Pouch type rechargeable battery
a rechargeable battery and pouch-type technology, applied in the field can solve the problems of lowering the efficiency of the battery pack manufacturing process, fire or explosion of pouch-type rechargeable batteries, etc., and achieve the effect of improving workability and easy emitting gas
Inactive Publication Date: 2009-10-15
SAMSUNG SDI CO LTD
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- Application Information
AI Technical Summary
Benefits of technology
The present invention is about a new type of rechargeable battery that can easily release gas when overcharged or exposed to high temperatures. The design of this battery improves its workability during manufacturing and installation by adjusting the width of the sealing sections of its pouch case. The invention includes an electrode assembly and a pouch case with a sealing part formed around the space where the electrodes are placed. The sealing part has side sealing sections, and the width of each section is less than the depth of the space. This design helps to prevent the battery from exploding or catching fire due to overcharging or high temperatures.
Problems solved by technology
At this time, edges of the side sealing sections 24a may scratch or dent the battery pack, thereby lowering the efficiency of a battery pack manufacturing process.
Accordingly, the temperature and internal pressure of the pouch type rechargeable battery may rise, thereby causing a fire or an explosion of the pouch type rechargeable battery.
Method used
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Embodiment Construction
[0025]The pouch type rechargeable battery of the present invention comprises a pouch case that has side sealing sections in which the widths of the side sealing sections are adjusted so gas generated in the battery can easily be emitted when the pouch type rechargeable battery is overcharged or exposed to a high-temperature atmosphere. The present invention improves the molding process of the pouch type rechargeable battery and the installation of the pouch type rechargeable battery in the battery pack.
[0026]FIG. 2a is a plan view of a pouch type rechargeable battery according to an exemplary embodiment of the present invention. FIG. 2b is a perspective view of the pouch type rechargeable battery shown in FIG. 2a.
[0027]Referring to FIG. 2a and FIG. 2b, the pouch type rechargeable battery comprises an electrode assembly 110 and a pouch case 120 for receiving the electrode assembly 110. Although they are not shown in FIG. 2a and FIG. 2b, the electrode assembly 110 may include a first...
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Abstract
A pouch type rechargeable battery that comprises an electrode assembly comprising a first electrode, a second electrode, and a separator interposed between the first and second electrodes is disclosed. The battery further comprises a pouch case comprising a case cover and a case body that is formed with a space for receiving the electrode assembly therein and a sealing part that is formed around the space. The sealing part comprises side sealing sections where the width of each side sealing section is less than the depth of the space.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 11 / 239,076, filed on Sep. 30, 2005, and claims priority to and the benefit of Korean Patent Application No. 10-2004-0078189, filed on Oct. 1, 2004, which is hereby incorporated by reference for all purposes as if fully set forth herein.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a pouch type rechargeable battery. In particular, the present invention relates to a pouch type rechargeable battery that can emit gas that is generated therein when the rechargeable battery is overcharged or exposed to a high-temperature atmosphere and can also improve workability when installed in a battery pack.[0004]2. Description of the Prior Art[0005]Recently, as portable electronic devices have become increasingly compact and lightweight, the batteries that are used as power sources for these devices are being fabricated in compact siz...
Claims
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IPC IPC(8): H01M2/08H01M50/126
CPCH01M2/0275Y02E60/122H01M10/0525H01M2/08Y02E60/10H01M50/126H01M50/105H01M50/129H01M50/183H01M10/052
Inventor LEE, HYUNG BOK
Owner SAMSUNG SDI CO LTD