Flexible fusible link, systems, and methods
First Claim
1. A fusible link assembly connected to a battery cell, the fusible link assembly comprising:
- a fuse sheet made of electrically conductive material, wherein the fuse sheet has a planar body; and
a plurality of fusible links, each fusible link is connected to the fuse sheet,wherein each fusible link of the plurality of fusible links is configured to include at least one of an in-plane movement and an out-of-plane movement relative to the fuse sheet andwherein each fusible link of the plurality of fusible links opens when a current flow through each fusible link of the plurality of fusible links reaches a corresponding threshold current that is based on a cross-sectional area of each fusible link of the plurality of fusible links.
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Abstract
A fusible link includes a current collector element, a battery cell conductor pad, and at least one fusible conductor connecting the current collector element and the battery cell conductor pad. The current collector element can be a current collector conductor pad, a current collector conductor pad and a current collector plate, or a fuse sheet. A battery cell has an anode electrode and a cathode electrode, a separate fusible link is coupled to at least one of the battery cell electrodes. The battery cell conductor pad is electrically and mechanically attached to each battery cell electrode. The fusible conductor opens under excessive current flow, and has sufficient service loop length to allow relative in-plane and out-of-plane motions between the battery cell electrode and the current collector element. The fusible links can be applied to each of a plurality of battery cells included in a battery pack.
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Citations
12 Claims
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1. A fusible link assembly connected to a battery cell, the fusible link assembly comprising:
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a fuse sheet made of electrically conductive material, wherein the fuse sheet has a planar body; and a plurality of fusible links, each fusible link is connected to the fuse sheet, wherein each fusible link of the plurality of fusible links is configured to include at least one of an in-plane movement and an out-of-plane movement relative to the fuse sheet and wherein each fusible link of the plurality of fusible links opens when a current flow through each fusible link of the plurality of fusible links reaches a corresponding threshold current that is based on a cross-sectional area of each fusible link of the plurality of fusible links. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A fusible link assembly connected to a plurality of battery cells, the fusible link assembly comprising:
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a fuse sheet made of electrically conductive material; a plurality of fusible links, each fusible link is connected to the fuse sheet; and a current collector plate coupled to the fuse sheet, wherein each fusible link of the plurality of fusible links is configured to include at least one of an in-plane movement and an out-of-plane movement relative to the fuse sheet and located within the fuse sheet such that each fusible link of the plurality of fusible links aligns with corresponding openings in the current collector plate, and wherein each fusible link of the plurality of fusible links opens when a current flow through each fusible link of the plurality of fusible links reaches a corresponding threshold current that is based on a cross-sectional area of each fusible link of the plurality of fusible links. - View Dependent Claims (11, 12)
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Specification