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Overcharge protection systems having dual spiral disk features for prismatic lithium ion battery cells

A lithium-ion battery, battery cell technology, applied in the field called "OVER, can solve problems such as thermal runaway, rupture, and explosion of battery cells.

Active Publication Date: 2019-04-02
CPS TECH HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during this process, the battery cell can become overcharged, causing unstable conditions in and around the battery cell, potentially including thermal runaway, rupture, fire and / or explosion of the battery cell

Method used

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  • Overcharge protection systems having dual spiral disk features for prismatic lithium ion battery cells
  • Overcharge protection systems having dual spiral disk features for prismatic lithium ion battery cells
  • Overcharge protection systems having dual spiral disk features for prismatic lithium ion battery cells

Examples

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Embodiment Construction

[0030]One or more specific embodiments are described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation are described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developer's specific goals, such as compliance with system-related and business-related Constraints, which may vary from implementation to implementation. Furthermore, it should be understood that such development efforts might be complex and time consuming, but would nevertheless be a routine undertaking of design, construction, and fabrication for those of ordinary skill having the benefit of this disclosure.

[0031] As set forth above, when a Li-ion battery cell becomes overcharged, an unstable condition (e.g., thermal runaway, cell rupture, cell fire, and / or cell explosion)...

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PUM

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Abstract

A prismatic lithium ion battery cell includes a packaging having a cover. The cover includes: a first spiral disk feature disposed below a first terminal pad; a second spiral disk feature disposed below a second terminal pad; a first reversal disk disposed below the first spiral disk feature; and a second reversal disk disposed below the second spiral disk feature. The first and second reversal disks are configured to deflect upwards to displace the first and second spiral disk features to contact the first and second terminal pads, respectively, in response to a pressure within the packagingbeing greater than a predefined pressure threshold and form an external short-circuit between the first and second terminal pads via the first and second spiral disk features. Subsequently, a portionof the power assembly fails in response to the external short-circuit and interrupts current flow between the first and second terminal pads.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit to U.S. Provisional Application No. 62 / 369,718, filed August 1, 2016, entitled "OVERCHARGE PROTECTION DEVICES FORPRISMATIC CELLS," and to U.S. Provisional Application No. 62 / 369,718, filed August 1, 2016, entitled "OVERCHARGE PROTECTION DEVICES FOR CELLS WITH NEUTRAL CANS", which is hereby incorporated by reference in its entirety for all purposes. Background technique [0003] The present disclosure relates generally to the field of batteries and battery modules. More specifically, the present disclosure relates to overcharge protection systems for prismatic Li-ion battery cells. [0004] This section is intended to introduce the reader to various aspects of technology that may be related to aspects of the disclosure described below. This discussion is considered helpful in providing the reader with background information in order to better understand aspects of the disclos...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M10/0525H01M10/0587H01M2/34H01M50/147H01M50/176H01M50/209H01M50/271H01M50/55H01M50/553H01M50/574H01M50/588H01M50/593
CPCH01M10/0525H01M50/15H01M50/572H01M50/553H01M50/55H02J7/00302H01M50/531H01M50/566H01M50/30H01M10/44H02J7/0045H02H7/18H01M10/0587H01M2200/20H01M50/325H01M50/578H01M50/588H01M50/147H01M50/271H01M50/209H01M50/593H01M50/574H01M50/176Y02E60/10H01M2200/103H01M2220/10Y02T10/70H01M50/103H01M50/581H01M50/543H01M50/20H02J7/0031
Inventor 张旭刚
Owner CPS TECH HLDG LLC
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