Coolant heater for a vehicle

The invention relates to a coolant heater for a vehicle. The coolant heater for a vehicle includes: a housing unit having an inlet part through which a coolant is introduced and an outlet part throughwhich the coolant is discharged; a baffle assembly provided in an internal space of the housing unit and having a first flow path through which the coolant flows in a first direction and a second flow path through which the coolant, passing through the first flow path, flows in a second direction different from the first direction; a first heater part provided in the first flow path; and a secondheater part provided in the second flow path. The coolant heater makes it possible to obtain an advantageous effect of improving a fast-acting heating performance and heating efficiency. 本发明涉及一种用于车辆的冷却剂加热器，该冷却剂加热器包括：壳体单元，具有冷却剂流入的入口部和排出冷却剂的出口部；导流组件，设置在壳体单元的内部空间中，并且具有冷却剂在第一方向上流动的第一流路和通过第一流路的冷却剂在与第一方向不同的第二方向上流动的第二流路；第一加热器部，设置在第一流路中；以及第二加热器部，设置在第二流路中。该冷却剂加热器能够获得提高速效取暖性能和取暖效率的有益效果。