阅读说明：本技术 一种内置超声波的超声波固态锂电池 (Ultrasonic solid-state lithium battery with built-in ultrasonic waves ) 是由 彭志军 于 2021-02-03 设计创作，主要内容包括：本发明涉及一种内置超声波的超声波固态锂电池,包括电池外壳安装于电池外壳上的正极体、负极体、固态电解质、内置于正极体和/或负极体和/或固态电解质内部的超声波振动模块,超声波振动模块包括超声波振动元件及包覆于超声波振动元件四周表面的绝缘材料层,在正极体和/或负极体和/或固态电解质的顶端上或顶端外还分别设有与超声波振动元件相电性连接的接线端子。本发明具有充放电效率极高、防鼓胞、爆炸、安全性极高、性能优良、耐寒、使用寿命长,且构造简单、容易生产等优点,其与传统的电池相比,有效地解决了传统的非超声波的这类电池所存在的结晶、结晶剌穿、起鼓胞、钝化、漏液、爆炸、充放电慢、不耐寒、性能低等不足。(The invention relates to an ultrasonic solid-state lithium battery with built-in ultrasonic waves, which comprises a positive pole body, a negative pole body, a solid electrolyte and an ultrasonic vibration module, wherein the battery shell is arranged on the battery shell, the ultrasonic vibration module is arranged in the positive pole body and/or the negative pole body and/or the solid electrolyte and comprises an ultrasonic vibration element and an insulating material layer coated on the peripheral surface of the ultrasonic vibration element, and wiring terminals electrically connected with the ultrasonic vibration element are respectively arranged on the top end or outside the top end of the positive pole body and/or the negative pole body and/or the solid electrolyte. The invention has the advantages of high charging and discharging efficiency, high safety, excellent performance, cold resistance, long service life, simple structure, easy production and the like, and can prevent bulging and explosion, and effectively solve the defects of crystallization, crystal piercing, bulging, passivation, liquid leakage, explosion, slow charging and discharging, cold resistance, low performance and the like of the traditional non-ultrasonic batteries.)

1. The utility model provides a solid-state lithium cell of ultrasonic wave of built-in ultrasonic wave, includes that battery case (5) install anodal body (1), negative pole body (2), solid-state electrolyte (4) on battery case (5), its characterized in that: the ultrasonic vibration module comprises an ultrasonic vibration module (3) which is arranged in a positive electrode body (1) and/or a negative electrode body (2) and/or a solid electrolyte (4) in a built-in mode, wherein the ultrasonic vibration module (3) comprises an ultrasonic vibration element (31) and an insulating material layer (32) which covers the surface of the periphery of the ultrasonic vibration element (31), and wiring terminals (33) which are electrically connected with the ultrasonic vibration element (31) are respectively arranged on the top end or outside the top end of the positive electrode body (1) and/or the negative electrode body (2) and/or the solid electrolyte (4).

2. The ultrasonic solid-state lithium battery with built-in ultrasonic wave of claim 1, wherein: the ultrasonic vibration element (31) is an ultrasonic transducer of 1MHz or more.

3. The ultrasonic solid-state lithium battery with built-in ultrasonic wave of claim 1, wherein: the ultrasonic vibration element (31) is an ultrasonic vibration motor with a rotation speed of 1 ten thousand or more.

Technical Field

The invention relates to the field of storage batteries, in particular to a storage battery with an ultrasonic cavitation effect.

Background

A lead-acid battery is a storage battery with electrodes mainly made of lead and its oxides and electrolyte solution of sulfuric acid solution. In the discharge state of the lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in a charged state, the main components of the positive electrode and the negative electrode are lead sulfate. In the existing lead-acid battery, after the battery is used for a period of time, lead sulfate crystals are attached to the surface of an electrode plate, and along with the increase of the lead sulfate crystals, the contact between the electrode plate and an electrolyte is obstructed, so that the storage performance and the charge and discharge performance of the lead-acid battery are influenced. Over time, the electrode plates of the lead-acid storage battery are not completely worn, and the lead-acid storage battery cannot store electricity and charge and discharge electricity.

For the lead-acid battery, the applicant proposes a technical scheme with patent application number 201811098611.9 and named as "an ultrasonic lead-acid battery" to the national intellectual property office in 2018, 09 and 20, and the technical scheme mainly comprises a battery shell, a battery cover, a collection group, an ultrasonic transducer, a vibrating strip and the like. This scheme installs ultrasonic transducer at the battery top, and the vibration strip inserts the clearance between positive plate and the baffle, and between negative plate and the baffle, utilizes ultrasonic transducer during operation, and the drive vibration strip is made high frequency ultrasonic wave motion, prevents that there is the lead sulfate crystallization on battery polar plate surface, makes and keeps abundant, comprehensive contact between battery polar plate and the electrolyte, can greatly alleviate the decay of battery storage performance, prolongs the life of battery. Although the technical scheme greatly relieves the attenuation of the storage performance of the storage battery and prolongs the service life of the storage battery compared with the traditional lead-acid storage battery, the complexity and the volume of the battery structure are increased to a certain extent along with the attenuation, and the technical scheme is not an optimal solution.

The lithium ion battery mainly comprises a positive electrode (LiMn 2O4 material), a negative electrode (graphite material), an electrolyte and a diaphragm. When the power supply charges the battery, electrons on the positive electrode run to the negative electrode through an external circuit, lithium ions jump into electrolyte from the positive electrode, climb through a small bent hole on the diaphragm, swim to the negative electrode, and are combined with the electrons running in the morning. When the battery discharges, electrons on the negative electrode run to the positive electrode through an external circuit, lithium ions jump into electrolyte from the negative electrode, climb through a small bent hole on the diaphragm, swim to the positive electrode, and are combined with the electrons which run in the early period. Lithium ions first start from the positive electrode and reach the negative electrode through the electrolyte, and during the first charging and discharging of the battery, a passivation layer with solid electrolyte characteristics, namely a Solid Electrolyte Interface (SEI), is formed between the electrode and the liquid electrolyte. The SEI has double identities, is an electronic insulator and is also an excellent conductor of lithium ions, the film can protect the battery, avoid harmful reaction and lead the lithium ions to shuttle back and forth between an electrode and an electrolyte, the SEI is a key point for the performance of the lithium ion battery, and if the SEI is poor in performance, the battery has many problems. Once SEI begins to decline, the problem of piling up is followed up, like after many charges and discharges, lithium electrode deposit inhomogeneous and grow out the crystallization easily, and these lithium metal crystallization can move the structure to shelter from lithium ion, influence the removal of lithium ion, and then cause battery capacity loss, charge-discharge efficiency to reduce, or, along with the continuous increase of lithium metal crystallization, can pierce through the diaphragm, make positive, negative pole short circuit, finally lead to the battery to catch fire. In addition, the working environment temperature of the lithium ion battery is 0-40 ℃, when the environment temperature is lower than 0 ℃, capillary pores on the diaphragm, also commonly called as 'small holes', are reduced due to the principle of expansion with heat and contraction with cold, so that lithium ions are difficult to or cannot pass through the diaphragm, the lithium ions are easy to condense in the electrolyte and move slowly, the lithium ion battery cannot be normally charged and discharged, and the overall performance is reduced. Therefore, how to ensure normal charging and discharging of the lithium ion battery in a cold climate environment is also a technical problem to be solved urgently.

Therefore, for the lithium battery, the applicant proposes a technical scheme with a patent application number of 201910235529.4 and a name of "an ultrasonic intelligent temperature-increasing crystallization-preventing lithium battery" to the national intellectual property office in 2019, 03 and 27, and the scheme mainly comprises the lithium battery, an ultrasonic transducer, a temperature sensor, a control circuit board module, an ultrasonic generator, a metal shell and the like. According to the scheme, the ultrasonic transducer is arranged on the metal shell of the lithium battery, and the cavitation effect generated when the ultrasonic transducer works is utilized, so that the formation of lithium metal crystals in the lithium battery is reduced or relieved, the crystals are prevented from shielding or puncturing a diaphragm, and the service life of the lithium battery is prolonged; and under the cold climate environment, the cavitation effect of the ultrasonic wave can also be utilized, so that the lithium ions in the lithium battery can move in an accelerated manner, the temperature in the lithium battery is promoted to rise, and the problems of charging and discharging of the lithium battery under the cold climate environment are solved. Although the solution can solve the crystallization and the charging and discharging problems in the cold climate environment of the lithium battery to a great extent compared with the traditional lithium battery, the complexity and the volume of the battery structure are increased to a certain extent accompanying with the solution, and the ultrasonic wave is applied externally, so that the efficiency is not high, and the solution is not the optimal solution.

Disclosure of Invention

The present invention has been made to solve the above problems and disadvantages, and an object of the present invention is to provide an ultrasonic solid-state lithium battery with built-in ultrasonic waves, the ultrasonic solid-state lithium battery is characterized in that the ultrasonic vibration element is arranged in the positive electrode body and/or the negative electrode body and/or the solid electrolyte and directly acts on the positive electrode body and/or the negative electrode body and/or the solid electrolyte during operation, so that molecular motion in the positive electrode body and/or the negative electrode body and/or the solid electrolyte is promoted, crystallization of the positive electrode body and/or the negative electrode body and/or the solid electrolyte is eliminated, and the surface of the substance molecule of the anode body and/or the cathode body and/or the solid electrolyte is passivated, so that the mutual chemical reaction between the anode body and the solid electrolyte or between the cathode body and the solid electrolyte is avoided, and the service life of the solid lithium battery is prolonged and prolonged; moreover, the rapid movement of substance molecules brought by the ultrasonic vibration element can accelerate the movement of current electrons, and the charge-discharge efficiency is improved; the current and the electrons move quickly and smoothly, and the problems of cell bulging and explosion of the battery can be avoided; in addition, the temperature of the battery can be increased in an extremely cold environment, the problems that the battery is low in charging and discharging efficiency and cannot work normally in winter are solved, and the structural complexity of the ultrasonic battery can be greatly reduced, so that the ultrasonic battery can be developed in the light weight and modularization directions.

The technical scheme of the invention is realized as follows: the ultrasonic solid-state lithium battery with built-in ultrasonic waves comprises a positive pole body, a negative pole body and a solid electrolyte, wherein the battery shell is arranged on the battery shell, and the ultrasonic solid-state lithium battery is characterized by comprising an ultrasonic vibration module which is arranged in the positive pole body and/or the negative pole body and/or the solid electrolyte, the ultrasonic vibration module comprises an ultrasonic vibration element and an insulating material layer which is coated on the peripheral surface of the ultrasonic vibration element, and wiring terminals which are electrically connected with the ultrasonic vibration element are respectively arranged on the top end or outside the top end of the positive pole body and/or the negative pole body and/or the solid electrolyte.

Preferably, the ultrasonic vibration element is an ultrasonic transducer of 1MHz or more.

Preferably, the ultrasonic vibration element is an ultrasonic vibration motor having a rotation speed of 1 ten thousand or more.

The invention has the beneficial effects that: (1) the ultrasonic vibration element is arranged in the positive electrode body and/or the negative electrode body and/or the solid electrolyte and directly acts on the positive electrode body and/or the negative electrode body and/or the solid electrolyte during working, so that molecular motion in the positive electrode body and/or the negative electrode body and/or the solid electrolyte is promoted, crystallization of the positive electrode body and/or the negative electrode body and/or the solid electrolyte is eliminated, the surface of substance molecules of the positive electrode body and/or the negative electrode body and/or the solid electrolyte is passivated, mutual chemical reaction between the positive electrode body and the solid electrolyte or between the negative electrode body and the solid electrolyte is avoided, and the service life of the solid lithium battery is prolonged.

(2) The reason why the molecule surface of the positive electrode body and/or the negative electrode body and/or the solid electrolyte is passivated is that chemical reactions of charging or discharging can be generated between the positive electrode body and the solid electrolyte and between the positive electrode body and the solid electrolyte in the charging and discharging process, the chemical reactions start from the surface of the substance, after each chemical reaction, decomposed useless substances are generated, the decomposed substances can adhere to the surface of the positive electrode body and/or the negative electrode body and/or the solid electrolyte, and the chemical reactions between the substances are influenced, so that the charging and discharging performance and the electricity storage performance of the solid lithium battery are greatly reduced, the service life is shortened, and the number of times of charging and discharging of the solid lithium battery is said. However, in the invention, the ultrasonic vibration element is added in the positive electrode body and/or the negative electrode body and/or the solid electrolyte, and the molecules in the substance formed by utilizing the cavitation effect brought by the ultrasonic operation move violently to generate mutual friction between the molecules, so that the decomposed useless substances fall off, and the surfaces which are not decomposed and chemically reacted are re-shown, so that electrons can be contacted with the surface of the battery in the charging and discharging processes to participate in chemical reaction and maintain the performance of the battery.

(3) The rapid movement of substance molecules brought by the ultrasonic vibration element can accelerate the movement of current electrons, and the charging and discharging efficiency is improved; the current and electrons move quickly and smoothly, and the problems of cell bulging, explosion and passivation of the battery can be avoided; in addition, the temperature of the battery can be increased in an extremely cold environment, the problems that the battery is low in charging and discharging efficiency and cannot work normally in winter are solved, and the structural complexity of the ultrasonic battery can be greatly reduced, so that the ultrasonic battery can be developed in the light weight and modularization directions.

(4) The invention has the advantages of extremely high charging and discharging efficiency, cell bulging prevention, explosion prevention, extremely high safety, excellent performance, cold resistance, long service life, simple structure, easy production, accordance with industrial development and the like, and effectively solves the defects of crystallization, crystallization puncture, cell bulging, passivation, liquid leakage, explosion, slow charging and discharging, cold resistance, low performance and the like of the traditional non-ultrasonic batteries compared with the traditional batteries.

Drawings

Fig. 1 is a schematic diagram of an ultrasonic solid-state lithium battery according to the present invention.

Fig. 2 is a second schematic diagram of the ultrasonic solid-state lithium battery according to the present invention.

Fig. 3 is a schematic view of an ultrasonic vibration module according to the present invention.

Detailed Description

As shown in fig. 1 to 3, the ultrasonic solid-state lithium battery with built-in ultrasonic waves of the present invention includes a positive electrode body 1, a negative electrode body 2, a solid electrolyte 4, etc. which are mounted on a battery case 5; in order to achieve the purpose of the invention, the invention further comprises an ultrasonic vibration module 3 which is arranged in the positive electrode body 1 and/or the negative electrode body 2 and/or the solid electrolyte 4, wherein the ultrasonic vibration module 3 comprises an ultrasonic vibration element 31 and an insulating material layer 32 which is coated on the peripheral surface of the ultrasonic vibration element 31, and a connecting terminal 33 which is electrically connected with the ultrasonic vibration element 31 is respectively arranged on the top end or outside the top end of the positive electrode body 1 and/or the negative electrode body 2 and/or the solid electrolyte 4. Specifically, as shown in fig. 1 and 2, the connection terminal 33 may be mounted on the top surface of the battery case 5, i.e., outside the top ends of the positive electrode body 1, the negative electrode body 2, and the solid electrolyte 4. The ultrasonic vibration element 31 is an ultrasonic transducer of 1MHz or more. The ultrasonic vibration element 31 is an ultrasonic vibration motor having a rotation speed of 1 ten thousand or more.

On the basis of the foregoing, the present invention can manufacture the scheme shown in fig. 1, i.e., the embodiment in which the ultrasonic vibration module 3 is installed only in the solid electrolyte 4, according to actual needs. As shown in fig. 2, an embodiment in which the ultrasonic vibration module 3 is mounted in the solid electrolyte 4, the positive electrode member 1, and the negative electrode member 2 may be used. It is also possible to adopt an embodiment in which the ultrasonic vibration module 3 is mounted only in the positive electrode member 1, only in the negative electrode member 2, or both of the positive electrode member 1 and the negative electrode member 2, and so on, and seven specific embodiments may be combined on the basis of the foregoing embodiments.

The above description of the structural schemes is an embodiment of the preferred embodiments of the present invention, but it does not represent a limitation to the protection scope of the technical schemes of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention and fall into the scope of the present invention.