Splicing Battery Box Layout for Higher Capacity in Less Height
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Solution Overview
Problem
Increasing battery capacity by stacking battery packs requires additional frames and connecting structures, leading to inconvenient assembly, high costs, low volume utilization, and large space occupation.
Innovation Solution
A battery box with splicing boxes that accommodate cell assemblies, eliminating the need for separate bottom and top plates, and using conductive assemblies inside the box to connect cells in series, with multiple sealant layers for sealing and a liquid cooling system for temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple battery packs are stacked to increase battery capacity, then the battery capacity increases, but the overall height increases and volume utilization decreases
Solution Approach 1:
The patent transitions from vertical stacking of complete battery packs to horizontal/layered arrangement of cell assemblies within a shared box body. Multiple cell assemblies are arranged in layers within the same box body space, changing the spatial dimension from vertical stacking to layered horizontal arrangement, thereby increasing capacity without proportionally increasing height.
Solution Approach 2:
The patent merges multiple battery pack functions into a single integrated box body structure. Instead of separate battery packs each requiring their own bottom plate and top plate, multiple cell assemblies share common protective structures and connecting mechanisms within one box body, consolidating resources and reducing overall dimensions.
2Quantity of substance
If multiple battery packs are stacked to increase battery capacity, then the battery capacity increases, but the volume utilization rate decreases
Solution Approach 1:
The patent utilizes layered horizontal arrangement within the box body rather than vertical stacking, optimizing the use of available volume. Cell assemblies are positioned in multiple layers that efficiently fill the box body space, improving volume utilization by better matching the three-dimensional space configuration.
Solution Approach 2:
By merging multiple cell assemblies into a single box body with shared protective structures, the patent eliminates redundant volume occupied by duplicate bottom plates, top plates, and frames. This consolidation improves overall volume utilization rate while maintaining the required battery capacity.
3Quantity of substance
If additional frames and connecting structures are added to stack battery packs, then the battery capacity increases, but the device complexity increases
Solution Approach 1:
The patent combines multiple battery pack structures into a single integrated box body, merging protective functions and connecting mechanisms. Instead of separate frames and connecting structures for each battery pack, a unified box body structure serves all cell assemblies, significantly reducing structural complexity.
Solution Approach 2:
The box body structure serves multiple functions simultaneously: it provides mechanical protection, structural support, and electrical connection pathways for multiple cell assemblies. This multi-functionality reduces the need for separate specialized components, simplifying the overall device structure.
4Quantity of substance
If multiple battery packs are stacked to increase battery capacity, then the battery capacity increases, but the manufacturing cost increases
Solution Approach 1:
The patent consolidates multiple battery pack manufacturing processes into a single box body assembly process. By manufacturing one box body to accommodate multiple cell assemblies rather than assembling multiple separate battery packs, material costs, labor costs, and manufacturing complexity are reduced, lowering overall production costs.
Data Source
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AI summary
Provided are a battery box and a multilayer battery system. The multilayer battery system includes a battery box, a conductive assembly, and multiple cell assemblies (20). The battery box includes a bottom guard plate (11), a box cover (13), and a box body connected to the bottom guard plate (11) and the box cover (13). The box body includes at least two splicing boxes (12) that are stacked. For each splicing box (12), the upper end and the lower end of the splicing box (12) are each provided with an opening. The cell assemblies (20) are stacked. Each splicing box (12) accommodates a cell assembly (20). The conductive assembly is disposed in the battery box and configured to be electrically connected to the cell assemblies (20).