Battery Pack Holding Pad With Double-Sided Glue for Vibration Resistance
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Solution Overview
Problem
Conventional battery pack assemblies in electrified vehicles experience deformation and potential failure due to vehicle vibrations and impact loads, which cause relative movements and damage to cooling plates and other components over time.
Innovation Solution
The battery pack assembly incorporates a structural frame support assembly with holding pads coated with double-sided glue between the cooling plates and support frames, inhibiting relative movement and distributing vibrations uniformly to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional battery pack assemblies are used without vibration resistant holding pads, then the structure is simpler and easier to manufacture, but the components experience deformation and potential failure due to vehicle vibrations and impact loads
Solution Approach 1:
The holding pad acts as an intermediary component between the cooling plate and the support frame. It includes a first adhesive layer between the cooling plate and the holding pad, and a second adhesive layer between the holding pad and the support frame, thereby mediating the connection and preventing direct relative movement that would cause deformation.
Solution Approach 2:
The holding pad is constructed as a composite structure combining a foam core material with adhesive layers on both sides. The foam core provides vibration absorption and shock resistance, while the adhesive layers provide bonding strength, creating a composite material solution that addresses both reliability and vibration resistance requirements.
2Strength
If holding pads with double sided glue are added to inhibit relative movement, then the anti-impact and vibration absorption capabilities are enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
The holding pad merges multiple functions into a single component: vibration absorption through the foam core, shock resistance through the same foam structure, and bonding through the double-sided adhesive layers. This consolidation simplifies the overall assembly process compared to using separate vibration isolation elements and adhesive bonds.
Solution Approach 2:
The holding pad utilizes the viscoelastic properties of foam material that change under different loading conditions. The foam exhibits soft, compliant behavior under static loads to absorb vibrations, while maintaining structural integrity under impact loads, thereby adapting its mechanical parameters to different operational conditions.
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 enhances the anti-impact and vibration absorption capabilities of the battery pack, reducing the likelihood of component deformation and failure by stabilizing the cooling plates and support frames, thereby extending the lifespan of the battery pack.
Implementation Method 1
The holding pad can have first structural glue disposed thereon between the holding pad and the second floor cooling plate. The holding pad can further have second structural glue disposed thereon between the holding pad and the second floor module support frame.
Implementation Method 2
The holding pad can be formed of a vibration resistant material. In some examples, the holding pad can be formed of expanded polypropylene.
Data Source
AI summary
A battery pack assembly for an electrified vehicle includes a main body assembly comprising a structural frame support assembly. The structural frame support assembly includes a first floor module support frame, a first floor cooling plate, a second floor module support frame, a second floor cooling plate and a holding pad. The second floor module support frame can support an upper battery housing. The holding pad can be disposed between the second floor module support frame and the second floor cooling plate. The holding pad can have first structural glue disposed thereon between the holding pad and the second floor cooling plate. The holding pad can further have second structural glue disposed between the holding pad and the second floor module support frame. The first and second structural glue inhibits relative movement between the second floor cooling plate, holding pad and second floor module support frame.