Pouch type battery cell

• US 11,031,660 B2
• Filed: 01/30/2019
• Issued: 06/08/2021
• Est. Priority Date: 10/24/2018
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Lee, SangJoon, Lee, Yoon Ji, Ahn, Seung Ho, Kim, DongHui
• Primary Examiner(s): Raymond, Brittany L
• Application Number:
  US16/262,207
• Publication Number:
  US 20200136122A1
• Time in Patent Office: 860 Days
• CPC Class Codes: H01M 10/0413 Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/105 Pouches or flexible bags
• CPC Class Codes: H01M 50/536 characterised by the method of fixing the leads to the electrodes, e.g. by welding
• CPC Class Codes: H01M 50/54 Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
• CPC Class Codes: H01M 50/548 on opposite sides of the cell
• CPC Class Codes: H01M 50/55 on the same side of the cell
• CPC Class Codes: H01M 50/553 Terminals adapted for prismatic, pouch or rectangular cells
• CPC Class Codes: H01M 50/557 Plate-shaped terminals
• CPC Class Codes: H01M 50/566 by welding, soldering or brazing
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A pouch type battery cell is provided. The battery cell includes a negative electrode and a positive electrode that overlap each other while spaced apart from each other. The negative electrode includes a pair of negative terminals that protrude from a first side of opposite ends of the negative electrode. Additionally, the positive electrode includes a pair of positive terminals that protrude from a second side of opposite ends of the positive electrode.

Claims

1. A pouch type battery cell, comprising:

a negative electrode and a positive electrode overlapping each other while spaced apart from each other,

wherein the negative electrode includes a first end and a second end, and a pair of negative terminals that protrude from a first side of each of the first end and the second end of the negative electrode,

wherein the positive electrode includes a first end and the second end, and a pair of positive terminals that protrude from a second side of each of the first end and the second end of the positive electrode, and

wherein the pouch type battery cell further includes;

negative lead tabs having a first end connected to the negative terminals and a second end overlapping the positive terminals while spaced apart from each other; and

positive lead tabs having a first end connected to the positive terminals and a second end overlapping the negative terminals while spaced apart from each other.

2. The pouch type battery cell according to claim 1, wherein an insulator is formed to insulate between the positive lead tabs and the second ends of the negative terminals, and between the negative lead tabs and the second ends of the positive terminals.

3. The pouch type battery cell according to claim 1, wherein the negative electrode includes a plate-shaped negative electrode portion and the positive electrode includes a plate-shaped positive electrode portion.

4. The pouch type battery cell according to claim 3, wherein the pouch type battery cell further includes:

a separator disposed between the negative electrode portion and the positive electrode portion to overlap the negative electrode portion and the positive electrode portion while spaced apart from each other.

5. The pouch type battery cell according to claim 4, wherein the pouch includes:

an electrode accommodating portion for accommodating the positive electrode portion and the negative electrode portion that are overlapped with each other;

a pair of negative terminal accommodating portions disposed at a first side of opposite ends of the pouch to accommodate the pair of negative terminals; and

a pair of positive terminal accommodating portions disposed at a second side of the opposite ends of the pouch to accommodate the pair of positive terminals.

6. The pouch type battery cell according to claim 5, wherein the negative lead tabs protrude outside of the pouch by passing through the negative terminal accommodating portions, and the positive lead tabs protrude outside of the pouch by passing through the positive terminal accommodating portions.

7. The pouch type battery cell according to claim 2, further comprising:

a pouch for accommodating the pair of positive terminals and the pair of negative terminals therein.