Battery pole piece and battery
By setting blind holes and filling them with a filler layer in the active material layer of the battery electrode, the problem of low interfacial adhesion in multilayer coating structures is solved, thereby improving the ion transport efficiency and electrochemical performance of the battery.
CN224609860UActive Publication Date: 2026-08-07JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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Patent Information
- Application Number
- CN202521625137.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2026-08-07
- Estimated Expiration
- 2035-07-31
AI Technical Summary
Technical Problem
Multi-layer coated battery electrodes suffer from problems such as interlayer splitting, conduction obstruction, and low capacity due to differences in the properties of different coatings, which affect battery performance and lifespan.
Method used
Blind holes are formed in the active material layer of the battery electrode and filled with a filler layer. The blind holes penetrate the contact interface of adjacent coatings. The filler layer includes an adhesive layer and a conductive layer or a lithium replenishment layer, which enhances the interfacial bonding force and optimizes ion transport.
Benefits of technology
It improves ion and electron transport efficiency, reduces internal resistance, alleviates polarization, and enhances battery cycle life and lifespan.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to battery technology field, concretely provides a kind of battery pole piece and battery.The battery pole piece includes current collector and active material layer.Active material layer is arranged on at least one side surface in the thickness direction of current collector, and active material layer includes multiple coating layers stacked along the thickness direction.Coating layer is provided with blind hole on at least one side surface of current collector, and the orifice of blind hole is arranged on the surface away from current collector in the thickness direction of active material layer, and blind hole is through the contact interface of adjacent coating layers in the thickness direction.Blind hole is provided with filling layer inside.The utility model sets up blind hole and filling layer, solves the problem that the interface bonding force of different coating layers in multilayer coated active material layer is low, and ion transmission efficiency is low.Improve the problem that active material layer coating is thicker and prolongs the transmission distance of ion and electron, leads to dynamics slow, internal resistance increases and polarization exacerbates.
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