All-solid-state battery mold

Abstract

The invention relates to an all-solid-state battery mold. The pressurized component is used to provide pressure, and includes a hollow internal threaded metal part and a hollow external threaded metal part matched with the thread; the pressure conduction component is placed in the pressurized component for Conduct the pressure provided by the pressurized component to the electrodes and electrolytes placed in the all-solid-state battery; the pressure-conducting component includes a rod-shaped metal piece that can be connected to the lead wire; the insulating component is used to prevent the short-circuit of the all-solid-state battery, including insulating gaskets and insulating sleeves, The insulating gasket is placed between the bar-shaped metal piece of the external lead wire and the hollow internal thread metal piece, and the insulating sleeve is placed between the bar-shaped metal piece of the external lead wire and the hollow external thread metal piece. In addition to the necessary sealing and internal insulation of the battery mold, the present invention can provide a minimum pressure of 0 and a maximum pressure of 200 MPa without supporting equipment, has a high space utilization rate, and is suitable for environments with a minimum of -90 degrees Celsius and a maximum of 250 degrees Celsius. Test and use temperature.

Description

technical field [0001] The invention relates to a chemical battery mold, in particular to an all-solid-state battery mold, belonging to the technical field of all-solid-state battery molds. Background technique [0002] The all-solid-state battery is composed of a pure solid positive electrode, negative electrode and electrolyte according to a certain structure. Because when the all-solid-state battery is working, the positive electrode and the negative electrode will carry out solid-phase material transport through the electrolyte, so it is necessary to apply high pressure to the positive electrode, negative electrode, and electrolyte to promote material transport, thereby improving the electrochemical performance of the all-solid-state battery. For example, literature (Applied Physics A, 2016, 122, 251) reports that all-solid-state batteries using coordination hydrides as electrolytes require pressures above 100 MPa to exhibit good electrochemical performance. [0003] In...

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Problems solved by technology

[0003] In the prior art, commercial button battery molds (such as CR2032) rely on the elasticity of the shell to provide pressure, so the pressure is generally less than 10 MPa; some other battery molds (such as Chinese patent, application number CN201010604223.0; literature Nanotechnology, 2015, 26, 254001), due to the use of springs to generate pressure, according to the mechanical design manual, it is impossible to provide a pressure above 100 MPa; the pressure controllable battery assembly kit mold (Chinese patent, application number CN201620521610.0) can be controlled by using pressure The equipment exerts pressure on the upper and lower mold cores to achieve pressurization. However, the mold needs to be equipped with pressure-controllable equipment, and the pressure-controllable equipment (such as hydraulic press) has the following disadvantages at the same time or in part: (1) Large volume and weight , (2) high cost, (3) incompatible with high temperature conditions, which makes it impossible to realize batch and systematic all-solid-state battery testing and use

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