Mobile communication vehicle

Abstract

The mobile communication vehicle comprises a vehicle body, a driving control area, a core equipment area, a communication expansion area and an energy guarantee area are sequentially arranged in the vehicle body from front to back, a vehicle roof function platform is arranged at the bottom of the vehicle body, and the energy guarantee area is provided with a charging and discharging switching system for supplying power to the core equipment area, the communication expansion area and the vehicle roof function platform. The roof functional platform is provided with a photovoltaic power generation module matched with the charging and discharging switching system, one group of batteries discharge and supply power while the other group of batteries can be charged through photovoltaic, and seamless switching of charging and discharging states is carried out between the two groups of batteries. The mobile communication vehicle has the advantages that the battery cruising ability is high, online charging can be achieved, the voltage is stable, and therefore the signal stability of the mobile communication vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile communication vehicles, and in particular to a mobile communication vehicle. Background Art

[0002] During natural disasters, large gatherings, or other temporary network coverage needs, existing mobile communication base stations are often easily destroyed or congested. Mobile communication vehicles, as a supplement to emergency network coverage, can effectively alleviate signal pressure caused by sudden communication peaks. As key equipment for emergency communications and special scenarios, mobile communication vehicles must be able to provide stable and high-speed communication services in complex environments.

[0003] However, mobile communication vehicles in the prior art, especially emergency mobile communication vehicles used in natural disaster situations, generally suffer from problems such as short battery life and unstable signals due to battery capacity, and are insufficient in their ability to cope with complex and harsh environments. Summary of the Invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a mobile communication vehicle with a battery having a long battery life, capable of online charging, and stable voltage, thereby improving the signal stability of the mobile communication vehicle.

[0005] In order to achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A mobile communication vehicle includes a vehicle body. A driving control area, a core equipment area, a communication expansion area, and an energy security area are sequentially arranged in the vehicle body from front to back. A roof functional platform is provided at the bottom of the vehicle body. The energy security area is provided with a charge and discharge switching system for supplying power to the core equipment area, the communication expansion area, and the roof functional platform. The roof functional platform is provided with a photovoltaic power generation module that cooperates with the charge and discharge switching system. While one group of batteries discharges to supply power, another group of batteries can be charged through photovoltaics, and seamless switching of charge and discharge states can be performed between the two groups of batteries.

[0007] The charge-discharge switching system addresses the capacity limitations of a single battery pack, avoiding communication interruptions caused by battery replacement. Dynamic matching of photovoltaic modules and battery packs improves energy efficiency, significantly enhancing the vehicle's endurance and communication stability in complex environments, enabling it to better respond to temporary network coverage needs during natural disasters, large gatherings, and other situations.

[0008] Preferably, the charge-discharge switching system includes: a first battery pack and a second battery pack for storing electrical energy; a charge and discharge switching circuit, comprising a MOSFET switch array for controlling the charge and discharge paths of the first battery pack and the second battery pack respectively; Power management controller, used to monitor battery status and control charge and discharge switching; The MOSFET switch adopts a "first on, then off" switching sequence. The MOSFET in the new discharge path is turned on first, and then the MOSFET in the original discharge path is turned off after waiting for 500μs-2ms.

[0009] This system achieves continuous power supply for the mobile communication vehicle's power supply system. The charge-discharge switching system significantly extends the vehicle's battery life by alternating between two battery banks. The MOSFET switch's "on-before-off" switching sequence ensures power continuity, avoids momentary power outages during switching, and improves the stability of communication equipment. Furthermore, when used in conjunction with a photovoltaic power generation module, it achieves efficient energy utilization and enhances the mobile communication vehicle's emergency communication capabilities in complex environments.

[0010] Preferably, the charge and discharge switching circuit includes: The first charging MOSFET and the second charging MOSFET respectively control the charging paths of the first battery group and the second battery group from solar energy; The first discharge MOSFET and the second discharge MOSFET respectively control the discharge paths of the first battery group and the second battery group to the load; The MOSFET drive circuit uses optocoupler isolation and driver chip to achieve electrical isolation between the control signal and the power circuit; The anti-backflow diode is connected in series in the discharge circuit to prevent the reverse current from flowing into the disconnected battery pack.

[0011] This achieves efficient isolation control and reliable protection for the charge-discharge switching circuit. The optocoupler isolation driver for the MOSFET switch improves the control signal's anti-interference capability, preventing the power circuit from interfering with the control circuit. The anti-backflow diode effectively blocks current flow back into the load, protecting the battery pack when not in operation and enhancing the stability and reliability of the mobile communication vehicle's power system.

[0012] Preferably, the power management controller implements at least one of the following switching trigger conditions: The discharged battery voltage is lower than the preset threshold; The rechargeable battery is fully charged; Manual forced switching command; The state of charge of the two groups of batteries differed by more than 15%.

[0013] This application implements intelligent switching management of battery packs. When the discharged battery voltage falls below a threshold, the battery is switched promptly to prevent over-discharge. Switching when the rechargeable battery is fully charged maximizes battery capacity utilization. Manual switching provides flexible operation. Switching triggered by a difference in state of charge balances the service life of the two battery packs. These diverse switching trigger conditions ensure that mobile communication vehicles can maintain a stable power supply in all situations, effectively extending overall battery life.

[0014] Preferably, a pull-out battery compartment is provided at the rear end or side of the energy security area, and the battery pack is arranged in the pull-out battery compartment. When the pull-out battery compartment is pulled out from the vehicle body, the battery pack in the pull-out battery compartment and the charge and discharge switching circuit are powered off; when the pull-out battery compartment is inserted into place from the vehicle body, the battery pack in the pull-out battery compartment and the charge and discharge switching circuit are powered on.

[0015] This allows for quick battery replacement and maintenance. Operators can conveniently remove the battery compartment for inspection and replacement without having to enter the vehicle, improving work efficiency. The pull-out structure, combined with an automatic power-off mechanism, ensures safety during the replacement process. Furthermore, the modular design facilitates standardized battery management and backup, extending the mobile communication vehicle's operating time.

[0016] Preferably, a plurality of sliders are provided at the upper and lower ends of the pull-out battery compartment, and a guide rail cooperating with the sliders is provided in the vehicle body to realize the sliding and pulling of the pull-out battery compartment.

[0017] Preferably, an installation cavity is provided in the vehicle body, a connection platform is provided at the bottom of the installation cavity, a device housing is provided on the connection platform, the core device area and the communication expansion area are arranged in the device housing, the bottom of the device housing is an arc surface, the lowest point of the device housing and the connection platform are tightened by cables, and a number of elastic reset parts are provided between the device housing and the connection platform. This improves the stability of the equipment of the mobile communication vehicle under complex road conditions. The arc surface design of the bottom of the device housing is combined with the cable tensioning structure, so that the equipment can remain relatively stable when the vehicle is bumpy. The elastic reset part further absorbs vibrations and reduces the impact on the equipment. This enables the core communication equipment to still work normally in harsh environments, thereby improving the reliability and adaptability of the mobile communication vehicle.

[0018] Preferably, elastic pads are filled between the two outer sides of the device housing and the vehicle body, providing elastic space for the device housing to absorb movement and vibration.

[0019] Preferably, the arc surface at the bottom of the device housing is a cylindrical segment surface, and the axis of the cylindrical segment surface is parallel to the axis of the vehicle body. This application effectively alleviates the mechanical vibration impact of mobile communication vehicles under complex road conditions. Through the combination of rolling contact surface and elastic constraint structure, the device housing obtains a controllable buffer displacement space in three-dimensional space. While ensuring the stability of equipment installation, it significantly reduces the loose connection or component damage of core communication equipment caused by severe vibration, thereby ensuring the continuous and reliable operation of the emergency communication system under harsh road conditions.

[0020] The present invention has the following beneficial effects: Long battery life; Easy to replace batteries; The structure has strong resistance to shock and vibration, and the signal output is highly stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal structure of one embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of a charge-discharge switching system in a mobile communication vehicle disclosed in one embodiment of the present invention.

[0023] Figure 3 This is a judgment logic diagram of a charge-discharge switching system in a mobile communication vehicle disclosed in one embodiment of the present invention.

[0024] Figure 4 This is a schematic structural diagram of a pull-out battery compartment in a mobile communication vehicle disclosed in one embodiment of the present invention.

[0025] Figure 5 This is a schematic structural diagram of the cooperation between the vehicle body and the bottom of the equipment housing in a mobile communication vehicle disclosed in one embodiment of the present invention.

[0026] In the figure: vehicle body 1, driving control area 2, core equipment area 3, communication expansion area 4, energy security area 5, roof functional platform 6, satellite antenna 7, photovoltaic power generation module 8, pull-out battery compartment 9, slider 10, guide rail 11, connector 12, heat dissipation blind hole 13, connection platform 14, equipment housing 15, elastic reset part 16, cable 17, buffer pad 18. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] As one of the embodiments of this application, Figures 1 to 5 As shown, a mobile communication vehicle includes a vehicle body 1. A driving control area 2, a core equipment area 3, a communication expansion area 4 and an energy security area 5 are arranged in sequence from front to back in the vehicle body 1. A roof function platform 6 is provided at the bottom of the vehicle body 1. The energy security area 5 is provided with a charge and discharge switching system for supplying power to the core equipment area 3, the communication expansion area 4 and the roof function platform 6. The roof function platform 6 is provided with a photovoltaic power generation module 8 that cooperates with the charge and discharge switching system. While one group of batteries discharges to supply power, the other group of batteries can be charged through photovoltaics, and seamless switching of the charge and discharge states between the two groups of batteries can be performed.

[0029] Among them, the charge and discharge switching system refers to a circuit system that can control the alternating charging and discharging of two battery packs. Specifically, it can be implemented by using a MOSFET switch array in conjunction with a power management controller to ensure power supply continuity by switching the working status of the two battery packs.

[0030] The photovoltaic power generation module 8 refers to a device that converts solar energy into electrical energy, which can be achieved by using a photovoltaic panel in conjunction with an inverter circuit to provide renewable energy supplement for the battery pack.

[0031] Among them, seamless switching refers to maintaining the continuous stability of the voltage and current at the load end when switching the power supply battery pack, and is achieved by adopting a "first on, then off" timing control strategy to avoid power interruption or voltage fluctuation.

[0032] This application realizes dynamic switching and energy complementarity between the two battery packs in the charging and discharging states through the coordinated configuration of the charging and discharging switching system and the photovoltaic power generation module 8, thereby extending the continuous power supply time of the mobile communication vehicle in emergency scenarios and improving communication stability in complex environments.

[0033] The operating process and principles of this application are as follows: The mobile communication vehicle includes a vehicle body 1, which is arranged, from front to back, within a driving control area 2, a core equipment area 3, a communication expansion area 4, and an energy supply area 5. A rooftop functional platform 6 is located at the bottom of the vehicle body 1. The energy supply area 5 is equipped with a charge-discharge switching system to supply power to the core equipment area 3, the communication expansion area 4, and the rooftop functional platform 6. The rooftop functional platform 6 is equipped with a photovoltaic power generation module 8 to cooperate with the charge-discharge switching system.

[0034] The charge-discharge switching system consists of two battery groups. One group discharges power while the other is charged by photovoltaics. The system seamlessly switches between the two groups. This design ensures continuous power supply and efficient use of photovoltaic energy. The specific working process is as follows: 1. In the initial state, the first set of batteries is discharged to provide power, and the second set of batteries is charged through photovoltaics.

[0035] 2. When the power level of the first battery group drops to the set threshold, the system triggers the switch.

[0036] 3. When switching, the system first opens the discharge path of the second group of batteries.

[0037] 4. After a short delay (usually 500μs-2ms), the system disconnects the discharge path of the first group of batteries.

[0038] 5. The second set of batteries begins to discharge and supply power, and the first set of batteries switches to charging state.

[0039] 6. Repeat the above process to realize the cyclic switching of the two battery groups.

[0040] The switching sequence eliminates power supply gaps and ensures continuous power supply to the load. At the same time, the dynamic matching of the photovoltaic power generation module 8 and the battery pack achieves synchronous charging and discharging, improving energy utilization efficiency.

[0041] As a preferred embodiment, the solution of this application is specifically implemented as follows: The mobile communications vehicle utilizes a van chassis modified from a conventional van. The interior of the vehicle body 1 is divided, from front to back, into the driving control area 2, the core equipment area 3, the communication expansion area 4, and the energy supply area 5. The driving control area 2 is located in the cab and houses the driver's seat and vehicle control panel. The core equipment area 3 houses core communications equipment such as the baseband processing unit and radio frequency unit. The communication expansion area 4 is equipped with expanded communication modules such as microwave transmission equipment and satellite communication equipment. The energy supply area 5 houses the charging and discharging switching system.

[0042] The roof functional platform 6 is equipped with communication equipment such as an antenna array and a satellite antenna 7, as well as a photovoltaic power generation module 8. The photovoltaic power generation module 8 is composed of multiple photovoltaic panels, which are fixed to the platform by brackets and can be adjusted to obtain optimal power generation efficiency.

[0043] The charge-discharge switching system includes two lithium-ion battery packs, a charge-discharge switching circuit, and a power management controller. Each battery pack consists of multiple parallel-connected lithium-ion battery modules, with a single pack capacity of up to 100 kWh. The charge-discharge switching circuit uses a MOSFET switch array to control the battery pack's charge and discharge paths. The power management controller monitors the battery status in real time and controls the switching sequence.

[0044] During system operation, one set of batteries discharges to power the core equipment area 3, the communication expansion area 4, and the roof functional platform 6. Simultaneously, another set of batteries is charged via the photovoltaic power generation module 8. When the charge level of the discharged battery set drops below a preset threshold (e.g., 20%), the system triggers a switchover. During this switchover, the controller first turns on the discharge MOSFET of the standby battery set, then turns off the MOSFET of the original discharge battery set after a 500μs delay, achieving seamless switching.

[0045] The MOSFET switch array consists of multiple metal-oxide semiconductor field-effect transistors, each of which controls the charge and discharge paths of a single battery pack. The power management controller uses voltage and current sensors to collect real-time state-of-charge data from both battery packs. The timing control logic for the charge and discharge switching circuit is written into the controller's embedded firmware, and the switching delay is implemented using a programmable timer. An anti-backflow diode is placed at the end of the discharge loop, with a forward voltage drop of no more than 0.7V.

[0046] Specifically, when the power management controller detects that the voltage of the current discharging battery pack is lower than the set threshold, the switching procedure is started. The control signal first turns on the MOSFET switch corresponding to the target battery pack. At this time, the discharge circuits of the two battery groups form a parallel state. After a current stabilization period of 500μs-2ms, the MOSFET switch of the original battery pack is disconnected. This time window ensures that the capacitive energy storage element at the load end is fully charged to avoid voltage drops. During the switching process, the anti-backflow diode prevents current from flowing back from the load end to the non-working battery pack, maintaining a unidirectional discharge path. The power management controller synchronously adjusts the charging target of the photovoltaic power generation module 8 and directs the solar energy input to the non-working battery pack for supplementary charging.

[0047] As a preferred embodiment, the solution of this application is specifically implemented as follows: The charge-discharge switching system includes a first battery pack and a second battery pack for storing electrical energy. The charge-discharge switching circuit includes a MOSFET switch array that controls the charge and discharge paths of the first and second battery packs, respectively. A power management controller monitors battery status and controls the charge-discharge switching. The MOSFET switches utilize a "first on, then off" switching sequence: the MOSFET in the new discharge path turns on first, then turns off after a 500μs-2ms delay.

[0048] Specifically, the first and second battery packs can utilize lithium-ion batteries, with each pack consisting of multiple battery cells connected in series and parallel. The MOSFET switch array in the charge-discharge switching circuit includes multiple N-channel enhancement-mode MOSFETs, which control the on and off of the charge and discharge paths. The power management controller utilizes a microcontroller, which monitors battery status by sampling parameters such as battery voltage and current.

[0049] As a preferred embodiment, Figure 2 As shown, the solution of this application is specifically implemented as follows: The charge-discharge switching circuit includes first and second charging MOSFETs, first and second discharging MOSFETs, a MOSFET driver circuit, and an anti-backflow diode. The first and second charging MOSFETs control the solar charging path to the first and second battery groups, respectively. The first and second discharging MOSFETs control the discharge path to the load from the first and second battery groups, respectively. The MOSFET driver circuit uses optocoupler isolation in conjunction with a driver chip to electrically isolate the control signal from the power circuit. An anti-backflow diode is connected in series in the discharge circuit to prevent reverse current from flowing into the disconnected battery group.

[0050] The MOSFET driver circuit consists of an optocoupler isolator and a dedicated MOSFET driver chip. The optocoupler's LED terminal is connected to the controller, while the phototransistor terminal is connected to the driver chip's input. The driver chip's output is connected to the gates of each MOSFET, achieving electrical isolation and level conversion of the control signal.

[0051] The anti-backflow diode uses a Schottky diode, which has a reduced forward voltage and a short reverse recovery time. The anode of the diode is connected to the drain of the MOSFET, and the cathode is connected to the load to prevent the current at the load end from flowing back into the battery pack that is not working. During the discharge process, the discharge circuits of the first battery pack and the second battery pack are respectively connected in series with Schottky diodes, and the Schottky diodes are installed at the positive output end of each battery pack. When the first battery pack is broken due to an internal short circuit or a loose connector, the Schottky diode corresponding to the battery pack will automatically block the reverse flow of current, and its discharge circuit current will drop sharply to zero, and the abnormal signal will be transmitted back to the power management controller. The controller will immediately turn off the first discharge MOSFET while maintaining the second discharge MOSFET in the on state. The second battery pack can continue to power the system to ensure the continuous operation of the system. Due to the reverse cutoff characteristics of the Schottky diode, the discharge current of the second battery pack cannot flow back into the first battery pack circuit, ensuring that the load power supply is not affected. After the faulty battery pack is isolated, the operation and maintenance personnel can quickly replace the faulty unit through the pull-out battery compartment 9, and the system can maintain continuous operation without shutting down.

[0052] Through the above technical solution, this application achieves efficient isolation control and reliable protection for the charge-discharge switching circuit. The optocoupler isolation drive of the MOSFET switch improves the control signal's anti-interference capability, preventing the power circuit from interfering with the control circuit. The anti-backflow diode effectively prevents current from flowing back into the load, protecting the battery pack when not in operation. This design enhances the stability and reliability of the mobile communication vehicle power system and improves the system's adaptability in complex environments.

[0053] Furthermore, the switching timing of the MOSFET switches is precisely controlled by a power management controller, which implements at least one of the following switching trigger conditions: the discharged battery voltage falls below a preset threshold; the charged battery reaches a full charge; a manual forced switching command is issued; or the state of charge difference between the two battery groups exceeds 15%.

[0054] Specifically, when the voltage of the discharged battery falls below a preset threshold, the voltage sensor sends a signal to the power management controller, triggering a switch to prevent over-discharge. When the rechargeable battery reaches full charge, the charging current detection circuit outputs a signal to cause the system to switch to discharging that battery, thereby improving photovoltaic energy utilization. A manual forced switch command bypasses the automatic judgment logic in emergency situations and directly executes the switch operation. When the state of charge difference exceeds 15%, the system actively balances the charge and discharge cycles of the two battery groups, extending their overall service life. For example, when the state of charge of the first battery group is 60% and the state of charge of the second battery group is 80%, the system automatically switches to discharging the second battery group while simultaneously starting to charge the first battery group. Each trigger condition is arbitrated through priority logic, with voltage protection triggering a higher level than state of charge balancing, giving manual commands the highest operational authority.

[0055] Through the above technical solutions, this application realizes intelligent switching management of battery packs. When the voltage of the discharged battery is lower than the threshold, the battery is switched in time to avoid over-discharge; when the charging battery is fully charged, the switching maximizes the battery capacity utilization; manual switching provides the possibility of flexible operation; and the switching triggered by the difference in charge state balances the service life of the two battery groups. These diverse switching trigger conditions ensure that the mobile communication vehicle can continue to have a stable power supply in various situations, effectively extending the overall battery life. In order to avoid frequent switching of the charging and discharging circuits, the charging and discharging circuits are maintained for at least five minutes after the switching action.

[0056] As a preferred embodiment, Figure 1 、 Figure 4 and Figure 5 As shown, the present application further proposes that a pull-out battery compartment 9 is provided at the rear end or side of the energy security zone 5, and the battery pack is arranged in the pull-out battery compartment 9. When the pull-out battery compartment 9 is pulled out from the vehicle body 1, the battery pack in the pull-out battery compartment 9 and the charge-discharge switching circuit are powered off; when the pull-out battery compartment 9 is inserted into place from the vehicle body 1, the battery pack in the pull-out battery compartment 9 and the charge-discharge switching circuit are powered on.

[0057] As an implementation, the pull-out battery compartment 9 has a slider 10 at its bottom, which engages with a guide rail 11 within the vehicle body 1. A handle is provided at the front of the battery compartment to facilitate its removal. A connector 12 is located at the rear of the battery compartment, including positive and negative terminals and a control signal interface. A matching socket is located in a corresponding position within the vehicle body 1. When the battery compartment is inserted, the connector 12 automatically docks with the socket, establishing an electrical connection.

[0058] Blind heat dissipation holes 13 are located on both sides of the battery compartment to ensure heat dissipation of the battery pack. The battery compartment housing is made of metal and provides protection. The vehicle body 1 is dustproof and waterproof to ensure the reliability of all electrical equipment.

[0059] The battery pack is connected to the charge-discharge switching circuit via elastic contacts. When the retractable battery compartment 9 is fully inserted, the contacts are compressed and conduct. When the compartment is withdrawn beyond a set distance, the contacts separate, disconnecting the circuit. Once fully inserted, the compartment is secured by the rear cover of the vehicle body 1. The power-off trigger mechanism utilizes a travel switch. When the compartment is withdrawn to a critical position, a mechanical disconnect is triggered, severing the charge-discharge circuit.

[0060] When the battery pack needs to be replaced or maintained, the operator pulls out the pull-out battery compartment 9 along the slide rail. When it moves to the critical position, the travel switch triggers the power-off signal, and the elastic contact is physically disconnected from the charge-discharge switching circuit to avoid arcing during live operation. When inserting a new battery compartment, the guide rail 11 and the slider 10 cooperate to guide the movement of the compartment body. After reaching the set position, the elastic contact is connected to the charge-discharge switching circuit under pressure. This process uses a mechanical structure to achieve circuit on-off control, without the need for manual intervention in electrical connections, which not only ensures operational safety but also improves battery replacement efficiency. As a result, mobile communication vehicles can quickly replace battery packs in emergency scenarios to avoid affecting the continuity of communication services due to maintenance downtime.

[0061] The present application further proposes that an installation cavity is provided in the vehicle body 1, a connecting platform 14 is provided at the bottom of the installation cavity, an equipment housing 15 is provided on the connecting platform 14, the core equipment area 3 and the communication expansion area 4 are provided in the equipment housing 15, the bottom of the equipment housing 15 is an arc surface, the lowest point of the equipment housing 15 is tightened with the connecting platform 14 by a cable 17, and a number of elastic reset parts 16 are provided between the equipment housing 15 and the connecting platform 14.

[0062] The bottom of the device housing 15 is designed with a cylindrical section, and the axis of the cylindrical section is parallel to the axis of the vehicle body 1, forming a rolling contact surface. The lowest point of the device housing 15 forms a fixed constraint point with the connecting platform 14 through a cable 17, and the elastic reset member 16 is symmetrically distributed on both sides of the housing using a coil spring group. A polyurethane buffer pad is set at the contact surface between the bottom of the arc surface and the connecting platform 14. The elastic reset member 16 is embedded in the buffer pad to limit its position, and the preload force of the spring group is set to the range of 200-500N. A buffer layer 18 is filled between the vehicle body 1 and the device housing 15.

[0063] The mounting cavity can be constructed using a metal frame, with the connecting platform 14 welded from steel plates. The device housing 15 is made of aluminum alloy, with a curved bottom surface featuring a rounded transition. The cable 17 is a high-strength steel wire rope, with its ends secured to the bottom of the device housing 15 and the connecting platform 14, respectively.

[0064] When the vehicle is traveling on complex roads, the device housing 15 tends to move laterally due to inertia. The contact surface between the bottom of the curved surface and the connection platform 14 dissipates some of the kinetic energy through rolling friction, while the remaining kinetic energy is absorbed by the symmetrically distributed spring assembly through elastic deformation. A cable 17 at the lowest point of the housing prevents it from completely separating from the connection platform 14, and a polyurethane cushioning layer 18 further reduces impact noise at the contact surface. When the external force disappears, the elastic potential energy of the spring assembly pushes the housing back to its initial position, maintaining the stability of the device installation.

Claims

1. A mobile communication vehicle, comprising a vehicle body, wherein a driving control area, a core equipment area, a communication expansion area, and an energy security area are sequentially arranged in the vehicle body from front to back, and a roof functional platform is provided at the bottom of the vehicle body, wherein: The energy security area is equipped with a charging and discharging switching system that supplies power to the core equipment area, communication expansion area and roof functional platform. The roof functional platform is equipped with a photovoltaic power generation module that cooperates with the charging and discharging switching system. While one group of batteries discharges to supply power, the other group of batteries can be charged through photovoltaics, and the charging and discharging states can be seamlessly switched between the two groups of batteries.

2. A mobile communication vehicle according to claim 1, characterized in that: The charge-discharge switching system includes: a first battery pack and a second battery pack for storing electrical energy; a charge and discharge switching circuit, comprising a MOSFET switch array for controlling the charge and discharge paths of the first battery pack and the second battery pack respectively; Power management controller, used to monitor battery status and control charge and discharge switching; The MOSFET switch adopts a "first on, then off" switching sequence. The MOSFET in the new discharge path is turned on first, and then the MOSFET in the original discharge path is turned off after waiting for 500μs-2ms.

3. A mobile communication vehicle according to claim 2, characterized in that: The charge and discharge switching circuit includes: The first charging MOSFET and the second charging MOSFET respectively control the charging paths of the first battery group and the second battery group from solar energy; A first discharge MOSFET and a second discharge MOSFET respectively control the discharge paths of the first battery group and the second battery group to the load; The MOSFET drive circuit uses optocoupler isolation and driver chip to achieve electrical isolation between the control signal and the power circuit; The anti-backflow diode is connected in series in the discharge circuit to prevent the reverse current from flowing into the disconnected battery pack.

4. The mobile communication vehicle according to claim 2, wherein: The power management controller implements at least one of the following switching trigger conditions: The discharged battery voltage is lower than the preset threshold; The rechargeable battery is fully charged; Manual forced switching command; The state of charge of the two groups of batteries differed by more than 15%.

5. The mobile communication vehicle according to claim 2, wherein: A pull-out battery compartment is provided at the rear end or side of the energy security area, and the battery pack is arranged in the pull-out battery compartment. When the pull-out battery compartment is pulled out from the vehicle body, the battery pack in the pull-out battery compartment and the charge and discharge switching circuit are disconnected from the power supply; when the pull-out battery compartment is inserted into place from the vehicle body, the battery pack in the pull-out battery compartment and the charge and discharge switching circuit are connected.

6. The mobile communication vehicle according to claim 5, characterized in that: The upper and lower ends of the pull-out battery compartment are respectively provided with a plurality of sliders, and the vehicle body is provided with guide rails matching the sliders to realize the sliding and pulling of the pull-out battery compartment.

7. A mobile communication vehicle according to any one of claims 1 to 6, characterized in that: An installation cavity is provided in the vehicle body, a connecting platform is provided at the bottom of the installation cavity, an equipment housing is provided on the connecting platform, the core equipment area and the communication expansion area are arranged in the equipment housing, the bottom of the equipment housing is an arc surface, the lowest point of the equipment housing and the connecting platform are tightened by a cable, and a number of elastic reset parts are provided between the equipment housing and the connecting platform.

8. The mobile communication vehicle according to claim 7, wherein: Elastic pads are filled between the two outer sides of the equipment shell and the vehicle body.

9. The mobile communication vehicle according to claim 7, wherein: The arc surface at the bottom of the equipment shell is a cylindrical segment surface, and the axis of the cylindrical segment surface is parallel to the axis of the vehicle body.

Images