Swappable battery system

1. A vehicle comprising:

a propulsion system;

a first battery and second power source powering the propulsion system; and

a controller configured to

enable unloading the first battery to a first charging station by propulsion of the vehicle towards and then oppositely away from the first charging station; and

subsequently enable loading a second battery from a second charging station by propulsion of the vehicle powered by the another power source towards the second charging station,

wherein the propulsion towards the first charging station is along a stacking axis of stacked batteries on the first charging station, and the propulsion towards the second charging station is along a stacking axis of stacked batteries on the second charging station.

2. The vehicle of claim 1 , wherein the controller is configured to, responsive to the vehicle docking the first charging station via the propulsion of the vehicle towards the first charging station, lock the first battery to the first charging station and unlock the first battery from the vehicle.

3. The vehicle of claim 1 , wherein the controller is configured, responsive to the vehicle docking with the second charging station via the propulsion of the vehicle towards the second charging station, lock the second battery to the vehicle and unlock the second battery from the second charging station.

4. The vehicle of claim 1 , wherein the propulsion towards the first and second charging stations docks the vehicle with the first and second charging stations respectively, and the first and second charging stations are fixed.

5. The vehicle of claim 1 , further comprising a stack of electrically connected batteries coupled to the propulsion system and initially including the first battery, wherein the controller is configured, responsive to the vehicle docking the stack with the first charging station via the propulsion towards the first charging station, transmit a first signal to the stack that locks two or more of the batteries of the stack to the first charging station and unlocks the two or more of the batteries from the vehicle.

6. The vehicle of claim 5 , wherein pairs of adjacent batteries in the stack include a joint for communicating data between the adjacent batteries and a joint for communicating coolant between the adjacent batteries.

7. The vehicle of claim 1 , further comprising guides extending from a position of the first battery prior to being unloaded to a front end or a back end of the vehicle, wherein the controller is configured, prior to the first battery being unloaded from the vehicle, to cause the first battery to slide along the guides to the front end or the back end of the vehicle for unloading to the first charging station.

8. The vehicle of claim 1 , further comprising a protective structure between the first battery and the first charging station, wherein the controller is configured to move the protective structure prior to the propulsion of the vehicle towards the first charging station that docks the vehicle with the first charging station.

9. The vehicle of claim 1 , further comprising an active suspension for raising and lowering the vehicle, wherein the controller is configured to utilize the active suspension to align the vehicle with the first and second charging stations.

10. The vehicle of claim 1 , wherein the first charging station includes a third battery that, responsive to the propulsion of the vehicle towards the first charging station, engages the first battery, and one of the first battery and the fourth battery includes protruding connectors configured to align the first battery with the fourth battery as the vehicle propels towards the first charging station.

11. The vehicle of claim 1 , wherein the another power source is a third battery, and prior to the first battery being unloaded from the vehicle, the controller is configured to power the propulsion system and charge the third battery using the first battery.

12. The vehicle of claim 1 , wherein each of the first and second batteries comprises two stacking faces each configured to join with one of the stacking faces of another one of the of the batteries, and wherein the two stacking faces of each of the batteries are the largest faces of the battery.

13. The vehicle of claim 1 , wherein the first charging station is configured, responsive to the first battery being unloaded to the first charging station:

charge the first battery; and

subsequently load the first battery to another vehicle responsive to a propulsion of the another vehicle towards the first charging station.

14. A method for operating a vehicle including a first battery and another power source powering a propulsion system, comprising:

docking and unloading the first battery to a first charging station by propulsion of the vehicle towards and then away from the first charging station; and

subsequently docking and loading a second battery onto the vehicle from a second charging station by propulsion of the vehicle using the another power source towards the second charging station, wherein the propulsion towards the first charging station is along a stacking axis of batteries on the first charging station and the propulsion towards the second charging station is along a stacking axis of batteries on the second charging station.

15. The method of claim 14 , further comprising:

responsive to the vehicle docking the first charging station, and before the propulsion away from the first charging station, locking the first battery to the first charging station and unlocking the first battery from the vehicle; and

responsive to the vehicle docking the second charging station, locking the second battery to the vehicle and unlocking the second battery from the second charging station.

16. The method of claim 15 , wherein the first charging station is configured, responsive to the vehicle docking the first charging station, and before the propulsion away from the first charging station, to transmit one or more signals to the first battery that locks the first battery to the first charging station and unlocks the first battery from the vehicle.

17. The method of claim 14 , further comprising, prior to the vehicle docking with the first charging station, powering the propulsion system and charging the another power source via the first battery.

18. A vehicle comprising:

a propulsion system;

a first battery, wherein the first battery comprises two stacking faces each configured to join with a stacking face of another battery, and wherein the two stacking faces are the largest faces of the first battery;

another power source powering the propulsion system, and

a controller configured to

enable unloading the first battery to a first charging station by propulsion of the vehicle towards and then oppositely away from the first charging station; and

subsequently enable loading a second battery from a second charging station by propulsion of the vehicle powered by the another power source towards the second charging station.

19. The vehicle of claim 1 , wherein the first battery, responsive to the propulsion of the vehicle towards the first charging station, engages a battery base of the first charging station, and the first battery or the first charging station includes protruding connectors configured to align the first battery with the battery base of the first charging station as the vehicle propels towards the first charging station, and wherein the second battery, responsive to the propulsion of the vehicle towards the second charging station, engages a battery base on the vehicle, and the battery base or the second battery includes protruding connectors configured to align the second battery with the battery base as the vehicle propels towards the second charging station.

20. The vehicle of claim 1 , wherein the vehicle is an aerial vehicle, and wherein one or more connector elements of the first battery is axisymmetric.