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What is Capacity Grading Machine?

A battery capacity grading machine is a device used to test and grade the capacity of batteries. Due to process reasons in the battery manufacturing process, the actual capacity of the battery cannot be completely consistent, so we need capacity grading machines to test and classify.It's commonly employed in industries where batteries are a critical component, such as in the production of electric vehicles, consumer electronics, and renewable energy systems.

These machines typically assess the capacity of batteries by subjecting them to various tests that simulate real-world usage conditions. This may involve discharging the battery at different rates, cycling it through charge and discharge cycles, and monitoring its performance throughout these processes.

The grading aspect refers to categorizing batteries based on their capacity and performance characteristics. This grading helps manufacturers ensure that batteries meet certain quality standards and allows them to sort batteries into different classes or grades based on their performance capabilities. This can be crucial for ensuring that only batteries with consistent and reliable performance are used in products.

How it Works？

Battery Preparation

- Batteries to be graded are prepared by charging them to full capacity according to manufacturer recommendations.
- Any necessary conditioning cycles are performed to ensure batteries are in a stable and consistent state before testing begins.

Data Analysis

- Test results are collected and analyzed using integrated software or algorithms to determine each battery's capacity, efficiency, and overall health.
- Grading criteria are applied to classify batteries into different categories based on their performance characteristics.

Testing Process

- The battery capacity grading machine subjects batteries to controlled discharge cycles at various rates to simulate real-world usage scenarios.
- During testing, parameters such as voltage, current, and temperature are monitored to assess battery performance accurately.

Reporting and Grading

- Detailed reports are generated to provide insights into individual battery performance, including capacity measurements, discharge curves, and any abnormalities detected.
- Batteries are assigned grades or classifications based on predefined criteria, enabling manufacturers to make informed decisions about their use in production.

Benefits of Battery Capacity Grading Machine

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Enhanced Battery Performance

- Accurate grading ensures that only high-quality batteries are used, leading to improved performance and reliability in end products.
- Identifying and removing underperforming batteries from circulation prevents potential issues such as premature failures or reduced lifespan.

Increased Efficiency

- The battery capacity grading machine streamlines the testing process, allowing for faster and more efficient assessment of large quantities of batteries.
- Automated grading and analysis capabilities minimize human error and reduce the time and resources required for manual testing.

Cost Savings

- By grading batteries accurately, manufacturers can optimize their production processes and avoid costly rework or recalls caused by using defective batteries.
- Ensuring that only batteries meeting specified performance criteria are utilized reduces the risk of warranty claims and associated expenses.

Quality Assurance

- Consistent grading standards ensure that all batteries meet or exceed quality requirements, maintaining product integrity and customer satisfaction.
- Compliance with industry standards and regulations is facilitated by using precise and reliable grading methods.

Each battery has an independent constant current and constant voltage source, which is stable without impact.

The equipment is controlled by stm32 single chip microcomputer and connected by computer. It can save all test data and curves, or directly operate through the equipment keyboard board, set the process, complete the test and sort.

Detect and display the status of each battery in real time. If there is any abnormality, the channel will stop working and the indicator light will be on.

With power down protection function, the original workflow can continue to run after an incoming call.

The power tube adopts field effect tube, which is suitable for batteries with low voltage discharge, such as lithium iron phosphate battery.

Highlight of Terli

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Automotive Industry

Consumer Electronics

Renewable Energy Systems

Industrial Applications

Automotive Industry

- Battery capacity grading is crucial in electric vehicles (EVs) to ensure optimal performance and range.
- Graded batteries are used in EVs for propulsion, energy storage, and auxiliary systems, contributing to vehicle efficiency and reliability.

Consumer Electronics

- Battery capacity grading is employed in the production of smartphones, laptops, and other portable devices to guarantee consistent performance and battery life.
- Graded batteries enable manufacturers to meet consumer expectations for product longevity and reliability.

Renewable Energy Systems

- Battery capacity grading is essential for energy storage systems, such as those used in solar and wind power installations.
- Graded batteries help optimize energy capture, storage, and distribution, supporting the transition to renewable energy sources.

Industrial Applications

- Battery capacity grading is used in various industrial sectors, including telecommunications, aerospace, and marine, to ensure reliable power supply and backup systems.
- Graded batteries are deployed in critical applications where downtime and system failures must be minimized.