Practical training platform for high-voltage system of new energy automobile

Abstract

The utility model provides a practical training platform for a high-voltage system of a new energy automobile, which belongs to the technical field of simulation teaching and practical training of the new energy automobile and comprises a supporting platform, a support for displaying information and the high-voltage system. The high-voltage system comprises an operation table, a battery box assembly and a driving assembly, the operation table is fixed to the table top of the supporting platform and controls starting and stopping, the driving assembly simulates the load of the electric vehicle, the operation table, the battery box assembly and the driving assembly are connected through wire harnesses, and the operation table controls the battery box assembly to supply power to the driving assembly. The new energy automobile high-voltage system practical training platform provided by the utility model can truly simulate the operation condition of a high-voltage system, and is helpful for improving the level and effect of new energy automobile education.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle simulation teaching and training, in particular to a training platform for the high-voltage system of new energy vehicles. Background Art

[0002] With the global emphasis on environmental protection and sustainable development, the new energy vehicle industry has risen rapidly and become an important direction for the development of the automotive industry. For new energy vehicles, especially pure electric vehicles and hybrid electric vehicles, their core technologies and safety performances have received extensive attention. To cope with the rapid development of the new energy vehicle industry, it is particularly important to strengthen the cultivation of skilled talents for new energy vehicles.

[0003] Currently, trainees are usually taught in a combination of theory and practice to enable them to master and be familiar with the system structure and operating principle of new energy vehicles. To ensure the safe operation of new energy vehicles, the design and maintenance of the high-voltage system have become key links. To enable trainees to have a more intuitive understanding of the high-voltage system of new energy vehicles, it is necessary to provide a tool for training and teaching the high-voltage system of new energy vehicles. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a training platform for the high-voltage system of new energy vehicles, which simulates the operation of the real high-voltage system of new energy vehicles indoors, enabling trainees to master the working principle of the high-voltage system of new energy vehicles faster and more deeply, and helping trainees understand the interrelationships between the components of the high-voltage system.

[0005] A training platform for the high-voltage system of new energy vehicles provided by the utility model includes a support platform, a bracket for displaying information, and a high-voltage system. The bracket is fixed on the tabletop of the support platform. The high-voltage system includes an operation console fixed on the tabletop of the support platform and used to control start and stop, a battery box assembly, and a drive component for simulating the load of an electric vehicle. The operation console, the battery box assembly, and the drive component are connected by wiring harnesses. The operation console controls the battery box assembly to supply power to the drive component.

[0006] As a further improvement of the utility model, the battery box assembly includes a power battery pack and a battery management controller connected to the power battery pack by a wiring harness. The battery management controller is connected to the drive component by a wiring harness.

[0007] As a further improvement of the utility model, the drive component includes a drive motor assembly and a motor controller for controlling the drive motor assembly. The motor controller is connected to the battery management controller by a wiring harness.

[0008] As a further improvement of the present utility model, the power battery pack and the battery management controller are located in a box fixed on the tabletop of the support platform, and the top of the box is closed by an upper cover.

[0009] As a further improvement of the present utility model, a safety maintenance switch for connecting or disconnecting adjacent modules of the power battery pack is fixed on the side plate of the box.

[0010] As a further improvement of the present utility model, the high-voltage system further includes a charging component capable of charging the power battery pack.

[0011] As a further improvement of the present utility model, the charging component includes an on-vehicle charger fixed on the tabletop of the support platform and an AC charging port connected to the on-vehicle charger by a wire harness. The on-vehicle charger is connected to the power battery by a wire harness, and the on-vehicle charger is used to convert the AC power input through the AC charging port into the high-voltage DC power required by the power battery pack.

[0012] As a further improvement of the present utility model, an information display screen connected to the battery management controller by a wire harness is fixed on the bracket.

[0013] As a further improvement of the present utility model, a detection panel is fixed on the bracket.

[0014] As a further improvement of the present utility model, a wire groove for restraining wire harnesses is fixed on the tabletop of the support platform.

[0015] By providing a training bench for the high-voltage system of a new energy vehicle, the present utility model uses a support platform to place the components of the new energy high-voltage system, truly simulates the operation of the high-voltage system, and centrally arranges the components of the high-voltage system on the tabletop of the support platform, enabling trainees to visually and clearly observe the components of the high-voltage system, understand the functions of the components, contributing to the development of new energy vehicle education and training, improving the professional qualities of industry practitioners, and contributing to the sustainable development of the new energy vehicle industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the training bench for the high-voltage system of a new energy vehicle according to an embodiment of the present utility model.

[0017] Figure 2 is a schematic layout diagram of the components of the training bench for the high-voltage system of a new energy vehicle according to an embodiment of the present utility model on the support platform.

[0018] Figure 3 is a schematic diagram of the detection panel of the training bench for the high-voltage system of a new energy vehicle according to an embodiment of the present utility model.

[0019] Figure 4 It is a schematic diagram of the connection relationship of some components of the new energy vehicle high-voltage system training bench according to an embodiment of the present utility model.

[0020] Explanation of reference numerals: 1, support platform; 2, bracket; 21, column; 22, cross beam; 221, identification area; 23, inner frame; 24, detection panel; 241, detection hole; 25, information display screen; 3, operation table; 31, emergency stop switch; 32, ignition switch; 4, battery box assembly; 41, power battery pack; 42, safety maintenance switch; 43, box body; 44, upper cover; 45, battery management controller; 5, charging component; 51, on-vehicle charger; 52, AC charging port; 6, drive component; 61, drive motor assembly; 62, motor controller; 63, accelerator pedal; 7, pre-charge resistor; 8, DC / DC converter; 9, wire groove. Specific embodiments

[0021] The following will combine specific embodiments and the attached Figures 1-4 to make a detailed description of the utility model, so that those skilled in the art can more fully understand the purpose, features and effects of the present utility model.

[0022] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those skilled in the art to which the present utility model belongs. When the definition of a term in the present utility model conflicts with the meaning commonly understood by those skilled in the art to which the present utility model belongs, the definition described in the present utility model shall prevail.

[0023] With the popularization of new energy electric vehicles, new demands for professional skills and knowledge have emerged. However, at present, there is still a shortage of talents in the new energy vehicle industry, and there are certain gaps in the early design, intermediate production and manufacturing links, as well as the later maintenance links. Conducting teaching on new energy vehicles can provide more talents for the industry development. Among them, training equipment, as an important tool for teaching and training, can play a very good role in promoting teaching.

[0024] The present utility model provides a new energy vehicle high-voltage system training bench, which simulates the operation status of the high-voltage system of a real new energy vehicle, enabling trainees and practitioners to carry out practical operations under safe and controllable conditions and deeply understand the working principle and maintenance skills of the new energy vehicle high-voltage system.

[0025] As a specific embodiment of the present utility model, this embodiment provides a new energy vehicle high-voltage system training bench, referring to Figure 1 、 Figure 2 , including a support platform 1, a bracket 2 and various components of the high-voltage system. The bracket 2 is fixed on the tabletop of the support platform 1.

[0026] Specifically, the bracket 2 is vertically arranged and fixedly connected to the support platform 1 at the bottom. The bracket 2 is close to the rear end of the support platform 1. In this embodiment, the bracket 2 includes columns 21 that are vertically arranged at relatively spaced intervals along the length direction of the support platform 1. Preferably, the columns 21 are square. At the top of the columns 21, there is a cross beam 22 that is fixedly connected to all the opposite columns 21 horizontally. Preferably, the cross beam 22 is square. The length of the cross beam 22 is greater than the distance between the opposite columns 21. On the front side of the cross beam 22, there is an identification area 221 for identifying the name of the training bench.

[0027] The cross beam 22 and the columns 21 form a stable frame. An inner frame 23 is arranged between the opposite columns 21, with both ends of the length direction fixedly connected to the inner side surfaces of the columns 21. A detection panel 24 and an information display screen 25 are fixed on the inner frame 23. The detection panel 24 is connected to each single battery pack and related key circuits through various wire harnesses. As shown in the detection panel 24 Figure 3 as shown, which includes a number of detection holes 241. The current and voltage parameters of the corresponding components can be detected through the detection holes 241.

[0028] Specifically, the high-voltage system includes an operation console 3 for controlling start and stop, a battery box assembly 4, a charging component 5, a driving component 6, a pre-charge resistor 7, and a DC / DC converter 8 that are fixed on the tabletop of the support platform 1. The components of the high-voltage system are connected by wire harnesses, and the connection lines simulate the connection lines of a real electric vehicle. Further, the wire harness connection relationship shown on the detection panel 24 can be adopted between the components of the high-voltage system. Figure 3 As shown on the detection panel 24.

[0029] Among them, the operation console 3 and the battery box assembly 4 are spaced along the length direction of the support platform 1. The operation console 3 includes an emergency stop switch 31 and an ignition switch 32. The emergency stop switch 31 can be used to simulate cutting off the power supply in an emergency state. The ignition switch 32 is used to control the start and stop of the entire system, and controls the system to work after being powered on by turning the key and stops working by disconnecting the circuit.

[0030] The battery box assembly 4 includes a box body 43 fixed on the tabletop of the support platform 1 and a power battery pack 41 and a battery management controller 45 located inside the box body 43. The power battery pack 41 is connected to the battery management controller 45 by a wire harness. The upper cover 44 is screwed to the box body 43 to seal the box body 43. The box body 43 and / or the upper cover 44 can be transparent, so as to facilitate observing the internal power battery pack 41 and battery management controller 45, especially the module structure of the power battery pack 41. Preferably, the upper cover 44 is a transparent acrylic cover.

[0031] Further, the power battery pack 41 includes at least two battery modules. A safety maintenance switch 42 is fixed on the side plate of the box body 43, and the safety maintenance switch 42 is respectively connected to two adjacent modules of the power battery pack 41. Combining Figure 3 , the safety maintenance switch 42 is used to connect or disconnect the connection between battery module 2 and battery module 3.

[0032] The battery management controller (BMS) is an important part of the electric vehicle system. In this training bench, an integrated battery management controller designed specifically for medium and low-speed vehicles is adopted, with an IP54 protection level, suitable for lithium battery pack management of ternary lithium, lithium iron phosphate, lithium manganate, etc. with a single-cell voltage in the range of 0 - 5V. The BMS has precise battery state monitoring, balancing control, thermal management, and safety protection functions to ensure the safety and efficiency of the battery pack during the charging and discharging process.

[0033] Further, in this embodiment, the power battery pack 41 uses lithium iron phosphate batteries, with a single-cell rated voltage of 3.2V and a charging cut-off voltage of 3.6V - 3.65V. Lithium iron phosphate batteries have the advantages of high working voltage, large energy density, long cycle life, good safety performance, small self-discharge rate, and no memory effect. In this embodiment, the power battery pack 41 is composed of 24 single cells connected in series, with a total voltage of 76.8V.

[0034] The charging component 5 includes an on-vehicle charger 51 fixed on the tabletop of the support platform 1 and an AC charging port 52 fixed on the operation table 3. The on-vehicle charger 51 and the AC charging port 52 are connected by a wire harness, and the on-vehicle charger 51 is connected to the power battery pack 41 by a wire harness. The on-vehicle charger 51 plays the role of converting AC to DC, converting AC into the high-voltage DC required by the power battery pack 41 for easy charging. Through the charging component 5, the charging process of an electric vehicle using AC is simulated.

[0035] The drive component 6 is used to simulate the load of an electric vehicle, including a drive motor assembly 61 fixed on the tabletop of the support platform 1 and a motor controller 62 for controlling the drive motor assembly 61. The drive motor assembly 61 includes a drive motor. The motor controller 62 realizes precise control of the drive motor by controlling parameters such as the current and voltage of the drive motor. The drive motor assembly 61 is connected to the motor controller 62 by a wire harness, and the motor controller 62 is connected to the battery management controller 45 by a wire harness. The motor controller 62 converts the high-voltage DC of the power battery pack 41 into high-voltage three-phase AC of the drive motor, causing the drive motor to generate torque.

[0036] Further, the drive component 6 also includes an accelerator pedal 63 connected to the motor controller 62 by a wire harness and fixed on the tabletop of the support platform 1. The accelerator pedal 63 is located between the operation table 3 and the battery box assembly 4 and is close to the front end of the support platform 1.

[0037] The drive motor assembly 61 is controlled by the motor controller 62 to simulate the acceleration and deceleration of the vehicle.

[0038] The pre-charge resistor 7 is used to limit the current and ensure the safety of the circuit. The pre-charge resistor 7 is connected to the positive wire harness of the power battery pack 41.

[0039] The DC / DC converter 8 is a voltage conversion device. The DC / DC converter 8 is connected to the wire harness of the power battery pack 41, and reduces the high-voltage direct current output by the power battery pack 41 to a constant low voltage to supply power to the low-voltage components, simulating the conversion of high-voltage direct current to low-voltage direct current in an electric vehicle to provide power support for all the low-voltage devices of the vehicle.

[0040] Further, the wire harness is constrained by the wire groove 9 fixed on the tabletop of the support platform 1 on the tabletop of the support platform 1. To make the tabletop of the support platform 1 cleaner and avoid the wire harness being scattered on the tabletop of the support platform 1, the wire harness connecting each component is centralized by setting the wire groove 9. Specifically, in this embodiment, the number of the wire grooves 9 is three, two of the wire grooves 9 are arranged along the length direction of the support platform 1, and the other wire groove 9 is arranged along the width direction of the support platform 1. The drive motor assembly 61, the motor controller 62, the on-vehicle charger 51, the pre-charge resistor 7 and the DC / DC converter 8 are located between two parallel wire grooves 9. Preferably, heat dissipation holes are formed in the side plates of the wire groove 9 at intervals along the length direction.

[0041] Referring to Figure 3 、 Figure 4 , the battery management controller 45 is respectively connected to the power battery pack 41, the motor controller 62 and the information display screen 25 by wire harnesses. Preferably, the information display screen 25 is an LCD display screen. The information display screen 25 is used to display parameters such as the temperature and voltage of the power battery pack 41. The battery management controller 45 is also connected to the detection panel 24 by a wire harness.

[0042] The ignition switch 32 is connected to the positive pole of the power battery pack 41 and the motor controller 62 by a wire harness. After rotating the key to turn on the power supply of the motor controller 62, the system starts to work.

[0043] When training, first turn on the safety maintenance switch 42 to connect 2 of the battery modules of the power battery pack 41 connected to the safety maintenance switch 42, then turn on the emergency stop switch 31, and turn on the ignition switch 32 to connect the circuit, and the total voltage, total current and single-cell voltage of the power battery pack 41 can be displayed on the information display screen 25.

[0044] Manually press the accelerator pedal 63 to simulate the acceleration of the electric vehicle. Under the action of the motor controller 62, the drive motor of the drive motor assembly 61 rotates. According to the pressing amplitude of the accelerator pedal 63, the drive motor obtains different rotation speeds.

[0045] When turning off the high-voltage training bench, first turn off the ignition switch 32, and then disconnect the emergency stop switch 31.

[0046] All the main components of the high-voltage system used in the present utility model are available in the prior art, and the structures of the components of the high-voltage system are not improved, such as the power battery pack 41, the safety maintenance switch 42, the battery management controller 45, the on-vehicle charger 51, the AC charging port 52, the drive motor assembly 61, the motor controller 62, the accelerator pedal 63, the pre-charge resistor 7, and the DC / DC converter 8. Therefore, the technical solutions of the present utility model have been clearly and completely disclosed in the above embodiments, and those skilled in the art can implement the technical solutions according to the content disclosed in the present utility model.

[0047] By using the high-voltage training bench of the utility model for learning and practice, trainees can comprehensively master the knowledge and skills of the new energy vehicle high-voltage system, laying a solid foundation for future work related to new energy vehicles.

[0048] The above are only the preferred embodiments of the present utility model, and do not limit the present utility model in any other form. Any modification or equivalent change made according to the technical essence of the present utility model still belongs to the scope protected by the present utility model.

Claims

1. A training bench for the high-voltage system of a new energy vehicle, comprising a support platform (1), a bracket (2) for displaying information, and a high-voltage system, characterized in that, The bracket (2) is fixed on the tabletop of the support platform (1). The high-voltage system includes an operation console (3) fixed on the tabletop of the support platform (1) and controlling start and stop, a battery box assembly (4), a charging component (5), and a driving component (6) simulating the load of an electric vehicle. The operation console (3), the battery box assembly (4), the charging component (5), and the driving component (6) are connected by wire harnesses. The operation console (3) controls the battery box assembly (4) to supply power to the driving component (6). The battery box assembly (4) includes a power battery pack (41), and the power battery pack (41) is charged through the charging component (5). The operation console (3) is close to the front end of the support platform (1). The bracket (2) is vertically arranged and its bottom is fixedly connected to the support platform (1). The bracket (2) is close to the rear end of the support platform (1). The bracket (2) includes square columns (21) arranged vertically and spaced relatively at intervals along the length direction of the support platform (1). At the top of the columns (21), a cross beam (22) fixedly connected to the opposite columns (21) is horizontally arranged. The length of the cross beam (22) is greater than the distance between the opposite columns (21). The cross beam (22) and the columns (21) form a stable frame body. A marking area (221) is arranged on the front side of the cross beam (22) for marking the name of the training bench.

2. The training bench for the high-voltage system of a new energy vehicle according to claim 1, wherein, The battery box assembly (4) further includes a battery management controller (45) wire harness-connected to the power battery pack (41). The battery management controller (45) is wire harness-connected to the driving component (6). The power battery pack (41) and the battery management controller (45) are located in a box body (43) fixed on the tabletop of the support platform (1). The top of the box body (43) is closed by an upper cover (44). The box body (43) and / or the upper cover (44) is transparent.

3. The training bench for the high-voltage system of a new energy vehicle according to claim 2, characterized in that, The upper cover (44) is a transparent acrylic cover.

4. The new energy vehicle high-voltage system training bench according to claim 3, wherein The driving component (6) is used to simulate the load of an electric vehicle and includes a driving motor assembly (61) fixed on the tabletop of the support platform (1) and a motor controller (62) for controlling the driving motor assembly (61). The driving motor assembly (61) includes a driving motor. The driving motor assembly (61) is wire harness-connected to the motor controller (62). The motor controller (62) is wire harness-connected to the battery management controller (45). The motor controller (62) converts the high-voltage direct current of the power battery pack (41) into high-voltage three-phase alternating current of the driving motor, so that the driving motor generates torque. The driving component (6) further includes an accelerator pedal (63) wire harness-connected to the motor controller (62) and fixed on the tabletop of the support platform (1). The accelerator pedal (63) is located between the operation console (3) and the battery box assembly (4) and close to the front end of the support platform (1). According to the pressing amplitude of the accelerator pedal (63), the driving motor obtains different speeds. The driving motor assembly (61) is controlled by the motor controller (62) to simulate the acceleration and deceleration of the vehicle.

5. The new energy vehicle high-voltage system training bench according to claim 4, characterized in that, The power battery pack (41) includes at least two battery modules, and a safety maintenance switch (42) for connecting or disconnecting adjacent modules of the power battery pack (41) is fixed on the side plate of the box body (43).

6. The new energy vehicle high-voltage system training bench according to claim 5, characterized in that, The operation console (3) and the battery box assembly (4) are spaced along the length direction of the support platform (1). The operation console (3) includes an emergency stop switch (31) and an ignition switch (32). The emergency stop switch (31) can be used to cut off the power supply in an emergency state, and the ignition switch (32) is used to control the start and stop of the entire system. The system is powered on and works by turning the key, and the circuit is disconnected to stop working.

7. The training bench for the high-voltage system of a new energy vehicle according to claim 6, characterized in that, The charging component (5) includes an on-vehicle charger (51) fixed on the tabletop of the support platform (1) and an AC charging port (52) wire harness-connected to the on-vehicle charger (51). The AC charging port (52) is located on the operation console (3). The on-vehicle charger (51) is wire harness-connected to the power battery pack (41), and the on-vehicle charger (51) is used to convert the AC power input through the AC charging port (52) into the high-voltage DC power required by the power battery pack (41).

8. The training bench for the high-voltage system of a new energy vehicle according to claim 7, wherein A pre-charge resistor (7) and a DC / DC converter (8) are fixed on the tabletop of the support platform (1). The pre-charge resistor (7) is wire harness-connected to the positive electrode of the power battery pack (41) and is used to limit the current. The DC / DC converter (8) is wire harness-connected to the power battery pack (41), and reduces the high-voltage DC power output by the power battery pack (41) to a constant low voltage to supply power to low-voltage components, simulating the conversion of high-voltage DC power to low-voltage DC power in an electric vehicle to provide power support for the whole vehicle's low-voltage equipment.

9. The training bench for the high-voltage system of a new energy vehicle according to claim 8, characterized in that, An inner frame (23) is arranged between the opposite columns (21) of the bracket (2), and the two ends of the inner frame (23) in the length direction are respectively fixedly connected to the inner side surfaces of the columns (21). A detection panel (24) and an information display screen (25) wire harness-connected to the battery management controller (45) are fixed on the inner frame (23). The detection panel (24) includes a number of detection holes (241). The information display screen (25) is an LCD display screen, and the information display screen (25) is used to display the temperature and voltage parameters of the power battery pack (41).

10. The training bench for the high-voltage system of a new energy vehicle according to claim 9, characterized in that, A wire groove (9) for restraining wire harnesses is fixed on the tabletop of the support platform (1). The number of wire grooves (9) is three. Two of the wire grooves (9) are arranged along the length direction of the support platform (1), and the other wire groove (9) is arranged along the width direction of the support platform (1). The drive motor assembly (61), the motor controller (62), the on-vehicle charger (51), the pre-charge resistor (7) and the DC / DC converter (8) are located between two parallel wire grooves (9). Heat dissipation holes are provided at intervals along the length direction on the side plates of the wire groove (9).

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