CN110912260A - Master-slave-structured UPS lithium battery system - Google Patents
Master-slave-structured UPS lithium battery system Download PDFInfo
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- CN110912260A CN110912260A CN201911385267.6A CN201911385267A CN110912260A CN 110912260 A CN110912260 A CN 110912260A CN 201911385267 A CN201911385267 A CN 201911385267A CN 110912260 A CN110912260 A CN 110912260A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
Abstract
The invention provides a UPS lithium battery system with a master-slave framework, which comprises a UPS module and a battery module, wherein the battery module comprises a high-voltage box and M groups of battery units which are connected in series, the UPS module is connected with the high-voltage box, and the high-voltage box is connected with the battery units; the UPS module is provided with a first communication port, the high-voltage box is provided with a second communication port and a third communication port, and the M groups of battery units connected in series are provided with communication ports; the first communication port of the UPS module is connected with the second communication port of the high-voltage box, and the third communication port of the high-voltage box is connected with the communication port of the battery unit. According to the UPS module, the high-voltage box and the battery unit are added on the basis of the UPS module, and communication ports are arranged on the high-voltage box and the battery unit, so that data of voltage and temperature of a detected battery cell can be fed back in time, and timely maintenance is facilitated; the increased battery unit can enlarge the battery capacity of the system, meet the power consumption requirements of most situations and improve the working efficiency.
Description
Technical Field
The invention belongs to the field of battery circuits, and particularly relates to a UPS lithium battery system with a master-slave framework.
Background
The UPS is a system device that is provided to solve the problem of uninterruptible power supply, and is a system device that connects a storage battery to a main unit and converts direct current power into commercial power through a module circuit such as a main unit inverter. The power supply device is mainly used for providing stable and uninterrupted power supply for a single computer, a computer network system or other power electronic equipment.
Most of the current UPS are matched by lead-acid batteries or simple lithium batteries, the power and the state of a battery system are difficult to know in production and use, and the simple matching is not enough to meet the requirement of the existing market for electricity quantity and voltage. In addition, in order to extend the standby time of the battery pack, the capacity of the battery pack system connected in series may be insufficient, and the output power of the battery system is limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a UPS lithium battery system with a master-slave architecture, which solves the problems that the battery capacity in the lithium battery system is not enough and the power is difficult to control in the prior art.
The technical scheme of the invention is realized as follows: a UPS lithium battery system with master-slave structure comprises a UPS module and a battery module,
the battery module comprises a high-voltage box and M groups of battery units connected in series, the UPS module is connected with the high-voltage box, and the high-voltage box is connected with the battery units;
the UPS module is provided with a first communication port, the high-voltage box is provided with a second communication port and a third communication port, and the M groups of battery units connected in series are provided with communication ports; the first communication port of the UPS module is connected with the second communication port of the high-voltage box, and the third communication port of the high-voltage box is connected with the communication port of the battery unit.
Optionally, the UPS includes a filter, a service Su1, a bypass Su2, an input Su3, a static Su4, a static Su5, an output Su6, a rectifier, an inverter, a charger, an input port, an output port, a battery input port, and a first communication port;
the output end of the input port is connected with the input end of the filter, the output ends of the filter are respectively connected with the input end of the charger, the input end of the input Su3, the input end of the bypass Su2 and the input end of the maintenance Su1, the output end of the charger is respectively connected with the output end of the rectifier, the input end of the inverter and the input end of the battery input port, the output end of the input Su3 is connected with the input end of the rectifier, the output end of the rectifier is respectively connected with the output end of the charger and the input end of the inverter, the output end of the inverter is connected with the input end of the static Su5, the output end of the static Su5 is respectively connected with the output end of the static Su 7 and the input end of the output Su6, the output end of the output Su6 is connected with the output end.
Optionally, the high-voltage box includes a pre-charging relay S1, a total positive relay S2, a charging relay S3, a DC internal relay S4, a DC external relay S5, an air switch S6, a neutral relay S7, a total negative relay S8, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a wake-up key K1, a pre-charging resistor R1, a fuse 1, a fuse 2, a BCU, a second communication port, a third communication port, a hall sensor and a BMS;
the output end of a first communication port of the UPS module is connected with the input end of a second communication port of the high-voltage box, the output end of the second communication port is connected with the input end of the BCU, the output end of the BCU is connected with the input end of a third communication port, and the output end of the third communication port is connected with the communication port of the battery unit;
the positive pole of the battery input port is respectively connected with the negative pole of a diode D1, the input end of a charging relay S3 and the positive pole of a diode D3, the positive pole of the diode D1 is respectively connected with the input end of a pre-charging resistor R1, the output end of the charging relay S3 is connected with the input end of a general positive relay S2, the output end of the pre-charging resistor R1 is connected with the input end of the pre-charging relay S1, the output end of a pre-charging relay S1 is respectively connected with the output end of the general positive relay S2, the input end of a Hall sensor and the positive pole of a diode D2, the output end of the Hall sensor is connected with the input of a fuse 2, and the output of the;
the negative electrode of the diode D2 is respectively connected with the input end of the wake-up key K1 and the input end of the DC inner relay S4, the output end of the DC inner relay S4 is respectively connected with the output end of the wake-up key K1, the input end of the DC outer relay S5 and the input end of the idle switch S6, the output end of the DC outer relay S5 is connected with the negative electrode of the diode D3, the output end of the idle switch S6 is connected with the input end of the switching power supply, the output end of the switching power supply is connected with the input end of the fuse 1, the output end of the fuse 1 is respectively connected with the positive electrode of the diode D4 and the positive electrode of the diode D5, and the negative electrode of the diode D4 is respectively connected with the input end of the total negative relay S8; the output end of the total negative relay S8 is respectively connected with the negative electrode of the diode D5 and the negative electrode of the battery unit;
the neutral line of the battery input port is connected to the input of a neutral line relay S7, and the output of neutral line relay S7 is connected to the neutral line of the battery cell.
Optionally, each battery unit includes a slave control unit BMU of the lithium battery management system, a battery pack M, a first communication port of the battery pack M, and a second communication port of the battery pack M; the output end of the fuse 2 is connected with the anode of a battery pack M, the cathode of the battery pack is connected with the input end of a total negative relay S8 and the cathode of a diode D4, and the battery packs M are connected in series;
the output end of the third communication port is connected to the input end of the first communication port of the battery pack M, the BMU receives the information of the first communication port of the battery pack 1, processes the information and sends the processed information to the input end of the second communication port of the battery pack 1, and the output end of the second communication port of the battery pack M-1 is connected with the input end of the first communication port of the battery pack M;
optionally, the neutral line of the battery cell is connected to the battery pack M/2.
Compared with the prior art, the method has the following advantages: this application is through increasing high-voltage box and battery unit on the basis of UPS module, and set up communication port and can in time feed back detection electric core voltage on high-voltage box and battery unit, the data of temperature, so that in time maintain, the power of equipment also can be controlled, the life of equipment has been improved in the lump, and simultaneously, the battery capacity of this system can be enlarged to the battery unit of increase, satisfy the power consumption demand under most of the circumstances, wherein, the design of this circuit can be realized manually, the function of awakening up of charging, let the system also improve work efficiency safely.
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, and 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 diagram of a circuit structure in a UPS lithium battery system of a master-slave architecture according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiment is only a unit embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a master-slave-architecture UPS lithium battery system includes a UPS module and a battery module, where the battery module includes a high voltage box and M groups of battery units connected in series, where M is an integer greater than or equal to 2; the UPS module is connected with the high-voltage box, and the high-voltage box is connected with the battery unit; the UPS module is provided with a first communication port, the high-voltage box is provided with a second communication port and a third communication port, and the M groups of battery units connected in series are provided with communication ports; the first communication port of the UPS module is connected with the second communication port of the high-voltage box, and the third communication port of the high-voltage box is connected with the communication port of the battery unit. Specifically, through as above communication mouth connected mode, can make in real time with the power data transmission that the UPS module detected to the battery module, the inside information exchange that also can carry out of battery module does benefit to like this and knows entire system's state to in time handle dangerous affairs, the communication chip of this system is RS485, specifically can adjust according to actual conditions.
Further, the UPS includes a filter, a service Su1, a bypass Su2, an input Su3, a static Su4, a static Su5, an output Su6, a rectifier, an inverter, a charger, an input port, an output port, a battery input port, and a first communication port;
the output end of the input port is connected with the input end of the filter, the output ends of the filter are respectively connected with the input end of the charger, the input end of the input Su3, the input end of the bypass Su2 and the input end of the maintenance Su1, the output end of the charger is respectively connected with the output end of the rectifier, the input end of the inverter and the input end of the battery input port, the output end of the input Su3 is connected with the input end of the rectifier, the output end of the rectifier is respectively connected with the output end of the charger and the input end of the inverter, the output end of the inverter is connected with the input end of the static Su5, the output end of the static Su5 is respectively connected with the output end of the static Su 7 and the input end of the output Su6, the output end of the output Su6 is connected with the output end. Specifically, after the mains supply is input, the maintenance Su1, the bypass Su2 and the input Su3 are all in an open state, the input current passes through the filter and then enters the battery module through the charger, when the charger fails, the input Su3 is closed, the mains supply transmits the current to the battery module through the input Su3, when the input Su3 branch fails, the closed bypass Su2 mains supply transmits the current to the battery module through the input Su3, and the maintenance Su1 is used when the UPS fails.
Further, the high-voltage box comprises a pre-charging relay S1, a total positive relay S2, a charging relay S3, a DC inner relay S4, a DC outer relay S5, an air switch S6, a neutral relay S7, a total negative relay S8, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a wake-up key K1, a pre-charging resistor R1, a fuse 1, a fuse 2, a BCU, a second communication port, a third communication port and a Hall sensor;
the output end of a first communication port of the UPS module is connected with the input end of a second communication port of the high-voltage box, the output end of the second communication port is connected with the input end of the BCU, the output end of the BCU is connected with the input end of a third communication port, and the output end of the third communication port is connected with the communication port of the battery unit;
the positive pole of the battery input port is respectively connected with the negative pole of a diode D1, the input end of a charging relay S3 and the positive pole of a diode D3, the positive pole of the diode D1 is respectively connected with the input end of a pre-charging resistor R1, the output end of the charging relay S3 is connected with the input end of a general positive relay S2, the output end of the pre-charging resistor R1 is connected with the input end of the pre-charging relay S1, the output end of a pre-charging relay S1 is respectively connected with the output end of the general positive relay S2, the input end of a Hall sensor and the positive pole of a diode D2, the output end of the Hall sensor is connected with the input of a fuse 2, and the output of the;
the negative electrode of the diode D2 is respectively connected with the input end of the wake-up key K1 and the input end of the DC inner relay S4, the output end of the DC inner relay S4 is respectively connected with the output end of the wake-up key K1, the input end of the DC outer relay S5 and the input end of the idle switch S6, the output end of the DC outer relay S5 is connected with the negative electrode of the diode D3, the output end of the idle switch S6 is connected with the input end of the switching power supply, the output end of the switching power supply is connected with the input end of the fuse 1, the output end of the fuse 1 is respectively connected with the positive electrode of the diode D4 and the positive electrode of the diode D5, and the negative electrode of the diode D4 is respectively connected with the input end of the total negative relay S8; the output end of the total negative relay S8 is respectively connected with the negative electrode of the diode D5 and the negative electrode of the battery unit; specifically, the DC external relay S5 is used for charge protection.
The neutral line of the battery input port is connected to the input of a neutral line relay S7, and the output of neutral line relay S7 is connected to the neutral line of the battery cell. Specifically, the center line of the battery cell is connected to the battery pack M/2.
Furthermore, each battery unit comprises a slave control unit BMU of the lithium battery management system, a battery pack M, a first communication port of the battery pack M, a second communication port of the battery pack M and a fuse Fn; the output end of the fuse 2 is connected with the anode of the battery pack 1, the cathode of the battery pack is connected with the input end of the fuse F1, and the output end of the fuse F1 is connected with the anode of the battery pack 2; the output end of a fuse Fn of the battery pack M is respectively connected with the input end of the total negative relay S8 and the negative electrode of the diode D4; the battery pack consists of M lithium battery cells (BT1 … … BTN), where M is a positive integer.
The output end of the third communication port is connected to the input end of the first communication port of the battery pack 1, the BMU receives the information of the first communication port of the battery pack 1, processes the information and sends the processed information to the input end of the second communication port of the battery pack 1, and the output end of the second communication port of the battery pack 1 is connected with the input end of the first communication port of the battery pack 2; the first communication port and the second communication port are connected in series to the battery pack M-1 in the connection sequence, and the output end of the second communication port of the battery pack M-1 is connected with the input end of the first communication port of the battery pack M.
The operation process of the UPS lithium battery system with the master-slave architecture is as follows:
1) in the initial state, the pre-charging relay S1, the total positive relay S2, the charging relay S3, the DC inner relay S4, the DC outer relay S5, the air switch S6, the neutral relay S7 and the total negative relay S8 are all in an open state, and the DC outer relay S5 is in a closed state;
2) the starting mode of the system is divided into two modes: manual start and charge start, the concrete mode is as follows:
21) manual start operation: closing an air switch S6, manually pressing a wake-up key K1, conducting a switch power supply at the moment, providing a 12V power supply for the BMS, carrying out self-checking on the BMS, reporting a fault if the self-checking is unsuccessful, maintaining the system, carrying out a pre-charging process if the self-checking is successful, closing a total negative relay S8, closing a charging relay S3, and finally closing a pre-charging relay S1, comparing data of the outer total pressure with data of the inner total pressure at the moment, closing a total positive relay S2 after the compared data of the outer total pressure is 90% of the data of the inner total pressure, opening a pre-charging relay S1, and closing a neutral relay S7 at the last, namely, successfully starting.
22) A charge start operation: UPS passes through anodal and negative pole output voltage, switching power supply work provides the 12V power for BMS, BMS carries out the self-checking, if the self-checking is unsuccessful then report the trouble, the system carries out maintenance process, if the self-checking is successful, then carry out the preliminary filling process, BMS closes total negative relay S8 earlier, reclosing charging relay S3 again, last closed preliminary filling relay S1, compare the data of total pressure outside with the data of total pressure in this moment, the data of total pressure outside after the comparison is the data 90% of total pressure in, closed total positive relay S2, reopen preliminary filling relay S1, last closed neutral line relay S7, start successfully promptly.
3) The charging state is as follows: the commercial power inputs current through an input port of the UPS, the current flows into the filter for filtering, the filtered current enters the charger to convert alternating current into direct current, and the converted current flows into the high-voltage box and the M groups of battery units connected in series through the positive pole, the central line and the negative pole of the battery input port for charging;
4) and (3) charging protection operation: the BMS (battery management system, which is arranged in the high-voltage box and is the master control system of the high-voltage box) turns off the DC external relay S5, the charging relay S3 and the neutral relay S7, at the moment, the charging loop is cut off, and after the circuit is in a safe state, the BMS (battery management system, which is arranged in the high-voltage box and is the master control system of the high-voltage box) turns on the DC external relay S5, the charging relay S3 and the neutral relay S7;
5) and (3) discharging state: the positive pole, the neutral line and the negative pole of the UPS battery input port are communicated with the battery module, the inverter is opened, the static switch Su5 is closed, the switch Su6 is closed, and the system discharges through the output port;
6) discharge protection operation: the BMS (battery management system, which is arranged in the high-voltage box and is the master control system of the high-voltage box) turns off the total positive relay S2, the total negative relay S8 and the neutral relay S7, at the moment, the discharging loop is cut off, and after the circuit is in a safe state, the BMS (battery management system, which is arranged in the high-voltage box and is the master control system of the high-voltage box) turns on the BMS to turn off the total positive relay S2, the total negative relay S8 and the neutral relay S7;
7) powering off operation: the BMS (battery management system, which is arranged in the high-voltage box and is the main control system of the high-voltage box) cuts off the charging relay S3, the total positive relay S2, the total negative relay S8, the neutral relay S7 and the air switch S6, and cuts off a power supply loop of the switch, and the BMS (battery management system, which is arranged in the high-voltage box and is the main control system of the high-voltage box) enters a shutdown state;
to sum up, this application is through increasing high-voltage box and battery unit on the basis of UPS module to set up the data that communication port ability in time feedback detection electric core voltage, temperature on high-voltage box and battery unit, so that in time maintain, the power of equipment also can be controlled, the life of equipment has been improved in the lump, and simultaneously, the battery capacity of this system can be enlarged to the battery unit of increase, satisfy the power consumption demand under most of the circumstances, wherein, manual start or the start of charging can be realized to the design of this circuit, let the system function perfect more also improve work efficiency.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A UPS lithium battery system with a master-slave architecture is characterized by comprising a UPS module and a battery module,
the battery module comprises a high-voltage box and M groups of battery units which are connected in series, the UPS module is connected with the high-voltage box, and the high-voltage box is connected with the M groups of battery units which are connected in series;
the UPS module is provided with a first communication port, the high-voltage box is provided with a second communication port and a third communication port, and the M groups of battery units connected in series are provided with communication ports; the first communication port of the UPS module is connected with the second communication port of the high-voltage box, and the third communication port of the high-voltage box is connected with the communication port of the battery unit.
2. The UPS lithium battery system of claim 1, wherein the UPS comprises a filter, a service Su1, a bypass Su2, an input Su3, a static Su4, a static Su5, an output Su6, a rectifier, an inverter, a charger, an input port, an output port, a battery input port, and a first communication port;
the output end of the input port is connected with the input end of the filter, the output end of the filter is respectively connected with the input end of the charger, the input end of the input Su3, the input end of the bypass Su2 and the input end of the maintenance Su1, the output end of the charger is respectively connected with the output end of the rectifier, the input end of the inverter and the input end of the battery input port, the output end of the input Su3 is connected with the input end of the rectifier, the output end of the rectifier is respectively connected with the output end of the charger and the input end of the inverter, the output end of the inverter is connected with the input end of the static Su5, the output end of the static Su5 is respectively connected with the output end of the static Su4 and the input end of the output Su6, and the output end of the output Su6 is connected with the output end of the maintenance Su1, the first communication port is connected with the second communication port of the high-pressure box.
3. The UPS lithium battery system of claim 1, wherein the high voltage box comprises a pre-charge relay S1, a main positive relay S2, a charge relay S3, a DC internal relay S4, a DC external relay S5, an air switch S6, a neutral relay S7, a main negative relay S8, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a wake-up key K1, a pre-charge resistor R1, a fuse 1, a fuse 2, a BCU, a second communication port, a third communication port, a Hall sensor and a BMS;
the output end of a first communication port of the UPS module is connected with the input end of a second communication port of the high-voltage box, the output end of the second communication port is connected with the input end of the BCU, the output end of the BCU is connected with the input end of a third communication port, and the output end of the third communication port is connected with the communication port of the battery unit;
the positive electrode of the battery input port is connected with the negative electrode of the diode D1, the input end of the charging relay S3 and the positive electrode of the diode D3 respectively, the positive electrode of the diode D1 is connected with the input end of the pre-charging resistor R1 respectively, the output end of the charging relay S3 is connected with the input end of the main positive relay S2, the output end of the pre-charging resistor R1 is connected with the input end of the pre-charging relay S1, the output end of the pre-charging relay S1 is connected with the output end of the main positive relay S2, the input end of the hall sensor and the positive electrode of the diode D2 respectively, the output end of the hall sensor is connected with the input of the fuse 2, and the output of the fuse 2 is connected with the positive electrode of the battery unit;
the cathode of the diode D2 is connected to the input end of the wake-up key K1 and the input end of the DC internal relay S4, the output end of the DC internal relay S4 is connected to the output end of the wake-up key K1, the input end of the DC external relay S5 and the input end of the idle switch S6, the output end of the DC external relay S5 is connected to the cathode of the diode D3, the output end of the idle switch S6 is connected to the input end of the switching power supply, the output end of the switching power supply is connected to the input end of the fuse 1, the output end of the fuse 1 is connected to the anode of the diode D4 and the anode of the diode D5, and the cathode of the diode D4 is connected to the input end of the master negative relay S8 and the cathode of the battery of the group of M battery units connected in series; the output end of the total negative relay S8 is respectively connected with the negative electrode of the diode D5 and the negative electrode of the battery unit;
the neutral line of the battery input port is connected to the input of the neutral line relay S7, and the output of the neutral line relay S7 is connected to the neutral line of the battery cell.
4. The UPS lithium battery system of claim 3, wherein each battery cell comprises a slave control unit BMU of the lithium battery management system, the battery pack M, a first communication port of the battery pack M, and a second communication port of the battery pack M; the output end of the fuse 2 is connected with the positive electrode of the battery pack M, the negative electrode of the battery pack is connected with the input end of the total negative relay S8 and the negative electrode of the diode D4, and the battery packs M are mutually connected in series;
the output end of the third communication port is connected to the input end of the first communication port of the battery pack M, the BMU receives the information of the first communication port of the battery pack 1, processes the information and sends the processed information to the input end of the second communication port of the battery pack 1, and the output end of the second communication port of the battery pack M-1 is connected with the input end of the first communication port of the battery pack M.
5. The lithium-ion battery system according to claim 3, wherein the neutral line of the battery cells is connected to the battery pack M/2.
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| CN201911385267.6A CN110912260A (en) | 2019-12-28 | 2019-12-28 | Master-slave-structured UPS lithium battery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786455A (en) * | 2020-06-22 | 2020-10-16 | 深圳科士达科技股份有限公司 | A positive negative lithium cell parallel operation system for UPS |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786455A (en) * | 2020-06-22 | 2020-10-16 | 深圳科士达科技股份有限公司 | A positive negative lithium cell parallel operation system for UPS |
| CN111786455B (en) * | 2020-06-22 | 2023-12-26 | 深圳科士达科技股份有限公司 | Positive and negative lithium battery parallel operation system for UPS |
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