| 摘要 |
PROBLEM TO BE SOLVED: To provide a warm-up device for batteries, capable of warming up the batteries, even in fully charged condition, and reducing the space and the weight of external load. SOLUTION: This warm-up device for batteries of hybrid vehicles equipped with a battery pack 1 has a plurality of parallel-connected battery modules M1-Mn and a generator 7 which is driven by an engine 12 and charges the battery pack 1. Further, the device includes a switch 2 for electrically separating the module M1 and the other modules M2-Mn, and a switch 3 for connecting the module M1 with the external load 4. By turning off the switch 2, the modules M2-Mn are charged by the generator 7. By turning on the switch 3, the module M1 is discharged using the external load 4. Then by turning on the switch 3 after turning off the switch 2, the modules M2-Mn are discharged with the module M1 as a load, and the battery pack 1 is warmed up by self- heating. |
