Power integrated circuit for electric vehicle applications
Power and controller integrated circuits for electric vehicle applications are enabled. For example, a system can comprise a plurality of battery cells, and a plurality of application specific integrated circuits (ASICs) electrically coupled to the plurality of battery cells, wherein one or more ASICs of the plurality of ASICs comprises a respective power ASIC, and wherein the ASICs comprise respective bidirectional direct current to alternating current (DC-AC) converters and charge or discharge the plurality of battery cells.
1. A system, comprising:
a plurality of smart battery cells, wherein each smart battery cell comprises:
an application specific integrated circuit (ASIC), wherein the ASIC comprises:
a power ASIC that controls charging and discharging of the smart battery cell,
a bidirectional direct current to alternating current (DC-AC) converter, and
a battery cell impedance sensor, wherein the ASIC determines a health status of the of smart battery cell, according to a defined health metric, based on an outputs of the battery cell impedance sensor.
2. The system of claim 1 , further comprising an electric motor electrically coupled to the ASICs, wherein the bidirectional DC-AC converters supply alternating current to the electric motor.
3. The system of claim 1 , wherein the ASICs are communicatively coupled to each other via wireless connections.
4. The system of claim 1 , wherein the bidirectional DC-AC converters comprise respective metal oxide semiconductor field effect transistor switches (MOSFETs).
5. The system of claim 1 , wherein the ASICs further comprise respective bidirectional direct current to direct current (DC-DC) converters that charge the plurality of smart battery cells and supply direct current to a direct current component of the system.
6. A power application specific integrated circuit (ASIC) of a smart battery cell of a battery pack, wherein the power ASIC comprises:
a direct current to direct current (DC-DC) bidirectional power conversion module comprising a DC-DC converter;
a direct current to alternating current (DC-AC) bidirectional power conversion module comprising a plurality of metal oxide semiconductor field effect transistors (MOSFETs);
a processor that executes computer executable components stored in memory, wherein the computer executable components comprise a bridge component that controls one or more DC-AC bridges, or one or more DC-DC bridges; and
a battery cell impedance sensor, wherein the power ASIC determines a health status of the smart battery cell according to a defined health metric, based on an output of the battery cell impedance sensor.
7. The power ASIC of claim 6 , wherein one or more MOSFETs of the plurality of MOSFETs comprise respective pluralities of MOSFETs connected in parallel.
8. The power ASIC of claim 6 , wherein the bridge component changes one or more modes of one or more MOSFETs of the plurality of MOSFETs.
9. The power ASIC of claim 8 , wherein the one or more modes comprise one or more of an active mode, a bypass mode, or a high impedance mode.
10. The power ASIC of claim 9 , wherein the bypass mode comprises an electrical isolation of the smart battery cell from other smart battery cells in the battery pack.
11. The power ASIC of claim 9 , wherein the high impedance mode comprises a defined reduced maximum electrical load on the smart battery cell.
12. A method, comprising:
receiving, by a power application specific integrated circuit (ASIC), of a smart battery cell of a battery pack, instruction data representative of an instruction to control one or more direct current to alternating current (DC-AC) bridges of the power ASIC or one or more direct current to direct current (DC-DC) bridges of the power ASIC;
based on the instruction,
controlling, by the power ASIC, the one or more DC-AC bridges of the power ASIC using a DC-AC bidirectional power conversion module, of the power ASIC, comprising a plurality of metal oxide semiconductor field effect transistors (MOSFETs), or
controlling, by the power ASIC, the one or more DC-DC bridges of the power ASIC using a DC-DC bidirectional power conversion module comprising a DC-DC converter; and
determining, by the power ASIC, using an output of a battery cell impedance sensor of the power ASIC, a health status of the smart battery cell according to a defined health metric.
13. The method of claim 12 , further comprising:
based on the instruction, changing, by the power ASIC, one or more modes of one or more MOSFETs of the plurality of MOSFETs.
14. The method of claim 12 , wherein the instruction comprises a pulse width modulation input.
15. The method of claim 12 , wherein one or more MOSFETs of the plurality of MOSFETs comprise respective pluralities of MOSFETs connected in parallel.
16. The method of claim 12 , wherein the power ASIC is electrically coupled to an electric motor.
17. The method of claim 13 , wherein the one or more modes comprise one or more of an active mode, a bypass mode, or a high impedance mode.
18. The method of claim 17 , wherein the bypass mode comprises an electrical isolation of the smart battery cell from other smart battery cells in the battery pack.
19. The method of claim 17 , wherein the high impedance mode comprises a defined reduced maximum electrical load on the smart battery cell.
20. The method of claim 17 , wherein the active mode enables a defined maximum electrical load on the smart battery cell.