CHARGE-STORAGE WORKSTATION SYSTEM AND METHOD FOR RECHARGEABLE-BATTERY-POWERED TOOLS

Abstract

A charge-storage workstation system and method for controlling and monitoring several different battery chargers, for notifying a user of the charged status of several different batteries, for eliminating power consumption by inactive battery chargers, and for safe convenient storage of rechargeable-battery-powered tools. A frame, broad-set legs, narrow-set legs, top surface, and skirt support the tools and the other components. Electric power is supplied through an electric supply cord to a main GFCI outlet and to charger outlets. Various battery chargers are plugged into the charger outlets through sensors which sense current drawn by the battery chargers. A charge controller-monitor senses the current drawn by each battery charger through the corresponding sensor and reports the charged status of each battery as specified by the user.

Under user control, the charge controller-monitor can cut power to inactive battery chargers to reduce wasteful use of electric power.

Claims

1. A charge-storage workstation system for rechargeable-battery-powered tools, the charge-storage workstation system comprising: (i) a frame supported by a plurality of legs, said frame being configured to detachably support a plurality of battery charging units; (ii) an electric supply cord connected to said frame; (iii) a main GFCI outlet adapted to draw power from said electric supply cord and provide GFCI-protected power for the battery charging units; (iv) at least one charger outlet mounted on said frame and adapted to provide power to a battery charging unit supported by the frame; (v) at least one sensor, each corresponding to one said battery charging units, adapted to sense the current drawn by the corresponding battery charging unit; and (vi) a charge controller-monitor adapted to monitor the charging activity of each said battery charging unit through each corresponding said sensor, and to control the supply of electric power through each corresponding said charger outlet, and to make indications or notifications of charging or completed-charging status, according to operating parameters and commands set by the user.

2. The workstation of claim 1, comprising a top surface attached to said frame and a skirt extending downwardly from said top surface, and wherein passways are formed in said top surface and said skirt to allow routing of power cords of said battery charging units.

3. The workstation of claim 2, wherein said top surface and said skirt are each provided with at least one opening to accommodate placement and storage of tools upon said workstation.

4. The workstation of claim 2, wherein at least one hanging loop is secured to an underside of the top surface to allow accommodation and storage of tools upon said workstation.

5. The charge-storage workstation system of claim 1, further comprising a USB charge outlet.

6. The charge-storage workstation system of claim 1, further comprising a wireless charge pad.

7. The charge-storage workstation system of claim 1, where said charge controller-monitor further comprises a display.

8. The charge-storage workstation system of claim 1, where said charge controller-monitor further comprises user-input means.

9. The charge-storage workstation system of claim 1, further comprising a communications link and a remote-control unit.

10. A method of charging battery charging units, comprising the steps: (i) providing a frame supported by a plurality of legs, said frame being configured to detachably support a plurality of battery charging units; an electric supply cord connected to said frame; a main GFCI outlet adapted to draw power from said electric supply cord and provide GFCI-protected power for the battery charging units; at least one charger outlet mounted on said frame and adapted to provide power to a battery charging unit supported by the frame; at least one sensor, each corresponding to one said battery charging units adapted to sense the current drawn by the corresponding battery charging unit; and a charge controller-monitor adapted to monitor the charging activity of each said battery charging unit through each corresponding said sensor, and to control the supply of electric power through each corresponding said charger outlet, and to make indications or notifications of charging or idle status, according to operating parameters and commands set by the user; (ii) connecting at least one battery-chargeable unit to said at least one charger outlet and said sensor; (iii) inputting operating parameters and commands into said charge controller-monitor; and (iv) monitoring charging or completed-charging status of said battery charging unit; and (v) disconnecting power supply to the complete-charging unit upon demand.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Reference will now be made to the drawings, wherein like parts are designated by like numerals, and wherein:

[0013] FIG. 1 is a front perspective view of the charge-storage workstation of the invention in use;

[0014] FIG. 2 is a front perspective view of the charge-storage workstation of the invention;

[0015] FIG. 3 is a back perspective view of the charge-storage workstation of the invention in use;

[0016] FIG. 4 is a back perspective view of the charge-storage workstation of the invention;

[0017] FIG. 5 is a cutaway detail view of the sensor of the charge-storage workstation of the invention;

[0018] FIG. 6 is a top view of the charge-storage workstation of the invention in use;

[0019] FIG. 7 is a bottom view of the charge-storage workstation of the invention in use;

[0020] FIG. 8 is a front view of the charge-storage workstation of the invention in use;

[0021] FIG. 9 is a back view of the charge-storage workstation of the invention in use;

[0022] FIG. 10 is a left side view of the charge-storage workstation of the invention in use;

[0023] FIG. 11 is a right side view of the charge-storage workstation of the invention in use; and

[0024] FIG. 12 is a front perspective view of a remote-control embodiment of the charge-storage workstation of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0025] The charge-storage workstation 1 system and method of the invention is shown in use in use with a variety of rechargeable-battery-powered tools in FIG. 1 from the front and FIG. 3 from the back, and is shown without the tools in FIG. 2 from the front and FIG. 3 from the back. The charge-storage workstation 1 provides for storage of rechargeable-battery-powered tools and for charging of rechargeable tool batteries using various battery chargers appropriate for various types of tools and brands of tools, including proprietary battery chargers, with monitoring of the charging status of the various battery chargers, alerting the user about the charging status, and deactivation of specific battery chargers when appropriate to prevent wasteful use of electric power.

[0026] Referring additionally to side views FIG. 10 and FIG. 11, the charge-storage workstation 1 provides a frame 2 and two pairs of legs, broad-set legs 3 at the front and narrow-set legs 4 at the back. Optionally, wheels can be provided on either or both the broad-set legs 3 and narrow-set legs 4, as shown in the illustrated embodiment.

[0027] Referring additionally to top view FIG. 6 and bottom view FIG. 7, the charge-storage workstation 1 provides a top surface 6 structure above the frame 2 for placement and storage of tools, chargers, and other items, as shown in FIG. 1 and FIG. 3.

[0028] Referring additionally to front view FIG. 8 and back view FIG. 9, the charge-storage workstation 1 provides a skirt 7 structure mounted in front of and extending over the broad-set legs 3. Battery chargers can be mounted upon the skirt 7, as shown in FIG. 1 and FIG. 3.

[0029] Blade slots 8 are provided in the top surface 6 and the skirt 7 to accommodate placement and storage of tools having long blades such as chain saws and hedge trimmers as illustrated. Hanging loops 9 are provided under and descending from the top surface 6 to accommodate placement and storage of tools such as the hand drill illustrated. A large opening 10 is provided to accommodate placement and storage of a larger tool such as the portable blower illustrated.

[0030] Electric power for operation of the charge-storage workstation 1 is provided through a provided electric supply cord 11. This electric power will usually be alternating-current mains power having voltage and frequency appropriate for the region of use, which will also be the voltage and frequency that battery chargers in that region are designed for. The electric supply cord 11 should be of durable construction and should have electrical conductors of sufficient size and composition to pass the needed current without generating heat and wasting power. The electric supply cord 11 can be a longer cord of a length allowing for convenient placement of the charge-storage workstation 1, or can be a shorter cord which can be extended with an appropriate extension cord.

[0031] Electric power for operation of the charge-storage workstation 1 is transmitted through the electric supply cord 1 to the main GFCI outlet 12 mounted on the skirt 7 of the charge-storage workstation 1, which provides a ground fault circuit interruption safety function for the entire charge-storage workstation 1 and provides power outlets which are not monitored and not intended for use with the battery chargers. The GFCI-protected power from the main GFCI outlet 12 is provided to one or more charger outlets 13 which are meant to power one or more battery chargers placed or mounted upon the charge-storage workstation 1. Cord passways 14 are provided in the top surface 6 and skirt 7 for the routing of power cords from the battery chargers to the charger outlets 13.

[0032] Optionally, in the preferred embodiment illustrated, a USB charge outlet 15 and a wireless charge pad 16 are also provided. The USB charge outlet can provide either or both the USB-A and USB-C socket configurations, and can provide only the generally safe and applicable 5 volts DC or can provide stepped-up power according to a standard protocol. The wireless charge pad can provide inductive power according to standard protocols.

[0033] The charge-storage workstation 1 provides a charge controller-monitor 17 for controlling and monitoring operations and for notifying the user of conditions such as the completion of charging by a particular battery charger, according to operating parameters set by the user. Each battery charger receives power through a sensor 18 associated with that particular battery charger. Referring to FIG. 5, each sensor 18 senses the current drawn by the plugged-in battery charger. As illustrated, the sensing of current can be accomplished by sensing a loop encompassing one but not both conductors. Although different, usually proprietary, battery chargers have different ways of signaling the charging or fully-charged status of a battery, any given battery charger will draw significantly more current when actively charging a battery than when not actively charging. By monitoring each sensor 18 for a significant rise in current drawn followed by a significant drop, the charge controller-monitor 17 can determine that the corresponding battery charger has charged and completed charging the battery. This completion of charging a particular battery can be signaled to the user through a display on the charge controller-monitor 17 and through a notification light or notification sound if such notification is requested by the user. Many battery chargers consume at least some small amount of power even when not actively charging a battery and even when no battery is mounted in the charger.

[0034] The charge controller-monitor 17 through the sensors 18 can determine when particular battery chargers are inactive, and can cut power to the particular charger if the user has commanded the charge controller-monitor 17 to do so. In such a case, the user can restore power and reactivate a charger with a command to the charge controller-monitor 17. In the usual circumstances of having several different proprietary chargers, each receiving only occasional use, this feature can conserve electric power by preventing the large number of chargers from wasting small amounts of power adding up to a significant waste of power. The sensor 18 can be implemented as a separate unit, as illustrated, or can be incorporated within the enclosure surrounding the charger outlet 13.

[0035] Where a user is interested in the charged status of a particular battery, the user can enter into the charge controller-monitor an association of the particular battery with a particular battery charger associated with a particular sensor 18, and the user can enter into the charge controller-monitor 17 a command to activate the battery charger, to monitor the charged status of the battery by sensing of the current, and to notify the user of the charged status of the battery. The charge controller-monitor 17 provides a display and user-input means such as buttons or touch pads for such user input of operating parameters and commands. The charge controller-monitor 17 also provides the display and other indicators such as a light or a buzzer or speaker for making notifications or indications of status.

[0036] Referring to FIG. 12, a remote-control embodiment of the charge-storage workstation 1 further provides a communications link 21 integrated with the charge controller-monitor 17 and remote-control unit 22 allowing a user who is away from the charge-storage workstation 1 to monitor and control the charging of batteries. The communications link 21 can be a radio-frequency link such as WIFI or BLUETOOTH or a cellular telephone or data link, which are readily available and easy to implement, or can be a different radio-frequency link using allowable frequency bands or another link such as an optical link. The remote-control unit 22 can be implemented on proprietary equipment or can be implemented as an application for use on an existing communications device such as a smartphone, tablet, or computer. Using the remote-control unit 22, the user can remotely monitor and control the charge-storage workstation 1 through the charge controller-monitor 17. As an alternative, a monitor-only implementation can be provided in which the communications link 21 of the charge controller-monitor sends SMS or text messages or similar notifications, for example when the charging of a particular battery has been completed.

[0037] Many other changes and modifications can be made in the system and method of the present invention without departing from the spirit thereof. I therefore pray that my rights to the present invention be limited only by the scope of the appended claims.