A PTC heating pack for water heating of new energy vehicles

Abstract

The utility model discloses a PTC heating pack for water heating of new energy vehicles, which relates to the field of PTC heating technology. It includes a main body component, the outer walls on both sides of the main body component are fixedly connected with a shell component, and the outer walls on both sides of the shell component are fixedly connected with a temperature measuring component for heat reflux detection, the top outer wall of the main body component is fixedly connected with a current component for adjusting the current size, and the PTC heating element body is placed between the inner walls around the main body component; the temperature measuring component includes a plurality of heat transfer boxes. The utility model pours the coolant in the water tank into the heat transfer box through the water inlet pipe, and returns it to the water tank through the water outlet pipe. At this time, the heat transfer box will transfer the specific water temperature in the water tank to the temperature measuring plate, and adjust the current size transferred to the PTC heating element body through the current component, so as to achieve the temperature synchronization of the PTC heating element body and the water tank.

Description

Technical Field

[0001] The utility model relates to the technical field of PTC heating, in particular to a PTC heating pack for water heating of new energy vehicles. Background Art

[0002] PTC heating element, also called PTC heater, is composed of PTC ceramic heating element and aluminum tube. This type of PTC heating element has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving electric heater. The outstanding feature is safety performance. When new energy vehicles are started in a low temperature environment, the efficiency of the battery and power system is affected by the temperature, which may cause problems such as cold start difficulty and increased energy loss. At this time, it is necessary to use PTC heating packs to heat some components in the vehicle.

[0003] Patent publication number CN207274336U is a PTC water heating device for new energy electric vehicles. It uses electricity as energy and a PTC heating element as a heating body. The PTC heating element is effectively connected to the injection molded electrode sheet and the electrode sheet b through a certain adhesive with good thermal conductivity. It has good thermal conductivity and provides warm air to the car through the evaporator by heating the coolant. It is safe, comfortable, energy-saving and efficient.

[0004] During the use of the above-mentioned and similar technical solutions, the external temperature will change due to different external environments. At this time, after the PTC heating pack completes a set of work processes, the temperature transmitted to the water tank will be affected by the ambient temperature, resulting in the temperature of the water tank or coolant not reaching the ideal working temperature when the PTC heating pack reaches the critical load, or the water tank or coolant has reached the ideal working temperature, but the PTC heating pack is still working until the load is reached. Utility Model Content

[0005] The purpose of the utility model is to provide a PTC heating pack for water heating of new energy vehicles to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PTC heating pack for water heating of new energy vehicles, comprising a main body component, both side outer walls of the main body component are fixedly connected with a shell component, and both side outer walls of the shell component are fixedly connected with a temperature measuring component for heat reflux detection, the top outer wall of the main body component is fixedly connected with a current component for adjusting the current size, and a PTC heating element body is placed between the inner walls around the main body component;

[0007] The temperature measuring assembly includes a plurality of heat transfer boxes, and the heat transfer boxes are respectively fixedly connected to the outer wall of one side of the shell assembly, a plurality of temperature measuring plates are fixedly connected to the outer wall of one side of the shell assembly, and the heat transfer boxes are in contact with the temperature measuring plates, connecting pipes are fixedly connected between the heat transfer boxes, and one end outer wall of two of the heat transfer boxes is fixedly connected to a water inlet pipe, and one end outer wall of two of the heat transfer boxes is fixedly connected to a water outlet pipe.

[0008] Furthermore, the main component includes a frame and a fixing frame, and the fixing frame is fixedly connected between the four inner walls of the frame, the outer walls at both ends of the top and bottom of the fixing frame are fixedly connected with power connection plates, and the outer wall at one end of the PTC heating element body is fixedly connected with a docking plate corresponding to the power connection plate.

[0009] Furthermore, a plurality of slots are formed on one outer wall of the frame, and buckles matching the slots are fixedly connected to one outer wall of the PTC heating element body, and a plurality of limit plates in contact with the PTC heating element body are fixedly connected to the other outer wall of the frame.

[0010] Furthermore, the current component includes a resistance adjustment plate, and the resistance adjustment plate is fixedly connected to the top outer wall of the frame, the resistance adjustment plate is electrically connected to the temperature measuring plate and the electrical connection plate, and the outer walls at both ends of the top of the resistance adjustment plate are electrically and fixedly connected to electrical terminals.

[0011] Furthermore, the shell assembly includes a first shell and a second shell, and the first shell and the second shell are respectively fixedly connected to the outer walls of both sides of the frame, and the inner walls of one side of the first shell and the second shell are fixedly connected with multiple inner plates in contact with the PTC heating element body.

[0012] Furthermore, the other side outer walls of the first shell and the second shell are both fixedly connected with a heat conducting plate, and the temperature measuring plate and the heat transfer box are both fixedly connected to the other side outer walls of the first shell and the second shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] A PTC heating pack for heating water in new energy vehicles uses a temperature measuring plate to allow the coolant in the water tank to be poured into the heat transfer box through the water inlet pipe during the operation of the PTC heating element body, and then flows back to the water tank through the water outlet pipe. At this time, the heat transfer box will transfer the specific water temperature in the water tank to the temperature measuring plate, and adjust the current transmitted to the PTC heating element body through the current component, thereby achieving temperature synchronization between the PTC heating element body and the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2It is a schematic diagram of the back structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall explosion structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the main component structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the limit plate structure of the utility model.

[0020] In the figure: 1. Main body assembly; 101. Frame; 102. Fixing frame; 103. Power connection plate; 104. PTC heating element body; 105. Buckle; 106. Docking plate; 107. Limiting plate; 2. Current assembly; 201. Resistance adjustment plate; 202. Power connection head; 3. Temperature measuring assembly; 301. Heat transfer box; 302. Temperature measuring plate; 303. Water inlet pipe; 4. Shell assembly; 401. First shell; 402. Second shell; 403. Inner plate; 404. Heat conduction plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Since the principle of the PTC heating pack is to use external current to pass through the PTC material and generate heat, when the temperature rises to the critical temperature of the PTC material, the resistance of the material increases sharply, resulting in a decrease in the current passing through the material, thereby reducing heat generation. In actual use, the external temperature will be affected by the ambient temperature and cannot be perfectly coordinated with the PTC heating pack after the entire work process of the PTC heating pack is completed. Therefore, it is necessary to monitor the temperature of the water tank at all times and adjust the working current and working time of the PTC heating pack according to the real-time temperature of the water tank.

[0023] like Figure 1-Figure 5As shown, the utility model provides a technical solution: a PTC heating pack for water heating of a new energy vehicle, comprising a main body component 1, both side outer walls of the main body component 1 are fixedly connected with a shell component 4, and both side outer walls of the shell component 4 are fixedly connected with a temperature measuring component 3 for detecting heat reflux, the top outer wall of the main body component 1 is fixedly connected with a current component 2 for adjusting the current, and a PTC heating element body 104 is placed between the inner walls around the main body component 1; the temperature measuring component 3 comprises a plurality of heat transfer boxes 301, and the heat transfer boxes 301 are respectively fixedly connected to one side outer wall of the shell component 4, and one side outer wall of the shell component 4 is fixedly connected with a plurality of temperature measuring plates 302, and the heat transfer boxes 301 are all in contact with the temperature measuring plates 302, and connecting pipes are fixedly connected between the heat transfer boxes 301, and one end outer walls of two heat transfer boxes 301 are fixedly connected with a water inlet pipe 303, and one end outer walls of two heat transfer boxes 301 are fixedly connected with a water outlet pipe.

[0024] It should be noted that when the external current enters the main component 1 through the current component 2, the current passes through the PTC heating element body 104, causing the PTC heating element body 104 to heat up, and the generated heat is transferred to the shell component 4, and heats the water tank and other components in contact with the shell component 4. In the process of the operation of the PTC heating element body 104, the coolant in the water tank is poured into the heat transfer box 301 through the water inlet pipe 303, and flows back to the water tank through the water outlet pipe. At this time, the heat transfer box 301 will transfer the specific water temperature in the water tank to the temperature measuring plate 302, and adjust the current transmitted to the PTC heating element body 104 through the current component 2.

[0025] like Figure 4 As shown, the main component 1 includes a frame 101 and a fixing frame 102, and the fixing frame 102 is fixedly connected between the inner walls of the frame 101, the outer walls at both ends of the top and bottom of the fixing frame 102 are fixedly connected with power connection plates 103, and the outer wall at one end of the PTC heating element body 104 is fixedly connected with a docking plate 106 corresponding to the power connection plate 103.

[0026] like Figure 4 As shown, a plurality of slots are formed on one side outer wall of the frame 101, and buckles 105 matching the slots are fixedly connected to one side outer wall of the PTC heating element body 104, and a plurality of limit plates 107 in contact with the PTC heating element body 104 are fixedly connected to the other side outer wall of the frame 101.

[0027] It should be noted that when disassembling the PTC heating element body 104 , it can be removed by the buckle 105 , and the limiting plate 107 can assist in positioning the PTC heating element body 104 .

[0028] like Figure 1As shown, the current component 2 includes a resistance adjustment plate 201, and the resistance adjustment plate 201 is fixedly connected to the top outer wall of the frame 101, the resistance adjustment plate 201 is electrically connected to the temperature measuring plate 302 and the power connection plate 103, and the outer walls at both ends of the top of the resistance adjustment plate 201 are electrically fixedly connected to the power connection head 202.

[0029] It should be noted that the resistance adjustment plate 201 can adjust the resistance entering the electrical connector 202 , thereby adjusting the current entering the PTC heating element body 104 .

[0030] like Figure 1-Figure 2 As shown, the shell assembly 4 includes a first shell 401 and a second shell 402, and the first shell 401 and the second shell 402 are respectively fixedly connected to the outer walls on both sides of the frame 101, and the inner walls on one side of the first shell 401 and the second shell 402 are fixedly connected with multiple inner plates 403 in contact with the PTC heating element body 104.

[0031] like Figure 1 As shown, the other outer walls of the first shell 401 and the second shell 402 are both fixedly connected with a heat conducting plate 404 , and the temperature measuring plate 302 and the heat transfer box 301 are both fixedly connected to the other outer walls of the first shell 401 and the second shell 402 .

[0032] It should be noted that the inner plate 403 in contact with the PTC heating element body 104 can transfer the temperature generated by the PTC heating element body 104 during operation to the housing assembly 4 , and further transfer the heat out through the heat conducting plate 404 .

[0033] Working principle: When external current enters the main component 1 through the current component 2, the current passes through the PTC heating element body 104, causing the PTC heating element body 104 to heat up. The inner plate 403 in contact with the PTC heating element body 104 can transfer the temperature generated by the PTC heating element body 104 during operation to the shell component 4, and further transfer the heat through the heat conduction plate 404, and heat the water tank and other components in contact with the shell component 4. In the process of the operation of the PTC heating element body 104, the coolant in the water tank is poured into the heat transfer box 301 through the water inlet pipe 303, and flows back to the water tank through the water outlet pipe. At this time, the heat transfer box 301 will transfer the specific water temperature in the water tank to the temperature measuring plate 302, and the resistance adjustment plate 201 can adjust the resistance entering the electrical connector 202.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A PTC heating pack for water heating of a new energy vehicle, comprising a main component (1), characterized in that: The outer walls on both sides of the main component (1) are fixedly connected to the shell components (4), and the temperature measuring components (3) for detecting heat reflux are fixedly connected between the outer walls on both sides of the shell components (4); the top outer wall of the main component (1) is fixedly connected to the current component (2) for adjusting the current size; and the PTC heating element body (104) is placed between the inner walls around the main component (1); The temperature measuring component (3) comprises a plurality of heat transfer boxes (301), and the heat transfer boxes (301) are respectively fixedly connected to an outer wall of one side of the shell component (4), a plurality of temperature measuring plates (302) are fixedly connected to an outer wall of one side of the shell component (4), and the heat transfer boxes (301) are in contact with the temperature measuring plates (302), a connecting pipe is fixedly connected between the heat transfer boxes (301), and one end outer wall of two of the heat transfer boxes (301) is fixedly connected to a water inlet pipe (303), and one end outer wall of the two heat transfer boxes (301) is fixedly connected to a water outlet pipe.

2. A PTC heating pack for water heating of a new energy vehicle according to claim 1, characterized in that: The main body component (1) comprises a frame (101) and a fixing frame (102), wherein the fixing frame (102) is fixedly connected between the inner walls of the frame (101) on four sides, the outer walls at both ends of the top and bottom of the fixing frame (102) are fixedly connected with power connection plates (103), and the outer wall at one end of the PTC heating element body (104) is fixedly connected with a docking plate (106) corresponding to the power connection plate (103).

3. A PTC heating pack for water heating of a new energy vehicle according to claim 2, characterized in that: A plurality of slots are formed on one side outer wall of the frame (101), and buckles (105) matching the slots are fixedly connected to one side outer wall of the PTC heating element body (104), and a plurality of limit plates (107) in contact with the PTC heating element body (104) are fixedly connected to the other side outer wall of the frame (101).

4. A PTC heating pack for water heating of a new energy vehicle according to claim 1, characterized in that: The current component (2) comprises a resistance adjustment plate (201), and the resistance adjustment plate (201) is fixedly connected to the top outer wall of the frame (101), the resistance adjustment plate (201) is electrically connected to the temperature measuring plate (302) and the electrical connection plate (103), and the outer walls at both ends of the top of the resistance adjustment plate (201) are both electrically and fixedly connected to electrical terminals (202).

5. A PTC heating pack for water heating of a new energy vehicle according to claim 1, characterized in that: The shell assembly (4) comprises a first shell (401) and a second shell (402), wherein the first shell (401) and the second shell (402) are respectively fixedly connected to the outer walls on both sides of the frame (101), and a plurality of inner plates (403) in contact with the PTC heating element body (104) are fixedly connected to the inner walls on one side of the first shell (401) and the second shell (402).

6. A PTC heating pack for water heating of a new energy vehicle according to claim 5, characterized in that: The other side outer walls of the first shell (401) and the second shell (402) are both fixedly connected with a heat conducting plate (404), and the temperature measuring plate (302) and the heat transfer box (301) are both fixedly connected to the other side outer walls of the first shell (401) and the second shell (402).

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