Push Android Exchange Calendar to Google Web Calendar
It is a little bit late but maybe there is a solution now: Someone else had the same problem and asked me for a solution. I have created an Android app for this purpose now. It can copy/sync a calendar (e.g. your Exchange calendar) into another calendar (e.g. a new Google calendar that you create in your me@home Google account). This way you can see your work events in your me@home Google account but your personal events won't appear in your me@work work account.

It is a one way sync from your Exchange account into your Google account:

Exchange (me@work) -> Android calendar -> SyncCal -> Android calendar -> Google (me@google)

You can find the app here: https://play.google.com/store/apps/details?id=com.calengoo.synccal

It can be used for free but it also contains an In-App purchase for an automatic sync.