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Automatic battery switching circuit for a marine propulsion system
| Details |
Inventors: Sleder, Sr., Richard L.;
Assignee: Brunswick Corporation (Lake Forest, IL)
Primary Examiner: Wong; Peter S.
Assistant Examiner: Luk; Lawrence
Attorney, Agent or Firm: Lanyi; William D.
A battery switching circuit provides a mechanism by which a plurality of electrical storage batteries can be alternatively connected in parallel or series based on the position of a manually controlled joystick of a marine positioning and maneuvering system. When the joystick is in a neutral position in which no docking motion is demanded by the marine vessel operator, the storage batteries are connected in parallel so that they can benefit from charging by an alternator or generator associated with an internal combustion engine. If the joystick is moved out of its neutral position, the batteries are immediately connected in series to provide power to a plurality of electric motors that are used to drive a plurality of impellers of the docking system. |
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DETAILED DESCRIPTION The battery switching circuit for a marine propulsion system made in accordance with the present invention comprises first, second, and third batteries which each have a positive terminal and a negative terminal.
The circuit also comprises a source of charging power such as an alternator or generator that is driven by an internal combustion engine.
The internal combustion engine can be part of an outboard motor or a sterndrive marine propulsion system.
It further comprises a manually controlled electrically operated device having an active state and an inactive state.
In a preferred embodiment of the present invention, the electrically operated device is a boat docking system which comprises a controller and a plurality of electric motors which are each provided with a propeller or impeller.
A preferred embodiment of the present invention also comprises first, second, third, and fourth switches that are each selectively connected to one or more of the batteries.
A switch controller is provided for causing the first, second, third, and fourth switches to be placed in a first condition when the manually controlled electrically operated device is in the inactive state and for causing the first, second, third, and fourth switches to be placed in a second condition when the manually controlled electrically operated device is in the active state.
In a preferred embodiment of the present invention, the switches are all in their first state when in the first condition, and in their second state when in the second condition.
A preferred embodiment of the present invention further comprises a fourth battery that is used to start the internal combustion engine and is connected with its positive terminal connected to the source of charging power and its negative terminal connected to a point of ground potential so that the fourth battery receives a charge when the internal combustion engine is operating and is available to start the internal combustion engine when needed.
The fourth battery and the first, second, and third batteries are isolated by diodes such that the fourth, or engine, battery cannot discharge into the first, second, or third batteries and their load
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