Energy System

Abstract

This application provides an energy system. The energy system includes a control module, a processing module, a sampling module, and a battery module. A first terminal of the processing module is connected to the battery module, a second terminal of the processing module is connected to an external device, and a control terminal of the processing module is connected to the control module. The processing module can obtain control commands sent by the control module through the control terminal and convert the input voltage to obtain an output voltage according to the control commands. The sampling terminal of the processing module is connected to the input terminal of the sampling module. The output terminal of the sampling module is connected to the input terminal of the control module. The control module obtains electrical signals from the processing module through the sampling module via its input terminal. Based on these electrical signals, the control module generates control commands and sends the control commands to the processing module. The system of this application reduces device losses during power transmission and lowers system losses.

Description

Technical Field

[0001] This application relates to the field of energy storage, and more particularly to an energy system. Background Technology

[0002] With the rollout of 5G commercialization, the construction and deployment of 5G base stations face multiple pressures. Among them, the enormous energy consumption of 5G base stations is the biggest challenge in their construction.

[0003] In existing technologies, the modules in a 5G energy system are typically independent of each other. Such a 5G energy system usually includes an Energy Management System (EMS) to manage the various modules.

[0004] However, existing 5G energy systems often suffer from high complexity in their control logic. Summary of the Invention

[0005] This application provides an energy system to solve the problem of low system efficiency in the prior art.

[0006] In a first aspect, this application provides an energy system, including: a control module, a processing module, a sampling module, and a battery module;

[0007] The first end of the processing module is connected to the battery module, the second end of the processing module is connected to an external device, and the control end of the processing module is connected to the control module; the processing module is used to convert the input voltage input to the processing module according to the control command sent by the control module, and output the converted output voltage.

[0008] The sampling end of the processing module is connected to the input end of the sampling module, and the output end of the sampling module is connected to the input end of the control module.

[0009] The input terminal of the control module is connected to the output terminal of the sampling module, and is used to generate control commands based on the electrical signals of the processing module acquired by the sampling module; the output terminal of the control module is connected to the control terminal of the processing module, and is used to send the control commands to the processing module.

[0010] Optionally, the processing module includes: a relay, a DC-DC converter, and a rectifier;

[0011] The first terminal of the relay is the first terminal of the processing module and is connected to the battery module. The second terminal of the relay is connected to the first terminal of the DC-DC converter and the second terminal of the DC-DC converter is connected to the first terminal of the rectifier. The second terminal of the rectifier is the second terminal of the processing module and is connected to the external device.

[0012] Optionally, the control module includes: a core control unit, a circuit control unit, and a voltage control unit;

[0013] The input terminal of the core control unit is the input terminal of the control module, and the input terminal of the core control unit is connected to the output terminal of the sampling module;

[0014] The output terminal of the core control unit is connected to the input terminal of the circuit control unit, and the core control unit sends the control command to the circuit control unit; the output terminal of the circuit control unit is the output terminal of the control module, and the output terminal of the circuit control unit is connected to the relay; the circuit control unit generates circuit control command according to the control command and sends the circuit control command to the relay to control the relay to connect or disconnect.

[0015] The output terminal of the core control unit is connected to the input terminal of the voltage control unit, and the core control unit sends the control command to the voltage control unit. The output terminal of the voltage control unit is the output terminal of the control module, and the output terminal of the voltage control unit is connected to the DC-DC converter. The voltage control unit generates a voltage control command according to the control command and sends the voltage control command to the DC-DC converter to control the DC-DC converter to perform voltage conversion.

[0016] Optionally, the voltage control unit may send voltage control commands including four pulse width modulation waveforms.

[0017] Optionally, the system further includes: a security management module;

[0018] The first end of the safety management module is connected to the processing module, and the second end of the safety management module is connected to the battery module, so that the safety management module, the processing module and the battery module form a loop;

[0019] The control terminal of the security management module is connected to the output terminal of the control module, and is used to obtain the control commands generated by the control module, and control the security management module to connect or disconnect according to the control commands.

[0020] Optionally, the control module further includes: a safety control unit;

[0021] The input terminal of the safety control unit is connected to the core control unit of the control module. The safety control unit is used to obtain the control commands sent by the core control unit and generate MOS control commands according to the control commands.

[0022] The output terminal of the safety control unit is connected to the control terminal of the safety management module, and is used to send the MOS control command to the safety management module to control the charging and discharging MOS in the safety management module to turn on or off.

[0023] Optionally, the sampling module includes an integrated sampling unit, a time-division transmission unit, and a battery sampling unit;

[0024] The input terminal of the integrated sampling unit includes multiple pins, each pin being connected to a detector in the processing module. The integrated sampling unit is used to acquire electrical signals in the processing module. The output terminal of the integrated sampling unit is connected to the input terminal of the time-division transmission unit and is used to transmit the detected electrical signals to the time-division transmission unit.

[0025] The input terminal of the battery sampling unit is connected to the battery module to acquire the electrical signal of the battery module; the output terminal of the battery sampling unit is connected to the input terminal of the time-division transmission unit to transmit the detected electrical signal to the time-division transmission unit.

[0026] The output terminal of the time-division transmission unit is connected to the input terminal of the control module, and is used to transmit the electrical signal to the control module in a time-division manner.

[0027] Optionally, the system further includes: an isolation module;

[0028] The first end of the isolation module is connected to the processing module, and the second end of the isolation module is connected to the control module.

[0029] Optionally, the isolation module includes at least one of an optocoupler isolation device, a power isolation device, a driver chip isolation device, and a communication isolation device.

[0030] Optionally, the system further includes: a voltage gating module;

[0031] The first terminal of the voltage gating module is connected to the control module; the second terminal of the voltage gating module is connected to the battery module; the third terminal of the voltage gating module is connected to the second terminal of the processing module; the voltage gating module is used to supply power to the control module.

[0032] Optionally, the external device is a lead-acid battery installed in a 5G base station, and the lead-acid battery is connected to the processing module to realize the cascade utilization of the lead-acid battery.

[0033] Secondly, this application provides an energy system control method applied to a control module, comprising:

[0034] The processing module acquires device information and electrical signals from external devices.

[0035] Based on the device information, determine the target output voltage;

[0036] Based on the input voltage and the target output voltage, control commands are generated and sent.

[0037] Optionally, generating control commands based on the input voltage and the target output voltage includes:

[0038] The voltage adjustment value is determined based on the input voltage and the target output voltage;

[0039] Based on the voltage adjustment value, a voltage control command is generated;

[0040] The voltage control command is sent to the DC-DC converter, which instructs the current converter to convert the input voltage into the target output voltage.

[0041] Optionally, generating control commands based on the input voltage and the target output voltage includes:

[0042] When the input voltage and / or input current is greater than or equal to a first threshold and less than or equal to a second threshold, a circuit control command is generated;

[0043] The circuit control command is sent to the relay, and the circuit control command is used to instruct the relay to be connected.

[0044] Optionally, generating control commands based on the input voltage and the target output voltage includes:

[0045] The input terminal of the input voltage is obtained, wherein the input terminal is either the first terminal of the processing module or the second terminal of the processing module;

[0046] When the input voltage and / or input current is greater than the second threshold, and the input terminal is the first terminal of the processing module, a discharge MOS control command is generated, which is used to control the discharge MOS to disconnect.

[0047] When the input voltage is greater than or equal to the first threshold and the input terminal is the second terminal of the processing module, a charging MOS control command is generated, which is used to control the charging MOS to disconnect.

[0048] The charging MOS control command or the discharging MOS control command is sent to the charging and discharging MOS of the safety management module.

[0049] The energy system provided in this application includes a control module, a processing module, a sampling module, and a battery module. A first terminal of the processing module is connected to the battery module, a second terminal is connected to an external device, and a control terminal is connected to the control module. The processing module can obtain control commands sent by the control module through the control terminal and convert the input voltage to obtain an output voltage according to the control commands. The sampling terminal of the processing module is connected to the input terminal of the sampling module. The output terminal of the sampling module is connected to the input terminal of the control module. The sampling module is used to collect electrical signals from the processing module and send these electrical signals to the control module. The control module obtains these electrical signals through the input terminal connected to the output terminal of the sampling module. The control module generates control commands based on these electrical signals. By outputting the control commands to the control terminal of the processing module through its output terminal, the control module achieves the effect of reducing device losses during power transmission and lowering system losses. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This application provides a schematic diagram of the structure of an energy system according to an embodiment of the present application;

[0052] Figure 2 This application provides a schematic diagram of the structure of an energy system according to an embodiment of the present application;

[0053] Figure 3 This application provides a schematic diagram of the structure of an energy system according to an embodiment of the present application;

[0054] Figure 4 This application provides a schematic diagram of the structure of an energy system according to an embodiment of the present application;

[0055] Figure 5 This application provides a schematic diagram of the structure of an energy system according to an embodiment of the present application;

[0056] Figure 6This application provides a schematic diagram of the structure of an energy system according to an embodiment of the present application;

[0057] Figure 7 A circuit structure diagram of an energy system provided in one embodiment of this application;

[0058] Figure 8 A flowchart of an energy system control method provided in an embodiment of this application. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate. For example, without departing from the scope of this document, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0061] Depending on the context, the word "if" as used here can be interpreted as "when," "when," or "in response to determination."

[0062] Furthermore, as used herein, the singular forms “a,” “one,” and “the” are intended to also include the plural forms, unless the context indicates otherwise.

[0063] It should be further understood that the terms “comprising” or “including” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups.

[0064] The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Therefore, “A, B, or C” or “A, B, and / or C” means “any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C”. Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0065] With the promotion of 5G commercialization, the construction and deployment of 5G base stations face multiple pressures. To address the energy challenges posed by 5G deployment, 5G energy solutions must meet requirements such as low-cost deployment, rapid construction, high energy efficiency, smooth evolution, and simple operation and maintenance. Low-cost deployment refers to the requirement of "three no's" in 5G energy engineering construction. These "three no's" specifically include "no additional cabinets," "no modification to mains power," and "no modification to power distribution (including thick wiring)." This low-cost deployment achieves the requirements of utilizing existing site cabinets or relocating old cabinets, without adding cabinets or increasing land area. Rapid construction means that 5G energy deployment needs to be flexible and fast. Modifications to existing power supply sites should minimize changes to the existing power supply's size or appearance, avoiding the time and cost of renegotiation. New sites should be established with the smallest possible footprint and the simplest and fastest installation method. High energy efficiency means that 5G energy needs to achieve energy saving across the entire chain. Energy-saving solutions for single components are no longer sufficient to support the energy-saving requirements of 5G sites. Therefore, energy conservation at 5G sites requires a comprehensive energy-saving solution considering the entire network and the entire site. Smooth evolution refers to enabling each site's energy system to smoothly evolve towards 5G. Simplified operation and maintenance refers to more efficient and straightforward operation and maintenance methods for 5G energy requirements. With the number of 5G sites doubling compared to 4G sites, operators cannot afford the high costs of traditional operation and maintenance methods; therefore, more efficient and simpler 5G energy operation methods are needed to control costs.

[0066] Among the many requirements mentioned above, addressing the enormous energy consumption of 5G base stations is the biggest challenge in their construction. Multiple-Input Multiple-Output (MIMO) energy systems offer a solution to this 5G energy consumption problem. Existing MIMO energy systems used in 5G base stations can include multiple input modules and multiple output modules, which are typically independent of each other. Input modules are used to charge battery modules, while output modules are used to operate the load. For example, existing 5G base stations charge battery modules using photovoltaic modules, direct current-to-direct current (DC-DC) converters, and rectifier modules. In this 5G base station, the photovoltaic, DC-DC, and rectifier modules are independent, each with its own controller and independent processing. Input modules can include wind power modules, single-phase mains input modules, and generator modules. Output modules can include loads. In this MIMO energy system, power can be distributed to the smart battery modules via a power distribution module, and long-distance transmission can be achieved via a high-voltage boost module to meet requirements such as unaltered power distribution. Furthermore, the independent nature of the modules within a 5G base station necessitates additional wiring between these modules to manage their inputs and outputs. In some cases, a dedicated EMS (Energy Management System) is required to control the 5G base station. This control logic is typically highly complex, and the energy in this system often undergoes multiple conversion stages, potentially leading to low efficiency and high failure rates.

[0067] In this MIMO energy system, the battery module acts as a UPS, storing energy during idle periods and rapidly providing power during power outages or when high power demands arise. A MIMO energy system may include a Battery Management System (BMS), bidirectional DC-DC modules, and power distribution modules. These modules operate independently. This independence increases the hardware cost of the MIMO system. The increased hardware also leads to higher power consumption costs. Furthermore, the increased hardware complicates wiring, further increasing maintenance costs. Moreover, the independence of these modules means they typically operate with their own independent controllers and control logic. In a MIMO energy system, task execution usually requires coordination between multiple modules. The independent controllers and control logic between modules complicate system task execution and power transfer, resulting in a higher system failure rate and further increasing maintenance costs. Additionally, because the BMS is separate from the other modules, the on / off control of the battery charging and discharging circuits takes a long time in the event of a sudden system failure, and in extreme cases, it may not effectively protect the battery. Furthermore, the DC-DC conversion efficiency in the battery modules of current MIMO power systems is low. While this can increase battery capacity, it cannot raise the battery voltage to a level suitable for remote transmission. In addition, because the modules in current MIMO power systems are independent, the resulting systems are large and inconvenient to install and apply. Moreover, this independent module design can easily lead to redundancy in functionality between modules.

[0068] To address the aforementioned problems, this application proposes an energy system. This application implements all the functions described above in an energy system using a novel topology. In this energy system, the controllers of each module are integrated, and a single multi-channel bidirectional DC-DC control module is used to control all other modules. By using this multi-channel bidirectional DC-DC control module, this application eliminates the need for interconnection in the control logic between modules, reduces the complexity of the control logic, reduces wiring between modules, lowers hardware costs, and reduces energy consumption.

[0069] This application optimizes multiple main control chips in a 5G base station into a single main control chip within a multi-channel bidirectional DC-DC control module. Since a single main control chip typically has only 3-4 AD sampling channels, this reduction in the number of main control chips directly leads to a reduction in the number of AD sampling channels. Each module in the energy storage system needs to acquire 3-4 electrical signals. Previously, these signals were acquired and processed by the control signals of each module, eliminating the problem of insufficient pins on the main control chip. However, in this application, the main control chip in the energy system needs to acquire more than a dozen electrical signals, which is clearly not directly achievable with this design. To address this issue, this application incorporates an integrated ADC sampling chip into the energy storage system. This integrated ADC sampling chip can achieve microsecond-level data acquisition, and a single integrated ADC sampling chip has more than ten or even thirty AD sampling channels. This integrated ADC sampling chip can transmit the signals acquired by the AD channels to a time-division sampling chip via bus communication. The time-division sampling chip sequentially sends these dozen or so electrical signals to 3-4 pins of the main control chip, enabling the main control chip to acquire these signals.

[0070] This application eliminates the need for a separate DC-DC converter in the smart battery module and instead uses a bidirectional DC-DC converter with bidirectional control for voltage conversion. This optimization reduces power transmission from a two-stage DC-DC converter to a single-stage one, decreasing device losses, system losses, and wiring losses between multiple modules. Furthermore, this DC-DC converter can be controlled using a multi-channel bidirectional DC-DC control module. This control enables the direct boosting of the battery voltage via the DC-DC converter for high-voltage output when high voltage is required, further enhancing the practicality of the energy storage system.

[0071] In the energy system of this application, the MOSFET used to control the on / off state of the charging and discharging circuit is directly connected in series with the battery charging and discharging circuit. The BMS can collect electrical signals such as the voltage of individual battery cells, the battery charging and discharging current, and the voltage and current of multiple DC-DC converters. Furthermore, this application also includes a chip with time-division sampling functionality. The BMS module can acquire the aforementioned electrical signals through this time-division sampling chip to achieve real-time monitoring of the entire energy system's operating status. When the system experiences sudden events such as overvoltage, overcurrent, or short circuits, the BMS can control the charging and discharging MOSFETs to turn them on or off. The use of this BMS can reduce the time from the occurrence of a sudden event to the disconnection of the battery charging and discharging MOSFETs, thus improving the safety of the entire energy system.

[0072] The BMS main control and MIMO main control are independent. The BMS control chip is the main control chip of the entire system. The system design includes a time-division sampling output chip, and the operating status of the entire system can be monitored in real time by the BMS main control system. The multi-channel DC-DC control system is isolated by isolation devices to avoid the energy system from affecting the multi-channel DC-DC control system. Utilizing the remaining resources of the BMS main control chip and the MIMO main control chip, various parameters of the energy system can be set. It can communicate with the outside world via CAN and 485 communication methods. No dedicated EMS board is required for energy management. The control logic is clear, the power transmission path is single, and the security is high.

[0073] This application achieves the effect of minimizing the number of main control chips used without affecting the operation of the energy storage system, thereby reducing the system's dependence on high-end main control chips and lowering costs.

[0074] In addition, the entire system is based on battery design, and heat dissipation is achieved by adding a heat dissipation panel to the surface of the battery. The final product and the battery are integrated, with a small overall size, making it easy to install and disassemble, and simple and convenient to maintain.

[0075] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0076] Figure 1 A schematic diagram of the structure of an energy system according to an embodiment of this application is shown. Figure 1 As shown, the energy system 10 in this embodiment may include: a control module 11, a processing module 12, a battery module 13, and a sampling module 14.

[0077] In this embodiment, in the energy system 10, the first terminal of the processing module 12 is connected to the battery module 13, the second terminal of the processing module 12 is connected to an external device, and the control terminal of the processing module 12 is connected to the control module 11. The processing module 12 is used to convert the input voltage to the processing module 12 according to the control command sent by the control module 11, and output the converted output voltage. The sampling terminal of the processing module 12 is connected to the input terminal of the sampling module 14.

[0078] Upon receiving the control command, the processing module 12 can convert the input voltage to obtain the output voltage. The control command includes the output voltage value. When the first terminal of the processing module 12 is the input terminal, the second terminal is the output terminal. Conversely, when the second terminal is the input terminal, the first terminal is the output terminal. The use of the processing module 12 enables voltage conversion between the battery module 13 and the external device. Furthermore, the use of the processing module 12 reduces the number of voltage conversions between the battery module 13 and the external device from two to one, reducing power loss during transmission and improving energy efficiency.

[0079] For example, assuming the first terminal of processing module 12 is an input terminal, the second terminal of processing module 12 requires a high-voltage output. The voltage of battery module 13 is typically 50V. In the prior art, battery module 13 is usually housed within a battery module intelligent management module. Battery module 13 requires a voltage conversion via the battery module intelligent management module. Subsequently, after outputting the voltage to the module containing the external device, the voltage needs to be converted again within that module to ensure the external device receives a high voltage that meets its requirements. In this application, however, the energy system 11 can directly achieve the two-stage voltage conversion required in the prior art through processing module 12, directly converting the voltage of battery module 13 from 50V to the high voltage required by the external device, greatly improving voltage output efficiency. This is simple, convenient, and highly practical. In this application, the reduction from two-stage to one-stage voltage conversion mainly relies on the use of control module 11. This control module 11 can determine the output voltage based on the type of external device, thereby achieving a one-time voltage conversion. Furthermore, the energy system in this application eliminates the control circuits of each independent module in the prior art, as well as the wiring between modules and between modules and the battery, thereby reducing system costs and minimizing wiring losses between multiple modules.

[0080] In one implementation, the energy system 10 may include N processing modules 12, where N is a positive integer. For example, when N is 3, the connection between these three processing modules 12 and the control module 11, battery module 13, and sampling module 14 can be as follows: Figure 2As shown. The external devices connected to the N processing modules 12 may include external power supply equipment and / or loads. The external power supply equipment may include photovoltaic modules, wind power modules, mains power supply modules, generator modules, etc. The loads are typically DC loads. Each of the N processing modules 12 can be connected to one external device. The external devices connected to the N processing modules 12 can be the same external device. Alternatively, the external devices connected to the N processing modules 12 can be different external devices. When an external device is connected to a processing module 12, it can be directly connected to the wiring side; the wiring process is simple and convenient.

[0081] For example, external device 3 can be a photovoltaic panel, which can be connected to a third processing module 12. The photovoltaic voltage output by the photovoltaic panel can be converted by the third processing module 12. This processing module 12 can convert the photovoltaic voltage value into a battery voltage value. Since the photovoltaic voltage value after conversion by the processing module 12 is equal to the battery voltage value, when a load is present, the photovoltaic voltage output by the photovoltaic panel will not charge the battery module 13, but will prioritize powering other loads. For example, external device 1 can be a load. This load is connected to the first processing module 12. When the power consumption of the load is less than or equal to the output power of the photovoltaic panel, the load can be powered solely by the photovoltaic panel. When the power consumption of the load is greater than the output power of the photovoltaic panel, the photovoltaic panel cannot provide the power required by the load alone. Therefore, when the power consumption of the load is greater than the output power of the photovoltaic panel, the battery module 13 discharges to provide power to the load in addition to the photovoltaic panel providing power to the load.

[0082] The sampling module 14 has its input terminal connected to the processing module 12, and its output terminal connected to the input terminal of the control module 11. The sampling module 14 is used to acquire the electrical signal from the processing module 12 and output the electrical signal to the control module 11.

[0083] In one example, the sampling module 14 includes an integrated sampling unit 141, a time-division transmission unit 142, and a battery sampling unit 143. The connections between the various units in the sampling module 14 can be as follows: Figure 3As shown. The input terminal of the integrated sampling unit 141 can be connected to the processing module 12. The integrated sampling unit 141 is used to acquire electrical signals from the processing module 12. The output terminal of the integrated sampling unit 141 is connected to the input terminal of the time-sharing transmission unit 142. The input terminal of the battery sampling unit 143 is connected to the battery module 13. The battery sampling unit 143 is used to acquire electrical signals from the battery module 13. The output terminal of the battery sampling unit 143 is connected to the input terminal of the time-sharing transmission unit 142. The integrated sampling unit 141 and the battery sampling unit 143 can transmit the detected electrical signals to the time-sharing transmission unit 142. The output terminal of the time-sharing transmission unit 142 is connected to the input terminal of the control module 11. Since the number of pins for user data acquisition in the control chip of the control module 11 is limited, the time-sharing transmission unit 142 can sequentially send the received electrical signals from the integrated sampling unit 141 and the battery sampling unit 143 to the control module 11.

[0084] In one implementation, each processing module 12 may include multiple detectors. These detectors may be voltage detectors, current detectors, etc. For system safety reasons, it is necessary to monitor the voltage and current across the processing module 12. That is, these detectors may be respectively set at the first and second terminals of the processing module 12. For example, the first terminal of a processing module 12 may be equipped with a voltage detector and a current detector. Similarly, the second terminal of the processing module 12 may also be equipped with a voltage detector and a current detector.

[0085] In one implementation, the integrated sampling unit 141 can be an ADC sampling chip. This ADC sampling chip may include multiple pins. Each pin of the ADC sampling chip can be connected to a detector in a processing module 12 to acquire the electrical signal detected by that detector. A conventional ADC sampling chip typically includes 3-4 pins. When N processing modules 12 are included, a single ADC chip obviously cannot connect to every detector in each processing module 12. Therefore, this implementation uses an ADC sampling chip. This ADC sampling chip can have more pins to meet the requirements of connecting to every detector in each processing module 12. The electrical signal may include voltage signals and current signals.

[0086] In one implementation, the battery sampling unit 143 may include a battery sampling chip (analog frontend, AFE). The AFE chip can be connected to each lithium battery in the battery module 13 to acquire electrical signals such as input current, output voltage, output current, and output voltage of each lithium battery.

[0087] The input terminal of the control module 11 is connected to the output terminal of the sampling module 14. The control module 11 can acquire electrical signals from the battery module and the processing module from the sampling module 14. The control module 11 can generate control commands based on the electrical signals acquired by the processing module 12 from the sampling module 14. The output terminal of the control module 11 is connected to the control terminal of the processing module 12, and is used to send the control commands to the processing module 12.

[0088] In one implementation, the control module 11 may further include a sampling unit. The input terminal of the sampling unit is the input terminal of the control module 11. The input terminal of the sampling unit is connected to the sampling module 14. The output terminal of the sampling unit is connected to the control unit 112 of the control module 11.

[0089] In one example, the external device may include at least one of the following: a lead-acid battery, a photovoltaic module, a wind power module, and a mains power input module, all installed in a 5G base station. The lead-acid battery may be the same battery configured for the base station during 4G deployment. When the external device is the lead-acid battery, it can be connected to the processing module 12, enabling its tiered utilization. Full utilization of the lead-acid battery is crucial for the smooth evolution of 5G energy. Therefore, when multiple processing modules 12 are included, the lead-acid battery can be fixedly connected to one of them. After the lead-acid battery is connected to the processing module 12, when the battery module 13 needs charging, the control module 11 can control the processing module 12 to supply power to the battery module 13 via the lead-acid battery. Alternatively, when other processing modules 12 are connected to a load, the control module 11 can control both the processing module 12 connected to the lead-acid battery and the processing module 12 connected to the load to achieve constant voltage power supply from the lead-acid battery to the load. For example, the lead-acid battery can be used as an external device 2.

[0090] In one example, the energy system 10 may also include a voltage gating module 16. For example... Figure 4As shown, the first terminal of the voltage selection module 16 is connected to the control module 11. The second terminal of the voltage selection module 16 is connected to the battery module 13. The third terminal of the voltage selection module 16 is connected to the second terminal of the processing module 12. When N processing modules 12 are included, the third terminal to the (N+3)th terminal of the voltage selection module 16 are respectively connected to the second terminals of the N processing modules 12. The voltage selection module 16 can obtain the voltages from the second terminal to the (N+3)th terminal. The voltage selection module 16 can select the terminal with the highest voltage to connect to its first terminal. When the voltage selection module 16 selects one terminal from the second terminal to the (N+3)th terminal to connect to its first terminal, that connected terminal will supply power to the control module 11 through the voltage selection module 16. For example, when the second terminal of the voltage selection module 16 is connected to its first terminal, the battery module corresponding to the second terminal will supply power to the control module through the voltage selection module 16. The control module 11 may also include a power supply unit 115. The power supply unit 115 is used to obtain external electrical energy and deliver the electrical energy to the various units in the control module 11.

[0091] In one implementation, the voltage selection module 16 can be a diode voltage selection circuit. The use of this diode voltage selection circuit ensures that the control module 11 can be powered normally regardless of whether the battery module 13 is in operation.

[0092] For example, when only external device 1 is in use and it receives high voltage, since the output voltage of battery module 13 is 50V and the output voltage of the second terminal of processing module 12 is high voltage, voltage gating module 16 will connect the second terminal of processing module 12. After the voltage of battery module 13 passes through processing module 12, it outputs voltage to external device 1 and also outputs voltage to control module 11 through voltage gating module 16.

[0093] In one example, a heat dissipation panel may be mounted on the surface of the battery module 13. This heat dissipation panel is used to dissipate heat from the battery module 13. The heat dissipation panel is integrated with the battery. Batteries with this heat dissipation panel configuration have advantages such as small overall size, ease of installation and removal, and simple and convenient maintenance.

[0094] The energy system provided in this application includes a control module, a processing module, a sampling module, and a battery module. The first end of the processing module is connected to the battery module, the second end is connected to an external device, and the control end of the processing module is connected to the control module. The processing module can obtain control commands sent by the control module through the control end and convert the input voltage to obtain the output voltage according to the control commands. The sampling end of the processing module is connected to the input end of the sampling module. The output end of the sampling module is connected to the input end of the control module. The sampling module is used to collect electrical signals from the processing module and send these electrical signals to the control module. The control module obtains these electrical signals through the input end connected to the output end of the sampling module. The control module generates control commands based on these electrical signals. The control module outputs the control commands to the control end of the processing module through its output end. In this application, by using this processing module, the voltage conversion between the battery module and the external device is reduced from two transformations to one, reducing device losses during power transmission and lowering system losses. The energy system in this application eliminates the control circuits of each independent module in the prior art, as well as the wiring between modules and between modules and the battery, thereby reducing system costs and minimizing wiring losses between multiple modules.

[0095] Figure 5 A schematic diagram of the structure of an energy system according to an embodiment of this application is shown. Figures 1 to 4 Based on the illustrated embodiments, as Figure 5 As shown, in this embodiment, the control module 11 of the energy system 10 may include a voltage control unit 111, a core control unit 112, and a circuit control unit 113. The processing module 12 may include a relay 121, a DC-DC converter 122, and a rectifier 123.

[0096] The input terminal of the core control unit 112 is the input terminal of the control module 11, and the input terminal of the core control unit 112 is connected to the output terminal of the sampling module 14.

[0097] In one example, the core control unit 112 may include an AD sampling chip. This AD sampling chip is connected to the sampling module 14. The AD sampling chip is used to acquire the electrical signals sent from the sampling module 14 to the control module 11. The AD sampling chip can organize these electrical signals and then send them to the control chip in the core control unit 112. The control chip will process these electrical signals and generate control commands.

[0098] The output of the core control unit 112 is connected to the input of the circuit control unit 113. The core control unit 112 can send control commands to the circuit control unit 113. The output of the circuit control unit 113 is the output of the control module 11. The output of the circuit control unit 113 can be connected to the relay 121 in the processing module 12. The circuit control unit 113 can further generate circuit control commands based on the control commands generated by the core control unit 112. The circuit control unit 113 can send the circuit control commands to the relay 121. The circuit control commands are used to control the relay 121 to be connected or disconnected. For example, when the electrical signal collected by the sampling module 14 indicates that there is an input voltage in the processing module, the circuit control command can be used to instruct the relay 121 to be connected. When the electrical signal collected by the sampling module 14 indicates that there is no input voltage in the processing module, the circuit control command can be used to instruct the relay 121 to be disconnected. When multiple processing modules are included, if the relay is disconnected, the circuit containing the relay is disconnected. Otherwise, if the relay is connected, the circuit containing the calculator is connected.

[0099] For example, when including such Figure 2 As shown, the system includes three processing modules 12. At the first moment, none of the three processing modules 12 are connected to any external device. At the first moment, the relays 121 of all three processing modules 12 are in the open state. At the second moment, the first processing module 12 is connected to the external device 1. At the second moment, the core control unit 112 detects the input voltage of the first processing module 12. The circuit control unit 113 generates a circuit control command based on this input voltage. This circuit control command is sent to the relay 121 of the first processing module 12, turning on the circuit of the first processing module 12. Furthermore, at the second moment, the circuits of the other two processing modules 12 remain in the open state.

[0100] The output of the core control unit 112 can also be connected to the input of the voltage control unit 111. The output of the voltage control unit 111 is the output of the control module 11. The output of the voltage control unit 111 is connected to the DC-DC converter 122 in the processing module 12. When the voltage control unit 111 receives a control command from the core control unit 112, it can further generate a voltage control command based on the control command. The voltage control unit 111 can then send the voltage control command to the DC-DC converter 122. This voltage control command can control the DC-DC converter 122 to perform voltage conversion.

[0101] In one implementation, the sampling module 14 can also acquire the device type of the external device. The core control unit 112 stores a preset voltage conversion table. The core control unit 112 can determine the target output voltage based on the device type and the preset voltage conversion table. The core control unit 112 can generate control commands based on the target output voltage and the input voltage. For example, when the external device is a photovoltaic panel, the voltage control unit 111 acquires an input voltage of 300V. The voltage control unit 111 can determine the target output voltage as a battery voltage of 50V based on the preset voltage conversion table. The voltage control unit 111 can generate control commands based on the input voltage of 300V and the target output voltage of 50V.

[0102] In one implementation, the voltage control command may include four pulse width modulation (PWM) waveforms. The voltage control unit 111 can determine the duty cycle of the PWM waveforms based on the control command. For example, when the energy system 10 includes N processing modules 12, the voltage control unit 111 can be connected to 4N output data lines. Each set of four data lines can be connected to a DC-DC converter 122. For example, lines 1-4 can be connected to the first DC-DC converter 122, and lines 5-8 can be connected to the second DC-DC converter 122. The DC-DC converter 122 can perform voltage conversion based on the duty cycle of the received PWM waveforms to determine the converted voltage value.

[0103] The relay 121 has its first terminal connected to the processing module 12. This first terminal is also connected to the battery module 13. The second terminal of the relay 121 is connected to the first terminal of the DC-DC converter 122. The control terminal of the relay 121 is connected to the output terminal of the circuit control unit 113 of the control module 11. The second terminal of the DC-DC converter 122 is connected to the first terminal of the rectifier 123. The control terminal of the DC-DC converter 122 is also connected to the output terminal of the voltage control unit 111 of the control module 11. The second terminal of the rectifier 123 is connected to the processing module 12. This second terminal is also connected to an external device. The rectifier 123 is used to rectify the voltage input / output of the second terminal of the processing module 12 when the external device uses AC power. For example, when the external device uses AC power, the rectifier 123 rectifies the AC power to DC before it enters the DC-DC converter 122. Specifically, this rectifier can be a diode rectifier circuit. This diode rectifier circuit has no effect on either the DC input or output. When AC input is applied, the diode rectifier circuit can convert AC to DC, and then the DC-DC converter 122 can step down the voltage to the battery voltage or other voltage values.

[0104] The control module in the energy system provided in this application may include a voltage control unit, a circuit control unit, and a circuit control unit. The input terminal of the core control unit is also the input terminal of the control module. The input terminal of the core control unit is connected to the output terminal of the sampling module. The output terminal of the core control unit is connected to the input terminal of the circuit control unit and sends control commands to the circuit control unit. The output terminal of the core control unit is also connected to the input terminal of the voltage control unit and sends control commands to the voltage control unit. The output terminal of the circuit control unit is the output terminal of the control module. The output terminal of the circuit control unit is connected to a relay. The circuit control unit generates circuit control commands based on the control commands and sends the circuit control commands to the relay to control the relay to connect or disconnect. The output terminal of the voltage control unit is also the output terminal of the control module. The output terminal of the voltage control unit is connected to a DC-DC converter. The voltage control unit generates voltage control commands based on the control commands and sends the voltage control commands to the DC-DC converter to control the DC-DC converter to perform voltage conversion. In this application, by using this processing module, the voltage conversion between the battery module and external devices is reduced from two voltage conversions to one, reducing device losses during power transmission, lowering system losses, and improving system efficiency.

[0105] Figure 6 A schematic diagram of the structure of an energy system according to an embodiment of this application is shown. Figures 1 to 5 Based on the illustrated embodiments, as Figure 6 As shown, the energy system 10 in this embodiment may further include: an isolation module 15 and a safety management module 17.

[0106] In this embodiment, the control module 11 may further include a safety control unit 114. The input terminal of the safety control unit 114 is connected to the core control unit 112 of the control module 11. The safety control unit 114 is used to acquire control commands sent by the core control unit 112 and generate MOS control commands based on the control commands. The output terminal of the safety control unit 114 is connected to the control terminal of the safety management module 17. The safety control unit 114 can send the MOS control commands to the safety management module 17. The MOS control commands are used to control the charging / discharging MOS in the safety management module 17 to turn on or off. The first terminal of the safety management module 17 is connected to the third terminal of the processing module 12. The second terminal of the safety management module 17 is connected to the battery module 13. In this energy system 10, the safety management module 17, the processing module 12, and the battery module 13 can form a charging / discharging circuit.

[0107] The isolation module 15 has its first end connected to the processing module 12 and its second end connected to the control module 11. The isolation module 15 isolates the control chip of the control module 11 from the charging and discharging circuit of the energy system 10. This isolation module 15 prevents damage to the control chip from excessive current or voltage during operation of the charging and discharging circuit of the energy system 10. Furthermore, the isolation module 15 enhances user safety, ensuring user safety when interacting with the control chip.

[0108] Specifically, the isolation module 15 may include at least one of an optocoupler isolation device, a power isolation device, a driver chip isolation device, and a communication isolation device. When the isolation module 15 includes an optocoupler isolation device, its first terminal is connected to the circuit control unit 113, and its second terminal is connected to the relay 121. When the isolation module 15 includes a power isolation device, its first terminal is connected to the power supply unit 115, and its second terminal is connected to the voltage gating module 16. When the isolation module 15 includes a driver chip isolation device, its first terminal is connected to the voltage control unit 111, and its second terminal is connected to the DC-DC converter 122. When the isolation module 15 includes a communication isolation device, its first terminal is connected to the sampling unit, and its second terminal is connected to the sampling module 14.

[0109] The energy system provided in this application may further include a safety management module, with its first terminal connected to the third terminal of the processing module. The second terminal of the safety management module is connected to the battery module. The safety management module, the processing module, and the battery module can form a charging / discharging circuit. The control terminal of the safety management module is connected to the output terminal of the control module. The safety management module can obtain control commands from the control module. These control commands can be used to control the connection or disconnection of the charging / discharging MOS transistors in the safety management module. Furthermore, this application may also include an isolation module. The first terminal of the isolation module is connected to the processing module. The second terminal of the isolation module is connected to the control module. In this application, the safety of the energy system is improved by using the safety management module. Simultaneously, in this application, the safety and stability of the control chip in the control module are improved by using the isolation module, thereby improving system performance.

[0110] exist Figures 1 to 6 Based on the illustrated embodiments, as Figure 7 The diagram shows a circuit structure schematic of an energy system 10 according to an embodiment of this application. Taking three processing modules as an example, the circuit structure of the energy system 10 is as follows. Figure 7 As shown.

[0111] The connection circuits in this circuit diagram can include thick solid lines, thin solid lines, and dashed lines. Thick solid lines are used to indicate connection circuits within the charging / discharging loop. Thin solid lines and dashed lines are used to indicate connection circuits outside the charging / discharging loop.

[0112] The control module 11 can be a multi-channel bidirectional DC-DC control board. The circuit control unit 113 within this control module 11 is the relay controller used to implement relay control within the multi-channel bidirectional DC-DC control board. This relay controller can be connected to the relays 121 in the three processing modules 12 via an isolation device 15 for isolating optocouplers. The relay controller can send circuit control commands to the relays 131 in the three processing modules 12. These circuit control commands are used to indicate whether the circuit of the processing module 12 is connected or disconnected. Specifically, when the processing module 12 is connected to an external device, the circuit of the processing module 12 is connected. Otherwise, the circuit of the processing module 12 is disconnected. For example, when a photovoltaic panel is connected to the third processing module 12, the relay 121 in the third processing module 12 is connected.

[0113] The sampling unit in the control module 11 is the AD sampling chip used for AD sampling in the multi-channel bidirectional DC-DC control board. This AD sampling chip can be connected to the time-division transmission unit 142 in the sampling module 14 via an isolation device 15 for communication isolation. The time-division transmission unit 142 is used to transmit the electrical signals collected by the integrated sampling unit 141 and the battery sampling unit 143 in the sampling module 14 to the AD sampling chip of the sampling unit.

[0114] The voltage control unit 111 in the control module 11 is the output device used to implement PWM waveform output in this multi-channel bidirectional DC-DC control board. This output device, after passing through a driver isolation chip, is connected to the DC-DC converters 122 of the three processing modules 12. The DC-DC converters 122 are... Figure 7 The DC-DC converter in the processing module 12 can determine the voltage conversion based on the duty cycle in the received PWM waveform. Each processing module 12's DC-DC converter can be connected to four lines transmitting PWM waveforms.

[0115] The control module 11 also includes a power supply unit 115, as shown in the multi-channel bidirectional DC-DC control board, for providing power. This power supply unit 115 is connected to a diode voltage gating circuit in the voltage gating module 16 via an isolation device 15 for power isolation. This diode voltage gating circuit can also be connected to the DC-DC converters of the battery module 13 and the three processing modules 12 to power the multi-channel bidirectional DC-DC control board.

[0116] exist Figure 7 In this multi-channel bidirectional DC-DC control board, each unit needs to pass through an isolation device 15 before connecting to other devices. The use of the isolation device 15 enables the multi-channel bidirectional DC-DC control board to form an isolation zone for the MOMI control board.

[0117] One of the processing modules 12 may include a relay 121, a DC-DC converter 122, and a rectifier 123. For example... Figure 7 As shown, each DC-DC converter can be connected to four PWM control lines. Each DC-DC converter may include two voltage detectors and two current detectors. These four detectors are located at the first and second terminals of the DC-DC converter, respectively. These four detectors are used to acquire the current and voltage at the first and second terminals of the DC-DC converter. These four detectors are connected to the integrated ADC sampling chip in the sampling module 14, and are used to upload the input voltage, output voltage, input current, and output current of each DC-DC converter to the sampling module 14. The first terminal of the DC-DC converter is connected to a relay, and then to the battery module 13. The second terminal of the DC-DC converter is connected to an external device. This external device can be a photovoltaic panel, wind power generation system, mains power, load, etc. When the current input to the second terminal of the DC-DC converter is alternating current (AC), a diode rectifier circuit connected in series with the DC-DC converter can convert the AC current to direct current (DC). When the input / output current at the second terminal of the DC-DC converter is direct current (DC), the diode rectifier circuit does not affect the current input / output.

[0118] Among them, battery module 13 is Figure 7 The battery shown may include multiple input / output interfaces. The battery can be connected to three relays respectively. Furthermore, the battery can be connected to a diode for voltage selection and current filtering. The battery, together with the processing module 12 and the safety management module 17, forms a charging / discharging circuit.

[0119] The safety management module 17 is a module formed by removing the controller from the original Battery Management System (BMS). The original BMS may include an AFE (Action Filter), an AD (Action Difference) sampling unit, and a charge / discharge MOSFET. After removing the controller from the BMS, the charge / discharge MOSFET in the BMS becomes the safety management module 17 of this application. The AFE and AD sampling unit in the BMS become the battery sampling unit 143 of this application. Figure 7 As shown, the charge / discharge MOS is connected in series in the charge / discharge circuit.

[0120] Figure 8 A flowchart illustrating an energy system control method according to an embodiment of this application is shown. Figure 8As shown, with the control module as the execution entity, the method in this embodiment may include the following steps:

[0121] S101. Obtain device information and electrical signals from external devices connected to the processing module.

[0122] In this embodiment, the control module can acquire electrical signals from the sampling module. These electrical signals may include input voltage, output voltage, input current, output current, and other signals from each processing module. The control module can also acquire device information of external devices corresponding to each processing module.

[0123] S102. Determine the target output voltage based on the equipment information.

[0124] In this embodiment, the control module may pre-store the possible external devices connected to the energy device. The control module may also pre-store the input and output voltages corresponding to each external device. When the external device is a power supply device, the control module can determine the target output voltage based on the battery module. When the external device is a load, the control module can determine the target output voltage based on the device information of the load.

[0125] S103. Generate and send control commands based on the input voltage and the target output voltage.

[0126] In this embodiment, the control device can generate control commands based on the input voltage and the target output voltage. Specifically, the control module can consist of different units that generate different commands based on the control commands and send these commands to different devices to achieve specific control.

[0127] In one implementation, after receiving the control command, the voltage control unit can perform the following steps and generate a voltage control command:

[0128] Step 1: The voltage control unit determines the voltage adjustment value based on the input voltage and the target output voltage.

[0129] Step 2: The voltage control unit determines the duty cycle of the PWM waveform for this processing module based on the voltage adjustment value. The voltage control unit can then generate the PWM waveform based on this duty cycle. This PWM waveform serves as the voltage control command.

[0130] Step 3: The voltage control unit can send the voltage control command to the DC-DC converter. The DC-DC converter can then perform voltage conversion according to the voltage control command, converting the input voltage into the target output voltage.

[0131] In another implementation, after receiving the control command, the circuit control unit can perform the following steps and generate circuit control commands:

[0132] Step 1: The circuit control unit can compare the input voltage and / or input current with a first threshold and a second threshold. When the input voltage and / or input current is greater than or equal to the first threshold and less than or equal to the second threshold, it indicates that the input voltage and / or input current is within the normal range, and that there is input voltage and / or input current in the circuit corresponding to the processing module. The circuit control unit can generate circuit control commands for the processing module. The first threshold can be 0. When the input voltage and / or input current is greater than or equal to the first threshold, it indicates that there is voltage and / or current in the circuit. The second threshold can be a large value. When the input voltage and / or input current is greater than the second threshold, it indicates that a short circuit has occurred in the circuit.

[0133] Step 2: The circuit control unit can send circuit control commands to the relays in the processing module. These circuit control commands can control the relays to connect.

[0134] In another implementation, the core control module can also perform the following steps to generate MOS control instructions after generating control instructions:

[0135] Step 1: The core control module can obtain the input voltage input terminal, which is either the first terminal or the second terminal of the processing module.

[0136] Step 2: When the input voltage and / or input current exceed the second threshold, and the input terminal is the first terminal of the processing module, it indicates that the battery module is in a discharging state and a short circuit has occurred. Therefore, the core control module can generate a discharge MOS control command. This discharge MOS control command is used to control the discharge MOS to disconnect. When the discharge MOS is disconnected, the battery module will no longer be able to supply power to the load.

[0137] Step 3: When the input voltage and / or input current exceed the second threshold, and the input terminal is the second terminal of the processing module, it indicates that the battery module is in a charging state and a short circuit has occurred. Therefore, the core control module can generate a charging MOS control command. This charging MOS control command is used to control the charging MOS to disconnect. When the charging MOS is disconnected, the battery module will be unable to continue charging.

[0138] Step 4: The core control module can send charging MOS control commands or discharging MOS control commands to the safety management module. The safety management module can then perform the corresponding charging / discharging MOS disconnection operation.

[0139] The energy system control method provided in this application allows the control module to acquire electrical signals from a sampling module. The control module can also acquire device information of external devices corresponding to each processing module. When the external device is a power supply device, the control module can determine the target output voltage based on the battery module. When the external device is a load, the control module can determine the target output voltage based on the load's device information. The control device can generate control commands based on the input voltage and the target output voltage. The control module can then send these control commands to the corresponding devices. In this application, by using control commands and circuit control commands, the control of the input and output voltages in the processing modules is achieved, thereby improving the system efficiency of the energy system.

[0140] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An energy system, characterized in that, The system includes: a control module, a processing module, a sampling module, and a battery module; The first end of the processing module is connected to the battery module, the second end of the processing module is connected to an external device, and the control end of the processing module is connected to the control module; the processing module is used to convert the input voltage input to the processing module according to the control command sent by the control module, and output the converted output voltage. The sampling end of the processing module is connected to the input end of the sampling module, and the output end of the sampling module is connected to the input end of the control module. The input terminal of the control module is connected to the output terminal of the sampling module, and is used to generate control commands based on the electrical signals of the processing module acquired by the sampling module; the output terminal of the control module is connected to the control terminal of the processing module, and is used to send the control commands to the processing module. The control module includes: a core control unit, a circuit control unit, and a voltage control unit; The input terminal of the core control unit is the input terminal of the control module, and the input terminal of the core control unit is connected to the output terminal of the sampling module; The output terminal of the core control unit is connected to the input terminal of the circuit control unit. The core control unit sends the control command to the circuit control unit. The output terminal of the circuit control unit is the output terminal of the control module. The output terminal of the circuit control unit is connected to the relay. The circuit control unit generates a circuit control command according to the control command and sends the circuit control command to the relay to control the relay to connect or disconnect. The output terminal of the core control unit is connected to the input terminal of the voltage control unit. The core control unit sends the control command to the voltage control unit. The output terminal of the voltage control unit is the output terminal of the control module. The output terminal of the voltage control unit is connected to the DC-DC converter. The voltage control unit generates a voltage control command according to the control command and sends the voltage control command to the DC-DC converter to control the DC-DC converter to perform voltage conversion.

2. The system according to claim 1, characterized in that, The processing module includes: a relay, a DC-DC converter, and a rectifier; The first terminal of the relay is the first terminal of the processing module and is connected to the battery module. The second terminal of the relay is connected to the first terminal of the DC-DC converter and the second terminal of the DC-DC converter is connected to the first terminal of the rectifier. The second terminal of the rectifier is the second terminal of the processing module and is connected to the external device.

3. The system according to claim 2, characterized in that, The voltage control unit sends voltage control commands that include four pulse width modulation waveforms.

4. The system according to any one of claims 1-3, characterized in that, The system also includes: a security management module; The first end of the safety management module is connected to the third end of the processing module, and the second end of the safety management module is connected to the battery module, so that the safety management module, the processing module and the battery module form a loop; The control terminal of the security management module is connected to the output terminal of the control module, and is used to obtain the control commands generated by the control module, and control the security management module to connect or disconnect according to the control commands.

5. The system according to claim 4, characterized in that, The control module further includes: a safety control unit; The input terminal of the safety control unit is connected to the core control unit of the control module. The safety control unit is used to obtain the control commands sent by the core control unit and generate MOS control commands according to the control commands. The output terminal of the safety control unit is connected to the control terminal of the safety management module, and is used to send the MOS control command to the safety management module to control the charging and discharging MOS in the safety management module to turn on or off.

6. The system according to any one of claims 1-3, characterized in that, The sampling module includes an integrated sampling unit, a time-division transmission unit, and a battery sampling unit; The input terminal of the integrated sampling unit includes multiple pins, each pin being connected to a detector in the processing module. The integrated sampling unit is used to acquire electrical signals in the processing module. The output terminal of the integrated sampling unit is connected to the input terminal of the time-division transmission unit and is used to transmit the detected electrical signals to the time-division transmission unit. The input terminal of the battery sampling unit is connected to the battery module to acquire the electrical signal of the battery module; the output terminal of the battery sampling unit is connected to the input terminal of the time-division transmission unit to transmit the detected electrical signal to the time-division transmission unit. The output terminal of the time-division transmission unit is connected to the input terminal of the control module, and is used to transmit the electrical signal to the control module in a time-division manner.

7. The system according to any one of claims 1-3, characterized in that, The system also includes: an isolation module; The first end of the isolation module is connected to the processing module, and the second end of the isolation module is connected to the control module.

8. The system according to claim 7, characterized in that, The isolation module includes at least one of an optocoupler isolation device, a power isolation device, a driver chip isolation device, and a communication isolation device.

9. The system according to any one of claims 1-3, characterized in that, The system also includes: a voltage gating module; The first terminal of the voltage gating module is connected to the control module; the second terminal of the voltage gating module is connected to the battery module; the third terminal of the voltage gating module is connected to the second terminal of the processing module; the voltage gating module is used to supply power to the control module.

10. The system according to any one of claims 1-3, characterized in that, The external device includes at least one of the following: lead-acid battery, photovoltaic module, wind power module, and mains power input module, which are installed in the 5G base station.

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