Charging and discharging system based on Internet of Things

Abstract

The utility model discloses a charging and discharging system based on Internet of Things. Belongs to the technical field of charge-discharge systems. The system comprises a switch, the switch is respectively connected with a region management unit, an anti-countercurrent metering management unit and a plurality of charging and discharging management units, and the switch is connected with a main data server and a network server through the Internet; the utility model aims to provide the charging and discharging system based on the Internet of Things, which is novel in structure, stable in operation and good in effect; the method is used for charge-discharge management of power batteries.

Description

Technical Field

[0001] This utility model relates to a charging and discharging system, and more specifically, to a charging and discharging system based on the Internet of Things. Background Technology

[0002] Currently, a large number of retired power batteries are facing a long-term "scrap wave," and the following problems urgently need attention:

[0003] 1. Huge quantity of batteries to be recycled: According to the "Research Report on the Development Trend and Investment Risk of China's Power Battery Recycling Industry from 2024 to 2028" released by China Business Industry Research Institute, the actual recycling volume of retired power batteries in 2024 is expected to exceed 350,000 tons.

[0004] 2. Difficult to recycle: Currently, dismantling and recycling are low-profit, highly dangerous, and highly polluting, so recycling companies are not very enthusiastic.

[0005] 3. The following are the core difficulties in the existing domestic technology for the cascade utilization of batteries:

[0006] (1) Currently, all battery systems use BMS+EMS management systems, and the consistency problem is difficult to solve technically.

[0007] (2) Due to the different performance of batteries, the entire battery system is like a series of water tanks of different sizes, which are supplied with water (charged) and discharged (discharged) by a unified pipeline. Only one control switch is set on the pipeline. When one water tank is full, the water supply (charging) is stopped by the control switch. When one water tank is empty, the water discharge (discharge) is stopped by the control switch. There is a serious "bucket effect (short plank effect)".

[0008] With the continuous advancement of the tiered utilization of retired power batteries, charging and discharging systems based on the reuse of retired power batteries are also emerging. Current charging and discharging systems suffer from outdated architectures and the inability to collect data from each battery in a timely manner, thus failing to accurately assess the status of each battery and potentially leading to safety hazards. Utility Model Content

[0009] The purpose of this invention is to address the shortcomings of the existing technology by providing a novel, stable, and effective charging and discharging system based on the Internet of Things.

[0010] The technical solution of this utility model is implemented as follows: a charging and discharging system based on the Internet of Things, the system includes a switch, which is connected to a regional management unit, an anti-backflow metering management unit and several charging and discharging management units respectively, and the switch is connected to a main data server and a network server through the Internet.

[0011] In the aforementioned IoT-based charging and discharging system, the area management unit is an industrial control computer.

[0012] In the aforementioned IoT-based charging and discharging system, the anti-backflow metering management unit includes an anti-backflow module connected to a switch, and a metering meter and a control meter connected to the anti-backflow module.

[0013] In the aforementioned IoT-based charging and discharging system, the anti-reverse current module is an industrial control computer.

[0014] In the above-mentioned IoT-based charging and discharging system, the charging and discharging management unit includes a charging and discharging management node connected to a switch and several charging and discharging modules connected to the charging and discharging management node.

[0015] In the aforementioned IoT-based charging and discharging system, the charging and discharging management node is an industrial control computer.

[0016] In the above-mentioned IoT-based charging and discharging system, the charging and discharging module includes several rechargeable batteries connected in series in sequence, each rechargeable battery is connected to a battery control board, and the battery control board is located on the side of the corresponding rechargeable battery.

[0017] The positive and negative terminals of the battery pack, composed of each rechargeable battery, are connected to the inverter module, and each battery control board and inverter module are connected to the charge and discharge management node.

[0018] In the aforementioned IoT-based charging and discharging system, the network server has a built-in data storage unit.

[0019] In the aforementioned IoT-based charging and discharging system, the network server is connected to external network users.

[0020] In the above-mentioned IoT-based charging and discharging system, the battery control board is connected to the main circuits at the positive and negative ends of each rechargeable battery through two voltage sampling lines; an automatic switching element is provided on the main circuit on one side of each rechargeable battery, and the automatic switching element is connected to the battery control board through a switch control circuit; a bypass line that bypasses the corresponding rechargeable battery is connected between the automatic switching element and the main circuit.

[0021] With the above-described structure, this invention connects the charging / discharging management unit, the regional management unit, and the anti-backflow metering management unit via a switch to achieve intranet management of the system. The regional management unit coordinates and manages the entire internal system and caches real-time data. Furthermore, it connects to the main data server and network server via the internet for cloud data storage while facilitating system access for external users. Attached Figure Description

[0022] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a connection diagram of the charging and discharging module of this utility model.

[0025] In the diagram: 1. Switch; 2. Area Management Unit; 3. Anti-backflow Metering Management Unit; 3a. Anti-backflow Module; 3b. Meter; 3c. Control Meter; 4. Charge / Discharge Management Unit; 5. Master Data Server; 6. Network Server; 7. Charge / Discharge Management Node; 8. Charge / Discharge Module; 8a. Rechargeable Battery; 8b. Battery Measurement and Control Board; 8c. Inverter Module; 8d. Automatic Switching Component; 8e. Bypass Line; 9. External Network User. Detailed Implementation

[0026] See Figure 1 As shown, this utility model discloses a charging and discharging system based on the Internet of Things. The system includes a switch 1, which is connected to a regional management unit 2, an anti-backflow metering management unit 3, and several charging and discharging management units 4. The switch 1 is connected to a main data server 5 and a network server 6 via the Internet.

[0027] Meanwhile, the network server 6 has a built-in data storage unit. The network server 6 is connected to the external network user 9. The external network user can only access relevant data within the network server, and this data can be retrieved from the main data server. The main data server cannot be directly accessed by external network users; only internal network users can access it directly. This ensures the security of the main data server. The network server has a high level of security protection, and data transmission with external network users through it effectively improves the overall security level of the discharge system.

[0028] The regional management unit is used internally to analyze and process all data collected from the entire regional system. Then, through the cooperation of switches and the Internet, the relevant data is stored on a network server. The network server then sends the data to the main data server for storage, realizing the long-term storage of relevant data and making it available for external network users to access and view through the network server.

[0029] Preferably, the area management unit 2 has a built-in data caching unit for caching all data uploaded by the charging and discharging management unit. Otherwise, uploading all data to the network server would result in excessive data transmission, leading to problems such as slow system operation.

[0030] Preferably, the anti-backflow metering management unit 3 includes an anti-backflow module 3a connected to the switch 1, and a metering meter 3b and a control meter 3c connected to the anti-backflow module 3a. The anti-backflow metering unit is used for sampling, calculation, issuing anti-backflow coefficients, and storing charging and discharging power data. In this embodiment, the anti-backflow module 3a is an industrial control computer. Preferably, the charging and discharging management unit 4 includes a charging and discharging management node 7 connected to the switch 1 and several charging and discharging modules 8 connected to the charging and discharging management node 7. The number of charging and discharging modules is preferably 2-6 groups. In this embodiment, the charging and discharging management node 7 is an industrial control computer. The industrial control computer uses a self-developed Linux-based system as the charging and discharging management node, which plays a role in multi-level security protection, and the system has the advantages of small size and fast operation speed.

[0031] In this embodiment, the charging and discharging module 8 includes several rechargeable batteries 8a connected in series in sequence. Each rechargeable battery 8a is connected to a battery control board 8b, which is located on the side of the corresponding rechargeable battery 8a.

[0032] The positive and negative terminals of the battery pack, composed of rechargeable batteries 8a, are connected to the inverter module 8c, respectively. Each battery control board 8b and the inverter module 8c are connected to the charge and discharge management node 7.

[0033] See Figure 2 As shown, in a further preferred embodiment, the battery control board 8b is connected to the main circuits at the positive and negative ends of each corresponding rechargeable battery 8a via two voltage sampling lines; an automatic switch element 8d is provided on the main circuit on one side of each rechargeable battery 8a, and the automatic switch element 8d is connected to the battery control board 8b via a switch control circuit; a bypass line 8e, bypassing the corresponding rechargeable battery 8a, is connected between the automatic switch element 8d and the main circuit. The control board directly detects and acquires relevant parameters such as voltage and temperature of the battery under test.

[0034] By using bypass lines and having two signal lines on both sides of each rechargeable battery for voltage detection, the battery control board can directly acquire relevant parameters such as voltage and temperature of the corresponding battery. This allows for local control of each battery cell and also enables data feedback to the next higher level of control, namely the charge / discharge management node. The charge / discharge management node then transmits the data to the regional management unit on the internal network via a switch or to the relevant server via the Internet. The charge / discharge management node or regional management unit then performs independent auxiliary control of each rechargeable battery cell according to specific settings. The connection or disconnection of one battery cell will not affect the remaining batteries.

[0035] More importantly, the battery monitoring and control board directly detects and acquires battery parameters from the nearest location and has the authority to directly control the corresponding battery to exit the system. This greatly ensures the safety of system operation and avoids safety accidents caused by the inability to control the battery in a timely manner when the monitoring and control board fails to communicate with the upper-level control terminal or data processing terminal.

[0036] Meanwhile, rechargeable batteries that have exited the charging and discharging system are still under real-time monitoring by the charging and discharging management node. If the charging and discharging management node detects an abnormality in a rechargeable battery, the system will issue an alarm or shut down the system based on the actual situation to prevent danger from occurring.

[0037] During charging and discharging, even if the charging and discharging management node malfunctions or the communication line is disconnected, the rechargeable battery will not be overcharged or over-discharged, thus preventing any danger. Compared to existing technologies, this method can effectively manage each battery independently, preventing overcharging, over-discharging, and overheating within its original performance state. This greatly avoids the safety hazards that exist when using new batteries, especially old and retired power batteries, for energy storage or electric vehicles. The independent management of each battery ensures that during charging, the first fully charged battery is de-charged first, and during discharging, the first fully discharged battery is de-charged first, effectively addressing the bottleneck effect.

[0038] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.

Claims

1. A charging and discharging system based on the Internet of Things, characterized in that, The system includes a switch (1), which is connected to a regional management unit (2), an anti-backflow metering management unit (3), and several charging and discharging management units (4). The switch (1) is connected to a main data server (5) and a network server (6) via the Internet.

2. The charging and discharging system based on the Internet of Things according to claim 1, characterized in that, The regional management unit (2) is an industrial control computer.

3. The charging and discharging system based on the Internet of Things according to claim 1, characterized in that, The backflow prevention metering management unit (3) includes a backflow prevention module (3a) connected to the switch (1), and a metering meter (3b) and a control meter (3c) connected to the backflow prevention module (3a).

4. The charging and discharging system based on the Internet of Things according to claim 3, characterized in that, The anti-backflow module (3a) is an industrial control computer.

5. The charging and discharging system based on the Internet of Things according to claim 1, characterized in that, The charging and discharging management unit (4) includes a charging and discharging management node (7) connected to the switch (1) and several charging and discharging modules (8) connected to the charging and discharging management node (7).

6. The charging and discharging system based on the Internet of Things according to claim 5, characterized in that, The charging and discharging management node (7) is an industrial control computer.

7. The charging and discharging system based on the Internet of Things according to claim 5, characterized in that, The charging and discharging module (8) includes several rechargeable batteries (8a) connected in series in sequence. Each rechargeable battery (8a) is connected to a battery control board (8b), which is located on the side of the corresponding rechargeable battery (8a). The positive and negative terminals of the battery pack, which consists of rechargeable batteries (8a), are connected to the inverter module (8c), and each battery control board (8b) and inverter module (8c) are connected to the charge and discharge management node (7).

8. The charging and discharging system based on the Internet of Things according to claim 1, characterized in that, The network server (6) has a built-in data storage unit.

9. A charging and discharging system based on the Internet of Things according to claim 1, characterized in that, The network server (6) is connected to the external network user (9).

10. A charging and discharging system based on the Internet of Things according to claim 7, characterized in that, The battery control board (8b) is connected to the main circuits of the corresponding rechargeable batteries (8a) at both the positive and negative ends via two voltage sampling lines. An automatic switch element (8d) is provided on the main circuit on one side of each rechargeable battery (8a), and the automatic switch element (8d) is connected to the battery control board (8b) via a switch control circuit. A bypass line (8e) that bypasses the corresponding rechargeable battery (8a) is connected between the automatic switch element (8d) and the main circuit.

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