| 摘要 |
<p>Provided is an apparatus for detecting a charged state (SOC) of a battery. A voltage of a battery pack (100) is detected by voltage sensors (120-1) to (120-n). A judging section (160) performs sampling of currents in timing when the battery voltage reaches prescribed threshold voltages (Vth1, Vth2,) respectively, and calculates an open end voltage (Vocv), based on representative values (I1, I2) and (Vth1, Vth2) of the sampled currents. Furthermore, by using previously obtained correspondence relationship between the voltage (Vocv) and the charged state (SOC), a charged state (SOC) that corresponds to the calculated voltage (Vocv) is calculated.</p> |
