Use DC power to charge the battery, and you need to be careful when testing. For the battery charging test, the following three points need special attention. l The battery ignited during wiring When the battery is connected, the battery (residual voltage) discharges the capacitance of the positive and negative terminals of the power supply, resulting in sparks during wiring. l Reverse battery connection When the charging power is connected, the reverse polarity of the battery may cause damage to the DC power supply and even cause a short circuit explosion of the battery. l Battery inverted Reverse power from the battery to the power supply will consume power in the battery and may cause damage to the power supply. l The battery is precharged. There is an equivalent capacitance inside the battery. When the charging power source charges the battery, it will generate a current overshoot. How does ITECH solve the above problems in the battery charging process? 1. The DC power supply IT6000C is connected to the power battery of the object under test. Use the power supply's Remote Sense to collect the voltage VOC of the power battery to determine whether the battery has reverse polarity. Figure one 2. The battery polarity is connected correctly. IT6000C sets the precharge voltage and precharge current. Use Digital Port I / O to generate a high-level drive DC contactor I0-2 to close the battery to prevent ignition and pre-charge the battery. After the battery is pre-charged, close I0-1 to charge the battery. Figure 2 Through the above scheme, it is possible to prevent ignition when the battery is connected, avoid potential safety hazards caused by reverse connection of the battery, and effectively solve the problem of battery precharge. In order to simplify the user's work of connecting peripheral circuits and practically solve the safety problem of battery testing, IT6000C option IT-E165A uses the above principles to effectively complete the functions of anti-fire, anti-reverse, and anti-reverse. chocolate coating machine,chocolate coating pan,chocolate polishing machine Chengdu LST Science&Technology Co., Ltd. , https://www.lstmachinery.com