Novel switching power supply system architecture and implementation method

Abstract

The invention discloses a novel switching power supply system architecture and an implementation method, and the architecture and the method can retain a monitoring unit or do not retain the monitoring unit: when the monitoring unit is not reserved, each power supply module cooperatively works based on a master-slave mode according to a preset rule, and a multi-power-supply-module northbound RS485 bus is connected with a current master module and a current slave module to form a multi-power-supply-module northbound RS485 bus; the communication with the FSU is realized, and the reliability of the monitoring communication between the switching power supply system and the FSU is improved; when the monitoring unit is kept and the monitoring unit is normal, the monitoring unit acquires battery charging current information and real-time total load current, issues parameters to the power supply modules, and stores the parameters in the power supply modules; and when the monitoring unit is reserved but the monitoring unit is abnormal, or the monitoring unit is not reserved, the modules cooperatively work according to a preset rule based on a master-slave mode. By adopting the technical scheme, whether the monitoring unit is configured or works normally or not can control the charging voltage and current of the battery, and the battery cannot be damaged.

Description

Technical Field

[0001] The present invention belongs to the technical field of communication power management and relates to a novel switching power supply system architecture and implementation method. The present invention can be applied to power supply systems used in communication base stations, power systems, industrial automation and other occasions. The present invention can also be applied to UPS power supplies, electric vehicle charging stations, solar inverters and other scenarios that require multiple power modules to work together to power loads and batteries. Background Art

[0002] In traditional communication power systems, multiple power modules work in parallel, and battery charging and discharging are all completed by the monitoring unit in the power system. In actual applications, many power systems are unable to manage the charging of the bus battery due to failure of the monitoring unit, and the power modules cannot work together. Ultimately, the battery may not be fully charged or the charging current is too large, causing battery damage. Summary of the invention

[0003] The object of the present invention is to provide a novel switching power supply system architecture and implementation method, which can still control the output charging current to the battery without sudden change when the monitoring unit is damaged or the monitoring unit is not set, and will not cause damage to the battery.

[0004] In order to achieve the above object, the basic scheme of the present invention is: a method for implementing a new switching power supply system architecture, including one of the following schemes:

[0005] Option 1:

[0006] When the monitoring unit is normal, the monitoring unit collects battery charging current information and real-time total load current, and sends parameters including total load current, battery charging current limit value, battery equalizing charging voltage and floating charging voltage, equalizing floating charging conversion conditions, etc. to each power module, and saves them inside each power module;

[0007] When the monitoring unit is abnormal, multiple power modules work together to obtain the number of currently available power modules in real time, and determine one as the master from the multiple power modules and the others as slaves;

[0008] The host power module obtains the bus voltage. When the bus voltage is lower than the preset voltage, the sum of the load current and the battery charging current limit value is evenly distributed and notified to the slave power modules. All power modules limit the output current to charge the battery and supply power to the load.

[0009] When the bus voltage reaches the preset voltage, the maximum current output of each power module is maintained;

[0010] Option 2:

[0011] When the monitoring unit is normal, the monitoring unit sends the battery charging time and preset charging voltage to each power module and stores them inside each power module;

[0012] When the monitoring unit is abnormal, multiple power modules work together to obtain the number of currently available power modules in real time, and determine one as the master from the multiple power modules and the others as slaves;

[0013] When the external mains power is initially received, the main power module coordinates and controls the output voltage of the multi-power modules to slowly increase according to the saved battery charging time and preset charging voltage until the charging time is reached and the charging voltage reaches the set value;

[0014] Option 3:

[0015] The power module adopts a dual-bus structure. The power module broadcasts its own status and obtains the status of other power modules through the CAN bus interconnection. All power modules are connected in parallel to output a communication interface to connect to the host computer. The battery charging management parameters are preset in the power module through the host computer.

[0016] Determine one of the multiple power modules as the master and the others as slaves, or use the master to summarize the slave information and communicate with the host computer through a fixed communication address, or the master and the slave communicate with the host computer through different communication addresses respectively, and realize the information summary of multiple power modules on the host computer;

[0017] The host power module obtains the bus voltage. When the bus voltage is lower than the preset voltage, the sum of the load current and the battery charging current limit value is evenly distributed and notified to the slave power modules. All power modules limit the output current to charge the battery and supply power to the load.

[0018] When the bus voltage reaches the preset voltage, the maximum current output of each power module is maintained.

[0019] The working principle and beneficial effect of this basic solution are: when the monitoring unit is damaged or the monitoring unit is not set, the charging current output by the power module to the battery does not change suddenly, and the battery will not be damaged. The power modules work together to determine the host and the slave, ensuring normal operation at any time and improving reliability. The present invention does not require additional equipment, saves costs, is easy to implement, and is easy to promote and implement.

[0020] Furthermore, in solution 1 and / or solution 3, during the battery power-up process of an incoming call:

[0021] After the output voltage of the power module slowly rises to the preset voltage and outputs at the maximum current for a stable preset period of time, the host power module counts the output current of all power modules as the current load current, and evenly distributes it to each power module together with the sum of the set battery charging current limit value, and the current limiting output is used for battery charging and load power supply.

[0022] During the battery power-up process, each power module is controlled to limit the output current to charge the battery and supply power to the load to ensure stable power supply.

[0023] Furthermore, in Scheme 1 and / or Scheme 3, during the charging process, if the load increases, the host power module obtains the bus voltage. If it shows a downward trend, it is determined that the current battery is not charged and is in a supplementary discharge state. The host power module cooperates with each slave power module to increase the current limit value until the voltage remains unchanged. The current of each power module at this time is used as the new load current, and the sum of the set battery charging current limit value is evenly distributed to each power module. The current limiting output is used to charge the battery and power the load until the battery charging voltage is fully charged to the preset voltage.

[0024] When the load increases, the battery can still be charged stably.

[0025] Furthermore, after the battery is fully charged to the equalization charge voltage, it waits for the equalization float charge conversion condition. After the equalization float charge conversion condition is reached, it switches to the float charge voltage and maintains the maximum current output of each power module.

[0026] The float charge voltage is the voltage that the battery maintains after being fully charged. This capacity is maintained by compensating for the battery's self-discharge, ensuring that the battery is fully charged while meeting the power requirements of the load.

[0027] Furthermore, in the second solution, the charging time length intervals corresponding to different battery voltage values ​​are set according to the battery voltage curve;

[0028] If the charging start voltage is not the cut-off voltage, calculate the remaining charging time, that is, subtract the charging time corresponding to the initial charging voltage from the full charging time.

[0029] According to different battery voltage values, the charging time is controlled to ensure that the battery is fully charged and the charging current does not change suddenly, so as not to damage the battery.

[0030] Furthermore, the power module broadcasts its own status through the CAN bus interconnection and obtains the status of other power modules and a preset group address, and selects one power module as the host based on the group address, and the others are slaves.

[0031] The power modules work together to determine the master and slave, ensuring normal operation at any time and improving reliability.

[0032] Furthermore, the power module with the smallest or largest address in the group is selected as the master, and the others are slaves.

[0033] Sequentially select the power module as the host to facilitate the operation.

[0034] Further, when the host power module is damaged, one of the remaining normally working slave power modules is selected as the host, and the others are slaves. Preferably, the power module with the smallest or largest address is selected as the host, and the others are slaves.

[0035] This ensures that there is always a master power module to control other slave power modules and ensure smooth operation of the equipment.

[0036] Furthermore, in solution three, when the host aggregates the slave information and communicates with the host computer at a fixed communication address, after the host is switched, the communication address of the new host power module is modified to the fixed communication address to communicate with the host computer.

[0037] When the host is switched, communication with the host computer is guaranteed by modifying the communication address.

[0038] Furthermore, the host power module manages the equalization charging cycle of the slave power module.

[0039] The host manages the equalization charging cycle of the slaves, and no monitoring unit is required, which is convenient for use.

[0040] Furthermore, the host power supply module realizes current sharing of each power supply module according to the total output current of each power supply module.

[0041] The host implements current balancing of each power module according to the total output current of each power module to ensure power consumption.

[0042] Furthermore, in scheme three, the switching power supply system is equipped with a monitoring unit, and the power module adopts a dual-bus structure. The power module broadcasts its own status and obtains the status of other power modules through the CAN bus interconnection. All power modules and the monitoring unit are connected in parallel to output a communication interface and are connected to the host computer at the same time;

[0043] When the monitoring unit is normal, the host computer communicates with the monitoring unit through the communication interface and the set communication address to achieve real-time monitoring of the switching power supply system. The monitoring unit cooperates with multiple rectifier modules to achieve battery charging management and load current sharing management;

[0044] After the host computer determines that the communication with the monitoring unit is abnormal within the set time, multiple power modules change to master-slave working mode, or the host computer continues to use the original communication address to communicate with the switching power supply system, and the northbound communication interface of the host power module automatically changes the address to the address of the original monitoring unit; or the host computer directly communicates with the host power module through the preset backup communication address; or the host computer directly communicates with multiple power modules and realizes multi-module information aggregation on the host computer end.

[0045] According to the system usage requirements, optional monitoring unit is provided for easy control.

[0046] The present invention also provides a novel switching power supply system architecture based on the implementation method of the present invention, including one of the following solutions:

[0047] Solution 1: It includes multiple power modules, a monitoring unit, a battery current sensor, and an optional load current sensor. The monitoring unit is connected to the multiple power modules through the CAN bus. The power modules are respectively connected to the battery and the communication load. The battery current sensor is connected to the battery, and the load current sensor is connected to the communication load. The output ends of the battery current sensor and the load current sensor are both connected to the monitoring unit.

[0048] Solution 2: It includes multiple power modules, a monitoring unit, a battery current sensor, and an optional load current sensor. The monitoring unit is connected to the multiple power modules through a dual bus. The power modules are respectively connected to the battery and the communication load. The battery current sensor is connected to the battery, and the load current sensor is connected to the communication load. The output ends of the battery current sensor and the load current sensor are both connected to the monitoring unit.

[0049] Solution 3: It includes multiple power modules. The power modules adopt a dual-bus structure. The power modules are interconnected through the CAN bus to broadcast their own status and obtain the status of other power modules. All power modules are connected in parallel to output a communication interface to connect to the host computer. The battery charging management parameters are preset inside the power module through the host computer; a battery current sensor can be optionally equipped and connected to the power module through the CAN bus or near-field connection.

[0050] The system is based on the coordinated work of the power modules within the power system to control the output charging current to the battery so that it does not change suddenly and does not cause damage to the battery.

[0051] Furthermore, in solution three, a monitoring unit may be optionally configured, and the monitoring unit is connected to multiple power modules via a dual bus.

[0052] According to the system usage requirements, optional monitoring unit is provided for easy control.

[0053] Furthermore, it also includes an FSU unit, which is connected to the monitoring unit through a serial port in solution one, connected to the power module through a serial port in solution two, connected to the power module through a serial port in solution three, or connected to the monitoring unit and the power module at the same time.

[0054] Set up the FSU unit to remotely monitor system information.

[0055] Furthermore, in solution three, the working status and operating parameters of the power module are viewed in real time by the host computer and permission management is performed, including the permission to set parameters and the permission to view real-time operating parameters, so as to trace incorrect parameter settings and operations.

[0056] Monitor the power module through the host computer to ensure the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a structural schematic diagram of a first solution of a novel switching power supply system architecture of the present invention;

[0058] Figure 2 It is a structural schematic diagram of a second scheme of a novel switching power supply system architecture of the present invention;

[0059] Figure 3 It is a flow chart of a second solution of a method for implementing a novel switching power supply system architecture of the present invention;

[0060] Figure 4 It is a battery voltage curve diagram of solution 2 of a method for implementing a novel switching power supply system architecture of the present invention;

[0061] Figure 5 It is a structural schematic diagram of scheme 3 of a novel switching power supply system architecture of the present invention. DETAILED DESCRIPTION

[0062] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0063] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0064] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0065] The present invention discloses a method for implementing a novel switching power supply system architecture, including one of the following solutions:

[0066] Solution 1 (automatic current limiting):

[0067] When the monitoring unit is normal, the monitoring unit collects battery charging current information and real-time total load current, and sends parameters including but not limited to total load current, battery charging current limit value, battery equalizing charging voltage and floating charging voltage, equalizing floating charging conversion conditions, etc. to each power module, and saves them inside each power module;

[0068] When the monitoring unit is abnormal, multiple power modules work together to obtain the number of currently available power modules in real time, and determine one as the master from the multiple power modules and the others as slaves;

[0069] The host power module obtains the bus voltage (which can be collected through the built-in voltage sampling circuit). When the bus voltage is lower than the preset voltage, the sum of the load current and the battery charging current limit value is evenly distributed and notified to the slave power modules. The current limiting output of all power modules is used to charge the battery (storage battery) and power the load;

[0070] When the bus voltage reaches the preset voltage, the maximum current output of each power module is maintained.

[0071] Solution 2 (automatic collaboration):

[0072] like Figure 3 As shown, when the monitoring unit is normal, the monitoring unit sends the battery charging time and the preset charging voltage to each power module, and stores them inside each power module;

[0073] When the monitoring unit is abnormal, multiple power modules work together to obtain the number of currently available power modules in real time, and determine one as the master from the multiple power modules and the others as slaves;

[0074] When the external mains power is initially received, the main power module coordinates and controls the output voltage of the multiple power modules to slowly rise according to the stored battery (battery) charging time and the preset charging voltage until the charging time is reached and the charging voltage reaches the set value.

[0075] Solution 3 (optional monitoring unit):

[0076] When the monitoring unit is not configured, the power module adopts a dual-bus structure. The power module broadcasts its own status and obtains the status of other power modules through the CAN bus interconnection. All power modules output a communication interface (such as RS485 interface, etc.) in parallel to connect to the host computer, and the battery charging management parameters are preset in the power module through the host computer;

[0077] Determine one of the multiple power modules as the master and the others as slaves. Or use the master to summarize the slave information and communicate with the host computer via a fixed communication address, or the master and slave communicate with the host computer via different communication addresses respectively, and realize the information summary of multiple power modules on the host computer;

[0078] The host power module obtains the bus voltage. When the bus voltage is lower than the preset voltage, the sum of the load current and the battery charging current limit value is evenly distributed and notified to the slave power modules. All power modules limit the output current to charge the battery and supply power to the load.

[0079] When the bus voltage reaches the preset voltage, the maximum current output of each power module is maintained.

[0080] In another preferred embodiment of the present invention, in embodiment 3, the switching power supply system is configured with a monitoring unit, the power supply module adopts a dual-bus structure, the power supply module broadcasts its own status through the CAN bus interconnection and obtains the status of other power supply modules, and all power supply modules and the monitoring unit are connected in parallel to output a communication interface and connected to the host computer at the same time;

[0081] When the monitoring unit is normal, the host computer communicates with the monitoring unit through the communication interface and the set communication address to achieve real-time monitoring of the switching power supply system. The monitoring unit cooperates with multiple rectifier modules to achieve battery charging management and load current sharing management;

[0082] After the host computer determines that the communication with the monitoring unit is abnormal within the set time, multiple power modules change to master-slave working mode, or the host computer continues to use the original communication address to communicate with the switching power supply system, and the northbound communication interface of the host power module automatically changes the address to the address of the original monitoring unit; or the host computer directly communicates with the host power module through the preset backup communication address; or the host computer directly communicates with multiple power modules and realizes multi-module information aggregation on the host computer end.

[0083] The method of the present invention can control the power module to output a charging current to the battery without sudden changes when the monitoring unit is damaged or the monitoring unit is not set, which will not cause damage to the battery. In addition, when the battery charging current is controlled to be constant, the original load output capacity of the system is not affected.

[0084] In a preferred embodiment of the present invention, in the first embodiment and / or the third embodiment, during the process of powering up the battery of an incoming call:

[0085] After the output voltage of the power module slowly rises to the preset voltage and outputs at the maximum current for a stable preset period of time, the host power module counts the output current of all power modules as the current load current, and evenly distributes it to each power module together with the sum of the set battery charging current limit value, and the current limiting output is used for battery charging and load power supply.

[0086] In a preferred embodiment of the present invention, in embodiment 1 and / or embodiment 3, during the charging process, if the load increases, the host power module obtains the bus voltage. If it shows a downward trend, it is judged that the current battery is not charged and is in a supplementary discharge state. The host power module cooperates with each slave power module to increase the current limiting value until the voltage remains unchanged. The current of each power module at this time is used as the new load current, and is evenly distributed to each power module together with the sum of the set battery charging current limiting value. The current limiting output is used to charge the battery and power the load until the battery charging voltage is fully charged to the preset voltage.

[0087] In a preferred embodiment of the present invention, after the battery is fully charged to the equalization charging voltage, it waits for the equalization floating charging conversion condition. After the equalization floating charging conversion condition is reached, it switches to the floating charging voltage and maintains the maximum current output of each power module.

[0088] In a preferred embodiment of the present invention, in the second embodiment, according to the battery voltage curve (such as Figure 4 Set the charging time interval corresponding to different battery voltage values;

[0089] If the charging start voltage is not the cut-off voltage, the remaining charging time is calculated, that is, the charging time corresponding to the initial charging voltage is subtracted from the full charging (reaching the set value) charging time.

[0090] Relationship between voltage rise and charging time:

[0091] 1. Total charging time = battery cut-off voltage to battery full voltage;

[0092] 2. The voltage in the low-voltage segment and the fully charged segment of the battery rises faster, accounting for a smaller proportion of the entire charging time. The voltage in the middle segment rises slowly, accounting for a larger proportion of the duration. The voltage rise time interval can be set according to the characteristics of the battery platform.

[0093] 3. If the battery voltage at the beginning of charging is not the cut-off voltage, the remaining charging time needs to be subtracted from the time required for the initial charging voltage.

[0094] In a preferred embodiment of the present invention, the power module broadcasts its own status through the CAN bus interconnection and obtains the status of other power modules and a preset group address, and selects one power module as the host based on the group address, and the others are slaves.

[0095] Preferably, the power module with the smallest or largest address in the group is selected as the master, and the others are slaves.

[0096] In a more preferred embodiment of the present invention, when the host power module is damaged, one of the remaining normally working slave power modules is selected as the host, and the others are slaves. Preferably, the power module with the smallest or largest address is used as the host, and the others are slaves.

[0097] This ensures that there is always a master power module to control other slave power modules and ensure smooth operation of the equipment.

[0098] In a preferred embodiment of the present invention, in Embodiment 3, when the host aggregates the slave information to communicate with the host computer at a fixed communication address, after the host is switched, the communication address of the new host power module is modified to the fixed communication address to communicate with the host computer.

[0099] Preferably, the host power module performs equalization charge cycle management on the slave power module.

[0100] More preferably, the host power module realizes current sharing of each power module according to the total output current of each power module.

[0101] The present invention also provides a novel switching power supply system architecture based on the implementation method of the present invention, including one of the following solutions:

[0102] Option 1: If Figure 1 As shown, it includes multiple power modules, a monitoring unit, a battery current sensor, and an optional load current sensor. The monitoring unit is electrically connected to the multiple power modules through the CAN bus, the power modules are electrically connected to the battery and the communication load respectively, the battery current sensor is electrically connected to the battery, the load current sensor is electrically connected to the communication load, and the output ends of the battery current sensor and the load current sensor are both electrically connected to the monitoring unit.

[0103] Option 2: If Figure 2 As shown, it includes multiple power modules, a monitoring unit, a battery current sensor, and an optional load current sensor. The monitoring unit is electrically connected to the multiple power modules through a dual bus, the power modules are electrically connected to the battery and the communication load respectively, the battery current sensor is electrically connected to the battery, the load current sensor is electrically connected to the communication load, and the output ends of the battery current sensor and the load current sensor are both electrically connected to the monitoring unit.

[0104] Option 3: If Figure 5 As shown, it includes multiple power modules, which adopt a dual-bus structure. The power modules are interconnected through the CAN bus to broadcast their own status and obtain the status of other power modules. All power modules are connected in parallel to output a communication interface that is electrically connected to the host computer. The battery charging management parameters are preset inside the power module through the host computer. A battery current sensor can be optionally equipped and connected to the power module through the CAN bus or near-field connection.

[0105] Preferably, a monitoring unit can be optionally configured in solution 3, and the monitoring unit is electrically connected to each power module. According to the use requirements of the system, the monitoring unit is configured to facilitate control.

[0106] The system has a simple structure and is based on a power module in the power system. It controls the output charging current of the battery so that it does not change suddenly and does not damage the battery.

[0107] In a preferred embodiment of the present invention, it also includes an FSU unit (communication base station dynamic environment monitoring unit). The FSU unit is electrically connected to the monitoring unit through a serial port in Scheme 1, is electrically connected to the power module through a serial port in Scheme 2, is electrically connected to the power module through a serial port in Scheme 3, or is electrically connected to the monitoring unit and the power module at the same time.

[0108] In a preferred embodiment of the present invention, in Embodiment 3, the working status and operating parameters of the power module are viewed in real time by the host computer and permission management is performed, including permission to set parameters and permission to view real-time operating parameters, so as to trace incorrect parameter settings and operations.

[0109] Monitor the power module through the host computer to ensure the normal operation of the equipment.

[0110] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for implementing a new switching power supply system architecture, characterized in that: This includes one of the following options: Option 1: When the monitoring unit is normal, the monitoring unit collects battery charging current information and real-time total load current, and sends parameters including total load current, battery charging current limit value, battery equalizing charging voltage and floating charging voltage, and equalizing and floating charging conversion condition parameters to each power module, and saves them inside each power module; When the monitoring unit is abnormal, multiple power modules work together to obtain the number of currently available power modules in real time, and determine one as the master from the multiple power modules and the others as slaves; The host power module obtains the bus voltage. When the bus voltage is lower than the preset voltage, the sum of the load current and the battery charging current limit value is evenly distributed and notified to the slave power modules. All power modules limit the output current to charge the battery and supply power to the load. When the bus voltage reaches the preset voltage, the maximum current output of each power module is maintained; Option 2: When the monitoring unit is normal, the monitoring unit sends the battery charging time and preset charging voltage to each power module and stores them inside each power module; When the monitoring unit is abnormal, multiple power modules work together to obtain the number of currently available power modules in real time, and determine one as the master from the multiple power modules and the others as slaves; When the external mains power is initially received, the main power module coordinates and controls the output voltage of the multi-power modules to slowly increase according to the saved battery charging time and preset charging voltage until the charging time is reached and the charging voltage reaches the set value; Option 3: The power module adopts a dual-bus structure. The power module broadcasts its own status and obtains the status of other power modules through the CAN bus interconnection. All power modules are connected in parallel to output a communication interface to connect to the host computer. The battery charging management parameters are preset in the power module through the host computer. Determine one of the multiple power modules as the master and the others as slaves; or use the master to summarize the slave information and communicate with the host computer via a fixed communication address, or the master and the slave communicate with the host computer via different communication addresses respectively, and realize the information summary of multiple power modules on the host computer; The host power module obtains the bus voltage. When the bus voltage is lower than the preset voltage, the sum of the load current and the battery charging current limit value is evenly distributed and notified to the slave power modules. All power modules limit the output current to charge the battery and supply power to the load. When the bus voltage reaches the preset voltage, the maximum current output of each power module is maintained.

2. The method for implementing a novel switching power supply system architecture as claimed in claim 1, characterized in that: In Solution 1 and / or Solution 3, during the battery power-up process of an incoming call: After the output voltage of the power module slowly rises to the preset voltage and outputs at the maximum current for a stable preset period of time, the host power module counts the output current of all power modules as the current load current, and evenly distributes it to each power module together with the sum of the set battery charging current limit value, and the current limiting output is used for battery charging and load power supply.

3. The method for implementing a novel switching power supply system architecture as claimed in claim 1, characterized in that: In Scheme 1 and / or Scheme 3, during the charging process, if the load increases, the host power module obtains the bus voltage. If it shows a downward trend, it is determined that the current battery is not charged and is in a supplementary discharge state. The host power module cooperates with each slave power module to increase the current limit value until the voltage remains unchanged. The current of each power module at this time is used as the new load current, and the sum of the set battery charging current limit value is evenly distributed to each power module. The current limiting output is used to charge the battery and power the load until the battery charging voltage is fully charged to the preset voltage.

4. The method for implementing a novel switching power supply system architecture as claimed in claim 1, characterized in that: After the battery is fully charged to the equalization charge voltage, it waits for the equalization-float charge conversion condition. When the equalization-float charge conversion condition is reached, it switches to the float charge voltage and maintains the maximum current output of each power module.

5. The method for implementing a novel switching power supply system architecture as claimed in claim 1, characterized in that: In the second scheme, the charging time interval corresponding to different battery voltage values ​​is set according to the battery voltage curve; If the charging start voltage is not the cut-off voltage, calculate the remaining charging time, that is, subtract the charging time corresponding to the initial charging voltage from the full charging time.

6. The method for implementing a novel switching power supply system architecture according to claim 1, characterized in that: The power module broadcasts its own status through the CAN bus interconnection and obtains the status of other power modules and the preset group address. Based on the group address, one power module is selected as the host and the others are slaves.

7. The method for implementing a novel switching power supply system architecture as claimed in claim 6, characterized in that: Select the power module with the smallest or largest address in the group as the master, and the others as slaves.

8. A method for implementing a novel switching power supply system architecture as claimed in claim 6 or 7, characterized in that: When the host power module is damaged, one of the remaining slave power modules that are working normally is selected as the host, and the others are slaves. Preferably, the power module with the smallest or largest address is selected as the host, and the others are slaves.

9. The method for implementing a novel switching power supply system architecture as claimed in claim 8, characterized in that: In solution three, when the host summarizes the slave information and communicates with the host computer at a fixed communication address, after the host is switched, the communication address of the new host power module is modified to the fixed communication address to communicate with the host computer.

10. A method for implementing a novel switching power supply system architecture as claimed in claim 1 or 6, characterized in that: The host power module manages the equalization charging cycle of the slave power modules.

11. A method for implementing a novel switching power supply system architecture as claimed in claim 1 or 6, characterized in that: The host power module realizes current sharing of each power module according to the total output current of each power module.

12. The method for implementing a novel switching power supply system architecture according to claim 1, characterized in that: In solution three, the switching power supply system is equipped with a monitoring unit. The power module adopts a dual-bus structure. The power module broadcasts its own status and obtains the status of other power modules through the CAN bus interconnection. All power modules and the monitoring unit are connected in parallel to output a communication interface and are connected to the host computer at the same time. When the monitoring unit is normal, the host computer communicates with the monitoring unit through the communication interface and the set communication address to achieve real-time monitoring of the switching power supply system. The monitoring unit cooperates with multiple rectifier modules to achieve battery charging management and load current sharing management; After the host computer determines that the communication with the monitoring unit is abnormal within the set time, multiple power modules change to master-slave working mode, or the host computer continues to use the original communication address to communicate with the switching power supply system, and the northbound communication interface of the host power module automatically changes the address to the address of the original monitoring unit; or the host computer directly communicates with the host power module through the preset backup communication address; or the host computer directly communicates with multiple power modules and realizes multi-module information aggregation on the host computer end.

13. A novel switching power supply system architecture based on the implementation method of any one of claims 1 to 12, characterized in that: Includes one of the following options: Solution 1: It includes multiple power modules, a monitoring unit, a battery current sensor, and an optional load current sensor. The monitoring unit is connected to the multiple power modules through the CAN bus. The power modules are respectively connected to the battery and the communication load. The battery current sensor is connected to the battery, and the load current sensor is connected to the communication load. The output ends of the battery current sensor and the load current sensor are both connected to the monitoring unit. Solution 2: It includes multiple power modules, a monitoring unit, a battery current sensor, and an optional load current sensor. The monitoring unit is connected to the multiple power modules through a dual bus. The power modules are respectively connected to the battery and the communication load. The battery current sensor is connected to the battery, and the load current sensor is connected to the communication load. The output ends of the battery current sensor and the load current sensor are both connected to the monitoring unit. Solution 3: It includes multiple power modules. The power modules adopt a dual-bus structure. The power modules are interconnected through the CAN bus to broadcast their own status and obtain the status of other power modules. All power modules are connected in parallel to output a communication interface to connect to the host computer. The battery charging management parameters are preset inside the power module through the host computer; a battery current sensor can be optionally equipped and connected to the power module through the CAN bus or near-field connection.

14. A novel switching power supply system architecture as claimed in claim 13, characterized in that: In solution three, a monitoring unit is configured, and the monitoring unit is connected to multiple power modules via a dual bus.

15. A novel switching power supply system architecture as claimed in claim 14, characterized in that: It also includes an FSU unit, which is connected to the monitoring unit through a serial port in solution one, connected to the power module through a serial port in solution two, connected to the power module through a serial port in solution three, or connected to the monitoring unit and the power module at the same time.

16. A novel switching power supply system architecture as claimed in claim 13, characterized in that: In solution three, the upper computer can view the working status and operating parameters of the power module in real time and perform permission management, including the permission to set parameters and the permission to view real-time operating parameters, to trace incorrect parameter settings and operations.

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