Positive temperature coefficient (PTC) heater capable of superposing modules

Abstract

The utility model belongs to the field of heaters, and discloses a PTC heater capable of superposing modules. The heater is provided. Comprising more than one water chamber and a heating core body assembly, the heating core body assembly comprises more than one regulation and control unit and more than one PTC core body; the water chamber is located on the outer side of the heating core assembly. And the regulation and control unit and the PTC core body in the heating core body assembly are overlapped in sequence. For limitation in the prior art, flexibility and expandability are improved through innovative modular design, heat energy management is optimized, and modules are easy to replace and maintain.

Description

Technical Field

[0001] The utility model belongs to the field of heaters, and particularly relates to a PTC heater with stackable modules. Background Art

[0002] With the rapid development of new energy vehicles, smart home, and industrial automation fields, the demand for efficient, energy-saving, and intelligent heating technologies is increasing day by day. PTC heaters are widely used due to their self-limiting temperature characteristics, safety and reliability, long service life, etc. However, although traditional PTC heaters have characteristics such as self-limiting temperature, safety and reliability, they often require customized design when facing different heat energy requirements and space limitations, lacking flexibility and scalability. In addition, a single large-area PTC heating plate has limitations in power control and thermal uniformity.

[0003] The core structure of the existing PTC heater mainly consists of left and right water chambers, an electric control unit, and a PTC core. Among them, the PTC heating sheets in the core are closely attached to the surface of the flat tube, and heat is transferred to the flowing fluid by means of heat conduction. The fluid flows through the flat tube and circulates in the left and right water chambers. Its structure is as Figure 1 shown. This PTC heater is often designed for specific applications, with fixed dimensions and power, and it is difficult to adapt to changing heating requirements and spatial layout changes. Once the application scenario changes, it is necessary to re-design and manufacture, increasing costs and time consumption, lacking flexibility and scalability. A single large-area PTC heating plate may have uneven heat distribution, making it difficult to achieve precise local heating control. At the same time, the power regulation is not fine enough, making it difficult to meet the high-efficiency requirements under different working conditions, and the thermal management efficiency is low. Moreover, the maintenance and replacement processes are complex, affecting the stable operation of the system and the service life. Content of the Utility Model

[0004] This structure proposes a PTC heater stacking module system, which allows users to freely combine heating modules according to actual needs. Whether it is to increase the heating area or adjust the total output power, it can be quickly achieved without customized development, greatly reducing costs and time costs, and significantly improving flexibility and scalability; each module integrates an intelligent control unit, which can not only independently control temperature and power, but also implement a global thermal management strategy through communication between modules to ensure more uniform heat distribution, improve heating efficiency and accuracy, and meet diverse heating needs; the modular design simplifies the maintenance process, making fault troubleshooting and module replacement simple and fast, ensuring long-term stable operation and reducing maintenance costs.

[0005] The technical solution of the utility model is as follows.

[0006] A PTC heater with stackable modules includes more than one water chamber and a heating core component; the heating core component includes more than one regulation unit and more than one PTC core; the water chamber is located outside the heating core component; the regulation units and PTC cores in the heating core component are stacked in sequence.

[0007] Further, the water chamber includes a left water chamber and a right water chamber; the regulation unit includes a first regulation unit and a second regulation unit; the PTC core includes a first PTC core and a second PTC core; the left water chamber and the right water chamber are located on both sides of the heating core component, and the first regulation unit, the first PTC core, the second regulation unit, and the second PTC core are respectively arranged inside the heating core component from top to bottom.

[0008] Further, the water chamber and the heating core component are arranged inside a housing, and the housing is composed of an upper housing and a lower housing.

[0009] Further, a PBC assembly control board and a heat dissipation board are arranged above the heating core component.

[0010] Further, the PBC assembly control board is connected to an insulated gate bipolar transistor IGBT, and the insulated gate bipolar transistor IGBT is connected to a mounting board.

[0011] Further, a breather valve is provided on the upper housing.

[0012] Further, a water port is provided on the water chamber, the water port extends outside the housing, and a fixing block and a sealing block are provided on the water port.

[0013] Further, a low-voltage plug and a high-voltage plug are provided on the lower housing, and the low-voltage plug and the high-voltage plug are fixed on the lower housing by screws. The low-voltage plug is wire-connected to low-voltage components such as an internal control circuit and a sensor; the high-voltage plug is wire-connected to high-voltage components such as an internal heating unit and a power switch unit.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] 1. Improve flexibility and scalability, the increase in power can be quickly achieved, and the customization development cost and time are reduced.

[0016] 2. Optimize heat energy management and control accuracy to ensure more uniform heat distribution.

[0017] 3. Easy to maintain, and troubleshooting and module replacement become simple and fast. Description of the Drawings

[0018] Figure 1 It is a structural diagram of a PTC heater in the prior art;

[0019] Figure 2 This is a schematic diagram of the PTC heater structure of the present utility model;

[0020] Figure 3 This is an exploded view of the PTC heater of the present utility model;

[0021] Figure 4 This is a front view of the internal stacked module cores of the heating core assembly;

[0022] Figure 5 This is a top view of the internal stacked module cores of the heating core assembly;

[0023] Figure 6 This is Figure 5 the A - A cross - sectional view in

[0024] The various components in the figure are as follows:

[0025] Fixing block 1, sealing block 2, water inlet 3, heating core assembly 4, low - voltage plug - in 5, high - voltage plug - in 6, insulated gate bipolar transistor IGBT 7, PBC assembly control board 8, heat dissipation plate 9, upper shell 10, breather valve 11, mounting plate 12, water chamber 13, lower shell 14, first PTC core 15, first regulation unit 16, second PTC core 17, second regulation unit 18, first connection structure 19, second connection structure 20. Specific implementation mode

[0026] In the following description, the technical solutions are elaborated in combination with specific drawings to fully understand the present utility model application. However, the present application can be implemented in many other ways different from those described herein. Similar extended embodiments made by those of ordinary skill in the art without creative efforts all fall within the protection scope of the present utility model.

[0027] As Figures 2 to 6 shown, this embodiment includes two water chambers 13 and a heating core assembly 4; the water chambers 13 respectively include a left water chamber 13.1 and a right water chamber 13.2; the heating core assembly 4 includes two regulation units and two PTC cores; the water chambers are located outside the heating core assembly 4. The regulation units include a first regulation unit 16 and a second regulation unit 18; the PTC cores include a first PTC core 15 and a second PTC core 17; the left water chamber 13.1 and the right water chamber 13.2 are located on both sides of the heating core assembly 4. In this embodiment, inside the heating core assembly 4, a first regulation unit 16, a first PTC core 15, a second regulation unit 18, and a second PTC core 17 are arranged from top to bottom.

[0028] The water chamber 13 and the heating core assembly 4 are arranged inside the housing, and the housing is composed of an upper housing 10 and a lower housing 14. Above the heating core assembly 4, there are a PBC total control board 8 and a heat dissipation board 9; the PBC total control board 8 in the PTC heater ensures safe use by precise temperature control and providing functions such as short-circuit protection and leakage protection; the heat dissipation board 9 in the PTC heater can protect the PTC element from overheating damage and ensure the long-term stable operation of the device. Each set of stacked modules having a PBC total control board 8 and a heat dissipation board 9 is conducive to precise temperature control of each group and effective heat dissipation of the components to prevent overheating. The PBC total control board 8 is connected to an insulated gate bipolar transistor IGBT 7, and the insulated gate bipolar transistor IGBT 7 is connected to the mounting plate 12; the IGBT 7 can quickly turn on and off the current to precisely control the magnitude of the current flowing through the PTC heating element, thereby controlling the heating power; the mounting plate 12 beside the IGBT 7 mainly provides structural support and electrical isolation; the IGBT 7, as a key electronic switching element, is responsible for precisely controlling the heating power, while the fixing plate 12 provides the necessary structural support and electrical isolation to ensure the efficient and safe operation of the entire heating system.

[0029] In this embodiment, a breather valve 11 is provided on the upper housing 10.

[0030] In this embodiment, a water port 3 is provided on the water chamber 13, and the water port 3 extends outside the housing. A fixing block 1 and a sealing block 2 are provided on the water port 3.

[0031] In this embodiment, a low-voltage plug-in 5 and a high-voltage plug-in 6 are provided on the lower housing 14. The low-voltage plug-in 5 is fixed to the lower housing 14 by screws and is wire-connected to low-voltage components such as the internal control circuit and sensors; the high-voltage plug-in 6 is fixed to the lower housing 14 by screws and is wire-connected to high-voltage components such as the internal heating unit and the power switch unit; by separately connecting components of different voltage levels, the low-voltage plug-in 5 and the high-voltage plug-in 6 can effectively prevent electrical faults and simplify the maintenance and repair process.

[0032] In this embodiment, Figure 6 the first connection structure 19 and the second connection structure 20 are locked to each other by plug-in connection.

[0033] It should be particularly noted that in the present invention, the water chambers between the modules communicate vertically, and the number of modules can be stacked according to actual needs.

[0034] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A PTC heater with stackable modules, characterized in that, Comprising more than one water chamber (13) and a heating core component (4); the heating core component (4) comprises more than one regulating unit and more than one PTC core; the water chamber is located outside the heating core component (4); in the heating core component (4), the regulating units and the PTC cores are stacked in sequence.

2. The PTC heater with stackable modules according to claim 1, wherein The water chamber (13) comprises a left water chamber (13.1) and a right water chamber (13.2); the regulating unit comprises a first regulating unit (16) and a second regulating unit (18); the PTC core comprises a first PTC core (15) and a second PTC core (17); the left water chamber (13.1) and the right water chamber (13.2) are located on both sides of the heating core component (4), and inside the heating core component (4), a first regulating unit (16), a first PTC core (15), a second regulating unit (18) and a second PTC core (17) are arranged from top to bottom respectively.

3. The PTC heater with stackable modules according to claim 1, wherein The water chamber (13) and the heating core component (4) are arranged inside a housing, and the housing is composed of an upper housing (10) and a lower housing (14).

4. The PTC heater with stackable modules according to claim 1, characterized in that, Above the heating core component (4), a PBC assembly control board (8) and a heat dissipation board (9) are provided.

5. The PTC heater with stackable modules according to claim 4, wherein The PBC assembly control board (8) is connected to an insulated gate bipolar transistor IGBT (7), and the insulated gate bipolar transistor IGBT (7) is connected to a mounting board (12).

6. The PTC heater with stackable modules according to claim 3, characterized in that, An air vent valve (11) is provided on the upper housing (10).

7. The PTC heater with stackable modules according to claim 1, characterized in that, A water port (3) is provided on the water chamber (13), the water port (3) extends outside the housing, and a fixing block (1) and a sealing block (2) are provided on the water port (3).

8. The PTC heater with stackable modules according to claim 3, characterized in that, A low-voltage plug-in (5) and a high-voltage plug-in (6) are provided on the lower housing (14), and the low-voltage plug-in (5) and the high-voltage plug-in (6) are fixed to the lower housing (14) by screws.

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