Battery interchange system for battery powered floor maintenance equipment

• US 6,896,468 B2
• Filed: 01/21/2003
• Issued: 05/24/2005
• Est. Priority Date: 02/19/2002
• Status: Expired due to Fees

• Current Assignee: Tennant Company
• Original Assignee: Tennant Company
• Inventors: Gallea, Gregory P., Jensen, Laurence A.
• Primary Examiner(s): CHIN, RANDALL E
• Application Number:
  US10/348,459
• Publication Number:
  US 20030154566A1
• Time in Patent Office: 854 Days
• Field of Search: 15/1, 15/491, 15/501, 15/98, 15D/IG.1, 414/395, 414/396, 414/398, 414/400, 414/401
• US Class Current: 414/395
• CPC Class Codes: A47L 11/4005 Arrangements of batteries or cells; Electric power supply arrangements
• CPC Class Codes: B60L 53/80 Exchanging energy storage elements, e.g. removable batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A battery powered floor maintenance machine is alignable with a battery docking station that can slidably receive a spent battery assembly from the floor maintenance machine. The floor maintenance machine includes locking and aligning mechanisms to safely attach the machine to the docking station. Once attached, the battery assembly is slid onto the docking station for recharge. The floor machine can be removed from the docking station and attached to a second charging station with a fully charged battery assembly thereon. The battery assembly can be slid from the second charging station to the floor maintenance machine, allowing the machine to be returned to service.

Claims

1. An electrically powered floor maintenance machine, comprising:

a battery assembly slidably attached between a front end and a back end of the floor maintenance machine;

a docking side, the battery assembly slidable away from the floor maintenance machine at the docking side;

a locking mechanism attached to the docking side of the floor maintenance machine;

wherein the docking side of the floor maintenance machine is alignable with a docking station so that the locking mechanism is engagable with the docking station, the battery assembly slidable from the floor maintenance machine to a slidable receiving member of the docking station when the locking mechanism is engaged with the docking station and wherein the machine further comprises an alignment member attached to the docking side of the floor maintenance machine, the alignment member slidably connectable to an alignment receiving member of the docking station and wherein the alignment member is retractable within the floor maintenance machine.

2. The floor maintenance machine of claim 1, wherein the locking mechanism comprises a locking arm with a hook-shaped attachment end and a lever handle pivotably attached to the floor maintenance machine and the locking arm, the hook-shaped attachment end engaging a lock receiving mechanism on the docking station.

3. A method of interchanging a first battery assembly from an electrically powered floor maintenance machine, comprising:

maneuvering the floor maintenance machine to align a docking side of the floor maintenance machine to a first docking station by slidably engaping an alignment member of the floor maintenance machine with an alignment receiving member of the first docking station and by maneuvering the floor maintenance machine to contact a set of rollers on the first docking station;

engaging a locking mechanism of the floor maintenance machine with a lock receiving mechanism of the first docking station to positively attach the floor maintenance machine to the first docking station;

sliding the first battery assembly from the floor maintenance machine to the first docking station to unload the first battery assembly; and

disengaging the locking mechanism to release the floor maintenance machine from the first docking station.

4. The method of claim 3, wherein engaging the locking mechanism of the floor maintenance machine with a lock receiving mechanism of the first docking station also disengages a battery latching mechanism of the docking station to allow the first battery assembly to slide onto the docking station.

5. The method of claim 3, wherein disengaging the locking mechanism also engages a battery holding mechanism of the docking station to prevent the first battery assembly from sliding on the docking station.

6. The method of claim 3, further comprising:

maneuvering the floor maintenance machine to align the docking side of the floor maintenance machine to a second docking station;

engaging the locking mechanism of the floor maintenance machine with a lock receiving mechanism of the second docking station to positively attach the floor maintenance machine to the second docking station; and

sliding a second battery assembly from the second docking station to the floor maintenance machine to load the second battery assembly.

7. A floor maintenance system, comprising:

an electrically powered floor maintenance machine, comprising;

a battery assembly slidably attached to the floor maintenance machine, the battery assembly slidable away from a docking side of the floor maintenance machine;

a locking mechanism on the docking side of the floor maintenance machine;

a docking station, comprising;

a receiving side, an alignment of the receiving side with the docking side of the floor maintenance machine defining an alignment configuration of the floor maintenance system;

a battery receiving member for slidably receiving the battery assembly of the floor maintenance machine;

a lock receiving mechanism positively connectable to the locking mechanism of the floor maintenance machine in the alignment configuration of the floor maintenance system, a positive connection of the locking mechanism with the lock receiving mechanism defining an attached configuration of the floor maintenance system, said machine further comprising an alignment receiving member on the docking side and the docking station further comprises an alignment receiving member, the alignment member slidably connectable to the alignment receiving member in the alignment configuration of the floor maintenance system, and wherein the alignment receiving member of the docking station comprises an alignment receiving pin and the alignment member of the floor maintenance machine comprises an alignment arm with an alignment notch, the alignment notch slidably connectable with the alignment receiving pin and wherein the alignment member is retractable within the floor maintenance machine.

8. The floor maintenance system of claim 7, wherein the docking station further comprises a plurality of rollers on the receiving side of the docking station, at least one of the rollers contacting the floor maintenance machine in the alignment configuration of the floor maintenance system.

9. The floor maintenance system of claim 7, wherein the docking station further comprises a battery latching mechanism that prevents sliding of the battery assembly on the battery receiving member when the floor maintenance system is not in the attached configuration, the battery latching mechanism allowing sliding of the battery assembly on the battery receiving member in the attached configuration of the floor maintenance system.

10. The floor maintenance system of claim 9, wherein the battery latching mechanism is connected to the lock receiving mechanism of the docking station so that the battery latching mechanism allows sliding of the battery assembly on the battery receiving member when the lock receiving mechanism is positively connected to the locking mechanism of the floor maintenance machine.

11. The floor maintenance system of claim 7, wherein the locking mechanism of the floor maintenance machine comprises a locking arm with a hook-shaped attachment end and a lever handle pivotably attached to the floor maintenance machine and the locking arm.

13. The floor maintenance system of claim 7, wherein the battery receiving member comprises a pair of rails.

12. The floor maintenance system of 11, wherein the lock receiving mechanism comprises a receiving pin.