Method of producing granular aggregate, method of producing electrode plate, and method of producing battery

A method of producing a granular aggregate in which wet granulated substances including active material particles, conductive material particles, a binding agent for binding the active material particles and the conductive material particles, and a solvent are aggregated, the method comprising:

• dissolving the binding agent in the solvent to obtain a binding agent solution;
• adding the binding agent solution to the active material particles having a solvent absorbing property,
• performing a primary granulation step of granulating the binding agent solution and the active material particles to obtain a wet primary granular aggregate in which wet primary granulated particulates are aggregated;
• and
• mixing the conductive material particles into the wet primary granular aggregate;
• and
• performing a secondary granulation step of granulating the conductive material particles and the wet primary granular aggregate to obtain a granulated granular aggregate,
• wherein a particle size of the granulated granular aggregate is several tens of μm to several mm, and
• a solid fraction in the granulated granular aggregate is 76.0 wt % to 80 wt %.