Core body direct-insertion PCBA type PTC heater

Abstract

The utility model discloses a core direct-insertion PCBA type PTC heater, which comprises a plastic lower shell, a plurality of uniformly distributed PTC cores are arranged in the plastic lower shell, a cast aluminum control box is arranged at the top end of the plastic lower shell, the cast aluminum control box is connected with the plastic lower shell in a clamping manner, a plastic upper shell is arranged at the top end of the cast aluminum control box, and the PTC cores are connected with the plastic upper shell in a clamping manner. A plurality of silica gel pads which are uniformly distributed are arranged at the top end of the cast aluminum control box and located in the plastic upper shell, a PCBA is arranged at the top end of the plastic upper shell, and the top end of the PTC core body extends out of the plastic lower shell and penetrates through the cast aluminum control box, the plastic upper shell and the PCBA. The beneficial effects of the utility model are that the plastic lower shell is in clamping connection with the cast aluminum control box, and the PTC core body is in clearance fit with the PCBA for direct insertion connection, so that the circuit is effectively simplified, materials are reduced, the cost is reduced, the simplicity and reliability of assembly are improved, the cost reduction and efficiency improvement significance of the whole vehicle is far-reaching, the assembly process steps are simplified, and the high speed of assembly is realized.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle component technology, specifically to a core-inserted PCBA type PTC heater. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as their power source (or use conventional vehicle fuels but employ new onboard power devices), integrating advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. Currently, the air conditioning systems of new energy vehicles require PTC heaters.

[0003] Existing new energy vehicle heaters mostly consist of a core connected to a busbar, which in turn connects to a PCBA. This assembly process is complex and cumbersome, resulting in excessive material consumption.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a core-inserted PCBA type PTC heater to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A PTC heater with a core directly inserted into a PCBA includes a plastic lower shell, in which a plurality of evenly distributed PTC cores are disposed. A cast aluminum control box is disposed at the top of the plastic lower shell and is snap-fitted to the plastic lower shell. A plastic upper shell is disposed at the top of the cast aluminum control box. A plurality of evenly distributed silicone pads are disposed at the top of the cast aluminum control box and within the plastic upper shell. A PCBA is disposed at the top of the plastic upper shell. The top of each PTC core extends beyond the plastic lower shell and passes through the cast aluminum control box, the plastic upper shell, and the PCBA.

[0008] Preferably, a partition is provided in the plastic lower shell between each pair of PTC cores.

[0009] Preferably, the plastic upper shell is connected to the cast aluminum control box by a first screw, and the first screw has three sets.

[0010] Preferably, the PCBA is connected to the cast aluminum control box via a second screw, and the second screw has four sets.

[0011] Preferably, the cast aluminum control box, the plastic upper shell, and the PCBA are all provided with through holes that match the PTC core.

[0012] The beneficial effects of this utility model are as follows: by snapping the plastic lower shell to the cast aluminum control box and by directly inserting the PTC core to the PCBA with a gap fit, the circuit is effectively simplified, materials are reduced, costs are lowered, and the ease and reliability of assembly are improved. This has profound significance for reducing costs and increasing efficiency in the whole vehicle, simplifies the assembly process, and enables high-speed assembly. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is an exploded structural diagram of a core-inserted PCBA type PTC heater according to an embodiment of the present utility model;

[0015] Figure 2 This is a main cross-sectional view of a core-inserted PCBA type PTC heater according to an embodiment of the present utility model;

[0016] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0017] In the picture:

[0018] 1. Plastic lower shell; 2. PTC core; 3. Cast aluminum control box; 4. Silicone pad; 5. Plastic upper shell; 6. PCBA; 7. Second screw; 8. First screw. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and 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, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0020] According to an embodiment of the present invention, a core-inserted PCBA type PTC heater is provided.

[0021] Example 1;

[0022] like Figure 1-3As shown, the PTC heater with a core directly inserted into a PCBA according to an embodiment of the present invention includes a plastic lower shell 1, in which a plurality of evenly distributed PTC cores 2 are disposed. A cast aluminum control box 3 is disposed at the top of the plastic lower shell 1, and the cast aluminum control box 3 is snap-fitted to the plastic lower shell 1. A plastic upper shell 5 is disposed at the top of the cast aluminum control box 3, and a plurality of evenly distributed silicone pads 4 are disposed at the top of the cast aluminum control box 3 and located in the plastic upper shell 5. A PCBA 6 is disposed at the top of the plastic upper shell 5. The top of the PTC core 2 extends to the outside of the plastic lower shell 1 and passes through the cast aluminum control box 3, the plastic upper shell 5 and the PCBA 6 respectively.

[0023] Example 2;

[0024] like Figure 1-3 As shown, the device includes a plastic lower shell 1, within which are a plurality of evenly distributed PTC cores 2. A cast aluminum control box 3 is located at the top of the plastic lower shell 1 and is snap-fitted to the plastic lower shell 1. A plastic upper shell 5 is located at the top of the cast aluminum control box 3, and a plurality of evenly distributed silicone pads 4 are located at the top of the cast aluminum control box 3 and within the plastic upper shell 5. A PCBA 6 is located at the top of the plastic upper shell 5. The tops of the PTC cores 2 extend beyond the plastic lower shell 1 and penetrate the cast aluminum control box 3, the plastic upper shell 5, and the PCBA 6. A partition is located between each pair of PTC cores 2 within the plastic lower shell 1. The plastic upper shell 5 is connected to the cast aluminum control box 3 by three sets of first screws 8. The PCBA 6 is connected to the cast aluminum control box 3 by four sets of second screws 7. The cast aluminum control box 3, the plastic upper shell 5, and the PCBA 6 are all provided with through holes that match the PTC core 2.

[0025] In practical applications, during assembly, the PTC core is first inserted into the lower plastic shell 1. Then, the cast aluminum control box 3 is snapped onto the top of the lower plastic shell 1. Next, the upper plastic shell 5 is placed on top of the cast aluminum control box 3, and the upper plastic shell 5 is connected to the cast aluminum control box 3 using the first screw 8. Immediately afterwards, the PCBA 6 is placed on top of the upper plastic shell 5, and the PCBA 6 is connected to the cast aluminum control box 3 using the second screw 7. During this process, the top contacts of the PTC core 2 extend to the outside of the lower plastic shell 1 and penetrate the cast aluminum control box 3, the upper plastic shell 5, and the PCBA 6 respectively. By snapping the lower plastic shell to the cast aluminum control box and by directly inserting the PTC core to the PCBA with a gap fit, the circuit is effectively simplified, materials are reduced, costs are lowered, and the ease and reliability of assembly are improved. This has profound significance for reducing costs and increasing efficiency in the whole vehicle, simplifying the assembly process steps, and realizing high-speed assembly.

[0026] In summary, by utilizing the above-mentioned technical solution of this utility model, the circuit is effectively simplified, materials are reduced, costs are lowered, and assembly ease and reliability are improved by connecting the plastic lower shell to the cast aluminum control box by snap-fitting and by directly inserting the PTC core to the PCBA through a gap fit. This has profound significance for reducing costs and increasing efficiency in the whole vehicle, simplifying the assembly process steps, and realizing high-speed assembly.

[0027] 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. A PTC heater with a core directly inserted into a PCBA, characterized in that, The device includes a plastic lower shell (1), in which a plurality of evenly distributed PTC cores (2) are provided. A cast aluminum control box (3) is provided at the top of the plastic lower shell (1), and the cast aluminum control box (3) is snap-fitted to the plastic lower shell (1). A plastic upper shell (5) is provided at the top of the cast aluminum control box (3). A plurality of evenly distributed silicone pads (4) are provided at the top of the cast aluminum control box (3) and in the plastic upper shell (5). A PCBA (6) is provided at the top of the plastic upper shell (5). The top of the PTC cores (2) extends to the outside of the plastic lower shell (1) and passes through the cast aluminum control box (3), the plastic upper shell (5) and the PCBA (6) respectively.

2. A core-inserted PCBA type PTC heater according to claim 1, characterized in that, A partition is provided in the plastic lower shell (1) and between the two PTC cores (2).

3. A core-inserted PCBA type PTC heater according to claim 1, characterized in that, The plastic upper shell (5) is connected to the cast aluminum control box (3) by a first screw (8), and the first screw (8) has three sets.

4. A core-inserted PCBA type PTC heater according to claim 1, characterized in that, The PCBA (6) is connected to the cast aluminum control box (3) by a second screw (7), and the second screw (7) has four sets.

5. A core-inserted PCBA type PTC heater according to claim 1, characterized in that, The cast aluminum control box (3), the plastic upper shell (5), and the PCBA (6) are all provided with through holes that match the PTC core (2).

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