CN211790864U

CN211790864U - Automatic charging and discharging device

Info

Publication number: CN211790864U
Application number: CN202020576779.2U
Authority: CN
Inventors: 程正年; 马锟; 汤海松; 马传刚
Original assignee: Anhui Xinli Electrical Equipment Co ltd
Current assignee: Anhui Xinli Electrical Equipment Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-10-27
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses an automatic charge-discharge device. Charging contactor (2) and current sensor (4) have been concatenated between its charging bus terminal (1) and group battery terminal (7), the cross-over connection has voltage sensor (3) between the positive negative pole of group battery terminal (7), and cross-over connection has current sensor (4) that concatenates, discharge contactor (5) and discharge resistance (9), voltage sensor (3), the output of current sensor (4) is connected with the input electricity of controller (6), the output of controller (6) respectively with charging contactor (2), the control end electricity of discharge contactor (5) is connected, be used for according to charge duration and discharge duration or the voltage of storage battery (8) or discharge current come to the automatic charging and discharging of group battery. The device is easy to be widely applied to the automatic charging and discharging of the storage battery pack in communication base stations, data rooms, communication power supplies configured in power systems and UPS power supplies in a commercialized mode.

Description

Automatic charging and discharging device

Technical Field

The utility model relates to a charge-discharge device, especially an automatic charge-discharge device.

Background

With the rapid development of information technology, a communication base station, a data machine room and an electric power system are all provided with a large number of communication power supplies and UPS power supplies; the energy storage device is a necessary working power supply for a base station, a machine room and a system, and is also a standby power supply for power failure in an accident, wherein the energy storage component is composed of storage batteries which are connected in series and in parallel. Although the storage battery plays an extremely important role in ensuring the normal operation of communication, data and a system under the condition of power failure caused by an accident, the storage battery has the defects in the use process, firstly, the storage battery needs to be continuously replenished and charged in order to enable the storage battery to be in a standby state with full capacity; secondly, in order to judge whether the capacity of the storage battery in a charging state for a long time is lost, a checking discharge test is required to be carried out on the storage battery so as to meet the clear requirements of the national power industry standard DL/T724 'technical rules for operation and maintenance of storage battery direct-current power supply devices for power systems'; at present, the maintenance discharge of the storage battery is carried out manually on site, so that the time and labor are wasted, the efficiency is low, and the time requirement of routine maintenance of the storage battery is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the weak point among the prior art, provide a labour saving and time saving, convenient to use's automatic charge and discharge device.

For solving the technical problem of the utility model, the technical scheme who adopts does, and automatic charge-discharge device is including charging bus terminal and group battery terminal, especially:

a charging contactor and a current sensor are connected between the charging bus terminal and the battery pack terminal in series;

a voltage sensor, a current sensor, a discharge contactor and a discharge resistor which are connected in series are connected between the positive electrode and the negative electrode of the battery pack terminal in a bridging manner;

the output ends of the voltage sensor and the current sensor are electrically connected with the input end of the controller, the output end of the controller is electrically connected with the control ends of the charging contactor and the discharging contactor respectively, and the controller is used for judging whether the charging time reaches the discharging period or not after the charging contactor is closed, if so, the charging contactor and the discharging contactor are disconnected in sequence, and when the discharging time reaches or the voltage of the storage battery pack is lower than a preset value or the discharging current exceeds the preset value, the discharging contactor and the discharging contactor are disconnected in sequence, and the nuclear capacity result can be uploaded to an upper computer.

As a further improvement of the automatic charging and discharging device:

preferably, the voltage sensor is a hall voltage sensor, or a voltage relay.

Preferably, the current sensor is a hall current sensor, or a shunt.

Preferably, the charging and discharging contacts are both direct current contacts, or electronic switches.

Preferably, the controller is a digital comparator, or a single chip microcomputer, or a digital signal processor.

Preferably, the charging period is 1 year and the discharging period is 10 hours.

Compared with the prior art, the beneficial effects are that:

after the structure is adopted, the storage battery can be automatically charged in a discharge period, namely a checking discharge test period, can be automatically discharged when the checking discharge test period is over, can be automatically stopped and restored when the discharge time is over, or the voltage of the storage battery pack is lower than a preset value or the discharge current exceeds the preset value, and can be uploaded to an upper computer, so that the storage battery checking device has the characteristics of time and labor saving and convenience in use, and is extremely easy to be widely and commercially applied to automatic charging and discharging of the storage battery pack in a communication base station, a data machine room and a communication power supply and a UPS power supply configured in a power system.

Drawings

Fig. 1 is a schematic diagram of a basic circuit structure of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the automatic charge and discharge device is constructed as follows:

a charging contactor 2 and a current sensor 4 are connected in series between the charging bus terminal 1 and the battery pack terminal 7; the charging contactor 2 is a dc contactor (or an electronic switch), and the current sensor 4 is a hall current sensor (or a shunt).

A voltage sensor 3, a current sensor 4, a discharge contactor 5 and a discharge resistor 9 which are connected in series are bridged between the positive electrode and the negative electrode of the battery pack terminal 7; the voltage sensor 3 is a hall voltage sensor (or a voltage relay), and the discharging contactor 5 is a dc contactor (or an electronic switch).

The output ends of the voltage sensor 3 and the current sensor 4 are electrically connected with the input end of the controller 6, and the output end of the controller 6 is respectively electrically connected with the control ends of the charging contactor 2 and the discharging contactor 5; the controller 6 is a digital comparator (which may also be a single chip or a digital signal processor).

During the use, only need earlier according to the utility model discloses be applied to the communication power supply of communication base station, data computer lab and electric power system configuration or the electrical parameter that each components and parts were selected to required capacity of storage battery in the UPS power, will again the utility model discloses a charging bus terminal 1 and group battery terminal 7 respectively with generating line and storage battery 8 electricity be connected can.

Under the regulation and control of the controller 6, after the charging contactor 2 is closed, the device charges the storage battery pack 8 until the time duration reaches 1 year. Next, the controller 6 sequentially opens the charging contactor 2 and closes the discharging contactor 5 to discharge the battery pack 8. When the discharging time reaches 10 hours or the voltage of the storage battery pack 8 is lower than a preset value or the discharging current exceeds a preset value, the discharging contactor 5 is disconnected, and the charging contactor 2 is closed in sequence to finish discharging and charge recovery. And the core-volume result can be uploaded to an upper computer.

It is apparent that those skilled in the art can make various changes and modifications to the automatic charging and discharging device of the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An automatic charging and discharging device, includes charging bus terminal (1) and group battery terminal (7), its characterized in that:

a charging contactor (2) and a current sensor (4) are connected in series between the charging bus terminal (1) and the battery pack terminal (7);

a voltage sensor (3), a current sensor (4), a discharge contactor (5) and a discharge resistor (9) which are connected in series are bridged between the positive electrode and the negative electrode of the battery pack terminal (7);

the output ends of the voltage sensor (3) and the current sensor (4) are electrically connected with the input end of the controller (6), the output end of the controller (6) is respectively electrically connected with the charging contactor (2) and the control end of the discharging contactor (5) for judging whether the charging time reaches the discharging period after the charging contactor (2) is closed, if so, the charging contactor (2) and the discharging contactor (5) are sequentially disconnected, and when the discharging time reaches or the voltage of the storage battery pack (8) is lower than a preset value or the discharging current exceeds the preset value, the discharging contactor (5) and the charging contactor (2) are sequentially disconnected.

2. The automatic charging and discharging device as claimed in claim 1, wherein the voltage sensor (3) is a hall voltage sensor, or a voltage relay.

3. The automatic charging and discharging device as claimed in claim 1, wherein the current sensor (4) is a hall current sensor, or a shunt.

4. The automatic charging and discharging device as claimed in claim 1, wherein the charging contactor (2) and the discharging contactor (5) are both direct current contactors, or electronic switches.

5. The automatic charging and discharging device as claimed in claim 1, wherein the controller (6) is a digital comparator, or a single chip microcomputer, or a digital signal processor.

6. The automatic charging and discharging device as claimed in claim 1, wherein the charging period is 1 year and the discharging period is 10 hours.