Pouch Cell Temperature Control Mechanism for Fast Charging
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Solution Overview
Problem
High temperatures in battery cells, especially in high-energy applications like vehicles, reduce battery lifespan, necessitating effective temperature control mechanisms to maintain optimal performance and longevity.
Innovation Solution
A centrally located temperature control mechanism, which can be solid or hollow, with a beveled design and capable of expanding under pressure, is integrated into the battery cell to regulate temperature through a heat transfer fluid, providing even temperature distribution and pressure on the electrode stack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery temperature is increased during recharging, then the impedance decreases and fast charging is improved, but the battery lifespan decreases due to increased temperature over time
Solution Approach 1:
The temperature control mechanism is integrated into the battery cell structure beforehand, with fluid passages pre-configured to enable proactive temperature management. The system can pre-cool the battery before charging cycles and maintain optimal temperature during operation, preventing thermal damage before it occurs.
Solution Approach 2:
A heat transfer fluid serves as an intermediary medium between the battery components and the thermal environment. The fluid circulates through passages in the temperature control mechanism, absorbing and removing excess heat generated during charging and operation, thereby enabling fast charging without compromising battery lifespan.
2Temperature
If a temperature control mechanism is integrated into the battery cell, then temperature regulation is improved, but the device complexity increases
Solution Approach 1:
The temperature control mechanism performs multiple functions simultaneously: it provides thermal management through fluid circulation, maintains structural support for the battery components, and enables both heating and cooling operations. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in overall device complexity.
Solution Approach 2:
The temperature control mechanism is merged with the battery cell structure itself, with fluid passages integrated into the existing battery components rather than added as separate external systems. This integration approach consolidates multiple functions into a unified structure, minimizing the increase in device complexity while achieving effective temperature regulation.
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
This solution extends battery lifespan by evenly regulating temperature, maintaining performance in high-energy applications, and allowing for flexible packaging, while also enabling efficient heat management during charging and use.
Implementation Method 1
The temperature control mechanism can be solid or hollow, such as a cold plate
Implementation Method 2
regulate temperature through a heat transfer fluid
Data Source
AI summary
A battery cell that includes a plurality of anodes and a plurality of cathodes is provided. The battery cell has a pouch laminate disposed over the plurality of anodes and the plurality of cathodes along with a temperature control mechanism centrally located within the pouch laminate. The temperature control mechanism is disposed between anodes of the plurality of anodes and cathodes of the plurality of cathodes such that the temperature control mechanism is centrally located within battery cell. The temperature control mechanism can regulate a temperature of the battery cell while also regulate an amount of pressure applied to the plurality of anodes and cathodes. The temperature control mechanism can include passageways through which heat transfer fluid can pass that be used to regulate the temperature and the pressure.