Optical storage and charging integrated battery detection device

Abstract

The utility model discloses a light storage and charging integrated battery detection device, which comprises an alternating current bus, the alternating current bus is respectively and electrically connected with a photovoltaic assembly, an energy storage battery and a load, the energy storage battery receives electric energy of the photovoltaic assembly through the alternating current bus to perform energy storage operation, and the load comprises a charging station; the energy storage battery comprises a lithium iron phosphate battery pack, the lithium iron phosphate battery pack is provided with a battery screening and sorting center, and the battery screening and sorting center comprises rapid screening and fine screening. The energy storage battery, especially the lithium iron phosphate battery pack, not only is responsible for storing electric energy generated by the photovoltaic module, but also is finely managed through the battery screening and sorting center. In the rapid screening stage, the system carries out preliminary performance evaluation on the batteries, and the batteries with poor performance or potential safety hazards are screened out. After entering the fine screening stage, the system can carry out more detailed performance test and data analysis on the remaining batteries so as to ensure that each battery reaches the use standard.

Description

Technical Field

[0001] This utility model belongs to the field of battery testing technology, and in particular relates to a photovoltaic, energy storage and charging integrated battery testing device. Background Technology

[0002] Unlike traditional vehicles, the cost of power battery equipment in new energy vehicles can account for 40%-60% of the total vehicle cost. The performance, capacity, and safety of the power battery are key concerns for consumers. Therefore, the testing, maintenance, repair, and restoration of the power battery are crucial aspects of new energy vehicle maintenance.

[0003] However, existing technologies have some limitations: with the rapid rise of the new energy vehicle market, the performance, capacity, and safety of power batteries, as their core components, have attracted close attention from consumers. Therefore, efficient and accurate testing of power batteries has become a key issue in the maintenance of new energy vehicles. Consequently, we propose an integrated photovoltaic, energy storage, and charging battery testing device. Summary of the Invention

[0004] To address the problems existing in current technologies, this utility model provides an integrated photovoltaic, energy storage, and charging battery testing device. This addresses the issue that with the rapid rise of the new energy vehicle market, the performance, capacity, and safety of power batteries, as core components, have received close attention from consumers. Therefore, efficient and accurate testing of power batteries has become a key issue in the maintenance of new energy vehicles.

[0005] This invention is implemented as follows: an integrated photovoltaic, energy storage, and charging battery testing device includes an AC bus, which is electrically connected to a photovoltaic module, an energy storage battery, and a load. The energy storage battery receives electrical energy from the photovoltaic module through the AC bus for energy storage. The load includes a charging station, which receives electrical energy from the energy storage battery or the photovoltaic module for discharging and charging. The energy storage battery includes a lithium iron phosphate battery pack, which is equipped with a battery screening and sorting center, including rapid screening and fine screening.

[0006] As a preferred embodiment of this invention, the rapid screening includes charge-discharge testing and infrared thermal imaging testing.

[0007] As a preferred embodiment of this invention, the rapid screening also includes big data analysis and visual network models.

[0008] As a preferred embodiment of this invention, the fine screening includes battery disassembly, health evaluation, capacity sorting, and battery repair.

[0009] In a preferred embodiment of this invention, the energy storage battery is provided with an energy storage system, and a photovoltaic inverter is also provided between the photovoltaic module and the AC bus. The photovoltaic inverter is electrically connected to both the photovoltaic module and the AC bus. An energy storage converter is provided between the energy storage battery and the AC bus, and an energy management system is electrically connected to the AC bus.

[0010] In a preferred embodiment of this invention, the energy storage converter receives the electrical energy inverted by the photovoltaic module and performs a conversion operation; the energy storage battery receives the electrical energy converted by the energy storage converter; the AC bus is electrically connected to a transformer; the transformer is electrically connected to the power grid; the energy storage converter receives the electrical energy from the energy storage battery and performs a conversion operation; and the load receives the electrical energy converted by the energy storage converter and performs a discharge operation.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention relates to an energy storage battery, particularly a lithium iron phosphate battery pack, which not only stores the electrical energy generated by photovoltaic modules but also manages the batteries meticulously through a battery screening and sorting center. This center comprises two stages: rapid screening and refined screening. In the rapid screening stage, the system performs a preliminary performance evaluation, identifying batteries with poor performance or potential safety hazards. In the refined screening stage, the system conducts more detailed performance tests and data analysis on the remaining batteries to ensure that each battery meets usage standards. When a charging station needs to provide charging services for new energy vehicles, it can directly obtain electrical energy from the energy storage battery or photovoltaic modules. During the charging process, the device performs real-time monitoring of the power battery, including multiple indicators such as voltage, current, and temperature, to ensure the safety and efficiency of the charging process. Simultaneously, the monitoring data is transmitted in real-time to the battery monitoring system for subsequent analysis and processing by staff. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall process provided in this embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the photovoltaic module process provided in an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the battery screening and sorting center process provided in this embodiment of the utility model.

[0016] In the diagram: 1. Energy Management System; 2. Photovoltaic Module; 3. Energy Storage Battery; 4. Load; 5. AC Bus; 6. Energy Storage System; 7. Photovoltaic Inverter; 8. Energy Storage Converter; 9. Transformer;

[0017] 301. Lithium iron phosphate battery pack; 302. Battery screening and sorting center. Detailed Implementation

[0018] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0019] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1 to 3 As shown in the figure, an integrated photovoltaic-storage-charging battery testing device provided by this utility model includes an AC bus 5, which is electrically connected to a photovoltaic module 2, an energy storage battery 3, and a load 4. The energy storage battery 3 receives electrical energy from the photovoltaic module 2 through the AC bus 5 for energy storage. The load 4 includes a charging station, which receives electrical energy from the energy storage battery 3 or the photovoltaic module 2 for discharging and charging. The energy storage battery 3 includes a lithium iron phosphate battery pack 301, which is equipped with a battery screening and sorting center 302, which includes rapid screening and fine screening.

[0021] The aforementioned photovoltaic-storage-charging integrated battery testing device uses photovoltaic module 2 as the energy source for the entire system, converting solar energy into DC power. This power can be directly supplied to the charging station or stored in the energy storage system 6 for future use. In this process, the AC bus 5 plays a crucial role in power transmission and distribution, ensuring unimpeded power flow between the photovoltaic module 2, the energy storage battery 3, and the charging station. The energy storage battery 3, particularly the lithium iron phosphate battery pack 301, not only stores the power generated by the photovoltaic module 2 but also performs fine-grained management of the batteries through a battery screening and sorting center 302. This center includes two stages: rapid screening and fine screening. In the rapid screening stage, the system conducts a preliminary performance evaluation of the batteries, identifying those with poor performance or potential safety hazards. In the fine screening stage, the system performs more detailed performance tests and data analysis on the remaining batteries to ensure that each battery meets the usage standards. When the charging station needs to provide charging services for new energy vehicles, it can directly obtain power from the energy storage battery 3 or the photovoltaic module 2. During charging, the device performs real-time monitoring of the power battery, including multiple indicators such as voltage, current, and temperature, to ensure the safety and efficiency of the charging process. Simultaneously, the monitoring data is transmitted in real-time to the battery monitoring system for subsequent analysis and processing by staff.

[0022] In this embodiment, the rapid screening includes charge-discharge testing and infrared thermal imaging testing. The rapid screening also includes big data analysis and visual network models. The refined screening includes battery disassembly, health assessment, capacity sorting, and battery repair.

[0023] In the workflow of the integrated photovoltaic-storage-charging battery testing device, battery screening and fine screening are crucial steps to ensure battery performance and safety. These two stages not only utilize advanced testing technologies but also combine big data analysis and neural network models to achieve more precise and efficient battery management. In the rapid screening stage, the recovered battery packs first undergo charge-discharge testing. During this process, the charge-discharge equipment accurately measures key information such as current, voltage, resistance, capacity, and impedance of the battery pack and individual cells during cycling. This information is crucial for evaluating battery performance and helps quickly identify batteries with poor performance or potential risks. Simultaneously, an infrared thermal imager illuminates the entire battery pack, measuring the temperature within the area to obtain information on the heat generation of the battery pack and individual cells during cycling. This thermal characteristic analysis can reveal potential anomalies within the battery, such as overheating or abnormally high localized temperatures, which are important indicators of potential battery safety hazards.

[0024] Beyond traditional testing methods, rapid screening incorporates big data analysis and neural network models. By identifying and comparing the characteristic variation patterns of a large number of battery parameters, we can more accurately assess battery performance and status. Neural network models, through machine learning technology, make the evaluation results more precise and reliable. The application of these advanced technologies significantly improves the efficiency and accuracy of rapid screening. Building upon rapid screening, the refined screening mode further disassembles and analyzes the batteries in depth. Individual cell health evaluation is a crucial step; by testing the existing capacity of the battery, we can understand its remaining lifespan and performance potential. Capacity sorting groups batteries based on their capacity or internal resistance, ensuring that batteries within the same group have similar performance. For batteries with poor performance, refined screening also includes a battery repair process. Through physical repair techniques such as pulse current charging and discharging, we can attempt to restore some of the battery's performance and extend its lifespan. These repaired batteries, after being regrouped, can be integrated into a photovoltaic-energy storage-charging integrated system for continued use. During later use, the photovoltaic-energy storage-charging integrated system will also perform a series of technical adjustments and monitoring on the secondary battery packs. This includes technologies such as grid power regulation, power ratio allocation for the energy storage system, and segmented control to ensure that the battery pack operates under optimal conditions. Simultaneously, the system monitors and balances battery inconsistencies to prevent performance degradation or safety hazards caused by individual differences.

[0025] Through this series of screening, repair, and adjustment measures, the integrated photovoltaic, energy storage, and charging battery testing device can achieve efficient and accurate testing and maintenance of power batteries.

[0026] In this embodiment, the energy storage battery 3 is equipped with an energy storage system 6, and a photovoltaic inverter 7 is also provided between the photovoltaic module 2 and the AC bus 5. The photovoltaic inverter 7 is electrically connected to both the photovoltaic module 2 and the AC bus 5. An energy storage converter 8 is provided between the energy storage battery 3 and the AC bus 5, and the AC bus 5 is electrically connected to an energy management system 1. The energy storage converter 8 receives the inverted electrical energy from the photovoltaic module 2 and performs a conversion operation. The energy storage battery 3 receives the converted electrical energy from the energy storage converter 8. The AC bus 5 is electrically connected to a transformer 9, and the transformer 9 is electrically connected to the power grid. The energy storage converter 8 receives the electrical energy from the energy storage battery 3 and performs a conversion operation. The load 4 receives the converted electrical energy from the energy storage converter 8 and performs a discharge operation.

[0027] Photovoltaic modules 2 generate direct current (DC) power by absorbing solar energy. These photovoltaic panels do not work individually but in multiple coordinated operations, with current concentrated and efficiently transmitted through a DC combiner box 202. Subsequently, photovoltaic inverter 7 converts the DC power into alternating current (AC), allowing it to smoothly enter AC bus 5. AC bus 5 is connected not only to photovoltaic inverter 7 but also to energy storage converter 8, energy management system 1, and transformer 9, forming the core network for power transmission. Energy storage converter 8 plays a crucial role in charging and discharging, ensuring that the power supply meets the needs of energy storage battery 3. Energy management system 1 monitors and intelligently schedules power distribution in real time, ensuring efficient and stable system operation. Transformer 9 is responsible for converting the voltage of the power supply to adapt to grid connection. Finally, when the charging station needs power, energy storage converter 8 releases the power from energy storage battery 3 to AC bus 5, and load device 4 receives the power through the interface for discharge operation.

[0028] The working principle of this utility model:

[0029] The photovoltaic modules, serving as the energy source for the entire system, convert solar energy into direct current (DC) electricity. This electricity can be directly supplied to the charging station or stored in the energy storage system 6 for unforeseen needs. In this process, the AC bus 5 plays a crucial role in power transmission and distribution, ensuring unimpeded power flow between the photovoltaic modules 2, the energy storage battery 3, and the charging station. The energy storage battery 3, particularly the lithium iron phosphate battery pack 301, not only stores the electricity generated by the photovoltaic modules 2 but also performs refined management of the batteries through the battery screening and sorting center 302. This center includes two stages: rapid screening and refined screening. In the rapid screening stage, the system conducts a preliminary performance evaluation of the batteries, identifying those with poor performance or potential safety hazards. In the refined screening stage, the system conducts more detailed performance tests and data analysis on the remaining batteries to ensure that each battery meets the usage standards. When the charging station needs to provide charging services for new energy vehicles, it can directly obtain electricity from the energy storage battery 3 or the photovoltaic modules 2. During charging, the device performs real-time monitoring of the power battery, including multiple indicators such as voltage, current, and temperature, to ensure the safety and efficiency of the charging process. Simultaneously, the monitoring data is transmitted in real-time to the battery monitoring system for subsequent analysis and processing by staff.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic-storage-charging integrated battery testing device, comprising an AC bus (5), characterized in that: The AC bus (5) is electrically connected to the photovoltaic module (2), the energy storage battery (3) and the load (4) respectively. The energy storage battery (3) receives the electrical energy of the photovoltaic module (2) through the AC bus (5) for energy storage operation. The load (4) includes a charging station. The charging station receives the electrical energy of the energy storage battery (3) or the photovoltaic module (2) for discharge and charging operation. The energy storage battery (3) includes a lithium iron phosphate battery pack (301). The lithium iron phosphate battery pack (301) is equipped with a battery screening and sorting center (302). The battery screening and sorting center (302) includes rapid screening and fine screening.

2. The photovoltaic-storage-charging integrated battery testing device as described in claim 1, characterized in that: The rapid screening includes charge-discharge testing and infrared thermal imaging testing.

3. The photovoltaic-storage-charging integrated battery testing device as described in claim 1, characterized in that: The rapid screening also includes big data analytics and visual network models.

4. The photovoltaic-storage-charging integrated battery testing device as described in claim 1, characterized in that: The fine screening includes battery disassembly, health assessment, capacity sorting, and battery repair.

5. The photovoltaic-storage-charging integrated battery testing device as described in claim 1, characterized in that: The energy storage battery (3) is equipped with an energy storage system (6), and a photovoltaic inverter (7) is also provided between the photovoltaic module (2) and the AC bus (5). The photovoltaic inverter (7) is electrically connected to the photovoltaic module (2) and the AC bus (5) respectively. An energy storage converter (8) is provided between the energy storage battery (3) and the AC bus (5). An energy management system (1) is electrically connected to the AC bus (5).

6. The photovoltaic-storage-charging integrated battery testing device as described in claim 5, characterized in that: The energy storage converter (8) receives the power after the photovoltaic module (2) is inverted and performs a power conversion operation. The energy storage battery (3) receives the power after the energy storage converter (8) is converted. The AC bus (5) is electrically connected to the transformer (9). The transformer (9) is electrically connected to the power grid. The energy storage converter (8) receives the power after the energy storage battery (3) is converted and performs a power conversion operation. The load (4) receives the power after the energy storage converter (8) is converted and performs a discharge operation.

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