CN211654902U - Battery pack, charger for battery pack and electric tool for battery pack - Google Patents

Battery pack, charger for battery pack and electric tool for battery pack Download PDF

Info

Publication number
CN211654902U
CN211654902U CN202020249903.4U CN202020249903U CN211654902U CN 211654902 U CN211654902 U CN 211654902U CN 202020249903 U CN202020249903 U CN 202020249903U CN 211654902 U CN211654902 U CN 211654902U
Authority
CN
China
Prior art keywords
battery pack
battery
battery charger
power tool
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020249903.4U
Other languages
Chinese (zh)
Inventor
C·卡格尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Techtronic Cordless GP
Original Assignee
Techtronic Cordless GP
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
Priority claimed from US29/704,572 external-priority patent/USD929336S1/en
Priority claimed from US29/704,570 external-priority patent/USD929334S1/en
Priority claimed from US29/704,580 external-priority patent/USD929339S1/en
Application filed by Techtronic Cordless GP filed Critical Techtronic Cordless GP
Application granted granted Critical
Publication of CN211654902U publication Critical patent/CN211654902U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

Landscapes

  • 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

The utility model discloses a group battery, be used for charger of group battery and electric tool for group battery, this group battery has the casing, the cooperation side of casing is suitable for through inserting the group battery in battery charger or electric tool along the direction of insertion to cooperate with the cooperation side of battery charger or electric tool, wherein a set of electric contact is arranged at the cooperation side of group battery, wherein electric contact is configured into the spill contact terminal, wherein electric contact separates each other in the transverse direction of group battery, this transverse direction is perpendicular to the direction of insertion, and wherein electric contact arranges each other in parallel, this electric contact is arranged in the casing of group battery, behind the slot in the casing of group battery, wherein the ratio of the width of slot and the centre-to-centre spacing between the adjacent electric contact is between 0.2 to 0.6. The utility model discloses a group battery guarantees safe processing and operation and does not allow incorrect installation.

Description

Battery pack, charger for battery pack and electric tool for battery pack
Technical Field
The utility model relates to a group battery, be used for the charger of group battery and be used for electric tool of group battery.
Background
The battery pack comprises a housing having a mating side adapted to mate with a mating side of the battery charger or power tool by inserting the battery pack into the battery charger or power tool in 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 apart from each other in a lateral direction of the battery pack, the lateral direction being perpendicular to the insertion direction, and wherein the electrical contacts are arranged parallel to each other.
Batteries of the above type are widely used and available from different manufacturers. Such battery packs must meet a number of requirements, particularly when used with power tools. Not only must the safe handling of the battery pack be ensured. Since not all battery packs on the market can be used with all power tools, for example due to different operating voltages and/or different power classes and/or different pin assignments, incorrect mounting of the battery packs must be prevented in any case. Furthermore, a certain minimum distance between the electrical contact pins of the battery pack must be ensured to ensure safe operation of the power tool and the battery pack.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to provide a new battery pack which guarantees safe handling and operation and does not allow incorrect installation, for example on electric tools requiring different battery packs with different operating voltages and/or rated electric powers.
This object is solved by the following means of the present disclosure. Accordingly, the solution according to the object of the present invention exists if the center-to-center distance between any two of said electrical contacts is an integer multiple of 7 mm.
Advantageous embodiments of the invention are the subject matter of the dependent claims.
In a first aspect of the present invention a battery pack 1 is provided, having a battery pack housing, a mating side of which is adapted to mate with a mating side of a battery charger 2 or a power tool 3 by inserting the battery pack 1 into the battery charger 2 or the power tool 3 in an insertion direction I, wherein a set of battery pack electrical contacts is arranged at the mating side of the battery pack, wherein the battery pack electrical contacts are configured as female contact terminals, wherein the battery pack electrical contacts are spaced apart from each other in a lateral direction of the battery pack, which lateral direction is perpendicular to the insertion direction, and wherein the battery pack electrical contacts are arranged parallel to each other, which battery pack electrical contacts are arranged within the battery pack housing of the battery pack 1, behind a slot 5 in the battery pack housing of the battery pack 1, wherein a ratio of a width of the slot 5 to a center distance D between adjacent battery pack electrical contacts P1-P5 is 0.2 To 0.6.
In this first aspect, the center-to-center distance between any two of the battery pack electrical contacts is an integral multiple of 7 mm.
In this first aspect, the set of battery pack electrical contacts includes five electrical contacts.
In this first aspect, the set of battery pack electrical contacts includes: -an external first contact which serves as a negative contact for charging or discharging the battery pack 1, -an adjacent second contact which serves as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2 or the power tool 3, -an adjacent third contact which serves as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2 or the power tool 3, -an adjacent fourth contact which serves as a positive contact for charging or discharging the battery pack 1 with a small current, and-an adjacent external fifth contact which serves as a positive contact for charging or discharging the battery pack 1 with a large current.
In this first aspect, the first and fifth contacts have larger dimensions than the second, third and fourth contacts to carry a larger maximum current.
In this first aspect, the first contact is located in front of the second to fifth contacts, as seen in the insertion direction I, so that, with the battery pack 1 inserted into the battery charger 2 or the power tool 3, the first contact of the battery pack 1 comes into contact with the corresponding contact of the charger 2 or the power tool 3 before the second to fifth contacts of the battery pack 1.
In this first aspect, the center-to-center distance D between any two adjacent battery electrical contacts of the set of battery electrical contacts is 7 mm.
In this first aspect, the width of the slot 5 is in the range of 2.5mm to 3.0mm, wherein the width of the slot is preferably 2.72 mm.
In this first aspect, the female contact terminals are adapted to receive male blade contacts of the battery charger 2 or the power tool 3.
In this first aspect, the battery pack 1 comprises a mating protrusion 6 on the mating side, wherein the mating protrusion 6 has a first width W1 measured in a transverse direction perpendicular to the insertion direction I, wherein the mating protrusion 6 comprises a pair of recesses 7 at its opposite transverse sides 16, the recesses 7 extending along the insertion direction I and being adapted to receive corresponding form-fitting elements of the battery charger 2 or the power tool 3 for providing a form-locking engagement between the battery pack 1 and the battery charger 2 or the power tool 3 in a direction perpendicular to the insertion direction I in case the battery pack 1 is inserted into the charger 2 or the power tool 3, and wherein a distance between bottoms of the recesses 7 measured in the transverse direction defines a second width W2 of the mating protrusion 6, wherein the first width W1 is in the range of 63mm to 65mm, wherein the second width W2 is in the range of 53mm to 55 mm.
In this first aspect, the first width W1 is 63mm, wherein the second width W2 is 53 mm.
In this first aspect, the width Wg of the groove 7 is in the range of 6mm to 7 mm.
In this first aspect, the width Wg of the groove 7 is 6.5 mm.
In this first aspect, the distance between each of the recesses 7 and the top side 9 of the mating protrusion 6 is 6.6 mm.
In this first aspect, the set of battery pack electrical contacts is arranged at the front end 10 of the mating protrusion 6 and is arranged centrally with respect to the side 16 of the mating protrusion 6.
In this first aspect, the battery pack 1 comprises a mating protrusion 6 on the mating side, wherein the mating protrusion 6 has a first axial stop 11 at its front end 10, the first axial stop 11 being adapted to mate with a second axial stop 12 of the battery charger 2 or the power tool 3 in order to determine an inserted position of the battery pack 1 and to prevent further movement of the battery pack 1 in the insertion direction I when the battery pack 1 is fully inserted into the battery charger 2 or the power tool 3, wherein the battery pack 1 further comprises a latch 14, an engagement surface 15 of the latch 14 being adapted to engage with a third axial stop 13 of the battery charger 2 or the power tool 3 when the battery pack 1 is in an inserted position so as to prevent movement of the battery pack 1 opposite to the insertion direction I, wherein the distance between the first axial stop 11 and the engagement surface 15 measured in the insertion direction I is in the range of 84mm to 86 mm.
In this first aspect, the distance between the first axial stop 11 and the engagement surface 15 measured in the insertion direction is 85.6 mm.
In this first aspect, the width WI of the latch 14 measured in the transverse direction perpendicular to the insertion direction I is 33 mm.
In this first aspect, the battery pack 1 comprises mating protrusions 6 on the mating side, wherein the mating protrusions 6 have a first width W1 measured in a transverse direction perpendicular to the insertion direction I, the ratio of the first width W1 to the center-to-center distance D being between 9 and 9.3.
In this first aspect, the mating protrusion 6 comprises a pair of recesses 7 at opposite lateral sides 16 thereof, the recesses 7 extending along an insertion direction I and being adapted to receive corresponding form-fitting elements of the battery charger 2 or the power tool 3 to provide a form-locking engagement between the battery pack 1 and the battery charger 2 or the power tool 3 in a direction perpendicular to the insertion direction I in case the battery pack 1 is inserted into the charger 2 or the power tool 3, and wherein a distance between bottoms of the recesses 7 measured in the lateral direction defines a second width W2 of the mating protrusion 6, the ratio of the first width W1 to the second width W2 being between 1.1-1.25.
In this first aspect, the battery pack 1 comprises a mating protrusion 6 on the mating side, wherein the mating protrusion 6 has a first axial stop 11 at its front end 10, the first axial stop 11 being adapted to mate with a second axial stop 12 of the battery charger 2 or the power tool 3 in order to determine an inserted position of the battery pack 1 and to prevent further movement of the battery pack 1 in the insertion direction I when the battery pack 1 is fully inserted into the battery charger 2 or the power tool 3, wherein the battery pack 1 further comprises a latch 14, an engagement surface 15 of the latch 14 being adapted to engage with a third axial stop 13 of the battery charger 2 or the power tool 3 when the battery pack 1 is in an inserted position so as to prevent movement of the battery pack 1 opposite to the insertion direction I, wherein the ratio of the distance measured in the insertion direction I between the first axial stop 11 and the engagement surface 15 to the center distance D is between 12 and 12.3.
In this first aspect, the ratio of the width Wg of the groove 7 to the center-to-center distance D is between 0.85 and 1.
In this first aspect, the ratio of the width WI of the latch 14 to the center-to-center distance D is between 4.6 and 4.8.
In this first aspect, the ratio of the width Wg of the grooves 7 to the distance between each of the grooves 7 and the top side 9 of the mating protrusion 6 is between 0.909 and 1.061.
In a second aspect of the present invention, a battery charger 2 for a battery pack 1 is provided, the battery charger having a battery charger housing, a mating side of the battery charger housing being adapted to mate with the mating side of the battery pack 1 by inserting the battery pack 1 into the battery charger 2 along an insertion direction I, wherein a set of battery charger electrical contacts is arranged at the mating side of the battery charger 2, wherein the battery charger electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced apart from each other in a lateral direction of the battery charger 2, which lateral direction is perpendicular to the insertion direction I, and wherein the blade contacts are arranged parallel to each other.
In this second aspect, the center-to-center distance between any two of the blade contacts is an integer multiple of 7 mm.
In this second aspect, the center-to-center distance D between any two adjacent blade contacts of the set of battery charger electrical contacts is 7 mm.
In this second aspect, the set of battery charger electrical contacts includes four blade contacts that are equally spaced from each other by a center-to-center distance D of 7 mm.
In this second aspect, the set of battery charger electrical contacts includes: -a first contact of an external battery charger, which first contact of the external battery charger serves as a negative contact for charging the battery pack 1, -a second contact of an adjacent battery charger, which second contact of the adjacent battery charger serves as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2, -a third contact of an adjacent battery charger, which third contact of the adjacent battery charger serves as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2, and-a fourth contact of an adjacent battery charger, which fourth contact of the adjacent battery charger serves as a positive contact for charging the battery pack 1.
In this second aspect, the set of battery charger electrical contacts further comprises battery charger detection contacts arranged in the same position as the first contacts of the battery charger, wherein the first contacts of the battery charger and the detection contacts of the battery charger share a common plane of extension, such that the first contacts of the battery charger and the detection contacts of the battery charger are adapted to be short-circuited by respective single contacts of the battery pack 1.
In this second aspect, the detection contacts of the battery charger are shorter than the first to fourth contacts of the battery charger, so that when the battery pack 1 is inserted into the battery charger 2, the first contacts of the battery charger and the detection contacts of the battery charger are short-circuited after electrical connection is established between the first to fourth contacts of the battery charger and the corresponding electrical contacts of the battery pack 1.
In this second aspect, the battery charger 2 comprises a detection circuit adapted to determine whether a battery pack 1 is inserted into the battery charger 2 by detecting whether a first contact of the battery charger and a detection contact of the battery charger are short-circuited.
In this second aspect, the male blade contacts of the battery charger 2 are adapted to be received in female contact terminals of the battery pack 1.
In this second aspect, a set of battery charger electrical contacts is arranged at the mating side of the battery charger 2, wherein a lateral direction of the battery charger 2 is defined perpendicular to the insertion direction I, wherein the battery charger 2 comprises a mating recess 18 at the mating side, wherein the mating recess 18 has a third width W3 measured in the lateral direction, wherein the mating recess 18 comprises a pair of ribs 8 at opposite lateral sides 19 of the mating recess 18, wherein the ribs 8 protrude towards each other in the lateral direction and extend along the insertion direction I, and wherein the ribs 8 are adapted to be received in respective grooves 7 of the battery pack 1 to provide a form-locking engagement between the battery pack 1 and the battery charger 2 in a direction perpendicular to the insertion direction I in case the battery pack 1 is inserted into the battery charger 2, and wherein a distance between the ribs measured in the transverse direction defines a fourth width W4 of the mating notch 18, wherein the third width W3 is in the range of 63mm to 66mm, wherein the fourth width W4 is in the range of 53mm to 56 mm.
In this second aspect, the third width W3 is 65.2mm, wherein the fourth width W4 is 55 mm.
In this second aspect, the distance between the rib 8 and the bottom 20 of the mating recess 18 is in the range of 6.6mm to 7.0 mm.
In this second aspect, the distance between the rib 8 and the bottom 20 of the mating recess 18 is 6.75 mm.
In this second aspect, the rib width Wr of the rib 8 is in the range of 4mm to 6.5 mm.
In this second aspect, a set of battery charger electrical contacts is arranged on the mating side of the battery charger 2, wherein the lateral direction of the battery charger 2 is defined perpendicular to the insertion direction I, wherein the battery charger 2 comprises a second axial stop 12 adapted to cooperate with a first axial stop 11 of the battery pack 1 in order to determine the insertion position of the battery pack 1 and prevent further movement of the battery pack 1 in the insertion direction when the battery pack 1 is fully inserted into the battery charger 2, wherein the battery charger 2 further comprises a third axial stop 13, the third axial stop 13 being adapted to be engaged by a latch 14 of the battery pack 1 when the battery pack 1 is in the insertion position to prevent movement of the battery pack 1 opposite to the insertion direction I, wherein the distance between the second axial stop 12 and the third axial stop 13 measured in the insertion direction I is 85.6mm to 88 mm.
In this second aspect, the distance between the second axial stop 12 and the third axial stop 13, measured in the insertion direction I, is 86.29 mm.
In this second aspect, the third axial stop 13 is formed by a wall of a locking recess 21 in the battery charger 2.
In this second aspect, the width of the locking notch 21 measured in the transverse direction is at least 33 mm.
In this second aspect, a set of battery charger electrical contacts is arranged at the mating side of the battery charger 2, wherein a lateral direction of the battery charger 2 is defined perpendicular to the insertion direction I, wherein the battery charger 2 comprises a mating notch 18 at the mating side, wherein the mating notch 18 has a third width W3 measured in the lateral direction, the ratio of the third width W3 to the center distance D being between 9-9.43.
In this second aspect, the mating recess 18 comprises a pair of ribs 8 at opposite lateral sides 19 of the mating recess 18, wherein the ribs 8 project towards each other in a lateral direction and extend along the insertion direction I, and wherein the ribs 8 are adapted to be received in respective grooves 7 of the battery pack 1 to provide a form-locking engagement between the battery pack 1 and the battery charger 2 in a direction perpendicular to the insertion direction I in case the battery pack 1 is inserted into the battery charger 2, and wherein a distance between the ribs measured in the lateral direction defines a fourth width W4 of the mating recess 18, the ratio of the third width W3 to the fourth width W4 being between 1.125-1.245.
In this second aspect, the battery charger 2 comprises a second axial stop 12 adapted to cooperate with a first axial stop 11 of the battery pack 1 so as to determine an insertion position of the battery pack 1 and prevent further movement of the battery pack 1 in an insertion direction when the battery pack 1 is fully inserted in the battery charger 2, wherein the battery charger 2 further comprises a third axial stop 13, the third axial stop 13 being adapted to be engaged by a latch 14 of the battery pack 1 when the battery pack 1 is in the insertion position so as to prevent movement of the battery pack 1 opposite to the insertion direction I, the ratio of the distance between the second axial stop 12 and the third axial stop 13, measured in the insertion direction I, to the centre distance D being between 12.2 and 12.6.
In this second aspect, the ratio of the width of the locking recess 21 of the battery charger 2 measured in the lateral direction to the center-to-center distance D is greater than 4.7.
In this second aspect, the ratio of the rib width Wr of the rib 8 to the center-to-center distance D is between 0.57 and 0.929.
In this second aspect, the ratio of the rib width Wr of the rib 8 to the distance between the rib 8 and the bottom 20 of the fitting recess 18 is between 0.571 and 0.985.
According to a third aspect of the present invention, a power tool 3 for a battery pack 1 is provided, the power tool 3 having a power tool housing, a mating side of the power tool housing being adapted to mate with a mating side of the battery pack 1 by inserting the battery pack 1 into the power tool 3 in an insertion direction I, wherein a set of power tool electrical contacts is arranged at the mating side of the power tool 3, wherein the power tool electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced apart from each other in a lateral direction of the power tool 3, which lateral direction is perpendicular to the insertion direction I, and wherein the blade contacts are arranged parallel to each other, wherein a center-to-center distance between any two of the blade contacts is an integer multiple of 7 mm.
In a third aspect, the center-to-center distance D between at least two adjacent blade contacts of the set of power tool electrical contacts is 7 mm.
In a third aspect, the set of power tool electrical contacts includes four blade contacts, wherein three of the four blade contacts are equally spaced from each other by a center-to-center distance of 7mm, wherein a fourth blade contact of the four blade contacts is spaced from an adjacent blade contact by a center-to-center distance of 14 mm.
In a third aspect, the set of power tool electrical contacts includes: a first contact of an external power tool, which serves as a negative contact for discharging the battery pack 1 and supplying power to the power tool 3, a second adjacent contact T2, which serves as a communication contact for transmitting communication signals between the battery pack 1 and the power tool 3, a third contact of an adjacent power tool, which serves as a communication contact for transmitting communication signals between the battery pack 1 and the power tool 3, and a fourth contact of an adjacent power tool, which serves as a positive contact for discharging the battery pack 1 and supplying power to the power tool 3.
In a third aspect, the male blade contact of the power tool 3 is adapted to be received in the female contact terminal of the battery pack 1.
In a third aspect, a transverse direction of the power tool 3 is defined perpendicular to the insertion direction I, wherein the power tool 3 comprises a mating recess 18 at the mating side, wherein the mating recess 18 has a third width W3 measured in the transverse direction, wherein the mating recess 18 comprises a pair of ribs 8 at opposite transverse sides 19 of the mating recess 18, wherein the ribs 8 protrude towards each other in the transverse direction and extend along the insertion direction I, and wherein the ribs 8 are adapted to be received in respective grooves 7 of the battery pack 1 in order to provide a form-locking engagement between the battery pack 1 and the power tool 3 in a direction perpendicular to the insertion direction I in case the battery pack 1 is inserted into the power tool 3, and wherein a distance between the ribs 8 measured in the transverse direction defines a fourth width W4 of the mating recess 18, wherein the third width W3 is in the range of 63mm to 66mm, wherein the fourth width W4 is in the range of 53mm to 56 mm.
In a third aspect, the third width W3 is 65.2mm, wherein the fourth width W4 is 55 mm.
In a third aspect, the distance between the rib 8 and the bottom 20 of the mating recess 18 is in the range of 6.6mm to 7.0 mm.
In a third aspect, the distance between the rib 8 and the bottom 20 of the mating recess 18 is 6.75 mm.
In the third aspect, the rib width Wr of the rib 8 is in the range of 4mm to 6.5 mm.
In a third aspect, the transverse direction of the power tool 3 is defined perpendicular to the insertion direction I, wherein said power tool 3 comprises a second axial stop 12 adapted to cooperate with a first axial stop 11 of said battery pack 1, to determine the insertion position of the battery pack 1 and to prevent further movement of the battery pack 1 in the insertion direction I when the battery pack 1 is fully inserted into the power tool 3, wherein said power tool 3 further comprises a third axial stop 13 adapted to prevent, when said battery pack 1 is in said insertion position, is engaged by a latch 14 of the battery pack 1, to prevent the battery pack 1 from moving opposite to the insertion direction I, wherein the distance between the second axial stop 12 and the third axial stop 13, measured in the insertion direction I, is in the range of 85.6mm to 88 mm.
In a third aspect, the distance between the second axial stop 12 and the third axial stop 13, measured in the insertion direction I, is 86.29 mm.
In a third aspect, the third axial stop 13 is formed by a wall of a locking recess 21 in the power tool 3.
In a third aspect, the width of the locking notch 21 in the transverse direction is at least 33 mm.
According to a preferred embodiment of the invention, the center-to-center distance between any two adjacent electrical contacts of the set of electrical contacts is 7 mm.
According to another preferred embodiment of the invention, the set of electrical contacts comprises five electrical contacts. It is particularly preferred if the set of electrical contacts comprises exactly five electrical contacts.
According to another preferred embodiment of the present invention, the set of electrical contacts includes: an external first contact serving as a negative contact for charging or discharging the battery pack; an adjacent second contact serving as a communication contact for transmitting a communication signal between the battery pack and the battery charger or the power tool; an adjacent third contact for use as a communication contact for transmitting communication signals between the battery pack and the battery charger or power tool; an adjacent fourth contact point serving as a positive contact point for charging or discharging the battery pack with a small current; and an adjacent outer fifth contact that 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 10A. Preferably, the fifth contact serves as a positive contact for charging or discharging the battery pack at high currents of more than 10A, further preferably between 10A and 40A.
According to another preferred embodiment of the invention, the first contact and the fifth contact have larger dimensions than the second contact, the third contact and the fourth contact in order to carry a larger maximum current.
According to another preferred embodiment of the invention, the first contact is located in front of the second to fifth contacts, seen in the insertion direction, so that in the case of inserting a battery pack into the battery charger or the electric tool, the first contact of the battery pack comes into contact with the corresponding contact of the battery charger or the electric tool before the other contacts of the battery pack. This ensures safe operation.
According to another preferred embodiment of the invention, the electrical contacts are arranged in the housing of the battery pack behind a slot in the housing of the battery pack. This embodiment further improves the security. Preferably, the center-to-center distance between the two slots is also 7 mm. It is particularly advantageous if the width of the slot is in the range of 2.5mm to 3.0mm, wherein the width of the slot is preferably 2.72 mm.
According to another preferred embodiment of the invention, the female contact terminal is adapted to receive a male blade contact of a battery charger or a power tool.
In another advantageous aspect of the invention, a battery pack is provided, having a housing, a mating side of which is adapted to mate with a mating side of a battery charger or a power tool by inserting the battery pack into the battery charger or the 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 the mating side, wherein the mating protrusion has a first width measured in a transverse direction perpendicular to the insertion direction, wherein the mating protrusion comprises a pair of recesses at opposite transverse sides thereof, which extend along the insertion direction and are adapted to receive corresponding form-fitting elements of the battery charger or the power tool to provide a form-locking engagement between the battery pack and the battery charger or the power tool in a direction perpendicular to the insertion direction in case a battery pack is inserted into the battery charger or the power tool, and wherein a distance between bottoms of the grooves measured in the transverse direction defines a second width of the mating protrusion. According to the utility model discloses, first width is in 63mm to 65 mm's within range, and wherein the second width is in 53mm to 55 mm's within range.
According to a preferred embodiment of the invention, the first width is 63mm, wherein the second width is 53 mm.
According to another preferred embodiment of the invention, the groove width of the groove is in the range of 6mm to 7 mm. Preferably, the groove width is 6.5 mm.
According to another preferred embodiment of the invention, the distance between each of said recesses and the top side of said mating protrusion is 6.6 mm.
According to another preferred embodiment of the invention, the set of electrical contacts is arranged at a front end of the mating protrusion and centrally with respect to a lateral side of the mating protrusion.
In another advantageous aspect of the invention, a battery pack is provided, comprising a housing, a mating side of the housing being adapted to mate with a mating side of a battery charger or a power tool by inserting the battery pack into the mating side of the battery charger or the 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 the mating side, wherein the mating protrusion has a first axial stop at its front end, the first axial stop being adapted to mate with a second axial stop of the battery charger or the power tool in order to determine an insertion position of the battery pack and to prevent further movement of the battery pack in the insertion direction when the battery pack is fully inserted into the battery charger or the power tool, wherein the battery pack further comprises a latch, when the battery pack is in the insertion position, the engagement surface of the latch is adapted to engage a third axial stop of the battery charger or power tool to prevent movement of the battery pack in a direction opposite the insertion direction. According to the invention, the distance between the first axial stop and the engagement surface, measured in the direction of insertion, is in the range of 84mm to 86 mm.
According to a preferred embodiment of the invention, the distance between the first axial stop and the engagement surface measured in the direction of insertion is 85.6 mm.
According to another preferred embodiment of the invention, the width of the latch measured in a transverse direction perpendicular to the insertion direction is 33 mm.
The utility model discloses still provide a battery charger that is used for according to the utility model discloses a group battery. The battery charger comprises a housing, a mating side of the housing being adapted to mate with a mating side of a 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 apart from each other in a lateral direction of the battery charger, the lateral direction being perpendicular to the insertion direction, and wherein the blade contacts are arranged parallel to each other. According to the utility model discloses, the centre-to-centre spacing between arbitrary two in the blade contact is 7 mm's integer times.
According to a preferred embodiment of the invention, the centre-to-centre distance between any two adjacent blade contacts of the set of electrical contacts is 7 mm.
According to another preferred embodiment of the invention, the set of electrical contacts comprises four blade contacts, which are equidistantly spaced from each other by a center distance of 7 mm.
According to another preferred embodiment of the present invention, the set of electrical contacts includes: an external first contact that serves as a negative contact for charging the battery pack; an adjacent second contact that serves as a communication contact for transmitting communication signals between the battery pack and the battery charger; an adjacent third contact for use as a communication contact for transmitting communication signals between the battery pack and the battery charger; and an adjacent fourth contact that serves as a positive contact for charging the battery pack. It is particularly advantageous that the set of electrical contacts further comprises a detection contact arranged at the same position as the external first contact, wherein the first contact and the detection contact share a common plane of extension, so that the external first contact and the detector contact are adapted to be short-circuited by respective individual contacts of the battery pack.
According to a preferred embodiment, the detection contacts are shorter than the first to fourth contacts, so that when the battery pack is inserted into the battery charger, the external first contacts and the detection contacts are short-circuited after the electrical connection between the first to fourth contacts of the battery charger and the corresponding electrical contacts of the battery pack has been established. It is particularly advantageous if the battery charger comprises a detection circuit adapted to determine whether the battery pack is inserted into the battery charger by detecting whether said first contact and said detection contact are short-circuited.
According to another preferred embodiment of the invention said male blade contact of the battery charger is adapted to be received in a female contact terminal of the battery pack.
In another advantageous aspect of the invention, a battery charger is provided, comprising a housing, a mating side of which is adapted to mate with a mating side of a battery pack by inserting the battery pack into the battery charger in 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 perpendicular to the insertion direction, wherein the battery charger comprises a mating recess at the mating side, wherein the mating recess has a third width measured in the lateral direction, wherein the mating recess comprises a pair of ribs at opposite lateral sides of the mating recess, wherein the ribs protrude towards each other in the lateral direction and extend along the insertion direction, and wherein the ribs are adapted to be received in corresponding grooves of the battery pack, such that upon insertion of the battery pack into the battery charger, a positive locking engagement between the battery pack and the battery charger is provided in a direction perpendicular to the insertion direction, and wherein a distance between the ribs measured in a transverse direction defines a fourth width of the mating recess. According to the utility model discloses, the third width is in 63mm to 66 mm's within range, and wherein the fourth width is in 53mm to 56 mm's within range.
Preferably, the third width is 65.2mm, wherein the fourth width is 55 mm.
According to another preferred embodiment of the invention, the distance between the rib and the bottom of the mating recess is in the range of 6.6mm to 7.0 mm. It is particularly advantageous if said distance between the rib and said bottom of said mating recess is 6.75 mm.
According to another preferred embodiment of the invention, the rib width of the rib is in the range of 4mm to 6.5 mm.
In another advantageous aspect of the invention, a battery charger is provided, comprising a housing, a mating side of the housing being adapted to mate with a mating side of a battery pack by inserting the battery pack into the battery charger in an insertion direction, wherein a set of electrical contacts is arranged at the mating side of the battery charger, wherein a transverse direction of the battery charger is defined perpendicular to the insertion direction, wherein the battery charger comprises a second axial stop adapted to mate with a first axial stop of the battery pack, thereby determining an insertion position of the battery pack and inhibiting further movement of the battery pack in the insertion direction when the battery pack is fully inserted into the battery charger, wherein the battery charger further comprises a third axial stop adapted to be engaged by a latch of the battery pack when the battery pack is in the insertion position, thereby inhibiting the battery pack from moving in a direction opposite to the insertion direction. According to the utility model discloses, record in the direction of insertion the second axial dog with distance between the third axial dog is in 85.6mm to 88 mm's within range.
Preferably, the distance between the second and third axial stop, measured in the direction of insertion, is 86.29 mm.
According to another preferred embodiment of the invention, the third axial stop is formed by a wall of a locking recess in the battery charger.
According to another preferred embodiment of the invention, the width of the locking notch in the transverse direction is at least 33 mm.
The utility model discloses still provide an electric tool that is used for according to the utility model discloses a group battery. The power tool comprises a housing having a mating side adapted to mate with a mating side of a battery pack by inserting the battery pack into the power tool in 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 apart from each other in a transverse direction of the power tool, the transverse direction being perpendicular to the insertion direction, and wherein the blade contacts are arranged parallel to each other. According to the utility model discloses, the centre-to-centre spacing between arbitrary two in the blade contact is 7 mm's integer times.
According to a preferred embodiment of the invention, the centre-to-centre distance between at least two adjacent blade contacts of the set of electrical contacts is 7 mm.
According to another preferred embodiment of the invention, the set of electrical contacts comprises four blade contacts, wherein three of the four blade contacts are equally spaced from each other by a center distance of 7mm, and wherein a fourth blade contact of the four blade contacts is spaced from its neighboring blade contact by a center distance of 14 mm.
According to another preferred embodiment of the present invention, the set of electrical contacts includes: an external first contact that serves as a negative contact for discharging the battery pack and powering the power tool; an adjacent second contact that serves as a communication contact for transmitting a communication signal between the battery pack and the power tool; an adjacent third contact that serves as a communication contact for transmitting a communication signal between the battery pack and the power tool; and an adjacent fourth contact that serves as a positive contact for discharging the battery pack and powering the power tool.
According to another preferred embodiment of the invention, the male blade contact of the power tool is adapted to be received in a female contact terminal of the battery pack.
In another advantageous aspect of the invention, a power tool is provided, comprising a housing, a mating side of the housing being adapted to mate with a mating side of a 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 perpendicular to the insertion direction, wherein the power tool comprises a mating recess at the mating side, wherein the mating recess has a third width measured in the lateral direction, wherein the mating recess comprises a pair of ribs at opposite lateral sides of the mating recess, wherein the ribs protrude towards each other in the lateral direction and extend along the insertion direction, and wherein the ribs are adapted to be received in corresponding grooves of the battery pack such that, in case of inserting the battery pack into the power tool, a positive locking engagement between the battery pack and the power tool is provided in a direction perpendicular to the insertion direction, and wherein a distance between the ribs measured in the transverse direction defines a fourth width of the mating recess. According to the utility model discloses, the third width is in 63mm to 66 mm's within range, and wherein the fourth width is in 53mm to 56 mm's within range.
Preferably, the third width is 65.2mm, wherein the fourth width is 55 mm.
According to another preferred embodiment of the invention, the distance between the rib and the bottom of the mating recess is in the range of 6.6mm to 7.0 mm. It is particularly advantageous if said distance between the rib and said bottom of said mating recess is 6.75 mm.
According to another preferred embodiment of the invention, the rib width of the rib is in the range of 4mm to 6.5 mm.
In another advantageous aspect of the present invention, there is provided a power tool comprising a housing, a mating side of the housing adapted to mate with a mating side of a battery pack by inserting the battery pack into the power tool along an insertion direction, wherein a set of electrical contacts is arranged on a mating side of the power tool, wherein a lateral direction of the power tool is defined perpendicular to the insertion direction, wherein the power tool comprises a second axial stop adapted to cooperate with the first axial stop, thereby determining an insertion position of the battery pack and preventing the battery pack from further moving in an insertion direction when the battery pack is fully inserted into the power tool, wherein the power tool further comprises a third axial stop adapted to engage a latch of the battery pack when the battery pack is in the inserted position to prevent movement of the battery pack in a direction opposite the insertion direction. According to the utility model discloses, record in the direction of insertion the second axial dog with distance between the third axial dog is in 85.6mm to 88 mm's within range.
Preferably, the distance between the second and third axial stop, measured in the direction of insertion, is 86.29 mm.
According to a preferred embodiment of the invention, the third axial stop is formed by a wall of a locking recess in the power tool. It is particularly advantageous if the width of the locking recess, measured in the transverse direction, is at least 33 mm.
Drawings
Embodiments of the present invention will be explained in more detail hereinafter with reference to the drawings.
Fig. 1 shows a perspective view of a battery pack 1 according to the invention.
Fig. 2 shows another perspective view of the battery pack 1 shown in fig. 1.
Fig. 3 is a side view of the battery pack shown in fig. 1 and 2.
Fig. 4 is a front view of the battery pack shown in fig. 1 to 3.
Fig. 5 is a plan view of the battery pack shown in fig. 1 to 4.
Fig. 6 shows a top view of fig. 5 with the housing portions open.
Fig. 7 shows a perspective view of the battery charger 2 according to the invention.
Fig. 8 shows a front view of the battery charger 2 shown in fig. 7.
Fig. 9 shows a top view of the battery charger 2 shown in fig. 7 and 8.
Fig. 10 shows a perspective view of the power tool 3 according to the present invention.
Fig. 11 shows a detail view of the fitting recess 18 of the power tool 3 shown in fig. 10 in a perspective view.
Fig. 12 shows a front detail view of the mating recess shown in fig. 11.
Fig. 13 shows a top detail view of the mating recess shown in fig. 11 and 12.
Detailed Description
Fig. 1 to 6 show a battery pack 1 for an electric power tool 3 shown in fig. 10 to 13, for example. The battery pack 1 includes a housing 4 having an upper mating side adapted to mate with the mating side of the battery charger 2 as shown in fig. 7 to 9 or with the mating side of the power tool 3 as shown in fig. 10 to 13. The mating is achieved by inserting the mating protrusion 6 of the battery pack into the mating recess 18 of the battery charger 2 or the power tool 3 in the insertion direction I shown in fig. 1, 2, 3, 5, 7 and 9.
As shown in fig. 6, a set of five electrical contacts P1-P5 is disposed on the mating side of the battery pack within the housing 4 of the battery pack 1 and behind the slot 5 of 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 of the battery charger 2 (see especially fig. 7) or the power tool 3 (see especially fig. 11); T1-T4. As shown in FIG. 6, the electrical contacts P1-P5 are arranged parallel to each other. The electrical contacts are spaced apart from each other in a transverse direction of the battery pack perpendicular to the insertion direction I. The center distance between any two electric contacts P1-P5 is integral multiple of 7 mm. More particularly, the center-to-center distance D between any two adjacent electrical contacts is 7 mm. The set of electrical contacts P1-P5 is arranged at the front end 10 of the mating protrusion 6 and centrally with respect to the lateral side 16 of the mating protrusion 6.
A set of electrical contacts P1-P5 includes: an external first contact point P1 serving as a negative contact point for charging or discharging the battery pack 1; an adjacent second contact P2 serving as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2 or the power tool 3; an adjacent third contact P3 serving as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2 or the power tool 3; an adjacent fourth contact point P4 serving as a positive contact point for charging or discharging the battery pack 1 with a small current smaller than the first value; an adjacent outer fifth contact P5, which serves as a positive contact for charging or discharging the battery pack 1 at a high current between the first and second values. The communication contacts P2 and P3 are used to exchange information about, for example, the battery model, the state of charge, or the battery temperature. As shown in fig. 6, the first contact P1 and the fifth contact P5 are sized larger than the second contact P2, the third contact P3, and the fourth contact P4 to carry a greater 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.
Furthermore, the first contact P1 is located in front of the second to fifth contacts P2-P5, as seen in the insertion direction I, so that in the case of a battery pack 1 inserted into the battery charger 2 or power tool 3, the first contact P1 of the battery pack 1 comes into contact with the corresponding contact C1 of the battery charger 2 or power tool 3 before the other contacts P2-P5 of the battery pack 1; t1.
As shown in fig. 4, the fitting projection 6 has a first width W1 measured in the lateral direction. It comprises a pair of recesses 7 on opposite lateral sides 16 thereof, said recesses 7 extending in an insertion direction I and being adapted to receive corresponding ribs 8 of a battery charger 2 or a power tool 3 in order to provide a form-locking engagement between said battery 1 and said battery charger 2 or power tool 3 in a direction perpendicular to said insertion direction I in the event of insertion of the battery 1 into said battery charger 2 or power tool 3. The distance between the bottoms of the grooves 7 measured in the transverse direction defines a second width W2 of the mating protrusion 6. In the embodiment shown, the first width W1 is 63mm, wherein the second width W2 is 53 mm. As shown in fig. 3, the width Wg of the groove 7 was 6.5 mm. The distance Dg between each of the grooves 7 and the top side 9 of the mating protrusion 6 is 6.6 mm.
As shown in fig. 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 of the power tool 3 (see in particular fig. 7 and 9) to determine the insertion position of said battery pack 1 and to prevent further movement of the battery pack 1 in the insertion direction I when the battery pack 1 is fully inserted in said battery charger 2 or power tool 3. The battery pack 1 further comprises a latch 14 having an engagement surface 15 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, to prevent movement of the battery pack 1 opposite to said insertion direction I. As shown in fig. 9, the third axial stopper 13 is formed by a wall of the locking recess 21 in the battery charger 2. The width WI of the latch 14 measured in the transverse direction is 33mm (fig. 5). The width WIr of the locking notch 21, measured in the transverse direction, is at least 33mm to ensure that the latch 14 can snap into the locking notch 21 (fig. 9). In the embodiment shown, the distance D1 between the first axial stop 11 and the engagement surface 15 measured in the insertion direction I is 85.6mm (fig. 5). The distance D2 between the second axial stop 12 and the third axial stop 13 measured in the insertion direction I is 86.29mm (fig. 9).
Further details of the battery charger 2 will be described below with reference to fig. 7 to 9.
The battery charger 2 comprises a housing 17, which housing 17 has a mating side adapted to mate with a mating side of the battery pack 1. A set of electrical contacts C1-C4 is disposed on the mating side of the battery charger 2. As described 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 arranged parallel to each other and are spaced apart from each other in the lateral direction of the battery charger 2. The center-to-center distance between any two of the blade contacts is an integer multiple of 7mm so that the blade contacts C1-C4 can make contact with the female contact terminals P1-P4 of the battery pack.
The set of electrical contacts C1-C4 includes four blade contacts C1-C4, namely an outer first contact C1 serving as a negative contact for charging the battery pack 1, an adjacent second contact C2 serving as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2, an adjacent third contact C3 serving as a communication contact for transmitting communication signals between the battery pack 1 and the battery charger 2, and an adjacent fourth contact C4 serving as a positive contact for charging the battery pack 1. The set of electrical contacts further comprises a sensing contact C5 arranged in the same position as the outer first contact C1, wherein said first contact C1 and said sensing contact C5 share a common plane of extension, such that said outer first contact C1 and said sensing contact C5 are adapted to be short-circuited by a respective single contact P1 of the battery pack 1.
The sensing contact C5 is shorter than the first to fourth contacts C1-C4 so that when the battery pack 1 is inserted into the battery charger 2, the external first contact C1 and the sensing contact C5 short circuit after an electrical connection between the first to fourth contacts C1-C4 of the battery charger and the corresponding electrical contacts P1-P4 of the battery pack 1 has been established. The battery charger 2 comprises a detection circuit (not shown) adapted to determine whether the battery pack 1 is inserted into the battery charger 2 by detecting a short circuit of said first contact C1 and said detection contact C5.
The fitting recess 18 of the battery charger 2 has a third width W3 measured in the lateral direction. It comprises the pair of ribs 8 mentioned before at the opposite lateral sides 19 of the mating recess 18. The ribs 8 project towards each other in the transverse direction and extend along the insertion direction I. The ribs 8 are adapted to be received in the grooves 7 of the battery pack 1 in order to provide a form-locking engagement between the battery pack 1 and the battery charger 2 in a direction perpendicular to the insertion direction I. The distance between said ribs 8 measured in the transverse direction defines a fourth width W4 of the mating recess 18. In the illustrated embodiment, the third width W3 is 65.2mm, wherein the fourth width W4 is 55 mm. The distance Dr between the rib 8 and the bottom 20 of the mating recess 18 is 6.75mm (fig. 8). The maximum width Wr of the rib 8 may be in the range of 4mm to 6.5 mm.
A power tool 3 that can be powered by the battery pack 1 shown in fig. 1 to 6 is shown in fig. 10 to 13. It comprises a housing 22 equipped with a mating recess 18, whose general layout corresponds to the mating recess 18 of the battery charger 2 shown in fig. 7 to 9, with the following differences: the fourth blade contact T4 of the power tool 3 is adapted to be received within the fifth female terminal P5, rather than within the fourth female terminal P4 of the battery pack 1.
In some embodiments, the dimensions of the battery pack 1 and the battery charger 2 shown in fig. 1 to 9 also satisfy the following proportional relationship:
the ratio of the width of the slot 5 to D is between 0.2 and 0.6, preferably between 0.35 and 0.43, more preferably 0.389;
the ratio of W1 to D is between 9 and 9.3, preferably 9;
the ratio of W3 to D is between 9 and 9.43, preferably 9.31;
the ratio of D1 to D is between 12 and 12.3, preferably 12.23;
the ratio of D2 to D is between 12.2 and 12.6, preferably 12.33;
the ratio of Wg to D is between 0.85 and 1, preferably 0.929;
the ratio of Wr to D is between 0.57 and 0.929, preferably 0.75;
the ratio of WI to D is between 4.6 and 4.8, preferably 4.71;
WIr to D is greater than 4.7;
the ratio of W1 to W2 is between 1.1 and 1.25, preferably 1.19;
the ratio of W3 to W4 is between 1.125 and 1.245, preferably 1.19;
the ratio of Wg to Dg is between 0.909 and 1.061, preferably 0.985;
the ratio of Wr to Dr is between 0.571 and 0.985, preferably 0.778.
List of reference numerals
1 Battery pack
2 charger for battery
3 electric tool
4 casing of group battery
5 Slot in the housing of the Battery pack
6 fitting projection of battery pack
7 grooves in the mating projections
8 rib of matching notch
9 top side of the mating protrusion
10 front end of the mating projection
11 first axial stop
12 second axial stop
13 third axial stop
14 latch
15 engaging surface of latch
16 lateral sides of the mating projection
17 casing of battery charger
18 mating recess
19 lateral flanks of the mating recess
20 bottom of the fitting recess
21 locking notch
22 housing of electric tool
I direction of insertion
First electrical contact of P1 battery pack
Second electrical contact of P2 battery pack
Third electrical contact of P3 battery pack
Fourth electrical contact of P4 battery pack
Fifth electrical contact of P5 battery pack
First electrical contact of C1 battery charger
Second electrical contact of C2 battery charger
Third electrical contact of C3 battery charger
Fourth electrical contact of C4 battery charger
Fifth electrical contact of C5 battery charger
First electrical contact of T1 power tool
Second electrical contact of T2 power tool
Third electrical contact of T3 power tool
Fourth electrical contact of T4 power tool
W1 first width of mating projection
W2 second width of mating projection
W3 third Width of mating notch
Fourth width of W4 mating notch
Width of groove in Wg fitting projection
Width of rib of Wr fitting recess
Width of WI latch
WIr locking notch width
D center distance between adjacent electric contacts
Distance between D1 first axial stop and engagement surface
D2 distance between second axial stop and third axial stop
Distance between Dg groove and top side of mating protrusion
Distance between Dr Rib and bottom of mating notch

Claims (62)

1. A battery pack (1) having a pack housing, a mating side of which is adapted to mate with a mating side of a battery charger (2) or a power tool (3) by inserting the battery pack (1) into the battery charger (2) or the power tool (3) along an insertion direction (I), wherein a set of pack electrical contacts is arranged at the mating side of the battery pack, wherein the pack electrical contacts are configured as female contact terminals, wherein the pack electrical contacts are spaced apart from each other in a lateral direction of the battery pack, which lateral direction is perpendicular to the insertion direction, and wherein the pack electrical contacts are arranged parallel to each other, the pack electrical contacts are arranged within the pack housing of the battery pack (1), behind a slot (5) in the pack housing of the battery pack (1), characterized in that the ratio of the width of the slot (5) to the centre-to-centre distance (D) between adjacent battery electrical contacts is between 0.2 and 0.6.
2. Battery pack (1) according to claim 1, characterized in that the center-to-center distance between any two of the battery pack electrical contacts is an integer multiple of 7 mm.
3. Battery pack (1) according to claim 1, characterized in that the set of battery pack electrical contacts comprises five electrical contacts.
4. Battery pack (1) according to claim 3, characterized in that said set of battery pack electrical contacts comprises:
-an external first contact which serves as a negative contact for charging or discharging the battery (1),
-adjacent second contacts serving as communication contacts for transmitting communication signals between the battery pack (1) and the battery charger (2) or the power tool (3),
-adjacent third contacts serving as communication contacts for transmitting communication signals between the battery pack (1) and the battery charger (2) or the power tool (3),
-an adjacent fourth contact point serving as a positive contact point for charging or discharging the battery pack (1) with a small current, and
-an adjacent outer fifth contact which serves as a positive contact for charging or discharging the battery pack (1) at high currents.
5. Battery pack (1) according to claim 4, characterized in that said first and fifth contacts have larger dimensions than said second, third and fourth contacts in order to carry a larger maximum current.
6. Battery pack (1) according to claim 4, characterized in that the first contact is located in front of the second to fifth contacts, seen in the insertion direction (I), so that in the case of insertion of the battery pack (1) into the battery charger (2) or the power tool (3), the first contact of the battery pack (1) comes into contact with the corresponding contact of the charger (2) or the power tool (3) before the second to fifth contacts of the battery pack (1).
7. Battery pack (1) according to claim 2, characterized in that the centre-to-centre distance (D) between any two adjacent battery pack electrical contacts of the set of battery pack electrical contacts is 7 mm.
8. Battery pack (1) according to claim 1, characterized in that the width of the slot (5) is in the range of 2.5mm to 3.0 mm.
9. Battery pack (1) according to one of the claims 1 to 8, characterized in that the female contact terminal is adapted to receive a male blade contact of the battery charger (2) or the power tool (3).
10. Battery pack (1) according to one of claims 1 to 8, the battery pack (1) comprising a mating protrusion (6) at the mating side, wherein the mating protrusion (6) has a first width (W1) measured in a transverse direction perpendicular to the insertion direction (I), wherein the mating protrusion (6) comprises a pair of recesses (7) at its opposite transverse sides (16), the recesses (7) extending along the insertion direction (I) and being adapted to receive respective form-fitting elements of the battery charger (2) or the power tool (3) for providing a form-locking engagement between the battery pack (1) and the battery charger (2) or the power tool (3) in a direction perpendicular to the insertion direction (I) in case the battery pack (1) is inserted into the charger (2) or the power tool (3), and wherein the distance between the bottoms of the grooves (7) measured in the transverse direction defines a second width (W2) of the mating projection (6), characterized in that the first width (W1) is in the range of 63mm to 65mm, wherein the second width (W2) is in the range of 53mm to 55 mm.
11. Battery pack (1) according to claim 10, characterized in that the first width (W1) is 63mm, wherein the second width (W2) is 53 mm.
12. Battery pack (1) according to claim 10, characterized in that the width (Wg) of the groove (7) is in the range of 6 to 7 mm.
13. Battery pack (1) according to claim 12, characterized in that the width (Wg) of the groove (7) is 6.5 mm.
14. Battery pack (1) according to claim 10, characterized in that the distance between each groove (7) and the top side (9) of the mating protrusion (6) is 6.6 mm.
15. Battery pack (1) according to claim 10, characterized in that the set of battery pack electrical contacts is arranged at the front end (10) of the mating protrusion (6) and centrally with respect to the side (16) of the mating protrusion (6).
16. Battery pack (1) according to one of claims 1 to 8, wherein the battery pack (1) comprises a mating protrusion (6) at the mating side, wherein the mating protrusion (6) has a first axial stop (11) at its front end (10), the first axial stop (11) being adapted to mate with a second axial stop (12) of the battery charger (2) or the power tool (3) in order to determine an insertion position of the battery pack (1) and to prevent further movement of the battery pack (1) in the insertion direction (I) when the battery pack (1) is fully inserted into the battery charger (2) or the power tool (3), wherein the battery pack (1) further comprises a latch (14), an engagement surface (15) of the latch (14) being adapted to engage with a second axial stop of the battery charger (2) or the power tool (3) when the battery pack (1) is in the insertion position, wherein the battery pack (1) further comprises a latch (14), an engagement surface (15) of the latch (14) being adapted to engage with a second axial -a triaxial stop (13) engaging so as to prevent movement of the battery pack (1) opposite to the insertion direction (I), characterized in that the distance measured between the first axial stop (11) and the engagement surface (15) in the insertion direction (I) is in the range of 84 to 86 mm.
17. Battery pack (1) according to claim 16, characterized in that the distance between the first axial stop (11) and the engagement surface (15) measured in the insertion direction is 85.6 mm.
18. Battery pack (1) according to claim 16, characterized in that the Width (WI) of the latch (14) measured in a transverse direction perpendicular to the insertion direction (I) is 33 mm.
19. Battery pack (1) according to claim 1, characterized in that the battery pack (1) comprises mating protrusions (6) at the mating side, wherein the mating protrusions (6) have a first width (W1) measured in a transverse direction perpendicular to the insertion direction (I), the ratio of the first width (W1) to the center-to-center distance (D) being between 9-9.3.
20. Battery pack (1) according to claim 19, characterized in that the mating protrusion (6) comprises a pair of recesses (7) at its opposite lateral sides (16), said recess (7) extending along an insertion direction (I) and being adapted to receive a corresponding form-fitting element of the battery charger (2) or of the power tool (3), so that, in the event of insertion of the battery pack (1) into the charger (2) or the power tool (3), providing a form-locking engagement between the battery pack (1) and the battery charger (2) or the power tool (3) in a direction perpendicular to the insertion direction (I), and wherein the distance between the bottoms of said grooves (7) measured in the transverse direction defines a second width (W2) of the mating projection (6), a ratio of the first width (W1) to the second width (W2) is between 1.1-1.25.
21. Battery pack (1) according to claim 1, the battery pack (1) comprising a mating protrusion (6) at the mating side, wherein the mating protrusion (6) has a first axial stop (11) at its front end (10), the first axial stop (11) being adapted to mate with a second axial stop (12) of the battery charger (2) or the power tool (3) in order to determine an insertion position of the battery pack (1) and to prevent further movement of the battery pack (1) in the insertion direction (I) when the battery pack (1) is fully inserted in the battery charger (2) or the power tool (3), wherein the battery pack (1) further comprises a latch (14), an engagement surface (15) of the latch (14) being adapted to engage with a third axial stop (13) of the battery charger (2) or the power tool (3) when the battery pack (1) is in the insertion position Engage so as to prevent the battery pack (1) from moving counter to the insertion direction (I), characterized in that the ratio of the distance measured in the insertion direction (I) between the first axial stop (11) and the engagement surface (15) to the center distance (D) is between 12 and 12.3.
22. Battery pack (1) according to claim 20, characterized in that the ratio of the width (Wg) of the grooves (7) to the center-to-center distance (D) is between 0.85 and 1.
23. Battery pack (1) according to claim 21, characterized in that the ratio of the Width (WI) of the latches (14) to the center distance (D) is between 4.6 and 4.8.
24. Battery pack (1) according to claim 20, characterized in that the ratio of the width (Wg) of the grooves (7) to the distance between each groove (7) and the top side (9) of the mating protrusion (6) is between 0.909-1.061.
25. A battery charger (2) for a battery pack (1) according to one of claims 1 to 24, characterized in that the battery charger has a battery charger housing, the mating side of which is adapted to mate with the mating side of the battery pack (1) by inserting the battery pack (1) into the battery charger (2) in an insertion direction (I), wherein a set of battery charger electrical contacts is arranged at the mating side of the battery charger (2), wherein the battery charger electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced apart from each other in a transverse direction of the battery charger (2), which transverse direction is perpendicular to the insertion direction (I), and wherein the blade contacts are aligned parallel to each other.
26. The battery charger (2) of claim 25, wherein the center-to-center distance between any two of the blade contacts is an integer multiple of 7 mm.
27. Battery charger (2) according to claim 25, characterized in that the centre-to-centre distance (D) between any two adjacent blade contacts of the set of battery charger electrical contacts is 7 mm.
28. Battery charger (2) according to any of claims 25-27, characterized in that the set of battery charger electrical contacts comprises four blade contacts, which are equally spaced from each other by a center-to-center distance (D) of 7 mm.
29. The battery charger (2) of claim 28, wherein said set of battery charger electrical contacts comprises:
-a first contact of an external battery charger serving as a negative contact for charging the battery pack (1),
-a second contact of an adjacent battery charger serving as a communication contact for transmitting communication signals between the battery pack (1) and the battery charger (2),
-a third contact of an adjacent battery charger serving as a communication contact for transmitting communication signals between the battery pack (1) and the battery charger (2), and
-a fourth contact of an adjacent battery charger, which serves as a positive contact for charging the battery pack (1).
30. Battery charger (2) according to claim 29, characterized in that said set of battery charger electrical contacts further comprises a battery charger detection contact arranged in the same position as the battery charger first contact, wherein the battery charger first contact and the battery charger detection contact share a common plane of extension, such that the battery charger first contact and the battery charger detection contact are adapted to be short-circuited by a respective single contact of the battery pack (1).
31. Battery charger (2) according to claim 30, characterized in that the detection contact of the battery charger is shorter than the first to fourth contact of the battery charger, so that when a battery pack (1) is inserted into the battery charger (2), the external first contact of the battery charger and the detection contact of the battery charger are short-circuited after an electrical connection is established between the first to fourth contact of the battery charger and the corresponding electrical contact of the battery pack (1).
32. Battery charger (2) according to claim 30, characterized in that the battery charger (2) comprises a detection circuit adapted to determine whether a battery pack (1) is inserted into the battery charger (2) by detecting whether the first contact of the battery charger and the detection contact of the battery charger are short-circuited.
33. Battery charger (2) according to one of the claims 25 to 27, characterized in that the male blade contacts of the battery charger (2) are adapted to be received in the female contact terminals of the battery pack (1).
34. The battery charger (2) of claim 30, a set of electrical battery charger electrical contacts being arranged at the mating side of the battery charger (2), wherein a lateral direction of the battery charger (2) is defined perpendicular to the insertion direction (I), wherein the battery charger (2) comprises a mating recess (18) at the mating side, wherein the mating recess (18) has a third width (W3) measured in the lateral direction, wherein the mating recess (18) comprises a pair of ribs (8) at opposite lateral sides (19) of the mating recess (18), wherein the ribs (8) protrude towards each other in the lateral direction and extend along the insertion direction (I), and wherein the ribs (8) are adapted to be received in respective grooves (7) of the battery pack (1) for, in case the battery pack (1) is inserted into the battery charger (2), -providing a form-locking engagement between the battery pack (1) and the battery charger (2) in a direction perpendicular to the insertion direction (I), and wherein the distance between the ribs measured in the transverse direction defines a fourth width (W4) of the mating recess (18), characterized in that the third width (W3) is in the range of 63mm to 66mm, wherein the fourth width (W4) is in the range of 53mm to 56 mm.
35. The battery charger (2) of claim 34, wherein the third width (W3) is 65.2mm, wherein the fourth width (W4) is 55 mm.
36. Battery charger (2) according to claim 34, characterized in that the distance between the rib (8) and the bottom (20) of the mating recess (18) is in the range of 6.6mm to 7.0 mm.
37. Battery charger (2) according to claim 36, characterized in that the distance between the rib (8) and the bottom (20) of the mating recess (18) is 6.75 mm.
38. The battery charger (2) of claim 34, wherein the rib (8) has a rib width (Wr) in the range of 4mm to 6.5 mm.
39. Battery charger (2) according to claim 30, a set of battery charger electrical contacts being arranged at a mating side of the battery charger (2), wherein a lateral direction of the battery charger (2) is defined perpendicular to the insertion direction (I), wherein the battery charger (2) comprises a second axial stop (12) adapted to cooperate with a first axial stop (11) of the battery pack (1) in order to determine an insertion position of the battery pack (1) and to prevent further movement of the battery pack (1) in the insertion direction when the battery pack (1) is fully inserted in the battery charger (2), wherein the battery charger (2) further comprises a third axial stop (13), the third axial stop (13) being adapted to be engaged by a latch (14) of the battery pack (1) when the battery pack (1) is in the insertion position, to prevent the battery pack (1) from moving counter to the insertion direction (I), characterized in that the distance between the second axial stop (12) and the third axial stop (13), measured in the insertion direction (I), is in the range of 85.6mm to 88 mm.
40. Battery charger (2) according to claim 39, characterized in that said distance between said second axial stop (12) and said third axial stop (13) measured in said insertion direction (I) is 86.29 mm.
41. Battery charger (2) according to claim 39, characterized in that said third axial stop (13) is formed by a wall of a locking recess (21) in said battery charger (2).
42. Battery charger (2) according to claim 41, characterized in that the width of the locking notch (21) measured in the transverse direction is at least 33 mm.
43. Battery charger (2) according to claim 30, characterized in that a set of battery charger electrical contacts is arranged at the mating side of the battery charger (2), wherein a lateral direction of the battery charger (2) is defined perpendicular to the insertion direction (I), wherein the battery charger (2) comprises a mating notch (18) at the mating side, wherein the mating notch (18) has a third width (W3) measured in the lateral direction, the ratio of the third width (W3) to the center-to-center distance (D) being between 9-9.43.
44. The battery charger (2) of claim 43, the mating recess (18) comprising a pair of ribs (8) on opposite lateral sides (19) of the mating recess (18), wherein the ribs (8) project in a transverse direction towards one another and extend in the insertion direction (I), and wherein the ribs (8) are adapted to be received in corresponding grooves (7) of the battery pack (1), so that, in the event of insertion of the battery pack (1) into the battery charger (2), providing a form-locking engagement between the battery pack (1) and the battery charger (2) in a direction perpendicular to the insertion direction (I), and wherein the distance between the ribs measured in the transverse direction defines a fourth width (W4) of the mating notch (18), a ratio of the third width (W3) to the fourth width (W4) is between 1.125-1.245.
45. Battery charger (2) according to claim 43, characterized in that said battery charger (2) comprises a second axial stop (12) adapted to cooperate with a first axial stop (11) of said battery pack (1) so as to determine an insertion position of said battery pack (1) and to prevent further movement of said battery pack (1) in an insertion direction when said battery pack (1) is fully inserted in said battery charger (2), wherein said battery charger (2) further comprises a third axial stop (13), said third axial stop (13) being adapted to be engaged by a latch (14) of said battery pack (1) when said battery pack (1) is in said insertion position so as to prevent movement of said battery pack (1) opposite to said insertion direction (I), the distance between said second axial stop (12) and said third axial stop (13) measured in said insertion direction (I) being equal to said distance between said second axial stop (12) and said third axial stop (13) measured in said insertion direction (I) The ratio of the heart distance (D) is between 12.2 and 12.6.
46. Battery charger (2) according to claim 25, characterized in that the ratio of the width of the locking recess (21) of the battery charger (2) measured in the transverse direction to the center distance (D) is larger than 4.7.
47. The battery charger (2) according to claim 44, characterized in that the ratio of the rib width (Wr) of the ribs (8) to the center-to-center distance (D) is between 0.57 and 0.929.
48. The battery charger (2) according to claim 44, wherein the ratio of the rib width (Wr) of the rib (8) to the distance between the rib (8) and the bottom (20) of the mating recess (18) is between 0.571-0.985.
49. Power tool (3) for a battery pack (1) according to one of claims 1 to 24, the power tool (3) having a power tool housing with a mating side adapted to mate with a mating side of the battery pack (1) by inserting the battery pack (1) into the power tool (3) in an insertion direction (I), wherein a set of power tool electrical contacts is arranged on a mating side of a power tool (3), wherein the power tool electrical contacts are configured as male blade contacts, wherein the blade contacts are spaced apart from each other in a transverse direction of the power tool (3), which is perpendicular to the insertion direction (I) and in which the blade contacts are arranged parallel to one another, the blade is characterized in that the center distance between any two of the blade contacts is integral multiple of 7 mm.
50. A power tool (3) according to claim 49, characterized in that the centre-to-centre distance (D) between at least two adjacent blade contacts of the set of power tool electrical contacts is 7 mm.
51. The power tool (3) of claim 49 wherein the set of power tool electrical contacts includes four blade contacts, wherein three of the four blade contacts are equally spaced from each other by a center-to-center distance of 7mm, wherein a fourth of the four blade contacts is spaced from an adjacent blade contact by a center-to-center distance of 14 mm.
52. The power tool (3) of claim 51, wherein the set of power tool electrical contacts comprises:
-a first contact of an external power tool, which serves as a negative contact for discharging the battery pack (1) and supplying power to the power tool (3),
-a second contact of an adjacent power tool, which serves as a communication contact for transmitting communication signals between the battery pack (1) and the power tool (3),
-a third contact of an adjacent power tool, which serves as a communication contact for transmitting communication signals between the battery pack (1) and the power tool (3), and
-a fourth contact of an adjacent power tool, which serves as a positive contact for discharging the battery pack (1) and powering the power tool (3).
53. The power tool (3) according to one of the claims 49 to 52, characterized in that the male blade contact of the power tool (3) is adapted to be received in a female contact terminal of the battery pack (1).
54. The power tool (3) according to one of claims 49 to 52, wherein a transverse direction of the power tool (3) is defined perpendicular to the insertion direction (I), wherein the power tool (3) comprises a mating recess (18) at the mating side, wherein the mating recess (18) has a third width (W3) measured in the transverse direction, wherein the mating recess (18) comprises a pair of ribs (8) at opposite transverse sides (19) of the mating recess (18), wherein the ribs (8) protrude towards each other in the transverse direction and extend along the insertion direction (I), and wherein the ribs (8) are adapted to be received in corresponding grooves (7) of the battery pack (1) in order to, in case the battery pack (1) is inserted into the power tool (3), -providing a form-locking engagement between the battery pack (1) and the power tool (3) in a direction perpendicular to the insertion direction (I), and wherein a distance between the ribs (8) measured in the transverse direction defines a fourth width (W4) of the mating recess (18), characterized in that the third width (W3) is in the range of 63mm to 66mm, wherein the fourth width (W4) is in the range of 53mm to 56 mm.
55. The power tool (3) according to claim 54, wherein the third width (W3) is 65.2mm, wherein the fourth width (W4) is 55 mm.
56. The power tool (3) according to claim 54, characterized in that the distance between the rib (8) and the bottom (20) of the mating recess (18) is in the range of 6.6mm to 7.0 mm.
57. The power tool (3) according to claim 56, wherein the distance between the rib (8) and the bottom (20) of the mating recess (18) is 6.75 mm.
58. The power tool (3) according to claim 54, characterized in that the rib width (Wr) of the rib (8) is in the range of 4mm to 6.5 mm.
59. Power tool (3) according to one of claims 49 to 52, the transverse direction of the power tool (3) being defined perpendicular to the insertion direction (I), wherein the power tool (3) comprises a second axial stop (12) adapted to cooperate with a first axial stop (11) of the battery pack (1) to determine an insertion position of the battery pack (1) and to prevent further movement of the battery pack (1) in the insertion direction (I) when the battery pack (1) is fully inserted in the power tool (3), wherein the power tool (3) further comprises a third axial stop (13) adapted to be engaged by a latch (14) of the battery pack (1) when the battery pack (1) is in the insertion position to prevent movement of the battery pack (1) opposite to the insertion direction (I), characterized in that the distance between the second axial stop (12) and the third axial stop (13), measured in the insertion direction (I), is in the range of 85.6mm to 88 mm.
60. The power tool (3) according to claim 59, characterized in that the distance between the second axial stop (12) and the third axial stop (13) measured in the insertion direction (I) is 86.29 mm.
61. A power tool (3) according to claim 59, characterized in that the third axial stop (13) is formed by a wall of a locking recess (21) in the power tool (3).
62. The power tool (3) according to claim 61, wherein the width of the locking notch (21) in the transverse direction is at least 33 mm.
CN202020249903.4U 2019-09-05 2020-03-04 Battery pack, charger for battery pack and electric tool for battery pack Active CN211654902U (en)

Applications Claiming Priority (6)

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

Publications (1)

Publication Number Publication Date
CN211654902U true CN211654902U (en) 2020-10-09

Family

ID=70058052

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020249903.4U Active CN211654902U (en) 2019-09-05 2020-03-04 Battery pack, charger for battery pack and electric tool for battery pack

Country Status (4)

Country Link
CN (1) CN211654902U (en)
AU (2) AU2020100321A4 (en)
DE (1) DE202020101193U1 (en)
FR (1) FR3100662B3 (en)

Also Published As

Publication number Publication date
DE202020101193U1 (en) 2020-07-22
FR3100662A3 (en) 2021-03-12
AU2020201614A1 (en) 2021-03-25
FR3100662B3 (en) 2021-08-13
AU2020100321A4 (en) 2020-04-09

Similar Documents

Publication Publication Date Title
EP0743689B1 (en) Battery cartridge having a recess for detecting misuse and/or recessed terminals
JP3061097B2 (en) Battery electrical connector
US5496657A (en) Modular battery system comprising individual interconnected modules
KR101201748B1 (en) Battery modual
US5378552A (en) Modular battery system comprising individual interconnected modules
EP1702389B1 (en) Electrical power contacts and connectors comprising same
EP2079145B1 (en) Charger for battery packs and combination of battery packs and a charger
US10998573B2 (en) Lithium battery package
TW201611389A (en) Battery connection method and apparatus
EP2246920B1 (en) Battery device and electronic apparatus
EP1699095B1 (en) Battery device and electronic apparatus
EP2565961A1 (en) Battery coupling arrangement
KR20170050511A (en) Battery module and battery pack including the same
EP1573864A1 (en) Finger proof power connector
KR20170050508A (en) Battery module and battery pack including the same
US20230369818A1 (en) Energy storage connector
KR100807412B1 (en) Power supply device for a portable apparatus, suitable for using different types of power supply
CN115843402A (en) Position assurance device, connector assembly, battery and power consumption device
CN211654902U (en) Battery pack, charger for battery pack and electric tool for battery pack
KR20160139807A (en) Battery pack
EP2453503A1 (en) Battery system
CN114258616B (en) Connector module, battery pack including the same, vehicle, and connector assembly
WO2020066905A1 (en) Battery pack, electrical device, and electrical device system
KR20170141370A (en) Battery Module
CN216720439U (en) Misplug-proof electric connector device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant