Battery Cell Case Dissoluble Opening for Uniform Electrolyte Distribution

Solution Overview

Problem

Existing lithium-ion batteries face challenges in achieving high unit capacity due to limited individual cell capacity, necessitating multiple cells connected in series and shunt, leading to complex connections, high costs, and non-uniform electrolyte distribution, which affects performance and safety.

Innovation Solution

A battery cell case with a dissolvable mechanism featuring an isolating and dissolvable assembly that seals and opens without mechanical intervention, allowing electrolyte cavities to communicate, facilitated by a pipeline system ensuring uniform electrolyte distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If multiple battery cells are connected in series and shunt to increase capacity, then the total battery capacity increases, but the connection structure becomes complicated and the manufacturing cost increases

Engineering Contradiction:

Improvebattery capacityVSAvoidconnection structure

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

Multiple battery cells are merged into a single integrated battery structure where the cells share a common electrolyte cavity. The isolating assembly separates individual cell interiors while the dissoluble assembly allows controlled communication with the common electrolyte cavity, eliminating the need for complex external connections and battery management systems.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The battery is segmented into multiple independent battery cells, each with its own isolating assembly that can be selectively opened. This segmentation allows each cell to function independently while being part of a unified system, simplifying the overall structure compared to traditional connected configurations.

Inventive Principle:

Principle #1Segmentation

2Quantity of substance

If multiple battery cells are connected in series and shunt to increase capacity, then the total battery capacity increases, but the manufacturing cost increases due to numerous connecting parts and battery management systems

Engineering Contradiction:

Improvebattery capacityVSAvoidmanufacturing cost

Core Design Contradiction:

Quantity of substanceVSEase of manufacture

Solution Approach 1:

Multiple battery cells are merged into a single integrated battery structure where the cells share a common electrolyte cavity. The isolating assembly separates individual cell interiors while the dissoluble assembly allows controlled communication with the common electrolyte cavity, eliminating the need for complex external connections and battery management systems.

Inventive Principle:

Principle #5Merging (Combining)

3Quantity of substance

If multiple battery cells are connected in series and shunt, then the total battery capacity increases, but the electrolyte distribution becomes non-uniform affecting performance and safety

Engineering Contradiction:

Improvebattery capacityVSAvoidelectrolyte distribution uniformity

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

Multiple battery cells are merged into a single integrated battery structure where the cells share a common electrolyte cavity. The isolating assembly separates individual cell interiors while the dissoluble assembly allows controlled communication with the common electrolyte cavity, eliminating the need for complex external connections and battery management systems.

Inventive Principle:

Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enables uniform electrolyte distribution among battery cells, improving performance consistency, reducing manufacturing complexity and cost, and enhancing safety by eliminating local overheating risks.

Implementation Method 1

when the dissoluble assembly contacts with electrolyte outside the battery cell case, the isolating assembly is opened because the dissoluble mechanism is dissolved

Methodology Applied

Scientific EffectDissolution: Solvation

Data Source

PatentUS12548827B2Battery cell case having a dissoluble mechanism and high-capacity battery having the structure

Publication Date: 2026.02.10 AMERICA NAT POWER STORAGE LLC

AI summary

Disclosed are a battery cell case having a dissoluble mechanism and a high-capacity battery. The battery cell case comprises at least one dissoluble mechanism, which comprises an isolating assembly and a dissoluble assembly; the battery cell case is provided with an opening, where the isolating assembly and the dissoluble mechanism are arranged sequentially in a direction away from the battery cell case; when the dissoluble assembly contacts with electrolyte outside the battery cell case, the isolating assembly is opened because the dissoluble mechanism is dissolved, thereby the interior of the battery cell case communicates with the exterior of the battery cell case. The high-capacity battery comprises at least two battery cells and an electrolyte storage pipeline, where the electrolyte storage pipeline comprises a main pipeline and a plurality of branch pipes, the branch pipes are in one-to-one correspondence to the openings of the battery cell cases.