Educational device for electric vehicles including powertrain simulation

Abstract

The present invention provides an electric vehicle training device including a dynamometer simulation. In one embodiment, the device may include: a simulation module that receives driving conditions from a user, calculates the response of the dynamometer according to the driving conditions, and outputs a control signal according to the calculation result; a gear ratio variable module that receives a control signal from the simulation module and physically implements virtual gear ratio changes and load conditions; a status display module that visually displays the status of the dynamometer based on data transmitted from the simulation module; a power supply module that provides a space for mounting a plurality of battery cells and supports battery-related diagnosis and practice of the electric vehicle; and a drive unit module that provides a space for mounting the actual drive system of the electric vehicle and is provided to house the power supply module.

Description

Technology Field

[0001] The present invention relates to an electric vehicle educational device including a dynamometer simulation, and more specifically, to an electric vehicle educational device including an integrated dynamometer simulation configured to visually and physically reproduce virtual simulation results for the operation of an electric vehicle dynamometer, and simultaneously enable structural learning, disassembly and assembly, and measurement practice using actual electric vehicle dynamometer components. Background Technology

[0003] As the adoption of electric vehicles expands globally, the importance of specialized technical training regarding the unique structures of electric vehicles, particularly powertrain systems that distinguish them from internal combustion engine vehicles, is growing day by day. In the fields of electric vehicle maintenance and development, practical training involving the direct observation and manipulation of actual component structures is essential, alongside a theoretical understanding of power transmission principles.

[0004] However, conventional educational methods and equipment have limitations in that theoretical and practical training are primarily conducted separately, resulting in a lack of organic connection between the two. Theoretical training lacked intuitive representation regarding the correlations between components and real-time responses, while practical training using actual vehicles suffered from safety issues caused by high voltage and rotating parts, as well as difficulties in observing internal structures, along with a lack of derivation of organic theoretical background and intuitive expression. Furthermore, single-function training equipment designed for specific educational purposes faced challenges in simulating driving situations that incorporated diverse environmental factors or conducting multiple training courses simultaneously, leading to reduced educational efficiency. Additionally, the use of multiple pieces of equipment resulted in high costs and required large installation spaces.

[0005] To address these issues, there is a need to develop an electric vehicle educational device that includes a multi-purpose dynamometer simulation capable of combining the flexibility of virtual simulation with the realism of physical equipment to safely and efficiently integrate theoretical and practical training within a single device, and further support preliminary research. The problem to be solved

[0007] The present invention has been devised to solve the aforementioned problems and aims to enable the organic connection and simultaneous progress of theoretical and practical education through a single device by organically linking virtual simulation of an electric vehicle dynamometer with real-world-based practice within a single device.

[0008] In addition, the present invention aims to aid the intuitive understanding of learners by visually and clearly representing the mechanical movements and energy flows within the dynamometer, which are difficult to observe in actual vehicles.

[0009] In addition, the present invention aims to increase the usability of educational equipment and reduce cost and spatial constraints by enabling flexible combinations according to educational content through a modularized configuration for each function.

[0010] In addition, the present invention aims to provide a multi-purpose device that can be utilized not only for education but also for preliminary research and development by mutually feeding back the simulation results, which apply load fluctuations and changes in the gear ratio of the reduction gear according to driving conditions, with the measurement data of the actual module to enhance the simulation.

[0011] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0013] As a technical means to achieve the above-mentioned technical problem, the present invention provides an electric vehicle training device including a dynamometer simulation. In one embodiment, the device may include: a simulation module that receives driving conditions from a user, calculates the response of the dynamometer according to the driving conditions, and outputs a control signal according to the calculation result; a gear ratio variable module that receives a control signal from the simulation module and physically implements virtual gear ratio changes and load conditions; a status display module that visually displays the status of the dynamometer based on data transmitted from the simulation module; a power supply module that provides a space for mounting a plurality of battery cells and supports battery-related diagnosis and practice of the electric vehicle; and a drive unit module that provides a space for mounting the actual drive system of the electric vehicle and is provided to house the power supply module.

[0014] In one embodiment, the simulation module may include: a display unit for displaying simulation data; a simulation unit including a simulation device and a communication device; an interface unit including a sliding touchscreen; a container unit for housing auxiliary parts; and a wheel provided on the lower part of the container unit.

[0015] In one embodiment, the status display module may include: a case; a transparent lid that opens and closes the case; a display unit disposed within the case and visually displaying a physical quantity representing at least one of the directionality of energy or the magnitude of energy of the electric vehicle's dynamometer based on data transmitted from a simulation module; a communication unit that wirelessly transmits and receives data with the simulation module; and a touch panel for selecting the physical quantity to be displayed.

[0016] In one embodiment, the status display module may further include a first display portion and a second display portion arranged to form concentric circles having different radii and having a plurality of light sources arranged along the circumferential direction; and a reflector provided below the light source to reflect light emitted from the light source.

[0017] In one embodiment, the status indicator module may further include a fixing part provided on the rear of the case and detachably attached to the surface of the driving module or power module using magnetism.

[0018] In one embodiment, the gear ratio variable module includes: a first motor connected to an input unit that receives a control signal from a simulation module to generate rotational power; a power transmission unit that converts the rotational power transmitted from the input unit according to the gear ratio and transmits it to an output unit; a frame that forms the outer periphery of the power transmission unit and is provided in a form with a part open; a second motor including a load generating device connected to an output unit that generates rotational resistance; and a sensor unit that detects the state of the first motor and the second motor, and the simulation module receives feedback data from the sensor unit, compares and analyzes the feedback data with the response calculation result of the dynamometer, and can correct the calculation formula of the simulation module based on the difference between the two.

[0019] In one embodiment, the power transmission unit may include: a toroidal transmission unit comprising a pair of opposing toroidal disks provided within a frame and a plurality of rollers interposed between the toroidal disks; a stepper motor that rotates according to a control signal of a simulation module; and a transmission ratio control unit that varies the transmission ratio of the toroidal transmission unit by adjusting the contact position or inclination of the rollers in conjunction with the rotation of the stepper motor.

[0020] In one embodiment, the drive unit module includes a plate portion on which an actual drive system is mounted and a leg portion that supports the plate portion and includes wheels for movement, and the plate portion and the leg portion may define a storage space in which a power unit module is stored.

[0021] In one embodiment, the power supply module may include: a storage unit accommodating a plurality of battery cells and a BMS; a cover formed of a transparent material that opens and closes the storage unit and allows the interior of the storage unit to be observed from the outside; and wheels for moving the storage unit. Effects of the invention

[0023] According to the present invention as described above, virtual simulation of an electric vehicle dynamometer and physical-based practice are organically linked within a single device, thereby providing the advantage of enabling the organic connection and simultaneous progress of theoretical and practical education through a single device.

[0024] In addition, the present invention has the advantage of enabling real-time monitoring of dynamometer changes resulting from vehicle driving with various environmental factors applied, while also allowing visual observation and access to the internal structure of actual parts.

[0025] In addition, the present invention has the advantage of helping learners intuitively understand by visually and clearly representing the mechanical movements and energy flows within the dynamometer, which are difficult to observe in actual vehicles.

[0026] In addition, the present invention has the advantage of increasing the usability of educational equipment and reducing cost and spatial constraints by ensuring physical accessibility to individual parts through a modular configuration for each function, while simultaneously enabling flexible combinations according to educational content.

[0027] In addition, the present invention has the advantage of providing a multi-purpose device that can be utilized not only for education but also for preliminary research and development by mutually feeding back simulation results and measurement data of the actual module to enhance the simulation.

[0028] The effects of the present invention are not limited to the effects described above, and unmentioned effects will be clearly understood by those skilled in the art from this specification and the attached drawings. Brief explanation of the drawing

[0030] FIG. 1 is a perspective view schematically showing the overall configuration of an electric vehicle educational device including a dynamometer simulation according to one embodiment of the present invention. FIG. 2 is a perspective view showing a simulation module according to one embodiment of the present invention. FIG. 3 is a perspective view showing a driving module according to one embodiment of the present invention. FIG. 4 is a perspective view illustrating the combined relationship between a plurality of driving unit modules and a power supply unit module according to one embodiment of the present invention. FIG. 5 is a perspective view showing an actual drive system mounted on the upper part of a drive module according to one embodiment of the present invention. FIGS. 6 to 8 are views of a variable gear ratio module according to an embodiment of the present invention, each viewed from a different direction. FIGS. 9 and 10 are perspective views showing a status display module according to an embodiment of the present invention from different directions. Specific details for implementing the invention

[0031] Embodiments of the present invention are described below with reference to the attached drawings to enable those skilled in the art to easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification are denoted by similar reference numerals.

[0032] Throughout this specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "electrically connected" with other elements interposed between them.

[0033] Throughout this specification, when a component is described as being located "on" another component, this includes not only cases where a component is in contact with another component, but also cases where another component exists between the two components.

[0034] Throughout this specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0035] The present invention provides an electric vehicle educational device (1000) that includes a dynamometer simulation capable of simulating the structure and operating principles of the electric vehicle dynamometer and testing the actual device.

[0036] FIG. 1 shows an electric vehicle educational device (1000) including a dynamometer simulation according to one embodiment of the present invention. Referring to FIG. 1, in one example, the device (1000) according to the present invention includes a simulation module (100), a driving unit module (200), a power supply unit module (300), a gear ratio variable module (400), and a status display module (500).

[0037] The simulation function can be implemented through a simulation module (100), a status display module (500), and a gear ratio variable module (400).

[0038] In one example, the simulation module (100) includes a control unit (not shown), a communication unit (not shown), and a display unit. When a user inputs driving conditions (speed, incline angle, ambient temperature, reduction gear ratio, air conditioner temperature, etc.), the simulation module calculates the dynamometer response according to the conditions and outputs the result to the display unit (110), thereby controlling the components described below. In one example, the status display module (500) visually displays the input data received from the simulation module (100), allowing the user to intuitively check the relationship between the conditions set by the user and the dynamometer response. In one example, the gear ratio variable module (400) reproduces the operating principle of the electric vehicle's drive system at the simulation level by simulating virtual gear ratio changes and load conditions according to the simulation signal output from the control unit (not shown).

[0039] The physical education function can be implemented through the driving unit module (200) and the power unit module (300).

[0040] In one example, the drive module (200) is provided to be equipped with an actual drive system (600) including an actual drive shaft, a reduction gear, a wheel, a motor, an inverter, etc. Accordingly, it is provided to allow direct observation and practice of the front or rear-wheel drive structure and the interior of individual components of an electric vehicle. The power module (300) includes actual battery cells and a BMS to measure changes in current, voltage, temperature, etc., and by supplying power to the drive module (200), it enables the conditions calculated in the simulation to be reproduced in an actual driving state.

[0041] In one example, the simulation module (100) manages the operation of the entire system in an integrated manner according to driving conditions entered by the user. For instance, the simulation module (100) can virtually set driving conditions of the electric vehicle (speed, incline angle, ambient temperature, reduction gear ratio, air conditioner temperature, etc.), calculate the dynamometer response according to the conditions, and control each component such as the gear ratio variable module (400), drive unit module (200), power unit module (300), and status display module (500).

[0042] Figure 2 shows the appearance of the simulation module (100) of Figure 1.

[0043] In one example, the simulation module (100) may include a control unit (not shown), a simulation unit (not shown), a display unit (110), an interface unit (120), and a container unit (130).

[0044] A control unit (not shown) calculates driving conditions, gear ratios, load values, etc., and controls the operation of each module. The control unit (not shown) calculates the rotational speed of a motor (not shown), load size, battery output, etc., transmits the corresponding signals to each module, and receives feedback data from each module to correct the simulation results.

[0045] The simulation unit (not shown) includes a communication device and a simulation device that enable wired and wireless data transmission and reception between the control unit (not shown) and each component. The simulation unit (not shown) may adopt at least one of BLE, Wi-Fi, or wired communication methods. In one example, the simulation unit (not shown) provides two channels (channel A for broadcasting and channel B for 1:1 communication). Channel A (not shown) of the simulation unit allows a single control unit (not shown) to simultaneously control multiple status display modules through a 1:N communication structure, and channel B can control a variable gear ratio module and receive driving result values ​​through a 1:1 connection.

[0046] The display unit (110) visually displays the calculation results of the control unit (not shown), the simulation progress status, and the operation information of each component. In one example, the display unit (110) may include a display (111) for displaying simulation results and system status, and a jig (112) for supporting or adjusting the position of the display (111).

[0047] In one example, the interface unit (120) may be provided as a touchscreen (120) for user input. In one example, the touchscreen (120) may be provided at the bottom of the display (111). In one example, the touchscreen (120) may be provided to be slidable along a rail (121). In one example, a control unit (not shown) may be embedded in a console (123) in the lower area of ​​the display (111). In one example, the control unit (not shown) may include at least one device capable of performing simulation calculations and generating control signals, such as a computer, a microprocessor, a CPU, a logic controller, an embedded control board, a DSP, or an FPGA.

[0048] In one example, a container section (130) may be provided at the bottom of the simulation module (100). Auxiliary components such as a power supply, a communication module, and spare cables may be stored inside the container section (130). In one example, wheels (131) may be provided on the bottom surface of the simulation module (100) to enable movement of the simulation module (100).

[0049] FIG. 3 shows the appearance of the drive unit module of FIG. 1, FIG. 4 shows the usage mode of the drive unit module according to one embodiment of the present invention, and FIG. 5 shows the appearance of an actual drive system (600) mounted on the drive unit module according to one embodiment of the present invention.

[0050] The drive unit module (200) is designed to implement the actual drive system (600) of an electric vehicle in a full-size, scaled-down, or cutaway form, so that the configuration and power transmission principles of the drive shaft, reduction gear, wheel, motor, power converter, motor control device, etc., can be observed and operated for educational, practical, and research purposes, while simultaneously allowing for the actual wiring structure and maintenance practice to be performed.

[0051] In one example, at least one drive module (200) may be provided. In one example, the drive module (200) may be composed of two sets of the same structure. Each drive module (201, 202) may operate independently to perform front wheel or rear wheel practice individually. Alternatively, the drive modules (200) may be linked to perform practice on an integrated system. In one example, the storage space (215) of each drive module (201, 202) is combined to provide the entire power supply module (300) to be stored in the lower part of the drive modules (201, 202). In one example, the storage space (215) of each drive module (201, 202) is combined to store the power supply module (300), so that the power supply module (300) may not be exposed to the outside. Accordingly, there is an advantage of saving space.

[0052] In one example, the drive unit module (200) may include a plate portion (210) and a leg portion (220) that supports the plate portion (210). In one example, the plate portion (210) may be used as a work surface on which a practice object (600), such as a drive shaft, a reduction gear, a wheel, or a motor (not shown), is mounted. In one example, the practice object (600) may include an actual drive system (600) of an electric vehicle as shown in FIG. 5. In one example, the plate portion (210) and the leg portion (220) may be combined to define a storage space (215) in which a power supply unit module (300), described later, is stored. In one example, a wheel (230) for movement may be provided on the lower surface of the leg portion (220). Accordingly, the drive unit module (200) can be easily moved or positioned according to the practice environment. In addition, there is an advantage of reducing the installation space for the power supply module (300) and reducing the complexity of the wiring.

[0053] The practice object (600) is a practice component mounted on the upper part of the drive module (200), and in addition to the drive shaft, reduction gear, wheel, motor (not shown) described above among the actual drive system (600) of the electric vehicle, various systems such as a cooling system, power conversion system, and control system can be selectively combined.

[0054] The power supply module (300) is a power supply unit that supplies power to the drive module (200). At the same time, the power supply module (300) is an educational battery module for learning and observing the battery structure and operation characteristics of an electric vehicle or a hybrid vehicle. Referring again to FIG. 1, in one example, the power supply module (300) may include a housing (301), a connecting part (not shown), and a wheel (320). The housing (301) protects the battery cells and includes a storage part and a cover (310). A storage part is provided in the internal space of the housing (301). The storage part is provided as a space for accommodating a plurality of battery cells. In one example, the storage part may be configured so that stacked cells can be detached or replaced individually or in modules or pack units. In one example, internal wiring and monitoring circuits, etc., may be arranged within the housing (301). The cover (310) is provided to open and close the storage part, which is the internal space of the housing (301). In one example, the cover (310) forms the upper part of the housing (301). In one example, the cover (310) is provided with a transparent material. This allows the cell arrangement and wiring status inside the storage unit to be checked from the outside. In one example, the connection part (not shown) may include a connector for transmitting power and signals between the power unit module (300) and the drive unit module (200) or the simulation module (100). The connector may be linked with a circuit that monitors the voltage, current, temperature, etc. of each cell. The wheel (320) is mounted on the bottom surface of the housing (301). This allows the power unit module (300) to be moved so that it can be easily inserted and stored between or under the drive unit modules (200).

[0055] In one example, the battery cell provided within the power supply module (300) may be configured to mimic the structure of an actual electric vehicle cell or may be an actual battery cell. In one example, the power supply module (300) is provided to enable charging and discharging experiments of the battery cell, cell balancing practice, etc.

[0056] In one example, a diagnostic port and a monitoring circuit may be provided within the power supply module (300). Accordingly, external diagnostic equipment can be connected to the power supply module (300) or current and voltage data can be measured in real time. The power supply module (300) may be positioned between the driving modules (200) or below each driving module (200).

[0057] In one example, the power supply module (300) may further include a communication circuit. The communication circuit transmits status data, such as current, voltage, and temperature detected by the monitoring circuit within the power supply module (300), to the simulation module (100) and can receive a control signal from the simulation module (100). Accordingly, the simulation module (100) can correct the simulation results or control the driving conditions in real time based on the status data of the power supply module (300). The simulation results can be corrected by communicating with the simulation module (100) and feeding back the power status data.

[0058] FIGS. 6 to 8 show the appearance of a gear ratio variable module (400) according to an embodiment of the present invention as viewed from different directions. The gear ratio variable module (400) is a device for reproducing the operating principle of the drivetrain of an electric vehicle at a simulation level by physically implementing virtual gear ratio changes and load conditions according to a control signal output from a simulation module (100).

[0059] Referring to FIGS. 6 to 8, in one example, the gear ratio variable module (400) may include a frame (401), an input unit (410), an output unit (430), a power transmission unit (420), a first motor (not shown), a second motor (not shown), a sensor unit (not shown), and a communication unit (not shown).

[0060] The input section (410) is a part that receives rotational input applied from the simulation module (100) through a belt or coupling. A first motor (not shown) is connected to the input section (410), and the first motor (not shown) virtually simulates an electric vehicle motor (not shown) in the simulation. The first motor (not shown) generates rotational power according to current and voltage signals applied from the control section (not shown), and the rotational power of the first motor (not shown) is transmitted to the power transmission section (420) through the input shaft (411).

[0061] The power transmission unit (420) converts the rotational force transmitted from the input unit (410) according to the gear ratio and transmits it to the output unit (430). In one example, the power transmission unit (420) may adopt a CVT (Continuously Variable Transmission) toroidal method. In one example, the power transmission unit (420) includes a toroidal gear shift unit (423), a step motor (not shown), and a gear ratio control unit (440).

[0062] The frame (401) forms the outer perimeter of the power transmission unit (420). In one example, the frame (401) is provided with a portion open so that the internal toroidal transmission unit can be observed. Accordingly, it is provided so that a trainee can visually check the inside of the toroidal transmission unit.

[0063] In one example, the toroidal transmission unit (423) includes a pair of toroidal disks (421) and a plurality of rollers (422) interposed between them to transmit power. Each disk (421) has a curved surface formed between its outer surface and inner surface.

[0064] In one example, the gear ratio control unit (440) includes a rotational transmission screw (441), an up-and-down movement jig (442), a motion conversion link (444), and an up-and-down movement jig guide (443). A stepper motor (not shown) is connected to a motor connection unit (450). The stepper motor (not shown) rotates according to a control signal from the simulation module (100) to drive the rotational transmission screw (441), thereby initiating a gear ratio control operation. The rotational transmission screw (441) rotates by the rotation of the stepper motor (not shown) and raises the up-and-down movement jig (442) coupled to it in the axial direction. At this time, the lifting motion of the up-and-down movement jig (442) is converted into a motion that adjusts the inclination of the roller (422) within the toroidal transmission unit (423) through the motion conversion link (444) connected to the jig. The vertical movement jig guide (443) stably guides the movement trajectory of the jig (442) to prevent twisting or eccentric movement. As the inclination of the roller (422) changes, the contact radius between the roller and the toroidal disk (421) changes, so the rotation ratio between the input shaft (411) and the output shaft (431) is continuously changed without direct engagement of the gears.

[0065] Through this structure, the gear ratio of the toroidal transmission unit (423) is adjusted in real time by the rotational control of the step motor (not shown), thereby simply and safely reproducing the situation of changing the reduction gear ratio of the electric vehicle.

[0066] The output unit (430) outputs the rotational force converted through the power transmission unit (420) to the outside. A second motor (not shown) is connected to the output unit (430), and the second motor (not shown) simulates a load by including a load generating device that generates rotational resistance. The load generating device may include a magnetic brake composed of an electromagnet and a permanent magnet. The load generating device is provided to adjust rotational resistance by varying the magnitude of the magnetic force of the load generating device according to a control signal applied from the simulation module (100). In one example, the control signal input to the load generating device may be a Pulse Width Modulation (PWM) signal. For example, the road slope angle range (-30 degrees to +30 degrees) in the simulation is mapped to the PWM control signal range (0 to MAX) of the load generating device, thereby converting and implementing conditions set in the simulation, such as the road slope angle and vehicle load, into actual mechanical loads.

[0067] The sensor unit (not shown) detects physical states such as rotational speed, current, voltage, and temperature within the gear ratio variable module (400), or the states of the first motor (not shown) and the second motor (not shown) in real time, and transmits feedback data to the control unit (not shown) of the simulation module (100). The simulation module (100) can compare and analyze the received feedback data with the calculation results of the computer simulation. Furthermore, based on the analyzed differences, the user can modify the variables or formulas of the computer simulation to correct the simulation results to be closer to actual physical phenomena, thereby enhancing the simulation and utilizing it for research and development activities regarding the efficiency of electric vehicle power systems according to various gear ratios and conditions.

[0068] The communication unit (not shown) wirelessly transmits and receives data, such as information obtained from the simulation module (100) and the sensor unit (not shown). In one example, the communication unit (not shown) uses a BLE (Bluetooth Low Energy) communication method and operates as a plurality of observers connected in a 1:N manner with the control unit (not shown) (Advertiser) of the simulation module (100). Through this, a single control unit (not shown) can simultaneously control multiple gear ratio variable modules (400), so that each module can be independently placed and utilized on a trainee table, etc.

[0069] FIGS. 9 and 10 show the appearance of a status display module (500) according to an embodiment of the present invention. The status display module (500) visually displays the driving status of an electric vehicle based on data transmitted from a simulation module (100). The status display module (500) displays virtual input values ​​calculated by the simulation module (100) rather than physical sensor data of the actual drive system, thereby allowing an educator to intuitively recognize the simulation conditions.

[0070] Referring to FIGS. 9 and 10, in one example, the status display module (500) includes a case (501), a lead (510), a display unit (520), a communication unit (not shown), a fixing unit (530), and an operating unit (540).

[0071] The case (501) protects internal components, and is provided with a display unit (520) and a communication unit (not shown) inside, and a fixing unit (530) on the rear. A lid (510) opens and closes the case (501). In one example, an operating unit (540) is provided on the front of the case (501).

[0072] The display unit (520) is provided to display at least one of the directionality or energy magnitude of the electric vehicle dynamometer based on data transmitted from the simulation module (100). In one example, the energy of the electric vehicle dynamometer may include at least one of electrical energy stored in the power supply module (300), mechanical energy generated from a drive motor (not shown) of the drive module (200), or a motor (not shown) within the gear ratio variable module (400).

[0073] In one example, the display unit (520) includes a first display unit (521), a second display unit (522), a reflector (527), and a lead (510). In one example, the first display unit (521) and the second display unit (522) may be provided to have different radii and form concentric circles. In one example, the first display unit (521) and the second display unit (522) may be provided in a ring shape. In one example, the first display unit (521) and the second display unit (522) each have a plurality of light sources (525) arranged along the circumferential direction. In one example, the light sources (525) may be LEDs (e.g., NeoPixels) capable of individually flashing and color control, but are not limited thereto.

[0074] A reflector (527) is positioned adjacent to the first display unit (521) and the second display unit (522) to reflect and diffuse light emitted from the light source (525), thereby improving the dynamic visibility of the light source. In one example, the light source (525) may be provided on the reflector (527). For instance, the reflector (527) may be provided below the light source (525). A lead (510) is provided on the front of the display unit (520). In one example, the reflector (527) forms an inclined or curved surface on the side of the light source (525) to reflect and concentrate light emitted from the light source (525) to the front of the display unit (520), i.e., the direction of the lead (510), thereby improving visibility and light efficiency. In one example, the lead (510) may be formed of a transparent or translucent material that has undergone diffuse reflection treatment to disperse light. This allows the light from the light source (525) to be seen not directly but spread out softly, so that the movement of the light can be clearly observed from various angles and the visibility of the light source's rapid movement can be increased.

[0075] In one example, the first display unit (521) may be provided radially outward from the second display unit (522). In one example, the first display unit (521) and the second display unit (522) may each be provided to display different physical quantities. For instance, the first display unit (521) may display a physical quantity indicating the direction of energy (e.g., rotational direction of a motor (not shown), charge / discharge state of a battery, etc.), and the second display unit (522) may display a physical quantity indicating the magnitude of energy (e.g., rotational speed (RPM) of a motor (not shown), torque, state of charge (SOC) of a battery, voltage, current, etc.). Alternatively, the physical quantities displayed by the first display unit (521) and the second display unit (522) may be set to be opposite to each other, and are not limited thereto, but may display various physical quantities in combination according to the user's settings.

[0076] A communication unit (not shown) wirelessly transmits and receives data with a simulation module (100). In one example, the communication unit (not shown) uses a Bluetooth Low Energy (BLE) communication method and operates as a plurality of observers connected in a 1:N manner with a control unit (not shown) (Advertiser) of the simulation module (100). Through this, a single control unit (not shown) can simultaneously control multiple status display modules (500), making it possible to independently place and utilize each module on a trainee table, etc.

[0077] The fixing part (530) is provided on the rear of the case (501) and may be provided as a magnetic fixing part. This allows the status display module (500) to be detachably fixed to a magnetic surface, such as a driving module (200) or a power module (300), so that the driving state can be simulated near a real component or the position can be freely changed according to educational purposes.

[0078] The control unit (540) can be implemented as a touch panel positioned at the front bottom of the case (501). Through the control unit (540), the user can select the target (e.g., motor (not shown) or battery) to be displayed by the status display module (500) or change the display method.

[0079] According to the present invention, there is an advantage in maximizing educational effects through the organic combination of simulation and physical education. For example, the user can observe in real time how virtual driving conditions set through the simulation module (100) are physically implemented in the gear ratio variable module (400) and the drive unit module (200), and compare and analyze actual power data measured in the power supply unit module (300). Through this, the complex operating principles of the electric vehicle dynamometer can be understood integrally from both theoretical and practical perspectives.

[0080] In addition, according to the present invention, high educational scalability and space efficiency are provided through a modular configuration. Each function (simulation, drive, power, variable gear ratio, status display) is separated into independent modules, allowing only the necessary modules to be selectively configured or added depending on the educational purpose and environment. In particular, wheels (320) are provided on each module to facilitate movement and relocation, and the structure in which the power module (300) is housed under the drive module (200) reduces installation space and wiring complexity.

[0081] In addition, according to the present invention, visual teaching aids are utilized to facilitate the intuitive understanding of educational content. A status display module (500) visually displays abstract data, such as the rotational state of a motor (not shown) or the charge state of a battery, through a ring-shaped light source (525) display unit (520). In particular, it can be freely attached to any part of the educational equipment or individually placed on a student's table via wireless communication (BLE) and a magnetic fixing unit (530), thereby increasing the learner's concentration and enabling an intuitive understanding of complex energy flows.

[0082] In addition, according to the present invention, a safe and realistic practice environment is provided. The gear ratio variable module (400) adopts a toroidal CVT method instead of the transmission of an actual vehicle to simply and safely reproduce continuous gear ratio changes without complex gear meshing. Furthermore, since the load generation device using a magnetic brake precisely simulates various road conditions (slopes, load fluctuations, etc.) without mechanical friction, the user can safely experience and experiment with a driving environment similar to the real thing.

[0083] Although preferred embodiments of the present invention have been described above, the embodiments disclosed in the present invention are intended only to illustrate, not to limit, the technical scope of the present invention. Accordingly, the technical scope of the present invention includes not only each disclosed embodiment but also combinations of the disclosed embodiments, and furthermore, the scope of the technical scope of the present invention is not limited by such embodiments. In addition, a person skilled in the art to which the present invention pertains can make numerous changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications should be deemed to fall within the scope of the present invention as equivalents.

Claims

Claim 1 An electric vehicle educational device including a dynamometer simulation, comprising: a simulation module that receives driving conditions including a reduction gear ratio of an electric vehicle from a user, calculates the response of the dynamometer according to the driving conditions, and outputs a control signal according to the calculation result; a gear ratio variable module that receives the control signal from the simulation module and physically implements a virtual gear ratio change and load condition of the reduction gear of the electric vehicle by adjusting the roller inclination of a toroidal transmission unit by a step motor according to the control signal to vary the transmission ratio; a status display module that visually displays the status of the dynamometer based on data transmitted from the simulation module; a power supply module that provides a space for mounting a plurality of battery cells and supports battery-related diagnosis and practice of the electric vehicle; and a drive unit module that provides a space for mounting an actual drive system of the electric vehicle and is provided to house the power supply module. Claim 2 An electric vehicle training device according to claim 1, wherein the simulation module comprises: a display unit for displaying simulation data; a simulation unit including a simulation device and a communication device; an interface unit including a sliding touchscreen; a container unit for housing auxiliary parts; and a dynamometer simulation including a wheel provided at the bottom of the container unit. Claim 3 An electric vehicle educational device comprising a dynamometer simulation, wherein the status display module comprises: a case; a transparent lid that opens and closes the case; a display unit disposed within the case and visually displaying a physical quantity representing at least one of the directionality of energy or the magnitude of energy of the dynamometer of the electric vehicle based on data transmitted from the simulation module; a communication unit that wirelessly transmits and receives data with the simulation module; and a touch panel for selecting the physical quantity to be displayed. Claim 4 In paragraph 3, the electric vehicle educational device comprising a dynamometer simulation further comprising: a first display part and a second display part arranged to form concentric circles having different radii and having a plurality of light sources arranged along the circumferential direction; and a reflector provided below the light source to reflect light emitted from the light source. Claim 5 In paragraph 3, the electric vehicle educational device including a dynamometer simulation further comprises: a fixing part provided on the rear of the case and detachably attached to the surface of the drive unit module or the power unit module using magnetism. Claim 6 An electric vehicle educational device according to claim 1, wherein the gear ratio variable module comprises: a first motor connected to an input unit that generates rotational power by receiving a control signal from the simulation module; a power transmission unit that converts the rotational power transmitted from the input unit according to the gear ratio and transmits it to an output unit; a frame that forms the outer periphery of the power transmission unit and is provided in a form with a part open; a second motor including a load generating device connected to the output unit that generates rotational resistance; and a sensor unit that detects the state of the first motor and the second motor, and wherein the simulation module includes a dynamometer simulation that receives feedback data from the sensor unit, compares and analyzes the feedback data with the response calculation result of the dynamometer, and corrects the calculation formula of the simulation module based on the difference between the two. Claim 7 In claim 6, the power transmission unit comprises the toroidal transmission unit, the step motor, and a gear ratio control unit that varies the gear ratio of the toroidal transmission unit by adjusting the contact position or inclination of the roller in conjunction with the rotation of the step motor, and the toroidal transmission unit comprises a pair of opposing toroidal disks provided within the frame and a plurality of rollers interposed between the toroidal disks, and the step motor comprises a dynamometer simulation that rotates according to a control signal of the simulation module, an electric vehicle training device. Claim 8 An electric vehicle educational device according to claim 1, wherein the drive unit module comprises a plate unit on which the actual drive system is mounted and a leg unit including wheels for supporting the plate unit and for movement, and wherein the plate unit and the leg unit include a dynamometer simulation that defines a storage space in which the power unit module is housed. Claim 9 An electric vehicle educational device comprising a power supply module, wherein the power supply module includes: a storage unit accommodating a plurality of battery cells and a BMS; a cover formed of a transparent material to open and close the storage unit and to allow observation of the interior of the storage unit from the outside; and a dynamometer simulation for moving the storage unit.

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