Multiplexed modular battery management system for large battery packs
First Claim
Patent Images
1. An energy management system for monitoring an energy storage device comprising:
- a plurality of cells forming the energy storage device, each of the cells having a line for communicating a voltage signal;
a local module connected to the cells of the energy storage device, the local module having a plurality of inputs for receiving the voltage signals generated by the cells, and the local module having an output stage for providing a multiplexed output signal; and
a processor for receiving the multiplexed output signal from the local module and monitoring the voltage signals produced by the energy storage device.
20 Assignments
0 Petitions
Accused Products
Abstract
An energy management system for monitoring an energy storage device is disclosed. The energy management system includes a plurality of cells forming the energy storage device. Each of the cells includes a line for communicating a voltage signal. A local module is connected to the cells of the energy storage device. The local module has a plurality of inputs for receiving the voltage signals generated by the cells. The local module provides a multiplexed output signal. A processor is provided for receiving the multiplexed output signal from the local module and monitoring the voltage signals produced by the energy storage device.
-
Citations
19 Claims
-
1. An energy management system for monitoring an energy storage device comprising:
-
a plurality of cells forming the energy storage device, each of the cells having a line for communicating a voltage signal; a local module connected to the cells of the energy storage device, the local module having a plurality of inputs for receiving the voltage signals generated by the cells, and the local module having an output stage for providing a multiplexed output signal; and a processor for receiving the multiplexed output signal from the local module and monitoring the voltage signals produced by the energy storage device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A modular energy management system for monitoring a battery system comprising:
-
a plurality of cells forming the battery system; a local module connected to the plurality of cells, the local module including a multiplexing circuit for generating a multiplexed output, the multiplexed output producing a series of voltage signals associated with the cells; a control module for processing the voltage signals received from the local module; and an output stage disposed between the multiplexing circuit and the control module, the output stage including a voltage divider circuit operative for providing galvanic isolation between the plurality of cells and the processor. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A modular battery management system for monitoring a battery system comprising:
-
a plurality of cells forming the battery system; a plurality of local modules, each of the local modules connected to a series of cells within the battery system, each of the local modules including a multiplexing circuit for generating a multiplexed output, the multiplexed output producing a series of voltage signals associated with the cells; a control module for receiving the voltage signals from each of the local modules; an output stage disposed between the multiplexing circuit and the control module, the output stage including a first output for receiving the voltage signals directly from an output of the multiplexing circuit, and a second output for receiving the voltage signals from a voltage divider circuit connected to the output of the multiplexing circuit; the first output being connected to the control module when the local module is connected to the lowest potential series of cells within the battery system, and the second output being connected to the control module when the local module is connected to the series of cells other than the lowest potential series of cells within the battery system. - View Dependent Claims (15, 16, 17, 18, 19)
-
Specification