The battery should be "dismissed", don't be too rolled!

As a major part of the communication power supply, the battery storage battery uses its own power to maintain the normal operation of the communication equipment during power outages. Excessive discharge will affect the life of the battery. In order to reduce the damage to the battery, we can try the scientific "electrociation".

1

What is "power"?

"Power" refers to the power outage of the city electricity (that is, the working frequency 220 V AC power), the battery discharge to a certain depth, the system DC voltage is lower than a certain threshold, the control load DC contactor is broken, the cut off or all The function of the power supply circuit where the load (that is, the communication equipment) is located.

2

Why should the battery be "dismissed"? After reading it, you can understand it!

In order to protect the battery discharge, the working time of the important load was extended, and the "lower power" function was added. The DC contactor was used to break the battery and the non -important business load.

3

Do you know the battery? Do you know these methods?

After years of development, the communication power supply has developed a series of power protection functions.

Delivery at once: The energy of the battery is not enough, and the load is powered off for relatively unimportant loads. Because it was the first disconnection, it was called a call.

Delivery of the load: After the electricity is called at once, the battery is still supplying important loads. Since the municipal electricity has not been restored, when the discharge is close to the depth warning line of the battery, in order to protect the battery, the power supply circuit of important load will also be disconnected.

Battery Electricity: The last step is to lower the electric action. When the battery discharge is close to the set low threshold, disconnect the power supply circuit between all loads of the battery.

In actual work, according to the configuration of the power supply system, the CSU (centralized system management unit, internal component for managing the power supply) control system gradually performs [load-one power-> load secondary power-> battery power] There are fewer scenes, and the following two operations are usually performed.

If the battery is configured (the secondary power of the load is not configured), the CSU control system is gradually performed by [load once-off-> battery power) operation. If the load is configured with a secondary power (uncontested battery power), the CSU control system is gradually performed by [Delivery-> load secondary power] operation. 4

The battery needs to be "removed", the n mode allows you to "get on"

Detecting "battery voltage" is not the only electricity condition. In fact, we still have other "power -on" modes: "battery remaining capacity" and "power outage time".

Take "Delivery once" as an example:

In other words, when one of the "battery remaining capacity"/"power outage time" and "battery voltage" meet the electrocomputer conditions, the electricity operation is triggered.

5

List of "Dialectic" parameters

It can be seen from the principle of Xiaocheng that the CSU is called by detecting the state of the battery. Let's take a look at the settings of the "lower power" parameter in the CSU (currently the power on the setting of a 48 V lead -acid battery product product Parameters, only for reference).

Take a "chestnut", assuming that we need to call the battery when the voltage is lower than 45.6 V. We only need to set it: "Electricity mode" is "lower electric voltage", "load once," "Allow", "Delivery Voltage once" is "45.6 V".

After today's study, we learned:

The basic concepts and reasons for "call". The trigger conditions and working principles of the load, the secondary power of the load, the secondary power of the load, and the battery power. The electricity mode is: battery voltage, power outage time, and battery remaining capacity. Parameter settings about "power -on". Reprinted content only represents the author's point of view

Does not represent the position of the Institute of Physics of the Chinese Academy of Sciences

If you need to reprint, please contact the original public account

Source: ZTE Document

Edit: Lezi Superman

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