Electronic cigarette power supply portion

1. An electronic cigarette power supply portion comprising:

a sub-assembly housing including

an upper sub-assembly housing portion including a first portion of an integral locking feature, and

a lower sub-assembly housing portion including a second portion of the integral locking feature coupled to the first portion of the integral locking feature;

a battery;

an airflow sensor electrically connected to the battery and configured and arranged to detect a flow of air in response to a draw on an air inhalation port of an atomizer/liquid reservoir portion coupled to the electronic cigarette power supply portion;

controller circuitry electrically connected to the battery and configured and arranged to operate the electronic cigarette; and

wherein the sub-assembly housing substantially encloses the battery, the airflow sensor, and the controller circuitry;

wherein the upper sub-assembly housing and at least one of the controller circuitry and the airflow sensor form an aperture, the airflow sensor further configured and arranged to detect a flow of air through the aperture.

2. The electronic cigarette power supply portion of claim 1 , wherein the sub-assembly housing further includes

a locating pin in the lower sub-assembly housing portion; and

a locating aperture, in the upper sub-assembly housing portion, configured and arranged to receive the locating pin from the lower sub-assembly housing portion and thereby align the lower and upper sub-assembly housings portion along at least one axis.

3. The electronic cigarette power supply portion of claim 1 , further including an exterior tube with a keying feature along an interior surface of the tube; and wherein at least one of the upper and lower sub-assembly housings include a second keying feature along an exterior surface, the second keying feature configured and arranged to mate to the keying feature of the exterior tube, and axially align the sub-assembly housing within the exterior tube.

4. The electronic cigarette power supply portion of claim 1 , wherein the sub-assembly housing is configured and arranged to be assembled within a tube to form a final assembly of the electronic cigarette power supply portion.

5. An electronic cigarette power supply portion comprising:

a battery;

controller circuitry; and

a hemicylindrical port including

a fluid outlet, and

a plurality of electrical contacts electrically coupled to the battery and the controller circuitry;

wherein the fluid outlet is positioned within the hemicylindrical port and further includes an airflow gasket that circumferentially extends around the fluid outlet, the airflow gasket configured and arranged to prevent fluid egress between the fluid outlet of the electronic cigarette power supply portion and an atomizer/liquid reservoir portion configured and arranged to be coupled thereto via the hemicylindrical port; and

wherein the plurality of electrical contacts are positioned within the hemicylindrical port and outside a circumference defined by the airflow gasket.

6. The electronic cigarette power supply portion of claim 5 , wherein the hemicylindrical port is a female port and includes an outer diameter defined by a cylindrical portion and a flat portion,

wherein the port includes three or more electrical contacts configured and arranged to be communicatively coupled with three or more corresponding electrical pads on a male port of an atomizer/liquid reservoir portion, and

the three or more electrical contacts are position on the flat portion of the hemicylindrical port.

7. An electronic cigarette power supply portion comprising:

a sub-assembly housing including

an upper sub-assembly housing portion including a first portion of an integral locking feature, and

a lower sub-assembly housing portion including a second portion of the integral locking feature coupled to the first portion of the integral locking feature; and

a connector port at a proximal end of the electronic cigarette power supply portion, the connector port configured and arranged to mechanically couple the electronic cigarette power supply portion to a mating connector port of an atomizer/liquid reservoir portion;

wherein the connector port is a hemicylindrical female port and includes three electrical contacts configured and arranged to be communicatively coupled with three corresponding electrical pads on the mating connector port of the atomizer/liquid reservoir portion.

8. The electronic cigarette power supply portion of claim 7 , further including

a battery; and

controller circuitry electrically connected to the battery and configured and arranged to operate the electronic cigarette; and

wherein the connector port is further configured and arranged to electrically couple the controller circuitry of the power supply portion with at least one of a heater coil, and memory storage circuitry on the atomizer/liquid reservoir portion.