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发明公开
CN104010758A 具有多点接触的大电流变压器、变压器元件、接触板和次级绕组以及用于制造这种大电流变压器的方法 有权

具有多点接触的大电流变压器、变压器元件、接触板和次级绕组以及用于制造这种大电流变压器的方法
摘要：
本发明涉及一种大电流变压器(12)，特别是用于用以提供电阻焊接装置(1)的焊接电流的电源(10)的大电流变压器(12)，所述大电流变压器(12)包括至少一个初级绕组(13)和带有中央抽头的至少一个次级绕组(14)。本发明还涉及一种用于这种大电流变压器(12)的变压器元件、接触板(29)和次级绕组(14)以及用于制造该大电流变压器(12)的方法。为了降低损失并提高效率，设置至少四个触头(20，21，22，23)以形成多点接触，所述触头(20，21，22，23)由四个接触表面形成，所述至少一个初级绕组(13)和所述至少一个次级绕组(14)以串联/并联电路的方式布置在所述四个接触表面内。
摘要（英）：

The invention relates to a heavy-current transformer (12), in particular for a power source (10) for providing a welding current of a resistance welding device (1), comprising at least one primary winding (13) and at least one secondary winding (14) having a center tap. The invention also relates to a transformer element, a contact plate (29) and a secondary winding (14) for such a heavy-current transformer (12), and to a method for the production thereof. In order to reduce losses and improve the efficiency, at least four contacts (20, 21, 22, 23) are provided for forming a multi-point contacting, said contacts (20, 21, 22, 23) being formed by four contact surfaces, within which the at least one primary winding (13) and the at least one secondary winding (14) are arranged in a series/parallel circuit.

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