CN214380173U - Lithium battery pack for fire-fighting emergency power supply screen - Google Patents
Lithium battery pack for fire-fighting emergency power supply screen Download PDFInfo
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- CN214380173U CN214380173U CN202023084861.2U CN202023084861U CN214380173U CN 214380173 U CN214380173 U CN 214380173U CN 202023084861 U CN202023084861 U CN 202023084861U CN 214380173 U CN214380173 U CN 214380173U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the field of lithium batteries, in particular to a lithium battery pack for a fire-fighting emergency power supply screen, which comprises a lithium battery, an over-temperature protection auxiliary unit, a rectifier diode unit, a charging relay, a discharging relay, a fuse, a BMS battery management system and a shunt, the BMS battery management system comprises a control unit and an information acquisition unit, the anode of the lithium battery is connected with a rectifier diode unit through the over-temperature protection auxiliary unit, the negative electrode of the lithium battery is connected with the shunt, the information acquisition unit is respectively connected with the lithium battery and the control unit, the control unit is also respectively connected with the lithium battery, the charging relay, the discharging relay and the current divider, the charging relay and the discharging relay are arranged in series, and a series link of the charging relay and the discharging relay is connected in parallel with the rectifying diode unit. The utility model discloses mainly be in order to fall under the circumstances of electricity in the market point, provide safe, environmental protection, the sufficient electric energy supply of energy for the user.
Description
Technical Field
The utility model relates to a lithium cell technical field, concretely relates to a lithium cell package for fire control emergency power source screen.
Background
The lithium battery system for the fire-fighting emergency power supply screen has the main function of providing emergency electric energy storage for fire-fighting facilities, and can maintain the fire-fighting facilities to continue stable work under the condition that the commercial power is powered off.
The lead-acid battery pack is used as energy supply for the fire emergency standby power supply system, and the power supply system is automatically switched to supply power to the lead-acid battery pack under the condition that mains supply is powered off.
The defects of using lead-acid batteries for power supply mainly include the following aspects as shown in table one: 1. the lead-acid battery is seriously polluted and is not matched with the current national environmental protection concept; 2. the lead-acid battery is easy to cause thermal runaway when the working temperature exceeds 40 ℃, so that the danger of combustion is generated; 3. the lead-acid battery has short cycle life; 4. the lead-acid battery has low specific capacity; 5. the charge-discharge electric energy conversion efficiency is low.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a lithium cell package for fire control emergency power source screen can provide safety, environmental protection, sufficient electric power deposit for the fire control facility to carry out seamless alternating current-direct current conversion with fire control emergency power source screen, with the difficult problem more than solving.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a lithium battery pack for a fire-fighting emergency power supply screen comprises a lithium battery, an over-temperature protection auxiliary unit, a rectifier diode unit, a charging relay, a discharging relay, a fuse, a BMS battery management system and a shunt, wherein the BMS battery management system comprises a control unit and an information acquisition unit, the anode of the lithium battery is connected with the rectifier diode unit through the over-temperature protection auxiliary unit, the cathode of the lithium battery is connected with the shunt, the information acquisition unit is respectively connected with the lithium battery and the control unit, the control unit is also respectively connected with the lithium battery, the charging relay, the discharging relay and the shunt, the charging relay and the discharging relay are arranged in series, a series link of the charging relay and the discharging relay is connected with the rectifier diode unit in parallel, and the rectifier diode unit comprises a first diode and a second diode which have opposite current directions, the cathode of the first diode is connected with the cathode of the second diode, the anode of the first diode is connected with the over-temperature protection auxiliary unit, the anode of the second diode is connected with the fuse, and a common node of the first diode and the second diode is connected with a common node of the charging relay and the discharging relay.
As optimization, the information acquisition unit comprises a voltage acquisition unit and a temperature acquisition unit.
Preferably, the over-temperature protection auxiliary unit comprises a temperature control switch, a shunt release and an air switch, the temperature control switch is connected in series with a shunt coil of the shunt release, a series link of the temperature control switch and the shunt coil is connected in parallel with the battery, a release of the shunt release is connected in series with the air switch, and a series link of the release and the air switch is connected in series with the battery and the rectifier diode unit.
As optimization, the control unit is further connected with an upper computer.
As optimization, the control unit is also provided with a debugging port.
A lithium battery pack for a fire-fighting emergency power supply screen has the following technical effects:
1. the lithium battery system is low in safety risk, and the use risk of a user is invisibly reduced;
2. because of the lithium battery, the product has no pollution to the environment and completely conforms to the national green environmental protection concept;
3. the service life is long, and the production waste caused by frequent replacement of batteries by a user is avoided;
4. the electric quantity of the unit volume and the weight is reserved more, so that the requirement of a user on backup electric power can be increased;
5. under the condition of power failure at a market point, the system provides safe, environment-friendly and sufficient electric energy supply for users.
Drawings
Fig. 1 is a schematic structural diagram of a lithium battery pack for a fire-fighting emergency power supply screen according to the present invention;
FIG. 2 is a circuit diagram of FIG. 1;
fig. 3 is a schematic diagram of a connection circuit of the over-temperature protection auxiliary unit and the lithium battery.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In order to solve the technical problem, the utility model discloses a following technical scheme:
as shown in fig. 1-3, a lithium battery pack for fire-fighting emergency power supply screen comprises a lithium battery 1, an over-temperature protection auxiliary unit 2, a rectifier diode unit 3, a charging relay 7, a discharging relay 8, a fuse 4, a BMS battery management system 6 and a shunt 5, wherein the output positive electrode and the output negative electrode of the lithium battery pack are respectively and electrically connected with the main positive end and the main negative end of a power supply screen battery interface, and the BMS battery management system 6 comprises a control unit 6c and an information acquisition unit. When the current exceeds a prescribed threshold, the BMS battery management system controls the charging relay 7 or the discharging relay 8 to be turned off to protect the battery system. The lithium battery 1 is composed of a plurality of lithium battery cells connected in series.
In this embodiment, the information acquisition unit includes voltage acquisition unit 6a and temperature acquisition unit 6b, the information acquisition unit adopts 5238 collection chip, voltage acquisition unit 6a and temperature acquisition unit 6b are integrated in 5238 collection chip, the positive negative pole of every lithium electricity core and the pin one-to-one of 5238 collection chip are connected, can gather the temperature and the voltage of lithium cell, the control unit adopts the STM32F103 chip, 5238 collection chip and STM32F103 chip pass through can bus connection, 5238 collection chip will gather temperature information and voltage information transmission for STM32F103 chip, the lithium cell provides the electric energy for the STM32F103 chip.
The positive pole of the lithium battery 1 is connected with the rectifier diode unit 3 through the over-temperature protection auxiliary unit 2, in this embodiment, the over-temperature protection auxiliary unit 2 includes a temperature controlled switch TB, a shunt release 21 and an air switch DB, the temperature controlled switch TB is connected in series with a shunt coil 211 of the shunt release 21, a serial link of the temperature controlled switch TB and the shunt coil 211 is connected in parallel with the lithium battery 1, a release 212 of the shunt release 21 is connected in series with the air switch DB, the release 212 is arranged at a stationary end of the air switch, and a serial link of the release 212 and the air switch DB is connected in series with the lithium battery 1 and the rectifier diode unit 3. The temperature control switch TB is connected in parallel by 8 paths of temperature control switches.
The main effect of excess temperature protection auxiliary unit is when BMS battery management system's temperature detects the inefficacy, can in time cut off power supply circuit, for the safety increase one deck safety protection of electrical power generating system. A lithium battery system for fire control emergency power source screen can provide safe, environmental protection, sufficient electric power deposit for the fire control facility to carry out seamless alternating current-direct current conversion with fire control emergency power source screen. The temperature setting of the BMS battery management system is lower than the temperature setting of the temperature controlled switch.
When the battery loop is normally electrified, the opening coil is not electrified, the moving end of the air switch is connected with the release, and at the moment, the air switch is closed; when the temperature of the battery loop rises to the upper limit, the opening coil is electrified, and the air switch is tripped to open the switch.
Supposing that the overload protection temperature of the BMS battery management system is set to 65 degrees, the closing temperature of the temperature control switch is 80 degrees, when the BMS battery management system does not fail, the temperature exceeds 65 degrees at the moment, the BMS battery management system controls the charging relay or the discharging relay to be disconnected, at the moment, the whole loop is broken, when the BMS battery management system fails, the temperature control switch is closed, the opening coil is closed, and the air switch is opened.
The negative electrode of the lithium battery 1 is connected with the current divider 5, the control unit 6c is also respectively connected with the charging relay 7, the discharging relay 8 and the current divider 5, the charging relay 7 and the discharging relay 8 are connected in series, the fixed end of the charging relay is connected with the movable end of the discharging relay, and the series link of the charging relay 7 and the discharging relay 8 is connected in parallel with the rectifier diode unit 3, the rectifier diode unit 3 includes two first and second diodes D1 and D2 having opposite current directions, the cathodes of the first diode D1 and the second diode D2 are connected, the anode of the first diode D1 is connected with the over-temperature protection auxiliary unit 2, the anode of the second diode D2 is connected to the fuse 4, and the common node of the first diode D1 and the second diode D2 is connected to the common node of the charging relay 7 and the discharging relay 8.
In this embodiment, the control unit 6c is further connected to the upper computer 9.
Concretely, wherein one end of the shunt is connected with BAT-, S-, B _ S pins of an STM32F103 chip, the other end of the shunt is connected with S + pins, the current in the shunt acquisition circuit is transmitted to the control unit STM32F103 chip, so that the control unit monitors the current in the circuit, the anode of the first diode D1, the movable end of the charging relay is connected with BAT +, B + pins of the STM32F103 chip, the cathode of the second diode D2, the immovable end of the discharging relay is connected with one end of the fuse, the control end of the charging relay is connected with CH + and CH-pins of the control unit, the control end of the discharging relay is connected with DS +, DS-pins, and the other end of the fuse is connected with P + pins of the STM32F103 chip. RS485A and RS485B pin and the upper computer 9 of STM32F103 chip are connected, set up STM32F103 chip through the upper computer, and RS485RX, RS485TX, RS485COM pin can be connected with the debugging equipment and debugs.
Through the test, the lithium battery system and the lead-acid battery are compared as follows:
watch 1
The utility model discloses the connection of saying is the electricity and connects, simultaneously, the utility model relates to a concrete implementation of a lithium cell package for fire control emergency power source may involve practical software, but the software that uses all is the software that technical personnel in the field used most often to, and, not the scope that the patent application claim will protect.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.
Claims (5)
1. A lithium battery pack for a fire-fighting emergency power supply screen is characterized by comprising a lithium battery (1), an over-temperature protection auxiliary unit (2), a rectifier diode unit (3), a charging relay (7), a discharging relay (8), a fuse (4), a BMS battery management system (6) and a shunt (5), wherein the BMS battery management system (6) comprises a control unit (6c) and an information acquisition unit, the anode of the lithium battery (1) is connected with the rectifier diode unit (3) through the over-temperature protection auxiliary unit (2), the cathode of the lithium battery (1) is connected with the shunt (5), the information acquisition unit is respectively connected with the lithium battery (1) and the control unit (6c), and the control unit (6c) is also respectively connected with the lithium battery (1), the charging relay (7), the discharging relay (8) and the shunt (5), the charging relay (7) with the discharging relay (8) sets up in series, just charging relay (7) with the series link of discharging relay (8) with rectifier diode unit (3) are parallelly connected, rectifier diode unit (3) include two opposite current direction's first diode (D1) and second diode (D2), the negative pole of first diode (D1) and second diode (D2) is connected, the positive pole of first diode (D1) with excess temperature protection auxiliary unit (2) are connected, the positive pole of second diode (D2) with fuse (4) are connected, the common node of first diode (D1) and second diode (D2) with the common node of charging relay (7) and discharging relay (8) is connected.
2. The lithium battery pack for a fire emergency power supply screen according to claim 1, wherein the information acquisition unit comprises a voltage acquisition unit (6a) and a temperature acquisition unit (6 b).
3. The lithium battery pack for a fire emergency power supply screen according to claim 1, wherein the over-temperature protection auxiliary unit (2) comprises a temperature-controlled switch (TB), a shunt release (21) and an air switch (DB), the temperature-controlled switch (TB) is connected in series with a shunt coil (211) of the shunt release (21), and a series link of the temperature-controlled switch (TB) and the shunt coil (211) is connected in parallel with the battery (1), a release (212) of the shunt release (21) is connected in series with the air switch (DB), and a series link of the release (212) and the air switch (DB) is connected in series with the battery (1) and the rectifier diode unit (3).
4. The lithium battery pack for a fire-fighting emergency power supply screen according to claim 1, characterized in that the control unit (6c) is further connected with an upper computer (9).
5. A lithium battery pack for a fire-fighting emergency power supply screen according to claim 1, characterized in that the control unit (6c) is also provided with a commissioning port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023084861.2U CN214380173U (en) | 2020-12-20 | 2020-12-20 | Lithium battery pack for fire-fighting emergency power supply screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023084861.2U CN214380173U (en) | 2020-12-20 | 2020-12-20 | Lithium battery pack for fire-fighting emergency power supply screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214380173U true CN214380173U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023084861.2U Active CN214380173U (en) | 2020-12-20 | 2020-12-20 | Lithium battery pack for fire-fighting emergency power supply screen |
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| Country | Link |
|---|---|
| CN (1) | CN214380173U (en) |
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- 2020-12-20 CN CN202023084861.2U patent/CN214380173U/en active Active
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