Electric vehicle charging connector unlocking via biometric input

Abstract

The present disclosure relates to an electric vehicle charging connector unlocking via biometric input. An electric vehicle (EV) charging system includes a receptacle located on an EV and a controller. The controller can be configured to, in response to a removal request and an inconsistency between a stored biometric record and first biometric data received from a first biometric sensor, compare the stored biometric record to second biometric data received from a second biometric sensor, and in response to a match of the comparison, generate an unlock request, wherein the second biometric sensor is different from the first biometric sensor.

Description

Technical Field

[0001] This disclosure relates to a charging cable and plug for an electric vehicle charging station and a corresponding charging socket on an electric vehicle (EV), and more specifically to a system and method for preventing unauthorized disconnection of the charging connector from the charging port on the EV. Background Technology

[0002] Many electric vehicles (EVs) include traction batteries for storing electrical energy to power the vehicle's propulsion and electric systems. Typically, EVs are configured to capture energy from vehicle systems such as regenerative braking systems. Some EVs (such as battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs)) include sockets configured to receive an electrical plug from which charge can be supplied to the EV to charge the battery via the power grid. Summary of the Invention

[0003] An electric vehicle (EV) charging system includes a socket and a controller, the socket being located on the EV. The controller is configured to: in response to a removal request and an inconsistency between a stored biometric record and first biometric data received from a first biometric sensor, compare the stored biometric record with second biometric data received from a second biometric sensor, and in response to a match in the comparison, generate an unlock request, wherein the second biometric sensor is different from the first biometric sensor.

[0004] A method for unlocking an electric vehicle plug executed by a controller includes: in response to a disconnection request, comparing biometric data received from a first biometric sensor with a stored biometric record; in response to a discrepancy in the comparison, comparing another biometric data received from a second biometric sensor with the stored biometric record; and in response to a match in the comparison of the other biometric data, unlocking the electric vehicle plug, wherein the second biometric sensor is different from the first biometric sensor.

[0005] A charging station for an electric vehicle (EV) includes a plug and a controller. The plug has a first biometric sensor and is configured to engage with the EV. The controller is configured to: activate a locking mechanism in response to detecting engagement of the plug with the EV; deactivate the locking mechanism in response to a removal request and a match between biometric data received from the first biometric sensor and a stored biometric record; and activate a second biometric sensor, different from the first biometric sensor, in response to a mismatch in the comparison.

[0006] According to one embodiment of the present invention, the stored biometric record includes data recorded from a first biometric sensor when the plug is engaged with a socket on an electric vehicle.

[0007] According to one embodiment of the present invention, the first biometric sensor includes a fingerprint reader and a palm print reader.

[0008] According to one embodiment of the present invention, the first biometric sensor includes a switch mounted on a plug.

[0009] According to one embodiment of the present invention, the palm print reader is located on the handle portion of the plug housing.

[0010] According to one embodiment of the present invention, the biometric record includes at least one of thumbprint, fingerprint, palm print, retinal image, facial image, voice signature, and codeword voice signature. Attached Figure Description

[0011] Figure 1 This is a schematic diagram illustrating an electric vehicle (EV) with a charging port and multiple optional biometric sensors located on the EV, as well as an EV charging system.

[0012] Figure 2 This is a schematic diagram showing the side of the EV's charging port and plug.

[0013] Figure 3 This is a schematic diagram showing a hand holding an electrical plug.

[0014] Figure 4 This is a schematic diagram showing a charging socket for EVs.

[0015] Figure 5 This is a schematic diagram showing the biometric sensor near the charging port and the optional locations for the biometric sensor on the vehicle.

[0016] Figure 6 This is a flowchart of a biometric unlocking mechanism used in electric vehicle charging systems.

[0017] Figure 7 This is a flowchart of a biometric unlocking mechanism used in electric vehicle charging systems. Detailed Implementation

[0018] Specific embodiments of the invention are disclosed herein as needed; however, it should be understood that the disclosed embodiments are merely examples of the invention and may be implemented in various alternative forms. The drawings are not necessarily drawn to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to utilize the invention in various forms.

[0019] Electric vehicles (EVs) (whether implemented as plug-in electric vehicles (PHEVs) or battery electric vehicles (BEVs)) typically include locking devices on the EV charging socket (plug-in port, socket, etc.), the EV SE charging cable (cable, wiring, etc.) connector (plug, jack, etc.), or a combination of socket and connector, to attempt to prevent accidental disconnection of the cable from the EV. Since vehicle charging cables are often expensive items, charging cable theft is also a problem in certain PHEV and BEV markets. Furthermore, electricity theft can occur at EVSE charging stations when an authorized user leaves the EV unattended and an unauthorized person attempts to charge their EV using electricity owned by the authorized user, electricity paid for by the authorized user, or electricity from a source typically controlled by the authorized user. Some regions have adopted standards for locking charging cable connectors to the EV to prevent unauthorized disconnection (i.e., detachment of the connector from the EV) and potential theft of the charging cable from the EVSE or unauthorized use of the charging cable to charge another EV (i.e., electricity theft).

[0020] EV manufacturers typically include mechanical (such as padlocks) or electromechanical devices that allow the EVSE connector to be locked to and unlocked from the EV. However, padlocks can be easily removed or broken using tools such as wire cutters and lock picks, allowing the EVSE charging cable to be disconnected or stolen. Padlocks are also inconvenient for users (e.g., customers, drivers, owners, lessees, or other authorized persons) to lock and unlock, especially in low light or inclement weather conditions.

[0021] Electromechanical devices typically require a strategy for unlocking. One strategy used is to unlock the cable whenever the EV door is unlocked. Such a strategy can cause an unexpected interruption of EV charging when a user intends to access the EV.

[0022] Other traditional electromechanical strategies have also been implemented. However, these strategies may be inconvenient because users typically need to perform additional steps (e.g., an extra press / push on the electronic remote key button) to remove the EVSE charging cable. Another traditional strategy for electromechanical devices uses key input recognition when a button is pressed on the keypad of the EV, charging cable connector, or EVSE charging station. Such strategies usually require additional hardware related to EV and software complexity. Keypad / remote key button strategies can also be inconvenient for users, especially when the charging cable connector unlock button is located inside the EV cabin. Some EV manufacturers have included a dedicated cable connector unlock button on the remote key, which may be more convenient for users, but typically adds significant cost and complexity for EV manufacturers.

[0023] As described above, conventional techniques for preventing unauthorized disconnection of the EVSE connector from an authorized user's vehicle (such as mechanical locks actuated by a physical key, electronic remote key signals, etc.) can be inconvenient and cumbersome for authorized users. Therefore, a robust and convenient system and method are needed and desired for preventing unauthorized detachment of the EVSE connector from the charging port on the EV. This disclosure relates to embodiments of a system and method for securing a charging connector on an Electric Vehicle Power Supply Equipment (EVSE) subsystem to a socket on an electric vehicle (EV) via biometric input. As detailed below and illustrated in the accompanying drawings, the embodiments generally provide improved technical effects related to securing a charging connector on an EVSE subsystem to a socket on an EV by reducing or preventing unauthorized detachment of the connector from the socket.

[0024] Users are typically authorized persons who possess at least one of biometric characteristics (e.g., thumbprint / fingerprint, palm print, retinal image, facial image, voice, speech-word, and codeword) and are aware of one or more unique alphanumeric character codes previously approved for identification and operation of System 100. Thumbprint / fingerprint can be collectively referred to as fingerprint. Furthermore, as those skilled in the art will understand, biometric input devices may include, but are not limited to, any biometric sensor / scanner / reader / input device (e.g., thumbprint / fingerprint / palmprint scanner, pressure-sensitive pad, capacitive sensor matrix pad, facial recognition scanner, retinal image scanner, microphone, speech recognition, and codeword sensors, etc.) that implements operational and control processing using a suitable programmable controller (e.g., controller 152). As used throughout this document, the term input device is applied to a means that can be implemented to perform input functions, and those skilled in the art will understand such use in consideration of the context of the described embodiments and configurations.

[0025] Those skilled in the art will understand the input, approval, authentication, storage, retrieval, etc., of such biometric characteristics and unique access codes in systems such as system 100 described herein and shown in the accompanying drawings. As detailed below and shown in the accompanying drawings, the embodiments generally provide improved technical effects related to securing the charging connector on the electric vehicle power supply equipment (EVSE) subsystem to the socket on the EV by reducing or preventing unauthorized detachment of the connector from the socket.

[0026] One or more biometric input devices 114 (e.g., biometric device 174, second biometric device 162, and third biometric device 176) can be used to identify specific authorized users (e.g., customers, drivers, vehicle owners, operators, chauffeured drivers, lessees, or other authorized persons) and can be used to provide unlocking of cable connector 148 (e.g., release, disconnection, etc.). Biometric input devices 114, 174, 162, and 176 can use, but are not limited to, techniques or methods such as thumbprint / fingerprint scanning, palmprint scanning, retinal recognition, iris recognition, facial recognition, speech recognition, voice-to-word and code-to-word recognition, vein pattern recognition, ear shape recognition, etc.

[0027] Multiple user biometric profiles (e.g., records, files, data, etc.) can be saved (uploaded, stored, etc.) to and retrieved from the memory (e.g., downloaded, read, etc.) for comparison with biometric information provided to obtain authorization for unlocking connector 144. The memory can be located individually or in combination in any module of EV 102 (e.g., VCU 130 or charger 126), charging station 142 (e.g., memory 154), remote database, etc. In one example, a database of biometric information for charging an EV is disclosed by reference to U.S. Publication 2012 / 0268247, published October 25, 2012, which is fully incorporated herein by reference.

[0028] As described below with reference to the accompanying drawings, biometric devices 114, 174, 162, and 176 may be mounted (positioned, placed, set, secured, fastened, etc.) on an electric vehicle (EV) 102 or a cable set connector 144. Such biometric devices can be used to identify a specific user and allow (e.g., authorization, permission, readiness, activation, etc.) the unlocking of connector 144 from charging port 120 on EV 102, and thus the unlocking of cable 148.

[0029] In addition to reducing or preventing the theft of expensive charging cables 148 and plugs 144 or power from charging station 142, the embodiments can also reduce the overall system cost and component complexity of EV102 by eliminating complex remote key (i.e., adding a dedicated connector unlock button) and / or vehicle-specific connector unlock button as can be implemented in conventional ways.

[0030] Embodiments of this disclosure can also simplify and speed up the operation (i.e., processing, procedure, activity, etc.) of separating the charging cable 144 from the EV102 by eliminating (i.e., deletion, removal, elimination, etc.) the conventional technical requirement of requiring the user to perform secondary button presses (inputs) via a remote key or keyboard.

[0031] With regard to any granted patents and published patent applications (if any) included herein by reference, those skilled in the art will understand that such references are included only to the extent that they are examples of the types of technology that can be implemented in accordance with the references, and are not intended as limitations or constraints on the embodiments of this disclosure.

[0032] Reference Figure 1The diagram illustrates an EVSE connector locking system 100, an electric vehicle (EV) 102 (shown in dashed lines for clarity of other components), and an electric vehicle power supply (EVSE) subsystem 142, according to one or more embodiments. System 100 includes a system (e.g., a socket locking system) and associated methods for securing the EVSE charging connector 144 to a socket 120 on the EV 102 via biometric input. Figure 1 Exemplary embodiments of components, their associations, and locations are illustrated. As those skilled in the art will understand, alternative components, associations, locations, and features may be implemented within the scope of embodiments of this disclosure.

[0033] EVSE systems (such as EVSE 142) typically include a power subsystem (e.g., charging station 142) that is electrically connected (e.g., coupled) to a mains power grid and a computer-controlled charger (e.g., a power source) (i.e., a power source 148 electrically connected to a conductive cable (i.e., conductor, wiring, etc.) (i.e., cable 148 terminated via a connector (i.e., plug, jack, etc.) (i.e., plug 144)). Connector 144 is configured to detachably and matingly coupled (e.g., connected, inserted, hooked, embedded, engaged, mated, etc.) to a socket (e.g., port, charging port, input, jack, fixture, etc.) on EV 102 (i.e., charging port 120) such that the energy storage device 128 can be recharged via the power station 142 through an onboard charger 126 (e.g., an AC-to-DC charger). Optionally, the AC-to-DC charger 126 may reside in EVSE 152 (e.g., a DC fast charging (DCFC) system). Cable 148 may include electrical conductors to provide bidirectional electrical communication between charger controller 152, connector 144, and EV 102. Additionally or optionally, some or all of the communication between charger controller 152, connector 144, and EV 102 may be wirelessly implemented via a device (such as a remote key, cellular phone, smartphone, etc.). Wireless connectivity may be implemented using industry-standard wireless networks (such as Bluetooth, Wi-Fi, or cellular networks), or a proprietary network may be used.

[0034] The electric vehicle (EV) 102 can be implemented as a battery electric vehicle (BEV) or a plug-in hybrid electric vehicle (PHEV). The exterior of the EV 102 includes a user door handle 134 and a biometric input 114. The door handle 134 typically provides the user with access to the interior of the EV 102 (e.g., the passenger compartment). The door handle 134 may be configured with a biometric sensor, enabling the identification of the person grasping the door handle 134 when it is grasped. The panel door 112 is typically implemented as a closed body panel opening 110 (the closed position of the panel door is not shown for clarity).

[0035] EV 102 may also include at least one instance of a biometric input device 114, a charging socket 120, an electrical storage device (e.g., a battery) 128, and a vehicle control unit (VCU) 130. While the electrical storage device 128 can be implemented as any suitable electrical storage device or medium (e.g., one or more batteries, battery cells, battery packs, supercapacitors, etc.), the term "battery 128" is used generally here for convenience; however, such use is not a limitation on the energy storage devices that may be implemented in the embodiments. Furthermore, since control may be distributed among multiple modules or may reside in different modules (e.g., on-board charger 126), not all embodiments of system 100 necessarily require the implementation of VCU 130.

[0036] Furthermore, as those skilled in the art will understand, battery 128 is typically electrically coupled (connected) to one or more electric motors to provide traction propulsion to EV 102 and other electrically driven devices (not shown for clarity). Similarly, as those skilled in the art will understand, in some embodiments implementing vehicle control unit (VCU) 130, EV 102 is typically implemented as a vehicle control unit (VCU) 130 that is electrically interconnected (e.g., electrically coupled) to all of the biometric input device 114, second biometric input device 162, third biometric input device 176, socket 120, and battery 128.

[0037] Input device 114 is typically accessible and operable by a user from outside the EV 102. Input device 114 may be implemented as a biometric input device (e.g., sensor, reader, scanner, microphone, pressure plate, capacitive sensor matrix, etc.) that acquires (e.g., acquires, reads, scans, etc.) biometric information from the user under the control of a controller (e.g., 126 or 130). In one or more embodiments, biometric input device 114 may be positioned (e.g., mounted, positioned, etc.) on an outer surface of the EV 102 and close to the body panel opening 110 (i.e., near, adjacent to, close to, or within easily accessible range of the body panel opening 110, as understood by those skilled in the art) to provide the user with easy (e.g., ready, unobstructed, direct, etc.) access to input device 114 during the recharging process. The biometric input device 114 can be positioned at a distance of less than 0.5 m (and more often less than 0.25 m) from the vehicle body panel opening 110. Electrical communication typically involves the communication and transfer of signals and electricity, and may include multiple instances of wiring in cables (e.g., a bundle of wiring with multiple branches).

[0038] While some instances of the body panel opening 110, panel door 112, and input device 114 are shown placed in the left rear region of the EV 102, the embodiments are not limited to placing the first input device 114 only in this location. In other embodiments (such as...), Figure 5 In the embodiment shown, the biometric input device 114 may be placed on the EV 102 and close to the socket 120, on the door panel near the front quarter panel or user door handle 134, on the "B" pillar, or integrated into the door handle 134. The biometric input device 114 may be positioned at a distance of less than 0.25 m (and more often less than 0.1 m (i.e., 10 cm) from the socket 120 or user door handle 134.

[0039] The charging socket 120 is typically positioned (e.g., mounted, positioned, etc.) within the EV 102 and inside the body panel opening 110 (i.e., below the outer surface of the EV 102). When the panel door 112 is in the open position, the charging socket 120 is typically accessible to the user from the outside of the EV 102. As follows regarding... Figure 2 The dimensions and shape of the socket 120 discussed may be configured to mechanically and electrically engage (e.g., mating, connection, etc.) with the plug 144.

[0040] Biometric input device 114 typically communicates electrically (i.e., is electrically connected) to charging port 120 via an electrical interconnect cable. Biometric input device 114 typically communicates electrically (i.e., is electrically connected) to VCU 130 via a first electrical interconnect cable. Charging socket 120 communicates electrically (i.e., is electrically connected) to VCU 130 via the first electrical interconnect cable. VCU 130 also communicates electrically with battery 128 via a first cable. Socket 120 may be directly electrically connected to battery 128 via the first electrical interconnect cable. In other alternative embodiments (not shown), socket 120 may be electrically connected to battery 128 via a charging input module, which may be configured to perform filtering, buffering, etc.

[0041] The EVSE 142 includes a power source 150, a charging station 142, a charging connector 144, and an electrical interconnect cable (i.e., a charging cable) 148. The charging station 142 communicates electrically (i.e., is electrically connected) to the charging connector 144 via the cable 148. Specifically, the cable 148 is terminated by the connector 144. As will be understood by those skilled in the art, the charging station 142 typically also communicates electrically (i.e., is electrically connected) to a power source (such as a power grid, solar cell array, wind turbine array, etc.) (not shown for clarity). In one embodiment, the EVSE requires the operator to provide the cable 148 and the connector 144 (e.g., some embodiments of L1 charging). Furthermore, in some embodiments, the charging station 142 may be a stationary charger (AC or DCFC) or a portable charger cable 148. The portable charger cable 148 incorporates the functionality of the charging station 142, and in some embodiments, the charging station 142 is partially implemented in both the portable charger cable 148 and a module of the vehicle 102 (e.g., charger 126).

[0042] Charging station 142 includes a power supply 150 and a controller 152, which includes (i.e., typically electrically coupled directly internally to) a memory 154. The controller 152, electrically connected to the memory 154, is typically configured to control the operation of the locking system 100 via a computer program (e.g., executable instructions) and instructions from a user. Charging station 142 may also include a biometric sensor / keyboard 178, which can be used to unlock connector 144 from EVSE 142 to allow connector 144 to engage with vehicle 102. When connector 144 is engaged with vehicle 102, communication can be made via cable 148 or via a wireless connection.

[0043] As will be understood by those skilled in the art, the controller 152 (e.g., processor) disclosed herein typically includes one or more of the following: a programmable (e.g., programmed) computer processing unit (i.e., CPU, microprocessor, etc.); a memory 154, which may be volatile memory (e.g., RAM, SRAM, etc.) or non-volatile memory (e.g., ROM, flash memory, etc.), or may be any physical product including a separate memory device, and may include partitions in which stored data, information, programs, records, files, etc., are non-transitory (persistent) or transient (non-persistent); analog and digital input and output (i.e., interface, I / O, etc.) devices; firmware; logic circuitry; and software (i.e., program). The electrical and electronic devices including the controller 152 and the memory 154 typically communicate electrically with each other (e.g., via wired electrical connection or optionally wireless electrical connection) and with peripheral devices and equipment (e.g., sensors, actuators, I / O devices, etc.) outside the processor (e.g., via wired electrical connection or optionally wireless electrical connection). Controller 152 typically performs operations (e.g., methods, routines, steps, processes, controls, etc.) based on instructions provided in a program (e.g., a program for control, executable instructions, etc.) and instructions manually provided by the user. Operations performed by controller 152 and associated devices, components, subcomponents, parts, etc., can be shown and described in the form of text, flowcharts, graphics (e.g., diagrams, drawings, etc.), tables, etc., and any combination thereof. Controller 152 can be implemented as a standalone unit, or optionally, as distributed subcomponents. As will be readily understood by those skilled in the art, the configuration of controller 152 and associated devices is typically selected (picked, acquired, changed, modified, etc.) according to design criteria suitable for a particular implementation.

[0044] As those skilled in the art will understand, VCU 130 may be implemented similarly to controller 152. VCU 130 may include additional components and functions that provide control, monitoring, sensor input and actuator output processing, communication, etc., in relation to additional components, components, sub-components, etc., implemented in EV 102. Some of the control aspects of the controller may be shared or assigned to controllers in vehicle 102 (e.g., charger 126, VCU 130, or other control systems in the vehicle) or to controllers remote from EVSE 142 (e.g., remote server, remote controller). For example, EVSE 142 may be connected to a remote controller (e.g., remote server, cellular phone, tablet, etc.) via a wireless connection.

[0045] Reference Figure 2The diagram shows a left-side view of the charging port 120 in the body panel opening 110 on the EV 102 according to one or more embodiments, and a schematic diagram of the left side of the electrical plug 144. The connector 144 generally includes a housing 160, a cable 148, a latch arm 166, a finger / thumb button / biometric sensor (reader) input device 174, a connector handle biometric sensor device (i.e., a second input device) 162, and an optional biometric sensor 176 on the handle 178 of the plug 144.

[0046] Housing 160 also includes a connector handle assembly (i.e., the second input device) 162 and a nose section 164, and is generally configured to: mechanically define and position the connector handle assembly (i.e., the second input device) 162 and the nose section 164; and mechanically retain and position the latch arm 166 and the finger / thumb button / biometric sensor (reader) input device 174. The rear of housing 160 provides a mechanical interface between connector 144 and cable 148 (i.e., charging connector to charging station). Typically, sensors (e.g., 114, 162, 174, and 176) are coupled to controller 152 via wires in cable 148.

[0047] In addition to providing a biometric sensor (e.g., a fingerprint / palmprint reader), the handle portion 178 of the housing 160 typically also provides a handle area for the user to grasp and manipulate the plug 144. For example, a second biometric sensor 162 may be integrated with or fixed to the handle area 178 of the housing 160 of the connector 144. The front protrusion 164 includes connector terminals (not shown for clarity), and the front protrusion 164 is sized and shaped to mechanically and electrically engage with the charging port 120. The latch arm 166 is sized and shaped to mechanically engage with the charging port 120 and lock the connector 144 to the receptacle 120. Some details of the mechanical and electrical engagement between the receptacle 120 and the plug 144, and the latch, can be implemented similarly to the EV connector-to-receptacle mechanism shown and described, for example, in U.S. Patent No. 8,075,329, issued December 13, 2011, which is incorporated herein by reference in its entirety. Similarly, in another embodiment, the mechanical and electrical engagement between the socket 120 and the plug 144, as well as some details of the latching, can be implemented similarly to the EV connector-to-socket mechanism shown and described, for example, in U.S. Patent No. 8,932,072, issued January 13, 2015, which is also fully incorporated herein by reference. As those skilled in the art will understand, although the latching mechanism between the charging connector 144 and the EV 102 is shown as a hook-shaped shank locking onto the latch arm 166 of the socket 120, in alternative embodiments (not shown), the latching mechanism between the charging connector 144 and the EV 102 can be implemented with any other physical securing locking mechanism controlled via the controller 152. In other embodiments, the latch arm 166 or latching mechanism may reside on the vehicle 102 and may be configured to secure the front protrusion 164 of the plug 144.

[0048] The second biometric input device (e.g., a fingerprint / palmprint reader / sensor) 162 is generally positioned (e.g., integrated into) the rear or handle portion of the connector housing 160 to provide robust sensing input as well as convenient finger and hand manipulation access for the user.

[0049] The third input device 176 is positioned on top of the housing 160 to provide the user with convenient access to thumb or finger manipulation for providing open access to voice or images. The third input device 176 may be a biometric fingerprint reader, microphone, camera, or combination switch / sensor. Furthermore, embodiments of the third input device 176 may be implemented as a combination of a keypad and a biometric sensor / reader device. The third biometric input device 176 may be implemented as including, for example, U.S. Patent No. 9,352,652, issued May 31, 2016, which is wholly incorporated herein by reference (and specifically in...). Figure 4 The biometric sensor device's buttons / buttons are shown and described in column 6, line 61 to column 7, line 9. As those skilled in the art will understand, the third input device 176 can be implemented with any suitable biometric sensor / reader device. This input device can also be a microphone configured to convert sound waves into electrical signals. The electrical signals can be processed to generate a voice signature of the recorded sound. For example, a Fourier transform can be used to process the electrical signals to convert the time-domain signal into a frequency-domain signal and energy at a specific frequency. Based on this, the output can be compared with pre-stored data, and if the difference is within a certain tolerance, the controller will indicate a match. If the comparison has a difference larger than the certain tolerance, the controller will indicate a mismatch. Furthermore, to improve accuracy, the use of codeword-based voice signatures can enhance the reliability of the match. Retinal eye scanning or facial recognition can also be used.

[0050] Input devices 114, 162, 174, and 176 are typically electrically coupled to controller 152 via conductors or via wireless connections. Additionally, input devices 114, 162, 174, and 176 may be electrically coupled to other controllers (e.g., 126 and 130) in vehicle 102 or to modules of vehicle 102.

[0051] Using different biometric input devices allows for authentication to be provided in different configurations and in different ways. For example, in one embodiment, one of biometric input devices 114, 162, 174, or 176 is the primary device, and the different biometric input devices 114, 162, 174, or 176 are secondary devices. Here, the primary input device can be used to provide authentication, and if authentication fails, the user will need to provide input via a secondary input device. For example, if a thumbprint / fingerprint reader is the primary input device, if that input fails, the user will need to provide authentication via a secondary input device (e.g., palm print or voice signature). In some embodiments, after a first failure, matching data from both the primary and secondary input devices will be required, while in other embodiments, after a failure, only data from the secondary input device will be required. In another embodiment, if a second authentication using data from the secondary input device fails, matching data from a third input device will be required. Similar to the use of secondary input devices, matching data from the third input device may be required. In addition, authentication or override can be performed using in-vehicle systems (e.g., infotainment systems, instrument clusters, steering wheel control buttons, driver information consoles, or other vehicle modules with human-machine interfaces) or via a remote connection to an authentication server (e.g., an original equipment manufacturer (OEM) server) along with multi-layered matching biometric data.

[0052] Thus, those skilled in the art will understand that although controller 152 may be described as controlling system 100 in response to programs and / or data stored in a non-transitory partition of memory 154, programs and / or data stored in a temporary partition of memory 154, and instructions received from the user, since system 100 is an interconnected system, signals, data, information, instructions, etc., related to the operation and control of system 100 can be shared or transmitted via conductors or wirelessly between any of the controllers (e.g., 126, 130, or 152) and associated components (e.g., input devices 114, 162, 174, or 176). For example, electrical communication for monitoring and control can be implemented via communication mechanisms known in the art (e.g., Local Interconnect Network (LIN), Controller Area Network (CAN), Ethernet, etc.).

[0053] Reference Figure 3 The diagram illustrates an embodiment of a power plug 144 connected to the EV 102 in the charging port 120 and typically held by the user. The power plug 144 includes a biometric button device 174, an optional biometric device 176, and a handle biometric sensor 178.

[0054] Reference Figure 4 A schematic diagram illustrating an embodiment of a first input device (e.g., a biometric sensor) 114 is shown. According to one or more embodiments, the input device 114 is shown mounted on the EV 102 and near a receptacle 120. A panel door is shown in the open position. The panel door in the open position provides access to the biometric sensor 114 and a latch mechanism 175 through a body panel opening 110. The panel door in the closed position provides protection for the biometric sensor 114 and the receptacle 120. The biometric sensor 114 may also include a display to show the battery's state of charge or to show a design pattern or number that can be associated with codes used with the biometric sensor readings.

[0055] Reference Figure 5A schematic diagram illustrating an embodiment of a biometric device (e.g., an input device) 114 is shown. According to one or more embodiments, the biometric device 114 is shown mounted next to (i.e., near, adjacent to, close to, or adjacent to) the charging port 120, below the outer surface of the EV 102, and behind the panel door when the panel door is in the closed position (not shown). For clarity, the panel door is shown in the open position, providing the user with access to the socket 120 and the biometric sensor 114 through the body panel opening 110. Furthermore, the biometric device 114 is included at multiple locations (or optional locations) on the body panel of the EV 102 and near the charging port 120, on the door panel of the EV 102 and near the door handle 134, on the body panel of the EV 102 and near the door handle 134, and integrated into the door handle 134. Connector 144 is shown as being inserted (e.g., coupled to) EV 102.

[0056] Common Reference Figures 1 to 5 The receptacle 120 is configured to matingly receive the connector 144. Typically, the user inserts the front protrusion 164 of the connector 144 into the receptacle 120, and under the control of the controller 152, this typically results in the connector 144 being locked into the receptacle 120 via a latch arm 166 or by some other securing mechanism (e.g., a threaded lock, an actuated quick-disconnect fitting, etc.). Inserting the connector 144 into the receptacle 120 typically provides electrical communication between the EV 102 and all associated electrical devices and appliances (including the VCU 130 and the charging station 142 (e.g., the controller 152)), and completes direct electrical communication throughout the system 100. Additionally, as those skilled in the art will understand, regardless of the electromechanical connection between the receptacle 120 and the connector 144, the EV 102 and associated electrical components, as well as the EVSE 142, can also wirelessly communicate with each other and with user-operated devices (such as electronic remote keys, remote controls, cellular phones, smartphones, etc.).

[0057] Figure 6This is a flowchart illustrating a biometric unlocking method 300 for preventing unauthorized disconnection between an electrical plug 144 and a charging port 120 on an electric vehicle 102, according to one or more embodiments. The biometric unlocking method 300 generally includes steps (e.g., frames, operations, etc.) 305, 310, 320, 325, 330, 340, 350, 360, 370, 372, 374, 376, and 378 typically performed by a controller (e.g., controllers 126, 152, 130, etc.) via software (programs) stored in a non-transitory manner in a memory (e.g., memory 154). In some embodiments, the memory may be in an on-board module (e.g., 126 and 130). However, some steps of method 300 may be performed based on information (e.g., data, records, etc.) stored in and retrieved from a temporary partition of memory 154. In addition, some steps of method 300 can be performed based on information (e.g., data, records, etc.) and instructions obtained from the user.

[0058] According to one or more of the described embodiments, the locking system 100 is intended to prevent unauthorized disconnection between the electrical plug 144 and the charging port 120 on the electric vehicle 102. Using the locking system 100 generally includes: methods (e.g., steps, routines, actions, operations, etc.) executed generally under the control of the controller 152 by software (programs) stored in memory 154 in a non-transitory manner, and steps performed by the user in some cases. However, some steps of the method may be performed based on temporary partitions stored in and retrieved from the temporary partitions of memory 154 (e.g., data, records, etc.). Furthermore, some steps are typically performed based on information (e.g., data, records, etc.), actions, and instructions obtained from the user.

[0059] Before recharging battery 128, the user typically generates and stores (uploads) a database of stored biometric records (e.g., stored records, archived records, etc.). The database can reside in memory 154 or another memory accessible by controller 152. The stored biometric records contain biometric information associated with the user and biometric information associated with biometric devices 114, 162, and 176, allowing controller 152 to later use (e.g., download, retrieve, read, etc.) the stored biometric records for determinations related to unlocking connector 144 from socket 120. The stored biometric records can be generated using system 100 via controller 152 and a program residing in memory 154.

[0060] Furthermore, prior to executing the locking method associated with the locking system 100, the user typically stores one or more valid codes (e.g., pre-stored codes including alphanumeric characters, etc.) in memory 154 or other memory accessible by the controller 152. These valid codes can provide alternative techniques for unlocking the connector 144 from the receptacle 120 (e.g., override (e.g., disable, deactivate, etc.) locking conditions (e.g., the locking system 100 prevents the connector 144 from being unlocked from the receptacle 120)). Additionally, embodiments of the locking system 100 can implement alternative activities for unlocking the connector 144 from the receptacle 120 (e.g., presenting a valid signal via an electronic remote key, telephone, testing, diagnostic, and repair instrument, etc.) or mechanical keys and locking devices (e.g., hard locks).

[0061] When a user wishes to recharge battery 128, the user typically inserts charging connector 144 into socket 120. (As mentioned above...) Figures 1 to 5 As indicated, under the control of controller 152 (e.g., in response to programs, instructions, etc. stored in memory 154), connector 144 becomes locked into socket 120. In operation 305, the controller detects the insertion of charging plug 144 into socket 120 of the vehicle. This detection can be automatically triggered (e.g., based on the establishment of a connection between the EVSE station and the vehicle) or manually triggered (e.g., based on a signal from a button (such as biometric sensor / button 174)). Subsequently, in operation 310, the controller reads and stores a biometric record associated with the biometric signature of the plug 144 and socket 120. For example, the biometric sensor may include a fingerprint / thumbprint (e.g., a fingerprint / thumbprint from sensor 174), a palm print or handprint (e.g., a palm print or handprint from sensor 178), or a voice signature (e.g., a voice signature from sensor 176). In operation 320, a locking mechanism is activated, which may be a latch mechanism 166 or other locking structure for securing plug 144 to socket 120.

[0062] When the user wishes to disconnect connector 144 from socket 120 during operation 325, the controller acquires biometric data from the sensor and compares the data with pre-stored biometric data associated with vehicle 102 (e.g., operation 330). Acquisition of biometric data may be performed automatically by the controller (e.g., based on an interrupt-driven event or via a polling algorithm), or it may be performed manually based on an event such as pressing a button (e.g., button / sensor 174). At least one biometric information record (e.g., a re-acquired biometric record) acquired using at least one of the biometric input devices of system 100 (e.g., biometric devices 114, 174, 176, or 178) may then be compared with a pre-stored biometric record. If the biometric data matches the pre-stored biometric data, the controller branches to operation 340, unlocks the locking mechanism, and outputs feedback (e.g., a green light indicating the connection is unlocked or haptic feedback). If the biometric data does not match the pre-stored biometric data, the controller branches to operation 350.

[0063] The user-implemented processing for generating the reacquired record can be the same as or similar to the processing implemented to generate the stored biometric record. For example, in one embodiment, a user may press their thumb or one or more fingers on biometric input device 114, causing the thumb fingerprint / fingerprint reader of the first input device 144 to generate a reacquired record, which includes a fingerprint / palmprint scan image or pressure image of the user's finger, under the control of a controller. In another example embodiment, a user may grasp connector 144, causing the connector to use a hand fingerprint / palmprint reader 178 to generate a reacquired record, which includes a fingerprint / palmprint scan image or pressure image of the user's hand, under the control of a controller. In another embodiment, a user may grasp connector 144, causing a finger / thumb biometric sensor 176 to generate a reacquired biometric record, which includes a fingerprint / thumb fingerprint scan image or pressure image of the user's finger, under the control of a controller. As those skilled in the art will understand, other reacquired biometric records can be generated in a manner similar to that applicable to specific implementations of biometric sensors. Furthermore, at operation 360, the controller may request alternative authentication. Here, for example, the controller may need both a matching thumbprint / fingerprint and a matching handprint / palmprint, or a matching voice signature and fingerprint, or a voice signature using codewords and a matching fingerprint (or a matching handprint / palmprint).

[0064] In response to a user retrieving a biometric record (e.g., a re-retrieved biometric record), the controller may compare the re-retrieved biometric record with a stored biometric record (e.g., a stored biometric record read from memory 154) to determine that the re-retrieved biometric record matches the stored biometric record (or alternatively, determine that the re-retrieved biometric record does not match the stored biometric record).

[0065] In response to the controller determining that the reacquired biometric record matches the stored biometric record, under the control of the controller, the lock in operation 372 is overridden, unlocking connector 144. The user typically removes connector 144 from receptacle 120 (disconnecting connector 144 from receptacle 120).

[0066] In response to the controller determining that the reacquired biometric record does not match the stored biometric record (e.g., during operation 370), the controller may maintain a locked state (e.g., status, mode, etc.) such that the connector 144 remains locked in the socket 120.

[0067] In operation 374, when the user notices or optionally receives a notification from system 100 indicating that system 100 is in a locked state, the user will typically continue to lock out. Lock out may include signals from electronic remote key, signals from vehicle buttons, out-of-control commands presented via keypad, telephone, smartphone, etc., out-of-control commands presented via testing and diagnostic devices, physical key-actuated mechanical locks, etc.

[0068] In response to receiving an alternative lock override in operation 376 and verifying its validity in operation 378, controller 152 unlocks connector 144, and the user can detach connector 144 from receptacle 120 (remove, pull out, etc.). Otherwise, system 100 normally remains in the locked state (i.e., connector 144 normally remains locked in receptacle 120).

[0069] Figure 7This is a flowchart illustrating a simplified biometric unlocking method 400 for preventing unauthorized disconnection between an electrical plug 144 and a charging port 120 on an electric vehicle 102, according to one or more embodiments. The biometric unlocking method 400 generally includes steps (e.g., frames, operations, etc.) 405, 410, 420, 425, 430, 440, 450, 460, 470, and 474 generally performed by a controller (e.g., controllers 126, 152, 130, etc.) via software (programs) stored in a non-transitory manner in memory 154. However, some steps of method 400 may be performed based on information (e.g., data, records, etc.) stored in and retrieved from temporary partitions of memory 154. Furthermore, some steps of method 400 may be performed based on information (e.g., data, records, etc.) and instructions obtained from a user.

[0070] According to one or more of the described embodiments, the locking system 100 is intended to prevent unauthorized disconnection between the electrical plug 144 and the charging port 120 on the electric vehicle 102. The use of the locking system 100 generally includes methods (e.g., steps, routines, actions, operations, etc.) typically performed under the control of the controller 152 via software (programs) stored in a non-transitory manner in memory 154, and in some cases, steps performed by the user. However, some steps of the methods may be performed based on information (e.g., data, records, etc.) stored in and retrieved from temporary partitions of memory 154. Furthermore, some steps are typically performed based on information (e.g., data, records, etc.), actions, and instructions obtained from the user.

[0071] Before recharging battery 128, the user typically generates and stores (uploads) a database of stored biometric records (e.g., stored records, archived records, etc.). The database can reside in memory 154 or another memory accessible by controller 152. The stored biometric records contain biometric information associated with the user and biometric information associated with biometric devices 114, 162, and 176, allowing controller 152 to later use (e.g., download, retrieve, read, etc.) the stored biometric records to determine whether to unlock connector 144 from receptacle 120. The stored biometric records can be generated using system 100 via controller 152 and a program residing in memory 154. In some embodiments, unauthorized biometric storage can be prevented by requiring the presence of a remote key during data storage.

[0072] Furthermore, prior to executing the locking method associated with the locking system 100, the user typically stores one or more valid codes (e.g., pre-stored codes including alphanumeric characters, etc.) in a memory 154 or other memory accessible by the controller 152. These valid codes can provide alternative techniques for unlocking the connector 144 from the socket 120 (e.g., override (e.g., disabled, deactivated, etc.) locking conditions (e.g., a condition where the locking system 100 prevents the connector 144 from being unlocked from the socket 120)). Additionally, embodiments of the locking system 100 can implement alternative activities for unlocking the connector 144 from the socket 120 (e.g., valid signals presented by electronic remote keys, telephones, testing, diagnostic, and repair instruments, etc.) or mechanical keys and locking devices (e.g., force-locking devices).

[0073] When a user wishes to recharge battery 128, the user typically inserts charging connector 144 into socket 120. (As mentioned above...) Figures 1 to 5 As indicated, under the control of controller 152 (e.g., in response to programs, instructions, etc. stored in memory 154), connector 144 becomes locked into socket 120. In operation 405, the controller detects the insertion of charging plug 144 into socket 120 of the vehicle. This detection can be automatically triggered (e.g., based on the establishment of a connection between the EVSE station and the vehicle) or manually triggered (e.g., based on a signal from a button (such as biometric sensor / button 174)). Subsequently, in operation 410, the controller reads and stores a biometric record associated with the biometric signature of the plug 144 and socket 120. For example, the biometric sensor may include a fingerprint / thumbprint (e.g., a fingerprint / thumbprint from sensor 174), a palm print or handprint (e.g., a palm print or handprint from sensor 178), or a voice signature (e.g., a voice signature from sensor 176). In operation 420, a locking mechanism is activated, which may be a latch mechanism 166 or other locking structure for securing plug 144 to socket 120.

[0074] When the user wishes to disconnect connector 144 from socket 120 during operation 425, the controller acquires biometric data from the sensor and compares the data with pre-stored biometric data associated with vehicle 102 (e.g., operation 430). Acquisition of biometric data may be performed automatically by the controller (e.g., based on an interrupt drive event or via a polling algorithm), or it may be performed manually based on an event such as pressing a button (e.g., button / sensor 174). At least one biometric information record (e.g., a re-acquired biometric record) acquired using at least one of the biometric input devices of system 100 (e.g., biometric devices 114, 174, 176, or 178) may then be compared with a pre-stored biometric record. If the biometric data matches the pre-stored biometric data, the controller branches to operation 440, unlocks the locking mechanism, and outputs feedback (e.g., a green light indicating the connection is unlocked or haptic feedback). If the biometric data does not match the pre-stored biometric data, the controller branches to operation 450.

[0075] The user-implemented processing for generating the reacquired record can be the same as or similar to the processing implemented to generate the stored biometric record. For example, in one embodiment, a user may press their thumb or one or more fingers on the biometric input device 114, causing the thumb fingerprint / fingerprint reader of the first input device 144, under the control of a controller, to generate a reacquired record including a fingerprint / palmprint scan image or pressure image of the user's finger. In another exemplary embodiment, a user may grasp the connector 144, causing the connector hand fingerprint / palmprint reader 178, under the control of a controller, to generate a reacquired record including a fingerprint / palmprint scan image or pressure image of the user's hand. In another embodiment, a user may grasp the connector 144, causing the finger / thumb biometric sensor 176, under the control of a controller, to generate a reacquired biometric record including a fingerprint / thumb fingerprint scan image or pressure image of the user's finger. As those skilled in the art will understand, other reacquired biometric records can be generated in a manner similar to that used in specific implementations of biometric sensors. Furthermore, at operation 460, the controller may request alternative authentication. Here, for example, the controller may need both a matched fingerprint / thumbprint and a matched handprint / palmprint, or a matched voice signature and a fingerprint / thumbprint, or a voice signature using codewords and a matched fingerprint / thumbprint (or a matched handprint / palmprint).

[0076] In response to a user retrieving a biometric record (e.g., a re-retrieved biometric record), the controller may compare the re-retrieved biometric record with a stored biometric record (e.g., a stored biometric record read from memory 154) to determine that the re-retrieved biometric record matches the stored biometric record (or alternatively, determine that the re-retrieved biometric record does not match the stored biometric record).

[0077] In response to the controller determining that the reacquired biometric record matches the stored biometric record, connector 144 is unlocked under the control of the controller. The user typically removes connector 144 from receptacle 120 (disconnecting connector 144 from receptacle 120).

[0078] In response to the controller determining that the reacquired biometric record does not match the stored biometric record (e.g., during operation 470), the controller may maintain a locked state (e.g., status, mode, etc.) such that the connector 144 remains locked in the socket 120.

[0079] In operation 474, when the user notices or optionally receives a notification from system 100 indicating that system 100 is in a locked state, the user will typically continue to lock out. Lock out may include signals from electronic remote key, signals from vehicle buttons, out-of-control commands presented via keypad, telephone, smartphone, etc., out-of-control commands presented via testing and diagnostic devices, mechanical lock actuation actuated by a physical key, etc.

[0080] The control logic or functions performed by the controller may be represented by flowcharts or similar diagrams in one or more accompanying figures. These figures provide representative control strategies and / or logic, which may be implemented using one or more processing strategies (such as event-driven, interrupt-driven, multitasking, multithreading, etc.). Therefore, the individual steps or functions shown may be performed in the order shown, in parallel, or in some cases omitted. Although not always explicitly shown, those skilled in the art will recognize that one or more of the steps or functions shown may be repeatedly performed depending on the specific processing strategy used. Similarly, the order of processing is not necessarily required to achieve the functions and advantages described herein, but is provided for ease of illustration and description. The control logic may be implemented primarily in the form of software executed by a microprocessor-based vehicle, engine, and / or powertrain controller (such as a controller). Of course, the control logic may be implemented, depending on the specific application, in the form of software, hardware, or a combination of software and hardware in one or more controllers. When implemented in software form, the control logic may be provided in one or more computer-readable storage devices or media that already store data representing code or instructions executed by a computer to control the vehicle or its subsystems. Computer-readable storage devices or media may include one or more of a plurality of known physical devices that utilize electrical memory, magnetic memory and / or optical memory to store executable instructions and associated calibration information, operating variables, etc.

[0081] The processes, methods, or algorithms disclosed herein can be transmitted to, or implemented by, a processing device, controller, or computer, which may include any existing programmable electronic control unit or a dedicated electronic control unit. Similarly, the processes, methods, or algorithms can be stored in various forms as data or instructions executable by a controller or computer, including but not limited to information permanently stored on non-writable storage media (such as read-only memory (ROM) devices) and information variableally stored on writable storage media (such as floppy disks, magnetic tapes, CDs, random access memory (RAM) devices, and other magnetic and optical media). The processes, methods, or algorithms can also be implemented in a software executable object. Optionally, the processes, methods, or algorithms can be implemented wholly or partially using suitable hardware components (such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), state machines, controllers, or other hardware components or devices) or a combination of hardware, software, and firmware components.

[0082] While exemplary embodiments have been described above, they are not intended to describe all possible forms covered by the claims. The terms used in this specification are descriptive and not restrictive, and it should be understood that various changes may be made without departing from the spirit and scope of this disclosure. As previously stated, features of various embodiments may be combined to form further embodiments of the invention that may not be explicitly described or shown. Although various embodiments may have been described as providing advantages or superiority over other embodiments or prior art for one or more desired characteristics, those skilled in the art will recognize that one or more features or characteristics may be compromised to achieve desired overall system properties depending on the specific application and implementation. These properties may include, but are not limited to, cost, strength, durability, lifecycle cost, marketability, appearance, packaging, size, maintainability, weight, manufacturability, ease of assembly, etc. Therefore, embodiments described as inferior to other embodiments or prior art in one or more characteristics are not outside the scope of this disclosure and may be desired for specific applications.

Claims

1. An electric vehicle charging system, comprising: The socket is located on electric vehicles; The controller is configured as follows: In response to a removal request and an inconsistency between the stored biometric record and the first biometric data received from the first biometric sensor, the stored biometric record is compared with the second biometric data received from the second biometric sensor, wherein the second biometric sensor is different from the first biometric sensor. In response to a match in the comparison, an unlock request is generated; In response to a mismatch in the comparison and an override command received from a user interface located within the electric vehicle, the validity of the override command is verified; and In response to the overdrive command being valid, an unlock request is generated.

2. The electric vehicle charging system as described in claim 1, wherein, The stored biometric records include data recorded from a first biometric sensor and a second biometric sensor when the charging plug is connected to a socket on the electric vehicle.

3. The electric vehicle charging system as described in claim 2, wherein, The first biometric sensor is a fingerprint reader or a palm print reader.

4. The electric vehicle charging system as described in claim 3, wherein, The first biometric sensor is integrated with the switch.

5. The electric vehicle charging system as described in claim 3, wherein, The second biometric sensor is a fingerprint reader, palm print reader, microphone, or camera.

6. The electric vehicle charging system as described in claim 5, wherein, The second biometric sensor is installed on the outer surface of the electric vehicle and near the socket, or on the door of the electric vehicle and near the door handle, or on the outer surface of the electric vehicle and near the door handle.

7. The electric vehicle charging system as described in claim 2, wherein, The biometric record includes at least one of thumbprint, fingerprint, palm print, retinal image, facial image, voice signature, and codeword voice signature.

8. A charging station for electric vehicles, comprising: The plug has a first biometric sensor and is configured to be connected to an electric vehicle; The controller is configured as follows: In response to the detection that the plug is engaged with the electric vehicle, the locking mechanism is activated; The locking mechanism is deactivated in response to a removal request and a match between the biometric data received from the first biometric sensor and the stored biometric record. In response to a mismatch in the comparison, a second biometric sensor, different from the first biometric sensor, is activated; In response to a mismatch between biometric data received from the second biometric sensor and the stored biometric record, and upon receiving an override command from a user interface located within the electric vehicle, the system verifies the validity of the override command; and In response to the override command being valid, the locking mechanism is deactivated.

9. The charging station as described in claim 8, wherein, The stored biometric records include data recorded from a first biometric sensor and a second biometric sensor when the charging plug is connected to a socket on the electric vehicle.

10. The charging station as described in claim 9, wherein, The first biometric sensor is a fingerprint reader or a palm print reader.

11. The charging station as described in claim 10, wherein, The first biometric sensor is integrated with the switch.

12. The charging station as described in claim 10, wherein, The second biometric sensor is a fingerprint reader, palm print reader, microphone, or camera.

13. The charging station as described in claim 12, wherein, The second biometric sensor is installed on the outer surface of the electric vehicle and near the socket, or on the door of the electric vehicle and near the door handle, or on the outer surface of the electric vehicle and near the door handle.

14. The charging station as described in claim 9, wherein, The biometric record includes at least one of thumbprint, fingerprint, palm print, retinal image, facial image, voice signature, and codeword voice signature.

15. A method for unlocking an electric vehicle plug, comprising: The controller performs the following operations: In response to a disconnection request, the biometric data received from the first biometric sensor is compared with the stored biometric records; In response to the inconsistency of the comparison, another biometric data received from the second biometric sensor is compared with the stored biometric record, wherein the second biometric sensor is different from the first biometric sensor; In response to a match in the comparison of the other biometric data, the electric vehicle plug is unlocked; In response to a mismatch in the comparison of the other biometric data and a bypass command received from a remote server, verify the validity of the bypass command; and In response to the override command being valid, the plug is unlocked.

16. The method of claim 15, further comprising: In response to a charging request, the first biometric sensor is activated, data is stored as an entry in the stored biometric record, and the locking mechanism is released, allowing the plug to detach from the electric vehicle charging station and connect to the electric vehicle.

17. The method of claim 16, wherein, The first biometric sensor includes a fingerprint reader and a palm print reader.

18. The method of claim 17, wherein, The first biometric sensor also includes a switch that, when pressed, indicates the charging request and the disconnection request.

19. The method of claim 17, wherein, The second biometric sensor is a fingerprint reader, palm print reader, microphone, or camera.

20. The method of claim 19, wherein, The second biometric sensor is installed on the outer surface of the electric vehicle and near the charging socket, or on the door of the electric vehicle and near the door handle, or on the outer surface of the electric vehicle and near the door handle.

21. The method of claim 16, wherein, The biometric record includes at least one of thumbprint, fingerprint, palm print, retinal image, facial image, voice signature, and codeword voice signature.

Images