Novel energy storage battery cabin battery cell consistency system based on battery cell voltage data

Abstract

The utility model provides a novel energy storage battery cabin cell consistency system based on cell voltage data, which comprises a local equipment module, a data acquisition module, a network communication module and an upper computer which are connected in sequence, the upper computer is connected with a display module and an AFE circuit, and the local equipment module is a battery cabin; the data acquisition module is used for acquiring voltage data of a battery cell in the battery cabin and transmitting the voltage data to the upper computer through the network communication module; the upper computer is connected with the display module and the AFE circuit; the display module is used for displaying voltage data of battery cells, battery packs, battery clusters and battery cabin levels; and the AFE circuit is connected with a battery cell in the battery cabin. According to the utility model, the voltage data of each level is collected and uploaded, so that the consistency management of the battery cells with different granularities is realized, the overall performance of the battery compartment is effectively improved, the service life of the battery compartment is effectively prolonged, and the technical guarantee is provided for the safe and stable operation of a large-scale energy storage system.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the novel energy storage power station management system field, and specifically relates to a novel energy storage battery cabin electric core consistency display and control system based on electric core voltage data. BACKGROUND

[0002] Lithium battery energy storage system is outstanding among many energy storage technologies due to its high energy density advantage. At present, the energy density of commercial lithium ion battery has reached about 260Wh / kg in general, which is significantly improved compared with traditional lead-acid battery or nickel-hydrogen battery. This enables it to store more electrical energy in unit volume, greatly improves the space utilization rate of energy storage equipment, and is especially suitable for large-scale deployment and application. In addition, the low self-discharge rate of lithium battery also means longer standby time and higher cycle efficiency, which significantly reduces unnecessary energy loss and is beneficial to improve the overall performance of the entire energy storage system. Under normal circumstances, the monthly self-discharge rate of high-quality lithium battery at room temperature can be controlled within 2%. As for the service life, the cycle life of top lithium battery products can reach more than 5000 times, far exceeding other types of batteries. Even after thousands of charge and discharge cycles, it can still maintain a certain degree of capacity and efficiency, thereby showing excellent economy and environmental protection in the whole life cycle.

[0003] However, although the lithium battery energy storage system has many advantages, when it is applied to large-scale energy storage projects, the consistency problem is particularly prominent. The inconsistency of the electric core in the battery cabin will cause the available capacity of the entire energy storage system to decrease, and the overall performance of the battery module depends on the smallest single battery. Due to factors such as small differences in the manufacturing process, temperature changes in the working environment, different aging speeds during use, etc., each electric core inside the battery cabin will show different degrees of inconsistency in capacity, voltage, internal resistance, etc. The cumulative effect of this inconsistency will seriously affect the safety and stability of the entire energy storage system and the service life. Not only can it cause some electric cores to reach their service life limit prematurely, reduce the available capacity of the entire battery pack, limit the effective use of the maximum capacity of the energy storage system, but also increase the potential safety risk.

[0004] Therefore, it is urgent to find and identify the inconsistency of electric cores, battery packs, battery clusters and other different levels of electric cores in the battery compartment. Utility model content

[0005] The utility model aims at the problem of how to identify and control the inconsistent state of different levels of electric cores in the battery compartment, and proposes a novel energy storage battery cabin electric core consistency system based on electric core voltage data.

[0006] The technical scheme of the utility model is:

[0007] This utility model provides a novel energy storage battery compartment cell consistency system based on cell voltage data, comprising a local device module, a data acquisition module, a network communication module, and a host computer connected in sequence, wherein the host computer is connected to a display module and an AFE circuit;

[0008] The local device module is a battery compartment; the battery compartment contains multiple battery clusters, each battery cluster contains multiple battery packs, and each battery pack contains multiple battery cells;

[0009] The data acquisition module is used to collect voltage data of the cells in the battery compartment. By collecting and uploading voltage data at the cell, battery pack, battery cluster and battery compartment levels, consistent cell management at different granularities can be achieved.

[0010] The network communication module is used to transmit the voltage data to the host computer;

[0011] The host computer is connected to the display module and the AFE circuit. The display module is used to display the voltage data of the cells, battery packs, battery clusters and battery compartments. The AFE circuit is connected to the cells in the battery compartment and is used to receive the user's control signals to balance the voltage of the cells in the battery compartment, so that the cells in the battery compartment are kept consistent.

[0012] Furthermore, the data acquisition module includes a voltage sensor, which is used to acquire voltage data of the cells, battery packs, battery clusters and corresponding levels of the battery compartment in real time.

[0013] Furthermore, the voltage sensor is model MPX5010.

[0014] Furthermore, the network communication module adopts the IEC60870-5-104 communication protocol to transmit the voltage data to the host computer in real time.

[0015] The beneficial effects of this utility model are:

[0016] This invention provides a novel energy storage battery compartment cell consistency control system based on cell voltage data. It effectively addresses the inconsistency issues between different levels of cells within the battery compartment, provides a visual display, and allows users to control the cells at different levels, ensuring the safe and stable operation of the new energy storage power station.

[0017] This invention collects voltage data of each cell in the battery compartment using a voltage sensor, transmits the data to a host computer via the IEC60870-5-104 communication protocol, and displays it to the user. It also utilizes an AFE circuit to balance and control the voltage of the cells in the battery compartment, thereby improving cell consistency.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1 A schematic diagram of the novel energy storage battery compartment cell consistency system based on cell voltage data is shown.

[0021] Figure 2 A structural diagram of a battery compartment in an application scenario according to an embodiment of the present invention is shown. Detailed Implementation

[0022] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0023] like Figure 1 , 2 As shown, this utility model provides a novel energy storage battery compartment cell consistency system based on cell voltage data, including a local device module, a data acquisition module, a network communication module, and a host computer connected in sequence. The host computer is connected to a display module and an AFE circuit.

[0024] The local device module is a battery compartment; the battery compartment contains multiple battery clusters, each battery cluster contains multiple battery packs, and each battery pack contains multiple battery cells;

[0025] The data acquisition module is used to collect voltage data of the cells in the battery compartment. By collecting and uploading voltage data at the cell, battery pack, battery cluster and battery compartment levels, consistent cell management at different granularities can be achieved.

[0026] The network communication module is used to transmit the voltage data to the host computer;

[0027] The host computer is connected to the display module and the AFE circuit. The display module is used to display the voltage data of the cells, battery packs, battery clusters and battery compartments. The AFE circuit is connected to the cells in the battery compartment and is used to receive the user's control signals to balance the voltage of the cells in the battery compartment, so that the cells in the battery compartment are kept consistent.

[0028] In one example, the data acquisition module includes a voltage sensor, which is used to acquire voltage data of the cells, battery packs, battery clusters and corresponding levels of the battery compartment in real time; the voltage sensor is model MPX5010.

[0029] In one example, the network communication module uses the IEC60870-5-104 communication protocol to transmit the voltage data to the host computer in real time.

[0030] This invention enables real-time monitoring and control of the consistency of battery cells in the energy storage battery compartment, effectively improving the overall performance and service life of the battery compartment and providing technical support for the safe and stable operation of large-scale energy storage systems.

[0031] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A novel energy storage battery pack cell consistency system based on cell voltage data, characterized by, Comprise local device module, data acquisition module, network communication module and host computer connected in turn, the host computer connects display module and AFE circuit; The local device module is a battery cabin; The battery cabin is provided with a plurality of battery clusters, each battery cluster is provided with a plurality of battery packs, and each battery pack is provided with a plurality of battery cells; The data acquisition module is used for collecting voltage data of the battery cells in the battery cabin, and the voltage data of the battery cells, battery packs, battery clusters and battery cabin levels are collected and uploaded to realize consistency management of battery cells with different granularity; The network communication module is used for transmitting the voltage data to the host computer; The host computer is connected with the display module and the AFE circuit, the display module is used for displaying the voltage data of the battery cells, battery packs, battery clusters and battery cabin levels, and the AFE circuit is connected with the battery cells in the battery cabin and is used for receiving control signals of the user to balance control the voltage of the battery cells in the battery cabin so that the battery cells in the battery cabin keep consistent.

2. A novel energy storage battery cell consistency system based on cell voltage data according to claim 1, characterized in that, The data acquisition module comprises a voltage sensor, and the voltage sensor is used for collecting voltage data of the battery cells, battery packs, battery clusters and corresponding levels of the battery cabin in real time.

3. A novel energy storage battery pack cell uniformity system based on cell voltage data according to claim 2, characterized in that, The model of the voltage sensor is MPX5010.

4. The new type of energy storage battery cell consistency system based on cell voltage data according to claim 1, characterized in that, The network communication module adopts IEC60870-5-104 communication protocol to transmit the voltage data to the host computer in real time.

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