Battery apparatus and method for measuring cell voltage
AssigneeLG Energy Solution, Ltd.
InventorsMinwoo Kim, Bo Hyun Seo, Seunghyun Lee, Tae Youn Kim
Life of this patent
Estimating the term…
Abstract
The first battery module and the second battery module are connected by a bus-bar. A cell voltage sensing circuit shared by at least some battery cells of the first battery module and at least some battery cells of the second battery module measures a voltage of each battery cell.
Claims17
A battery apparatus comprising:
- a first battery module including a first plurality of battery cells;
- a second battery module including a second plurality of battery cells;
- a bus-bar connecting a first electrode terminal of the first battery module and a second electrode terminal of the second battery module;
- a cell voltage sensing circuit shared by a first portion of battery cells included in the first plurality of battery cells and a second portion of battery cells included in the second plurality of battery cells, and configured to measure a voltage of each battery cell included in the first and second portions of battery cells and a voltage of the bus-bar;
- and
- a processor configured to correct a voltage of at least one battery cell among the first and second portions of battery cells based on the voltage of the bus-bar.
A method of measuring a cell voltage of a battery apparatus including a first battery module and a second battery module, the first battery module including a first plurality of battery cells, the second battery module including a second plurality of battery cells, the method comprising:
- measuring, by a cell voltage sensing circuit shared by a first portion of battery cells included in the first plurality of battery cells and a second portion of battery cells included in the second plurality of battery cells, a voltage of each battery cell included in the first and second portions of battery cells;
- measuring, by the cell voltage sensing circuit, a voltage of a bus-bar connecting the first battery module and the second battery module;
- and
- correcting, by a processor, a voltage of at least one battery cell among the first and second portions of battery cells based on the voltage of the bus-bar.
A battery apparatus comprising:
- a plurality of battery modules including a first battery module and a second battery module;
- a bus-bar connecting the first battery module and the second battery module;
- a cell voltage sensing circuit shared by a first plurality of battery cells of the first battery module and a second plurality of battery cells of the second battery module, and configured to measure a voltage of each of the first plurality of battery cells and the second plurality of battery cells;
- and
- a processor,
- wherein the cell voltage sensing circuit includes a plurality of pins,
- wherein a first battery cell included in the first plurality of battery cells is connected to the bus-bar, wherein a second battery cell included in the second plurality of battery cells is connected to the bus-bar, wherein a negative electrode of the first battery cell is connected to a first pin of the plurality of pins, wherein a positive electrode of the second battery cell is connected to a second pin of plurality of pins, and
- wherein the processor is configured to correct a voltage of the first battery cell or a voltage of the second battery cell based on a voltage between the first pin and the second pin.
Dependencies are inferred from the claim text.