Non-arithmetic progression pole piece die cutting structure
By adopting a non-aromatous series of die-cut structure of the electrode ear in a square lithium iron phosphate aluminum shell battery, the number and distribution density of the electrode ears are increased, and the battery performance and safety hazards caused by the electrode breakage are solved, and the battery capacity and internal impedance are normalized.
CN222654009UActive Publication Date: 2025-03-21DO FLUORIDE NEW ENERGY TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202420799498.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-17
AI Technical Summary
Technical Problem
The existing square lithium iron phosphate aluminum shell batteries are prone to break after being wound, resulting in lower ACR, DCR and capacity of some batteries, which pose performance and safety risks.
Method used
The non-aromatous series of pole ear die-cut structure is adopted, and the original pole ear and new pole ear are provided on the outer side of the roll core to ensure that there are two pole ears per turn, increasing the number and distribution density of pole ears.
Benefits of technology
By adding pole ears, ensure the battery capacity is at a normal level, improve ACR and DCR, ensure the normal use and performance of the battery, and prevent the outflow of defective products.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a non-arithmetic progression pole piece die cutting structure which comprises a roll core, original tabs are arranged on the outer side of the roll core in a die cutting mode, and newly-added tabs are arranged between the original tabs in a die cutting mode. According to the structure, a non-arithmetic progression tab arrangement mode is adopted, so that each of the first to fourth circles in the roll core has two tabs, the capacity of the battery is ensured to be at a normal level of the battery, the ACR and DCR of the battery are improved to a certain extent due to the increase of the tabs, the normal use of the battery is ensured, and defective products are prevented from flowing out.
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