PTC heater, production process thereof and heater assembly having PTC heater
A heater and assembly technology, applied in the direction of ohmic resistance heating parts, ohmic resistance electrodes, etc., can solve the problems of increasing the weight of the assembly, affecting the heat exchange efficiency, and high bonding costs, so as to improve the efficiency of the heat exchange system and ensure The effect of full contact and reasonable structural design
Pending Publication Date: 2019-08-16
山东德逸新能源汽车科技有限公司
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Problems solved by technology
[0006] This kind of PTC heater has the following problems. First, the electrode and the electrode box are glued to the fin assembly after being fixed, which affects the heat transfer efficiency, and the cost of the glue is relatively high; in addition, the fin itself is not shaped, so the two sides The side plate must be welded, which increases the weight of the assembly, and the thermal resistance also increases accordingly, which affects the heat dissipation efficiency of the PTC heater
Method used
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[0024] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0025] according to figure 1 Shown: the present invention provides a kind of PTC heater, comprises fin 1 and electrode box 4, and the specific assembly structure of fin 1 and electrode box 4 is as follows:
[0026] The fins 1 are provided with two groups and are respectively welded and fixed on the upper surface and the lower surface of the electrode box 4;
[0027] The width of the upper side surface and the lower side surface of the electrode box 4 is set larger than the width of the fin 1, and the two long side edges of the upper side surface and the lower side surface of the electrode box 4 constitute the pressing surface 6 respectively, and the pressing The joint surface 6 is used for pressing the upper side a...
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The invention relates to a PTC heater, a production process thereof and a heater assembly having the PTC heater. The PTC heater comprises fins and an electrode box. The two groups of fins are fixedlywelded onto the upper surface and the lower surface of the electrode box respectively. Two long side edges of the upper surface and the lower surface of the electrode box form press surfaces respectively. Multiple PTC heaters are assembled in a frame to form the heater assembly. The production process of the PTC heater comprises the following steps: 1) welding the two groups of fins onto the uppersurface and the lower surface of the electrode box respectively; 2) installing the PTC heater and electrodes in the electrode box, and then, filling heat-conducting glue in the electrode box; and 3)pressing the electrode box through the press surfaces and the side surfaces of the electrode box. The PTC heater is reasonable in structure design; and a part of the electrode box can be pressed and deform by utilizing the press surfaces after the fins are welded to the electrode box, thereby ensuring full contact between components and improving efficiency of a heat exchange system.
Description
technical field [0001] The invention relates to the technical field of PTC heaters, in particular to a PTC heater for electric vehicles, a production process thereof and a heater assembly with the PTC heater. Background technique [0002] Now the production of PTC heater includes the following steps: [0003] The first step is to put the PTC heating element and electrode into the electrode box, roll after injecting glue, and fully fit the PTC heating element and electrode after the electrode box is deformed; [0004] In the second step, the fins and side plates should be welded in advance to form a fin side plate assembly; [0005] In the third step, because high-temperature welding cannot be performed after the electrodes are installed, glue is applied between multiple sets of electrode box assemblies and fin side plate assemblies to finally form a PTC heater. [0006] This kind of PTC heater has the following problems. First, the electrode and the electrode box are glued...
Claims
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IPC IPC(8): H05B3/02H05B3/03
CPCH05B3/02H05B3/03
Inventor 曹水刘明亮
Owner 山东德逸新能源汽车科技有限公司