Gas permeable member and gas permeable container
US-2017271092-A1 · Sep 21, 2017 · US
Electricity storage device
US10256444B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10256444-B2 |
| Application number | US-201515306284-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 8, 2015 |
| Priority date | Jul 15, 2014 |
| Publication date | Apr 9, 2019 |
| Grant date | Apr 9, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
A battery pack includes a plurality of unit cells, each including a cylindrical battery case, and a connecting member (12) that connects the unit cells to each other. The battery case of each unit cell includes a bottom surface portion (30b) including a plurality of gas discharging sections (32) that open when an internal pressure of the unit cell reaches a predetermined pressure. The gas discharging sections (32) are separated from each other. The connecting member (12) is joined to a non-opening section (34) of the bottom surface portion (30b), the non-opening section (34) being disposed between the gas discharging sections (32).
First claim
Opening claim text (preview).
The invention claimed is: 1. An electricity storage device comprising: a plurality of storage cells, each including a cylindrical cell case; and a connecting member that connects the storage cells to each other, wherein the cell case of each storage cell includes a bottom surface portion including a plurality of gas discharging sections that open when an internal pressure of the storage cell reaches a predetermined pressure, the gas discharging sections being separated from each other, and wherein a distal end portion of the connecting member is joined to a non-opening section of the bottom surface portion of the cell case, the non-opening section being disposed between the gas discharging sections. 2. The electricity storage device according to claim 1 , wherein the number of gas discharging sections is 2 or 3, the gas discharging sections being arranged so as to be line-symmetric about a straight line that passes through a center of the bottom surface portion of the cell case or rotationally symmetric about the center of the bottom surface portion of the cell case, and wherein the connecting member is joined to the center of the bottom surface portion of the cell case. 3. The electricity storage device according to claim 2 , wherein the non-opening section, which is disposed between the gas discharging sections, is wider than the connecting member, and wherein the connecting member is arranged so as not to cover the gas discharging sections. 4. The electricity storage device according to 1 , wherein the bottom surface portion of the cell case includes loop-shaped grooves, and wherein sections surrounded by the grooves serve as the gas discharging sections. 5. The electricity storage device according to claim 4 , wherein the distal end portion of the connecting member is located at about a center of the non-opening section so as to be positioned between about middle points of the loop-shaped grooves.
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- What does patent US10256444B2 cover?
- A battery pack includes a plurality of unit cells, each including a cylindrical battery case, and a connecting member (12) that connects the unit cells to each other. The battery case of each unit cell includes a bottom surface portion (30b) including a plurality of gas discharging sections (32) that open when an internal pressure of the unit cell reaches a predetermined pressure. The gas disch…
- Who is the assignee on this patent?
- Sanyo Electric Co
- What technology area does this patent fall under?
- Primary CPC classification H01G9/12. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 09 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).