manufacturing cost, partial volume efficiency is high, and energy effective use of energy sources, cost-effective lithium battery grading system in groups.
To achieve these goals, the present invention adopts following technical scheme: a kind of lithium battery grading system in groups, and it comprises:
The clamping device of stack battery, is provided with the probe for docking each cell both positive and negative polarity, stretches out and is connected to the first wire of charge and discharge device respectively from both positive and negative polarity probe;
Charge and discharge device, is inside provided with charging, the discharge circuit of battery, and it is for being connected to supply unit and energy recycle device;
Supply unit, the external utility grid of supply unit, and electric main is become to low-voltage DC for charge and discharge device, the each cell in clamping device is charged;
Energy recycle device, is back in utility grid or local power net for the discharge voltage of the each cell of charge and discharge device raising and converting alternating current to;
Test control panel, for detection of and control the situation that discharges and recharges of each cell, and record the charging of each cell, size and the time of discharging current.
As the lithium battery of the present invention one improvement of grading system in groups, the clamping device of described stack battery comprises base, top board, bottom plate and upwards extends through the guide rod of bottom plate from base, between described top board and bottom plate, be provided with cylinder driver, leader casing between bottom plate and base is provided with spring, the opposite face of top board and bottom plate is also respectively arranged with needle plate and lower needle plate, on lower needle plate, is also placed with cell collecting box.
As the lithium battery of the present invention one improvement of grading system in groups, described energy recycle device comprises BOOST booster circuit and inverter circuit.
As the lithium battery of the present invention one improvement of grading system in groups, described test control panel can be set maximum charging voltage and the minimum discharge voltage of each cell, and the real-time voltage of the each cell of implementing monitoring, to control the opening and closing that each cell is discharged and recharged.
As lithium battery of the present invention in groups the one of grading system improve, described grading system also comprises storing framework that can layering, all lays the clamping device of described stack battery on every layer of storing framework.
As the lithium battery of the present invention one improvement of grading system in groups, described supply unit converts electric main to 12V direct current.
As the lithium battery of the present invention one improvement of grading system in groups, described lithium battery in groups grading system is also provided with electric cabinet, and described charge and discharge device, supply unit, energy recycle device and test control panel are contained in electric cabinet.
As the lithium battery of the present invention one improvement of grading system in groups, described upper needle plate is consistent with lower needle plate structure, is equipped with some probes that matrix is arranged that are on it.
As the lithium battery of the present invention one improvement of grading system in groups, the charging of described charge and discharge device, the electric current of electric discharge are 20A~30A.
As the lithium battery of the present invention one improvement of grading system in groups, described lithium battery in groups grading system also comprises internal resistance of cell detecting unit, and described internal resistance of cell detecting unit can detect the internal resistance of battery simultaneously and be recorded in test control panel in the time of cell partial volume.
The present invention compared with prior art has the following advantages:
1) can realize high current charge-discharge, shorten the partial volume cycle of battery;
2) the placement cell of whole box is tested partial volume, and efficiency of assembling is high;
3) electric energy is recycled, the energy-conservation energy, and can guarantee that ambient temperature does not raise, guarantee the accuracy of partial volume;
4), in the process of partial volume, can also measure the internal resistance of battery.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, to lithium battery of the present invention, grading system and useful technique effect thereof are elaborated in groups.
Accompanying drawing 1 is lithium battery of the present invention grading system overall structure stereogram in groups;
Accompanying drawing 2 is the lithium battery of the present invention stereogram of the clamping device of grading system A part in groups;
Accompanying drawing 3 is the lithium battery of the present invention exploded view of the clamping device part-structure of grading system in groups;
Accompanying drawing 4 is the lithium battery of the present invention principle assumption diagram of grading system in groups;
Accompanying drawing 5 is the lithium battery of the present invention main circuit figure of the internal resistance detection unit of grading system in groups.
[embodiment]
Please refer to shown in Fig. 1 to Fig. 5, a kind of lithium battery of the present invention grading system 100 in groups, it comprises: the clamping device 10 of stack battery, be provided with the probe for docking each cell both positive and negative polarity, and stretch out and be connected to the first wire of charge and discharge device from both positive and negative polarity probe respectively; Charge and discharge device 20, inside be provided with charging, the discharge circuit of battery, it is for being connected to supply unit and energy recycle device, supply unit 30, the external utility grid of supply unit, and electric main is become to low-voltage DC for charge and discharge device, the each cell in clamping device is charged, energy recycle device 40, is back in utility grid or local power net for the discharge voltage of the each cell of charge and discharge device raising and converting alternating current to; Test control panel 50, for detection of and control the situation that discharges and recharges of each cell, and record the charging of each cell, size and the time of discharging current.
The clamping device 10 of stack battery comprises base 11, top board 12, bottom plate 13, upper and lower needle plate (14,15), cylinder driver 16, guide rod 17, spring 18 and cell collecting box 60.Wherein, described base 11, top board 12 and bottom plate 13 structures are basically identical, be rectangle sheet, this three's top-down assembling sequence is: ground floor is top board 12, intermediate layer is bottom plate 13, orlop is base 11, between described top board 12 and bottom plate 13, cylinder driver 16 is installed, described cylinder driver 16 comprises ejecting rod of cylinder, be connected to the top board 161 on ejecting rod of cylinder, the two ends of described top board 161 also offer through hole 162, aforesaid guide rod 17 is installed in through hole 162, it passes bottom plate 13 after extending, and be finally fixedly installed on base 11, on the guide rod 17 between bottom plate 13 and base 11, be arranged with spring 18.Aforesaid top board 161 is fixedly attached to top board 12, like this, in the time that ejecting rod of cylinder shrinks, due to the elastic force effect of spring 18, spacing between bottom plate 13 and base 11 can remain unchanged substantially, but moves to bottom plate 13 directions under the pulling force that top board 12 can shrink at push rod.The opposite face of described top board 12 and bottom plate 13 is also respectively arranged with needle plate 14 and lower needle plate 15, and described upper needle plate 14 is consistent with lower needle plate 15 structures, is equipped with some probes that matrix is arranged that are on it.On lower needle plate, be also placed with cell collecting box 60, described cell collecting box 60 is for accommodating each cell 70 and guaranteeing that the both positive and negative polarity of cell 70 is corresponding one by one with the probe on upper and lower needle plate.
The charging, the discharge circuit that in charge and discharge device 20 of the present invention, adopt, all adopt direct current constant-current circuit, can also realize high current charge-discharge effect of 20A~30A.
The external utility grid of supply unit 30, and electric main is become to 12V low-voltage DC for charge and discharge device, the each cell in clamping device is charged, described supply unit 30 can be selected some common power supply changeover devices.
Energy recycle device 40 comprises BOOST booster circuit and inverter circuit, in the present invention, because the voltage of cell 70 is smaller, therefore can repeatedly boost to cell 70, preferably, first cell is boosted to 12V, then boost to 60V, subsequently, again boost into alternating current 220V in conjunction with inverter circuit.
A kind of lithium battery of the present invention in groups grading system 100 also comprises storing framework 80 that can layering, all lays the clamping device 10 of described stack battery on every layer of storing framework 80; Side at storing framework 80 is also provided with electric cabinet 90, and aforesaid charge and discharge device 20, supply unit 30, energy recycle device 40 and test control panel 50 are contained in electric cabinet.For the ease of the later maintenance of grading system, the rapid wear electronic original part in this equipment can be made respectively to some unit modules, for example, described test control panel assembles with regard to comprising some little test control panels.
A kind of lithium battery of the present invention in groups grading system 100 is to work like this: first the cell 70 for the treatment of partial volume is packed in cell collecting box 60, and keep cell 70 to erect placement, again the cell of whole box is positioned in the clamping device 10 of the stack battery on every one deck storing framework of grading system 100, specifically, exactly whole box cell is positioned over to lower needle plate 15 tops of stack battery clamping device 10, and guarantees that the probe on lower needle plate 15 is corresponding one by one with the end utmost point of cell 70 belows.In partial volume process, first, grading system 100 can charge to the each cell 70 in cell collecting box 60, start the cylinder driver 16 of stack battery clamping device 10, under the effect of cylinder driver 16, upper needle plate 14 downwards needle plate 15 directions moves, until the probe on upper needle plate 14 respectively accordingly butt to the other end utmost point for the treatment of partial volume battery, subsequently, supply unit 30 converts civil power to 12V direct current and by charge and discharge device 20, each cell 70 is charged, in this process, test control panel 50 can be according to the charged state of the each cell of maximum charging voltage control of predefined each cell 70, described test control panel 50 can also record the size of charging current and the length in charging interval, subsequently, in discharge process, test control panel 50 can be according to the discharge condition of the minimum discharge voltage control cell of predefined each cell, described test control panel 50 also can record the size of discharging current and the length of discharge time, according to Q=IT, can just can learn according to the electric weight difference discharging and recharging the capacity of cell, in actual partial volume process, can carry out repeated charge and measure multiple differences to guarantee that the accuracy of monomer battery capacity is high cell 70.Above-mentioned multiple difference all can be recorded in the chip of test control panel 50, again according to certain computational methods (such as, average) finally determine the capacity of each battery, and the position relationship in battery case is mapped and leaves in the chip of test control panel 50 by the size of capacity and each cell, subsequently, user can operate the control flow of this device, just can demonstrate capacity and the positional information of each cell on control flow.In aforementioned discharge process, each cell can be recycled to the electric energy in cell in utility grid or local power net through BOOST booster circuit and inverter circuit.After discharging and recharging, when cylinder driver 16 drives on ejecting rod of cylinder, just can hold up top board 12, make top board 12 return to initial position.
Lithium battery in groups grading system also comprises internal resistance of cell detecting unit, described internal resistance of cell detecting unit can detect the internal resistance of battery simultaneously and be recorded in the chip of test control panel 50 in the time of cell partial volume, and the main circuit figure of described internal resistance detection unit please refer to shown in Fig. 5.
A kind of lithium battery of the present invention grading system in groups, be not restricted to described in specification and execution mode, therefore for the personnel of familiar field, can easily realize additional advantage and modification, therefore in the case of not deviating from the spirit and scope of the universal that claim and equivalency range limit, the present invention is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.

Claims (10)

1. a lithium battery grading system in groups, is characterized in that, comprising:
The clamping device of stack battery, is provided with the probe for docking each cell both positive and negative polarity, stretches out and is connected to the first wire of charge and discharge device respectively from both positive and negative polarity probe;
Charge and discharge device, is inside provided with charging, the discharge circuit of battery, and it is for being connected to supply unit and energy recycle device;
Supply unit, the external utility grid of supply unit, and electric main is become to low-voltage DC for charge and discharge device, the each cell in clamping device is charged;
Energy recycle device, is back in utility grid or local power net for the discharge voltage of the each cell of charge and discharge device raising and converting alternating current to;
Test control panel, for detection of and control the situation that discharges and recharges of each cell, and record the charging of each cell, size and the time of discharging current.
2. lithium battery as claimed in claim 1 grading system in groups, it is characterized in that: the clamping device of described stack battery comprises base, top board, bottom plate and upwards extends through the guide rod of bottom plate from base, between described top board and bottom plate, be provided with cylinder driver, leader casing between bottom plate and base is provided with spring, the opposite face of top board and bottom plate is also respectively arranged with needle plate and lower needle plate, on lower needle plate, is also placed with cell collecting box.
3. lithium battery as claimed in claim 1 grading system in groups, is characterized in that: described energy recycle device comprises BOOST booster circuit and inverter circuit.
4. lithium battery as claimed in claim 1 grading system in groups, it is characterized in that: described test control panel can be set maximum charging voltage and the minimum discharge voltage of each cell, and the real-time voltage of the each cell of implementing monitoring, to control the opening and closing that each cell is discharged and recharged.
5. lithium battery as claimed in claim 1 grading system in groups, is characterized in that: described grading system also comprises storing framework that can layering, all lays the clamping device of described stack battery on every layer of storing framework.
6. lithium battery as claimed in claim 1 grading system in groups, is characterized in that: described supply unit converts electric main to 12V direct current.
7. lithium battery as claimed in claim 1 grading system in groups, is characterized in that: described lithium battery in groups grading system is also provided with electric cabinet, and described charge and discharge device, supply unit, energy recycle device and test control panel are contained in electric cabinet.
8. lithium battery as claimed in claim 2 grading system in groups, is characterized in that: described upper needle plate is consistent with lower needle plate structure, is equipped with some probes that matrix is arranged that are on it.
9. lithium battery as claimed in claim 1 grading system in groups, is characterized in that: the charging of described charge and discharge device, the electric current of electric discharge are 20A~30A.
10. the arbitrary lithium battery grading system in groups as described in claim 1-9, it is characterized in that: described lithium battery in groups grading system also comprises internal resistance of cell detecting unit, described internal resistance of cell detecting unit can detect the internal resistance of battery simultaneously and be recorded in test control panel in the time of cell partial volume.
CN201210587055.8A 2012-12-28 2012-12-28 Capacity grading cabinet for groups of lithium batteries Pending CN103904372A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104810558A (en) * 2015-04-15 2015-07-29 浙江金开来新能源科技有限公司 Formation/capacity grading cabinet with heat dissipation function
CN104934998A (en) * 2015-06-24 2015-09-23 深圳敏正科技有限公司 Battery capacity grading cabinet and battery capacity grading method
CN105070948A (en) * 2015-07-28 2015-11-18 浙江杭可科技有限公司 Formatting and grading equipment for soft package lithium-ion batteries

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CN203039042U (en) * 2012-12-28 2013-07-03 深圳市沃特玛电池有限公司 Capacity grading cabinet for groups of lithium batteries

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104810558A (en) * 2015-04-15 2015-07-29 浙江金开来新能源科技有限公司 Formation/capacity grading cabinet with heat dissipation function
CN104934998A (en) * 2015-06-24 2015-09-23 深圳敏正科技有限公司 Battery capacity grading cabinet and battery capacity grading method
CN105070948A (en) * 2015-07-28 2015-11-18 浙江杭可科技有限公司 Formatting and grading equipment for soft package lithium-ion batteries

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Application publication date: 20140702