Electric heating device
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Solution Overview
Problem
Existing electrical heating devices for vehicles face challenges in energy efficiency, material usage, and space optimization, particularly in vehicles with modern, fuel-efficient engines or electric motors that produce minimal waste heat, and require effective cooling of electronic components without increasing complexity or costs.
Innovation Solution
The design incorporates a housing with separate circuit board sections, plug-in devices, and heat-dissipating surfaces with ribs, allowing for energy-saving cooling and simplified assembly, while using PTC elements and MOSFET transistors for efficient heating and integration with vehicle electronics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If waste heat from the engine is used for heating, then energy efficiency is improved, but heating availability is worsened due to warm-up time and reduced waste heat in modern engines
Solution Approach 1:
The heating device enables immediate heating operation from cold start without requiring engine warm-up time. The electrical heating elements can be activated immediately when heating is needed, eliminating the delay associated with waiting for waste heat to become available.
2Power
If electrical heating devices are used to compensate for insufficient waste heat, then heating performance is improved, but energy consumption is worsened
Solution Approach 1:
The control unit regulates the heating power by changing the electrical parameters (voltage, current) supplied to the heating elements. This allows the system to provide sufficient heating performance only when and to the extent actually needed, rather than operating at constant high power.
Solution Approach 2:
The control unit monitors the actual heating effect and adjusts the electrical power supply to the heating elements accordingly. This feedback mechanism ensures that energy is consumed only to the extent necessary to achieve the desired heating performance.
3Temperature
If heat sinks are provided for cooling the control unit, then cooling effectiveness is improved, but device complexity and cost are worsened
Solution Approach 1:
The housing serves dual functions: it provides mechanical protection for the control unit and simultaneously acts as a heat sink for cooling. By merging the protective housing with the thermal management function, additional dedicated cooling components are eliminated, reducing device complexity and cost.
Solution Approach 2:
The housing is designed to perform multiple functions: mechanical protection of internal components, structural support, and thermal management through heat dissipation. This multi-functionality eliminates the need for separate dedicated cooling components.
4Temperature
If additional components are used for cooling the control unit, then cooling capability is improved, but material usage and cost are worsened
Solution Approach 1:
The housing material serves dual purposes: providing mechanical structure and enabling thermal management. This eliminates the need for additional dedicated cooling components, reducing material usage.
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 configuration enables efficient heating performance in vehicles with limited waste heat, reduces material and space usage, and extends the device's lifespan by effectively cooling sensitive components and protecting against water damage.
Implementation Method 1
electrical heating device, in particular for a motor vehicle, with at least one heating element
Implementation Method 2
heat-dissipating surfaces with ribs
Implementation Method 3
allowing for energy-saving cooling
Data Source
Figure 1~2
AI summary
The invention relates to an electrical heating device (1), in particular for a motor vehicle, with at least one heating element (9) and with at least one control device (3) with a housing (2), with at least one printed circuit board (4), with a first printed circuit board section ( 5) and a second printed circuit board section (6), and with at least one first plug-in device (7) and with at least one second plug-in device (8), the two plug-in devices (7, 8) for connecting the at least one heating element (9) to the control device (3), the housing (2) only partially accommodating the at least one printed circuit board (4), the first printed circuit board section (5) being arranged in the housing (2) and the second printed circuit board section (6) emerging from the housing (2) protrudes and the at least one first plug-in device (7) is connected to the second printed circuit board section (6) and the at least one second plug-in device (8) is connected to the heating element (9).