Hybrid power supply and electric vehicle using the same

• US 9,764,655 B2
• Filed: 07/31/2015
• Issued: 09/19/2017
• Est. Priority Date: 07/28/2014
• Status: Active Grant

• Current Assignee: Microvast, Inc. (Microvast Holdings, Inc.)
• Original Assignee: Microvast Power Systems Co. Ltd (Microvast Holdings, Inc.)
• Inventors: Wu, Yang, Liu, Xuechun
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): PIGGUSH, AARON C
• Application Number:
  US14/815,955
• Publication Number:
  US 20160023571A1
• Time in Patent Office: 781 Days
• Field of Search: 320103, 320104, 320132, 320140
• CPC Class Codes: B60L 50/15 with additional electric power supply with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A hybrid power supply includes a first battery array, a second battery array, and a controller. The first battery array includes a plurality of first battery packs. The second battery array includes a plurality of second battery packs. The controller controls charging and discharging of the first battery array and the second battery array. The second battery array is connected in parallel with the first battery array by at least a bidirectional converter. The first battery array and the second battery array are connected to a power bus for outputting power. The first battery array has a high-rate charging/discharging performance higher than the second battery array. The second battery array has a capacity greater than the first battery array.

Claims

1. A hybrid power supply, comprising:

a first battery array comprising a plurality of first battery packs;

a second battery array comprising a plurality of second battery packs; and

a controller controlling charging and discharging of the first battery array and the second battery array;

wherein the second battery array is connected in parallel with the first battery array by at least a bidirectional converter, the first battery array and the second battery array are connected to a same power bus for outputting power simultaneously via the same power bus; and

wherein the first battery array has a high-rate charging/discharging performance higher than the second battery array, a maximal continuous discharging rate of the first battery array is in the range from 15 C to 35 C, and a maximal continuous charging rate of the first battery array is in the range from 4 C to 30 C.

2. The hybrid power supply according to claim 1, wherein the second battery array has a capacity greater than the first battery array, a ratio of the capacity between the first battery array and the second battery array is in the range from 1:

2 to 1;

10.

3. The hybrid power supply according to claim 2, wherein the ratio of the capacity between the first battery array and the second battery array is in the range from 1:

2 to 1;

8.

4. The hybrid power supply according to claim 3, wherein the ratio of the capacity between the first battery array and the second battery array is 1:

8.

5. The hybrid power supply according to claim 1, wherein the maximal continuous discharging rate of the first battery array is in the range from 20 C to 35 C.

6. The hybrid power supply according to claim 5, wherein the maximal continuous discharging rate of the first battery array is 30 C.

7. The hybrid power supply according to claim 1, wherein the maximal continuous charging rate of the first battery array is in the range from 4 C to 20 C.

8. The hybrid power supply according to claim 1, wherein the second battery array is controlled to charge the first battery array in one-way direction.

9. The hybrid power supply according to claim 1, wherein the controller controls the second battery array to charge the first battery array by the bidirectional converter in one-way direction.

10. The hybrid power supply according to claim 1, wherein the bidirectional converter is a bidirectional transformer converter.

11. The hybrid power supply according to claim 1, wherein each second battery pack is connected to the first battery array via a bidirectional converter.

12. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 4 C, and the ratio of the capacity between the first battery array and the second battery array is 1:

2.

13. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 4 C, and the ratio of the capacity between the first battery array and the second battery array is 1:

3.

14. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 4 C, and the ratio of the capacity between the first battery array and the second battery array is 1:

8.

15. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 4 C, and the ratio of the capacity between the first battery array and the second battery array is 1:

10.

16. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 10 C, and the ratio of the capacity between the first battery rate and the second battery array is 1:

2.

17. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 10 C, and the ratio of the capacity between the first battery array and the second battery array is 1:

3.

18. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 10 C, and the ratio of the capacity between the first battery array and the second battery array is 1:

8.

19. The hybrid power supply according to claim 2, wherein the maximal continuous discharging rate of the first battery array is 30 C, the maximal continuous charging rate of the first battery array is 10 C, and the ratio of the capacity between the first battery array and the second battery array is 1:

10.

20. An electric vehicle using the hybrid power supply according to claim 1.