AU2020100321A4 - Battery pack for a power tool, battery charger for such battery pack, and power tool for such battery pack - Google Patents

Battery pack for a power tool, battery charger for such battery pack, and power tool for such battery pack Download PDF

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Publication number
AU2020100321A4
AU2020100321A4 AU2020100321A AU2020100321A AU2020100321A4 AU 2020100321 A4 AU2020100321 A4 AU 2020100321A4 AU 2020100321 A AU2020100321 A AU 2020100321A AU 2020100321 A AU2020100321 A AU 2020100321A AU 2020100321 A4 AU2020100321 A4 AU 2020100321A4
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Australia
Prior art keywords
battery pack
power tool
contact
battery
battery charger
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AU2020100321A
Inventor
Clint CAGLE
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Techtronic Cordless GP
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Techtronic Cordless GP
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Publication date
Priority claimed from US29/704,580 external-priority patent/USD929339S1/en
Priority claimed from US29/704,570 external-priority patent/USD929334S1/en
Priority claimed from US29/704,572 external-priority patent/USD929336S1/en
Application filed by Techtronic Cordless GP filed Critical Techtronic Cordless GP
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Publication of AU2020100321A4 publication Critical patent/AU2020100321A4/en
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Classifications

    • 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
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • 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
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Disclosed herein is a battery pack, in particular for a power tool, with a housing having a mating side adapted to be mated with a mating side of a battery charger or power tool by inserting the battery pack into the battery charger or power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery pack, wherein the electrical contacts are configured as female contact terminals, wherein the electrical contacts are spaced from one another in a lateral direction of the battery pack, the lateral direction being perpendicular to the insertion direction, and wherein the electrical contacts are aligned parallel to one another, wherein a center-to-center distance between any two of said electrical contacts is an integer multiple of 7 mm. Also disclosed herein are batter chargers for such battery packs, and power tools for such battery packs. Fig. 1 Fig. 2

Description

Battery pack for a power tool, battery charger for such battery pack, and power tool for such battery pack [0001] The present invention relates to a battery pack, a battery charger for such a battery pack and to a power tool for such a battery pack. More specifically, the present invention relates to a battery pack according to the preamble of independent claim 1, to a battery charger according to the preamble of independent claim 19 and to a power tool according to the preamble of independent claim 36.
[0002] A battery pack according to the preamble of independent claim 1 comprises a housing having a mating side adapted to be mated with a mating side of a battery charger or power tool by inserting the battery pack into the battery charger or power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery pack, wherein the electrical contacts are configured as female contact terminals, wherein the electrical contacts are spaced from one another in a lateral direction of the battery pack, the lateral direction being perpendicular to the insertion direction, and wherein the electrical contacts are aligned parallel to one another.
[0003] Battery packs of the kind described above are widely used and are available from different manufacturers. Such battery packs must fulfill a number of requirements, in particular when used with an electric power tool. Not only safe handling of the battery packs has to be ensured. Since not all battery packs can be used with each and every power tool available on the market, for example due to different operating voltages and/or different electric power ratings and/or different pin assignment, improper installation of battery packs must be prevented in any case. Moreover, a certain minimum distance between electrical contact pins of a battery pack must be ensured in order to guarantee safe operation of power tool and battery pack.
[0004] It is an object of the present invention to provide a new battery pack that guarantees safe handling and operation and that does not allow improper installation, for example an installation to a power tool that would require a different battery pack with a different operating voltage and/or electric power rating.
[0005] The object is solved by the features of independent claim 1. Accordingly, in the case of a battery pack according to the preamble of the independent claim 1, a solution of the object according to the invention exists if a center-to-center distance between any two of said electrical contacts is an integer multiple of 7 mm.
[0006] Advantageous embodiments of the present invention are the subject of the dependent claims.
2020100321 04 Mar 2020 [0007] According to a preferred embodiment of the present invention, a center-to-center distance between any two neighboring electrical contacts of said set of electrical contacts is 7 mm.
[0008] According to another preferred embodiment of the present invention, said set of electrical contacts comprises five electrical contacts. It is particularly preferred if said set of electrical contacts comprises exactly five electrical contacts.
[0009] According to another preferred embodiment of the present invention, said set of electrical contacts comprises an outer first contact which serves as a negative contact for charging or discharging the battery pack, a neighboring second contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger or power tool, a neighboring third contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger or power tool, a neighboring fourth contact which serves as a positive contact for charging or discharging the battery pack at a small current, and a neighboring outer fifth contact which serves as a positive contact for charging or discharging the battery pack at a large current. Preferably, the fourth contact serves as a positive contact for charging or discharging the battery pack at a small current of less than 10 A. Preferably, the fifth contact serves as a positive contact for charging or discharging the battery pack at a large current larger than 10 A, further preferred between 10 A and 40 A.
[0010] According to another preferred embodiment of the present invention, the first and fifth contacts have larger dimensions than the second, third and fourth contacts in order to carry a larger maximum current.
[0011] According to another preferred embodiment of the present invention, said first contact is positioned in front of said second to fifth contacts as seen in said insertion direction such that said first contact of the battery pack comes into contact with a corresponding contact of said battery charger or power tool before the other contacts of the battery pack do if the battery pack is inserted into said battery charger or power tool. This guarantees a safe operation.
[0012] According to another preferred embodiment of the present invention, said electrical contacts are arranged within the housing of the battery pack behind slots in the housing of the battery pack. This embodiment further improves safety. Preferably, the center-to-center distance between two slots is also 7 mm. It is particularly advantageous if said slots have a width in the range of 2,5 mm to 3,0 mm, wherein the width of the slots is preferably 2,72 mm.
[0013] According to another preferred embodiment of the present invention, said female contact terminals are adapted to receive male blade contacts of the battery charger or power tool.
2020100321 04 Mar 2020 [0014] In another advantageous aspect of the present invention, a battery pack is provided which has a housing having a mating side adapted to be mated with a mating side of a battery charger or power tool by inserting the battery pack into the battery charger or power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery pack, wherein the battery pack comprises a mating protrusion at said mating side, wherein said mating protrusion has a first width measured in a lateral direction perpendicular to said insertion direction, wherein said mating protrusion comprises a pair of grooves at opposing lateral sides thereof, said grooves extending along the insertion direction and being adapted to receive corresponding formfit elements of said battery charger or power tool in order to provide a form-locking engagement between said battery pack and said battery charger or power tool in a direction perpendicular to said insertion direction if the battery pack is inserted into said battery charger or power tool, and wherein a distance between bottoms of said grooves measured in the lateral direction defines a second width of the mating protrusion. According to the present invention, the first width is in the range of 63 mm to 65 mm, wherein the second width is in the range of 53 mm to 55 mm.
[0015] According to a preferred embodiment of the present invention, the first width is 63 mm, wherein the second width is 53 mm.
[0016] According to another preferred embodiment of the present invention, a groove width of said grooves is in the range of 6 mm to 7 mm. Preferably, said groove width is 6,5 mm.
[0017] According to another preferred embodiment of the present invention, a distance between each of said grooves and a top side of said mating protrusion is 6,6 mm.
[0018] According to another preferred embodiment of the present invention, said set of electrical contacts is arranged at a front end of said mating protrusion and centrally with respect to the lateral sides of said mating protrusion.
[0019] In another advantageous aspect of the present invention, a battery pack is provided which comprises a housing having a mating side adapted to be mated with a mating side of a battery charger or power tool by inserting the battery pack into the battery charger or power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery pack, wherein the battery pack comprises a mating protrusion at said mating side, wherein said mating protrusion has a first axial stop at a front end thereof, the first axial stop being adapted to cooperate with a second axial stop of said battery charger or power tool in order to determine an inserted position of said battery pack and to inhibit further movement of the battery pack in the insertion direction when the battery pack is fully inserted into said battery charger or power tool, wherein said battery pack further comprises a latch an engagement surface of which is adapted to engage with a third axial stop of said battery charger or power tool when the battery pack is in the inserted position in order to inhibit movement of the battery pack opposite to said insertion
2020100321 04 Mar 2020 direction. According to the present invention, a distance between said first axial stop and said engagement surface measured in the insertion direction is in the range of 84 mm to 86 mm.
[0020] According to a preferred embodiment of the present invention, said distance between said first axial stop and said engagement surface measured in the insertion direction is 85,6 mm.
[0021] According to another preferred embodiment of the present invention, a width of said latch measured in a lateral direction perpendicular to said insertion direction is 33 mm.
[0022] The invention also provides a battery charger for a battery pack in accordance with the invention. The battery charger comprises a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the battery charger along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery charger, wherein the electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced from one another in a lateral direction of the battery charger, the lateral direction being perpendicular to the insertion direction, and wherein the blade contacts are aligned parallel to one another. According to the invention, a center-to-center distance between any two of said blade contacts is an integer multiple of 7 mm.
[0023] According to a preferred embodiment of the present invention, a center-to-center distance between any two neighboring blade contacts of said set of electrical contacts is 7 mm.
[0024] According to another preferred embodiment of the present invention, said set of electrical contacts comprises four blade contacts equally spaced from one another by a center-to-center distance of 7 mm.
[0025] According to another preferred embodiment of the present invention, said set of electrical contacts comprises an outer first contact which serves as a negative contact for charging the battery pack, a neighboring second contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger, a neighboring third contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger, and a neighboring fourth contact which serves as a positive contact for charging the battery pack. It is particularly advantageous if said set of electrical contacts further comprises a detection contact which is arranged at the same position as the outer first contact in that said first contact and said detection contact share a common extension plane such that said outer first contact and said detection contact are adapted to be short-circuited by a corresponding single contact of the battery pack.
[0026] According to a preferred embodiment, the detection contact is shorter than the first to fourth contacts such that said outer first contact and said detection contact are short-circuited after an electrical connection between the first to fourth contacts of the battery charger and
2020100321 04 Mar 2020 corresponding electrical contacts of the battery pack has been established when the battery pack is inserted into the battery charger. It is particularly advantageous if the battery charger comprises a detection circuit which is adapted to determine whether a battery pack is inserted in the battery charger by detecting whether said first contact and said detection contact are short-circuited.
[0027] According to another preferred embodiment of the present invention, said male blade contacts of the battery charger are adapted to be received in female contact terminals of the battery pack.
[0028] In another advantageous aspect of the present invention, a battery charger is provided which comprises a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the battery charger along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery charger, wherein a lateral direction of the battery charger is defined to be perpendicular to the insertion direction, wherein the battery charger comprises a mating recess at said mating side, wherein said mating recess has a third width measured in the lateral direction, wherein said mating recess comprises a pair of ribs at opposing lateral sides of the mating recess, wherein said ribs protrude towards each other in the lateral direction and extend along the insertion direction, and wherein said ribs are adapted to be received in corresponding grooves of said battery pack in order to provide a form-locking engagement between said battery pack and said battery charger in a direction perpendicular to said insertion direction if the battery pack is inserted into said battery charger, and wherein a distance between said ribs measured in the lateral direction defines a fourth width of the mating recess. According to the invention, the third width is in the range of 63 mm to 66 mm, wherein the fourth width is in the range of 53 mm to 56 mm.
[0029] Preferably, the third width is 65,2 mm, wherein the fourth width is 55 mm.
[0030] According to another preferred embodiment of the present invention, a distance between the ribs and a bottom of said mating recess is in the range of 6,6 mm to 7,0 mm. It is particularly advantageous if said distance between the ribs and said bottom of said mating recess is 6,75 mm.
[0031] According to another preferred embodiment of the present invention, a rib width of said ribs is in the range of 4 mm to 6,5 mm.
[0032] In another advantageous aspect of the present invention, a battery charger is provided which comprises a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the battery charger along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery charger, wherein a lateral direction of the battery charger is defined to be perpendicular to the insertion direction,
2020100321 04 Mar 2020 wherein the battery charger comprises a second axial stop being adapted to cooperate with a first axial stop of said battery pack, in order to determine an inserted position of said battery pack and to inhibit further movement of the battery pack in the insertion direction when the battery pack is fully inserted into said battery charger, wherein said battery charger further comprises a third axial stop which is adapted to be engaged by a latch of said battery pack when the battery pack is in the inserted position in order to inhibit movement of the battery pack opposite to said insertion direction. According to the invention, a distance between said second axial stop and said third axial stop measured in the insertion direction is in the range of 85,6 mm to 88 mm.
[0033] Preferably, said distance between said second axial stop and said third axial stop measured in the insertion direction is 86,29 mm.
[0034] According to another preferred embodiment of the present invention, said third axial stop is formed by a wall of a locking recess in the battery charger.
[0035] According to another preferred embodiment of the present invention, a width of said locking recess measured in the lateral direction is at least 33 mm.
[0036] The invention also provides a power tool for a battery pack in accordance with the invention. The power tool comprises a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the power tool, wherein the electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced from one another in a lateral direction of the power tool, the lateral direction being perpendicular to the insertion direction, and wherein the blade contacts are aligned parallel to one another. According to the invention, a center-to-center distance between any two of said blade contacts is an integer multiple of 7 mm.
[0037] According to a preferred embodiment of the present invention, a center-to-center distance between at least two neighboring blade contacts of said set of electrical contacts is 7 mm.
[0038] According to another preferred embodiment of the present invention, said set of electrical contacts comprises four blade contacts, wherein three of said four blade contacts are equally spaced from one another by a center-to-center distance of 7 mm, and wherein the fourth blade contact of said four blade contacts is spaced from its neighboring blade contact by a center-tocenter distance of 14 mm.
[0039] According to another preferred embodiment of the present invention, said set of electrical contacts comprises an outer first contact which serves as a negative contact for discharging the battery pack and powering the power tool, a neighboring second contact which serves as a communication contact for transmitting a communication signal between said battery pack and
2020100321 04 Mar 2020 said power tool, a neighboring third contact which serves as a communication contact for transmitting a communication signal between said battery pack and said power tool, and a neighboring fourth contact which serves as a positive contact for discharging the battery pack and powering the power tool.
[0040] According to another preferred embodiment of the present invention, said male blade contacts of the power tool are adapted to be received in female contact terminals of the battery pack.
[0041] In another advantageous aspect of the present invention, a power tool is provided which comprises a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the power tool, wherein a lateral direction of the power tool is defined to be perpendicular to the insertion direction, wherein the power tool comprises a mating recess at said mating side, wherein said mating recess has a third width measured in the lateral direction, wherein said mating recess comprises a pair of ribs at opposing lateral sides of the mating recess, wherein said ribs protrude towards each other in the lateral direction and extend along the insertion direction, and wherein said ribs are adapted to be received in corresponding grooves of said battery pack in order to provide a form-locking engagement between said battery pack and said power tool in a direction perpendicular to said insertion direction if the battery pack is inserted into said power tool, and wherein a distance between said ribs measured in the lateral direction defines a fourth width of the mating recess. According to the invention, the third width is in the range of 63 mm to 66 mm, wherein the fourth width is in the range of 53 mm to 56 mm.
[0042] Preferably, the third width is 65,2 mm, wherein the fourth width is 55 mm.
[0043] According to another preferred embodiment of the present invention, a distance between the ribs and a bottom of said mating recess is in the range of 6,6 mm to 7,0 mm. It is particularly advantageous if said distance between the ribs and said bottom of said mating recess is 6,75 mm.
[0044] According to another preferred embodiment of the present invention, a rib width of said ribs is in the range of 4 mm to 6,5 mm.
[0045] In another advantageous aspect of the present invention, a power tool is provided which comprises a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the power tool, wherein a lateral direction of the power tool is defined to be perpendicular to the insertion direction, wherein the power tool
2020100321 04 Mar 2020 comprises a second axial stop being adapted to cooperate with a first axial stop of said battery pack, in order to determine an inserted position of said battery pack and to inhibit further movement of the battery pack in the insertion direction when the battery pack is fully inserted into said power tool, wherein said power tool further comprises a third axial stop which is adapted to be engaged by a latch of said battery pack when the battery pack is in the inserted position in order to inhibit movement of the battery pack opposite to said insertion direction. According to the invention, a distance between said second axial stop and said third axial stop measured in the insertion direction is in the range of 85,6 mm to 88 mm.
[0046] Preferably, said distance between said second axial stop and said third axial stop measured in the insertion direction is 86,29 mm.
[0047] According to a preferred embodiment of the present invention, said third axial stop is formed by a wall of a locking recess in the power tool. It is particularly advantageous if a width of said locking recess measured in the lateral direction is at least 33 mm.
[0048] Embodiments of the present invention shall be explained in more detail hereinafter with reference to the drawings.
[0049] Figure 1 shows a perspective view of a battery pack 1 according to the invention,
[0050] Figure 2 shows another perspective view of the battery pack 1 shown in Figure 1,
[0051] Figure3 shows a side view of the battery pack shown in Figures 1 and 2,
[0052] Figure 4 shows a front view of the battery pack shown in Figures 1 to 3,
[0053] Figure 5 shows a top view of the battery pack shown in Figures 1 to 4,
[0054] Figure 6 shows the top view from Figure 5 with a partly opened housing,
[0055] Figure 7 shows a perspective view of a battery charger 2 according to the invention,
[0056] Figure 8 shows a front view of the battery charger 2 shown in Figure 7,
[0057] Figure 9 shows a top view of the battery charger 2 shown in Figures 7 and 8,
[0058] Figure 10 shows a perspective view of a power tool 3 according to the invention,
[0059] Figure 11 shows a detail view of the mating recess 18 of the power tool 3 shown in
figure 10 in a perspective view, [0060] Figure 12 shows a front detail view of the mating recess shown in Figure 11, and
2020100321 04 Mar 2020 [0061] Figure 13 shows a top detail view of the mating recess shown in Figures 11 and 12.
[0062] Figures 1 to 6 show a battery pack (1) for a power tool (3) as for example shown in Figures 10 to 13. The battery pack (1) comprises a housing (4) having an upper mating side adapted to be mated with a mating side of a battery charger (2) as shown in Figures 7 to 9 or with a mating side of the power tool (3) shown in Figures 10 to 13. The mating is accomplished by inserting a mating protrusion (6) of the battery pack (1) into a mating recess (18) of the battery charger (2) or power tool (3) along an insertion direction (I) indicated in Figures 1,2, 3, 5, 7 and 9.
[0063] As shown in Figure 6, a set of five electrical contacts (P1-P5) is arranged at the mating side of the battery pack within the housing (4) of the battery pack (1) and behind slots (5) in the housing (4) of the battery pack (1). The electrical contacts (P1-P5) are configured as female contact terminals and are adapted to receive male blade contacts (C1-C5; T1-T4) of the battery charger (2) (see in particular Figure 7) or power tool (3) (see in particular Figure 11). As shown in Figure 6, the electrical contacts (P1-P5) are aligned parallel to one another. The electrical contacts are spaced from one another in a lateral direction of the battery pack which is perpendicular to the insertion direction (I). A center-to-center distance between any two of said electrical contacts (P1-P5) is an integer multiple of 7 mm. More specifically, a center-to-center distance (D) between any two neighboring electrical contacts is 7 mm. The set of electrical contacts (P1-P5) is arranged at a front end (10) of said mating protrusion (6) and centrally with respect to the lateral sides (16) of said mating protrusion (6).
[0064] The set of electrical contacts (P1-P5) comprises an outer first contact (P1) which serves as a negative contact for charging or discharging the battery pack (1), a neighboring second contact (P2) which serves as a communication contact for transmitting a communication signal between said battery pack (1) and said battery charger (2) or power tool (3), a neighboring third contact (P3) which serves as a communication contact for transmitting a communication signal between said battery pack (1) and said battery charger (2) or power tool (3), a neighboring fourth contact (P4) which serves as a positive contact for charging or discharging the battery pack (1) at a small current of less than a first value, and a neighboring outer fifth contact (P5) which serves as a positive contact for charging or discharging the battery pack (1) at a large current between the first value and a second value. The communication contacts (P2) and (P3) are used to exchange information for example about the battery model, the charging status or the battery temperature. As can be seen in Figure 6, the first and fifth contacts (P1, P5) have larger dimensions than the second, third and fourth contacts (P2, P3, P4) in order to carry a larger maximum current. In certain embodiments, the first value is between 5A and 20A, between 7A and 15A, between 9A and 12A. In certain embodiments, the first value is 10A. In certain embodiments, the second value is between 5A and 60A, between 10A and 50A, between 20A and 40A. In certain embodiments, the second value is 40A.
2020100321 04 Mar 2020 [0065] Furthermore, said first contact (P1) is positioned in front of said second to fifth contacts (P2-P5) as seen in said insertion direction (I) such that said first contact (P1) of the battery pack (1) comes into contact with a corresponding contact (C1; T1) of said battery charger (2) or power tool (3) before the other contacts (P2-P5) of the battery pack (1) do if the battery pack (1) is inserted into said battery charger (2) or power tool (3).
[0066] As shown in Figure 4, the mating protrusion (6) has a first width (W1) measured in the lateral direction. It comprises a pair of grooves (7) at opposing lateral sides (16) thereof, said grooves (7) extending along the insertion direction (I) and being adapted to receive corresponding ribs (8) of the battery charger (2) or power tool (3) in order to provide a form-locking engagement between said battery pack (1) and said battery charger (2) or power tool (3) in a direction perpendicular to said insertion direction (I) if the battery pack (1) is inserted into said battery charger (2) or power tool (3). A distance between bottoms of said grooves (7) measured in the lateral direction defines a second width (W2) of the mating protrusion (6). With the embodiment shown, the first width (W1) is 63 mm, wherein the second width (W2) is 53 mm. A groove width (Wg) of said grooves (7) as indicated in Fig. 3 is 6,5 mm. A distance (Dg) between each of said grooves (7) and a top side (9) of said mating protrusion (6) is 6,6 mm.
[0067] As shown in Figures 1 and 5, the mating protrusion (6) has a first axial stop (11) at the front end (10). The first axial stop (11) is adapted to cooperate with a second axial stop (12) of said battery charger (2) or power tool (3) (see in particular Figures 7 and 9) in order to determine an inserted position of said battery pack (1) and to inhibit further movement of the battery pack (1) in the insertion direction (I) when the battery pack (1) is fully inserted into said battery charger (2) or power tool (3). The battery pack (1) further comprises a latch (14) that has an engagement surface (15) which is adapted to engage with a third axial stop (13) of said battery charger (2) or power tool (3) when the battery pack (1) is in the inserted position in order to inhibit movement of the battery pack (1) opposite to said insertion direction (I). As shown in Figure 9, said third axial stop (13) is formed by a wall of a locking recess (21) in the battery charger (2). A width (Wl) of said latch (14) measured in the lateral direction is 33 mm (Figure 5). A width (Wlr) of said locking recess (21) measured in the lateral direction is at least 33 mm to ensure that the latch (14) can snap into the locking recess (21) (Figure 9). With the embodiment shown, the distance (D1) between said first axial stop (11) and said engagement surface (15) measured in the insertion direction (I) is 85,6 mm (Figure 5). The distance (D2) between said second axial stop (12) and said third axial stop (13) measured in the insertion direction (I) is 86,29 mm (Figure 9).
[0068] Further details on the battery charger (2) shall be explained below with reference to Figures 7 to 9.
[0069] The battery charger (2) comprises a housing (17) having a mating side adapted to be mated with the mating side of the battery pack (1). A set of electrical contacts (C1-C4) is arranged
2020100321 04 Mar 2020 at the mating side of the battery charger (2). As already mentioned above, the electrical contacts of the battery charger are configured as male blade contacts. Like the female terminals of the battery pack, the blade contacts (C1-C4) are aligned parallel to one another and spaced from one another in the lateral direction of the battery charger (2). A center-to-center distance between any two of said blade contacts is an integer multiple of 7 mm such that the blade contacts (C1-C4) can be brought into contact with the female contact terminals (P1-P4) of the battery pack.
[0070] The set of electrical contacts (C1-C4) comprises four blade contacts (C1-C4), namely an outer first contact (C1) which serves as a negative contact for charging the battery pack (1), a neighboring second contact (C2) which serves as a communication contact for transmitting a communication signal between said battery pack (1) and said battery charger (2), a neighboring third contact (C3) which serves as a communication contact for transmitting a communication signal between said battery pack (1) and said battery charger (2), and a neighboring fourth contact (C4) which serves as a positive contact for charging the battery pack (1). The set of electrical contacts further comprises a detection contact (C5) which is arranged at the same position as the outer first contact (C1) in that said first contact (C1) and said detection contact (C5) share a common extension plane such that said outer first contact (C1) and said detection contact (C5) are adapted to be short-circuited by a corresponding single contact (P1) of the battery pack (1).
[0071] The detection contact (C5) is shorter than the first to fourth contacts (C1-C4) such that said outer first contact (C1) and said detection contact (C5) are short-circuited after an electrical connection between the first to fourth contacts (C1-C4) of the battery charger and corresponding electrical contacts (P1-P4) of the battery pack (1) has been established when the battery pack (1) is inserted into the battery charger (2). The battery charger (2) comprises a detection circuit (not shown) which is adapted to determine whether a battery pack (1) is inserted in the battery charger (2) by detecting whether said first contact (C1) and said detection contact (C5) are short-circuited.
[0072] The mating recess (18) of the battery charger (2) has a third width (W3) measured in the lateral direction. It comprises the pair of ribs (8) already mentioned earlier at opposing lateral sides (19) of the mating recess (18). The ribs (8) protrude towards each other in the lateral direction and extend along the insertion direction (I). The ribs (8) are adapted to be received in the grooves (7) of said battery pack (1) in order to provide a form-locking engagement between said battery pack (1) and said battery charger (2) in a direction perpendicular to said insertion direction (I). A distance between said ribs (8) measured in the lateral direction defines a fourth width (W4) of the mating recess (18). With the embodiment shown, the third width (W3) is 65,2 mm, wherein the fourth width (W4) is 55 mm. A distance (Dr) between the ribs (8) and a bottom (20) of said mating recess (18) is 6,75 mm (Figure 8). A maximum width (Wr) of said ribs (8) may be in the range of 4 mm to 6,5 mm.
[0073] A power tool (3) that may be powered by the battery pack (1) shown in Figures 1 to 6 is shown in Figures 10 to 13. It comprises a housing (22) that is equipped with a mating recess (18) the general layout of which corresponds to the mating recess (18) of the battery charger (2) shown in Figures 7 to 9 with the following difference: The fourth blade contact (T4) of the power tool (3) is adapted to be received within the fifth female terminal (P5) instead of within the fourth female terminal (P4) of the battery pack (1).
2020100321 04 Mar 2020
List of reference signs battery pack battery charger power tool housing of the battery pack slot in the housing of the battery pack mating protrusion of the battery pack groove in the mating protrusion rib of the mating recess top side of the mating protrusion front end of the mating protrusion first axial stop second axial stop third axial stop latch engagement surface of the latch lateral side of the mating protrusion housing of the battery charger mating recess lateral side of the mating recess bottom of the mating recess locking recess housing of the power tool
I insertion direction
P1 first electrical contact of the battery pack
P2 second electrical contact of the battery pack
P3 third electrical contact of the battery pack
P4 fourth electrical contact of the battery pack
P5 fifth electrical contact of the battery pack
C1 first electrical contact of the battery charger
C2 second electrical contact of the battery charger
C3 third electrical contact of the battery charger
C4 fourth electrical contact of the battery charger
C5 fifth electrical contact of the battery charger
T1 first electrical contact of the power tool
T2 second electrical contact of the power tool
T3 third electrical contact of the power tool
T4 fourth electrical contact of the power tool
2020100321 04 Mar 2020
W1 first width of the mating protrusion
W2 second width of the mating protrusion
W3 third width of the mating recess
W4 fourth width of the mating recess
Wg width of the groove in the mating protrusion
Wr width of the rib of the mating recess
Wl width of the latch
Wlr width of the locking recess
D center-to-center distance between neighboring electrical contacts
D1 distance between first axial stop and engagement surface
D2 distance between second axial stop and third axial stop
Dg distance between the grooves and the top side of the mating protrusion
Dr distance between the ribs and the bottom of the mating recess

Claims (49)

1. Battery pack, in particular for a power tool, with a housing having a mating side adapted to be mated with a mating side of a battery charger or power tool by inserting the battery pack into the battery charger or power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery pack, wherein the electrical contacts are configured as female contact terminals, wherein the electrical contacts are spaced from one another in a lateral direction of the battery pack, the lateral direction being perpendicular to the insertion direction, and wherein the electrical contacts are aligned parallel to one another, wherein a center-to-center distance between any two of said electrical contacts is an integer multiple of 7 mm.
2. Battery pack according to claim 1, characterized in that a center-to-center distance between any two neighboring electrical contacts of said set of electrical contacts is 7 mm.
3. Battery pack according to claim 1 or 2, characterized in that said set of electrical contacts comprises five electrical contacts.
4. Battery pack according to claim 3, characterized in that said set of electrical contacts comprises
- an outer first contact which serves as a negative contact for charging or discharging the battery pack,
- a neighboring second contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger or power tool,
- a neighboring third contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger or power tool,
- a neighboring fourth contact which serves as a positive contact for charging or discharging the battery pack at a small current, and
- a neighboring outer fifth contact which serves as a positive contact for charging or discharging the battery pack at a large current.
5. Battery pack according to claim 4, characterized in that the first and fifth contacts have larger dimensions than the second, third and fourth contacts in order to carry a larger maximum current.
6. Battery pack according to claim 4 of 5, characterized in that said first contact is positioned in front of said second to fifth contacts as seen in said insertion direction such that said first contact
2020100321 04 Mar 2020 of the battery pack comes into contact with a corresponding contact of said battery charger or power tool before the other contacts of the battery pack do if the battery pack is inserted into said battery charger or power tool.
7. Battery pack according to one of claims 1 to 6, characterized in that said electrical contacts are arranged within the housing of the battery pack behind slots in the housing of the battery pack.
8. Battery pack according to claim 7, characterized in that said slots have a width in the range of 2.5 mm to 3.0 mm, wherein the width of the slots is preferably 2.72 mm.
9. Battery pack according to one of claims 1 to 8, characterized in that said female contact terminals are adapted to receive male blade contacts of the battery charger or power tool.
10. Battery pack, in particular according to one of claims 1 to 9, with a housing having a mating side adapted to be mated with a mating side of a battery charger or power tool by inserting the battery pack into the battery charger or power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery pack, wherein the battery pack comprises a mating protrusion at said mating side, wherein said mating protrusion has a first width measured in a lateral direction perpendicular to said insertion direction, wherein said mating protrusion comprises a pair of grooves at opposing lateral sides thereof, said grooves extending along the insertion direction and being adapted to receive corresponding form-fit elements of said battery charger or power tool in order to provide a form-locking engagement between said battery pack and said battery charger or power tool in a direction perpendicular to said insertion direction if the battery pack is inserted into said battery charger or power tool, and wherein a distance between bottoms of said grooves measured in the lateral direction defines a second width of the mating protrusion, characterized in that the first width is in the range of 63 mm to 65 mm, wherein the second width is in the range of 53 mm to 55 mm.
11. Battery pack according to claim 10, characterized in that the first width is 63 mm, wherein the second width is 53 mm.
12. Battery pack according to claim 10 or 11, characterized in that a groove width of said grooves is in the range of 6 mm to 7 mm.
13. Battery pack according to claim 12, characterized in that said groove width is 6.5 mm.
14. Battery pack according to one of claims 10 to 13, characterized in that a distance (Dg) between each of said grooves and a top side of said mating protrusion is 6,6 mm.
15. Battery pack according to one of claims 10 to 14, characterized in that said set of electrical contacts is arranged at a front end of said mating protrusion and centrally with respect to the lateral sides of said mating protrusion.
2020100321 04 Mar 2020
16. Battery pack, in particular according to one of claims 1 to 15, with a housing having a mating side adapted to be mated with a mating side of a battery charger or power tool by inserting the battery pack into the battery charger or power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery pack, wherein the battery pack comprises a mating protrusion at said mating side, wherein said mating protrusion has a first axial stop at a front end thereof, the first axial stop being adapted to cooperate with a second axial stop of said battery charger or power tool in order to determine an inserted position of said battery pack and to inhibit further movement of the battery pack in the insertion direction when the battery pack is fully inserted into said battery charger or power tool, wherein said battery pack further comprises a latch an engagement surface of which is adapted to engage with a third axial stop of said battery charger or power tool when the battery pack is in the inserted position in order to inhibit movement of the battery pack opposite to said insertion direction, characterized in that a distance between said first axial stop and said engagement surface measured in the insertion direction is in the range of 84 mm to 86 mm.
17. Battery pack according to claim 16, characterized in that said distance between said first axial stop and said engagement surface measured in the insertion direction is 85.6 mm.
18. Battery pack according to claim 16 or 17, characterized in that a width of said latch measured in a lateral direction perpendicular to said insertion direction is 33 mm.
19. Battery charger for a battery pack according to one of claims 1 to 18, with a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the battery charger along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery charger, wherein the electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced from one another in a lateral direction of the battery charger, the lateral direction being perpendicular to the insertion direction, and wherein the blade contacts are aligned parallel to one another, characterized in that a center-to-center distance between any two of said blade contacts is an integer multiple of 7 mm.
20. Battery charger according to claim 19, characterized in that a center-to-center distance (D) between any two neighboring blade contacts of said set of electrical contacts is 7 mm.
21. Battery charger according to claim 19 or 20, characterized in that said set of electrical contacts comprises four blade contacts equally spaced from one another by a center-to-center distance of 7 mm.
22. Battery charger according to claim 21, characterized in that said set of electrical contacts comprises an outer first contact which serves as a negative contact for charging the battery pack,
2020100321 04 Mar 2020
- a neighboring second contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger,
- a neighboring third contact which serves as a communication contact for transmitting a communication signal between said battery pack and said battery charger, and
- a neighboring fourth contact which serves as a positive contact for charging the battery pack.
23. Battery charger according to claim 22, characterized in that said set of electrical contacts further comprises a detection contact which is arranged at the same position as the outer first contact in that said first contact and said detection contact share a common extension plane such that said outer first contact and said detection contact are adapted to be short-circuited by a corresponding single contact of the battery pack.
24. Battery charger according to claim 23, characterized in that the detection contact is shorter than the first to fourth contacts such that said outer first contact and said detection contact are short-circuited after an electrical connection between the first to fourth contacts of the battery charger and corresponding electrical contacts of the battery pack has been established when the battery pack is inserted into the battery charger.
25. Battery charger according to claim 23 or 24, characterized in that the battery charger comprises a detection circuit which is adapted to determine whether a battery pack is inserted in the battery charger by detecting whether said first contact and said detection contact are shortcircuited.
26. Battery charger according to one of claims 19 to 25, characterized in that said male blade contacts of the battery charger are adapted to be received in female contact terminals of the battery pack.
27. Battery charger, in particular according to one of claims 19 to 26, for a battery pack according to one of claims 1 to 18, with a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the battery charger along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery charger, wherein a lateral direction of the battery charger is defined to be perpendicular to the insertion direction, wherein the battery charger comprises a mating recess at said mating side, wherein said mating recess has a third width measured in the lateral direction, wherein said mating recess comprises a pair of ribs at opposing lateral sides of the mating recess, wherein said ribs protrude towards each other in the lateral direction and extend along the insertion direction, and wherein said ribs are adapted to be received in corresponding grooves of said battery pack in order to provide a form-locking engagement between said battery pack and said
2020100321 04 Mar 2020 battery charger in a direction perpendicular to said insertion direction if the battery pack is inserted into said battery charger, and wherein a distance between said ribs measured in the lateral direction defines a fourth width of the mating recess, characterized in that the third width is in the range of 63 mm to 66 mm, wherein the fourth width is in the range of 53 mm to 56 mm.
28. Battery charger according to claim 27, characterized in that the third width is 65.2 mm, wherein the fourth width is 55 mm.
29. Battery charger according to claim 27 or 28, characterized in that a distance between the ribs and a bottom of said mating recess is in the range of 6.6 mm to 7.0 mm.
30. Battery charger according to claim 29, characterized in that said distance between the ribs and said bottom of said mating recess is 6.75 mm.
31. Battery charger according to one of claims 27 to 30, characterized in that a rib width of said ribs is in the range of 4 mm to 6.5 mm.
32. Battery charger, in particular according to one of claims 19 to 31, for a battery pack according to one of claims 1 to 18, with a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the battery charger along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery charger, wherein a lateral direction of the battery charger is defined to be perpendicular to the insertion direction, wherein the battery charger comprises a second axial stop being adapted to cooperate with a first axial stop of said battery pack, in order to determine an inserted position of said battery pack and to inhibit further movement of the battery pack in the insertion direction when the battery pack is fully inserted into said battery charger, wherein said battery charger further comprises a third axial stop which is adapted to be engaged by a latch of said battery pack when the battery pack is in the inserted position in order to inhibit movement of the battery pack opposite to said insertion direction, characterized in that a distance between said second axial stop and said third axial stop measured in the insertion direction is in the range of 85.6 mm to 88 mm.
33. Battery charger according to claim 32, characterized in that said distance between said second axial stop and said third axial stop measured in the insertion direction is 86.29 mm.
34. Battery charger according to claim 32 or 33, characterized in that said third axial stop is formed by a wall of a locking recess in the battery charger.
35. Battery charger according to claim 34, characterized in that a width of said locking recess measured in the lateral direction is at least 33 mm.
2020100321 04 Mar 2020
36. Power tool for a battery pack according to one of claims 1 to 18, with a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the power tool, wherein the electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced from one another in a lateral direction of the power tool, the lateral direction being perpendicular to the insertion direction, and wherein the blade contacts are aligned parallel to one another, characterized in that a center-to-center distance between any two of said blade contacts is an integer multiple of 7 mm.
37. Power tool according to claim 36, characterized in that a center-to-center distance between at least two neighboring blade contacts of said set of electrical contacts is 7 mm.
38. Power tool according to claim 36 or 37, characterized in that said set of electrical contacts comprises four blade contacts, wherein three of said four blade contacts are equally spaced from one another by a center-to-center distance of 7 mm, and wherein the fourth blade contact of said four blade contacts is spaced from its neighboring blade contact by a center-to-center distance of 14 mm.
39. Power tool according to claim 38, characterized in that said set of electrical contacts comprises
- an outer first contact which serves as a negative contact for discharging the battery pack and powering the power tool,
- a neighboring second contact which serves as a communication contact for transmitting a communication signal between said battery pack and said power tool,
- a neighboring third contact which serves as a communication contact for transmitting a communication signal between said battery pack and said power tool, and
- a neighboring fourth contact which serves as a positive contact for discharging the battery pack and powering the power tool.
40. Power tool according to one of claims 36 to 39, characterized in that said male blade contacts of the power tool are adapted to be received in female contact terminals of the battery pack.
41. Power tool, in particular according to one of claims 36 to 40, for a battery pack according to one of claims 1 to 18, with a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the power tool, wherein a lateral direction of the power tool is defined to be perpendicular to the insertion
2020100321 04 Mar 2020 direction, wherein the power tool comprises a mating recess at said mating side, wherein said mating recess has a third width measured in the lateral direction, wherein said mating recess comprises a pair of ribs at opposing lateral sides of the mating recess, wherein said ribs protrude towards each other in the lateral direction and extend along the insertion direction, and wherein said ribs are adapted to be received in corresponding grooves of said battery pack in order to provide a form-locking engagement between said battery pack and said power tool in a direction perpendicular to said insertion direction if the battery pack is inserted into said power tool, and wherein a distance between said ribs measured in the lateral direction defines a fourth width of the mating recess, characterized in that the third width is in the range of 63 mm to 66 mm, wherein the fourth width is in the range of 53 mm to 56 mm.
42. Power tool according to claim 41, characterized in that the third width is 65.2 mm, wherein the fourth width is 55 mm.
43. Power tool according to claim 41 or 42, characterized in that a distance between the ribs and a bottom of said mating recess is in the range of 6.6 mm to 7.0 mm.
44. Power tool according to claim 43, characterized in that said distance between the ribs and said bottom of said mating recess is 6.75 mm.
45. Power tool according to one of claims 41 to 44, characterized in that a rib width of said ribs is in the range of 4 mm to 6.5 mm.
46. Power tool, in particular according to one of claims 36 to 45, for a battery pack according to one of claims 1 to 18, with a housing having a mating side adapted to be mated with a mating side of said battery pack by inserting the battery pack into the power tool along an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the power tool, wherein a lateral direction of the power tool is defined to be perpendicular to the insertion direction, wherein the power tool comprises a second axial stop being adapted to cooperate with a first axial stop of said battery pack, in order to determine an inserted position of said battery pack and to inhibit further movement of the battery pack in the insertion direction when the battery pack is fully inserted into said power tool, wherein said power tool further comprises a third axial stop which is adapted to be engaged by a latch of said battery pack when the battery pack is in the inserted position in order to inhibit movement of the battery pack opposite to said insertion direction, characterized in that a distance between said second axial stop and said third axial stop measured in the insertion direction is in the range of 85.6 mm to 88 mm.
47. Power tool according to claim 46, characterized in that said distance between said second axial stop and said third axial stop measured in the insertion direction is 86.29 mm.
2020100321 04 Mar 2020
48. Power tool according to claim 46 or 47, characterized in that said third axial stop is formed by a wall of a locking recess in the power tool.
49. Power tool according to claim 48, characterized in that a width of said locking recess measured in the lateral direction is at least 33 mm.
AU2020100321A 2019-09-05 2020-03-04 Battery pack for a power tool, battery charger for such battery pack, and power tool for such battery pack Active AU2020100321A4 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US29/704,572 2019-09-05
US29/704,580 2019-09-05
US29/704,580 USD929339S1 (en) 2019-09-05 2019-09-05 Electrical interface
US29/704,570 USD929334S1 (en) 2019-09-05 2019-09-05 Electrical interface
US29/704,570 2019-09-05
US29/704,572 USD929336S1 (en) 2019-09-05 2019-09-05 Electrical interface

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AU2020100321A Active AU2020100321A4 (en) 2019-09-05 2020-03-04 Battery pack for a power tool, battery charger for such battery pack, and power tool for such battery pack

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AU2020201614A1 (en) 2021-03-25

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