Description:FIELD OF THE INVENTION
[001] The present invention relates to a charging system. Embodiments of the present invention relate to a system for charging a battery pack and a method thereof.

BACKGROUND OF THE INVENTION
[002] With the advancement in vehicle technologies, there is greater focus on enhancement of a battery performance, and on improving an overall charging experience. A charger is a device configured to charge a battery pack, which can be of a vehicle. The charger is configured to charge the battery pack by routing a charging current from a power source to the battery pack. A conventional charger is configured to charge the battery pack only from a stationary charging station. The stationary charging station extends the charger, thereby directly connecting onto a charging port of the vehicle. The vehicle has a control unit configured to establish a communication between a battery pack of the vehicle and the charging station to initiate and dissociate the battery pack from the charging accordingly. Therefore, the charging of the battery pack is allowed only through the stationary charging station. However, the stationary charging station is inefficient in charging the battery pack of the vehicle, as the charger of the charging station has to be connected to the vehicle at all times, which is undesirable.
[003] Conventionally, the charging of the vehicle is allowed only by connecting the charger to the vehicle at the stationary charging station, making it inconvenient for a user. Since there are no other means of charging the battery pack, it becomes difficult for the user to charge the battery pack only at the stationary charging station. Further, conventionally the battery pack is unable to be removed from the vehicle, and hence the user is not able to charge the battery pack as per their convenience, which makes the charging process tedious and laborious.
[004] Thus, there is a need in the art for a system and a method for charging a battery pack, which addresses at least the aforementioned problems.

SUMMARY OF THE INVENTION
[005] In one aspect, the present invention relates to a system for charging a battery pack. The system has a charger unit configured to be connected to the battery pack and a power source. The charger unit is adapted to provide a charging current to the battery pack. The system further has a control unit communicably coupled to the charger unit and the battery pack. The control unit is configured to determine one or more battery parameters of the battery pack. The control unit is further configured to determine the charging current corresponding to the one or more battery parameters of the battery pack. The control unit enables the charger unit for providing the charging current to the battery pack for charging.
[006] In an embodiment of the invention, the system has a Battery Management System (BMS) module configured to be connected to the battery pack. The BMS module is configured to receive a pre-defined set of parameters corresponding to the battery pack.
[007] In an embodiment of the invention, the pre-defined set of parameters being selected from a group comprising: a State of Charge (SOC) of the battery pack, a voltage of the battery pack, a current of the battery pack, a temperature of the battery pack and a fault of the battery pack.
[008] In an embodiment of the invention, the system has a remote server configured to be connected to the control unit. The remote server is configured to store a charging status and a charging cycle corresponding to the battery pack.
[009] In an embodiment of the invention, the system has a display unit configured to be connected to the control unit and the remote server. The display unit is further configured to display the charging status, the charging cycle and a connection status of the battery pack to the user.
[010] In an embodiment of the invention, the control unit is configured to detect a fault in the charging cycle and send an alert to the user corresponding to the detected fault.
[011] In an embodiment of the invention, the system has a charging control relay configured to be connected to the battery pack and the charger unit. The charging control relay is controlled by the control unit for providing a functional safety to the battery pack.
[012] In an embodiment of the invention, the system has a charging cradle configured to accommodate the battery pack for charging.
[013] In an embodiment of the invention, the control unit is configured to receive an authorization for charging the battery pack based on a successful authentication of the battery pack.
[014] In an embodiment of the invention, the control unit is configured to optimize a charging rate of the battery pack in at least one of a low charging rate mode, a normal charging rate mode and a high charging rate mode.
[015] In another aspect, the present invention relates to a method for charging a battery pack. The method has the step of determining, by a control unit, one or more battery parameters of the battery pack. The method further has the step of determining, by the control unit, the charging current corresponding to the one or more battery parameters of the battery pack. Lastly, the method has the step of enabling, by the control unit, a charger unit for providing the charging current to the battery pack for charging.
[016] In an embodiment of the invention, the method further has the step of receiving, by a Battery Management System (BMS) module, a pre-defined set of parameters corresponding to the battery pack.
[017] In an embodiment of the invention, the pre-defined set of parameters being selected from a group comprising: a State of Charge (SOC) of the battery pack, a voltage of the battery pack, a current of the battery pack, a temperature of the battery pack and a fault of the battery pack.
[018] In an embodiment of the invention, the method has the step of storing, by a remote server, a charging status and a charging cycle corresponding to the battery pack.
[019] In an embodiment of the invention, the method has the step of displaying, by a display unit, the charging status, the charging cycle and a connection status of the battery pack to the user.
[020] In an embodiment of the invention, the method has the step of detecting, by the control unit, a fault in the charging cycle and sending an alert to the user corresponding to the detected fault.
[021] In an embodiment of the invention, the method has the step of providing, by a charging control relay, a functional safety to the battery pack, wherein the charging control relay is configured to be controlled by the control unit.
[022] In an embodiment of the invention, the method has the step of accommodating, by a charging cradle, the battery pack for charging.
[023] In an embodiment of the invention, the method has the step of receiving, by the control unit, an authorization for charging the battery pack based on a successful authentication of the battery pack.
[024] In an embodiment of the invention, the control unit is configured to optimize a charging rate of the battery pack in at least one of a low charging rate mode, a normal charging rate mode and a high charging rate mode.

BRIEF DESCRIPTION OF THE DRAWINGS
[025] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Figure 1 illustrates a block diagram for a system for charging a battery pack, in accordance with an embodiment of the present invention.
Figure 2 illustrates a block diagram for the system for charging the battery pack, in accordance with an embodiment of the present invention.
Figure 3 illustrates a block diagram for a charging rate optimization, in accordance with an exemplary embodiment of the present invention.
Figure 4 illustrates a flow diagram for a method for charging the battery pack, in accordance with an embodiment of the present invention.
Figure 5 illustrates a flow diagram for the method for charging the battery pack, in accordance with an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION
[026] The present invention generally relates to a charging system. More particularly, the present invention relates to a system for charging a battery pack and a method thereof. As disclosed herein, the present invention provides the system and the method for charging the battery pack either at a residential place or at a public place by a user. The present invention provides the system and the method, wherein the battery pack is configured to be removed from the vehicle for charging the battery pack at the residential place of the user or as per the convenience of the user in the public place. Therefore, as disclosed herein, the battery pack is configured to be removed from the vehicle for charging the battery pack by the user. Further, once the charging process has completed, the user is able to place back the battery pack in the vehicle, thereby enabling the usage of the vehicle efficiently and effectively.
[027] Figure 1 illustrates a block diagram for the system 100 for charging the battery pack 102, in accordance with an embodiment of the present invention. Figure 2 illustrates a block diagram for the system 100 for charging the battery pack 102, in accordance with an embodiment of the present invention. The present invention provides the system 100 for charging the battery pack 102. As disclosed herein, the battery pack 102 comprises one or more batteries connected together in a series connection, a parallel connection or a series-parallel connection as per requirement. In an embodiment, the vehicle is a two-wheeled vehicle, a three-wheeled vehicle, a four-wheeled vehicle and a multi-wheeled vehicle. In yet another embodiment, the vehicle is an electric vehicle or a hybrid vehicle. In an embodiment, the battery pack 102 is configured to be disposed in the vehicle. The battery pack 102 is configured to provide the desired power output for the functioning of the vehicle. In an embodiment, the battery pack 102 is disposed on a frame member (not shown) of the vehicle.
[028] In a non-limiting embodiment, the system 100 includes a Battery Management System (BMS) module 108. The BMS module 108 is configured to be connected to the battery pack 102. The BMS module 108 is configured to receive a pre-defined set of parameters corresponding to the battery pack 102. In a further non-limiting embodiment, the pre-defined set of parameters being selected from a group comprising: a State of Charge (SOC) of the battery pack 102, a voltage of the battery pack 102, a current of the battery pack 102, a temperature of the battery pack 102 and a fault of the battery pack 102.
[029] In an embodiment, the system 100 includes a charging cradle 116. The charging cradle 116 is configured to accommodate the battery pack 102 for charging. The charging cradle 116 is a device configured to charge the battery pack 102 securely and safely. The charging cradle 116 is configured to hold the battery pack 102 securely while the battery pack 102 is charging, thereby allowing the multiple battery packs 102 to be charged at once. Hence, the present invention provides a reliable and efficient system for the charging of the battery pack 102.
[030] The system 100 further comprises a charger unit 104. The charger unit 104 is connectable to the battery pack 102 and to a power source. The charger unit 104 upon electrically connecting the charger unit 104 to the power source and the battery pack 102, is adapted to supply or provide a charging current to the battery pack 102 from the power source. In an embodiment, the charger unit 104 comprises one or more electrical components that are configured to convert or modulate the power received from the power source for charging the battery pack 102. In an embodiment, the one or more electrical components are configured to convert Alternating Current (AC) power (or current) from the power source and convert it into Direct Current (DC) power. In an embodiment, the charger unit 104 is capable of being connected to a DC charging power point. The DC power is then delivered to the battery pack 102 of the vehicle.
[031] In an embodiment, the charger unit 104 is adapted to provide a charging current to the battery pack 102 based on the one or more battery parameters of the battery pack 102. More specifically, the charging process is not carried out indiscriminately. Rather, the charger unit 104 is configured to consider the one or more battery parameters of the battery pack 102. Hence, the charging current provided to the battery pack 102 is adjusted based on the specific power requirements of the battery pack at a given time.
[032] The system 100 comprises a control unit 106 that is communicably coupled to the charger unit 104 and the battery pack 102. As disclosed herein, the control unit 106 is a master unit configured for controlling and monitoring the charging of battery pack 102 when the battery pack 102 is kept in the charging cradle 116 and the charger unit 104 is powered ON. In an embodiment, the control unit 106 is connected to the charging unit 104 and the battery pack 102 wirelessly. In an embodiment, the control unit 106 is operatively connected to the one or more electrical components in the charger unit 104. The control unit 106 is configured to charge the battery pack 102 of the vehicle with the help of the charger unit 104. In an embodiment, the control unit 106 is configured to detect the battery pack 102 kept on the charging cradle 116.
[033] In an embodiment of the present invention, the control unit 106 is a Vehicle Control Unit (VCU) 106 and is adapted to determine one or more operating parameters of the vehicle. In an embodiment, the one or more operating parameters of the vehicle include but not limited to a speed of the vehicle, a brake actuation, a throttle actuation, parameters pertaining to the battery pack 102 and the like. One or more sensors (not shown) are installed on the vehicle and are configured to procure information pertaining to each of the one or more operating parameters and parameters pertaining to the battery pack 102. In an embodiment, the one or more sensors comprises but is not limited to a battery monitoring sensor, a vehicle speed sensor, and the like.
[034] As disclosed herein, the control unit 106 is configured to determine the one or more battery parameters of the battery pack 102. Also, the control unit 106 is configured to determine the charging current corresponding to the one or more battery parameters of the battery pack 102. In an embodiment, the one or more battery parameters include but are not limited to a voltage of the battery, a battery capacity, a charging current, a discharging current, and the like. Once the charging current is determined, the control unit 106 is configured to enable the charger unit 104 by operating one or more electrical components for providing the charging current to the battery pack 102 for charging. Therefore, the present invention is configured to charge the battery pack 102 of the vehicle with the help of the charger unit 104.
[035] In a non-limiting embodiment, the control unit 106 is configured to detect the battery pack 102 of the vehicle. Once the battery pack 102 is detected, the control unit 106 enables a relay between the charger unit 104 and the battery pack 102 for the charging of the battery pack 102. For charging the battery pack 102, the control unit 106 is configured to establish a connection between the battery pack 102 and the corresponding BMS module 108. The control unit 106 determines the one or more parameters of the battery pack 102 such as the SOC, voltage, charging current, discharging current, and the like for controlling the charging of the battery pack 102 through the charger unit 104.
[036] In an embodiment, the system 100 includes a remote server 110. The remote server 110 is configured to be connected to the control unit 106. The remote server 110 is configured to store a charging status and a charging cycle corresponding to the battery pack 102. In an embodiment, the control unit 106 is configured to display the one or more battery parameters to the user through the remote server 110. The remote server 110 is configured to be connected to a user device, thereby displaying the charging status to the user at all times during the charging process. Thus, the present invention provides a communication to the user at all times with the help of the remote server 110 and the control unit 106.
[037] The system 100 further has a display unit 112. The display unit 112 is configured to be connected to the control unit 106 and the remote server 110. The display unit 112 is further configured to display the charging status, the charging cycle and a connection status of the battery pack 102 to the user. In a non-limiting embodiment, the control unit 106 is configured to store the charging current and the one or more battery parameters of the battery pack 102.
[038] The system 100 includes a charging control relay 114. The charging control relay 114 is configured to be connected to the battery pack 102 and the charger unit 104. The charging control relay 114 is controlled by the control unit 106 for providing a functional safety to the battery pack 102. The charging control relay 114 is configured to secure the battery pack 102 during the charging process, thereby preventing the life and durability of the battery pack 102.
[039] In an embodiment, the control unit 106 is configured to receive an authorization for charging the battery pack 102 based on a successful authentication of the battery pack 102. As disclosed herein, the control unit 106 enables the charger unit 104 to charge the battery pack 102 only based on the successful authentication of the battery pack 102 by the control unit 106.
[040] In a non-limiting embodiment, the control unit 106 is configured to detect a fault in the charging cycle and send an alert to the user corresponding to the detected fault.
[041] In an example embodiment, the battery pack 102 is source of an electrical power for operating the vehicle. The battery pack 102 is configured to be charged and discharged. For example, the battery pack 102 of the vehicle is discharged and needs to be charged. The battery pack 102 is removed from the vehicle and placed on the charging cradle 116 for charging. The application of the user device is configured to display the charging data of the battery pack 102 when the charger unit 104 is ON and the battery pack 102 is placed on the charging cradle 116. Now, the control unit 106 is configured for establishing a communication with the user device for authenticating the charging of the battery pack 102. For instance, in the event the battery pack is inserted into the charging cradle, the unique identifier (UID) of the battery is captured and transmitted to the user device through the remote server. The user device has a default UID registered and stored internally. When the user gets a charging cradle for the battery pack, the UID of the battery pack is mapped to the charging cradle accordingly. The user is then authorized to charge the battery pack. Once the charging process is initiated by the user, the user device compares the stored UID against the received UID and thereon seeks authentication from the user. Once authentication is received, the charging operation is initiated by engaging the charging control relay 114. The charger unit 104 provides the charging voltage and the charging current to the battery pack 102 based on the input demand from the control unit 106.
[042] Accordingly, the remote server 110 is an azure cloud system for receiving the charging data from the control unit 106. The remote server 110 sends the data to the user device, thereby allowing the user to access the charging data at all times. The absence of direct communication between the control unit 106 and the user device enhances the safety facets of the present invention by reducing the potentiality of hacking into the communication channel. Additionally, an embedded communication channel is used for enhancing the overall security and safety of the system.
[043] Once the authentication of the battery pack 102 is successfully completed, the control of the charging time and accordingly the charging rate is provided by the user. Hence, the charging rate is automatically optimized to improve the battery life cycle. In an example, if the authorization is not received by the control unit 106, the charging control relay is not triggered, thereby preventing the safety and security of the battery pack and the charger unit accordingly.
[044] Figure 3 illustrates a block diagram 200 for a charging rate optimization, in accordance with an exemplary embodiment of the present invention. In an embodiment, the control unit 106 is configured to optimize a charging rate of the battery pack 102 in at least one of a low charging rate mode, a normal charging rate mode and a high charging rate mode. As disclosed herein, the low charging rate mode refers to a charging mode, wherein the rate of charging takes place at a reduced rate. In a non-limiting embodiment, in the low charging rate mode, the charging process takes place at 1C i.e. at 5A for charging the battery pack 102 by the charger unit 104. As disclosed herein, the normal charging rate mode refers to a charging mode, wherein the rate of charging takes place at a normal rate. In a non-limiting embodiment, in the normal charging rate mode, the charging process takes place at 2C i.e. at 10A for charging the battery pack 102 by the charger unit 104. As disclosed herein, the high charging rate mode refers to a charging mode, wherein the rate of charging takes place at a higher rate. In a non-limiting embodiment, in the high charging rate mode, the charging process takes place at 3C i.e. at 15A for charging the battery pack 102 by the charger unit 104. In an embodiment, the control unit 106 is configured to automatically optimize the charging rate for improving the life cycle of the battery pack 102. The user device is configured to control the charging operation based on the SOC of the battery pack 102 and the time input from the user. For example, the charging speed may be categorized into: a) Low charging speed: In the low charging speed, the charging speed is approximately 60% of the maximum current and voltage of the charger unit 104. b) Medium charging speed: In the medium charging speed, the charging speed is approximately 80% of the maximum current and voltage of the charger unit 104. c) High charging speed: In the high charging speed, the charging speed is equivalent to the maximum current and voltage that the charger unit 104 can deliver. Therefore, the control unit 106 is configured to optimize the charging rate by receiving the configurable charging time i.e., low, medium and high charging speed by the user and then, automatically optimizing the charging rate for improving the life cycle of the battery pack 102.
[045] Figure 4 illustrates a flow diagram for a method 300 for charging the battery pack 102, in accordance with an embodiment of the present invention. The steps involved in the method 300 for charging the battery pack 102 of the vehicle are illustrated in Figure 4. As illustrated at step 302, a control unit 106 is configured to determine one or more battery parameters of the battery pack 102. As disclosed herein, the battery pack 102 comprises one or more batteries connected together in a series connection, a parallel connection or a series-parallel connection as per requirement. In an embodiment, the battery pack 102 is configured to be disposed in the vehicle. The battery pack 102 is configured to provide the desired power output for the functioning of the vehicle. In an embodiment, the battery pack 102 is disposed on a frame member (not shown) of the vehicle.
[046] In a non-limiting embodiment, a Battery Management System (BMS) module 108 is provided. The BMS module 108 is configured to be connected to the battery pack 102. The BMS module 108 is configured to receive a pre-defined set of parameters corresponding to the battery pack 102. In a further non-limiting embodiment, the pre-defined set of parameters being selected from a group comprising: a State of Charge (SOC) of the battery pack 102, a voltage of the battery pack 102, a current of the battery pack 102, a temperature of the battery pack 102 and a fault of the battery pack 102.
[047] In an embodiment, a charging cradle 116 is provided. The charging cradle 116 is configured to accommodate the battery pack 102 for charging. The charging cradle 116 is a device configured to charge the battery pack 102 securely and safely. The charging cradle 116 is configured to hold the battery pack 102 securely while the battery pack 102 is charging, allowing the multiple battery packs 102 to be charged at once, thereby providing a reliable and efficient method for the charging of the battery pack 102.
[048] At step 304, the control unit 106 is configured to determine the charging current corresponding to the one or more parameters of the battery pack 102. In an embodiment, a charger unit 104 is provided. The charger unit 104 is connectable to the battery pack 102 and to a power source. The charger unit 104 upon electrically connecting the charger unit 104 to the power source and the battery pack 102, is adapted to supply or provide a charging current to the battery pack 102 from the power source. In an embodiment, the charger unit 104 comprises one or more electrical components that are configured to convert or modulate the power received from the power source for charging the battery pack 102. In an embodiment, the one or more electrical components are configured to convert Alternating Current (AC) power (or current) from the power source and convert it into Direct Current (DC) power. In an embodiment, the charger unit 104 is capable of being connected to a DC charging power point. The DC power is then delivered to the battery pack 102 of the vehicle.
[049] At step 306, the control unit 106 enables the charger unit 104 to provide the charging current to the battery pack 102 based on the one or more battery parameters of the battery pack 102 for charging. More specifically, the charging process is not carried out indiscriminately. Rather, the charger unit 104 is configured to consider the one or more battery parameters of the battery pack 102. Hence, the charging current provided to the battery pack 102 is adjusted based on the specific power requirements of the battery pack at the given time.
[050] In an embodiment, the control unit 106 is communicably coupled to the charger unit 104 and the battery pack 102. As disclosed herein, the control unit 106 is a master unit configured for controlling and monitoring the charging of battery pack 102 when the battery pack 102 is kept in the charging cradle 116 and the charger unit 104 is powered ON. In an embodiment, the control unit 106 is connected to the charging unit 104 and the battery pack 102 wirelessly. In an embodiment, the control unit 106 is operatively connected to the one or more electrical components in the charger unit 104. The control unit 106 is configured to charge the battery pack 102 of the vehicle with the help of the charger unit 104. In an embodiment, the control unit 106 is configured to detect the battery pack 102 kept on the charging cradle 116. In an embodiment of the present invention, the control unit 106 is a Vehicle Control Unit (VCU) 106 and is adapted to determine one or more operating parameters of the vehicle. In an embodiment, the one or more operating parameters of the vehicle include but not limited to a speed of the vehicle, a brake actuation, a throttle actuation, parameters pertaining to the battery pack 102 and the like. One or more sensors (not shown) are installed on the vehicle and are configured to procure information pertaining to each of the one or more operating parameters and parameters pertaining to the battery pack 102. In an embodiment, the one or more sensors comprises but is not limited to a battery monitoring sensor, a vehicle speed sensor, and the like.
[051] As disclosed herein, the control unit 106 is configured to determine the one or more battery parameters of the battery pack 102. Also, the control unit 106 is configured to determine the charging current corresponding to the one or more battery parameters of the battery pack 102. In an embodiment, the one or more battery parameters include but are not limited to a voltage of the battery, a battery capacity, a charging current, a discharging current, and the like. Once the charging current is determined, the control unit 106 is configured to enable the charger unit 104 by operating one or more electrical components for providing the charging current to the battery pack 102 for charging. Therefore, the present invention is configured to charge the battery pack 102 of the vehicle with the help of the charger unit 104.
[052] In a non-limiting embodiment, the control unit 106 is configured to detect the battery pack 102 of the vehicle. Once the battery pack 102 is detected, the control unit 106 enables a relay between the charger unit 104 to the battery pack 102 for the charging of the battery pack 102. For charging the battery pack 102, the control unit 106 is configured to establish a connection between the battery pack 102 and the corresponding BMS module 108. The control unit 106 determines the one or more parameters of the battery pack 102 such as the SOC, voltage, charging current, discharging current, and the like for controlling the charging of the battery pack 102 through the charger unit 104.
[053] In an embodiment, the control unit 106 is configured to be connected to a remote server 110. The remote server 110 is configured to store a charging status and a charging cycle corresponding to the battery pack 102. In an embodiment, the control unit 106 is configured to display the one or more battery parameters to the user via the display unit 112. The remote server 110 is configured to be connected to a user device, thereby displaying the charging status to the user at all times during the charging process. The display unit 112 is configured to be connected to the control unit 106 and the remote server 110. The display unit 112 is further configured to display the charging status, the charging cycle and a connection status of the battery pack 102 to the user. In a non-limiting embodiment, the control unit 106 is configured to store the charging current and the one or more battery parameters of the battery pack 102.
[054] In an embodiment, a charging control relay 114 is configured to be connected to the battery pack 102 and the charger unit 104. The charging control relay 114 is controlled by the control unit 106 for providing a functional safety to the battery pack 102. In an embodiment, the control unit 106 is configured to receive an authorization for charging the battery pack 102 based on a successful authentication of the battery pack 102. As disclosed herein, the control unit 106 enables the charger unit 104 to charge the battery pack 102 only based on the successful authentication of the battery pack 102 by the control unit 106. In a non-limiting embodiment, the control unit 106 is configured to detect a fault in the charging cycle and send an alert to the user corresponding to the detected fault.
[055] In an embodiment, the control unit 106 is configured to optimize a charging rate of the battery pack 102 in at least one of a low charging rate mode, a normal charging rate mode and a high charging rate mode. As disclosed herein, the low charging mode refers to a charging mode, wherein the rate of charging takes place at a reduced rate. In a non-limiting embodiment, in the low charging rate mode, the charging process takes place at 1C i.e. at 5A for charging the battery pack 102 by the charger unit 104. As disclosed herein, the normal charging rate mode refers to a charging mode, wherein the rate of charging takes place at a normal rate. In a non-limiting embodiment, in the normal charging rate mode, the charging process takes place at 2C i.e. at 10A for charging the battery pack 102 by the charger unit 104. As disclosed herein, the high charging rate mode refers to a charging mode, wherein the rate of charging takes place at a higher rate. In a non-limiting embodiment, in the high charging rate mode, the charging process takes place at 3C i.e. at 15A for charging the battery pack 102 by the charger unit 104.
[056] Figure 5 illustrates a flow diagram for the method 400 for charging the battery pack 102, in accordance with an exemplary embodiment of the present invention. As illustrated in Figure 5, the method 400 is shown for charging the battery pack 102. The method starts at step 402. In an embodiment, the charger unit 104 and the control unit 106 are turned ON. Simultaneously, the charging control relay 114 is turned OFF. In an embodiment, the charging of the battery pack 102 takes place outside the vehicle, thereby allowing the flexibility to the user for charging the battery pack 102 as per their convenience.
[057] At step 404, the battery pack 102 is placed on the charging cradle 116 and the battery pack 102 is detected by the control unit 106. In an embodiment, the battery pack 102 is charged in the charging cradle 116 which is provided in the residential places and other public places as well. The charging cradle 116 allows the user to charge the battery pack 102 outside the vehicle. Therefore, the present invention allows one battery pack 102 to be charged in the charging cradle 116 while the other battery pack 102 in the vehicle is configured to operate the vehicle at reduced speed.
[058] At step 406, the control unit 106 is configured to check the fault from either the charger unit 104 or the battery pack 102. If there are no faults detected, then a unique identifier (UID) of the battery pack 102 is added to the remote server 110. The UID corresponding to the battery pack 102 is accordingly stored in the remote server 110. In an embodiment, the present invention allows the authorization of the battery pack 102 before starting the charging process. The remote server 110 has the prestored information with respect to the battery pack 102. When the battery pack 102 is placed on the charging cradle 116, the control unit 106 is configured to send the UID of the battery pack 102 to the remote server 110. The control unit 106 is further configured to match the UID of the battery pack 102 with the prestored UID of the battery pack 102. If both the UIDs of the battery pack 102 match, the control unit 106 is configured to authenticate the battery pack 102 for charging. However, if both the UIDs of the battery pack 102 do not match, then the control unit 106 is configured to send the alert to the user. In such a scenario, the user authenticates and approves the battery pack through the user device for starting the charging of the battery pack 102. In an embodiment, the control unit 106 is configured to send the status regarding the authentication of the battery pack 102 to the user via the user device.
[059] At step 408, the control unit 106 is configured to demand the charging current required by the battery pack 102. The control unit 106 further enables the charger unit 104 to provide the charging current for charging the battery pack 102. In an embodiment, the control unit 106 is configured to determine the charging current required by the battery pack 102 based on the one or more parameters of the battery pack 102. In an embodiment, the control unit 106 is configured to control the charging process of the battery pack 102. The control unit 106 is configured to read the charging current required for the battery pack 102 from the BMS module 108 and demands the charger unit 104 to provide the demand voltage and demand current for the charging.
[060] At step 410, the control unit 106 is configured to display, through the display unit 112, the predefined set of parameters corresponding to the battery pack 102 to the user. The display unit 112 is also configured to display the alerts to the user in the form of a buzzer or a light indication (LED) in case a fault is detected by the control unit 106. In an embodiment, the control unit 106 is configured to display the complete charging data from the remote server 110 to the user through the entire charging process of the battery pack 102. The control unit 106 is further configured to monitor the alerts and faults raised from the charger unit 104 and the battery pack 102 and notifies the user about the fault detected during the charging of battery pack 102.
[061] At step 412, the control unit 106 is configured to control and monitor the charging of the battery pack 102 till the battery pack 102 is fully charged. The status of the battery pack 102 during the charging process is shown to the user as well. In an embodiment, the control unit 106 is configured to display the data related to the battery pack 102 from the BMS module 108 to the user. The data corresponds to the charging process, indication of the charging state, the SoC indication, the estimated time of charging, the battery pack connection status and the battery pack mounting status on the charging cradle 116.
[062] At step 414, the control unit 106 is configured to turn OFF the charger unit 104 and the charging control relay 114 once the charging process has completed. In an embodiment, the charging control relay 114 is controlled by the control unit 106 for functional safety. The charging control relay 114 is configured to be connected between the battery pack 102 and the charger unit 104. In a non-limiting embodiment, if a single battery pack 102 is kept on the charging cradle 116 for charging and the other slot of the charging cradle is vacant, then the control unit 106 is configured to turn OFF the charging control relay 114 for the vacant slot of the charging cradle. This systematic approach not only facilitates efficient charging but also safeguards against potential faults or manipulation of charging parameters, thereby enhancing the overall security and reliability of the battery pack charging system and method.
[063] Advantageously, the present invention provides a system and a method for charging a battery pack of a vehicle outside the vehicle with the help of a charging cradle. Hence, the present invention is efficient and reliable as compared to the existing systems. The present invention provides the charging cradle for efficiently charging the battery pack of the vehicle. The charging cradle is configured to charge at different charging rate to meet the charging requirements and the needs of the user, thereby improving the overall life of the battery pack. Therefore, the present invention eliminates the issue of inconvenience of charging the battery pack inside the vehicle and is cost-efficient as well.
[064] The present invention provides an efficient and economical solution to charge the battery pack of the vehicle in three different charging rates, including a low charging rate mode, a medium charging rate mode and a high charging rate mode which can supply different output powers based on a user demand, and therefore, eliminates the need of replacing the battery pack frequently. The present invention is efficient and durable compared to the conventional system and method.
[065] Further, the present invention prevents an unauthorized access by providing an authentication process of the battery pack based on the prestored information of the battery pack and the input received from the user. The charger unit enables the user to charge the battery pack based on the one or more battery parameters of the battery pack. Thus, the present invention improves the overall durability of the charger unit and the battery pack.
[066] Hence, the present invention provides an efficient and economical solution to charge the battery pack of the vehicle in three modes. Additionally, the present invention provides for the system and the method which is configured to charge the battery pack either from the residential place or can be additionally deployed in public charging station as well, thereby enhancing the convenience of the user for charging the battery pack remotely. The present invention further provides the ease of comprehension of charging data of the battery pack. The present invention further provides the remote data monitoring of the battery pack status including faults and the detection of the charging status. The present invention helps the user to view the entire charging process through a user device, thereby making the present invention efficient and reliable. The present invention maintains a communication channel between the user device, the remote server and the control unit, thereby enhancing the overall safety security of the battery pack and the charger unit during the charging process.
[067] In light of the abovementioned advantages and the technical advancements provided by the disclosed system and method, the claimed steps as discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the following solutions to the existing problems in conventional technologies. Further, the claimed steps clearly bring an improvement in the functioning of the system itself as the claimed steps provide a technical solution to a technical problem.
[068] Furthermore, one or more computer-readable storage media may be utilized in implementing embodiments consistent with the present disclosure. A computer-readable storage medium refers to any type of physical memory on which information or data readable by a processor may be stored. Thus, a computer-readable storage medium may store instructions for execution by one or more processors, including instructions for causing the processor(s) to perform steps or stages consistent with the embodiments described herein. The term “computer-readable storage medium” should be understood to include tangible items and exclude carrier waves and transient signals, i.e., be non-transitory. Examples include random access memory (RAM), read-only memory (ROM), volatile memory, non-volatile memory, hard drives, CD ROMs, DVDs, flash drives, disks, and any other known physical storage media.
[069] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modification may be made without departing from the scope of the invention as defined in the following claims.

List of Reference Numerals
100: System for Charging a Battery Pack
102: Battery Pack
104: Charger Unit
106: Control Unit
108: Battery Management System Module
110: Remote Server
112: Display Unit
114: Charging Control Relay
116: Charging Cradle
200: Method for Charging a Battery Pack
, Claims:1. A system (100) for charging a battery pack (102), the system (100) comprising:
a charger unit (104) being connected to the battery pack (102) and a power source, the charger unit (104) being adapted to provide a charging current to the battery pack (102); and
a control unit (106) communicably coupled to the charger unit (104) and the battery pack (102), the control unit (106) being configured to:
determine one or more battery parameters of the battery pack (102);
determine the charging current corresponding to the one or more battery parameters of the battery pack (102);
enable the charger unit (104) for providing the charging current to the battery pack (102) for charging.

2. The system (100) as claimed in claim 1, comprising a Battery Management System (BMS) module (108), the BMS module (108) being configured to be connected to the battery pack (102), the BMS module (108) being configured to receive a pre-defined set of parameters corresponding to the battery pack (102).

3. The system (100) as claimed in claim 2, wherein the pre-defined set of parameters being selected from a group comprising: a State of Charge (SOC) of the battery pack (102), a voltage of the battery pack (102), a current of the battery pack (102), a temperature of the battery pack (102) and a fault of the battery pack (102).

4. The system (100) as claimed in claim 1, comprising a remote server (110), the remote server (110) being configured to be connected to the control unit (106), the remote server (110) being configured to store a charging status and a charging cycle corresponding to the battery pack (102).

5. The system (100) as claimed in claim 4, comprising a display unit (112), the display unit (112) being configured to be connected to the control unit (106) and the remote server (110), the display unit (112) being further configured to display the charging status, the charging cycle and a connection status of the battery pack (102) to the user.

6. The system (100) as claimed in claim 4, wherein the control unit (106) being configured to detect a fault in the charging cycle and send an alert to the user corresponding to the detected fault.

7. The system (100) as claimed in claim 1, comprising a charging control relay (114), the charging control relay (114) being configured to be connected to the battery pack (102) and the charger unit (104), the charging control relay (114) being controlled by the control unit (106) for providing a functional safety to the battery pack (102).

8. The system (100) as claimed in claim 1, comprising a charging cradle (116), the charging cradle (116) being configured to accommodate the battery pack (102) for charging.

9. The system (100) as claimed in claim 1, wherein the control unit (106) being configured to receive an authorization for charging the battery pack (102) based on a successful authentication of the battery pack (102).

10. The system (100) as claimed in claim 1, wherein the control unit (106) being configured to optimize a charging rate of the battery pack (102) in at least one of a low charging rate mode, a normal charging rate mode and a high charging rate mode.

11. A method (200) for charging a battery pack (102), the method (200) comprising:
determining, by a control unit (106), one or more battery parameters of the battery pack (102);
determining, by the control unit (106), the charging current corresponding to the one or more battery parameters of the battery pack (102); and
enabling, by the control unit (106), a charger unit (104) for providing the charging current to the battery pack (102) for charging.

12. The method (200) as claimed in claim 11, wherein the method (200) comprising the step of:
receiving, by a Battery Management System (BMS) module (108), a pre-defined set of parameters corresponding to the battery pack (102).

13. The method (200) as claimed in claim 12, wherein the pre-defined set of parameters being selected from a group comprising: a State of Charge (SOC) of the battery pack (102), a voltage of the battery pack (102), a current of the battery pack (102), a temperature of the battery pack (102) and a fault of the battery pack (102).

14. The method (200) as claimed in claim 11, wherein the method (200) comprising the step of:
storing, by a remote server (110), a charging status and a charging cycle corresponding to the battery pack (102).

15. The method (200) as claimed in claim 14, wherein the method (200) comprising the step of:
displaying, by a display unit (112), the charging status, the charging cycle and a connection status of the battery pack (102) to the user.

16. The method (200) as claimed in claim 14, wherein the method (200) comprising the step of:
detecting, by the control unit (106), a fault in the charging cycle and sending an alert to the user corresponding to the detected fault.

17. The method (200) as claimed in claim 11, wherein the method (200) comprising the step of:
providing, by a charging control relay (114), a functional safety to the battery pack (102), wherein the charging control relay (114) being configured to be controlled by the control unit (106).

18. The method (200) as claimed in claim 11, wherein the method (200) comprising the step of:
accommodating, by a charging cradle (116), the battery pack (102) for charging.

19. The method (200) as claimed in claim 11, wherein the method (200) comprising the step of:
receiving, by the control unit (106), an authorization for charging the battery pack (102) based on a successful authentication of the battery pack (102).

20. The method (200) as claimed in claim 11, wherein the control unit (106) being configured to optimize a charging rate of the battery pack (102) in at least one of a low charging rate mode, a normal charging rate mode and a high charging rate mode.