CN216056418U - Electrical system device applied to lithium battery charging and discharging management - Google Patents
Electrical system device applied to lithium battery charging and discharging management Download PDFInfo
- Publication number
- CN216056418U CN216056418U CN202122379418.6U CN202122379418U CN216056418U CN 216056418 U CN216056418 U CN 216056418U CN 202122379418 U CN202122379418 U CN 202122379418U CN 216056418 U CN216056418 U CN 216056418U
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- charging
- contactor
- discharging
- energy storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
-
- 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
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
-
- 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
- Y04S20/242—Home appliances
-
- 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
- Y04S20/248—UPS systems or standby or emergency generators
Abstract
The utility model relates to the technical field of lithium battery energy storage and UPS (uninterrupted power supply), in particular to an electrical system device applied to lithium battery charging and discharging management, which comprises an energy storage battery module formed by connecting a plurality of battery packs in series, wherein a charging and discharging end of the energy storage battery module is provided with a lithium battery management system for automatically controlling the closing and the disconnection of a lithium battery charging and discharging loop, and a charging and discharging end of the lithium battery management system is provided with an inverter; the lithium battery management system comprises a charge and discharge protection circuit connected with the charge and discharge end of the energy storage battery module in series and also comprises a BMS main control panel for independently controlling the charge and discharge protection circuit. The lithium battery management system is used for monitoring and protecting the charging and discharging process in real time and can be communicated with the UPS or the inverter, so that the whole system can run safely and reliably, the voltage and temperature state of the lithium battery can be monitored in real time, the damage to the lithium battery due to overcharge or overdischarge is reduced, and the cycle service life of the lithium battery is prolonged.
Description
Technical Field
The utility model relates to the technical field of lithium battery energy storage and UPS (uninterrupted power supply), in particular to an electrical system device applied to lithium battery charging and discharging management.
Background
The current energy storage and UPS batteries are generally lead-acid batteries, and due to the rapid development of domestic lithium battery technology in recent years, the replacement of the lead-acid batteries by the lithium batteries is the current mainstream trend, and the lithium batteries have absolute advantages in cost price, energy density and cycle service life.
At present, the energy storage lithium battery is generally applied to a high-voltage system, and the maximum voltage reaches 1000V; the UPS mainly solves the problem of short-time power backup after power failure, the short-time power backup needs a lithium battery with higher discharge rate, and the BMS needs larger discharge power to meet the load requirement, but the lithium battery has the defect that the battery is easy to damage due to overcharge or overdischarge, and the charging and discharging process in a battery management system lacks a real-time monitoring and protecting function, so that the lithium battery is damaged due to overcharge or overdischarge, and the service life of the lithium battery in recycling is shortened.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides an electrical system device applied to lithium battery charging and discharging management, and solves the problem that the battery management system lacks real-time monitoring and protection functions in the charging and discharging process.
(II) technical scheme
In order to solve the technical problems, the utility model provides the following technical scheme: an electrical system device applied to lithium battery charging and discharging management comprises an energy storage battery module formed by connecting a plurality of battery packs in series, wherein a charging and discharging end of the energy storage battery module is provided with a lithium battery management system for automatically controlling the charging and discharging of a lithium battery to be closed and opened, and a charging and discharging end of the lithium battery management system is provided with an inverter;
the lithium battery management system comprises a charge and discharge protection circuit connected with a charge and discharge end of the energy storage battery module in series, and further comprises a BMS main control board for automatically controlling the charge and discharge protection circuit, wherein the charge and discharge protection circuit is provided with a high-voltage detection board for detecting the voltage of an external direct-current bus, the high-voltage detection board is in communication connection with the BMS main control board through RS485, and the charge and discharge protection circuit is provided with a power supply module for supplying power to the BMS main control board and other peripheral facilities;
the charging and discharging protection circuit comprises a direct current circuit breaker connected with the energy storage battery module, a direct current contactor is connected to the positive electrode and the negative electrode of the direct current circuit breaker, and an anti-reverse diode is connected to the direct current contactor in parallel.
Further, the direct current contactor comprises a main contactor consisting of KM1, KM2, KM3 and KM4 and a pre-charging contactor consisting of KM5 and KM6, wherein the main contactor KM1 and KM3 are connected in series on B +, and the main contactor KM2 and KM4 are connected in series on B-.
Further, pre-charging contactor KM5 is connected in parallel between main contactor KM1 and KM3, pre-charging contactor KM6 is connected in parallel between main contactor KM2 and KM4, and pre-charging resistors R1 and R2 are respectively connected in series on the terminals of pre-charging contactors KM5 and KM 6.
Furthermore, the direct current circuit breaker is connected in series with the terminals B +, B-and N of the energy storage battery module, and the inverter is connected in series with the terminals P +, P-and N of the direct current contactor.
Further, the power supply module is composed of a DC power supply module and an AC power supply module, and the AC power supply module inputs 220V or 110V external alternating current power supply.
Further, the BMS main control board is equipped with current detection's link, and this link is connected with and is used for measuring main loop current value hall current sensor, and the BMS main control board is equipped with circuit breaker control end and contactor control end, and the link of BMS main control board is connected with pilot lamp and display screen.
Further, the BMS main control board is in communication connection with the inverter through RS485 or CAN, and the BMS main control board is in communication with the energy storage battery module through CAN.
(III) advantageous effects
The utility model provides an electrical system device applied to lithium battery charging and discharging management, which has the following beneficial effects:
the lithium battery management system is used for monitoring and protecting the charging and discharging process in real time, and can be communicated with the UPS or the inverter, so that the whole system can run safely and reliably, and is provided with the charging and discharging protection circuit which can automatically control the charging and discharging loop of the lithium battery to be closed and disconnected, the voltage and temperature state of the lithium battery can be monitored in real time, the damage to the lithium battery due to overcharge or overdischarge is reduced, and the cycle service life of the lithium battery is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic block diagram of a lithium battery charge and discharge management electrical system of the present invention;
FIG. 2 is a schematic block diagram of a lithium battery management system of the present invention;
fig. 3 is a circuit diagram of the charge and discharge protection circuit according to the present invention.
In the figure: 1. an energy storage battery module; 2. a lithium battery management system; 3. an inverter; 21. a charge and discharge protection circuit; 211. a direct current breaker; 212. a DC contactor; 213. an anti-reverse diode; 22. a BMS main control board; 23. a high-voltage detection plate; 24. and a power supply module.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
FIGS. 1-3 illustrate one embodiment of the present invention: an electrical system device applied to lithium battery charging and discharging management comprises an energy storage battery module 1 formed by connecting a plurality of battery packs in series, a lithium battery management system 2 for automatically controlling the closing and the opening of a lithium battery charging and discharging loop is arranged at the charging and discharging end of the energy storage battery module 1, an inverter 3 is arranged at the charging and discharging end of the lithium battery management system 2, a structural case is arranged outside the device, the utility model is used for installing and fixing the main components, monitors and protects the charging and discharging process in real time through the lithium battery management system, the system can communicate with a UPS or an inverter, so that the whole system can run safely and reliably, has a charge-discharge protection circuit for automatically controlling the closing and the disconnection of a charge-discharge loop of the lithium battery, can monitor the voltage and the temperature state of the lithium battery in real time, reduces the damage of the lithium battery due to overcharge or overdischarge, and prolongs the cycle service life of the lithium battery;
the lithium battery management system 2 comprises a charge and discharge protection circuit 21 connected with the charge and discharge end of the energy storage battery module 1 in series, and further comprises a BMS main control panel 22 for automatically controlling the charge and discharge protection circuit 21, wherein the BMS main control panel 22 is mainly used for controlling the main opening and closing according to the battery and other external conditions, communicating with the outside to monitor the real-time state and store important data, the charge and discharge protection circuit 21 is provided with a high-voltage detection panel 23 for detecting the voltage of an external direct-current bus, the high-voltage detection panel 23 is used for detecting the voltage of the external direct-current bus, the high-voltage detection panel 22 is in communication connection with the BMS main control panel 22 through RS485, the charge and discharge protection circuit 21 is provided with a power supply module 24 for supplying power to the BMS main control panel 22 and other peripheral facilities, the power supply module 24 is composed of a DC power supply module and an AC power supply module, the AC power supply module inputs an external alternating-current power supply of 220V or 110V, and the power supply module 24 is mainly used for supplying power to the BMS main control panel 22 and other peripheral facilities, the BMS main control board 22 is provided with a current detection connecting end, the connecting end is connected with a Hall current sensor for measuring the current value of the main loop, the Hall current sensor is used for measuring the current value of the main loop, the BMS main control board 22 is provided with a circuit breaker control end and a contactor control end, the connecting end of the BMS main control board 22 is connected with an indicator lamp and a display screen, the BMS main control board 22 is in communication connection with the inverter 3 through RS485 or CAN, and the BMS main control board 22 is in communication with the energy storage battery module 1 through CAN;
the charging and discharging protection circuit 21 comprises a direct current breaker 211 connected with the energy storage battery module 1, the direct current breaker 211 can be manually closed and opened a main loop, and has short circuit protection and overload protection functions, and can be opened by controlling a shunt release, a direct current contactor 212 is connected to the positive pole and the negative pole of the direct current breaker 211, the direct current contactor 212 can open or close a circuit by controlling the coil thereof, an anti-reverse diode 213 is connected in parallel to the direct current contactor 212, the anti-reverse diode 213 is mainly used for cutting off reverse current, the direct current breaker 211 is connected in series to the terminals B +, B-, and N of the energy storage battery module 1, the inverter 3 is connected in series to the terminals P +, P-, and N of the direct current contactor 212, the direct current contactor 212 comprises a main contactor consisting of KM1, KM2, KM3 and KM4, and a pre-charging contactor consisting of KM5 and KM6, the system is used for starting pre-charging, the system is kept disconnected after pre-charging is finished, main contactors KM1 and KM3 are connected in series with B +, main contactors KM2 and KM4 are connected in series with B-, pre-charging contactor KM5 is connected in parallel between main contactors KM1 and KM3, pre-charging contactor KM6 is connected in parallel between main contactors KM2 and KM4, and pre-charging resistors R1 and R2 are respectively connected in series with the end poles of pre-charging contactors KM5 and KM 6.
The utility model can meet the short-time discharge requirement of 500KW (1000V 500A) power at most, and the device also supports the functions of 16 parallel machines at most: the maximum total discharge power is equal to 16 times of the rated discharge power of a single unit, and the utility model can be applied to the UPS of a three-wire system and a two-wire system and is mainly applied to the fields of lithium battery UPS (emergency power supply), energy storage and other non-power batteries.
The following different states exist when the embodiment works:
1. when the system battery has no abnormal condition:
the circuit breaker is closed, the KM1, the KM2, the KM3 and the KM4 are closed, the KM5 and the KM6 are disconnected, and the system can be charged or discharged.
2. When the lithium battery has current overcurrent in the charging process, or the battery is in overvoltage or the temperature of the battery is overhigh and other protection conditions:
the BMS control board disconnects KM3 and KM4, so that the system cannot be recharged, can only discharge, and can be recovered when the above protection conditions are removed.
3. When the lithium battery has current overcurrent or battery undervoltage or battery temperature overhigh protection conditions and the like in the discharging process:
the BMS control board controls to disconnect the KM1 and the KM2, so that the system cannot be discharged any more, only can be charged, and can be recovered when the above protection conditions are removed.
4. When the system is short-circuited, a direct current contactor fails or other extreme conditions, the direct current breaker is triggered to trip.
The BMS main control board 22 is also communicated with a slave BMU on the energy storage battery module 1 to monitor the battery state in real time; in addition, communication is also established with an external device UPS/inverter/GBMS, and the communication is cooperated with the external device UPS/inverter/GBMS to ensure safe and reliable operation of the lithium battery in the charging and discharging process.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an be applied to lithium cell charge-discharge management's electric system device, includes energy storage battery module (1) that constitutes by a plurality of group battery looks series connection, its characterized in that: a lithium battery management system (2) for automatically controlling the closing and the opening of a lithium battery charging and discharging loop is arranged at the charging and discharging end of the energy storage battery module (1), and an inverter (3) is arranged at the charging and discharging end of the lithium battery management system (2);
the lithium battery management system (2) comprises a charge and discharge protection circuit (21) connected with a charge and discharge end of the energy storage battery module (1) in series and a BMS main control board (22) for automatically controlling the charge and discharge protection circuit (21), wherein the charge and discharge protection circuit (21) is provided with a high-voltage detection board (23) for detecting the voltage of an external direct-current bus, the high-voltage detection board (23) is in communication connection with the BMS main control board (22) through RS485, and the charge and discharge protection circuit (21) is provided with a power supply module (24) for supplying power to the BMS main control board (22) and supplying power to other peripheral facilities;
the charging and discharging protection circuit (21) comprises a direct current breaker (211) connected with the energy storage battery module (1), a direct current contactor (212) is connected to the positive electrode and the negative electrode of the direct current breaker (211), and an anti-reverse diode (213) is connected to the direct current contactor (212) in parallel.
2. The electrical system device applied to lithium battery charging and discharging management according to claim 1, wherein: the direct current contactor (212) comprises a main contactor consisting of KM1, KM2, KM3 and KM4 and also comprises a pre-charging contactor consisting of KM5 and KM6, wherein the main contactor KM1 and KM3 are connected in series on B +, and the main contactor KM2 and KM4 are connected in series on B-.
3. The electrical system device applied to lithium battery charging and discharging management according to claim 2, wherein: precharge contactor KM5 is connected in parallel between main contactor KM1 and KM3, precharge contactor KM6 is connected in parallel between main contactor KM2 and KM4, and precharge resistors R1 and R2 are respectively connected in series on the end poles of precharge contactors KM5 and KM 6.
4. The electrical system device applied to lithium battery charging and discharging management according to claim 1, wherein: the direct current breaker (211) is connected in series with the terminals B +, B-and N of the energy storage battery module (1), and the inverter (3) is connected in series with the terminals P +, P-and N of the direct current contactor (212).
5. The electrical system device applied to lithium battery charging and discharging management according to claim 1, wherein: the power supply module (24) is composed of a DC power supply module and an AC power supply module, and the AC power supply module inputs 220V or 110V external alternating current power supply.
6. The electrical system device applied to lithium battery charging and discharging management according to claim 1, wherein: BMS main control board (22) are equipped with current detection's link, and this link is connected with and is used for measuring main loop current value hall current sensor, and BMS main control board (22) are equipped with circuit breaker control end and contactor control end, and the link of BMS main control board (22) is connected with pilot lamp and display screen.
7. The electrical system device applied to lithium battery charging and discharging management according to claim 1, wherein: the BMS main control board (22) is in communication connection with the inverter (3) through RS485 or CAN, and the BMS main control board (22) is in communication with the energy storage battery module (1) through the CAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122379418.6U CN216056418U (en) | 2021-09-29 | 2021-09-29 | Electrical system device applied to lithium battery charging and discharging management |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122379418.6U CN216056418U (en) | 2021-09-29 | 2021-09-29 | Electrical system device applied to lithium battery charging and discharging management |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056418U true CN216056418U (en) | 2022-03-15 |
Family
ID=80607671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122379418.6U Active CN216056418U (en) | 2021-09-29 | 2021-09-29 | Electrical system device applied to lithium battery charging and discharging management |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780721A (en) * | 2023-08-15 | 2023-09-19 | 成都特隆美储能技术有限公司 | BMS control method for optimizing energy storage battery cluster |
| CN116826931A (en) * | 2023-08-29 | 2023-09-29 | 成都特隆美储能技术有限公司 | Circuit connection method for improving efficiency of power loop of energy storage battery cluster |
| CN117318253A (en) * | 2023-11-30 | 2023-12-29 | 杭州科工电子科技股份有限公司 | Anti-reverse connection system of direct current circuit of bus cabinet of energy storage system and alarm method thereof |
-
2021
- 2021-09-29 CN CN202122379418.6U patent/CN216056418U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780721A (en) * | 2023-08-15 | 2023-09-19 | 成都特隆美储能技术有限公司 | BMS control method for optimizing energy storage battery cluster |
| CN116826931A (en) * | 2023-08-29 | 2023-09-29 | 成都特隆美储能技术有限公司 | Circuit connection method for improving efficiency of power loop of energy storage battery cluster |
| CN117318253A (en) * | 2023-11-30 | 2023-12-29 | 杭州科工电子科技股份有限公司 | Anti-reverse connection system of direct current circuit of bus cabinet of energy storage system and alarm method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216056418U (en) | Electrical system device applied to lithium battery charging and discharging management | |
| CN108683202B (en) | Energy storage system | |
| KR101304397B1 (en) | Lithium iron battery-based direct current power supply emergency response system for transformer substation | |
| CN111525642B (en) | Low-voltage parallel battery management system and method | |
| CN102664454B (en) | Non-floating charging type substation direct current power supply system based on iron lithium battery | |
| CN210137209U (en) | Portable integrated uninterruption ac/dc power source | |
| WO2009030101A1 (en) | Online passive maintaining device for large capacity sealed lead-acid accumulator | |
| CN110932357A (en) | Energy storage device | |
| CN106787045B (en) | Direct current power supply system and control method thereof | |
| CN111786455B (en) | Positive and negative lithium battery parallel operation system for UPS | |
| CN106058997A (en) | Internal combustion generator electrical system and power supply method thereof | |
| CN109245283A (en) | Reserve battery monitoring system and the switching of uninterrupted power supply intelligence and monitoring system | |
| CN204243884U (en) | For the supply unit of distribution terminal | |
| CN209056972U (en) | Nickel-metal hydride battery UPS control system | |
| CN112087017B (en) | Battery management system and battery management method for direct-current power supply of transformer substation | |
| CN104882936B (en) | Communication energy storage power supply system | |
| CN211605342U (en) | Base station retired battery intelligent management system | |
| CN212162855U (en) | High-voltage distribution box for energy storage system | |
| CN113644704A (en) | Two-way battery charging and discharging constant current control and circulating current suppression device, power supply and method | |
| CN115714441A (en) | Charging and discharging control system and control method | |
| CN203983968U (en) | A kind of ferric phosphate lithium cell group baffle | |
| CN202550664U (en) | Direct current power supply system of non-floating charge type transformer substation based on lithium iron battery | |
| CN215817643U (en) | Novel charging and discharging lithium battery UPS power supply for machine room | |
| CN207117203U (en) | A kind of lithium-ion energy storage unit and unit group | |
| CN113328501B (en) | Flexible connection device and framework of energy station direct current screen battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |