PTC electric heater

Abstract

The invention provides a PTC electric heater, and belongs to the technical field of electric heating devices. The heater comprises a water tank, a plurality of PTC heating modules, an electric connecting plate, the plurality of PTC heating modules are embedded in the upper side of the water tank and are in contact with the outer wall of the water tank, the electric connecting plate is arranged onthe upper side of the water tank and is electrically connected with the PTC heating modules, the PTC heating modules comprise positive pole pieces and negative pole pieces which are electrically connected; the positive pole pieces and the negative pole pieces correspondingly extend upwards to form positive pole connecting ends and negative pole connecting ends; the positive pole connecting ends and the negative pole connecting ends are correspondingly laterally outwards convex to form positive pole elastic bulges, negative pole elastic bulges; and when the positive pole connecting ends and thenegative pole connecting ends are inserted into the electric connecting plates, the positive pole elastic bulges and the negative pole elastic bulges correspondingly retract and laterally abut against the electric connecting plates. The PTC electric heater has the advantages that structure is compact and the electric connecting plates are convenient to install.

Description

technical field [0001] The invention belongs to the technical field of electric heating devices, and relates to a PTC electric heater, in particular to a PTC electric heater for new energy electric vehicles. Background technique [0002] PTC (Positive Temperature Coefficient) heaters are PTC heaters. PTC heaters have the characteristics of fast starting speed, good temperature control, ideal working reliability, energy saving and long service life. At this stage, PTC heaters are often configured on new energy electric vehicles for battery thermal management and air conditioning heating. [0003] PTC electric heaters usually include water tanks with flow channels, PTC heating modules, electrical connection boards, control circuit boards, plastic parts, die-cast aluminum shells, etc. [0004] For example, a Chinese patent with an application number of 201810863208.4 discloses a PTC electric heater, including the electrical connection between the controller and the PTC heatin...

AI Technical Summary

Problems solved by technology

[0005] However, after the positive electrode and negative electrode of the PTC heater are inserted into the electrical connection plate, the electrical connection still needs to be welded to achieve electrical connection, and the design structure is complicated, the consistency of production is difficult to guarantee, and the production efficiency is relatively low. , it is difficult to troubleshoot the cause of the

Images