WO2015055536A1 - Unité de stockage d'énergie pour machine-outil portable - Google Patents

Unité de stockage d'énergie pour machine-outil portable Download PDF

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Publication number
WO2015055536A1
WO2015055536A1 PCT/EP2014/071782 EP2014071782W WO2015055536A1 WO 2015055536 A1 WO2015055536 A1 WO 2015055536A1 EP 2014071782 W EP2014071782 W EP 2014071782W WO 2015055536 A1 WO2015055536 A1 WO 2015055536A1
Authority
WO
WIPO (PCT)
Prior art keywords
energy storage
contact means
housing
storage unit
storage units
Prior art date
Application number
PCT/EP2014/071782
Other languages
German (de)
English (en)
Inventor
Wolf Zahn
Thilo Jochen KOEDER
Anja Koenig
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2015055536A1 publication Critical patent/WO2015055536A1/fr

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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • 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
    • 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
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • 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 an energy storage unit for a hand-held power tool, with a housing having a flat housing base side, and with at least one electrical contact means, which on the
  • State has a contacting plane, which is arranged parallel to the housing base side.
  • an "energy storage unit” is to be understood as meaning, in particular, an electrical energy storage unit, preferably an electrochemical energy storage unit, preferably a rechargeable energy storage unit, for example an accumulator cell, in particular a lithium polymer cell. that extends at least in one direction along a main extension direction of the housing of the energy storage unit.
  • the housing base side is formed as a largest side of the housing, and is for example formed as the base side of a cuboid, which defines a basic shape of the housing.
  • the housing base defines a housing base plane at least in an area where the contact means exits.
  • a “contact means” should be understood as meaning, in particular, a means which is provided to electrically connect one electrode of the energy storage unit to at least one connection contact for the energy storage unit outside the housing the at least one connection contact has a profile which is arranged parallel to the housing base plane in an area in which the contact means exits, and preferably at least immediately adjacent to the housing base plane and particularly preferably in the housing base plane
  • a "contacting plane” is to be understood as meaning, in particular, a plane in which the at least one contact means is located st is disposed in a region of the terminal.
  • the term "provided” is to be understood to mean in particular specially designed and / or equipped.Assuming that an object is intended for a specific function should in particular mean that the object fulfills this specific function in at least one application and / or operating state and / or executes.
  • the at least one electrical contact means is bent into the contacting plane at least in an assembled state.
  • a particularly efficient contacting step of the energy storage unit can be achieved during assembly and a short assembly time.
  • the profile of the contact means has an orientation which changes along the course by 180 degrees or in the sum of 0 degrees.
  • the at least one electrical contact means is at least twice bent at least in an assembled state. As a result, a required installation space can be further reduced and a particularly compact arrangement of the energy storage unit can be achieved.
  • two-fold curved should be understood in particular to mean that the profile of the contact means has at least two arcs which are preferably separated from one another by a straight section of the profile or which have different directions of curvature In this way, a particularly advantageous arrangement of the contact means for an efficient contacting step can be achieved.
  • S-shaped should in this context be understood to mean in particular that the contact means successively in two opposite Directions by an equal angle, preferably with a counter curvature, is bent.
  • the housing has a housing center, relative to an extension perpendicular to the housing base side, which at least in an assembled state spatially between the housing base side and the
  • a "housing center” should be understood as meaning, in particular, a planar area which has a central location between the housing base side and one of the housing areas
  • Housing base opposite housing cover side arranged level includes.
  • the housing center has an extent perpendicular to the housing base side of 10%, preferably of 20% and particularly preferably of 30% based on a total extension of the housing of the energy storage unit in the direction perpendicular to the housing base.
  • the energy storage unit has at least one mounting unit, which is provided to fix the at least one contact means in the contacting plane.
  • a particularly time-saving installation of the energy storage cell can be achieved.
  • the assembly unit is provided to store the energy storage unit in an assembled state and / or to arrange it relative to further energy storage units ,
  • the mounting unit has at least one guide surface for the at least one contact means, which is provided for the deformation of the contact means in the contacting plane.
  • the at least one contact means can be deformed particularly time-saving in an assembly step in the contacting plane, in which the energy storage unit is connected to the mounting unit.
  • An additional assembly step for the deformation and / or arrangement of the contact means can be omitted.
  • the mounting unit has a guide channel with a side on which the guide surface is arranged.
  • the energy storage unit comprises at least one further contact means, which has a further contacting level.
  • the contact means in a mounted state at a defined distance from each other. It can be a particularly easy and time-saving
  • a “further contact means” should be understood as meaning, in particular, a means which is designed analogously to the first contact means and is intended to electrically connect a further electrode of the energy storage unit to at least one further connection contact outside the housing Contact means different electrical polarity and are formed as a positive and as a negative contact means
  • the further contacting plane is arranged parallel offset to the housing base side.
  • the contacting planes of the at least two contact means enclose the housing base side between them.
  • the phrase "enclose the housing base between themselves” should be understood in particular to mean that the contacting NEN are arranged on different sides of the housing base side and spaced from each other.
  • a cordless device for a hand tool with at least two energy storage units each having a housing, each having a flat housing base side, and in each case at least one electrical contact means, which exits respectively on the housing base side, wherein the contact means at least in an assembled state
  • Have Girie- tion level which is arranged parallel to the housing base in each case.
  • a “rechargeable battery device” should be understood to mean, in particular, a device which is provided for supplying energy to a machine, in particular a hand-held power tool.
  • the rechargeable battery device has a dimensionally stable housing, which is provided for a separable electrical and mechanical connection to the machine It is also conceivable that the battery device is firmly integrated in a housing of the machine.
  • the contact means of the at least two energy storage units of the cordless device have a common contacting level.
  • the energy storage units can be coupled to one another mechanically and / or electrically in a particularly simple manner. It is conceivable that in each case positive contact means of the energy storage units on the one hand and each negative contact means of the energy storage units on the other hand have a common contacting level. It is also conceivable that the contact means as a whole have a common contacting plane.
  • the battery device has a connection unit for electrical contacting of the contact means of the energy storage units, which is formed at least partially integral with mounting units of the at least two energy storage units.
  • a connection unit for electrical contacting of the contact means of the energy storage units which is formed at least partially integral with mounting units of the at least two energy storage units.
  • in one piece is meant, in particular, at least materially bonded, for example by a welding process, an adhesion process, an injection process and / or another process that appears expedient to the person skilled in the art, and / or advantageously shaped in one piece, for example by a production from a casting and / or by a production in a single or multi-component injection molding process and advantageously from a single blank.
  • connection unit has at least one conductor carrier, which is passed through energy storage units, at least in an assembled state.
  • the conductor carrier can form surface contact points together with the contact elements, for example in a welding process. It can be formed particularly robust contact points, which are particularly insensitive to vibration, for example.
  • the contact points can be arranged in an assembled state between the energy storage units and particularly well protected against external influences, such as conductive particles such as metal shavings.
  • the term "between” should be understood to mean, in particular, spatially between two energy storage units adjacent in a stacking direction
  • the stacking direction is preferably arranged perpendicular to the housing base sides of the energy storage units
  • the assembly unit may comprise positioning elements, such as spacers, ribs, supports or Having clips, whereby a particularly simple and efficient arrangement of the conductor carrier can be achieved.
  • a handheld power tool having at least one rechargeable battery device which comprises at least two energy storage units, each having a housing which has a flat housing base side, and in each case at least one electrical contact means, which emerges on the housing base side, have, wherein the contact means have at least in a mounted state a contacting plane, which is arranged in parallel to the housing base side in parallel.
  • the energy storage unit according to the invention should not be limited to the application and embodiment described above.
  • the energy storage unit according to the invention can have a number deviating from a number of individual elements, components and units specified herein for fulfilling a mode of operation described herein.
  • FIG. 1 is a schematic exploded view of a battery device with an energy storage unit according to the invention
  • FIG. 2 shows a perspective view of the energy storage unit
  • FIG. 3 shows a section along a longitudinal axis of the energy storage unit
  • connection unit 9 is a schematic view of a larger number of energy storage units connected to the connection unit.
  • FIG. 12 shows an energy storage unit of a further exemplary embodiment with contact means which are each arranged in a contacting plane
  • Fig. 13 and a schematic view of an arrangement of energy storage units in an assembled state.
  • FIG. 1 shows a rechargeable battery device 26a for a handheld power tool.
  • the battery device 26a is provided for a power supply of the hand tool. It is conceivable that the battery device 26a is provided for the power supply of another electric machine.
  • the battery device 26a has a plurality of energy storage units 10a, 12a.
  • FIGS. 2 to 5 show an energy storage unit 10a of the battery device 26a.
  • the energy storage units 10a, 12a of the battery device are designed to be analogous to one another, which is why only one of the energy storage units 10a is described in more detail below in the following.
  • the energy storage unit 10a is intended to receive electrical energy in a charging process, to store the energy and, if necessary, to deliver it in an operating state of the handheld power tool.
  • the energy storage unit 10a is formed as a lithium polymer cell and has a rated voltage of 3.6 volts.
  • the energy storage unit 10a has a housing 14a with a flat, rectangular housing base side 20a.
  • the energy storage unit 10a has a cuboid base body 30a with a length 32a, a width 34a and a height 36a.
  • the housing 14a has a housing cover side 38a lying opposite the housing base side 20a and parallel to the housing cover side 38a
  • Housing base 20 a is arranged. It is conceivable for the main body 30a to have another basic shape which appears reasonable to the person skilled in the art, and for the housing base 20a to be triangular or trapezoidal, for example.
  • the height 36a is arranged in a direction perpendicular to the casing base 20a.
  • the width 34a and the length 32a are in a plane of
  • the main body 30a has two end faces 42a, which are each delimited by edges in the direction of the height 36a and the width 34a of the housing 14a. A first of the end faces 42a is visible in FIGS. 2 and 3.
  • the main body 30a has two longitudinal sides which are bounded respectively by edges in the direction of the length 32a and the height 36a of the housing 14a.
  • the casing 14a has a casing film 40a formed of plastic-coated aluminum foil. It is conceivable that the casing film 40a is formed of another suitable material.
  • the main body 30a has four base side edges on the housing base side 20a. At three of the basic side edges, the housing 14a extends in each case in a fold 44a, 46a, 48a, ie the housing 14a has three folds 44a, 46a, 48a. It is conceivable that the housing 14a has four folds. It is also conceivable that the housing 14a has a different basic shape, for example a non-angular basic shape and correspondingly fewer folds.
  • the housing 14a preferably has at least one fold 46a.
  • the energy storage unit 10a comprises two electrical contact means 16a, 18a, which emerge on the housing base side 20a.
  • the contact means 16a, 18a are formed as sheet metal strips and have a strip pattern.
  • the contact means 16a, 18a emerge on one end face edge 50a, which is arranged on the first end face 42a of the main body 30a, on one of the folds 44a.
  • the fold 44a, on which the contact means 16a, 18a emerge forms in each case in the region of the contact means 16a, 18a of a layer structure comprising at least one layer 52a of the sheath foil 40a, each having a metal strip of the contact means 16a, 18a and a further layer 54a of the sheath foil 40a.
  • the contact means 16a, 18a are connected to a terminal of the energy storage unit
  • the energy storage unit 10a comprises at least two electrodes, one of which is electrically connected in each case to an interior of the housing 14a, each with a contact means 16a, 18a.
  • the strip pattern is arranged in an interior of the housing 14a in a region of the base side edge at which the contact means 16a, 18a emerge, parallel to the housing base side 20a.
  • the contact means 16a, 18a are provided for electrical contacting of the energy storage unit 10a and have different electrical
  • a first of the contact means 16a has a positive polarity in a charged state of the energy storage unit 10a.
  • Another of the contact means 18a has a negative polarity in the charged state. In an operating state, energy flows out of the energy storage unit 10a by means of the contact means 18a.
  • the fold 46a On which the contact means 18a emerge, is arranged parallel to the housing base side 20a (FIG. 2).
  • the contact means 18a are arranged in an extension of the housing base side 20a and each have a maximum of the main body 30a remote free end 56a, 58a with an orientation.
  • the further folds 46a, 48a are in the direction of the housing cover side 38a perpendicular to the
  • Housing base 20a bent away from the housing base side 20a.
  • the fold 44a on which the electrical contact means 18a emerge from the main body 30a, is bent away from the housing base side 20a with the contact means 16a, 18a in the direction of the housing cover 38a, perpendicular to the housing base 20a.
  • the contact means 16a, 18a extend along the first end face 42a at least substantially parallel to the end face 42a.
  • the contact means 16a, 18a are bent in a further course on the further front side edge 60a, which faces the front side edge 50a, on which the contact means 16a, 18a, away from the base body 30a perpendicular to the end face 42a of the end face 42a away.
  • the contact means 16a, 18a at the front side edge 50a, where they emerge from the main body 30a each have an arc, at which the strip profile forms an angle of about 90 degrees.
  • the contact means 16a, 18a have at the other front edge edge 60a each have a further arc, at which the strip profile forms an angle of about 90 degrees.
  • the bows each have a magnitude same angle.
  • the sheets have opposite directions along the course of the strip. The orientation of the free ends 56a, 58a is obtained compared to the initial state.
  • the electrical contact means 16a, 18a have, in an assembled state, a contacting plane which is arranged parallel to the housing base side 20a of the energy storage unit 10a.
  • the electrical contact means 16a, 18a are bent in the assembled state in the contacting plane.
  • the contact means 16a, 18a are bent twice in the mounted state.
  • the electrical contact means 16a, 18a are bent in the assembled state S-shaped and have two oppositely directed curvatures of the same amount. The bends each have an amount of about 90 degrees.
  • the contact means 16a, 18a extend in a region between the
  • Curvatures perpendicular to the housing base 20a It is conceivable that contact means 16a, 18a each have two curvatures of an equal amount, which is less than 90 degrees.
  • the housing 14a has, with respect to an extension perpendicular to the
  • Housing base 20a a housing center 22a, which is arranged at least in an assembled state spatially between the housing base side 20a and the contacting plane.
  • the contacting plane is arranged on an opposite side of the housing center 22a on the housing base side 20a.
  • the contact means 16a, 18a pass through in an assembled state
  • the energy storage unit 10a has a mounting unit which is provided to fix the at least one contact means 16a, 18a in the contacting plane.
  • the mounting unit comprises an angle element 62a, which has two vertical has plate-shaped legs 64a, 66a arranged at right angles to each other, which are connected to one another at a vertex edge 68a of the angle element 62a.
  • the angle element 62a is formed of a plastic.
  • a first of the legs 64a forms a bearing surface for the energy storage unit 10a.
  • Another of the legs 66a each has a passage 70a, 72a for the
  • the bushings 70a, 72a are slit-shaped. A main extension direction of the bushings 70a, 72a is arranged parallel to the apex edge 68a of the angle element 62a. In an assembled state, the contact means 16a, 18a are each passed through the further leg 66a of the angle element 62a. The other leg
  • 66a is intended to fix the contact means 16a, 18a in the contacting plane.
  • the energy storage units 10a, 12a are arranged in layers in the present embodiment. Each layer has two energy storage units 10a, 12a. It is conceivable that the layer has a larger number of energy storage units 10a, 12a or only consists of an energy storage unit 10a, 12a. In each case one of the longitudinal sides of the main body 30a of an energy storage unit 10a, 12a faces one of the longitudinal sides of the main body 30a of an adjacent energy storage unit 10a, 12a of the layer. The end faces 42a and the housing base sides 20a of the energy storage units 10a, 12a of the layer each lie in a common plane. The contact means 16a, 18a of the energy storage unit 10a, 12a of a pair have a common contacting plane.
  • FIG. 1 shows schematically the structure of the battery device 26a.
  • the battery device 26a has several layers of energy storage units 10a, 12a.
  • the housing cover sides 38a and the housing base sides 20a of the energy storage units of adjacent layers are each facing each other.
  • the Akkuvorraum 26 a comprises an intermediate layer member 74 a, which is arranged in an assembled state between the first leg 66 a of the angle member 62 a and the energy storage units 10 a, 12 a.
  • the rechargeable battery device 26a comprises a housing 76a, which is provided to store the energy storage units 10a, 12a and to couple the rechargeable battery device 26a to the handheld power tool not shown in more detail.
  • the battery device 26a is provided to be inserted into a corresponding receptacle of the power tool and it has an insertion direction.
  • the housing 76a is formed substantially of plastic and includes a bottom member 78a and a lid member 80a.
  • the housing 76a has a cuboid basic shape.
  • the lid member 80a is formed stepwise on an upper side.
  • the housing 76a at a step transition on two guide elements 82a, which are each formed as a groove in the insertion direction.
  • the housing 76a further comprises a locking element 84a for locking with the hand tool.
  • the locking element 84a is designed as a latching element, which protrudes in a locking position over a surface of the cover element 80a.
  • the battery device 26a has an operating element 86a for unlocking the locking element 84a.
  • the battery device 26a comprises a connection unit with a conductor carrier
  • connection unit is provided for electrically connecting the energy storage units 10a, 12a by means of series and / or parallel circuits.
  • the battery device 26a has solder joints, at which the conductor carrier 28a is electrically connected to the contact means 16a, 18a of the energy storage units 10a, 12a.
  • the battery device 26a has a contact unit 88a.
  • the contact unit 88a is provided for electrical connection with the hand tool.
  • the rechargeable battery device 26a comprises two connection conductors 90a, 92a, which in an assembled state electrically connect the connection unit to the connec- tor. connect clock unit 88a.
  • the connection conductors 90a, 92a have a different electrical polarity in a charged state of the energy storage units 10a, 12a. It is conceivable that the housing 76a is designed in a different manner, which makes sense to a person skilled in the art for a coupling with the electric machine, and accordingly has alternative guide elements and / or locking elements and / or contact units.
  • FIGS. 6 to 13 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
  • FIGS. 6 to 11 show an energy storage unit 10b of a handheld power tool.
  • the energy storage unit 10b is formed analogously to the preceding embodiment and provided to receive electrical energy in a charging process, to store the energy and deliver it when needed in an operating state of the power tool.
  • the energy storage unit 10b has a housing 14b.
  • the housing 14b is designed analogously to the preceding exemplary embodiment and comprises a main body 30b with a housing base side 20b and four base side edges.
  • the housing 14b extends in each case in a fold 44b, 46b, 48b, ie the housing 14b has three folds 44b, 46b, 48b.
  • the energy storage unit 10b comprises two electrical contact means 16b, 18b, which emerge on the housing base side 20b.
  • the contact means 16b, 18b are formed analogously to the preceding embodiment and exit at one of the folds 44b.
  • the fold 44b, on which the contact means 16b, 18b exit is arranged parallel to the housing base side 20b (FIG. 6).
  • the contact means 16b, 18b are in an extension of
  • Housing base side 20b arranged and each have a maximum of the main body 30b remote free end 56b, 58b with an orientation.
  • the further folds 46b, 48b are bent in the direction of a housing cover side 38b perpendicular to the housing base side 20b away from the housing base side 20b.
  • the fold 44b at which the electrical contact means 16b, 18b emerge from the base body 30b, is in an assembled state with the contact means
  • the contact means 16b, 18b extend along a first end face 42b parallel to the end face 42b (FIG. 7).
  • the contact means 16b, 18b are bent in a further course on a front side edge 60b, which is opposite to a front side edge 50b, on which the contact means 16b, 18b emerge, in the direction of the main body 30b, i. They each cover an area of the housing cover side 38b.
  • the contact means 16b, 18b have at the front side edge 50b, on which they emerge from the main body 30b, in each case an arc, at which the strip profile forms an angle of about 90 degrees.
  • the contact means 16b, 18b each have a further arc on the further front side edge 60b, which lies opposite the front side edge 50b, where the strip profile forms an angle of approximately 90 degrees.
  • the sheets each have an equal angle. In contrast to the preceding embodiment, the sheets have a same direction along the strip path. The orientation of the free ends 56b, 58b is rotated 180 degrees compared to the initial state.
  • the electrical contact means 16b, 18b In an assembled state, the electrical contact means 16b, 18b have a contacting plane which is arranged parallel to the housing base 20b of the energy storage unit 10b.
  • the electrical contact means 16b, 18b are bent in the assembled state in the contacting plane.
  • the contact means 16b, 18b are bent twice in the mounted state.
  • the electrical contact means 16b, 18b are bent in the assembled state U-shaped and have two mutually rectified curvatures of the same amount. The bends each have an amount of about 90 degrees.
  • the contact means 16b, 18b extend in a region between the curvatures at least substantially perpendicular to the housing base side 20b. It is conceivable that the contact means 16b, 18b each have two curvatures of different magnitude with a total of about 180 degrees.
  • the housing 14b has, relative to an extension perpendicular to the housing base side 20b, a housing center, which is arranged at least in an assembled state spatially between the housing base side 20b and the contacting plane.
  • the contacting level is on one of the
  • the contact means 16b, 18b pass through the housing center in an assembled state.
  • the energy storage unit 10b has a mounting unit which is provided to fix the at least one contact means 16b, 18b in the contacting plane.
  • the contact means 16b, 18b are connected in an assembled state with the free end 56b, 58b fixed to the mounting unit.
  • the mounting unit has two contact points 94b, 96b, which are each assigned to one of the contact means 16b, 18b and to which the contact means 16b, 18b are respectively fixedly connected to the mounting unit.
  • the contact means 16b, 18b are welded to the mounting unit at the contact points 94b, 96b.
  • the assembly unit has a planar design and at least in the region of the contact points
  • FIGS. 8 to 11 show the energy storage unit 10b and further analog energy storage units 12b of a group of energy storage units 12b for a cordless device for a handheld power tool.
  • Battery device has a plurality of energy storage units 10b, 12b.
  • the energy storage units 10b, 12b are arranged in layers analogous to the preceding embodiment.
  • Each layer has two energy storage units 10b, 12b. It is conceivable that the layer has a larger number of energy storage units 10b, 12b or only one Energy storage unit 10b exists.
  • the housing bases 20b of the energy storage units 10b, 12b of the layer are each arranged in a same plane. In each case one of the longitudinal sides of the main body 30b of an energy storage unit 10b faces one of the longitudinal sides of the main body 30b of an adjacent energy storage unit 10b of the layer.
  • the contact means 16b, 18b of the energy storage units 10b, 12b of a pair have a common contacting plane.
  • the front side edges 50b of the energy storage units 10b, 12b of the layer on which the contact means 16b, 18b exit are arranged on the same side of the layer.
  • the battery device has several layers of energy storage units 10b, 12b.
  • the housing cover sides 38b and the housing base sides 20b of the energy storage units 10b, 12b of adjacent layers are respectively facing each other.
  • the rechargeable battery device comprises a connection unit for an electrical contacting of the contact means 16b, 18b of the energy storage units 10b, 12b, which is formed at least partially in one piece with the mounting units of the energy storage units 10b, 12b.
  • the connection unit has a conductor carrier 28b, which is designed as a flexible printed circuit board.
  • the conductor carrier 28b is provided to electrically connect the energy storage units 10b, 12b to each other.
  • the conductor carrier 28b is strip-shaped and has a strip direction.
  • the conductor carrier 28b has two linear conductors 98b, 100b, which are arranged at least in the region of a layer parallel to each other and parallel to the strip direction.
  • the conductors 98b, 100b may also be arranged differently depending on the requirements of an interconnection of the energy storage units 10b, 12b.
  • the conductors 98b, 100b are formed, for example, as metal strips.
  • the conductors 98b, 100b are associated with different electrical poles and at the contact points 94b, 96b of the mounting units according to their polarity and the
  • the contact points 94b, 96b are arranged, with respect to one direction, perpendicular to the strip direction, spatially between the conductors 98b, 100b.
  • the conductor carrier 28b has electrical connecting webs 102b, 104b, which the contact points 94b, 96b each connect to one of the conductors 98b, 100b in response to the polarity of the contact means 16b, 18b connected to the pad 94b, 96b, and are arranged spatially between the pads 94b, 96b and the respective conductor 98b, 100b.
  • the contact points 94b, 96b are formed directly by the conductors 98b, 100b and the contact means 16b, 18b and the conductors 98b, 100b are widened, for example in the region of the contact points 94b, 96b.
  • the contact points 94b, 96b unlike the present embodiment, depending on the polarity of the respectively connected contact means 16b, 18b offset from one another.
  • the energy storage units 10b, 12b are connected at the contact points 94b, 96b to the conductor carrier 28b.
  • Housing cover side 38b of the energy storage units 10b, 12b ago seen, is the conductor support 28b on the contact means 16b, 18b ( Figure 8).
  • the conductor carrier 28b Seen on the housing base side 20b of the energy storage units 10b, 12b, the conductor carrier 28b is below the contact means 16b, 18b (FIG. 9). It is also conceivable that the conductor carrier 28b is arranged above the contact means 16b, 18b, viewed from the housing base side 20b, or that the contact means 16b, 18b are arranged on different sides of the conductor carrier 28b.
  • the energy storage units 10b, 12b are rotated in a further assembly step in each case by an axis extending in the region of the end face 42b axis by 180 degrees. In this case, the contact means 16b, 18b are bent and come into contact with the housing cover 38b.
  • the contact means 16b, 18b are located on the housing cover side 38b ( Figure 10).
  • the battery device has a stack of energy storage units 10b, 12b.
  • the energy storage units of different layers are arranged offset in a stacking direction perpendicular to the housing base sides 20b of the energy storage units 10b, 12b.
  • the conductor carrier 28b is adjacent in an assembled state between two energy storage units
  • the conductor carrier 28b forms straight sections 108b between energy storage units respectively adjacent in the stacking direction. Derived from the energy storage units, the stack has two longitudinal sides and two end faces 42b. The conductor carrier 28b forms on each of the two longitudinal sides a plurality of bent portions 106b, each one connect two straight sections 108b of the conductor support 28b. The bent portions 106 b are seen in the stacking direction of one of the end faces 42 b of the stack ago, arranged alternately in the stacking direction left and right on the longitudinal sides of the stack.
  • the conductor carrier 28b has a meandering arrangement in an assembled state.
  • connection unit has a plurality of conductor carriers which are each provided for contacting the contact means 16b, 18b of energy storage units 10b, 12b of a same layer and are each arranged between the layers.
  • the conductor carriers are at least electrically connected to each other in a further assembly step.
  • the rechargeable battery device comprises analogous to the preceding embodiment, a housing not shown in detail, which is intended to store the energy storage units and electrically and mechanically couple the rechargeable battery device with the power tool not shown.
  • FIGS. 12 and 13 show a further exemplary embodiment of an energy storage unit 10c of a handheld power tool.
  • the energy storage unit 10c is provided to receive electrical energy in a charging process, to store the energy and, if necessary, to deliver it in an operating state of the handheld power tool.
  • the energy storage unit 10c has a housing 14c.
  • the housing 14c is analogous to the preceding embodiment and comprises a base body 30c with a housing base side 20c and four base side edges. At three of the base side edges, the housing 14c each terminates in a fold 44c, 46c, 48c, i. the housing 14c has three folds
  • the energy storage unit 10c comprises two electrical contact means 16c, 18c, which emerge on the housing base side 20c.
  • the contact means 16c, 18c are formed analogously to the preceding embodiment, emerge at one of the folds 44c and have different polarities, i. one of the contact means 16c is formed as a positive contact means 16c, and another one of the contact means 18c is formed as a negative contact means 18c.
  • the fold 44c at which the contact means 16c, 18c emerge is similar to the preceding embodiments, parallel to the Housing base 20c arranged.
  • the contact means 16c, 18c are arranged in an extension of the housing base side 20c and each have a maximum of the main body 30c remote free end 56c, 58c with an orientation.
  • the further folds 46c, 48c are bent in the direction of a housing cover side 38c perpendicular to the housing base side 20c away from the housing base side 20c.
  • the contact means 16c, 18c are bent differently in an assembled state (FIG. 12).
  • the positive contact means 16c is at the fold 44c, where it exits, at an angle of about 45 degrees in a direction perpendicular to the
  • Housing base 20c bent in the direction of a housing center.
  • the positive contact means 16c is bent at an angle of about 45 degrees in a direction perpendicular to the case base side 20c toward the case base side 20c.
  • the negative contact means 18c is at the fold 44c, where it exits, at an angle of about 45 degrees in a direction perpendicular to the
  • the negative contact means 18 c is bent at an angle of about 45 degrees in a direction perpendicular to the housing base side 20 c in the direction of the housing base side 20 c. It is conceivable that the bending directions of the negative contact means 18c are interchanged with the bending directions of the positive contact means 16c.
  • the contact means 16c, 18c each have an arc at the fold 44c, where they emerge, at which the course of the strip forms an angle of approximately 45 degrees.
  • the contact means 16c, 18c each have a further arc at a free end 56c, 58c, at which the strip profile forms an angle of approximately 45 degrees.
  • the bows each have a magnitude same angle.
  • the sheets have opposite directions along the course of the strip. The orientation of the free ends 56c, 58c is obtained in comparison to the first assembly step.
  • the electrical contact means 16c, 18c In the assembled state, the electrical contact means 16c, 18c have a contacting plane which leads to the housing base side 20c of the energy supply. Chern unit 10c is arranged in parallel.
  • the electrical contact means 16c, 18c are bent in the assembled state in the contacting plane.
  • the contact means 16c, 18c are bent twice in the mounted state.
  • the electrical contact means 16c, 18c are bent in the assembled state S-shaped and have two oppositely directed curvatures of the same amount. The bends each have an amount of about 45 degrees.
  • the contact means 16c, 18c extend in an area between the bends at an angle of 45 degrees to the housing base side 20c. It is conceivable that the contact means 16c, 18c each have curvatures of an equal amount with a different value.
  • the energy storage unit 10c has a mounting unit which is provided to fix the at least one contact means 16c, 18c in the contacting plane.
  • the mounting unit is designed as a guide template 110c in the form of a plastic frame. It is conceivable that the mounting unit is formed of a different insulating material.
  • the mounting unit is provided to enclose the energy storage unit 10c in an assembled state at least from three sides.
  • the assembly unit has a base side wall 112c, a longitudinal side wall 114c and an end wall 116c.
  • the front side wall 116c has a larger wall thickness compared to the base side wall 112c and the longitudinal side wall 114c.
  • the bottom side wall 112c is in contact with the casing base side 20c of the energy storage unit 10c, and the longitudinal side wall 114c is in contact with one of the long sides of the energy storage unit 10c.
  • the guide template 110c has a frame base edge 118c at which the end side wall 116c and the bottom side wall 112c are adjacent to each other.
  • the guide template 110c has on the frame base edge 118c on a non-illustrated implementation for the negative contact means 18c.
  • the implementation is slot-shaped.
  • the negative contact means 18c is passed through the passage.
  • the end wall 116c has two prism-shaped sections 120c, 122c. One of the sections 120c is associated with the positive contact means 16c. Another of the sections 122c is associated with the negative contact means 18c.
  • the sections 120c, 122c have a common height which corresponds to the wall thickness of the end wall 116c.
  • the sections 120c, 122c each have an outer side facing away from the energy storage unit 10c, which is parallel-displaced in a direction perpendicular to the base side wall 112c relative to a respectively opposite side. The outsides of the
  • Portions 120c, 122c are parallel displaced in directions opposite to each other in a direction perpendicular to the base sidewall 112c with respect to a respective opposite side.
  • the sections 120c, 122c each have a sloping side which forms a guide surface for the contact means 16c, 18c respectively associated with the section 120c, 122c, which is provided for deforming the contact means 16c, 18c into the contacting plane.
  • the sections 120c, 122c are further provided to fix respectively the associated contact means 16c, 18c in the contacting plane of the contact means 16c, 18c.
  • FIG. 13 shows the energy storage unit 10c and further analog energy storage units 12c of a group of energy storage units 10c, 12c for a cordless device for a handheld power tool.
  • the battery device has a plurality of energy storage units 10c, 12c.
  • the energy storage units 10c, 12c are arranged in layers analogous to the preceding embodiments.
  • a layer has in each case two energy storage units 10c, 12c. It is conceivable that the layer has a larger number of energy storage units 10c, 12c or only consists of an energy storage unit 10c.
  • one of the longitudinal sides of the base body 30c of an energy storage unit 10c faces one of the longitudinal sides of the main body 30c of an adjacent energy storage unit 10c of the layer.
  • End faces 42c and the housing base sides 20c of the energy storage units 10c, 12c of the layer each lie in a common plane.
  • the contact means 16c, 18c of the energy storage unit 10c of a pair have a common contacting plane as a function of the polarity of the contact means 16c, 18c.
  • the bottom edges of the energy storage units 10c, 12c of the layer where the contact means 16c, 18c exit are disposed on a same side of the layer.
  • the mounting units of the energy storage units 10c, 12c of a layer are in the present embodiment integral with one another as a guide template 110c formed.
  • the layers each have guide templates 110c which are designed analogously to one another, one of which is provided with a reference numeral in FIG.
  • the battery device has several layers of energy storage units 10c,
  • the battery device has a stack arranged perpendicular to the stacking direction in which the layers are arranged successively.
  • the housing cover sides 38c and the housing base sides 20c of the energy storage units 10c, 12c of adjacent layers are each facing each other.
  • Portions 120c, 122c of the mounting units of mutually adjacent layers correspond to each other.
  • the sections 120c, 122c respectively engage the guide template of the adjacent layer. Adjacent layers are interlocked by the respective guide templates 110c in an assembled state.
  • the positive contact means 16c of the energy storage units 10c, 12c of a layer have a common contacting plane with the positive contact means of an adjacent layer in the stacking direction.
  • the negative contact means 18c of the energy storage units 10c, 12 of the layer have a common contacting plane with the negative contact means of an adjacent layer opposite to the stacking direction.
  • the battery device comprises a connection unit with a conductor carrier 28c.
  • the connection unit is provided for electrically connecting the energy storage units 10c, 12c.
  • the conductor carriers 28c are strip-shaped and have passages 124c, 126c for the contact means 16c, 18c in a strip direction. Two of the passages 124c, 126c are provided in FIG. 13 by reference numerals.
  • the conductor carriers 28c are each assigned to a layer. In a particularly simple manner, parallel connection of energy storage units 10c, 12c in adjacent stacks can be achieved. It is also conceivable that the conductor carriers 28c are provided for a series connection or for blocks of energy storage units 10c, 12c with another electrical arrangement which appears expedient to the person skilled in the art.
  • the guide template 110c has on the Grundtownwandung 112c analog to each other formed pin-shaped positioning elements 128c, one of which representatively in the figure 13 with a reference numeral verse-. hen is.
  • the positioning elements 128c are provided to an arrangement of the conductor carrier 28c. It is conceivable that the guide template 110c further positioning elements in different form, which are provided for a particularly efficient assembly of the conductor carrier 28c.
  • the battery device comprises analogous to the preceding embodiments, a non-illustrated dimensionally stable housing, which is intended to store the energy storage units and to couple the battery device with the power tool, not shown.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne une unité de stockage d'énergie destinée à une machine-outil portable, comprenant un boîtier (14a ; 14b ; 14c), qui possède une face de base plane (20a ; 20b ; 20c), et au moins un moyen de contact électrique (16a, 18a ; 16b ; 18b ; 16c ; 18c) qui sort au niveau de la face de base (20a ; 20b ; 20c) du boîtier. Selon l'invention, le moyen de contact (16a, 18a ; 16b, 18b ; 16c, 18c) comporte au moins dans un état assemblé un plan de contact qui est disposé en étant décalé parallèlement de la face de base (20a ; 20b ; 20c) du boîtier.
PCT/EP2014/071782 2013-10-15 2014-10-10 Unité de stockage d'énergie pour machine-outil portable WO2015055536A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013220766 2013-10-15
DE102013220766.2 2013-10-15
DE102014218879.2 2014-09-19
DE201410218879 DE102014218879A1 (de) 2013-10-15 2014-09-19 Energiespeichereinheit für eine Handwerkzeugmaschine

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Publication Number Publication Date
WO2015055536A1 true WO2015055536A1 (fr) 2015-04-23

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WO (1) WO2015055536A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220101622A (ko) * 2019-11-19 2022-07-19 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 소프트팩 배터리 모듈, 배터리 팩 및 소프트팩 배터리 모듈을 사용한 장치
WO2022209186A1 (fr) * 2021-04-01 2022-10-06 株式会社マキタ Batterie pour outil électrique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021034918A1 (fr) * 2019-08-21 2021-02-25 Black & Decker, Inc. Bloc-batterie
DE102020209181A1 (de) 2020-07-22 2022-01-27 Robert Bosch Gesellschaft mit beschränkter Haftung Batteriemodul und Verfahren zur Herstellung desselben

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002117828A (ja) * 2000-10-04 2002-04-19 Sanyo Electric Co Ltd 電池ブロック、組電池及び組電池の固定構造
US6482544B1 (en) * 2000-06-30 2002-11-19 Mitsubishi Denki Kabushiki Kaisha Battery package
US20030017388A1 (en) * 2001-07-23 2003-01-23 Ntk Powerdex, Inc. Packaging for polymer electrolytic cell and method of forming same
JP2005222699A (ja) * 2004-02-03 2005-08-18 Shin Kobe Electric Mach Co Ltd 組電池
JP2006344457A (ja) * 2005-06-08 2006-12-21 Pionics Co Ltd 薄型二次電池とその集合電池及びそれらの製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6482544B1 (en) * 2000-06-30 2002-11-19 Mitsubishi Denki Kabushiki Kaisha Battery package
JP2002117828A (ja) * 2000-10-04 2002-04-19 Sanyo Electric Co Ltd 電池ブロック、組電池及び組電池の固定構造
US20030017388A1 (en) * 2001-07-23 2003-01-23 Ntk Powerdex, Inc. Packaging for polymer electrolytic cell and method of forming same
JP2005222699A (ja) * 2004-02-03 2005-08-18 Shin Kobe Electric Mach Co Ltd 組電池
JP2006344457A (ja) * 2005-06-08 2006-12-21 Pionics Co Ltd 薄型二次電池とその集合電池及びそれらの製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220101622A (ko) * 2019-11-19 2022-07-19 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 소프트팩 배터리 모듈, 배터리 팩 및 소프트팩 배터리 모듈을 사용한 장치
KR102619453B1 (ko) 2019-11-19 2023-12-28 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 소프트팩 배터리 모듈, 배터리 팩 및 소프트팩 배터리 모듈을 사용한 장치
WO2022209186A1 (fr) * 2021-04-01 2022-10-06 株式会社マキタ Batterie pour outil électrique

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DE102014218879A1 (de) 2015-04-16

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