CN219554655U - Lithium battery pack high-voltage box of Uninterruptible Power Supply (UPS) without neutral line - Google Patents
Lithium battery pack high-voltage box of Uninterruptible Power Supply (UPS) without neutral line Download PDFInfo
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- CN219554655U CN219554655U CN202320078752.4U CN202320078752U CN219554655U CN 219554655 U CN219554655 U CN 219554655U CN 202320078752 U CN202320078752 U CN 202320078752U CN 219554655 U CN219554655 U CN 219554655U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A lithium battery pack high-voltage box of a neutral-line-free Uninterruptible Power Supply (UPS) comprises a high-voltage box body, a UPS module and a lithium battery module; the high-pressure box body also comprises a low-pressure loop and a high-pressure loop; the high-voltage loop consists of an anode loop and a cathode loop; the battery input positive electrode B+ pole terminal and the battery input negative electrode B-pole terminal are also respectively connected with a direct current breaker; the low voltage loop comprises two parallel lines. The utility model has compact and reasonable structure and convenient operation, and supplies power to the lithium battery module low-voltage system by connecting the DC/DC loop and the AC/DC loop in parallel, so that the BMS can directly adopt the commercial power and the battery to supply power, the problem that the lithium battery module low-voltage system power supply system must be separated from the commercial power is avoided, the requirements of the UPS on the site are reduced, and the utility model has strong practicability.
Description
Technical Field
The utility model relates to the technical field of energy storage, in particular to a lithium battery pack high-voltage box of a neutral line-free Uninterruptible Power Supply (UPS).
Background
In the high-voltage box of the prior art, a lithium battery module BMS (lithium battery management system) is powered by an external power supply system. Because the external power supply system is separated from the mains supply, the BMS can still keep working normally when the mains supply is disconnected, the external power supply system has higher requirements, and the field application compatibility of the UPS is reduced.
Therefore, a lithium battery pack high-voltage box of a neutral-line-free uninterruptible power supply UPS is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the lithium battery pack high-voltage box of the neutral line-free uninterruptible power supply UPS, which supplies power to the lithium battery module low-voltage system in parallel through the DC/DC loop and the AC/DC loop, so that the BMS can directly adopt commercial power and battery power to supply power, the problem that the lithium battery module low-voltage system power supply system must be separated from the commercial power is avoided, the site requirement of the UPS is reduced, and the lithium battery pack high-voltage box has very strong practicability.
The technical scheme adopted by the utility model is as follows:
a lithium battery pack high-voltage box of a neutral line-free Uninterruptible Power Supply (UPS) comprises a high-voltage box body, and a UPS module and a lithium battery module which are connected with the high-voltage box body; the high-pressure box body also comprises a low-pressure loop and a high-pressure loop; the high-voltage loop consists of an anode loop and a cathode loop; the positive electrode loop: the battery input positive electrode B+ electrode post terminal is connected with a fuse, a main positive contactor and an output positive electrode P+ electrode post terminal in series through a positive electrode matte nickel-plated copper bar; the negative electrode loop: a shunt, a main negative contactor and an output negative P-electrode terminal are connected in series through a negative matte nickel-plated copper bar by a battery input negative B-electrode terminal; the battery input positive electrode B+ pole terminal and the battery input negative electrode B-pole terminal are also respectively connected with a direct current breaker; the low-voltage loop comprises two parallel circuits, the single-phase output alternating current of the UPS module is converted into low voltage power through an AC/DC loop and a DC/DC loop which are arranged in parallel and supplies power to a lithium battery module low-voltage system, and the alternating current and the direct current are formed to be used as power output power supply together.
It is further characterized by:
the direct current breaker adopts a direct current breaker with a shunt release.
And the main positive contactor is connected with the pre-charging contactor and the pre-charging resistor in parallel by adopting a high-voltage wire harness.
The positive electrode and the negative electrode of the battery of the high-voltage loop are respectively provided with a main positive contactor and a main negative contactor, so that the situation that the battery loop cannot be disconnected due to the adhesion of a single contactor is prevented.
The DC/DC switching power supply is connected to the matte nickel-plated copper bar or other structures through a wire harness and is electrically connected to the high-voltage loop for power taking.
The AC/DC loop consists of an AC/DC switching power supply, an AC unidirectional diode, an AC power interface and related wire harnesses.
The DC/DC loop consists of a DC/DC switching power supply, a DC unidirectional diode, a DC contactor and related wire harnesses.
And a DC/DC air switch and an AC/DC air switch are respectively connected in series in the DC/DC loop and the AC/DC loop.
The battery input positive electrode B+ electrode terminal, the battery input negative electrode B-electrode terminal, the direct current breaker, the output positive electrode P+ electrode terminal, the output negative electrode P-electrode terminal and the DC/DC air switch; the switch lock and the AC power interface are arranged on the panel of the high-voltage box body, so that the circuit connection and the circuit switching with the outside are facilitated.
And the panel is also provided with a BMS debugging COM interface, a communication COM1 interface and a communication COM2 interface, and the connection between the BMS debugging COM interface, the communication COM1 interface and the communication COM2 interface and the lithium battery module and the UPS module is realized through the serial ports.
The beneficial effects of the utility model are as follows:
the utility model has compact and reasonable structure and convenient operation, and supplies power to the lithium battery module low-voltage system by connecting the DC/DC loop and the AC/DC loop in parallel, so that the BMS can directly adopt the commercial power and the battery to supply power, the problem that the lithium battery module low-voltage system power supply system must be separated from the commercial power is avoided, the requirements of the UPS on the site are reduced, and the utility model has strong practicability.
Meanwhile, the utility model has the following advantages:
1. the high-voltage loop design of the high-voltage box is characterized in that the positive electrode and the negative electrode of the battery are respectively provided with a contactor, so that the phenomenon that the battery loop cannot be disconnected due to the adhesion of a single contactor is prevented.
2. The low-voltage loop design of the high-voltage box adopts a DC/DC switching power supply and an AC/DC switching power supply (through an AC power interface) to output 24V in parallel to supply power to a low-voltage system of the lithium battery module; when the mains supply cannot supply power, the AC/DC switching power supply can be used for supplying power directly, and switching of a power supply circuit is avoided.
3. The low-voltage loop design of the high-voltage box is characterized in that unidirectional diodes for preventing circulation are respectively connected with the output of the DC/DC switching power supply and the output of the AC/DC switching power supply in series.
4. The low-voltage loop design of the high-voltage box adopts a loop consisting of a DC/DC switching power supply, a DC unidirectional diode, a DC contactor and a related wire harness as a power supply for continuously working of the BMS system in the high-voltage box when the commercial power is lost.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a top view of the present utility model.
Fig. 3 is a front view of the present utility model.
Wherein:
100. a battery input positive B+ post terminal; 001. the anode matte nickel-plated copper bar; 003. a direct current breaker; 101. a fuse; 102. a primary positive contactor; 103. outputting a positive electrode P+ post terminal; 110. pre-charging the contactor; 111. pre-charging a resistor;
200. a battery input negative B-pole terminal; 002. matte nickel-plated copper bars of the negative electrode; 201. a shunt; 202. a main negative contactor; 203. outputting a negative electrode P-pole terminal;
300. a DC/DC switching power supply; 301. a DC unidirectional diode; 302. a DC/DC air switch; 303. a switch lock; 304. a DC contactor;
400. an AC/DC switching power supply; 401. an AC unidirectional diode; 402. an AC/DC air switch; 403. an AC power interface;
500. BMS debugs COM interface; 501. a communication COM1 interface; 502. communication COM2 interface.
Detailed Description
The following describes specific embodiments of the present utility model with reference to the drawings.
As shown in fig. 1 to 3, the lithium battery pack high-voltage box of the neutral-line-free uninterruptible power supply UPS disclosed in this embodiment includes a low-voltage loop and a high-voltage loop:
high-pressure circuit:
the battery input positive electrode B+ post terminal 100 and the battery input negative electrode B-post terminal 200 are respectively bent through the positive matte nickel-plated copper bar 001 and the negative matte nickel-plated copper bar 002 and then connected with the direct current circuit breaker 003, and the direct current circuit breaker 003 is provided with a shunt release;
a fuse 101, a main positive contactor 102 and an output positive P+ post terminal 103 are connected in series on the positive circuit through a positive matte nickel-plated copper bar 001, and meanwhile, a high-voltage wire harness is adopted on the main positive contactor 102 to connect a pre-charge contactor 110 and a pre-charge resistor 111 in parallel; thereby effectively protecting the capacitor and the safety, and the main positive contactor 102; the direct power-on moment is prevented, the charging current may be too large, the capacitor may be damaged due to the excessive moment current, the switching devices such as the main positive contactor 102 and the like may be damaged, and the pre-charging resistor 111 can play a role in current limiting.
The negative electrode loop is connected with a shunt 201, a main negative contactor 202 and an output negative electrode P-pole terminal 203 in series through a negative electrode matte nickel-plated copper bar 002.
The high-voltage loop design of the high-voltage box adopts a pole post terminal which is easy to operate and has electric protection as a connector plug for battery input and output, thereby improving the quick connection effect.
The positive electrode and the negative electrode of the battery in the high-voltage loop are respectively provided with a contactor so as to prevent the battery loop from being disconnected due to the adhesion of a single contactor.
Low pressure circuit:
the low voltage loop includes two lines:
the UPS single-phase output alternating current is converted into 24V through an AC/DC loop (commercial power) to supply power for a BMS low-voltage system.
2. Supplying power to the BMS low-voltage system through converting the DC/DC loop to 24V; the DC/DC switching power supply 300 is electrically connected to the high voltage loop for power extraction by wiring harnesses to matte nickel plated copper bars or other structures.
When the equipment is powered by mains supply, an AC/DC loop is started to supply power to the lithium battery module low-voltage system, a DC contactor 304 is closed, the DC/DC loop simultaneously supplies power to the lithium battery module low-voltage system, and at the moment, alternating current and direct current are formed to be used as power output to supply power.
The AC/DC switching power supply 400 (via the AC power interface 403) and the DC/DC switching power supply 300 are output in parallel to the BMS, so that the BMS can directly adopt the mains supply and the battery to supply power, the problem that the power supply system of the lithium battery module low-voltage system must be separated from the mains supply is avoided, and the place requirement of the UPS is reduced.
To prevent the output of the DC/DC loop and the AC/DC loop from generating circulation, a DC unidirectional diode 301 and an AC unidirectional diode 401 are respectively connected in series on the output loop; in the DC/DC loop and the AC/DC output loop, a DC/DC air switch 302 and an AC/DC air switch 402 are connected in series;
the AC/DC loop is composed of an AC/DC switching power supply 400, an AC unidirectional diode 401, an AC power interface 403, and an associated wiring harness.
The DC/DC loop consists of a DC/DC switching power supply 300, a DC unidirectional diode 301, a DC contactor 304, and an associated harness.
If the mains supply is lost, the DC/DC switching power supply 300 can make the low-voltage DC power supply system in the high-voltage box continuously output 24v under the condition of taking the DC power, and after the bms obtains the power, the bms ensures that the main loop contactor and each monitoring control module continuously work.
As shown in fig. 3, a high-voltage box of a lithium battery pack of a neutral-line-free uninterruptible power supply UPS disclosed in this embodiment is provided with a battery input positive b+ pole terminal 100, a battery input negative B-pole terminal 200, a DC circuit breaker 003, an output positive p+ pole terminal 103, an output negative P-pole terminal 203, and a DC/DC air switch 302 on a panel thereof; the switch lock 303 and the AC power interface 403 facilitate line connection and loop switching with the outside;
meanwhile, a BMS debugging COM interface 500, a communication COM1 interface 501 and a communication COM2 interface 502 are also arranged on the panel, and connection with the BMS and connection with the UPS are realized through the serial ports.
The beneficial effects are as follows:
1. the DC/DC and the AC/DC loops are connected in parallel to supply power to the lithium battery module low-voltage system, so that the BMS can directly adopt commercial power and battery power, the problem that the lithium battery module low-voltage system power supply system must be separated from the commercial power is avoided, and the site requirement of the UPS is reduced.
2. The high-voltage loop design of the high-voltage box is characterized in that the positive electrode loop and the negative electrode loop of the battery are respectively provided with a contactor so as to prevent the battery loop from being disconnected due to the adhesion of a single contactor;
3. the low-voltage loop design of the high-voltage box adopts a DC/DC switching power supply 300 and an AC/DC switching power supply 400 (through an AC power interface 403) to output 24V in parallel to supply power to a lithium battery module low-voltage system; when the mains supply cannot supply power, the AC/DC switching power supply 400 can be used for supplying power directly, so that switching of a power supply circuit is avoided.
4. In the low-voltage loop design of the high-voltage box, unidirectional diodes for preventing circulation are respectively connected with the output of the DC/DC switching power supply 300 and the output of the AC/DC switching power supply 400 in series.
5. The low-voltage loop design of the high-voltage box adopts a loop consisting of a DC/DC switching power supply 300, a DC unidirectional diode 301, a DC contactor 304 and related wire harnesses as a power supply for continuously working of the BMS system in the high-voltage box when the commercial power is lost.
The above description is intended to illustrate the utility model and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the utility model.
Claims (10)
1. A lithium battery pack high-voltage box of a neutral line-free uninterruptible power supply UPS is characterized in that: the lithium battery module comprises a high-voltage box body, and a UPS module and a lithium battery module which are connected with the high-voltage box body; the high-pressure box body also comprises a low-pressure loop and a high-pressure loop;
the high-voltage loop consists of an anode loop and a cathode loop;
the positive electrode loop: a fuse (101), a main positive contactor (102) and an output positive P+ post terminal (103) are connected in series through a positive matte nickel-plated copper bar (001) by a battery input positive B+ post terminal (100);
the negative electrode loop: a current divider (201), a main negative contactor (202) and an output negative P-electrode terminal (203) are connected in series through a negative matte nickel-plated copper bar (002) by a battery input negative B-electrode terminal (200);
the battery input positive electrode B+ pole terminal (100) and the battery input negative electrode B-pole terminal (200) are also respectively connected with a direct current breaker (003);
the low-voltage loop comprises two parallel circuits, the single-phase output alternating current of the UPS module is converted into low voltage power through an AC/DC loop and a DC/DC loop which are arranged in parallel and supplies power to a lithium battery module low-voltage system, and the alternating current and the direct current are formed to be used as power output power supply together.
2. The lithium battery pack high voltage box of a neutral-less uninterruptible power supply UPS of claim 1, wherein: the direct current breaker (003) adopts a direct current breaker with a shunt release.
3. The lithium battery pack high voltage box of a neutral-less uninterruptible power supply UPS of claim 1, wherein: the main positive contactor (102) adopts a high-voltage wire harness to connect the pre-charging contactor (110) and the pre-charging resistor (111) in parallel.
4. The lithium battery pack high voltage box of a neutral-less uninterruptible power supply UPS of claim 1, wherein: the positive electrode and the negative electrode of the battery of the high-voltage loop are respectively provided with a main positive contactor (102) and a main negative contactor (202), so that the situation that the battery loop cannot be disconnected due to the adhesion of a single contactor is prevented.
5. The lithium battery pack high voltage box of a neutral-less uninterruptible power supply UPS of claim 1, wherein: the DC/DC switching power supply (300) is connected to the matte nickel-plated copper bar or is electrically connected to the high-voltage loop through a wire harness to take electricity.
6. The lithium battery pack high voltage box of a neutral-less uninterruptible power supply UPS of claim 1, wherein: the AC/DC loop is composed of an AC/DC switching power supply (400), an AC unidirectional diode (401), an AC power interface (403) and related wiring harnesses.
7. The lithium battery pack high voltage box of the neutral-less uninterruptible power supply UPS of claim 6, wherein: the DC/DC loop is composed of a DC/DC switching power supply (300), a DC unidirectional diode (301), a DC contactor (304) and related wiring harnesses.
8. The lithium battery pack high voltage box of the neutral-less uninterruptible power supply UPS of claim 7, wherein: the DC/DC loop and the AC/DC loop are also respectively connected with a DC/DC air switch (302) and an AC/DC air switch (402) in series.
9. The lithium battery pack high voltage box of a neutral-less uninterruptible power supply UPS of claim 1, wherein: the battery input positive electrode B+ pole terminal (100), the battery input negative electrode B-pole terminal (200), the direct current breaker (003), the output positive electrode P+ pole terminal (103), the output negative electrode P-pole terminal (203) and the DC/DC air switch (302); the switch lock (303) and the AC power interface (403) are arranged on the panel of the high-voltage box body, so that the circuit connection and the circuit switching with the outside are facilitated.
10. The lithium battery pack high voltage box of the neutral-less uninterruptible power supply UPS of claim 9, wherein: the panel is also provided with a BMS debugging COM interface (500), a communication COM1 interface (501) and a communication COM2 interface (502), and the connection with the lithium battery module and the UPS module is realized through the serial ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320078752.4U CN219554655U (en) | 2023-01-10 | 2023-01-10 | Lithium battery pack high-voltage box of Uninterruptible Power Supply (UPS) without neutral line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320078752.4U CN219554655U (en) | 2023-01-10 | 2023-01-10 | Lithium battery pack high-voltage box of Uninterruptible Power Supply (UPS) without neutral line |
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| Publication Number | Publication Date |
|---|---|
| CN219554655U true CN219554655U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320078752.4U Active CN219554655U (en) | 2023-01-10 | 2023-01-10 | Lithium battery pack high-voltage box of Uninterruptible Power Supply (UPS) without neutral line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219554655U (en) |
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2023
- 2023-01-10 CN CN202320078752.4U patent/CN219554655U/en active Active
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