Battery Cooling Jacket for Upper Surface Heat Dissipation
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Solution Overview
Problem
Existing vehicle battery cooling structures face challenges in effectively cooling the upper portion of a battery unit due to the presence of a floor panel above the battery unit, which limits the gap for air flow and makes it difficult to cool the upper surface efficiently.
Innovation Solution
A vehicle battery cooling structure comprising a vehicle body with a floor panel and a cooling jacket attached to the upper surface of the battery case, utilizing a combination of air flow and liquid cooling to effectively cool the upper portion of the battery unit, where the cooling jacket is designed to enhance heat transfer with a thermally conductive material and a pliable sheet member for improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a floor panel is positioned close to the battery unit, then the vehicle body structure is compact, but the gap for air flow is reduced making it difficult to cool the upper portion of the battery unit
Solution Approach 1:
A cooling jacket is introduced as an intermediary component between the battery unit and the floor panel. This cooling jacket includes a coolant passage that allows coolant to flow through, serving as a mediator to transfer heat from the battery upper surface to the coolant, thereby enabling effective cooling of the battery upper portion without requiring a large gap between the floor panel and battery unit
Solution Approach 2:
The invention employs a liquid cooling system by introducing a cooling jacket with coolant passages. Coolant flows through these passages to absorb heat from the battery upper surface, utilizing hydraulic principles to achieve efficient heat removal from the battery unit when air flow is insufficient
2Device complexity
If air flow is used to cool the battery unit, then the cooling system is simple, but the upper portion of the battery unit cannot be cooled effectively due to limited gap space
Solution Approach 1:
The invention transitions from pure air cooling to a liquid cooling approach by installing a cooling jacket with coolant passages. The coolant circulates through the jacket to absorb heat from the battery upper surface, providing effective cooling of the upper portion without relying solely on air flow through the limited gap
Solution Approach 2:
The cooling system is segmented into two distinct cooling paths: air cooling for the lower portion of the battery unit through the gap between the battery and floor panel, and liquid cooling for the upper portion through the cooling jacket. This segmentation allows each cooling method to operate optimally in its designated zone
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 effective cooling of the upper portion of the battery unit, even when air flow is limited, by using a liquid cooling system that enhances heat dissipation and maintains efficient cooling performance across a wider area, thereby ensuring optimal battery performance.
Implementation Method 1
The cooling jacket is attached to an upper surface of the battery case that houses the battery
Implementation Method 2
utilizing a combination of air flow and liquid cooling to effectively cool the upper portion of the battery unit
Data Source
AI summary
A vehicle battery cooling structure is provided with a vehicle body, a battery unit and a cooling jacket. The vehicle body includes a floor panel and a vehicle body frame member. The battery unit is attached to the vehicle body frame member. The battery unit is arranged below the floor panel. The battery unit includes a battery case and a battery. The cooling jacket is attached to an upper surface of the battery case that houses the battery.