CN212849972U - Lithium ion uninterrupted power source - Google Patents
Lithium ion uninterrupted power source Download PDFInfo
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- CN212849972U CN212849972U CN202021420745.0U CN202021420745U CN212849972U CN 212849972 U CN212849972 U CN 212849972U CN 202021420745 U CN202021420745 U CN 202021420745U CN 212849972 U CN212849972 U CN 212849972U
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model relates to a lithium ion uninterrupted power source, including commercial power access port, AC-DC converting circuit, DC-DC converting circuit, lithium ion battery box, charging circuit, diode D1, diode D2, diode D3, diode D4 and controller; the utility model discloses a lithium ion battery is as stand-by power supply, and the utility model discloses the in-process of work, carry out real-time sampling to the working condition of lithium ion battery group through battery data sampling circuit, and through the state of controller control main road controllable switch and branch road controllable switch, will correspond lithium ion battery group and go into the working circuit or reject from the working circuit in the cluster, recombination that like this can be selective gets into operating condition's lithium ion battery group, can promote the life of whole lithium ion battery group like this, and can discharge the unstable lithium ion battery group of working from the working circuit temporarily, guarantee to export stable operating voltage.
Description
Technical Field
The utility model relates to a power, concretely relates to lithium ion uninterrupted power source.
Background
With the high importance of the country on the safety production of coal mines, the safety monitoring equipment needed in the underground coal mines is more and more in demand, and the equipment needs to be operated without power failure, so that an Uninterruptible Power Supply (UPS) needs to be equipped for the equipment. The battery pack used by the existing mining uninterruptible power supply is a lead-acid storage battery, and the battery has the advantages of small discharge current, precipitation of dangerous gas, small battery electric quantity, large volume and short cycle service life. In addition, the conventional mining uninterruptible power supply generally does not have a voltage stabilizing function of output voltage, and the fluctuation range of the output voltage is large, so that the requirement of coal mine safety production which is increasingly developed is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a lithium ion uninterrupted power source is provided, its long service life, and can export stable voltage.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a lithium ion uninterruptible power supply comprises a mains supply access port, an AC-DC conversion circuit, a DC-DC conversion circuit, a lithium ion standby battery box, a charging circuit, a diode D1, a diode D2, a diode D3, a diode D4 and a controller;
the positive input end and the negative input end of the AC-DC conversion circuit are electrically connected to the mains supply access port, the positive output end of the AC-DC conversion circuit is electrically connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is electrically connected to the positive input end of the DC-DC conversion circuit, and the negative output end of the AC-DC conversion circuit is electrically connected to the negative input end of the DC-DC conversion circuit;
the lithium ion standby battery box is internally provided with n groups of lithium ion battery packs, n main circuit controllable switches and n branch circuit controllable switches, wherein the n groups of lithium ion battery packs correspond to the n main circuit controllable switches one by one, the n groups of lithium ion battery packs correspond to the n branch circuit controllable switches one by one, the n main circuit controllable switches are connected in series, each group of lithium ion battery packs is connected with one corresponding branch circuit controllable switch in series and then connected in parallel at two ends of one corresponding main circuit controllable switch, and the connecting directions of the positive and negative electrodes of all the lithium ion battery packs are the same; after the n main circuit controllable switches are connected in series, one end of each main circuit controllable switch is a positive electrode of a lithium ion standby battery box and corresponds to the positive electrode of the lithium ion battery pack, and the other end of each main circuit controllable switch is a negative electrode of the lithium ion standby battery box and corresponds to the negative electrode of the lithium ion battery pack;
the positive input end and the negative input end of the charging circuit are electrically connected to the commercial power access port, the positive output end of the charging circuit is electrically connected to the positive electrode of the diode D2, the negative electrode of the diode D2 is electrically connected to the negative electrode of the diode D3, the positive electrode of the diode D3 is electrically connected to the positive electrode of the lithium ion spare battery box, and the negative output end of the charging circuit is electrically connected to the negative electrode of the lithium ion spare battery box;
two ends of the diode D2 are connected in parallel with a discharge controllable switch, and two ends of the diode D3 are connected in parallel with a charge controllable switch; the anode of the diode D2 is electrically connected to the anode of the diode D4, and the cathode of the diode D4 is electrically connected to the positive input end of the DC-DC conversion circuit;
the lithium ion standby battery box is characterized in that a battery data sampling circuit is further arranged in the lithium ion standby battery box, a signal output end of the battery data sampling circuit is electrically connected with a signal input end of the controller, and the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are electrically connected with a signal output end of the controller.
The utility model has the advantages that: the utility model relates to a lithium ion uninterrupted power source adopts lithium ion battery as stand-by power supply, and the utility model discloses the in-process of work, carry out real-time sampling to the working condition of lithium ion battery group through battery data sampling circuit, and through the state of controller control main road controllable switch and branch road controllable switch, will correspond lithium ion battery group and go into the working circuit or reject from the working circuit, recombination that like this can be selective gets into working state's lithium ion battery group, can promote the life of whole lithium ion battery group like this, and can discharge the unstable lithium ion battery group of work from the working circuit temporarily, guarantee to export stable operating voltage. In addition, the states of the discharge controllable switch and the charge controllable switch are controlled by the controller, so that the charging and discharging of the lithium ion battery pack are realized.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, n explosion-proof isolation cavities are arranged in the lithium ion standby battery box, and the n groups of lithium ion battery packs are respectively and correspondingly positioned in the n explosion-proof isolation cavities.
The beneficial effect of adopting the further scheme is that: each group of lithium ion battery pack is respectively positioned in one explosion-proof isolation cavity, so that the explosion-proof grade can be improved.
Further, the battery data sampling circuit comprises n temperature sensors, n voltage detection circuits and a current detection circuit; the n temperature sensors are correspondingly arranged in the n explosion-proof isolation cavities one by one, and the output ends of all the temperature sensors are electrically connected to the signal input end of the controller; the input ends of the n voltage detection circuits are electrically connected to the n groups of lithium ion battery packs in a one-to-one correspondence manner, and the output ends of all the voltage detection circuits are electrically connected to the signal input end of the controller; the input end of the current detection circuit is electrically connected to the positive electrode of the lithium ion standby battery box, and the output end of the current detection circuit is connected to the signal input end of the controller.
The beneficial effect of adopting the further scheme is that: the temperature sensor collects the temperature of the lithium ion battery pack, when the lithium ion battery pack works, the temperature is too high, the states of the corresponding main circuit controllable switch and the branch circuit controllable switch can be controlled through the controller, the lithium ion battery pack with the too high temperature is removed from the working circuit, and the other lithium ion battery pack without work is connected into the working circuit in series instead of the lithium ion battery pack with the too high temperature (the states of the main circuit controllable switch and the branch circuit controllable switch corresponding to the other lithium ion battery pack without work are controlled through the controller to be connected into the working circuit in series), so that the problem that the lithium ion battery pack is burnt due to the too high temperature can be avoided, and the stable voltage output by the power supply can be ensured. The voltage detection circuit is used for detecting the voltages at two ends of the lithium ion battery pack, when the voltage of the lithium ion battery pack is too low, the states of the main circuit controllable switch and the branch circuit controllable switch corresponding to the lithium ion battery pack can be controlled by the controller in the same way, the lithium ion battery pack with too low voltage is removed from the working circuit, and the other lithium ion battery pack without work and with normal voltage is used for substituting the lithium ion battery pack with too low voltage to be serially connected into the working circuit (the states of the main circuit controllable switch and the branch circuit controllable switch corresponding to the other lithium ion battery pack without work and with normal voltage are controlled by the controller to be serially connected into the working circuit), so that the problem that the service life is shortened due to excessive discharge of the lithium ion battery pack can be avoided, and the stable voltage output by. The current detection circuit is used for detecting the current condition output by the lithium ion standby battery box and avoiding the problem of overcurrent of the power supply.
Further, the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are electrically connected with the microprocessor through an SPI bus.
Further, the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are all silicon controlled switches.
Further, the positive and negative output terminals of the DC-DC conversion circuit are DC110V, and the output current of the DC-DC conversion circuit is 25A.
Drawings
Fig. 1 is a schematic circuit diagram of a lithium ion uninterruptible power supply according to the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, a lithium ion uninterruptible power supply includes a utility power access port, an AC-DC conversion circuit, a DC-DC conversion circuit, a lithium ion battery backup box, a charging circuit, a diode D1, a diode D2, a diode D3, a diode D4, and a controller; the positive input end and the negative input end of the AC-DC conversion circuit are electrically connected to the mains supply access port, the positive output end of the AC-DC conversion circuit is electrically connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is electrically connected to the positive input end of the DC-DC conversion circuit, and the negative output end of the AC-DC conversion circuit is electrically connected to the negative input end of the DC-DC conversion circuit; the lithium ion standby battery box is internally provided with n groups of lithium ion battery packs (Px, x is 1,2, …, n), n main circuit controllable switches (Kax, x is 1,2, …, n) and n branch circuit controllable switches (Kbx, x is 1,2, …, n), wherein the n groups of lithium ion battery packs correspond to the n main circuit controllable switches one by one, the n groups of lithium ion battery packs correspond to the n branch circuit controllable switches one by one, the n main circuit controllable switches are connected in series, each group of lithium ion battery packs and one corresponding branch circuit controllable switch are connected in series and then connected in parallel at two ends of one corresponding main circuit controllable switch, and the connection directions of the positive and negative electrodes of all the lithium ion battery packs are the same; after the n main circuit controllable switches are connected in series, one end of each main circuit controllable switch is a positive electrode of a lithium ion standby battery box and corresponds to the positive electrode of the lithium ion battery pack, and the other end of each main circuit controllable switch is a negative electrode of the lithium ion standby battery box and corresponds to the negative electrode of the lithium ion battery pack; the positive input end and the negative input end of the charging circuit are electrically connected to the commercial power access port, the positive output end of the charging circuit is electrically connected to the positive electrode of the diode D2, the negative electrode of the diode D2 is electrically connected to the negative electrode of the diode D3, the positive electrode of the diode D3 is electrically connected to the positive electrode of the lithium ion spare battery box, and the negative output end of the charging circuit is electrically connected to the negative electrode of the lithium ion spare battery box; a discharging controllable switch (K1) is connected in parallel with two ends of the diode D2, and a charging controllable switch (K2) is connected in parallel with two ends of the diode D3; the anode of the diode D2 is electrically connected to the anode of the diode D4, and the cathode of the diode D4 is electrically connected to the positive input end of the DC-DC conversion circuit; the lithium ion standby battery box is characterized in that a battery data sampling circuit is further arranged in the lithium ion standby battery box, a signal output end of the battery data sampling circuit is electrically connected with a signal input end of the controller, and the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are electrically connected with a signal output end of the controller.
In this particular embodiment: the lithium ion standby battery box is internally provided with n explosion-proof isolation cavities, and the n groups of lithium ion battery packs are respectively and correspondingly positioned in the n explosion-proof isolation cavities. Each group of lithium ion battery pack is respectively positioned in one explosion-proof isolation cavity, so that the explosion-proof grade can be improved.
In this particular embodiment: the battery data sampling circuit comprises n temperature sensors, n voltage detection circuits and a current detection circuit; the n temperature sensors are correspondingly arranged in the n explosion-proof isolation cavities one by one, and the output ends of all the temperature sensors are electrically connected to the signal input end of the controller; the input ends of the n voltage detection circuits are electrically connected to the n groups of lithium ion battery packs in a one-to-one correspondence manner, and the output ends of all the voltage detection circuits are electrically connected to the signal input end of the controller; the input end of the current detection circuit is electrically connected to the positive electrode of the lithium ion standby battery box, and the output end of the current detection circuit is connected to the signal input end of the controller.
The temperature sensor collects the temperature of the lithium ion battery pack, when the lithium ion battery pack works, the temperature is too high, the states of the corresponding main circuit controllable switch and the branch circuit controllable switch can be controlled through the controller, the lithium ion battery pack with the too high temperature is removed from the working circuit, and the other lithium ion battery pack without work is connected into the working circuit in series instead of the lithium ion battery pack with the too high temperature (the states of the main circuit controllable switch and the branch circuit controllable switch corresponding to the other lithium ion battery pack without work are controlled through the controller to be connected into the working circuit in series), so that the problem that the lithium ion battery pack is burnt due to the too high temperature can be avoided, and the stable voltage output by the power supply can be ensured. The voltage detection circuit is used for detecting the voltages at two ends of the lithium ion battery pack, when the voltage of the lithium ion battery pack is too low, the states of the main circuit controllable switch and the branch circuit controllable switch corresponding to the lithium ion battery pack can be controlled by the controller in the same way, the lithium ion battery pack with too low voltage is removed from the working circuit, and the other lithium ion battery pack without work and with normal voltage is used for substituting the lithium ion battery pack with too low voltage to be serially connected into the working circuit (the states of the main circuit controllable switch and the branch circuit controllable switch corresponding to the other lithium ion battery pack without work and with normal voltage are controlled by the controller to be serially connected into the working circuit), so that the problem that the service life is shortened due to excessive discharge of the lithium ion battery pack can be avoided, and the stable voltage output by. The current detection circuit is used for detecting the current condition output by the lithium ion standby battery box and avoiding the problem of overcurrent of the power supply.
In this particular embodiment: the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are electrically connected with the microprocessor through an SPI bus.
In this particular embodiment: the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are all silicon controlled switches.
In this particular embodiment: the positive and negative output terminal voltage of the DC-DC conversion circuit is DC110V, and the output current of the DC-DC conversion circuit is 25A.
The utility model discloses in, when commercial power access port switch-on commercial power, the AC-DC converting circuit output direct voltage that is connected with commercial power access port is higher than lithium ion battery backup battery case voltage and charging circuit output voltage, and diode D4 ends this moment, and diode D1 switches on, and DC-DC converting circuit's positive pole switches on with AC-DC conversion module positive pole, passes through DC-DC converting circuit by AC-DC converting circuit this moment and supplies power to the output end load, and lithium ion battery backup battery case is out of work. Under the condition of mains supply, the lithium ion battery pack in the lithium ion battery box can be charged through the charging circuit, at the moment, the diode D2 is conducted, the diode D3 is cut off, the controller controls the charging controllable switch to be closed and controls the discharging controllable switch to be opened, and the lithium ion battery box is charged. When the commercial power of the commercial power access port is cut off, the diode D3 is conducted, the diode D2 is cut off, the discharge controllable switch is switched on under the control of the controller, the charge controllable switch is switched off under the control of the controller, the diode D4 is conducted, the diode D1 is cut off, and at the moment, the lithium ion standby battery box starts to work and is in a power supply state.
The utility model relates to a lithium ion uninterrupted power source adopts lithium ion battery as stand-by power supply, and the utility model discloses the in-process of work, carry out real-time sampling to the working condition of lithium ion battery group through battery data sampling circuit, and through the state of controller control main road controllable switch and branch road controllable switch, will correspond lithium ion battery group and go into the working circuit or reject from the working circuit, recombination that like this can be selective gets into working state's lithium ion battery group, can promote the life of whole lithium ion battery group like this, and can discharge the unstable lithium ion battery group of work from the working circuit temporarily, guarantee to export stable operating voltage.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. A lithium ion uninterruptible power supply, characterized in that: the lithium ion battery pack comprises a mains supply access port, an AC-DC conversion circuit, a DC-DC conversion circuit, a lithium ion standby battery box, a charging circuit, a diode D1, a diode D2, a diode D3, a diode D4 and a controller;
the positive input end and the negative input end of the AC-DC conversion circuit are electrically connected to the mains supply access port, the positive output end of the AC-DC conversion circuit is electrically connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is electrically connected to the positive input end of the DC-DC conversion circuit, and the negative output end of the AC-DC conversion circuit is electrically connected to the negative input end of the DC-DC conversion circuit;
the lithium ion standby battery box is internally provided with n groups of lithium ion battery packs, n main circuit controllable switches and n branch circuit controllable switches, wherein the n groups of lithium ion battery packs correspond to the n main circuit controllable switches one by one, the n groups of lithium ion battery packs correspond to the n branch circuit controllable switches one by one, the n main circuit controllable switches are connected in series, each group of lithium ion battery packs is connected with one corresponding branch circuit controllable switch in series and then connected in parallel at two ends of one corresponding main circuit controllable switch, and the connecting directions of the positive and negative electrodes of all the lithium ion battery packs are the same; after the n main circuit controllable switches are connected in series, one end of each main circuit controllable switch is a positive electrode of a lithium ion standby battery box and corresponds to the positive electrode of the lithium ion battery pack, and the other end of each main circuit controllable switch is a negative electrode of the lithium ion standby battery box and corresponds to the negative electrode of the lithium ion battery pack;
the positive input end and the negative input end of the charging circuit are electrically connected to the commercial power access port, the positive output end of the charging circuit is electrically connected to the positive electrode of the diode D2, the negative electrode of the diode D2 is electrically connected to the negative electrode of the diode D3, the positive electrode of the diode D3 is electrically connected to the positive electrode of the lithium ion spare battery box, and the negative output end of the charging circuit is electrically connected to the negative electrode of the lithium ion spare battery box;
two ends of the diode D2 are connected in parallel with a discharge controllable switch, and two ends of the diode D3 are connected in parallel with a charge controllable switch; the anode of the diode D2 is electrically connected to the anode of the diode D4, and the cathode of the diode D4 is electrically connected to the positive input end of the DC-DC conversion circuit;
the lithium ion standby battery box is characterized in that a battery data sampling circuit is further arranged in the lithium ion standby battery box, a signal output end of the battery data sampling circuit is electrically connected with a signal input end of the controller, and the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are electrically connected with a signal output end of the controller.
2. The lithium ion uninterruptible power supply of claim 1, wherein: the lithium ion standby battery box is internally provided with n explosion-proof isolation cavities, and the n groups of lithium ion battery packs are respectively and correspondingly positioned in the n explosion-proof isolation cavities.
3. The lithium ion uninterruptible power supply of claim 2, wherein: the battery data sampling circuit comprises n temperature sensors, n voltage detection circuits and a current detection circuit; the n temperature sensors are correspondingly arranged in the n explosion-proof isolation cavities one by one, and the output ends of all the temperature sensors are electrically connected to the signal input end of the controller; the input ends of the n voltage detection circuits are electrically connected to the n groups of lithium ion battery packs in a one-to-one correspondence manner, and the output ends of all the voltage detection circuits are electrically connected to the signal input end of the controller; the input end of the current detection circuit is electrically connected to the positive electrode of the lithium ion standby battery box, and the output end of the current detection circuit is connected to the signal input end of the controller.
4. The lithium ion uninterruptible power supply of any one of claims 1 to 3, wherein: the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are electrically connected with the controller through an SPI bus.
5. The lithium ion uninterruptible power supply of any one of claims 1 to 3, wherein: the n main circuit controllable switches, the n branch circuit controllable switches, the discharging controllable switch and the charging controllable switch are all silicon controlled switches.
6. The lithium ion uninterruptible power supply of any one of claims 1 to 3, wherein: the positive and negative output terminal voltage of the DC-DC conversion circuit is DC110V, and the output current of the DC-DC conversion circuit is 25A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021420745.0U CN212849972U (en) | 2020-07-17 | 2020-07-17 | Lithium ion uninterrupted power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021420745.0U CN212849972U (en) | 2020-07-17 | 2020-07-17 | Lithium ion uninterrupted power source |
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| Publication Number | Publication Date |
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| CN212849972U true CN212849972U (en) | 2021-03-30 |
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| CN202021420745.0U Active CN212849972U (en) | 2020-07-17 | 2020-07-17 | Lithium ion uninterrupted power source |
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