Piezoresistor copper electrode chip
By using the design of copper electrode sheets and welding grooves, the problems of high manufacturing cost and instability of traditional varistors are solved, and a varistor with lower cost, higher stability and longer life are achieved.
Patent Information
- Application Number
- CN202421514160.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Traditional varistors use silver electrodes, which lead to high manufacturing costs and unstable welding, affecting performance and reliability.
A copper electrode sheet is used and a welding groove is opened on its top surface. The electrode sheet and the butt ring are connected through welding to enhance the contact area and connection stability.
Reduces the manufacturing cost of varistors, improves their stability and life, enhances the reliability and durability of welding, and ensures stable operation in complex environments.
Smart Images
Figure CN222813376U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic components and materials, in particular to a varistor copper electrode chip. Background Art
[0002] In the field of electronic technology, varistors, as an important electronic component, are widely used in various circuit protection, voltage stabilization, surge suppression, etc. However, most traditional varistors use silver electrodes, which not only makes the manufacturing cost high, but also easily causes instability during the welding process, affecting the performance and reliability of the varistors.
[0003] First of all, as a precious metal, the price of silver has remained high, resulting in high manufacturing costs for varistors using silver electrodes. In today's increasingly competitive market, reducing costs has become the key to improving companies' competitiveness.
[0004] Secondly, traditional silver electrodes are prone to instability during the welding process because the columnar copper wire needs to be welded to the silver sheet, which increases the difficulty of operation during the welding process and easily directly changes the shape of the electrode, affecting the use of the resistor.
[0005] In view of this, a varistor copper electrode chip is provided to overcome the above-mentioned defects. Utility Model Content
[0006] The utility model aims to provide a varistor copper electrode chip to solve the problems raised in the above background technology.
[0007] In order to solve the above technical problems, the utility model provides an insulating coating, a circular plate ceramic piece is arranged inside the insulating coating, and docking rings are integrally formed at the upper and lower ends of the circular plate ceramic piece. An electrode sheet is arranged inside the docking ring. The specific material of the electrode sheet is copper, and a welding groove is opened on the top surface of the electrode sheet.
[0008] Furthermore, the bottom surface of the electrode sheet is in direct contact with the top surface of the circular plate ceramic sheet, and the specific connection method between the electrode sheet and the docking ring is welding.
[0009] Furthermore, there are two electrode sheets, which are respectively located inside the two docking rings.
[0010] Furthermore, the specific material of the insulating coating is epoxy rubber.
[0011] Furthermore, the specific shape of the docking ring is a ring, the specific shape of the electrode sheet is a circle, and the electrode sheet is matched with the docking ring.
[0012] Furthermore, a copper wire is welded inside the welding groove, the specific material of the copper wire is copper, and the outer wall of the copper wire is coated with tin.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] By setting the material of the electrode sheet to copper, the cost of the varistor is reduced, while its use stability and service life are increased, thereby improving the practicality of the resistor.
[0015] By providing a welding groove on the top surface of the electrode sheet, the contact area between the copper wire and the electrode sheet is increased, welding is more convenient and the welding relationship is also stronger. At the same time, the reliability and durability of the connection are enhanced, and the influence of the external environment is effectively resisted, thereby ensuring that the varistor can still work stably in a complex environment and improving the safety and efficiency of the overall circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the internal structure of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the battery cell of the utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the circular plate ceramic piece of the utility model;
[0019] Figure 4 It is a schematic structural diagram of the overall view of the utility model.
[0020] In the figure: 1. Insulation coating; 2. Copper wire; 3. Circular ceramic plate; 4. Electrode plate; 5. Welding groove; 6. Docking ring. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Embodiment 1
[0023] See also Figure 1-4A varistor copper electrode chip comprises an insulating coating 1, a circular plate ceramic piece 3 is arranged inside the insulating coating 1, and a docking ring 6 is integrally formed at the upper and lower ends of the circular plate ceramic piece 3, and an electrode piece 4 is arranged inside the docking ring 6. The specific material of the electrode piece 4 is copper, and a welding groove 5 is opened on the top surface of the electrode piece 4.
[0024] Further, referring to the copper wire 2, the bottom surface of the electrode sheet 4 is in direct contact with the top surface of the circular plate ceramic sheet 3, and the specific connection method of the electrode sheet 4 and the docking ring 6 is welding. The number of electrode sheets 4 is two, which are respectively located inside the two docking rings 6 and the docking rings 6. The specific shape of the docking ring 6 and the docking ring 6 is annular, and the specific shape of the electrode sheet 4 is circular. The electrode sheet 4 and the docking ring 6 and the docking ring 6 are adapted to each other. By setting the docking ring 6 and the docking ring 6, and setting the electrode sheet 4 and the docking ring 6 and the docking ring 6 to be adapted to each other, and the specific connection method of the electrode sheet 4 and the docking ring 6 and the docking ring 6 is welding, when the electrode sheet 4 and the circular plate ceramic sheet 3 are connected, the electrode sheet 4 and the docking ring 6 can be directly placed inside the docking ring 6 and the docking ring 6 can then be welded to the electrode sheet 4 and the docking ring 6, which reduces the difficulty of installation and increases the stability of installation.
[0025] Furthermore, referring to the copper wire 2 in the figure, the inside of the welding groove 5 is welded with the copper wire 2 copper wire 2, the specific material of the copper wire 2 copper wire 2 is copper, and the outer wall of the copper wire 2 copper wire 2 is coated with tin. By setting the welding groove 5 welding groove 5 and setting the copper wire 2 copper wire 2 welded to the inside of the welding groove 5 welding groove 5, the contact area between the copper wire 2 copper wire 2 and the electrode sheet 4 electrode sheet 4 is larger, the welding is more convenient and the welding relationship is also made stronger. At the same time, the reliability and durability of the connection are enhanced, and the influence of the external environment is effectively resisted, thereby ensuring that the varistor can still work stably in a complex environment, and improving the safety and efficiency of the overall circuit.
[0026] In addition, the specific material of the insulating coating 1 is epoxy rubber, which has excellent ozone resistance, oil resistance, heat resistance, aging resistance, solvent resistance, and flame retardancy. When applied to varistors, it can utilize its excellent damping performance, air tightness and oil resistance to improve the stability and reliability of the varistors.
[0027] In specific implementation, the varistor cable is connected in the circuit. When there is an excessively high voltage in the circuit, that is, a surge voltage, the resistance of the varistor will drop rapidly, allowing a large current to pass through, while clamping the voltage at a relatively fixed value. This characteristic enables the varistor to effectively absorb excess current and protect sensitive devices in the circuit from damage by excessively high voltage. Conventional varistors generally use silver materials for electrodes in varistors, and silver materials are prone to ion transition in electrodes when facing surge tests, causing product performance to deteriorate quickly and reducing the service life of the resistor. In this practical application, the electrode sheet 4 is made of copper, and the copper docking ring 6 is more stable than the silver electrode, and the product has a longer service life under the test conditions of multiple small current shocks.
[0028] By setting the electrode sheet 4 to be made of copper, the cost of the varistor is lowered, while its use stability and service life are increased, thereby improving the practicality of the resistor.
[0029] By providing a welding groove 5 on the top surface of the electrode sheet 4, the contact area between the copper wire 2 and the electrode sheet 4 is increased, welding is more convenient and the welding relationship is also more solid. At the same time, the reliability and durability of the connection are enhanced, and the influence of the external environment is effectively resisted, thereby ensuring that the varistor can still work stably in a complex environment, and improving the safety and efficiency of the overall circuit.
[0030] Working principle: When the varistor is connected to the circuit, when there is an excessively high voltage, i.e., a surge voltage, in the circuit, the resistance of the varistor will drop rapidly, allowing a large current to pass through, while clamping the voltage at a relatively fixed value. This characteristic enables the varistor to effectively absorb excess current and protect sensitive devices in the circuit from damage caused by excessive voltage. Conventional varistors generally use silver as the material for the electrodes in the varistor, and silver in the electrodes is prone to ion transition when facing surge testing, causing the product performance to deteriorate quickly and reducing the service life of the resistor. In this embodiment, the electrode sheet 4 is made of copper, and the copper docking ring 6 is more stable than the silver electrode, and the product has a longer service life under the test conditions of multiple small current shocks.
[0031] By setting the electrode sheet 4 to be made of copper, the cost of the varistor is lowered, while its use stability and service life are increased, thereby improving the practicality of the resistor.
[0032] By providing a welding groove 5 on the top surface of the electrode sheet 4, the contact area between the copper wire 2 and the electrode sheet 4 is increased, welding is more convenient and the welding relationship is also more solid. At the same time, the reliability and durability of the connection are enhanced, and the influence of the external environment is effectively resisted, thereby ensuring that the varistor can still work stably in a complex environment, and improving the safety and efficiency of the overall circuit.
Claims
1. A varistor copper electrode chip, comprising an insulating coating (1), characterized in that: A circular plate ceramic sheet (3) is arranged inside the insulating coating (1), and docking rings (6) are integrally formed at the upper and lower ends of the circular plate ceramic sheet (3). An electrode sheet (4) is arranged inside the docking ring (6), and the specific material of the electrode sheet (4) is copper. A welding groove (5) is provided on the top surface of the electrode sheet (4).
2. A varistor copper electrode chip as claimed in claim 1, characterized in that: The bottom surface of the electrode sheet (4) is in direct contact with the top surface of the circular plate ceramic sheet (3), and the specific connection method between the electrode sheet (4) and the docking ring (6) is welding.
3. The varistor copper electrode chip according to claim 1, characterized in that: The number of the electrode sheets (4) is two, and they are respectively located inside the two butt-jointing rings (6).
4. The varistor copper electrode chip according to claim 1, characterized in that: The specific material of the insulating coating (1) is epoxy rubber.
5. The varistor copper electrode chip according to claim 1, characterized in that: The specific shape of the docking ring (6) is annular, the specific shape of the electrode sheet (4) is circular, and the electrode sheet (4) is compatible with the docking ring (6).
6. The varistor copper electrode chip according to claim 1, characterized in that: A copper wire (2) is welded inside the welding groove (5); the specific material of the copper wire (2) is copper, and the outer wall of the copper wire (2) is coated with tin.