Battery Compartment Wall Insulation Using Layered Gas-Filled Bags
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Solution Overview
Problem
Existing energy storage prefabricated boxes face challenges in maintaining effective thermal insulation, particularly in large-sized battery compartments, which affects battery performance and safety due to increased mass and complexity in design.
Innovation Solution
Incorporating a thermal insulation member with multiple layers of gas-filled thermal insulation bags arranged in various directions within the cavity structure of the battery compartment's walls, combined with a pressure relief mechanism, to block heat transmission and manage internal pressure and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional thermal insulation materials are used in large-sized battery compartments, then thermal insulation performance can be improved, but the mass and structural complexity of the prefabricated box increase
Solution Approach 1:
The thermal insulation system is segmented into multiple independent air-filled bags arranged in layers within the cavity structure. Each bag acts as an independent insulation unit, allowing heat to be blocked through multiple discrete interfaces rather than a single continuous material layer, thereby reducing overall material mass while maintaining insulation effectiveness.
Solution Approach 2:
Air is introduced as an intermediary substance filling the bags within the cavity structure. Air serves as a thermal insulation mediator between the inner and outer walls, exploiting its low thermal conductivity to block heat transmission without adding significant mass, thus resolving the contradiction between insulation performance and weight.
2Temperature
If thermal insulation materials are added to the battery compartment walls, then thermal insulation performance is improved, but device complexity increases
Solution Approach 1:
The air-filled bags serve multiple functions simultaneously: they provide thermal insulation, act as a buffer within the cavity structure, and can be easily installed and removed. This multi-functionality reduces the need for additional specialized components, thereby simplifying the overall structural complexity while achieving effective thermal insulation.
Solution Approach 2:
The use of flexible air-filled bags instead of rigid insulation panels allows the insulation system to adapt to the cavity structure's geometry without requiring complex custom-fitted components. The flexible nature of the bags simplifies installation and structural integration, reducing device complexity while maintaining insulation performance.
3Temperature
If multiple layers of thermal insulation bags are arranged in various directions, then thermal insulation performance in multiple directions is improved, but device complexity increases
Solution Approach 1:
The insulation system is divided into multiple layers of bags arranged in different directions (first direction perpendicular to wall thickness, and second direction parallel to wall surface). Each layer targets specific heat transmission paths, blocking heat flow from multiple directions through segmented arrangement rather than requiring a single complex three-dimensional insulation structure.
Solution Approach 2:
The patent extends thermal insulation from a single-dimensional approach (one layer) to multi-dimensional arrangement by placing bags in both the thickness direction (first direction) and parallel to the surface (second direction). This dimensional expansion blocks heat transmission pathways more effectively without requiring excessive material, balancing insulation performance with structural simplicity.
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 configuration enhances thermal insulation performance, reduces the overall mass of the prefabricated box, facilitates transportation and installation, and ensures safety by preventing overheating and pressure-related accidents, thereby maintaining a stable operating environment for batteries.
Implementation Method 1
a thermal insulation member disposed in the cavity structure, the thermal insulation member including at least one layer of thermal insulation bags, the thermal insulation bags each being filled with a filler, the at least one layer of thermal insulation bags being used for blocking heat transmission
Data Source
AI summary
Embodiments of the present application provide an energy storage prefabricated box and a battery swapping station. The energy storage prefabricated box includes: a battery compartment including a first wall, the first wall having a cavity structure; and a thermal insulation member disposed in the cavity structure, the thermal insulation member including at least one layer of thermal insulation bags, the thermal insulation bags each being filled with a filler, the at least one layer of thermal insulation bags being arranged in a first direction, each layer of thermal insulation bags extending in a plane perpendicular to the first direction, the at least one layer of thermal insulation bags being used for blocking heat transmission in the first direction, and the first direction being a thickness direction of the first wall.