Charger for use with battery pack

Abstract

A charger for use with a battery pack includes a charging compartment defining a battery path and a lock including a member telescopically extending into the charging compartment transverse to the battery path, the member positioned to overlap a latch in the battery path regardless of a position of the latch laterally in the path direction.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 648,324, filed May 16, 2024, and U.S. Provisional Application No. 63 / 579,569, filed August 30, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The utility model relates to a battery pack and a charger for charging the battery pack. Background Art

[0004] A typical battery charger includes a battery charging circuit that is connectable to a power source and a battery pack to charge the battery. Utility Model Content

[0005] In an independent aspect, the present invention provides a charger for use with a battery pack having a latch, the charger comprising a charging compartment and a lock. The charging compartment defines a battery path. The lock comprises a member that telescopically extends into the charging compartment transverse to the battery path. The member is positioned to overlap the latch in the battery path, regardless of the position of the latch to the side of the battery path.

[0006] In some embodiments, the lock includes a user interface, and actuating the user interface causes the member to extend into the charging bay.

[0007] In some embodiments, the user interface is biased by a spring force toward an unlocked position in which the member does not extend into the charging bay.

[0008] In some embodiments, the charger further includes a stop member configured to prevent the user interface from automatically moving to the unlocked position.

[0009] In some embodiments, the stop member pivots about a hinge and a lock hole through which a lock protrusion extends, the lock protrusion being configured to receive a padlock.

[0010] In another independent aspect, the present invention provides a charger for use with a battery pack having a latch, the charger comprising a charging compartment and a lock. The charging compartment defines a battery path. The lock comprises a member extending along the battery path. The member is freely movable in a first direction toward the charging compartment, such that the member can be positioned to obstruct access to a user engagement portion of the latch. The first direction extends transversely to the battery path. Once the lock is disengaged, the member is selectively movable in a second direction, the second direction extending in a direction opposite to the first direction.

[0011] In another independent aspect, the present invention provides a charger for use with a battery pack, the charger comprising a charging compartment and a lock. The charging compartment defines a battery path. The lock includes a member extending in a locking direction transverse to the battery path. The member is movable in the locking direction toward the charging compartment and can be positioned to overlap the battery path. The member is selectively movable in an unlocking direction extending in a direction opposite to the locking direction.

[0012] Other independent aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of a charger according to a first configuration.

[0014] Figure 2 yes Figure 1 Another perspective image of the charger.

[0015] Figure 3 yes Figure 1 A three-dimensional image of the charging compartment.

[0016] Figure 4 yes Figure 1 Another three-dimensional image of the charging case.

[0017] Figure 5 is a perspective view of a charger according to a second configuration.

[0018] Figure 6 yes Figure 5 A perspective view of the interior of the charger.

[0019] Figure 7 yes Figure 5 A perspective view of a charger lock.

[0020] Figure 8 is a perspective view of a charger according to a third configuration.

[0021] Figure 9 yes Figure 8 Side view of the charger's lock.

[0022] Figure 10 is a perspective view of a charger according to a fourth configuration.

[0023] Figure 11 yes Figure 10 Side view of the charger's lock.

[0024] Figure 12 yes Figure 10 A cutaway view of the charger's lock.

[0025] Figure 13is a perspective view of a first type of battery pack.

[0026] Figure 14A is a rear perspective view of a second type of battery pack.

[0027] Figure 14B yes Figure 14A A front perspective view of a battery pack.

[0028] Figure 15 yes Figures 14A-14B The battery pack along Figure 14A A cross-sectional view along line 15-15 in FIG.

[0029] Figure 16A is a perspective view of the charger in a locked position according to a fifth configuration.

[0030] Figure 16B It is in the unlocked position Figure 16A Another perspective image of the charger.

[0031] Figure 17A It is in the unlocked position Figure 16A Side view of a first embodiment of a charger lock.

[0032] Figure 17B is in the locked position Figure 16A Side view of a first embodiment of the lock.

[0033] Figure 18A It is in the unlocked position Figure 16A Side view of a second embodiment of a charger lock.

[0034] Figure 18B It is in the unlocked position Figure 16A Another side view of a second embodiment of the lock.

[0035] Figure 19 yes Figure 16A A perspective view of the interior of the charger lock.

[0036] Figure 20A is in the locked position Figure 16A A three-dimensional image of the secondary charging compartment.

[0037] Figure 20B It is in the unlocked position Figure 16A Another three-dimensional image of the secondary charging compartment.

[0038] Figure 21A is in the locked position Figure 16A A three-dimensional image of the charging compartment.

[0039] Figure 21B It is in the unlocked position Figure 16AAnother three-dimensional image of the charging case.

[0040] Figure 22A is a perspective view of the charger in a locked position according to a sixth configuration.

[0041] Figure 22B It is in the unlocked position Figure 22A Another perspective image of the charger.

[0042] Figure 23 is a detailed illustration of a remote device for use with the charger and battery pack.

[0043] Figure 24 is a flow chart of a method of operation for locking a battery pack to a battery charger.

[0044] Figure 25 yes Figure 24 A continuation of the flowchart of the method of operation for locking a battery pack to a battery charger.

[0045] Figure 26 yes Figure 24 A continuation of the flowchart of the method of operation for locking a battery pack to a battery charger.

[0046] Figure 27 is a side view of a lock of a charger according to a seventh configuration. DETAILED DESCRIPTION

[0047] Before explaining any independent configuration of the present invention in detail, it should be understood that the present invention is not limited to the application of the details of the construction and arrangement of the components described in the following description or shown in the following drawings. The present invention can have other independent configurations and can be implemented or realized in various ways.

[0048] Figure 1-4 A charging system according to a first configuration is shown and includes a battery charger 10 operable to charge battery packs 14A, 14B ( Figure 13-15 ) is charged. In the illustrated configuration, the battery charger 10 is operable to charge a first battery pack 14A of a first type ( Figure 13 ) and a second type of second battery pack 14B ( Figure 14A 、 Figure 14B and Figure 15 The illustrated battery charger 10 may be operable to charge a high-output battery pack (e.g., having a current capacity of 12 ampere-hours (Ah) or greater) in about 60 minutes, which requires about three times the power of a conventional charger.

[0049] See also Figure 13-15The battery pack type can be defined by the nominal voltage, current capacity, connection configuration (e.g., "tower" vs. "slide"), etc. of the battery packs 14A, 14B. For example, the first battery pack 14A may include a high-power battery pack having a nominal voltage of approximately 12 volts (V) and a tower configuration, while the second battery pack 14B may include a high-power battery pack having a nominal voltage of 18 V and a slide configuration. In other configurations, the battery packs 14A, 14B may be the same type of battery pack.

[0050] like Figure 14A 、 Figure 14B and Figure 15 As shown, the battery pack 14B may include a battery pack housing 30 including a longitudinal axis A, a first (e.g., top) portion 34, and a second (e.g., bottom) portion 38 coupled to the first portion 34. The housing 30 encloses a plurality of battery cells 42, which are secured to the battery pack by battery holders 46 ( Figure 15 ) is secured to the interior of the housing. The housing 30 also encloses the battery pack circuitry (not shown). The first portion 34 is symmetrical about the longitudinal axis A, engageable with the charger 18, and includes a wall 50 and a battery pack interface 54 extending from the wall 50. The battery pack interface 54 includes a terminal block 58 having an opening 62 extending therethrough that allows access to the battery pack terminals (not shown) located within the housing 30. On either side of the battery pack interface 54 are rails 66, 70 and recesses 74, 78 defined between the respective rails 66, 70 and the wall 50. The battery pack 14B further includes a latch mechanism 90 that includes a user-engaging portion 94 and a latch 98. In the illustrated construction, there are two latch mechanisms 90 on opposite sides of the first portion 34, but in other constructions, there may be only a single latch 99. The second portion 38 includes a plurality of apertures (not shown) that allow communication between the interior of the battery pack 14B and the exterior of the battery pack 14B. Each battery pack 14A, 14B has a standardized latch geometry. In other embodiments (see FIG. 22 ), the battery packs 14A, 14B may not have latches 98. As an alternative, the charger 18 may include latches 98.

[0051] Each battery pack 14A, 14B can be connected to and operated to power various power tools (e.g., chop saws, miter saws, table saws, core drills, augers, breakers, demolition hammers, compactors, vibrators, compressors, drain cleaners, welders, cable pullers, pumps, etc.), outdoor tools (e.g., chainsaws, rope trimmers, hedge trimmers, blowers, lawn mowers, etc.), other powered devices (e.g., vehicles, utility carts, material handling carts, etc.), and non-powered electrical devices (e.g., power supplies, lights, AC / DC adapters, generators, etc.).

[0052] See also Figure 1-2 The charger 10 has a charger housing 100 that includes a front wall 112, a rear wall 114, a top wall 118, a bottom wall 122, a first side wall 126, and a second side wall 130. The front wall 112 and the rear wall 114 each include a plurality of charging bays 132 configured to receive the battery packs 14A and 14B. The charging bays 132 define a battery insertion direction 133, which may also be referred to as a battery path. The first side wall 126 and the second side wall 130 are spaced apart from each other, and a transverse axis B of the charger housing 100 is defined therebetween. The bottom wall 122, the first side wall 126, and the second side wall 130 are supported by a support structure 134. The support structure 134 includes a bottom support portion 138 extending along the transverse axis B. The support structure 134 also includes a first side support section 142 and a second side support section 146 that support the first side wall 126 and the second side wall 130, respectively. The first and second side support sections 142, 146 are both generally rectangular in shape and include a plurality of support feet 150. Each of the first and second side support sections 142, 146 further includes a handle portion 154 configured to allow a user to carry the charger 10. In this embodiment, the charger housing 100 is made of a plastic material, and the support structure 134 is made of a metal material. In other embodiments, the charger housing 100 and the support structure 134 may be made of a variety of different materials (steel, aluminum, plastic, etc.). In some embodiments, the charger 10 may not be supported by the support structure 134, and the support structure 134 may be omitted. The charger housing 100 supports and partially houses a lock 158. The lock 158 includes a plurality of members 162 and a user interface 166. Each member 162 is telescopically extendable into the charging bay 132. In this embodiment, the charger 10 includes a plurality of members 162 and a charging bay 132. In other embodiments, the charger 10 may have only a single member 162 and a single charging bay 132. In this embodiment, the lock 158 further includes a padlock 175. In alternative embodiments, the lock 158 may be any type of lock that includes a shackle.

[0053] Continue to see Figure 1 and Figure 2, top wall 118 includes a locking slot 170 extending along transverse axis B. User interface 166 protrudes from charger housing 100 through locking slot 170. Locking slot 170 is configured to allow user interface 166 to slide between a locked position and an unlocked position. User interface 166 includes a first aperture 171 that allows insertion of a padlock 175. Charger housing 100 includes a locking protrusion 178 extending transverse to the plane of top wall 118 and laterally to battery insertion direction 133. Locking protrusion 178 includes a second aperture 182 that allows insertion of padlock 175. User interface 166 is positionable so that a user can slide user interface 166 into a locked position, with first aperture 171 and second aperture 182 aligned and member 162 extending into charging bay 132. In this position, the user can insert and lock padlock 175, preventing user interface 166 from sliding into an unlocked position where first aperture 171 and second aperture 182 are no longer aligned.

[0054] See also Figure 3 and Figure 4 , the charging bay 132 is configured to receive the battery packs 14A, 14B. The charging bay 132 may include a plurality of rails and grooves 184 configured to correspond to the rails 66, 70 and grooves 74, 78 of the battery packs 14A, 14B. The charging bay 132 includes a notch 186 defined therein that is configured to receive the latch 98. The notch 186 is configured to resist removal of the battery packs 14A, 14B unless the user engagement portion 94 is depressed. Actuating the user interface 166 to the locked position extends the member 162 into the charging bay 132. In the locked position, the member 162 extends transverse to the battery insertion direction 133 and is positioned to overlap the latch 98 in the battery insertion direction 133, regardless of the position of the latch 98 to the side of the battery insertion direction (i.e., when the user engages the portion 94). When the lock 158 is in the unlocked position and the user presses the user engagement portion 94, the battery packs 14A, 14B can be removed from the charging bay 132. When the lock 158 is in the locked position and the user presses the user engagement portion 94, the members 162 abut the latches 98 of the battery packs 14A, 14B and prevent the battery packs 14A, 14B from being removed from the charging bay 132. In this embodiment, when the lock 158 is in the locked position, all of the members 162 extend into their respective charging bays 132, preventing any inserted battery packs 14A, 14B from being removed. In alternative embodiments, the individual battery packs 14A, 14B can be locked and unlocked independently. In some embodiments, the members 162 can be spring-loaded or spring-biased.

[0055] Figure 5-7 FIG. 1 shows a charger according to another embodiment of the present invention. The charger 110 is similar to Figure 1Therefore, like features are identified with like reference numerals incremented by "100," and only the differences between the two will be discussed.

[0056] See also Figure 5 The charger 110 includes a charger housing 200, which includes a bottom 205 and a top 207. The bottom 205 is in the shape of a trapezoidal prism and includes a front wall 212 and a rear wall 214. The top 205 is in the shape of a rectangular prism. The charger housing 200 further includes a first side wall 226 and a second side wall 230. The front wall 212 and the rear wall 214 each include a plurality of charging bays 232, each configured to receive a battery pack 14A or 14B. The charging bays 232 define a battery insertion direction 233, which may also be referred to as a battery path. The charger housing 200 supports and partially accommodates a plurality of locks 258 corresponding to each charging bay 232. In alternative embodiments, the charger housing 200 may include only one lock 258 and one charging bay 232. Each lock 258 includes a generally L-shaped member 262. In other embodiments, the member 262 may have a different shape. Member 262 includes a first portion 263 extending along the battery insertion direction 233 and a second portion 264 extending transverse to the battery insertion direction 233. First portion 263 protrudes from charger housing 200 and extends from bottom 205 through locking slot 270. Locking slot 270 is configured such that member 262 can slide toward battery packs 14A, 14B in a first direction 275, or locking direction, and away from battery packs 14A, 14B in a second direction 279, or unlocking direction. First direction 275 extends transverse to battery insertion direction 233. Second direction 279 extends opposite first direction 275. In some embodiments, first direction 275 and second direction 279 can be linear directions.

[0057] See also Figure 6 and Figure 7 , the charging bay 232 is configured to receive the battery packs 14A, 14B. The charging bay 232 may include a plurality of rails and grooves 284 configured to correspond to the rails 66, 70 and grooves 74, 78 of the battery packs 14A, 14B. The charging bay 232 includes a notch 286 defined therein that is configured to receive the latch 98. The notch 286 is configured to resist removal of the battery packs 14A, 14B unless the user engaging portion 94 is depressed. Actuating the first portion 263 in the first direction 275 extends the member 262 toward the charging bay 232, hindering a user's access to the user engaging portion 94 (i.e., the user cannot press the user engaging portion to release the latch 98 from the notch 286).

[0058] In this embodiment, lock 258 includes a ratchet mechanism 290. Ratchet mechanism 290 includes a second portion 264 and a pawl 294. Second portion 264 includes a plurality of teeth 298 that engage with pawl 294. Teeth 298 are angled to correspond to the angle of pawl 294. The engagement of teeth 298 and pawl 294 allows member 262 to freely move in a first direction 275 within locking slot 270 and selectively move in a second direction 279 once lock 258 is disengaged. When lock 258 is engaged, pawl 294 engages teeth 298, causing member 262 to resist movement in second direction 279. Pawl 294 can disengage from teeth 298 in a plurality of ways. Pawl 294 can be rotated clockwise to disengage from teeth 298. In alternative embodiments, the pawl 294 can be axially translated along or transverse to the battery insertion direction 233 to disengage from the teeth 298. The charger housing 200 can also include a button or user-engaged portion to disengage the pawl 294 from the teeth 298. In this embodiment, each charging bay 232 includes a separate lock 258 and a corresponding ratchet mechanism 290. Each pawl 294 can be disengaged individually or all at once.

[0059] Figure 8 and Figure 9 FIG. 2 shows a charger according to another embodiment of the present invention. The charger 210 is similar to Figure 5 Therefore, like features are identified with like reference numerals plus "100," and only the differences between the two will be discussed.

[0060] See also Figure 8The charger 210 includes a charger housing 300, which includes a bottom 305 and a top 307. The bottom 305 includes a front wall 312 and a rear wall 314. The charger housing 300 further includes a first side wall 326 and a second side wall 330. The first side wall 326 and the second side wall 330 are spaced apart from each other, and a transverse axis C of the charger housing 300 is defined therebetween. The front wall 312 and the rear wall 314 each include a plurality of charging bays 332, each configured to receive a battery pack 14A or 14B. The charging bays 332 define a battery insertion direction 333, which may also be referred to as a battery path. The charger housing 300 supports and partially houses a plurality of locks 358 corresponding to each charging bay 332. In an alternative embodiment, the charger 210 may include only one lock 358 and one charging bay 332. The lock 358 includes a member 362 extending from the top 307 through a locking slot 370. Member 362 extends transverse to battery insertion direction 333. Locking slot 370 is configured such that the user interface can be moved in a first direction 375, or locking direction, toward charging bay 332 and in a second direction 379, or unlocking direction, away from charging bay 332. First direction 375 extends transverse to battery insertion direction 333. Second direction 379 extends opposite first direction 375.

[0061] See also Figure 8 and Figure 9 , the charging bay 332 is configured to receive the battery packs 14A, 14B. The charging bay 332 may include a plurality of rails and grooves configured to correspond to the rails 66, 70 and grooves 74, 78 of the battery packs 14A, 14B. The charging bay 332 includes a notch 386 defined therein that is configured to receive the latch 98. The notch 386 is configured to resist removal of the battery packs 14A, 14B unless the user engagement portion 94 is depressed. Actuating the member 362 in the first direction 375 extends the member 362 toward the charging bay 332, obstructing the battery removal path 388 (i.e., the user cannot remove the battery pack 14A, 14B along the battery insertion direction 333 because the member 362 blocks the path 388).

[0062] In this embodiment, the lock 358 is a thin rod and includes a ratchet mechanism 390. In this embodiment, each charging compartment 332 includes a separate lock 358 and a corresponding ratchet mechanism 390. The ratchet mechanism 390 includes a member support portion 392 and a pawl 394. The member support portion 392 includes a plurality of teeth 398 that engage with the pawl 394. The member support portion 392 supports the member 362 and is configured to rotate about a member axis 397. The member axis 397 is positioned along the transverse axis C and is transverse to the battery insertion direction 333. In alternative embodiments, the member support portion 392 can be a plurality of different shapes. The teeth 398 are angled to correspond to the angle of the pawl 394. The teeth 398 and the pawl 394 engage so that the member 362 can move freely in the first direction 375 within the locking slot 370, and once the lock 358 is disengaged, the member can selectively move in the second direction 379. When the lock 358 is engaged, the pawl 394 engages the teeth 398, causing the member 362 to resist movement in the second direction 379. The pawl 394 can be actuated by the user and disengaged from the teeth 398 in a variety of ways. In this embodiment, the charger housing 300 includes a button 399 to disengage the pawl 394 from the teeth 398. The button 399 is connected to the pawl 394 so that the pawl 394 is cantilevered from the button 399. When the user presses the button 399, the button 399 biases the pawl 394 to disengage from the teeth 398 on the member support portion 392. Each pawl 394 can be disengaged individually or all at once.

[0063] Figure 10-12 FIG. 3 shows a charger according to another embodiment of the present invention. The charger 310 is similar to Figure 8 The charger 210 shown in and described above is shown in FIG. Therefore, like features are identified with like reference numerals plus "100," and only the differences between the two will be discussed.

[0064] See also Figure 10The charger 310 has a charger housing 400 including a bottom 405 and a top 407. The bottom 405 includes a front wall 412 and a rear wall 414. The charger housing 400 further includes a first side wall 426 and a second side wall 430. The first side wall 426 and the second side wall 430 are spaced apart from each other. The front wall 412 and the rear wall 414 each include a plurality of charging bays 432, each of which is configured to receive a battery pack 14A, 14B. The charging bays 432 define a battery insertion direction 433. The battery insertion direction 433 may also be referred to as a battery path. The charger housing 400 supports and partially accommodates a plurality of locks 458 corresponding to each charging bay 432. The locks 458 include a member (e.g., a wedge) 462 extending from the top 407 through a locking slot 470. The member 462 extends transverse to the battery insertion direction 433. The locking slot 370 is configured such that the user interface can be moved toward the battery pack 14A, 14B in a first direction 475 or locking direction and away from the battery pack 14A, 14B in a second direction 479 or unlocking direction. The first direction 475 extends transversely to the battery insertion direction 433. The second direction 479 extends opposite to the first direction 475.

[0065] See also Figure 10 and Figure 11 , the charging bay 432 is configured to receive the battery packs 14A, 14B. The charging bay 432 may include a plurality of rails and grooves 484, which are configured to correspond to the rails 66, 70 and grooves 74, 78 of the battery packs 14A, 14B. The charging bay 432 includes a recess 486 defined therein, which is configured to receive the latch 98. The recess 486 is configured to resist removal of the battery packs 14A, 14B unless the user engagement portion 94 is depressed. In this embodiment, the member 462 is a wedge that includes a handle 487. The handle 487 is configured to be engaged by a user to slide the wedge 462 in the first direction 475 and the second direction 479. Actuating the wedge 462 in the first direction 475 extends the wedge 462 toward the charging bay 432, obstructing the battery removal path 488 (i.e., the user cannot remove the battery packs 14A, 14B along the battery insertion direction 433 because the wedge 462 blocks the path 488).

[0066] In this embodiment, lock 458 includes a ratchet mechanism 490. Ratchet mechanism 490 includes a pawl 494. Member 462 includes a plurality of teeth 498 that engage with pawl 494. Teeth 498 are angled to correspond to the angle of pawl 494. The engagement of teeth 498 and pawl 494 allows member 462 to freely move in a first direction 475 within locking slot 470 and selectively move in a second direction 479 once lock 458 is disengaged. When lock 458 is engaged, pawl 494 engages teeth 498, resisting movement of member 462 in second direction 479. The engagement of pawl 494 and teeth 498 allows wedge 462 to slide different distances to accommodate battery packs 14A, 14B of various sizes. Pawl 494 can be actuated by the user to disengage teeth 498 in a plurality of ways. In this embodiment, the housing 400 includes a button 499 or user-engageable portion for disengaging the pawl 494 from the teeth 498. The button 499 is connected to the pawl 494 such that the pawl 494 is cantilevered from the button 499. When the user depresses the button 499, the button 499 biases the pawl 494 to disengage from the teeth 498. Each pawl 494 can be disengaged individually or all at once. In this embodiment, each charging bay 432 includes a separate lock 458 and corresponding ratchet mechanism 490. In other embodiments, the charger 310 may include only one charging bay 432 and one lock 458. A spring 495 is disposed in the top 407 of the housing 400 to bias the wedge 462 in the second direction 479, such that when the pawl 494 disengages, the wedge 462 moves in the second direction 479 and retracts into the top 407 of the housing 400. When pawl 494 engages teeth 498 , the engagement between pawl 494 and teeth 498 prevents wedge 462 from being biased in second direction 479 by spring 495 .

[0067] Figures 16A-21B FIG. 1 shows a charger according to another embodiment of the present invention. The charger 1010 is similar to Figure 1 Therefore, like features are identified with like reference numerals plus "1000" and only the differences between the two will be discussed.

[0068] See also Figures 16A-17BCharger 1010 has a charger housing 1100, which includes a front wall 1112, a rear wall 1114, a top wall 1118, side walls 1126, and a second side wall 1130. Front wall 1112 and rear wall 1114 each include a plurality of charging bays 1132, each configured to receive a battery pack 14A or 14B. Charging bays 1132 define a battery insertion direction 1133. Battery insertion direction 1133 may also be referred to as a battery path. Top wall 1118 further includes a plurality of secondary charging bays 1134, each configured to receive a battery pack 13. Secondary charging bays 1134 have the same battery insertion direction 1133 as charging bays 1132. Top wall 1118 supports and partially houses lock 1158. Lock 1158 includes a plurality of members 1162, a plurality of secondary members 1163, and a user interface 1166. Each member 1162 is telescopically extendable into charging bay 132. In this embodiment, charger 1010 includes a plurality of members 1162 and charging bay 1132. In other embodiments, charger 1010 may have only a single member 1162 and a single charging bay 1132. In this embodiment, lock 1158 further includes a padlock 1175. In alternative embodiments, lock 1158 may be any type of lock including a shackle.

[0069] See also Figures 17A-20B The top wall 1118 includes a locking slot 1170 extending along the transverse axis D. The user interface 1166 protrudes from the charger housing 1100 through the locking slot 1170. The locking slot 1170 is configured to allow the user interface 1166 to slide between a locked position and an unlocked position. The user interface 1166 is biased toward the unlocked position by a spring force but is prevented from automatically moving to the unlocked position by a stop member 1171 disposed within the locking slot 1170. The stop member 1171 pivots about a hinge 1173 and is spring-biased to a flat, or non-pivoted, position. The stop member 1171 includes a first end 1177 and a second end 1179. The charger housing 1100 includes a locking protrusion 1178 extending transversely to the plane of the top wall 1118 and laterally to the battery insertion direction 1133. The locking protrusion 1178 includes a hole 1182 for inserting a padlock 1175. The stop member 1171 further includes a locking hole 1176 through which a locking protrusion 1178 extends.

[0070] When padlock 1175 is not inserted through aperture 1182, user interface 1166 is positionable, allowing a user to slide user interface 1166 between a locked position and an unlocked position. To slide user interface 1166 to the unlocked position, the user can press second end 1179 of stop member 1171 downwardly in a direction transverse to top wall 1118. When second end 1179 of stop member 1171 is pushed downwardly by the user, stop member 1171 pivots about hinge 1173, allowing user interface 1166 to slide to the unlocked position. When stop member 1171 pivots about hinge 1173, stop member 1171 blocks aperture 1182, preventing the user from inserting padlock 1175.

[0071] When user interface 1166 is in the locked position, user interface 1166 abuts stop member 1171. In this position, stop member 1171 is flat and extends along top wall 1118, and member 1162 extends into charging bay 1132. A user can insert and lock padlock 1175 through aperture 1182. Inserting and locking padlock 1175 prevents stop member 1171 from pivoting, thereby preventing user interface 1166 from sliding to the unlocked position. Additionally, when in the locked position, secondary member 1162 extends over latch 1188 of battery 14A to prevent a user from depressing latch 1188.

[0072] In an alternative embodiment, for example Figure 18A and 18B In the illustrated embodiment, the stop member 1171 may not include the locking hole 1176, but rather the locking protrusion 1178 may be on the side of the stop member 1171. In this case, the locking protrusion 1178 is positioned so that inserting and locking the padlock 1175 prevents the stop member 1171 from pivoting, preventing the user interface 1166 from sliding to the unlocked position.

[0073] See also Figure 21A and 21B, the charging bay 1132 is configured to receive the battery packs 14A, 14B. The charging bay 1132 may include a plurality of rails and grooves 1184 configured to correspond to the rails 66, 70 and grooves 74, 78 of the battery packs 14A, 14B. The charging bay 1132 includes a notch 1186 defined therein that is configured to receive the latch 98. The notch 1186 is configured to resist removal of the battery packs 14A, 14B unless the user engagement portion 94 is depressed. Actuating the user interface 1166 to the locked position causes the member 1162 to extend into the charging bay 1132. In the locked position, members 1162 extend transverse to the battery insertion direction 1133 and are positioned to overlap the latch 98 in the battery insertion direction 1133, regardless of the position of the latch 98 to the side of the battery insertion direction 1133 (i.e., when the user depresses the user engagement portion 94). When the lock 1158 is in the unlocked position and the user depresses the user engagement portion 94, the battery packs 14A, 14B can be removed from the charging bay 1132. When the lock 1158 is in the locked position and the user depresses the user engagement portion 94, members 1162 abut the latch 98 of the battery packs 14A, 14B and prevent the battery packs 14A, 14B from being removed from the charging bay 1132. In this embodiment, when the lock 1158 is in the locked position, all members 1162 extend into their respective charging bays 1132, preventing any inserted battery packs 14A, 14B from being removed. In alternative embodiments, individual battery packs 14A, 14B can be locked and unlocked independently.

[0074] Figure 22A and 22B FIG. 1 shows a charger according to another embodiment of the present invention. The charger 1110 is similar to Figure 5 Therefore, like features are identified with like reference numerals plus "1000," and only the differences between the two will be discussed.

[0075] Charger 1110 includes a charger housing 1200, which includes a bottom 1205 and a top 1207. Bottom 1205 includes a front wall 1212 and a rear wall 1214. Charger housing 1200 further includes a first side wall 1226 and a second side wall 1230. Front wall 1212 and rear wall 1214 each include a plurality of charging bays 1232, each configured to receive a battery pack 14A or 14B. Charging bays 1232 define a battery insertion direction 1233. Battery insertion direction 1233 may also be referred to as a battery path.

[0076] The charger housing 1200 supports and partially houses a lock 1258. The lock 1258 includes a user interface 1266, a plurality of first members 1261, and a plurality of second members 1262. The top 1207 includes a locking slot 1270 extending along a transverse axis E. The user interface 1266 protrudes from the charger housing 1200 through the locking slot 1270. The locking slot 1270 is configured such that the user interface 1266 can slide between a locked position and an unlocked position. The user interface 1266 includes a first aperture 1271 for inserting a padlock. The charger housing 1200 includes a lock protrusion 1278 extending transversely to the plane of the top 1207 and laterally to the battery insertion direction 1233. The lock protrusion 1278 includes a second aperture 1282 for inserting a padlock. The user interface 1266 is positionable so that a user can slide the user interface 1266 into a locked position so that the first hole 1271 and the second hole 1282 are aligned and the first member 1261 extends from the top 1207. In this position, the user can insert and lock a padlock, thereby preventing the user interface 1266 from sliding into an unlocked position in which the first hole 1271 and the second hole 1282 are no longer aligned.

[0077] Each first member 1261 is telescopically extended from the top 1207 via the user interface 1266. Thus, when the user interface 1266 slides to the locked position, the first member 1261 extends from the top 1207 into the path of movement of the second member 1262 (see FIG. Figure 22A When the user interface 1266 slides to the unlocked position, the first member 1261 retracts into the top 1207 and exits the movement path of the second member 1262 (see Figure 22B ).

[0078] Second member 1262 includes a first portion 1264 extending along battery insertion direction 1233 and a second portion 1265 extending transverse to battery insertion direction 1233. First portion 1264 protrudes from charger housing 1200 and extends from bottom 1205 through slot 1270. Slot 1270 is configured to define a movement path for second member 1262, allowing second member 1262 to slide toward battery packs 14A, 14B in a first direction 1275, or locking direction, and slide away from battery packs 14A, 14B in a second direction 1279, or unlocking direction. First direction 1275 extends transverse to battery insertion direction 1233. Second direction 1279 extends opposite first direction 1275. Spring 1301 abuts second portion 1265. Spring 1301 is configured to bias second member 1262 in first direction 1275.

[0079] Second portion 1265 includes a latch 1305 configured to be received by a recess in battery packs 14A, 14B. Latch 1305 is configured to resist removal of battery packs 14A, 14B unless a user actuates first portion 1264 in a second direction 1279. By default, spring 1301 biases second member 1262, causing latch 1305 to extend into charging bay 1132 and be received by a recess in battery packs 14A, 14B. When lock 1158 is in the unlocked position and a user actuates first portion 1264 in the second direction 1279, battery packs 14A, 14B can be removed from charging bay 132. When lock 158 is in the locked position, first member 1261 prevents the user from actuating first portion 1264 in the second direction 1279, preventing battery packs 14A, 14B from being removed from charging bay 132. In this embodiment, when the user interface 1266 is in the locked position, all first members 1262 extend across the path of movement of the second members 1262, preventing any inserted battery packs 14A, 14B from being removed. In alternative embodiments, individual battery packs 14A, 14B can be independently locked and unlocked.

[0080] See also Figure 23 , the lock 158, 258, 358, 458, 1158, 1258 of each of the aforementioned embodiments may not be mechanically actuated, but may be actuated by an electrical actuator 1334 (e.g., an electric motor, solenoid, etc.). Both the lock 158, 258, 358, 458, 1158, 1258 and the battery pack 14A, 14B may include a wireless transceiver 1300A, 1300B to wirelessly communicate commands and data between the electronic processor 1315 of the lock 158, 258, 358, 458, 1158, 1258 and a remote device 1302 (e.g., a user's smartphone, tablet, laptop, computer, etc.). For example, the lock 158, 258, 358, 458, 1158, 1258 may also communicate with a user's computer using a Bluetooth-enabled device. ® Tool management application 1304 integration with tags (such as Milwaukee Tool's ONE-KEY™ system).

[0081] In some cases, locks 158, 258, 358, 458, 1158, 1258 also include an electronic processor 1315, an input / output interface 1320, and a memory storage device 1325. In some embodiments, the electronic processor 1315 is implemented as a microprocessor with a separate memory (e.g., the memory storage device 1325). In other embodiments, the electronic processor 1315 can be implemented as a microcontroller (with the memory storage device 1325 on the same package). In other embodiments, the electronic processor 1315 can be implemented using multiple processors. Furthermore, the electronic processor 1315 can be implemented in part or in whole as, for example, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), etc., and the memory storage device 1325 may not be required or modified accordingly. In some embodiments, the memory storage device 1325 includes non-transitory computer-readable memory that stores instructions received and executed by the electronic processor 1315 to perform the methods described herein.

[0082] The memory storage device 1325 may include, for example, a program storage area and a data storage area. For example, a program for processing the lock state of locks 158, 258, 358, 458, 1158, 1258 may be stored in the memory storage device 1325. The memory storage device 1325 may include an embedded multimedia card (eMMc) memory for storing associated programs / firmware, etc. However, other memory types are also conceivable depending on the needs of a given application. In some cases, the captured and processed images may be saved to another location or device, such as on a Micro SD (micro secure digital) card or other memory storage device required for a given application. The program storage area and the data storage area may include a combination of different types of memory, such as read-only memory and random access memory.

[0083] In operation, the system can perform operations such as Figures 24-26 . The method 2400 is an exemplary method 2400 for locking the battery pack 14A, 14B to the battery charger 10, 110, 210, 310, 1010, 1110 of any of the aforementioned embodiments. In some embodiments, portions of the method 2400 may be automatically performed by the electronic processor 1315. Although portions of the operating procedures or methods are discussed in a certain order, this order is not intended to be limiting, and steps of the method may be moved or repeated as desired by the operator.

[0084] The user may first place the battery pack 14A, 14B in the charging bay 132, 232, 332, 432, 1132, 1232. The user may then open the tool management application 1304 on the remote device 1302. Opening the tool management application 1304 allows the user to connect the tool management application 1304 to both the lock 158, 258, 358, 458, 1158, 1258 and the battery pack 14A, 14B. The tool management application 1304 then checks that the tool management application 1304 is correctly connected to both the lock 158, 258, 358, 458, 1158, 1258 and the battery pack 14A, 14B (step S1). If the tool management application 1304 determines that both the lock 158, 258, 358, 458, 1158, 1258 and the battery pack 14A, 14B are not connected to the tool management application 1304, the method 2400 returns to step S1. In response to determining that the tool management application 1304 is correctly connected to the lock 158, 258, 358, 458, 1158, 1258 and the battery pack 14A, 14B, the tool management application 1304 checks whether the battery pack 14A, 14B is attached to the charger 10, 110, 210, 310, 1010, 1110 (step S2). If the battery pack 14A, 14B is not attached to the charger 10, 110, 210, 310, 1010, 1110, the tool management application 1304 prompts the user to connect the battery pack 14A, 14B to the charger 10, 110, 210, 310, 1010, 1110 (step S3). If the battery pack 14A, 14B is attached to the charger 10, 110, 210, 310, 1010, 1110, the tool management application checks whether the battery pack 14A, 14B is locked (step S4).

[0085] In response to the tool management application 1304 determining that the battery pack 14A, 14B is locked to the battery charger 10, 110, 210, 310, 1010, 1110, the tool management application illuminates an unlock button (not shown) for the user to press (step S5). In response to the user pressing the unlock button, the tool management application 1304 prompts the user to enter a previously set password (step S6). In response to the user entering the password, the tool management application reads the password entered by the user (step S7) and determines whether the password entered by the user is correct or incorrect (step S8). In response to an incorrect password being entered, the tool management application 1304 notifies the user that the password is incorrect (step S9) and returns to step S6. In response to the correct password being entered, the tool management application 1304 communicates with the electronic processor 1315 to unlock the battery pack 14A, 14B (step S10). Thereafter, the electronic processor 1315 controls the electrical actuator 1334 to unlock the battery packs 14A, 14B, thereby allowing the user to remove the battery packs 14A, 14B from the battery charger 10, 110, 210, 310, 1010, 1110 (step S11).

[0086] In response to the tool management application 1304 determining that the battery packs 14A, 14B are unlocked, the tool management application 1304 illuminates the lock button 1330 for the user to press (step S12). In response to the user pressing the lock button 1330, the tool management application 1304 prompts the user to set a password (step S13). In response to the user setting the password, the tool management application 1304 reads the password entered by the user (step S14) and stores it in the memory storage device 1325 (step S15). In response to storing the password in the memory storage device 1325, the tool management application 1304 communicates with the electronic processor 1315 to lock the battery packs 14A, 14B (step S16). The electronic processor 1315 then controls the electrical actuator 1334 to attempt to lock the battery packs 14A, 14B to the battery charger 10 (this may be referred to as a "locking operation"). Once the electrical actuator 1334 has attempted to lock the battery packs 14A, 14B, the electronic processor 1315 determines whether the battery packs 14A, 14B are successfully locked (step S17). In response to the electronic processor 1315 determining that the battery packs 14A, 14B are not successfully locked, the tool management application 1304 notifies the user that the locking operation failed and prompts the user to remove and reattach the battery packs 14A, 14B from the charger 10 (step S18) and returns to step S15. In response to the electronic processor 1315 determining that the battery packs 14A, 14B are successfully locked to the charger 10, 110, 210, 310, 1010, 1110, the tool management application 1304 notifies the user that the locking operation was successful (step S19).

[0087] The tool management application 1304 and the electrical actuator 1334 can allow for the envisioning of alternative locking mechanisms. For example, in some embodiments, a lock can be included within the battery 14A, 14B. In other words, an electronically actuated post can be located within the user engagement portion 94 of the battery 14A, 14B. The post can be configured to prevent or resist depression of the user engagement portion 94 when locking the battery 14A, 14B via the tool management application 1304. In such an embodiment, the post can be activated only in response to a communication from the tool management application 1304. Alternatively, a hook can be located on the surface of the battery 14A, 14B to resist removal of the battery 14A, 14B. The hook can be disposed adjacent to the user engagement portion 94.

[0088] Figure 27 FIG2 shows a charger according to another embodiment of the present invention. The charger 2210 is similar to Figure 9 The charger 210 shown in and described above is shown in FIG. Therefore, like features are identified with like reference numerals plus "2000," and only the differences between the two will be discussed.

[0089] The charger 2210 includes a charger housing 2300 that includes a plurality of charging bays 2332, each configured to receive a battery pack 14A, 14B. The battery packs 14A, 14B can be completely covered by a locking cover 1342 to prevent a user from accessing any portion of the battery packs 14A, 14B. In other words, when a battery 14A, 14B is received in a charging bay 2332 configured to receive a battery pack 14A, 14B, the locking cover 1342 can extend and cover the entire battery pack 14A, 14B, thereby preventing the user from removing the battery 14A, 14B. The locking cover 1342 can include a hinge 1344 about which it rotates. The charger housing 2300 can include a locking protrusion 1348 that extends transversely to the plane of the bottom wall of the charger housing 2300 and laterally to the battery insertion direction 2333. The locking projection 1348 includes a hole 1352 that allows for insertion of a padlock 1356. The locking cover 1342 may include a locking hole 1360 through which the locking projection 1348 extends. In some embodiments, the locking cover 1342 covers a plurality of battery packs 14A, 14B. In some embodiments, the locking cover 1342 covers a single battery 14A, 14B. In other embodiments, the locking cover 1342 may only cover the user-engaging portion 94 of the battery pack 14A, 14B.

[0090] In some embodiments, the member 162, 262, 363, 462, 1162, 1262 can be a spring loaded or otherwise biased pin 1336 (see, e.g., Figure 20B). Thus, the member 162, 262, 363, 462, 1162, 1262 can extend from the charger 10, 110, 210, 310, 1010, 1110 to prevent or resist the battery latch 98 from being depressed internally. The member 162, 262, 363, 462, 1162, 1262 can be a pin 1336, or the pin 1336 can be provided external to the member 162, 262, 363, 462, 1162, 1262. Alternatively or additionally, the member 162, 262, 363, 462, 1162, 1262 can be a movable flap or retractable member 1338 provided on the charger 10, 110, 210, 310, 1010, 1110 to prevent the battery 14A, 14B from being pulled out (see, e.g., Figure 5 ).For example, Figure 15 The battery packs 14A, 14B may include a recess 1340 configured to engage the retractable member 1338. Once locked, the retractable member 1338 may be configured to enter the recess 1340 to lock the battery packs 14A, 14B in place.

[0091] Alternatively or additionally, a removable hook may be provided on the surface of the battery 14A, 14B to prevent or resist the battery from being pulled out of the battery charger 10, 110, 210, 310, 1010, 1110. In such an embodiment, the removable hook would be placed behind and in contact with the existing battery latch 98 to prevent the battery 14A, 14B from being fully pulled out. The removable hook may be actuated electronically or otherwise.

[0092] In other embodiments, the battery packs 14A, 14B may be provided with protrusions that prevent the battery packs 14A, 14B from being removed from the charger 10, 110, 210, 310, 1010, 1110 when the charger 10, 110, 210, 310, 1010, 1110 is locked.

[0093] Providing a lock 158, 258, 358, 458, 1158, 1258 on the battery charger 10, 110, 210, 310, 1010, 1110 offers various advantages. For example, physically locking the batteries 14A, 14B can give the user an added sense of security. Furthermore, locking the batteries 14A, 14B allows the user to prevent coworkers on the job site from accessing the battery pack 14A, 14B. Thus, the lock 158, 258, 358, 458, 1158, 1258 provides the user with added peace of mind. Accordingly, the user knows that once charging is complete, the batteries 14A, 14B will still be there, ready for use. Locking the battery pack 14A, 14B can also serve as a theft deterrent. There may be situations where a user does not wish to completely lock their charger and battery pack in their tool rack. Locking the batteries 14A, 14B to the charger 10, 110, 210, 310, 1010, 1110 can serve as an additional theft deterrent. Additionally, locking the batteries 14A, 14B to the charger 10, 110, 210, 310, 1010, 1110 allows for an additional mechanism to prevent the batteries 14A, 14B from easily falling out of the charger 10, 110, 210, 310, 1010, 1110 if the batteries 14A, 14B are transported while charging.

[0094] Although the present invention has been described with reference to certain preferred aspects, variations and modifications exist within the scope and spirit of one or more independent aspects of the invention as described. Various features and advantages of the invention are recited in the appended claims.

Claims

1. A charger for use with a battery pack, characterized in that The charger comprises: a charging bay defining a battery path; and A lock comprising a member that telescopically extends into the charging bay transverse to the battery path, the member being positioned to overlap a latch of the battery pack in the battery path regardless of the position of the latch on the side of the battery path.

2. The charger according to claim 1, characterized in that Further included is an electrical actuator configured to actuate the lock, wherein actuating the lock causes the member to extend into the charging bay.

3. The charger according to claim 2, characterized in that The lock includes a wireless transceiver configured to communicate commands and data between an electronic processor of the charger and a remote device.

4. The charger according to claim 1, wherein: The lock includes a user interface, and Actuating the user interface causes the member to extend into the charging bay.

5. The charger according to claim 4, characterized in that: The user interface is biased by spring force toward an unlocked position in which the member does not extend into the charging bay.

6. The charger according to claim 5, characterized in that: Further included is a stop member configured to prevent the user interface from automatically moving to the unlocked position.

7. The charger according to claim 6, characterized in that: The stop member pivots about a hinge and a lock hole through which a lock protrusion extends, the lock protrusion being configured to receive a padlock.

8. The charger according to claim 1, characterized in that Further include a housing including a lock protrusion extending in a direction along the battery path; and wherein the lock includes a user interface having a first aperture defined therein; The locking projection includes a second aperture defined therein; and The first hole and the second hole may be aligned, which allows a padlock to be inserted through the first hole and the second hole.

9. A charger for use with a battery pack, characterized in that The charger comprises: a charging bay defining a battery path; and A lock comprising a member extending in a direction along the battery path, the member being freely movable in a first direction toward the charging compartment so that the member can be positioned to obstruct a user-engageable portion of a latch accessing the battery pack, the first direction extending transverse to the battery path, the member being selectively movable in a second direction extending in a direction opposite to the first direction once the lock is disengaged.

10. The charger according to claim 9, characterized in that: The member is L-shaped and includes a first portion extending in a direction along the battery path and a second portion extending in a direction transverse to the battery path.

11. The charger according to claim 10, characterized in that: The second portion of the member includes a plurality of teeth defined thereon, and the charger further includes a pawl engaged with the plurality of teeth.

12. A charger for use with a battery pack, characterized in that The charger comprises: a charging bay defining a battery path; and A lock comprising a component extending in a locking direction transverse to the battery path, the component being movable in the locking direction toward the charging compartment, the component being positioned to overlap the battery path, and the component being selectively movable in an unlocking direction extending in a direction opposite to the locking direction.

13. The charger according to claim 12, characterized in that: The lock includes a plurality of teeth defined thereon, and The charger further includes a pawl engaged with the plurality of teeth.

14. The charger according to claim 13, characterized in that: The pawl can be released from engagement with the plurality of teeth.

15. The charger according to claim 12, characterized in that: The member is configured to rotate about a member axis that extends in a direction transverse to a direction in which the member extends.

16. The charger according to claim 12, characterized in that: The member includes a wedge and a handle.

17. The charger according to claim 16, characterized in that: The lock includes a spring configured to bias the wedge in the unlocking direction.

18. The charger according to claim 12, characterized in that The unlocking direction and the locking direction are opposite linear directions or opposite rotational directions.

19. The charger according to claim 12, characterized in that The member includes a second member, The lock further includes a first member movable into a position at least partially overlapping the second member along the unlocking direction.

20. The charger according to claim 19, characterized in that The second member further includes a latch.

Images