Inductive Charging Device Active Cooling Shielding Plate
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Solution Overview
Problem
Inductive charging devices for electric vehicles face overheating issues due to increased heat generation at high charging powers, leading to potential damage and reduced efficiency.
Innovation Solution
The integration of an active cooling assembly with a metal shielding plate, utilizing a liquid cooling medium and channel structure inserts to enhance heat dissipation, allowing for turbulent flow and increased heat transfer, thereby preventing overheating and increasing charging power and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the charging power is increased, then the charging efficiency is improved, but the heat generation increases leading to overheating
Solution Approach 1:
The patent converts the harmful heat generated during high-power charging into a manageable thermal management challenge by integrating a cooling assembly. The cooling assembly with channels directs coolant flow through strategic pathways that maximize heat extraction from the shielding plate, transforming the overheating problem into an controlled thermal exchange process that enables sustained high-power operation
Solution Approach 2:
The patent introduces a coolant as an intermediary substance that mediates heat transfer between the shielding plate and the environment. The coolant flows through channels in the cooling assembly, absorbing heat from the shielding plate and transporting it away, thereby preventing direct thermal damage to charging components while enabling continuous high-power charging
2Temperature
If the dimensions of the metal shielding plate are increased to enlarge heat-emitting surface, then the heat dissipation is improved, but the structural volume and weight are increased
Solution Approach 1:
The patent transitions from a two-dimensional heat dissipation approach (enlarging the surface area of the shielding plate) to a three-dimensional approach by integrating internal cooling channels within the shielding plate structure. This allows heat to be dissipated through volumetric cooling pathways rather than requiring increased surface area, maintaining a compact and lightweight design while achieving effective thermal management
Solution Approach 2:
The patent segments the shielding plate into functional zones with integrated cooling channels, dividing the heat dissipation function into multiple sequential cooling stages. The channels are distributed throughout the shielding plate structure, creating multiple heat extraction points that collectively dissipate heat efficiently without requiring a single large surface area, thus reducing overall weight
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 active cooling system effectively dissipates heat, preventing overheating and allowing for higher charging powers, reducing charging time and improving the overall efficiency of the inductive charging device.
Implementation Method 1
an active cooling assembly (9) which is fastened to the metal shielding plate (8) so as to allow heat transfer
Implementation Method 2
a liquid cooling medium—for example water, coolant or oil—is directed through the cooling assembly and takes off the heat arising at the metal shielding plate
Implementation Method 3
through a coupling of the secondary coil with a primary coil, the energy store of the motor vehicle is able to be charged
Data Source
AI summary
An inductive charging device may include a charging assembly with at least one induction coil and at least one magnet plate, which may be ferrimagnetic or ferromagnetic at least on some regions, and an emission protection assembly fastened to the charging assembly, with a metal shielding plate, in order to shield field emissions arising during an inductive charging process. The emission protection assembly may have an active cooling assembly lying against the metal shielding plate so as to allow heat transfer and fastened thereto. The cooling assembly may have: at least one boundary insert lying against the metal shielding plate, by which a cooling region of the cooling assembly may be delimited; at least one channel structure insert lying against the metal shielding plate in the cooling region, through which a channel structure for a cooling medium may be provided; and a cooling cover, fastened to the boundary insert in a fluid-tight manner, in order to cover the cooling assembly.