Rechargeable Battery Common Negative Terminal

Solution Overview

Problem

Existing rechargeable batteries require complex connection structures and higher manufacturing costs when multiple batteries are connected in series or parallel to achieve high capacity and power, which complicates the design and increases costs.

Innovation Solution

A rechargeable battery design featuring an electrode assembly with two assembly portions connected through a common negative electrode terminal and separate positive electrode terminals, simplifying the connection structure and reducing manufacturing costs while maintaining high capacity and power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If multiple batteries are connected in series or parallel to achieve high capacity and power, then the battery performance is improved, but the connection structure becomes complex and manufacturing costs increase

Engineering Contradiction:

Improvebattery powerVSAvoidconnection structure

Core Design Contradiction:

PowerVSDevice complexity

Solution Approach 1:

The patent combines multiple battery cells into a single integrated battery pack with a unified housing and shared terminal structure. Multiple positive electrodes and negative electrodes are assembled together with separators between them, forming one cohesive battery unit that achieves high capacity and power without requiring complex external connections between separate batteries.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent designs a universal terminal structure where a single terminal group serves multiple functions - accommodating both series and parallel connections through a standardized configuration. The terminal group includes multiple electrode terminals that can be selectively connected to achieve different voltage and capacity configurations, eliminating the need for separate connection structures for each battery.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Quantity of substance

If multiple batteries are connected in series or parallel to achieve high capacity and power, then the battery performance is improved, but manufacturing costs increase

Engineering Contradiction:

Improvebattery capacityVSAvoidmanufacturing cost

Core Design Contradiction:

Quantity of substanceVSEase of manufacture

Solution Approach 1:

The patent combines multiple battery cells into a single integrated battery pack with a unified housing and shared terminal structure. Multiple positive electrodes and negative electrodes are assembled together with separators between them, forming one cohesive battery unit that achieves high capacity and power without requiring complex external connections between separate batteries.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent designs a universal terminal structure where a single terminal group serves multiple functions - accommodating both series and parallel connections through a standardized configuration. The terminal group includes multiple electrode terminals that can be selectively connected to achieve different voltage and capacity configurations, eliminating the need for separate connection structures for each battery.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9406968B2Rechargeable battery

Publication Date: 2016.08.02 SAMSUNG SDI CO LTD

AI summary

A rechargeable battery including an electrode assembly that is chargeable and dischargeable, the electrode assembly including a first assembly portion and a second assembly portion; a case accommodating the electrode assembly therein; a cap plate coupled to the case; and an electrode terminal group connected to the electrode assembly through a lead tab, the electrode terminal group being in a terminal hole of the cap plate, wherein the electrode terminal group includes three electrode terminals that are selectively connected to first electrodes and second electrodes of the first assembly portion and the second assembly portion.