-48V direct current single system double-power-source storage battery contact device and switching method thereof

Abstract

The invention relates to a -48V direct current single system double-power-source storage battery contact device and a switching method thereof. The -48V direct current single system double-power-source storage battery contact device comprises storage batteries, two ways of power sources and a monitoring unit, wherein the storage batteries are divided into a first storage battery pack and a second storage battery pack, the first storage battery pack is connected with the second storage battery pack through a battery bus coupler switch, the battery bus coupler switch comprises a switching air switch, an electrical operation mechanism is arranged on the switching air switch, and the electrical operation mechanism is connected with the monitoring unit. The structure of the -48V direct current single system double-power-source storage battery contact device is characterized in that the relation between the two battery packs are automatically controlled in real time by using a system state obtained by monitoring of the monitoring unit, and thus the two battery packs can be maintained in the optimal states all the time.

Description

technical field [0001] The invention relates to a storage battery connection device, in particular to a -48V DC single-system double-power storage battery connection device and a switching method thereof. Background technique [0002] When a traditional dual power supply system is used to provide power to communication equipment, it often occurs that the power supply capabilities of the two power supplies are inconsistent, resulting in a large voltage difference between the two power supplies. Thus, the battery of the power supply with higher output capacity is discharged. For example, when the AC power is normal, the output capacity of power supply A or power supply B is smaller than the load of the power supply, or one of the power supply input circuit breakers trips, and the battery of the power supply of the power supply will be in a discharge state at this time, causing the batteries of the two power supplies to charge and discharge. Unbalanced phenomenon; it may also ...

AI Technical Summary

Problems solved by technology

For example, when the AC power is normal, the output capacity of power supply A or power supply B is smaller than the load of the power supply, or one of the power supply input circuit breakers trips, and the battery of the power supply of the power supply will be in a discharge state at this time, causing the batteries of the two power supplies to charge and discharge. Unbalanced phenomenon; it may also be in the case of an AC power outage. At this time, the batteries of the two power sources are in a state of discharge. Due to the difference in the load of the two power sources, the discharge current of the battery of the power source with a large load is large, and the battery voltage is low.

In addition, even if the loads of the two power sources are the same, if there is a difference in the power supply capacity of the battery, the voltage of the battery with insufficient power supply capacity will be lower than the voltage of the other battery

The above phenomena not only reduce the duration of the battery and the power supply, but also cause the service life of the battery to decrease.

Images