Rapid charging electric vehicle and method and apparatus for rapid charging

• US 9,786,961 B2
• Filed: 07/25/2011
• Issued: 10/10/2017
• Est. Priority Date: 07/25/2011
• Status: Active Grant

• Current Assignee: Lightening Energy
• Original Assignee: Lightening Energy
• Inventors: Dyer, Christopher K., Epstein, Michael L., Culver, Duncan
• Primary Examiner(s): Harris, Gary
• Application Number:
  US13/190,235
• Publication Number:
  US 20130029193A1
• Time in Patent Office: 2,269 Days
• Field of Search: 429 62, 429120, 429 90, 180 6521, 903907
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/302 Cooling of charging equipment
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/6557 arranged between the cells
• CPC Class Codes: H01M 10/6567 Liquids
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• 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

An electric vehicle is provided. The electric vehicle includes an electric battery powering a drive system of the vehicle. The battery has a housing and a plurality of cells within the housing. The cells are spaced apart by interconnectors. The electric vehicle also includes a coolant delivery. The coolant delivery delivers coolant to the interconnectors. An electric battery is also provided.

Claims

1. An electric vehicle comprising:

an electric battery powering a drive system of the vehicle, the battery including battery cells and a housing surrounding the battery cells, the housing having a coolant input, a coolant output and channels formed therein for passing coolant through the housing;

an electrical conduit configured for supplying current to the electric battery to charge the electric battery;

a coolant delivery, the coolant delivery delivering coolant to the coolant input such that coolant flows through the channels in the housing and cools the battery cells; and

a receptacle on the surface of the vehicle connected to the coolant delivery, the receptacle being configured such that a connector for supplying coolant from an external source is insertable in the receptacle to supply the coolant to the electric battery while the electric battery is being charged by current supplied by the electric conduit.

2. The electric vehicle recited in claim 1 further comprising a coolant return, the coolant return receiving the coolant from the coolant output.

3. The electric vehicle recited in claim 1 wherein the battery includes more than thirty cells.

4. The electric vehicle recited in claim 1 wherein the receptacle includes an electrical inflow section configured for supplying current from the connector to the electrical conduit.

5. The electric vehicle recited in claim 1 further comprising a temperature control system, an output of the coolant delivery being selectively coupleable to and decoupleable from the temperature control system.

6. The electric vehicle recited in claim 1 further comprising a controller for controlling the flow of the coolant to the battery.

7. The electric vehicle recited in claim 1 further comprising a controller using charging information of the battery to control the coolant during recharging.

8. An electric battery powering a drive system of the electric vehicle recited in claim 1, comprising:

a housing; and

a plurality of battery cells within the housing, the battery cells being spaced apart by interconnectors, the housing having a coolant input and coolant output for passing coolant through the interconnectors.

9. The electric battery recited in claim 8 further comprising at least one valve controlling the flow of coolant through the interconnectors.

10. The electric battery recited in claim 9 further comprising at least one temperature sensor sensing the temperatures of the cells.

11. The electric battery recited in claim 10 further comprising a controller receiving inputs from the at least one temperature sensor and controlling the at least one valve based on the inputs from the at least one temperature sensor.

12. The electric vehicle recited in claim 1 wherein the channels are configured such that coolant in the channels cools surfaces of the battery cells via contact with the surfaces of the battery cells.

13. The electric vehicle recited in claim 1 wherein the coolant delivery includes entry lines delivering coolant to the coolant input.

14. The electric vehicle recited in claim 1 wherein the battery further includes a plurality of temperatures sensors for measuring the temperature of the battery cells during charging of the battery cells.

15. The electric vehicle recited in claim 14 further comprising a controller receiving inputs from the at least one temperature sensor and controlling the flow of coolant through the channels based on the inputs from the at least one temperature sensor.

16. The electric vehicle recited in claim 15 further comprising at least one valve controlling the flow of coolant through the channels, the controller controlling the at least one value based on the inputs from the at least one temperature sensor.

17. The electric vehicle recited in claim 1 wherein the coolant delivery includes a plenum providing coolant to the channels.

18. The electric battery as recited in claim 8 wherein the interconnectors are porous compressible interconnectors.

19. The electric battery as recited in claim 18 wherein the interconnectors are formed of wire mesh, metal or carbon fibers retained in a compressible elastomeric matrix, or an interwoven conducting mat.

20. The electric battery as recited in claim 8 wherein the interconnectors are formed of carbon.

21. The electric battery as recited in claim 8 wherein the interconnectors are electrically conductive.

22. The electric battery as recited in claim 8 wherein the interconnectors are thermally conductive.

23. The electric battery as recited in claim 8 wherein the interconnectors are not electrically conductive.

24. The electric vehicle as recited in claim 1 wherein the coolant is a liquid coolant.

25. The electric vehicle as recited in claim 1 wherein the receptacle includes groove for receiving protrusions of the connector to hold the connector in the receptacle during the supply of the coolant.

26. The electric vehicle as recited in claim 1 wherein the coolant input is at a first lateral edge of the electric battery and the coolant output is at a second lateral edge of the electric battery opposite the first lateral edge, the channels each extending from the first lateral edge to the second lateral edge.

27. The electric vehicle as recited in claim 26 wherein the cells each extend from the first lateral edge to the second lateral edge.

28. The electric vehicle as recited in claim 1 further comprising an additional receptacle configured for receiving an additional connector and an additional electrical conduit configured for supplying current to the electric battery to charge the electric battery from the additional receptacle.

29. The electric vehicle as recited in claim 5 wherein the temperature control system includes a cooling circuit for passing coolant through the electric battery during operation of the vehicle, the temperature control system including at least one switching valve configured for coupling the coolant input to the cooling circuit during driving and to the coolant delivery during charging.