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US 12,640,439 B2Granted
Battery core and battery
AssigneeBYD Company Limited
InventorsXinyue Wang, Wansong Yuan, Dongjun Deng, Kefeng He
Life of this patent
Estimating the term…
Abstract
A battery core and a battery are provided. The battery core includes a plate, a separator, a tab, and an insulating support portion. The tab is connected with the plate. The insulating support portion is arranged on an end of the plate and supports the tab. The tab extends through the insulating support portion and extends outward.
Claims16
A battery core, comprising:
- a plate, a separator, and a tab, wherein the tab is connected with the plate;
- and
- an insulating support portion, arranged on an end of the plate and supporting the tab,
- wherein the tab extends through the insulating support portion and extends outward,
- wherein the plate comprises a positive plate;
- the insulating support portion is arranged on an end of the positive plate;
- and a free end surface of the insulating support portion exceeds an end surface on a same side of the separator,
- wherein an upper end surface of the insulating support portion exceeds an upper end surface of the separator such that, when the tab is bent, the tab is separated from the separator and prevented from squeezing the separator, and
- wherein a height Ht of the insulating support portion configured to support the tab connected with the positive plate, a thickness Dt of the insulating support portion between the separator and the tab connected with the positive plate, a bending angle α of the tab, and a thickness x of the separator satisfy:
- Ht≥(100 μm+x−Dt)/cos α, wherein Dt and x are non-zero numbers, and 0<α<90°.
7 more elements
A battery, comprising:
- a battery core, wherein the batter core comprises:
- a plate, a separator, and a tab, wherein the tab is connected with the plate;
- and
- an insulating support portion, arranged on an end of the plate and supporting the tab,
- wherein the tab extends through the insulating support portion and extends outward,
- wherein the plate comprises a positive plate;
- the insulating support portion is arranged on an end of the positive plate;
- and a free end surface of the insulating support portion exceeds an end surface on a same side of the separator,
- wherein an upper end surface of the insulating support portion exceeds an upper end surface of the separator such that, when the tab is bent, the tab is separated from the separator and prevented from squeezing the separator, and
- wherein a height Ht of the insulating support portion configured to support the tab connected with the positive plate, a thickness Dt of the insulating support portion between the separator and the tab connected with the positive plate, a bending angle α of the tab, and a thickness x of the separator satisfy:
- Ht≥(100 μm+x−Dt)/cos α, wherein Dt and x are non-zero numbers, and 0<α<90°.
8 more elements
Dependencies are inferred from the claim text.