Industrial and commercial energy storage and supply system

Abstract

The utility model relates to the technical field of industrial and commercial storage systems, in particular to an industrial and commercial storage energy supply system, which comprises a power supply module, and an alternating current input module and a direct current input module which are used for supplying power to the power supply module, the power supply module comprises an alternating current input terminal, a direct current input terminal and an output terminal, an alternating current branch is arranged between the alternating current input terminal and the output terminal, a direct current branch is arranged between the direct current input terminal and the output terminal, and monitoring switching modules are arranged on the alternating current branch and the direct current branch; the monitoring switching module comprises a detection module used for detecting the voltage of a branch where the monitoring switching module is located and a control switching module used for controlling the on-off of the branch where the monitoring switching module is located. And the output terminal is connected with electric equipment. According to the invention, the mains supply and the industrial and commercial storage battery cluster can be automatically switched for power supply, so that the normal power utilization effect of the power utilization system is ensured.

Description

Technical Field

[0001] This application relates to the technical field of industrial and commercial energy storage systems, and in particular to an industrial and commercial energy storage and supply system. Background Technology

[0002] Currently, the power supply for critical equipment such as EMS, BMS, and fire protection systems in industrial and commercial storage systems is provided through two methods: ① "AC to DC": Adding a switching power supply to the AC input line outside the high-voltage box, or using a "UPS + switching power supply" method to convert the AC input line to DC 24V power. ② "DC to DC": Adding a DC / DC conversion module after the main positive and main negative terminals of the system battery, which converts the battery voltage up to 1500V to DC 24V power supply.

[0003] Under the power supply method described in "①" above, the entire industrial and commercial energy storage system must be connected to the grid. If there is no mains power, the entire system will either immediately lose power and become inoperable, potentially leading to data loss; or, with the support of a UPS, the system equipment can be shut down to prevent data loss. However, in either case, the system cannot function without mains power. Moreover, to reduce costs, most industrial and commercial energy storage systems no longer include UPS equipment.

[0004] In the power supply method described in "②" above, power is not supplied through AC conversion, but rather through a DC1500V to DC24V module, utilizing the system's own battery module. In this case, even when connected to the grid with mains power, the system cannot utilize mains power and will continuously consume the system's internal battery, which will damage the battery in the long run. Most importantly, it will affect the conversion efficiency of industrial and commercial energy storage, impacting user profits. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides an industrial and commercial energy storage and supply system, which has the advantage of automatically switching between mains power and industrial and commercial energy storage battery clusters, thereby ensuring the normal power supply of the power system.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] An industrial and commercial energy storage and supply system includes a power module and an AC input module and a DC input module for supplying power to the power module;

[0008] The power module includes an AC input terminal, a DC input terminal, and an output terminal. An AC branch is provided between the AC input terminal and the output terminal, and a DC branch is provided between the DC input terminal and the output terminal. A monitoring and switching module is provided on both the AC branch and the DC branch.

[0009] The monitoring switching module includes a detection module for detecting the voltage of its own branch and a control switching module for controlling the on / off state of its own branch.

[0010] The output terminal is connected to electrical equipment.

[0011] The above technical solution involves detecting the voltage of each branch through detection modules on the AC and DC branches. The branch with the higher voltage will be selected for power supply by the control switching module, while the other power supply will be cut off to ensure the power supply to the output load. This ensures that the system will not experience sudden power outages or data loss due to failure to save data in time, whether it is connected to the grid or off-grid, thus greatly improving the safety and reliability of the energy storage system.

[0012] As a preferred embodiment of this application, the detection module includes a DC OK relay connected to one of the circuits in the AC circuit or DC branch.

[0013] The above technical solution is achieved by using DC OK relay contacts to monitor the output status of each branch, and it has an ultra-wide operating temperature range of -40 to +80℃.

[0014] As a preferred embodiment of this application, the control switching module includes a control switch.

[0015] The above technical solution is implemented to control on / off states and prevent inrush situations.

[0016] As a preferred embodiment of this application, the AC input module includes a switching power supply, the input terminal of which is connected to the mains power, and the output terminal of which is connected to the AC input terminal.

[0017] The above technical solution enables the 220V AC mains power to be converted into 24V DC power and input into the AC branch through a switching power supply, thereby achieving the effect of mains power supply.

[0018] As a preferred embodiment of this application, the DC input module includes a battery cluster and a DC / DC module connected to the battery cluster, wherein the DC / DC module is connected to a DC input terminal.

[0019] To achieve the above technical solution, the DC / DC module converts the high-voltage DC power of the battery cluster into low-voltage 24V DC power for supplying to the DC branch, thereby realizing the effect of powering the energy storage battery.

[0020] As a preferred embodiment of this application, the power module further includes a grounding protection circuit, which is located at the parallel connection of the AC branch and the DC branch, and a capacitor is provided on the grounding protection circuit.

[0021] Implementing the above technical solutions can make the system circuits safer and more reliable.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The detection modules on the AC and DC branches detect the voltage of their respective branches. The control switching module selects the power supply of the branch with the higher voltage and cuts off the other power supply at the same time to ensure the power supply to the output load. This ensures that the system will not experience sudden power outages or data loss due to failure to save data in time, whether it is connected to the grid or off the grid, thus greatly improving the safety and reliability of the energy storage system. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Reference numerals: 1. AC input module; 11. Switching power supply; 2. DC input module; 21. Battery cluster; 22. DC / DC module; 3. Power module; 31. AC input terminal; 32. DC input terminal; 33. Output terminal; 34. AC branch; 35. DC branch; 36. DC OK relay; 37. Control switch; 38. Protection circuit; 4. Electrical equipment. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0028] This application discloses an industrial and commercial energy storage and supply system. (Refer to...) Figure 1 The novel industrial and commercial energy storage circuit includes a power supply module and an AC input module and a DC input module for supplying power to the power supply module. The power supply module includes AC input terminals, DC input terminals, and output terminals. An AC branch is provided between the AC input terminals and the output terminals, and a DC branch is provided between the DC input terminals and the output terminals. A monitoring and switching module is provided on both the AC branch and the DC branch. The monitoring and switching module includes a detection module for detecting the voltage of its own branch and a control switching module for controlling the on / off state of its own branch. The output terminals are connected to electrical equipment.

[0029] The system detects the voltage of each branch by the detection modules on the AC and DC branches. The system selects the power supply from the branch with the higher voltage and cuts off the other power supply at the same time to ensure the power supply to the output load. This ensures that the system will not experience sudden power outages or data loss due to failure to save data in time, whether it is connected to the grid or off the grid, thus greatly improving the safety and reliability of the energy storage system.

[0030] The detection module includes a DC OK relay connected to one of the circuits in the AC circuit or DC branch. The DC OK relay contacts are used to monitor the output status in each branch and have an ultra-wide operating temperature range of -40 to +80°C.

[0031] The control switching module includes a control switch and parallel diodes for controlling on / off switching and preventing inrush current.

[0032] The power module also includes a grounding protection circuit, which is set at the parallel connection of the AC branch and the DC branch. The grounding protection circuit is equipped with a capacitor, which can make the system circuit safer and more reliable.

[0033] The AC input module includes a switching power supply. The input terminal of the switching power supply is connected to the mains power, and the output terminal of the switching power supply is connected to the AC input terminal. That is, the 220V AC mains power can be converted into 24V DC power and input into the AC branch through the switching power supply, thereby achieving the effect of mains power supply.

[0034] The DC input module includes a battery cluster and a DC / DC module connected to the battery cluster. The DC / DC module is connected to the DC input terminal so that the DC / DC module can convert the high-voltage DC power of the battery cluster into low-voltage 24V DC power for supplying to the DC branch, thereby achieving the effect of powering the energy storage battery.

[0035] The implementation principle of an industrial and commercial energy storage and supply system according to an embodiment of this application is as follows: the detection modules on the AC and DC branches detect the voltage of their respective branches. The power supply of the branch with the higher voltage is selected by the control switching module, while the other power supply is cut off to ensure the power supply to the output load. This ensures that the system will not experience sudden power outages or data loss due to failure to save data in time, whether it is connected to the grid or off the grid, thus greatly improving the safety and reliability of the energy storage system.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An industrial and commercial energy storage and supply system, characterized in that: It includes a power supply module and an AC input module and a DC input module for supplying power to the power supply module; The power module includes an AC input terminal, a DC input terminal, and an output terminal. An AC branch is provided between the AC input terminal and the output terminal, and a DC branch is provided between the DC input terminal and the output terminal. A monitoring and switching module is provided on both the AC branch and the DC branch. The monitoring switching module includes a detection module for detecting the voltage of its own branch and a control switching module for controlling the on / off state of its own branch. The detection module includes a DC OK relay connected to one of the circuits in the AC circuit or DC branch. The output terminal is connected to electrical equipment.

2. The industrial and commercial energy storage and supply system according to claim 1, characterized in that: The control switching module includes a control switch.

3. The industrial and commercial energy storage and supply system according to claim 1, characterized in that: The AC input module includes a switching power supply, the input terminal of which is connected to the mains power, and the output terminal of which is connected to the AC input terminal.

4. The industrial and commercial energy storage and supply system according to claim 1, characterized in that: The DC input module includes a battery cluster and a DC / DC module connected to the battery cluster, and the DC / DC module is connected to the DC input terminal.

5. The industrial and commercial energy storage and supply system according to claim 1, characterized in that: The power module also includes a grounding protection circuit, which is located at the parallel connection of the AC branch and the DC branch, and a capacitor is installed on the grounding protection circuit.

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