Welding auxiliary tool

The utility model relates to the field of battery welding auxiliary equipment, in particular to a welding auxiliary tool which comprises an auxiliary part and a positioning part. A concave space for accommodating and limiting the cover plate is formed in the auxiliary part; the positioning piece covers the opening of the concave space, and the positioning piece is detachably and fixedly connected with the auxiliary piece; the positioning piece is provided with a through hole used for exposing a busbar area welded with the cover plate. And the cover plate is used for simulating the welding of the single battery cells and the busbar. The battery pack has the effect of avoiding scrapping the single battery cells in the whole battery pack. 本申请涉及一种焊接辅助工装，涉及电池焊接辅助设备的领域，其包括辅助件以及定位件；所述辅助件上构造有用于容纳并限位盖板的凹陷空间；所述定位件覆盖所述凹陷空间的开口，且所述定位件与所述辅助件可拆卸的固定连接；其中，所述定位件上设置有用于外露与所述盖板焊接的汇流排区域的通孔。使用盖板模拟单体电芯与汇流排焊接，本申请具有避免报废整个电池组中的单体电芯的效果。