Electrified low-voltage APTC heater

Abstract

The utility model discloses an electrified low-voltage APTC heater, which comprises a plastic shell and a heating core body, the heating core body is positioned in the plastic shell, and the side part of the plastic shell is respectively provided with a positive electrode terminal and a negative electrode common terminal; the heating core body comprises a plurality of groups of positive electrode radiating fins, PTC (Positive Temperature Coefficient) resistance heating fins and negative electrode radiating fins, insulating ceramic chips are arranged between the positive electrode radiating fins and the negative electrode radiating fins, and the plurality of groups of negative electrode radiating fins are connected in parallel to serve as a common negative electrode. The cathode radiating fins are connected in parallel to serve as a common cathode; when each positive radiating fin is electrified, the corresponding resistance heating sheet works; an insulating ceramic chip can be arranged between the positive radiating fin and the negative radiating fin, so that the area is not heated and is not short-circuited; the heat dissipation corrugation structure, the bonding combination structure between the heat dissipation corrugation structure and the resistance heating sheet and the surface charged APTC are simpler in structure, light in weight and high in power density, and development requirements of new energy are better met.

Description

TECHNICAL FIELD

[0001] The utility model relates to APTC heater technical field, concretely, relate to a low voltage APTC heater of electrification formula. BACKGROUND

[0002] The PTC heater is a kind of high-efficiency heater, and it has the advantages of good thermal conductivity, uniform temperature, long service life, strong mechanical property and corrosion resistance.

[0003] New energy vehicles, existing warm air heater is mostly high-voltage APTC, power is big, energy consumption is high;Part of new vehicle is equipped with heat pump system, low temperature working condition only needs small power APTC to meet the use requirement.

[0004] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENTS

[0005] For the problems in the related art, the utility model provides a low voltage APTC heater of electrification formula to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the specific technical scheme as follows:

[0007] A low voltage APTC heater of electrification formula, including plastic shell and heating core, the heating core is located in the plastic shell, and the side of the plastic shell is respectively provided with a positive terminal and a negative common terminal;

[0008] The heating core includes a plurality of positive heat sinks, PTC resistance heating sheets and negative heat sinks, and an insulating ceramic sheet is arranged between the positive heat sinks and the negative heat sinks.

[0009] Preferably, the positive heat sinks and the negative heat sinks are respectively provided with heat dissipation corrugations.

[0010] Preferably, the heat dissipation corrugations include a plate, a corrugation and a bent edge, and the corrugation is located between the plate and the bent edge.

[0011] Preferably, the positive heat sinks and the negative heat sinks are connected to the PTC resistance heating sheets corresponding by adhesive silica gel.

[0012] The utility model has the advantages that: the heating core is composed of a plurality of PTC resistance heating sheets, positive heat sinks and negative heat sinks;The negative heat sinks are connected in parallel as a common negative electrode;When each positive heat sink is powered on, the corresponding resistance heating sheet works.

[0013] The insulating ceramic sheet is arranged between the positive heat dissipation sheet and the negative heat dissipation sheet, so that the area is not heated and short circuit is avoided; the structure of the heat dissipation corrugation is combined with the resistance heating sheet, the surface charged APTC is simple in structure, light in weight, high in power density, and more conducive to the development requirement of new energy. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Fig. 1 is a structural schematic diagram of a surface charged low-voltage APTC heater according to an embodiment of the present application;

[0016] Fig. 2 is a top view of a heating core in a surface charged low-voltage APTC heater according to an embodiment of the present application;

[0017] Fig. 3 is a structural schematic diagram of a heat dissipation corrugation in a surface charged low-voltage APTC heater according to an embodiment of the present application.

[0018] In the drawings:

[0019] 1, plastic shell; 2, heating core; 3, positive terminal; 4, negative common terminal; 5, positive heat dissipation sheet; 6, PTC resistance heating sheet; 7, negative heat dissipation sheet; 8, insulating ceramic sheet; 10, plate; 11, corrugation; 12, bent edge; 13, adhesive silicone. DETAILED DESCRIPTION

[0020] To further illustrate the embodiments, the present application provides drawings which are part of the disclosure of the present application, mainly used to illustrate the embodiments, and can be used to explain the operating principle of the embodiments in cooperation with the related description of the specification. With reference to these contents, those skilled in the art should understand other possible embodiments and advantages of the present application. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0021] According to the embodiment of the present application, a surface charged low-voltage APTC heater is provided.

[0022] Embodiment one:

[0023] As Figs. 1-3As shown, the live low-voltage APTC heater according to an embodiment of the present invention includes a plastic shell 1 and a heating core 2. The heating core 2 is located inside the plastic shell 1. The side portion of the plastic shell 1 is respectively provided with a positive terminal 3 and a negative common terminal 4.

[0024] The heating core 2 includes multiple sets of positive heat sinks 5, PTC resistance heating elements 6, and negative heat sinks 7. An insulating ceramic sheet 8 is provided between the positive heat sinks 5 and the negative heat sinks 7. The multiple sets of negative heat sinks 7 are connected in parallel to serve as a common negative electrode.

[0025] Example 2:

[0026] like Figs. 1-3 As shown, the positive heat sink 5 and the negative heat sink 7 are both equipped with heat dissipation corrugations. The heat dissipation corrugations include an electrode plate 10, a corrugation 11, and a bend 12. The corrugation 11 is located between the electrode plate 10 and the bend 12. The positive heat sink 5 and the negative heat sink 7 are connected to the PTC resistance heating element 6 via adhesive silicone 13.

[0027] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0028] In practical applications, the electrode consists of a positive heat sink 5 and a negative heat sink 7, with the positive and negative heat sinks arranged alternately or arranged adjacently after being isolated by an insulating ceramic sheet.

[0029] In summary, with the help of the above-mentioned technical solution of this utility model, the heating core 2 is composed of multiple sets of PTC resistance heating elements 6, positive heat sink 5 and negative heat sink 7; the negative heat sink 7 is connected in parallel to serve as a common negative electrode; when each positive heat sink 5 is energized, the corresponding resistance heating element works.

[0030] An insulating ceramic sheet 8 can be placed between the positive electrode heat sink 5 and the negative electrode heat sink 7 to ensure that this area is not heated and will not short-circuit. The heat dissipation corrugated structure, combined with the adhesive bonding structure between the resistive heating element and the surface-charged APTC, has a simpler structure, lighter weight, and higher power density, which is more conducive to the development requirements of new energy.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrically powered low-voltage APTC heater, characterized in that, It includes a plastic shell (1) and a heating core (2), the heating core (2) being located inside the plastic shell (1), and the side of the plastic shell (1) being provided with a positive terminal (3) and a negative common terminal (4); The heating core (2) includes multiple sets of positive heat sinks (5), PTC resistance heating elements (6) and negative heat sinks (7). An insulating ceramic sheet (8) is provided between the positive heat sink (5) and the negative heat sink (7). Multiple sets of negative heat sinks (7) are connected in parallel to serve as a common negative electrode.

2. The energized low-voltage APTC heater according to claim 1, characterized in that, Both the positive electrode heat sink (5) and the negative electrode heat sink (7) have heat dissipation ripples.

3. The energized low-voltage APTC heater according to claim 2, characterized in that, The heat dissipation corrugation includes an electrode plate (10), a corrugation (11), and a bend (12), with the corrugation (11) located between the electrode plate (10) and the bend (12).

4. The energized low-voltage APTC heater according to claim 3, characterized in that, The positive heat sink (5) and the negative heat sink (7) are connected to the PTC resistance heating element (6) via adhesive silicone (13).

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