4results about How to "Avoid internal short circuit" patented technology

This application provides a battery, including: a casing; a cover assembly connected to the casing and enclosing a receiving space; the cover assembly includes a cover plate and a plurality of terminals; an electrode assembly disposed within the receiving space, the electrode assembly including a bare cell and a plurality of adapter tabs; a plurality of tabs extending from the end face of the bare cell near the cover assembly, each tab being electrically connected to a corresponding adapter tab; the electrode assembly being electrically connected to a corresponding terminal in the cover assembly via the adapter tabs; wherein, the cover assembly further includes a lower insulating member disposed between the cover plate and the adapter tabs, the surface of the lower insulating member near the adapter tabs having a plurality of positioning protrusions protruding toward the adapter tabs, the plurality of positioning protrusions being located on the same side of the plurality of adapter tabs along the width direction of the cover plate, and each adapter tab corresponding to at least one positioning protrusion; the positioning protrusions are used to limit the position of the corresponding adapter tab in the width direction of the cover plate. The battery provided by this application helps to enhance the safety of a single battery cell.

The invention discloses a cylindrical battery and a power utilization device, and belongs to the technical field of new energy materials. By adopting an in-situ polymerization technology, a compact and continuous quasi-solid electrolyte network is constructed in the cylindrical roll core, so that the safety pain points that a traditional liquid lithium ion battery is easy to leak and inflammable and explosive are fundamentally solved, and meanwhile, the technical bottlenecks that a solid-solid interface of a solid-state battery is poor in contact and large in impedance are overcome; according to the battery system, atomic-scale close contact of the electrolyte and the electrode particles is realized, the intrinsic safety and the energy density of the battery are remarkably improved while high ionic conductivity is ensured, and the battery system is particularly suitable for the power and energy storage fields with extremely high safety requirements.

This invention relates to the field of lithium battery technology and provides a cylindrical lithium battery, comprising: a cylindrical casing having an open end and a closed end, wherein a first through hole is formed at the center of the end face of the closed end; a cell assembly disposed within the casing, including a first electrode near the closed end and a second electrode near the open end, the first electrode and the second electrode having different electrical polarities; a first current collector disposed within the casing and connected to the first electrode of the cell assembly, wherein a boss extending from the first through hole to the outside of the casing is provided at the center of the first current collector; a first electrode lead-out end cap disposed outside the casing and connected to the boss; and a second electrode lead-out end cap disposed at the open end of the casing, connecting the second electrode of the cell assembly and the casing, wherein the second electrode lead-out end cap and the casing are sealed together. The cylindrical lithium battery provided by this invention avoids battery self-discharge and internal short circuits caused by metal dust generated during the battery sealing process.

The application relates to the technical field of battery processing, in particular to a battery and a battery pack. The battery comprises: a battery cell; a tab connected to the battery cell; a sleeve structure comprising an insulating sleeve and a reinforcing rib, the insulating sleeve is sleeved on the tab, and the reinforcing rib is connected to the insulating sleeve. The reinforcing rib is used for providing radial restoring force, so that the insulating sleeve is tightly attached to the tab after being sleeved on the tab. The insulating sleeve is sleeved on the tab, and the reinforcing rib provides additional radial restoring force, so that the insulating sleeve can be tightly attached to the tab after being sleeved on the tab. The multiple tabs are shaped and regularized, the tabs are prevented from being folded and inserted during the assembly process, and after the assembly of the battery cell is completed, the insulating sleeve is recovered, the tabs are insulated and isolated, the tabs are prevented from contacting the pole pieces to cause internal short circuit, the problems of tab redundant insertion and internal short circuit failure are effectively solved, and the safety and reliability of the battery cell are improved.