Excel ignores double quotes around the fields, it just uses them to escape commas inside the fields.
The official way to do it is to insert a single quote at the beginning of every field that you don't want auto-converted. In practice this is a time-wasting pain in the neck and ruins your data for use outside of Excel.
The official way to do it is to insert a single quote at the beginning of every field that you don't want auto-converted. In practice this is a time-wasting pain in the neck and ruins your data for use outside of Excel.