Stable power supply device for truck-mounted terminal of container truck

Abstract

The utility model belongs to the technical field of container truck power supply, and discloses a container truck vehicle-mounted terminal stable power supply device which is arranged in a container truck and comprises a device shell, a power supply control mainboard and a standby power supply. A man-machine interaction unit is arranged at the top end of the device shell, an access door is arranged at the bottom end of the device shell, the power supply control mainboard and the standby power supply are located in the device shell, and the power supply control mainboard is electrically connected with the man-machine interaction unit, the standby power supply, a power supply system of the container truck, a control system and a vehicle-mounted terminal. According to the utility model, the problems of complex structure, unstable power supply and difficult maintenance in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of truck power supply, specifically relates to a truck vehicle terminal stable power supply device. BACKGROUND

[0002] Truck, full name for container truck, is a kind of truck specially used for transporting container in wharf site.With the rapid development of logistics industry in wharf site, due to the informatization development of wharf site truck operation, the vehicle terminal equipment of receiving operation instruction is installed, and the stable power supply of vehicle terminal becomes the key to guarantee transportation efficiency and safety.However, the power supply device of truck vehicle terminal in prior art has problems such as complex structure, high failure rate and difficult maintenance, which cannot meet the efficient and stable demand of modern logistics industry. CONTENT OF UTILITY MODEL

[0003] In order to solve the problems of complex structure, unstable power supply and difficult maintenance existing in prior art, a kind of truck vehicle terminal stable power supply device is provided.

[0004] The technical scheme adopted by the utility model is:

[0005] A kind of truck vehicle terminal stable power supply device, truck vehicle terminal stable power supply device is arranged in the inside of truck, and truck vehicle terminal stable power supply device includes device shell, power supply control mainboard and standby power supply, the top of device shell is provided with man-machine interaction unit, and the bottom of device shell is provided with access door, power supply control mainboard and standby power supply are located in the inside of device shell, and power supply control mainboard is electrically connected with man-machine interaction unit, standby power supply and the power supply system, control system and vehicle terminal of truck respectively.

[0006] Further, the inside of device shell is provided with first fixed groove and second fixed groove, the side of first device shell is provided with first cable hole, and the top of device shell is provided with second cable hole, power supply control mainboard is arranged in the inside of first fixed groove, the first cable of power supply control mainboard is electrically connected with the power supply system, control system and vehicle terminal of truck outside device shell through first cable hole, and the second cable of power supply control mainboard is electrically connected with man-machine interaction unit outside device shell through second cable hole, and standby power supply is arranged in the inside of second fixed groove.

[0007] Further, power supply control mainboard includes substrate, input connector located on one side of substrate, output connector located on the other side of substrate, and main control module, electric signal detection module, charging module, voltage stabilizing module, protection module, power supply control module and power management module arranged on one end of substrate;

[0008] The input end of the master control module is electrically connected with the output end of the man-machine interaction unit, the output end of the control system of the truck, the output end of the electric signal detection module and the output end of the power management module respectively, and the output end of the master control module is electrically connected with the input end of the man-machine interaction unit, the control end of the power supply control module and the input end of the power management module respectively, the output end of the power management module is electrically connected with the control end of the charging module and the control end of the voltage stabilizing module respectively, the output end of the voltage stabilizing module is electrically connected with the input end of the power supply control module, and the input end of the voltage stabilizing module is electrically connected with the output end of the charging module, the input end of the power supply control module is electrically connected with the output end of the backup power supply, the output end of the power supply control module is electrically connected with the input end of the backup power supply, and the output end of the power supply control module is electrically connected with the input end of the output connector through the protection module in series.

[0009] The output end of the output connector is electrically connected with the input end of the vehicle terminal of the truck, the input end of the charging module is electrically connected with the output end of the input connector, the input end of the input connector is electrically connected with the output end of the power supply system of the truck, and the detection end of the electric signal detection module is connected between the output end of the power supply control module and the input end of the output connector in series.

[0010] Further, the first cable is internally provided with a first signal line, a first power line and a second power line, the input end of the master control module is electrically connected with the output end of the control system of the truck through the first signal line, the output end of the output connector is electrically connected with the input end of the vehicle terminal of the truck through the first power line, and the input end of the input connector is electrically connected with the output end of the power supply system of the truck through the second power line.

[0011] The second cable is provided with a second signal line, a third signal line and a third power line, the output end of the master control module is electrically connected with the input end of the man-machine interaction unit through the second signal line, the input end of the master control module is electrically connected with the output end of the man-machine interaction unit through the third signal line, and the power supply end of the master control module is electrically connected with the power supply end of the man-machine interaction unit through the third power line.

[0012] Further, the power supply control module comprises an external power supply control circuit, an external power charging control circuit and a backup power control circuit, the control end of the external power supply control circuit, the control end of the external power charging control circuit and the control end of the backup power control circuit are electrically connected with the output end of the master control module.

[0013] The input end of the external power supply control circuit is electrically connected with the output end of the voltage stabilizing module, and the output end of the external power supply control circuit is electrically connected with the input end of the output connector through the protection module in series.

[0014] The input end of the external power supply charging control circuit is electrically connected with the output end of the voltage stabilizing module, and the output end of the external power supply charging control circuit is electrically connected with the input end of the backup power supply.

[0015] The input end of the backup power supply control circuit is electrically connected with the output end of the backup power supply, and the output end of the backup power supply control circuit is electrically connected with the input end of the output connector through the protection module in series.

[0016] Further, the external power supply control circuit is provided with a first electric switch and a first electric switch driver, the output end of the first electric switch driver is electrically connected with the control end of the first electric switch, the control end of the first electric switch driver is electrically connected with the output end of the main control module, the input end of the first electric switch is electrically connected with the output end of the voltage stabilizing module, and the output end of the first electric switch is electrically connected with the input end of the output connector through the protection module in series.

[0017] The external power supply charging control circuit is provided with a second electric switch and a second electric switch driver, the output end of the second electric switch driver is electrically connected with the control end of the second electric switch, the control end of the second electric switch driver is electrically connected with the output end of the main control module, the input end of the second electric switch is electrically connected with the output end of the voltage stabilizing module, and the output end of the second electric switch is electrically connected with the input end of the backup power supply.

[0018] The backup power supply control circuit is provided with a third electric switch and a third electric switch driver, the output end of the third electric switch driver is electrically connected with the control end of the third electric switch, the control end of the third electric switch driver is electrically connected with the output end of the main control module, the input end of the third electric switch is electrically connected with the output end of the backup power supply, and the output end of the third electric switch is electrically connected with the input end of the output connector through the protection module in series.

[0019] Further, the man-machine interaction unit includes a display screen module and a key module, the input end of the display screen module is electrically connected with the output end of the main control module through the second signal line, the power supply end of the display screen module is electrically connected with the power supply end of the main control module through the third power supply line, the output end of the key module is electrically connected with the input end of the main control module through the third signal line, and the display screen module and the key module are arranged at the top end of the shell.

[0020] Further, the protection module includes a first protection module and a second protection module in parallel, the first protection module is connected in series between the output end of the external power supply control circuit and the input end of the output connector, and the second protection module is connected in series between the output end of the backup power supply control circuit and the input end of the output connector.

[0021] Further, the first protection module comprises a first overvoltage protection circuit, a first overcurrent protection circuit and a first fuse connected in series.

[0022] The second protection module comprises a second overvoltage protection circuit, a second overcurrent protection circuit and a second fuse connected in series.

[0023] Further, the electric signal detection module comprises a first electric signal detection module and a second electric signal detection module.

[0024] The first electric signal detection module comprises a first voltage transformer and a first current transformer, the first voltage transformer is connected in parallel between the output end of the first fuse and the ground, and the first current transformer is connected in series between the first overcurrent protection circuit and the first fuse.

[0025] The second electric signal detection module comprises a second voltage transformer and a second current transformer, the second voltage transformer is connected in parallel between the output end of the second fuse and the ground, and the second current transformer is connected in series between the second overcurrent protection circuit and the second fuse.

[0026] The utility model discloses a beneficial effect is:

[0027] The utility model provides a truck vehicle terminal stable power supply device, device design is simple, and it is convenient to install and maintain, and effective reduction manufacturing and maintenance cost, the continuity and stability of power supply are ensured to main spare power mechanism, overvoltage, overcurrent protection function such as, guarantee power supply safety, the stability and reliability of power supply have been improved significantly, the setting of man -machine interface unit makes operation more intuitive and convenient, improves user experience, the access door of device shell bottom end is convenient for daily maintenance and repair work, and maintenance difficulty is reduced.

[0028] The other beneficial effects of the utility model will be further explained in the specific embodiment. DRAWINGS

[0029] Figure 1 It is the structure side cross section of truck vehicle terminal stable power supply device.

[0030] Figure 2 It is the structure overhead view of truck vehicle terminal stable power supply device.

[0031] Figure 3 It is the structure schematic view of power supply control mainboard.

[0032] In the drawing, 1, device shell, 2, power supply control mainboard, 3, spare power, 4, man -machine interface unit, 5, access door, 6, base plate, 7, input connector, 8, output connector, 9, main control module, 10, electric signal detection module, 11, charging module, 12, voltage stabilizing module, 13, protection module, 14, power supply control module, 15, power management module. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example:

[0035] like Figure 1 and Figure 2 As shown in the figure, this embodiment provides a stable power supply device for a container truck on-board terminal. The stable power supply device for a container truck on-board terminal is installed inside the container truck and includes a device housing 1, a power supply control main board 2, and a backup power supply 3. A human-machine interaction unit 4 is provided at the top of the device housing 1, and an inspection door 5 is provided at the bottom of the device housing 1. The power supply control main board 2 and the backup power supply 3 are located inside the device housing 1, and the power supply control main board 2 is electrically connected to the human-machine interaction unit 4, the backup power supply 3, and the power supply system, control system, and on-board terminal of the container truck.

[0036] The device shell 1 provides a closed environment to protect the internal components from the external environment, fix and support the internal components, ensure stable operation, enhance the mechanical strength and protection performance of the device, prolong the service life, facilitate overall installation and maintenance, and improve the use convenience; the man-machine interaction unit 4 is used to display the power supply state, the backup power supply 3 battery capacity, fault information, etc., provide an intuitive operation interface, receive user input, realize manual control and management, improve the user experience, make the operation more simple and intuitive, and facilitate the user to monitor the power supply state in real time and timely discover and handle problems; the access door 5 is used to provide a convenient access channel for maintenance and replacement of internal components, greatly shorten the maintenance time, improve the maintenance efficiency, reduce the maintenance cost, enhance the practicality and economy of the device; the power supply control mainboard 2 receives and processes control signals from the control system of the truck, collects the power of the power supply system of the truck, converts it into a voltage level that can be used by the vehicle terminal, provides continuous and stable power supply for the vehicle terminal, controls the charging and discharging of the backup power supply 3, ensures the continuity and stability of the power supply, realizes overvoltage, overcurrent and other protection functions, ensures the safety of power supply, significantly improves the stability and reliability of power supply, reduces the failure rate, ensures the continuous operation of the vehicle terminal, and improves the transportation efficiency and safety performance; the backup power supply 3 provides backup power supply for the vehicle terminal when the power supply system of the truck fails or the voltage is unstable, ensures the normal operation of the vehicle terminal in extreme conditions, enhances the fault tolerance of the system, improves the redundancy of the power supply, and further ensures the transportation safety.

[0037] As preferred, the inside of the device shell 1 is provided with a first fixing groove and a second fixing groove, one side of the first device shell 1 is provided with a first cable hole, and the top end of the device shell 1 is provided with a second cable hole, the power supply control mainboard 2 is arranged in the first fixing groove, the first cable of the power supply control mainboard 2 is electrically connected with the power supply system, the control system and the vehicle terminal outside the device shell 1 through the first cable hole, and the second cable of the power supply control mainboard 2 is electrically connected with the man-machine interaction unit 4 outside the device shell through the second cable hole, and the backup power supply 3 is arranged in the second fixing groove.

[0038] The first fixing groove is used for fixing the power supply control mainboard 2 to ensure that it is stable and does not move, and the second fixing groove is used for fixing the backup power supply 3 to prevent it from moving during the operation of the vehicle, thereby improving the stability of the internal components, reducing the failure caused by vibration or impact, facilitating the quick replacement and maintenance of the components, and improving the maintenance efficiency; the first cable hole allows the first cable of the power supply control mainboard 2 to pass through and be electrically connected with the power supply system, the control system and the vehicle terminal of the truck, and the second cable hole allows the second cable of the power supply control mainboard 2 to pass through and be electrically connected with the external human-computer interaction unit 4, thereby realizing the orderly connection between the internal components and the external system, avoiding the disorder of the cables, facilitating the wiring and maintenance of the cables, and reducing the risk of cable damage.

[0039] As preferred, as shown in Figure 3 The power supply control mainboard 2 comprises a substrate 6, an input connector 7 located on one side of the substrate 6, an output connector 8 located on the other side of the substrate 6, and a main control module 9, an electric signal detection module 10, a charging module 11, a voltage stabilizing module 12, a protection module 13, a power supply control module 14 and a power management module 15 arranged at one end of the substrate 6;

[0040] The input end of the main control module 9 is electrically connected with the output end of the human-computer interaction unit 4, the output end of the control system of the truck, the output end of the electric signal detection module 10 and the output end of the power management module 15, and the output end of the main control module 9 is electrically connected with the input end of the human-computer interaction unit 4, the control end of the power supply control module 14 and the input end of the power management module 15, the output end of the power management module 15 is electrically connected with the control end of the charging module 11 and the control end of the voltage stabilizing module 12, the output end of the voltage stabilizing module 12 is electrically connected with the input end of the power supply control module 14, and the input end of the voltage stabilizing module 12 is electrically connected with the output end of the charging module 11, the input end of the power supply control module 14 is electrically connected with the output end of the backup power supply 3, the output end of the power supply control module 14 is electrically connected with the input end of the backup power supply 3, and the output end of the power supply control module 14 is electrically connected with the input end of the output connector 8 through the protection module 13 in series;

[0041] The output end of the output connector 8 is electrically connected with the input end of the vehicle terminal of the truck, the input end of the charging module 11 is electrically connected with the output end of the input connector 7, the input end of the input connector 7 is electrically connected with the output end of the power supply system of the truck, and the detection end of the electric signal detection module 10 is connected in series between the output end of the power supply control module 14 and the input end of the output connector 8.

[0042] The substrate 6 serves as the basic platform of the power supply control mainboard 2, carries and connects all electronic components and modules, provides stable structural support, ensures reliable electrical connection between modules, and facilitates overall assembly and maintenance; the input connector 7 receives power input from the truck power supply system and control signal input of the control system, and the output connector 8 outputs the processed stable power to the vehicle terminal, realizing fast and reliable connection with external systems, facilitating installation and replacement; the main control module 9 receives and processes signals from the human-computer interaction unit 4, the truck control system, the electric signal detection module 10 and the power management module 15, and issues control instructions, realizing intelligent control of the entire power supply system and improving the response speed and accuracy of the system; the detection power supply control module 14 outputs electrical signals such as voltage and current, and feeds back the detection information to the main control module 9, which monitors the power supply state in real time and provides protection basis for the system to prevent overvoltage, overcurrent and other faults; the charging module 11 uses the truck power supply system to charge the backup power supply 3, ensuring that the backup power supply 3 is always in good condition, prolonging the service life of the backup power supply 3, and ensuring that backup power supply can be provided in time when the main power supply fails; the voltage stabilizing module 12 stabilizes the input power and outputs stable voltage to the power supply control module 14, ensuring the stability of the power supply of the vehicle terminal and avoiding equipment damage caused by voltage fluctuation; the protection module 13 protects the power output to the vehicle terminal from overvoltage, overcurrent, short circuit and other faults, enhances the safety of the system, and prevents equipment damage or personal injury caused by power failure; the power supply control module 14 controls the output and input of the backup power supply 3 according to the instructions of the main control module 9, controls the voltage stabilizing module 12 to output stable voltage to the vehicle terminal, realizes the switching of main and backup power supply, and controls the voltage stabilizing module 12 to output stable voltage to the backup power supply 3 for charging, ensuring the continuity of power supply and improving the fault tolerance of the device; the power management module 15 manages the power distribution and energy conversion of the entire device, provides power state information to the main control module 9, optimizes energy utilization efficiency, and realizes intelligent management of power supply.

[0043] As preferred, the first cable is internally provided with a first signal line, a first power line and a second power line, the input end of the main control module 9 is electrically connected with the output end of the control system of the truck through the first signal line, the output end of the output connector 8 is electrically connected with the input end of the vehicle terminal of the truck through the first power line, and the input end of the input connector 7 is electrically connected with the output end of the power supply system of the truck through the second power line;

[0044] The second cable is provided with a second signal line, a third signal line and a third power line, the output end of the master control module 9 is electrically connected with the input end of the man-machine interaction unit 4 through the second signal line, the input end of the master control module 9 is electrically connected with the output end of the man-machine interaction unit 4 through the third signal line, and the power supply end of the master control module 9 is electrically connected with the power supply end of the man-machine interaction unit 4 through the third power line.

[0045] The first signal line transmits the control signal between the control system of the truck and the master control module 9, the first power line realizes stable power supply of the device to the vehicle terminal, the second power line realizes access of the power supply system of the truck, the signal and the power are separated, the signal interference is reduced, the stability of signal transmission is improved, the stable supply of power is ensured, and voltage fluctuation caused by multi-use is avoided.

[0046] The second signal line transmits the output signal between the master control module 9 and the man-machine interaction unit 4, the third signal line transmits the input signal between the man-machine interaction unit 4 and the master control module 9, and the third power line provides power for the man-machine interaction unit 4. The two-way signal transmission realizes real-time and bidirectional communication between the master control module 9 and the man-machine interaction unit 4, independent power supply, and ensures stable operation of the man-machine interaction unit 4 and is not affected by power fluctuation of other modules.

[0047] The cable design and connection mode further optimize the performance of the stable power supply device of the truck terminal of the truck, the signal line and the power line are separated, the interference is reduced, the stability of signal transmission and the reliability of power supply are improved, at the same time, the design of the special line ensures that each module obtains stable and independent power supply, and these improvements jointly improve the overall performance of the device, and provide more stable and reliable power guarantee for the normal operation of the truck.

[0048] As preferred, the power supply control module 14 includes an external power supply control circuit, an external power charging control circuit and a backup power control circuit, the control end of the external power supply control circuit, the control end of the external power charging control circuit and the control end of the backup power control circuit are electrically connected with the output end of the master control module 9;

[0049] The input end of the external power supply control circuit is electrically connected with the output end of the voltage stabilizing module 12, and the output end of the external power supply control circuit is electrically connected with the input end of the output connector 8 through the protection module 13 in series;

[0050] The input end of the external power charging control circuit is electrically connected with the output end of the voltage stabilizing module 12, and the output end of the external power charging control circuit is electrically connected with the input end of the backup power 3;

[0051] The input end of the backup power supply control circuit is electrically connected with the output end of the backup power supply 3, and the output end of the backup power supply control circuit is electrically connected with the input end of the output connector 8 through the protection module 13 in series.

[0052] The external power supply control circuit controls the working power supply from the power supply system of the truck tractor to the vehicle terminal, controls the opening and closing of the external power supply control circuit according to the instruction of the main control module 9, realizes the connection and disconnection of the external power supply, the external power supply charging control circuit controls the charging power supply from the power supply system of the truck tractor to the backup power supply 3, controls the opening and closing of the external power supply charging control circuit according to the instruction of the main control module 9, realizes the connection and disconnection of the external power supply charging, the backup power supply control circuit controls the working power supply from the backup power supply 3 to the vehicle terminal, controls the opening and closing of the backup power supply control circuit according to the instruction of the main control module 9, realizes the connection and disconnection of the backup power supply 3, the power supply control module 14 realizes the stable, safe and intelligent power supply of the truck tractor vehicle terminal through the cooperative work of the external power supply control circuit, the external power supply charging control circuit and the backup power supply control circuit, the functions of each module are clear, and they cooperate with each other to jointly ensure the continuity, stability and safety of the power supply, the effective integration of these designs and functions greatly improves the performance of the truck tractor vehicle terminal stable power supply device, and meets the high requirements of modern logistics on the power supply system.

[0053] As preferred, the external power supply control circuit is provided with a first electric switch and a first electric switch driver, the output end of the first electric switch driver is electrically connected with the control end of the first electric switch, the control end of the first electric switch driver is electrically connected with the output end of the main control module 9, the input end of the first electric switch is electrically connected with the output end of the voltage stabilizing module 12, and the output end of the first electric switch is electrically connected with the input end of the output connector 8 through the protection module 13 in series;

[0054] The external power supply charging control circuit is provided with a second electric switch and a second electric switch driver, the output end of the second electric switch driver is electrically connected with the control end of the second electric switch, the control end of the second electric switch driver is electrically connected with the output end of the main control module 9, the input end of the second electric switch is electrically connected with the output end of the voltage stabilizing module 12, and the output end of the second electric switch is electrically connected with the input end of the backup power supply 3;

[0055] The backup power supply control circuit is provided with a third electric switch and a third electric switch driver, the output end of the third electric switch driver is electrically connected with the control end of the third electric switch, the control end of the third electric switch driver is electrically connected with the output end of the main control module 9, the input end of the third electric switch is electrically connected with the output end of the backup power supply 3, and the output end of the third electric switch is electrically connected with the input end of the output connector 8 through the protection module 13 in series.

[0056] The first electric switch controls the power path from the voltage stabilizing module 12 to the output connector 8, i.e., the truck-mounted terminal. The first electric switch driver receives the instructions from the master control module 9 and drives the opening or closing of the first electric switch. The rapid and accurate on-off of the power is realized through the electric switch. In response to the instructions from the master control module 9, the connection and disconnection of the external power supply are realized. In abnormal situations, the power supply can be quickly cut off to effectively isolate the fault and protect the subsequent circuit. The second electric switch controls the charging path from the voltage stabilizing module 12 to the backup power supply 3. The second electric switch driver controls the opening or closing of the second electric switch according to the instructions from the master control module 9 to adjust the charging process. Through the control of the electric switch, intelligent charging of the backup power supply 3 is realized to avoid overcharging or undercharging. When an abnormal charging is detected, the charging path can be immediately cut off to ensure the safety of the charging. The third electric switch controls the power path from the backup power supply 3 to the output connector 8, i.e., the truck-mounted terminal. The third electric switch driver receives the instructions from the master control module 9 and drives the opening or closing of the third electric switch. In the event of a failure of the main power supply, the seamless connection of the backup power supply 3 is realized through the rapid response of the electric switch to ensure the continuity of the power supply. The output of the backup power supply 3 is independently controllable, and the power supply strategy can be flexibly adjusted as needed. The introduction of the electric switch and the driver module provides a more flexible, accurate and safe power control method for the truck-mounted terminal stable power supply device. Each electric switch cooperates with its driver to realize independent and intelligent control of the respective circuit. The addition of these modules not only improves the stability and reliability of the power supply system, but also enhances the fault response capability and safety of the system. Overall, these improvements enable the truck-mounted terminal stable power supply device to better meet the high standard requirements of modern logistics for the power supply system.

[0057] As a preferred, the man-machine interaction unit 4 includes a display screen module and a key module. The input end of the display screen module is electrically connected with the output end of the master control module 9 through the second signal line, and the power supply end of the display screen module is electrically connected with the power supply end of the master control module 9 through the third power supply line. The output end of the key module is electrically connected with the input end of the master control module 9 through the third signal line. The display screen module and the key module are both arranged at the top end of the shell 1.

[0058] The display screen module is used to display the state information of the power supply system, such as voltage, current, power state, etc., to provide fault prompts and warning information, to display operation guidelines or setting menus, and to provide real-time state information of the power supply system for the operator to intuitively understand, so as to facilitate monitoring and management. The display screen can display fault information in time to help the operator quickly identify and solve problems, reduce troubleshooting time, provide a graphical interface and text prompts, make the operation more convenient, and reduce the difficulty of use. The key module is used to receive input instructions of the operator, such as mode switching, parameter adjustment, and confirmation operation, and to transmit the input instructions to the main control module 9 for processing. The key module provides a flexible operation mode, allowing the operator to adjust the settings of the power supply system as needed, and through key input, precise parameter adjustment and mode switching can be realized to meet different power supply needs. The key module enhances the human-computer interaction, allowing the operator to interact with the power supply system more effectively.

[0059] The display screen module and the key module of the human-computer interaction unit jointly constitute the interactive interface of the truck-mounted terminal stable power supply device. The display screen module provides intuitive information display and fault prompts, while the key module realizes flexible operation and precise control. The cooperative work of these two modules greatly improves the operability and user experience of the power supply system, allowing the operator to more conveniently and quickly manage and control the power supply system. In addition, the display screen module and the key module are arranged at the top of the device shell 1, which is convenient for the operator to observe and operate, further improving the practicality and humanized design of the device.

[0060] As a preferred, the protection module 13 includes a first protection module and a second protection module in parallel, the first protection module is connected in series between the output end of the external power supply control circuit and the input end of the output connector 8, and the second protection module is connected in series between the output end of the standby power supply control circuit and the input end of the output connector 8.

[0061] The first protection module includes a first overvoltage protection circuit, a first overcurrent protection circuit, and a first fuse connected in series.

[0062] The second protection module includes a second overvoltage protection circuit, a second overcurrent protection circuit, and a second fuse connected in series.

[0063] The first overvoltage protection circuit monitors the output voltage of the external power supply control circuit, and when the voltage exceeds a preset threshold, the power supply is quickly cut off to prevent overvoltage damage to the vehicle terminal. The first overcurrent protection circuit monitors the current passing through the external power supply control circuit, and when the current exceeds a preset threshold, the power supply is quickly cut off to prevent fire or equipment damage caused by overcurrent. The first fuse serves as the last protective barrier, and when the current abnormally rises to a dangerous level, the fuse melts, completely cutting off the power supply to protect the circuit and equipment. The second overvoltage protection circuit monitors the output voltage of the backup power supply control circuit to prevent overvoltage damage to the vehicle terminal. The second overcurrent protection circuit monitors the current passing through the backup power supply control circuit to prevent fire or equipment damage caused by overcurrent. The second fuse melts when the current abnormally rises, cutting off the power supply and protecting the circuit and equipment. The triple protection of overvoltage, overcurrent, and fuse ensures the stability and safety of the external power supply and backup power supply 3, and the overvoltage and overcurrent protection circuits can quickly respond to abnormal situations to reduce damage risk. The design of the fuse makes it easy to replace and maintain after a fault.

[0064] By setting the first protection module and the second protection module in parallel and connecting them in series to the output end of the external power supply control circuit and the backup power supply control circuit, respectively, the truck-mounted terminal stable power supply device achieves comprehensive and multiple protection of the power supply system. Each protection module contains an overvoltage protection circuit, an overcurrent protection circuit, and a fuse, forming a layer-by-layer protection to ensure that the power supply can be quickly cut off in any abnormal situation to protect the vehicle terminal and the power supply system from damage. This design greatly improves the stability and safety of the power supply system, providing a solid power guarantee for the normal operation of the truck.

[0065] As a preferred embodiment, the electrical signal detection module 10 includes a first electrical signal detection module and a second electrical signal detection module.

[0066] The first electrical signal detection module includes a first voltage transformer and a first current transformer. The first voltage transformer is connected in parallel between the output end of the first fuse and the ground. The first current transformer is connected in series between the first overcurrent protection circuit and the first fuse.

[0067] The second electrical signal detection module includes a second voltage transformer and a second current transformer. The second voltage transformer is connected in parallel between the output end of the second fuse and the ground. The second current transformer is connected in series between the second overcurrent protection circuit and the second fuse.

[0068] The first voltage transformer monitors the voltage of the output end of the first fuse, converts high voltage into a low voltage signal suitable for detection, and provides the low voltage signal to the main control module 9 for analysis; the first current transformer monitors the current passing through the first overcurrent protection circuit, converts large current into a small current signal suitable for detection, and provides the small current signal to the main control module 9 for analysis; through the voltage and current transformers, the voltage and current states of the external power supply control circuit can be accurately monitored in real time, which helps to discover potential voltage or current abnormalities in a timely manner, so that preventive measures can be taken to avoid faults, and accurate voltage and current data can be provided for the power management module 15 and the main control module 9 to support intelligent power management and control;

[0069] The second voltage transformer monitors the voltage of the output end of the second fuse, converts high voltage into a low voltage signal suitable for detection, and provides the low voltage signal to the main control module 9 for analysis; the second current transformer monitors the current passing through the second overcurrent protection circuit, converts large current into a small current signal suitable for detection, and provides the small current signal to the main control module 9 for analysis; the standby power supply 3 can also be accurately monitored when connected, ensuring the stability and safety of the standby power supply 3, and the standby power supply 3 and the external power supply have independent electric signal detection modules, which do not interfere with each other, improving the accuracy and reliability of the monitoring; both the external power supply and the standby power supply 3 are comprehensively monitored in terms of voltage and current, providing comprehensive data support for the entire device;

[0070] The electric signal detection module 10 realizes accurate monitoring of the voltage and current of the truck-mounted terminal stable power supply device through the first and second electric signal detection modules; each detection module includes a voltage transformer and a current transformer, which convert high voltage and large current into signals suitable for detection, providing real-time data support for the main control module 9 and the power management module 15; this design not only improves the monitoring capability of the power supply system, but also enhances the fault prevention and response capability of the device, providing more stable and reliable power support for the normal operation of the device.

[0071] The truck-mounted terminal stable power supply device provided by the utility model has simple and concise device design, is convenient to install and maintain, and effectively reduces manufacturing and maintenance costs; the main and standby power supply mechanism ensures the continuity and stability of power supply; the overvoltage, overcurrent and other protection functions ensure power supply safety, significantly improve the stability and reliability of power supply; the setting of the man-machine interaction unit makes operation more intuitive and convenient, improves user experience, and the maintenance door arranged at the bottom end of the device shell facilitates daily maintenance and repair work, reducing maintenance difficulty.

[0072] The utility model is not limited to the above optional implementation, and anyone can derive other various forms of products under the enlightenment of the utility model. The above specific embodiments should not be understood as limiting the protection scope of the utility model, and the protection scope of the utility model should be defined in the claims, and the specification can be used to explain the claims.

Claims

1. A stable power supply device for a truck-mounted terminal, characterized in that: The truck-mounted terminal stable power supply device is arranged in the interior of the truck, and comprises a device shell (1), a power supply control mainboard (2) and a backup power supply (3). The top end of the device shell (1) is provided with a man-machine interaction unit (4), and the bottom end of the device shell (1) is provided with an inspection door (5). The power supply control mainboard (2) and the backup power supply (3) are arranged in the interior of the device shell (1), and the power supply control mainboard (2) is electrically connected with the man-machine interaction unit (4), the backup power supply (3), the power supply system, the control system and the truck-mounted terminal of the truck.

2. The truck-mounted terminal steady power supply device of claim 1, wherein: The interior of the device shell (1) is provided with a first fixing groove and a second fixing groove. One side of the device shell (1) is provided with a first cable hole, and the top end of the device shell (1) is provided with a second cable hole. The power supply control mainboard (2) is arranged in the first fixing groove. The first cable of the power supply control mainboard (2) is electrically connected with the power supply system, the control system and the truck-mounted terminal of the truck outside the device shell (1) through the first cable hole. The second cable of the power supply control mainboard (2) is electrically connected with the man-machine interaction unit (4) outside the device shell through the second cable hole. The backup power supply (3) is arranged in the second fixing groove.

3. The truck-mounted terminal steady power supply device of claim 2, wherein: The power supply control mainboard (2) comprises a substrate (6), an input connector (7) arranged on one side of the substrate (6), an output connector (8) arranged on the other side of the substrate (6), a main control module (9) arranged at one end of the substrate (6), an electric signal detection module (10), a charging module (11), a voltage stabilizing module (12), a protection module (13), a power supply control module (14) and a power management module (15). The input end of the main control module (9) is electrically connected with the output end of the man-machine interaction unit (4), the output end of the control system of the truck, the output end of the electric signal detection module (10) and the output end of the power management module (15). The output end of the main control module (9) is electrically connected with the input end of the man-machine interaction unit (4), the control end of the power supply control module (14) and the input end of the power management module (15). The output end of the power management module (15) is electrically connected with the control end of the charging module (11) and the control end of the voltage stabilizing module (12). The output end of the voltage stabilizing module (12) is electrically connected with the input end of the power supply control module (14). The input end of the voltage stabilizing module (12) is electrically connected with the output end of the charging module (11). The input end of the power supply control module (14) is electrically connected with the output end of the backup power supply (3). The output end of the power supply control module (14) is electrically connected with the input end of the backup power supply (3) through the protection module (13) in series. The output end of the output connector (8) is electrically connected with the input end of the vehicle terminal of the truck, the input end of the charging module (11) is electrically connected with the output end of the input connector (7), the input end of the input connector (7) is electrically connected with the output end of the power supply system of the truck, and the detection end of the electric signal detection module (10) is connected between the output end of the power supply control module (14) and the input end of the output connector (8).

4. The truck-mounted terminal steady power supply device of claim 3, wherein: The first cable is internally provided with a first signal line, a first power line and a second power line, the input end of the main control module (9) is electrically connected with the output end of the control system of the truck through the first signal line, the output end of the output connector (8) is electrically connected with the input end of the vehicle terminal of the truck through the first power line, and the input end of the input connector (7) is electrically connected with the output end of the power supply system of the truck through the second power line. The second cable is provided with a second signal line, a third signal line and a third power line, the output end of the main control module (9) is electrically connected with the input end of the man-machine interaction unit (4) through the second signal line, the input end of the main control module (9) is electrically connected with the output end of the man-machine interaction unit (4) through the third signal line, and the power supply end of the main control module (9) is electrically connected with the power supply end of the man-machine interaction unit (4) through the third power line.

5. The truck-mounted terminal steady power supply device of claim 4, wherein: The power supply control module (14) comprises an external power supply control circuit, an external power charging control circuit and a backup power control circuit, the control end of the external power supply control circuit, the control end of the external power charging control circuit and the control end of the backup power control circuit are electrically connected with the output end of the main control module (9); The input end of the external power supply control circuit is electrically connected with the output end of the voltage stabilizing module (12), and the output end of the external power supply control circuit is electrically connected with the input end of the output connector (8) through the protection module (13) in series connection; The input end of the external power charging control circuit is electrically connected with the output end of the voltage stabilizing module (12), and the output end of the external power charging control circuit is electrically connected with the input end of the backup power supply (3); The input end of the backup power control circuit is electrically connected with the output end of the backup power supply (3), and the output end of the backup power control circuit is electrically connected with the input end of the output connector (8) through the protection module (13) in series connection.

6. The truck-mounted terminal steady power supply device of claim 5, wherein: The external power supply control circuit is provided with a first electric switch and a first electric switch driver, the output end of the first electric switch driver is electrically connected with the control end of the first electric switch, the control end of the first electric switch driver is electrically connected with the output end of the main control module (9), the input end of the first electric switch is electrically connected with the output end of the voltage stabilizing module (12), and the output end of the first electric switch is electrically connected with the input end of the output connector (8) through the protection module (13) in series connection. The external power supply charging control circuit is provided with a second electric switch and a second electric switch driver, an output end of the second electric switch driver is electrically connected with a control end of the second electric switch, a control end of the second electric switch driver is electrically connected with an output end of the main control module (9), an input end of the second electric switch is electrically connected with an output end of the voltage stabilizing module (12), and an output end of the second electric switch is electrically connected with an input end of the backup power supply (3); The backup power supply control circuit is provided with a third electric switch and a third electric switch driver, an output end of the third electric switch driver is electrically connected with a control end of the third electric switch, a control end of the third electric switch driver is electrically connected with an output end of the main control module (9), an input end of the third electric switch is electrically connected with an output end of the backup power supply (3), and an output end of the third electric switch is electrically connected with an input end of the output connector (8) through the protection module (13) in series.

7. The truck-mounted terminal steady power supply device of claim 6, wherein: The man-machine interaction unit (4) includes a display screen module and a key module, an input end of the display screen module is electrically connected with an output end of the main control module (9) through a second signal line, a power supply end of the display screen module is electrically connected with a power supply end of the main control module (9) through a third power supply line, an output end of the key module is electrically connected with an input end of the main control module (9) through a third signal line, and the display screen module and the key module are arranged at the top end of the shell (1).

8. The truck-mounted terminal steady power supply device of claim 7, wherein: The protection module (13) includes a first protection module and a second protection module in parallel, the first protection module is connected in series between an output end of the external power supply charging control circuit and an input end of the output connector (8), and the second protection module is connected in series between an output end of the backup power supply control circuit and the input end of the output connector (8).

9. The truck-mounted terminal steady power supply device of claim 8, wherein: The first protection module includes a first overvoltage protection circuit, a first overcurrent protection circuit and a first fuse in series; The second protection module includes a second overvoltage protection circuit, a second overcurrent protection circuit and a second fuse in series.

10. The truck-mounted terminal steady power supply device of claim 9, wherein: The electric signal detection module (10) includes a first electric signal detection module and a second electric signal detection module; The first electric signal detection module includes a first voltage transformer and a first current transformer, the first voltage transformer is connected in parallel between an output end of the first fuse and the ground, and the first current transformer is connected in series between the first overcurrent protection circuit and the first fuse; The second electric signal detection module includes a second voltage transformer and a second current transformer, the second voltage transformer is connected in parallel between an output end of the second fuse and the ground, and the second current transformer is connected in series between the second overcurrent protection circuit and the second fuse.

Images