Battery system
AssigneeLG Energy Solution, Ltd.
InventorSunwoo Yoon
Life of this patent
Estimating the term…
Abstract
Discussed is a battery system including: a battery pack including a plurality of battery cells; a battery monitoring integrated circuit (BMIC) configured to monitor each of a plurality of cell voltages of the plurality of battery cells; a plurality of balancing batteries each charged by a target battery cell requiring a cell balancing among the plurality of battery cells; a power conversion unit including a direct-current to direct-current (DC-DC) converter receiving voltages from the plurality of balancing batteries and configured to convert the voltages into output voltages; and a power supply unit configured to supply the output voltages to the BMIC when the output voltages have a voltage equal to or greater than a predetermined level for driving the BMIC.
Claims14
A battery system comprising:
- a battery pack including a plurality of battery cells;
- a battery monitoring integrated circuit (BMIC) configured to monitor each of a plurality of cell voltages of the plurality of battery cells;
- a plurality of balancing batteries each charged by a target battery cell requiring a cell balancing among the plurality of battery cells;
- a power conversion unit including a direct-current to direct-current (DC-DC) converter receiving voltages from the plurality of balancing batteries and configured to convert the voltages into output voltages;
- and
- a power supply unit configured to supply the output voltages to the BMIC when the output voltage have a voltage equal to or greater than a predetermined level for driving the BMIC.
A battery system comprising:
- a battery pack including a plurality of battery cells;
- a battery monitoring integrated circuit (BMIC) configured to measure each of a plurality of cell voltages of the plurality of battery cells;
- a main control unit (MCU) configured to receive the plurality of cell voltages and determine a target battery cell requiring a cell balancing among the plurality of battery cells;
- a plurality of balancing batteries charged by the cell balancing;
- a multiplexer (MUX) connecting the determined target battery cell to a corresponding one of the plurality of balancing batteries under a control of the MCU;
- a direct-current to direct-current (DC-DC) converter configured to generate an output voltage by converting each voltage input from the plurality of balancing batteries;
- and
- a power supply unit configured to supply the BMIC with a higher voltage among a voltage generated using the output voltage of the DC-DC converter and a voltage of the battery pack.
A battery system comprising:
- a plurality of battery packs each including a plurality of battery cells;
- a plurality of slave battery management systems (BMSs) configured to respectively manage the plurality of battery packs, each of the plurality of slave BMSs including a battery monitoring integrated circuit (BMIC) connected to a plurality of corresponding battery cells to measure a plurality of cell voltages, and controlling a cell balancing;
- a plurality of balancing batteries included in each of the plurality of slave BMSs and charged by the cell balancing;
- a direct-current to direct-current (DC-DC) converter configured to generate an output voltage by converting each voltage supplied from the plurality of balancing batteries;
- and
- a power supply unit configured to supply the BMIC with a higher voltage among a voltage generated using the output voltage of the DC-DC converter and a voltage of the plurality of battery packs.
Dependencies are inferred from the claim text.