Vehicle Battery Case Force Transmission for Side-Impact Protection
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Solution Overview
Problem
In electric vehicle batteries, the battery case transmits collision forces to internal components during an impact, leading to potential disconnection of cooling systems and safety hazards due to deformation of the side wall, which can cause damage to the battery module and water-cooling pipelines.
Innovation Solution
A force transmission assembly comprising a transmission member and a fixation member is positioned between the battery module and the side wall of the battery case, allowing the transmission member to absorb and redirect collision forces to the battery module, thereby reducing the impact on water-cooling pipelines and connection members, and preventing excessive tilting of the side wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the side wall of the battery case is positioned close to the battery module to reduce space, then the battery case structure is simplified, but the side wall transmits collision force directly to the battery module and other components causing damage
Solution Approach 1:
A force transmission assembly comprising a transmission member and fixation member is introduced as an intermediary between the side wall and the battery module. The transmission member is positioned at a first distance from the battery module, while the fixation member is positioned at a second distance from the battery module, where the first distance is less than the second distance. This intermediary structure receives collision forces on its outer side and transmits them to the battery module through controlled displacement, preventing direct impact damage to the battery module and other components while maintaining compact space utilization.
2Object-affected harmful factors
If the side wall is allowed to deform during collision to absorb impact, then the protection of internal components is improved, but the side wall may tilt excessively causing disconnection of cooling systems and cables
Solution Approach 1:
The force transmission assembly is pre-configured with the transmission member positioned between the side wall and the battery module, creating a predetermined force transmission path. When collision occurs, the transmission member displaces toward the battery module in a controlled manner, preliminarily counteracting the harmful effects of uncontrolled side wall deformation. This pre-arranged structure ensures that collision forces are transmitted along a predictable path, preventing excessive tilting that would disconnect cooling systems and cables, while still allowing sufficient deformation to absorb impact energy.
3Force
If the transmission member is positioned close to the battery module to transmit force effectively, then the collision force transmission is improved, but the water-cooling pipeline and connection members positioned between the side wall and battery module are pressed and damaged
Solution Approach 1:
The transmission member serves as an intermediary that selectively transmits forces. It is positioned at a first distance from the battery module, which is less than the second distance of the fixation member from the battery module. This positioning allows the transmission member to effectively transmit collision forces to the battery module while maintaining sufficient clearance to avoid pressing and damaging the water-cooling pipeline and connection members that are positioned in the space between the side wall and the battery module.
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 configuration effectively protects the battery module and water-cooling systems from collision damage by dispersing the force and preventing direct transmission to sensitive components, enhancing the safety and stability of the battery during collisions.
Implementation Method 1
When a collision occurs to the side wall, the transmission member is displaced toward the battery module accompanied with a deformation of the side wall due to the collision so as to transmit a collision force to the battery module
Implementation Method 2
the side wall of the battery case is tilted and deformed so as to be concave toward the battery module side
Data Source
AI summary
A battery for a vehicle includes a battery case; and a battery module disposed therein, wherein the battery case includes a side wall and a bottom wall, the battery module is disposed on the bottom wall and apart away from the side wall, a force transmission assembly including a fixation member fixed and connected to the side wall and a transmission member fixed and connected to the fixation member is provided between the battery module and the side wall, a distance between the transmission member and the battery module is smaller than a distance between the fixation member and the battery module, and when a collision occurs to the side wall, the transmission member is displaced toward the battery module accompanied with a deformation of the side wall due to the collision so as to transmit a collision force to the battery module.