Series Formation System for Battery Manufacturing
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Solution Overview
Problem
Existing series formation systems for battery manufacturing require multiple devices and frequent transfers between constant current and constant voltage charging modes, leading to low efficiency, high costs, and compromised battery quality.
Innovation Solution
A series formation system that integrates a power module and multiple formation modules, allowing for simultaneous constant current and constant voltage charging within a single device, with each formation module switching between charging modes based on real-time voltage monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple batteries connected in series are first placed in a constant current charging device for constant current charging, then the batteries can be charged in sequence, but several devices are required and formation efficiency is low
Solution Approach 1:
The charging device is designed to perform multiple functions: it can charge batteries in constant current mode and constant voltage mode simultaneously within a single device. This eliminates the need for separate constant current charging devices and constant voltage charging devices, reducing the total number of devices required while improving formation efficiency
Solution Approach 2:
The charging process is segmented into different modes (constant current and constant voltage) that can be applied to different batteries simultaneously based on their individual voltage levels. This allows the system to optimize charging for each battery independently while using a single integrated device
2Reliability
If batteries are transferred between constant current charging device and constant voltage charging device, then charging modes can be switched, but formation efficiency is low and battery quality is affected
Solution Approach 1:
The constant current charging function and constant voltage charging function are merged into a single charging device. This integration eliminates the need to transfer batteries between separate devices, preventing quality issues from transfers while maintaining high formation efficiency through seamless mode switching
3Productivity
If multiple batteries are charged simultaneously in series, then formation efficiency improves, but voltage fluctuation causes varying times to reach specified voltage value
Solution Approach 1:
The system incorporates real-time voltage monitoring of each battery in the series connection. Based on the detected voltage values, the control system automatically adjusts the charging mode for each battery individually, switching from constant current to constant voltage mode when appropriate. This feedback mechanism simplifies the control of simultaneous charging by handling voltage fluctuations automatically
Data Source
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AI summary
The present application relates to the technical field of secondary battery manufacturing, and in particular to a series formation system. The series formation system comprises a power source module and at least two formation modules, wherein the power source module is connected to the at least two formation modules in series, the at least two formation modules are connected in series, the power source module is used for supplying power to the at least two formation modules, and each formation module comprises a formation control circuit and a battery cell; and the formation control circuit is electrically connected to the battery cell, and the formation control circuit is used for controlling the magnitude of a voltage applied to the battery cell by means of the power source module and/or the magnitude of a current flowing through the battery cell, such that the battery cell switches between a constant-current charging mode and a constant-voltage charging mode. The problems in the prior art of low formation efficiency, excessively high cost and low formation quality are solved, such that the formation efficiency is greatly improved, the cost is reduced, and the product quality is improved.