Vehicle Power Storage Case Deformation Control
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Solution Overview
Problem
Existing vehicle power storage devices mounted outside the vehicle compartment face deformation issues during collisions, leading to reduced internal volume and potential damage to the battery module due to uneven deformation patterns.
Innovation Solution
The vehicle incorporates a power storage device with a joining unit and bottom surface reinforcing members, where the joining unit includes brackets that absorb impact forces, reducing deformation and preventing the power storage module from interfering with the case walls by allowing controlled outward bulging of the side surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the power storage device is disposed outside the vehicle compartment, then the space in the vehicle compartment is sufficient, but the power storage case deforms and the power storage module may be damaged during collision
Solution Approach 1:
The patent applies beforehand cushioning by providing a deformation absorption member between the power storage case and the collision object. This member is pre-positioned to absorb impact energy during collision, preventing the collision force from directly transmitting to the power storage module and causing damage
Solution Approach 2:
The deformation absorption member serves as an intermediary element between the external collision object and the power storage case. It mediates the impact force by deforming itself, thereby protecting the power storage module from direct collision damage while allowing the power storage case to maintain its structural integrity
2Strength
If the joining member is fixed to the side member, then the power storage device is securely mounted, but the power storage case cannot deform freely and may be crushed during impact
Solution Approach 1:
The patent applies segmentation by dividing the mounting system into distinct functional components: the power storage case, the deformation absorption member, and the joining member. This segmentation allows each component to perform its specific function - the case maintains structural integrity, the absorption member handles deformation, and the joining member provides secure mounting
Solution Approach 2:
The patent applies local quality by providing different properties to different parts of the system. The joining member is designed with high strength for secure mounting, while the deformation absorption member is designed with controlled deformability to absorb impact energy, and the power storage case maintains its structural rigidity for protection
3Loss of energy
If the beam member is displaced by impact force, then the impact energy is absorbed, but the internal volume of the power storage case is reduced and the module may interfere with the inner wall
Solution Approach 1:
The patent applies taking out by extracting the deformation function from the power storage case itself and placing it in a separate deformation absorption member. This allows the case to maintain its internal volume and shape for housing the power storage module, while the absorption member independently handles the energy absorption through its controlled deformation
Data Source
AI summary
A vehicle includes a vehicle body, a power storage device, and a joining unit. The power storage device includes a power storage module and a power storage case. The power storage case includes a case body and a plurality of bottom surface reinforcing members. The joining unit includes a first bracket joined to a first end of a first bottom surface reinforcing member, a second bracket joined to a second end of a second bottom surface reinforcing member, and a third bracket joined to a second end of a third bottom surface reinforcing member. No joining unit is provided at a second end of the first bottom surface reinforcing member.