PTC HEATING MODULE AND A METHOD FOR PRODUCING THE PTC HEATING MODULE
First Claim
1. A PTC heating module for heating a fluid, comprising:
- a plurality of PTC thermistors each having two main surfaces, wherein the two main surfaces of the plurality of PTC thermistors are located opposite to one another and spaced apart relative to one another in a thickness direction,two contact plates each provided with a contact surface, between which the plurality of PTC thermistors are arranged transversely to the thickness direction next to one another and spaced apart relative to one another,wherein the two main surfaces of the plurality of PTC thermistors are electrically contacted with the contact surfaces of a respective one of the two contact plates, andat least one dielectric function element, arranged between the two contact plates and laterally sealingly engaged about the plurality of PTC thermistors, such that a hollow space between the two contact plates in the thickness direction is at least partly filled out with the at least one dielectric function element and a creepage distance between the two contact plates within the hollow space is enlarged.
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Accused Products
Abstract
The disclosure relates to a PTC heating module for heating a fluid and a method for producing such a PTC heating module. The PTC heating module includes a plurality of PTC thermistors having main surfaces disposed opposite to one another and spaced apart relative to one another in a thickness direction. The PTC thermistors are arranged between two contact plates next to one another transversely to the thickness direction and spaced apart relative to one another. The main surfaces of the PTC thermistors are electrically contacted with a contact surface of the two contact plates. At least one dielectric function element is arranged between the two contact plates and laterally sealingly engages about the respective PTC thermistors to at least partially fill a hollow space between the two contact plates and facilitate enlarging a creepage distance between the two contact plates within the hollow space.
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20 Claims
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1. A PTC heating module for heating a fluid, comprising:
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a plurality of PTC thermistors each having two main surfaces, wherein the two main surfaces of the plurality of PTC thermistors are located opposite to one another and spaced apart relative to one another in a thickness direction, two contact plates each provided with a contact surface, between which the plurality of PTC thermistors are arranged transversely to the thickness direction next to one another and spaced apart relative to one another, wherein the two main surfaces of the plurality of PTC thermistors are electrically contacted with the contact surfaces of a respective one of the two contact plates, and at least one dielectric function element, arranged between the two contact plates and laterally sealingly engaged about the plurality of PTC thermistors, such that a hollow space between the two contact plates in the thickness direction is at least partly filled out with the at least one dielectric function element and a creepage distance between the two contact plates within the hollow space is enlarged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 17, 18, 19)
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11. A method for producing a PTC heating module, comprising:
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providing a plurality of PTC thermistors each having two main surfaces disposed opposite to one another and spaced apart from one another in a thickness direction of the plurality of PTC thermistors; arranging the plurality of PTC thermistors between two contact plates next to one another transversely to the thickness direction and spaced apart relative to one another; joining the plurality of PTC thermistors with the two contact plates, wherein the plurality of PTC thermistors are joined simultaneously with the two contact plates or are joined first with one of the two contact plates and then with the other of the two contact plates, such that the two main faces of the plurality of PTC thermistors are indirectly or directly electrically contacted with a respective contact surface of the two contact plates, and wherein prior to the joining or after the joining of the plurality of PTC thermistors with the two contact plates, applying at least one dielectric function element comprising a dielectric coating onto the respective contact surface of at least one of the two contact plates, wherein applying the at least one dielectric function element comprising the dielectric coating includes at least partially filling a hollow space between the two contact plates in the thickness direction and laterally sealing the plurality of PTC thermistors with the dielectric coating. - View Dependent Claims (12, 13, 14, 15)
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20. A PTC heating module for heating a fluid, comprising:
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a plurality of PTC thermistors respectively having two main surfaces disposed opposite to one another and spaced apart relative to one another in a thickness direction; two contact plates arranged spaced apart from one another in the thickness direction, the plurality of PTC thermistors arranged between the two contact plates next to and spaced apart from one another transversely to the thickness direction, wherein the two main surfaces of the plurality of PTC thermistors are electrically contacted with a respective contact surface of the two contact plates; and a dielectric coating arranged between the two contact plates and laterally sealingly engaged about the plurality of PTC thermistors, wherein the dielectric coating is fixed on the contact surface of at least one of the two contact plates and at least partially fills a hollow space between the two contact plates to facilitate increasing a creepage distance between the two contact plates within the hollow space.
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Specification