the traction battery pack (116) intending to energize the battery management module (102) via wire harness; after activation, the battery management module (102) determines the current and the voltage parameters indicative of the state of charge (SOC) of the traction battery pack (116); based on the state of charge of the traction battery pack (116), the BMS (102) send signals either to the first contactor switch (124) or the second contactor switch (126).

, Claims:We claim:
1. A power supply system (100) of an electric vehicle, the power supply system (100) comprising:
a battery management module (102) for sending signals regarding mode of operation of the electric vehicle, wherein the mode of operation being an alternating current (AC) charging mode, a direct current (DC) charging mode, or a driving mode;
an electronic control unit (104) for receiving and detecting signals from the battery management module (102) regarding mode of operation of the electric vehicle via bus (112), wherein the mode of operation being an AC/ DC charging mode, or a driving mode;
a power converter (106), a motor (108) and a transmission unit (110) connected one after the other in sequence via wire harness are controlled by the electronic control unit (104) via a bus (112)based on the signals received and detected by the electronic control unit (104) via bus (114)from the battery management module (102);
characterized in that
the battery management module (102) connected with a traction battery pack (116) incorporating a power electronic conversion module (118), and a relay (120) in between, wherein
after actuation of the ignition switch (122), the relay (120) got activated that in turn initiate the supply of power to the battery management module (102) from the traction battery pack (116) intending to energize the battery management module (102) via wire harness;
after activation, the battery management module (102) determines the current and the voltage parameters indicative of the state of charge (SOC) of the traction battery pack (116);
based on the state of charge of the traction battery pack (116), the BMS(102) send signals either to the first contactor switch (124) or the second contactor switch (126).
2. The power supply system(200) as claimed in claim 1, wherein the battery management module (102) comprising
a processing module (102-P) configured to determine various state parameters of the traction battery pack (116) measured through multiple sensors and in response to generate a traction battery pack (116) status report;
a memory unit (102-U) configured to store data related to the threshold limit of various state parameters of the traction battery pack (116); and
a controlling module (102-C) configured to send signals either to the first contactor switch (124) or the second contactor switch (126)based on the data evaluated after the comparison of determined state parameters of the traction battery pack (116)at a particular instant of time and their threshold limit by processing module (102-P).
3. The power supply system (100) as claimed in claim 2, wherein the controlling module (102-C) of the BMS send signals to the first contactor switch (124)via bus (128) when the state of charge of the traction battery pack (116)equivalent to the defined threshold charge limit.
4. The power supply system (100) as claimed in claim 3, wherein after activation of the first contactor switch (124), the traction battery pack (116) supplies power to the ECU (104) via wire harness.
5. The power supply system (100) as claimed in claim 4, wherein after activation of ECU (104), the controlling module (102-C) of the BMS (102) send signals to the ECU unit (104) for supplying power to the transmission unit (110) via power converter (106) and motor (108).
6. The power supply system (100) as claimed in claim 1, wherein the controlling module (102-C) of the BMS (102) send signals to the second contactor switch (126) via bus (130) when the state of charge of the traction battery pack (116) less than the defined threshold charge limit.
7. The power supply system (100) as claimed in claim 1, wherein the traction battery pack (116)is connected to the external charger (132) via second contactor switch (126) and wire harness after activation of the second contactor switch (126).
8. A method (200) of supplying power to an electric vehicle, the method (200) comprising the steps of
sending signals from the battery management module (BMS) (102)regarding mode of operation of the electric vehicle, wherein the mode of operation being an alternating current (AC) charging mode, a direct current (DC) charging mode, or a driving mode ;
receiving and detecting signals by an electronic control unit (104) from the battery management module (102) regarding mode of operation of the electric vehicle via bus (114), wherein the mode of operation being an AC/ DC charging mode, or a driving mode;
controlling a power converter (106), a motor (108) and a transmission unit (110) connected one after the other in sequence via wire harness by the electronic control unit (104) through bus (112) based on the signals received and detected by the electronic control unit (104) from the battery management module (102) via a bus (114);
characterized in that
connecting the battery management module (102) with the traction battery pack (116) incorporating a power electronic conversion module (118), and a relay (120) in between, wherein
activating the relay (120)after actuation of the ignition switch (122), that in turn initiates the power supply to the battery management module (102) from the traction battery pack (116) intending to energize the battery management module (102) via wire harness;
determining the current and the voltage parameters indicative of the state of charge (SOC) of the traction battery pack (116) through the battery management module (102) after activation;
sending signal either to the first contactor switch (124) or the second contactor switch (126)based on the state of charge of the traction battery pack (116), through the BMS (102).
8. The method (200) as claimed in claim 7, wherein the method of operation of the battery management module (102) comprising the steps of
configuring a processing module (102-P) for determining the various state parameters of the traction battery pack (102) measured through multiple sensors and in response to generate a traction battery pack (116) status report;
configuring a memory unit (102-M) for storing data related to the threshold limit of various state parameters of the traction battery pack (116); and
configuring a controlling module (102-C)for sending signals either to the first second contactor switch (124) or the second contactor switch (126) based on the data evaluated by the processing module (102-P) after comparison of determined state parameters of the traction battery pack (116) at a particular instant of time and their threshold limit.
9. The method (200) as claimed in claim 8, wherein the controlling module (102-C) of the BMS send signals to the first contactor switch (124) via bus (128) when the state of charge of the traction battery pack (116) equivalent to the defined threshold charge limit.
10.The method (200) as claimed in claim 9, wherein the traction battery pack (116) supplies power to the ECU (104) via wire harness after activation of the first contactor switch (124).
11. The method (200) as claimed in claim 10, wherein after activation of ECU (104), the controlling module (102-C) of the BMS (102) send signals to the ECU unit (104) via bus (114) for supplying power to the transmission unit (110) via power converter(106) and motor(108).
12.The method (200) as claimed in claim 8, wherein the controlling module (102-C) of the BMS (102) send signals to the second contactor switch (126) via bus (130) when the state of charge of the traction battery pack (116) less than the defined threshold charge limit.
13. The method (200) as claimed in claim 12, wherein the traction battery pack (116) is connected to the external charger (132) via second contactor switch (126) and wire harness, after activation of the second contactor switch (126).