CN210297344U - Portable emergency maintenance power supply - Google Patents
Portable emergency maintenance power supply Download PDFInfo
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- CN210297344U CN210297344U CN201921519742.XU CN201921519742U CN210297344U CN 210297344 U CN210297344 U CN 210297344U CN 201921519742 U CN201921519742 U CN 201921519742U CN 210297344 U CN210297344 U CN 210297344U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
The utility model discloses a portable emergency maintenance power supply, which comprises a lithium battery pack charging circuit, a lithium battery pack power supply circuit and a mains supply/oil engine power supply circuit, under the condition of the mains supply/oil engine, the mains supply/oil engine can directly supply power by alternating current and direct current to charge a lithium battery pack, or a silicon solar panel charges the lithium battery pack, and when no external power supply equipment is arranged, the lithium battery pack can divide the stored current into different voltage levels to be used by various loads; the utility model discloses a small, capacious, can charge, the power supply by multiple mode, can satisfy indoor, outdoor different user demands.
Description
Technical Field
The utility model belongs to the technical field of emergency power supply, a portable emergency maintenance power supply is related to.
Background
At present, due to the problems of outdoor power failure or household power failure, equipment, machinery and tools stop working, so that the normal life of people is influenced, the demand of people on emergency power supplies is gradually improved, and the application prospect of the emergency maintenance power supplies is wide; the emergency maintenance power supply is mainly applied to occasions such as emergency communication, power line repair, medical equipment, exploration surveying and mapping, military, fire fighting and disaster relief, outdoor environment detection and the like, and areas with wide power shortage and the like.
The emergency maintenance power supply is equivalent to a portable commercial power supply, solves the problem of emergency power utilization in the outdoor or power-off places, has direct-current output, can load direct-current equipment, can solve the inconvenience caused by power failure in families, and meets the power supply application in scenes such as field tourism, outdoor operation, emergency rescue and the like; but emergency maintenance power supply both will satisfy domestic and will satisfy outdoor use again, the degree of integration that needs emergency maintenance power supply is high, it is convenient to require to remove, light in weight and small, and domestic emergency power supply product requirement power is big, the energy storage electrical power generating system that capacious, all adopt the cabinet type or wall-hanging installation, it is bulky, weight is heavy (more than 100 kg), portable not convenient for carry, can't satisfy the user demand at outdoor operations, along with people correspond the improvement that the urgent power demand requires, large capacity, powerful portable emergency power supply product demand is more and more, the emergency power generating system of present outdoor use is capacious, and low power, many outdoor use equipment can't start.
Disclosure of Invention
In order to achieve the purpose, the utility model provides a portable emergency maintenance power supply, this power is small, light in weight, portable, and the capacious of power can satisfy indoor, outdoor power consumption demand, has two kinds of interfaces that charge of commercial power input and silicon generation input, under the condition of no commercial power, also can normal use, the power supply of multiple voltage in addition can satisfy user's different consumer demands.
The utility model adopts the technical scheme that the portable emergency maintenance power supply comprises a mains supply/oil engine input port, the mains supply/oil engine input port is respectively connected with the input end of an EMI module and a normally open contact of a relay d, the output end of the EMI module is connected with the input end of a rectification filter module, the output end of the rectification filter module is connected with the input end of a DC/DC module c, the output end of the DC/DC module c is sequentially connected with a charging module and the input end of a lithium battery pack, and the input end of the charging module is also connected with a silicon transmission input port;
the output end of the rectification filter module is also respectively connected with the input ends of a DC/DC module a and a DC/DC module b, the DC/DC module a and the DC/DC module b are respectively connected with one input end of a rectifier bridge c and a coil of a relay d after being connected in parallel, two output ends of the rectifier bridge c are respectively connected with a 24V direct current output port a and a 24V direct current output port b, and a common contact of the relay d is connected with an alternating current output port;
the output end of the lithium battery pack is connected with one end of a relay a, the other end of the relay a is respectively connected with the input ends of an inverter module and a charger baby module, the charger baby module outputs five paths of voltages which are respectively DC28V, DC16.8V, DC12V, DC9.5V and DC5V, and the output end of the inverter module is connected with a normally closed contact of a relay d;
the relay a is further connected with the relay b and the relay c in series, the relay b is connected with the input end of the rectifier bridge a, the output end of the rectifier bridge a is connected with the input end of the rectifier bridge b, the input end of the rectifier bridge b is further connected with one contact of the relay c, and the other contact of the relay c is connected with the other input end of the rectifier bridge c after being connected with the output end of the rectifier bridge b in series.
Further, the output of the lithium battery pack is connected with a lithium battery pack voltage detection circuit, the output of the lithium battery pack voltage detection circuit is respectively connected with coils of a relay a, a relay b and a relay c, the output of the lithium battery pack is connected with a normally open contact of the relay a, and a common contact of the relay a is respectively connected with the input of an inverter module and the input of a charger module;
the utility model discloses a rectifier bridge, relay a, relay b, input, rectifier bridge b, relay a's common contact still establishes ties relay b's normally closed contact, relay b's common contact is connected with relay c's normally closed contact, relay b's normally closed contact still connects rectifier bridge a's input, rectifier bridge a's output is connected rectifier bridge b's input, rectifier bridge b's input still is connected with relay c's normally closed contact, rectifier bridge b's output and relay c's common contact establish ties the back and connect rectifier bridge c's an input.
Further, a control circuit is arranged between the output end of the lithium battery pack voltage detection circuit and the relay, the control circuit comprises a resistor R1, a resistor R2 and a transistor T1, one end of the resistor R1 is connected with the output end of the lithium battery pack voltage detection circuit, the other end of the resistor R1 is connected with the base electrode of the transistor T1, the collector electrode of the transistor T1 is connected with the coil of the relay, the emitter electrode of the transistor T1 is grounded, one end of the resistor R2 is connected with the base electrode of the transistor T1, and the other end of the resistor R2 is connected with the emitter electrode of the transistor T1; and a diode D1 is connected in parallel at two ends of the relay coil, and the anode of the diode D1 is connected with the collector of the transistor T1.
Furthermore, the input port of the mains supply/oil engine is also connected with an AC overvoltage and undervoltage indicating circuit.
Furthermore, the lithium battery pack is connected with a battery under-voltage indication circuit, an alarm circuit and an under-voltage turn-off circuit.
Further, still be equipped with liquid crystal collection module in the portable emergency maintenance power supply, liquid crystal collection module is connected with silicon power generation input port, lithium cell group, interchange output port, 24V direct current output port and the precious module of charging respectively, 24V direct current output port includes 24V direct current output port an and 24V direct current output port b.
Further, the 24V dc output port a and the 24V dc output port b are both connected to a 24V output overload indicating circuit.
Further, the model of the rectifier bridge is STPS160H100 TV.
The utility model has the advantages that: 1. the utility model has small volume, light weight, high integration degree and convenient carrying; 2. the utility model has large capacity and high power, and can meet the indoor and outdoor power consumption requirements; 3. the utility model can input commercial power and/or solar silicon power, can work normally without commercial power, can output direct current and alternating current with different voltages, and can be used for supplying power for different electric equipment; 4. the utility model discloses can supply the load power consumption of wide voltage range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a block diagram of the liquid crystal module of the present invention.
Fig. 3 is a contact connection block diagram of the relay d of the present invention.
Fig. 4 is a dc output block diagram of the lithium battery pack of the present invention.
Fig. 5 is a control schematic diagram of the voltage detection circuit of the lithium battery pack of the present invention.
In the figure, 1, a mains supply/oil engine input port, 2, an EMI module, 3, a rectification filter module, 4, a DC/DC module c, 5, a charging module, 6, a lithium battery pack, 7, a silicon power input port, 8, a relay a, 9, a relay b, 10, a relay c, 11, a rectifier bridge a, 12, a rectifier bridge b, 13, a rectifier bridge c, 14.24V direct current output port a, 15.24V direct current output port b, 16, an inverter module, 17, a relay d, 18, an alternating current output port, 19, a charger module, 20, a DC/DC module a, 21, a DC/DC module b, 22, an AC over-under voltage indication circuit, 23.24V output overload indication circuit, 24 under voltage battery indication, alarm circuit, under voltage turn-off circuit, 25, a liquid crystal acquisition module and 26, lithium battery pack voltage detection circuit.
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.
The portable emergency maintenance power supply structure is shown in fig. 1 and comprises a lithium battery pack charging circuit, a lithium battery pack power supply circuit and a mains supply/oil engine power supply circuit; the two groups of lithium battery pack charging circuits are respectively a mains supply/oil engine charging circuit and a silicon generator charging circuit, the mains supply/oil engine charging circuit comprises a mains supply/oil engine input port 1, the mains supply oil engine input port 1 is connected with one end of a rectifying and filtering module 3 after being connected with an EMI module 2 in series, the other end of the rectifying and filtering module 3 is connected with the input of a DC/DC module c4, and the output of the DC/DC module c4 is sequentially connected with a charging module 5 and a lithium battery pack 6 in series; the silicon power generation charging circuit comprises a silicon power generation input port 7, and the silicon power generation input port 7 is sequentially connected with the charging module 5 and the lithium battery pack 6 in series.
The lithium battery pack power supply circuit comprises a 24V direct current output circuit, an alternating current output circuit and five voltage output circuits, wherein the 24V direct current output circuit comprises a lithium battery pack 6, the lithium battery pack 6 is connected with one end of a relay a8, the other end of the relay a8 is sequentially connected with a relay b9, a relay c10 and a rectifier bridge c13 in series, a relay b9 is connected with the input end of a rectifier bridge a11, the output end of a rectifier bridge a11 is connected with the input end of a rectifier bridge b12, the input end of a rectifier bridge b12 is connected with one contact of a relay c10, the output end of the rectifier bridge b12 is connected with one input end of a rectifier bridge c13 after being connected with the other contact of the relay c10, the output end of the rectifier bridge c13 is respectively connected with a 24V direct current output port a14 and a 24V direct current output port b15, and the 24V direct current output ports a14 and 15; the alternating current output circuit comprises a lithium battery pack 6, the output of the lithium battery pack 6 is sequentially connected with the input of the relay a8 and the input of the inversion module 16, and the output of the inversion module 16 is connected with the relay d17 and the alternating current output port 18 in series; the five-path voltage output current comprises a lithium battery pack 6, the output of the lithium battery pack 6 is sequentially connected with a relay a8 and the charger baby module 19, and the charger baby module 19 outputs five paths of voltage which are respectively DC28V, DC16.8V, DC12V, DC9.5V and DC 5V.
The lithium battery pack 6 is also connected with a lithium battery pack voltage detection circuit 26, the output end of the lithium battery pack voltage detection circuit 26 is respectively connected with a relay a8 and a relay b9, the two ends of a coil of the relay c10 are connected to supply power to the relay c10, the output end of the lithium battery pack 6 is connected with the normally open contact of the relay a8, the common contact of the relay a8 is respectively connected with the input end of the inverter module 16 and the input end of the charger bank module 19, the common contact of the relay a8 is further connected with the normally closed contact of the relay b9 in series, the common contact of the relay b9 is connected with the normally closed contact of the relay c10, the normally closed contact of the relay b9 is further connected with the input end of the rectifier bridge a11, the output end of the rectifier bridge a11 is connected with the input end of the rectifier bridge b12, the input end of the rectifier bridge b12 is further connected with the normally closed contact of the relay c10, and the output end of the rectifier bridge b 82.
The commercial power/oil engine power supply circuit comprises a direct current output circuit and an alternating current output circuit, the direct current output circuit comprises a commercial power/oil engine input port 1, the commercial power/oil engine input port 1 is connected with one end of an EMI module 2, the other end of the EMI module 2 is connected with one end of a rectifying and filtering module 3, the other end of the rectifying and filtering module 3 is respectively connected with the input ends of a DC/DC module a20 and a DC/DC module b21, a DC/DC module a20 is connected with a DC/DC module b21 in parallel and then connected with the other input end of a rectifying bridge c13, two output ends of the rectifying bridge c13 are respectively connected with a 24V direct current output port a14 and a 24V direct current output port b15, and; the model of the rectifier bridge is STPS160H100TV, which belongs to Schottky barrier diodes, low-voltage and high-current can simultaneously pass through two paths of current without mutual influence, and a plurality of using ports can be provided for users.
The alternating current output circuit comprises a mains supply/oil engine input port 1, as shown in fig. 3, the mains supply/oil engine input port 1 is connected with a normally open contact of a relay d17, a common contact of a relay d17 is connected with an alternating current output port 18, a normally closed contact of a relay d17 is connected with an inverter module 16, the output ends of a DC/DC module a20 and a DC/DC module b21 are connected in series and then connected with two ends of a relay d17 coil, when the mains supply/oil engine inputs electricity, the relay d17 coil is electrified, the normally open contact is connected, the mains supply/oil engine inputs direct alternating current output, and otherwise, the lithium battery pack 6.
An AC over-voltage and under-voltage indicating circuit 22 is further arranged at the input port 1 of the commercial power/oil engine, and a warning lamp is turned on for early warning under the condition that the input of the commercial power/oil engine is abnormal; lithium cell group 6 is connected with battery under-voltage indication, warning circuit, under-voltage turn-off circuit 24, under the 6 under-voltage circumstances of lithium cell group, reports an emergency and asks for help or increased vigilance through the pilot lamp, audible alarm, turns off lithium cell group 6 at the battery group under-voltage point.
Referring to fig. 2, liquid crystal collection module 25 is connected with silicon power input port 7, lithium battery pack 6, ac output port 18, 24V dc output port and power bank module 19 respectively, 24V dc output port includes 24V dc output port a14 and 24V dc output port b15, liquid crystal collection module 25 collects silicon power input voltage, lithium battery pack 6 voltage, ac output voltage, dc output voltage and the output voltage of each output port of power bank module 19, and displays through the liquid crystal display, and the user can know each output voltage in real time.
Under the condition of commercial power, after the commercial power is filtered by the EMI module 2 to remove electromagnetic interference, the commercial power is introduced into the rectifying and filtering module 3 to convert alternating current into direct current and filter fluctuation, the direct current obtained by rectifying and filtering is converted into voltage required by the lithium battery pack 6 through the DC/DC module c4, and the voltage is input into the lithium battery pack 6 to be stored; the direct current obtained by rectification and filtering can be subjected to voltage conversion through a DC/DC module a20 and a DC/DC module b21, and is directly subjected to 24V direct current output through a rectifier bridge c 13; after the DC/DC module a20 and the DC/DC module b21 supply power to the coil of the relay d17, the alternating current input by commercial power can be directly output by alternating current through the normally open contact closed by the relay d 17; when no commercial power is available, the commercial power input interface is connected with an oil engine for power supply, and the effect of the emergency maintenance power supply is the same as that of commercial power input; without mains supply and oil engine power supply, the silicon solar panel can utilize solar energy to supply power for the lithium battery pack 6.
When external power supply equipment of the emergency maintenance power supply cannot work, the lithium battery pack 6 outputs stored electric energy for supplying power, when alternating current power supply is carried out, the output voltage of the lithium battery pack 6 is converted into alternating current through the relay a8 and the inversion module 16, and the alternating current is input into the alternating current output port 18 through the normally closed contact of the relay d17 for alternating current output; when the direct current power supply is carried out, the direct current of the lithium battery pack 6 is output by 24V direct current through the relay a8, the relay b9, the relay c10, the rectifier bridge c13 and the like, the lithium battery pack 6 is also connected with the charger baby module 19 through the relay a8, and the charger baby module 19 converts the direct current voltage into five different voltage outputs, namely DC28V, DC16.8V, DC12V, DC9.5V and DC 5V; the utility model discloses when the outdoor power supply, can provide multiple charge mode and multiple voltage output, can satisfy different power supply, power consumption condition, make the outdoor operations more convenient.
The output voltage range value of the lithium battery pack 6 is 21.5V-29.2V, the circuit shown in FIG. 4 can adjust the output voltage of the lithium battery pack 6 to 21.5V-27V under the loading condition, and the circuit can be used by loads with wide voltage ranges, the output of the lithium battery pack 6 is stable, the power supply mode is various, and the voltage adaptation is wide; when the commercial power/oil engine is input, when the voltage output by the DC/DC module a20 and the DC/DC module b21 is less than 27V, the output voltage of the lithium battery pack 6 is directly output in an alternating current mode through the relay a8, the inverter module 16 and the relay d17, the normally closed contact of the relay a8 is not connected, and when the output voltage of the lithium battery pack 6 is lower than 21.5V, a battery loop is disconnected, so that the lithium battery pack 6 is prevented from being over-discharged.
Referring to fig. 4, when the lithium battery pack 6 outputs direct current, when the lithium battery pack voltage detection circuit 26 detects that the output voltage of the lithium battery pack 6 is greater than or equal to 21.5V, the lithium battery pack voltage detection circuit 26 acts on the coil of the relay a8 to close the normally open contact of the relay a8, and at the moment, the output voltage of the lithium battery pack 6 flows through the inverter module 16 and the charger baby module 19 through the relay a8 to provide alternating current output and output voltages of different levels for external loads.
When the direct-current voltage output by the lithium battery pack 6 is lower than 26V, the direct-current voltage is supplied by 24V direct current output by the relay b9, the relay c10 and the rectifier bridge c13, and the rectifier bridge a11 and the rectifier bridge b12 are short-circuited; when the lithium battery pack voltage detection circuit 26 detects that the output voltage of the lithium battery pack 6 is higher than 26V and smaller than 27V, the lithium battery pack voltage detection circuit 26 acts on a coil of the relay b9 to close a normally open contact of the relay b9, normally open contacts of the relay a8 and the relay b9 are closed at the moment, and direct current output by the lithium battery pack 6 is connected with the rectifier bridge c13 through the normally open contact of the relay a8, the normally closed contacts of the rectifier bridge a11 and the relay c10 to output power; when the lithium battery pack voltage detection circuit 26 detects that the voltage of the lithium battery pack 6 is higher than 27V, the lithium battery pack voltage detection circuit 26 acts on coils of the relay b9 and the relay c10 respectively to enable normally open contacts of the relay b9 and the relay c10 to be attracted at the same time, and the direct-current voltage output by the lithium battery pack 6 outputs 24V direct-current voltage through the normally open contact of the relay a8, the rectifier bridge a11, the rectifier bridge b12 and the rectifier bridge c 13; the output voltage of the lithium battery pack 6 is detected by the lithium battery pack voltage detection circuit 26, and the switching of relay contacts is controlled, so that the direct-current voltage output by the lithium battery pack 6 is 21.5V-27V, and the direct-current voltage can be used by loads in a wide voltage range.
The principle that the lithium battery pack voltage detection circuit 26 controls the on and off of the relay a8, the relay b9 and the relay c10 is shown in fig. 5, a resistor R1 is arranged at the output end of the lithium battery pack voltage detection circuit 26, a resistor R1 is connected with the base of a transistor T1, the collector of the transistor T1 is connected with the coils of the relay a8, the relay b9 and the relay c10, the emitter of the transistor T1 is grounded, one end of the resistor R2 is connected with the base of the transistor T1, one end of the resistor R2 is connected with the emitter of the transistor T1, two ends of the coils of the relay a8, the relay b9 and the relay c10 are connected in parallel with a diode D1, and the anode of the diode D1 is; when the lithium battery pack voltage detection circuit 26 outputs a high level, the transistor T1 is in saturated conduction, the relay coil is electrified, the normally open contact is attracted, the normally closed contact is disconnected, when the lithium battery pack voltage detection circuit 26 outputs a low level, the transistor T1 is cut off, the relay coil is powered off, the normally open contact is disconnected, the normally closed contact is closed, wherein, the resistor R1 plays a role in limiting current, the power consumption of the transistor T1 is reduced, the resistor R2 enables the transistor T1 to be reliably cut off, the diode D1 reversely flows current, a release path is provided for the transistor T1 in the relay coil when the transistor T1 is turned off by conduction and turning off, because the coil voltages of the relay a8, the relay b9 and the relay c10 are both +12V, so the diode D1 also clamps the voltage thereof on +12V or.
It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The portable emergency maintenance power supply is characterized by comprising a mains supply/oil engine input port (1), wherein the mains supply/oil engine input port (1) is respectively connected with an input end of an EMI module (2) and a normally open contact of a relay d (17), an output end of the EMI module (2) is connected with an input end of a rectification filter module (3), an output end of the rectification filter module (3) is connected with an input end of a DC/DC module c (4), an output end of the DC/DC module c (4) is sequentially connected with an input end of a charging module (5) and an input end of a lithium battery pack (6), and an input end of the charging module (5) is further connected with a silicon power input port (7);
the output end of the rectification filter module (3) is also respectively connected with the input ends of a DC/DC module a (20) and a DC/DC module b (21), the DC/DC module a (20) and the DC/DC module b (21) are respectively connected with one input end of a rectification bridge c (13) and a coil of a relay d (17) after being connected in parallel, two output ends of the rectification bridge c (13) are respectively connected with a 24V direct current output port a (14) and a 24V direct current output port b (15), and a common contact of the relay d (17) is connected with an alternating current output port (18);
the output end of the lithium battery pack (6) is connected with one end of a relay a (8), the other end of the relay a (8) is respectively connected with the input ends of an inverter module (16) and a charger baby module (19), the charger baby module (19) outputs five paths of voltage which are respectively DC28V, DC16.8V, DC12V, DC9.5V and DC5V, and the output end of the inverter module (16) is connected with a normally closed contact of a relay d (17);
the relay a (8) is further connected with the relay b (9) and the relay c (10) in series, the relay b (9) is connected with the input end of the rectifier bridge a (11), the output end of the rectifier bridge a (11) is connected with the input end of the rectifier bridge b (12), the input end of the rectifier bridge b (12) is further connected with one contact of the relay c (10), and the other contact of the relay c (10) is connected with the other input end of the rectifier bridge c (13) after being connected with the output end of the rectifier bridge b (12) in series.
2. The portable emergency maintenance power supply according to claim 1, wherein the output end of the lithium battery pack (6) is connected with a lithium battery pack voltage detection circuit (26), the output end of the lithium battery pack voltage detection circuit (26) is respectively connected with coils of a relay a (8), a relay b (9) and a relay c (10), the output end of the lithium battery pack (6) is connected with a normally open contact of the relay a (8), and a common contact of the relay a (8) is respectively connected with the input ends of the inverter module (16) and the charger baby module (19);
the utility model discloses a rectifier bridge, including relay a (8), relay b (9), normally closed contact, the normally closed contact of relay b (8) still establishes ties relay b (9), the common contact of relay b (9) is connected with the normally closed contact of relay c (10), the normally closed contact of relay b (9) still connects the input of rectifier bridge a (11), the input of rectifier bridge b (12) is connected in the output of rectifier bridge a (11), the input of rectifier bridge b (12) still is connected with the normally closed contact of relay c (10), the output of rectifier bridge b (12) and the common contact series connection back of relay c (10) connect an input of rectifier bridge c (13).
3. The portable emergency maintenance power supply of claim 2, wherein a control circuit is arranged between the output end of the lithium battery pack voltage detection circuit (26) and the relay, the control circuit comprises a resistor R1, a resistor R2 and a transistor T1, one end of the resistor R1 is connected with the output end of the lithium battery pack voltage detection circuit (26), the other end of the resistor R1 is connected with the base of a transistor T1, the collector of the transistor T1 is connected with the coil of the relay, the emitter of the transistor T1 is grounded, one end of the resistor R2 is connected with the base of a transistor T1, and the other end of the resistor R2 is connected with the emitter of a transistor T1; and a diode D1 is connected in parallel at two ends of the relay coil, and the anode of the diode D1 is connected with the collector of the transistor T1.
4. The portable emergency maintenance power supply of claim 1, wherein the mains/oil engine input port (1) is further connected with an AC over-voltage and under-voltage indication circuit (22).
5. The portable emergency maintenance power supply according to claim 1, characterized in that the lithium battery pack (6) is connected with a battery under-voltage indication, an alarm circuit, an under-voltage shutdown circuit (24).
6. The portable emergency maintenance power supply according to claim 1, further comprising a liquid crystal acquisition module (25), wherein the liquid crystal acquisition module (25) is respectively connected to the silicon power input port (7), the lithium battery pack (6), the ac output port (18), the 24V dc output port, and the charger module (19), and the 24V dc output port comprises a 24V dc output port a (14) and a 24V dc output port b (15).
7. The portable emergency maintenance power supply according to claim 1, wherein the 24V dc output port a (14) and the 24V dc output port b (15) are both connected to a 24V output overload indicating circuit (23).
8. The portable emergency service power supply of claim 1 wherein the rectifier bridge is model number STPS160H100 TV.
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| CN201921519742.XU CN210297344U (en) | 2019-09-12 | 2019-09-12 | Portable emergency maintenance power supply |
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| CN201921519742.XU CN210297344U (en) | 2019-09-12 | 2019-09-12 | Portable emergency maintenance power supply |
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| CN210297344U true CN210297344U (en) | 2020-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783248A (en) * | 2021-08-16 | 2021-12-10 | 姚仕杰 | Portable medical equipment maintains device control circuit |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783248A (en) * | 2021-08-16 | 2021-12-10 | 姚仕杰 | Portable medical equipment maintains device control circuit |
| CN113783248B (en) * | 2021-08-16 | 2024-01-05 | 深圳市卡沃科技有限公司 | Portable medical equipment maintenance device control circuit |
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