Operating fluid tank

The invention relates to an operating fluid tank (1) for a motor vehicle, in particular for storing an aqueous additive, comprising: a tank wall (2) made of a thermoplastic material, wherein the tankwall (2) has a top (3), a bottom (4) and side walls (5), and the tank wall (2) delimits a tank volume (6), wherein the tank volume (6) has a height, a depth and a width; and at least one electricallyoperated heating device having one or more heating elements (9), the heating element (9) being inserted into an outer depression of the tank wall (2), or into an outer recess or opening in the tank wall (2), or into an inner structure that is integrally formed with the tank wall (2) and that extends into the tank volume (6), and the heating element (9) extending over at least one third of the height of the tank volume (6) and being electrically contacted outside the tank volume (6). 本发明涉及一种用于机动车辆的操作流体箱(1)，操作流体箱(1)具体用于储存水性添加剂，其包括：由热塑性材料制成的箱壁(2)，其中，箱壁(2)包括顶部(3)、底部(4)和侧壁(5)，以及箱壁(2)界定箱容积(6)，其中，箱容积(6)具有高度、深度和宽度；以及至少一个电动加热装置