CN216436834U - Power supply control circuit for lithium battery pack of mobile communication base station - Google Patents
Power supply control circuit for lithium battery pack of mobile communication base station Download PDFInfo
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- CN216436834U CN216436834U CN202122531949.2U CN202122531949U CN216436834U CN 216436834 U CN216436834 U CN 216436834U CN 202122531949 U CN202122531949 U CN 202122531949U CN 216436834 U CN216436834 U CN 216436834U
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Abstract
The utility model relates to a power management technical field, the utility model discloses mobile communication base station lithium cell group power supply control circuit includes MCU, first electromagnetic relay, second electromagnetic relay, the first positive pole of power and power second positive pole, through the SOC of MCU inspection lithium cell group, whether the coil of control first electromagnetic relay and second electromagnetic relay's coil switch on, thereby the break-make of the first positive pole of control power and power second positive pole, thereby realize the equipment power supply in the mobile communication base station in grades, solved through voltage realize that the equipment power supply in the mobile communication base station in grades can lead to the long problem that is less than when the anticipation for the time of supplying power, the utility model is suitable for a power supply is organized to mobile communication base station lithium ion battery.
Description
Technical Field
The utility model relates to a power management technical field, in particular to mobile communication basic station lithium cell group power supply control circuit.
Background
The mobile communication base station is an interface device for accessing mobile equipment to the internet, and refers to a radio transceiver device for information transmission between a mobile communication switching center and a mobile telephone terminal in a certain radio coverage area. The mobile communication base station has machine room, electric wire, iron tower mast, etc., wherein the base station room is mainly equipped with signal transceiver, monitoring device, storage battery and air conditioner, etc., the work of the mobile communication base station can't leave the electric energy to support, at present, every mobile communication base station usually adopts the electric supply that the electric power department provides to supply power for the apparatus in the mobile communication base station, under the circumstances that the electric supply has a power failure, use the apparatus in the mobile communication base station to supply power through the storage battery, the prior art realizes the apparatus in the mobile communication base station to supply power in grades through the voltage of the storage battery, namely when the voltage of the storage battery is higher than a certain value, to all apparatuses in the mobile communication base station, when the voltage of the storage battery is lower than the value, disconnect the power supply of some apparatuses.
With the development of lithium batteries, a standby storage battery of a mobile communication base station is replaced by the lithium battery, and because the voltage of a lithium battery pack is relatively stable, the power supply for equipment in the mobile communication base station is realized by grading through the voltage, the power supply time of actual important equipment is possibly shorter than the expected time, and the mobile communication base station stops working.
SUMMERY OF THE UTILITY MODEL
The utility model solves the technical problems that: the power supply control circuit of the lithium battery pack of the mobile communication base station solves the problem that the power supply time length is shorter than the expected time length due to the fact that power supply is carried out on equipment in the mobile communication base station in a grading mode through voltage.
The utility model provides a technical scheme that above-mentioned technical problem adopted: the power supply control circuit of the lithium battery pack of the mobile communication base station comprises an MCU, a first electromagnetic relay, a second electromagnetic relay, a first positive electrode of a power supply and a second positive electrode of the power supply; the first electromagnetic relay comprises a first coil and a first normally closed contact; the second electromagnetic relay comprises a second coil and a second normally closed contact; the MCU comprises a first output end, a second output end and an RS485 pin; MCU reads the SOC of lithium cell group through RS485, MCU's first output links to each other with the one end of first coil, and MCU's second output and the one end of second coil link to each other, and the other end of first coil and the other end of second coil link to each other and are connected to the negative pole of MCU power, the one end of first normally closed contact is connected to the positive pole of lithium cell group, and the other end of first normally closed contact is as the first positive pole of power, and the other end of first normally closed contact links to each other with the one end of second normally closed contact, and the other end of second normally closed contact is as the second positive pole of power, according to actual demand, utilizes lithium cell positive pole, the first positive pole of power and the anodal equipment power supply in the mobile communication basic station of power supply second.
Furthermore, the control circuit also comprises a display unit, and the display unit is connected with the MCU.
Furthermore, the control circuit further comprises a first status indicator light and a second status indicator light, wherein the first status indicator light is connected with the first coil in series, and the second status indicator light is connected with the second coil in series.
Further, the first status indicator light is a red light, and the second status indicator light is a green light.
The utility model has the advantages that: the utility model discloses a mobile communication base station lithium battery pack power supply control circuit detects the SOC of lithium battery pack through RS458 of MCU, when the detected SOC is not less than the first set threshold, the first output end and the second output end of MCU are low level, the first positive pole and the second positive pole of lithium battery pack normally supply power, when the detected SOC is more than the second set threshold and less than the first set threshold, the second output end of MCU is high level, the coil of the second electromagnetic relay is powered on, the normally closed contact of the second electromagnetic relay is disconnected, the second positive pole of power is powered off, when the detected SOC is not more than the second set threshold, the first output end of MCU is high level, the coil of the first electromagnetic relay is powered on, the normally closed contact of the first electromagnetic relay is disconnected, the first positive pole of power is powered off, according to the actual demand, utilize the lithium battery positive pole, the first positive pole of power and the second positive pole of power to supply power for the equipment in the mobile communication base station, according to actual demand, utilize the anodal equipment power supply for among the mobile communication basic station of lithium cell positive pole, the first anodal and the power second positive pole of power, the utility model discloses a lithium cell SOC realizes the equipment power supply for among the mobile communication basic station in grades, has solved through voltage and has realized that the equipment power supply for among the mobile communication basic station in grades can lead to the long problem that is less than long when envisioning for the power supply.
Drawings
Fig. 1 is a circuit diagram of the power supply control circuit for the lithium battery pack of the mobile communication base station of the present invention, wherein KM1 represents the coil of the first electromagnetic relay, KM11 represents the normally closed contact of the first electromagnetic relay, KM2 represents the coil of the second electromagnetic relay, and KM21 represents the normally closed contact of the second electromagnetic relay.
Detailed Description
The utility model discloses mobile communication basic station lithium cell group power supply control circuit, as shown in figure 1, includes MCU, first electromagnetic relay, second electromagnetic relay, the first anodal V1+ of power and the second anodal V2 +; the first electromagnetic relay comprises a first coil KM1 and a first normally closed contact KM 11; the second electromagnetic relay comprises a second coil KM2 and a second normally closed contact KM 21; the MCU comprises a first output end, a second output end and an RS485 pin; the SOC of the lithium battery pack is read by the MCU through the RS485, a first output end of the MCU is connected with one end of a first coil KM1, a second output end of the MCU is connected with one end of a second coil KM2, the other end of the first coil KM1 is connected with the other end of a second coil KM2 and connected to a negative electrode of an MCU power supply, an anode of the lithium battery pack is connected with one end of a first normally closed contact KM11, the other end of the first normally closed contact KM11 serves as a first anode V1+ of the power supply, the other end of the first normally closed contact KM11 is connected with one end of a second normally closed contact KM21, and the other end of the second normally closed contact KM21 serves as a second anode V2+ of the power supply, and according to actual requirements, the anode V +, the first anode V1+ of the power supply and the second anode V2+ of the power supply are used for supplying power for equipment in the mobile communication base station.
The control principle is as follows: the RS458 of the MCU detects the SOC of the lithium battery pack, when the detected SOC is not smaller than a first set threshold value, the first output end and the second output end of the MCU are both low levels, the first positive electrode V1+ and the second positive electrode V2+ of the lithium battery pack normally supply power, when the detected SOC is larger than a second set threshold value and smaller than the first set threshold value, the second output end of the MCU is high levels, a coil KM2 of the second electromagnetic relay is electrified, a normally closed contact KM21 of the second electromagnetic relay is disconnected, a power supply second positive electrode V2+ is powered off, when the detected SOC is not larger than the second set threshold value, the first output end of the MCU is high levels, a coil KM1 of the first electromagnetic relay is electrified, a normally closed contact KM11 of the first electromagnetic relay is disconnected, a power supply first positive electrode V1+ is powered off, and whether the first positive electrode V1+ and the second positive electrode V2+ of the power supply power is controlled according to the SOC of the battery pack.
Furthermore, the control circuit also comprises a display unit, and the display unit is connected with the MCU.
Specifically, the display unit is configured to display the detected SOC.
Furthermore, the control circuit further comprises a first status indicator light and a second status indicator light, wherein the first status indicator light is connected with the first coil in series, and the second status indicator light is connected with the second coil in series.
Further, the first status indicator light is a red light, and the second status indicator light is a green light.
Specifically, when the red light is on, the first positive electrode and the second positive electrode are both powered off, when the green light is on, the first positive electrode is powered on, the second positive electrode is powered off, when the red light and the green light are both not powered on, the electric quantity of the lithium battery pack is enough, and all devices are normally powered on.
The utility model discloses among the mobile communication basic station lithium cell group power supply control circuit, MCU's first settlement threshold value and second settlement threshold value are set for according to basic station power supply requirement.
Claims (4)
1. The power supply control circuit of the lithium battery pack of the mobile communication base station is characterized by comprising an MCU, a first electromagnetic relay, a second electromagnetic relay, a first positive pole of a power supply and a second positive pole of the power supply; the first electromagnetic relay comprises a first coil and a first normally closed contact; the second electromagnetic relay comprises a second coil and a second normally closed contact; the MCU comprises a first output end, a second output end and an RS485 pin; MCU reads the SOC of lithium cell group through RS485, MCU's first output links to each other with the one end of first coil, and MCU's second output and the one end of second coil link to each other, and the other end of first coil and the other end of second coil link to each other and are connected to the negative pole of MCU power, the one end of first normally closed contact is connected to the positive pole of lithium cell group, and the other end of first normally closed contact is as the first positive pole of power, and the other end of first normally closed contact links to each other with the one end of second normally closed contact, and the other end of second normally closed contact is as the second positive pole of power.
2. The power supply control circuit of the lithium battery pack of the mobile communication base station as claimed in claim 1, further comprising a display unit, wherein the display unit is connected with the MCU.
3. The power supply control circuit of the lithium battery pack of the mobile communication base station as claimed in claim 1 or 2, further comprising a first status indicator lamp and a second status indicator lamp, wherein the first status indicator lamp is connected in series with the first coil, and the second status indicator lamp is connected in series with the second coil.
4. The power supply control circuit of the lithium battery pack of the mobile communication base station as claimed in claim 3, wherein the first status indicator light is a red light and the second status indicator light is a green light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122531949.2U CN216436834U (en) | 2021-10-20 | 2021-10-20 | Power supply control circuit for lithium battery pack of mobile communication base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122531949.2U CN216436834U (en) | 2021-10-20 | 2021-10-20 | Power supply control circuit for lithium battery pack of mobile communication base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216436834U true CN216436834U (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122531949.2U Active CN216436834U (en) | 2021-10-20 | 2021-10-20 | Power supply control circuit for lithium battery pack of mobile communication base station |
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| Country | Link |
|---|---|
| CN (1) | CN216436834U (en) |
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2021
- 2021-10-20 CN CN202122531949.2U patent/CN216436834U/en active Active
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