4 Contacts on Cell Phone LiPo Battery ??
You can in practice ignore the other pins. The battery will just charge if a suitable voltage and current is applied. One of the pins be connected by a thermistor to another pin, possibly ground. This is to indicate over-temperature. That's not much of a problem unless it's in an enclosed case and you're trying to charge it very quickly.

The wireless charger side of the plan I'm less sure about; it looks like you're supposed to attach it directly to the battery. I'm also unclear about how you plan to hold all this together and make contact with the battery. Note that you MUST NOT solder the battery terminals directly.