Battery Pack Housing Outlet Structure for Full Cell Immersion Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery pack designs are limited by the height of the battery module, which restricts the position of the liquid outlet in the battery pack housing, which restricts the position of the liquid outlet in the battery module, which is inconvenient for the battery pack housing, which is inconvenient for the design of the battery pack housing.
Innovation Solution
The battery pack housing includes a box with a box installation cavity that accommodates battery cells, a liquid outlet on the sidewall, and a liquid outlet structure with a connection opening and cavity, allowing coolant to flow from the cavity through the opening and pipe, with the connection opening above the battery cells and the outlet end below, ensuring complete submersion and efficient coolant discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the liquid outlet is positioned at a certain distance above the upper surface of the battery module to ensure complete submersion, then the battery module can be completely submerged in coolant, but the position design of the liquid outlet is limited by the height of the battery module
Solution Approach 1:
The liquid outlet system is segmented into two parts: the liquid outlet structure on the battery pack housing and the liquid outlet pipe extending into the battery module. This segmentation allows the outlet structure to be positioned independently from the battery module height constraints, enabling flexible positioning while ensuring complete submersion of the battery module through the extendable pipe.
Solution Approach 2:
The liquid outlet pipe extends vertically into the battery module along the height dimension, allowing the liquid outlet structure to be positioned at a lower height on the housing while still achieving coolant discharge from the top surface of the battery module. This dimensional approach decouples the housing outlet position from the module submersion requirement.
2Productivity
If the liquid outlet structure is installed on the sidewall with connection opening above battery cells and outlet end below, then coolant flow path is optimized, but the structure becomes more complex
Solution Approach 1:
The liquid outlet structure merges the connection opening, liquid outlet cavity, and outlet pipe into a single integrated component installed on the sidewall. This combination simplifies the overall structure by eliminating separate connection pieces while maintaining the optimized coolant flow path that moves from above the battery cells through the cavity to the outlet end below.
Solution Approach 2:
The liquid outlet cavity acts as an intermediary chamber that receives coolant from the connection opening above the battery cells and directs it to the outlet end below. This intermediary structure enables the vertical flow path optimization without requiring complex external piping or multiple connection points.
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 enables complete submersion of battery cells for uniform heat dissipation, reduces space occupation, and lowers production costs while maintaining effective cooling, facilitating a more efficient and cost-effective battery pack design.
Implementation Method 1
the coolant immersing the plurality of battery cells flows from the box installation cavity through the connection opening, the liquid outlet cavity, and the liquid outlet pipe in sequence
Data Source
AI summary
This disclosure provides a battery pack housing, a battery pack, and a vehicle. The battery pack housing includes a box provided with a box installation cavity and a liquid outlet structure. A liquid outlet is provided at a sidewall of the box. The liquid outlet structure is provided with a connection opening and a liquid outlet cavity in fluid communication with the connection opening. The box installation cavity is in fluid communication with the liquid outlet. A first horizontal plane where the connection opening is located is higher than upper surfaces of the plurality of battery cells and a bottom of the liquid outlet cavity, and a second horizontal plane where a bottom end of the liquid outlet is located is lower than the first horizontal plane.