Inverted Battery Cell Layout With Carrying Assembly for Collision Rigidity
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Solution Overview
Problem
The energy density of existing batteries is low, leading to inefficient use of space and poor rigidity, which results in safety concerns during collisions, as the top of the battery is more vulnerable and prone to damage.
Innovation Solution
A battery design with an opening at the bottom, where battery cells are arranged upside down, and a carrying assembly between the cells and cover body supports them, enhancing rigidity and safety by distributing stress and preventing damage during collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If battery cells are arranged with top cover plates facing upward in a conventional battery, then the battery structure is simple, but the rigidity is poor and the battery is prone to thermal runaway during collisions
Solution Approach 1:
The patent inverts the conventional arrangement by making the top cover plates of the battery cells face downward toward the bottom of the battery, rather than upward. This inversion allows the cover plates to act as support surfaces that enhance rigidity during collisions, while the carrying assembly distributes stress across multiple contact points, resolving the contradiction between improved strength and structural complexity.
Solution Approach 2:
The carrying assembly serves as an intermediary component between the battery cells and the bottom of the battery. It provides multiple support points that distribute collision forces across the inverted top cover plates, thereby enhancing rigidity and preventing thermal runaway without requiring direct structural modification of the battery cells themselves.
2Quantity of substance
If the battery uses conventional cell arrangement, then the manufacturing process is simple, but the energy density is low resulting in waste of space
Solution Approach 1:
By inverting the top cover plates to face downward, the patent enables a tighter packing arrangement of battery cells. The inverted cover plates rest on the carrying assembly, allowing cells to be positioned more efficiently in the battery space, thereby increasing energy density while maintaining manufacturing simplicity through the modular carrying assembly design.
Solution Approach 2:
The carrying assembly is divided into multiple support components that can be independently positioned and adjusted. This segmentation allows for optimized spatial arrangement of battery cells, maximizing energy density while keeping the manufacturing process straightforward through modular assembly of the support structure.
3Reliability
If the battery uses conventional cell support structure, then the device complexity is low, but the rigidity is poor leading to vulnerability during collisions
Solution Approach 1:
The carrying assembly acts as an intermediary support structure that enhances safety during collisions by distributing impact forces across multiple contact points with the inverted top cover plates. This modular intermediary structure improves reliability without requiring complex integration into the battery cell design itself.
Solution Approach 2:
The carrying assembly is designed to provide pre-positioned support points that cushion and distribute collision forces before they can concentrate on single battery cells. This beforehand cushioning effect enhances safety by preventing thermal runaway, while the simple modular structure avoids excessive complexity.
Data Source
AI summary
Embodiments of the present application provide a battery and an electrical apparatus. The battery includes a box body, a cover body, battery cells, and a carrying assembly. A bottom of the box body is provided with an opening. The cover body covers the opening, and is fixedly connected to the box body. A plurality of battery cells are arranged in the box body, and a top cover plate of each of the battery cells faces the opening and is arranged upside down in the box body. The carrying assembly is arranged between the battery cells and the cover body to support and carry the battery cells. According to the embodiments of the present application, the structural stability and the safety of the battery can be improved.