Temperature sensor for air-cooled fuel cell stack

Abstract

The utility model discloses a kind of air-cooled fuel cell stack temperature sensors, it is related to temperature sensor technical field, including sensor main body and mounting seat, the inside of sensor main body is provided with temperature measurement chip assembly, and temperature measurement chip assembly is fixedly connected with sensor main body, the side of sensor main body is provided with cable, and cable is electrically connected with temperature measurement chip assembly, the bottom of sensor main body is provided with probe rod, and probe rod is connected with temperature measurement chip assembly as a whole, the lower end of probe rod is provided with temperature measurement probe, and temperature measurement probe is connected with probe rod as a whole, the center of mounting seat is provided with through-hole, probe rod is correspondingly provided with through-hole, and probe rod is slidably connected with mounting seat, the temperature sensor and mounting seat adopt sliding connection, the length of being inserted into fuel cell stack can be adjusted, ensure that probe does not affect flow resistance, fuel cell stack temperature can also be accurately measured, improve temperature sensor use effect.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, specifically a temperature sensor for an air-cooled fuel cell stack. Background Technology

[0002] Air-cooled fuel cell stacks are fuel cell systems that dissipate heat through natural air convection or forced ventilation. They are characterized by simple structure, low cost, and high portability, making them suitable for low-power applications. To improve battery safety, temperature sensors are used to monitor battery heat in real time, reducing the risk of spontaneous combustion. A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. Temperature sensors are the core component of temperature measuring instruments, and there are many types. Based on the measurement method, they can be divided into two main categories: contact and non-contact. Based on the sensor materials and electronic component characteristics, they can be divided into resistance temperature detectors (RTDs) and thermocouples.

[0003] Chinese utility model patent CN221238537U discloses a temperature sensor for batteries, including a probe. A silicone protective cover is mounted on the outside of the probe, and a silicone base plate is mounted on the bottom of the protective cover. A temperature measuring chip is installed inside the probe, and a copper plate is embedded in the center of the silicone base plate, contacting the probe. This utility model protects the probe by using a silicone protective cover, a silicone base plate, a copper plate, and strong double-sided adhesive. The silicone protective cover and strong double-sided adhesive wrap around the probe, preventing direct contact between acidic or alkaline substances and the probe, thus avoiding corrosion or oxidation during use. However, the use of strong double-sided adhesive for fixing the sensor means the length of the temperature sensor extending into the fuel cell stack cannot be adjusted. Excessive insertion affects flow resistance, while insufficient insertion prevents accurate measurement of the fuel cell stack, reducing temperature measurement accuracy and sensor performance, thus failing to meet usage requirements. Utility Model Content

[0004] The purpose of this invention is to provide a temperature sensor for an air-cooled fuel cell stack, in order to solve the problems mentioned in the background art, such as the inability to adjust the length of the temperature sensor inserted into the fuel cell stack, the impact of excessive insertion on flow resistance, and the inability to accurately measure the fuel cell stack due to insufficient insertion, which would reduce the accuracy of temperature measurement, reduce the effectiveness of the temperature sensor, and fail to meet the application requirements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a temperature sensor for an air-cooled fuel cell stack, comprising a sensor body and a mounting base, wherein a temperature measuring chip assembly is disposed inside the sensor body and the temperature measuring chip assembly is fixedly connected to the sensor body;

[0006] A cable is provided on one side of the sensor body and is electrically connected to the temperature measuring chip assembly. A probe is provided at the bottom of the sensor body and is integrated with the temperature measuring chip assembly. A temperature measuring probe is provided at the lower end of the probe and is integrated with the probe.

[0007] The mounting base has a through hole at its center, and the probe is correspondingly positioned to the through hole, with the probe and the mounting base being slidably connected through the hole.

[0008] Preferably, the mounting base includes a fixed plate, a threaded connection part, and a nut connection part. The threaded connection part is located at the lower end of the fixed plate, and the nut connection part is located at the upper end of the fixed plate. The fixed plate, the threaded connection part, and the nut connection part are integrated into one unit.

[0009] Preferably, a mounting hole is provided on both sides of the nut connecting part, a connecting bolt is provided on one side of the mounting hole, and the connecting bolt is provided corresponding to the mounting hole, and the connecting bolt is threadedly connected to the nut connecting part.

[0010] Preferably, a rubber washer is provided at the lower end of the fixed disk, and the rubber washer is in contact with the fixed disk. The rubber washer is located outside the connection between the threaded connection and the fixed disk.

[0011] Preferably, a sealing ring is provided inside the through hole, and the sealing ring is integrated with the threaded connection part, and the diameter of the sealing ring is the same as the outer diameter of the probe rod.

[0012] Preferably, a heat shrink sleeve is provided above the mounting base, and one end of the heat shrink sleeve is fixedly connected to the mounting base. The heat shrink sleeve is provided outside the probe rod.

[0013] Preferably, the cable is provided with a strap, and one end of the strap is fixedly connected to the cable.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model device, through the setting of a mounting base, sealing ring and connecting bolt, allows the probe to slide and connect with the mounting base. The length of the temperature probe inserted into the fuel cell stack can be adjusted according to the temperature measurement requirements, so that the temperature probe is in a suitable temperature measurement position. One end of the connecting bolt contacts the probe and clamps and fixes the installed probe. In this way, the temperature probe will not affect the flow resistance, and can accurately measure the temperature of the fuel cell stack, thus improving the performance of the temperature sensor.

[0016] 2. This utility model device uses a heat-shrink sleeve, which is heated and shrunk to cover the gap between the probe and the mounting base, thereby further improving the connection effect between the probe and the mounting base;

[0017] 3. The utility model device has a strap that can bind excess cables together, preventing them from crossing or tangling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a structural diagram of the mounting base of this utility model;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 For the present utility model Figure 3 A magnified view of a portion of area A.

[0022] In the diagram: 1. Sensor body; 2. Cable; 3. Strap; 4. Probe; 5. Temperature probe; 6. Mounting base; 7. Heat shrink sleeve; 8. Fixing plate; 9. Rubber gasket; 10. Threaded connection; 11. Through hole; 12. Sealing ring; 13. Nut connection; 14. Mounting hole; 15. Connecting bolt; 16. Temperature sensing chip assembly. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-4 This utility model provides an embodiment of a temperature sensor for an air-cooled fuel cell stack, comprising a sensor body 1 and a mounting base 6. A temperature sensing chip assembly 16 is disposed inside the sensor body 1 and is fixedly connected to the sensor body 1. A cable 2 is disposed on one side of the sensor body 1 and is electrically connected to the temperature sensing chip assembly 16. A probe 4 is disposed at the bottom of the sensor body 1 and is integrally connected to the temperature sensing chip assembly 16. A temperature probe 5 is disposed at the lower end of the probe 4 and is integrally connected to the probe 4. A mounting base 6 is positioned at its center. There is a through hole 11, and the probe 4 is correspondingly set with the through hole 11. The probe 4 is slidably connected to the mounting base 6. The mounting base 6 includes a fixed plate 8, a threaded connection part 10 and a nut connection part 13. The threaded connection part 10 is set at the lower end of the fixed plate 8, and the nut connection part 13 is set at the upper end of the fixed plate 8. The fixed plate 8, the threaded connection part 10 and the nut connection part 13 are integrated. There is a mounting hole 14 on both sides of the nut connection part 13. A connecting bolt 15 is set on one side of the mounting hole 14 and is correspondingly set with the mounting hole 14. The connecting bolt 15 is threadedly connected to the nut connection part 13.

[0025] In use: Screw in the threaded connection 10 of the mounting base 6 at the pre-reserved mounting hole 14 in the fuel cell stack structure and seal it. The threaded connection 10 is screwed into the hole and connected to the air-cooled fuel cell stack. Insert the probe 4 through the through hole 11 into the air-cooled fuel cell stack. Adjust the length of the inserted probe 4 according to the temperature measurement requirements. When the temperature probe 5 is inserted to a suitable length, use the connecting bolt 15 to clamp and fix the probe 4 in conjunction with the mounting hole 14. The temperature is measured by collecting temperature data inside the air-cooled fuel cell stack through the temperature probe 5.

[0026] Please see Figure 2 and Figure 3 A rubber gasket 9 is provided at the lower end of the fixed plate 8, and the rubber gasket 9 fits against the fixed plate 8. The rubber gasket 9 is located on the outside of the connection between the threaded connection part 10 and the fixed plate 8. A sealing ring 12 is provided inside the through hole 11, and the sealing ring 12 is connected to the threaded connection part 10 as a whole. The diameter of the sealing ring 12 is the same as the outer diameter of the probe rod 4. The rubber gasket 9 improves the sealing performance of the connection between the mounting base 6 and the air-cooled fuel cell stack, and the sealing ring 12 improves the sealing performance of the connection between the probe rod 4 and the mounting base 6.

[0027] Please see Figure 1 A heat shrink sleeve 7 is provided above the mounting base 6, and one end of the heat shrink sleeve 7 is fixedly connected to the mounting base 6. The heat shrink sleeve 7 is set outside the probe rod 4. After the probe rod 4 is fixedly installed, the heat shrink sleeve 7 is heated and shrunk to cover the gap between the probe rod 4 and the mounting base 6, thereby further improving the connection effect between the probe rod 4 and the mounting base 6.

[0028] Please see Figure 1 Cable 2 is provided with a strap 3, and one end of the strap 3 is fixedly connected to cable 2. The strap 3 can bind the excess cable 2 together to prevent the excess cable 2 from crossing and tangling.

[0029] Working principle: At the pre-reserved mounting hole 14 in the fuel cell stack structure, the threaded connection part 10 of the mounting base 6 is screwed in and sealed. The threaded connection part 10 is screwed into the hole and connected to the air-cooled fuel cell stack. The probe 4 is inserted into the air-cooled fuel cell stack through the through hole 11. The length of the inserted probe 4 is adjusted according to the temperature measurement requirements. When the temperature probe 5 is inserted to a suitable length, the connecting bolt 15 is used to clamp and fix the probe 4 in conjunction with the mounting hole 14. After the probe 4 is fixedly installed, the heat shrink sleeve 7 is heated and shrunk to cover the gap between the probe 4 and the mounting base 6. The sealing ring 12 is used to improve the sealing performance between the probe 4 and the mounting base 6. Temperature measurement is achieved by collecting temperature data inside the air-cooled fuel cell stack through the temperature probe 5.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature sensor for an air-cooled fuel cell stack, comprising a sensor body (1) and a mounting base (6), characterized in that: The sensor body (1) is provided with a temperature measuring chip assembly (16) inside, and the temperature measuring chip assembly (16) is fixedly connected to the sensor body (1); A cable (2) is provided on one side of the sensor body (1), and the cable (2) is electrically connected to the temperature measuring chip assembly (16). A probe (4) is provided at the bottom of the sensor body (1), and the probe (4) is connected to the temperature measuring chip assembly (16) as a whole. The lower end of the probe (4) is provided with a temperature probe (5), and the temperature probe (5) is connected to the probe (4) as a whole. The center of the mounting base (6) is provided with a through hole (11), the probe (4) is provided with the through hole (11) corresponding to it, and the probe (4) and the mounting base (6) are connected in a through-sliding manner.

2. The temperature sensor for an air-cooled fuel cell stack according to claim 1, characterized in that: The mounting base (6) includes a fixed plate (8), a threaded connection part (10) and a nut connection part (13). The threaded connection part (10) is located at the lower end of the fixed plate (8), and the nut connection part (13) is located at the upper end of the fixed plate (8). The fixed plate (8), the threaded connection part (10) and the nut connection part (13) are integrated.

3. The temperature sensor for an air-cooled fuel cell stack according to claim 2, characterized in that: A mounting hole (14) is provided on both sides of the nut connecting part (13). A connecting bolt (15) is provided on one side of the mounting hole (14), and the connecting bolt (15) is provided in correspondence with the mounting hole (14). The connecting bolt (15) is threadedly connected to the nut connecting part (13).

4. A temperature sensor for an air-cooled fuel cell stack according to claim 2, characterized in that: A rubber washer (9) is provided at the lower end of the fixed plate (8), and the rubber washer (9) is in contact with the fixed plate (8). The rubber washer (9) is located outside the connection between the threaded connection part (10) and the fixed plate (8).

5. A temperature sensor for an air-cooled fuel cell stack according to claim 1, characterized in that: The through hole (11) is provided with a sealing ring (12), and the sealing ring (12) is connected to the threaded connection (10) as a whole. The diameter of the sealing ring (12) is the same as the outer diameter of the probe (4).

6. A temperature sensor for an air-cooled fuel cell stack according to claim 1, characterized in that: A heat shrink sleeve (7) is provided above the mounting base (6), and one end of the heat shrink sleeve (7) is fixedly connected to the mounting base (6). The heat shrink sleeve (7) is provided outside the probe (4).

7. A temperature sensor for an air-cooled fuel cell stack according to claim 1, characterized in that: The cable (2) is provided with a strap (3), and one end of the strap (3) is fixedly connected to the cable (2).

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