CN102593509A - High-capacity square lithium ion battery - Google Patents
High-capacity square lithium ion battery Download PDFInfo
- Publication number
- CN102593509A CN102593509A CN2012100519809A CN201210051980A CN102593509A CN 102593509 A CN102593509 A CN 102593509A CN 2012100519809 A CN2012100519809 A CN 2012100519809A CN 201210051980 A CN201210051980 A CN 201210051980A CN 102593509 A CN102593509 A CN 102593509A
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- lithium ion
- ion battery
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- metallic conduit
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a high-capacity square lithium ion battery and belongs to the technical field of lithium ion battery manufacturing. The high-capacity square lithium ion battery is characterized by comprising a plastic outer shell and a battery cell, wherein the battery cell is accommodated in the shell and is of a lamination structure; a heat-eliminating medium circulation metal pipeline is coated in the side wall of the plastic outer shell; a top cover of the plastic outer shell is provided with an anode pole, a cathode pole and a pressure relief device; the metal pipeline, the anode pole, the cathode pole and the plastic outer shell are compounded; the metal pipeline is of a tubular structure and is provided with an inlet and an outlet; and the battery cell is formed by stacking up an anode plate, a diaphragm and a cathode plate. According to the high-capacity square lithium ion battery, the plastic outer shell of which the side wall is provided with the heat-eliminating medium circulation metal pipeline and the battery cell which is of the lamination structure are adopted, so that the heat-eliminating capacity and the deformation resistance are enhanced when the high-capacity square lithium ion battery works at high current, the temperature distribution uniformity and the safety of different parts in a unit battery and different units in a battery module are improved, the service lives of the unit battery and the battery module are prolonged, and the use cost of the lithium ion battery is reduced.
Description
Technical field
The present invention relates to a kind of lithium ion battery, particularly relate to a kind of big capacity rectangular lithium ion battery.
Background technology
At present, along with energy-saving and emission-reduction policy execution and energy crisis aggravation influence, lithium ion battery has broad prospect of application with its good charge-discharge characteristic, high security and stable circulation performance in fields such as electrical network energy storage, wind energy, solar energy, military affairs.But during used in above-mentioned field, lithium ion battery discharged and recharged the power height, under present existing material system and production technology, had increase cell capacity only to reduce the requirement of the bigger multiplying power operating current of monomer lithium ion battery; Large capacity single body lithium ion battery is being worked under big current condition because size is bigger, and especially cylinder winding-structure large capacity single body lithium ion battery will produce and more manys heat than being equal to the square lamination monomer of capacity lithium ion battery; Although battery module is installed the wind-cooling heat dissipating device, because heat conductivity of gas is low, and gas flows inhomogeneous in the battery outer wall surface; Convection transfer rate is little; Heat is difficult to distribute, and the inner different monomers lithium ion battery of monomer inside lithium ion cell different parts and battery module portion temperature heterogeneity distributes long-time load operation; This temperature heterogeneity can cause serious potential safety hazard; Reduce large capacity single body battery and battery module useful life, increase battery and battery module use cost, be unfavorable for high capacity lithium ion battery marketization application.
Summary of the invention
Quantity of heat production height, heat are difficult to distribute when using under the high current charge-discharge situation in order to overcome high capacity lithium ion battery; The inner different monomers lithium ion battery of monomer inside lithium ion cell different parts and battery module temperature heterogeneity distributes; Thereby increase potential safety hazard, the cell deficiency in useful life that reduces, the present invention provides the coated big capacity rectangular lithium ion battery of moulding system shell body and lamination electricity core formation that heat eliminating medium circulation metallic conduit is arranged in a kind of sidewall.
The technical solution adopted for the present invention to solve the technical problems is following:
A kind of big capacity rectangular lithium ion battery comprises the electric core of moulding the system shell body and being contained in lamination in the housing;
Described moulding coatedly in the system shell body sidewall has a heat eliminating medium circulation metallic conduit;
The described system shell body housing top cover of moulding is installed Positive Poles, negative pole pole and pressure relief device;
Described heat eliminating medium circulation metallic conduit is wrapped in fully to be moulded in the system shell body sidewall, and metallic conduit bending back and forth is a tubular structure, has import and outlet;
Circulate metallic conduit, Positive Poles and negative pole pole of the described system of moulding shell body and heat eliminating medium is composited, and contact-making surface closely contacts;
Described electric core is cascaded by positive plate, barrier film, negative plate.
In above-mentioned technical scheme, moulding system shell body sidewall thickness is 1mm-100mm, and material is PP, PE.
In above-mentioned technical scheme, Positive Poles, negative pole pole are overall structure.
In above-mentioned technical scheme; The quantity of heat eliminating medium circulation metallic conduit is the 1-100 root; The metallic conduit cross sectional shape is circular, square, triangle, and pipe thickness is 0.1mm-10mm, and metallic conduit outer wall caliber is 1mm-100mm; Material is aluminium alloy, copper alloy, nickel alloy, and respectively there is a controlled valve in the import of each root pipeline and exit.
In above-mentioned technical scheme, heat eliminating medium is liquid under 10-60 ℃, 0.1Mpa condition.
In above-mentioned technical scheme, positive plate, negative plate be through cross cutting or punching molding, on pole piece drainage terminal and the housing top cover Positive Poles, negative pole pole adopt riveted joint, welding perhaps bolted be connected.
In above-mentioned technical scheme, pressure relief device can be dismantled, and is pressed in 0.5Mpa in the housing when above, and pressure relief device begins pressure release.
The invention has the advantages that:
1, adopt lamination electricity core battery under identical big electric current service condition, to adopt winding-structure electricity core battery heat generation low than equal capacity; Moulding coatedly in the system shell body sidewall has a heat eliminating medium circulation metallic conduit; The liquid heat eliminating medium big through convection transfer rate, that thermal conductivity is high can strengthen the vast capacity lithium ion battery and discharge and recharge heat-sinking capability; Improve the inner different monomers lithium ion battery of high power capacity monomer inside lithium ion cell different parts and battery module temperature distribution evenness; Prolong cell and battery module useful life, greatly reduce the high capacity lithium ion battery use cost.
2, the system of moulding shell body and metallic conduit can composite molding; Processing method is simple; Metallic conduit intensity is high, can increase the high capacity lithium ion battery non-deformability, moulds the corrosion of system shell body electrolyte resistance simultaneously; Improve battery safety, promote high capacity lithium ion battery marketization application in fields such as electrical network energy storage, wind energy, solar energy, military affairs.
Description of drawings
Fig. 1 is an embodiment of the invention surface structure sketch map.
Fig. 2 is an embodiment of the invention interior structural representation.
Fig. 3 is an embodiment of the invention pole sketch map.
Fig. 4 is an embodiment of the invention pole piece sketch map.
The drawing explanation
1-housing top cover 2-negative pole pole 3-pressure relief device 4-Positive Poles
5-electricity core 6-sidewall 7,8-metallic conduit import 9, the outlet of 10-metallic conduit
11-controlled valve 12-pole top cylinder 13-square platform 14-connects platform
15-drainage terminal
Embodiment
Below in conjunction with accompanying drawing and embodiment to further explain of the present invention:
Make the square lamination lithium ion battery of 1000Ah LiFePO4, it is PP that battery is moulded system shell body material, and apparent size thickness is 120mm, and width is 455mm, highly is 400mm, and sidewall 6 thickness are 20mm, and housing top cover 1 thickness is 10mm.Heat eliminating medium circulation metallic conduit material is an aluminium alloy, and the cross section is circular, and wall thickness is 1mm; The outer wall caliber is 10mm, arranges for shell and tube, and metallic conduit quantity is two; Lay respectively at rectangular cell and mould in the system shell body sidewall 6, heat eliminating medium metallic conduit import 7,8 is positioned at Positive Poles 4 one sides, and heat eliminating medium metallic conduit outlet 9,10 is positioned at battery and moulds system shell body bottom; Metallic conduit is imported and exported and is respectively equipped with controlled valve 11, to guarantee heat eliminating medium no leakage in the battery metal pipeline.Mould system shell body and metallic conduit through the once-combined moulding of mould.
Positive Poles 4 materials are fine aluminium, and negative pole pole 2 materials are red copper, and structure is shown in Figure 3, pole top cylinder 12 diameter 48mm, and the machining internal thread M16 of cylindrical center is convenient to monomer and is formed battery module through outer bolt; The pole middle part is a square platform 13, and the length and width height all is 50mm, and thickness is 4mm, is convenient to pole and moulds system shell body housing top cover 1 combined tessera; The pole bottom is a connection platform 14, long 160mm, and wide 40mm, high 30mm is processed with two through holes on the connection platform, and diameter 6mm is convenient to pole and electric core 5 interconnects.
Mould system shell body housing top cover 1 and pass through the once-combined moulding of mould with Positive Poles 2, negative pole pole 4.
Electricity core 5 adopts positive plate, barrier film, negative plate to cascade; Positive and negative plate passes through shape by die-cutting; Planform is shown in Figure 4; Pole piece top is drainage terminal 15, and the through hole that to be processed with two diameters be 6mm, and positive and negative plate drainage terminal 15 closely connects through passing the outside fastening bolt that is connected platform 14 through holes with pole.
Moulding system shell body housing top cover 1 passes through to cure under pressure after the contact-making surface heat fused with sidewall 6; Reach the connection sealing purpose, mould system shell body housing top cover 1 pressure relief device 3 is installed, when cell internal pressure when 0.5Mpa is above; Pressure relief device 3 beginning pressure release exhausts improve battery security.
The present embodiment heat eliminating medium is employed in and is liquid cold oil under 10-60 ℃, 0.1Mpa condition; When monomer 1000Ah battery or battery module are worked under 8C-15C rate charge-discharge electricity condition, open the metallic conduit switch respectively and import and export controlled valve 11, because the cold oil thermal conductivity is high; Convection transfer rate is big; And in battery sidewall 6, evenly flow, battery produces heat and can in time take away, and different monomers lithium ion battery temperature is below 50 ℃ in inner different parts of maintenance 1000Ah cell and the battery module; Different monomers maximum temperature and minimum temperature difference are less than 5 ℃ in the while battery module; Uniformity of temperature profile in the useful life of prolongation high-capacity battery and battery module, reduces use cost.
Present embodiment Al-alloy metal pipeline strength is high, can increase battery sidewall 6 non-deformabilities, improves battery safety.
Claims (7)
1. one kind big capacity rectangular lithium ion battery is characterized in that: comprise the electric core of moulding the system shell body and being contained in lamination in the housing;
Described moulding coatedly in the system shell body sidewall has a heat eliminating medium circulation metallic conduit; The described system shell body housing top cover of moulding is installed Positive Poles, negative pole pole and pressure relief device; Described heat eliminating medium circulation metallic conduit is wrapped in fully to be moulded in the system shell body sidewall, and metallic conduit bending back and forth is a tubular structure, and has import and outlet; Circulate metallic conduit, Positive Poles and negative pole pole of the described system of moulding shell body and heat eliminating medium is composited, and contact-making surface closely contacts; Described electric core is cascaded by positive plate, barrier film, negative plate.
2. big capacity rectangular lithium ion battery according to claim 1 is characterized in that: described to mould system shell body sidewall thickness be 1mm-100mm, and material is PP, PE.
3. big capacity rectangular lithium ion battery according to claim 1 is characterized in that: described Positive Poles, negative pole pole are overall structure.
4. big capacity rectangular lithium ion battery according to claim 1; It is characterized in that: the quantity of described heat eliminating medium circulation metallic conduit is the 1-100 root; The metallic conduit cross sectional shape is circular, square, triangle, and pipe thickness is 0.1mm-10mm, and metallic conduit outer wall caliber is 1mm-100mm; Material is aluminium alloy, copper alloy, nickel alloy, and there is a controlled valve in the import of every pipeline and exit.
5. big capacity rectangular lithium ion battery according to claim 1 is characterized in that: described heat eliminating medium under 10-60 ℃, 0.1Mpa condition for liquid.
6. big capacity rectangular lithium ion battery according to claim 1; It is characterized in that: described positive plate, negative plate be through cross cutting or punching molding, on pole piece drainage terminal and the housing top cover Positive Poles, negative pole pole adopt riveted joint, welding perhaps bolted be connected.
7. big capacity rectangular lithium ion battery according to claim 1, it is characterized in that: described pressure relief device can be dismantled, and inner pressure of battery is when 0.5Mpa is above, and pressure relief device begins the pressure release exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100519809A CN102593509A (en) | 2012-02-28 | 2012-02-28 | High-capacity square lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100519809A CN102593509A (en) | 2012-02-28 | 2012-02-28 | High-capacity square lithium ion battery |
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| CN102593509A true CN102593509A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100519809A Pending CN102593509A (en) | 2012-02-28 | 2012-02-28 | High-capacity square lithium ion battery |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633263A (en) * | 2013-11-07 | 2014-03-12 | 许玉林 | Lithium battery pack housing |
| EP3264519A4 (en) * | 2015-09-18 | 2018-08-15 | LG Chem, Ltd. | Battery pack |
| CN109301256A (en) * | 2017-06-28 | 2019-02-01 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860605A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860612A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860611A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860906A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of thermal conductivity lithium ion battery |
| CN109860616A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860853A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of thermal conductivity lithium ion battery |
| CN109860620A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860606A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860619A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860607A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860608A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109873169A (en) * | 2017-06-28 | 2019-06-11 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109950434A (en) * | 2017-12-20 | 2019-06-28 | 郑州宇通客车股份有限公司 | A kind of hard shell battery and its battery case |
| CN110148756A (en) * | 2017-06-28 | 2019-08-20 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN110148755A (en) * | 2017-06-28 | 2019-08-20 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN110148804A (en) * | 2017-06-28 | 2019-08-20 | 湖南妙盛汽车电源有限公司 | A kind of thermal conductivity lithium ion battery |
| CN110176565A (en) * | 2019-05-28 | 2019-08-27 | 广东利元亨智能装备股份有限公司 | The assemble method of battery core mould group and battery core mould group |
| CN110176605A (en) * | 2017-06-28 | 2019-08-27 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN112366365A (en) * | 2020-01-16 | 2021-02-12 | 万向一二三股份公司 | Thermal composite laminated soft package lithium ion battery and preparation method thereof |
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| CN201570566U (en) * | 2010-01-26 | 2010-09-01 | 浙江戴尔维动力电池系统有限公司 | Cooling structure of lithium battery module |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633263A (en) * | 2013-11-07 | 2014-03-12 | 许玉林 | Lithium battery pack housing |
| CN103633263B (en) * | 2013-11-07 | 2016-05-25 | 苏州安靠电源有限公司 | A kind of lithium battery incrustation |
| EP3264519A4 (en) * | 2015-09-18 | 2018-08-15 | LG Chem, Ltd. | Battery pack |
| US10454081B2 (en) | 2015-09-18 | 2019-10-22 | Lg Chem, Ltd. | Battery pack |
| CN109860619A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860607A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860611A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860906A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of thermal conductivity lithium ion battery |
| CN109860616A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860853A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of thermal conductivity lithium ion battery |
| CN109860620A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860606A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860605A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860612A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109860608A (en) * | 2017-06-28 | 2019-06-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109873169A (en) * | 2017-06-28 | 2019-06-11 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109301256A (en) * | 2017-06-28 | 2019-02-01 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN110148756A (en) * | 2017-06-28 | 2019-08-20 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN110148755A (en) * | 2017-06-28 | 2019-08-20 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN110148804A (en) * | 2017-06-28 | 2019-08-20 | 湖南妙盛汽车电源有限公司 | A kind of thermal conductivity lithium ion battery |
| CN110176605A (en) * | 2017-06-28 | 2019-08-27 | 湖南妙盛汽车电源有限公司 | A kind of lithium-ion-power cell |
| CN109950434A (en) * | 2017-12-20 | 2019-06-28 | 郑州宇通客车股份有限公司 | A kind of hard shell battery and its battery case |
| CN110176565A (en) * | 2019-05-28 | 2019-08-27 | 广东利元亨智能装备股份有限公司 | The assemble method of battery core mould group and battery core mould group |
| CN112366365A (en) * | 2020-01-16 | 2021-02-12 | 万向一二三股份公司 | Thermal composite laminated soft package lithium ion battery and preparation method thereof |
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Application publication date: 20120718 |