Detachable Battery Pack Shield With Impact Sensing
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Solution Overview
Problem
Existing power battery packs in new energy vehicles are vulnerable to damage from collisions and impacts, which are difficult to detect and can lead to serious accidents such as fire or explosion if not addressed promptly.
Innovation Solution
A battery pack protection system with a detachable protective plate and sensors to detect impact forces, allowing for early detection and targeted maintenance or replacement of the battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the battery pack is exposed on the bottom of the vehicle to maintain accessibility and structure, then the vehicle structure is simple and easy to manufacture, but the battery pack is vulnerable to scratches and impacts during traveling
Solution Approach 1:
The protective structure is divided into a removable protective plate and a fixed housing. The protective plate can be detached for maintenance while the housing remains fixed to the vehicle chassis, separating the protective function from the structural function.
Solution Approach 2:
A protective plate is pre-installed on the battery pack before the vehicle enters service. This protective plate serves as a preliminary defense against impacts, scratches, and deformation during normal operation.
2Device complexity
If no detection system is installed to save cost and complexity, then the device complexity is low, but impact damage is difficult to detect and highly concealed
Solution Approach 1:
Sensors are pre-installed on the protective plate to detect impacts before they reach the battery modules. This preliminary detection allows the system to identify damage early and alert the driver or system controller.
Solution Approach 2:
The protective plate acts as an intermediary between external impacts and the battery modules. Sensors embedded in the protective plate detect forces applied to it, providing indirect monitoring of battery pack safety without requiring direct sensors on the batteries themselves.
3Strength
If the protective plate is permanently fixed to ensure structural integrity, then the structural strength is high, but maintenance and replacement of the battery pack become difficult
Solution Approach 1:
The protective structure is segmented into a removable protective plate and a fixed housing. The protective plate uses detachable connections (screws, clips, or latches) that provide sufficient structural integrity during normal operation but allow easy removal when maintenance is needed.
Solution Approach 2:
The connection between the protective plate and housing transitions from a static fixed state during operation to a dynamic removable state during maintenance. The detachable connection mechanism allows the system to switch between these states as needed.
4Measurement precision
If sensors are installed on each battery module to detect all impacts, then the measurement precision is high, but the device complexity and cost increase significantly
Solution Approach 1:
The protective plate serves multiple functions: it protects the battery modules from physical damage, provides a mounting surface for sensors, and acts as a structural component of the battery pack. This multi-functionality reduces the need for separate protective structures and sensor mounting mechanisms.
Solution Approach 2:
Instead of installing sensors on every battery module, the system uses a partial approach by placing sensors only on the protective plate where they can detect the majority of external impacts. This provides sufficient protection detection without the excessive complexity of full module-level monitoring.
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
The system enables early detection and prevention of damage, reducing the risk of accidents by allowing for timely maintenance and reducing maintenance costs and time.
Implementation Method 1
at least one sensor, where the sensor is arranged on the protective plate and is configured to detect an impact force on the protective plate when impacted by an external force
Data Source
AI summary
A battery pack protection system and a vehicle are provided. The battery pack protection system includes a battery pack and a protective plate. The battery pack includes a tray. The tray includes a frame and a bottom plate. Battery modules are arranged on the bottom plate. The protective plate is arranged parallel to the bottom plate, and the protective plate is close to a side of the bottom plate. At least one sensor is arranged on the protective plate. The protective plate is detachably connected to the frame.