High-voltage PTC heating bag

Abstract

The utility model discloses a high-voltage PTC (Positive Temperature Coefficient) heating bag, which comprises a plastic frame body and an electrode slice, a PTC slice is arranged in the plastic frame body, the top end of the PTC slice is connected with the bottom end of the electrode slice, and the PTC slice is connected with the plastic frame body through a connecting piece. The beneficial effects are that the plastic frame body and the electrode slice are designed into an integrated structure; structural glue is added around the PTC piece, the insulation distance is increased, the creepage distance between the positive electrode and the negative electrode of the PTC piece is increased, and larger insulation and compression strength is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of water PTC heaters, in particular to a high-voltage PTC heating pack. Background Art

[0002] Pure electric vehicles are an inevitable trend in the development of future vehicles. In order to improve driving comfort, market competitiveness and vehicle battery life, it is essential to provide a supporting thermal management system. The air-conditioning system of traditional fuel vehicles uses the waste heat of the engine for heating. Since pure electric vehicles do not have engines and their main energy comes from batteries, how to generate heat has brought new challenges to the design of pure electric vehicle thermal management systems and air-conditioning systems. At present, PTC water heaters are mature, comfortable and safe heating components on pure electric vehicles. This component is of great significance to the air-conditioning system and battery thermal management system of pure electric vehicles in extremely cold environments.

[0003] The existing water PTC heater uses a layer of PTC heating unit in a metal shell, and the PTC heating unit is connected to an external power supply through a power cord. When it is needed, the single-layer PTC water heating element is placed in the water to be heated and connected to the power supply for heating. The PTC water heating element of this structure has a small creepage distance between the positive and negative electrodes of the PTC sheet, a low insulation withstand voltage strength, unstable power, and is difficult to achieve automated production.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a high-voltage PTC heating pack to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A high-voltage PTC heating pack comprises a plastic frame and an electrode sheet. The plastic frame is provided with a PTC sheet, the top of the PTC sheet is provided with a connection with the bottom of the electrode sheet, and the PTC sheet is connected to the plastic frame through a connector.

[0008] Preferably, the connecting member is structural glue.

[0009] Preferably, the PTC sheet is a PTC ceramic sheet.

[0010] Preferably, the width of the electrode sheet is equal to the width of the PTC sheet.

[0011] Preferably, there is a gap between the plastic frame and the PTC sheet.

[0012] Preferably, the gap is filled with silica gel or insulating material.

[0013] Preferably, the plastic frame and the electrode sheet are integrally formed.

[0014] The beneficial effects of the utility model are as follows: by designing the plastic frame and the electrode sheet into an integrally formed structure, the assembly of the electrode sheet and the plastic frame is reduced;

[0015] Add structural glue around the PTC sheet to increase the insulation distance and the creepage distance between the positive and negative poles of the PTC sheet to obtain greater insulation withstand voltage strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of a high-voltage PTC heating pack according to an embodiment of the utility model;

[0018] Figure 2 It is a top view of a high-voltage PTC heating pack according to an embodiment of the utility model;

[0019] Figure 3 yes Figure 2 Cross-sectional view of AA in the middle;

[0020] Figure 4 yes Figure 3 A local enlarged schematic diagram of point B in the middle.

[0021] In the figure:

[0022] 1. Plastic frame; 2. Electrode sheet; 3. PTC sheet; 4. Connector. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the utility model, a high-voltage PTC heating pack is provided.

[0025] Embodiment 1;

[0026] like Figure 1-4 As shown, the high-voltage PTC heating pack according to the embodiment of the utility model includes a plastic frame 1 and an electrode sheet 2. The plastic frame 1 and the electrode sheet 2 are integrally formed. A PTC sheet 3 is provided in the plastic frame 1. The top of the PTC sheet 3 is connected to the bottom end of the electrode sheet 2. The PTC sheet 3 is connected to the plastic frame 1 through a connector 4.

[0027] Embodiment 2:

[0028] like Figure 1-4 As shown, the connecting piece 4 is structural glue, the PTC sheet 3 is a PTC ceramic sheet, the width of the electrode sheet 2 is equal to the width of the PTC sheet 3, there is a gap between the plastic frame 1 and the PTC sheet 3, the gap is filled with silicone or insulating material, and the plastic frame 1 and the electrode sheet 2 are an integrally formed structure.

[0029] In summary, with the aid of the above technical solution of the utility model, the plastic frame 1 and the electrode sheet 2 are designed as an integrally formed structure, thereby reducing the assembly of the electrode sheet 2 and the plastic frame 1;

[0030] Structural glue is added around the PTC sheet 3 to increase the insulation distance and the creepage distance between the positive and negative electrodes of the PTC sheet 3 to obtain a greater insulation withstand voltage strength.

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

Claims

1. A high-voltage PTC heating pack, comprising a plastic frame (1) and an electrode sheet (2), characterized in that: A PTC sheet (3) is provided in the plastic frame (1); the top end of the PTC sheet (3) is connected to the bottom end of the electrode sheet (2); and the PTC sheet (3) is connected to the plastic frame (1) via a connecting piece (4).

2. A high voltage PTC heating pack according to claim 1, characterized in that: The connecting piece (4) is structural glue.

3. A high voltage PTC heating pack according to claim 1, characterized in that: The PTC sheet (3) is a PTC ceramic sheet.

4. A high voltage PTC heating pack according to claim 1, characterized in that: The width of the electrode sheet (2) is equal to the width of the PTC sheet (3).

5. A high voltage PTC heating pack according to claim 1, characterized in that: There is a gap between the plastic frame (1) and the PTC sheet (3).

6. A high voltage PTC heating pack according to claim 5, characterized in that: The gap is filled with silica gel or insulating material.

7. A high voltage PTC heating pack according to claim 1, characterized in that: The plastic frame (1) and the electrode sheet (2) are an integrally formed structure.

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