Battery Pack Tray With Hidden Cooling Tube Connections

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing battery pack trays have exposed connecting members that are prone to corrosion and leakage, compromising the reliability of the cooling system.

Innovation Solution

A tray design that includes a bottom plate with integrated flow channels, a frame, and an adapter piece that protects connection portions, allowing for hidden connections and reduced size, while ensuring consistent cooling and reduced flow resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the connecting member is exposed out of the tray, then the installation and maintenance are easier, but the reliability deteriorates due to corrosion and leakage risks

Engineering Contradiction:
Improveinstallation and maintenance easeVSAvoidconnection reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connecting member is nested within the tray body, forming a hidden connection structure where the connecting member is received in a receiving cavity of the tray, protecting it from external corrosion and collision while maintaining functional accessibility

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The tray body acts as a protective shell enclosing the connecting member, providing corrosion resistance and mechanical protection while allowing fluid flow through integrated channels

Inventive Principle:
Principle #30Flexible shells and thin films

2Ease of operation

If the connecting member is exposed out of the tray, then the connection access is better, but the risk of collision and leakage increases

Engineering Contradiction:
Improveconnection accessVSAvoidcollision and corrosion risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The connecting member is nested within the tray body, forming a hidden connection structure where the connecting member is received in a receiving cavity of the tray, protecting it from external corrosion and collision while maintaining functional accessibility

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The tray body provides pre-established protective enclosure around the connecting member, preventing harmful factors like corrosion and collision before they can affect the connection reliability

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If the adapter piece connections are hidden in the side beam, then the reliability improves by protecting connections, but the device complexity increases

Engineering Contradiction:
Improveconnection protectionVSAvoidtray structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The tray body integrates multiple functions including structural support, fluid distribution through channels, and protection of connecting members, merging what would otherwise be separate components into a unified structure

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tray body serves multiple purposes: it provides the cooling channel structure, acts as a protective enclosure for connecting members, and maintains structural integrity of the battery pack, reducing the need for additional protective components

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4220823B1Tray and battery pack having same
Publication Date: 2025.11.26 BYD CO LTD
  • EP4220823B1 patent drawingFigure 1~2
  • EP4220823B1 patent drawingFigure 3~4
  • EP4220823B1 patent drawingFigure 5~6

AI summary

A tray (200) and a battery pack (1000) having the same are provided. The tray includes a bottom plate (2), a frame (3), an external connecting tube (5) and an adapter piece (4). The frame includes a first side beam (32), where a first accommodating groove (321) is formed on the first side beam. An inner end of the external connecting tube extends into the first side beam. the adapter piece includes a first connecting portion (41) and a second connecting portion (42), where the first connecting portion is connected to the bottom plate, and the second connecting portion is connected to the inner end of the external connecting tube. the adapter piece is accommodated in the first accommodating groove, to allow the first connecting portion and the second connecting portion to be hidden in first side beam.