Magnetic temperature sampling probe

Abstract

The utility model relates to the field of automobile power electronics technology discloses a magnetic temperature sampling probe, the copper bar is provided with the magnetic seat that is magnetically attracted to the nickel plating layer, the upper surface of magnetic seat is provided with the installation slot that temperature probe is placed along the direction of being adhered to the copper bar surface, is provided with the first positioning mechanism that temperature probe is pressed to the installation slot bottom for the installation slot, and the second positioning mechanism is used for preventing temperature probe and is along the direction of being adhered to the copper bar surface and moves, a magnetic temperature sampling probe of the utility model, the nickel plating layer that covers the copper bar surface can improve the corrosion resistance of copper bar, through the magnetic seat can realize the quick dismounting of temperature probe and copper bar and guarantee the installation stability. The installation slot can realize the installation of temperature probe on the magnetic seat, the first positioning mechanism can let temperature probe be closer to the bottom of magnetic seat to improve the precision of temperature monitoring. The second positioning mechanism can avoid temperature probe and along the length direction of itself and separate from the installation slot.

Description

Technical Field

[0001] This utility model relates to the field of automotive power electronics technology, and in particular to a magnetic temperature sampling probe. Background Technology

[0002] A battery pack circuit breaker unit (BDU) is specifically designed for the internal components of a battery pack and is also a type of power distribution box. It is an essential unit in new energy vehicles, and its internal components mainly include relays and fuses. A similar battery pack circuit breaker unit is disclosed in patent publication CN119361872A.

[0003] Traditional battery pack circuit breakers (BDUs) have specific temperature operating range requirements for their internal electronic components. If the temperature exceeds the safe operating range of the components, it can cause serious damage. Therefore, testing the temperature of key points inside the BDU before shipment is a crucial step. A common testing method involves attaching a temperature probe to the internal conductive copper busbar using tape. The temperature probe then uses thermal conduction to transfer the heat generated by the copper busbar during operation to a temperature sensor connected to it, thereby acquiring and monitoring the operating temperature of the copper busbar.

[0004] However, in actual use, fixing the temperature probe with tape is not only difficult to disassemble, but also the adhesion will decrease due to the increase in temperature during use, which poses a risk of falling off. In addition, the tape is easy to leave residue after being torn off, which affects the smoothness and performance of the copper busbar surface. Therefore, it still needs to be improved. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a magnetic temperature sampling probe that can magnetically attach the temperature probe to the surface of a copper busbar. Compared to adhesive tape fixing, this method is not only easier to install and remove and provides a more stable connection, but also avoids leaving adhesive residue after removal, thus saving the trouble of removing adhesive.

[0006] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method: A magnetic temperature sampling probe includes a nickel plating layer covering the surface of a copper busbar and a temperature probe. A magnetic base is provided on the copper busbar and magnetically attracted to the nickel plating layer. The upper surface of the magnetic base is provided with a mounting groove for placing the temperature probe along the direction of adhering to the surface of the copper busbar. The mounting groove is provided with a first positioning mechanism for pressing the temperature probe against the bottom of the mounting groove and a second positioning mechanism for preventing the temperature probe from moving along the direction of adhering to the surface of the copper busbar.

[0007] Using the above solution, the nickel plating layer covering the copper busbar enhances its corrosion resistance. The magnetic mounting base allows for quick and easy installation and removal of the temperature probe from the copper busbar while ensuring stable mounting. The mounting slot allows the temperature probe to be installed on the magnetic mounting base. The first positioning mechanism brings the temperature probe closer to the bottom of the magnetic mounting base, thereby improving the accuracy of temperature monitoring. The second positioning mechanism prevents the temperature probe from detaching from the mounting slot along its length, thus improving the installation stability of the temperature probe.

[0008] Preferably, the first positioning mechanism includes a pressing strip inserted into the mounting groove to press the temperature probe against the bottom of the mounting groove, and locking components disposed at both ends of the pressing strip to fix the pressing strip to the magnetic base.

[0009] Using the above solution, the extrusion strip can both tightly press the temperature probe into the mounting groove and ensure uniform force application, thereby improving the fit between the temperature probe and the bottom of the mounting groove, and thus making temperature monitoring more accurate. The locking component allows the extrusion strip to be stably connected to the magnetic base, further improving the connection stability of the temperature probe.

[0010] Preferably, the locking assembly includes locking blocks symmetrically arranged on both sides of the extrusion strip, locking grooves formed on the upper surface of the magnetic base for the two locking blocks to engage, and fasteners for fixing the locking blocks in the locking grooves.

[0011] Using the above solution, the snap-fit ​​between the locking block and the locking groove enables precise installation of the extrusion strip and improves the stress balance after installation. The fasteners lock the locking block and the locking groove in place, thereby enhancing the stability of the extrusion strip installation.

[0012] Preferably, the fastener is a screw, which passes through the locking block along the direction of the extrusion temperature probe and is threaded onto the bottom of the locking groove.

[0013] The above solution features a simple screw structure, convenient assembly and disassembly, and low cost. It can improve the locking efficiency between the locking block and the locking groove, and ensure the stability after the connection is completed.

[0014] Preferably, guide rods are provided on both sides of the extrusion strip, and guide grooves are provided on the inner side wall of the mounting groove for the two guide rods to slide and engage.

[0015] By adopting the above solution, the cooperation between the guide rod and the guide groove can facilitate the precise installation between the extrusion strip and the mounting groove, and play a guiding role in the installation process, so that the extrusion strip will not be misaligned.

[0016] Preferably, an extrusion protrusion is provided on the side of the extrusion strip closest to the temperature probe, and both sides of the extrusion protrusion are provided with beveled surfaces.

[0017] With the above-described design, the extrusion protrusion 1 extends beyond the extrusion surface of the extrusion strip, thereby increasing the extrusion performance of the extrusion strip. This allows the temperature probe to fit more closely to the bottom of the mounting groove and improves installation stability. The beveled surface acts as a guide, making it easier for the extrusion protrusion 1 to enter the mounting groove, thus improving the installation efficiency and convenience of the extrusion strip.

[0018] Preferably, the second positioning mechanism includes an extrusion ridge two disposed at the bottom of the mounting groove and anti-slip textures formed on the surface of the extrusion ridge two.

[0019] By adopting the above scheme, the extrusion ridge 2 can increase the extrusion force on the temperature probe, and the anti-slip texture can increase the friction between the extrusion ridge 2 and the temperature probe, thereby improving the locking ability of the temperature probe.

[0020] Preferably, the anti-slip texture has multiple lines arranged along the length of the temperature probe, with each anti-slip texture set along a length perpendicular to the temperature probe.

[0021] By adopting the above scheme, the anti-slip texture can generate frictional force along the length of the temperature probe, thereby improving its locking performance on the temperature probe.

[0022] Preferably, the bottom of the magnetic holder is provided with a magnetic element, which is flush with the bottom surface of the magnetic holder.

[0023] The above solution enables the magnetic holder to be stably attached to the surface of the copper busbar.

[0024] Preferably, the bottom of the magnetic holder is covered with insulating varnish.

[0025] By adopting the above solution, the magnetic base will not be electrically connected to the copper busbar, thus avoiding leakage of the copper busbar and improving safety.

[0026] This invention, by employing the above technical solutions, achieves significant technical advantages: the nickel plating layer covering the copper busbar enhances its corrosion resistance; the magnetic base enables quick assembly and disassembly of the temperature probe from the copper busbar while ensuring stable installation; the mounting slot allows the temperature probe to be installed on the magnetic base; the first positioning mechanism brings the temperature probe closer to the bottom of the magnetic base, thereby improving the accuracy of temperature monitoring; and the second positioning mechanism prevents the temperature probe from detaching from the mounting slot along its length, thus enhancing the installation stability of the temperature probe. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this embodiment. Figure 1 ; Figure 2 for Figure 1 An enlarged schematic diagram of part A shown; Figure 3 This is a schematic diagram of the structure of this embodiment. Figure 2 ; Figure 4 for Figure 3 An enlarged schematic diagram of part B is shown below; Figure 5 This is a schematic diagram of the structure of this embodiment. Figure 3 ; Figure 6 for Figure 5 An enlarged schematic diagram of section C shown.

[0028] The parts referred to by the numbers in the above attached figures are as follows: 1. Temperature probe; 2. Magnetic base; 3. Mounting groove; 4. Extrusion strip; 5. Locking block; 6. Locking groove; 7. Fastener; 8. Guide rod; 9. Guide groove; 10. Extrusion protrusion one; 11. Beveled surface; 12. Extrusion protrusion two; 13. Anti-slip texture; 14. Magnetic component. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 6 As shown, this embodiment discloses a magnetic temperature sampling probe, including a nickel-plated layer covering the surface of a copper busbar and a temperature probe 1. The temperature probe 1 is connected to a rear-mounted temperature sensor (not shown) to achieve temperature transfer. This is common knowledge in the art and does not involve any improvement to this solution, so it will not be described in detail. A magnetic holder 2 is provided on the copper busbar, which is magnetically attracted to the nickel-plated layer. The magnetic holder 2 is made of copper or aluminum alloy, thus having good thermal conductivity. The bottom and outer surface of the magnetic holder 2 are covered with insulating varnish to prevent current from the copper busbar from being conducted to the magnetic holder 2. The upper surface of the magnetic holder 2 has a mounting groove 3 for placing the temperature probe 1 along the direction of adhering to the surface of the copper busbar. The mounting groove 3 is elongated and extends through the magnetic holder 2 from front to back. The bottom of the mounting groove 3 is close to the bottom of the magnetic holder 2 to improve the thermal conductivity of the bottom of the magnetic holder 2, thereby increasing the monitoring speed and accuracy of the temperature probe 1.

[0031] To improve the connection stability of the temperature probe 1, the mounting groove 3 is provided with a first positioning mechanism for pressing the temperature probe 1 against the bottom of the mounting groove 3 and a second positioning mechanism for preventing the temperature probe 1 from moving along the direction of contact with the copper busbar surface. Specifically, the first positioning mechanism includes a pressing strip 4 inserted into the mounting groove 3 to press the temperature probe 1 against the bottom of the mounting groove 3, and locking components located at both ends of the pressing strip 4 to fix the pressing strip 4 to the magnetic base 2. The pressing strip 4 is square rod shaped, and the locking components include locking blocks 5 symmetrically fixed on both sides of the pressing strip 4, locking grooves 6 formed on the upper surface of the magnetic base 2 for the two locking blocks 5 to engage respectively, and fasteners 7 for fixing the locking blocks 5 in the locking grooves 6. There are two locking grooves 6, which extend symmetrically on both sides of the opening of the mounting groove 3 to accommodate the two locking blocks 5 respectively. The fasteners 7 are screws, which pass through the locking blocks 5 along the direction of pressing the temperature probe 1 and are threaded into the bottom of the locking grooves 6, thereby completing the locking between the locking blocks 5 and the locking grooves 6.

[0032] To improve the installation accuracy and efficiency of the extrusion strip 4, both sides of the extrusion strip 4 are integrally provided with guide rods 8 with a semi-circular cross section, and the inner side wall of the mounting groove 3 is provided with two semi-circular guide grooves 9 for the two guide rods 8 to slide and engage.

[0033] In order to improve the extrusion performance of the extrusion strip 4, an extrusion protrusion 10 is integrally provided on the side of the extrusion strip 4 near the temperature probe 1. The extrusion protrusion 10 is set along the extrusion strip 4 and is the same length as the extrusion strip 4. Both sides of the extrusion protrusion 10 are provided with beveled surfaces 11, thereby improving the installation efficiency and convenience of the extrusion strip 4.

[0034] To achieve the limiting function of the second positioning mechanism, the second positioning mechanism includes an extrusion protrusion 12 disposed at the bottom of the mounting groove 3 and anti-slip textures 13 formed on the surface of the extrusion protrusion 12. Multiple anti-slip textures 13 are provided and arranged along the length direction of the temperature probe 1, and each anti-slip texture 13 is arranged along the length direction perpendicular to the temperature probe 1.

[0035] To achieve the magnetic attraction between the magnetic base 2 and the copper busbar, multiple magnetic components 14 are fixedly embedded in the bottom of the magnetic base 2. These magnetic components 14 are arranged in two rows on both sides of the mounting groove 3, with each side's magnetic components 14 aligned along the length of the mounting groove 3. The magnetic components 14 are flush with the bottom surface of the magnetic base 2, allowing the magnetic base 2 to adhere tightly to the surface of the copper busbar, thereby improving the monitoring accuracy of the temperature probe 1. The magnetic components 14 are preferably high-temperature resistant magnets to ensure their magnetic force at high temperatures and prevent the magnetic base 2 from detaching due to heat generated by the copper busbar during operation.

[0036] The specific usage process is as follows: When installing the temperature probe 1 on the magnetic base 2, first unscrew all the fasteners 7 to release the lock between the locking block 5 and the locking groove 6. Then, remove the extrusion strip 4 from the mounting groove 3 to expose the opening of the mounting groove 3. Next, insert the temperature probe 1 horizontally into the mounting groove 3 until the temperature probe 1 lies horizontally on the surface of the extrusion protrusion 12. At this time, use the beveled surfaces 11 on both sides of the extrusion protrusion 10 to reinsert the extrusion strip 4 into the mounting groove 3, and simultaneously engage the locking blocks 5 at both ends of the extrusion strip 4 into the corresponding locking grooves 6. During this process, the guide rod 8 and the guide groove 9 can be slidably engaged for guidance and pre-positioning, thereby improving the installation accuracy and efficiency of the extrusion strip 4. After the extrusion strip 4 is installed, re-pass the fasteners 7 through the locking block 5 and tighten them at the bottom of the locking groove 6 to drive the locking block downward and lock the locking block 5. Once all locking blocks 5 are locked, the first extrusion ridge 10 on the extrusion strip 4 can completely press the temperature probe 1 in the mounting groove 3. With the cooperation of the second extrusion ridge 12 and the anti-slip texture 13, the temperature probe 1 can be effectively prevented from being pulled out of the mounting groove 3, thereby completing the installation of the temperature probe 1 on the magnetic base 2.

[0037] In use, first disassemble the housing of the BDU module to be tested to expose the internal components. Then, directly attach the bottom of the magnetic base 2 to the copper busbar whose temperature needs to be tested using the magnetic component 14. When the BDU is running, the copper busbar heats up after being powered on. The heat is conducted to the temperature probe 1 through the magnetic base 2, and then conducted to the connected temperature sensor by the temperature probe 1, thereby obtaining the temperature of the copper busbar.

[0038] After the test is completed, stop the BDU to de-energize the copper busbar, and then remove the magnetic holder 2 from the copper busbar by overcoming the magnetic force of the magnetic component 14. The operating principle and process of the BDU are common knowledge in the field and do not involve any improvement to this solution, therefore they will not be described in detail.

Claims

1. A magnetic temperature sampling probe, comprising a nickel-plated layer covering the surface of a copper busbar and a temperature probe (1), characterized in that: A magnetic base (2) is provided on the copper busbar and magnetically attracted to the nickel plating layer. The upper surface of the magnetic base (2) is provided with a mounting groove (3) for placing the temperature probe (1) along the direction of adhering to the surface of the copper busbar. The mounting groove (3) is provided with a first positioning mechanism for pressing the temperature probe (1) against the bottom of the mounting groove (3) and a second positioning mechanism for preventing the temperature probe (1) from moving along the direction of adhering to the surface of the copper busbar.

2. The magnetic temperature sampling probe according to claim 1, characterized in that: The first positioning mechanism includes a pressing strip (4) inserted into the mounting groove (3) to press the temperature probe (1) against the bottom of the mounting groove (3) and a locking assembly disposed at both ends of the pressing strip (4) to fix the pressing strip (4) to the magnetic base (2).

3. The magnetic temperature sampling probe of claim 2, wherein: The locking assembly includes locking blocks (5) symmetrically arranged on both sides of the extrusion bar (4), locking grooves (6) formed on the upper surface of the magnetic base (2) for the two locking blocks (5) to engage respectively, and fasteners (7) for fixing the locking blocks (5) in the locking grooves (6).

4. The magnetic temperature sampling probe of claim 3, wherein: The fastener (7) is a screw that passes through the locking block (5) along the direction of the extrusion temperature probe (1) and is threaded onto the bottom of the locking groove (6).

5. A magnetic temperature sampling probe according to claim 2, characterized in that: Guide rods (8) are provided on both sides of the extrusion strip (4), and guide grooves (9) are provided on the inner side wall of the mounting groove (3) for the two guide rods (8) to slide and engage.

6. The magnetic temperature sampling probe of claim 2, wherein: The extrusion strip (4) has an extrusion protrusion (10) on the side near the temperature probe (1), and both sides of the extrusion protrusion (10) have beveled surfaces (11).

7. The magnetic temperature sampling probe according to any one of claims 1 to 6, characterized in that: The second positioning mechanism includes an extrusion protrusion 2 (12) located at the bottom of the mounting groove (3) and anti-slip texture (13) formed on the surface of the extrusion protrusion 2 (12).

8. A magnetic temperature sampling probe according to claim 7, characterized in that: The anti-slip texture (13) has multiple lines arranged along the length of the temperature probe (1), and each anti-slip texture (13) is set along the length of the temperature probe (1) perpendicular to the length of the temperature probe (1).

9. A magnetic temperature sampling probe according to any one of claims 1 to 6, characterized in that: A magnetic element (14) is provided at the bottom of the magnetic base (2), and the magnetic element (14) is flush with the bottom surface of the magnetic base (2).

10. A magnetic temperature sampling probe according to any one of claims 1 to 6, characterized in that: The bottom of the magnetic base (2) is covered with insulating varnish.

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