CN216564620U - Emergency uninterrupted power supply circuit - Google Patents
Emergency uninterrupted power supply circuit Download PDFInfo
- Publication number
- CN216564620U CN216564620U CN202121416510.9U CN202121416510U CN216564620U CN 216564620 U CN216564620 U CN 216564620U CN 202121416510 U CN202121416510 U CN 202121416510U CN 216564620 U CN216564620 U CN 216564620U
- Authority
- CN
- China
- Prior art keywords
- emergency
- battery
- circuit
- power supply
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an emergency uninterrupted power supply circuit, which comprises a constant current charging circuit, a battery control protection circuit, an emergency battery and an automatic switching circuit which are connected with each other; the constant-current charging circuit takes the alternating current as input electric energy and stores the input electric energy as output in the emergency battery; the battery control protection circuit monitors voltages at two ends of the emergency battery cell and provides high-voltage protection and low-voltage alarm; the emergency battery and the electric energy storage device are used for providing electric energy for the emergency lighting lamp strip; the automatic conversion circuit controls the electric energy source of the electricity used in the emergency lamp strip, and simultaneously adjusts the electricity current used in the emergency lamp strip, so that the emergency lamp strip is safer and more stable in work. This scheme is compared in the AC input power supply circuit who does not possess emergency measure, makes the uninterrupted duty of emergency light area under the outage condition obtain stable assurance, simultaneously makes protection battery and regulation lamp area operating current, greatly reduced the potential safety hazard of circuit under emergency.
Description
Technical Field
The utility model relates to the field of industrial safety production, relates to the field of uninterruptible power supplies, and particularly relates to an emergency uninterruptible power supply circuit.
Background
In the operation places such as ship repair and building, the LED escape emergency lighting lamp strip for emergency escape is arranged in a closed space, an engine room escape channel and a ladder way, the power supply voltage of the lighting lamp strip is generally provided by an isolation step-down transformer, and under the conditions of fire, power failure and the like of the emergency circuit powered by a single power supply, the emergency lamp strip can be easily powered off, so that certain potential safety hazards exist.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a circuit which can supply power to an illumination emergency lamp stably, energy-saving and efficiently under the condition of power failure of an emergency battery, can automatically use the power supply when the power supply exists, charges the emergency battery, protects the battery, alarms the electric quantity to remind the replacement, and controls the current of the illumination lamp.
In order to achieve the purpose, the technical scheme of the utility model is to provide an emergency uninterrupted power supply circuit for energy-saving and stable power supply of an emergency lighting lamp strip, which is characterized by comprising a constant-current charging circuit, a battery control protection circuit, an emergency battery and an automatic switching circuit which are mutually connected;
the power supply input end of the constant current charging circuit is connected with the input end of an alternating current power supply, and the direct current voltage output end of the constant current charging circuit is connected with the input end of the battery control protection circuit;
the input end of the battery control protection circuit is a direct-current voltage output by the constant-current charging circuit, and the output end of the battery control protection circuit is connected with an emergency battery;
the emergency battery is connected with the battery control protection circuit and the automatic switching circuit;
and two input ends of the automatic conversion circuit are respectively connected with the alternating current input end and the emergency battery, and the output end of the automatic conversion circuit is connected with the power utilization system, namely the emergency lighting lamp strip.
Furthermore, the constant-current charging circuit rectifies and filters input alternating current and constant current into output direct current voltage, and the output direct current voltage is stable, and the current is constant to excite the emergency battery to charge; the constant-current charging circuit comprises a rectifier bridge D1, a first resistor R1, a first IC three-terminal voltage stabilization chip U1 and a first electrolytic capacitor C1; two ends of the input end of the rectifier bridge D1 are respectively connected with the positive and negative ends of the input end of an alternating current power supply, and the positive and negative ends of the output end of the rectifier bridge D1 are respectively connected with the direct current power supply input end of the first IC three-terminal voltage stabilizing chip U1 and the negative electrode of the emergency battery as a reference ground; the input end of the first IC three-terminal voltage stabilizing chip U1 is connected with the anode of the output end of the rectifier bridge D1, the output end of the first IC three-terminal voltage stabilizing chip U1 is connected with one end of a first resistor, and the ground end of the first IC three-terminal voltage stabilizing chip U1 is connected with the other end of the first resistor; the first resistor R1 is connected with the output end and the ground end of the first IC three-terminal voltage stabilizing chip U1; the anode of the first electrolytic capacitor C1 is connected with the input end of the first IC three-terminal voltage stabilizing chip U1, and the cathode of the first electrolytic capacitor C1 is connected with the reference ground.
Furthermore, the battery controls the protection circuit, the control circuit charges the emergency battery, the emergency battery is protected from being overcharged, the battery low-voltage alarm is provided, and the battery can be replaced in time; the battery control protection circuit comprises an N-channel MOS tube Q1, a second IC battery protection chip U2, a second resistor R2, a switch K2, a low-voltage alarm U3 and a buzzer B1; the N-channel MOS tube Q1 controls the on-off of a charging current path, the drain electrode of the N-channel MOS tube Q1 is connected with the ground end 2 of the first IC three-terminal voltage-stabilizing chip, the source electrode of the N-channel MOS tube Q1 is connected with the output end 3 of the second IC, and the grid electrode of the N-channel MOS tube is connected with one end R2 of the second resistor; one end of the second resistor R2 is connected with the grid electrode of the N-channel MOS tube Q1, and the other end of the second resistor R2 is connected with the end 1 of the second IC battery protection chip; the second IC battery protection chip U2 monitors the voltage of the emergency battery, controls the charging protection of the emergency battery by matching with a second resistor R2 and an N-channel MOS transistor Q1, and has an input end 1 connected with the second resistor, an output end 3 connected with one end of the switch, and a ground end connected with the negative electrode of the emergency battery; the switch K2 controls whether the power circuit uses an emergency battery or not, the circuit is disconnected to replace the battery, one end of the switch is connected with the output end 3 of the second IC battery protection chip U2, and the other end of the switch is connected with the anode of the emergency battery; low pressure alarm U3 monitors battery operating condition, carries out the low pressure warning, and when battery electric power was not enough 2Ah, low pressure alarm control buzzer B1 carried out audible alarm, reminds the electric quantity early warning, changes the battery, and low pressure alarm's input 1 and input 2 are connected respectively at emergent battery positive negative pole both ends, and output 3 and output 4 are connected the buzzer both ends.
Further, the emergency battery serves as energy storage equipment to store electric energy when alternating current input exists, and supplies power to the emergency lighting lamp strip when power is lost; the emergency battery is formed by connecting 10 ternary lithium batteries with certain capacity in series into a group and connecting four groups in parallel, the full-electricity voltage of the emergency battery is equal to the input alternating-current voltage, and the electric quantity of the emergency battery can be used by the lamp strip for 10-15 Ah.
Furthermore, the automatic switching circuit automatically switches the power source of the corresponding emergency light band, so as to ensure that the emergency light band continuously performs lighting work; the automatic switching circuit consists of two normally open and two normally closed relays K1 with alternating current input as working voltage and an LED driving module U4, the alternating current input is connected, the relays are attracted, the connected input alternating current supplies power to the emergency lamp strip, the input relay loses power when the power is lost, and the emergency battery supplies power to the emergency lamp strip; the control end both ends of relay K1 are connected with AC input both ends, and two normally open contacts are also connected with AC input both ends respectively, and two normally closed ports are connected with output 3, the ground terminal 2 of second IC battery protection chip U2, and the common port is connected with LED drive module U4's input, and emergency lighting lamp area is connected to LED drive module U4's output, the working current in control emergency lighting lamp area.
The utility model has the advantages and beneficial effects that:
1. the emergency uninterrupted power supply circuit is formed by connecting 4 parts of circuits, and is simple in structure and easy to maintain.
2. The emergency uninterrupted power supply circuit uses a constant-current charging circuit, and has the advantages of long service life, stable operation, safety, reliability, cleanness, environmental protection and the like.
3. This emergent uninterrupted power source circuit has set up battery protection and electric quantity warning, and the battery protection provides the safety guarantee for emergency battery's use, and the electric quantity is reported to the police and is let the staff more directly perceived to the power supply control of battery, is convenient for in time change the battery, has ensured the incessant use in emergency light area.
4. Because this meet an urgent need uninterrupted power source to emergency lighting lamp area power supply has possessed emergency battery circuit under the condition of losing power, can launch emergency battery automatically, makes the uninterruptibility of the work of emergency lighting lamp area obtain great promotion.
5. This emergent uninterrupted power source has configured LED drive module U4, can adjust the electric current in emergency lighting lamp area according to voltage is nimble, makes safety, the stability of the work in emergency lighting lamp area obtain huge promotion.
Drawings
Fig. 1 is a block diagram of an emergency ups circuitry of the present invention;
fig. 2 is a circuit diagram of an emergency uninterruptible power supply circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A system block diagram provided for an embodiment of the present invention, as shown in fig. 1, mainly includes a constant current charging circuit, a battery control protection circuit, an emergency battery, and an automatic switching circuit.
The emergency battery is used as energy storage equipment to store electric energy when alternating current input exists, and supplies power to the emergency lighting lamp strip when power is lost; when the alternating current input is 36V, the emergency battery is a 36V and 10.4Ah battery which is composed of 4-parallel 10-series 18650-unit lithium batteries with the capacity of 2600 mA.
The constant-current charging circuit is used for rectifying and filtering 36V input alternating current through a current bridge, and supplying power to an emergency battery through the output of a voltage stabilizing IC (integrated circuit) with constant current of 50V direct current and constant current of 1.25A; the 36V constant-current charging circuit comprises a rectifier bridge D1, a first IC three-terminal voltage stabilizing chip U1, a first resistor R1 and a first electrolytic capacitor C1; preferably, the first IC three-terminal voltage-stabilizing chip U1 adopts an LM317 chip, and the first resistor R1 is 1%, 50ppm and 1 ohm in resistance; the rectifier bridge D1 is used for rectifying and filtering input unstable 36V alternating current voltage which is sent to an input end through a transformer into stable direct current, an input end 1 and an input end 3 of the rectifier bridge D1 are respectively connected with two ends of a 36V alternating current input, an output end 2 of the rectifier bridge is connected with an input end 1 of a first IC three-end voltage stabilizing chip, and an output end 4 of the rectifier bridge D1 is connected with the cathode of an emergency battery; the first IC three-terminal voltage stabilizing chip U1 is a three-stage voltage stabilizing circuit integrated device and is used for stabilizing the direct-current voltage converted by the rectifier bridge at 50V and stabilizing the output current at 1.25A, the input end 1 of the first IC three-terminal voltage stabilizing chip U1 is connected with the output end 2 of the rectifier bridge, the output end 3 of the first IC three-terminal voltage stabilizing chip U1 is connected with one end of a first resistor R1, and the ground end 2 of the first IC three-terminal voltage stabilizing chip U1 is connected with the other end of a first resistor R1; the first resistor R1 is matched with the first IC three-terminal voltage stabilizing chip U1 to enable the charging current value to be 1.25A; and the anode of the first electrolytic capacitor C1 is connected with the input end 1 of the first IC three-terminal voltage stabilization chip, and the cathode of the first electrolytic capacitor C1 is connected with the cathode of the emergency battery and used for protecting the first IC three-terminal voltage stabilization chip U1.
The battery control protection circuit is used as a charging switch for controlling current to the emergency battery to protect the emergency battery from being overcharged, when any cell voltage in the emergency battery voltage exceeds a high-voltage threshold value of 4.2V, charging is finished, the battery is stopped to be continuously charged, and when the electric quantity of the battery is less than 2Ah, an alarm is sounded to remind a worker to replace the battery; the battery control protection circuit comprises an N-channel MOS tube Q1, a second IC battery protection chip U2, a low-voltage alarm U3 and a buzzer B1; the N-channel MOS tube Q1 controls the on-off of a charging current path, the drain electrode of the N-channel MOS tube Q1 is connected with the ground end 2 of the first IC three-terminal voltage stabilization chip, the source electrode of the N-channel MOS tube Q1 is connected with the output end 3 of the second IC battery protection chip, and the grid electrode of the N-channel MOS tube Q1 is connected with one end of the second resistor; one end of the second resistor R2 is connected with the grid of the N-channel MOS tube Q1, and the other end of the second resistor R2 is connected with the input end 1 of the second IC battery protection chip U2; the second IC battery protection chip U2, preferably a PT6010 lithium battery protection chip, monitors the voltage of the emergency battery, and cooperates with the second resistor R2 and the N-channel MOS transistor Q1 to control the charging protection of the emergency battery, the input terminal 1 of the second IC battery protection chip U2 is connected to the second resistor R2, the output terminal 3 of the second IC battery protection chip U2 is connected to one end of the switch K2, and the ground terminal 2 of the second IC battery protection chip U2 is connected to the negative electrode of the emergency battery; the switch K2 controls whether the power circuit uses an emergency battery or not, and disconnects the circuit to replace the battery; the switch K2 is closed, the emergency battery is started, the emergency battery can automatically switch the working state according to the alternating current input and the self condition, the switch K2 is opened, the emergency battery is not started, and the emergency battery can be replaced; one end of the switch is connected with the output end of the second IC battery protection chip U2, and the other end of the switch is connected with the anode of the emergency battery; low pressure alarm U3 monitors battery operating condition, carries out the low pressure warning, and when battery electric power was not enough 2Ah, low pressure alarm U3 control buzzer B1 carried out audible alarm, reminds the electric quantity early warning, changes the battery, and low pressure alarm U3's input 1 and ground are connected respectively at emergent battery positive negative pole both ends, and the buzzer both ends are connected to low pressure alarm U3's output 3 and output 4.
The automatic switching circuit automatically switches the power source of the emergency lighting lamp strip to ensure that the emergency lighting lamp strip uninterruptedly performs lighting work; the automatic conversion circuit consists of a 36V alternating current two normally open two normally closed intermediate relay K1 and an LED driving module U4, an alternating current 36V input is connected, the relay is attracted, the connected 36V supplies power to an emergency lamp strip, an electric appliance K1 loses power after the power failure, an emergency battery supplies power to the emergency lamp strip, two ends of a control end of a relay K1 are connected with two ends of a 36V alternating current input end, two normally open contacts are also connected with two ends of the alternating current input end respectively, and two normally closed ports are connected with an output end 3 and a ground end 2 of a second IC battery protection chip; the input end of the LED driving module U4 is connected with the common end of the relay K1, the output end of the LED driving module U4 is connected with an emergency lighting lamp strip, and the LED driving module U4 adjusts the current supplied to the lighting emergency lamp strip according to the received voltage, so that the emergency lamp strip works in a safe and energy-saving state.
The working principle of the emergency uninterrupted power supply circuit is as follows: closing the switch K2, using the emergency power supply; when an alternating current input exists, the relay K1 is used for attracting, the alternating current input is connected with the LED driving module U4 and the emergency lighting lamp strip in parallel, the emergency lighting lamp strip is directly powered by the alternating current input, and the working current of the emergency lighting lamp strip is given out by the LED driving module U4 according to the alternating current input voltage; at the same time, the power circuit charges the emergency battery, the constant-current charging circuit converts alternating current input into stable direct current, the second IC battery protection chip U2 monitors the battery voltage, the battery voltage is below a high-voltage threshold value, the N-channel MOS tube Q1 conducts current to normally charge the emergency battery, the second IC battery protection chip U2 detects that the battery voltage reaches the threshold value, and the N-channel MOS tube Q1 cuts off the current to stop charging the emergency battery; alternating current input does not exist, the relay K2 is separated, the emergency battery is connected with the LED drive module U4, the low-voltage alarm U3 and the emergency lighting lamp strip in parallel, the emergency lighting lamp strip is powered by the emergency battery, the working current of the emergency lighting lamp strip is given by the LED drive module U4 according to alternating current input voltage, when the electric quantity of the emergency battery is less than 2Ah, the low-voltage alarm U3 controls the buzzer B1 to alarm at low voltage, and the disconnecting switch K2 is reminded to replace the battery.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (5)
1. An emergency uninterrupted power supply circuit is used for energy-saving and stable power supply of an emergency lighting lamp strip and is characterized by comprising a constant-current charging circuit, a battery control protection circuit, an emergency battery and an automatic conversion circuit which are connected with one another;
the power supply input end of the constant current charging circuit is connected with the input end of an alternating current power supply, and the direct current voltage output end of the constant current charging circuit is connected with the input end of the battery control protection circuit;
the input end of the battery control protection circuit is a direct-current voltage output by the constant-current charging circuit, and the output end of the battery control protection circuit is connected with an emergency battery;
the emergency battery is connected with the battery control protection circuit and the automatic switching circuit;
one of two input ends of the automatic conversion circuit is connected with the alternating current input end, the other input end of the automatic conversion circuit is connected with the emergency battery, and the output end of the automatic conversion circuit is connected with the power utilization system, namely the emergency lighting lamp strip.
2. The emergency uninterruptible power supply circuit of claim 1, wherein the constant current charging circuit comprises a rectifier bridge (D1), a first resistor (R1), a first IC three-terminal voltage regulation chip (U1), and a first electrolytic capacitor (C1); the two ends of the input end of the rectifier bridge (D1) are respectively connected with the positive and negative ends of the input end of an alternating current power supply, and the positive and negative ends of the output end of the rectifier bridge (D1) are respectively connected with the direct current power supply input end of the first IC three-terminal voltage stabilizing chip (U1) and the negative electrode of the emergency battery as a reference ground; the input end of the first IC three-terminal voltage stabilizing chip (U1) is connected with the positive electrode of the output end of the rectifier bridge (D1), the output end of the first IC three-terminal voltage stabilizing chip (U1) is connected with one end of a first resistor, and the ground end of the first IC three-terminal voltage stabilizing chip (U1) is connected with the other end of the first resistor; the first resistor (R1) is connected with the output end and the ground end of the first IC three-terminal voltage stabilizing chip (U1); the anode of the first electrolytic capacitor (C1) is connected with the input end of the first IC three-terminal voltage-stabilizing chip (U1), and the cathode of the first electrolytic capacitor (C1) is connected with the reference ground.
3. The emergency uninterruptible power supply circuit of claim 1, wherein the battery control protection circuit comprises an N-channel MOS transistor (Q1), a second resistor (R2), a second IC battery protection chip (U2), a switch (K2), a low voltage alarm (U3), and a buzzer (B1); the source electrode of the N-channel MOS tube (Q1) is connected with the output end of the second IC battery protection chip (U2), the grid electrode of the N-channel MOS tube (Q1) is connected with one end of the second resistor, and the drain electrode of the N-channel MOS tube (Q1) is connected with the ground end of the first IC three-end voltage stabilization chip (U1); one end of the second resistor (R2) is connected with the grid electrode of the N-channel MOS tube (Q1), and the other end of the second resistor (R2) is connected with the input end of a second IC battery protection chip (U2); the input end of the second IC battery protection chip (U2) is connected with the second resistor, the ground end of the second IC battery protection chip (U2) is connected with the common ground, and the output end of the second IC battery protection chip (U2) is connected with the source electrode of the N-channel MOS tube (Q1); one end of the switch (K2) is connected with the output end of the second IC battery protection chip (U2), and the other end of the switch (K2) is connected with the anode of the emergency battery; the voltage input end and the ground end of the low-voltage alarm (U3) are respectively connected to the positive and negative ends of the emergency battery, and the two ends of the output end of the low-voltage alarm (U3) are connected to the two ends of the power supply of the buzzer (B1).
4. The emergency uninterruptible power supply circuit of claim 1, wherein the emergency battery is composed of 1 group of 10 lithium batteries connected in series and four groups connected in parallel.
5. The emergency uninterruptible power supply circuit according to claim 1, wherein the automatic switching circuit comprises two normally open and normally closed relays (K1) and an LED driving module (U4) which input ac as a working voltage; the two normally-open ports and the control port of the relay (K1) are connected with two input alternating current ends, the two normally-closed ports are connected with the output end and the ground end of the second IC battery protection chip (U2), and the common end of the relay (K1) is connected with the voltage input end of the LED driving module (U4); the voltage input end of the LED driving module (U4) is connected with the common end of the relay, and the voltage output end of the LED driving module (U4) is connected with the emergency lighting lamp strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121416510.9U CN216564620U (en) | 2021-06-24 | 2021-06-24 | Emergency uninterrupted power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121416510.9U CN216564620U (en) | 2021-06-24 | 2021-06-24 | Emergency uninterrupted power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216564620U true CN216564620U (en) | 2022-05-17 |
Family
ID=81536573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121416510.9U Active CN216564620U (en) | 2021-06-24 | 2021-06-24 | Emergency uninterrupted power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216564620U (en) |
-
2021
- 2021-06-24 CN CN202121416510.9U patent/CN216564620U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009030101A1 (en) | Online passive maintaining device for large capacity sealed lead-acid accumulator | |
| CN202931014U (en) | Special-purpose emergency power supply system for intelligent energy-saving fire-fighting emergency lamp | |
| KR100715282B1 (en) | Charging control apparatus of battery for emergency lamp | |
| CN207869453U (en) | A kind of driving circuit of illumination and dual-purpose LED light of meeting an urgent need | |
| CN206181430U (en) | Emergent LED lamp of intelligence | |
| CN216564620U (en) | Emergency uninterrupted power supply circuit | |
| CN202094694U (en) | Automatic emergency conversion device for power supply of LED lamp set | |
| CN102820695A (en) | Emergency power supply system special for intelligent energy-saving fire control emergency lamp | |
| CN104882936A (en) | Communication energy storage power supply system | |
| CN109638955B (en) | Power supply circuit | |
| CN201081132Y (en) | Fire-fighting emergency marker lamp | |
| CN203690903U (en) | Battery under-voltage protection circuit | |
| CN113489131A (en) | Emergency uninterrupted power supply circuit | |
| KR100960981B1 (en) | Battery Control Unit For Extraordinary Lighting Lamp | |
| CN211860603U (en) | Lamp emergency module | |
| CN211790900U (en) | Emergency load circuit and device capable of being turned off and charged | |
| CN204761067U (en) | Communication energy storage power supply system | |
| CN2899371Y (en) | Explosion-proof signal light | |
| CN203800634U (en) | Mining flame-proof and intrinsically safe type uninterrupted DC stabilized power supply | |
| CN210297344U (en) | Portable emergency maintenance power supply | |
| CN107241834B (en) | A kind of small size LED emergency light circuit | |
| CN206180660U (en) | Intelligence LED emergency driving circuit | |
| CN212518471U (en) | Lead-acid battery charger | |
| CN2647013Y (en) | A single live wire fluorescent lamp with emergency handling function | |
| CN208955739U (en) | A kind of uninterruption power source device for energy-storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |