# US 2013/0154350 A1 · Marine battery interconnection system

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- Number: US 2013/0154350 A1
- Document ID: US20130154350A1
- Status: Published application
- Kind: A1
- Application number: 13/327,370
- Filed: 2011-12-15
- Published: 2013-06-20
- Earliest claimed: 2011-12-15
- Inventors: Clifford BROWN
- Web page: https://patentgrep.com/patent/US20130154350A1

## CPC

- B60L 50/16: with provision for separate direct mechanical propulsion
- B60L 2200/32: Waterborne vessels
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A marine electrical system may include a first electrical subsystem and a second electrical subsystem. A jumper switching device may be interposed between the first and second subsystem. The jumper switching device may have normally open contacts. The first electrical subsystem may remain electrically independent from the second electrical subsystem except when the normally open contacts of the jumper switching device are closed.

## Claims

### Claim 1

A marine electrical system comprising:
a first electrical subsystem;
a second electrical subsystem; and
a jumper switching device interposed between the first and second subsystem, the jumper switching device having normally open contacts;
the first electrical subsystem being electrically independent from the second electrical subsystem except when the normally open contacts of the jumper switching device are closed.

### Claim 2 (depends on 1)

The system of claim 1 wherein the jumper switching device comprises spring-biased solenoid relays with normally open contacts.

### Claim 3 (depends on 2)

The system of claim 2 wherein:
the first subsystem includes a first battery;
the second subsystem includes a second battery;
a first one of the solenoid relays is interposed between positive terminal of the first and second batteries; and
a second one of the solenoids is interposed between negative battery terminals of the first and second batteries.

### Claim 4 (depends on 2)

The system of claim 2 wherein:
the first electrical subsystem included a main-engine starting motor and a starting battery;
the second electrical subsystem includes a trolling motor and a trolling battery; and
the solenoid relays are connected to operate with power from the trolling battery.

### Claim 5 (depends on 4)

The system of claim 4 further comprising a spring-biased normally-open switch connected to pass current from the trolling battery to the solenoid relays only when actuated so that upon release of the switch, the first and second electrical subsystem are restored to independent status.

### Claim 6

A jumper switching device comprising:
two spring-biased solenoid relays having normally open contacts;
first and second positive battery-terminal cables interconnected with first and second contacts of a first one of the solenoid relays;
first and second negative battery-terminal cables interconnected with first and second contacts of a second one of the solenoid relays;
a switch interconnected between the first positive battery-terminal cable and coil of the solenoid relays at coil terminals; and
an electrical connection path from said coil terminals, through said coils to the first negative battery-terminal cable.

### Claim 7 (depends on 6)

The device of claim 6 wherein the switch is spring-biased and is normally open.

### Claim 8 (depends on 7)

The device of claim 7 wherein the switch is a pushbutton switch.

### Claim 9 (depends on 6)

The device of claim 6 further comprising a waterproof box enclosing the solenoid relay and the electrical connection path.

### Claim 10 (depends on 6)

The device of claim 6 wherein the positive and negative battery-terminal cables are no smaller the No. 4 American Wire Gauge (AWG).