US 11,697,167 B2
Device and method for soldering contact elements with induction heat
Bernhard Reul, Herzogenrath (DE); and Cynthia Halm, Aachen (DE)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/261,741
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Jul. 18, 2019, PCT No. PCT/EP2019/069393
§ 371(c)(1), (2) Date Jan. 20, 2021,
PCT Pub. No. WO2020/016367, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 18184600 (EP), filed on Jul. 20, 2018.
Prior Publication US 2021/0291286 A1, Sep. 23, 2021
Int. Cl. B23K 3/00 (2006.01); B23K 1/00 (2006.01); B23K 1/002 (2006.01); H05K 3/34 (2006.01); B23K 3/047 (2006.01); B23K 3/08 (2006.01); B23K 101/36 (2006.01)
CPC B23K 1/002 (2013.01) [B23K 1/0016 (2013.01); B23K 3/0475 (2013.01); B23K 3/087 (2013.01); H05K 3/3485 (2020.08); B23K 2101/36 (2018.08)] 14 Claims
OG exemplary drawing
 
1. A system for inductive soldering, comprising:
at least one ferromagnetic contact element;
at least one conductor structure that is arranged on a nonmetallic plate, and
a device for inductively soldering the at least one ferromagnetic contact element to the at least one conductor structure on the nonmetallic plate, the device comprising:
a support to support the nonmetallic plate during the soldering operation,
at least one soldering tool having at least one induction loop or induction coil adapted to emit a magnetic field, the at least one soldering tool being spaced apart from said support to receive the nonmetallic plate, the at least one ferromagnetic contact element and the at least one conductor structure in a space that extends between said support and said at least one soldering tool,
the at least one soldering tool and the at least one ferromagnetic contact element being positioned relative to each other in said device such that the switched-on magnetic field of the soldering tool heats the at least one ferromagnetic contact element, at least in sections, and said at least one conductor structure and said at least one ferromagnetic contact element are arranged between said nonmetallic plate and said at least one soldering tool during the soldering operation, and
a generator that is adapted to generate an alternating voltage with a frequency of up to 1500 kHz and that can be connected to the induction loop or the induction coil,
wherein, apart from the at least one induction loop or induction coil, the soldering tool includes no components for directing and guiding field lines of the switched-on magnetic field,
wherein dimensions of the at least one induction loop or induction coil correspond to a length and width of the at least one ferromagnetic contact element,
wherein the device includes at least one counterholder for pressing the at least one ferromagnetic contact element onto the nonmetallic plate, the at least one counterholder being arranged adjacent the at least one soldering tool and on a same side as the at least one soldering tool with respect to the at least one ferromagnetic contact element during the soldering operation,
wherein the at least one counterholder is made only of non-ferromagnetic and non-ferritic materials, and
wherein the at least one counterholder has no components for directing and guiding field lines of the switched-on magnetic field.