CN218243338U - Emergency power supply equipment - Google Patents
Emergency power supply equipment Download PDFInfo
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- CN218243338U CN218243338U CN202221265480.0U CN202221265480U CN218243338U CN 218243338 U CN218243338 U CN 218243338U CN 202221265480 U CN202221265480 U CN 202221265480U CN 218243338 U CN218243338 U CN 218243338U
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Abstract
The utility model relates to an emergency power supply equipment, this emergency power supply equipment is including the AC/DC module, the management module of charging, the battery that connect gradually, and be used for right the direct current voltage of AC/DC module output or the direct current voltage of battery output converts and for the DC/DC module of the back level equipment power supply, still includes: a switch connected to the AC mains supply; a detection module for detecting the state of the switch; and the control module is connected with the detection module, the AC/DC module and the battery and is used for controlling the starting or stopping of the DC/DC module according to the state of the switch and the output voltage of the AC/DC module. Implement the technical scheme of the utility model, the on-off control function of emergency power supply equipment has not only been realized, moreover, the demand that the battery normally charges when having satisfied the normal commercial power of interchange to and realized emergency power supply equipment automatic switch-over to the function of emergency power supply state when exchanging the commercial power unusual.
Description
Technical Field
The utility model relates to an electron device field especially relates to an emergency power supply equipment.
Background
The common emergency equipment adopts an AC/DC power supply to charge the battery and also supplies power to the rear pole DC/DC boosting module. When the alternating current commercial power is changed into stable direct current through the AC/DC module, the alternating current commercial power is divided into two paths, wherein one path charges the battery through the charging management module, and the other path supplies power to the load module through the DC/DC boosting module. When the alternating current commercial power is abnormal, the battery is automatically switched to a battery emergency power supply state, and the battery supplies power to the load module through the DC/DC boosting module.
In practice it has been found that some emergency devices, such as emergency lighting, require the addition of a switch control function. If a switch is added at the front end of the AC/DC module, when the load module needs to work, the power supply of the load module can be switched on through the switch, and when the load module does not need to work, the power supply of the load module can be switched off through the switch, so that although the switch control function is realized, the requirement of normal charging of a battery when the alternating current commercial power is normal can not be met, and the function of automatically switching to an emergency power supply state when the alternating current commercial power is abnormal can not be realized.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect that prior art exists, provide an emergency power supply equipment.
The utility model provides a technical scheme that its technical problem adopted is: an emergency power supply device is constructed, which comprises an AC/DC module, a charging management module, a battery, and a DC/DC module for converting the DC voltage output by the AC/DC module or the DC voltage output by the battery and supplying power to a subsequent device, wherein the AC/DC module, the charging management module, the battery, and the DC/DC module are connected in sequence, and the emergency power supply device further comprises:
a switch connected to the AC mains supply;
a detection module for detecting the state of the switch;
and the control module is connected with the detection module, the AC/DC module and the battery and is used for controlling the starting or stopping of the DC/DC module according to the state of the switch and the output voltage of the AC/DC module.
Preferably, the detection module comprises: the input part of detection resistance, isolation opto-coupler, just detection resistance's first end is passed through the live wire of interchange commercial power is connected to the switch, detection resistance's second end is connected keep apart the positive pole of the input part of opto-coupler, keep apart the negative pole ground connection of the input part of opto-coupler.
Preferably, the control module includes an output part of an isolation optocoupler, a capacitor, a first switch tube, a second switch tube, a first resistor and a second resistor, wherein a collector of the output part of the isolation optocoupler is connected to a positive output end of the AC/DC module, an emitter of the output part of the isolation optocoupler is connected to the ground of the capacitor, a control end of the first switch tube is connected to the emitter of the output part of the isolation optocoupler, a first end of the first switch tube is connected to the positive output end of the AC/DC module through the first resistor, a control end of the second switch tube is connected to the first end of the first switch tube, a first end of the second switch tube is connected to the second resistor, a second end of the first switch tube and a second end of the second switch tube are respectively connected to the ground, and a first end of the second switch tube is further connected to an enabling end of the DC/DC module.
Preferably, the switch circuit further comprises a third resistor and a fourth resistor, wherein the third resistor is connected between an emitter of an output part of the isolation optocoupler and a control end of the first switch tube, and the fourth resistor is connected between the control end of the first switch tube and ground.
Preferably, the first switch tube and the second switch tube are triodes respectively.
Preferably, the isolation optocoupler is a model PC817C optocoupler.
Preferably, the AC/DC module includes an AC input circuit, a filter rectification circuit, a DC/DC flyback circuit, and a DC output circuit, which are connected in sequence.
Preferably, the DC/DC module includes a BOOST chip.
The utility model provides an among the technical scheme, switch is inserted in the another way of exchanging the commercial power, and detect the state of this switch through detection module, moreover, control module controls the start-up or the stop of DC/DC module according to the state of the switch that detects and the output voltage of AC/DC module, consequently, emergency power source equipment's on-off control function has not only been realized, and, the demand that the battery normally charges when exchanging the commercial power is normal has been satisfied, and the function of emergency power source equipment automatic switch-over to the emergency power supply state when exchanging the commercial power unusual has been realized. In addition, the emergency power supply equipment has the advantages of simple scheme, low cost and high reliability.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work. In the drawings:
fig. 1 is a logic structure diagram of a first embodiment of the emergency power supply apparatus of the present invention;
fig. 2 is a circuit diagram of a second embodiment of the emergency power supply device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is a logic structure diagram of an embodiment of the emergency power supply device of the present invention, the emergency power supply device of this embodiment includes an AC/DC module 11, a DC/DC module 12, a charging management module 13, and a battery 14, wherein the AC/DC module 11 is used to convert an input AC mains supply into a DC voltage; the charging management module 13 is used for processing the direct-current voltage output by the AC/DC module 11 and charging the battery 14; the DC/DC module 12 is configured to convert a DC voltage output by the AC/DC module 11 and supply power to a subsequent device when the AC utility power is normal, and convert a DC voltage output by the battery 14 and supply power to a subsequent device when the AC utility power is abnormal. In addition, the emergency power supply device further comprises a switch 15, a detection module 16 and a control module 17, wherein the switch 15 is connected to the alternating current mains supply and is used for receiving a switch signal input by a user; the detection module 16 is used for detecting the state of the switch 15; the control module 17 is connected to the detection module 16, the AC/DC module 11 and the battery 14, and is used for controlling the start or stop of the DC/DC module 12 according to the state of the switch 15 and the output voltage of the AC/DC module 11.
According to the technical scheme of the embodiment, the switch is connected to the other path of the alternating current mains supply, the state of the switch is detected through the detection module, and the control module controls the start or stop of the DC/DC module according to the detected state of the switch and the output voltage of the AC/DC module, so that the switch control function of the emergency power supply device is realized, the requirement of normal charging of the battery when the alternating current mains supply is normal is met, and the function of automatic conversion of the emergency power supply device to the emergency power supply state when the alternating current mains supply is abnormal is realized. In addition, the emergency power supply equipment of the embodiment has the advantages of simple scheme, low cost and high reliability.
Further, the AC/DC module 11 may include an AC input circuit, a filter rectification circuit (e.g., an EMI filter rectification circuit), a DC/DC flyback circuit, and a DC output circuit, which are connected in sequence. In this embodiment, the live line voltage of the AC mains supply is divided into two branches, one of which is connected to the AC mains supply through the AC input circuit, and after passing through the filter and rectifier circuit, the AC mains supply is converted into a DC power, and then the DC power is converted into a stable DC voltage through the DC/DC flyback circuit. Then, the power supply is divided into two paths, wherein one path supplies power to the charging management module, and the other path supplies power to the DC/DC module. When the alternating current commercial power is abnormal, the battery inputs the power to the DC/DC module. In addition, the other path of the live wire of the alternating current commercial power is connected in through a switch, and a switch instruction input by a user is transmitted to the control module through the detection module to control the starting or stopping of the DC/DC module.
Fig. 2 is a circuit diagram of an embodiment of the emergency power supply apparatus of the present invention, which includes a switch SW1-a, a detection module 16, a control module 17 and a DC/DC module, and it should be understood that other modules, such as an AC/DC module, a charging management module, and a battery, are not shown.
In this embodiment, the detection module 16 includes input parts U2-B of a detection resistor and an isolation optocoupler, where the detection resistor includes resistors R38, R29, R41, R32, R47, and R34, for example, the resistors R38, R29, R41, R32, R47, and R34 are all resistors with a resistance of 47K ohms, and the resistors R38 and R29 are connected in parallel, the resistors R41 and R32 are connected in parallel, the resistors R47 and R34 are connected in parallel, and the three groups of resistors connected in parallel are connected in series to form a detection resistor, and the detection resistor functions as a current limiting. The isolation optocoupler is, for example, a model PC817C optocoupler. Moreover, the first end of the detection resistor is connected with a live wire of an alternating current mains supply through a switch SW1-A, the second end of the detection resistor is connected with the anode of an input part U2-B of the isolation optocoupler, and the cathode of the input part U2-B of the isolation optocoupler is grounded.
In this embodiment, the DC/DC module includes a BOOST chip U1, for example, a chip with model number SY7701FHC is selected.
In this embodiment, the control module 17 includes an output portion U2-a of the isolation optocoupler, a capacitor C12, a first switch Q4, a second switch Q3, a first resistor R48, a second resistor R11, a third resistor R49, and a fourth resistor R50, and the first switch Q4 and the second switch Q3 of this embodiment are both triodes, for example, a triode of type MMBT4401LT 1. Wherein, the collector of the output part U2-A of the isolation optocoupler is connected with the positive output end (BBB) of the AC/DC module, for example, the positive output end of the filter rectifying circuit in the AC/DC module can be connected. The emitter of the output part U2-A of the isolation optocoupler is grounded through a capacitor C12, and the capacitor C12 is a filter capacitor, for example, a capacitor with an optional capacitance value of 104/50V. The third resistor R49 is connected between the emitter of the output part U2-B of the isolation optocoupler and the base of the first switch tube Q4, the fourth resistor R50 is connected between the base of the first switch tube Q4 and the ground, and the third resistor R49 and the fourth resistor R50 form a voltage division network, for example, a resistor with the selectable resistance value of 20K ohms. The collector of the first switch tube Q4 is connected to the positive output end (BBB) of the AC/DC module through a first resistor R48, and the first resistor R48 plays a role of current limiting, for example, a resistor with a resistance of 20K ohms may be selected. The base electrode of the second switch tube Q3 is connected with the collector electrode of the first switch tube Q4, the collector electrode of the second switch tube Q3 is connected with the positive end (18V) of the battery through the second resistor R11, the emitting electrode of the first switch tube Q4 and the emitting electrode of the second switch tube Q3 are respectively grounded, and the collector electrode of the second switch tube Q3 is further connected with the enabling end (pin 1) of the BOOST chip U1.
With regard to the above-described embodiments, it should also be noted that,
the working principle of the emergency power supply device of this embodiment is explained below:
when an alternating current mains supply is input, a direct current voltage is provided at the BBB end, for example, the direct current voltage is 5-15V, and the direct current voltage can be provided for the work of the isolation optocoupler, the first switch tube Q4 and the second switch tube Q3. If the switch SW1-A is closed, the input part U2-B of the isolation optocoupler is switched on, a current signal is converted into an optical signal and transmitted to the output part U2-A of the optocoupler, voltage is generated at two ends of the capacitor C12, so that the first switch tube Q4 is switched on, the second switch tube Q3 is switched off, the enabling end (pin 1) of the BOOST chip U1 is at a high level, and the BOOST chip U1 is started to work, so that power is supplied to a rear-stage device. If the switch SW1-A is disconnected, the input part U2-B of the isolation optocoupler is not conducted, the voltage at the two ends of the capacitor C12 is zero, so that the first switch tube Q4 is cut off, the second switch tube Q3 is conducted, the enable end (pin 1) of the BOOST chip U1 is at a low level, and the BOOST chip U1 stops working.
When no alternating current commercial power is input, no direct current voltage exists at the BBB end, the input part of the isolation optocoupler is not switched on regardless of the state of the switch SW1-A, the first switch tube Q4 is cut off, the second switch tube Q3 is also cut off, the enable end (pin 1) of the BOOST chip U1 is at a high level, and the BOOST chip U1 is started to work, so that power is supplied to the subsequent equipment. Therefore, the emergency power supply state can be automatically switched to no matter what state the switch SW1-A is in when the alternating current commercial power is not available.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any tampering, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. An emergency power supply device, including the AC/DC module, the charge management module, the battery that connect gradually, and be used for to the DC voltage of AC/DC module output or the DC voltage of battery output carries out the conversion and for the DC/DC module of the equipment power supply of the back level, its characterized in that still includes:
a switch connected with AC commercial power;
a detection module for detecting the state of the switch;
and the control module is connected with the detection module, the AC/DC module and the battery and is used for controlling the starting or stopping of the DC/DC module according to the state of the switch and the output voltage of the AC/DC module.
2. The emergency power supply apparatus of claim 1, wherein the detection module comprises: the detection device comprises a detection resistor, an input part (U2-B) of an isolation optocoupler, a live wire of an alternating current mains supply is connected with the first end of the detection resistor through a switch, a second end of the detection resistor is connected with a positive electrode of the input part (U2-B) of the isolation optocoupler, and a negative electrode of the input part (U2-B) of the isolation optocoupler is grounded.
3. Emergency power supply apparatus according to claim 2, wherein the control module comprises an output section (U2-a) of an isolating optocoupler, a capacitor (C12), a first switch tube (Q4), a second switch tube (Q3), a first resistor (R48) and a second resistor (R11), wherein a collector of the output section (U2-a) of the isolating optocoupler is connected to the positive output of the AC/DC module, an emitter of the output section (U2-a) of the isolating optocoupler is grounded via the capacitor (C12), a control end of the first switch tube (Q4) is connected to the emitter of the output section (U2-a) of the isolating optocoupler, a first end of the first switch tube (Q4) is connected to the positive output of the AC/DC module via the first resistor (R48), a control end of the second switch tube (Q3) is connected to a first end of the first switch tube (Q4), a first end of the second switch tube (Q3) is connected to the second end of the battery via the second resistor (R11), and a second end of the second switch tube (Q3) is connected to the second switch tube (Q3) and a second end of the DC module is connected to the second switch tube (Q3) and the second switch tube.
4. Emergency power supply device according to claim 3, characterized by a third resistor (R49) and a fourth resistor (R50), wherein the third resistor (R49) is connected between the emitter of the output section (U2-A) of the isolating optocoupler and the control terminal of the first switching tube (Q4) and the fourth resistor (R50) is connected between the control terminal of the first switching tube (Q4) and ground.
5. The emergency power supply apparatus according to claim 3, wherein the first switching tube (Q4) and the second switching tube (Q3) are transistors, respectively.
6. The emergency power supply apparatus of claim 3, wherein the isolating optocoupler is a model PC817C optocoupler.
7. The emergency power supply device of claim 1, wherein the AC/DC module comprises an AC input circuit, a filter rectification circuit, a DC/DC flyback circuit, and a DC output circuit, which are connected in sequence.
8. The emergency power supply apparatus of claim 1, wherein the DC/DC module comprises a BOOST chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221265480.0U CN218243338U (en) | 2022-05-24 | 2022-05-24 | Emergency power supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221265480.0U CN218243338U (en) | 2022-05-24 | 2022-05-24 | Emergency power supply equipment |
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| Publication Number | Publication Date |
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| CN218243338U true CN218243338U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221265480.0U Active CN218243338U (en) | 2022-05-24 | 2022-05-24 | Emergency power supply equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116247796A (en) * | 2023-03-02 | 2023-06-09 | 深圳市景欣泰家居用品有限公司 | Circuit system of dual-mode blower and control method thereof |
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2022
- 2022-05-24 CN CN202221265480.0U patent/CN218243338U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116247796A (en) * | 2023-03-02 | 2023-06-09 | 深圳市景欣泰家居用品有限公司 | Circuit system of dual-mode blower and control method thereof |
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