Horizontal Battery Pack Layout for Faster Thermal Control
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Solution Overview
Problem
The existing battery pack designs face challenges in stabilizing battery temperature due to external environmental influences, leading to inefficient temperature control and performance issues, as the temperature of the battery is heavily affected by the case temperature, resulting in unstable performance and increased energy consumption.
Innovation Solution
A battery pack design with a battery module arranged horizontally within a case, where the horizontal size is larger than the vertical size, incorporating a heat exchange member and a specific ratio of sizes to minimize air reserve and enhance temperature control efficiency, forming a heat insulation layer between the battery module and the case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the battery module is arranged with large horizontal size and small vertical size (L1/L2 ratio between 70%-95%), then the temperature control response speed is improved and energy efficiency is enhanced, but the space utilization in vertical direction is constrained
Solution Approach 1:
The battery module transitions from traditional vertical stacking to horizontal arrangement, changing the primary dimension of battery placement from vertical to horizontal. This dimensional shift allows the battery cells to be arranged side-by-side rather than stacked, reducing vertical height while increasing horizontal footprint, thereby improving temperature control response without sacrificing total battery capacity.
Solution Approach 2:
The patent optimizes the L1/L2 size ratio parameter to fall within 70%-95%, creating a specific geometric configuration that balances horizontal and vertical dimensions. This parameter optimization ensures that the battery module maintains an appropriate aspect ratio for effective thermal management while accommodating the horizontal arrangement strategy.
2Use of energy by moving object
If the air reserve between battery module and case is minimized, then the temperature control energy consumption is reduced, but the heat insulation effect is weakened
Solution Approach 1:
The patent introduces a heat exchange member as an intermediary component positioned between the battery module and the case. This mediator facilitates controlled thermal interaction, allowing efficient heat transfer when cooling is needed while providing thermal isolation when external temperature fluctuations occur, thus resolving the contradiction between energy consumption and heat insulation.
Solution Approach 2:
The heat exchange member acts as a flexible thermal interface that can adaptively manage heat flow. By minimizing air gaps while incorporating this thermal management component, the system achieves both low energy consumption through reduced thermal mass and adequate heat insulation through the engineered interface between battery and case.
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 design improves the response speed and energy efficiency of the temperature control system, reducing the mutual influence of the case and battery module temperatures, thereby maintaining optimal battery performance and extending service life.
Implementation Method 1
the battery pack further includes a heat exchange member, and the heat exchange member is disposed on one side of the battery module in the vertical direction
Implementation Method 2
a small amount of air forms a heat insulation layer between a battery module and the case, which reduces the mutual influence of the case and the battery module on each other's temperatures
Data Source
AI summary
The present application provides a battery pack, a method for producing a battery pack and a vehicle. The vehicle includes a vehicle body and a battery pack, the battery pack being disposed in the vehicle body. The battery pack includes a battery module and a case. The case has a containing chamber, and the battery module is located in the containing chamber. The battery module includes a plurality of battery units arranged in a horizontal direction, and each battery unit at least includes one battery cell. A size of the battery module in the horizontal direction is larger than a size of the battery module in a vertical direction. The size of the battery module in the vertical direction is L1, and a size of the battery pack in the vertical direction is L2, where 70%≤L1/L2≤95%.