A comprehensive power management system and method

Abstract

The present invention relates to the field of power management technology, and provides an integrated power management system and method, including a monitoring module and several multi-energy management modules, the multi-energy management modules are connected by a bus bar, and the multi-energy management modules at different addresses can be connected to the same type of source or load; the monitoring module is used to control the switching mode of the multi-energy management module according to the type of source or load connected to the multi-energy management module, and send the control method to the multi-energy management module; the multi-energy management module is used to manage the output of the connected power supply, supply power to the connected load, or charge and discharge the connected battery pack based on the control method.

Description

Technical Field

[0001] The present invention relates to the technical field of power management, and in particular to an integrated power management system and method. Background Art

[0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] With the upgrade and iteration of communication networks, communication base stations often have multiple devices (such as 4G and 5G devices co-located, and multiple operators' devices co-located). For example, the base station is built for the 4G network, and the supporting power supply system and battery system are planned according to the 4G load power; in the 5G era, the base station needs to add 5G equipment while retaining the 4G network, but the original power supply and battery do not have the margin to support the 5G load, so a power supply system is often added, resulting in the coexistence of multiple power supply systems in one base station. Each power supply system has an independent monitoring module, an independent rectifier module and an independent battery, which cannot be managed in a unified manner.

[0004] Moreover, when the base station needs to superimpose photovoltaic power or share one set of batteries, it is often impossible to achieve this due to the problem of voltage differences among multiple sets of power supplies.

[0005] In addition, due to interface problems, some power supply systems are often unable to connect to the dynamic environment system, which greatly increases the difficulty of daily maintenance and needs to be sorted out urgently. Summary of the invention

[0006] In order to address the deficiencies of the prior art, the present invention provides a comprehensive power management system and method, in which multi-energy management modules at different addresses can be connected to the same type of source or load, and the monitoring module controls the switching mode of the multi-energy management module according to the type of source or load connected to the multi-energy management module, thereby realizing unified management of multiple power supplies.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: A first aspect of the present invention provides an integrated power management system.

[0008] An integrated power management system includes a monitoring module and a plurality of multi-energy management modules, wherein the multi-energy management modules are connected via a busbar, and the multi-energy management modules at different addresses can be connected to the same type of source or load; The monitoring module is used to control the switching mode of the multi-energy management module according to the type of source or load connected to the multi-energy management module, and send the control mode to the multi-energy management module; The multi-energy management module is used to manage the output of the connected power source, supply power to the connected load, or charge and discharge the connected battery pack based on the control method.

[0009] Furthermore, if the multi-energy management module is connected to the old power system, the multi-energy management module is controlled to switch to the old power system mode, and there is a shared responsibility mechanism, a priority use mechanism or a competition mechanism in the old power system mode; The shared responsibility mechanism is: if the busbar is connected to a rectifier module, the monitoring module sends the same output voltage to the multi-energy management module and the rectifier module, and the old power supply system shares the load power supply and battery pack charging through the multi-energy management module and the rectifier module; The priority use mechanism is: if the output voltage sent by the monitoring module to the multi-energy management module is higher than the output voltage value of the rectifier module, the old power supply system is used first for power supply; The competition mechanism is as follows: the output voltage sent by the monitoring module to the multi-energy management module is consistent with the voltage of the integrated power management system, and the old power system and the rectifier module compete for output power according to the characteristics of the multi-energy management module.

[0010] Furthermore, if the multi-energy management module is connected to a battery pack, the multi-energy management module is controlled to switch to a battery pack power supply mode; In the battery pack power supply mode, if the battery pack is used as a backup power source, when the battery pack is discharging, the discharge voltage sent by the monitoring module to the multi-energy management module is the busbar voltage; when the battery pack is charging, the charging voltage sent by the monitoring module to the multi-energy management module is the equalization charging voltage or the floating charging voltage of the battery; In the battery pack power supply mode, if the battery pack is used as energy storage, charging and discharging are performed according to the peak and valley periods of electricity consumption.

[0011] Furthermore, if the multi-energy management module is connected to a photovoltaic module, the multi-energy management module is controlled to switch to a photovoltaic module mode; In the photovoltaic module mode, if the busbar is not connected to the rectifier module, the output voltage sent by the monitoring module to the multi-energy management module is higher than the busbar voltage; In the photovoltaic component mode, if the busbar is connected to a rectifier module, the monitoring module sends different output voltages to the rectifier module, the multi-energy management module connected to the photovoltaic component, and the multi-energy management module connected to the battery pack, so as to achieve the purpose of photovoltaic priority, peak shaving and valley filling, and utilization of old power sources.

[0012] Furthermore, if the multi-energy management module is connected to a remote load, the multi-energy management module is controlled to switch to a remote load mode.

[0013] A second aspect of the present invention provides a comprehensive power management method, comprising the following steps: The monitoring module controls the switching mode of the multi-energy management module according to the type of source or load connected to the multi-energy management module, and sends the control mode to the multi-energy management module; The multi-energy management module manages the output of the connected power source, supplies power to the connected load, or charges and discharges the connected battery pack based on the control method; Different multi-energy management modules are connected via a busbar, and multi-energy management modules at different addresses can be connected to the same type of source or load.

[0014] Furthermore, if the multi-energy management module is connected to the old power system, the multi-energy management module is controlled to switch to the old power system mode, and there is a shared responsibility mechanism, a priority use mechanism or a competition mechanism in the old power system mode; The shared responsibility mechanism is: if the busbar is connected to a rectifier module, the monitoring module sends the same output voltage to the multi-energy management module and the rectifier module, and the old power supply system shares the load power supply and battery pack charging through the multi-energy management module and the rectifier module; The priority use mechanism is: if the output voltage sent by the monitoring module to the multi-energy management module is higher than the output voltage value of the rectifier module, the old power supply system is used first for power supply; The competition mechanism is as follows: the output voltage sent by the monitoring module to the multi-energy management module is consistent with the voltage of the integrated power management system, and the old power system and the rectifier module compete for output power according to the characteristics of the multi-energy management module.

[0015] Furthermore, if the multi-energy management module is connected to a battery pack, the multi-energy management module is controlled to switch to a battery pack power supply mode; In the battery pack power supply mode, if the battery pack is used as a backup power source, when the battery pack is discharging, the discharge voltage sent by the monitoring module to the multi-energy management module is the busbar voltage; when the battery pack is charging, the charging voltage sent by the monitoring module to the multi-energy management module is the equalization charging voltage or the floating charging voltage of the battery; In the battery pack power supply mode, if the battery pack is used as energy storage, charging and discharging are performed according to the peak and valley periods of electricity consumption.

[0016] Furthermore, if the multi-energy management module is connected to a photovoltaic module, the multi-energy management module is controlled to switch to a photovoltaic module mode; In the photovoltaic module mode, if the busbar is not connected to the rectifier module, the output voltage sent by the monitoring module to the multi-energy management module is higher than the busbar voltage; In the photovoltaic component mode, if the busbar is connected to a rectifier module, the monitoring module sends different output voltages to the rectifier module, the multi-energy management module connected to the photovoltaic component, and the multi-energy management module connected to the battery pack, so as to achieve the purpose of photovoltaic priority, peak shaving and valley filling, and utilization of old power sources.

[0017] Furthermore, if the multi-energy management module is connected to a remote load, the multi-energy management module is controlled to switch to a remote load mode.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The integrated power management system described in the present invention can connect multiple energy management modules at different addresses to the same type of source or load, and the monitoring module controls the switching mode of the multiple energy management modules according to the type of source or load connected to the multiple energy management modules, thereby realizing unified management of multiple power supplies.

[0019] In the integrated power management system described in the present invention, the source or load connected to the multi-energy management module can be a photovoltaic component, thereby realizing photovoltaic superposition of the entire base station instead of superimposing it on one of the power systems.

[0020] In the integrated power management system described in the present invention, the source or load connected to the multi-energy management module can be an old power system, a photovoltaic module and a battery pack, thereby achieving mixed use of new and old power sources and reducing transformation costs.

[0021] The integrated power management system described in the present invention adds energy storage batteries to achieve the function of peak shaving and valley filling for the entire base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 This is a structural diagram of the integrated power management system of Example 1 of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0028] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meanings of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0029] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0030] Example 1 Embodiment 1 of the present invention provides a comprehensive power management system.

[0031] The present embodiment provides a comprehensive power management system that solves the problem of being unable to achieve unified management due to power supply voltage differences, facilitates daily maintenance, adds photovoltaic, energy storage and other energy-saving and cost-reduction solutions, and reduces operating costs.

[0032] This embodiment provides a comprehensive power management system, such as Figure 1 As shown, it includes several multi-function management modules (including multi-function management module 1, multi-function management module 2, ..., multi-function management module n, multi-function management module n+1) and a monitoring module.

[0033] The present embodiment provides a comprehensive power management system, which also includes a rectifier module. The rectifier module is optional. If the existing power capacity is sufficient, the rectifier module may not be selected; if the existing power capacity is insufficient, a rectifier module needs to be added.

[0034] Among them, several multi-energy management modules are respectively connected to the old power system, lead-acid / lithium iron battery pack, photovoltaic components and remote loads.

[0035] Among them, the monitoring module is communicatively connected with all the multi-functional management modules.

[0036] Among them, multiple multi-energy management modules are connected through a busbar to achieve circuit connectivity of the multi-energy management modules.

[0037] Among them, the rectifier module and the communication load are connected to multiple multi-energy management modules through a busbar, and the rectifier module is also communicatively connected to the monitoring module.

[0038] Among them, the rectifier module is connected to the mains input or the oil generator input.

[0039] The multi-energy management module adopts modular design and can be hot-swapped.

[0040] Before the multi-energy management module is connected to the device, it runs in the default mode (bidirectional DC / DC mode). When the multi-energy management module is inserted into the system slot, it can work normally.

[0041] Since the multi-energy management module needs to be connected to different sources or loads, the monitoring module needs to classify the multi-energy management modules according to the connected sources / loads. For classification, the backplane slot of the multi-energy management module needs to be identified by address. This address is a physical address, which is directly related to the location of the slot and has nothing to do with the inserted multi-energy management module. That is, different multi-energy management modules inserted into different slots have different addresses, and multi-energy management modules at different addresses can be connected to the same type of source or load.

[0042] The monitoring module has a display screen and buttons to facilitate human-computer interaction. After inserting the multi-energy management module into the slot, the buttons can be used to set it in the monitoring module according to the actual functional requirements of the multi-energy management module. For example, the multi-energy management module with serial number 1 (the default status is 1) is used to access the old power supply system. In the monitoring module, the multi-energy management module with serial number 1 is set to "other power supply access". The monitoring module will control the multi-energy management module with serial number 1 to execute the corresponding strategy, so that the existing old power supply of the base station can be connected. At the same time, the load borne by the old power supply can be allocated by setting the current limiting parameters of the multi-energy management module. When the power of the old power supply is relatively large, the old power supply can be connected to several multi-energy management modules at the same time. The monitoring module sets these multi-energy management modules to the same mode, and these multi-energy management modules will execute the same strategy at the same time and achieve current sharing.

[0043] In this embodiment, the monitoring module controls the multi-energy management module to switch modes according to the type of access device: when the type of device accessed by the multi-energy management module is an old power system, the monitoring module is controlled to switch to the old power system mode; when the type of device accessed by the multi-energy management module is a battery pack, the monitoring module is controlled to switch to the battery pack mode; when the type of device accessed by the multi-energy management module is a photovoltaic module, the monitoring module is controlled to switch to the photovoltaic module mode; when the type of device accessed by the multi-energy management module is a remote load, the monitoring module is controlled to switch to the remote load mode.

[0044] (1) Under the old power system model, a shared responsibility mechanism, priority use mechanism, and competition mechanism can be implemented.

[0045] Shared responsibility mechanism: The old power supply system is regarded as the rectifier module of the multi-energy management system to share the current of load power supply and battery charging. At this time, the monitoring module sends the same output voltage to the corresponding multi-energy management module and rectifier module. The old power supply system shares the load power supply and battery charging through the multi-energy management module and the rectifier module; when the system is not equipped with a rectifier module, the monitoring module sends the detected busbar voltage to the multi-energy management module connected to the old power supply.

[0046] Priority use mechanism: When the output voltage value sent by the monitoring module to the multi-energy management module connected to the old power supply system is higher than the output voltage value of the rectifier module, the old power supply system will be used first. At the same time, in order to make the old power supply system work at the highest efficiency stage, the output current limit value can be set for the multi-energy management module connected to the old power supply system so that the output of the old power supply is between 50% and 70% of the total power, which has the highest efficiency.

[0047] Competition mechanism: The monitoring module sends an output voltage to the multi-energy management module connected to the old power system that is consistent with the output voltage value of the rectifier module or the busbar detection voltage value to compete. At this time, since the output voltages of each module are the same, they will share the load and battery charging current.

[0048] (2) When connected to photovoltaic, lithium iron phosphate battery, lead-acid battery or remote load, the corresponding program is executed to make the multi-energy management module work in the correct mode, including photovoltaic module power supply mode, battery pack power supply mode and remote load power supply mode.

[0049] (201) Battery pack power supply mode: The selection is made according to the type of battery pack connected, the interface set and the capacity. In this embodiment, the types of battery packs are divided into lithium batteries and lead-acid batteries, and the working modes are divided into backup power and energy storage. Generally, lead-acid batteries are used for backup power, while lithium batteries or other high-cycle batteries are used for energy storage or backup power or reserve. When the integrated power management system is connected to multiple groups of batteries of different types, specifications and batches, each group of batteries needs to be connected to a multi-energy management module separately.

[0050] When the battery pack is used as a backup emergency power supply to supply power to the communication load, the multi-energy management module can be set to stabilized discharge. Generally, the output voltage is the busbar voltage at the beginning of discharge. When the battery pack is charged, the charging voltage sent by the monitoring module to the multi-energy management module is the battery equalization voltage or floating voltage.

[0051] When the battery pack is used as energy storage, it is charged and discharged according to the peak and valley periods of electricity consumption; at this time, the battery pack will also supply power to the communication load after the city power outage. At this time, if there is photovoltaic power, it will convert the power into electricity to supply power to the communication load together; if the city power is restored, if there is no photovoltaic power, the battery pack will be charged during the valley period. If there is photovoltaic power, the excess power converted by photovoltaic power will be used to charge the battery pack.

[0052] (202) When a photovoltaic module is connected to the multi-energy management module, in order to give priority to photovoltaic power generation: In scenario one, that is, when the integrated power management system does not have a rectifier module, the monitoring module will detect the busbar voltage V0, and record the voltage value V0 into the register, and then send V0+ΔV to the multi-energy management module corresponding to the photovoltaic input, and send the module startup instruction. Generally, ΔV is a positive number. In practical applications, ΔV is generally 0.5-1V, so that the output voltage of the multi-energy management module is higher than the busbar voltage when it is working, and it is used first; when the iron-lithium battery is used to realize the peak shaving and valley filling function, V0+ΔV1 is sent to the corresponding multi-energy management module during the peak electricity fee period. Generally, 0<ΔV1<ΔV, so that even during the peak electricity fee period, photovoltaic priority is still maintained, and the insufficient photovoltaic output is supplemented by the energy storage lithium battery.

[0053] When in scenario 2, that is, the integrated power management system is equipped with a rectifier module, the monitoring module directly sends different voltage values ​​to the rectifier module, the multi-energy management module connected to the photovoltaic power plant, and the multi-energy management module connected to the battery pack, so as to achieve the purpose of photovoltaic priority, peak shaving and valley filling, and old power utilization. The output voltage values ​​of the corresponding multi-energy management modules are in the following order: the voltage of the multi-energy management module connected to the photovoltaic power plant and the multi-energy management module connected to the battery pack when executing the peak discharge mode, the output voltage of the module connected to the old power source when adopting the priority output mechanism, and the output voltage of the rectifier module. When the multi-energy management module connected to the old power source executes the competition mechanism and the multi-energy management module connected to the battery pack adopts the backup power mode, the output voltage of the corresponding multi-energy management module can be set to be consistent with the voltage of the busbar or the rectifier module. For the multi-energy management module connected to the load, it is sufficient to send the corresponding output voltage.

[0054] (203) After entering the remote load power supply mode, the remote load power supply mode is executed. When the remote power supply is in progress, in order to reduce line loss, the output voltage of the multi-energy management module connected to the load needs to be set higher than the busbar voltage. Generally, the remote output power supply voltage is adjusted to 57V.

[0055] The present embodiment provides a comprehensive power management system, which realizes unified management of multiple power supplies; photovoltaics are superimposed on the entire base station instead of superimposing it on one of the power supply systems; new and old power supplies are mixed to reduce the cost of transformation; and energy storage batteries are added to realize the function of peak shaving and valley filling for the entire base station.

[0056] Example 2 Embodiment 2 of the present invention provides an integrated power management method, based on an integrated power management system as in embodiment 1, comprising the following steps: S1. Get recognition instructions.

[0057] S2. Based on the access device type of the multi-energy management module at each address, the type of the multi-energy management module of each serial number is set in the monitoring module. The access device types include old power supply systems, lead-acid / lithium iron battery packs, photovoltaic modules, and remote loads.

[0058] S3. The monitoring module controls the multi-energy management module to switch modes according to the type of device connected to the multi-energy management module: When the type of the device to which the multi-energy management module is connected is an old power system, the multi-energy management module is controlled to switch to the old power system mode; When the type of device connected to the multi-energy management module is a battery pack, the multi-energy management module is controlled to switch to the battery pack mode; When the type of device connected to the multi-energy management module is a photovoltaic module, the multi-energy management module is controlled to switch to the photovoltaic module mode; When the type of device connected to the multi-energy management module is a remote load, the multi-energy management module is controlled to switch to the remote load mode.

[0059] S4. After entering the old power system mode, obtain the execution instruction and execute the power supply strategy of the old power system: S41, when the execution instruction is obtained to be a shared execution, the shared power supply mechanism is executed. The shared power supply mechanism is: if the busbar is connected to a rectifier module, the monitoring module sends the same output voltage to the multi-energy management module and the rectifier module; if the busbar is not connected to a rectifier module, the monitoring module sends the busbar voltage to the multi-energy management module.

[0060] S42, when the acquired execution instruction is a competition instruction, execute the competition power supply mechanism. The competition mechanism is: the output voltage sent by the monitoring module to the multi-energy management module is consistent with the voltage of the integrated power management system, and competition is carried out.

[0061] S43, when the execution instruction is a priority instruction, the priority power supply mechanism is executed. The priority mechanism is: the output voltage sent by the monitoring module to the multi-energy management module is higher than the output voltage value of the rectifier module, so as to increase the voltage of the multi-energy management module connected to the old power management system, so that the power supply of the old power management system is executed first.

[0062] S5. After entering the battery pack power supply mode, the battery pack power supply mechanism is executed: in the battery pack power supply mode, if the battery pack is used as a backup power source, the output voltage sent by the monitoring module to the multi-energy management module is the busbar voltage; in the battery pack power supply mode, if the battery pack is used as energy storage, charging and discharging are performed according to the peak and valley periods of electricity consumption.

[0063] S6. After entering the photovoltaic module power supply mode, obtain the priority execution instruction and execute the photovoltaic priority power supply mechanism: in the photovoltaic module mode, if the busbar is not connected to the rectifier module, the output voltage sent by the monitoring module to the multi-energy management module is higher than the busbar voltage; in the photovoltaic module mode, if the busbar is connected to the rectifier module, the monitoring module sends different output voltages to the rectifier module, the multi-energy management module connected to the photovoltaic module, and the multi-energy management module connected to the battery pack, so as to achieve the purpose of photovoltaic priority, peak shaving and valley filling, and utilization of old power sources.

[0064] S7. After entering the remote load power supply mode, the remote load power supply mechanism is executed.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A comprehensive power management system, characterized in that: It includes a monitoring module and several multi-energy management modules, wherein the multi-energy management modules are connected via a busbar, and the multi-energy management modules at different addresses can be connected to the same type of source or load; The monitoring module is used to control the switching mode of the multi-energy management module according to the type of source or load connected to the multi-energy management module, and send the control mode to the multi-energy management module; The multi-energy management module is used to manage the output of the connected power source, supply power to the connected load, or charge and discharge the connected battery pack based on the control method.

2. The integrated power management system according to claim 1, characterized in that: If the multi-energy management module is connected to the old power system, the multi-energy management module is controlled to switch to the old power system mode, and there is a shared responsibility mechanism, a priority use mechanism or a competition mechanism in the old power system mode; The shared responsibility mechanism is: if the busbar is connected to a rectifier module, the monitoring module sends the same output voltage to the multi-energy management module and the rectifier module, and the old power supply system shares the load power supply and battery pack charging through the multi-energy management module and the rectifier module; The priority use mechanism is: if the output voltage sent by the monitoring module to the multi-energy management module is higher than the output voltage value of the rectifier module, the old power supply system is used first for power supply; The competition mechanism is as follows: the output voltage sent by the monitoring module to the multi-energy management module is consistent with the voltage of the integrated power management system, and the old power system and the rectifier module compete for output power according to the characteristics of the multi-energy management module.

3. The integrated power management system according to claim 1, characterized in that: If the multi-energy management module is connected to a battery pack, the multi-energy management module is controlled to switch to a battery pack power supply mode; In the battery pack power supply mode, if the battery pack is used as a backup power source, when the battery pack is discharging, the discharge voltage sent by the monitoring module to the multi-energy management module is the busbar voltage; when the battery pack is charging, the charging voltage sent by the monitoring module to the multi-energy management module is the equalization charging voltage or the floating charging voltage of the battery; In the battery pack power supply mode, if the battery pack is used as energy storage, charging and discharging are performed according to the peak and valley periods of electricity consumption.

4. The integrated power management system according to claim 1, characterized in that: If the multi-energy management module is connected to the photovoltaic module, the multi-energy management module is controlled to switch to the photovoltaic module mode; In the photovoltaic module mode, if the busbar is not connected to the rectifier module, the output voltage sent by the monitoring module to the multi-energy management module is higher than the busbar voltage; In the photovoltaic component mode, if the busbar is connected to a rectifier module, the monitoring module sends different output voltages to the rectifier module, the multi-energy management module connected to the photovoltaic component, and the multi-energy management module connected to the battery pack, so as to achieve the purpose of photovoltaic priority, peak shaving and valley filling, and utilization of old power sources.

5. The integrated power management system according to claim 1, characterized in that: If the multi-energy management module is connected to a remote load, the multi-energy management module is controlled to switch to a remote load mode.

6. A comprehensive power management method, characterized in that: include: The monitoring module controls the switching mode of the multi-energy management module according to the type of source or load connected to the multi-energy management module, and sends the control mode to the multi-energy management module; The multi-energy management module manages the output of the connected power source, supplies power to the connected load, or charges and discharges the connected battery pack based on the control method; Different multi-energy management modules are connected via a busbar, and multi-energy management modules at different addresses can be connected to the same type of source or load.

7. A comprehensive power management method as claimed in claim 6, characterized in that: If the multi-energy management module is connected to the old power system, the multi-energy management module is controlled to switch to the old power system mode, and there is a shared responsibility mechanism, a priority use mechanism or a competition mechanism in the old power system mode; The shared responsibility mechanism is: if the busbar is connected to a rectifier module, the monitoring module sends the same output voltage to the multi-energy management module and the rectifier module, and the old power supply system shares the load power supply and battery pack charging through the multi-energy management module and the rectifier module; The priority use mechanism is: if the output voltage sent by the monitoring module to the multi-energy management module is higher than the output voltage value of the rectifier module, the old power supply system is used first for power supply; The competition mechanism is as follows: the output voltage sent by the monitoring module to the multi-energy management module is consistent with the voltage of the integrated power management system, and the old power system and the rectifier module compete for output power according to the characteristics of the multi-energy management module.

8. A comprehensive power management method as claimed in claim 6, characterized in that: If the multi-energy management module is connected to a battery pack, the multi-energy management module is controlled to switch to a battery pack power supply mode; In the battery pack power supply mode, if the battery pack is used as a backup power source, when the battery pack is discharging, the discharge voltage sent by the monitoring module to the multi-energy management module is the busbar voltage; when the battery pack is charging, the charging voltage sent by the monitoring module to the multi-energy management module is the equalization charging voltage or the floating charging voltage of the battery; In the battery pack power supply mode, if the battery pack is used as energy storage, charging and discharging are performed according to the peak and valley periods of electricity consumption.

9. A comprehensive power management method as claimed in claim 6, characterized in that: If the multi-energy management module is connected to the photovoltaic module, the multi-energy management module is controlled to switch to the photovoltaic module mode; In the photovoltaic module mode, if the busbar is not connected to the rectifier module, the output voltage sent by the monitoring module to the multi-energy management module is higher than the busbar voltage; In the photovoltaic component mode, if the busbar is connected to a rectifier module, the monitoring module sends different output voltages to the rectifier module, the multi-energy management module connected to the photovoltaic component, and the multi-energy management module connected to the battery pack, so as to achieve the purpose of photovoltaic priority, peak shaving and valley filling, and utilization of old power sources.

10. The integrated power management method according to claim 6, characterized in that: If the multi-energy management module is connected to a remote load, the multi-energy management module is controlled to switch to a remote load mode.

Images