Reinforced Battery Box Structure for Cell-End Stability
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Solution Overview
Problem
Existing battery housings lack sufficient structural strength, leading to potential instability and safety issues during driving, which can compromise power supply performance and cause safety accidents.
Innovation Solution
A battery box design featuring reinforced trays and sealing covers with support and reinforcing plates that cover the end areas of battery cells, along with additional structural elements like middle beams and chambers for electrical components, to enhance structural integrity and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional battery housing design is used, then device complexity is low, but structural strength is insufficient
Solution Approach 1:
The battery housing is divided into multiple functional components: tray with support plates, sealing cover with reinforcing plates, middle beams, and chambers. Each component serves specific structural purposes, allowing the complex strength requirements to be distributed across modular elements rather than requiring a monolithic complex structure.
Solution Approach 2:
Support plates and reinforcing plates are strategically positioned at critical locations where battery cells make contact with the housing. The plates are disposed at two ends of the battery cell along the extension direction, providing localized reinforcement exactly where needed to prevent instability, rather than uniformly strengthening the entire housing.
2Reliability
If battery housing lacks sufficient structural strength, then device complexity is low, but reliability deteriorates
Solution Approach 1:
The support plates and reinforcing plates are pre-positioned and fixed to the tray and sealing cover respectively before battery cell installation. This preliminary structural preparation ensures that when battery cells are placed, the protective framework is already in place to prevent instability and safety issues during driving operations.
Solution Approach 2:
The design adds structural elements in multiple dimensions: support plates extend vertically from the tray to contact battery cell ends, reinforcing plates are positioned on the sealing cover at corresponding locations, and middle beams provide horizontal reinforcement. This multi-dimensional reinforcement approach comprehensively addresses reliability requirements.
Data Source
Figure 1~2
Figure 3~4
Figure 5a~5b
AI summary
A battery box, a battery pack, and a vehicle are provided. The battery box includes a tray configured to carry a battery cell and a sealing cover covering a top of the tray. The tray includes a first plate body, a first support plate is disposed at two ends of the first plate body along an extension direction of the battery cell, and at least part of a projection of the first support plate on the first plate body covers an end area of the battery cell. The sealing cover includes a second plate body, a first reinforcing plate is disposed at two ends of the second plate body along the extension direction of the battery cell, and at least part of a projection of the first reinforcing plate on the second plate body covers the end area of the battery cell.