A space-ground integration communication terminal capable of accessing a broadband satellite link

Abstract

The utility model relates to mobile communication technical field especially relates to a kind of ground-sky fusion communication terminal of accessible broadband satellite link, including communication module, control unit and power module;Further include: thermoelectric conversion unit, its hot end and at least one heating element inside the terminal preset thermal coupling, its cold end and the external heat dissipation structure of terminal thermal coupling, for using the temperature difference between heating element and external environment to generate electricity;Energy management unit is electrically connected with the electric energy output end of thermoelectric conversion unit, power module and control unit respectively;Energy management unit is configured as: the recovery electric energy information output by thermoelectric conversion unit and the energy state information of power module are collected, and control instruction is generated based on information, to adjust the communication mode of communication module;The utility model prolongs the continuous working time of terminal under the scene of no external power supply, while helping to simplify passive heat dissipation system, realize the miniaturization and light weight of terminal.

Description

Technical Field

[0001] This utility model relates to the field of mobile communication technology, and in particular to a space-ground integrated communication terminal that can access broadband satellite links. Background Technology

[0002] With the rapid development of satellite communication technology, especially the deployment of low-Earth orbit broadband satellite constellations, space-ground integrated communication terminals that can simultaneously access satellite networks and terrestrial mobile communication networks (such as 4G / 5G) are playing an increasingly important role in scenarios without stable terrestrial network coverage, such as emergency communication, ocean navigation, field operations, and military operations.

[0003] However, existing mobile terminals of this type face a prominent bottleneck in practical applications: energy efficiency. To maintain a stable broadband connection with high-orbit or low-orbit satellites, core components such as the radio frequency power amplifier (PA) and baseband processor inside the terminal typically require high operating power, generating a large amount of waste heat. Existing technical solutions mainly focus on addressing this by optimizing communication protocols, using low-power chips, or strengthening heat dissipation design in hardware (such as increasing the size of heat sinks and adding fans). These methods are essentially "throttling" and "passive dissipation," without addressing the fundamental contradiction of energy flow. On the one hand, the terminal continuously consumes the precious energy stored in the battery for communication; on the other hand, it releases usable waste heat energy into the environment through the heat dissipation system, while the weight and power consumption of the heat dissipation system itself further exacerbate the burden on the terminal, forming a vicious cycle of "power consumption - heat generation - energy consumption for heat dissipation." This severely restricts the terminal's battery life, lightweight design, and reliability under conditions of no mains power supply, as well as its reliability under long-term high-load operation.

[0004] Therefore, to address the above issues, a space-ground integrated communication terminal capable of accessing broadband satellite links is proposed. By introducing a thermoelectric conversion unit, the waste heat in traditional terminals is transformed into reusable energy, achieving closed-loop management of energy flow, extending its continuous working time in scenarios without external power supply, and helping to simplify the passive heat dissipation system, thereby achieving miniaturization and lightweighting of the terminal. Utility Model Content

[0005] In order to overcome the problems of poor battery life, lightweight design, and reliability of mobile terminals under existing technologies in practical applications, such as poor battery life, poor weight reduction, and poor reliability under long-term high-load operation without mains power supply.

[0006] The technical solution of this utility model is: a space-ground integrated communication terminal capable of accessing a broadband satellite link, comprising:

[0007] The communication module is used to establish and maintain wireless link connections with broadband satellite networks and terrestrial mobile communication networks.

[0008] The control unit is electrically connected to the communication module and is used to control the communication protocol processing and service data scheduling of the terminal.

[0009] The power module is used to provide operating power to the terminal;

[0010] A thermoelectric conversion unit, the hot end of which is thermally coupled to at least one pre-set heating element inside the terminal, and the cold end of which is thermally coupled to the external heat dissipation structure of the terminal, is used to generate electricity by utilizing the temperature difference between the heating element and the external environment.

[0011] The energy management unit is electrically connected to the power output terminal of the thermoelectric conversion unit, the power supply module, and the control unit, respectively.

[0012] The energy management unit is configured to: collect the recovered electrical energy information output by the thermoelectric conversion unit and the energy status information of the power supply module, and generate control commands based on the information to adjust the communication working mode of the communication module.

[0013] Preferably, when the terminal is working, the heat generated by the core heating element is conducted to the hot end of the TEG chip attached to it. The TEG chip uses the temperature difference between itself and the external heat dissipation surface to generate a Seebeck voltage and output recovered electrical energy. This electrical energy is directly fed back to the power system after being conditioned by a DC-DC circuit. At the same time, the energy management unit senses the system's energy input and output in real time and intelligently adjusts the communication strategy accordingly. For example, when the power is sufficient and there is a need for large data transmission, the terminal is allowed to work in a higher power consumption state for a short time. Although the power consumption increases, the power recovered by the TEG also increases proportionally, realizing active energy management of "trading high power consumption for high bandwidth and high energy recovery". When the power is low, the terminal is forced to switch to a low power consumption mode to extend the standby time.

[0014] Preferably, the thermoelectric conversion unit is a thermoelectric generator (TEG) chip; the heating element includes the radio frequency power amplifier (PA) in the communication module and / or the main processor chip in the control unit.

[0015] Preferably, the thermoelectric generator (TEG) chip is tightly bonded to the package shell of the radio frequency power amplifier (PA) and / or the main processor chip via a thermally conductive substrate to form an integrated package structure; the external heat dissipation structure includes heat dissipation fins or heat dissipation surfaces disposed on the terminal housing, and the cold end of the thermoelectric generator (TEG) chip is thermally connected to the heat dissipation fins or heat dissipation surfaces via a thermally conductive medium.

[0016] Preferably, the energy management unit includes:

[0017] An energy state monitoring subunit is used to monitor the remaining power of the power module and the actual recovered power of the thermoelectric conversion unit in real time.

[0018] The communication strategy scheduling subunit is communicatively connected to the energy state monitoring subunit and the control unit, and is used to dynamically generate strategy instructions for adjusting the operating parameters of the communication module based on the remaining power and the actual recovered power.

[0019] Preferably, the operating parameters of the communication module include at least one of transmit power, data modulation and coding scheme, and link sleep period; the communication strategy scheduling subunit is configured to: generate a first type of strategy instruction to increase the transmit power and / or the order of the data modulation and coding scheme when the actual recovered power is higher than a preset power threshold; and generate a second type of strategy instruction to reduce the transmit power and / or extend the link sleep period when the remaining power is lower than a preset power threshold.

[0020] Preferably, the power output terminal of the thermoelectric conversion unit is connected to the internal power bus of the terminal through a DC-DC conversion circuit. The recovered power is directly fed back to the power bus after being regulated by the DC-DC conversion circuit.

[0021] Preferably, the communication module includes a satellite communication submodule and a terrestrial mobile communication submodule; the control unit is configured to perform service offloading or seamless switching between the satellite communication link and the terrestrial mobile communication link according to the network status and the instructions of the energy management unit.

[0022] The beneficial effects of this utility model are:

[0023] This invention introduces a thermoelectric conversion unit to transform waste heat, which is considered harmful and must be dissipated in traditional terminals, into reusable energy, thus achieving closed-loop management of energy flow. Specifically, when the terminal is working, the heat generated by the core heating element (such as PA) is conducted to the hot end of the TEG plate attached to it. The TEG plate uses the temperature difference between itself and the external heat dissipation surface (cold end) to generate Seebeck voltage and output recovered electrical energy. This electrical energy is directly fed back to the power system after being conditioned by a DC-DC circuit. At the same time, the energy management unit senses the system's energy input and output (battery power and recovered power) in real time and intelligently adjusts the communication strategy accordingly. When there is sufficient power and a large data transmission requirement, the terminal is allowed to work in a higher power consumption state for a short period of time. Although power consumption increases, the power recovered by the TEG also increases proportionally, realizing active energy management of "trading high power consumption for high bandwidth and high energy recovery". When the power is low, the terminal is forced to switch to a low power consumption mode to extend standby time. Through the above process, this utility model fundamentally changes the relationship between the terminal and energy, thereby improving the energy utilization efficiency of the terminal at the hardware level, extending its continuous working time in scenarios without external power supply, and helping to simplify the passive heat dissipation system, realizing the miniaturization and lightweighting of the terminal. Attached Figure Description

[0024] Figure 1 The diagram shown is a schematic representation of the basic structure of the space-ground integrated communication terminal of this utility model that can access broadband satellite links.

[0025] Figure 2 The diagram shown is a schematic of the integrated packaging structure of the space-ground converged communication terminal that can access broadband satellite links according to this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] Please see Figure 1 and Figure 2 This utility model provides an embodiment: a space-ground integrated communication terminal capable of accessing a broadband satellite link, comprising:

[0029] The communication module is used to establish and maintain wireless link connections with broadband satellite networks and terrestrial mobile communication networks.

[0030] The control unit, electrically connected to the communication module, is used to control the communication protocol processing and business data scheduling of the control terminal.

[0031] The power module is used to provide operating power to the terminal.

[0032] The thermoelectric conversion unit has its hot end thermally coupled to at least one pre-set heating element inside the terminal, and its cold end thermally coupled to the external heat dissipation structure of the terminal, and is used to generate electricity by utilizing the temperature difference between the heating element and the external environment.

[0033] The energy management unit is electrically connected to the power output terminal of the thermoelectric conversion unit, the power module, and the control unit, respectively.

[0034] The energy management unit is configured to collect information on the recovered electrical energy output from the thermoelectric conversion unit and the energy status information of the power supply module, and generate control commands based on the information to adjust the communication working mode of the communication module.

[0035] When the terminal is working, the heat generated by the core heat-generating components is conducted to the hot end of the TEG chip attached to it. The TEG chip uses the temperature difference between itself and the external heat dissipation surface to generate a Seebeck voltage and output recovered electrical energy. This electrical energy is conditioned by a DC-DC circuit and directly fed back to the power system. At the same time, the energy management unit senses the system's energy input and output in real time and intelligently adjusts the communication strategy accordingly. For example, when the power is sufficient and there is a need for large data transmission, the terminal is allowed to work in a higher power consumption state for a short period of time. Although the power consumption increases, the power recovered by the TEG also increases proportionally, realizing active energy management of "trading high power consumption for high bandwidth and high energy recovery". When the power is low, the terminal is forced to switch to a low power consumption mode to extend standby time.

[0036] Furthermore, the thermoelectric conversion unit is a thermoelectric generator (TEG) chip; the heating elements include the radio frequency power amplifier (PA) in the communication module and / or the main processor chip in the control unit; the PA and the main processor are recognized as the components with the highest power density and the most concentrated heat generation in the terminal, and coupling with them can enable the thermoelectric conversion unit to obtain the maximum temperature difference drive, thereby improving the waste heat recovery efficiency.

[0037] Furthermore, to achieve efficient heat conduction, the thermoelectric generator (TEG) chip is tightly bonded to the package of the radio frequency power amplifier (PA) and / or the main processor chip via a ceramic or metal substrate with high thermal conductivity. The interface gaps can be filled with thermal grease or soldering to form an integrated package structure. The external heat dissipation structure includes heat sink fins or a large-area metal shell (heat dissipation surface) on the terminal housing. The cold end of the TEG chip is firmly thermally connected to the heat sink fins or heat dissipation surface via another thermally conductive substrate or heat pipe. This structure ensures that the heat flow path from the heat source (chip) through the hot end of the TEG chip, through the TEG material itself, to its cold end, and finally dissipated into the environment has low thermal resistance, which is the key to maintaining stable temperature difference power generation.

[0038] Furthermore, the energy management unit includes:

[0039] The energy state monitoring subunit is used to monitor the remaining power of the power module and the actual recovered power of the thermoelectric conversion unit in real time.

[0040] The communication strategy scheduling subunit is connected to the energy status monitoring subunit and the control unit. It has a pre-set strategy logic or dynamically generated strategy logic through an algorithm. Based on the real-time monitored remaining power and actual recovered power, it dynamically generates strategy instructions for adjusting the working parameters of the communication module and sends the instructions to the control unit for execution.

[0041] Furthermore, the operating parameters of the communication module include at least one of the following: transmit power, data modulation and coding scheme, and link sleep period; the communication strategy scheduling subunit is configured to: generate a first type of strategy instruction to increase the transmit power and / or the order of the data modulation and coding scheme when the actual recovered power is higher than a preset power threshold; and generate a second type of strategy instruction to reduce the transmit power and / or extend the link sleep period when the remaining power is lower than a preset power threshold.

[0042] The decision logic for configuring the communication strategy scheduling subunit is as follows: For example, when the actual recovered power is high (indicating that the terminal is working under high load, generating a lot of heat and recovering a lot of energy), and the remaining power is sufficient, a first type of strategy instruction can be generated, instructing the control unit to allow the communication module to appropriately increase the transmission power and / or adopt a higher-order MCS (such as switching from QPSK to 16QAM) in exchange for a higher data transmission rate. At this time, although the instantaneous power consumption increases, the waste heat recovery power also increases simultaneously, and the overall energy cycle of the system is in an active state. Conversely, when the remaining power is lower than the preset safety threshold, a second type of strategy instruction is generated, forcing the control unit to reduce the transmission power, adopt a more robust lower-order MCS, and / or extend the link sleep cycle during the inactive period, so that the terminal enters an extreme energy-saving state. The primary goal is to maintain basic communication and extend the survival time.

[0043] Furthermore, the power output terminal of the thermoelectric conversion unit is connected to the internal power bus of the terminal through a DC-DC conversion circuit. The recovered power is fed back directly to the power bus after the voltage is adjusted by the DC-DC conversion circuit.

[0044] In terms of circuit connection, the electrical energy (usually low-voltage DC) generated by the thermoelectric conversion unit (TEG chip) first passes through a high-efficiency DC-DC conversion circuit. This DC-DC conversion circuit is used to boost or stabilize the unstable recovery voltage to a voltage level that matches the internal power bus of the terminal. The adjusted recovery energy is directly fed back to the power bus, which can supply power to other loads in the system in real time or provide micro-current charging to the battery. The direct connection reduces energy loss in the intermediate storage stage and improves the utilization efficiency of the recovery energy.

[0045] Furthermore, the communication module includes a satellite communication submodule and a terrestrial mobile communication submodule; the control unit is configured to perform service offloading or seamless switching between the satellite communication link and the terrestrial mobile communication link according to the network status and instructions from the power management unit.

[0046] The control unit (or the converged communication protocol stack running on it) can intelligently perform service data splitting between the satellite communication link and the terrestrial mobile communication link (for example, sending large amounts of background data synchronously to the satellite link and sending real-time voice data to the terrestrial link) or seamlessly switch when necessary, based on real-time satellite and terrestrial network signal quality, link status, service requirements (such as bandwidth and latency requirements), and energy status instructions from the energy management unit. This converged access capability, combined with energy recovery management, enables the terminal to further optimize its energy consumption from the network side while ensuring communication performance.

[0047] Through the above steps, this utility model, by introducing a thermoelectric conversion unit, transforms waste heat, which is considered harmful and must be dissipated in traditional terminals, into reusable energy, thus achieving closed-loop management of energy flow. Specifically, when the terminal is working, the heat generated by the core heating element (such as the PA) is conducted to the hot end of the TEG plate attached to it. The TEG plate uses the temperature difference between itself and the external heat dissipation surface (cold end) to generate a Seebeck voltage, outputting recovered electrical energy. This electrical energy is directly fed back to the power system after being conditioned by a DC-DC circuit. At the same time, the energy management unit senses the system's energy input and output (battery charge and recovered power) in real time and intelligently adjusts the communication accordingly. The strategy involves allowing the terminal to operate in a higher power consumption state for a short period when there is sufficient power and a large data transmission requirement. Although power consumption increases, the power recovered by the TEG also increases proportionally, achieving active energy management by "trading high power consumption for high bandwidth and high energy recovery". When the power is low, the terminal is forced to switch to a low power consumption mode to extend standby time. Through the above process, this invention fundamentally changes the relationship between the terminal and energy, thereby improving the energy utilization efficiency of the terminal at the hardware level, extending its continuous working time in scenarios without external power supply, and helping to simplify the passive heat dissipation system, thus achieving miniaturization and weight reduction of the terminal.

[0048] Example 2

[0049] Optionally, this embodiment provides a basic space-ground integrated communication terminal that can access broadband satellite links, which realizes the basic functional architecture of waste heat recovery.

[0050] The terminal mainly includes: a communication module, a control unit, a power supply module, a thermoelectric conversion unit, and an energy management unit.

[0051] The communication module includes a satellite communication radio frequency front-end and a terrestrial mobile communication (such as 5G) radio frequency front-end, used to establish a wireless connection with broadband satellites in space or ground base stations according to the instructions of the control unit, and to send and receive data; the control unit is usually a processor or system-on-a-chip with built-in communication protocol stack software, which is responsible for processing network protocols, scheduling communication services, and controlling the working mode of the communication module; the power module is usually a rechargeable lithium battery pack and its management circuit, providing a stable voltage for all power-consuming components in the terminal.

[0052] The key improvement of this utility model lies in the addition of a thermoelectric conversion unit and an energy management unit.

[0053] The thermoelectric conversion unit uses a standard-sized thermoelectric generator (TEG). One side (hot end) of the TEG is tightly bonded to the metal casing of the radio frequency power amplifier (PA) in the communication module, the largest heat source inside the terminal, through a high thermal conductivity adhesive, forming good thermal coupling. The other side (cold end) of the TEG is tightly connected to the heat dissipation fins on the inner wall of the terminal's metal casing through another thermally conductive aluminum substrate. When the PA is working, it generates high temperature (e.g., 80°C), while the terminal casing maintains a relatively low temperature by exchanging heat with the outside air (e.g., 25°C) through the heat dissipation fins, thereby establishing a significant temperature difference (ΔT) on both sides of the TEG.

[0054] According to the Seebeck effect, this temperature difference ΔT will generate a potential difference (voltage) inside the TEG sheet, and its open-circuit voltage... It can be approximated as:

[0055]

[0056] Where S is the Seebeck coefficient (in V / K) of the thermoelectric material pair used; when a load is connected, the TEG sheet can output current to realize the direct conversion of thermal energy into electrical energy; in this embodiment, the electrical energy (DC) output by the TEG sheet is led out through a wire.

[0057] The energy management unit is a standalone microcontroller or a functional module integrated into the control unit. It connects to the output of the thermoelectric conversion unit via its analog-to-digital converter (ADC) pin to collect voltage and current information of the recovered electrical energy, thereby calculating the real-time recovered power. Simultaneously, the unit's communication interface (such as I2C or SMBus) communicates with the power module's battery management chip to obtain the battery's remaining power. .

[0058] The energy management unit operates a decision-making logic that periodically compares the recovered power. and battery power Relationship with preset threshold; set a low battery threshold. When detected When the power management unit generates an "energy saving mode" command, it sends it to the control unit via the control bus. After receiving the command, the control unit adjusts the parameters of the communication module. For example, it may command the module to reduce the transmission power of the satellite link by one level, or force it to prioritize the use of the terrestrial network (which usually consumes less power than the satellite link) when a connection to the terrestrial network is available, in order to reduce overall energy consumption and prioritize ensuring battery life.

[0059] This embodiment achieves active energy recovery of waste heat in a space-ground integrated terminal for the first time through the most basic "heat generation-power generation-sensing-control" link, and uses it as a control input for the system power consumption status, breaking the traditional terminal's mode of only unidirectional energy consumption.

[0060] Example 3

[0061] Optionally, this embodiment further optimizes the thermal coupling structure and expands the waste heat recovery source based on embodiment 2, thereby improving the recovery efficiency and system integration.

[0062] In this embodiment, the heating element coupled to the thermoelectric conversion unit includes not only the radio frequency power amplifier (PA), but also the main processor chip in the control unit; the main processor chip also generates considerable heat when performing a large amount of data encoding and decoding and protocol processing.

[0063] To achieve more efficient and compact thermal management, this embodiment employs an integrated packaging design. Specifically, the power amplifier (PA) and the main processor chip are mounted side-by-side on the same high thermal conductivity ceramic substrate (such as aluminum nitride ceramic). Then, a thermoelectric generator (TEG) chip of matching size is directly sintered or bonded to the back of the ceramic substrate using a high-performance thermal interface material. In this way, the heat generated by the PA and the main processor chip is efficiently conducted through the ceramic substrate to the entire hot end surface of the TEG chip, increasing the effective heat conduction area. The cold end of the TEG chip is sintered or bonded to another copper heat spreader, which is then connected to a large-area metal shell (as a heat dissipation surface) on the terminal housing via heat pipes or direct mechanical fixation.

[0064] This integrated packaging structure greatly reduces the thermal resistance from the heat source to the TEG chip, ensuring long-term reliability of thermal contact under complex vibration environments, while also achieving a thinner and lighter module.

[0065] In terms of circuit connection, this embodiment clearly defines the power feedback path of the thermoelectric conversion unit; the power output from the TEG chip is first connected to a high-efficiency boost DC-DC converter circuit; this is because the voltage generated by the TEG under typical temperature differences is low (e.g., a few tenths of a volt), while the internal power bus voltage is typically 3.3V or 5V; the DC-DC converter circuit boosts and stabilizes the recovered low-voltage DC power to the bus voltage. The converted electrical energy is directly injected into the terminal's internal power bus, allowing the recovered electrical energy to be used immediately by any working load in the system (such as sensors, memory, etc.), achieving "on-demand use" and reducing secondary losses during battery charging and discharging.

[0066] Example 4

[0067] Optionally, this embodiment integrates the features of the aforementioned embodiments and elaborates on the intelligent decision-making logic of the energy management unit and its regulation of the working mode of the communication module, thus constituting a complete intelligent energy self-circulation system.

[0068] In this embodiment, the communication module explicitly includes a satellite communication submodule (supporting Ka-band) and a terrestrial mobile communication submodule (supporting 5G NR); the control unit runs a converged communication protocol stack and is capable of managing dual links.

[0069] The energy management unit is internally divided into two logical sub-units: the energy status monitoring sub-unit and the communication strategy scheduling sub-unit.

[0070] The energy state monitoring subunit continuously collects data.

[0071] Remaining battery power ;

[0072] The actual recovered power fed back to the power bus after passing through the DC-DC conversion circuit ;

[0073] Optionally, the approximate temperatures of the hot and cold ends of the TEG can also be monitored.

[0074] The communication strategy scheduling subunit has a pre-set strategy matrix. This strategy matrix no longer relies solely on a single low-battery threshold for on / off control, but rather on... and The system dynamically generates multi-gear control commands based on the combination of states; its decision-making logic can be formally described as follows:

[0075] High-energy state mode: when and (Indicating the terminal is operating under high load with good heat dissipation), the scheduling subunit generates a "performance enhancement" command; upon receiving the command, the control unit can instruct the communication module to take one or more of the following measures:

[0076] Increase the satellite link's transmit power to the maximum allowed value to achieve the highest uplink speed;

[0077] Switching the modulation and coding scheme (MCS) from QPSK to the more efficient 16QAM or even 64QAM can increase data throughput under the same bandwidth.

[0078] When performing large file background transmission tasks, even if the terrestrial network is available, the high bandwidth of the satellite link is used first, while the TEG chip is kept running under high temperature difference to maximize energy recovery and "store energy" for subsequent tasks.

[0079] Equilibrium mode: when When the signal strength is at a medium level (e.g., 30%~70%), the scheduling subunit generates a "standard optimization" instruction; the control unit then intelligently diverts services between the satellite and ground links based on the normal network signal quality and service latency requirements (e.g., video conferencing uses the low-latency ground link, while file synchronization uses the high-speed satellite link), and uses the nominal transmit power and MCS.

[0080] Energy-saving mode: when ,regardless High or low, the scheduling subunit generates an "extreme energy saving" command; the control unit will then take the following actions:

[0081] The communication module is forced to reduce the transmit power of all links to the minimum level required to maintain the connection.

[0082] Employ the most robust low-order MCS (such as BPSK / QPSK) to reduce energy waste caused by bit error retransmission;

[0083] Significantly extend the sleep period of the link when it is inactive;

[0084] Actively shut down unnecessary sensors or peripheral circuits.

[0085] In addition, the network switching and traffic splitting decisions of the control unit will also take into account the instructions of the energy management unit; for example, in energy-saving mode, even if the satellite link signal is slightly better than the terrestrial link, the control unit may prioritize the terrestrial link with lower power consumption in order to meet the primary goal of extending the system's endurance.

[0086] This embodiment introduces an intelligent dynamic strategy involving multiple states and parameters, enabling the terminal to proactively adjust its behavior (communication strategy) based on real-time energy "income and expenditure," upgrading from simply "extending standby time" to "maximizing communication utility within the energy budget," thus achieving deep synergy and optimization of energy management and communication performance at the system level.

[0087] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A space-ground integrated communication terminal capable of accessing broadband satellite links, characterized in that: include: The communication module is used to establish and maintain wireless link connections with broadband satellite networks and terrestrial mobile communication networks. The control unit is electrically connected to the communication module and is used to control the communication protocol processing and service data scheduling of the terminal. The power module is used to provide operating power to the terminal; A thermoelectric conversion unit, the hot end of which is thermally coupled to at least one pre-set heating element inside the terminal, and the cold end of which is thermally coupled to the external heat dissipation structure of the terminal, is used to generate electricity by utilizing the temperature difference between the heating element and the external environment. The energy management unit is electrically connected to the power output terminal of the thermoelectric conversion unit, the power module, and the control unit, respectively. The energy management unit is configured to: collect the recovered electrical energy information output by the thermoelectric conversion unit and the energy status information of the power supply module, and generate control commands based on the information to adjust the communication working mode of the communication module.

2. The space-ground integrated communication terminal capable of accessing a broadband satellite link according to claim 1, characterized in that: The thermoelectric conversion unit is a thermoelectric generator (TEG) chip; the heating element includes the radio frequency power amplifier (PA) in the communication module and / or the main processor chip in the control unit.

3. A space-ground integrated communication terminal capable of accessing a broadband satellite link according to claim 2, characterized in that: The thermoelectric generator (TEG) chip is tightly bonded to the package shell of the radio frequency power amplifier (PA) and / or the main processor chip via a thermally conductive substrate, forming an integrated package structure; the external heat dissipation structure includes heat dissipation fins or heat dissipation surfaces disposed on the terminal housing, and the cold end of the thermoelectric generator (TEG) chip is thermally connected to the heat dissipation fins or heat dissipation surfaces via a thermally conductive medium.

4. A space-ground integrated communication terminal capable of accessing a broadband satellite link according to claim 1, characterized in that: The energy management unit includes: An energy state monitoring subunit is used to monitor the remaining power of the power module and the actual recovered power of the thermoelectric conversion unit in real time. The communication strategy scheduling subunit is communicatively connected to the energy state monitoring subunit and the control unit, and is used to dynamically generate strategy instructions for adjusting the operating parameters of the communication module based on the remaining power and the actual recovered power.

5. A space-ground integrated communication terminal capable of accessing a broadband satellite link according to claim 4, characterized in that: The operating parameters of the communication module include at least one of the following: transmission power, data modulation and coding scheme, and link sleep period; the communication strategy scheduling subunit is configured to: generate a first type of strategy instruction to increase the transmission power and / or the order of the data modulation and coding scheme when the actual recovered power is higher than a preset power threshold; and generate a second type of strategy instruction to reduce the transmission power and / or extend the link sleep period when the remaining power is lower than a preset power threshold.

6. A space-ground integrated communication terminal capable of accessing a broadband satellite link according to claim 1, characterized in that: The power output terminal of the thermoelectric conversion unit is connected to the internal power bus of the terminal through a DC-DC conversion circuit. The recovered power is fed back directly to the power bus after the voltage is adjusted by the DC-DC conversion circuit.

7. A space-ground integrated communication terminal capable of accessing a broadband satellite link according to any one of claims 1-6, characterized in that: The communication module includes a satellite communication submodule and a terrestrial mobile communication submodule; the control unit is configured to perform service offloading or seamless switching between the satellite communication link and the terrestrial mobile communication link according to the network status and the instructions of the energy management unit.

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