Positioning temperature detection tool for metal spraying temperature detection of end face of high-energy-storage capacitor

Abstract

The utility model discloses a positioning temperature detection tool for metal spraying temperature detection of an end face of a high energy storage capacitor, which comprises a capacitor core group, a core group fixing frame, a heat sensor, a signal processor, a base, a connecting rod, a processor mounting box, a core group covering box and a sensor mounting plate, the capacitor core group is installed on the core group fixing frame and is arranged in the core group covering box, two opposite vertical side walls of the core group covering box are respectively provided with a covering box window, the two sensor mounting plates are respectively arranged in the two covering box windows, each sensor mounting plate is provided with a plurality of heat sensors, the core group covering box is arranged on the base, and the heat sensors are arranged on the base. A processor mounting box positioned above the core group covering box is connected with the base through a connecting rod; and a signal processor is arranged in the processor mounting box. The device has the function of independently positioning and installing the capacitor core group and the plurality of heat sensors, can detect the real-time temperature of a plurality of positions of the metal spraying end surface of the capacitor core group, and provides a more reliable basis for perfecting the metal spraying process.

Description

Technical Field

[0001] This utility model relates to an auxiliary tooling for the production of high-energy-storage capacitors, and more particularly to a positioning temperature detection tooling for detecting the gold plating temperature of the end face of high-energy-storage capacitors. Background Technology

[0002] High-energy-density pulse capacitors are a crucial component of pulse power systems, characterized by high energy density, high reliability, long lifespan, and low loss. Their primary function is to store and release energy for the pulse power system, and their performance directly determines the safe and stable operation of the system. Large-capacity high-energy-density capacitors typically consist of dozens or even hundreds of capacitor cores connected in series and parallel via welding to form a capacitor core assembly. To connect the two ends of the capacitor core assembly to the electrodes, a gold layer is sprayed onto the end faces of the core assembly to improve its current withstand capability and facilitate reliable welding to the electrodes. Therefore, the quality of the gold spraying process at the ends of the capacitor core assembly determines the performance of the core assembly and even the entire capacitor.

[0003] In the gold spraying process at both ends of the capacitor core assembly, vaporized gold needs to be blown onto the end faces of both ends of the capacitor core assembly. If the temperature is too high, it may cause local failure of the core, thereby affecting the performance of the entire capacitor core assembly and the capacitor. Therefore, it is necessary to detect the temperature of the end faces of the capacitor core assembly after gold spraying in the gold spraying process. This is the key to verifying whether the temperature control of the gold spraying process is standard.

[0004] There are two traditional methods for detecting the temperature of the capacitor core assembly end face after gold spraying: the first is to set a thermal sensor at the center of the end face of the capacitor core assembly to collect the real-time gold spraying temperature and install a signal processor on the gold spraying fixture; the second is to measure the temperature of the end face of the capacitor core assembly being gold sprayed through an infrared thermometer at the observation window of the gold spraying machine.

[0005] The two traditional methods of temperature detection mentioned above have the following drawbacks:

[0006] The first method, because the thermal sensor is installed at the center of the end face of the capacitor core assembly, does not take into account the temperature difference during the top-to-bottom gold spraying process. This makes it impossible to accurately obtain the actual temperature of each position on the end face of the capacitor core assembly during gold spraying, making it difficult to use this as a basis for precise control of the temperature parameters of the gold spraying process. Moreover, installing the signal processor on the gold spraying fixture presents many problems. When the gold spraying fixture or process conditions change, it is difficult to reliably install the signal processor, ultimately reducing the accuracy of temperature detection. The second method is limited by environmental conditions and the limitations of infrared testing methods. There is a deviation between the measured temperature and the actual temperature, and human factors have a significant impact on the temperature measurement results. Utility Model Content

[0007] The purpose of this invention is to provide a positioning temperature detection fixture for gold plating temperature detection of the end face of a high-energy storage capacitor, which provides more comprehensive and accurate temperature detection and is easy to install with a signal processor, in order to solve the above problems.

[0008] This utility model achieves the above objectives through the following technical solutions:

[0009] A positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy-storage capacitor includes a capacitor core assembly, a core assembly mounting frame, a thermal sensor, and a signal processor. The capacitor core assembly, formed by multiple capacitor cores vertically overlapping, is mounted on the core assembly mounting frame. The signal output terminal of the thermal sensor is connected to the signal input terminal of the signal processor. The positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy-storage capacitor also includes a base, a connecting rod, a processor mounting box, a core assembly shielding box, and a sensor mounting plate. The core assembly mounting frame and the capacitor core assembly are both placed on the mounting frame. Inside the core assembly masking box, two vertical sidewalls of the core assembly masking box are respectively provided with masking box windows that communicate with each other inside and outside at positions corresponding to the two end faces of the capacitor core assembly. Two vertical sensor mounting plates are respectively placed in the two masking box windows and connected to the core assembly masking box. Multiple thermal sensors are mounted on each sensor mounting plate. The core assembly masking box is placed on top of the base. The processor mounting box located above the core assembly masking box is connected to the base through the vertical connecting rod. The signal processor is placed inside the processor mounting box.

[0010] Preferably, to more comprehensively and accurately detect the gold plating temperature of the capacitor core assembly end face, each sensor mounting plate has six thermal sensors, of which four thermal sensors form a first group and the other two form a second group. The four thermal sensors in the first group are located at the vertical center of the corresponding end face of the capacitor core assembly and are arranged at equal horizontal intervals. The two thermal sensors in the second group are located at the horizontal center of the corresponding end face of the capacitor core assembly and are respectively located above and below the four thermal sensors in the first group and are vertically equidistant. The signal output terminals of all the thermal sensors are connected to the signal input terminals of the signal processor through wires. Multiple wires corresponding to the same end face of the capacitor core assembly are placed in the same cable.

[0011] Preferably, in order to facilitate assembly and improve the stability of the entire tooling, the four connecting rods are divided into two groups and located on opposite sides of the core assembly shielding box. The connecting rods are flat rods and are welded to the processor mounting box and the base respectively.

[0012] Preferably, for stable and reliable installation of the capacitor core assembly, the core assembly fixing frame includes a base plate, a first pressure plate, a second pressure plate, columns, nuts, and compression springs. The capacitor core assembly is placed on top of the horizontal base plate, and the horizontal first pressure plate is placed on top of the capacitor core assembly. The two columns are located on opposite sides of the capacitor core assembly, and the lower ends of the two columns are connected to the sides of the base plate. The outer circumference of the columns near the upper end is provided with external threads. The upper ends of the two columns pass through the through holes near the sides of the first pressure plate and the second pressure plate, respectively, and are connected to the two nuts. The two compression springs are respectively fitted around the two columns and located between the first pressure plate and the second pressure plate.

[0013] Preferably, to facilitate handling of this fixture, the processor mounting box is provided with two inverted "U" shaped handles on its top.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention uses a core assembly fixing bracket to fix the capacitor core assembly before placing it together in a core assembly shielding box. A shielding box window for gold plating is provided on the core assembly shielding box, and a sensor mounting plate is installed in the shielding box window. Multiple thermal sensors are installed on the sensor mounting plate. The core assembly shielding box is mounted on a base and assembled together with a processor mounting box via connecting rods. The signal processor is placed inside the processor mounting box. Ultimately, the entire fixture has the function of independently positioning and installing the capacitor core assembly and multiple thermal sensors. In use, the gold plating operation is performed by first aligning the shielding box window according to the set parameters, and the process is completed both during and after gold plating. This invention monitors the real-time temperature at multiple locations on the gold-plated end face of capacitor cores, providing a more comprehensive understanding of the real-time temperature at different times and locations during the gold plating process of high-energy-storage capacitors. This verifies the correctness of the gold plating process conditions, provides a more reliable basis for improving the gold plating process, thereby increasing the pass rate in batch gold plating of cores. It also facilitates more optimized process or equipment adjustments when the gold plating process changes or equipment is upgraded. Furthermore, this invention does not require the signal processor to be placed in the gold plating equipment or other gold plating fixtures, and its use is unaffected by changes to the gold plating equipment or other gold plating fixtures. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy storage capacitor as described in this utility model after assembly.

[0017] Figure 2 This is a three-dimensional structural diagram of the positioning temperature detection fixture for detecting the gold plating temperature of the high-energy storage capacitor end face after the assembly of the fixture is completed and the side wall of the processor mounting box is removed.

[0018] Figure 3 This is a three-dimensional structural diagram of the positioning temperature detection fixture for detecting the gold plating temperature of the high-energy storage capacitor end face described in this utility model, after removing the base, connecting rod and processor mounting box.

[0019] Figure 4 This is a three-dimensional structural diagram of the capacitor core assembly, core assembly fixing frame, and core assembly shielding box assembled into the positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy storage capacitor as described in this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the capacitor core assembly and core assembly fixing frame assembled into a positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy storage capacitor, as described in this utility model. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figure 1-Figure 5 As shown, the positioning temperature detection fixture for detecting the gold plating temperature of the high-energy storage capacitor end face according to this utility model includes a capacitor core assembly 5, a core assembly fixing frame, a thermal sensor 7, a signal processor 10, a base 4, a connecting rod 9, a processor mounting box 1, a core assembly shielding box 2, and a sensor mounting plate 6. The capacitor core assembly 5, formed by vertically overlapping multiple capacitor cores (not marked in the figure), is mounted on the core assembly fixing frame. The signal output terminal of the thermal sensor 7 is connected to the signal input terminal of the signal processor 10. Both the core assembly fixing frame and the capacitor core assembly 5 are placed under the core assembly shielding box. Inside box 2, the two opposite vertical sidewalls of the core assembly masking box 2 are respectively provided with masking box windows (not marked in the figure) at positions corresponding to the two end faces of the capacitor core assembly 5, which are open to both inside and outside. Two vertical sensor mounting plates 6 are respectively placed in the two masking box windows and connected to the core assembly masking box 2. Multiple thermal sensors 7 are mounted on each sensor mounting plate 6. The core assembly masking box 2 is placed on top of the base 4. The processor mounting box 1 located above the core assembly masking box 2 is connected to the base 4 through a vertical connecting rod 9. The signal processor 10 is placed inside the processor mounting box 1. The aforementioned core assembly masking box 2 can be a cardboard box, the sensor mounting plates 6 can be cardboard, and the thermal sensors 7 can be mounted on the sensor mounting plates 6 with high-temperature tape. The sensor mounting plates 6 can be connected to the core assembly masking box 2 with high-temperature tape. This is a relatively simple and low-cost structure. In practical applications, other materials and installation and connection methods can also be used.

[0023] like Figure 1-Figure 5 As shown, this utility model also discloses the following more optimized specific structures:

[0024] To more comprehensively and accurately detect the gold plating temperature of the capacitor core assembly 5 end face, each sensor mounting plate 6 has six thermal sensors 7, of which four thermal sensors 7 form the first group and the other two form the second group. The four thermal sensors 7 in the first group are located at the vertical center of the corresponding end face of the capacitor core assembly 5 and are arranged at equal horizontal intervals. The two thermal sensors 7 in the second group are located at the horizontal center of the corresponding end face of the capacitor core assembly 5 and are located above and below the four thermal sensors 7 in the first group, respectively, and are vertically equidistant. The signal output terminals of all thermal sensors 7 are connected to the signal input terminals of the signal processor 10 through wires. The multiple wires corresponding to the same end face of the capacitor core assembly 5 are all placed in the same cable 3. The cable 3 can be fixed to the outer wall of the core assembly shielding box 2 with high-temperature tape.

[0025] To facilitate assembly and improve the stability of the entire fixture, the four connecting rods 9 are divided into two groups and located on opposite sides of the core assembly shielding box 2. The connecting rods 9 are flat rods and are welded to the processor mounting box 1 and the base 4 respectively.

[0026] To ensure stable and reliable installation of the capacitor core assembly 5, the core assembly fixing frame includes a base plate 16, a first pressure plate 15, a second pressure plate 11, columns 17, nuts 13, and compression springs 14. The capacitor core assembly 5 is placed on top of the horizontal base plate 15, and the horizontal first pressure plate 15 is placed on top of the capacitor core assembly 5. The two columns 17 are located on opposite sides of the capacitor core assembly 5, and the lower ends of the two columns 17 are connected to the two sides of the base plate 16. The outer circumferential wall of the column 17 near the upper end is provided with external threads 12. The upper ends of the two columns 17 pass through the through holes near the sides of the first pressure plate 11 and the second pressure plate 15, respectively, and are connected to the two nuts 13 through the external threads 12. The two compression springs 14 are respectively fitted around the two columns 17 and located between the first pressure plate 11 and the second pressure plate 15.

[0027] To facilitate handling of this fixture, the processor mounting box 1 is equipped with two inverted "U" shaped handles 8 on its top.

[0028] In application, first install all six thermal sensors 7 on the end faces of the capacitor core group 5 at both ends of the fixture, and then place the entire fixture into the gold spraying process production line. During the gold spraying process and after the gold spraying of the end faces of the capacitor core group 5 is completed, the signal processor 10 obtains the temperature information of all thermal sensors 7, that is, realizes the real-time temperature detection of the end faces of the capacitor core group 5 at different times and multiple positions in the gold spraying process, and determines whether the highest temperature exceeds the end face temperature required by the gold spraying process, thereby verifying the correctness of the gold spraying process conditions and providing a more reliable basis for improving the gold spraying process.

[0029] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy-storage capacitor, comprising a capacitor core assembly, a core assembly mounting frame, a thermal sensor, and a signal processor, wherein the capacitor core assembly, formed by multiple capacitor cores vertically overlapping, is mounted on the core assembly mounting frame, and the signal output terminal of the thermal sensor is connected to the signal input terminal of the signal processor, characterized in that: The positioning temperature detection fixture for detecting the gold plating temperature of the high-energy storage capacitor end face also includes a base, a connecting rod, a processor mounting box, a core assembly shielding box, and a sensor mounting plate. The core assembly fixing frame and the capacitor core assembly are both placed inside the core assembly shielding box. The two opposite vertical side walls of the core assembly shielding box are respectively provided with shielding box windows that communicate with each other inside and outside at positions corresponding to the two end faces of the capacitor core assembly. The two vertical sensor mounting plates are respectively placed in the two shielding box windows and connected to the core assembly shielding box. Each sensor mounting plate is equipped with multiple thermal sensors. The core assembly shielding box is placed on top of the base. The processor mounting box located above the core assembly shielding box is connected to the base through the vertical connecting rod. The signal processor is placed inside the processor mounting box.

2. The positioning temperature detection fixture for detecting the gold plating temperature of the high-energy storage capacitor end face as described in claim 1, characterized in that: Each of the sensor mounting plates has six thermal sensors, four of which form a first group and the other two form a second group. The four thermal sensors in the first group are located at the vertical center of the corresponding end face of the capacitor core and are arranged at equal horizontal intervals. The two thermal sensors in the second group are located at the horizontal center of the corresponding end face of the capacitor core and are located above and below the four thermal sensors in the first group, respectively, and are vertically equidistant. The signal output terminals of all the thermal sensors are connected to the signal input terminals of the signal processor through wires. Multiple wires corresponding to the same end face of the capacitor core are placed in the same cable.

3. The positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy storage capacitor according to claim 1 or 2, characterized in that: The four connecting rods are divided into two groups and are located on opposite sides of the core assembly shielding box. The connecting rods are flat rods and are welded to the processor mounting box and the base respectively.

4. The positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy storage capacitor according to claim 1 or 2, characterized in that: The core assembly fixing frame includes a base plate, a first pressure plate, a second pressure plate, columns, nuts, and compression springs. The capacitor core assembly is placed on top of the horizontal base plate, and the horizontal first pressure plate is placed on top of the capacitor core assembly. The two columns are located on opposite sides of the capacitor core assembly, and the lower ends of the two columns are connected to the sides of the base plate. The outer circumference of the columns near the upper end is provided with external threads. The upper ends of the two columns pass through the through holes near the sides of the first pressure plate and the second pressure plate, respectively, and are connected to the two nuts. The two compression springs are respectively fitted around the two columns and located between the first pressure plate and the second pressure plate.

5. The positioning temperature detection fixture for detecting the gold plating temperature of the end face of a high-energy storage capacitor according to claim 1 or 2, characterized in that: The processor mounting box has two inverted "U" shaped handles on top.

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