CN102637840A - Intelligent diving lithium battery pack with pressure compensating device and preparation method thereof - Google Patents

Intelligent diving lithium battery pack with pressure compensating device and preparation method thereof Download PDF

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Publication number
CN102637840A
CN102637840A CN2012101074338A CN201210107433A CN102637840A CN 102637840 A CN102637840 A CN 102637840A CN 2012101074338 A CN2012101074338 A CN 2012101074338A CN 201210107433 A CN201210107433 A CN 201210107433A CN 102637840 A CN102637840 A CN 102637840A
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CN
China
Prior art keywords
lithium battery
pressure
casing
battery
leather bag
Prior art date
Application number
CN2012101074338A
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Chinese (zh)
Inventor
戴国群
Original Assignee
北京神州远望科技有限公司
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Priority to CN2012101074338A priority Critical patent/CN102637840A/en
Publication of CN102637840A publication Critical patent/CN102637840A/en

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    • 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 relates to an intelligent diving lithium battery pack with a pressure compensating device and a preparation method thereof, belonging to the field of lithium ions. A battery pack case is internally provided with a plurality of monomer lithium batteries connected in series and in parallel, a battery management system as well as a pressure compensating device consisting of a case, an oil filling valve, watertight sockets, a compensating leather bag, a check valve and a protective cover. Positive and negative lugs of each monomer lithium battery are provided with pole columns which are riveted on the lugs of the monomer lithium batteries through a riveting structure; the battery pack in the case is electrically connected by connecting busbars among the pole columns on the tops of the adjacent monomer batteries; the compensating leather bag is arranged above the case and surrounds a closed space together with the case; the periphery of the compensating leather bag is in a form of a gauffer; the check valve is arranged on the top of the compensating leather bag; and the storage battery case and the lithium batteries are free from appearance deformation and performance damage. The intelligent diving lithium battery pack has the advantages of long service life, high specific flow, high safety and low cost, and can meet the requirements for deep-diving equipment.

Description

Has intelligent lithium battery group of latent usefulness of pressure compensator and preparation method thereof
Technical field
The present invention relates to a kind of intelligent lithium battery group of latent usefulness, belong to technical field of lithium ion with pressure compensator.
Background technology
Deep-sea equipment: like bathyscaph, deep diving vehicle, deep-sea life-saving equipment, oil drilling equipment etc.; Usually need work under the deep sea pressure environment of hundreds of rice and even thousands of meters; Along with the increase of equipment submerged depth, the also corresponding increasing of pressure that battery pack is suffered.If according to traditional way, rely on to increase structural strength that the casing thickness of shell guarantees casing, sealing etc., will certainly increase the volume and weight of batteries, strengthen self energy resource consumption, thus the dynamic property of influence equipment and economy etc.
The underwater kit power supply mostly uses silver-colored MH secondary battery at present, and its useful life is only inferior surplus in the of 30, and maintenance cost is high, far can not satisfy long-life, high power, high safety, the instructions for use cheaply of equipment.Simultaneously, in use because of its inside is liquid electrolyte, when Battery case receives big external pressure, there is potential safety hazard in this battery.
Summary of the invention
The object of the invention:
Overcome tradition and dive with the deficiency of secondary accumulator battery technology with performance, provide a kind of long-life, height to make a gesture of measuring, high security, low cost can satisfy intelligent the diving of deep diving Equipment Requirement and use the lithium battery group.
Technical scheme of the present invention:. a kind of intelligent lithium battery group of latent usefulness with pressure compensator; It is characterized in that, comprising: the some series-parallel single lithium battery in casing and the casing, the battery management system in the casing and the pressure compensator of forming by casing, priming valve, watertight socket, compensation leather bag and unidirectional valve; The pole riveted structure that each single lithium battery top is installed with anode ear, negative electrode lug and is made up of lug, pole, brace, and the bus-bar that a plurality of cell positive and negative terminals are interconnected mutually;
The casing side is provided with communication watertight socket, power supply watertight socket, and bottom half is provided for filling in the past casing and the oily priming valve of discharging compensatory pressure; Said compensation leather bag is arranged on the casing top and surrounds a confined space with casing, is designed to the folded structure form around the compensation leather bag; Said unidirectional valve is arranged on the top of compensation leather bag.Said battery management system comprises dsp processor, voltage acquisition module, temperature collect module, power supply processing module, data access module and CAN communication module.
Said a kind of preparation method with intelligent lithium battery group of latent usefulness of pressure compensator is characterized in that, before single lithium battery side heat is compound; Take repeatedly to vacuumize; Vacuum pressure maintains-below the 0.08Mpa, and adopt compaction process repeatedly, pressure is controlled at 8kg/cm 2~12kg/cm 2, guarantee that the single lithium battery surface does not have the bubble that can touch;
Further, have the intelligent lithium battery group of latent usefulness of pressure compensator, also comprise: be installed in the interior some series-parallel single lithium battery of oil-filled casing, battery fixing bracket, connector, bus-bar etc.Adopt connector and rivet, single lithium battery lug and output pole are riveted together, realize the high current charge-discharge function.Said single lithium battery adopts polymeric system, through the special producing PROCESS FOR TREATMENT, processes pressure-resistance structure.
Further again, have the intelligent lithium battery group of latent usefulness of pressure compensator, also comprise: be installed in the compensatory pressure oil battery management system that is made by withstand voltage electronic devices and components.
Further, have the intelligent lithium battery group of latent usefulness of pressure compensator, also comprise: compensatory pressure oil, said compensatory pressure grease separation is with 12 alkyl benzene insulating oils of excellent performance.
Advantage of the present invention:
The present invention adopts withstand voltage novel lithium battery group, and that has significantly improved batteries recycles life-span, volume and weight specific energy, has promoted dynamic property, fail safe and the economy of equipment effectively.
Abandoned conventional tank structural design thinking, adopted the compensatory pressure device, the casing loss of weight is reached more than 30%.
Adopt the intelligent management battery pack; Realize functions such as on-line real time monitoring battery voltage, temperature, capacity, electric current; And fault detect, analysis, location and warning function, storage and management function, the fail safe that has significantly improved batteries with can be handling.
Simple for structure, assembling and easy to maintenance.
Description of drawings
Fig. 1 is a battery case profile organigram;
Fig. 2 is a monomer-polymer lithium battery sketch map, and a left side is a front view, and the right side is an end view;
Fig. 3 is cell riveted joint mode sketch map;
Fig. 4 is that battery pack is at the status architecture cutaway view that does not fill compensatory pressure oil;
Fig. 5 is full of the status architecture cutaway view of compensatory pressure oil under normal pressure for battery pack;
Fig. 6 is the battery pack status architecture cutaway view of compensatory pressure oil under high pressure;
Fig. 7 is the discharge curve of battery pack (ferric phosphate lithium cell) under high pressure conditions in the compensatory pressure oil.
Diagram: the 1-casing, 2-communication watertight socket, 3-power supply watertight socket, the 4-fastening bolt, the 5-protective cover, the 6-unidirectional valve, 7-compensates leather bag, 8-priming valve, 9-compensatory pressure oil, 10 single lithium battery, 11 single lithium battery poles.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified:
The present invention is based on principle: when the liquid pressurized in the pressure vessel, the size that is in each lip-deep some pressure of object in the liquid equates.Further, according to the transferability principle of power, as long as interior of articles does not have the space, object is the stressed equal and opposite in direction of any arbitrarily, and is in the opposite direction, and promptly making a concerted effort is zero.In other words, be in the object in the pressure fluid,, can not damaged by pressure as long as its inside does not have the space.
As shown in Figure 2, said single lithium battery 10 is withstand voltage novel polymeric objects system lithium battery, adopts lamination technology to process.The shell of said single lithium battery 10 is an aluminum-plastic composite membrane, and the top is provided with anode ear, negative electrode lug.In manufacture process, on the one hand,, take roll extrusion deburring technology in the die-cut and hot operation such as compound of both positive and negative polarity diaphragm, effectively control burr height below 6 microns, when preventing pressurized, the burr diaphragm produces internal short-circuit; On the other hand, adopt gel technique, make fully infiltration between electrolyte and the active material interface, effectively avoid having between the interface free liquid to exist.Further, before single lithium battery side heat is compound, take repeatedly to vacuumize (below vacuum pressure-0.08Mpa) and repeatedly compaction process (dull and stereotyped mold pressing, pressure is controlled at 8kg/cm 2~12kg/cm 2), withstand voltage properties is improved in the space of further eliminating inside battery.
Said pressure compensation oil 9 is selected 12 alkyl benzene insulating oils for use, has overcome employing conventional hydraulic oil (claiming pressure oil again) to the dissolving of single lithium battery 10 aluminum-plastic composite membrane shells and the harmful effect of corrosion and stress cracking.This insulating oil is one of minimum artificial oil of toxicity, has good electric and heat resistance, oxygen aging resistance, characteristics such as air-breathing property is better, dielectric strength height.
Said management system adopts withstand voltage electronic devices and components to be made, as: electrochemical capacitor adopts chip ceramic capacitor replacement etc.All components and parts welding on the control circuit board all adopt no lead-tin soldering to connect, to eliminate the catalysis burn-in effects of metallic lead to insulating oil.
As shown in Figure 1; Said metal cabinet 1; Its four walls and bottom surface all adopt metallic plate to be welded, and casing 1 set inside has the lithium battery group, and casing 1 side is provided with communication watertight socket 2; Casing 1 bottom surface is provided with priming valve 8, fills compensatory pressure oil 9 in the lithium battery case or compensatory pressure oil 9 is discharged through priming valve 8.
Said compensation leather bag 7, material are oil-resistant rubber material, are designed to the folded structure form around the leather bag, to increase compensation ability.Gauffer amount around the leather bag is by the quantity decision of compensation oil mass.Said unidirectional valve 6 is arranged on the top of compensation leather bag 7.
For protecting flexible compensation leather bag 7 not by the sealing of foreign matter scuffing and Battery case, the protective cover 5 that above compensation leather bag 7, also is provided with has many apertures on the protective cover 5, be in order to increase ventilative and weight reduction.
As shown in Figure 3, the output pole 11 of single lithium battery 10 adopts the riveted joint fastening means, and this riveted structure takes to be up and down brace, and lug is clipped in the middle.Rivet is riveted after brace, lug, brace pass successively.The advantage of riveted joint fastening means: contact resistance is little, good heavy current.
As shown in Figure 4; Under normal pressure; Each single lithium battery 10 that riveted joint is good is inserted respectively in the set draw-in groove of battery fixing bracket according to the connection in series-parallel order, and the positive and negative terminals 11 usefulness bus-bars with adjacent cell 10 connect again; Adopt the nut fastening means, the connection in series-parallel of accomplishing battery pack in the casing is electrically connected.
Management system is installed on the inwall of metal cabinet 1, uses screw lock.Detection line (voltage detecting line, temperature detection line) is welded on management system and the watertight socket 2 corresponding set splicing ears of communicating by letter, accomplishes testing circuit and connect; With power line be connected to respectively battery pack total just with total negative output pole on and on the power supply watertight socket 3 corresponding set splicing ears, and carry out fasteningly with nut, charge and discharge the connection of circuit with completion.
After electric wiring connect to be accomplished, can begin in Battery case 1, to fill compensatory pressure oil 9, during near the top of metal cabinet 1, stop oiling until oil level.Then, will compensate leather bag 7, protective cover 5 and metal shell 1 successively and assemble, and with fastening bolt 4 and nut check.
Open unidirectional valve 6 air-outs, connect filling conduit, open priming valve 8; Compensatory pressure oil 9 is annotated in continuation in Battery case 1, as shown in Figure 5, upwards heaves 5 ends of protective cover until compensation leather bag 7; And when unidirectional valve 6 is no longer emerged air, stop oiling, close unidirectional valve 6 and priming valve 8.For preventing to press excessive damage casing in the accumulator box, need once more priming valve 8 to be opened, a certain amount of compensatory pressure oil 8 discharges.
Along with the submerged depth increase of submersible, the external pressure that accumulator box receives strengthens gradually, because metal cabinet 1 and unidirectional valve 6 are rigid bodies; And compensation leather bag 7 very easily is out of shape for flexible material; Behind the pressurized, compensation leather bag 7 can begin past gradually lower recess (as shown in Figure 6) prior to the wall of metal cabinet 1 from the centre, compensatory pressure oil 9 pressurizeds in the accumulator box; Volume is compressed that (compensatory pressure oil can be compressed under the certain pressure environmental condition; Decrement probably is 7%~10%), and then press in producing, thereby the function of realization counteracted by pressure and pressure compensation.Because in this change procedure; Parts in casing 1 and the casing 1 are not participated in the variation of volume; The volume compression of compensatory pressure oil 9 partly is through remedying to lower recess behind compensation leather bag 7 pressurizeds, so storage battery casing 1 can not produce the damage of apparent distortion and performance with lithium battery 10.
When the come-up of submersible, the suffered hydraulic pressure of Battery case reduces gradually, and interior pressure also discharges gradually, and compensatory pressure oil 9 volumes recover gradually.When whole completion of submersible were floated, compensation leather bag 7 returned to the initial condition under the normal pressure as shown in Figure 5 again.
The present invention is through the withstand voltage test (the test pressing speed increased progressively with 5Mpa/10 minute) of 78Mpa (being equivalent under 7950 meters water depth pressure); When pressure reached 50Mpa, battery pack began discharge, then; Take to pressurize the on one side mode of an edge discharge; When pressure reaches 78Mpa, stop pressurization, and under this pressure, battery pack discharged fully finish test.After the off-test, battery pack and storage battery casing on inspection, well-tended appearance, discharge curve is as shown in Figure 7.

Claims (3)

1. intelligent lithium battery group of latent usefulness with pressure compensator; It is characterized in that, comprising: some series-parallel single lithium battery and battery management system and the pressure compensator formed by casing, priming valve, watertight socket, compensation leather bag, unidirectional valve and protective cover in the casing;
The positive and negative lug of said single lithium battery is provided with pole, and pole is riveted on the set lug of single lithium battery through riveted structure; Battery pack is electrically connected then through connecting completion with bus-bar between the set pole in adjacent monomer battery top in the casing;
Said casing side is provided with communication watertight socket and power supply watertight socket, and bottom half is provided for filling in the past casing and the oily priming valve of discharging compensatory pressure;
Said compensation leather bag is arranged on the casing top, and surrounds a confined space with casing, is designed to the folded structure form around the compensation leather bag; Said unidirectional valve is arranged on the top of compensation leather bag;
Said battery management system comprises dsp processor, voltage acquisition module, temperature collect module, power supply processing module, data access module and CAN communication module.
2. a kind of intelligent lithium battery group of latent usefulness with pressure compensator according to claim 1 is characterized in that said compensatory pressure grease separation is with 12 alkyl benzene insulating oils.
3. a kind of preparation method with intelligent lithium battery group of latent usefulness of pressure compensator according to claim 1 is characterized in that, before single lithium battery side heat is compound, take repeatedly to vacuumize, vacuum pressure-below the 0.08Mpa; And adopt compaction process repeatedly, pressure is controlled at 8kg/cm 2~12kg/cm 2Between, guarantee that the single lithium battery surface does not have the bubble that can touch.
CN2012101074338A 2012-04-12 2012-04-12 Intelligent diving lithium battery pack with pressure compensating device and preparation method thereof CN102637840A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103280545A (en) * 2013-06-17 2013-09-04 长沙矿冶研究院有限责任公司 Deep-water battery box
CN103325965A (en) * 2013-06-26 2013-09-25 北京先驱高技术开发公司 Deep-sea high-power lithium battery device and manufacturing method thereof
CN103700793A (en) * 2013-12-26 2014-04-02 北京神州远望科技有限公司 Lithium battery pack with automatic deep water pressure compensation function
CN104538570A (en) * 2015-01-12 2015-04-22 戴国群 Novel pressure resisting polymer lithium battery pack for underwater vehicle
CN105591045A (en) * 2014-11-10 2016-05-18 福特全球技术公司 Battery assembly including structural foamed materials
CN107589376A (en) * 2017-08-10 2018-01-16 上海交通大学 The deep pressure battery performance test device in the full sea of simulation and method
DE102017119115A1 (en) 2017-08-22 2019-02-28 Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung Pressure-neutral battery for use in the deep sea

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CN201681977U (en) * 2010-03-30 2010-12-22 中国船舶重工集团公司第七〇二研究所 Compensating bag type storage battery box for deep submergence vehicles
CN102130365A (en) * 2011-01-30 2011-07-20 康图强 Laminated type lithium battery core body with extremely high bearing capacity and packaging technique
US20110307202A1 (en) * 2010-06-15 2011-12-15 Saft System for monitoring the state of a battery
CN102339969A (en) * 2011-09-29 2012-02-01 北京神州远望科技有限公司 Intelligent power lithium battery module
EP2416468A2 (en) * 2010-08-05 2012-02-08 E4V Method for balancing a battery and battery management system implementing such a method

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JPS5893174A (en) * 1981-11-26 1983-06-02 Toshiba Corp Fuel cell
JP2001196037A (en) * 2000-01-11 2001-07-19 Yuasa Corp Pressure-proof non-aqueous electrolyte battery
CN101299387A (en) * 2008-03-11 2008-11-05 徐文 Combined high-tension current potential transformer
CN101651227A (en) * 2009-08-31 2010-02-17 山东神工电池新科技有限公司 High lifetime water-soluble lithium battery and preparation process thereof
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103280545A (en) * 2013-06-17 2013-09-04 长沙矿冶研究院有限责任公司 Deep-water battery box
CN103280545B (en) * 2013-06-17 2015-07-15 长沙矿冶研究院有限责任公司 Deep-water battery box
CN103325965A (en) * 2013-06-26 2013-09-25 北京先驱高技术开发公司 Deep-sea high-power lithium battery device and manufacturing method thereof
CN103325965B (en) * 2013-06-26 2015-07-15 北京先驱高技术开发公司 Deep-sea high-power lithium battery device and manufacturing method thereof
CN103700793A (en) * 2013-12-26 2014-04-02 北京神州远望科技有限公司 Lithium battery pack with automatic deep water pressure compensation function
CN105591045A (en) * 2014-11-10 2016-05-18 福特全球技术公司 Battery assembly including structural foamed materials
CN105591045B (en) * 2014-11-10 2020-12-11 福特全球技术公司 Battery assembly including structural foam
CN104538570A (en) * 2015-01-12 2015-04-22 戴国群 Novel pressure resisting polymer lithium battery pack for underwater vehicle
CN107589376A (en) * 2017-08-10 2018-01-16 上海交通大学 The deep pressure battery performance test device in the full sea of simulation and method
DE102017119115A1 (en) 2017-08-22 2019-02-28 Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung Pressure-neutral battery for use in the deep sea
WO2019037812A1 (en) 2017-08-22 2019-02-28 Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung Pressure-neutral battery for use in the deep sea

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