Battery Pack Coolant Leak Seal and Discharge Guide
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Solution Overview
Problem
Conventional battery packs with cooling systems face challenges in preventing coolant leaks from entering the battery module, leading to reduced cooling efficiency and potential damage to electrical components, while existing solutions complicate the structure and increase manufacturing costs.
Innovation Solution
A battery pack design featuring a housing with a seal between the heat exchanger and the inner surface, a discharge opening, and a gasket to prevent coolant inflow and direct leaking coolant to the outside, ensuring the coolant does not reach the battery module, thus maintaining performance and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling plate is mounted inside the housing, then cooling efficiency is improved, but it becomes difficult to detect coolant leaks and the leaking coolant may damage electrical components
Solution Approach 1:
A guide member is introduced as an intermediary component between the cooling plate and the housing. This guide member channels leaking coolant toward a discharge opening, enabling detection while maintaining the cooling plate's internal mounting position for optimal cooling efficiency
Solution Approach 2:
The harmful aspect of coolant leakage is extracted and directed away from electrical components through the guide member and discharge opening, separating the cooling function from the leak hazard
2Difficulty of detecting and measuring
If the cooling plate is mounted outside the housing, then coolant leaks can be detected, but cooling efficiency is reduced and the cooling plate is more susceptible to damage
Solution Approach 1:
The guide member acts as a mediator that allows the cooling plate to remain inside the housing for optimal cooling while still enabling leak detection by directing coolant to a discharge opening
Solution Approach 2:
The housing structure is segmented into functional zones: a cooling zone where the cooling plate operates efficiently, and a leak detection zone with the discharge opening, allowing both functions to coexist
3Duration of action of stationary object
If additional protection devices are added to protect the cooling plate, then durability is improved, but the overall structure becomes complicated and manufacturing costs increase
Solution Approach 1:
The guide member combines multiple functions into a single component: it protects the cooling plate from external damage, directs leaking coolant to the discharge opening for detection, and maintains structural integrity, thereby avoiding the need for multiple separate protection devices
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 solution effectively prevents coolant from flowing towards the battery module, ensuring stability and reliability by discharging leaks externally, allowing for easy detection and rapid response to coolant leakage, while maintaining performance and safety.
Implementation Method 1
a seal provided between the heat exchanger and the inner surface of the housing for preventing a coolant leaking from the heat exchanger from flowing into the first space
Implementation Method 2
a heat exchanger provided in the housing for cooling the battery cell or the battery module
Data Source
AI summary
A battery pack prevents an inflow of a leaking coolant. The battery pack includes a housing, in which at least one battery cell or battery module is mounted, a heat exchanger provided in the housing for cooling the battery cell or the battery module, and seal provided between the heat exchanger and the inner surface of the housing for preventing coolant leaking from the heat exchanger from flowing into a space in which the battery cell or the battery module is placed, whereby the stability and reliability of the battery pack are improved.