Battery Storage Case Coolant Joint Layout for Low Pressure Loss
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Solution Overview
Problem
Existing battery storage cases with coolant passages increase volume and weight, and bending supply/discharge passages for coolant leads to increased pressure loss and reduced rigidity of the outer frame.
Innovation Solution
A battery storage case design featuring a bottom wall member with a coolant passage and an outer frame that includes an upper upright portion and inclined block portion, with obliquely inclined through holes and connection tubes to reduce pressure loss and maintain rigidity, using adapter parts and joint parts for easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the supply/discharge passage is connected to the coolant passage within the bottom wall member in an obliquely inclined state, then the pressure loss of the coolant is reduced, but the rigidity of the outer frame is likely to decrease
Solution Approach 1:
The patent introduces an adapter part as an intermediary component that connects to the coolant passage and provides supply/discharge passages. This adapter part serves as a mediator between the coolant passage and the external circulation circuit, allowing the connection to be made without requiring the supply/discharge passage to penetrate through the outer frame, thus maintaining frame rigidity while enabling efficient coolant flow
Solution Approach 2:
The patent changes the spatial arrangement by providing supply/discharge passages that extend in a direction substantially perpendicular to the flow direction of the coolant passage. This dimensional change allows the connection to be made without bending the passage in a crank shape, reducing pressure loss while avoiding penetration through the outer frame
2Temperature
If the coolant passage is formed inside the bottom wall member, then the cooling performance is improved, but the volume and weight of the case body are increased
Solution Approach 1:
The patent merges the coolant passage function with the bottom wall member structure by forming the coolant passage inside the bottom wall member. This integration allows the bottom wall member to serve dual purposes: providing structural support and enabling coolant circulation for cooling, thereby improving cooling performance without requiring additional separate cooling components that would increase volume
3Ease of manufacture
If the supply/discharge passage is bent in a crank shape, then the connection between the coolant passage and circulation circuit is achieved, but the pressure loss of the coolant increases
Solution Approach 1:
The patent changes the spatial arrangement by providing supply/discharge passages that extend in a direction substantially perpendicular to the flow direction of the coolant passage. This dimensional change allows the connection to be made without bending the passage in a crank shape, reducing pressure loss while maintaining connection capability
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
Reduces coolant pressure loss, maintains outer frame rigidity, and facilitates easy assembly, resulting in a smaller, lighter, and more energy-efficient battery storage case.
Implementation Method 1
a coolant passage (14) built into the bottom wall member (13)... a coolant flows inside the case body... cooling performance for the battery cells
Implementation Method 2
the pressure loss of the coolant flowing through a flow path increases if the piping is bent in the crank shape... the connection tube protrudes obliquely upward from the bottom wall member toward the upper surface of the inclined block portion
Data Source
AI summary
This battery storage case includes a bottom wall member having a module placement portion on which a battery module is placed and having a coolant passage built thereinto, an outer frame connected to an outer edge of the bottom wall member, and an adapter part connected to the coolant passage and configured to supply and discharge a coolant to and from the coolant passage. The outer frame has an upper upright portion configured to rise upward from an upper surface of the bottom wall member and an inclined block portion connected to a side surface of the upper upright portion and configured to bulge downward from an upper portion so that a distance from the upper upright portion increases and have a lower surface in contact with the bottom wall member. A through hole which passes therethrough in an up-down direction and to which the adapter part is connected on an upper portion side is provided on the inclined block portion. A joint part having one end connected to the coolant passage and the other end on which a connection tube is formed is attached in a region where the upper upright portion of the bottom wall member and the inclined block portion are placed. The connection tube protrudes obliquely upward from the bottom wall member toward the upper surface of the inclined block portion inside the through hole. The adapter part is connected to the connection tube of the joint part in a fitted state inside the through hole.