I did a quick search and didn't come up with a filing date of February this year for Tesla - maybe I'm missing something. Last I found regarding metal-air battery swap was Dec. 2010, 2.5 years ago:
United States Patent | 8,450,974 |
Stewart , et al. | May 28, 2013 |
[SIZE=+1]
Electric vehicle extended range hybrid battery pack system [/SIZE]
AbstractA power source comprised of a first battery pack (e.g., a non-metal-air battery pack) and a second battery pack (e.g., a metal-air battery pack) is provided, wherein the second battery pack is only used as required by the state-of-charge (SOC) of the first battery pack or as a result of the user selecting an extended range mode of operation. Minimizing use of the second battery pack prevents it from undergoing unnecessary, and potentially lifetime limiting, charge cycles. The second battery pack may be used to charge the first battery pack or used in combination with the first battery pack to supply operational power to the electric vehicle.
Inventors: | Stewart; Sarah G. (San Francisco, CA), Kohn; Scott Ira (Redwood City, CA), Kelty; Kurt Russell (Palo Alto, CA), Straubel; Jeffrey Brian (Menlo Park, CA) | | | | |
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Applicant: | Name | City | State | Country | Type |
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Stewart; Sarah G.
Kohn; Scott Ira
Kelty; Kurt Russell
Straubel; Jeffrey Brian | San Francisco
Redwood City
Palo Alto
Menlo Park | CA
CA
CA
CA | US
US
US
US |
| |
Assignee: | Tesla Motors, Inc. (Palo Alto, CA) | | | | |
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Appl. No.: | 12/962,851 | | | | |
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Filed: | December 8, 2010
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I'm not familiar with patent processes and strategies as to the announcement timeframe of this June 20, but I'm voting for a metal-air swappable range extender in the frunk as per the hints and patent filings, intended to be complimentary to the supercharger network to eliminate range anxiety, and that it is immediately or close to operational/available. If the announcement is about anything too far in the future it will be a huge disappointment - they've primed the pump of expectation and have to deliver - otherwise the market will consider it vaporware.