Battery Pack Case Warpage for Impact-Resistant Module Support
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Solution Overview
Problem
Existing battery pack designs that incorporate elastic springs to enhance impact resistance complicate the mold structure, making them less efficient and more costly to manufacture.
Innovation Solution
A battery pack design where the battery module is supported by warped inner surfaces within the existing battery case, eliminating the need for additional components like elastic springs by utilizing the case's inner surfaces to absorb impacts through warpage, thus simplifying the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an elastic spring is provided between the exterior case and battery module to improve impact resistance, then the impact resistance is improved, but the mold structure becomes complicated
Solution Approach 1:
The patent merges the impact absorption function into the battery case itself by creating a recessed portion in the inner surface that receives and cushions the battery module during impact. This eliminates the need for separate elastic spring components while maintaining impact resistance, thereby resolving the contradiction between reliability and device complexity
Solution Approach 2:
The recessed portion in the battery case is designed with a curved or concave shape that allows the battery module to settle into during impact events. This curved geometry provides progressive cushioning and impact absorption without requiring additional elastic components, thus improving impact resistance while keeping the mold structure simple
2Reliability
If an elastic spring is provided to enhance impact resistance, then the impact resistance is improved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The impact absorption function is integrated directly into the battery case structure through the recessed portion, eliminating the need for separate elastic spring components. This integration simplifies the manufacturing process and reduces production costs while maintaining improved impact resistance
Solution Approach 2:
The battery case's recessed portion automatically absorbs impact forces without requiring additional active components or complex assembly procedures. The structure serves its own cushioning function through its geometric design, making the manufacturing process more straightforward and cost-effective
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 effectively absorbs large impacts without complicating the structure, protecting the battery module while maintaining a straightforward manufacturing process.
Implementation Method 1
The battery module is supported on the first inner surface and the second inner surface by warpage of the first inner surface and warpage of the second inner surface. When a large impact such as falling is applied to the battery pack, the impact is alleviated or absorbed by warpage of at least one of the first and second inner surfaces.
Data Source
AI summary
Provided is a battery pack capable of improving impact resistance without complicating the structure. A battery pack according to an embodiment of the present technology includes a battery module including a battery and a battery holder that holds the battery, and a battery case that houses the battery module. The battery module has a first outer surface and a second outer surface facing the first outer surface. The battery case has a first inner surface disposed facing the first outer surface and warped toward the first outer surface, and a second inner surface disposed facing the second outer surface and warped toward the second outer surface. The battery module is supported on the first inner surface and the second inner surface by warpage of the first inner surface and warpage of the second inner surface.