Bag-Body Heat Exchanger for Battery Side-Surface Cooling
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Solution Overview
Problem
Conventional heat exchange apparatuses for batteries in electric vehicles fail to effectively cool heat generated from the side surfaces, leading to insufficient cooling performance.
Innovation Solution
A heat exchange apparatus comprising a bag body with an internal heat exchange flow path and a plate-shaped body with supply and recovery flow paths, featuring inlet and outlet ports, and boss portions for fitting, which allows cooling from both side surfaces of the battery and maintains contact even with battery expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling is performed only from the lower surface of the battery, then the structure is simple, but the cooling performance is insufficient because heat from the side surface cannot be suppressed
Solution Approach 1:
The invention transitions from single-point cooling at the lower surface to multi-dimensional cooling by adding side surface cooling capability. The heat exchange apparatus is configured to cool both the lower surface and side surfaces of the battery, effectively adding spatial dimensions to the cooling approach and significantly improving heat dissipation performance.
Solution Approach 2:
The cooling system is divided into multiple independent heat exchange units, each responsible for cooling specific surfaces of the battery. This segmentation allows the system to target different heat generation zones (lower surface and side surfaces) with dedicated cooling paths, improving overall cooling efficiency while maintaining manageable structural complexity.
2Reliability
If the battery expands during use, then the battery capacity increases, but the contact with the cooling apparatus may be lost leading to reduced cooling effectiveness
Solution Approach 1:
The heat exchange apparatus incorporates flexible or adjustable components that can dynamically adapt to battery expansion. The cooling system is designed to maintain reliable thermal contact with the battery surface even when the battery dimensions change during charge-discharge cycles, ensuring consistent cooling performance throughout the battery's operational life.
3Loss of energy
If conventional cooling paths are used, then the manufacturing is simple, but leakage and pressure loss occur reducing cooling efficiency
Solution Approach 1:
The invention introduces intermediate components such as flexible seals, gaskets, or adaptive contact elements between the cooling apparatus and battery surface. These intermediary elements serve as mediators that maintain reliable thermal contact while accommodating manufacturing tolerances and battery expansion, thereby reducing leakage and pressure loss without significantly complicating the manufacturing process.
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
Improves cooling performance by cooling from both side surfaces of batteries, maintaining contact during expansion, and reducing leakage and pressure loss, thus enhancing overall cooling efficiency.
Implementation Method 1
a bag body (2) having therein a heat exchange flow path (23) through which a heat exchange medium (L) flows
Implementation Method 2
a plate-shaped body (3) having therein a supply flow path (31) that communicates with one end of the heat exchange flow path (23) and supplies the heat exchange medium (L) to the heat exchange flow path (23), and a recovery flow path (32) that communicates with the other end of the heat exchange flow path (23) and recovers the heat exchange medium (L)
Data Source
AI summary
A heat exchange apparatus which includes a bag body having therein a heat exchange flow path through which a heat exchange medium flows and a plate-shaped body having therein a supply flow path. The supply flow path communicates with one end of the heat exchange flow path and supplies the heat exchange medium to the heat exchange flow path. The plate-shaped body also includes a recovery flow path that communicates with the other end of the heat exchange flow path and recovers the heat exchange medium. The bag body has an inlet port through which the heat exchange medium flows in and an outlet port through which the heat exchange medium flows out. The plate-shaped body has a first boss portion having an outlet hole that communicates with the supply flow path and allows the heat exchange medium to flow out, and a second boss portion having an inlet hole.