I. Design considerations behind the specification parameters

(I) Limited range of diameter and height

The size setting of diameter between Φ20 - Φ136 and height less than 450mm is the result of comprehensive consideration of many factors. From the application scenario, Oval Capacitor Case with a smaller diameter such as Φ20 is often used in micro-electronic devices with extremely demanding space requirements, such as wearable devices such as smart watches and Bluetooth headsets. These devices have limited internal space and need to miniaturize and integrate various electronic components as much as possible. Small-sized capacitor housings can accurately fit the narrow installation space to ensure the overall lightness and portability of the device. ​
As the diameter increases to Φ136 and the height approaches 450mm, this type of oval capacitor housing is suitable for devices with higher power and higher energy storage requirements, such as battery management systems for new energy vehicles and large uninterruptible power supplies. Larger size means larger internal space, which can accommodate more capacitor dielectrics and electrode materials, thereby improving the energy storage capacity and working performance of the capacitor.​
(II) Importance of dimensional accuracy​
Precise diameter and height dimensions are essential for oval capacitor housings. During the manufacturing process, strict dimensional accuracy control can ensure the perfect fit between the housing and the internal capacitor elements. If the housing dimensions deviate, the capacitor elements may be installed unstably, and displacement may occur during the operation of the equipment due to factors such as vibration, affecting the electrical performance of the capacitor, and even causing faults such as short circuits. At the same time, standardized dimensions also facilitate assembly operations on automated production lines, improving production efficiency and product quality stability. ​
II. Unique advantages of AL1060 material​
(I) Basic properties of the material​
AL1060 belongs to the pure aluminum series, with an aluminum content of up to 99.6%. This high purity gives AL1060 good electrical and thermal conductivity. During the operation of the capacitor, a certain amount of heat will be generated. Good thermal conductivity can quickly dissipate the heat to avoid excessive internal temperature of the capacitor due to heat accumulation, thereby affecting the performance and service life of the capacitor. Its electrical conductivity also helps the transmission and distribution of charge, ensuring the stable operation of the capacitor.​
(II) Processing performance and molding advantages AL1060 has excellent processing performance and is easy to perform stamping, stretching, bending and other molding processes. When making an elliptical capacitor shell, the aluminum plate can be quickly formed into the required elliptical structure through stamping and stretching processes, and the shape accuracy and surface quality of the shell can be guaranteed. This good processing performance not only improves production efficiency, but also reduces production costs. At the same time, the shell of AL1060 material has good mechanical strength after molding, can withstand certain external force impact and vibration, and provide reliable physical protection for the internal capacitor components. ​
(III) Corrosion resistance and environmental adaptability In different working environments, the capacitor shell needs to have good corrosion resistance. A dense aluminum oxide film can naturally form on the surface of AL1060 pure aluminum, which can effectively block the invasion of external corrosive substances and protect the internal metal material from corrosion. Whether in a humid environment or in an industrial environment containing chemical gases, the elliptical capacitor shell made of AL1060 material can maintain stable performance, extend the service life of the capacitor, and improve the reliability of equipment operation.​
III. Application value of diversified customization types​
(I) Customization with core​
The customizable elliptical capacitor shell with core provides a flexible solution to meet different capacitor performance requirements. According to the specific application scenario and circuit design requirements, capacitor cores of different types and capacities can be installed inside the shell. For example, in high-frequency circuits, capacitor cores with good high-frequency characteristics are required; in filter circuits, capacitor cores with suitable capacitance and withstand voltage values ​​need to be selected. Through customization with core, the capacitor shell and capacitor core can be perfectly matched, giving full play to the performance advantages of the capacitor and meeting the working requirements of various complex circuits. ​
(II) Customization with screws​
The elliptical capacitor shell with screws has significant advantages in installation and fixation. During the assembly process of electronic equipment, the screw fixing method can provide reliable connection strength to ensure that the capacitor will not loosen or fall off during the operation of the equipment. This type of customization is particularly suitable for equipment that needs to be frequently moved or vibrates greatly, such as vehicle-mounted electronic equipment, industrial machinery and equipment, etc. Firmly mounting the capacitor shell at the specified position of the equipment with screws can effectively reduce problems such as poor contact caused by vibration and ensure the stable operation of the capacitor.​
(III) Customized with bottom hole​
The elliptical capacitor housing with bottom hole provides convenient conditions for electrical connection and heat dissipation. The bottom hole can be used to lead out the electrode pins of the capacitor, which is convenient for electrical connection with the external circuit and simplifies the wiring design of the circuit. At the same time, the bottom hole can also increase the heat dissipation area of ​​the housing, promote air circulation, and further improve the heat dissipation effect of the capacitor. In some high-power devices with high heat dissipation requirements, the customized design with bottom hole can effectively reduce the operating temperature of the capacitor and ensure its normal operation in high temperature environment. ​
IV. Application scenarios of elliptical capacitor housing​
(I) Consumer electronics field​
In the field of consumer electronics, such as smart phones, tablets and other devices, elliptical capacitor housings are widely used in power management circuits, signal filtering circuits and other parts due to their small size and good performance. Small-diameter elliptical capacitors can meet the design requirements of thin and light equipment, while providing stable energy storage and filtering functions for the circuit to ensure the normal operation of the equipment and signal quality. ​
(II) Industrial automation field​
In industrial automation equipment, such as programmable logic controllers (PLCs) and inverters, the reliability and stability of capacitors are extremely high. Oval capacitor housings with larger diameters and heights, combined with customized core, screw or bottom hole designs, can provide solid protection and convenient installation for industrial-grade capacitors. These capacitors undertake important tasks such as stabilizing voltage, filtering and noise reduction in industrial equipment, ensuring efficient and stable operation of industrial production. ​
(III) New energy field​
In new energy fields such as new energy vehicles and solar power generation, capacitors are key components for energy storage and conversion, and their performance directly affects the efficiency and reliability of the entire system. The large-capacity design and good heat dissipation performance of the oval capacitor housing can meet the needs of new energy equipment for high energy storage and high power. At the same time, its corrosion resistance and mechanical strength can also adapt to the complex working environment of new energy equipment, ensuring the stability of the capacitor during long-term operation. ​
V. Manufacturing process and quality control​
(I) Manufacturing process​
The manufacturing process of the oval capacitor housing mainly includes sheet cutting, stamping, surface treatment and other links. First, the AL1060 aluminum plate is accurately cut according to the required size specifications. Then, the aluminum plate is stretched and formed into the shape of an elliptical shell by a stamping die. In this process, the precision of the die and the stamping parameters need to be strictly controlled to ensure that the size and shape of the shell meet the requirements. The formed shell also needs to be surface treated, such as anodizing, painting, etc., to improve the corrosion resistance and aesthetics of the shell. ​
(II) Quality Control​
Quality control runs through the entire process of the production of the elliptical capacitor shell. In the raw material procurement link, the material of the AL1060 aluminum plate needs to be strictly tested to ensure that its composition and performance meet the standard requirements. In the production process, key indicators such as dimensional accuracy and surface quality are monitored in real time through online detection equipment to promptly detect and correct deviations in production. In the finished product inspection stage, the capacitor shell needs to be fully tested for performance, including electrical insulation performance test, mechanical strength test, corrosion resistance test, etc. Only products that pass all tests can enter the market to ensure the reliability of product quality.