Vehicle heating sensor with bimetallic strip temperature control switch

Abstract

The utility model relates to the technical field of temperature sensors, in particular to a vehicle heating sensor with a bimetallic strip temperature control switch. According to the technical scheme, a temperature sensor is installed on a bottom plate, a protective cover is rotatably installed on the bottom plate and located on the outer side of the temperature sensor, a vapor chamber is inlaid in the bottom plate, a bimetallic strip temperature controller is installed on the bottom plate and located on one side of the temperature sensor, a first wiring electrode is arranged at one end of the bimetallic strip temperature controller, and a second wiring electrode is arranged at the other end of the bimetallic strip temperature controller. The top end of the temperature sensor is provided with a signal output electrode, and the top end of the bimetallic strip temperature controller is provided with a second wiring electrode. According to the utility model, the cooperative work of the temperature sensor and the bimetallic strip temperature controller is realized, and the problem that the existing device lacks the capability of automatically adjusting or controlling the circuit according to the monitored temperature is effectively solved. The accuracy and the timeliness of temperature monitoring are improved, and the stability and the reliability of the sensor in the vehicle driving process are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensors, in particular to a vehicle heating sensor with a bimetallic temperature control switch. Background Art

[0002] New energy vehicles, a trend in today's automotive industry, are receiving significant attention from various countries. Many countries have already included new energy vehicles in their national key development strategies and formulated a series of industrial policies to promote their more efficient development. Therefore, in order for my country's new energy vehicles to occupy a place in the overall market, research on their current development status and future development trends is of certain practical significance. Currently, a technical pain point for new energy vehicles is that their battery packs are essentially unable to start and provide power in extremely cold regions, such as Northeast China. Therefore, existing technologies propose using fuel heaters to heat the battery packs at low temperatures. Temperature sensors, as essential electronic components in new energy vehicles, are becoming increasingly important in vehicles.

[0003] After searching, the patent with patent announcement number CN202211594450.9 discloses a temperature sensor for a new energy vehicle heater. Although the device drives the temperature sensor body forward through the connection box to be removed for replacement during use, which improves the stability of the temperature sensor body and prevents the temperature sensor body from falling off from one side of the heater housing and being broken, and can quickly replace the damaged temperature sensor body, the main function of the device during use is to monitor the temperature and to easily replace the temperature sensor body through the connection box, thereby improving its stability. However, it lacks the ability to automatically adjust or control the circuit according to the monitored temperature. This means that even if the temperature reaches a critical point that may cause safety problems or affect the performance of the equipment, the sensor cannot take proactive measures, such as cutting off the circuit, to prevent potential problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a vehicle heating sensor with a bimetallic temperature control switch, which solves the problems raised in the background art.

[0005] The utility model solves the above-mentioned technical problems as follows:

[0006] A vehicle heating sensor with a bimetallic temperature control switch comprises a base plate, a temperature sensor is mounted on the base plate, and a protective cover is rotatably mounted on the outside of the temperature sensor on the base plate;

[0007] A heat spreader is embedded in the bottom plate, and a bimetallic thermostat is installed on one side of the temperature sensor on the bottom plate. A first wiring electrode is provided at one end of the bimetallic thermostat, a signal output electrode is provided at the top of the temperature sensor, and a second wiring electrode is provided at the top of the bimetallic thermostat.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a wire inlet is provided through the shield, the wire inlet is located at the center of the shield, and fixing plates are provided on both sides of the wire inlet of the shield.

[0010] The beneficial effects of adopting the above further scheme are:

[0011] The cable entry design allows for easy access to the shield for connection to components such as the temperature sensor and bimetallic thermostat. This simplifies cable entry and improves installation efficiency. The shield provides additional protection for the wires and connection points, preventing damage from vibration, friction, or compression during vehicle operation, thereby extending the service life of the wires and improving system reliability.

[0012] Furthermore, the fixing plate is provided with a magnet, and the two fixing plates on the bottom plate are fixed by adsorption of the magnet.

[0013] The beneficial effects of adopting the above further scheme are:

[0014] The magnetic attachment method eliminates the need for fasteners such as screws and nuts, making installation and removal much simpler and faster. This reduces installation costs and improves work efficiency. The magnetic attachment method also facilitates opening and closing of the cover, helping to ensure accurate installation and effective operation of components such as temperature sensors and bimetallic thermostats.

[0015] Furthermore, a rotating shaft is installed at the bottom end of the shield, and the shield is rotatably installed at the two ends of the base plate through the rotating shaft.

[0016] The beneficial effects of adopting the above further scheme are:

[0017] The hinge design allows the shield to be easily rotated open or closed, making it easier for operators to inspect, replace, or maintain internal components such as the temperature sensor and bimetallic thermostat. This design reduces maintenance effort and improves work efficiency. The hinge design typically provides a certain strength and rigidity to ensure the shield remains stable during rotation. This helps prevent the shield from falling off or being damaged by vibration or impact, thereby improving the stability and reliability of the heating sensor.

[0018] Furthermore, the temperature sensor and the bimetallic thermostat are mounted on the base plate by bolts.

[0019] The beneficial effects of adopting the above further scheme are:

[0020] Bolted connections are a very stable connection method, capable of withstanding significant tension and compression. Bolting the temperature sensor and bimetallic thermostat to the baseplate prevents them from falling off or loosening due to vibration or impact during use, thereby ensuring measurement accuracy and system stability. Bolted connections also offer easy disassembly. If the temperature sensor or bimetallic thermostat malfunctions or requires maintenance, operators can easily remove these components by unscrewing the bolts for necessary repairs or replacements. This reduces maintenance costs and improves work efficiency.

[0021] Furthermore, the bimetallic thermostat is provided with a fixing seat, and the bimetallic thermostat is fixedly mounted on the base plate through the fixing seat.

[0022] The beneficial effects of adopting the above further scheme are:

[0023] Mounting the bimetallic thermostat to the baseplate via a mounting bracket ensures it won't fall off or loosen due to vibration or impact during vehicle operation. This mounting method provides greater stability, ensuring the accuracy and reliability of the thermostat. The mounting bracket design also makes disassembly and maintenance of the bimetallic thermostat easier. When repairs or replacements are necessary, operators can easily remove the thermostat by disassembling the mounting bracket for necessary inspection and repairs. This reduces maintenance effort and improves work efficiency.

[0024] Furthermore, the vapor chamber is convex, and the temperature measuring surfaces of the temperature sensor and the bimetallic temperature controller are in contact with the vapor chamber.

[0025] The beneficial effects of adopting the above further scheme are:

[0026] The design of the convex heat spreader makes its surface area relatively large, which can better contact the heat source and absorb heat. At the same time, the heat spreader contains a phase-change heat transfer medium inside, which can quickly and evenly distribute heat across the entire surface of the plate. Therefore, when the temperature measuring surface of the temperature sensor and the bimetallic thermostat contacts the heat spreader, it can more accurately reflect the actual temperature of the heat source and improve the accuracy of temperature measurement. The increased contact area between the convex heat spreader and the heat source is conducive to the rapid transfer of heat. At the same time, the phase-change heat transfer medium inside the heat spreader can further improve the heat conduction efficiency during the process of endothermic evaporation and exothermic liquefaction. This enables the temperature sensor and bimetallic thermostat to respond to temperature changes more quickly, improving the response speed and sensitivity of the system.

[0027] The utility model provides a vehicle heating sensor with a bimetallic temperature control switch. It has the following beneficial effects:

[0028] This sensor combines a temperature sensor with a bimetallic thermostat to precisely monitor and control temperature. The bimetallic thermostat deforms according to temperature changes, switching the circuit on and off, ensuring the heating system operates within the set temperature range and improving system stability and reliability.

[0029] The sensor's overall design is compact. The rational layout and installation of components such as the baseplate, shield, temperature sensor, and bimetallic thermostat result in a compact and compact device, making it easy to install within the limited space within a vehicle. Furthermore, the shield is pivotally mounted to the baseplate, allowing for easy opening and closing, facilitating replacement and maintenance of the temperature sensor.

[0030] The shield not only protects the temperature sensor but also secures it with magnets, enhancing the stability and safety of the device. Even when the vehicle experiences bumps or vibrations during driving, the shield remains securely attached to the chassis, preventing the temperature sensor from falling off or being damaged.

[0031] The heat spreader embedded in the bottom plate can evenly distribute the heat, so that the temperature measuring surface of the temperature sensor and bimetallic thermostat can more accurately reflect the actual temperature, thereby improving the accuracy and reliability of temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0033] In the attached figure:

[0034] Figure 1 This is a schematic diagram of the main appearance of the utility model;

[0035] Figure 2 This is a schematic diagram of the appearance of the present invention when viewed from above;

[0036] Figure 3 This is a schematic diagram of the main appearance of the base plate of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0038] 1. Base plate; 101. Heat sink; 2. Temperature sensor; 201. First wiring electrode; 202. Signal output electrode; 3. Protective cover; 301. Wire inlet; 302. Fixing plate; 4. Bimetallic thermostat; 401. Fixing base; 402. Second wiring electrode. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1 to 3 As shown, the embodiment provided by the utility model:

[0041] Example 1: A vehicle heating sensor with a bimetallic temperature control switch includes a base plate 1, on which a temperature sensor 2 is mounted. A shield 3 is rotatably mounted on the base plate 1, located outside the temperature sensor 2. A rotating shaft is mounted at the bottom end of the shield 3, which is rotatably mounted at both ends of the base plate 1. The shaft design of the shield 3 enables easy opening and closing, greatly facilitating the operator's inspection, replacement, or maintenance of internal components such as the temperature sensor 2 and bimetallic thermostat 4. This design reduces the difficulty of maintenance operations and significantly improves work efficiency. At the same time, the shaft design has a certain strength and rigidity, which can ensure the stability of the shield 3 during rotation, effectively preventing it from falling off or being damaged due to vibration or impact, thereby improving the stability and reliability of the heating sensor. The shield 3 is penetrated by a wire inlet 301, which is located at the center of the shield 3. The shield 3 is also provided with fixing plates 302 on both sides of the wire inlet 301. The wire inlet 301 has been carefully designed to ensure that the wires can be easily connected to the interior of the shield 3 and effectively connected to key components such as the temperature sensor 2 and the bimetallic thermostat 4. This design significantly simplifies the wire access process and improves the efficiency of the installation operation. At the same time, the introduction of the shield 3 provides an additional protective barrier for the wires and their connection points, effectively resisting external forces such as vibration, friction, and extrusion that may be encountered during vehicle operation, thereby extending the service life of the wires and enhancing the reliability of the entire system. The fixing plate 302 is provided with a magnet, and the two fixing plates 302 on the base plate 1 are fixed by magnet adsorption. The use of magnet adsorption fixation eliminates the need for traditional fasteners such as screws and nuts, thereby simplifying the installation and removal process, reducing costs, and improving work efficiency. In addition, this mechanism also facilitates the opening and closing operation of the shield 3, helping to ensure the precise installation and efficient operation of components such as the temperature sensor 2 and the bimetallic thermostat 4.

[0042] Example 2: In order to automatically control the circuit according to the temperature, for example, Figures 1 to 3As shown, the present invention also includes: a heat spreader 101 is embedded on the base plate 1, and a bimetallic thermostat 4 is installed on the base plate 1 on one side of the temperature sensor 2. The heat spreader 101 is convex, and the temperature measuring surfaces of the temperature sensor 2 and the bimetallic thermostat 4 are in contact with the heat spreader 101. The convex design of the heat spreader 101 increases its surface area, thereby enhancing the contact effect with the heat source and improving the heat absorption capacity. At the same time, the phase change heat transfer medium filled inside the heat spreader 101 can quickly and evenly distribute heat across the entire plate surface. Therefore, when the temperature measuring surfaces of the temperature sensor 2 and the bimetallic thermostat 4 are in close contact with the heat spreader 101, they can more accurately reflect the actual temperature of the heat source, improving the accuracy of temperature measurement. In addition, the increased contact area between the convex heat spreader 101 and the heat source is conducive to rapid heat transfer. At the same time, the efficient action of the phase change heat transfer medium inside the heat spreader 101 during the heat absorption evaporation and heat release liquefaction processes further improves the heat conduction efficiency. This allows the temperature sensor 2 and bimetallic thermostat 4 to respond more quickly to temperature changes, improving the system's response speed and sensitivity. The temperature sensor 2 and bimetallic thermostat 4 are mounted on the base plate 1 via bolts. Bolted connections, as a highly stable connection, can withstand significant tension and pressure. Bolting the temperature sensor 2 and bimetallic thermostat 4 securely to the base plate 1 ensures they will not fall off or loosen due to vibration or impact during use, thereby ensuring measurement accuracy and system stability. Furthermore, the easily removable nature of the bolted connection allows the temperature sensor 2 or bimetallic thermostat 4 to be easily removed for necessary repair or replacement when a malfunction or maintenance is required, thereby reducing maintenance costs and improving work efficiency. The bimetallic thermostat 4 is provided with a fixing base 401, which secures the bimetallic thermostat 4 to the base plate 1. Mounting the bimetallic thermostat 4 on the base plate 1 via the fixing base 401 ensures the thermostat's stability during vehicle operation and prevents it from falling off or loosening due to vibration or impact. This installation method provides greater stability, ensuring the accuracy and reliability of the thermostat. Furthermore, the design of the mounting base 401 makes disassembly and maintenance of the bimetallic thermostat 4 easier and faster, reducing maintenance difficulty and improving work efficiency. A first wiring electrode 201 is provided at one end of the bimetallic thermostat 4, a signal output electrode 202 is provided at the top of the temperature sensor 2, and a second wiring electrode 402 is provided at the top of the bimetallic thermostat 4.

[0043] Working principle:

[0044] The temperature sensor 2 is responsible for monitoring the temperature of the heating system or the surrounding environment and converting it into an electrical signal. This electrical signal can be output through the signal output electrode 202 for use by subsequent circuits or control systems.

[0045] The bimetallic thermostat 4 is constructed by bonding two metal sheets with different thermal expansion coefficients. When the temperature changes, the two sheets deform differently due to the different thermal expansion coefficients, causing the bimetallic strip to bend as a whole. Under normal operating conditions, the two ends of the bimetallic thermostat 4 are connected in series to the heating system's power circuit. When the temperature reaches the set point, the bimetallic strip bends, disconnecting the previously contacting contacts (or electrodes), thereby shutting off the heating system's power supply and achieving temperature control. Conversely, when the temperature drops below the set point, the bimetallic strip returns to its original shape, the contacts reclose, and the heating system resumes operation.

[0046] Vapor chamber 101 is convex in design, with its surface in contact with the temperature measurement surfaces of temperature sensor 2 and bimetallic thermostat 4. Vapor chamber 101 evenly distributes heat, allowing temperature sensor 2 and bimetallic thermostat 4 to more accurately reflect the actual temperature. This helps improve temperature measurement accuracy and control precision.

[0047] The shield 3 is rotatably mounted on the base plate 1 via a rotating shaft, allowing it to be opened and closed. When closed, it protects the temperature sensor 2 and bimetallic thermostat 4 from external interference or damage. Furthermore, the design of the wire inlet 301 and fixing plate 302 on the shield 3 facilitates the insertion and securing of wires.

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A vehicle heating sensor with a bimetallic temperature control switch, comprising a base plate (1), a temperature sensor (2) mounted on the base plate (1), and a shield (3) rotatably mounted on the base plate (1) outside the temperature sensor (2), characterized in that: A heat spreader (101) is embedded on the base plate (1), a bimetallic temperature controller (4) is installed on one side of the temperature sensor (2) on the base plate (1), a first wiring electrode (201) is provided at one end of the bimetallic temperature controller (4), a signal output electrode (202) is provided at the top end of the temperature sensor (2), and a second wiring electrode (402) is provided at the top end of the bimetallic temperature controller (4).

2. The vehicle heating sensor with a bimetallic temperature control switch according to claim 1, characterized in that: A wire inlet (301) is provided through the shield (3), the wire inlet (301) is located at the center of the shield (3), and fixing plates (302) are provided on both sides of the shield (3) at the wire inlet (301).

3. The vehicle heating sensor with a bimetallic temperature control switch according to claim 2, characterized in that: The fixing plate (302) is provided with a magnet, and the two fixing plates (302) on the bottom plate (1) are fixed by adsorption of the magnet.

4. The vehicle heating sensor with a bimetallic temperature control switch according to claim 1, characterized in that: A rotating shaft is installed at the bottom end of the shield (3), and the shield (3) is rotatably installed at the two ends of the base plate (1) via the rotating shaft.

5. The vehicle heating sensor with a bimetallic temperature control switch according to claim 1, characterized in that: The temperature sensor (2) and the bimetallic thermostat (4) are mounted on the base plate (1) via bolts.

6. The vehicle heating sensor with a bimetallic temperature control switch according to claim 1, characterized in that: A fixing seat (401) is provided on the bimetallic thermostat (4), and the bimetallic thermostat (4) is fixedly mounted on the base plate (1) via the fixing seat (401).

7. The vehicle heating sensor with a bimetallic temperature control switch according to claim 1, characterized in that: The heat spreader (101) is convex, and the temperature measuring surfaces of the temperature sensor (2) and the bimetallic temperature controller (4) are in contact with the heat spreader (101).

Images