Mobile cart and power system therefor
First Claim
Patent Images
1. A power system for mobile cart, comprising:
- a battery assembly comprising a plurality of rechargeable batteries, a battery support for supporting each respective one of said batteries wherein said battery support is mountable on a mobile cart and said respective battery is removeably engageable with and disengagable from said battery support from an exterior of said battery support, said battery assembly including a battery connector for each said battery which is engageable with said battery when said battery is installed on said respective battery support, each said battery being individually removable from said battery support independently of any other said battery supported by said battery support to supply power through said battery connector;
a battery control system for controlling discharge of said batteries, which has a control unit comprising a controller connected to said battery connector for controlling battery discharge, a power outlet receiving power under the control of said controller and supplying said power to electrical equipment on a mobile cart, wherein discharging of said battery supplies battery power to said power outlet; and
said controller having a switch that selectively controls which said battery is being discharged to supply said battery power to said power outlet, and said controller communicating with and monitoring a battery charge of each said battery, said controller switching from a first said battery to a second said battery when said battery charge is at a minimum charge or said first battery is removed from said battery support, wherein when external power is not present or has been removed, said controller determines which said battery to use, wherein said controller monitors if said battery charge of each said battery is below a minimum charge which establishes that a battery is discharged, said controller first using said battery which is above said minimum charge and has the lowest battery charge relative to each other said battery to supply said battery power to said power outlet.
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Abstract
A mobile cart has a battery assembly, which includes an on-board charger for selectively recharging one or more batteries to ensure constant operation of the powered equipment provided on the cart. The battery assembly possesses a removable battery configuration and is operated by a Battery Control System (BCS). The BCS is an intelligent control system for removable batteries and battery cell packs to provide an improved system of charging and discharging the individual batteries.
23 Citations
18 Claims
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1. A power system for mobile cart, comprising:
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a battery assembly comprising a plurality of rechargeable batteries, a battery support for supporting each respective one of said batteries wherein said battery support is mountable on a mobile cart and said respective battery is removeably engageable with and disengagable from said battery support from an exterior of said battery support, said battery assembly including a battery connector for each said battery which is engageable with said battery when said battery is installed on said respective battery support, each said battery being individually removable from said battery support independently of any other said battery supported by said battery support to supply power through said battery connector; a battery control system for controlling discharge of said batteries, which has a control unit comprising a controller connected to said battery connector for controlling battery discharge, a power outlet receiving power under the control of said controller and supplying said power to electrical equipment on a mobile cart, wherein discharging of said battery supplies battery power to said power outlet; and said controller having a switch that selectively controls which said battery is being discharged to supply said battery power to said power outlet, and said controller communicating with and monitoring a battery charge of each said battery, said controller switching from a first said battery to a second said battery when said battery charge is at a minimum charge or said first battery is removed from said battery support, wherein when external power is not present or has been removed, said controller determines which said battery to use, wherein said controller monitors if said battery charge of each said battery is below a minimum charge which establishes that a battery is discharged, said controller first using said battery which is above said minimum charge and has the lowest battery charge relative to each other said battery to supply said battery power to said power outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A power system for a mobile cart, comprising:
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a battery assembly comprising a plurality of rechargeable batteries, a battery support for supporting each respective one of said batteries wherein said battery support is mountable on a mobile cart and said respective battery is removeably engageable with and disengagable from said battery support, said battery assembly including a battery connector for each said battery which is engageable with said battery when said battery is installed on said respective battery support, each said battery being individually removable from said battery support independently of any other said battery supported by said battery support such that any other said battery remaining on said battery support to supply power through said battery connector; a power supply which is removably connectable to external power and which provides power to said power system when each said battery is removed or is discharged to a battery charge below a minimum charge; a battery control system for controlling discharge of said batteries, which has a control unit comprising a controller connected to said battery connector for controlling battery discharge, a power outlet receiving power under the control of said controller from said power supply or from one said battery and supplying outlet power to electrical equipment connected thereto, wherein discharging of said battery supplies said battery power to said power outlet; and said controller having a switch that selectively controls which said battery is being discharged to supply said battery power to said power outlet, and said controller communicating with and monitoring said battery charge of each said battery and the presence of each said battery on said mobile cart, said controller discontinuing use of a first said battery when said battery charge drops below said minimum charge or said first battery is removed, and said controller switching to either a second said battery, or else to said power supply if each said battery is below said minimum charge or each said battery is removed from said respective battery support, said controller determining which said battery to use, wherein said controller determines when said battery charge of each said battery is below said minimum charge which establishes that said battery is discharged, further said controller first using said battery which is above said minimum charge and has the lowest battery charge to supply said battery power to said power outlet. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification