Supplying power to an electric vehicle
A power supply system that utilizes a hybrid architecture to enable low cycle-life, high energy density chemistries to be used in rechargeable batteries to extend the range of a traction battery.
1. A battery system for an electric vehicle, comprising:
a first battery having a first chemistry type and a cell energy density of not more than 500 Wh/L; and
a second battery having a second chemistry type that is different than the first chemistry type and having a cell energy density of not less than 1000 Wh/L.
2. The battery system of claim 1 , wherein the first battery has a cell energy density of not more than 400 Wh/L.
3. The battery system of claim 1 , wherein the second battery has a cell energy density of at least 1100 Wh/L.
4. The battery system of claim 1 , wherein the second battery has a cell energy density of at least 1200 Wh/L.
5. The battery system of claim 1 , wherein the first battery has an energy density per cycle (EDC) rating of 0.12-0.16 Wh/L/cycle.
6. The battery system of claim 1 , wherein the second battery has an EDC rating of at least 1.0 Wh/L/cycle.
7. The battery system of claim 1 , wherein the second battery has an EDC rating of at least 2.0 Wh/L/cycle.
8. The battery system of claim 1 , wherein the second battery has an EDC rating of at least 5.0 Wh/L/cycle.
9. The battery system of claim 1 , further comprising a third battery having a third chemistry type and a cell energy density of 400-1400 Wh/L.
10. The battery system of claim 9 , wherein the third batter battery has a cell energy density of 500-800 Wh/L.
11. The battery system of claim 9 , wherein the third batter battery has a cell energy density of not less than 1000 Wh/L.
12. A method of providing power to an electric vehicle, comprising:
selectively providing power from a first battery or a second battery to at least one system of the electric vehicle,
wherein the first battery has a first chemistry type and a cell energy density of not more than 500 Wh/L; and
wherein the second battery has a second chemistry type that is different than the first chemistry type and having a cell energy density of not less than 1000 Wh/L.
13. The method of claim 12 , wherein the first battery has a cell energy density of not more than 400 Wh/L.
14. The method of claim 12 , wherein the second battery has a cell energy density of at least 1100 Wh/L.
15. The method of claim 12 , wherein the second battery has a cell energy density of at least 1200 Wh/L.
16. The method of claim 12 , wherein the first battery has an energy density per cycle (EDC) rating of 0.12-0.16 Wh/L/cycle.
17. The method of claim 12 , wherein the second battery has an EDC rating of at least 1.0 Wh/L/cycle.
18. The method of claim 12 , wherein the second battery has an EDC rating of at least 2.0 Wh/L/cycle.
19. The method of claim 12 , wherein the second battery has an EDC rating of at least 5.0 Wh/L/cycle.
20. The method of claim 12 , further comprising a third battery having a third chemistry type and a cell energy density of 400-1400 Wh/L.
21. The method of claim 20 , wherein the third batter battery has a cell energy density of 500-800 Wh/L.
22. The method of claim 20 , wherein the third batter battery has a cell energy density of not less than 1000 Wh/L.