Method for improving performance of flexible solid-state battery discharge detection device based on ultrasonic catalysis

Abstract

The invention discloses a method for improving the performance of a flexible solid-state battery discharge detection device based on ultrasonic catalysis. Belongs to the technical field of mutual intersection of ultrasound, fluid driving and flexible batteries, and comprises a battery bracket, a substrate, an electrolyte accommodating cavity cover, a flexible solid-state battery, an electrolyte accommodating cavity, an electrolyte, an ultrasonic transducer and an ultrasonic transducer driving circuit, according to the invention, ultrasonic waves generated by vibration of the ultrasonic vibration excitation unit are utilized to drive electrolyte flow, so that the oxidation-reduction reaction on the surface of the flexible solid-state battery electrode is catalyzed. By applying ultrasound to the flexible solid-state battery and the array battery pack, the mass transfer and electrochemical reaction rate can be effectively improved, so that the discharge performance of the flexible solid-state battery and the array battery pack is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ultrasound, fluid drive and flexible batteries, and relates to a flexible solid-state battery discharge detection device; specifically, it relates to a method for improving the performance of a flexible solid-state battery discharge detection device based on ultrasonic catalysis. Background Art

[0002] Flexible solid-state batteries are bendable and foldable batteries that use flexible materials as the battery's electrodes and dielectric layers, ensuring that they can provide sufficient energy while also adapting to different working environments. Flexible solid-state batteries are widely used in wearable devices, electronic devices, biomedicine, environmental monitoring, aerospace and other cutting-edge fields due to their flexibility, integrability, durability and high energy density.

[0003] Although the performance of flexible solid-state batteries is significantly better than that of traditional batteries, as an emerging energy technology, flexible solid-state batteries still have some defects. Flexible batteries may need to be bent and deformed repeatedly for a long time, so there are certain problems with their long-term stability; the manufacturing process of flexible batteries is relatively complicated, which may result in higher manufacturing costs; the flexible materials of flexible solid-state batteries may result in lower conductivity, thus affecting the overall working efficiency of the battery; Summary of the invention

[0004] In response to the above problems, the purpose of the present invention is to propose a method for improving the performance of a flexible solid-state battery discharge detection device based on ultrasonic catalysis. This method applies ultrasound to the flexible solid-state battery system to promote the flow of electrolyte and the electrochemical reaction rate inside the battery, thereby effectively improving the discharge performance of the flexible solid-state battery; and by simplifying the manufacturing process of the flexible solid-state battery, the manufacturing cost of the flexible solid-state battery is reduced.

[0005] The technical solution of the present invention is: a flexible solid-state battery discharge detection device according to the present invention comprises a substrate,

[0006] An ultrasonic transducer connected to the substrate is arranged on the upper wall of the substrate, an electrolyte containing chamber is arranged at the upper end of the ultrasonic transducer, and an electrolyte containing chamber cover is arranged at the top end of the electrolyte containing chamber.

[0007] Furthermore, a battery holder is arranged on the upper wall of the base plate, one end of the battery holder is connected to the base plate, and the other end thereof passes through the electrolyte containing cavity cover.

[0008] Furthermore, a flexible solid-state battery is nested at the bottom of the battery bracket after it passes through the electrolyte accommodating chamber cover;

[0009] The flexible solid-state battery is placed in the electrolyte containing chamber.

[0010] Furthermore, an ultrasonic transducer driving circuit is sleeved on the outer wall of the lower end of the ultrasonic transducer.

[0011] Furthermore, the electrolyte containing chamber is in the shape of a hollow cylindrical chamber;

[0012] Electrolyte is also added inside the electrolyte containing chamber.

[0013] Furthermore, the electrolyte containing chamber is made of materials including but not limited to: ceramic, stainless steel, or quartz glass;

[0014] The material of the electrolyte containing chamber cover includes but is not limited to: organic glass, ceramic and epoxy resin.

[0015] Furthermore, the electrolyte includes but is not limited to an alkaline electrolyte, a neutral electrolyte and an acidic electrolyte.

[0016] Furthermore, the flexible solid-state battery is composed of a positive and negative electrode of the battery and a dielectric layer, wherein the dielectric layer is plant fiber wrapped around the outer wall of the positive electrode metal wire, and the battery cathode is wound around the outer layer of the dielectric layer;

[0017] The battery anode metal wire is an aluminum wire with a purity of more than 99%;

[0018] The battery cathode material is selected from one of silver wire, platinum wire or carbon paper.

[0019] Furthermore, the operating frequency f of the ultrasonic transducer is continuously adjustable within the range of 20-200 kHz.

[0020] Furthermore, the method for improving the performance of a flexible solid-state battery discharge detection device based on ultrasonic catalysis has the following operating steps:

[0021] Step (1), placing the flexible solid-state battery in an electrolyte containing chamber containing an electrolyte, so that the positive and negative electrodes of the battery are in contact with the electrolyte, and the generated electrical signal can be collected by an external electrical signal detection unit;

[0022] Step (2), when the ultrasonic transducer driving circuit is disconnected; the ultrasonic transducer does not perform ultrasonic vibration, and the electrical signal generated at this time is collected;

[0023] Step (3), when the ultrasonic transducer driving circuit is working, the ultrasonic transducer performs ultrasonic vibration, and the ultrasonic wave generated is transmitted through the electrolyte containing chamber, and is reflected by the electrolyte containing chamber cover to form a standing wave sound field in the electrolyte containing chamber, and the electrical signal generated at this time is collected;

[0024] In step (4), the discharge data of the flexible battery under the condition without ultrasound application and the condition with ultrasound application are compared. When 5M NACL solution is used as the electrolyte, the electrical signal collected when ultrasound is applied is about 9 times that when ultrasound is not applied.

[0025] The beneficial effects of the present invention are: 1. The present invention has a series of advantages such as low cost, safety, reliability, environmental friendliness, and high stability, which makes it have significant advantages in the field of battery technology; 2. By applying ultrasound to make the electrolyte flow in the chamber, the transmission rate of protons or ions in the battery can be greatly promoted, thereby reducing the polarization effect of the battery and promoting the uniform distribution of electrochemical reactions on the electrode surface; 3. The flow of electrolyte in the chamber helps to maintain the operating temperature range of the battery and prevent the flexible solid-state battery from overheating and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a schematic structural diagram of a flexible solid-state battery in an embodiment of the present invention;

[0028] In the figure, 1 is a battery holder, 2 is a substrate, 3 is an electrolyte containing chamber cover, 4 is a flexible solid-state battery, 5 is an electrolyte containing chamber, 6 is an electrolyte, 7 is an ultrasonic transducer, and 8 is an ultrasonic transducer driving circuit. DETAILED DESCRIPTION

[0029] The specific technical scheme of the present invention is further described in detail below with reference to specific examples.

[0030] As shown in the figure, a flexible solid-state battery discharge detection device according to the present invention includes a battery holder 1, a substrate 2, an electrolyte containing chamber cover 3, a flexible solid-state battery 4, an electrolyte containing chamber 5, an electrolyte 6, an ultrasonic transducer 7, and an ultrasonic transducer driving circuit 8;

[0031] An ultrasonic transducer 7 connected to the substrate 2 is arranged on the upper wall of the substrate 2, and an electrolyte containing chamber 5 is arranged at the upper end of the ultrasonic transducer 7;

[0032] An ultrasonic transducer driving circuit 8 is provided on the outer side of the lower end of the ultrasonic transducer 7;

[0033] A flexible solid-state battery 4 is nested at the bottom of the battery holder 1 .

[0034] Furthermore, the electrolyte containing chamber 5 is in the shape of a hollow cylindrical chamber;

[0035] A flexible solid-state battery 4 is placed in the electrolyte containing chamber 5;

[0036] An electrolyte 6 is further provided inside the electrolyte containing chamber 5 .

[0037] Furthermore, the electrolyte containing chamber is made of materials including but not limited to: ceramic, stainless steel, or quartz glass;

[0038] An electrolyte containing chamber cover 3 is arranged on the top of the electrolyte containing chamber 5 .

[0039] Furthermore, the operating frequency f of the ultrasonic transducer 7 is continuously adjustable within the range of 20-200 kHz.

[0040] Furthermore, the flexible solid-state battery 4 is composed of a positive and negative electrode of the battery and a dielectric layer, wherein the dielectric layer is plant fiber wrapped around the outer wall of the positive electrode metal wire, and the battery cathode is wound around the outer layer of the dielectric layer;

[0041] The battery anode metal wire is an aluminum wire with a purity of more than 99%;

[0042] The battery cathode material can be selected from silver wire, platinum wire, carbon paper, etc.

[0043] Furthermore, the electrolyte 6 includes but is not limited to an alkaline electrolyte, a neutral electrolyte and an acidic electrolyte.

[0044] Furthermore, the material of the electrolyte containing chamber cover 3 includes but is not limited to: organic glass, ceramics and photosensitive resin.

[0045] Furthermore, a battery holder 1 is arranged on the upper wall of the substrate 2 , one end of the battery holder 1 is connected to the substrate 2 , and the other end thereof passes through the electrolyte containing chamber cover 3 and is placed in the electrolyte containing chamber 5 .

[0046] Furthermore, the method for improving the discharge performance of flexible solid-state batteries based on ultrasonic catalysis has the following steps:

[0047] (1) placing the flexible solid-state battery 4 in an electrolyte containing chamber 5 containing an electrolyte 6, so that the positive and negative electrodes of the battery are in full contact with the electrolyte, and the generated electrical signal can be collected by an external electrical signal detection unit;

[0048] (2) When the ultrasonic transducer driving circuit 8 is disconnected, the ultrasonic transducer 7 does not perform ultrasonic vibration. At this time, the battery discharge is equivalent to the discharge of a traditional flexible solid-state battery, and the electrical signal generated at this time is collected;

[0049] (3) When the ultrasonic transducer driving circuit 8 is working, the ultrasonic transducer 7 performs ultrasonic vibration, and the ultrasonic wave generated is transmitted through the electrolyte containing chamber 5, and is reflected by the electrolyte containing chamber cover 3 to form a standing wave sound field in the electrolyte containing chamber 5, and the electrical signal generated at this time is collected;

[0050] (4) Comparing the discharge data of the flexible battery under the conditions of no ultrasound and ultrasound application, when 5MNACL solution is used as the electrolyte, the electrical signal collected when ultrasound is applied is about 9 times that when no ultrasound is applied;

[0051] Therefore, the method of using ultrasonic catalysis in flexible solid-state batteries can effectively improve the discharge performance of flexible solid-state batteries.

[0052] Furthermore, the ultrasonic excitation unit performs ultrasonic excitation under the drive of the driving circuit. The ultrasonic excitation unit performs ultrasonic excitation on the electrolyte holding chamber 5. The generated ultrasonic field can generate an acoustic flow in the electrolyte holding chamber 5, thereby driving the flow of the electrolyte 6 in the chamber. This method can not only filter the insoluble matter generated by the anode and renew the electrolyte, but also effectively improve the electrochemical reaction rate inside the battery.

[0053] Furthermore, the ultrasonic excitation unit includes but is not limited to ultrasonic transducers, ceramic piezoelectric sheets, interdigital electrodes and other devices capable of exciting ultrasound.

[0054] Furthermore, the ultrasonic excitation unit is connected to an ultrasonic excitation unit driving circuit, and the output voltage of the transducer driving circuit can be adjusted as needed.

[0055] Furthermore, the battery holder 1 and the ultrasonic transducer 7 are both fixed on the substrate 2;

[0056] The ultrasonic transducer driving circuit 7 can drive the ultrasonic transducer 6 to perform high-frequency excitation on the electrolyte containing chamber 5, so that the electrolyte 6 circulates in the electrolyte containing chamber 5;

[0057] The flexible solid-state battery 4 is fixed on the battery holder 1 and is completely immersed in the electrolyte 6;

[0058] The electrolyte containing chamber cover 3 and the battery holder 1 are not fixedly matched, and the electrolyte containing chamber cover 3 can move up and down along the battery holder 1, so as to control the position of the flexible solid-state battery 4.

[0059] The present invention is a method for improving the discharge performance of a flexible solid-state battery and an array battery pack based on ultrasonic catalysis, wherein an ultrasonic transducer 7 is used as an ultrasonic excitation unit, the working frequency of the ultrasonic transducer is f=39.9kHz, and an ultrasonic transducer driving circuit 8 is driven by an ultrasonic transducer 7 which is amplified by a power amplifier after an electrical signal is sent by a signal generator. At the same time, the working voltage and current value of the ultrasonic transducer 7 are displayed by an oscilloscope;

[0060] The electrolyte containing chamber 5 is made of quartz glass with a wall thickness of 3 mm and a cylindrical tank with a height of 43 mm and an outer diameter of 50 mm, which has good corrosion resistance and high temperature resistance;

[0061] The electrolyte chamber cover 3 is made of epoxy resin by 3D printing, with a thickness of 3mm and a diameter of 50mm. The electrolyte solution is made of alkaline solution, neutral salt solution and weak acid solution of different concentrations;

[0062] The electrodes of the flexible solid-state battery 4 are made of aluminum wire and silver wire with a purity of more than 99.99%, and the diameter of the aluminum wire and silver wire is 0.2 mm, which has good bendability;

[0063] The dielectric layer of the flexible solid-state battery 4 is made of plant fiber, which has good water absorption performance and excellent ductility and bendability; the flexible solid-state battery 4 is fixed by the battery bracket 1 at a distance of λ / 2 from the bottom surface of the electrolyte containing chamber 5, where λ=c / f (c is the speed of ultrasound in the liquid, and f is the operating frequency of the ultrasonic transducer);

[0064] The standing wave acoustic field formed by the ultrasonic transducer 7 in the electrolyte holding chamber 5 can increase the reaction rate inside the battery, make the electrolyte distribution more uniform, and at the same time improve the interface contact and reduce the internal resistance of the battery, thereby increasing the overall output power of the flexible solid-state battery.

Claims

1. A flexible solid-state battery discharge detection device, characterized in that: comprising a substrate (2), An ultrasonic transducer (7) connected to the substrate (2) is arranged on the upper wall of the substrate (2), an electrolyte containing chamber (5) is arranged at the upper end of the ultrasonic transducer (7), and an electrolyte containing chamber cover (3) is arranged at the top end of the electrolyte containing chamber (5).

2. A flexible solid-state battery discharge detection device according to claim 1, characterized in that: A battery holder (1) is also arranged on the upper wall of the base plate (2); one end of the battery holder (1) is connected to the base plate (2), and the other end thereof passes through the electrolyte containing chamber cover (3).

3. A flexible solid-state battery discharge detection device according to claim 1, characterized in that: A flexible solid-state battery (4) is nested at the bottom of the battery support (1) after it passes through the electrolyte containing chamber cover (3); The flexible solid-state battery (4) is placed in the electrolyte containing chamber (5).

4. A flexible solid-state battery discharge detection device according to claim 1, characterized in that: An ultrasonic transducer driving circuit (8) is sleeved on the outer wall of the lower end of the ultrasonic transducer (7).

5. A flexible solid-state battery discharge detection device according to claim 1, characterized in that: The electrolyte containing chamber (5) is in the shape of a hollow cylindrical chamber; An electrolyte (6) is also provided inside the electrolyte containing chamber (5).

6. A flexible solid-state battery discharge detection device according to claim 5, characterized in that: The electrolyte containing chamber (5) is made of materials including but not limited to: ceramic, stainless steel, or quartz glass; The material of the electrolyte containing chamber cover (3) includes, but is not limited to: organic glass, ceramic and epoxy resin.

7. A flexible solid-state battery discharge detection device according to claim 5, characterized in that: The electrolyte (6) includes but is not limited to alkaline electrolyte, neutral electrolyte and acidic electrolyte.

8. A flexible solid-state battery discharge detection device according to claim 3, characterized in that: The flexible solid-state battery (4) is composed of a positive and negative electrode of the battery and a dielectric layer, wherein the dielectric layer is plant fiber wrapped around the outer wall of the positive electrode metal wire, and the battery cathode is wound around the outer layer of the dielectric layer; The battery anode metal wire is an aluminum wire with a purity of more than 99%; The battery cathode material is selected from one of silver wire, platinum wire or carbon paper.

9. A flexible solid-state battery discharge detection device according to claim 1, characterized in that: The operating frequency f of the ultrasonic transducer (7) is continuously adjustable within the range of 20-200 kHz.

10. A method for improving the performance of a flexible solid-state battery discharge detection device based on ultrasonic catalysis according to any one of claims 1 to 9; characterized in that: The operation steps are as follows: Step (1), placing the flexible solid-state battery (4) in an electrolyte containing chamber (5) containing an electrolyte (6), so that the positive and negative electrodes of the battery are in contact with the electrolyte (6), and the generated electrical signal can be collected by an external electrical signal detection unit; Step (2), when the ultrasonic transducer driving circuit (8) is disconnected; the ultrasonic transducer (7) does not perform ultrasonic vibration, and the electrical signal generated at this time is collected; Step (3), when the ultrasonic transducer driving circuit (8) is working, the ultrasonic transducer (7) performs ultrasonic vibration, and the ultrasonic wave generated is transmitted through the electrolyte containing chamber (5), and is reflected by the electrolyte containing chamber cover (3) to form a standing wave sound field in the electrolyte containing chamber (5), and the electrical signal generated at this time is collected; In step (4), the discharge data of the flexible battery under the condition of not applying ultrasound and under the condition of applying ultrasound are compared. When 5MNACL solution is used as the electrolyte (6), the electrical signal collected when applying ultrasound is about 9 times that when not applying ultrasound.

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