Wet robot docking station

1. A base station for a mobile cleaning robot, the base station comprising:

a docking structure;

at least two electrical contacts positioned on the docking structure, the at least two electrical contacts configured to contact corresponding electrical contacts of the mobile cleaning robot to charge the mobile cleaning robot; and

a platform extending forward of the docking structure, the platform comprising a plurality of raised surface features to support a cleaning pad mounted to the mobile cleaning robot, wherein the plurality of raised surface features are positioned to contact the cleaning pad of the mobile cleaning robot.

2. The base station of claim 1 , wherein each of the plurality of raised surface features includes a dome-shaped portion and has a height between 2 and 6 millimeters.

3. The base station of claim 1 , wherein the plurality of raised surface features are configured to tilt a forward portion of the mobile cleaning robot into a charging position.

4. The base station of claim 3 , wherein configurations of the plurality of raised surface features to tilt the forward portion of the mobile cleaning robot comprise configurations to tilt a rearward portion of the mobile cleaning robot such that the corresponding electrical contacts of the mobile cleaning robot apply a downward force on the at least two electrical contacts of the base station sufficient to electrically connect the corresponding electrical contacts of the mobile cleaning robot and the at least two electrical contacts of the base station.

5. The base station of claim 1 , wherein the plurality of raised surface features comprise:

a leftward set of raised surface features,

a central set of raised surface features, and

a rightward set of raised surface features,

wherein the leftward set of raised surface features is spaced apart from the central set of raised surface features to provide a path along the platform for a first wheel of the mobile cleaning robot, the path being positioned between the leftward set of raised surface features and the central set of raised surface features and being at least as wide as the first wheel of the mobile cleaning robot, and

wherein the rightward set of raised surface features is spaced apart from the central set of raised surface features to provide a path along the platform for a second wheel of the mobile cleaning robot, the path being positioned between the rightward set of raised surface features and the central set of raised surface features and being at least as wide as the second wheel of the mobile cleaning robot.

6. The base station of claim 1 , wherein the plurality of raised surface features comprise a first set of raised surface features and a second set of raised surface features,

wherein the first set of raised surface features is spaced apart from the second set of raised surface features to provide a path along the platform for a wheel of the mobile cleaning robot, the path being positioned between the first set of raised surface features and the second set of raised surface features and being at least as wide as the wheel of the mobile cleaning robot.

7. The base station of claim 1 , wherein the plurality of raised surface features are arranged along a plurality of parallel rows each extending horizontally across a width of the base station.

8. The base station of claim 7 , wherein a first set of the plurality of raised surface features along a first row of the plurality of parallel rows is staggered relative to a second set of the plurality of raised surface features along a second row of the plurality of parallel rows.

9. The base station of claim 7 , wherein the plurality of parallel rows comprise at least three parallel rows.

10. The base station of claim 7 , wherein a maximum height of a first set of the plurality of raised surface features along a first row of the plurality of parallel rows is less than a maximum height of a second set of the plurality of raised surface features along a second row of the plurality of parallel rows, the second row positioned rearward of the first row.

11. The base station of claim 1 , wherein the docking structure comprises a horizontal surface along which the at least two electrical contacts are positioned.

12. The base station of claim 1 , wherein the plurality of raised surface features are positioned forward of a rear surface of the platform, and the at least two electrical contacts are positioned above the rear surface of the platform, the rear surface of the platform being raised relative to a forward portion of the platform.

13. The base station of claim 1 , wherein the platform is configured to be disconnected from the docking structure.

14. The base station of claim 1 , wherein at least a first portion of the plurality of raised surface features are adjacent to a left outer portion of the platform, and at least a second portion of the plurality of raised surface features are adjacent to a right outer portion of the platform.

15. The base station of claim 1 , further comprising a wheel well for receiving a wheel of the mobile cleaning robot as the mobile cleaning robot moves toward the at least two electrical contacts of the base station, wherein the plurality of raised surface features are positioned forward of the wheel well.

16. The base station of claim 1 , wherein the platform comprises:

left and right outer portions that slope upward from a front edge of the platform, and

a fluid management area sloped downward from a forward portion of the platform,

wherein at least some of the plurality of raised surface features are positioned within the fluid management area.

17. The base station of claim 16 , wherein the plurality of raised surface features are taller than the left and right outer portions of the platform.

18. The base station of claim 16 , wherein the plurality of raised surface features are positioned between a fluid collection area of the fluid management area and the forward portion of the platform.

19. The base station of claim 16 , wherein:

the fluid management area is at least partially defined by:

a first sloping surface tapering from the forward portion of the platform, and

a second sloping surface tapering from a rearward portion of the platform; and

at least a portion of the plurality of raised surface features is positioned along the first sloping surface.

20. A system comprising:

a base station; and

a mobile cleaning robot,

wherein the base station comprises:

a docking structure,

at least two electrical contacts positioned on the docking structure, the at least two electrical contacts configured to contact corresponding electrical contacts of the mobile cleaning robot to charge the mobile cleaning robot, and

a platform extending forward of the docking structure, the platform comprising a plurality of raised surface features to support a cleaning pad mounted to the mobile cleaning robot, wherein the plurality of raised surface features are positioned to contact the cleaning pad of the mobile cleaning robot.

21. The system of claim 20 , further comprising:

a plurality of wheels to support the mobile cleaning robot on a floor surface, and

a cleaning pad holder configured to hold the cleaning pad on an underside of the mobile cleaning robot,

wherein the platform of the base station is configured to receive the plurality of wheels of the mobile cleaning robot and the cleaning pad held by the cleaning pad holder of the mobile cleaning robot.

22. The system of claim 21 , wherein the plurality of raised surface features comprise a first set of raised surface features and a second set of raised surface features,

wherein the first set of raised surface features is spaced apart from the second set of raised surface features to provide a path along the platform for a wheel of the plurality of wheels of the mobile cleaning robot, the path being positioned between the first set of raised surface features and the second set of raised surface features and being at least as wide as the wheel of the mobile cleaning robot.

23. The system of claim 21 , further comprising a wheel well for receiving a wheel of the plurality of wheels of the mobile cleaning robot as the mobile cleaning robot moves toward the at least two electrical contacts of the base station, wherein the plurality of raised surface features are positioned forward of the wheel well.

24. The system of claim 20 , wherein the plurality of raised surface features are positioned between a fluid collection area of a fluid management area and a forward portion of the platform.

25. The system of claim 20 , wherein the plurality of raised surface features are taller than left and right outer portions of the platform.