A liquid heating device

Abstract

The application relates to the field of liquid heating, in particular to a liquid heating device which comprises a heating assembly and a mounting assembly, the mounting assembly comprises a mounting pipe and pipe joints sealingly mounted at two ends of the mounting pipe; the heating assembly comprises a heating pipe and a heating element, the heating pipe is inserted into the mounting pipe, and the two ends of the heating pipe are sealingly connected with the pipe joints for connecting external water pipe assemblies; a closed heat insulation chamber is formed between the heating pipe and the mounting pipe, and at least one heating element is arranged on the outer wall of the heating pipe, the heating element is used for heating the inside of the heating pipe. The heating device can keep the battery at a more suitable working temperature during the charging process, effectively improves the charging efficiency, and reduces the charging waiting time of the user.

Description

Technical Field

[0001] This application relates to the field of liquid heating, and in particular to a liquid heating device. Background Technology

[0002] With the rapid development of science and technology, new energy technologies have received widespread attention and application globally, especially in the transportation sector, where the emergence and development of new energy battery vehicles have been a milestone. New energy battery vehicles, with their significant advantages in environmental protection and energy conservation, have gradually become one of the important means of transportation for people's daily travel. Their widespread application has not only greatly reduced dependence on traditional fossil fuels and alleviated the energy crisis, but also significantly reduced air pollution, playing a positive and far-reaching role in improving global environmental quality. At the same time, the continuous advancement of new energy battery vehicle technology has also driven the vigorous development of a series of related industries, such as battery research and development, charging pile construction, and intelligent transportation systems, promoting innovation and upgrading of the entire industrial chain and injecting new vitality into economic development. Currently, charging new energy battery vehicles typically involves directly plugging a charger into the vehicle body. This method is relatively simple; users only need to connect the charger to the vehicle body to easily begin the charging process, without requiring any additional disassembly or installation of the battery.

[0003] However, existing charging methods still have significant drawbacks. These mainly manifest in the following ways: New energy vehicle batteries typically have water pipe assemblies for cooling the battery during extended periods of operation. When the vehicle is parked for a long time due to work, travel, or idleness, the battery gradually cools to ambient temperature. If charging is performed directly at this time, the rate of internal chemical reactions in the battery at low temperatures is significantly reduced, leading to increased internal resistance and decreased charging efficiency. This is especially true in cold climates or winter conditions where ambient temperatures may remain below 0°C for extended periods. In such conditions, the battery not only has a low initial temperature but also fails to maintain its optimal operating temperature range due to insufficient heat release from electrochemical reactions during charging, severely impacting charging efficiency. This not only inconveniences users but also increases charging waiting time. Utility Model Content

[0004] In order to improve the charging efficiency of new energy vehicles in low-temperature environments and shorten the charging waiting time, this application provides a liquid heating device.

[0005] This application provides a liquid heating device, including a heating assembly and an installation assembly. The installation assembly includes an installation tube and pipe joints sealed at both ends of the installation tube. The heating assembly includes a heating tube and a heating element. The heating tube is inserted into the installation tube, and its two ends are respectively sealed to the pipe joints for connecting to an external water pipe assembly. A closed heat-insulating chamber is formed between the heating tube and the installation tube. At least one heating element is disposed on the outer wall of the heating tube, and the heating element is used to heat the interior of the heating tube. By adopting the above technical solution, the liquid heating device includes a heating assembly and an installation assembly. The installation tube in the installation assembly has sealed installation pipe joints at both ends, and the heating tube of the heating assembly is inserted into the installation tube and sealed to the pipe joints at both ends. This allows it to be connected to an external water pipe assembly, enabling coolant to flow within it. The heating element is disposed on the outer wall of the heating tube, and the heating element can heat the coolant flowing inside the heating tube. When a new energy battery vehicle is parked for a long time, the battery cools down, and the coolant temperature also decreases. At this time, when the coolant flows through the heating tube, the heat generated by the heating element is transferred to the coolant, causing the coolant temperature to rise. Because a closed heat-insulating chamber is formed between the heating tube and the mounting tube, heat loss is reduced, allowing more heat to be used to heat the coolant. The heated coolant then flows into the battery's water pipe assembly, increasing the battery temperature and preventing problems such as increased internal resistance and decreased charging efficiency at low temperatures. Especially in cold environments or winter, this helps the battery maintain a more suitable operating temperature during charging, effectively improving charging efficiency and reducing user charging waiting time. Preferably, a fixing plate extends from the outer wall of the heating tube, forming a placement groove with the outer wall of the heating tube, into which the heating element is inserted. By adopting the above technical solution, the fixing plate extends from the outer wall of the heating tube, forming a placement groove with the outer wall of the heating tube, into which the heating element is inserted. Since the placement groove is formed by the fixing plate and the outer wall of the heating tube, it provides a relatively fixed installation space for the heating element, preventing it from shaking or shifting during operation. Simultaneously, this arrangement allows the heating element to be closer to the heating tube, enabling more efficient heat transfer to the interior of the heating tube, thereby improving the heating efficiency of the liquid inside the heating tube. Preferably, the heating element includes a thermistor, electrode plates, and an insulating covering structure. The electrode plates cover both the upper and lower surfaces of the thermistor, and the insulating covering structure tightly covers the outer wall of the electrode plates. The electrode plates are electrically connected to an external power source via wires extending into the placement groove. By adopting the above technical solution, the electrode plates cover both the upper and lower surfaces of the thermistor, allowing for sufficient contact between the electrode plates and the thermistor. When the electrode plates are electrically connected to an external power source via wires extending into the placement groove, current can be smoothly conducted through the electrode plates to the thermistor. Due to the thermal effect of the current, the thermistor generates heat.Meanwhile, the insulating covering structure tightly wraps around the outer wall of the electrode plates, enabling the two electrode plates to contact and conduct electricity, and preventing safety issues such as leakage between the electrode plates and the outside world. This ensures the safety of the heating element and achieves safe and effective heating of the liquid inside the heating tube, solving the problem of low battery charging efficiency at low temperatures. Preferably, the thickness of the placement groove is greater than the thickness of the heating element. When the heating element is inserted into the placement groove, the outer wall of the insulating covering structure contacts the groove wall. By adopting the above technical solution, since the thickness of the placement groove is greater than the thickness of the heating element, it is ensured that the outer wall of the insulating covering structure contacts the groove wall when the heating element is inserted into the placement groove. This contact makes the heating effect of the heating element on the liquid inside the heating tube stable, improving the reliability and stability of the liquid heating device. Preferably, the heat insulation chamber is filled with heat insulation material. By adopting the above technical solution, heat insulation material is filled into the heat insulation chamber. Due to the excellent heat insulation performance of the heat insulation material, the heat loss from the heating tube through the installation pipe can be effectively reduced, thereby better retaining the heat inside the heating tube and improving the heating efficiency of the liquid heating device, thus reducing energy waste. Preferably, there are four heating elements and four fixing plates, with each fixing plate corresponding to one of the heating elements. The four heating elements are symmetrically arranged on the outer wall of the heating tube. By adopting the above technical solution, the four heating elements are symmetrically arranged on the outer wall of the heating tube and correspond one-to-one with the four fixing plates. Due to the symmetrical distribution, the heating of all parts of the heating tube is more uniform. The combined action of multiple heating elements can provide greater heating power than a single heating element, thereby raising the temperature of the liquid inside the heating tube more quickly. Therefore, when applied to the water pipe assembly of new energy battery vehicles, it can effectively improve the charging efficiency of the battery in low-temperature environments and reduce charging waiting time. Preferably, a wiring groove is formed between two adjacent fixing plates for laying wires. By adopting the above technical solution, since the fixing plate is set on the outer wall of the heating tube and a wiring groove is formed between two adjacent fixing plates, the electrode plates of the heating element need to be electrically connected to the external power supply through wires. In this way, the wires can be laid in the wiring groove, avoiding the problems of messiness, easy damage, and interference with other components that may be caused by random placement of wires, thus achieving an orderly arrangement of wires. Preferably, the fixing plate has a "U"-shaped structure with the opening facing the inner wall of the heating tube. By adopting the above technical solution, the fixing plate has a "U"-shaped structure with the opening facing the inner wall of the heating tube. This structure makes the placement groove formed by the fixing plate and the outer wall of the heating tube have good capacity, allowing the heating element to be easily inserted into it. The opening of the "U"-shaped structure facing the inner wall of the heating tube allows the heating element to be closer to the heating tube, reducing the distance and loss of heat transfer, thereby transferring the heat generated by the heating element to the inside of the heating tube more efficiently, and thus improving the heating efficiency of the liquid inside the heating tube.Preferably, the heating tube has internal threaded interfaces at both ends, and the pipe connector has an external threaded interface. The external threaded end of the pipe connector is inserted into the mounting tube and threadedly connected to the internal threaded end of the heating tube. By adopting the above technical solution, with internal threaded interfaces at both ends of the heating tube and an external threaded interface on the pipe connector, the external threaded end of the pipe connector is inserted into the mounting tube and threadedly connected to the internal threaded end of the heating tube. This threaded connection method ensures a tight fit between the pipe connector and the heating tube. Because of the interlocking of the threads, liquid leakage from the connection point can be effectively prevented during connection. Simultaneously, the threaded connection facilitates installation and disassembly. When the heating component needs maintenance or replacement, separation can be achieved simply by rotating the pipe connector. During installation, connection is completed by tightening according to the thread direction. The operation is simple and convenient, thereby improving the practicality and maintainability of the liquid heating device. Preferably, the electrode plate is a metal sheet structure, and the thermistor is distributed along the length direction of the electrode plate. By adopting the above technical solution, the electrode sheet uses a metal sheet structure. Metal has good conductivity, and the sheet structure can increase the contact area with the thermistor, allowing the current to pass through the thermistor more evenly. The thermistor is distributed along the length of the electrode sheet, which allows the thermistor to be heated evenly along its length, thereby heating the inside of the heating tube more effectively and improving heating efficiency and heating uniformity.

[0006] In summary, this application includes at least one of the following beneficial technical effects: 1. The heating element is set on the outer wall of the heating tube. After being powered on, the heating element generates heat, which is transferred to the inside of the heating tube and then heats the liquid in the water pipe assembly connected to the heating tube. The heated liquid can raise the temperature of the battery, which solves the problems of reduced internal chemical reaction rate, increased internal resistance and reduced charging efficiency of the battery at low temperature. 2. A closed heat insulation chamber is formed between the heating tube and the mounting tube. The heat insulation chamber can effectively block the heat inside the heating tube from dissipating to the outside, reduce heat loss, make the temperature around the battery more stable, help maintain the battery's optimal operating temperature range, and improve charging efficiency. 3. The heating component is installed inside the installation pipe through a sealed connection of the installation pipe and pipe joint. It can be easily installed with the external water pipe assembly through the pipe joint, which improves the ease of disassembly and reduces maintenance costs. Attached Figure Description

[0007] Figure 1 This is an exploded view of a liquid heating device according to this application; Figure 2 This is a structural diagram of a liquid heating device according to this application; Figure 3 This is a side view of a liquid heating device according to this application; Figure 4yes Figure 3 AA cross-section view.

[0008] Explanation of reference numerals in the attached drawings: 1. Heating component; 2. Mounting component; 3. Insulation chamber; 4. Insulation material; 11. Mounting pipe; 12. Pipe fitting; 111. Sealing cover plate; 112. Mounting hole; 113. Wiring hole; 121. External threaded interface; 21. Heating pipe; 22. Heating element; 211. Internal threaded interface; 212. Fixing plate; 213. Placement groove; 214. Wiring groove; 221. Thermistor; 222. Electrode plate; 223. Insulation covering structure; 224. Wire interface. Detailed Implementation

[0009] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0010] This application provides a liquid heating device, referring to... Figure 1 and Figure 2 The device includes a heating component 1 and a mounting component 2. The heating component 1 is housed in a closed cavity structure inside the mounting component 2. The mounting component 2 is used to connect with an external water pipe assembly. The two work together. Liquid flows through the heating component 1 and heats the flowing liquid, thereby heating the liquid entering the water pipe assembly of the new energy battery vehicle. This keeps the battery at a suitable operating temperature, accelerates the internal chemical reaction rate of the battery, reduces internal resistance, and thus improves the battery charging efficiency.

[0011] Specifically, the installation component 2 in this embodiment includes an installation tube 11 and pipe fittings 12 sealed at both ends of the installation tube 11. Both the installation tube 11 and the pipe fittings 12 are made of metal, such as stainless steel, which has good strength and corrosion resistance. Specifically, sealing caps 111 are provided at both ends of the installation tube 11. An installation hole 112 is provided in the middle of the sealing cap 111. An annular flange is provided on the side of the sealing cap 111 near the installation tube 11, and a sealing ring is provided on the outer wall of the annular flange. By inserting the annular flange into the installation tube 11, the sealing ring on the outer wall of the annular flange is press-fitted with the inner wall of the installation tube 11 to achieve a seal. The pipe fittings 12 extend through the installation hole 112 into the installation tube 11 and connect to the heating component 1. The outer wall of the pipe fittings 12 is sealed to the inner wall of the sealing cap 111 at the installation hole 112. The sealing connection is achieved by welding. Welding allows the pipe fittings 12 and the installation tube 11 to form a strong and sealed connection structure, ensuring that liquid will not leak from the connection. Furthermore, sealant is applied to the weld for a secondary seal. Specifically, the pipe connector 12 is provided with external threaded interfaces 121 at both ends, which are used to connect the heating component 1 and the external water pipe component, respectively, so that the entire liquid heating device can be connected to the water pipe system of the battery vehicle.

[0012] Reference Figure 3 and Figure 4 Specifically, the heating assembly 1 in this embodiment includes a heating tube 21 and heating elements 22. The heating tube 21 is inserted into the mounting tube 11. Both ends of the heating tube 21 are provided with internal thread interfaces 211, which are threaded to the pipe joints 12. A sealing connection is achieved by providing a sealing ring between the internal thread interface 211 of the heating tube 21 and the external thread interface 121 of the mounting tube 11. The heating tube 21 is made of a metal material with good thermal conductivity, such as aluminum alloy, which can quickly transfer heat to the liquid inside. After the heating tube 21 is installed, a closed heat insulation chamber 3 is formed between the heating tube 21 and the mounting tube 11. The heat insulation chamber 3 can be filled with heat insulation material 4. In this embodiment, the heat insulation material 4 is heat insulation cotton, which can effectively reduce heat loss. Of course, in other embodiments, heat insulation materials 4 such as polyurethane foam can also be used. In particular, four heating elements 22 are arranged circumferentially on the outer wall of the heating tube 21. The heating elements 22 are used to heat the inside of the heating tube 21.

[0013] The heating tube 21 has four fixing plates 212 extending from its outer wall. These fixing plates and the outer wall of the heating tube 21 form a placement groove 213. Both ends of the placement groove 213 have openings, allowing the heating element 22 to be inserted into either opening for fixation. The fixing plates 212 are typically made of the same material as the heating tube 21 to ensure good heat conduction. They have a U-shaped structure with the opening facing the inner wall of the heating tube 21. This U-shaped structure allows the heating element 22 to be wrapped and fixed from three directions, making it more stable within the placement groove 213. Each fixing plate 212 corresponds to one heating element 22, with the four heating elements 22 symmetrically arranged on the outer wall of the heating tube 21. This symmetrical arrangement means that the four heating elements 22 are distributed in pairs on the outer wall of the heating tube 21, with the central axis of the heating tube 21 as the center of symmetry, resulting in more uniform heating. A straight cable tray 214 is formed between two adjacent fixing plates 212 for laying wires. Correspondingly, the sealing cover plate 111 of the mounting tube 11 is provided with a cable tray hole 113. The wires pass through the cable tray hole 113 and are sealed by applying glue between the wires and the cable tray hole 113 to prevent liquid from flowing into the heat insulation chamber 3 from the gap between the cable tray hole 113 and the wires.

[0014] Each heating element 22 includes a thermistor 221, electrode plates 222, and an insulating covering structure 223. The thermistor 221 has electrode plates 222 covering both its upper and lower surfaces. The thermistor 221 is distributed along the length of the electrode plates 222. The electrode plates 222 are metal sheet structures, such as copper sheets, and have good conductivity. The insulating covering structure 223 tightly covers the outer wall of the electrode plates 222, providing insulation and protection. It can be made of rubber or plastic. After the insulating covering structure 223 is completed, one end of the two electrode plates 222 is tightly pressed together, enabling conductivity between them. Both electrode plates 222 are provided with wire interfaces 224 for connecting wires. The insulating covering structure 223 also covers the wire interfaces 224, allowing the wire interfaces 224 of both electrode plates 222 to be electrically connected to wires extending into the placement groove 213, thus enabling the electrode plates 222 to be electrically connected to an external power source. When current passes through electrode 222, the thermistor 221 heats up, thereby heating the liquid inside heating tube 21.

[0015] The thickness of the placement groove 213 is greater than the overall thickness of the heating element 22, ensuring that the heating element 22 can be inserted into the placement groove 213. When the heating element 22 is inserted into the placement groove 213, the outer wall of the insulating covering structure 223 contacts the groove wall of the placement groove 213. This structural design prevents the heating element 22 from wobbling in the placement groove 213 due to its excessive thickness. Simultaneously, the contact between the insulating covering structure 223 and the groove wall ensures better heat transfer from the heating element 22 to the heating tube 21, and further enhances the stability of the heating element 22 installation. Specifically, since the fixing plate 212 is made of metal, when the heating element 22 is inserted into the placement groove 213, the outer wall of the fixing plate 212 can be pressed by a pressing machine, causing a slight deformation of the fixing plate 212 towards the heating element 22. This allows the heating element 22 to better contact the outer wall of the heating tube 21, improving the heating effect.

[0016] The implementation principle of this embodiment is as follows: the liquid heating device, through the cooperation of the heating component 1 and the mounting component 2, transfers the heat generated by the heating element 22 to the liquid inside the heating pipe 21. The installation of the heat insulation chamber 3 and the heat insulation material 4 reduces heat loss and improves energy utilization efficiency. The symmetrical distribution of multiple heating elements 22 makes the heating more uniform and can heat the liquid quickly and effectively. By connecting to the battery vehicle water pipe assembly through the pipe connector 12, the heated liquid can be transported to the battery cooling system, allowing the battery to maintain a suitable operating temperature when charging in a low-temperature environment, improving charging efficiency, and solving the problem of low charging efficiency in existing new energy battery vehicles at low temperatures.

[0017] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid heating device, characterized in that, The assembly includes a heating component (1) and an installation component (2). The installation component (2) includes an installation tube (11) and pipe fittings (12) sealed at both ends of the installation tube (11). The heating component (1) includes a heating tube (21) and a heating element (22). The heating tube (21) is inserted into the installation tube (11), and its two ends are respectively sealed to the pipe fittings (12) for connecting external water pipe assemblies. A closed heat insulation chamber (3) is formed between the heating tube (21) and the installation tube (11). At least one heating element (22) is provided on the outer wall of the heating tube (21), and the heating element (22) is used to heat the inside of the heating tube (21).

2. The liquid heating device according to claim 1, characterized in that, A fixing plate (212) is provided on the outer wall of the heating tube (21). The fixing plate (212) and the outer wall of the heating tube (21) form a placement groove (213). The heating element (22) is inserted into the placement groove (213).

3. The liquid heating device according to claim 2, characterized in that, The heating element (22) includes a thermistor (221), an electrode plate (222), and an insulating covering structure (223). The upper and lower surfaces of the thermistor (221) are covered with the electrode plate (222). The insulating covering structure (223) tightly covers the outer wall of the electrode plate (222). The electrode plate (222) is electrically connected to an external power source through a wire extending into the placement groove (213).

4. The liquid heating device according to claim 3, characterized in that, The thickness of the placement groove (213) is greater than the thickness of the heating element (22). When the heating element (22) is inserted into the placement groove (213), the outer wall of the insulating covering structure (223) contacts the groove wall of the placement groove (213).

5. The liquid heating device according to claim 1, characterized in that, The insulation chamber (3) is filled with insulation material (4).

6. The liquid heating device according to claim 3, characterized in that, The number of heating elements (22) is four, the number of fixing plates (212) is four, the fixing plates (212) correspond one-to-one with the heating elements (22), and the four heating elements (22) are symmetrically arranged on the outer wall of the heating tube (21).

7. The liquid heating device according to claim 6, characterized in that, A wiring trough (214) is formed between two adjacent fixing plates (212), and the wiring trough (214) is used to lay wires.

8. The liquid heating device according to claim 2, characterized in that, The fixing plate (212) has a "U" shaped structure with the opening facing the inner wall of the heating tube (21).

9. The liquid heating device according to claim 1, characterized in that, The heating tube (21) has internal threaded interfaces (211) at both ends, and the pipe joint (12) has external threaded interfaces (121). The external threaded interface (121) end of the pipe joint (12) is inserted into the installation tube (11) and threadedly connected to the internal threaded interface (211) end of the heating tube (21).

10. The liquid heating device according to claim 3, characterized in that, The electrode sheet (222) is a metal sheet structure, and the thermistor (221) is distributed along the length of the electrode sheet (222).

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