Ultrasonic electrode core series connection and diaphragm composite module

Abstract

The invention relates to an ultrasonic electrode core series connection and diaphragm composite module which comprises a diaphragm body, a plurality of first ultrasonic electrode cores and a plurality of second ultrasonic electrode cores. The first ultrasonic electrode cores are arranged at equal intervals and attached to one side face of the diaphragm body, and the first ultrasonic electrode cores and the diaphragm body are packaged into a whole. One end of each first ultrasonic electrode core is connected in series through a conductor wire to form a first terminal; the second ultrasonic electrode cores are arranged at equal intervals and attached to the other side face of the diaphragm body, the second ultrasonic electrode cores and the diaphragm body are packaged into a whole, and one ends of the second ultrasonic electrode cores are connected in series through the electric lead to form a second wiring end. According to the scheme, the storage space of the electrolyte is increased, heat dissipation of the battery is facilitated, a large space is provided for accommodating lithium metal crystals and chemical impurities generated in the working process of the battery, the lithium metal crystals and the chemical impurities are prevented from blocking the diaphragm by utilizing an ultrasonic cavitation effect, and the safety of the battery is improved.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, in particular to an ultrasonic electrode core series-connected and diaphragm composite module. 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 electrode core series and diaphragm composite module. The composite module is formed by arranging ultrasonic electrode cores at equal intervals and attaching them to both sides of the diaphragm body and packaging them together with the diaphragm body. The ultrasonic electrode cores are spaced apart on the diaphragm body to form vacancies. When the composite module is packaged into a battery product, more vacant spaces will be formed inside the battery. These vacant spaces are conducive to increasing the electrolyte storage space and quickly conducting the heat generated by the battery to the outside. In addition, there is a large space to accommodate lithium metal crystals and chemical impurities generated during the operation of the battery. The ultrasonic electrode core with built-in ultrasonic elements generates an ultrasonic cavitation effect when working, so that lithium metal crystals and chemical impurities will not adhere to the diaphragm, avoiding the hazards of blockage and puncture of the diaphragm by lithium metal crystals and chemical impurities, greatly improving the battery safety and extending the battery life. In addition, the ultrasonic cavitation effect can be used to accelerate the movement of the electrolyte and speed up the charging speed. In extremely cold weather, the ultrasonic cavitation effect can also be used to quickly heat up the battery from the inside.

[0009] The technical solution of the present invention is implemented as follows: an ultrasonic electrode core series-connected and diaphragm composite module includes an ultrasonic electrode core with an ultrasonic element built in, which is characterized in that it includes a diaphragm body, a plurality of first ultrasonic electrode cores, and a plurality of second ultrasonic electrode cores, each of the first ultrasonic electrode cores is arranged at equal intervals and attached to one side surface of the diaphragm body and is packaged as a whole with the diaphragm body, and one end of each first ultrasonic electrode core is connected in series with each other through a conductive wire to form a first terminal; each of the second ultrasonic electrode cores is arranged at equal intervals and attached to the other side surface of the diaphragm body and is packaged as a whole with the diaphragm body, and one end of each second ultrasonic electrode core is connected in series with each other through a conductive wire to form a second terminal.

[0010] Furthermore, the diaphragm body is a hollow cylindrical diaphragm body having an inner side and an outer side, the first ultrasonic electrode cores are arranged at equal intervals and attached to the inner side of the diaphragm body, and the second ultrasonic electrode cores are arranged at equal intervals and attached to the outer side of the diaphragm body.

[0011] Furthermore, the present invention also includes fixing plates respectively arranged at the upper and lower ends of the diaphragm body, and the fixing plates and the upper and lower ends of the diaphragm body, the first ultrasonic electrode core, and the second ultrasonic electrode core are fixedly assembled into an integral hollow battery core body.

[0012] Furthermore, the top edge and the bottom edge of the diaphragm body are respectively provided with embedding edges, 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: The composite module of the present invention arranges the ultrasonic electrode cores at equal intervals and attaches them to the two side surfaces of the diaphragm body and packages them together with the diaphragm body, and utilizes the ultrasonic electrode cores and the ultrasonic electrode cores to form vacancies on the diaphragm body. When the composite module is packaged into a battery product, more vacant spaces will be formed inside the battery. These vacant spaces are beneficial to increase the electrolyte storage space and improve the battery's storage capacity. The ultrasonic cavitation effect generated by the electrolyte conduction and the ultrasonic electrode core with built-in ultrasonic elements can be used to quickly conduct the heat generated inside the battery when it is working to the outside, which is beneficial to improving the battery's cooling performance. Secondly, more vacant spaces are formed inside the battery to accommodate the heat generated during the battery's operation. The generated lithium metal crystals and chemical impurities, while using the ultrasonic electrode core with built-in ultrasonic elements to produce ultrasonic cavitation effect when working, prevent lithium metal crystals and chemical impurities from adhering to the diaphragm, avoid the blockage and puncture of the diaphragm by lithium metal crystals and chemical impurities, greatly improve the battery safety and extend the battery life; and the ultrasonic cavitation effect can accelerate the movement of electrolyte, thereby accelerating the movement of lithium ions, thereby accelerating the charging speed; the structural design of the arrangement layout of multiple electrode cores of the present invention can also greatly improve the charging power and discharge power of the battery; and accelerating the movement of electrolyte can also prevent and solve the problem of poor fluidity and condensation of the battery in cold climate environments, which causes the battery to be unable to charge and discharge. 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 sub batteries, zinc manganese batteries, zinc silver batteries, zinc air batteries, lithium iron batteries, lead acid batteries, nickel hydrogen batteries, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the split structure of the present invention.

[0016] Figure 3 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0017] Figure 4 It is a schematic cross-sectional structure diagram of another extended solution of the present invention.

[0018] Figure 5 It is a schematic diagram of the split structure of the fixing plate and the hollow cylindrical diaphragm body in the present invention.

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the cover shell in the present invention.

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the shell in the present invention.

[0021] Figure 8 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.

[0022] Fig. 9 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.

[0023] Fig.10 It is a schematic diagram of the cross-sectional structure of the first ultrasonic electrode core or the second ultrasonic electrode core in the present invention. DETAILED DESCRIPTION

[0024] The present invention discloses an ultrasonic electrode core connected in series and a diaphragm composite module, which is a battery core module assembly for assembling ultrasonic battery products, and includes an ultrasonic electrode core with an ultrasonic element built in. In order to facilitate the description of the present invention's solution structure, 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 through it, 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 present invention, Figure 2 and Figure 5As shown, it includes a diaphragm body 1, a plurality of first ultrasonic electrode cores 2, and a plurality of second ultrasonic electrode cores 3. Each first ultrasonic electrode core 2 is arranged at equal intervals and attached to one side of the diaphragm body 1 and is packaged as a whole with the diaphragm body 1, and one end of each first ultrasonic electrode core 2 is connected in series with each other through a conductive wire to form a first terminal 42; each second ultrasonic electrode core 3 is arranged at equal intervals and attached to the other side of the diaphragm body 1 and is packaged as a whole with the diaphragm body 1, and one end of each second ultrasonic electrode core 3 is connected in series with each other through a conductive wire to form a second terminal 44. Both the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3 can be used as positive or negative electrodes, which are adjusted according to actual applications.

[0025] In order to make the above scheme easier to encapsulate a module body, so that it can be better installed in the battery housing when it is processed into a battery later, such as Figures 2 to 5 As shown, the diaphragm body 1 is a hollow cylindrical diaphragm body having an inner side and an outer side. The first ultrasonic electrode cores 2 are arranged at equal intervals and attached to the inner side of the diaphragm body 1, and the second ultrasonic electrode cores 3 are arranged at equal intervals and attached to the outer side of the diaphragm body 1.

[0026] In order to increase the strength of the entire hollow cylindrical diaphragm body and make it form a relatively fixed shape, such as Figure 2 and Figure 5 As shown, the present invention further includes fixing plates 4 respectively arranged at the upper and lower ends of the diaphragm body 1, and the fixing plates 4 and the upper and lower ends of the diaphragm body 1, the first ultrasonic electrode core 2, and the second ultrasonic electrode core 3 are fixedly assembled to form an integral hollow battery core body 10. At the same time, in order to seal the upper and lower ends of the diaphragm body 1 and the fixing plates 4 together, as shown in FIG. Figure 5 As shown, the top and bottom edges of the diaphragm body 1 are respectively provided with an embedding edge 11, and the fixing plate 4 is correspondingly provided with an embedding groove 45 which is sealed and embedded with the embedding edge 11. By embedding the embedding groove 45 and the embedding edge 11 with each other, it is easier to fix them together, increasing the ease of assembly, so that the diaphragm body 1 can be used to separate the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3 to prevent the battery from short-circuiting. In order to better ensure the sealing of the embedding groove 45 and the embedding edge 11, an adhesive can be added between them for bonding and curing.

[0027] Based on the above solution, the present invention also has an extended solution: Figure 4As shown, it also includes a first electrode sheet 5 and a second electrode sheet 6, wherein the first electrode sheet 5 covers the inner side of the diaphragm body 1, and the second electrode sheet 6 covers the outer side of the diaphragm body 1. By increasing the first electrode sheet 5 and the second electrode sheet 6, the contact area between the electrode and the electrolyte can be greatly increased, and the charging and discharging efficiency, energy density and other effects of the battery can be greatly improved.

[0028] In order to package the above-mentioned solution of the present invention into a complete battery solution, as Figure 1 , Figure 2 As shown, the present invention also includes a shell 7 with a receiving cavity 71 and a cover shell 8. The hollow battery core body 10 is set in the receiving cavity 71. The hollow battery core body 10 divides the receiving cavity 71 into a first working chamber 711 and a second working chamber 712. The cover shell 8 is placed on the cavity opening of the receiving cavity 71 of the shell. The cover shell 8 is also provided with a first terminal 81 and a second terminal 82 electrically connected to the first terminal 42 and the second terminal 44. Electrolytes are injected into the first working chamber 711 and the second working chamber 712 respectively to form a complete battery. The first working chamber 711 can be used as the positive electrode working chamber of the battery, and the second working chamber 712 is used as the negative electrode working chamber of the battery.

[0029] 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 6 and Figure 7 As shown, the cover shell 8 is also provided with a filling port 83 connected to the first working chamber 711 and the second working chamber 712; the bottom of the shell 7 is also provided with a drain port 72 connected to the first working chamber 711 and the second working chamber 712; the filling port 83 and the drain port 72 are both provided with a reusable sealing cover 84. The sealing cover 84 is connected to the filling port 83 and the drain port 72 by a threaded connection structure. At the same time, the functions of the filling port 83 and the drain port 72 can be used to facilitate the replacement of 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, and by cleaning and renewing the electrolyte, the service life of the battery can be greatly extended.

[0030] like Figure 2As shown, a sealing gasket 85 is further provided between the hollow battery core body 10 and the cover shell 8, and a sealing gasket 85 is also provided between the hollow battery core body 10 and the bottom of the accommodating chamber 71. This can further improve the sealing performance, prevent the electrolytes in the first working chamber 711 and the second working chamber 712 from mixing together, further prevent short circuits, and improve the safety and reliability of use. In actual application, the shapes of the sealing gasket 85 and the fixing plate 4 correspond to the shapes of the hollow cylindrical diaphragm body 1, and both are hollow structures; or, the two sealing gaskets 85 can also be a gasket structure that covers the cavity opening of the accommodating chamber 71, and the other gasket structure that covers the cavity bottom of the accommodating chamber 71. When this structure is adopted, the two sealing gaskets 85 are correspondingly provided with perforations 851 to prevent obstruction to injection and discharge.

[0031] like Figure 3 As shown, the edges of the fixing plate 4 are also provided with positioning protrusions 46 that contact the walls of the accommodating cavity 71. In this way, the hollow battery core body 10 can be quickly installed in place after being embedded, without any looseness or swinging, and the installation position is more accurate.

[0032] like Figure 8 , Fig. 9 and Fig.10As shown, the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3 respectively include a strip housing 21 with a working cavity 211, a sliding block 24 arranged in the working cavity 211, and a strip cover shell 22 covering the working cavity 211, wherein the sliding block 24 is provided with a permanent magnet 25, and the inner side of the strip cover shell 22 is provided with an electromagnetic coil 23 interacting with the permanent magnet 25; both ends of the sliding block 24 are also provided with spring pieces 26 for buffering; the surfaces of the strip housing 21 and the strip cover shell 22 are coated with a conductive coating 20. By providing the conductive coating 20, the conductive coating 20 of the first ultrasonic electrode core 2 and the second ultrasonic electrode core 3 can be energized with the electrolyte during charging or discharging. By providing the spring piece 26, when the electromagnetic coil 23 drives the permanent magnet 25 and the sliding block 24 to move, the spring piece 26 can provide a reverse force to return the sliding block 24, thereby realizing reciprocating motion. Specifically, the working cavity groove 211 is also provided with a limiting protrusion 212 that prevents the sliding block 24 from escaping from the working cavity groove 211. Principle of use: The external circuit energizes the electromagnetic coil 23 through a wire, so that when the current passes through the electromagnetic coil 23, a magnetic field is generated, thereby driving the permanent magnet 25 and the sliding block 24 to perform ultra-high frequency reciprocating motion in the working cavity groove 211, thereby generating ultra-high frequency vibrations. This ultra-high frequency vibration propagates in liquids and other media to form ultrasonic waves. The strip shell 21 and the strip cover shell 22 are both made of metal. After passing through the strip cover shell 22, the power supply wire of the electromagnetic coil 23 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 2 As shown, the first terminal 81 and the second terminal 82 are finally led out of the battery housing 7. In addition to the aforementioned ultrasonic element (i.e., composed of the sliding block 24, the permanent magnet 25, the electromagnetic coil 23, and the spring 26), the present invention can also be implemented by using an ultrasonic vibration motor, an ultrasonic transducer, etc.

[0033] 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, 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 electrode core series-connected and diaphragm composite module, comprising an ultrasonic electrode core with an ultrasonic element built in, characterized in that: The invention comprises a diaphragm body (1), a plurality of first ultrasonic electrode cores (2), and a plurality of second ultrasonic electrode cores (3), wherein each first ultrasonic electrode core (2) is arranged at equal intervals and attached to one side surface of the diaphragm body (1) and is packaged as a whole with the diaphragm body (1), and one end of each first ultrasonic electrode core (2) is connected in series with each other through a conductive line to form a first terminal (42); each second ultrasonic electrode core (3) is arranged at equal intervals and attached to the other side surface of the diaphragm body (1) and is packaged as a whole with the diaphragm body (1), and one end of each second ultrasonic electrode core (3) is connected in series with each other through a conductive line to form a second terminal (44).

2. According to claim 1, the ultrasonic electrode core is connected in series and the diaphragm composite module is characterized in that: The diaphragm body (1) is a hollow cylindrical diaphragm body having an inner side surface and an outer side surface, the first ultrasonic electrode cores (2) are arranged at equal intervals and attached to the inner side surface of the diaphragm body (1), and the second ultrasonic electrode cores (3) are arranged at equal intervals and attached to the outer side surface of the diaphragm body (1).

3. The ultrasonic electrode core series-connected and diaphragm composite module according to claim 2 is characterized in that: It also includes fixing plates (4) respectively arranged at the upper and lower ends of the diaphragm body (1); the fixing plates (4) and the upper and lower ends of the diaphragm body (1), the first ultrasonic electrode core (2), and the second ultrasonic electrode core (3) are fixed to each other and assembled into an integral hollow battery core body (10).

4. The ultrasonic electrode core series-connected and diaphragm composite module according to claim 3 is characterized in that: The top edge and the bottom edge of the diaphragm body (1) are respectively provided with an embedding edge (11), and the fixing plate (4) is correspondingly provided with an embedding groove (45) which is sealed and embedded with the embedding edge (11).

5. The ultrasonic electrode core series-connected and diaphragm composite module according to claim 2, characterized in that: It also comprises a first electrode sheet (5) and a second electrode sheet (6), wherein the first electrode sheet (5) is disposed on the inner side surface of the diaphragm body (1) and the second electrode sheet (6) is disposed on the outer side surface of the diaphragm body (1).

6. The ultrasonic electrode core series-connected and diaphragm composite module according to claim 3, characterized in that: It also includes a shell (7) with a accommodating cavity (71) and a cover shell (8), wherein the hollow battery core body (10) is inserted into the accommodating cavity (71), and the hollow battery core body (10) separates the accommodating cavity (71) into a first working chamber (711) and a second working chamber (712), and the cover shell (8) is placed on the cavity opening of the accommodating cavity (71) of the shell, and a first terminal (81) and a second terminal (82) electrically connected to the first terminal (42) and the second terminal (44) are also provided on the cover shell (8).

7. The ultrasonic electrode core series-connected and diaphragm composite module according to claim 6, characterized in that: The cover shell (8) is also provided with a filling port (83) connected to the first working chamber (711) and the second working chamber (712); the bottom of the shell (7) is also provided with a liquid discharge port (72) connected to the first working chamber (711) and the second working chamber (712); the filling port (83) and the liquid discharge port (72) are both provided with a reusable sealing cover (84).

8. The ultrasonic electrode core series-connected and diaphragm composite module according to claim 6, characterized in that: A sealing gasket (85) is also provided between the hollow battery core body (10) and the cover shell (8), and a sealing gasket (85) is also provided between the hollow battery core body (10) and the bottom of the accommodating cavity (71).

9. The ultrasonic electrode core series-connected and diaphragm composite module according to claim 6, characterized in that: The fixing plate (4) is also provided with positioning protrusions (46) on the edges around the fixing plate (4) and in contact with the walls around the accommodating cavity (71).

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

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