GB2483803A - Battery unit with self-sealing capability - Google Patents
Battery unit with self-sealing capability Download PDFInfo
- Publication number
- GB2483803A GB2483803A GB1116132.0A GB201116132A GB2483803A GB 2483803 A GB2483803 A GB 2483803A GB 201116132 A GB201116132 A GB 201116132A GB 2483803 A GB2483803 A GB 2483803A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sealing layer
- cell
- battery
- unit according
- unit
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 81
- 239000012858 resilient material Substances 0.000 claims abstract 2
- 239000003792 electrolyte Substances 0.000 claims description 9
- 230000035515 penetration Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 229910006025 NiCoMn Inorganic materials 0.000 description 1
- QTJOIXXDCCFVFV-UHFFFAOYSA-N [Li].[O] Chemical compound [Li].[O] QTJOIXXDCCFVFV-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H01M2/02—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Portable Power Tools In General (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
A battery unit (10), particularly for a handtool comprises a plurality of battery cells (18) in a housing element (22). The cells (18) are protected by at least one sealing layer, preferably an individual sealing layer (14a) surrounding each cell and a further sealing layer (12) at the inside of the housing element (22), of resilient material. The sealing layer or layers Is or are constructed and arranged so that in the event of an opening (16) caused by a damaging object (42) the opening is at least substantially sealed off by return deformation of the affected layer.
Description
I
BATTERY UNIT WITH SELF-SEALING CAPABILITY
The present invention relates to a battery unit, for example for a handtool.
A battery unit with a housing and several battery cells is known from DE 44 44 029 Al.
Battery units are susceptible to mechanical damage by external force, for example accidental penetration by a sharp object or cracking due to a crushing force, and this can lead to escape of substances from damaged cells. It would therefore be desirable to prevent or reduce the risk of substance escape in such circumstances.
According to the present invention there is provided a battery unit, especially a handtool battery unit, with at least one sealing layer, the sealing layer being provided for the purpose of automatically at least substantially sealing off a damage opening by a return deformation.
By "sealing layer' there is to be understood, for example, an element which during and advantageously after damage causing a damage opening at least substantially prevents issue of a fluid, particularly an electrolyte. The sealing layer may advantageously at least substantially prevents escape from a container into, for example, a region with an electronic system and/or a region contactable by a user. The sealing layer preferably has a surface which is greater than 5 square centimetres, particularly greater than 10 square centimetres. The sealing layer is preferably formed by a sealing ring, for example an 0-*. .** * ring. By "sealing ring" or "0-ring" there is to be understood, for example, sealing means having a ratio of radial length, particularly along an axis of rotational symmetry, to an axial *** . length of more than 5, advantageously more than 10. By "provided" there is to be S understood, for example, specially designed and/or equipped. By "return deformation" there is to be understood, for example, a movement of at least a part of the sealing layer in a direction in which the part of the sealing layer was arranged in front of a damage opening. The part of the sealing layer preferably moves at least 50%, advantageously at least 80%, particularly advantageously at least 90%, back over a path in which the part was moved during the process of damage. By "damage opening" there is to be understood, for example, an unintended and, especially, non-functional opening such as in a container storing a battery fluid, for example the electrolyte. The sealing layer preferably at least substantially seals off a damage opening which extends at least through the container and the sealing layer. Such an opening could arise through penetration of a pointed object, for example a nail, through at least the sealing layer and the container.
The sealing layer can also seal off the container after removal of the pointed object. By the term "automatically" there is to be understood, for example, that the sealing layer seals off the damage opening independently of changes by external influences independent of penetration and removal of an object causing damage. By "at least substantially sealing off' there is to be understood, for example, that the sealing layer reduces an effective cross-section of the damage opening, through which fluid can escape, by at least 75%, advantageously at least 90%, particularly advantageously at least 99%. The sealing layer preferably prevents escape of a liquid, particularly preferably a gas, preferably escape at a rate of more than 10% of the fluid concerned in less than an hour, advantageously less than 24 hours. A particularly high level of safety for a user in the case of damage can be achieved with such a battery unit. The sealing layer can preferably also seal off damage due to a crushing force, for example cracks. Escape of chemicals from the battery unit and a risk of fire can thereby be avoided.
In a preferred embodiment the sealing layer comprises a rubber-elastic material, whereby a particularly advantageous sealing effect can be achieved in constructionally simple manner. By "rubber-elastic material" there is to be understood, for example, a rubber, a silicon, a natural rubber, a synthetic rubber, an elastomer, a latex and/or any other material appearing feasible to the expert. The rubber-elastic material preferably has a modulus of elasticity of less than 0.5 kN/mm2, advantageously less than 0.2 kN/mm2, particularly advantageously less than 0.1 kN/mm2, and an elongation at tear of more than 50%, *�t.s.
* : advantageously more than 100%, particularly advantageously more than 200%.
* St*.s * p The battery unit preferably comprises a battery cell which is surrounded by the sealing layer surrounds at least in the manner of a jacket, whereby a particularly effective protection can be achieved. By "battery cell" there is to be understood, for example, a component which is intended for the purpose of storing energy and delivering it as * S *1 electrical power. The battery cell is preferably a lithium battery cell, a fuel cell and/or other * S battery cell appearing feasible to the expert. By "lithium battery cell" there is to be understood, for example, a lithium-ion battery cell, an LiFePO4 battery cell, an LiMn2O4 battery cell, an Li(NiCoMn)02 battery cell, an Li(NiC0AI)02 battery cell, a lithium-oxygen battery cell, a lithium-sulphur battery cell, a lithium-polymer battery cell, etc. By the expression "surround in the manner of a jacket" there is to be understood, for example, that the sealing layer surrounds the battery cell on at least one plane through 360 degrees.
Alternatively, the sealing layer could surround the battery cell only on an outer side, i.e. encloses it on a side facing an outer wall of the battery unit. The sealing layer preferably surrounds the battery cell along a main dimension thereof on a path of at least 10 millimetres, advantageously at least 20 millimetres, in the manner of a jacket, and especially on planes oriented perpendicularly to the main dimension. The sealing layer preferably surrounds the battery cell in the manner of a cylindrical jacket, i.e. with a circular cross-section.
In addition, the battery unit preferably comprises a battery cell with a cell housing against which the sealing layer bears -especially directly -at least in part, whereby a particularly advantageous sealing effect can be achieved in constructionally simple manner. By "cell housing" there is to be understood, for example, a firm encasing of the battery cell. The cell housing preferably forms at least a part of the container storing the fluid and preferably fastens an anode and a cathode of the battery cells. By "bearing against at least in part" there is to be understood, for example, that the cell housing and the sealing layer have a contact area which is greater than 1 square centimetre, advantageously greater than 2 square centimetres. The sealing layer is preferably -particularly inwardly and/or advantageously outwardly -tightened around, glued to or shrunk into place on at the cell housing and/or bears thereagainst in another manner appearing feasible to the expert.
Moreover, the battery unit preferably comprises a housing element which fastens at least one battery cell and against which the sealing layer bears -especially directly -at least in * S. S* * part, whereby several battery cells can be sealed off in constructionally simple manner. By "housing element" there is to be understood, for example, a means which fastens at least one battery cell directly and/or indirectly. The housing element preferably fastens at least two battery cells. Advantageously, the housing element comprises a coupling means for fastening to a device to which the battery unit delivers energy in at least one operating state.
%S S 0 *S SI : * In a preferred construction the sealing layer bears at least partly against an outer side of the cell housing, whereby a particularly good sealing effect with simple mounting can be achieved. In particular, battery cells which are present can be protected in constructionally simple manner. By "outer side of a cell housing" there is to be understood a side remote from a centre point of the battery cell. Alternatively or additionally the sealing layer could bear at least in part against an outer side of the housing element.
The battery cell can comprise a combustible electrolyte, whereby a particularly large amount of energy can be stored economically and with low weight. By "combustible" there is to be understood, for example, that the electrolyte is inflammable at least in accordance with the European Community guideline RL 67/548/EEC, preferably readily inflammable.
By "electrolyte" there is to be understood, in particular, a means for storing an energy to be electrically extractable. Alternatively or additionally, the electrolyte could be corrosive or toxic.
The sealing layer is preferably strip-shaped, whereby particularly simple mounting is possible. By the term "strip-shaped" there is to be understood, for example, that the sealing layer has, with a small thickness, a length-to-width ratio greater than three, advantageously greater than six. By "small thickness" there is to be understood, for example, that the thickness is less than the length and the width. The sealing layer is preferably thinner than 5 millimetres, particularly preferably thinner than 2 millimetres.
The invention also relates to a system comprising a handtool and a battery unit, wherein all handtools appearing feasible to the expert such as drills, hammer drills, saws, planers, screwdrivers, millers, grinders, angle grinders, garden tools, measuring tools and/or multi-function tools are conceivable for operation by a battery unit, whereby a particularly safe system can be provided. Alternatively or additionally to use in a handtool the battery unit can be used in motor vehicles, hybrid vehicles, electric vehicles, electric scooters, electric motorcycles, model construction and other areas appearing feasible to the expert.
Preferred embodiments of the present invention will now be more particularly described * with reference to the accompanying drawings, in which: * * Fig. 1 is a perspective view of a handtool equipped with a battery unit embodying the *0:. invention; * * Fig. 2 is a horizontal section, to enlarged scale, of the battery unit of Fig. 1; 0l* * S *5S5 Fig. 3 is a detail sectional view of a battery cell of the battery unit with a damage opening; * Fig. 4 is a vertical section of the battery unit of Fig. 1; Fig. 5 is a perspective view of a battery cell, in isolation of the battery unit of Fig. 1, together with a sealing layer of the unit; and Fig. 6 is a view similar to Fig. 5, but with a variant sealing layer.
Referring now to the drawings there is shown in Fig. 1 a system 30 comprising a handtool 32 and a handtool battery 34. The handtool 32 is constructed as a battery-operated drill/impact-screwdriver. It comprises a pistol-shaped housing 36 with a main handle 38.
The handtool battery 34 in an operationally ready state is separably connected with the handle 38 by a user and, in particular, in this embodiment on a side of the handle 38 remote from a tool chuck 40 of the handtool 32. Alternatively, the handtool 32 and the battery 34 could be non-separably connected by a user.
Figs. 2 and 4 show sections and Fig. 3 a part section through the battery 34. The battery 34 comprises a battery unit 10. The battery unit 10, here constructed as a handtool battery unit. The battery unit 10 comprises an outer sealing layer 12 and inner sealing layers 14a, battery cells 18 and a housing element 22. The housing element 22 and further elements, which appear feasible to the expert and are not shown in more detail, fasten the battery cells 18. The outer sealing layer 12 and the inner sealing layers 14a automatically seal, by a return deformation, a damage opening 16 during and after damage. The process of damage by a penetrating pointed object 42 and the opening 16 are illustrated in Fig. 2.
One of the battery cells 18 is illustrated in isolation free state in Fig. 5. The battery cells 18 each comprise a cell housing 20 and a combustible electrolyte 28. The cell housings 20 each form a container for the electrolyte 28. The damage opening 16 represents an unintended opening in at least one of the cell housings 20. As illustrated, the sealing layers 12, 14a and the housing element 22 can also include part of the opening 16. The opening 16 can be caused, for example, by penetration and subsequent removal of the pointed object 42 into one of the cell housings 20 and also through the housing element 22 and the sealing layers 12, 14a. ** * * * * *
The sealing layers 12, 14a each comprise rubber-elastic material. When damage occurs, one or more of the sealing layers 12, 14a bears against the object 42 causing the damage and seals or seal the cell housing 20 along the object 42. On removal of the object 42 the sealing layer or layers 12, 14a concerned deforms or deform back to an original shape and thereby closes or close the opening 16.
For that purpose the inner sealing layers 14a each tightly bear against an outer side 24 of a respective one of the cell housings 20. The inner sealing layers 14a surround the cell housings 20 in the manner of a jacket on planes oriented perpendicularly to a main dimension of one of the battery cells 18. When damage occurs the sealing layers 14a are substantially resiliently deformed. A force which moves a part of the sealing layers 14a back into an original position thereby arises. In that case the sealing layers 14a reduce the size of the damage opening 16. Through an appropriate design and, in particular, a prestress of the sealing layers 14a the opening 16 is usually completely closed provided it does not exceed a maximum size.
The outer sealing layers 12 bear tightly against the housing element 22 at an inner side 26a thereof. For that purpose, the outer sealing layer is injection-moulded in the housing element 22. Since the handtool battery 34 in an operationally ready state is, on a side facing the handtool, protected by this, this side is free from a sealing layer. Alternatively or additionally an outer sealing layer could bear against an outer side and/or advantageously completely surround several battery cells, particularly all battery cells.
The housing element 22 is of two-part construction. The two parts are screw-connected together (not illustrated). Arranged between the parts of the housing elements 22 is an 0-ring 44 which prevents penetration of dirt and moisture into the handtool battery 34. The 0-ring 44 is constructed separately from the sealing layers 12, 14a.
S
*55555 * Part of a further embodiment is shown in Fig. 6, which shows a battery cell 18 with a * *.** * variant sealing layer 14b of strip-shaped construction. The sealing layer 14b is wound in the manner of a jacket around the cell housing 20 of the battery cell 18. S... * * S... p. * * . . p *
Claims (11)
- CLAIMS1. A battery unit provided with at least one sealing layer which is deformable under formation of a damage opening at the unit and which by return deformation automatically substantially seals off the opening.
- 2. A unit according to claim 1, wherein the sealing layer comprises resilient material.
- 3. A unit according to claim 1 or claim 2, comprising a battery cell and the sealing layer surrounds the cell at least in the manner of a jacket.
- 4. A unit according to any one of the preceding claims, comprising a battery cell with a cell housing and the sealing layer bears at least in part against the cell housing.
- 5. A unit according to any one of the preceding claims, comprising a housing element fastening at least one battery cell of the unit, the sealing layer bearing at least in part against the housing element.
- 6. A unit according to claim 4, wherein the sealing layer bears at least in part against an outer side of the cell housing.
- 7. A unit according to any one of claims 3 to 5, wherein the cell comprises a combustible electrolyte.
- 8. A unit according to any one of the preceding claims, wherein the sealing layer is * strip-shaped. * SS* .5555 *
- 9. A unit according to any one of the preceding claims, wherein the sealing layer is in engagement with and extends around a battery cell or at least one battery cell of the unit so as to be penetrated by any intruding object penetrating the cell from outside the unit and the sealing layer is constructed to sealingly engage the penetrating object and to seal 555. . . * s off any opening formed in the cell by the object penetration. 5S 55 * . S*
- 10. A handtool provided with a battery unit according to any one of the preceding claims.
- 11. A sealing layer for a battery unit according to any one of the preceding claims, the sealing layer being deformable under formation of a damage opening at the unit and being automatically deformable in a reverse sense to substantially seal off the opening.U *.. U * UU* U* U* * U *U.. * U U ** U U.S. * S *UU. U. **U S U * U
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010041020A DE102010041020A1 (en) | 2010-09-20 | 2010-09-20 | battery unit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201116132D0 GB201116132D0 (en) | 2011-11-02 |
| GB2483803A true GB2483803A (en) | 2012-03-21 |
| GB2483803B GB2483803B (en) | 2013-03-27 |
Family
ID=44937475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1116132.0A Expired - Fee Related GB2483803B (en) | 2010-09-20 | 2011-09-16 | Battery unit with self-sealing capability |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2012069521A (en) |
| CN (1) | CN102412372A (en) |
| DE (1) | DE102010041020A1 (en) |
| GB (1) | GB2483803B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833994A (en) * | 2017-10-23 | 2018-03-23 | 捷开通讯(深圳)有限公司 | A kind of battery and its manufacture method, electronic equipment |
| CN111775679B (en) * | 2019-04-02 | 2024-06-11 | 杭州嘉迈机械有限公司 | Steering drive system, vehicle and kit having the same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129210A (en) * | 1995-11-07 | 1997-05-16 | Kokoku Intec Kk | Sealed storage battery |
| JP2000090887A (en) * | 1998-09-10 | 2000-03-31 | Patent Treuhand Ges Elektr Gluehlamp Mbh | Incandescent lamp |
| JP2001053320A (en) * | 1999-08-11 | 2001-02-23 | Matsushita Battery Industrial Co Ltd | Solar battery module |
| JP2002292737A (en) * | 2001-03-30 | 2002-10-09 | Mitsubishi Plastics Ind Ltd | Heat-shrinkable polyolefin tube |
| JP2004079469A (en) * | 2002-08-22 | 2004-03-11 | Toyota Motor Corp | Sealed secondary battery |
| JP2005135637A (en) * | 2003-10-28 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Stacked manganese dry battery |
| EP2123718A1 (en) * | 2007-03-15 | 2009-11-25 | Mitsubishi Plastics, Inc. | Resin composition used for heat shrinkable member, heat shrinkable tube composed of the resin composition, and member covered with the tube |
| CN201868484U (en) * | 2010-11-16 | 2011-06-15 | 淄博正大电源有限公司 | Compound sealing device of battery electrode column |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5489485A (en) | 1993-12-17 | 1996-02-06 | Ryobi Motor Products Corporation | Battery removal and replacement system |
| US7332242B2 (en) * | 2000-09-01 | 2008-02-19 | Itochu Corporation | Lithium-based battery having extensible, ion-impermeable polymer covering on the battery container |
| WO2007077642A1 (en) * | 2005-12-28 | 2007-07-12 | Teruaki Matsushita | Battery cover and method of absorbing leaked liquid |
| CN101127389B (en) * | 2006-08-16 | 2011-12-07 | 深圳市比克电池有限公司 | A column lithium ion electric core, battery and its making method |
-
2010
- 2010-09-20 DE DE102010041020A patent/DE102010041020A1/en not_active Withdrawn
-
2011
- 2011-09-16 GB GB1116132.0A patent/GB2483803B/en not_active Expired - Fee Related
- 2011-09-19 CN CN2011102775082A patent/CN102412372A/en active Pending
- 2011-09-20 JP JP2011204204A patent/JP2012069521A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129210A (en) * | 1995-11-07 | 1997-05-16 | Kokoku Intec Kk | Sealed storage battery |
| JP2000090887A (en) * | 1998-09-10 | 2000-03-31 | Patent Treuhand Ges Elektr Gluehlamp Mbh | Incandescent lamp |
| JP2001053320A (en) * | 1999-08-11 | 2001-02-23 | Matsushita Battery Industrial Co Ltd | Solar battery module |
| JP2002292737A (en) * | 2001-03-30 | 2002-10-09 | Mitsubishi Plastics Ind Ltd | Heat-shrinkable polyolefin tube |
| JP2004079469A (en) * | 2002-08-22 | 2004-03-11 | Toyota Motor Corp | Sealed secondary battery |
| JP2005135637A (en) * | 2003-10-28 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Stacked manganese dry battery |
| EP2123718A1 (en) * | 2007-03-15 | 2009-11-25 | Mitsubishi Plastics, Inc. | Resin composition used for heat shrinkable member, heat shrinkable tube composed of the resin composition, and member covered with the tube |
| CN201868484U (en) * | 2010-11-16 | 2011-06-15 | 淄博正大电源有限公司 | Compound sealing device of battery electrode column |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201116132D0 (en) | 2011-11-02 |
| GB2483803B (en) | 2013-03-27 |
| CN102412372A (en) | 2012-04-11 |
| DE102010041020A1 (en) | 2012-03-22 |
| JP2012069521A (en) | 2012-04-05 |
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