Battery compartment for an HVAC controller
An HVAC controller may include a first sub-assembly and a second sub-assembly releasably securable to the first sub-assembly. The first sub-assembly may include a housing having the back and a cover, a printed circuit board at least substantially enclosed by the housing, a battery compartment formed in the back of the housing for receiving one or more batteries, and a display exposed for viewing through an aperture in the cover of the housing for viewing the display by a user. The printed circuit board may include one or more battery terminals that extend from the printed circuit board through the back of the housing and into the battery compartment. In some cases, the battery compartment may define a cup-shaped reservoir that may be configured to collect leakage from one or more of the batteries.
1. An HVAC controller, comprising:
a first sub-assembly comprising:
a housing including a back cover on a back side of the first sub-assembly and a front cover on a front side of the first sub-assembly;
a printed circuit board housed by the housing;
a display housed by the housing and operatively coupled to the printed circuit board;
the front cover of the housing including a display viewing aperture that visually exposes at least part of the display for viewing the display by a user;
a battery receiving cavity extending into the back cover of the housing and accessible from the back side of the first sub-assembly, wherein the battery receiving cavity is sized and shaped to receive at least a first part of one or more batteries;
a first connector operatively coupled to the printed circuit board and accessible via a connector aperture through the back cover;
a second sub-assembly configured to be releasably secured to the first sub-assembly adjacent to the back cover of the housing of the first sub-assembly, wherein:
the second sub-assembly defines a battery relief feature that is in registration with the battery receiving cavity of the first sub-assembly when the second sub-assembly is secured to the first sub-assembly, and the battery relief feature is sized and shaped to receive at least a second part of the one or more batteries;
the second sub-assembly includes a second connector in registration with and connected to the first connector of the first sub-assembly when the second sub-assembly is secured to the first sub-assembly; and
the second sub-assembly includes one or more terminal blocks configured to receive one or more wires from a building conditioning system.
2. The HVAC controller of claim 1 , wherein the printed circuit board includes two or more battery terminals that extend from the printed circuit board through the back cover of the housing of the first sub-assembly and into the battery receiving cavity, each of the two or more battery terminals positioned to make electrical contact with a corresponding battery terminal of the one or more batteries when the one or more batteries are at least partially received by the battery receiving cavity of the first sub-assembly.
3. The HVAC controller of claim 1 , wherein the battery relief feature is formed in a plate of the second sub-assembly, and wherein the battery relief feature extends into the plate and reduces a thickness of the plate.
4. The HVAC controller of claim 1 , wherein the battery receiving cavity defined in the back cover of the housing of the first sub-assembly is defined at least in part by an upper side wall and a lower side wall that both extend inward toward the printed circuit board.
5. The HVAC controller of claim 4 , wherein the battery receiving cavity defined in the back cover of the housing of the first sub-assembly is further defined at least in part by a back wall.
6. The HVAC controller of claim 5 , wherein the back wall is positioned between the printed circuit board and at least part of the one or more batteries when the one or more batteries are at least partially received by the battery receiving cavity.
7. The HVAC controller of claim 5 , wherein the back wall includes one or more apertures that expose at least part of the printed circuit board.
8. The HVAC controller of claim 5 , wherein the battery receiving cavity is cavity is sized and shaped to receive one or more AA batteries.
9. An HVAC controller, comprising:
a first sub-assembly comprising:
a housing including a back cover on a back side of the first sub-assembly and a front cover on a front side of the first sub-assembly;
a printed circuit board housed by the housing;
a display housed by the housing and operatively coupled to the printed circuit board;
the front cover of the housing including a display viewing aperture that visually exposes at least part of the display for viewing the display by a user;
a battery receiving cavity accessible from the back side of the first sub-assembly, wherein the battery receiving cavity is sized and shaped to receive at least a first part of one or more batteries;
a second sub-assembly configured to be releasably secured to the first sub-assembly adjacent to the back cover of the housing of the first sub-assembly, wherein:
the second sub-assembly defines a battery relief feature that is in registration with the battery receiving cavity of the first sub-assembly when the second sub-assembly is secured to the first sub-assembly, and the battery relief feature is sized and shaped to receive at least a second part of the one or more batteries; and
the second sub-assembly includes one or more terminal blocks configured to receive one or more wires from a building conditioning system.
10. The HVAC controller of claim 9 , further comprising a connector configured to pass one or more control signals between the first sub-assembly and the second sub-assembly when the second sub-assembly is secured to the first sub-assembly.
11. The HVAC controller of claim 9 , wherein the battery receiving cavity is defined at least in part by an upper side wall and a lower side wall that both extend inward toward the printed circuit board of the first sub-assembly.
12. An HVAC controller, comprising:
a first sub-assembly comprising:
a housing including a back cover on a back side of the first sub-assembly and a front cover on a front side of the first sub-assembly;
a printed circuit board housed by the housing;
a display housed by the housing and operatively coupled to the printed circuit board;
the front cover of the housing including a display viewing aperture that visually exposes at least part of the display for viewing the display by a user;
a battery receiving cavity defined in the back cover of the housing and accessible from the back side of the first sub-assembly, wherein the battery receiving cavity is sized and shaped to receive at least a first part of one or more batteries; and
a second sub-assembly configured to be releasably secured to the first sub-assembly adjacent to the back cover of the housing of the first sub-assembly, wherein the second sub-assembly defines a battery relief feature that is in registration with the battery receiving cavity of the first sub-assembly when the second sub-assembly is secured to the first sub-assembly, and wherein the battery relief feature is sized and shaped to receive at least a first part of the one or more batteries.
13. The HVAC controller of claim 12 , wherein the printed circuit board includes two or more battery terminals that extend from the printed circuit board through the back cover of the housing of the first sub-assembly and into the battery receiving cavity, each of the two or more battery terminals positioned to make electrical contact with a corresponding battery terminal of the one or more batteries when the one or more batteries are at least partially received by the battery receiving cavity of the first sub-assembly.
14. The HVAC controller of claim 12 , wherein the battery relief feature is formed in a plate of the second sub-assembly, and wherein the battery relief feature extends into the plate and reduces a thickness of the plate.
15. The HVAC controller of claim 12 , wherein the battery receiving cavity defined in the back cover of the housing of the first sub-assembly is defined at least in part by an upper side wall and a lower side wall that both extend inward toward the printed circuit board.
16. The HVAC controller of claim 15 , wherein the battery receiving cavity defined in the back cover of the housing of the first sub-assembly is further defined at least in part by a back wall.
17. The HVAC controller of claim 16 , wherein the back wall is positioned between the printed circuit board and at least part of the one or more batteries when the one or more batteries are at least partially received by the battery receiving cavity.
18. The HVAC controller of claim 16 , wherein the back wall includes one or more apertures that expose at least part of the printed circuit board.
19. The HVAC controller of claim 16 , wherein the battery receiving cavity is sized and shaped to receive one or more AA batteries.
20. The HVAC controller of claim 12 , wherein the printed circuit board hosts a wireless interface configured to wirelessly receive control signals from a remote location.