Energy storage test device of carbon-based capacitor

Abstract

The utility model relates to an energy storage test device of a carbon-based capacitor, which comprises a first carbon-based capacitor battery pack, a second carbon-based capacitor battery pack, a first direct-current ammeter, a second direct-current ammeter, a first energy storage converter, a second energy storage converter, an isolation transformer and control equipment, the first carbon-based capacitor battery pack, the first direct current meter and the first energy storage converter are connected in sequence, the second carbon-based capacitor battery pack, the second direct current meter and the second energy storage converter are connected in sequence, and the first energy storage converter and the second energy storage converter are connected with each other through the isolation transformer. The control device is connected with the first carbon-based capacitor battery pack, the second carbon-based capacitor battery pack, the first direct-current ammeter, the second direct-current ammeter, the first energy storage converter and the second energy storage converter. Compared with the prior art, the device has the advantages of simple structure, convenience in construction, convenience in test, safety, reliability and the like.

Description

Technical Field

[0001] The utility model relates to the field of carbon-based capacitor test equipment, in particular to an energy storage test device for carbon-based capacitors. Background Technique

[0002] With the rapid development of the new energy field, increasingly stringent performance requirements are put forward for energy storage devices. High-performance energy storage devices have gradually become the technical bottleneck in the conversion and utilization of new energy. All are seeking new energy storage devices with high power density and high energy density, and solving problems such as large pollution, short lifespan, poor environmental adaptability, and high safety hazards of traditional energy storage devices.

[0003] As a new battery technology between supercapacitors and lithium batteries, carbon-based capacitors have a series of unique advantages such as long cycle life, good safety, high reliability, fast charging speed, good high and low temperature resistance, maintenance-free, green and environmentally friendly, and the lowest full-life cycle cost. They can be widely used in the transportation field, such as the auxiliary power systems of mining trucks and buses. In the energy storage field, such as large-scale photovoltaic conversion, energy storage systems for wind power generation, smart grids, power plant frequency modulation and peak shaving systems, microgrid energy storage battery systems and other scenarios.

[0004] At present, in the transportation field, carbon-based capacitor technology has been fully developed and applied. However, in the energy storage field, especially the application cases and tests of energy storage systems based on carbon-based capacitors participating in power grid frequency modulation are still rare, and the actual effects of this system in this application scenario cannot be accurately quantified.

[0005] Therefore, there is an urgent need for an energy storage test platform based on carbon-based capacitors to simulate and verify the actual effects of this technology in the energy storage field. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the defects of the above-mentioned existing technologies and provide an energy storage test device for carbon-based capacitors with a simple structure, convenient construction and operation, so as to realize the energy storage test of carbon-based capacitors.

[0007] The purpose of the utility model can be achieved by the following technical solutions:

[0008] An energy storage test device for a carbon-based capacitor, comprising a first carbon-based capacitor battery pack, a second carbon-based capacitor battery pack, a first DC ammeter, a second DC ammeter, a first energy storage inverter, a second energy storage inverter, an isolation transformer and a control device. The first carbon-based capacitor battery pack, the first DC ammeter and the first energy storage inverter are connected in sequence. The second carbon-based capacitor battery pack, the second DC ammeter and the second energy storage inverter are connected in sequence. The first energy storage inverter and the second energy storage inverter are connected to each other through the isolation transformer. The control device is respectively connected to the first carbon-based capacitor battery pack, the second carbon-based capacitor battery pack, the first DC ammeter, the second DC ammeter, the first energy storage inverter and the second energy storage inverter.

[0009] Further, the control device includes a microgrid coordination control device, a router, a cloud monitoring platform, a terminal block and a switch. The first carbon-based capacitor battery pack, the second carbon-based capacitor battery pack, the first DC ammeter and the second DC ammeter are all communicatively connected to the microgrid coordination control device. The first energy storage inverter and the second energy storage inverter are both communicatively connected to the switch, and the switch is connected to the microgrid coordination control device. The microgrid coordination control device is connected to the cloud monitoring platform through the router.

[0010] Further, the first carbon-based capacitor battery pack, the second carbon-based capacitor battery pack, the first DC ammeter and the second DC ammeter are all provided with a first RS485 protocol and physical ports, and the first RS485 protocol and physical ports are respectively connected to the terminal block through shielded twisted pairs.

[0011] Further, the first energy storage inverter and the second energy storage inverter are both provided with a second RS485 protocol and physical ports, and the second RS485 protocol and physical ports are communicatively connected to the switch.

[0012] Further, the microgrid coordination control device is provided with a MODBUS-RTU communication interface for connecting to the terminal block and a network interface for connecting to the switch.

[0013] Further, the microgrid coordination control device is a device with data protocol conversion function.

[0014] Further, the router is a 4G router.

[0015] Further, both the first carbon-based capacitor battery pack and the second carbon-based capacitor battery pack include multiple groups of standard carbon-based capacitor modules connected in parallel through a DC high-voltage busbar cabinet.

[0016] Further, both the first carbon-based capacitor battery pack and the second carbon-based capacitor battery pack are carbon-based capacitor battery packs with the function of collecting single-cell voltage and temperature data.

[0017] Further, both the first DC ammeter and the second DC ammeter are DC ammeters with the function of measuring voltage and current information.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] (1) Two groups of carbon-based capacitor batteries are set in this scheme and are interconnected through an energy storage converter via an isolation transformer. The energy storage converter can control the bidirectional flow of energy of the carbon-based capacitor batteries, meeting the requirements of power control accuracy and the response speed of rapid charge and discharge conversion. The isolation transformer can achieve electrical circuit isolation to ensure the safety of the experiment;

[0020] When conducting the energy storage experiment of the carbon-based capacitor, the current flow direction can be controlled by the cooperation of two energy storage converters. For example, the first carbon-based capacitor battery group discharges while the second carbon-based capacitor battery group charges; or the first carbon-based capacitor battery group charges while the second carbon-based capacitor battery group discharges, realizing the energy storage experiment of the carbon-based capacitor in a "push-pull" manner without connecting to the power grid. The experimental process is more convenient, and the monitoring data information of devices such as DC ammeters is collected through the control device to monitor the operation status of all devices on the experimental platform and record the operation effect data in real time.

[0021] (2) The structure of the energy storage experiment device of this carbon-based capacitor is simple, convenient to build, and has corresponding safety protection measures, which is safe and reliable.

[0022] (3) The cloud of the energy storage experiment device of this carbon-based capacitor cooperates with the on-site equipment to monitor the operation status of all devices on the experimental platform and record the operation effect data in real time. At the same time, it supports remote control and remote setting functions, and almost no one needs to be on-site during the experiment, further reducing the experimental cost. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of an energy storage experiment device of a carbon-based capacitor provided in an embodiment of the utility model;

[0024] In the figure, 1. The first carbon-based capacitor battery group, 2. The second carbon-based capacitor battery group, 3. The first DC ammeter, 4. The second DC ammeter, 5. The first energy storage converter, 6. The second energy storage converter, 7. The isolation transformer, 8. The microgrid coordination control device, 9. The router, 10. The cloud monitoring platform, 11. The terminal block, 12. The switch. Detailed Embodiment

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more unless otherwise specifically defined.

[0029] Embodiment 1

[0030] As Figure 1 shown, this embodiment provides an energy storage test device for a carbon-based capacitor, including a first carbon-based capacitor battery pack 1, a second carbon-based capacitor battery pack 2, a first DC ammeter 3, a second DC ammeter 4, a first energy storage inverter 5, a second energy storage inverter 6, an isolation transformer 7, and a control device. The first carbon-based capacitor battery pack 1, the first DC ammeter 3, and the first energy storage inverter 5 are connected in sequence. The second carbon-based capacitor battery pack 2, the second DC ammeter 4, and the second energy storage inverter 6 are connected in sequence. The first energy storage inverter 5 and the second energy storage inverter 6 are interconnected through the isolation transformer 7. The control device is respectively connected to the first carbon-based capacitor battery pack 1, the second carbon-based capacitor battery pack 2, the first DC ammeter 3, the second DC ammeter 4, the first energy storage inverter 5, and the second energy storage inverter 6.

[0031] Optionally, both the first carbon-based capacitor battery pack 1 and the second carbon-based capacitor battery pack 2 include multiple groups of standard carbon-based capacitor modules connected in parallel through a DC high-voltage busbar cabinet.

[0032] In this embodiment, both the first carbon-based capacitor battery pack 1 and the second carbon-based capacitor battery pack 2 include 4 groups of standard carbon-based capacitor modules connected in parallel through a DC high-voltage busbar cabinet.

[0033] Both the first DC ammeter 3 and the second DC ammeter 4 are DC ammeters with the functions of measuring voltage and current information. They are connected to the circuit to measure data such as the voltage and electric energy under the operating conditions of the carbon-based capacitor.

[0034] Both the first energy storage converter 5 and the second energy storage converter 6 are energy storage converters. As the power interface device connecting the energy storage system and the power grid, the energy storage converter undertakes the function of controlling the bidirectional flow of energy between the power grid and the energy storage unit, meeting the requirements of power control accuracy and the response speed of rapid charge and discharge conversion.

[0035] In this solution, two carbon-based capacitor battery packs are set up and connected to each other through the energy storage converter via the isolation transformer 7. The energy storage converter can control the bidirectional flow of energy of the carbon-based capacitor battery pack, meeting the requirements of power control accuracy and the response speed of rapid charge and discharge conversion. The isolation transformer 7 can achieve electrical circuit isolation to ensure the safety of the experiment. When conducting the energy storage experiment of the carbon-based capacitor, the two energy storage converters can cooperate to control the direction of current flow. For example, the first carbon-based capacitor battery pack 1 discharges while the second carbon-based capacitor battery pack 2 charges; or the first carbon-based capacitor battery pack 1 charges while the second carbon-based capacitor battery pack 2 discharges, realizing the energy storage experiment of the carbon-based capacitor in a "push-pull" manner. And by controlling the device to collect the monitoring data information of devices such as DC ammeters, the operation conditions of all devices on the experimental platform can be monitored, and the operation effect data can be recorded in real time.

[0036] Preferably, the control device includes a microgrid coordination control device 8, a router 9, a cloud monitoring platform 10, a terminal block 11, and a switch 12. The first carbon-based capacitor battery pack 1, the second carbon-based capacitor battery pack 2, the first DC ammeter 3, and the second DC ammeter 4 are all communicatively connected to the microgrid coordination control device 8; both the first energy storage converter 5 and the second energy storage converter 6 are communicatively connected to the switch 12, and this switch 12 is connected to the microgrid coordination control device 8, and the microgrid coordination control device 8 is connected to the cloud monitoring platform 10 through the router 9.

[0037] Optionally, the first carbon-based capacitor battery pack 1, the second carbon-based capacitor battery pack 2, the first DC ammeter 3, and the second DC ammeter 4 are all provided with the first RS485 protocol and physical ports, and the first RS485 protocol and physical ports are respectively connected to the terminal block 11 through shielded twisted pairs.

[0038] Both the first energy storage converter 5 and the second energy storage converter 6 are provided with the second RS485 protocol and physical ports, and the second RS485 protocol and physical ports are communicatively connected to the switch 12.

[0039] The microgrid coordinated control device 8 is provided with a MODBUS-RTU communication interface for connecting to the terminal block 11 and a network interface for connecting to the switch 12.

[0040] The microgrid coordinated control device 8 is a device with data protocol conversion function.

[0041] The router 9 can be selected as a 4G router.

[0042] Both the first carbon-based capacitor battery pack 1 and the second carbon-based capacitor battery pack 2 are carbon-based capacitor battery packs with the function of collecting single-cell voltage and temperature data.

[0043] In this embodiment, the first carbon-based capacitor battery pack 1, the second carbon-based capacitor battery pack 2, the first DC ammeter 3, and the second DC ammeter 4 all have RS485 protocol and physical ports. After being respectively connected to the terminal block 11 through shielded twisted pairs and then leading out communication lines to access the MODBUS-RTU communication interface of the microgrid coordinated control device 8, the single-cell voltage and temperature data of the first carbon-based capacitor battery pack 1 and the second carbon-based capacitor battery pack 2, as well as the voltage, current, and power information of the first DC ammeter 3 and the second DC ammeter 4 can be collected in real time by the microgrid coordinated control device 8.

[0044] Both the first energy storage converter 5 and the second energy storage converter 6 have RS485 protocol and physical ports. After being connected to the switch 12 and then leading out network cables to access the network interface of the microgrid coordinated control device 8, the real-time data of the first energy storage converter 5 and the second energy storage converter 6 can be monitored and collected.

[0045] The microgrid coordinated control device 8 realizes data protocol conversion internally. After processing the data format, it is connected to the 4G router 9 through a network cable, and the data is sent to the cloud monitoring platform 10 using the 4G network, realizing real-time monitoring of the data of the entire test platform. At the same time, functions such as remotely controlling and remotely setting the start and stop of the test platform equipment can also be achieved through the cloud.

[0046] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the existing technology should fall within the protection scope determined by the claims.

Claims

1. A carbon-based capacitor energy storage test device, characterized in that: The invention comprises a first carbon-based capacitor battery group (1), a second carbon-based capacitor battery group (2), a first direct current meter (3), a second direct current meter (4), a first energy storage converter (5), a second energy storage converter (6), an isolation transformer (7) and a control device, wherein the first carbon-based capacitor battery group (1), the first direct current meter (3) and the first energy storage converter (5) are connected in sequence, the second carbon-based capacitor battery group (2), the second direct current meter (4) and the second energy storage converter (6) are connected in sequence, the first energy storage converter (5) and the second energy storage converter (6) are connected to each other via the isolation transformer (7), and the control device is respectively connected to the first carbon-based capacitor battery group (1), the second carbon-based capacitor battery group (2), the first direct current meter (3), the second direct current meter (4), the first energy storage converter (5) and the second energy storage converter (6).

2. The energy storage test device of a carbon-based capacitor according to claim 1, characterized in that: The control device comprises a microgrid coordination control device (8), a router (9), a cloud monitoring platform (10), a terminal block (11) and a switch (12); the first carbon-based capacitor battery group (1), the second carbon-based capacitor battery group (2), the first DC meter (3) and the second DC meter (4) are all communicatively connected to the microgrid coordination control device (8); the first energy storage converter (5) and the second energy storage converter (6) are all communicatively connected to the switch (12); the switch (12) is connected to the microgrid coordination control device (8); and the microgrid coordination control device (8) is connected to the cloud monitoring platform (10) via the router (9).

3. The energy storage test device of a carbon-based capacitor according to claim 2, characterized in that: The first carbon-based capacitor battery pack (1), the second carbon-based capacitor battery pack (2), the first direct current meter (3) and the second direct current meter (4) are all provided with a first RS485 protocol and a physical port, and the first RS485 protocol and the physical port are respectively connected to the terminal block (11) via a shielded twisted pair cable.

4. The energy storage test device of a carbon-based capacitor according to claim 2, characterized in that: The first energy storage converter (5) and the second energy storage converter (6) are both provided with a second RS485 protocol and a physical port, and the second RS485 protocol and the physical port are communicatively connected to the switch (12).

5. The energy storage test device of a carbon-based capacitor according to claim 2, characterized in that: The microgrid coordination control device (8) is provided with a MODBUS-RTU communication interface for connecting to a terminal block (11), and a network interface for connecting to a switch (12).

6. The energy storage test device of a carbon-based capacitor according to claim 2, characterized in that: The microgrid coordination control device (8) is a device with a data protocol conversion function.

7. The energy storage test device of a carbon-based capacitor according to claim 2, characterized in that: The router (9) is a 4G router.

8. The energy storage test device of a carbon-based capacitor according to claim 1, characterized in that: The first carbon-based capacitor battery group (1) and the second carbon-based capacitor battery group (2) both comprise a plurality of groups of standard carbon-based capacitor modules connected in parallel via a DC high-voltage combiner cabinet.

9. The energy storage test device of a carbon-based capacitor according to claim 8, characterized in that: The first carbon-based capacitor battery pack (1) and the second carbon-based capacitor battery pack (2) are both carbon-based capacitor battery packs with a single-cell voltage and temperature data acquisition function.

10. The energy storage test device of a carbon-based capacitor according to claim 1, characterized in that: The first DC meter (3) and the second DC meter (4) are both DC meters with voltage and current information metering functions.

Images