EP3227941A1 - Akkuvorrichtung - Google Patents
AkkuvorrichtungInfo
- Publication number
- EP3227941A1 EP3227941A1 EP15787989.1A EP15787989A EP3227941A1 EP 3227941 A1 EP3227941 A1 EP 3227941A1 EP 15787989 A EP15787989 A EP 15787989A EP 3227941 A1 EP3227941 A1 EP 3227941A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery device
- energy storage
- storage unit
- subunits
- housing
- 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.)
- Withdrawn
Links
- 238000004146 energy storage Methods 0.000 claims description 189
- 229910001416 lithium ion Inorganic materials 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 30
- 238000003780 insertion Methods 0.000 description 14
- 230000037431 insertion Effects 0.000 description 14
- 239000007787 solid Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005298 paramagnetic effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241000238367 Mya arenaria Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000011800 void material Substances 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
- H01M50/267—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders having means for adapting to batteries or cells of different types or different sizes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- 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
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- 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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
Definitions
- the invention is based on a battery device.
- a battery device in particular handheld power tool battery device, with at least one highly functional energy storage unit is proposed.
- an existing space can be used particularly advantageous. It can be provided a particularly compact battery device. It can be provided a particularly lightweight battery device. It can be provided depending on the application particularly well adapted battery device. Depending on an application, a battery device with a particularly high operating voltage and / or with a particularly high operating current and / or with a particularly high capacitance can be provided.
- a "rechargeable battery device” is to be understood as meaning, in particular, a device for temporarily storing electrical energy.
- the rechargeable battery device is preferably provided for supplying energy to an electrical machine, in particular a handheld power tool Machine provided.
- the battery device is provided to be releasably connected tool-free with the electric machine.
- the battery device has a housing which is only partially surrounded by a housing of the electrical machine in a connected state.
- an "energy storage unit” is to be understood as meaning in particular a unit which is intended to store and provide electrical energy
- the energy storage unit preferably has at least one electrochemical cell should be understood in this context, in particular an energy storage unit having adapted performance parameters.
- the performance parameters are adapted to an application.
- a "performance parameter” should be understood to mean, in particular, a design, a size, a gravimetric energy density, a gravimetric power density and / or a stress density.
- “Gravimetric density” is to be understood in this context to mean, in particular, a quantity relating to a mass be understood.
- a “subunit” of an energy storage unit is to be understood in this context, in particular, as a unit enclosed by a shell, which can be contacted individually.
- the at least one energy storage unit is designed as a highly integral energy storage unit.
- a particularly high degree of filling of a storage area provided for the energy storage unit can be achieved.
- a "highly integral" energy storage unit is to be understood as meaning, in particular, an energy storage unit whose dimensions and / or design are adapted to an application, for example to dimensions of a storage area provided for the energy storage unit one in one mounted
- the at least one energy storage unit has a different base area from a circle.
- This can be a be provided particularly flexible energy storage unit.
- a degree of filling can be further increased.
- a "base area” should be understood as meaning, in particular, a surface on an edge of a body which corresponds to a cross section of the body at various distances from the edge, preferably at any distance from the edge.
- the energy storage unit is in the form of a prism and the base is formed as a prism base.
- the energy storage unit is designed as a straight prism.
- the energy storage unit preferably has an at least substantially polygonal base area.
- a "substantially polygonal" surface should be understood as meaning, in particular, an area which deviates from an exactly polygonal area by less than 10 percent, preferably by less than 5 percent and particularly preferably by less than 2 percent, for example due to arcuate surfaces Compounds of edges instead of corners
- the energy storage unit has a
- the energy stores can advantageously be scaled, i. a size and / or performance parameters can be adjusted.
- the subunits are each in the form of a prism, preferably in the form of a straight prism.
- the base of the energy storage unit is triangular or the energy storage unit has at least one subunit having a triangular base.
- the base area has more than four edges or the energy storage unit has at least one subunit with a base area with more than four edges.
- the base surface of the energy storage unit may be at least substantially circular or have an oval shape. This can be a
- Shape of the energy storage unit are particularly flexible adapted to a space provided for energy storage room.
- the energy storage unit comprises two contact means, which are arranged on two different edges.
- the contact means are arranged on two different edges of the base. This can be a special robust and short-circuit-proof contacting the energy storage unit can be achieved.
- the contact means are arranged on two mutually adjacent edges of the energy storage unit.
- a space for a contact can be used particularly advantageous.
- a space to be provided for the energy storage unit can be further reduced.
- the at least one energy storage unit has at least two subunits which are of different sizes.
- the energy storage unit can be scaled in a particularly advantageous manner. Performance parameters of the energy storage unit can be changed particularly easily over a particularly large range and / or adapted to a purpose of use.
- the at least two subunits have at least 20 percent different volumes from each other.
- a particularly flexibly adaptable energy storage unit can be provided.
- the volumes preferably deviate from one another by at least 30 percent and particularly preferably by at least 50 percent.
- the at least two subunits deviate from each other by at least 20 percent in at least one extension direction. As a result, an adaptation to a space can be further optimized.
- the at least two subunits preferably deviate from one another in at least one extension direction by at least 30 percent, and particularly preferably by at least 50 percent.
- the at least one energy storage unit has at least two subunits with different shapes.
- an adaptation to a storage area provided for energy storage can be further optimized.
- a void volume can be avoided.
- different dimensional ratios are to be understood as meaning different "shapes.”
- the subunits preferably have different geometric basic shapes, for example different prism shapes, which differ in particular in a number of edges of a base surface.
- the rechargeable battery device comprises a housing which has at least two storage areas with different storage space dimensions, which are each provided for storage for a subunit of the at least one energy storage unit adapted to the respective storage area.
- the storage area is bounded by the housing.
- "adapted" should be understood in particular to mean that the subunit has a dimension in at least one spatial direction that corresponds to a dimension of the storage area in the spatial direction at a location provided for the subunit
- Subunit in two directions each have a dimension corresponding to the dimensions of the storage area.
- the adapted subunit in each case has a dimension in three spatial directions which respectively correspond to dimensions of the storage area.
- at least one surface of the matched subunit is in contact with a surface of the housing.
- at least two and more preferably at least three, four, five or six surfaces of the matched subunit are each in contact with a surface of the housing.
- the energy storage unit has a base area with a stepped edge. This allows the base to a curved
- Contour of a storage area are approximated and a degree of filling can be further increased.
- the battery device has at least one functional element, which is surrounded in an assembled state on at least two sides of the at least one energy storage unit.
- the functional element can be used particularly efficiently.
- the functional element can be arranged particularly protected. Damage to the functional element can be avoided.
- a particularly robust battery device can be provided.
- a location of the functional element can be set particularly flexible.
- An existing space can be used particularly advantageous.
- a "functional element” is to be understood as meaning a component which is intended to detect, modify and / or regulate at least one operating parameter of the battery device. formed gel element. As a result, a high signal quality and / or control quality can be achieved.
- a measuring and / or regulating element is to be understood as meaning in particular a sensor, for example an NTC element, or a cooling element, heating element and / or insulating element.
- the functional element is designed as an electronic unit and / or comprises a printed circuit board.
- the functional element is provided for a data exchange, for example for a wireless data exchange.
- the functional element is designed as a magnetic holding element or storage element, for example for a storage for one or more application tools or screws.
- the battery device has a housing shell, from which the functional element is arranged at a distance. As a result, point voltages in the housing shell and / or in housing elements can be avoided.
- the battery device comprises housing elements which are intended to receive the functional element.
- a housing element should be understood in this context, in particular an internal support member, a separating element and / or a cell holder.
- the rechargeable battery device comprises a charging means which is provided for wireless energy transmission in the at least one energy storage unit.
- a charging means can be arranged in a particularly space-saving manner in the housing of the battery device.
- a volume increase by the charging means can be limited. It can be provided a very convenient charging function.
- a charging means is to be understood in particular to mean a device which is intended to convert a wirelessly transmitted energy into an electrical current for charging the energy storage unit.
- a "wireless" energy transmission should be understood as meaning, in particular, an electromagnetic, in particular an inductive energy transmission.
- the charging means has an induction coil is provided to cooperate with a arranged outside the housing of the battery device primary coil to the wireless power transmission.
- the at least one energy storage unit is designed as a highly efficient energy storage unit. As a result, a required installation space for the energy storage unit can be further reduced. It can be provided a particularly lightweight battery device. It can be achieved a high level of user comfort.
- a high-efficiency energy storage unit should be understood as meaning in particular an energy unit which, in at least one operating mode, has a gravimetric energy density of more than 120 Wh / kg, preferably more than 150 Wh / kg and more preferably more than 170 Wh / kg having.
- the energy storage unit in at least one operating mode has a gravimetric power density of 500 W / kg, preferably of 540 W / kg and particularly preferably of 560 W / kg.
- the energy storage unit has a low internal resistance. As a result, a parallel connection of energy storage units can be avoided. It can be provided a compact battery device. It can be provided a battery device for use with high power requirements.
- the at least one energy storage unit has a voltage density of at least 1.2 mV / mm 3 in at least one operating mode.
- a small minimum size for the battery device can be achieved. It can be provided a particularly versatile Akkuvor- direction. It can be a battery charger for a big one
- a "voltage density” is to be understood as meaning, in particular, a ratio of a supplied electrical voltage to a volume filled by the energy storage unit,
- the energy storage unit has a voltage density of at least 1.2 mV / mm 3 at least in an unloaded state
- the energy storage unit preferably has a voltage density of at least 1.4 mV / mm 3 , more preferably of at least 1.6 mV / mm 3 .
- the battery device has an operating voltage of at least 18 V, which is provided by the at least one energy storage unit in at least one operating mode. As a result, a simultaneously compact and powerful rechargeable battery device can be provided.
- a particularly lightweight rechargeable battery device can be provided for uses with a minimum voltage requirement and a short service life. An application of the battery device can be further increased.
- an "operating voltage” should be understood as meaning, in particular, a nominal voltage whose value lies between a charge end voltage and a discharge end voltage. ⁇ br/> ⁇ br/>
- the rechargeable battery device preferably has an operating voltage of at least 24 V, preferably of at least 30 V and particularly preferably of at least 36 V.
- the at least one energy storage unit has a lithium-ion cell. This can be a particularly durable
- the lithium-ion cell is formed as a lithium polymer cell.
- the energy storage unit has at least one pouch cell.
- a particularly light energy storage unit can be provided.
- the energy storage unit can be scaled in an advantageous manner.
- An energy storage unit with a large number of electrochemical cells can be provided. Magnetizability of the shell can be limited.
- a "pouch cell" is to be understood as meaning an electrochemical cell which has a foil sheath
- the foil sheath is preferably designed as an aluminum foil coated with an insulator.
- the energy storage unit has at least one shell which is at least substantially non-magnetizable.
- a particularly efficient wirelessly chargeable energy storage unit can be provided.
- a "shell” is to be understood as meaning, in particular, an element which is intended to at least substantially completely surround an electrochemical cell the envelope is at least substantially dense, in particular gas-tight, formed.
- the energy storage unit has a plurality of subunits each having a shell which is at least substantially non-magnetisable
- the energy storage unit has a plurality of subunits each having a shell which is at least substantially non-magnetisable
- a system comprising a hand tool and a battery device according to the invention is proposed.
- This allows a shape of the battery device to be aligned with an overall system design.
- a particularly compact system can be provided.
- a particularly lightweight system can be provided. It can be achieved a high level of user comfort.
- a hand-held power tool should be understood as meaning in particular an electric hand-held power tool, for example a drill, a cordless screwdriver, a grinder, a saw, a grinder or a multifunction machine.
- the battery device has a mechanical interface unit and electrical interface unit to a detachable electrical and mechanical connection with the power tool.
- Battery device can be charged in a state detached from the power tool. It can be achieved a high level of user comfort. It is conceivable that the battery device is intended to be charged in a state in which it is connected to the power tool. It is conceivable that the hand tool is intended to be one
- the system comprises a replacement battery device which has a mechanical interface unit and electrical interface unit. unit, which is designed analogously to the mechanical interface unit and electrical interface unit of the battery device, as well as a different energy storage structure of the battery device comprises.
- a replacement battery device is to be understood as meaning, in particular, a device for the temporary storage of electrical energy
- Mathakkuvorraum comprise energy storage units having a different geometric structure, differently designed subunits, a different arrangement of the subunits and / or different electrochemical cell types.
- the battery device according to the invention should not be limited to the application and embodiment described above.
- the rechargeable battery device according to the invention can have a number deviating from a number of individual elements, components and units mentioned herein for fulfilling a mode of operation described herein.
- FIG. 1 shows a system with a hand tool and a battery device according to the invention in a side view
- FIG. 2 is a schematic exploded view of the battery device
- 3 is a schematic exploded view of a replacement battery device of the system
- FIG. 5 shows the battery device in a partially sectioned side view perpendicular to the insertion direction
- FIG. 6 shows an embodiment of a cordless device with two compartments in a partially cutaway side view perpendicular to the insertion direction
- FIG. 7 shows an embodiment of a battery device with an alternative arrangement of a functional element in a partially sectioned side view perpendicular to the insertion direction
- FIG. 8 shows an embodiment of a battery device with a charging means in a schematic exploded view
- FIG. 11 shows an embodiment of a rechargeable battery device with a housing with three angularly displaced subunits in a plan view
- Fig. 12 and an embodiment of a cordless device with a
- FIG. 1 shows a system 84a comprising a handheld power tool 86a and a rechargeable battery device 10a.
- the hand tool 86a is designed as an electric hand tool 86a.
- the hand tool 86a is formed in the present embodiment as a cordless screwdriver.
- the hand tool 86a comprises a main body 98a and a handle 100a.
- the hand tool 86a has an electric drive unit 102a, which is designed as an electric motor, and a tool holder 104a, which is provided for receiving a non-illustrated insert tool, such as a screwdriver blade.
- the handle 100a is disposed at an angle to the main body 98a on one side of the main body 98a. In one operating state, a user includes the handle 100a with one or both hands and holds and / or guides the hand tool 86a.
- the rechargeable battery device 10a of the system 84a is intended to store energy and to supply the drive unit 102a of the handheld power tool 86a with electrical energy. It is conceivable that the rechargeable battery device 10a is provided to supply other units of the portable power tool with electrical energy, such as a display and / or a control and / or regulating unit.
- the rechargeable battery device 10a has an energy storage unit 12a, which is intended to store electrical energy and to supply the drive unit 102a of the handheld power tool 86a with electrical energy.
- the rechargeable battery device 10a also has a housing 56a, which is provided to store and protect components of the rechargeable battery device 10a.
- the housing 56a is formed substantially cuboid in the present embodiment.
- the housing 56a is provided to store and protect the energy storage unit 12a.
- the housing 56a is formed in the present embodiment of a solid plastic.
- the housing 56a has a substantially planar housing base side 106a.
- the housing 56a comprises a housing cover 108a and a housing bottom 110a, which form a housing shell 112a. It is conceivable that the housing has one of two different number of housing parts.
- the housing shell 112a surrounds the energy storage unit 12a in an assembled state.
- the housing shell 112a forms an outer shell of the battery device 10a.
- the rechargeable battery device 10a has a mechanical interface unit 88a and an electrical interface unit 90a for a releasable electrical and mechanical connection with the handheld power tool 86a (see FIG.
- the interface units 88a, 90a are arranged on one of the housing base side 106a opposite interface side 114a of the battery device 10a.
- the battery device 10a further has two end surfaces 116a, 118a and two side surfaces 120a, 122a.
- the handle 100a of the portable power tool 86a has a receptacle that corresponds to the interface units 88a, 90a of the battery device 10a.
- the interface units 88a, 90a and the receptacle of the handle 100a are intended to be connected to each other by means of an insertion movement.
- the battery device 10a has a plug-in direction 124a.
- the insertion direction 124a is aligned parallel to the housing base side 106a in the present embodiment.
- the housing 56a is formed stepwise on the interface side 114a. In the present embodiment, the housing 56a at a step transition on two guide elements 126a, which are each formed as a groove in the insertion direction 124a. One of the guide elements 126a is visible in FIG.
- Interface units 88a, 90a have a common insertion area, which encloses the receptacle in the handle 100a in a connected state. In the connected state, the housing base side 106a, the end surfaces 116a, 118a and the side surfaces 120a, 122a are exposed.
- the interface units 88a, 90a are essentially mirror-symmetrical with respect to a plane perpendicular to the interface side 114a.
- the mechanical interface unit 88a comprises a spring-loaded detent element 128a, which is provided to latch the rechargeable battery device 10a in the hand tool 86a.
- the latching element 128 a is pivotable on the
- Interface side 114a stored and protrudes in a locking position on the interface side 114a addition.
- the locking element 128a is provided for a positive connection with a corresponding element not shown in detail in the receptacle of the handle 100a for the battery device 10a.
- the interface unit 88a has an unlocking member 130a.
- the unlocking element 130a is connected to the latching element 128a and provided to pivot the latching element 128a against a spring force and to sink it into the interface side 114a for unlocking.
- the rechargeable battery device 10a is intended to be detached from the handheld power tool 86a without tools and without destruction, starting from a connected state.
- the electrical interface unit 90a comprises an electrical contact unit 132a, which has a plurality of contact springs in the present exemplary embodiment.
- the receptacle of the hand tool 86a has a speaking contact unit, which makes in a connected state with the contact unit 132a of the interface unit 90a an electrical contact to a transfer of electrical energy from the battery device 10a to the power tool 86a.
- the rechargeable battery device 10a has a display which is provided to indicate to the user a charging process and / or a charging state of the rechargeable battery device 10a and which comprises, for example, an LED or a plurality of LEDs.
- the system 84a further comprises a replacement battery device 92a, which is intended to be exchanged for the battery device 10a (see Figure 3).
- the replacement battery device 92a is intended to be connected to the portable power tool 86a as an alternative to the battery device 10a.
- the replacement battery device 92a comprises, analogously to the battery device 10a, a housing with a housing cover 134a and a housing bottom 136a.
- the replacement battery device 92a comprises a mechanical interface unit 94a and an electrical interface unit 96a, each of which is analogous to the mechanical interface unit 88a and electrical interface unit 90a of the battery device 10a.
- the mechanical interface unit 94a comprises two guide elements 138a, a latching element 140a and an unlocking element 142a, each analogous to the guide elements 126a, the
- the electrical interface unit 94a comprises a contact unit 144a with a plurality of contact elements.
- the contact unit 144a is analogous to the contact unit 132a of the battery device 10a.
- the spare battery device 92a has a different energy storage structure from the battery device 10a.
- the replacement battery device 92a has an energy storage unit 146a.
- the energy storage unit 146a is formed differently from the energy storage unit 12a of the battery device 10a.
- the energy storage unit 146a of the replacement battery device 92a has a plurality of subunits 148a-156a. Subunits 148a-156a are analogous to each other.
- Subunits 148a-156a each have an electrochemical cell. Subunits 148a-156a have a same nominal voltage of 3.6V. In the present embodiment, the subunits 148a-156a are connected in series. The replacement battery device 92a has a nominal voltage of 18V. Subunits 148a-156a a same geometric shape. The subunits 148a-156a are each formed as a round cell and have a same circular cylindrical shape.
- the energy storage unit 12a of the battery device 10a is designed as a highly functional energy storage unit 12a.
- the energy storage unit 12a is designed as a highly integral energy storage unit 12a and fills a space provided for the energy storage unit 12a by 98%.
- the energy storage unit 12a comprises a plurality of subunits 36a-46a (see Figure 2).
- Subunits 36a-46a each comprise an electrochemical cell.
- the subunits 36a-46a have a same nominal voltage of 3.6V.
- the energy storage unit 12a comprises six subunits 36a-46a in the present embodiment.
- the rechargeable battery device 10a comprises a control unit, which is not shown in more detail and is intended to regulate and / or monitor charging currents and discharge currents.
- the control unit is designed as an electronic unit.
- the subunits 36a-46a are each in the form of a straight prism.
- the subunits 36a-46a each have a base 16a-26a.
- the base areas 16a-26a each extend along a main extension direction of the subunits 36a-46a in the present embodiment.
- the bases 16a-26a of the various subunits 36a-46a are arranged parallel to each other.
- the base surfaces 16a-26a are each aligned in an assembled state parallel to the housing base side 106a of the battery device 10a.
- Subunits 36a-46a form a stack. The stacking direction is aligned perpendicular to the housing base 106a.
- the stack has a peripheral subunit 36a on an upper side and two peripheral subunits 44a, 46a on an underside.
- the marginal subunits 36a, 44a, 46a are in an assembled state, respectively along their main extension in surface contact with the housing shell 112a. It is conceivable that the marginal subunits 36a, 44a, 46a are in surface contact with elements which are arranged along the housing shell 112a, for example functional elements such as sensors and / or control elements. It is also conceivable that the base surfaces 16a-26a of the subunits 36a-46a or a part of the subunits 36a-46a perpendicular to the housing base side 106a or at a different angle to the housing base 106a are arranged.
- the bases 16a-26a are each different from a circle.
- the bases 16a-26a are each formed as a polygon.
- the base surfaces 16a-26a are each rectangular.
- the subunits 36a-46a are each in the form of a flat cuboid. It is conceivable that the
- Energy storage unit 12a has only one subunit and thus only one of a circle different base area.
- the subunits 36a-46a of the energy storage unit 12a are each formed as a pouch cell.
- the subunits 36a-46a each have a flexible cover 80a, 82a (see Figure 4).
- the subunits 36a-46a each have sleeves 80a, 82a designed to be analogous to one another, for which reason only a first subunit 36a and a further subunit 38a will be described in more detail below.
- the sheaths 80a, 82a are each designed to tightly enclose a cell volume.
- the casings 80a, 82a each have a film composite which comprises film layers of different materials.
- the casings 80a, 82a have a coated aluminum foil in the present exemplary embodiment.
- the casings 80a, 82a are each formed locally deformable on a cell surface.
- the sheaths 80a, 82a are each provided to conform to a contact surface.
- the envelopes 80a, 82a are each substantially non-magnetizable.
- the casings 80a, 82a are each formed paramagnetically.
- the shell 80a of a subunit 36a and the shell 82a of an adjacently located subunit are in surface contact with each other in an assembled state. It is conceivable that the energy storage unit 12a comprises a single subunit and has a single envelope.
- the subunits 36a-46a of the energy storage unit 12a have different sizes.
- the subunits 36a-46a have different sized volumes.
- a difference in volumes in the present embodiment is about 60 percent between subunits 38a, 40a of a first one
- Size and subunits 36a, 42a of a further size are about 55 percent between subunits 44a, 46a of a third size and the subunits 36a, 42a of the further size and about 80 percent between the subunits 38a, 40a of the first size and the subunits 44a, 46a of the third size.
- the subunits in the present example an equal width, a different length and a different height.
- the lengths between the subunits 38a, 40a of the first size and the subunits 36a, 42a of the further size differ by about 15 percent.
- the heights deviate from each other by about 55 percent.
- the subunits 36a, 38a, 40a, 42a thus deviate from one another by approximately 55 percent in one direction of extension.
- the housing 56a of the rechargeable battery device 10a has a plurality of bearing areas 58a-66a with different storage space dimensions, which are each provided for storage for a subunit 36a-46a adapted to the respective storage area 58a-66a.
- the housing 56a has in the present embodiment, five storage areas 58a-66a with different storage space dimensions.
- a first of the storage areas 60a and another of the storage areas 62a are respectively provided for subunits 38a, 40a of the first size.
- Two more of the storage areas 58a, 64a are for subunits
- a fifth storage area 66a is disposed at a bottom of the battery device 10a and is provided for two sub-units 44a, 46a of the third size.
- the subunits 36a-46a are each adapted to the dimensions of the bearing areas 58a-62a for which they are intended.
- the rechargeable battery device 10a comprises a functional element 68a.
- the functional element 68a is surrounded in an assembled state by two sides 70a, 72a of the energy storage unit 12a (see FIG.
- the functional element 68a is formed in the present embodiment as a temperature sensor.
- the functional element 68a is designed as an NTC element and is intended to detect a temperature of the energy storage unit 12a, for example to regulate a charging current or a discharge current or to notify the user in critical operating conditions.
- the functional element 68a is in contact with the two opposite sides 70a, 72a
- the functional element 68a is in contact with in each case one of the subunits 38a, 40a of the energy storage unit 12a on two opposite sides 70a, 72a.
- the rechargeable battery device 10a has a cell holder, which comprises a support element 158a.
- the support member 158a is formed in the form of a plate. It is conceivable that the support element 158a is integrally formed with the housing cover 108a or the housing bottom 110a.
- the support member 158a is arranged in a mounted state parallel to the housing base 106a.
- the support element 158a has a recess 160a, which is provided for the functional element 68a.
- An extension of the functional element 68a perpendicular to the housing base side 106a corresponds to a height of the support element 158a.
- the functional element 68a is arranged centrally in the battery device 10a.
- the functional element 68a is arranged centrally relative to a direction in a support element plane perpendicular to the insertion direction 124a of the battery device 10a. It is also conceivable that the functional element 68a is arranged off-center with respect to this direction.
- the functional element 68a is arranged in a mounted state spaced from the housing shell 112a.
- the functional element 68a is arranged at a distance from the housing cover 108a and from the housing bottom 110a.
- the functional element 68a is arranged in each spatial direction by more than 10 percent, relative to an interior extension of the rechargeable battery device 10a in the respective spatial direction, away from the housing shell 112a. It is conceivable that a sub-unit 38a, 40a or a plurality of sub-units 36a-46a arranged adjacent to the functional element 68a each have a depression which is provided for receiving the functional element. It is also conceivable that the rechargeable battery device 10a comprises a plurality of functional elements 68a, which are each surrounded by the energy storage unit 12a in an assembled state of at least two sides.
- the energy storage unit 12 a is as a highly efficient energy storage unit
- the energy storage unit 12a has a gravimetric energy density of about 146 Wh / kg in one mode of operation.
- the energy storage unit 12a has a gravimetric power density of about 580 W / kg in the operating mode.
- the energy storage unit 12a has a voltage density of 1.2 mV / mm 3 in the operating mode.
- the battery device 10a has an operating voltage of about 18 V in the operating mode. In a charged state of the energy storage unit 12a, the battery device 10a has an operating voltage of approximately 18 V at an average load.
- the rechargeable battery device 10a is provided to provide the operating voltage to the electrical interface unit 90a.
- the battery device 10a is intended for this purpose see provide the operating voltage to a power supply of the drive unit 102a of the power tool 86a.
- the subunits 36a-46a of the energy storage unit 12a are each formed as a lithium-ion cell.
- the subunits 36a-46a are each formed as a lithium polymer cell.
- the subunits 36a-46a each have a nominal voltage of about 3.6V.
- FIGS. 6 to 12 show further exemplary embodiments of the invention.
- the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with reference in principle also to the drawings and / or the description of the other exemplary embodiments, in particular those relating to identically named components, in particular with regard to components having the same reference numbers Figures 1 to 5, can be referenced.
- To distinguish the embodiments of the letter a is the reference numerals of the embodiment in Figures 1 to
- FIG. 6 shows a rechargeable battery device 10b with an energy storage unit 12b and a further energy storage unit 14b.
- the battery device 10b is part of a system with a hand tool.
- the hand tool is designed analogously to the preceding embodiment.
- the energy storage units are intended to store electrical energy and to supply a drive unit of the power tool with electrical energy.
- the battery device has analogous to the preceding embodiment, a housing 56b, which is intended to store components of the battery device 10b and protect.
- the housing 56b is designed to store and protect the energy storage units 12b, 14b.
- the housing 56b is formed of a solid plastic.
- the housing 56b has a substantially flat housing base side 106b.
- the housing 56b includes a housing cover and a housing bottom that form a housing shell 112b.
- the rechargeable battery device 10b has a mechanical interface unit and an electrical interface unit for a detachable electrical and mechanical connection with the handheld power tool.
- the mechanical interface unit comprises a spring-loaded latching element 128b, which is provided to latch the battery device 10b in the power tool.
- the locking element 128b is pivotally mounted and protrudes in a locking position on the housing 56b of the battery device 10b out.
- the energy storage units 12b, 14b of the battery device 10b are designed as highly functional energy storage units 12b, 14b.
- the energy storage units 12b, 14b are formed as a highly integral energy storage units 12b, 14b and each fill a space provided for the respective energy storage unit 12b, 14b by about 98%.
- the energy storage units 12b, 14b each include a plurality of subunits 36b-54b.
- the energy storage units each comprise five subunits 36b-54b in the present embodiment.
- the energy storage units 12b, 14b are formed as high-efficiency energy storage units 12b, 14b analogous to the preceding embodiment.
- the subunits 36b-54b are formed in a prismatic manner analogous to the preceding embodiment.
- the subunits 36b-54b each have a base surface 16b-34b, which is aligned in each case in an assembled state parallel to the housing base side 106b of the battery device 10b.
- the housing 56b has two separate compartments 162b, 164b.
- Each of the energy storage units 12b, 14b is arranged in a mounted state in each of the compartments 162b, 164b.
- the subunits 36b-54b each form a stack.
- the stacking directions are arranged parallel to each other.
- the stacking directions are each arranged perpendicular to the housing base side 106b.
- the subunits 36b-54b of the energy storage units 12b, 14b are formed differently in size, analogous to the preceding embodiment.
- the subunits 36b-54b have different sized volumes.
- the subunits 36b-54b face each other at least in an extension direction.
- the housing 56b of the rechargeable battery device 10b has, analogously to the preceding exemplary embodiment, a plurality of storage areas with different storage space dimensions, which in each case lead to storage for a subunit 36b-54b adapted to the respective storage area is provided.
- the battery device 10b comprises a functional element 68b.
- the functional element 68b is surrounded by the energy storage units 12b, 14b in a mounted state of four sides 70b, 72b, 74b, 76b.
- the functional element 68b is formed in the present embodiment as a temperature sensor.
- the functional element 68b is in contact with the energy storage units 12b, 14b.
- the functional element 68b is surrounded by four sides 70b, 72b, 74b, 76b of sub-units 38b, 40b, 48b, 50b of the energy storage units 12b, 14b.
- the rechargeable battery device 10b has a cell holder which comprises a horizontal support element 158b and a vertical support element 166b.
- the support members 158b, 166b are each formed as a plate. It is conceivable that the support elements 158b, 166b are each formed in one piece with the housing shell 112b.
- the vertical support member 166b has a plate plane which is perpendicular to the housing base 106b.
- the horizontal support member 158b has a plate plane which is parallel to the housing base 106b.
- the support elements 158b, 166b each have a recess 160b, 168b, which is provided for the functional element 68b.
- the functional element 68b is arranged centrally in the battery device 10b.
- Function element 68b is arranged in the present embodiment in a plane of symmetry of the battery device 10b.
- the plane of symmetry is arranged perpendicular to the housing base side 106b. It is conceivable that the functional element 68b is arranged outside the plane of symmetry. It is also conceivable that only one of the support elements 158b, 166b has a recess for the functional element 68b and the functional element 68b is arranged at a distance from the further support element.
- the functional element 68b is arranged in a mounted state spaced from the housing shell 112b.
- FIG. 7 shows a further exemplary embodiment of a rechargeable battery device 10c with an energy storage unit 12c.
- the battery device 10c is part of a system with a hand tool.
- the hand tool is designed analogously to the preceding embodiment.
- the energy storage unit 12c is intended to to store electrical energy and supply a drive unit of the power tool with electrical energy.
- the battery device 10c has, analogously to the preceding embodiment, a housing 56c, which is provided to store and protect components of the battery device 10c.
- the housing 56c is designed to store and protect the energy storage unit 12c.
- the housing 56c is formed of a solid plastic.
- the housing 56c has a substantially planar housing base side 106c.
- the housing 56c includes a housing cover and a housing bottom, which form a housing shell 112c.
- the rechargeable battery device 10c has a mechanical interface unit and an electrical interface unit for a detachable electrical and mechanical connection to the handheld power tool.
- the mechanical interface unit comprises a spring-loaded detent element 128c, which is provided to latch the rechargeable battery device 10c in the handheld power tool.
- the latching element 128c is pivotally mounted and projects beyond the housing 56c of the battery device 10c in a latching position.
- the energy storage unit 12c of the battery device 10c is designed as a highly functional energy storage unit 12c.
- the energy storage unit 12c is designed as a highly integral energy storage unit 12c.
- the energy storage unit 12c includes a plurality of subunits 36c-44c.
- the energy storage unit 12c in the present embodiment comprises five subunits 36c-44c.
- the energy storage unit 12c is formed as a highly efficient energy storage unit 12c analogous to the preceding embodiment.
- the subunits 36c-44c are each formed like a prism in analogy to the preceding embodiment.
- the subunits 36c-44c are cuboidal.
- the subunits 36c-44c each have a base surface 16c-24c which, in contrast to the preceding embodiments, is aligned in each case in an assembled state perpendicular to the housing base side 106c of the rechargeable battery device 10c.
- the subunits 36c-44c form a stack.
- the stacking direction is arranged parallel to the housing base side 106c.
- the subunits 36c-44c formed analogous to each other.
- the subunits 36c-44c have the same shape and volume.
- the battery device 10c comprises a functional element 68c.
- the functional element 68c is in an assembled state of two sides 70c, 72c of the
- the functional element 68c is designed as a temperature sensor in the present exemplary embodiment.
- the functional element 68c is in contact with a respective one of the subunits 36c-44c of the energy storage unit 12c on two opposite sides 70c, 72c.
- a shape of the functional element 68c in the present embodiment corresponds to the shape of a subunit 36c-44c.
- the functional element 68c and the subunits 36c-44c each have the same volume and dimensions. It is conceivable that the functional element 68c has a volume which corresponds to a multiple of a volume of a subunit 36c-44c. For example, one of the functional element 68c occupied
- Room correspond to a space occupied by two subunits 36c-44c.
- the functional element 68c is arranged in an interior of the stack. It is conceivable that the functional element 68c is arranged on an edge of the stack of the subunits 36c-44c.
- the functional element 68c is arranged in a mounted state in a spatial direction on two sides spaced from the housing shell 112c. It is conceivable that the energy storage unit 12c has a plurality of stacks of subunits 36c-44c. It is also conceivable that the functional element 68c of three, four, five or six sides 70c, 72c is surrounded by the energy storage unit 12c.
- the functional element 68c is arranged in two spatial directions or in three spatial directions, each spaced from the housing shell by two sides 70c, 72c. It is conceivable that the rechargeable battery device has a plurality of functional elements 68c, which together or individually have a volume and a shape which correspond in each case to a volume and the shape of a subunit 36c-44c.
- FIG. 8 shows a further embodiment of a rechargeable battery device 10d, which is intended to store energy and to supply the drive unit of a handheld power tool with electrical energy.
- the rechargeable battery device 10d has an energy storage unit 12d, which is intended to provide electrical power Save energy and provide a drive unit of the power tool with electrical energy.
- the battery device 10d further has, analogously to the preceding exemplary embodiment, a housing which is provided to store and protect components of the battery device 10d.
- the housing is intended to store and protect the energy storage unit 12d.
- the housing is formed in the present embodiment of a solid plastic.
- the housing has a substantially flat housing base side 106d.
- the housing comprises a housing cover 108d and a housing bottom llOd, which form a housing shell.
- the housing shell surrounds the energy storage unit in an assembled state.
- the rechargeable battery device 10d has a mechanical interface unit 88d and an electrical interface unit 90d for a releasable electrical and mechanical connection to the handheld power tool.
- the interface units 88d, 90d are opposite to one of the housing base side
- the battery device 10d has an insertion direction 124d.
- the insertion direction 124d is aligned parallel to the housing base 106d in the present embodiment.
- the housing is stepped on the interface side 114d. In the present embodiment, the housing has a
- Step transition two guide elements 126d which are each formed as a groove in the insertion direction 124d.
- the interface unit 88d comprises a spring-loaded latching element 128d, which is provided for latching the battery device 10d to the handheld power tool.
- the interface unit 88d has an unlocking element 130d.
- the unlocking element 130d is connected to the latching element 128d and provided to pivot the latching element 128d against a spring force and to sink it into the interface side 114d for unlocking.
- the interface unit comprises an electrical contact unit 132d, which has contact elements designed as contact springs in the present exemplary embodiment.
- the energy storage unit 12d of the rechargeable battery device 10d is designed analogously to the preceding exemplary embodiment as a highly functional energy storage unit 12d.
- the energy storage unit 12d is designed as a highly integral energy storage unit 12d and fills one for the energy storage unit 12d provided about 98 percent of space.
- the energy storage unit 12d is formed analogously to the preceding embodiment as a highly efficient energy storage unit 12d.
- the energy storage unit 12d includes a plurality of subunits 36d-46d.
- the subunits 36d-46d are each formed prism-shaped.
- the subunits 36d-46d each have a base 16d-26d.
- the base surfaces 16d-26d are each aligned in an assembled state parallel to the housing base side 106d of the battery device 10d.
- the battery device 10d has a cell holder which comprises a support element 158d.
- the support element 158d is formed in the form of a plate.
- the support member 158d is arranged
- the subunits 36d-46d of the energy storage unit 12d are each formed as a pouch cell.
- the subunits 36d-46d each have a flexurally soft shell 80d, 82d.
- the sheaths 80d, 82d of the subunits 36d-46d are designed to be analogous to one another, for which reason only the sheaths of a first subunit and a further subunit will be described in more detail below.
- the sheaths 80d, 82d are each designed to tightly enclose the cell volumes.
- the sheaths 80d, 82d are each formed locally deformable.
- the sheaths 80d, 82d are each intended to conform to a contact surface.
- the sheaths 80d, 82d are each substantially non-magnetizable.
- the sheaths 80d, 82d are each formed paramagnetically.
- the rechargeable battery device 10d comprises a charging means 78d, which is provided for a wireless energy transfer into the at least one energy storage unit 12d.
- the charging means 78d comprises an induction coil in the present embodiment.
- the induction coil is designed as a secondary coil and provided to cooperate with a primary coil not shown in detail to a wireless energy transmission, whereby energy for a charging operation of the energy storage unit 12 d is transferred to the battery device lOd.
- the charging means 78d is disposed on the housing bottom IlOd. It is conceivable that the charging means 78d is arranged on another side of the housing.
- the charging means 78d is flat and abuts the housing bottom IlOd.
- the subunits 36d-46d form a stack out.
- the stacking direction is aligned perpendicular to the housing base 106d.
- the stack has an edge-side subunit 36d on an upper side and two peripheral subunits 44d, 46d on an underside.
- the two marginal sub-units 44d, 46d on a lower side of the stack are in surface-mounted contact with the loading means 78d in an assembled state.
- the sheaths 80d, 82d of the peripheral subunits 44d, 46d are in surface contact with the loading means 78d in the mounted state.
- FIG. 9 shows a further exemplary embodiment of the battery device 10e.
- the akkuvoroplasty lOe is analogous to the previous embodiments as
- the battery device 10e is formed in the sockeiförmig in contrast to the previous embodiments.
- the cordless device 10e comprises a foot, a central area and a shaft area.
- Rechargeable battery device 10e has an energy storage unit 12e which is intended to store electrical energy and to supply a drive unit of the handheld power tool with electrical energy.
- the rechargeable battery device 10e also has a housing 56e, which is provided to store and protect components of the rechargeable battery device 10e.
- the housing 56e is designed to store and protect the energy storage unit 12e.
- the housing 56e is formed in the present embodiment of a solid plastic.
- the housing 56e has a substantially planar housing base side 106e.
- the housing 56e further includes a housing shell 112e which surrounds the energy storage unit 12e in an assembled state.
- the battery device 10e has, analogously to the preceding exemplary embodiments, a mechanical interface unit and an electrical interface unit for a detachable electrical and mechanical connection to the handheld power tool.
- the interface unit is arranged on one of the housing base side 106e opposite the interface side 114e of the battery device 10e.
- the handle of the power tool has a receptacle which corresponds to the interface unit of the battery device 10e.
- the interface unit and the receptacle of the handle are intended to be connected to each other by means of an insertion movement.
- the battery device lOe has an insertion direction 124e. In contrast to the preceding embodiments, the insertion direction 124e is aligned perpendicular to the housing base 106e.
- the housing 56e has guide elements, which are not illustrated in more detail, and which are respectively aligned substantially perpendicular to the housing base side 106e.
- the energy storage unit 12e of the battery device 10e is designed as a highly functional energy storage unit 12e.
- the energy storage unit 12e is designed as a highly integral energy storage unit 12e and fills a space provided for the energy storage unit 12e by approximately 98 percent.
- Energy storage unit 12e is designed as a highly efficient energy storage unit 12e.
- the energy storage unit 12e includes a plurality of subunits 36e-50e.
- the energy storage unit 12e comprises eight subunits 36e-50e in the present embodiment.
- the subunits 36e-50e are each prism-shaped.
- the subunits 36e-50e each have a base area 16e-30e.
- the bases 16e-30e each extend along a main direction of extension of the subunits 36e-50e.
- the base surfaces 16e-30e of the various subunits 36e-50e are arranged parallel to one another in an assembled state.
- the base surfaces 16e-30e are aligned parallel to the housing base side 106e of the battery device 10e.
- Subunits 36e-50e form a stack.
- the stacking direction is aligned perpendicular to the housing base 106e.
- the stack has an edge-side subunit 36e on an upper side and a peripheral subunit 50e on a lower side.
- the marginal subunits 36e, 50e are in a mounted state respectively along their main extension in surface contact with the housing shell 112e.
- the bases 16e-30e are each different from a circle.
- the bases 16e-30e are each formed as a polygon.
- the subunits 36e, 50e have different shapes.
- the subunits 36e, 50e have three different shapes.
- a group of subunits 48e, 50e is in the form of a flat cuboid.
- Another group of subunits 44e-46e is in the form of a high cuboid.
- a third Subunit group 36e-42e is in the form of a general prism and has a triangular base 16e-22e (see Figure 10).
- the subunits 36e-50e of the energy storage unit 12e have different sizes. Subunits 36e-50e have different sized volumes. The subunits 36e-50e have a different width, a different length and a different height in the present embodiment. In the present embodiment, the subunits 36e-50e of a group are respectively connected in parallel with each other. The groups are connected in series. Subunits 36e-50e each have an operating voltage of 3.6V. The battery device 10e has an operating voltage of 10.8V.
- the subunits 36e-50e of the energy storage unit 12e are each designed as a pouch cell analogous to the preceding embodiments.
- the subunits 36e-50a each have a flexurally soft cover 80e, 82e. Two of the sheaths 80e, 82e are provided with reference numerals in FIG. 9 and FIG. The cases 80e, 82e the
- Subunits 36e-50e are each formed analogously to the shells of the subunits in the preceding embodiments.
- the subunits 36e-50e each have two contact means 170e-184e which are respectively provided for an electrical connection of the respective subunit 36e-50e (see FIG.
- the subunits 36e-50e each comprise at least two electrodes, one of which is electrically connected in each case to an interior of the respective envelope 80e-82e, each with a contact means 170e-184e.
- the contact means 170e-184e are each provided for electrical contacting of the subunits 36e-50e, and have different electrical polarity.
- the contact means 170e-184e are led out of the sheath in the first group and the second group of subunits 44e-50e, each at a same edge of the base 24e-30e.
- the contact means 170e-184e are disposed on two mutually adjacent edges.
- the contact means 170e-184e are led out of the sheath 80e, 82e on two adjacent edges 186e-200e of the base 16e-24e.
- the subunits 36e-42e are connected in series by means of the contact means 172e-182e.
- one of the contact means 174e, 178e, 182e of a subunit 38e, 40e, 42e is in an assembled state with a contact means 172e, 176e, 180e an overlying subunit 36e, 38e, 40e connected.
- FIG. 10 shows the subunits 36e-42e in an assembly step.
- the housing 56e of the rechargeable battery device 10e has a plurality of bearing areas 58e-62e with different storage space dimensions, which are each provided for mounting for a subunit 36e-50e adapted to the respective storage area 58e-62e.
- the storage areas 58e-62e have a different shape.
- the housing 56e has in the present embodiment, three storage areas 58e-62e with different Lagerraumab- measurements.
- the subunits 36e-50e are each adapted to the dimensions of the bearing areas 58e-62e for which they are intended.
- FIG 11 shows another embodiment of the battery device lOf.
- the battery device lOf is analogous to the preceding embodiments as part of a system with a hand tool and designed to store energy and to provide the hand tool with electrical energy.
- the rechargeable battery device 10f has an energy storage unit 12f, which is provided to store electrical energy and to supply a drive unit of the hand-held power tool with electrical energy.
- the battery device 10f also has a housing 56f which is provided to store and protect components of the battery device 10f.
- the housing 56f is designed to store and protect the energy storage unit 12f.
- the housing 56f is formed in the present embodiment of a solid plastic.
- the housing 56f is formed in the present embodiment approximately threefold symmetrical.
- the energy storage unit 12f has three subunits 36f, 38f, 40f designed to be analogous to one another. A number of the subunits 36f, 38f, 40f correspond to a balance of the symmetry of the housing 56f.
- the rechargeable battery device 10f has a mechanical interface unit (not shown in more detail) and an electrical interface unit for a detachable electrical and mechanical connection to the handheld power tool.
- the energy storage unit 12f of the battery device 10f is designed as a highly functional energy storage unit 12f.
- the energy storage unit 12f is configured as a highly efficient energy storage unit 12f.
- the subunits 36f, 38f, 40f are each in the form of a straight prism.
- the subunits 36f, 38f, 40f each have a base 16f, 18f, 20f.
- the subunits 36f, 38f, 40f are designed to be analogous to one another, for which reason only a first of the subunits 36f will be described in more detail below.
- the base 16f of the subunit 36f is mirror-symmetrical and has an axis of symmetry.
- the base 16f has a stepped edge.
- the base 16f is formed as a concave polygon.
- the base 16f has twelve outwardly directed corners 202f and eight inwardly directed corners 204f.
- the outwardly directed corners 202f are arranged on an oval.
- the inward corners 204f are disposed on another oval.
- the base 16f is composed of a plurality of adjacent flat rectangles 206f-214f.
- the base 16f is composed of five flat rectangles 206f-214f.
- the rectangles 206f-214f have different widths and lengths.
- a central rectangle 210f has a length which is larger than the lengths of the further rectangles 206f, 208f, 212f, 214f, respectively.
- the marginal rectangles 206f, 214f each have a smaller length than the respectively adjacent rectangles 208f, 212f.
- the subunit 36f is formed as a lithium-ion cell.
- the subunit 36f is formed as a lithium-ion cell.
- the subunit 36f is formed as a lithium-ion cell. The subunit
- the subunit 36f is formed as a pouch cell.
- the subunit 36f has a plurality of layers of anodes, cathodes, separators, and collectors. The layers form a stack.
- the stacking direction is arranged parallel to the base 16f in the present embodiment.
- the stacking direction is arranged in the direction of a width of the rectangles 206f-214f, from which the base surface 16f is assembled.
- the subunit 36f has a shell 80f.
- the sheath 80f is bendable.
- the sheath 80f is intended to tightly enclose a cell volume.
- the sheath 80f has a composite film comprising layers of different materials.
- the sheath 80f has a coated aluminum foil in the present embodiment.
- the shell surface is formed locally deformable.
- the sheath 80f is substantially non-magnetizable.
- the shell 80f is paramagnetic.
- the symmetry axes of the base surfaces 16f, 18f, 20f of the subunits 36f, 38f, 40f intersect at a point of a cross section through the rechargeable battery device 10f.
- the symmetry axes are each arranged on one of the axes of symmetry of the housing 56f.
- the subunits 36f, 38f, 40f are each arranged rotated 120 degrees to each other.
- the housing 56f of the rechargeable battery device 10f has a plurality of bearing areas 58f, 60f, 62f, which are each provided for mounting for a subunit 36f, 38f, 40f adapted to the respective bearing area 58f, 60f, 62f.
- the bearing portions 58f, 60f, 62f have the same shape in the present embodiment.
- the housing 56f has three bearing portions 58f, 60f, 62f of corresponding dimensions in the present embodiment.
- the subunits 36f, 38f, 40f are each adapted to the dimensions of the bearing areas 58f, 60f, 62f for which they are intended.
- FIG. 12 shows a further embodiment of the battery device 10g.
- the rechargeable battery device 10g is designed analogously to the preceding exemplary embodiments as part of a system with a handheld power tool and is provided to store energy and to supply the handheld power tool with electrical energy.
- the battery device 10g analogous to the preceding embodiment, an energy storage unit 12g, which are provided to store electrical energy and to provide a drive unit of the power tool with electrical energy.
- the rechargeable battery device has, analogously to the preceding exemplary embodiment, a housing 56g, which is provided to store and protect components of the rechargeable battery device 10g.
- the housing 56g is formed analogously to the preceding embodiment.
- the energy storage unit 12g of the battery device 10g is designed as a highly functional energy storage unit 12g.
- the energy storage unit 12g is formed as a highly efficient energy storage unit 12g.
- the energy storage unit 12g comprises six subunits 36g-46g unlike the previous embodiment.
- the battery device 10g has three pairs 216g, 218g, 220g of subunits 36g-46g.
- Subunits 36g-46g are arranged in pairs.
- the pairs 216g, 218g, 220g are each formed analogously, which is why only a first of the pairs 216g will be described in more detail below.
- the subunits 36g, 38g are each in the form of a straight prism.
- the subunits 36g, 38g each have a base area 16g, 18g.
- the base surfaces 16g, 18g of the subunits 36g, 38g are each mirror-symmetrical and each have an axis of symmetry.
- the base surfaces 16g, 18g each have a stepped edge.
- the bases 16g, 18g are each formed as a concave polygon.
- the base 16g, 18g of a first of the subunits 36g has six outboard corners 202g and two inwardly directed corners 204g.
- the base 18g of another of the subunits 38g has eight outwardly directed corners 222g and four inwardly directed corners 224g.
- the bases 16g, 18g are each composed of a plurality of adjacent flat rectangles 206g-214g.
- the base 16g of the first subunit 36g is composed of two flat rectangles 206g, 208g.
- the base 18g of the second sub-unit 38g is composed of three flat rectangles 210g, 212g, 214g.
- the rectangles 206g-214g have different widths and lengths.
- a marginal rectangle 208g, 210g has a length which is greater than the lengths of the other rectangles.
- a further marginal rectangle 206g, 214g has a length which is smaller than the lengths of the further rectangles 208g-212g.
- the subunits 36g, 38g are each formed as a lithium-ion cell.
- the subunits 36g, 38g are each formed as a pouch cell.
- the subunits 36g, 38g each have a plurality of layers of anodes, cathodes, separators, and collectors. The layers form a stack.
- the stacking direction is arranged parallel to the base surface 16g, 18g in the present embodiment.
- the stacking direction is arranged in the direction of a width of the rectangles 208g-212g, from which the base surfaces 16g, 18g are respectively assembled.
- the subunits 36g, 38g each have a shell 80g, 82g, which is formed analogously to the shell of the subunits in the preceding embodiment.
- the axes of symmetry of the base surfaces 16g, 18g of the subunits 36g, 38g coincide.
- the axes of symmetry of the base surfaces 16g, 18g of the subunits 36g, 38g intersect at one point.
- the symmetry axes are each arranged on one of the axes of symmetry of the housing 56 g.
- the pairs 216g, 218g, 220g are each rotated 120 degrees to each other.
- the housing 56g of the rechargeable battery device 10g has a plurality of bearing areas 58g, 60g, 62g, each of which is provided for mounting a subunits 36g-46g adapted to the respective bearing area 58g, 60g, 62g.
- the bearing portions 58g, 60g, 62g have mutually corresponding shapes in the present embodiment.
- the housing 56g has in the present embodiment, three bearing portions 58g, 60g, 62g with corresponding dimensions.
- the subunits 36g-46g are each adapted to the dimensions of the bearing areas 58g, 60g, 62g for which they are intended.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014224575.3A DE102014224575A1 (de) | 2014-12-02 | 2014-12-02 | Akkuvorrichtung |
| PCT/EP2015/075063 WO2016087132A1 (de) | 2014-12-02 | 2015-10-29 | Akkuvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3227941A1 true EP3227941A1 (de) | 2017-10-11 |
Family
ID=54365238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15787989.1A Withdrawn EP3227941A1 (de) | 2014-12-02 | 2015-10-29 | Akkuvorrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170331083A1 (de) |
| EP (1) | EP3227941A1 (de) |
| CN (1) | CN107004799A (de) |
| DE (1) | DE102014224575A1 (de) |
| WO (1) | WO2016087132A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3161899A4 (de) | 2014-06-30 | 2017-12-27 | Black & Decker Inc. | Batteriepack für schnurlose elektrowerkzeuge |
| DE102017202163A1 (de) * | 2017-02-10 | 2018-08-16 | Robert Bosch Gmbh | Akkuvorrichtung |
| DE102017217503A1 (de) * | 2017-09-29 | 2019-04-04 | Robert Bosch Gmbh | Akkupack |
| DE102018109209A1 (de) * | 2018-04-18 | 2019-10-24 | Metabowerke Gmbh | Akkupack und Elektrohandwerkzeuggerät |
| EP3588607A1 (de) * | 2018-06-26 | 2020-01-01 | Hilti Aktiengesellschaft | Akkupack mit wenigstens einer pouchzelle |
| WO2021184044A1 (en) * | 2020-03-10 | 2021-09-16 | Black & Decker Inc. | Cordless power tool system compatible with multiple battery packs |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3300181A1 (de) * | 2001-07-25 | 2018-03-28 | Sony Corporation | Strukturen von endgeräten und zu ladende komponente |
| US6972544B2 (en) * | 2003-10-14 | 2005-12-06 | Black & Decker Inc. | Apparatus for interconnecting battery cells in a battery pack and method thereof |
| US8026693B2 (en) * | 2007-10-18 | 2011-09-27 | Wi.U, Llc | Induction charger for portable battery-powered devices |
| DE102008001286A1 (de) * | 2008-04-21 | 2009-10-22 | Robert Bosch Gmbh | Energiespeichermodul sowie Elektrowerkzeug mit mindestens einem Energiespeichermodul |
| DE102008040061A1 (de) * | 2008-07-02 | 2010-01-07 | Robert Bosch Gmbh | Elektrowerkzeugmaschine |
| DE102009029411A1 (de) * | 2009-09-14 | 2011-03-17 | Robert Bosch Gmbh | Handwerkzeugakkulademittel |
| JP5582397B2 (ja) * | 2010-08-31 | 2014-09-03 | 日立工機株式会社 | 電動工具及び電動工具に用いられる電池パック |
| JP2013094877A (ja) * | 2011-10-31 | 2013-05-20 | Hitachi Koki Co Ltd | 電動工具 |
| CN103474710A (zh) * | 2012-06-07 | 2013-12-25 | 深圳市海盈科技有限公司 | 锂离子电池组及锂离子电池组性能监测办法 |
| KR20130137972A (ko) * | 2012-06-08 | 2013-12-18 | 삼성메디슨 주식회사 | 서브 배터리팩, 이들을 구비하는 배터리팩, 이들을 사용하는 휴대용 초음파 진단장치, 및 이들이 위치하는 카트 |
| CN203813480U (zh) * | 2014-04-04 | 2014-09-03 | 杭州信多达电器有限公司 | 一种无线充电锂电池 |
-
2014
- 2014-12-02 DE DE102014224575.3A patent/DE102014224575A1/de not_active Withdrawn
-
2015
- 2015-10-29 US US15/526,066 patent/US20170331083A1/en not_active Abandoned
- 2015-10-29 CN CN201580065358.5A patent/CN107004799A/zh active Pending
- 2015-10-29 EP EP15787989.1A patent/EP3227941A1/de not_active Withdrawn
- 2015-10-29 WO PCT/EP2015/075063 patent/WO2016087132A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20170331083A1 (en) | 2017-11-16 |
| DE102014224575A1 (de) | 2016-06-02 |
| WO2016087132A1 (de) | 2016-06-09 |
| CN107004799A (zh) | 2017-08-01 |
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