Stacked Battery Pack Structure With Bolt-Through Case Mounting
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Solution Overview
Problem
Conventional multi-battery packs require separate brackets and additional space for mounting, leading to increased cost and inefficiency due to the need for separate apparatus to fix multiple battery packs.
Innovation Solution
A multi-battery pack design featuring a case frame with through-holes for long bolts to couple and secure multiple battery packs together, eliminating the need for additional space and apparatus, with a bushing inserted into each hole to prevent deformation and an upper cover with varied fastening holes for secure alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate brackets are used to mount multi-battery pack, then mounting function is achieved, but space is wasted and cost is increased
Solution Approach 1:
The patent merges the mounting bracket function with the battery pack case frame itself. The case frame is designed with through-holes that directly serve as mounting points, eliminating the need for separate brackets. This integration combines the structural enclosure function with the mounting function into a single component, thereby achieving the mounting capability without additional space consumption.
Solution Approach 2:
The case frame is designed to perform multiple functions: it serves as both the structural enclosure for battery cells and as the mounting structure for the multi-battery pack assembly. The through-holes in the case frame enable it to function as both a protective casing and a fastening structure, allowing direct mounting of multiple battery packs without requiring dedicated bracket components.
2Reliability
If separate apparatus is used to fix multiple battery packs, then fixing capability is achieved, but additional space and apparatus are necessary
Solution Approach 1:
The patent combines the fixing apparatus function with the battery pack structure itself. Long bolts are inserted through aligned through-holes in stacked battery packs, and these bolts serve dual purposes: they fasten the battery packs together and provide the fixing capability to mount the entire assembly. This eliminates the need for separate fixing apparatus while maintaining reliable fixation.
Solution Approach 2:
The battery pack case frame is designed with built-in through-holes that enable self-fixing capability. When multiple battery packs are stacked, the through-holes align automatically, allowing long bolts to pass through and secure the assembly without requiring external fixing devices. The structure serves its own fastening needs through its inherent design.
3Stability of the object's composition
If conventional multi-battery pack structure is used, then battery packs can be stacked, but separate bracket and additional space are required
Solution Approach 1:
The patent integrates the stacking function directly into the case frame design. Through-holes are positioned on the outer surfaces of the case frame at locations that enable vertical stacking when multiple battery packs are assembled. This eliminates the need for separate stacking brackets or additional space, as the case frame itself provides the stacking interface through its through-hole configuration.
Data Source
AI summary
A multi-battery pack includes a plurality of stacked battery packs, and a plurality of long bolts to couple the plurality of battery packs to each other and to fix the plurality of battery packs to a device. Each of the battery packs includes a plurality of battery cells and a case to receive the plurality of battery cells therein. The case includes a case frame to receive the battery cells therein and to have a plurality of through-holes through which the long bolts are inserted, a lower cover coupled to a lower part of the case frame; and an upper cover coupled to an upper part of the case frame. The upper cover includes a circular first fastening hole and a second fastening hole having one side open in a C-shape wherein the first and second fastening holes allow the long bolts to be fastened therethrough.