Balancing processing method between battery packs

Abstract

The invention belongs to the technical field of energy storage management and control, and particularly relates to a battery pack equalization processing method, which comprises the following steps: selecting N battery packs (N is at least 2), independently calculating the SOC of each battery pack, respectively displaying the SOC of each battery pack on a display device, and performing data storage through a self-adaptive operation management and control device. According to the method, the SOC of a single battery pack can be accurately approved, so that the equalization effect of a plurality of battery packs is better, and a user can more clearly know the equalization processing process of each battery pack.

Description

Technical Field

[0001] This invention belongs to the technical field of energy storage management and control, specifically relating to a method for equalization processing among battery packs. Background Technology

[0002] The state of charge (SOC) of a battery pack is a key indicator for measuring its remaining capacity. It refers to the percentage of the current remaining charge of the battery pack compared to its rated charge when fully charged. Alternatively, it can refer to the percentage of the actual charge present in the energy storage medium relative to the rated energy storage capacity. It helps the battery management system (BMS) determine the remaining energy of the battery, thereby controlling battery usage and the charging / discharging process, and extending battery life. However, current technologies can only obtain the total SOC of multiple battery packs, not the precise SOC of a single battery pack, thus failing to accurately and reliably balance the charge of each individual battery pack. Summary of the Invention

[0003] The purpose of this invention is to provide a method for equalization processing between battery packs, which significantly improves the equalization accuracy between battery packs, addressing the shortcomings of existing technologies.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A method for equalization processing between battery packs includes the following steps: Step 1: Select N battery packs, where N is at least 2. Calculate the SOC of each battery pack independently, display the SOC of each battery pack on the display device, and store the data through the adaptive computing control device. Step 2: Calculate the average SOC of N battery packs, display the average SOC of N battery packs on the display device, calculate the total voltage of each battery pack independently, and calculate, display and record the voltage difference between each battery pack. Step 3: Equalize each battery pack based on average SOC and inter-pack voltage difference.

[0005] As an improvement to the equalization processing method among battery packs of the present invention, step one further includes: collecting the voltage values ​​of each individual battery cell in a single battery pack and storing the data through an adaptive computing and control device. A single battery pack may contain 6-10, 11-14, or 15-18 individual battery cells.

[0006] As an improvement to the equalization processing method between battery packs of the present invention, step two further includes: displaying the average SOC of N battery packs at the center of the display device, displaying the SOC of each battery pack on the left side of the display device, and displaying the total voltage of each battery pack and the voltage difference between each battery pack on the right side of the display device.

[0007] As an improvement to the battery pack equalization processing method of the present invention, step one further includes: connecting the BMS battery management module to each battery pack to monitor the voltage value of each individual cell in each battery pack in real time. The BMS battery management module determines the full charge status of the entire battery pack by detecting how many individual cells in the battery pack have reached their full voltage value.

[0008] As an improvement to the equalization processing method among battery packs of the present invention, step two further includes: when a single battery pack reaches full charge, the voltage of each individual battery cell in the single battery pack is controlled collaboratively by the voltage acquisition module and the power supply protection module.

[0009] As an improvement to the equalization processing method among battery packs of the present invention, step three further includes: identifying and controlling errors by constructing and training an actuarial model.

[0010] As an improvement to the equalization processing method among battery packs of the present invention, step three further includes: calculating and statistically analyzing the obtained data to form an equalization information report.

[0011] As an improvement to the equalization processing method between battery packs of the present invention, step three further includes: controlling the maximum equalization current to 10A and controlling the minimum equalization current to 5A.

[0012] The beneficial effects of this invention are as follows: This invention independently calculates the SOC (State of Charge) of each battery pack and displays it on the upper-level display screen, while simultaneously calculating the average SOC. This operation allows for a more accurate and clear understanding of which battery packs are fully charged or depleted, and which battery packs are not fully charged or fully discharged, thereby significantly reducing the occurrence of errors. It also enables users to more accurately and quickly understand the overall energy storage level through the average SOC on the main interface, and allows the data displayed for individual battery packs to provide direct evidence for troubleshooting anomalies, reducing the risk of hidden faults. Attached Figure Description

[0013] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following description is provided in conjunction with the appendix. Figure 1 The following is a detailed description of the specific implementation methods, structures, features, and effects of the present invention, as well as preferred embodiments.

[0015] A method for equalization processing between battery packs, such as Figure 1 As shown, it includes the following steps: Step 1: Select N battery packs, where N is at least 2. Calculate the SOC of each battery pack independently, display the SOC of each battery pack on the display device, and store the data through the adaptive computing control device. Step 2: Calculate the average SOC of N battery packs, display the average SOC of N battery packs on the display device, calculate the total voltage of each battery pack independently, and calculate, display and record the voltage difference between each battery pack. Step 3: Equalize each battery pack based on average SOC and inter-pack voltage difference.

[0016] The display screen of the display device can range from 27 square centimeters to 1296 square centimeters. The adaptive computing control device stores data through its built-in computing software. The computing power of the adaptive computing control device is achieved by multiple precision computing chips working together.

[0017] Preferably, step one further includes: collecting the voltage values ​​of each battery cell in a single battery pack and storing the data through an adaptive computing and control device. A single battery pack may contain 6-10, 11-14, or 15-18 battery cells. The voltage values ​​of each battery cell are collected by a voltage acquisition circuit.

[0018] Preferably, step two further includes: displaying the average SOC of N battery packs at the center of the display device, displaying the SOC of each battery pack on the left side of the display device, and displaying the total voltage of each battery pack and the voltage difference between each battery pack on the right side of the display device. Through this dual-level SOC display, the display device shows both the single-pack capacity and the average SOC, achieving visualized monitoring and effectively improving the operational safety of the battery packs.

[0019] Preferably, step one further includes: connecting the BMS battery management module to each battery pack to monitor the voltage value of each individual battery cell in each battery pack in real time. The BMS battery management module determines the full charge status of the entire battery pack by detecting how many individual cells in the battery pack have reached their full voltage value. N can also be an integer such as 3, 4, or 5.

[0020] Preferably, step two further includes: when a single battery pack reaches full charge, the voltage of each individual battery cell in the single battery pack is collaboratively controlled by the voltage acquisition module and the power supply protection module. Specifically, the voltage acquisition module and the power supply protection module are electrically connected to the MCU control module, and each individual battery cell is electrically connected to both the voltage acquisition module and the power supply protection module, thereby effectively achieving collaborative control of the voltage of each individual battery cell.

[0021] Preferably, step three further includes: identifying and controlling errors by constructing and training an actuarial model. This actuarial model contains multiple computational models, which refine the computational process, enabling the adaptive computational control device to identify potential data errors during computation and then correct the data to avoid excessive errors.

[0022] Preferably, step three further includes: calculating and statistically analyzing the obtained data to generate a balance information report. This balance information report can be generated using information analysis and integration software built into the adaptive computing control device.

[0023] Preferably, step three also includes: controlling the maximum balancing current to 10A and controlling the minimum balancing current to 5A.

[0024] When there is a large difference between voltage and charge, it is very difficult to determine whether a battery pack is fully charged or fully discharged. This solution cleverly calculates the average value, which can better reflect the overall charge of the battery pack and reduce the occurrence of errors.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for equalization processing between battery packs, characterized in that, Includes the following steps: Step 1: Select N battery packs, where N is at least 2. Calculate the SOC of each battery pack independently, display the SOC of each battery pack on the display device, and store the data through the adaptive computing control device. Step 2: Calculate the average SOC of N battery packs, display the average SOC of N battery packs on the display device, calculate the total voltage of each battery pack independently, and calculate, display and record the voltage difference between each battery pack. Step 3: Equalize each battery pack based on average SOC and inter-pack voltage difference.

2. The equalization processing method among battery packs as described in claim 1, characterized in that, Step one also includes: collecting the voltage values ​​of each individual battery cell in a single battery pack and storing the data through an adaptive computing and control device.

3. The equalization processing method among battery packs as described in claim 1, characterized in that, Step one also includes: connecting the BMS battery management module to each battery pack to monitor the voltage value of each individual battery cell in each battery pack in real time.

4. The battery pack equalization processing method according to any one of claims 1 to 3, characterized in that, Step two further includes: when a single battery pack reaches full charge, the voltage of each individual battery cell in the single battery pack is controlled collaboratively by the voltage acquisition module and the power supply protection module.

5. The battery pack equalization processing method according to any one of claims 1 to 3, characterized in that, Step three also includes: identifying and controlling errors by building and training actuarial models.

6. The battery pack equalization processing method according to any one of claims 1 to 3, characterized in that, Step three also includes: calculating and statistically analyzing the obtained data to generate a balanced information report.

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