| 摘要 |
<P>PROBLEM TO BE SOLVED: To give a warning to prompt a user to perform battery diagnosis at appropriate timing in view of his usage. <P>SOLUTION: When one of battery ages YP, YIout corresponding to the level of battery wear deterioration and battery ages YV, YIin corresponding to battery precipitation deterioration reaches an upper limit age of 20 years, a control circuit gives a warning to the user by displaying a diagnosis request message requesting battery diagnosis. When the battery diagnosis is carried out in this case and the diagnosis result is "continued use allowed", the control circuit updates each battery age Y to: 20 years minus permitted use years ΔY. If the battery age YV corresponding to the level of precipitation deterioration reaches 20 years, the control circuit sets the permitted use years ΔY to a shorter value as a battery use period (battery age YP) is shorter. <P>COPYRIGHT: (C)2012,JPO&INPIT |
