Novel ultrasonic transducer piezoelectric ceramic structure
By attaching upper and lower electrode plates to the two electrode surfaces of the piezoelectric ceramic sheet and leading out the welding wire through electrode tabs, the problem of welding wire detachment is solved, and the structural stability of the ultrasonic transducer is improved.
Patent Information
- Application Number
- CN202520429686.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-12
AI Technical Summary
In traditional ultrasonic transducers with piezoelectric ceramic structures, the bonding wires are prone to detachment, resulting in the electrode layer being unable to withstand tensile stress.
Electrode plates and lower electrode plates are attached to the two electrode surfaces of the piezoelectric ceramic sheet, and welding wires are led out through the electrode tabs to avoid welding the welding wires directly to the electrode layer on the ceramic surface.
It effectively prevents the electrode layer from becoming too weak to withstand tensile stress due to excessive welding temperature, and the weld wire is less likely to fall off, thus improving the stability of the structure.
Smart Images
Figure CN223931872U_ABST
Abstract
Description
Technical Field
[0001] This utility model discloses a piezoelectric ceramic structure, belonging to the field of ultrasonic transducer technology, specifically relating to a novel piezoelectric ceramic structure for ultrasonic transducers. Background Technology
[0002] The primary function of an ultrasonic transducer is to convert electrical energy into mechanical energy, or vice versa. Its working principle relies on the piezoelectric effect, where certain materials generate voltage when subjected to mechanical pressure, and vice versa. Common piezoelectric materials include quartz and ceramics, and the properties of these materials enable ultrasonic transducers to have wide applications in various fields.
[0003] Traditional ultrasonic transducers have a piezoelectric ceramic structure consisting of a piezoelectric ceramic sheet, an insulating sheet, and bonding wires. The bonding wires are soldered onto the electrode layer on the ceramic sheet, which can easily cause the electrode layer to be unable to withstand tensile stress and the bonding wires to fall off. Utility Model Content
[0004] Purpose of the utility model: To provide a novel piezoelectric ceramic structure for an ultrasonic transducer, solving the problems mentioned above.
[0005] Technical solution: A novel piezoelectric ceramic structure for an ultrasonic transducer, comprising: the piezoelectric ceramic structure including: a piezoelectric ceramic sheet, an upper electrode sheet, a lower electrode sheet, a tab, and an insulating sheet;
[0006] In a further embodiment, the upper electrode plate and the lower electrode plate are respectively fixed to the upper and lower surfaces of the piezoelectric ceramic sheet, the insulating sheet is fixed to the lower surface of the lower electrode plate, and the tab is welded to the upper electrode plate or the lower electrode plate.
[0007] In a further embodiment, the electrode tab is composed of a positive electrode tab and a negative electrode tab.
[0008] In a further embodiment, the positive electrode tab and the negative electrode tab are simultaneously welded to the upper electrode plate or the lower electrode plate.
[0009] In a further embodiment, the upper electrode sheet and the lower electrode sheet are respectively welded to the upper electrode sheet and the lower electrode sheet.
[0010] In a further embodiment, the electrode tab is externally soldered with a lead wire.
[0011] Beneficial effects: This utility model involves attaching upper and lower electrode plates to the two electrode surfaces of a piezoelectric ceramic sheet, with tabs extending from the upper and lower electrode plates. The welding wire is soldered to the tabs, not to the electrode layer on the ceramic surface, thereby preventing the electrode layer from becoming weak under tensile stress due to excessive welding temperature and the welding wire from easily falling off. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the present invention.
[0013] Figure 2 This is a schematic diagram of the electrode tab welding of this utility model. Figure 1 .
[0014] Figure 3 This is a schematic diagram of the electrode tab welding of this utility model. Figure 2 .
[0015] Figure 4 This is another structural schematic diagram of the present invention.
[0016] Figure reference numerals: 1. Piezoelectric ceramic sheet; 2. Upper electrode sheet; 3. Lower electrode sheet; 5. Tab; 4. Insulating sheet. Detailed Implementation
[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0020] A novel piezoelectric ceramic structure for an ultrasonic transducer includes: a piezoelectric ceramic sheet 1, an upper electrode sheet 2, a lower electrode sheet 3, a tab 5, and an insulating sheet 4.
[0021] In one embodiment, such as Figure 1 As shown, the upper electrode plate 2 and the lower electrode plate 3 are respectively fixed to the upper and lower surfaces of the piezoelectric ceramic plate 1, the insulating plate 4 is fixed to the lower surface of the lower electrode plate 3, and the tab 5 is welded to the upper electrode plate 2 or the lower electrode plate 3.
[0022] In one embodiment, such as Figure 1 As shown, the electrode 5 is composed of a positive electrode 5 and a negative electrode 5.
[0023] In one embodiment, such as Figure 2 As shown, the positive electrode tab 5 and the negative electrode tab 5 are simultaneously welded to the upper electrode plate 2 or the lower electrode plate 3.
[0024] In one embodiment, such as Figure 3 As shown, the upper electrode plate 2 and the lower electrode plate 3 are respectively welded to the upper electrode plate 2 and the lower electrode plate 3.
[0025] In one embodiment, such as Figure 1 As shown, the electrode 5 is externally welded with a lead wire.
[0026] In one embodiment, such as Figure 4 As shown, another structure of this utility model is provided at the bottom of the piezoelectric ceramic sheet 1, and an insulating sheet 4 is provided at the bottom of the lower electrode sheet 3. At the same time, the lower electrode sheet 3 is connected to the lead wire through the tab 5, and the lead wire is welded between the top of the piezoelectric ceramic sheet 1.
[0027] Working principle: In this invention, an upper electrode plate 2 and a lower electrode plate 3 are attached to the two electrode surfaces of a piezoelectric ceramic sheet 1. The upper electrode plate 2 and the lower electrode plate 3 lead out to the electrode tabs 5. The welding wire is welded to the electrode tabs 5, not to the electrode layer on the ceramic surface, thereby preventing the electrode layer from being unable to withstand tensile force due to excessive welding temperature and the welding wire from easily falling off.
[0028] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A novel piezoelectric ceramic structure for an ultrasonic transducer, characterized in that, The piezoelectric ceramic structure includes: a piezoelectric ceramic sheet, an upper electrode sheet, a lower electrode sheet, a tab, and an insulating sheet; The upper electrode and the lower electrode are respectively fixed to the upper and lower surfaces of the piezoelectric ceramic sheet, the insulating sheet is fixed to the lower surface of the lower electrode, and the tab is welded to the upper electrode or the lower electrode.
2. The novel piezoelectric ceramic structure for an ultrasonic transducer according to claim 1, characterized in that, The electrode tab consists of a positive electrode tab and a negative electrode tab.
3. The novel piezoelectric ceramic structure for an ultrasonic transducer according to claim 2, characterized in that, The positive electrode tab and the negative electrode tab are simultaneously welded to the upper electrode plate or the lower electrode plate.
4. The novel piezoelectric ceramic structure for an ultrasonic transducer according to claim 1, characterized in that, The upper electrode plate and the lower electrode plate are respectively welded to the upper electrode plate and the lower electrode plate.
5. The novel piezoelectric ceramic structure for an ultrasonic transducer according to claim 1, characterized in that, The electrode tab is externally welded with a lead wire.