PTC HEATING MODULE

• Main Authors: PÄTZOLD, Stefan, VIEHRIG, Falk, TEICHMANN, Tim, KOHL, Michael
• Format: Patent
• Language: English; French; German
• Published: 03.08.2022
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RANGES; RESISTORS; TRANSPORTING; VEHICLES IN GENERAL; VENTILATING; WEAPONS

The invention relates to a PTC heating module (1) for heating a fluid. The PTC heating module (1) comprises at least one PTC thermistor (2) with two main sides (3a, 3b) opposite each other, which are spaced apart and define a thermistor thickness (DPTC) of the PTC thermistor (2). The PTC heating module (1) further comprises two contact plates (4a, 4b), between which the respective PTC thermistor (2) is arranged and with which the PTC thermistor (2) is electrically contacted.According to the invention the PTC heating module (1) comprises at least one contact socket (5a, 5b) with a contact side (6a, 6b), the contact socket (5a, 5b) resting on one side electrically conductively with its contact side (6a, 6b) against the one main side (3a, 3b) of the respective PTC thermistor (2) and on the other side resting electrically conductively against the one contact plate (4a, 4b). Due to a thickness (DS,A, DS,B) of the at least one contact socket (5a, 5b) a distance between the one contact plate (4a, 4b) and the other contact plate (4a, 4b) is enlarged. A geometric contact surface (FK,A, FK,B) between the main side (3a, 3b) of the respective PTC thermistor (2) and the contact side (6a, 6b) of the at least one contact socket (5a, 5b) is also smaller than a geometric surface (FPTC) of the main side (3a, 3b) of the respective PTC thermistor (2). As a result a creapage and/or clearance distance (7a, 7b, 7c) in the PTC heating module (1) is larger than the thermistor thickness (DPTC) of the PTC thermistor (2).