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Overcharge protection system with double helical disc feature for prismatic lithium-ion battery cells

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

Active Publication Date: 2022-07-08
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 system with double helical disc feature for prismatic lithium-ion battery cells
  • Overcharge protection system with double helical disc feature for prismatic lithium-ion battery cells
  • Overcharge protection system with double helical disc feature for prismatic lithium-ion battery cells

Examples

Experimental program
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Embodiment Construction

[0030]One or more specific embodiments will be described below. In an effort to provide a concise description of these examples, not all features of an actual implementation are described in this 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 appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking of design, construction, and manufacture for those of ordinary skill having the benefit of this disclosure.

[0031] As set forth above, unstable conditions (eg, thermal runaway, cell rupture, cell fire, and / or cell explosion) that result in and around the cell when a lithi...

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PUM

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Abstract

A prismatic lithium-ion battery cell includes a package with a lid. The cover includes: a first spiral disk feature disposed under the first terminal pad; a second spiral disk feature disposed under the second terminal pad; a first reverse circle disposed under the first spiral disk feature a disk; and a second reverse disk disposed below the second helical disk feature. The first and second opposing pucks are configured to deflect upwardly to displace the first and second helical puck features to contact the first and second terminal pads, respectively, in response to pressure within the package being greater than a predefined pressure threshold , and an external short is formed between the first and second terminal pads via the first and second spiral disk features. Subsequently, a portion of the power assembly fails in response to an external short circuit and interrupts current flow between the first and second terminal pads.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to and the benefit of US Provisional Application No. 62 / 369,718, filed on August 1, 2016, entitled "OVERCHARGE PROTECTION DEVICES FORPRISMATIC CELLS," and claims the title of "OVERCHARGE PROTECTION," filed on August 1, 2016 PRIORITY AND BENEFITS OF US Provisional Application No. 62 / 369,720 "DEVICES FOR CELLS WITH NEUTRAL CANS", which is hereby incorporated by reference in its entirety for all purposes. Background technique [0003] The present disclosure generally relates to the field of batteries and battery modules. More specifically, the present disclosure relates to overcharge protection systems for prismatic lithium-ion battery cells. [0004] This section is intended to introduce the reader to various aspects of technology that may be related to the various aspects of the present disclosure described below. This discussion is believed to be helpful in providing the reader with back...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/186H01M50/30H01M50/188H01M10/0525H01M10/0587H01M50/147H01M50/176H01M50/209H01M50/271H01M50/55H01M50/553H01M50/574H01M50/588H01M50/593
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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