Parallel charging of electric motorcycles
Charging electric vehicles at shared charging stations may involve waiting in line to connect one's vehicle. By allowing multiple motorcycles to charge in parallel at a charging station, better use of the available space can be made and the process can be more efficient for motorcyclists riding in groups. Connectors and cables are configured to connect a chain of motorcycles in parallel to a single charging station. The connectors and cables carry the charging current to each motorcycle and include communication wiring. One motorcycle is deemed a manager motorcycle, which detects the other motorcycles in the chain and initiates charging. Each motorcycle's battery management system controls the amount of charge for its respective battery.
1. A parallel charging module for an electric motorcycle comprising:
a plug, a first socket and a second socket, wherein each of the plug, the first socket and the second socket has a positive terminal, a negative terminal, a first communication terminal and a second communication terminal;
a first electrical connection between the positive terminals of the plug, the first socket and the second socket;
a second electrical connection between the negative terminals of the plug, the first socket and the second socket;
a third electrical connection between the first communication terminals of the plug, the first socket and the second socket;
a fourth electrical connection between the second communication terminals of the plug, the first socket and the second socket; and
a switch and a 120 ohm resistor connected in series across the third and fourth electrical connections;
wherein:
the plug is configured to mate with a charging socket on the electric motorcycle;
the first socket is configured to mate with a charging station plug; and
the switch is operated depending on a type of plug inserted in the second socket.
2. The parallel charging module of claim 1 wherein the switch is normally open.
3. The parallel charging module of claim 1 wherein the switch is normally closed.
4. The parallel charging module of claim 1 wherein the switch is operated by a pushbutton in the second socket.
5. The parallel charging module of claim 1 wherein the first and second communication terminals are Controller Area Network terminals.
6. The parallel charging module of claim 1 wherein the switch is electronically operated.
7. The parallel charging module of claim 1 wherein the switch is operated by a first type of plug and not by a second type of plug.
8. The parallel charging module of claim 7 , wherein:
the second type of plug defines a notch that is not present in the first type of plug; and
a control for the switch fits inside the notch without the switch being operated.
9. The parallel charging module of claim 7 in combination with a parallel charging cable, wherein the parallel charging cable comprises:
two further plugs, each one located at an end of the parallel charging cable, wherein each of the further plugs has a further positive terminal, a further negative terminal, a further first communication terminal and a further second communication terminal;
a fifth electrical connection between the further positive terminals of the two further plugs;
a sixth electrical connection between the further negative terminals of the two further plugs;
a seventh electrical connection between the further first communication terminals of the two further plugs; and
an eighth electrical connection between the further second communication terminals of the two further plugs;
wherein the two further plugs comprise one of the first type and one of the second type.
10. A system for charging multiple electric motorcycles in parallel comprising a parallel charging module for each motorcycle and a parallel charging cable for each motorcycle; wherein each parallel charging module comprises:
a plug, a first socket and a second socket, wherein each of the plug, the first socket and the second socket has a positive terminal, a negative terminal, a first communication terminal and a second communication terminal;
a first electrical connection between the positive terminals of the plug, the first socket and the second socket;
a second electrical connection between the negative terminals of the plug, the first socket and the second socket;
a third electrical connection between the first communication terminals of the plug, the first socket and the second socket;
a fourth electrical connection between the second communication terminals of the plug, the first socket and the second socket; and
a switch and a 120 ohm resistor connected in series across the third and fourth electrical connections;
wherein:
the plug is configured to mate with a charging socket on the electric motorcycle;
the first socket is configured to mate with a charging station plug; and
the switch is operated depending on a type of plug inserted in the second socket;
wherein each parallel charging cable comprises:
two further plugs, each one located at an end of the parallel charging cable, wherein each of the further plugs has a further positive terminal, a further negative terminal, a further first communication terminal and a further second communication terminal;
a fifth electrical connection between the further positive terminals of the two further plugs;
a sixth electrical connection between the further negative terminals of the two further plugs;
a seventh electrical connection between the further first communication terminals of the two further plugs; and
an eighth electrical connection between the further second communication terminals of the two further plugs;
wherein the two further plugs comprise one of a first type that operates the switch and one of a second type that does not operate the switch.
11. The system of claim 10 comprising a pushbutton in the second socket that operates the switch.
12. The system of claim 10 wherein all the communication terminals are Controller Area Network terminals.
13. The system of claim 10 wherein the switch is electronically operated.
14. The system of claim 10 comprising:
one or more processors; and
computer-readable memory storing computer-readable instructions, which, when executed by the one or more processors, cause the system to:
detect connection of the motorcycles to each other and to the charging station plug; and
manage charging of the motorcycles.
15. The system of claim 14 , wherein the computer-readable instructions, when executed by the one or more processors, further cause the system to:
prevent further motorcycles from connecting to the motorcycles after a predetermined period of time;
prevent further motorcycles from connecting to the motorcycles after a predetermined limit of a number of motorcycles have been connected;
select one of the motorcycles to be a manager motorcycle;
assign a priority to each motorcycle to be the manager motorcycle;
initiate charging of the motorcycles;
detect when one of the motorcycles has disconnected from the remaining motorcycles; or
initiate continuation of the charging after one of the motorcycles has disconnected from the remaining motorcycles.
16. The system of claim 14 comprising multiple wireless communication interfaces, wherein the computer-readable instructions, when executed by the one or more processors, further cause:
communications between the motorcycles to continue via wireless connections when the communications are not possible via the parallel charging modules and the parallel charging cables.
17. The system of claim 14 comprising a mobile communications device with:
a further processor; and
further computer-readable memory storing further computer-readable instructions, which, when executed by the further processor, cause the system to control at least one aspect of the charging.