Method for manufacturing electric modules, and the electric module
AssigneeRobert Bosch GmbH
InventorsHans-Peter Jahn, Stephan Ernst, Volker Brielmann
Life of this patent
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Abstract
A method is described for producing electric modules, where a power module is attached to a fastening part with an adhesive, with the adhesive first being precured in an edge area, and in another step the power module is encased in a gel. In another step, the gel and the adhesive are fully cured together in one step. This method is cost- and time-optimized for producing a compact electric module with power modules that have a high power loss and are exposed to high mechanical stresses.
Claims16
A method for producing an electric module, comprising the steps of:
- a) preparing a power module having a metallic bottom piece;
- b) preparing a fastening part;
- c) applying an adhesive to a particular side of the fastening part;
- d) arranging the metallic bottom piece on the adhesive so that the adhesive forms an edge area around the power module;
- e) pre-curing the edge area by irradiating the edge area with a UV light, the UV light being directed onto the adhesive from the particular side of the fastening part;
- f) encasing the power module in a gel;
- and
- g) fully curing the gel and the adhesive together.
The method according to claim 11, further comprising the step of:
- i) converting the bonding medium into an at least partially bonding state by one of UV irradiating the bonding medium and heating the bonding medium in an induction furnace.
An electric module, comprising:
- a fastening part;
- a power module glued to the fastening part;
- and
- a casingjoined to the power module,
- wherein the casing is attached to the power module by bond wires and contact faces, and
- wherein the power module is package with a gel.
Dependencies are inferred from the claim text.