Ultrasonic battery cell series connection and diaphragm combination module

Abstract

The invention relates to an ultrasonic battery cell series connection and diaphragm combination module, which comprises an ultrasonic electrode core with a built-in ultrasonic element, the device is characterized by comprising a corrugated folded diaphragm, and a plurality of first ultrasonic electrode cores and a plurality of second ultrasonic electrode cores which are arranged on the two sides of the corrugated folded diaphragm at intervals along the shape of the corrugated folded diaphragm, fixing pieces are respectively arranged at the upper end and the lower end of the corrugated folded diaphragm; the fixing pieces, the corrugated folded diaphragm, the first ultrasonic electrode core and the second ultrasonic electrode core are mutually connected and packaged to form an ultrasonic battery core module; the first ultrasonic electrode cores are connected in series through the conductive wires to form a first terminal, and the second ultrasonic electrode cores are connected in series through the conductive wires to form a second terminal. By utilizing the ultrasonic cavitation effect generated by the ultrasonic electrode core, the lithium metal crystal cannot be adhered to the diaphragm and the electrode core, so that the service life of the battery can be prolonged, and the safety performance of the battery can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, in particular to a battery core module for assembling batteries. Background Art

[0002] At present, lithium-ion batteries are mainly composed of positive electrodes (LiMn2O4 materials), negative electrodes (graphite materials), electrolytes and diaphragms. When the power source charges the battery, the electrons on the positive electrode run to the negative electrode through the external circuit, and the lithium ions "jump" from the positive electrode into the electrolyte, "climb" through the winding holes on the diaphragm, "swim" to the negative electrode, and combine with the electrons that have already run over. When the battery is discharged, the electrons on the negative electrode run to the positive electrode through the external circuit, and the lithium ions "jump" from the negative electrode into the electrolyte, "climb" through the winding holes on the diaphragm, "swim" to the positive electrode, and combine with the electrons that have already run over.

[0003] In the existing lithium-ion battery core, for example, a technical solution named "electrode assembly, battery cell, battery and power-consuming device" is disclosed in Chinese patent literature with patent application number 202120917584.4. The electrode assembly (i.e., battery core) of this solution is a positive electrode sheet, a negative electrode sheet and a separator stacked together, and wound countless times to form a solid cylindrical body. This type of battery core structure has major shortcomings: First, since the battery is working, it will be accompanied by a chemical material reaction process, and it is easy for lithium metal crystals and impurities left over from the chemical reaction to grow at the position of the electrode. The lithium metal crystals and impurities will continue to increase as the battery is used for a longer time; there is no space inside the solid structure of the battery core to accommodate these lithium metal crystals and chemical impurities, causing these lithium metal crystals and chemical impurities to adhere to the diaphragm and the electrode, forming a barrier, which not only blocks the movement of lithium ions, causing battery capacity loss and reduced charging and discharging efficiency, but also pierces the diaphragm, causing the positive electrode to be directly connected to the negative electrode, resulting in a short circuit, causing the battery to catch fire, posing a huge safety hazard.

[0004] Second, for this type of solid-structure battery cell, the electrolyte can only be stored between the diaphragm and the electrode by infiltration. The amount of electrolyte inside each battery cell is small, which greatly affects the number of battery charge and discharge cycles, resulting in a shorter battery life.

[0005] Third, the solid-structure battery core has difficulty dissipating heat during charging or dissipating, causing the temperature inside the battery core to rise too quickly, posing a major safety hazard. A more powerful heat dissipation and cooling system is required when used. The heat dissipation and cooling system will consume part of the power stored in the battery, resulting in a short overall battery life.

[0006] Fourth, since the working environment temperature of lithium-ion batteries is 0-40℃, when the working environment temperature is lower than 0℃, the capillaries (also called "small holes") on the diaphragm shrink due to the principle of thermal expansion and contraction, making it difficult or impossible for lithium ions to pass through the diaphragm. Lithium ions are also prone to condensation in the electrolyte, and their movement speed slows down, which in turn causes the lithium-ion battery to be unable to charge and discharge normally, and the overall performance declines. In this regard, the current solution is to use a heat dissipation and cooling system to heat the battery, but the operation of the heat dissipation and cooling system will consume part of the power stored in the battery, resulting in a short overall battery life.

[0007] In summary, there are still many problems to be solved with this solid structure battery core. Summary of the invention

[0008] The object of the present invention is to solve the above-mentioned problems and shortcomings, and to provide an ultrasonic battery cell series and diaphragm combination module, which utilizes a corrugated folded diaphragm and a structure in which ultrasonic electrode cores are arranged on both sides of the diaphragm to form more empty spaces inside the battery module. These empty spaces can facilitate the rapid conduction of battery heat to the outside of the battery, thereby enhancing the battery's own heat dissipation performance; and these empty spaces can also increase the amount of electrolyte added to the battery, thereby extending the battery life; and these empty spaces can also accommodate lithium metal crystalline substances and other chemical impurities formed after the battery chemical reaction. At the same time, the ultrasonic cavitation effect generated by the ultrasonic electrode core prevents the lithium metal crystals from adhering to the diaphragm and the electrode core, thereby greatly extending the battery life and improving the battery safety performance.

[0009] The technical solution of the present invention is implemented as follows: an ultrasonic battery cell series and diaphragm combination module, including an ultrasonic electrode core with an ultrasonic element built in, which is characterized in that it includes a corrugated folded diaphragm, and a plurality of first ultrasonic electrode cores and a plurality of second ultrasonic electrode cores arranged on both sides of the corrugated folded diaphragm along the shape of the corrugated folded diaphragm and in an interval arrangement; the upper and lower ends of the corrugated folded diaphragm are also respectively provided with fixing plates, and the fixing plates are interconnected with the corrugated folded diaphragm, the first ultrasonic electrode core, and the second ultrasonic electrode core to form an integral ultrasonic battery cell module; the first ultrasonic electrode cores are connected in series with each other through conductive wires to form a first terminal, and the second ultrasonic electrode cores are connected in series with each other through conductive wires to form a second terminal.

[0010] Furthermore, the first ultrasonic electrode cores are arranged at equal intervals in a corrugated shape on one side of the corrugated folded membrane, and the second ultrasonic electrode cores are arranged at equal intervals in a corrugated shape on the other side of the corrugated folded membrane.

[0011] Furthermore, the corrugated folded diaphragm is composed of a battery diaphragm inserted between the first ultrasonic electrode core and the second ultrasonic electrode core which are arranged at equal intervals in a corrugated shape.

[0012] Furthermore, the top edge and the bottom edge of the corrugated folded diaphragm are respectively provided with an embedding edge, and the fixing plate is correspondingly provided with an embedding groove which is sealed and embedded with the embedding edge.

[0013] Beneficial effects of the present invention: (1) The present invention adopts a corrugated folded diaphragm structure. After being assembled into a battery product, it can effectively increase the area of ​​the diaphragm involved in the work inside a battery of the same volume, thereby increasing the battery density and improving the storage capacity of electricity.

[0014] (2) Through the structural design of the corrugated folded diaphragm and the arrangement of a number of ultrasonic electrode cores on both sides of the diaphragm, after being assembled into a battery product, more empty spaces can be formed on both sides of the diaphragm inside the battery. These empty spaces can increase the amount of electrolyte added to the battery, extend the battery life, and enhance the battery's power storage capacity; these empty spaces can facilitate the rapid conduction of battery heat to the outside of the battery, thereby enhancing the battery's own heat dissipation performance; these empty spaces can also accommodate lithium metal crystals and other chemical impurities formed after the battery chemical reaction. At the same time, the ultrasonic cavitation effect generated by the ultrasonic electrode core prevents the lithium metal crystals from adhering to the diaphragm and the electrode core, which can effectively avoid the damage of lithium metal crystals and chemical impurities to the diaphragm caused by blockage, puncture, etc., which can greatly extend the battery life and improve the battery safety performance.

[0015] (3) The ultrasonic cavitation effect generated when the ultrasonic electrode core is working can accelerate the internal movement of the electrolyte, so that when the battery is working, the heat generated inside the battery is quickly transferred to the outside of the battery, reducing the safety risks of the battery and improving the safety performance of the battery.

[0016] (4) When the battery is charging, the ultrasonic cavitation effect generated by the ultrasonic electrode core can accelerate the movement of the electrolyte, thereby accelerating the movement of lithium ions, thereby improving the charging speed and efficiency.

[0017] (5) The present invention adopts a structural design in which a plurality of ultrasonic electrode cores are arranged and distributed on both sides of the diaphragm, so that the positive and negative electrodes of the battery are both composed of an electrode core array composed of multiple ultrasonic electrode cores to work synchronously, which can also greatly improve the charging power and discharging power of the battery.

[0018] (6) The ultrasonic cavitation effect generated when the ultrasonic electrode core is working can be used to accelerate the internal movement of the electrolyte. It can also prevent and solve the problem of poor electrolyte fluidity and condensation in the cold climate environment, which causes the battery to be unable to charge or discharge.

[0019] (7) The structural scheme of the present invention can be applied to the production of chemical batteries such as lithium-ion batteries, carbon batteries, alkaline batteries, lithium-manganese batteries, lithium-salt batteries, zinc-manganese batteries, zinc-silver batteries, zinc-air batteries, lithium-iron batteries, lead-acid batteries, and nickel-hydrogen batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the AA section.

[0022] Figure 3 It is a schematic diagram of the split structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure with a cross section of the ultrasonic battery core module in the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the battery housing in the present invention.

[0025] Figure 6 It is a schematic diagram of the overall structure of the first ultrasonic electrode core or the second ultrasonic electrode core in the present invention.

[0026] Figure 7 It is a partial structural schematic diagram of the first ultrasonic electrode core or the second ultrasonic electrode core in the present invention.

[0027] Figure 8 It is a schematic diagram of the split structure of the first ultrasonic electrode core or the second ultrasonic electrode core in the present invention. DETAILED DESCRIPTION

[0028] like Figures 2 to 4As shown, the ultrasonic battery cell series and diaphragm combination module described in the present invention is a battery cell module assembly for assembling ultrasonic battery products, which includes an ultrasonic electrode core with an ultrasonic element built in. In order to facilitate the description of the scheme structure of the present invention, it is described as a first ultrasonic electrode core and a second ultrasonic electrode core. The diaphragm described in the present invention is the same as a traditional battery diaphragm. The battery diaphragm refers to a thin film sheet between the positive and negative electrodes of the battery. It is a very critical part of the battery and has a direct impact on the safety and cost of the battery. Its main functions are to isolate the positive and negative electrodes and prevent the electrons in the battery from passing freely directly, and to allow the ions in the electrolyte to pass freely between the positive and negative electrodes. In order to achieve the purpose of the invention proposed by the present invention, Figure 2 and Figure 4 As shown, the scheme of the present invention also includes a corrugated folded diaphragm 1, and a plurality of first ultrasonic electrode cores 2 and a plurality of second ultrasonic electrode cores 3 arranged along the shape of the corrugated folded diaphragm 1 and at intervals on both sides of the corrugated folded diaphragm 1; the upper and lower ends of the corrugated folded diaphragm 1 are also provided with fixing plates 4, respectively, and the fixing plates 4 are interconnected with the corrugated folded diaphragm 1, the first ultrasonic electrode core 2, and the second ultrasonic electrode core 3 to form an integral ultrasonic battery core module 10; each first ultrasonic electrode core 2 is connected in series with each other through a conductive wire to form a first terminal 42, and each second ultrasonic electrode core 3 is connected in series with each other through a conductive wire to form a second terminal 44; that is, Figure 3 As shown in the dotted line area, the first terminal 42 and the second terminal 44 are used to connect the positive electrode terminal and the negative electrode terminal provided on the battery housing.

[0029] like Figure 2 As shown, each first ultrasonic electrode core 2 is arranged at equal intervals in a corrugated shape on one side of the corrugated folded diaphragm 1, and each second ultrasonic electrode core 3 is arranged at equal intervals in a corrugated shape on the other side of the corrugated folded diaphragm 1. The corrugated folded diaphragm 1 is composed of a battery diaphragm inserted between the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3 arranged at equal intervals in a corrugated shape. In other words, the shape of the corrugated folded diaphragm 1 can be defined and formed by a piece of electrode core assembly inserted between two groups of electrode core assemblies arranged at equal intervals in a corrugated shape, that is, Figure 2 The corrugated folded membrane 1 can also be a membrane that is prefabricated with a corrugated folded shape.

[0030] In order to ensure the sealing of the upper and lower ends of the ultrasonic battery core module 10, so as to prevent the electrons of the positive and negative electrodes from directly passing through the gap between the fixing plate 4 and the diaphragm, as shown in FIG. Figure 4As shown, the top and bottom edges of the corrugated folded diaphragm 1 are respectively provided with an embedding edge 11, and the fixing plate 4 is correspondingly provided with an embedding groove 40 which is sealed and embedded with the embedding edge 11, that is, the embedding edge 11 is larger than the thickness of the diaphragm 1 so that it is embedded in the embedding groove 40, and a small amount of sealing adhesive is added to ensure the sealing and firm connection between the fixing plate 4 and the top and bottom edges of the diaphragm.

[0031] like Figure 3 As shown, vertical shaping pieces 45 are respectively provided at the left and right ends of the corrugated folded diaphragm 1, and the upper and lower ends of the vertical shaping pieces 45 are respectively fixedly connected to the fixing pieces 4 located at the upper and lower ends of the corrugated folded diaphragm 1. The vertical shaping piece 45 and the fixing piece 4 are fixedly connected, and can be fixedly connected by welding, or by screws or screw holes. The present invention can enhance the structural strength of the entire ultrasonic battery core module 10 by providing the vertical shaping piece 45, while also allowing the corrugated folded diaphragm 1 to maintain a vertical upright tensioned state and not easily deformed. At the same time, in order to ensure the sealing connection between the two end sides of the diaphragm and the vertical shaping piece 45, as Figure 2 As shown, the left and right ends of the corrugated folded diaphragm 1 are respectively provided with an embedding edge 11, and the vertical shaping piece 45 is correspondingly provided with an embedding groove 40 which is sealed and embedded with the embedding edge 11; similarly, the size of the embedding edge 11 is also larger than the thickness of the diaphragm 1, so that it is embedded in the embedding groove 40, and a small amount of sealing adhesive is added, so that the vertical shaping piece 45 and the two end sides of the diaphragm can be sealed and firmly connected.

[0032] In order to package the ultrasonic battery cell module 10 into a relatively large battery product, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the present invention may also include a battery housing 5 with an inner cavity groove 51 and a housing cover 52, wherein the ultrasonic battery core module 10 is mounted in the inner cavity groove 51 and the inner cavity groove 51 is separated into a first working chamber 511 and a second working chamber 512, that is, Figure 2 As shown. After the battery product is packaged, electrolyte can be injected into the first working chamber 511 and the second working chamber 512, that is, two independent working chambers of the battery positive electrode and the battery negative electrode are formed. The first working chamber 511 and the second working chamber 512 are separated by a corrugated folded diaphragm 1, and only ions in the electrolyte can pass through the diaphragm. This principle is the same as that of traditional battery products and will not be elaborated here. One of the first working chamber 511 and the second working chamber 512 is responsible for realizing the positive electrode of the battery, and the other working chamber is responsible for realizing the negative electrode of the battery. There is no orientation or sequence restriction between the two.

[0033] like Figure 1 and Figure 3 As shown, the shell cover 52 is placed on the notch of the inner cavity groove 51 of the battery shell 5, and the shell cover 52 is also provided with a first terminal 521 electrically connected to the first terminal 42 and a second terminal 522 electrically connected to the second terminal 44.

[0034] In order to facilitate the filling or replenishment of electrolyte, and to facilitate the discharge of used electrolyte when refurbishing the battery, such as Figure 1 , Figure 3 and Figure 5 As shown, the shell cover 52 is also provided with a filling port 53 connecting the first working chamber 511 and the second working chamber 512; the bottom of the battery shell 5 is also provided with a drain port 54 connecting the first working chamber 511 and the second working chamber 512; the filling port 53 and the drain port 54 are both provided with a reusable sealing cover 55, and the sealing cover 55 is detachably connected to the filling port 53 or the drain port 54 by means of threaded connection, buckle connection, etc. When the battery needs to be maintained, it is not necessary to disassemble the shell cover 52, and only the sealing cover 55 needs to be opened to conveniently inject and discharge the battery electrolyte. At the same time, the functions of the filling port 53 and the drain port 54 can be used to conveniently replace the electrolyte, and when replacing the electrolyte, the ultrasonic cavitation effect of the ultrasonic electrode core can be used to ultrasonically clean the battery contents. By cleaning and updating the electrolyte, the service life of the battery can be greatly extended, and the performance attenuation of the battery can be ensured to be minimal.

[0035] like Figure 3 As shown, a sealing gasket 56 is also provided between the ultrasonic battery core module 10 and the shell cover 52, and a sealing gasket 56 is also provided between the ultrasonic battery core module 10 and the bottom of the inner cavity groove 51. By utilizing the sealing and buffering effect of the sealing gasket 56, when the ultrasonic battery core module 10 is assembled in the battery shell 5, the gap between the ultrasonic battery core module 10 and the battery shell 5 can be eliminated, and the first working chamber 511 and the second working chamber 512 can be sealed independently and will not be mutually connected, so as to prevent a short circuit inside the battery and improve the safety and reliability of the battery. A through hole 561 is also provided on the sealing gasket 56 at the corresponding positions of the filling port 53 and the drain port 54 to avoid blocking the filling port 53 and the drain port 54. The sealing gasket 56 is generally made of corrosion-resistant rubber material.

[0036] like Figure 7 , Figure 8As shown, the ultrasonic electrode core comprises a strip bottom shell 21 with a working cavity 211, a sliding block 24 arranged in the working cavity 211, and a strip cover shell 22 covering the strip bottom shell 21, the sliding block 24 is provided with a permanent magnet block 25, and the inner side of the strip cover shell 22 is provided with an electromagnetic coil 23 interacting with the permanent magnet block 25; both ends of the sliding block 24 are also provided with springs 26 for buffering; the surfaces of the strip bottom shell 21 and the strip cover shell 22 are coated with a conductive coating 20, and by providing the conductive coating 20, the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3, which also have a conductive function, can play a conductive role and conduct electrons into the electrolyte. The first ultrasonic electrode core 2 and the second ultrasonic electrode core 3 are both the ultrasonic electrode cores.

[0037] like Figure 8 As shown, the working cavity groove 211 is also provided with a limiting protrusion 212 to prevent the sliding block 24 from escaping from the working cavity groove 211. By providing the spring piece 26, when the electromagnetic coil 23 drives the permanent magnet block 25 and the sliding block 24 to move, the spring piece 26 can provide a reverse force, so that the sliding block 24 makes a high-speed reciprocating motion under the influence of the opposite magnetic fields of the electromagnetic coil 23 and the permanent magnet block 25, thereby generating ultra-high frequency vibrations, that is, ultrasonic high-frequency vibrations. This ultrasonic high-frequency vibration propagates in a fluid medium such as a liquid to form an ultrasonic wave. Through the ultrasonic module design of this structure, the overall volume of the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3 can be made smaller and the frequency higher. The strip bottom shell 21 and the strip cover shell 22 are both made of metal material and can be made into a cylindrical shape, an elliptical column shape, etc. The power supply wire of the electromagnetic coil 23, after passing through the strip cover shell 22, can be wound together with the second terminal 44 and the first terminal 42 to form a composite wiring harness for wiring arrangement, please refer to Figure 3 As shown, the first terminal 521 and the second terminal 522 are finally led out of the battery housing 5. Of course, in addition to the aforementioned ultrasonic solution structure, the present invention can also be implemented by using an ultrasonic vibration motor, an ultrasonic transducer, etc.

[0038] In order to facilitate the control of the operation of the ultrasonic elements in the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3, a circuit board module is generally provided outside the battery housing 5, and the ultrasonic elements in each ultrasonic electrode core are uniformly controlled through the control chip and control switch of the circuit board module. At the same time, the circuit board module can also be equipped with a Bluetooth communication module or a WiFi communication module, etc., which are used to access the Internet, and the battery can be monitored and controlled by means of computers, smart phones, etc. on the network.

Claims

1. An ultrasonic cell series-connected and diaphragm combined module, comprising an ultrasonic electrode core with an ultrasonic element built in, characterized in that: The invention comprises a corrugated folded diaphragm (1), and a plurality of first ultrasonic electrode cores (2) and a plurality of second ultrasonic electrode cores (3) arranged along the shape of the corrugated folded diaphragm (1) and at intervals on both sides of the corrugated folded diaphragm (1); the upper and lower ends of the corrugated folded diaphragm (1) are respectively provided with fixing plates (4); the fixing plates (4) and the corrugated folded diaphragm (1), the first ultrasonic electrode core (2), and the second ultrasonic electrode core (3) are interconnected and packaged to form an integral ultrasonic battery core module (10); the first ultrasonic electrode cores (2) are connected in series with each other through conductive wires to form a first connection terminal (42), and the second ultrasonic electrode cores (3) are connected in series with each other through conductive wires to form a second connection terminal (44).

2. The ultrasonic cell series and diaphragm combination module according to claim 1, characterized in that: The first ultrasonic electrode cores (2) are arranged at equal intervals in a corrugated shape on one side of the corrugated folded diaphragm (1), and the second ultrasonic electrode cores (3) are arranged at equal intervals in a corrugated shape on the other side of the corrugated folded diaphragm (1).

3. The ultrasonic cell series-connected and diaphragm combined module according to claim 2, characterized in that: The corrugated folded diaphragm (1) is composed of a battery diaphragm inserted between a first ultrasonic electrode core (2) and a second ultrasonic electrode core (3) which are arranged at equal intervals in a corrugated shape.

4. The ultrasonic cell series-connected and diaphragm combined module according to claim 3, characterized in that: The top edge and the bottom edge of the corrugated folded diaphragm (1) are respectively provided with an embedding edge (11), and the fixing plate (4) is correspondingly provided with an embedding groove (40) which is sealed and embedded with the embedding edge (11).

5. The ultrasonic cell series connection and diaphragm combination module according to claim 4, characterized in that: The left and right ends of the corrugated folded diaphragm (1) are also provided with vertical shaping pieces (45), respectively, and the upper and lower ends of the vertical shaping pieces (45) are fixedly connected to the fixing pieces (4) located at the upper and lower ends of the corrugated folded diaphragm (1), respectively.

6. The ultrasonic cell series-connected and diaphragm combined module according to claim 5, characterized in that: The left and right ends of the corrugated folded diaphragm (1) are respectively provided with embedding edges (11), and the vertical shaping piece (45) is correspondingly provided with an embedding groove (40) which is sealed and embedded with the embedding edge (11).

7. The ultrasonic cell series-connected and diaphragm combined module according to claim 1, characterized in that: The invention also comprises a battery housing (5) with an inner cavity groove (51) and a housing cover (52); the ultrasonic battery core module (10) is mounted in the inner cavity groove (51) and the inner cavity groove (51) is divided into a first working chamber (511) and a second working chamber (512); the housing cover (52) is placed on the notch of the inner cavity groove (51) of the battery housing (5); and a first terminal (521) electrically connected to the first terminal (42) and a second terminal (522) electrically connected to the second terminal (44) are respectively provided on the housing cover (52).

8. The ultrasonic cell series-connected and diaphragm combined module according to claim 7, characterized in that: The shell cover (52) is also provided with a filling port (53) connecting the first working chamber (511) and the second working chamber (512); the bottom of the battery shell (5) is also provided with a liquid discharge port (54) connecting the first working chamber (511) and the second working chamber (512); the filling port (53) and the liquid discharge port (54) are both provided with a reusable sealing cover (55).

9. The ultrasonic cell series connection and diaphragm combination module according to claim 7, characterized in that: A sealing gasket (56) is also provided between the ultrasonic battery core module (10) and the shell cover (52), and a sealing gasket (56) is also provided between the ultrasonic battery core module (10) and the bottom of the inner cavity groove (51).

10. The ultrasonic cell series connection and diaphragm combination module according to claim 1, characterized in that: The ultrasonic electrode core comprises a strip bottom shell (21) with a working cavity groove (211), a sliding block (24) arranged in the working cavity groove (211), and a strip cover shell (22) covering the strip bottom shell (21); a permanent magnet block (25) is arranged on the sliding block (24); an electromagnetic coil (23) interacting with the permanent magnet block (25) is arranged on the inner side of the strip cover shell (22); spring pieces (26) having a buffering effect are also respectively arranged at both ends of the sliding block (24); the surfaces of the strip bottom shell (21) and the strip cover shell (22) are both coated with a conductive coating (20); the first ultrasonic electrode core (2) and the second ultrasonic electrode core (3) are both the ultrasonic electrode cores.

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