How is the battery capacity detected?

Battery capacity testing is performed through a battery compartment.

Battery capacity detection principle:

The first step is to fully charge the battery to the rated voltage, which is generally 4.2V.

The second step the battery is discharged, the rated voltage is reached, and the amount of discharged electricity is recorded. The voltage is generally 3.0V.

The third step is to charge the battery to a normal amount, generally set to 3.8V-4.0V.

The capacity recorded in the second step is the capacity of the battery.

How much capacity is detected in the battery can only be measured with a professional battery comprehensive index tester, while the average user cannot detect the battery capacity with a general universal meter, and the universal meter can only detect whether the battery is 2 volt unit damage. The detection capacity can only be determined by using the viewing estimate to basically determine the quality and residual capacity of the battery. How to detect the electric bicycle battery? Take the 48 volt 500 watt electric bicycle: determine whether the battery has an internal short circuit (bad battery): After riding for a while or after charging, the bicycle is allowed to stand for several hours, and the voltage is measured at the charging plug. 48 volts or a little higher is a normal battery (regardless of old and new). If it can only reach 46 volts or less, it means there is a short circuit in the battery (four sets of batteries in 48 volts, each set consists of 6 2 volt batteries connected in series to 12 volts), showing that 10 volts is a broken battery. Note: When there is a battery short circuit (only 10 volts in the four battery packs), the charger can still display full and green light when the total voltage can reach 46 volts, but the charging time is 0.5-1 hours longer (lighter) To overcome the danger of charging); when there are more than two batteries short-circuited, charge the battery below 46 volts with a charger that is fully charged with 48 volts, and it will never be full of green light (all batteries are overcharged) Damage). In this case, just replace the battery pack of less than 12 volts in the four groups. Judging the battery's old and new, judging the scrapped battery: 48 volt motor 500 watt electric bicycle: 1 After fully charged, if the sudden acceleration of riding, the battery gauge needle only falls less than half a grid (a small scale), it is a new battery. 2 After the battery is fully charged, if it suddenly accelerates the ride, the battery gauge needle drops a grid. It is a new and old battery. 3 If the sudden acceleration of the ride, the battery gauges 1-2 grids, it is quickly scrapped old batteries. 4 If the sudden acceleration of riding, the power of the needle drops more than 3 is scrapped battery. (Do not ride for a full charge of electricity, the electricity will be self-discharge and run). If it is a fully charged 64 volt 500 watt bicycle (at the same power, the higher the operating voltage, the lower the motor current): 1 If the acceleration is accelerated, the battery indicator pin is at the maximum, basically does not move, it is the new battery. 2 If you suddenly accelerate the ride, the gauge pin drops half a grid. It is a new and old battery. 3 If you suddenly accelerate the ride, the power gauge pin drops 1-2 grids. It is the old battery that is quickly scrapped. 4 If you suddenly accelerate the ride, the drop of the gauge pin more than 3 grids is the scrapped battery. Note: The above is the best estimate of the battery capacity, the estimated temperature when the temperature is 25 degrees, if it is in the winter below 15 degrees, observe the electricity meter should drop 0.5-2 again, because the battery is below 15 degrees When the battery is charged and discharged, the efficiency is reduced by about one-third (the capacity is reduced and the internal resistance is increased). The above estimation method is based on the newer internal resistance of the battery, and the sudden acceleration of the maximum current test, the battery old and new and scrapped batteries will appear! I hope to be helpful to my friends. If you have any questions, please ask.

The battery capacity tester is specifically designed for battery packs to perform verification tests, capacity tests, battery pack routine maintenance, engineering acceptance, and other DC power load bicycle capabilities.

Using the latest wireless communication technology, the PC monitoring software can monitor the battery discharge process in real time and monitor the discharge process of each battery. The power consumption part adopts the new PTC ceramic resistor as the discharge load, completely avoiding the red heat phenomenon, safe and reliable without pollution. The whole machine is controlled by microprocessor, LCD display and Chinese menu. The design is novel, small in size, light in weight and convenient to move. After the various discharge parameters are set, the entire constant current discharge process is automatically completed. Fully intelligent make the entire discharge process safer.

The intelligent discharge monitor's convenient and intelligent professional design makes the discharge test work simple and easy, greatly reduces the labor intensity of professional maintenance personnel, and improves the scientific and intelligent discharge test.

Single-unit detection the whole group of discharge meters combines battery testing technology, wireless communication technology, computer information processing and other technologies on the basis of the original products, and introduces a new generation of single-unit detection complete discharge meters with wireless monomer detection function. The wireless transmission unit voltage acquisition system can transmit data in short-distance wireless communication. The data acquisition speed is fast, the precision is high, the anti-interference ability is strong, and the operation is simple. The voltage change of the battery during the discharge process can be recorded, effectively avoiding the connection. The safety hazard caused by the error caused by the line and the damage of the connecting cable, the “over-bridge voltage” generated by the wirelessly collecting the connecting wires between the single-voltage voltage batteries ensures that there is a large connection resistance for the looseness of the individual connectors that may exist during the discharging process, thereby Individual voltage anomalies are monitored, hidden dangers are eliminated in time, and major accidents such as fires are prevented from being overheated at the joints, which enhances the stability and reliability of the system and expands the scope of use of the products.

There are two main ways to monitor the voltage of a traditional single cell: manual measurement and wired automatic measurement. Manual measurement cannot be continuous and synchronized due to time, human error is high, and precision is low, so it is impossible to make a more accurate and objective judgment on the performance of the battery, and the workload is large. Wired automatic measurement improves the speed and accuracy of data acquisition compared with manual measurement, and reduces the workload. However, there are many connections and complicated operations. To detect a group of 24 single cells, 25 pieces need to be taken from the host. The single test cable is connected to the battery pack. The length of the test cable is less than one meter and more than ten meters. This not only increases the purchase cost of the enterprise, but also causes a connection error due to the long and long connection cable, and the connection cable cannot be avoided security risks.

The single-discharge tester of the wireless transmission unit voltage acquisition system is used to effectively overcome the shortcomings of the conventional single-cell voltage monitoring method. The wireless transmission unit voltage acquisition system adopts Nordic's latest nRF9E5 chip with its own reference function to greatly improve the voltage acquisition accuracy and data confidentiality. At the same time, a high-speed CPU is built in to process the collected data, each wireless. The transmission unit voltage acquisition system can simultaneously collect multi-cell voltages. It can be set by wireless function of the host, with high transmit power, high receiving sensitivity, high anti-interference ability, based on FSK modulation, and efficient forward error correction channel coding technology to ensure the accuracy of measurement results. The ISN band can be used without application, and can adapt to various data transmission formats such as 232, 485, LIN, etc., and provide convenience for data processing.

Using a new generation of monomer detection and complete discharge meter to monitor the single battery, without connecting the single battery and the host, it can be directly tested, easy to use, and reduce the purchase cost of the enterprise.

This manual is intended to guide the user to operate the HDGC3982 intelligent discharge monitor.

1. The operator must have an electrician or above.

2. The operator should pay special attention to the safety of personnel and equipment during use.

3, RTKR-II intelligent discharge monitor is a precision test equipment, should be handled gently during use, do not throw and throw, the result will be lighter, resulting in deformation of the outer casing, which will cause internal components to malfunction, affecting Normal use.

4. Avoid splashing liquid onto the surface of the intelligent discharge monitor to avoid permanent damage from entering the system. Flammable gases may cause an explosion.

For your safety, please read the entire contents of this manual before operating the smart battery discharge meter. The surveyor should be familiar with the characteristics of the system being tested. It is very important to take the correct test steps to avoid injury to yourself and other people in the work area and damage to the test equipment.

We assume that the operator has a comprehensive understanding of the battery, charging system and equipment startup before using the tester. Before using this tester, be sure to refer to and follow the relevant safety precautions and the test procedures provided by the manufacturer of the equipment under test.

Safety Information Safety information is used to avoid personal injury and equipment damage.

Read, understand and follow the safety information and instructions in this manual. Safety information includes:

Danger! It indicates a very urgent and dangerous situation that, if not avoided, it could result in serious injury or death.

Caveat! It indicates a potentially hazardous situation that, if not avoided, could result in serious injury or death.

Note! It indicates a potentially dangerous situation that, if not avoided, could result in general injury.

Important! It indicates a potentially hazardous situation that, if not avoided, could result in damage to the test equipment.

Important safety guidelines

Warning!

Explosion danger! The gas from the battery is extremely explosive.

Read, understand, and follow all guidelines for the tester, battery, and any other equipment near the battery.

Do not smoke or fire wood. Do not place metal tools near the battery or create sparks near the battery.

Clean the wiring terminal before using the tester. Protect your eyes, nose and mouth when cleaning. Use soda and water to neutralize the acidity and reduce the corrosiveness of the air.

Do not place the tester in rain or snow or in a humid environment.

Do not allow battery gas or sulfuric acid to touch the tester's housing.

Never charge, test, or apply a load on a frozen battery. The battery should be thawed and warmed to room temperature before performing the above operations. Charging a frozen battery or attempting to test it will cause the battery to explode and cause personal injury.

Make sure all test connectors are connected according to the guidelines before testing.

Make sure that the two battery clips are securely connected to the battery.

Battery explosion can cause casualties.

Warning!

To prevent burns

The current generated by the short circuit of the battery is sufficient to melt the various ornaments and solder them to the metal. Remove all accessories when working near the battery. Short circuits will cause injuries.

The page contains the contents of the machine translation.