GB2495640A - Tool battery with sealing film - Google Patents
Tool battery with sealing film Download PDFInfo
- Publication number
- GB2495640A GB2495640A GB1218446.1A GB201218446A GB2495640A GB 2495640 A GB2495640 A GB 2495640A GB 201218446 A GB201218446 A GB 201218446A GB 2495640 A GB2495640 A GB 2495640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- text
- battery
- sealing film
- cell holder
- cell
- 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
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
- H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
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- 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 of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
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- 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 of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/197—Sealing members characterised by the material having a layered structure
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- 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
- H01M50/20—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
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- 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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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
Abstract
A tool battery comprises a battery cell unit (12a) and a sealing film (14a) which dust-tightly and/or watertightly closes at least one electrical receiving region (16a) of the battery cell unit, the electrical receiving region containing a cell holder (18a) holding a plurality of battery cells (20a) which are thus protected from the aggressive and/or corrosive action of duct and/or moisture by the sealing film.
Description
TOOL BATTERY WITH SEALING FILM
The present invention relates to a tool battery and has particular reference to protection of an internal electrical region thereof.
Tool batteries can be vulnerable to, for example, penetration of dust andfor moisture, which can have a harmful effect on the electrical integrity and/or output capability of the battery.
It is therefore the principal object of the present invention to counteract harmful effects of that kind in the context of a tool battery.
Other objects and advantages of the invention will be apparent from the following descñption.
According to the present invention there is provided a tool battery comprising at least one battery cell unit and a sealing film which at least dust-tightly and/or watertightly closes at least one electrical receiving region of the battery cell unit.
The battery cell unit is preferably a unit of the tool battery which stores an electrical energy and provides electrical power for supply of a handtool. Such a battery cell unit can provide in at least one operating state at least 5 watts, preferably at least 25 watts and particularly preferably at least 100 watts. For example, the battery cell unit can make available at least 2.5 watt hours, particularly advantageously at least 5 watt hours, especially advantageously at least 10 watt hours.
The seaCing film is preferably a film provided for the purpose of closing a region free of opening. Such a sealing film can be thinner than 500 microns, preferably thinner than 100 microns and particularly preferably thinner than 50 microns. The sealing film is preferably sealed by material bond at joint locations andIor transitions between two regions of the sealing film, and for preference is formed as a stamped film. The electrical receiving region is for preference at least one region in which in at least one operationally ready state at least one battery cell of the battery cell unit and at least one electrical contacting means of the battery cell are arranged. Preferably, in addition a battery electronic system of the toot battery is arranged in the electrical receiving region. The electrical receiving region preferably extends at least up to an inner side of the cell holder of the tool battery. The electrical receiving region preferably comprises a component-free region lying on a straight line intersecting two battery cells of the battery cell unit.
With respect to dust-tight andlor watertight sealing, the sealing film in at least one operational state serves to hinder or prevent, especially, penetration of water andfor dust into the electrical receiving region The sealing film preferably protects the electrical receiving region according to Norm IEC 60529 at east with the protection category 1P55, preferably lP6l, particularly preferably 1P68. The sealing film preferably closes a region through which, in the absence of the seating film, water and/or dust might be able to penetrate into the e'ectrical receiving region. The tool battery can thus be used regardless of loading with moisture andlor dust. In particular the electrical receiving region remains dust-tight and/or watertight even in the case of damage of a battery housing of the tool battery. Corrosion of contacts of the battery cells and of an electronic system of the tool battery can be reduced and penetration of metal dust in the case of metal processing can be prevented. Moreover, cooling of the tool battery by immersion in water is possible. In addition, the protected tool battery may still be able to satisfactorily dissipate heat outwardly.
In a preferred embodiment it is proposed that the battery cell unit comprises a cell holder for the purpose of fastening at least one battery cell of the battery cell unit in the electrical receiving region, whereby a high mechanical stability can be achieved. The cell holder is, for example, a means which in at least one operational state exerts a fastening force on the battery cell. The cell holder preferably fastens the battery cell to a battery housing of the tool battery. The cell holder and the battery housing can be at least partly, preferably completely, separately constructed components. Advantageously, the cell holder mechanically positively and/or frictionally fastens the battery cell. The cell holder is preferably provided for the purpose of fastening a plurality of, especially identical, battery cells to be immovab'e relative to one another. Such a battery cell is, especially, a unit which serves to convert a chemically stored energy into an electrical energy. The battery cell preferably comprises an anode, a cathode, an electrolyte and a cell housing. For preference, several battery cells of the battery cell unit are electrically conductively connected.
For preference, the battery cell unit comprises a battery electronic system which fastens a the cell holder in a region protected by the sealing film, in particular in the electrical receiving region, whereby an advantageous protection of the battery electronic system can be achieved with low cost. The battery electronic system is preferably an electronic system which protects the battery at least against deep discharge and/or advantageously overload, preferably against overload andfor overheating. The battery electronic system can comprise at least one transistor, particularly preferably at least one microprocessor.
Advantageously, the battery electronic system communicates with charging apparatus in the case of. in particular1 an inductive charging process.
For preference, the sealing film is of multi-layer construction, whereby a high level of mechanical stability and a high level of reliability can be achieved. The sealing film preferably has, between two film sides, at least two layers of different materials with different mechanical properties. For preference one layer has a higher tear-resistance and the other layer a higher resilience than the respective other layer. For example, the tear-proof material could comprise a fabric. For preference, a layer facing the battery cell unit has a higher temperature stability than another layer.
In addition, the sealing film can be formed at least partly by a water-steam permeable membrane, whereby moisture which has penetrated into the electrical receiving region can escape from the eleätrical receiving region, especially in the case of heating of the battery cell during energy exchange. The water-steam permeable membrane is preferably a layer element which is able to be substantially more readily penetrated by vaporised water than liquid water. The membrane preferably has, according to Norm EN 20811:1992, at least one waler column of 5000 millimetres. The membrane is preferably constructed as hydrophilic membrane, such as a poiyetherester membrane. Alternatively, the membrane can be constructed as a polytetrafluoroethylefle membrane.
The sealing film preferably closes an open side of the cell holder, whereby an advantageous seaLing with a small amount of sealing film is possible in constructionally simple manner For preference, the cell holder completely surrounds the electrical receiving region apart from the open side and the sealing film seats the open side. The cell holder and the sealing film preferably in common completely seal off the electrical receiving region. For preference the battery cell unit, particularly the cell holder of the battery cell unit, has a sealed cable passage. The cable passage is preferably arranged at least partly at the sealing film.
In an advantageous construction it is proposed that the sealing film is connected at least partly by material couple with the cell holder, whereby a particularly reliable sealing of the electrical receiving region is possible. In that case, the sealing film and the cell hotder are preferably held together by atomic or molecular forces such as, for example, soldered, weLded, glued and/or vulcanised.
In a further embodiment the tool battery comprises a battery housing having at least one ventilation opening. The battery housing is preferably a unit which protects the battery cell unit from external mechanical influences. The battery housing preferably comprises a coupling means for electrical and/or advantageously at least mechanical coupling with a handtool. The ventilation opening is for preference a region which is bounded by the battery housing and through which at least air can penetrate into an inner region of the battery housing. For preference, at least air at an outer side of the cell hoLder and/or advantageously of the sealing film can penetrate through the ventilation opening. In particuLar, the ventilation opening or openings is or are provided for conducting away vaporised water, which has flowed out of the membrane, from the electrical receiving region. Condensation in the electrical receiving region and thus corrosion can be rninimised by the ventilation opening.
The sealing film can be applied at least partly in a shrink-fitting process to the battery cell unit, whereby a good mechanical stability can be achieved. Such a shrink-fitting process is, for example, a process in which the sealing film is drawn together. The shrink-fitting process is preferably triggered by a heating and/or a cooling of the sealing film. By application to the battery cell unit there is to be understood, for example, that the sealing film after the shrink-fitting process has a force couple and/or a shape couple with the battery cell unit.
Additionally or alternatively the sealing film can be applied to the battery cell unit at least partly by a sub-atmospheric pressure, whereby a good mechanical stability can be achieved. The sub-atmospheric pressure is, especially, a lower gas pressure prevailing in a region protected by the sealing film than outside the region.
For preference, the sealing film, particularly in the case of a block-shaped battery cell unit, advantageously bounds exactly four sides of the electrical receiving region, in which case use can be made of a hose-shaped sealing film, which involves low constructional outlay.
For the bounding, the sealing film preferably forms a side wall of the electrical receiving region. In the case of a battery cell unit having at least a triangle as base area, the sealing film can then bound exactly three sides of the electrical receiving region. The sealing film thus completely bounds the electrical receiving region apart from two sides.
Moreover, the cell holder can bound, in particular, exactly two mutually opposite sLdes of the electrical receiving region, whereby a particularly stable construction is possible.
In an advantageous embodiment the cell holder comprises at least one first cell holder part and second cell holder part constructed separately from the first cell holder part, whereby a low weight with small constructional outlay can be achieved. A cell holder part is preferably a part of the cell holder which in at least one operational state produces a fastening force on at least one battery cell of the battery ceU unit. Advantageously, the at least one battery cell is clamped in place between the cell holder parts. The separately constructed components are, especially, components which can be produced individually.
The cell holder parts are preferably not integrally constructed.
For preference, the sealing film connects the first cell holder part and the second cell holder part together, whereby it is advantageously possible to dispense with other components connecting the cell holder part. The sealing film preferably prevents movement apart of the two cell holder parts.
In addition, the cell holder preferably has at least one film fastening edge, whereby a particularly stable fastening of the sealing film is possible. The film fastening edge is, for example, an edge provided for the purpose of counteracting slipping of the sealing film off the cell holder.
The invention also embraces a system comprising a handtool and a tool battery according to the invention or an electric bicycle and such a battery. The haridtool can be any tool appearing useful to the expert, especially a power drill, a hammer-drill, an impact hammer, a saw, a planer, a screwdriver, a miller, a grinder, an angle grinder, garden apparatus, a construction measuring instrument and/or a multi-functional tool.
Embodiments of the present invention wilt now be more particularly described by way of example with reference to the accompanying drawings, in which: Fig. 1 is a schematic sectional view of a first tool battery embodying the invention; Fig. 2 is a schematic cross-section of the battery of Fig-1; Fig. 3 is a schematic sectional view of a second tool battery embodying the invention; Fig. 4 is a schematic perspective view of the battery of Fig. 3; Fig. 5 is a schematic sectional view of a third tool battery embodying the invention; Fig. 6 is a schematic sectional view of a fourth tool battery embodying the invention; Fig. 7 is a schematic, partly sectional exploded illustration of a fifth tool battery embodying the invention; and Fig. 8 is a sectional view of the tool battery of Fig. 7 in assembled state.
Referring now to the drawings there is shown in Figs. 1 and 2 show a tool battery ba of a system composed of the toot battery ba and of a handtool, which is not illustrated. The tool battery bOa comprises coupling means 30a which in an operationally ready state mechanically and electrically couples the battery with the handtool. Moreover, the toot battery lOa comprises a battery cell unit 12a, a sealing film 14a and a battery housing 26a.
The battery cell unit 12a comprises an electrical receiving region 16a, a cell holder iSa, a plurality of battery cells 20a and a battery electronic system 22a. The cell holder iSa fastens the battery cells 20a and the battery electronic system 22a in the electrical receiving region iSa. In addition, the cell holder iSa bounds the electrical receiving region iSa in directions which are oriented perpendicularly to a mounting direction of the battery cells 20a in the cell holder iSa. The cell holder 16a is of two-part construction. The battery cells 20a and the battery electronic system 22a are inserted into a first part 32a of the cell holder 18a. The electrical receiving region 16a of the cell holder ISa is subsequently covered for the major part by the second part 34a of the cell holder 18a.
The cell holder ISa thus subdivides the electrical receiving region 16a into a plurality of regions.
The sealing film 14a completely surrounds the battery cell unit IZa. Overlaps, which are not illustrated, of two regions of the sealing film 14a and joint Locations, which are also not illustrated1 of two regions of the sealing film 14a are glued together. The sealing film 14a thus dust-tightly and watertightly closes the electrical receiving region iSa of the battery celL unit 12a. The cell holder 18a fastens the battery cells 20a and the battery electronic system 22a in a region protected by the sealing film 14a. The battery cell unit 12a has a cable passage 36a. A cable 38a of the tool battery Wa is led through the cable passage 36a and connects the battery cell unit 12a with the coupling means 30a. The sealing film 14a is of double-layered construction. It has a soft layer of polyamide with a high tear-resistance and a layer of polyethylene with a high elasticity. The sealing film 14a is applied to the battery cell unit 12a by a sub-atmospheric pressure. In order to achieve this, the sealing film 14a is closed at a pressure of less than 0.9 bar.
The battery housing 26a protects the battery cell unit 12a and the sealing film 14a from external mechanical influences. The battery housing 26a is formed from a thermoplastic and surrounds the battery cell unit 12a and the sealing film 14a. The battery housing 26a has a plurality of ventilation openings 28a through which air can flow against the sealing film 14a. The battery housing 26a can thereby discharge moisture, which has penetrated the battery housing 26a, from the housing. In particular, mechanical damage of the battery housing 26a does not have the consequence that moisture penetrates into the battery housing 26a, but no longer escapes.
Three further embodiments of the invention are shown in Figs. 3 to 6. The following descriptions and drawings are substantially confined to the differences between the embodiments, wherein with respect to identically designated components, particularly with respect to components with the same reference numerals, reference can also be made to the drawings and/or the description of the other embodiments, particularly of Figs. 1 and 2.
For distinguishing the embodiments the letter a is appended to the reference numerals of the embodiment of Figs. 1 and 2. In the embodiments of Figs. 3 to 6 the letter a is replaced by the letters b to d.
Figs. Sand 4 show a tool battery lOb with a battery cell unit 12b, a sealing film 14b and a
B
battery housing 2Gb. The battery cell unit 12b comprises a cell holder lBb and a plurality of battery cells 20b. The sealing films 14b dust-lightly and watertightly close an electrical receiving region 16b of the battery cell unit 12b. The cell holder 18b fastens the battery cells 2Db in the electrical receiving region 16b. The battery cells 20b are pushed into the cell holder 18b. The cell holder lBb has two open sides 24b oriented perpendicularly to a push-in direction. The battery cells 20b are electrically conductively connected together at the open sides. The sealing films 14b are connected by material couple with the cell holder 18b and, in particular, with regions 4Db adjoining the open sides 24b. The regions 40b each enclose one of the open sides 24b. The sealing films 14b thus dust-tightly and watertightly close the open sides 24b of the cell holder 18b.
Fig. 5 shows a tool battery bc with a battery cell unit 12c, a sealing tUrn 14c and a battery housing 26c, The battery cell unit 12c comprises a cell holder 18c and a plurality of battery cells 20c. The cell holder 1 Bc fastens the battery cells 20c in an electrical receiving region 16c. The battery cells 20c are pushed into the cell holder iso. The battery housing 26c comprises a first housing part 42c and a second housing part 44c. In an operationally ready state the housing parts 42c, 44c are connected together in a joining process. P coupling means 30c of the battery tool bc is arranged at the first housing part 42c. The coupling means is sealed off by material couple.
The sealing film 14c dust-tightly and watertightly closes the electrical receiving region 16c of the battery cell unit 12c. The first housing part 42c and the sealing film 14c are connected by material couple. For assembly, the battery cell unit 12c is inserted into a pocket formed by the sealing film 14c. The sealing film 14c is subsequently glued to the first housing part 42c, in particular in a region 46c adjoining a region in which the housing parts 42c, 44c adjoin one another in an operationally ready state. In that case, the cell holder lBc presses the sealing film 14c against the first housing part 42c. The sealing film 14c is subsequently applied to the battery cell unit 12c in a shrink-fitting process. In that case, the sealing film 14c fastens the battery cell unit 12c to the battery housing 26c. A super-atmospheric pressure preventing penetration of moisture and dust into the electrical receiving region 1 6c prevails in the electrical receiving region I 6c in an operationally ready state. The super-atmospheric pressure arises, on application of the sealing film 14c, by a volume change of the region enclosed by the sealing film 14c.
Fig. 6 shows a tool battery lOd with a battery cell unit 12d, a sealing film 14d and a battery housing 26d. The battery cell unit 12d comprises a cell holder lBd, a plurality of battery cells 20d and an energy transfer coil 48d. The cell holder 18d fastens the battery cells 20d. The battery cells 20d are pushed into the cell holder 18d. The energy transfer coil 48d inductively transfers energy in the case of a charging process and in the case of a working process of a handtool. The sealing film 14d dust-tightly and watertightly closes an electrical receiving region 16d of the battery cell unit 12d. The sealing film 14d is of triple-layer construction. The sealing film 14d is.-here not illustrated in more detail -formed by a water-steam permeable membrane and two textile layers. The textile layers are laminated onto the water-steam permeable membrane on both sides. The textile layers thus protect the water-steam permeable membrane from mechanical damage. The sealing film 14d completely surrounds the battery cell unit 12d. In particular, the sealing film 14d does not have a cable passage. A coupling means 30d of the battery housing 26 is coupled with the handtool merely mechanically.
Figs. 7 and 8 show a tool battery be with a battery cell unit 12e, a sealing film 14a, a battery housing 26e and a coupling means 30e. The battery cell unit 12e comprises a cell holder ise, four battery cells 20e and a battery electronic system 22e. One cell holder IBe fastens the battery cells 20e of the battery cell unit 12e in an electrical receiving region 16e. The cell holder The comprises a first cell holder part 52e and a second cell holder part 54e constructed separately from the first cell holder part 52e. The two cell holder parts 52e, 54e bound the electrical receiving The on two mutually opposite sides. The first cell holder part 52e is formed integrally with a first housing part 42e of the battery housing 26e. The first cell holder part 52e fastens the battery electronic system 22e. The battery electronic system 22e is clipped into a cut-out of the first cell holder part 52e. The coupling means 30e of the tool battery iDe is arranged at the first housing part 42e. The second cell holder part 54e is of substantially plate-shaped construction.
The sealing film 14e dust-tightly and watertightly closes the electrical receiving region 16e of the battery cell unit 12e. For that purpose, the sealing film 14e bounds the electrical receiving region 16e on four sides, which do not bound the cell holder parts 52e, 54e. The sealing film 14e bounds the electrical sealing region 16e on sides oriented perpendicularly to a side which bounds the first cell bolder part 52e. The first cell holder part 52e has a film fastening edge 56e, which is part of a groove. The film fastening edge 56e encircles the first cell holder part 52e. The second cell holder part 54e similarly has a film fastening edge 58e. The film fastening edge 58e of the second cell holder 54e is given by the plate-shaped form. A respective edge of the sealing film 14e surrounds one of the film fastening edges 56e. 58e in a shrink-fitting process. The sealing film 14e thus connects together the first ce}l holder part 52e and the second cell holder part 54e.
Claims (1)
- <claim-text>CLAIMS1. A tooS battery comprising at least one battery cell unit and a sealing film which at least dust-tightly and/or watertightly closes at least one electrical receiving region of the battery cell unit.</claim-text> <claim-text>2. A battery according to claim 1, wherein the battery cell unit comprises a cell holder for fastening at least one battery cell in the electrical receiving region.</claim-text> <claim-text>3. A battery according to claim 2, wherein the battery cell unit comprises a battery electronic system fixing the cell holder in a region protected by the sealing film.</claim-text> <claim-text>4. A battery according to claim 2 or claim 3, wherein the sealing film closes an open side of the cell holder.</claim-text> <claim-text>5. A battery according to any one of claims 2 to 4, wherein the sealing film is connected at least in part by material couple with the cell holder.</claim-text> <claim-text>6. A battery according to any one of claims 2 to 5, wherein the cell holder bounds two mutually opposite sides of the electrical receiving region.</claim-text> <claim-text>7. A battery according to any one of claims 2 to 6, wherein the cell holder comprises a first cell holder part and second cell holder part constructed separately from the first cell holder part.</claim-text> <claim-text>8. A battery according to claim 7, wherein the sealing film connects the first cell holder part and the second cell holder part together.</claim-text> <claim-text>9. A battery according to any one of claims 2 to 8. wherein the cell holder has at least one film fastening edge.</claim-text> <claim-text>10. A battery according to any one of the preceding claims, wherein the sealing film is of multi-layer construction.</claim-text> <claim-text>11. A battery according to any one of the preceding claims, wherein the sealing film is formed at least in part by a membrane permeable by water-steam.</claim-text> <claim-text>12. A battery according to any one of the preceding claims, comprising a battery housing having at least one ventilation opening.</claim-text> <claim-text>13. A battery according to any one of the preceding claims, wherein the sealing film is applied to the battery cell unit at least partly by a shrink-fitting.</claim-text> <claim-text>14. A battery at least according to any one of the preceding claims, the seating film is applied to the battery cell unit at least partly by use of a subatmOSPheric pressure.</claim-text> <claim-text>15. A battery according to any one of the preceding claims, wherein the sealing film bounds four sides of the electrical receiving region.</claim-text> <claim-text>16. A system comprising a handtool and a battery according to any one of the preceding claims.</claim-text> <claim-text>17. A system comprising an electric bicycle and a battery according to any one of claims ito 15.</claim-text>
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011084493 | 2011-10-14 | ||
| DE102012203938A DE102012203938A1 (en) | 2011-10-14 | 2012-03-14 | Battery for handtool, has multilayer sealing film that dust-tightly or watertightly closes at least one electrical receiving region of battery cell unit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201218446D0 GB201218446D0 (en) | 2012-11-28 |
| GB2495640A true GB2495640A (en) | 2013-04-17 |
| GB2495640B GB2495640B (en) | 2014-05-07 |
Family
ID=47324765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1218446.1A Active GB2495640B (en) | 2011-10-14 | 2012-10-12 | Tool battery with sealing film |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2495640B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10086713B2 (en) | 2016-06-23 | 2018-10-02 | Qualcomm Incorporated | Wireless power transfer for integrated cycle drive systems |
| WO2019061089A1 (en) * | 2017-09-27 | 2019-04-04 | Changzhou Globe Co., Ltd. | Battery for power tools |
| USD922938S1 (en) | 2018-05-21 | 2021-06-22 | Techtronic Floor Care Technology Limited | Battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10086713B2 (en) | 2016-06-23 | 2018-10-02 | Qualcomm Incorporated | Wireless power transfer for integrated cycle drive systems |
| WO2019061089A1 (en) * | 2017-09-27 | 2019-04-04 | Changzhou Globe Co., Ltd. | Battery for power tools |
| USD922938S1 (en) | 2018-05-21 | 2021-06-22 | Techtronic Floor Care Technology Limited | Battery |
| USD973017S1 (en) | 2018-05-21 | 2022-12-20 | Techtronic Floor Care Technology Limited | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201218446D0 (en) | 2012-11-28 |
| GB2495640B (en) | 2014-05-07 |
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