Battery pack
First Claim
1. A battery pack comprising:
- battery stacks each formed of battery cells stacked on one another and bus bars disposed at a first end side of the battery stack for connection between electrode terminals of the battery cells;
a battery pack case housing the battery stacks;
a fan device disposed inside the battery pack case for circulating fluid within the battery pack case;
a communicating passage closed at one end and connected to an inlet of the fan device, the communicating passage being configured to enable the fluid that passes through each of the battery stacks to flow directly into the fan device; and
a spacer disposed between respective adjacent battery cells to guide the fluid blown from the fan device to flow in a direction from the first end side to a second end side opposite to the first end side along lateral sides of the battery cells, whereineach of the battery cells includes a battery cell case as an outer shell thereof that includes an exposed portion having a predetermined exposed length by which the battery cell case projects from an end at the first end side of the spacer.
1 Assignment
0 Petitions
Accused Products
Abstract
A battery pack includes battery stacks each formed of battery cells stacked on one another and bus bars disposed at a first end side of the battery stack for connection between electrode terminals of the battery cells, a battery pack case housing the battery stacks, a fan device disposed inside the battery pack case for circulating fluid within the battery pack case and a spacer disposed between respective adjacent battery cells to guide the fluid to flow in a direction from the first end side to a second end side opposite to the first end side along lateral sides of the battery cells. Each of the battery cells includes a battery cell case as an outer shell thereof that includes an exposed portion having a predetermined exposed length by which the battery cell case projects from an end at the first end side of the spacer.
8 Citations
12 Claims
-
1. A battery pack comprising:
-
battery stacks each formed of battery cells stacked on one another and bus bars disposed at a first end side of the battery stack for connection between electrode terminals of the battery cells; a battery pack case housing the battery stacks; a fan device disposed inside the battery pack case for circulating fluid within the battery pack case; a communicating passage closed at one end and connected to an inlet of the fan device, the communicating passage being configured to enable the fluid that passes through each of the battery stacks to flow directly into the fan device; and a spacer disposed between respective adjacent battery cells to guide the fluid blown from the fan device to flow in a direction from the first end side to a second end side opposite to the first end side along lateral sides of the battery cells, wherein each of the battery cells includes a battery cell case as an outer shell thereof that includes an exposed portion having a predetermined exposed length by which the battery cell case projects from an end at the first end side of the spacer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A battery pack comprising:
-
battery stacks each formed of battery cells stacked on one another and bus bars disposed at a first end side of the battery stack for connection between electrode terminals of the battery cells; a battery pack case housing the battery stacks; a fan device disposed inside the battery pack case for circulating fluid within the battery pack case; and a spacer disposed between respective adjacent battery call to guide the fluid blown from the fan device to flow in a direction from the first end side to a second end side opposite to the first end side along lateral sides of the battery cells, wherein each of the battery cells includes a battery cell case as an outer shell thereof that includes an exposed portion having a predetermined exposed length by which the battery cell case projects from an end at the first end side of the spacer, the battery stacks are arranged in a row, the battery pack further comprising a communicating passage enabling the fluid blown from the fan device and flowing around the battery cells to return to the fan device, the exposed length of the exposed portion is different for each battery stack, and the exposed length for the battery stack closer to the fan device is larger than the exposed length of the battery stack farther from the fan device.
-
-
12. A battery pack comprising:
-
battery stacks each formed of battery cells stacked on one another and bus bars disposed at a first end side of the battery stack for connection between electrode terminals of the battery cells; a battery pack case housing the battery stacks; a fan device disposed inside the battery pack case for circulating fluid within the battery pack case; and a spacer disposed between respective adjacent battery cell to guide the fluid blown from the fan device to flow in a direction from the first end side to a second end side opposite to the first end side along lateral sides of the battery cells, wherein each of the battery cell includes a battery cell case as an outer shell thereof that includes an exposed portion having a predetermined exposed length by which the battery cell case projects from an end at the first end side of the spacer, the battery stacks are arranged in a row, the battery pack further comprising a communicating passage enabling the fluid blown from the fan device and flowing around the battery cells to return to the fan device, the exposed length of the exposed portion is different for each battery stack, and a blocking part is provided between each adjacent two of the battery stacks to block the fluid blown from the fan device from entering the communicating passage.
-
Specification