Motor vehicle battery disconnect circuit having electronic disconnects
First Claim
1. A disconnect switch module for disconnecting a battery bank from an electrical load upon occurrence of certain conditions, the module comprising one or more pairs of high-current, high-side solid state switch devices, the devices of each pair each comprising a solid-state switch comprising a source terminal and a drain terminal providing a conduction path through the switch, the source terminal of one device of each pair being connected to the load circuits, the source terminal of the other device of each pair being connected to the battery bank, and the drain terminals of the devices of each pair being connected in common further comprising a processor that is associated with each solid-state switch and that comprises an algorithm for processing data corresponding to battery bank voltage for causing the solid-state switches to disconnect the battery bank from the electrical load when data corresponding to battery bank voltage indicates that a battery has been connected in the battery bank to create a double battery.
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Accused Products
Abstract
An electronic disconnect switch module (12) in a motor vehicle has one or more pairs of high-current, high-side solid state switch devices (30A, 30B, 32A, and 32B). The source terminal of one device of each pair is connected to vehicle load circuits (27), the source terminal of the other device of each pair is connected to the vehicle battery bank (16), and the drain terminals of the devices of each pair are connected in common. The module also has a microcontroller (34) that interfaces the switch devices with the vehicle electrical system. Four feature groups are provided: Vehicle Electrical System Protection, Battery Charge Control, Battery Disconnect, and Battery Monitoring.
20 Citations
10 Claims
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1. A disconnect switch module for disconnecting a battery bank from an electrical load upon occurrence of certain conditions, the module comprising one or more pairs of high-current, high-side solid state switch devices, the devices of each pair each comprising a solid-state switch comprising a source terminal and a drain terminal providing a conduction path through the switch, the source terminal of one device of each pair being connected to the load circuits, the source terminal of the other device of each pair being connected to the battery bank, and the drain terminals of the devices of each pair being connected in common further comprising a processor that is associated with each solid-state switch and that comprises an algorithm for processing data corresponding to battery bank voltage for causing the solid-state switches to disconnect the battery bank from the electrical load when data corresponding to battery bank voltage indicates that a battery has been connected in the battery bank to create a double battery.
- 2. The combination of a battery bank comprising one or more D.C. storage batteries, an electrical load circuit, and a disconnect switch module for disconnecting the battery bank from the electrical load circuit upon occurrence of certain conditions, the disconnect switch module comprising one or more pairs of high-current, high-side solid state switch devices, the devices of each pair each comprising a solid-state switch comprising a source terminal and a drain terminal providing a conduction path through the switch, the source terminal of one device of each pair being connected to the electrical load circuit, the source terminal of the other device of each pair being connected to the battery bank, and the drain terminals of the devices of each pair being connected in common and further comprising a processor that is associated with each solid-state switch and that comprises an algorithm for processing data corresponding to battery bank voltage for causing the solid-state switches to disconnect the battery bank from the electrical load circuit when data corresponding to battery bank voltage indicates that a battery has been connected in the battery bank to create a double battery.
Specification