Flexible voltage nested battery module design

A technology for battery modules and battery packs, which is applied to secondary batteries, battery pack parts, battery boxes/coatings, etc. It can solve the problem of insufficient heat dissipation of battery modules, connection of multiple single modules, and lack of stable structure of battery modules And other issues

Active Publication Date: 2011-05-11
A123 SYSTEMS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Conventional battery modules lack a robust construction in terms of how the cylindrical cells 104 are mechanically and electrically connected to surrounding components
In addition, conventional battery modules have the disadvantages of insufficient heat dissipation and the inability to effectively connect multiple individual modules together

Method used

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  • Flexible voltage nested battery module design
  • Flexible voltage nested battery module design
  • Flexible voltage nested battery module design

Examples

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Embodiment Construction

[0059] Aspects of the invention provide a flexible multi-voltage battery module having multiple cells nested together. According to different embodiments, battery cells in a module may be efficiently packaged and may utilize different configurations to provide different output voltages. Additionally, battery modules can be packaged together using an interlocking mechanism. Exemplary embodiments of the present invention also provide battery cells welded to bus bars in an efficient and robust manner.

[0060] figure 2 is a top view showing the construction of battery cells 204 in a battery module 202 according to one or more exemplary embodiments of the present invention. As shown, cells 204 are arranged in a nested fashion such that centers of adjacent cells (eg, centers 208a, 208b, 208c) form an equilateral triangle (eg, triangle 210). In this way, the gap 206 between the battery cells is minimized. With this nested configuration, about 85% of the inter-module interspace,...

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Abstract

Exemplary embodiments of the present invention provide flexible, multi-voltage battery modules having multiple cells that are nested together. The cells can be, for example, cylindrical lithium ion cells. To increase cell package density, the cells can be disposed in a nested configuration so that adjacent cell centers form equilateral triangles. The cells can be placed in a housing or case with interlocking tabs that allow multiple modules to be connected together. Within a module, the cells can be connected in different configurations by buss bars at the top and the bottom of the battery cells. The different configurations may provide different voltages for the module.

Description

[0001] cross reference [0002] This application is a non-provisional application of US Provisional Application No. 61 / 044,784, filed April 14, 2008. technical field [0003] Exemplary embodiments according to the present invention relate generally to battery module designs, and more particularly, to flexible voltage nested battery modules having multiple electrochemical battery cells. Background technique [0004] A battery module may include a plurality of electrochemical cells grouped together. The cells may, for example, be cylindrical lithium-ion cells each having two power terminals (a positive terminal and a negative terminal) arranged at two opposite ends of the cell. The two power terminals are typically made of different materials. For example, power terminals are often made of aluminum (positive) and copper (negative) or nickel-plated steel (negative). [0005] figure 1 is a top view of a battery module 102 having cylindrical cells 104 arranged in a matrix con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M2/30H01M2/10H01M50/213H01M50/227H01M50/262H01M50/284H01M50/505H01M50/522H01M50/528
CPCH01M10/625H01M10/6553H01M10/6556H01M10/6567H01M10/643H01M10/6554H01M10/613B23K26/32B23K26/323B23K26/242B23K2101/34B23K2101/38B23K2103/04B23K2103/10B23K2103/12B23K2103/18B23K2103/22Y02E60/10H01M50/213H01M50/522H01M50/284H01M50/505H01M50/227H01M50/262H01M50/50H01M50/543
Inventor M·伊加茨B·鲁特科夫斯基S·巴特J·霍斯特勒B·穆尔海德
Owner A123 SYSTEMS LLC
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