CN209913571U - Uninterrupted power supply device - Google Patents
Uninterrupted power supply device Download PDFInfo
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- CN209913571U CN209913571U CN201921012492.0U CN201921012492U CN209913571U CN 209913571 U CN209913571 U CN 209913571U CN 201921012492 U CN201921012492 U CN 201921012492U CN 209913571 U CN209913571 U CN 209913571U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 230000005669 field effect Effects 0.000 claims abstract description 19
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an uninterrupted power supply device, including battery BAT, switch circuit, power control circuit and power conversion module, the switch circuit comprises start button S1 and controlled switch DO1, and wherein, start button S1 connects the back with controlled switch DO1, and one end is connected in the positive pole of battery BAT, and the other end is connected in resistance R1 among the power control circuit; the power supply control circuit is composed of a voltage stabilizer Q1, a resistor R1, a resistor R2, a field-effect tube Q2, a resistor R3, a resistor R4 and a relay K1. The uninterrupted power supply device adopts the power supply control circuit to respectively realize uninterrupted power supply of power frequency alternating current and the output direct current power of the battery pack, overcharge and overdischarge protection and automatic maintenance of the battery pack, the power supply control circuit is connected with the power conversion module and the battery module, and the uninterrupted power supply system is controlled to output the direct current power by the power supply control circuit, so that the uninterrupted power supply is realized.
Description
Technical Field
The utility model relates to a power supply system technical field specifically is an uninterrupted power supply device.
Background
The power batteries are required to be used in groups before and after retirement, and the performance of the single batteries is required to be detected by means of test equipment before grouping. The test equipment in the market is usually supplied power by a power frequency power supply so as to meet the normal work of various parts such as an industrial personal computer, a control module and the like, and an uninterrupted power supply system is less equipped.
When the power supply system of the test equipment is suddenly powered off due to a fault, the battery test process is interrupted, key elements of the industrial personal computer can be damaged, the service life of the industrial personal computer is shortened, files of an operating system can be lost or damaged, the system cannot be started, and the test process is influenced.
Disclosure of Invention
An object of the utility model is to provide an uninterrupted power supply device is connected power control circuit and power conversion module and battery module, through power control circuit control uninterrupted power source system output direct current power, has realized uninterrupted power supply, can solve the problem among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme: an uninterruptible power supply device comprises a storage battery BAT, a switch circuit, a power supply control circuit and a power conversion module, wherein the switch circuit consists of a start button S1 and a controlled switch DO1, one end of the start button S1 is connected with the anode of the storage battery BAT after being connected with the controlled switch DO1 in parallel, and the other end of the start button S1 is connected with a resistor R1 in the power supply control circuit; the power supply control circuit consists of a voltage stabilizer Q1, a resistor R1, a resistor R2, a field-effect tube Q2, a resistor R3, a resistor R4 and a relay K1, wherein the resistor R1 is respectively connected with a reference voltage input end of the voltage stabilizer Q1 and a resistor R2, the resistor R2 is connected with the negative electrode of the battery BAT, the cathode of the voltage stabilizer Q1 is connected with the gate of the field-effect tube Q2 after being connected with the resistor R4, the resistor R3 is connected in parallel with the two ends of the source and the gate of the field-effect tube Q2, one end of a driving coil of the relay K1 is connected with the drain of the field-effect tube Q2, and the other; the alternating current input end of the power conversion module is connected to the N/L of a mains supply, the direct current output negative pole end of the power conversion module is connected to the negative pole of the load, the direct current output positive pole end of the power conversion module is connected to the positive pole of the load after being connected to the second switch of the relay K1, the battery input interface positive pole end of the power conversion module is connected to the first switch of the relay K1 and then connected to the positive pole of the storage battery BAT, and the battery input interface negative pole end of the power conversion module is connected to the negative pole of the storage battery BAT.
Preferably, the two ends of the resistor R2 and the resistor R3 are further connected in parallel with a capacitor C1 and a capacitor C2, respectively.
Preferably, a freewheeling diode D1 is further connected in parallel to two ends of the relay K1.
Preferably, the positive terminal of the battery input interface of the power conversion module is further connected to a diode D2, and the diode D2 is connected to the positive electrode of the battery BAT.
Preferably, the field effect transistor Q2 is a P-type field effect transistor, and the battery BAT is a 12V lead-acid battery.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the uninterruptible power supply device realizes the complete disconnection of the storage battery BAT and a subsequent circuit in a shutdown state through the power supply control loop, and prevents the energy of the storage battery BAT from being continuously consumed when the equipment is kept still; and the power supply control loop is realized by adopting a universal component, and has the advantages of low cost and convenient parameter adjustment.
Drawings
Fig. 1 is a schematic diagram of the circuit system of the present invention.
In the figure: 1. a switching on/off circuit; 2. power control circuit, 3, power conversion module.
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.
Referring to fig. 1, an uninterruptible power supply includes a battery BAT, a switch circuit 1, a power control circuit 2, and a power conversion module 3; the switch circuit 1 consists of a starting button S1 and a controlled switch DO1, wherein after the starting button S1 is connected with the controlled switch DO1 in parallel, one end of the starting button S1 is connected with the anode of the battery BAT, and the other end of the starting button S1 is connected with a resistor R1 in the power control circuit 2; the power supply control circuit 2 is composed of a voltage stabilizer Q1, a resistor R1, a resistor R2, a P-type field effect transistor Q2, a resistor R3, a resistor R4 and a relay K1, wherein the resistor R1 is respectively connected with a reference voltage input end of the voltage stabilizer Q1 and a resistor R2, the resistor R2 is connected with the negative electrode of the battery BAT, the cathode of a voltage stabilizer Q1 is connected with the resistor R4 and then connected with the grid electrode of the P-type field effect transistor Q2, the resistor R3 is connected with the source electrode and the grid electrode of the P-type field effect transistor Q2 in parallel, the input voltage of the battery BAT is monitored in real time due to the fact that the two ends of the resistor R2 and the resistor R3 are respectively connected with a capacitor C1 and a capacitor C2 in parallel, the stability of the circuit can be improved, a battery voltage monitoring loop composed of the voltage stabilizer Q1, the resistor R1 and the resistor R2 is used for monitoring the input voltage of the battery BAT, one end, because the two ends of the relay K1 are also connected with the freewheeling diode D1 in parallel, when the relay K1 is disconnected, the induced electromotive force of a relay coil can be clamped, so that a coil driving loop is protected, and the relay K1 controls the on-off of the storage battery BAT and the uninterruptible power supply and the on-off of the load and the uninterruptible power supply through the relay driving loop formed by the P-type field effect transistor, the resistor R3 and the resistor R4; the alternating current input end of the power conversion module 3 is connected to the commercial power N/L, the direct current output negative pole end of the power conversion module 3 is connected to the negative pole of the load, the direct current output positive pole end of the power conversion module 3 is connected to the positive pole of the load after being connected to the second switch of the relay K1, the battery input interface positive pole end of the power conversion module 3 is connected to the positive pole of the storage battery BAT after being connected to the first switch of the relay K1, and the battery input interface negative pole end of the power conversion module 3 is connected to the negative pole of the storage; the positive terminal of the battery input interface of the power conversion module 3 is further connected to the diode D2, and the diode D2 is connected to the positive terminal of the battery BAT.
The working principle is as follows:
when the start button S1 is pressed, and the battery BAT is not undervoltage, the relay K1 is closed, the battery BAT is communicated with the uninterruptible power supply module, and the uninterruptible power supply module is communicated with the load.
When the commercial power is available, the 24V output of the uninterrupted power supply module is supplied by the commercial power, and the floating charging is kept. When no commercial power is available, the 24V output of the uninterruptible power supply module is powered by the storage battery BAT, and the storage battery BAT starts to discharge.
When the system is powered on, the controlled switch DO1 is closed, and since it is connected in parallel with the two ends of the start button S1, even if the start button S1 is released, the system continues to be turned on; and finishing the startup.
During operation, when a shutdown signal is generated, the controlled switch DO1 is switched off, and the system is powered off and shutdown.
The principle of under-voltage protection:
in normal operation, at least one of the power-on button S1 or the controlled switch DO1 is in a closed state.
When the voltage of the storage battery is less than 10.778V, the voltage divided by the resistor R1 and the resistor R2 is less than 2.495V, the current pulled down by the cathode of the voltage stabilizer Q1 is 0, the voltage on the resistor R3 and the resistor R4 is 0, the field effect transistor Q2 is cut off, and the relay K1 is not closed; the storage battery BAT is not connected to the power conversion module 3, and the power conversion module 3 is not connected to the load.
When the voltage of the storage battery is larger than or equal to 10.778V and the voltage divided by the resistors R1 and R2 is larger than or equal to 2.495V, the cathode of the voltage stabilizer Q1 generates pull-down current, the starting voltage of the field effect tube Q2 is formed on the resistor R3, the effect tube Q2 is conducted, and the relay K1 is closed; the storage battery BAT is communicated with the power conversion module 3, and the power conversion module 3 is communicated with a load.
When the system is powered by the storage battery BAT and Ubat is lowered to a certain degree, Utest is less than Vref, and then the relay K1 is automatically switched off; the over-discharge of the storage battery BAT is prevented, and the under-voltage protection of the storage battery is realized.
The battery under-voltage maintenance principle:
because some improper operations, for example, the device is idle for a long time, the battery BAT is under-voltage by self-discharge, so that the system cannot complete normal startup, and at this time, after the mains supply is connected, the battery side of the uninterruptible switch power supply can charge the battery BAT through the diode D2 until the voltage of the battery BAT is recovered to be normal.
The uninterruptible power supply device realizes the complete disconnection of the storage battery BAT and a subsequent circuit in a shutdown state through the power supply control loop, and prevents the energy of the storage battery BAT from being continuously consumed when the equipment is kept still; and the power supply control loop is realized by adopting a universal component, and has the advantages of low cost and convenient parameter adjustment.
In summary, the following steps: the uninterruptible power supply device adopts the power supply control circuit to respectively realize the uninterruptible power supply of power frequency alternating current and the output direct current power of the battery pack, the overcharge and overdischarge protection and the automatic maintenance of the battery pack, the power supply control circuit 2 and the power conversion module 3 are connected with the storage battery BAT, and the uninterruptible power supply system is controlled to output the direct current power through the power supply control circuit 1, so that the uninterruptible power supply is realized, and the problems of the prior art are effectively solved.
It is noted that, herein, relational terms such as first and second, and the like may be 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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an uninterrupted power supply device, includes battery BAT, switch circuit (1), power control circuit (2) and power conversion module (3), its characterized in that: the power on/off circuit (1) consists of a power on button S1 and a controlled switch DO1, wherein after the power on button S1 is connected with the controlled switch DO1 in parallel, one end of the power on/off button is connected with the anode of the storage battery BAT, and the other end of the power on/off button is connected with a resistor R1 in the power control circuit (2); the power supply control circuit (2) is composed of a voltage stabilizer Q1, a resistor R1, a resistor R2, a field-effect transistor Q2, a resistor R3, a resistor R4 and a relay K1, wherein the resistor R1 is respectively connected with a reference voltage input end of the voltage stabilizer Q1 and a resistor R2, the resistor R2 is connected with the negative electrode of the battery BAT, the cathode of the voltage stabilizer Q1 is connected with the gate of the field-effect transistor Q2 after being connected with the resistor R4, the resistor R3 is connected with the two ends of the source and the gate of the field-effect transistor Q2 in parallel, one end of a driving coil of the relay K1 is connected with the drain of the field-effect transistor Q2, and; the alternating current input end of the power conversion module (3) is connected to the N/L of a mains supply, the direct current output negative pole end of the power conversion module (3) is connected to the negative pole of the load, the direct current output positive pole end is connected to the second switch of the relay K1 and then connected to the positive pole of the load, the battery input interface positive pole end of the power conversion module (3) is connected to the first switch of the relay K1 and then connected to the positive pole of the storage battery BAT, and the battery input interface negative pole end is connected to the negative pole of the storage battery BAT.
2. An uninterruptible power supply apparatus according to claim 1, wherein: the two ends of the resistor R2 and the resistor R3 are respectively connected with the capacitor C1 and the capacitor C2 in parallel.
3. An uninterruptible power supply apparatus according to claim 1, wherein: and a freewheeling diode D1 is also connected in parallel to the two ends of the relay K1.
4. An uninterruptible power supply apparatus according to claim 1, wherein: the positive end of the battery input interface of the power conversion module (3) is also connected to a diode D2, and the diode D2 is connected to the positive electrode of the battery BAT.
5. An uninterruptible power supply apparatus according to claim 1, wherein: the field effect transistor Q2 is a P-type field effect transistor, and the storage battery BAT is a 12V lead-acid battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012492.0U CN209913571U (en) | 2019-07-01 | 2019-07-01 | Uninterrupted power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012492.0U CN209913571U (en) | 2019-07-01 | 2019-07-01 | Uninterrupted power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209913571U true CN209913571U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921012492.0U Active CN209913571U (en) | 2019-07-01 | 2019-07-01 | Uninterrupted power supply device |
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| Country | Link |
|---|---|
| CN (1) | CN209913571U (en) |
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2019
- 2019-07-01 CN CN201921012492.0U patent/CN209913571U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 5, 5th Floor, No. 6 Xiyuan 9th Road, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee after: Hangzhou Kegong Electronic Technology Co.,Ltd. Country or region after: China Patentee after: China South Power Grid International Co.,Ltd. Address before: Building 5, 3rd Floor, No. 6 Xiyuan Fifth Road, Xihu Science and Technology Park, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee before: HANGZHOU KEGONG ELECTRONIC TECHNOLOGY CO.,LTD. Country or region before: China Patentee before: China South Power Grid International Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240129 Address after: 510530 Building 3, 4, 5 and 3 of Building J1, 11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China South Power Grid International Co.,Ltd. Country or region after: China Address before: Building 5, 5th Floor, No. 6 Xiyuan 9th Road, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee before: Hangzhou Kegong Electronic Technology Co.,Ltd. Country or region before: China Patentee before: China South Power Grid International Co.,Ltd. |
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| TR01 | Transfer of patent right |