Electrical architecture for battery powered machine
An electrical architecture that allows power to be transferred to a battery powered machine while the machine is moving and that allows the machine to be charged while stationary.
1. An electrical architecture for a battery powered machine that has at least two different voltage buses, the electrical architecture comprising:
a battery module coupled to a first voltage bus and configured to supply a first voltage to the first voltage bus;
an AC/DC converter circuit coupled to the first voltage bus and configured to charge the battery module via a charge port while the battery powered machine is stationary;
a first DC/DC converter circuit coupled to the first voltage bus and to a second voltage bus, wherein the first DC/DC converter circuit is configured to generate, from the first voltage at the first voltage bus, a second voltage at the second voltage bus, and wherein the second voltage is different than the first voltage; and
a second DC/DC converter circuit configured to be coupled to the first voltage bus and between the battery module and an external power source comprising a trolley system or Charging-While-Moving (CWM) system, wherein the external power source is configured to provide power, while the battery powered machine is in motion, to a traction system via the second DC/DC converter circuit and to charge the battery module via the second DC/DC converter circuit.
2. The electrical architecture of claim 1 , wherein the traction system is coupled to the first voltage bus.
3. The electrical architecture of claim 2 , wherein the second DC/DC converter circuit is configured to receive a third voltage from the external power source.
4. The electrical architecture of claim 3 , wherein the first voltage is greater than 900V, wherein the second voltage is greater than 500V, and wherein the third voltage is greater than 1500V.
5. The electrical architecture of claim 1 , further comprising a third voltage bus configured to receive a third voltage from the external power source, wherein the third voltage is different from both the first voltage and the second voltage, wherein a traction system of the battery powered machine is coupled to the third voltage bus, and wherein the second DC/DC converter circuit is coupled between the third voltage bus and the first voltage bus.
6. The electrical architecture of claim 1 , wherein the second voltage bus is configured to be coupled to an accessories system of the battery powered machine.
7. The electrical architecture of claim 6 , wherein the accessories system includes one or more of a water pump, an electric fan, or a heating, ventilation, air conditioning (HVAC) system.
8. The electrical architecture of claim 1 , wherein the external power source includes the CWM system.
9. A battery powered machine comprising:
an electrical architecture that has at least two different voltage buses, the electrical architecture comprising:
a battery module configured to supply a first voltage to a first voltage bus;
an AC/DC converter circuit coupled to the first voltage bus and configured to charge the battery module via a charge port while the battery powered machine is stationary;
a first DC/DC converter circuit coupled to the first voltage bus and to a second voltage bus, wherein the first DC/DC converter circuit is configured to generate, from the first voltage at the first voltage bus, a second voltage at the second voltage bus, and wherein the second voltage is different than the first voltage; and
a second DC/DC converter circuit configured to be coupled to the first voltage bus and between the battery module and an external power source comprising a trolley system or Charging-While-Moving (CWM) system, wherein the external power source is configured to provide power, while the battery powered machine is in motion, to a traction system via the second DC/DC converter circuit and to charge the battery module via the second DC/DC converter circuit.
10. The battery powered machine of claim 9 , wherein the traction system is coupled to the first voltage bus.
11. The battery powered machine of claim 10 , wherein the second DC/DC converter circuit is configured to receive a third voltage from the external power source.
12. The battery powered machine of claim 9 , further comprising a third voltage bus configured to receive a third voltage from the external power source, wherein the third voltage is different from both the first voltage and the second voltage, wherein a traction system of the battery powered machine is coupled to the third voltage bus, and wherein the second DC/DC converter circuit is coupled between the third voltage bus and the first voltage bus.
13. The battery powered machine of claim 12 , wherein the first voltage is greater than 900V, wherein the second voltage is greater than 500V, and wherein the third voltage is greater than 1500V.
14. The battery powered machine of claim 9 , wherein the second voltage bus is configured to be coupled to an accessories system of the battery powered machine.
15. The battery powered machine of claim 14 , wherein the accessories system includes one or more of a water pump, an electric fan, or a heating, ventilation, and air conditioning (HVAC) system.
16. The battery powered machine of claim 9 , wherein the external power source includes the CWM system.
17. A method of providing at least two different voltages for a battery powered machine, the method comprising:
supplying, via a battery module, a first voltage to a first voltage bus;
coupling an AC/DC converter circuit to the first voltage bus and charging the battery module via a charge port while the battery powered machine is stationary;
coupling a first DC/DC converter circuit to the first voltage bus and to a second voltage bus;
generating, from the first voltage at the first voltage bus and via the first DC/DC converter circuit, a second voltage at the second voltage bus, wherein the second voltage is different than the first voltage;
coupling a second DC/DC converter circuit between the battery module and an external power source comprising a trolley system or Charging-While-Moving (CWM) system; and
providing power from the external power source, while the battery powered machine is in motion, to a traction system via the second DC/DC converter circuit and to charge the battery module via the second DC/DC converter circuit.
18. The method of claim 17 , further comprising:
coupling the battery module and a traction system to the first voltage bus.
19. The method of claim 18 , further comprising:
receiving, via the second DC/DC converter circuit, a third voltage from the external power source.
20. The method of claim 17 , further comprising:
receiving, via a third voltage bus, a third voltage from the external power source, wherein the third voltage is different from both the first voltage and the second voltage;
coupling a traction system of the battery powered machine to the third voltage bus; and
coupling the second DC/DC converter circuit between the third voltage bus and the first voltage bus.
21. The method of claim 20 , wherein the first voltage is greater than 900V, wherein the second voltage is greater than 500V, and wherein the third voltage is greater than 1500V.
22. The method of claim 17 , further comprising:
coupling the second voltage bus to an accessories system of the battery powered machine.
23. The method of claim 17 , wherein the external power source includes the CWM system.