Battery monitoring system and semiconductor device
AssigneeLapis Semiconductor Co., Ltd.
InventorNaoaki Sugimura
Life of this patent
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Abstract
A battery monitoring system includes a plurality of battery cells connected in series; a cell voltage measurement circuit for measuring a voltage of the battery cells; a first terminal connected to the cell voltage measurement circuit; a second terminal having a potential higher than that of the first terminal; and a protection circuit connected to the second terminal for discharging an electric current to the second terminal so that the cell voltage measurement circuit is protected.
Claims8
A battery monitoring system comprising:
- a plurality of battery cells connected in series;
- a cell voltage measurement circuit for measuring a voltage of the battery cells;
- a first terminal connected directly to the cell voltage measurement circuit with no circuitry element in between;
- a second terminal isolated from the cell voltage measurement circuit, said second terminal having a potential higher than that of the first terminal;
- and
- a protection circuit connected to the second terminal for discharging an electric current from a protection element to the second terminal so that the cell voltage measurement circuit is protected.
A semiconductor device capable of measuring a voltage of a plurality of battery cells connected in series, comprising:
- a cell voltage measurement circuit for measuring the voltage of the battery cells;
- a first terminal connected directly to the cell voltage measurement circuit with no circuitry element in between;
- a second terminal isolated from the cell voltage measurement circuit, said second terminal having a potential higher than that of the first terminal;
- and
- a protection circuit connected to the second terminal for discharging an electric current from a protection element to the second terminal so that the cell voltage measurement circuit is protected.
Dependencies are inferred from the claim text.