Dynamic power adjustment multi-path power supply design method and system

Abstract

The invention discloses a multi-path power supply design method and system for dynamic power adjustment, and belongs to the technical field of power supply control, an outdoor power supply comprises an energy storage part, a discharging part, a charging part and a control part, and the energy storage part is provided with a BMS management system; the discharging part comprises a 500W inverter, a USB (Universal Serial Bus)-TYPEC port of four paths of IP2366, and a USB-TYPEA port of four paths of IP6525; the charging part is a lithium battery charger; the control part is responsible for the microprocessor and is used for adjusting the working state of the whole machine; the power control comprises the following steps: acquiring real-time operation power; and the microprocessor executes corresponding limit measures including power limit or state improvement measures according to the information after acquiring the information. According to the invention, the output power of each branch can be dynamically adjusted under the condition that the total power is limited, and the dynamic load power adjustment is carried out according to the priority so as to face limited power supply capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of power control, and more specifically, to a design method and system for a multi-channel power supply with dynamic power adjustment. Background Art

[0002] For power supply design, generally speaking, the load-carrying capacity of the power supply is increased to meet the needs of the load. In the face of a scenario where the load is higher than before, the ability of the power supply is also considered to be increased, rather than weakening or shutting down the load.

[0003] How to cope with the limited power supply capacity of the power supply through load power adjustment is a problem that needs to be solved in the current multi-output power supply system. Summary of the Invention

[0004] The technical task of the present invention is to provide a design method and system for a multi-channel power supply with dynamic power adjustment to address the above deficiencies. The system can dynamically adjust the output power of each branch under the condition of limited total power, and perform dynamic load power adjustment according to priorities to cope with the limited power supply capacity.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] A design method for a multi-channel power supply with dynamic power adjustment. The outdoor power supply includes: an energy storage part, a discharging part, a charging part, and a control part.

[0007] The energy storage part is equipped with a BMS management system.

[0008] The discharging part includes a 500W inverter, four USB-TYPEC ports of IP2366, and four USB-TYPEA ports of IP6525.

[0009] The charging part is a lithium battery charger.

[0010] The control part is responsible for the microprocessor and is used to adjust the working state of the whole machine.

[0011] Power control includes: obtaining the real-time operating power; after the microprocessor obtains various information, it executes corresponding limiting measures according to the information, including power limiting, or state improvement measures.

[0012] This method classifies multiple loads according to the priority level, and performs dynamic load power adjustment according to the priority to cope with the limited power supply capacity. It realizes dynamic adjustment of each output branch in a set of power supply systems to ensure that the total power does not exceed the rated requirement.

[0013] Further, the energy storage part is a set of 6 series-connected lithium batteries; the total power reaches 1 kWh.

[0014] Further, for the discharging part,

[0015] The inverter converts the DC power of the input battery into 220V 50Hz AC power for external output to be used by conventional mains equipment.

[0016] The IP2366 is a lithium battery charge and discharge control chip that supports PD3.1 and can perform automatic buck-boost control. The maximum input and output both support 28V 5A, that is, 140W. The maximum discharge power of four IP2366s is 560W.

[0017] The IP6525 is a buck control chip that supports multiple fast charging protocols. The maximum output voltage is 12V, and the maximum output power is 22.5W. The maximum discharge power of four IP6525s is 90W.

[0018] The above three modules are the discharging part, and the total power can reach up to 1110W.

[0019] Further, for the IP2366, its power can be controlled by modifying the register values through the I2C bus, including whether each voltage level is open and the control of the current corresponding to each level. It can also obtain its status information, including the charge and discharge status, voltage, current, and power information, etc.

[0020] Further, for the acquisition of the real-time operating power,

[0021] The IP2366 module can obtain the real-time operating power through the I2C bus without the need for additional sensors to obtain the real-time power. The IP6525 and inverter modules both add current detection, and the product of the current and the battery voltage is the real-time operating power.

[0022] The BMS management module can provide the status of the battery, and the data of the IP2366 module, IP6525 module, and inverter module can be cross-checked with the data of the BMS.

[0023] Further, the power limit includes:

[0024] Firstly, there is no limit, and at this time, the power of no device is limited.

[0025] Secondly, under the first-level power limit, that is, when the total power of the 500W inverter module and the IP2366 module exceeds the calibrated power under the current battery state, the discharge power of the IP2366 module will be limited. The original single-channel discharge capacity of 140W will be limited to 65W, and the discharge capacity of 20V 3.25A will be retained.

[0026] Next, under the secondary power limit, that is, after the primary power limit has been carried out and the total power of the three modules still exceeds the calibrated power under the current battery state, the discharge output ability of the IP6525 module will be turned off. The measure is to turn off the power supply input of the IP6525 module;

[0027] Finally, under the tertiary power limit, that is, after the secondary power limit has been carried out and the total discharge power, that is, the total power of the 500W inverter module and the IP2366 module, exceeds the calibrated power under the current battery state, the output of the IP2366 module will be turned off sequentially until the total discharge power is below the battery calibrated power.

[0028] Further, the so-called unrestricted, that is, power release limit: there is a margin of more than 100W between the actual power and the calibrated power.

[0029] Further, the state improvement measures include increasing the system fan speed.

[0030] Further, the process of realizing dynamic power adjustment by this method is as follows:

[0031] After the system enters the normal working state, the processor obtains the information of each sensor to judge whether there are any abnormalities, including power abnormalities and temperature abnormalities, that is, abnormalities in two aspects: the matching between the total battery output power and the calibrated power and the matching between the fan speed and the temperature;

[0032] In terms of power, if the power reaches the power limit condition, the required power limit level will be judged sequentially, and then the power limit will be achieved. At the same time, it will continuously monitor whether the limit condition can be relaxed. When the condition is met, it will return to the level of the primary power limit;

[0033] In terms of temperature, if the battery temperature or the system temperature is too high or too low, (the high or low temperature here is compared with the calibration of the battery or system temperature and the fan speed, and this calibration is written in advance), the fan speed will be increased or decreased correspondingly to achieve temperature control and maintain the good working state of the battery and the system.

[0034] The present invention also claims to protect a multi-channel power supply system for dynamic power adjustment, including: an energy storage module, a discharge module, a charging module, and a control module;

[0035] The energy storage module is equipped with a BMS management system;

[0036] The discharge module includes a 500W inverter, four USB-TYPEC ports of IP2366, and four USB-TYPEA ports of IP6525;

[0037] The charging module is a lithium battery charger;

[0038] The control module is responsible for the microprocessor and is used to adjust the working state of the whole machine;

[0039] The system realizes the dynamic power adjustment of multiple power supplies through the above method.

[0040] Compared with the prior art, the design method and system of the multiple power supply with dynamic power adjustment of the present invention have the following beneficial effects:

[0041] The present invention realizes the dynamic control of the total discharge power, can keep the battery in good condition while maximizing the external discharge, avoid risks while taking into account the user experience. It is safer than the situation without power limit and adjustment, and has less impact on the user experience than the power-off protection method. Description of the Drawings

[0042] Figure 1 is a schematic diagram of the architecture of the design method of the multiple power supply with dynamic power adjustment provided by the embodiment of the present invention;

[0043] Figure 2 is a schematic diagram of the implementation process of the design method of the multiple power supply with dynamic power adjustment provided by the embodiment of the present invention. Detailed Embodiments

[0044] The present invention will be further described below in conjunction with specific embodiments.

[0045] The embodiment of the present invention provides a design method of a multiple power supply with dynamic power adjustment. The outdoor power supply mainly includes four parts: an energy storage part, a discharge part, a charging part, and a control part.

[0046] The energy storage part is a set of 6 series-connected lithium batteries with a BMS management system, and the total power can reach 1 kWh.

[0047] The discharge part, as Figure 1 shown, has a total of three modules, a 500W inverter (the first module), four-way IP2366 USB-TYPEC ports (the second module), and four-way IP6525 USB-TYPEA ports (the third module).

[0048] The inverter converts the input direct current of the battery into 220V 50Hz alternating current for external output for use by conventional mains equipment.

[0049] The IP2366 is a lithium battery charge and discharge control chip that supports PD3.1 and can perform automatic buck-boost control. Both the input and output support a maximum of 28V 5A, that is, 140W. Since this module has four channels, the maximum discharge power is 560W. Additionally, its power can be controlled by modifying the register values through the I2C bus. It can control whether each voltage level is enabled, the current corresponding to each level, etc., and can also obtain its status information, such as the charge and discharge status, voltage, current, and power information.

[0050] The IP6525 is a buck control chip that supports multiple fast charging protocols. The maximum output voltage is 12V, and the maximum output power is 22.5W. Since this module has four channels, the maximum discharge power is 90W.

[0051] The above three modules are the discharge part, and the total power can reach up to 1110W.

[0052] The charging part is the lithium battery charger.

[0053] The control part is responsible for the microprocessor and is used to adjust the working state of the whole machine.

[0054] To control the power, it is necessary to first obtain the real-time operating power. The second module, namely the IP2366, can obtain the status through the I2C bus, so no additional sensors are required to obtain the real-time power. For the other two modules, additional current detection needs to be added, and multiplying the current by the battery voltage gives the real-time power. In addition, the BMS module of the battery will also provide the status of the battery. The data of the above three modules and the data of the BMS can be mutually verified.

[0055] The battery itself has internal resistance, so it will cause the battery to heat up during high-power charging and discharging, thus posing a risk. In addition, limited by the performance of the battery, there are also requirements for the magnitude of the discharge current, that is, the discharge power should be within the rated value. These two points both require the total discharge power of the battery. The discharge ability of the battery is affected by temperature. Each temperature range corresponds to a maximum discharge current, that is, the current at the maximum power. This maximum power is called the calibrated power here. In this method, this task is completed by the microprocessor. The microprocessor is responsible for obtaining various information and then performing corresponding limiting measures such as power limitation according to the information, or status improvement measures such as increasing the fan speed. The specific operation logic diagram is also carried out according to this.

[0056] The power limitation in this method is divided into four levels:

[0057] First is no limitation, at this time the power of no device is limited;

[0058] Secondly, under the first-level power limit, that is, when the total power of Module 1 and Module 2 exceeds the calibrated power under the current battery state, the discharge power of Module 2, namely IP2366, will be limited. The original single-channel discharge capacity of 140W will be limited to 65W, and the discharge capacity of 20V 3.25A will be retained.

[0059] Thirdly, under the second-level power limit, that is, after the first-level power limit has been carried out and the total power of the three modules still exceeds the calibrated power under the current battery state, the discharge output capacity of Module 3 will be turned off. The measure is to turn off the power supply input of Module 3.

[0060] Finally, under the third-level power limit, that is, after the second-level power limit has been carried out and the total discharge power, namely the total power of Module 1 and Module 2, exceeds the calibrated power under the current battery state, the output of Module 2 will be turned off sequentially until the total discharge power is below the battery calibrated power.

[0061] As Figure 2 shown, after the system enters the normal working state, the processor obtains the information of each sensor to judge whether there is any abnormality. The abnormalities are limited to two aspects: power and temperature, that is, the matching of the total battery output power and the calibrated power, and the matching of the fan speed and the temperature. In terms of power, if the power reaches the power limit condition, the required power limit level will be judged sequentially to achieve the power limit. At the same time, it will also continuously monitor whether the limit condition can be relaxed. If the condition is met, it will return to the first-level power limit level. In terms of temperature, if the battery temperature or the system temperature is too high or too low (the high or low temperature here is compared with the calibration of the battery or system temperature and the fan speed, and this calibration is written in advance), the fan speed will be increased or decreased correspondingly to achieve temperature control and maintain the good working state of the battery and the system.

[0062] This method classifies multiple loads according to the priority level and dynamically adjusts the load power according to the priority to face the limited power supply capacity. It realizes dynamic adjustment of each output branch in a set of power supply systems to ensure that the total power does not exceed the rated requirement.

[0063] The embodiment of the present invention also provides a multi-channel power supply system with dynamic power adjustment. This system realizes the dynamic power adjustment of multi-channel power supplies through the multi-channel power supply method with dynamic power adjustment described in the above embodiment.

[0064] The system includes: an energy storage part, a discharge part, a charging part, and a control part.

[0065] The energy storage part is a set of 6 series-connected lithium batteries with a BMS management system, and the total power can reach 1 kWh.

[0066] The discharging part consists of three modules: a 500W inverter (the first module), four USB-TYPEC ports of IP2366 (the second module), and four USB-TYPEA ports of IP6525 (the third module).

[0067] The inverter converts the DC power of the input battery into 220V 50Hz AC power for external output to supply conventional mains equipment.

[0068] The IP2366 is a lithium battery charge and discharge control chip that supports PD3.1. It can perform automatic buck-boost control. The maximum input and output both support 28V 5A, that is, 140W. Since this module has four channels, the maximum discharging power is 560W. Additionally, its power can be controlled by modifying the register values through the I2C bus. It can control whether each voltage level is enabled, the current corresponding to each level, etc. It can also obtain its status information, such as the charge and discharge status, voltage, current, and power information.

[0069] The IP6525 is a buck control chip that supports multiple fast charging protocols. The maximum output voltage is 12V, and the maximum output power is 22.5W. Since this module has four channels, the maximum discharging power is 90W.

[0070] The above three modules are the discharging part, and the total power can reach up to 1110W at most.

[0071] The charging part is a lithium battery charger.

[0072] The control part is responsible for the microprocessor, which is used to adjust the working state of the whole machine.

[0073] Obtaining the real-time operating power: The second module, namely IP2366, can obtain the status through the I2C bus. Therefore, no additional sensors are required to obtain the real-time power. For the other two modules, additional current detection needs to be added, and multiplying it by the battery voltage gives the real-time power. Additionally, the BMS module of the battery will also provide the battery status. The data of the above three modules and the data of the BMS can be mutually verified.

[0074] The battery itself has internal resistance. Therefore, during high-power charging and discharging, the battery will heat up, which may pose risks. Additionally, limited by the battery performance, there are also requirements for the discharging current magnitude, that is, the discharging power should be within the rated value. The above two points both require the total discharging power of the battery. The discharging ability of the battery is affected by temperature. Each temperature range corresponds to a maximum discharging current, that is, the current at the maximum power. This maximum power is called the calibrated power here. In this method, this task is completed by the microprocessor. The microprocessor is responsible for obtaining various information and then performing corresponding limiting measures such as power limitation, or status improvement measures such as increasing the fan speed according to the information. The specific operation logic diagram is also carried out according to this.

[0075] The power limits in this system are divided into four levels:

[0076] First is the unrestricted level, where the power of no device is limited.

[0077] Secondly, under the first-level power limit, that is, when the total power of Module 1 and Module 2 exceeds the calibrated power under the current battery state, the discharge power of Module 2 (i.e., IP2366) will be limited. The original single-channel discharge capacity of 140W will be limited to 65W, and the discharge capacity of 20V 3.25A will be retained.

[0078] Thirdly, under the second-level power limit, that is, after the first-level power limit has been carried out and the total power of the three modules still exceeds the calibrated power under the current battery state, the discharge output capacity of Module 3 will be turned off. The measure is to turn off the power supply input of Module 3.

[0079] Finally, under the third-level power limit, that is, after the second-level power limit has been carried out and the total discharge power (i.e., the total power of Module 1 and Module 2) exceeds the calibrated power under the current battery state, the output of Module 2 will be turned off sequentially until the total discharge power is below the battery calibrated power.

[0080] After the system enters the normal working state, the processor obtains the information of each sensor to judge whether there is any abnormality. The abnormalities are limited to two aspects: power and temperature, that is, the matching of the total battery output power and the calibrated power, and the matching of the fan speed and the temperature. In terms of power, if the power reaches the power limit condition, the required power limit level will be judged sequentially to achieve the power limit. At the same time, it will also continuously monitor whether the limit conditions can be relaxed. If the conditions are met, it will return to the first-level power limit level. In terms of temperature, if the battery temperature or the system temperature is too high or too low (here, the high or low temperature is compared with the calibration of the battery or system temperature and the fan speed, and this calibration is written in advance), the fan speed will be increased or decreased correspondingly to achieve temperature control and maintain the good working state of the battery and the system.

[0081] Through the above specific implementation manners, those skilled in the art of the said technical field can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific implementation manners. Based on the disclosed implementation manners, those skilled in the art of the said technical field can arbitrarily combine different technical features to thus implement different technical solutions.

[0082] Except for the technical features described in the specification, the rest are known technologies to those skilled in the art.

Claims

1. A method for designing a multi-channel power supply with dynamic power adjustment, characterized in that: The outdoor power supply includes: energy storage part, discharge part, charging part and control part. The energy storage part is provided with a BMS management system; The discharge part includes a 500W inverter, four IP2366 USB-TYPEC ports, and four IP6525 USB-TYPEA ports; The charging part is a lithium battery charger; The control part is controlled by a microprocessor and is used to adjust the working state of the whole machine; Power control includes: obtaining real-time operating power; after obtaining various information, the microprocessor executes corresponding restriction measures including power restriction or state improvement measures according to the information.

2. A method for designing a multi-channel power supply with dynamic power adjustment according to claim 1, characterized in that: The energy storage part is a group of 6 lithium batteries connected in series; the total power is 1kWh.

3. The method for designing a multi-channel power supply with dynamic power adjustment according to claim 1, characterized in that: For the discharge part, The inverter converts the DC power of the input battery into 220V 50Hz AC power for external output and is used by conventional mains equipment; The IP2366 is a lithium battery charge and discharge control chip that supports PD3.

1. It can automatically increase or decrease the voltage. The maximum input and output support 28V 5A, that is, 140W. The maximum discharge power of the four-channel IP2366 is 560W. The IP6525 is a step-down control chip that supports multiple fast charging protocols, with a maximum output voltage of 12V and a maximum output power of 22.5W. The maximum discharge power of the four-channel IP6525 is 90W. The above three modules are the discharge part, and the total power can reach up to 1110W.

4. The method for designing a multi-channel power supply with dynamic power adjustment according to claim 3, characterized in that: The power of the IP2366 can be controlled by modifying the value of the register through the I2C bus, including whether each voltage gear is open and the control of the current corresponding to each gear; its status information can also be obtained, including the charging and discharging status, voltage, current and power information.

5. The method for designing a multi-channel power supply with dynamic power adjustment according to claim 1, characterized in that: The real-time operating power is obtained, The IP2366 module can obtain real-time operating power through the I2C bus. Both the IP6525 and the inverter module have added current detection. The real-time operating power is obtained by multiplying the current and the battery voltage. The BMS management module can provide the battery status, and the data of the IP2366 module, IP6525 module and inverter module can be cross-checked with the data of the BMS.

6. A method for designing a multi-channel power supply with dynamic power adjustment according to claim 1 or 5, characterized in that: The power limits include: The first is unlimited, in which case no device is power-limited; Secondly, under the first-level power limit, that is, when the total power of the 500W inverter module and the IP2366 module exceeds the rated power under the current battery state, the discharge power of the IP2366 module will be limited, limiting the original single-channel 140W discharge capacity to 65W, retaining the 20V 3.25A discharge capacity; Secondly, under the second-level power limit, that is, after the first-level power limit has been implemented, if the total power of the three modules still exceeds the rated power under the current battery state, the discharge output capacity of the IP6525 module will be turned off. The measure is to turn off the power supply input of the IP6525 module; Finally, under the third level power limitation, that is, after the second level power limitation has been performed, the total discharge power, that is, the total power of the 500W inverter module and the IP2366 module, exceeds the rated power under the current battery state, then the output of the IP2366 module is shut down in sequence until the total discharge power is below the battery rated power.

7. The method for designing a multi-channel power supply with dynamic power adjustment according to claim 1, characterized in that: The said unlimited means that the power limit is released: the margin between the actual power and the rated power exceeds 100W.

8. The method for designing a multi-channel power supply with dynamic power adjustment according to claim 1, characterized in that: The status improvement measures include increasing the system fan speed.

9. The method for designing a multi-channel power supply with dynamic power adjustment according to claim 1, characterized in that: The process of implementing dynamic power adjustment in this method is as follows: After the system enters the normal working state, the processor obtains the information of each sensor to determine whether there is any abnormality, including power abnormality and temperature abnormality, that is, the matching of the total battery output power with the rated power and the matching of the fan speed with the temperature. If the power reaches the power limit condition, the required power limit level is determined in sequence to achieve the power limit. At the same time, it continuously monitors whether the limit condition can be relaxed. If the condition is met, it returns to the first power limit level. If the battery temperature or system temperature is too high or too low, the fan speed will be increased or decreased accordingly to achieve temperature control to keep the battery and system in good working condition.

10. A multi-channel power supply system with dynamic power adjustment, characterized in that: Including: energy storage module, discharge module, charging module, control module; The energy storage module is provided with a BMS management system; The discharge module includes a 500W inverter, four IP2366 USB-TYPEC ports, and four IP6525 USB-TYPEA ports; The charging module is a lithium battery charger; The control module is managed by a microprocessor and is used to adjust the working state of the whole machine; The system realizes dynamic power adjustment of multiple power supplies through the method described in any one of claims 1 to 9.

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