Description:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

Title of invention:
AN ELECTRIC VEHICLE (EV) CHARGER SYSTEM AND METHOD THEREOF

Applicant:
ADOR POWERTRON LTD

A company incorporated in India,
Having address as:
Ador Warrior City Campus,
Plot No-51, D-2 Block, Ramnagar, MIDC, Chinchwad,
Pune - 411019, Maharashtra, India

The following specification describes the subject matter and the manner in which it is to be performed.
TECHNICAL FIELD
[001] The present subject matter described herein, in general, relates to an electric vehicle (EV) charger system and method thereof. More particularly, the present subject matter relates to an electric vehicle (EV) charger system and method thereof by dynamically distributing power.
BACKGROUND
[002] Currently DC fast chargers are used in electric vehicles (EVs) charging stations. The conventional standard chargers for electric vehicles (EVs) are of two types. The two types are an equal sharing charger and a First-in- First-out (FIFO) charger. The equal sharing charger as shown in figure 1a discloses the standard charger setup for 120kw for charging two electric vehicles with a total four power modules of 30kw, a total of two contactor set and a total of two charging guns. Each contactor set is dedicated to each charging guns and two power modules are dedicated to each charging guns. The conventional standard charger is used for charging two vehicles simultaneously. Further, each vehicle can charge utilizing two power modules only, even when there is no other vehicle connected to the second charging gun. Due to the conventional equal sharing setup as mentioned above, only two power modules are dedicated for each charging guns and the dedicated power modules are not shared with the other charging guns. The conventional equal sharing charger works at the maximum 50% total charging capacity when only one electric vehicle is connected for charging.
[003] The charger as shown in figure 1b discloses another conventional charger setup for 120kw for charging two electric vehicles with a total four power modules of 30kw, a total of three contactor set and a total of two charging guns. Two power modules are dedicated to each contactor sets and the two contactor sets are further connected to an additional contactor set. The additional contactor set is connected to both the charging guns. Thus, the power from all the four power modules are available to any one of the charging guns at a time. When one electric vehicle is connected to the conventional charger, the maximum (100%) charging capacity is available for charging the electric vehicle. Due to the conventional FIFO sharing setup as mentioned above, only one electric vehicle can charge at a given time even when the other charging gun is vacant. Further, only one charging gun is operable as it is connected to access all the power modules.
[004] Currently, the conventional equal sharing and FIFO based chargers lacks flexibility in charging multiple electrical vehicles simultaneously in an efficient manner. Also, the conventional chargers are preprogrammed to only work as either the equal sharing charger or the FIFO charger.
[005] Hence to overcome the aforesaid drawbacks an efficient electric vehicle charger system and method is required.
OBJECTS OF THE INVENTION
[006] Main object of the present disclosure is to provide an electric vehicle (EV) charger system and method thereof to provide maximum power of the chargers by dynamically distributing the power to connected Electrical Vehicles (EV).
[007] Another object of the present disclosure is to provide the electric vehicle (EV) charger system and method thereof to charge multiple Electrical Vehicles (EV) simultaneously.
[008] Yet another object of the present disclosure is to provide the electric vehicle (EV) charger system and method thereof to the optimal charge for fast charging using dynamic load balancing.
[009] Another object of the present disclosure is to provide the electric vehicle (EV) charger system and method thereof to operate the charger in two different modes as per the requirement such as equal sharing and first in first out (FIFO).
[0010] Yet another object of the present disclosure is to provide the electric vehicle (EV) charger system and method thereof to vary the number of power modules assigned for each charging guns.
[0011] Another object of the present disclosure is to provide the electric vehicle (EV) charger system and method thereof to improve the charging efficiency of the electric vehicle (EV) charger.
[0012] Another object of the present disclosure is to provide the electric vehicle (EV) charger system and method thereof which is simple, cost effective and easy to implement.
SUMMARY
[0013] Before the present system is described, it is to be understood that this application is not limited to the particular machine, device or system, as there can be multiple possible embodiments that are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to an electric vehicle (EV) charger system and method thereof, and the aspects are further elaborated below in the detailed description. This summary is not intended to identify essential features of the proposed subject matter nor is it intended for use in determining or limiting the scope of the proposed subject matter.
[0014] An Electric Vehicle (EV) charger system comprising a controller to balance a load of the Electric Vehicle (EV) charger. The controller dynamically balances the load of the Electric Vehicle (EV) charger based on a preselected charging mode. Plurality of power modules are provided to supply power for simultaneously charging an atleast one Electric Vehicle (EV). Plurality of contactor sets are coupled to the plurality of power modules. Plurality of charging guns charges the atleast one Electric Vehicle (EV). The plurality of charging guns are connected to a defined contactor set. A switching controller controls the switching of the plurality of power modules with the plurality of contactor sets based on the input signal received from the controller.
[0015] An Electric Vehicle (EV) charging method comprising charging an Electric Vehicle (EV) through atleast one charging gun from the plurality of charging guns provided in an Electric Vehicle (EV) charger. The Electric Vehicle (EV) is charged using a dynamic load balancing model. An atleast one contactor set is connected from the plurality of contactor sets to atleast one charging gun. Setting an atleast one power module as a preferred power module from the plurality of power modules for a particular charging gun. A preselected limit is set for the number of the preferred power modules for the particular charging gun. Assigning the said atleast one power module as a preferred power module for a particular charging gun based on a predetermined charging modes, and a predefined parameters. Switching atleast one power module between the plurality of charging guns for dynamically distributing power based on the input signal received from a controller. The output signal of the controller is based on a preselected charging modes, plurality of predefined parameters. Sharing atleast one preferred power module dynamically between the plurality of charging guns based on the input signal from the controller, the preselected charging modes, and the plurality of predefined parameters.
STATEMENT OF INVENTION
[0016] The present subject matter discloses an Electric Vehicle (EV) charger system comprising a controller to balance a load of the Electric Vehicle (EV) charger. The controller dynamically balances the load of the Electric Vehicle (EV) charger based on a preselected charging mode. Plurality of power modules are provided to supply power for simultaneously charging an atleast one Electric Vehicle (EV). Plurality of contactor sets are coupled to the plurality of power modules. Plurality of charging guns charges the atleast one Electric Vehicle (EV). The plurality of charging guns are connected to a defined contactor set. A switching controller controls the switching of the plurality of power modules with the plurality of contactor sets based on the input signal received from the controller.
[0017] In an embodiment, the controller is a dynamic load balancing (DLB) controller.
[0018] In an embodiment, the preselected charging mode is an equal sharing mode, and a first in first out (FIFO) mode.
[0019] In an embodiment, the plurality of predefined parameters are an atleast one of a priority level, an energy demand of plurality of vehicles and a charging capacity.
[0020] In an embodiment, the number of power modules assigned for a particular charging gun is varied based on the said atleast one of the preselected charging modes, the priority level, the energy demand of plurality of vehicles and the charging capacity.
[0021] In an embodiment, the minimum number of power module assigned to the plurality of charging guns are of variable number based on the said atleast one of the preselected charging modes, the priority level, the energy demand of plurality of vehicles and the charging capacity.
[0022] In an embodiment, the plurality of charging guns dynamically shares the number of power module between the plurality of charging guns based on the charging requirement from plurality of Electric Vehicle (EV) simultaneously by enabling no restriction on charging according to defined capacity of the charger.
[0023] In another embodiment, an Electric Vehicle (EV) charging method comprising charging an Electric Vehicle (EV) through atleast one charging gun from the plurality of charging guns provided in an Electric Vehicle (EV) charger. The Electric Vehicle (EV) is charged using a dynamic load balancing model. An atleast one contactor set is connected from the plurality of contactor sets to atleast one charging gun. Setting an atleast one power module as a preferred power module from the plurality of power modules for a particular charging gun. A preselected limit is set for the number of the preferred power modules for the particular charging gun. Assigning the said atleast one power module as a preferred power module for a particular charging gun based on a predetermined charging modes, and a predefined parameters. Switching atleast one power module between the plurality of charging guns for dynamically distributing power based on the input signal received from a controller. The output signal of the controller is based on a preselected charging modes, plurality of predefined parameters. Sharing atleast one preferred power module dynamically between the plurality of charging guns based on the input signal from the controller, the preselected charging modes, and the plurality of predefined parameters.
BRIEF DESCRIPTION OF DRAWING
[0024] The foregoing summary, as well as the following detailed description of embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the disclosure, there is shown in the present document example constructions of the disclosure, however, the disclosure is not limited to the specific methods and device disclosed in the document and the drawing. The detailed description is described with reference to the following accompanying figures.
[0025] Figure 1a illustrates a charging setup for an equal sharing charger (Prior Art), in accordance with an embodiment of the present subject matter.
[0026] Figure 1b illustrates the charging setup for another charger (Prior Art), in accordance with an embodiment of the present subject matter.
[0027] Figure 2 illustrates a fast charging schematic of an electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0028] Figure 3a illustrates a dynamic load balancing (DLB) setup connectivity with two charging guns of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0029] Figure 3b illustrates the dynamic load balancing (DLB) setup connectivity with four charging guns of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0030] Figure 4 illustrates plurality of power modules of an equal sharing DLB setup of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0031] Figure 5 illustrates the equal sharing DLB distribution of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0032] Figure 6 illustrates plurality of power modules of the FIFO DLB setup of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0033] Figure 7 illustrates the FIFO DLB distribution of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0034] Figure 8 illustrates an example of combined DLB distribution of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0035] Figure 9 illustrates the flowchart of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0036] Figure 10 illustrates another example of combined DLB distribution of the electric vehicle (EV) charger system, in accordance with an embodiment of the present subject matter.
[0037] The figures depict various embodiments of the present disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following discussion that alternative embodiments of the structures illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[0038] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words "comprising", “having”, and "including," and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Although any devices and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, devices and methods are now described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
[0039] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated, but is to be accorded the widest scope consistent with the principles and features described herein.
[0040] The present invention discloses an electric vehicle (EV) charger system to charge plurality electric vehicles simultaneously by dynamically balancing the load. Figure 2 shows a fast charging schematics (200) comprising a charging station (202) which includes plurality of power modules (204a, 204b, 204c, 204d, 204e, 204f, 204g, 204h), plurality of charging guns (206, 208) for charging plurality of Electric Vehicles (EV) (210, 212).
[0041] Now referring to figure 3a and figure 3b, figure 3a relates to a dynamic load balancing (DLB) setup (300a) connectivity with two charging guns and Figure 3b relates to the dynamic load balancing (DLB) setup (300b) connectivity with four charging guns. The EV charger system (300a, 300b) comprises a controller (330) to dynamically balance of the EV charger based on a preselected charging mode. Plurality of power modules (302a, 304a, 30a, 308a, 302b) are provided to supply power for simultaneously charging an atleast one Electric Vehicle (EV). Plurality of contactor sets (310a, 312a, 314a, 316a, 318a, 320a, 314b, 316b, 318b, 320b) are coupled to the plurality of power modules (302a, 304a, 30a, 308a, 302b). Plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) charges the atleast one Electric Vehicle (EV). The plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) are connected to a defined contactor set (318a, 320a, 314b, 316b, 318b, 320b). A switching controller (332) controls the switching of the plurality of power modules (302a, 304a, 30a, 308a, 302b) with the plurality of contactor sets (310a, 312a, 314a, 316a, 318a, 320a, 314b, 316b, 318b, 320b) based on the input signal received from the controller (330).
[0042] The preselected charging modes are an equal sharing mode (400, 500), and a first in first out (FIFO) mode (600, 700). The controller (330) is a dynamic dynamic load balancing (DLB) controller.
[0043] Now referring to figure 4 and figure 5, Figure 4 relates to plurality of power modules of an equal sharing DLB setup (400) and figure 5 relates to the equal sharing DLB distribution (500) of the electric vehicle (EV) charger system. Plurality of power modules of an equal sharing DLB setup (400) comprising plurality of power modules (402, 404). In an exemplary embodiment, the total number of power modules (402, 404) are eight of 30kw each. Both the charging guns (506, 508) are assigned with equal number of power modules (402, 404). The power modules (402, 502) are assigned to the charging gun A (506) and the power modules (404, 504) are assigned to the charging gun B (508). Further, the equal sharing DLB distribution (500) comprises two charging guns (A, B) (506, 508), eight power modules (502, 504). Step 1, indicates that the charger is in idle state. In step 2, the electrical vehicle A (210) is connected to the charging gun A (506) with a demand for 180KW. The equal sharing DLB assigns the four dedicated power modules (502) to the charging gun A (506). As the charging gun B (508) is not connected to another vehicle, two power modules of the charging gun B (508) are shared with the charging gun A (506). In step 3, the electrical vehicle B (212) is connected to the charging gun B (508) with a demand for 60KW are assigned with the remaining two power modules. In step 4, as the electrical vehicle B (212) increases its demand to 120KW, the controller commands the electrical vehicle A (210) to lower its demand as the charging gun B (508) are assigned with four dedicated power modules (504). In step 5, the electrical vehicle A (210) lowers its demand to 120KW and the charging gun B (508) has a demand of 120KW. Thus, the power modules (504) are assigned to the charging gun B (508).
[0044] Moreover, the equal sharing DLB (400, 500) shares the total charger capacity between the charging guns such as 50% of total charger capacity is always available to any vehicle if required. Also, when only one vehicle is connected it can go beyond 50% of total charger capacity.
[0045] Now referring to figure 6 and figure 7, figure 6 relates to plurality of power modules of an FIFO DLB setup (600) and figure 7 relates to the FIFO DLB distribution (700) of the electric vehicle (EV) charger system. In an exemplary embodiment, the plurality of power modules of an FIFO DLB setup (600) comprises eight power modules (600) bifurcated into two power modules (602) dedicated for the vehicle connected to charging gun A (708), two power modules (606) dedicated for the vehicle connected to charging gun B (710), four power modules (604) are firstly assigned to the vehicle with charging priority and the four power modules (604) are only assigned to a second vehicle if not assigned to the first vehicle. The two power modules (602, 606) can be shared with the other charging guns (708, 710) if required. The power modules (602, 606) are the minimum number of predefined power modules assigned to each charging guns (708, 710). In this embodiment, the total number of power modules (600) are eight of 30kw each. Further, the FIFO DLB distribution (700) comprises two charging guns (A, B) (708, 710), eight power modules (602, 604, 606). In Step 1, indicates that the charger is in idle state. In step 2, the electrical vehicle A (210) is connected to the charging gun A (708) with a demand for 210KW. The FIFO DLB assigns six power modules to the charging gun A (708) from the two dedicated power modules (702) of the charging gun A (708), the four sharable dedicated power modules (704) and shares one dedicated power module from the two dedicated power modules (706) of the charging gun B (710). In step 3, the electrical vehicle B (212) is connected to the charging gun B (710) with a demand for 60KW and as the two dedicated power modules (706) are dedicated to the charging gun B (710), the controller (330) commands the electrical vehicle A (210) to lower its demand to 180KW. Then, the electrical vehicle A (210) is assigned with the six power modules (702, 704) and the electrical vehicle B (212) is assigned with the two power modules (706). In step 4, the electrical vehicle B (212) increases its demand to 120KW and the charging priority is set to the electric vehicle A (210). The electrical vehicle B (212) can only charge with the dedicated two power modules (706) unless the electric vehicle A (210) starts demanding less. The controller (330) commands the electrical vehicle B (212) to reduce its demand back to 60KW. In step 5, the electrical vehicle B (212) lowers its demand to 60KW.
[0046] Moreover, the FIFO DLB (600, 700) ensures that the charging gun (708, 710) which has the electric vehicle connect to it first has the charging priority. Once the charging priority is set, the controller (330) assigns max number of the power modules to that specific charging gun with the charging priority. When the second electric vehicle is connected to the second charging gun, the controller (330) assigns the dedicated number of the power modules. More number of the power modules are assigned to the second charging gun if the first charging gun has lower demand.
[0047] Now referring to figure 8, figure 8 relates to an example of combined DLB distribution (800) of the electric vehicle (EV) charger. The example comprises the FIFO setup operated by the controller (330). The four power modules (802a, 802b, 802c, 802d) are assigned to the charging gun A (806) and the four power modules (802e, 802f, 802g, 802h) are assigned to the charging gun B (804). The example is explained below, the steps comprises :
Step 1- Charger is in idle condition.
Demand on charging GUN A = 0KW
Demand on charging GUN B = 0KW
Dedicated power modules for charging GUN A = 4
Dedicated power modules for charging GUN B = 4
Assigned power modules for charging GUN A = 0
Assigned power modules for charging GUN B = 0
Charging priority = None

Step 2- Charging
Demand on charging GUN A = 0KW
Demand on charging GUN B = 30KW
Dedicated power modules for charging GUN A = 7
Dedicated power modules for charging GUN B = 1
Assigned power modules for charging GUN A = 0
Assigned power modules for charging GUN B = 1
Charging priority = B

Step 3- Charging
Demand on charging GUN A = 0KW
Demand on charging GUN B = 240KW
Dedicated power modules for charging GUN A = 2
Dedicated power modules for charging GUN B = 6
Assigned power modules for charging GUN A = 0
Assigned power modules for charging GUN B = 6 + 2 (+2 since it is sharing from A)
Charging priority = B.

Step 4- Charging
Demand on charging GUN A = 30KW
Demand on charging GUN B = 240KW
Dedicated power modules for charging GUN A = 2 (refer to point #3 in Overview)
Dedicated power modules for charging GUN B = 6
Assigned power modules for charging GUN A = 0
Assigned power modules for charging GUN B = 6 + 2
Charging priority = B.

Step 5- Charging
Demand on charging GUN A = 30KW
Demand on charging GUN B = 210KW (controller commands vehicle to reduce the demand)
Dedicated power modules for charging GUN A = 2
Dedicated power modules for charging GUN B = 6
Assigned power modules for charging GUN A = 1
Assigned power modules for charging GUN B = 6 + 1
Charging priority = B

Step 6- Charging
Demand on charging GUN A = 120KW
Demand on charging GUN B = 210KW
Dedicated power modules for charging GUN A = 2
Dedicated power modules for charging GUN B = 6
Assigned power modules for charging GUN A = 1
Assigned power modules for charging GUN B = 6 + 1
Charging priority = B

Step 7- Charging
Demand on charging GUN A = 60KW (controller commands vehicle to reduce the demand)
Demand on charging GUN B = 180KW (controller commands vehicle to reduce the demand)
Dedicated power modules for charging GUN A = 2
Dedicated power modules for charging GUN B = 6
Assigned power modules for charging GUN A = 2
Assigned power modules for charging GUN B = 6
Charging priority = B

Step 8- Charging
Demand on charging GUN A = 60KW
Demand on charging GUN B = 120KW
Dedicated power modules for charging GUN A = 4
Dedicated power modules for charging GUN B = 4
Assigned power modules for charging GUN A = 2
Assigned power modules for charging GUN B = 4
Charging priority = B

Step 9- Charging
Demand on charging GUN A = 90KW
Demand on charging GUN B = 120KW
Dedicated power modules for charging GUN A = 4
Dedicated power modules for charging GUN B = 4
Assigned power modules for charging GUN A = 3
Assigned power modules for charging GUN B = 4
Charging priority = B

Step 10- Charging
Demand on charging GUN A = 90KW
Demand on charging GUN B = 0KW
Dedicated power modules for charging GUN A = 3
Dedicated power modules for charging GUN B = 5
Assigned power modules for charging GUN A = 3
Assigned power modules for charging GUN B = 0
Charging priority = A

[0048] Now referring to figure 10, figure 10 relates to another example of combined DLB distribution (1000) of the electric vehicle (EV) charger. The example comprises the equal sharing setup operated by the controller (330). The four power modules (1002a, 1002b, 1002c, 1002d) are assigned to the charging gun A (1006) and the four power modules (1002e, 1002f, 1002g, 1002h) are assigned to the charging gun B (1004). The example is explained below, the steps comprises :
Step 1- Charger is in idle condition.
Demand on GUN A = 0KW
Demand on GUN B = 0KW
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 0
Assigned modules for GUN B = 0

Step 2- Charging
Demand on GUN A = 0KW
Demand on GUN B = 30KW
Dedicated modules for GUN A = 7
Dedicated modules for GUN B = 1
Assigned modules for GUN A = 0
Assigned modules for GUN B = 1

Step 3- Charging
Demand on GUN A = 0KW
Demand on GUN B = 240KW
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 0
Assigned modules for GUN B = 4 + 4 (+4 since it is sharing from A)

Step 4- Charging
Demand on GUN A = 30KW
Demand on GUN B = 240KW
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 0
Assigned modules for GUN B = 4 + 4

Step 5- Charging
Demand on GUN A = 30KW
Demand on GUN B = 210KW (Algorithm commands vehicle to reduce the demand)
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 1
Assigned modules for GUN B = 4 + 3

Step 6- Charging
Demand on GUN A = 60KW
Demand on GUN B = 210KW
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 1
Assigned modules for GUN B = 4 + 3

Step 7- Charging
Demand on GUN A = 60KW
Demand on GUN B = 180KW (Algorithm commands vehicle to reduce the demand)
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 2
Assigned modules for GUN B = 4 + 2

Step 8- Charging
Demand on GUN A = 120KW
Demand on GUN B = 180KW
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 2
Assigned modules for GUN B = 4 + 2

Step 9- Charging
Demand on GUN A = 120KW
Demand on GUN B = 120KW (Algorithm commands vehicle to reduce the demand)
Dedicated modules for GUN A = 4
Dedicated modules for GUN B = 4
Assigned modules for GUN A = 4
Assigned modules for GUN B = 4
[0049] The minimum number of power modules assigned by the charging guns varies based on atleast one of the preselected charging modes, the priority level, the energy demand of plurality of vehicles and the charging capacity. Instead of having a dedicated number of power modules for each gun, the number will keep changing as charging process is ongoing. The plurality of charging guns dynamically shares the number of power module between the plurality of charging guns based on the charging requirement from plurality of Electric Vehicle (EV) simultaneously by enabling no restriction on charging according to defined capacity of the charger.
[0050] Referring to figure 9, an Electric Vehicle (EV) charging method (900) comprises charging an Electric Vehicle (EV) through atleast one charging gun from the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) provided in an Electric Vehicle (EV) charger in step 902. The Electric Vehicle (EV) is charged using a dynamic load balancing model. In step 904, an atleast one contactor set is connected from the plurality of contactor sets (310a, 312a, 314a, 316a, 318a, 320a, 314b, 316b, 318b, 320b) to atleast one charging gun (322a, 324a, 322b, 324b, 326b, 328b). In step 904, an atleast one power module (302a, 304a, 30a, 308a, 302b) is set as a preferred power module from the plurality of power modules (302a, 304a, 30a, 308a, 302b) for a particular charging gun (322a, 324a, 322b, 324b, 326b, 328b). A preselected limit is set for the number of the preferred power modules (302a, 304a, 30a, 308a, 302b) for the particular charging gun (322a, 324a, 322b, 324b, 326b, 328b). In step 906, the said atleast one power module is assigned as a preferred power module (302a, 304a, 30a, 308a, 302b) for a particular charging gun (322a, 324a, 322b, 324b, 326b, 328b) based on a predetermined charging modes, and a predefined parameters. In step 908, atleast one power module (302a, 304a, 30a, 308a, 302b) is switched between the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) for dynamically distributing power based on the input signal received from a controller. The output signal of the controller (330) is based on a preselected charging modes, plurality of predefined parameters. In step 910, atleast one preferred power module (302a, 304a, 30a, 308a, 302b) is shared dynamically between the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) based on the input signal from the controller, the preselected charging modes, and the plurality of predefined parameters.
[0051] Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features.
[0052] Some embodiments of the subject matter enable to provide the electric vehicle (EV) charger system and method thereof to provide maximum power of the chargers by dynamically distributing the power to connected Electrical Vehicles (EV).
[0053] Some embodiments of the subject matter enable to provide the electric vehicle (EV) charger system and method thereof to charge multiple Electrical Vehicles (EV) simultaneously.
[0054] Some embodiments of the subject matter enable to provide the electric vehicle (EV) charger system and method thereof to the optimal charge for fast charging using dynamic load balancing.
[0055] Some embodiments of the subject matter enable to provide the electric vehicle (EV) charger system and method thereof to operate the charger in two different modes as per the requirement such as equal sharing and first in first out (FIFO).
[0056] Some embodiments of the subject matter enable to provide the electric vehicle (EV) charger system and method thereof to vary the number of power modules assigned for each charging guns.
[0057] Some embodiments of the subject matter enable to provide the electric vehicle (EV) charger system and method thereof to improve the charging efficiency of the electric vehicle (EV) charger.
[0058] Some embodiments of the subject matter enable to provide the electric vehicle (EV) charger system and method thereof which is simple, cost effective and easy to implement.
Equivalents
[0059] With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
[0060] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."
[0061] Although implementations for the electric vehicle (EV) charger system and method thereof have been described in language specific to structural features and/or methods, it is to be understood that the appended claims are not necessarily limited to the specific features described. Rather, the specific features are disclosed as examples of implementation for the electric vehicle (EV) charger system and method thereof.
, C , C , Claims:

1. An Electric Vehicle (EV) charger system (300a, 300b), comprising:
a controller (330) configured to balance a load of the Electric Vehicle (EV) charger, wherein the controller (330) configured to dynamically balance the load of the Electric Vehicle (EV) charger based on a preselected charging mode;
plurality of power modules (302a, 304a, 30a, 308a, 302b) configured to provide power for simultaneously charging an atleast one Electric Vehicle (EV);
plurality of contactor sets (310a, 312a, 314a, 316a, 318a, 320a, 314b, 316b, 318b, 320b) configured to be coupled to the plurality of power modules (302a, 304a, 30a, 308a, 302b);
plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) configured to charge the atleast one Electric Vehicle (EV), wherein the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) configured to be connected to a defined contactor set (318a, 320a, 314b, 316b, 318b, 320b); and
a switching controller (332) configured to control the switching of the plurality of power modules (302a, 304a, 30a, 308a, 302b) with the plurality of contactor sets (310a, 312a, 314a, 316a, 318a, 320a, 314b, 316b, 318b, 320b) based on the input signal received from the controller (330).

2. The system (300a, 300b) as claimed in claim 1, wherein the controller (330) is configured to be a dynamic load balancing (DLB) controller.

3. The system (300a, 300b) as claimed in claim 1, wherein the preselected charging mode is configured to be an equal sharing mode, an first in first out (FIFO) mode.

4. An Electric Vehicle (EV) charging method (900), comprising:
charging, an Electric Vehicle (EV) through atleast one charging gun from the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) provided in an Electric Vehicle (EV) charger, wherein the Electric Vehicle (EV) is charged using a dynamic load balancing model;
connecting, an atleast one contactor set from the plurality of contactor sets (310a, 312a, 314a, 316a, 318a, 320a, 314b, 316b, 318b, 320b) to atleast one charging gun (322a, 324a, 322b, 324b, 326b, 328b);
setting, an atleast one power module (302a, 304a, 30a, 308a, 302b) as a preferred power module from the plurality of power modules (302a, 304a, 30a, 308a, 302b) for a particular charging gun (322a, 324a, 322b, 324b, 326b, 328b), wherein a preselected limit is set for the number of the preferred power modules (302a, 304a, 30a, 308a, 302b) for the particular charging gun (322a, 324a, 322b, 324b, 326b, 328b);
assigning, the said atleast one power module as a preferred power module (302a, 304a, 30a, 308a, 302b) for a particular charging gun (322a, 324a, 322b, 324b, 326b, 328b) based on a predetermined charging modes, and a predefined parameters;
switching, atleast one power module (302a, 304a, 30a, 308a, 302b) between the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) for dynamically distributing power based on the input signal received from a controller (330), wherein the output signal of the controller (330) is based on a preselected charging modes, plurality of predefined parameters; and
sharing, atleast one preferred power module (302a, 304a, 30a, 308a, 302b) dynamically between the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) based on the input signal from the controller (330), the preselected charging modes, and the plurality of predefined parameters.

5. The method (900) as claimed in claim 4, wherein the controller (330) is configured to be a dynamic load balancing (DLB) controller.

6. The method (900) as claimed in claim 4, wherein the preselected charging modes are configured to be an equal sharing mode, an first in first out (FIFO) mode.

7. The method (900) as claimed in claim 4, wherein the plurality of predefined parameters are configured to be an atleast one of a priority level, an energy demand of plurality of vehicles and a charging capacity.

8. The method (900) as claimed in claim 4, wherein the number of power modules (302a, 304a, 30a, 308a, 302b) assigned for a particular charging gun (322a, 324a, 322b, 324b, 326b, 328b) is configured to be varied based on the said atleast one of the preselected charging modes, the priority level, the energy demand of plurality of vehicles and the charging capacity.
9. The method (900) as claimed in claim 4, wherein the minimum number of power module (302a, 304a, 30a, 308a, 302b) assigned to the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) are configured to be of variable number based on the said atleast one of the preselected charging modes, the priority level, the energy demand of plurality of vehicles and the charging capacity.

10. The method (900) as claimed in claim 4, wherein the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) dynamically shares the number of power module (302a, 304a, 30a, 308a, 302b) between the plurality of charging guns (322a, 324a, 322b, 324b, 326b, 328b) based on the charging requirement from plurality of Electric Vehicle (EV) simultaneously by enabling no restriction on charging according to defined capacity of the charger.