Battery system, vehicle, and battery-mounting device

摘要

A battery system includes a lithium ion rechargeable battery including a power generating element having a laminated part, a positive electrode extended part, and a negative electrode extended part. The battery system further includes a controller and a detector that detects the temperatures of a central laminated part in the laminated part, and at least one of a positive-side temperature detector that detects the temperatures of a positive side-laminated part in the laminated part and a negative-side temperature detector that detects the temperatures of a negative-side laminated part in the stacked part. The controller controls the lithium ion rechargeable battery using the temperature of the central laminated part, and at least one of the temperature of the positive-side laminated part and the temperature of the negative-side laminated part.

主权项

1. A battery system comprising:
a lithium ion secondary battery having a power generating element including
a positive electrode plate,a negative electrode plate, anda separator,the power generating element including
a laminated part in which the positive electrode plate and the negative electrode plate are laminated by interposing the separator therebetween,a positive extended part formed of a part of the positive electrode plate extending from the laminated part, anda negative extended part formed of a part of the negative electrode plate extending from the laminated part in an opposite direction to the positive extended part; control means for controlling the lithium ion secondary battery; wherein a positive and negative extending direction is defined as a direction joining the positive extended part and the negative extended part, and wherein the laminated part is divided in the positive and negative extending direction into three sections of: a central laminated part, a positive-side laminated part, and a negative-side laminated part, central temperature detecting means for detecting a temperature of the central laminated part located in the center of the laminated part in the positive and negative extending direction; and at least one of:
positive-side temperature detecting means for detecting a temperature of the positive-side laminated part of the laminated part, the positive-side laminated part being located closer to the positive extended part in the positive and negative extending direction than the central laminated part is, andnegative-side temperature detecting means for detecting a temperature of the negative-side laminated part of the laminated part, the negative-side laminated part being located closer to the negative extended part in the positive and negative extending direction than the central laminated part is, the control means being arranged to control the lithium ion secondary battery by use of the temperature of the central laminated part and at least one of the temperature of the positive-side laminated part, and the temperature of the negative-side laminated part.