CN117239263B - Remote on-line operation and maintenance management system for storage battery - Google Patents
Remote on-line operation and maintenance management system for storage battery Download PDFInfo
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- CN117239263B CN117239263B CN202311507704.3A CN202311507704A CN117239263B CN 117239263 B CN117239263 B CN 117239263B CN 202311507704 A CN202311507704 A CN 202311507704A CN 117239263 B CN117239263 B CN 117239263B
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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
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- 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
Abstract
A remote on-line operation and maintenance management system of a storage battery belongs to the technical field of operation and maintenance management systems and aims to solve the problems that the battery performance is unreliable in data support, low in working efficiency and unscientific in maintenance at the present stage; according to the invention, a distributed online monitoring scheme is adopted by the monitoring unit, the single acquisition module is arranged on each storage battery of the storage battery pack, the single acquisition module monitors running data such as voltage, charge and discharge current and the like of the storage battery in real time, the collected information is uploaded to the main control module through the collecting module, the collecting module uploads the storage battery data acquired by each base station in real time to the database and the data intelligent management platform in a cloud data mode for remote display supervision, and the data intelligent management platform automatically formulates a discharge test of the storage battery pack based on the uploaded data for storage, so that the control unit is controlled to regulate charge and discharge of the storage battery pack, and targeted remote operation management regulation and control of each storage battery of the storage battery pack is realized.
Description
Technical Field
The invention relates to the technical field of operation and maintenance management systems, in particular to a remote online operation and maintenance management system for a storage battery.
Background
A battery is an electrochemical device that stores chemical energy and, if necessary, emits electrical energy. The device that converts chemical energy into electrical energy is called a chemical battery, commonly referred to simply as a battery. After discharge, the internal active species can be regenerated by means of charging—storing electrical energy as chemical energy; when discharge is required, chemical energy is converted into electric energy again. Such batteries are referred to as storage batteries, also known as secondary batteries or lead acid storage tanks.
At present, parameters such as floating charge voltage, current and the like are simply monitored, and the problem in the operation of the storage battery pack cannot be effectively found in time; the lack of scientific and accurate mastering of the performance of the battery pack leads to the existence of great hidden trouble in the backup storage battery pack; the quality of the single performance in the battery pack directly determines the standby power supply time of the battery pack, manual test is adopted, the test data are manually summarized, the efficiency is low, statistics is incomplete, the authenticity and accuracy of the data are difficult to guarantee, the data which change in real time cannot be supported and controlled, for example, the whole performance of a certain battery pack is reduced due to the degradation of the single performance, however, the whole battery pack is difficult to find and exclude the fallen single unit in time without the support of the operation data of the battery pack, even the whole battery pack is eliminated and replaced, the cost for purchasing the battery is increased, and the aims of maintaining and managing the performance of the battery pack are not mainly solved. Therefore, the battery pack can be really supported by collecting the single voltage, the pack end voltage, the discharge current and the discharge capacity of the storage battery in real time, and the requirement of preventive maintenance is met.
Therefore, a remote on-line operation and maintenance management system of the storage battery is provided.
Disclosure of Invention
The invention aims to provide a remote on-line operation and maintenance management system for storage batteries, which aims to solve the problems of unreliable data support, low working efficiency and unscientific maintenance of battery performance in the prior art, and aims to utilize a full on-line operation and maintenance system for the storage batteries to replace a traditional monitoring and maintenance mode, construct a powerful background analysis and management platform, realize centralized management of storage battery test data of all stations, comprehensively and timely know the actual performance condition of all storage battery packs, timely process the battery packs with single lag, eliminate potential safety hazards and ensure normal uninterrupted operation of the system.
In order to achieve the above purpose, the present invention provides the following technical solutions: a remote on-line operation and maintenance management system for a storage battery, comprising:
the monitoring unit is used for carrying out data monitoring on each storage battery of the storage battery pack in the base station, the node station, the bus station and the central machine room, and collecting the voltage, current and power data of the operation work of each storage battery in real time;
the monitoring unit comprises a control unit for controlling the control unit,
the single body acquisition module is used for being arranged on each storage battery of the storage battery pack, monitoring and acquiring voltage, internal resistance and temperature data of positive/negative poles of the storage battery in real time, transmitting the monitoring data to the collecting module through an RS485 line,
the converging module is used for converging the voltage, current and power data of each storage battery during the operation, which are monitored and collected by each single collecting module, uploading the collected storage battery information to the main control module,
the current detector is used for carrying out eddy current detection on the storage battery pack and determining the current in a storage battery pack circuit;
the main control module is used for controlling the system equipment to run autonomously, and sending and feeding back the storage battery monitoring data of the base station, the node station, the bus station and the central machine room to the intelligent maintenance terminal through a wired network so as to enable staff to check the storage battery monitoring data;
the control unit is used for being controlled by the main control module to execute instructions, controlling, switching and adjusting the working running state of each storage battery of the storage battery pack so as to carry out running maintenance on the storage battery pack;
the system comprises a base station, a node station, a bus station and a central machine room, wherein the base station is used for receiving and storing storage battery monitoring data sent by the base station, the node station, the bus station and the central machine room in a cloud data mode, and the data intelligent management platform is used for automatically making a discharge test of a storage battery pack according to the base station, the node station, the bus station and the central machine room which generate superior management indexes and release information in real time, and controlling and adjusting the working state of the storage battery pack so as to operate, maintain and manage the storage battery.
Further, the system also comprises a control unit,
the display module is used for being connected with the main control module to receive the real-time monitoring data of the storage battery, and carrying out the real-time monitoring data throwing display of the storage battery through being connected with the display large screen so as to enable a worker to carry out remote supervision and check, and the charging and discharging of the storage battery pack are directly controlled through the display large screen.
Further, the database and the data intelligent management platform are arranged in the network management center and are used for carrying out remote monitoring and monitoring data storage on the storage battery in the base station, the node station, the bus station and the central machine room, and the control unit is arranged in each base station, the node station, the bus station and the central machine room and is used for carrying out operation and maintenance management and control on the storage battery.
Further, the control unit comprises a control unit,
the switching module is used for switching and adjusting circuit connection between the storage battery pack, the inversion module and the power supply, so that two working modes of current limiting charging and checkable discharging of the storage battery pack are adjusted;
the inversion module is used for remotely and automatically controlling the storage battery pack when the storage battery pack is subjected to checkup discharge, inverting the electric quantity of each storage battery of the storage battery pack into alternating current and feeding the alternating current back to the power grid;
the current-limiting charging module is used for connecting the storage battery pack, and has a current-limiting effect on current when the storage battery pack is charged, so that the storage battery pack is charged in three stages of constant current, constant voltage and trickle;
the discharging module is an electricity load and is used for being connected with the storage battery pack after being connected with the current-limiting charging module in parallel, and electricity consumption is carried out when the storage battery pack is in a discharging mode.
Further, the control unit further comprises,
and the power module is used for adjusting the running power of the storage battery pack, automatically adjusting the running power when the storage battery pack discharges, and adjusting the storage battery pack to the set discharge current to perform constant current discharge.
Further, the switching module comprises a normally open contactor K2 connected with the positive electrode of the storage battery, the other end of the normally open contactor K2 is connected to a node between the inversion module and the current-limiting charging module, a normally closed contactor K11 is connected to a node between the normally open contactor K2 and the positive electrode of the storage battery, the other end of the normally closed contactor K11 is connected with a normally open contactor K1, the other end of the normally open contactor K1 is connected with the current-limiting charging module, a diode D1 is connected to a node between the normally open contactor K1 and the normally closed contactor K11, and the other end of the diode D1 is connected to a node between the normally open contactor K2 and the normally closed contactor K11.
Further, the switching module further comprises a normally open contactor K3 connected with the negative electrode of the storage battery, the other end of the normally open contactor K3 is connected to a node between the inversion module and the current-limiting charging module, a normally closed contactor K12 is connected to a node between the normally open contactor K3 and the negative electrode of the storage battery, the other end of the normally closed contactor K12 is connected with a normally open contactor K4, the other end of the normally open contactor K4 is connected with the current-limiting charging module, a diode D2 is connected to a node between the normally open contactor K4 and the normally closed contactor K12, and the other end of the diode D2 is connected to a node between the normally open contactor K3 and the normally closed contactor K12.
Further, one ends of the normally closed contactor K11 and the normally closed contactor K12, which are far away from the anode and the cathode of the storage battery, are respectively connected with binding posts of a power supply, and the power supply and the discharging module, namely the electric load, are arranged in parallel.
Further, the inverter module is a feedback inverter, and comprises a DC/DC converter and a DC/AC inverter, wherein the DC/DC converter and the DC/AC inverter are jointly packaged in a shell, two connection ports of the DC/DC converter are respectively connected with positive and negative poles of the storage battery pack, and the DC/AC inverter is connected with L1, L2, L3 and N interfaces of a power grid.
Further, the DC/DC converter converts the direct current voltage into high-voltage direct current in a constant current mode, the feedback type DC/AC inverter feeds the high-voltage direct current output by the DC/DC converter back to a power grid, the maximum feedback power is 20KW, the DC/AC inverter is communicated with an upper computer through RS485, receives relevant information of working modes, on-off instructions and discharge current value setting, and reports relevant working states of the inverter.
Compared with the prior art, the invention has the following beneficial effects:
1. the remote on-line operation and maintenance management system for the storage battery provided by the invention can monitor on line: the storage battery pack is monitored in real time on line, such as the voltage of each single body, the temperature of the cathode pole, the internal resistance of the single body, the voltage of the pack end, the charging and discharging current and the like, and the data are uploaded to background software and are stored regularly, so that the data intelligent management platform is used for effectively and remotely monitoring each storage battery of the storage battery pack, and remote operation and maintenance management is convenient to carry out on each storage battery according to the data in a targeted manner.
2. The remote on-line operation and maintenance management system of the storage battery provided by the invention can remotely check the capacity: the storage battery pack can be subjected to checkup discharging and remote automatic control, the electric quantity of the storage battery is inverted into alternating current which is fed back to the power grid, rapid discharging and relieving of each storage battery of the storage battery pack when the electric quantity is too high are realized, and damage to the storage battery caused by too high electric quantity is avoided.
3. The remote on-line operation and maintenance management system for the storage battery provided by the invention can be used for carrying out three-section charging: after discharging, the system is in a charging mode for the storage battery pack, charging in three stages of constant current, constant voltage and trickle is realized based on the current-limiting charging module, the service life of the storage battery is prevented from being influenced by the fact that the storage battery is impacted by excessive pressure difference and large current, and the storage battery is charged more saturated by the three-stage charging energy.
Drawings
FIG. 1 is a system topology of the present invention;
FIG. 2 is a topology of a monitoring unit of the present invention;
fig. 3 is a circuit diagram of the switching module, the inverting module and the current limiting charging module of the present invention;
fig. 4 is a circuit diagram of an inverter module of the present invention;
fig. 5 is a block diagram of the overall architecture of the system of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the problems of unreliable data support, low working efficiency and unscientific maintenance of the battery performance in the present stage, please refer to fig. 1, 2 and 5, the following preferred technical scheme is provided:
a remote on-line operation and maintenance management system for a storage battery, comprising:
the monitoring unit is used for carrying out data monitoring on each storage battery of the storage battery pack in the base station, the node station, the bus station and the central machine room, and collecting the voltage, current and power data of the operation work of each storage battery in real time;
the monitoring unit comprises a control unit for controlling the control unit,
the single body acquisition module is used for being arranged on each storage battery of the storage battery pack, monitoring and acquiring data such as voltage, internal resistance, temperature of positive/negative poles, charging and discharging current and the like of the storage battery in real time (without limiting the range), transmitting the monitoring data to the collecting module through an RS485 line, timely finding out the thermal runaway of the battery and the connection problem of a connecting strip through monitoring the temperature of the pole, avoiding accidents such as explosion, fire disaster and the like caused by high temperature during discharging,
the converging module is used for converging the voltage, current and power data of each storage battery during the operation, which are monitored and collected by each single collecting module, uploading the collected storage battery information to the main control module,
the current detector is used for carrying out eddy current detection on the storage battery pack and determining the current in a storage battery pack circuit;
the main control module is used for controlling the system equipment to run autonomously, and sending and feeding back the storage battery monitoring data of the base station, the node station, the bus station and the central machine room to the intelligent maintenance terminal through a wired network so as to enable staff to check the storage battery monitoring data;
the control unit is used for being controlled by the main control module to execute instructions, controlling, switching and adjusting the working running state of each storage battery of the storage battery pack so as to carry out running maintenance on the storage battery pack;
the system comprises a base station, a node station, a bus station and a central machine room, wherein the base station is used for receiving and storing storage battery monitoring data sent by the base station, the node station, the bus station and the central machine room in a cloud data mode, and the data intelligent management platform is used for automatically making a discharge test of a storage battery pack according to the base station, the node station, the bus station and the central machine room which generate superior management indexes and release information in real time, and controlling and adjusting the working state of the storage battery pack so as to operate, maintain and manage the storage battery.
The system can set normal working values of the single battery in certain ranges such as voltage, internal resistance, temperature, voltage at the ends of the group, on-line voltage, charge and discharge current and the like, and automatically gives an alarm after exceeding corresponding alarm values, and simultaneously displays the specific type and value of the alarm and the alarm time.
The system may further comprise a processor configured to,
the display module is used for being connected with the main control module to receive the real-time monitoring data of the storage battery, and carrying out the real-time monitoring data throwing display of the storage battery through the connection display large screen so as to enable a worker to carry out remote supervision and check, and can directly check the monitoring data and the alarm information of the storage battery pack on site, and can also control charging and discharging through the display large screen, and the like, so that the monitoring and the operation are facilitated.
The database and the data intelligent management platform are arranged in the network management center and are used for carrying out remote monitoring and monitoring data storage on the storage battery pack in the base station, the node station, the confluence station and the central machine room, and the control unit is arranged in each base station, the node station, the confluence station and the central machine room and is used for carrying out operation and maintenance management and control on the storage battery pack.
Specifically, the monitoring unit adopts a distributed online monitoring scheme, namely, a single acquisition module is installed on each storage battery of the storage battery, the single acquisition module monitors running data of the storage battery including data such as voltage, internal resistance, positive/negative poles, charging and discharging currents and the like in real time, the monitoring data are transmitted to a collecting module through an RS485 line, the collecting module uploads collected information to a main control module, meanwhile, the collecting module supports an internal resistance test function, the collecting module uploads storage battery data collected in real time by each base station, node station, bus station and central machine room to a database and a data intelligent management platform in a cloud data mode for remote display supervision, and the data intelligent management platform automatically formulates a discharging test of the storage battery based on the uploaded data while storing the data, so that the control unit is controlled to regulate charging and discharging of the storage battery assembly, and targeted remote operation management regulation and control of each storage battery of the storage battery is realized.
In order to avoid damage caused by redundant electric quantity of the storage battery, referring to fig. 1-5, the following preferred technical scheme is provided:
the control unit comprises a control unit which is arranged to control the control unit,
the switching module is used for switching and adjusting circuit connection among the storage battery pack, the inversion module and the power supply, so that two working modes of current limiting charging and checkability discharging of the storage battery pack are adjusted, the discharging mode is a feed network type, constant current discharging is carried out, and discharging current can be set;
the inversion module is used for remotely and automatically controlling the storage battery pack when the storage battery pack is subjected to checkup discharge, inverting the electric quantity of each storage battery of the storage battery pack into alternating current and feeding the alternating current back to the power grid;
the current-limiting charging module is used for connecting the storage battery pack, and has a current-limiting effect on current when the storage battery pack is charged, so that the storage battery pack is charged in three stages of constant current, constant voltage and trickle;
the discharging module is an electric load and is used for being connected with the storage battery pack after being connected with the current-limiting charging module in parallel, electric quantity consumption is carried out when the storage battery pack is in a discharging mode, and the working voltage of the discharging module is 380V rated voltage and is controlled by a remote computer.
The control unit may further comprise a control unit,
and the power module is used for adjusting the running power of the storage battery pack, automatically adjusting the running power when the storage battery pack discharges, and adjusting the storage battery pack to the set discharge current to perform constant current discharge.
The switching module comprises a normally open contactor K2 connected with the positive electrode of the storage battery, the other end of the normally open contactor K2 is connected to a node between the inverting module and the current-limiting charging module, a normally closed contactor K11 is connected to a node between the normally open contactor K2 and the positive electrode of the storage battery, the other end of the normally closed contactor K11 is connected with a normally open contactor K1, the other end of the normally open contactor K1 is connected with the current-limiting charging module, a diode D1 is connected to a node between the normally open contactor K1 and the normally closed contactor K11, and the other end of the diode D1 is connected to a node between the normally open contactor K2 and the normally closed contactor K11; the switching module further comprises a normally open contactor K3 connected with the negative electrode of the storage battery, the other end of the normally open contactor K3 is connected to a node between the inverting module and the current-limiting charging module, a normally closed contactor K12 is connected to a node between the normally open contactor K3 and the negative electrode of the storage battery, the other end of the normally closed contactor K12 is connected with a normally open contactor K4, the other end of the normally open contactor K4 is connected with the current-limiting charging module, a diode D2 is connected to a node between the normally open contactor K4 and the normally closed contactor K12, and the other end of the diode D2 is connected to a node between the normally open contactor K3 and the normally closed contactor K12.
One end of the normally closed contactor K11 and one end of the normally closed contactor K12, which are far away from the anode and the cathode of the storage battery, are respectively connected with a binding post of a power supply, the power supply and a discharging module are arranged in parallel with an electric load, the system power supply is taken from the storage battery, the system is ensured to work without being affected by the influence of the commercial power, and the uninterrupted power supply of the user load can be ensured after the commercial power is cut off.
The inversion module is a feedback inverter and comprises a DC/DC converter and a DC/AC inverter, the DC/DC converter and the DC/AC inverter are jointly packaged in a shell, two connection ports of the DC/DC converter are respectively connected with positive and negative poles of the storage battery pack, and the DC/AC inverter is connected with L1, L2, L3 and N interfaces of a power grid.
The DC/DC converter converts direct current voltage within 285-700 VDC range into high voltage direct current in a constant current mode, input current, namely battery discharge current, is set within 0-35A range, the tolerance range of the discharge current is not more than 1A, the feedback type DC/AC inverter feeds back the high voltage direct current output by the DC/DC converter to a power grid, the maximum feedback power is 20KW, the DC/AC inverter is communicated with an upper computer through RS485, receives related information of working modes, on-off instructions and discharge current value setting, and reports related working states of the inverter. The feedback inverter has multiple protection functions such as overvoltage and overtemperature, adopts standard rack type design, and is convenient to install and maintain.
Specifically, when discharging, normally closed contactors K11 and K12 are opened, normally open contactors K2 and K3 are closed, the storage battery pack is separated from the system, the electric quantity of the storage battery pack is consumed by a discharging module, namely an electric load, constant-current discharging is carried out by automatically adjusting the discharging current to the set discharging current through the power module, the DC/AC inverter feeds high-voltage direct current output by the DC/DC converter back to the power grid, damage to the storage battery pack caused by excessive electric quantity in the storage battery pack is avoided, when a discharging stopping condition is met, the storage battery pack is automatically converted into steady-flow charging, normally open contactors K2 and K3 are opened, normally open contactors K1 and K4 are closed, a built-in steady-flow charging circuit module of the system starts to work, charging is finished when the charging current is smaller than the floating charging current, and the storage battery is directly recovered to be on line, and the storage battery is directly charged in a floating way by a rectifier; after the discharging is finished, the charging is automatically changed into the charging, the high-frequency DC/DC storage battery pack steady-current charging circuit module works, and the system automatically adjusts the charging current to a set value and stabilizes the current; when the storage battery is shifted to a floating charge state, normally-open contactors K1 and K4 are opened, normally-closed contactors K11 and K12 are closed, charging in three stages of constant current, constant voltage and trickle is achieved, the service life of the storage battery is prevented from being influenced by the fact that the pressure difference is overlarge and the storage battery is impacted by high current, and the storage battery is charged more in a saturated mode by the aid of three-stage charging.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A remote on-line operation and maintenance management system for a storage battery, comprising:
the monitoring unit is used for carrying out data monitoring on each storage battery of the storage battery pack in the base station, the node station, the bus station and the central machine room, and collecting the voltage, current and power data of the operation work of each storage battery in real time;
the monitoring unit comprises a control unit for controlling the control unit,
the single body acquisition module is used for being arranged on each storage battery of the storage battery pack, monitoring and acquiring voltage, internal resistance and positive/negative pole column temperature data of the storage battery in real time, and transmitting the monitoring data to the collecting module through an RS485 line;
the converging module is used for converging the voltage, current and power data of each storage battery during the operation, which are monitored and collected by each single collecting module, and uploading the collected storage battery information to the main control module;
the current detector is used for carrying out eddy current detection on the storage battery pack and determining the current in a storage battery pack circuit;
the main control module is used for controlling the system equipment to run autonomously, and sending and feeding back the storage battery monitoring data of the base station, the node station, the bus station and the central machine room to the intelligent maintenance terminal through a wired network so as to enable staff to check the storage battery monitoring data;
the control unit is used for being controlled by the main control module to execute instructions, controlling, switching and adjusting the working running state of each storage battery of the storage battery pack so as to carry out running maintenance on the storage battery pack;
the system comprises a base station, a node station, a bus station and a central machine room, wherein the base station is used for receiving and storing storage battery monitoring data sent by the base station, the node station, the bus station and the central machine room in a cloud data mode, and the data intelligent management platform is used for automatically making a discharge test of a storage battery pack according to the base station, the node station, the bus station and the central machine room which generate superior management indexes and release information in real time, and controlling and adjusting the working state of the storage battery pack so as to operate, maintain and manage the storage battery;
the database and the data intelligent management platform are arranged in the network management center and are used for carrying out remote monitoring and monitoring data storage on the storage battery pack in the base station, the node station, the confluence station and the central machine room, and the control unit is arranged in each base station, the node station, the confluence station and the central machine room and is used for carrying out operation and maintenance management regulation and control on the storage battery pack;
the control unit comprises a control unit which is arranged to control the control unit,
the switching module is used for switching and adjusting circuit connection between the storage battery pack, the inversion module and the power supply, so that two working modes of current limiting charging and checkable discharging of the storage battery pack are adjusted;
the inversion module is used for remotely and automatically controlling the storage battery pack when the storage battery pack is subjected to checkup discharge, inverting the electric quantity of each storage battery of the storage battery pack into alternating current and feeding the alternating current back to the power grid;
the current-limiting charging module is used for connecting the storage battery pack, and has a current-limiting effect on current when the storage battery pack is charged, so that the storage battery pack is charged in three stages of constant current, constant voltage and trickle;
the discharging module is an electricity load and is used for being connected with the storage battery pack after being connected with the current-limiting charging module in parallel, and the electricity consumption is carried out when the storage battery pack is in a discharging mode;
the switching module comprises a normally open contactor K2 connected with the positive electrode of the storage battery, the other end of the normally open contactor K2 is connected to a node between the inverting module and the current-limiting charging module, a normally closed contactor K11 is connected to a node between the normally open contactor K2 and the positive electrode of the storage battery, the other end of the normally closed contactor K11 is connected with a normally open contactor K1, the other end of the normally open contactor K1 is connected with the current-limiting charging module, a diode D1 is connected to a node between the normally open contactor K1 and the normally closed contactor K11, and the other end of the diode D1 is connected to a node between the normally open contactor K2 and the normally closed contactor K11; the switching module further comprises a normally open contactor K3 connected with the negative electrode of the storage battery, the other end of the normally open contactor K3 is connected to a node between the inverting module and the current-limiting charging module, a normally closed contactor K12 is connected to a node between the normally open contactor K3 and the negative electrode of the storage battery, the other end of the normally closed contactor K12 is connected with a normally open contactor K4, the other end of the normally open contactor K4 is connected with the current-limiting charging module, a diode D2 is connected to a node between the normally open contactor K4 and the normally closed contactor K12, and the other end of the diode D2 is connected to a node between the normally open contactor K3 and the normally closed contactor K12.
2. The remote on-line operation and maintenance management system for a storage battery according to claim 1, wherein: the system may further comprise a processor configured to,
the display module is used for being connected with the main control module to receive the real-time monitoring data of the storage battery, and carrying out the real-time monitoring data throwing display of the storage battery through being connected with the display large screen so as to enable a worker to carry out remote supervision and check, and the charging and discharging of the storage battery pack are directly controlled through the display large screen.
3. The remote on-line operation and maintenance management system for a storage battery according to claim 1, wherein: the control unit may further comprise a control unit,
and the power module is used for adjusting the running power of the storage battery pack, automatically adjusting the running power when the storage battery pack discharges, and adjusting the storage battery pack to the set discharge current to perform constant current discharge.
4. The remote on-line operation and maintenance management system for a storage battery according to claim 1, wherein: one ends of the normally-closed contactor K11 and the normally-closed contactor K12, which are far away from the anode and the cathode of the storage battery pack, are respectively connected with binding posts of a power supply, and the power supply and a discharging module, namely an electric load, are arranged in parallel.
5. The remote on-line operation and maintenance management system for a storage battery according to claim 1, wherein: the inversion module is a feedback inverter and comprises a DC/DC converter and a DC/AC inverter, the DC/DC converter and the DC/AC inverter are jointly packaged in a shell, two connection ports of the DC/DC converter are respectively connected with positive and negative poles of the storage battery pack, and the DC/AC inverter is connected with L1, L2, L3 and N interfaces of a power grid.
6. The remote on-line operation and maintenance management system for a storage battery according to claim 5, wherein: the DC/DC converter converts the direct current voltage into high-voltage direct current in a constant current mode, the feedback type DC/AC inverter feeds the high-voltage direct current output by the DC/DC converter back to a power grid, the maximum feedback power is 20KW, the DC/AC inverter is communicated with an upper computer through RS485 and receives relevant information of working modes, on-off instructions and discharge current value setting, and relevant working states of the inverter are reported.
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| CN103984316A (en) * | 2014-05-16 | 2014-08-13 | 刘玮 | Energy management device and system |
| CN105048011A (en) * | 2015-08-27 | 2015-11-11 | 张家港莫特普数据科技有限公司 | Cloud monitoring system and method for power batteries |
| KR20190121635A (en) * | 2018-04-18 | 2019-10-28 | 엘지전자 주식회사 | Energy management device, power box, and energy management system including the same |
| CN212659977U (en) * | 2020-07-06 | 2021-03-05 | 沈阳贝特瑞科技有限公司 | Online intelligent management system for base station storage battery |
| CN114167291A (en) * | 2021-12-06 | 2022-03-11 | 国网新疆电力有限公司克州供电公司 | Safe operation and maintenance management system for storage battery of power internet of things of communication station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11011913B2 (en) * | 2019-01-25 | 2021-05-18 | Flex Power Control, Inc. | Multifunction power management system |
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| CN103984316A (en) * | 2014-05-16 | 2014-08-13 | 刘玮 | Energy management device and system |
| CN105048011A (en) * | 2015-08-27 | 2015-11-11 | 张家港莫特普数据科技有限公司 | Cloud monitoring system and method for power batteries |
| KR20190121635A (en) * | 2018-04-18 | 2019-10-28 | 엘지전자 주식회사 | Energy management device, power box, and energy management system including the same |
| CN212659977U (en) * | 2020-07-06 | 2021-03-05 | 沈阳贝特瑞科技有限公司 | Online intelligent management system for base station storage battery |
| CN114167291A (en) * | 2021-12-06 | 2022-03-11 | 国网新疆电力有限公司克州供电公司 | Safe operation and maintenance management system for storage battery of power internet of things of communication station |
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