Dual-Sided EVSE Heatsink for Sealed Charging Thermal Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric vehicle supply equipment (EVSE) experiences high internal temperatures during charging, leading to component damage and reduced reliability due to reliance on fresh air intake for thermal management, which compromises Ingress Protection (IP) and Pollution Degree (PD) ratings, requiring frequent maintenance.
Innovation Solution
A dual-sided heatsink thermal management system that utilizes a first side facing internal ambient air and a second side facing external ambient air, with fans and airflow guides to reject heat while preventing air mixing, ensuring low pollution degree and eliminating the need for dust filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If fresh air intake is used for thermal management, then heat rejection performance is improved, but Ingress Protection (IP) and Pollution Degree (PD) ratings are compromised
Solution Approach 1:
The thermal management system is segmented into two independent air circulation paths: an internal path that draws air from inside the EVSE enclosure through heatsinks, and an external path that exhausts air to the outside environment. This segmentation allows heat rejection functionality while maintaining sealed enclosures that preserve IP and PD ratings.
Solution Approach 2:
The system uses sealed enclosures as intermediaries that isolate internal electronic components from external environmental contaminants. Thermal management is achieved through internal air circulation and heatsinks that transfer heat to the enclosure exterior, eliminating the need for direct fresh air intake while maintaining protection ratings.
2Temperature
If fresh air intake is used for thermal management, then heat rejection performance is improved, but maintenance frequency increases due to air filter requirements
Solution Approach 1:
The system extracts and eliminates the air filter component entirely by using sealed enclosures with internal air circulation. Heat rejection is achieved through heatsinks that transfer thermal energy to the enclosure exterior, removing the need for filters that would require maintenance.
Solution Approach 2:
The thermal management system operates autonomously using natural convection and heatsink radiation to reject heat without requiring filter maintenance or external intervention. The sealed enclosure design allows the system to manage its own thermal needs without compromising protection ratings.
3Temperature
If internal ambient air is circulated across heatsink to reject heat, then thermal performance is improved, but air mixing between internal and external environments occurs
Solution Approach 1:
The air circulation system is segmented into distinct internal and external zones separated by sealed enclosures. Internal air is circulated through heatsinks that transfer heat to the enclosure exterior, while external air paths are kept separate, preventing mixing and maintaining environmental isolation.
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 dual-sided heatsink system enhances thermal performance, maintains low pollution degree, and reduces maintenance requirements, allowing for extended intervals between maintenance cycles while supporting high-capacity charging without compromising IP ratings.
Implementation Method 1
a dual-sided heatsink that includes a first side that faces internal ambient air of the EVSE and a second side that faces external ambient air
Implementation Method 2
A first fan circulates the internal ambient air of the EVSE across the first side to reject heat from the internal ambient air into the first side
Implementation Method 3
A first fan circulates the internal ambient air of the EVSE across the first side to reject heat from the internal ambient air into the first side
Data Source
AI summary
An electric vehicle supply equipment (EVSE) includes a thermal management system that includes a dual-sided heatsink that includes a first side that faces internal ambient air of the EVSE and a second side that faces external ambient air. A first fan circulates the internal ambient air of the EVSE across the first side to reject heat from the internal ambient air into the first side. A first airflow guide guides the internal ambient air across the first side of the dual-sided heatsink. A second fan draws external ambient air that flows across the second side to reject heat from the second side out of the thermal management system. A second airflow guide guides the external ambient air across the second side. An airflow seal prevents the external ambient air and the internal ambient air from mixing.