SPD3000X, X-E, and -C and Battery Charging
These power supplies are versatile, general-purpose power supplies, but are not specifically suited to battery charging. We recommend using equipment that is designed for and optimized specifically for the type of battery you are charging.
Jim Wilson
Last Update för 9 månader sedan
During power on, the high and low terminals of these power supplies are momentarily connected. Be sure to disconnect the load/device from the power supply outputs before powering the supply on or off.
Battery charging is often an unsupervised process. It is important to have controls in place that limit overcharging and the safety risks of overheating, internal damage, and fires or explosions. Some examples of controls include, overvoltage protection, overcurrent protection, short circuit protection, and reverse polarity protection.
Risks of overcharging include reduced charge capacity, and other performance changes in the battery.
Overvoltage Protection
The SPD series supplies do not have an OVP user setting that will prevent a user from adjusting the voltage too high, clamp the voltage at a specific level, or turn the supply output off.
Overcurrent Protection
The variable output channels of the SPD series supplies each have an OCP setting. If the load current of an output channel exceeds its OCP limit, the output shuts off.
Short Circuit Protection
The output channels of Siglent SPD provide protection voltage and current 1A. If powering a battery or active load, a high-power rectifier with sufficient voltage breakdown and forward current specifications should be added to the circuit. The reverse breakdown voltage rating and forward current rating of this blocking diode should be selected appropriately.
Reverse Polarity Protection
The addition of reverse polarity protection is needed to allow the supply to provide full forward current while blocking reverse current that may rapidly discharge a battery, potentially damaging the battery, wiring, or power supply.
One important reason for blocking reverse current is that the power supply briefly connects its high and low outputs during the normal power up cycle when it is first powered on, which would short the battery terminals.
Constant Current Mode
During a large part of the charge cycle of a battery, the supply would hold the constant current that you set. Something to be aware of is that the SPD series supplies produce a continuous audible chirp for as long as the supply is holding constant current.