Secondary battery
AssigneeSamsung SDI Co., Ltd.
InventorSungho Hong
Life of this patent
Estimating the term…
Abstract
A secondary battery with improved heat transmitting efficiency and coupling force between an electrode tab and a temperature protection device. The secondary battery includes an electrode assembly including a first electrode having a first electrode tab extending to one side, a second electrode having a second electrode tab extending to one side, and a separator disposed between the first electrode and the second electrode, a pouch that includes a terrace part and a temperature protection device mounted on the terrace part and connected to the first electrode tab. The temperature protection device includes a first connection part connected to a first extension part, a transmission part in contact with the first electrode tab and connected to the first connection part, and a second connection part connected to the transmission part.
Claims20
A secondary battery, comprising:
- an electrode assembly including a first electrode having a first electrode tab extending to one side, a second electrode having a second electrode tab extending to one side, and a separator disposed between the first electrode and the second electrode;
- a pouch accommodating the electrode assembly and including a terrace part from which the first electrode tab and the second electrode tab are drawn;
- and
- a temperature protection device comprising a positive temperature coefficient device and a bi-metal disk, wherein the temperature protection device is mounted on the terrace part and connected to the first electrode tab,
- wherein a first extension part extends and is bent at an end of the first electrode tab, and the temperature protection device includes a first connection part connected to the first extension part, a transmission part having a bottom surface making contact with a top surface of the first electrode tab and connected to the first connection part, and a second connection part connected to the transmission part, wherein the positive temperature coefficient device is connected to the first electrode tab, wherein the second connection part makes contact with the first connection part at a contact point, wherein the second connection part makes contact with the bi-metal disk, and wherein the first connection part extends to the inside of the transmission part and is partially exposed to a bottom surface of the transmission part.
A secondary battery comprising;
- an electrode assembly having a first and second electrode tab that extend to one side;
- a pouch that receives the electrode assembly that has a terrace part that receive the first and second electrode tab;
- a temperature protection device comprising a positive temperature coefficient device and a bi-metal disk, wherein the temperature protection device is mounted on the terrace part and connected to the first electrode tab;
- wherein the first electrode tab includes a first extension part at the end of the first electrode tab and wherein the first extension tab is bent so as to be positioned over the end of the first electrode tab and wherein the first extension part is coupled to the temperature protection device, wherein the temperature protection device includes a first connection part connected to the first extension part, a transmission part having a bottom surface making contact with a top surface of the first electrode tab and connected to the first connection part, and a second connection part connected to the transmission part, wherein the positive temperature coefficient device is connected to the first electrode tab, and wherein the second connection part makes contact with the first connection part at a contact point, wherein the second connection part makes contact with the bi-metal disk, wherein the first connection part extends to the inside of the transmission part and is partially exposed to a bottom surface of the transmission part.
Dependencies are inferred from the claim text.