| OPTIMAL POWER DISTRIBUTION OF HIGH-VOLTAGE COOLANT
HEATER FOR ELECTRIC VEHICLES THROUGH ELECTRO-THERMO-
FLUIDIC SIMULATIONS |
| Kwon Joong Son |
| Department of Mechanical and Design Engineering, Hongik University |
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| ABSTRACT |
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There is a lot of focus on improving the heating performance and efficiency of high-voltage coolant heaters for
electric vehicles. It has been noticed that the geometry design of the coolant flow path in a heat-exchanging unit plays a
primary role in enhancing the efficiency of the high-voltage heater. However, no previous study has been carried out on
power distribution to heating elements, which are usually layered thin-film structures. This paper presents multiphysics-based
computational work to explore the heat-exchanging characteristic of high-voltage heater systems with varying power
distribution schemes via split electrodes. For a 7 kW heater with symmetric serpentine flow channels and two-split heating
layers with a dual-input terminal, two power distribution cases of 3.75 kW : 3.25 kW and 4.00 kW : 3.00 kW showed better
performance than the conventional single-input port configuration equivalent to the 3.50 kW : 3.50 kW case in terms of
temperature uniformity in the working fluid and solid structures. |
| Key Words:
High voltage heater, Power distribution, Electric car heating, Layered heater, Multiphysics simulation |
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Corresponding Author.
Kwon Joong Son , Email. 
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